(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict'

module.exports = createCamera

var now         = require('right-now')
var createView  = require('3d-view')
var mouseChange = require('mouse-change')
var mouseWheel  = require('mouse-wheel')
var mouseOffset = require('mouse-event-offset')

function createCamera(element, options) {
  element = element || document.body
  options = options || {}

  var limits  = [ 0.01, Infinity ]
  if('distanceLimits' in options) {
    limits[0] = options.distanceLimits[0]
    limits[1] = options.distanceLimits[1]
  }
  if('zoomMin' in options) {
    limits[0] = options.zoomMin
  }
  if('zoomMax' in options) {
    limits[1] = options.zoomMax
  }

  var view = createView({
    center: options.center || [0,0,0],
    up:     options.up     || [0,1,0],
    eye:    options.eye    || [0,0,10],
    mode:   options.mode   || 'orbit',
    distanceLimits: limits
  })

  var pmatrix = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
  var distance = 0.0
  var width   = element.clientWidth
  var height  = element.clientHeight

  var camera = {
    view:               view,
    element:            element,
    delay:              options.delay          || 16,
    rotateSpeed:        options.rotateSpeed    || 1,
    zoomSpeed:          options.zoomSpeed      || 1,
    translateSpeed:     options.translateSpeed || 1,
    flipX:              !!options.flipX,
    flipY:              !!options.flipY,
    modes:              view.modes,
    tick: function() {
      var t = now()
      var delay = this.delay
      view.idle(t-delay)
      view.flush(t-(100+delay*2))
      var ctime = t - 2 * delay
      view.recalcMatrix(ctime)
      var allEqual = true
      var matrix = view.computedMatrix
      for(var i=0; i<16; ++i) {
        allEqual = allEqual && (pmatrix[i] === matrix[i])
        pmatrix[i] = matrix[i]
      }
      var sizeChanged =
          element.clientWidth === width &&
          element.clientHeight === height
      width  = element.clientWidth
      height = element.clientHeight
      if(allEqual) {
        return !sizeChanged
      }
      distance = Math.exp(view.computedRadius[0])
      return true
    },
    lookAt: function(center, eye, up) {
      view.lookAt(view.lastT(), center, eye, up)
    },
    rotate: function(pitch, yaw, roll) {
      view.rotate(view.lastT(), pitch, yaw, roll)
    },
    pan: function(dx, dy, dz) {
      view.pan(view.lastT(), dx, dy, dz)
    },
    translate: function(dx, dy, dz) {
      view.translate(view.lastT(), dx, dy, dz)
    }
  }

  Object.defineProperties(camera, {
    matrix: {
      get: function() {
        return view.computedMatrix
      },
      set: function(mat) {
        view.setMatrix(view.lastT(), mat)
        return view.computedMatrix
      },
      enumerable: true
    },
    mode: {
      get: function() {
        return view.getMode()
      },
      set: function(mode) {
        view.setMode(mode)
        return view.getMode()
      },
      enumerable: true
    },
    center: {
      get: function() {
        return view.computedCenter
      },
      set: function(ncenter) {
        view.lookAt(view.lastT(), ncenter)
        return view.computedCenter
      },
      enumerable: true
    },
    eye: {
      get: function() {
        return view.computedEye
      },
      set: function(neye) {
        view.lookAt(view.lastT(), null, neye)
        return view.computedEye
      },
      enumerable: true
    },
    up: {
      get: function() {
        return view.computedUp
      },
      set: function(nup) {
        view.lookAt(view.lastT(), null, null, nup)
        return view.computedUp
      },
      enumerable: true
    },
    distance: {
      get: function() {
        return distance
      },
      set: function(d) {
        view.setDistance(view.lastT(), d)
        return d
      },
      enumerable: true
    },
    distanceLimits: {
      get: function() {
        return view.getDistanceLimits(limits)
      },
      set: function(v) {
        view.setDistanceLimits(v)
        return v
      },
      enumerable: true
    }
  })

  element.addEventListener('contextmenu', function(ev) {
    ev.preventDefault()
    return false
  })

  var lastX = 0, lastY = 0, lastMods = {shift: false, control: false, alt: false, meta: false}
  mouseChange(element, handleInteraction)

  //enable simple touch interactions
  element.addEventListener('touchstart', function (ev) {
    var xy = mouseOffset(ev.changedTouches[0], element)
    handleInteraction(0, xy[0], xy[1], lastMods)
    handleInteraction(1, xy[0], xy[1], lastMods)
  })
  element.addEventListener('touchmove', function (ev) {
    var xy = mouseOffset(ev.changedTouches[0], element)
    handleInteraction(1, xy[0], xy[1], lastMods)
  })
  element.addEventListener('touchend', function (ev) {
    var xy = mouseOffset(ev.changedTouches[0], element)
    handleInteraction(0, lastX, lastY, lastMods)
  })

  function handleInteraction (buttons, x, y, mods) {
    var scale = 1.0 / element.clientHeight
    var dx    = scale * (x - lastX)
    var dy    = scale * (y - lastY)

    var flipX = camera.flipX ? 1 : -1
    var flipY = camera.flipY ? 1 : -1

    var drot  = Math.PI * camera.rotateSpeed

    var t = now()

    if(buttons & 1) {
      if(mods.shift) {
        view.rotate(t, 0, 0, -dx * drot)
      } else {
        view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0)
      }
    } else if(buttons & 2) {
      view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0)
    } else if(buttons & 4) {
      var kzoom = camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 50.0
      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
    }

    lastX = x
    lastY = y
    lastMods = mods
  }

  mouseWheel(element, function(dx, dy, dz) {
    var flipX = camera.flipX ? 1 : -1
    var flipY = camera.flipY ? 1 : -1
    var t = now()
    if(Math.abs(dx) > Math.abs(dy)) {
      view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth)
    } else {
      var kzoom = camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0
      view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1))
    }
  }, true)

  return camera
}

},{"3d-view":2,"mouse-change":428,"mouse-event-offset":429,"mouse-wheel":431,"right-now":948}],2:[function(require,module,exports){
'use strict'

module.exports = createViewController

var createTurntable = require('turntable-camera-controller')
var createOrbit     = require('orbit-camera-controller')
var createMatrix    = require('matrix-camera-controller')

function ViewController(controllers, mode) {
  this._controllerNames = Object.keys(controllers)
  this._controllerList = this._controllerNames.map(function(n) {
    return controllers[n]
  })
  this._mode   = mode
  this._active = controllers[mode]
  if(!this._active) {
    this._mode   = 'turntable'
    this._active = controllers.turntable
  }
  this.modes = this._controllerNames
  this.computedMatrix = this._active.computedMatrix
  this.computedEye    = this._active.computedEye
  this.computedUp     = this._active.computedUp
  this.computedCenter = this._active.computedCenter
  this.computedRadius = this._active.computedRadius
}

var proto = ViewController.prototype

var COMMON_METHODS = [
  ['flush', 1],
  ['idle', 1],
  ['lookAt', 4],
  ['rotate', 4],
  ['pan', 4],
  ['translate', 4],
  ['setMatrix', 2],
  ['setDistanceLimits', 2],
  ['setDistance', 2]
]

COMMON_METHODS.forEach(function(method) {
  var name = method[0]
  var argNames = []
  for(var i=0; i<method[1]; ++i) {
    argNames.push('a'+i)
  }
  var code = 'var cc=this._controllerList;for(var i=0;i<cc.length;++i){cc[i].'+method[0]+'('+argNames.join()+')}'
  proto[name] = Function.apply(null, argNames.concat(code))
})

proto.recalcMatrix = function(t) {
  this._active.recalcMatrix(t)
}

proto.getDistance = function(t) {
  return this._active.getDistance(t)
}
proto.getDistanceLimits = function(out) {
  return this._active.getDistanceLimits(out)
}

proto.lastT = function() {
  return this._active.lastT()
}

proto.setMode = function(mode) {
  if(mode === this._mode) {
    return
  }
  var idx = this._controllerNames.indexOf(mode)
  if(idx < 0) {
    return
  }
  var prev  = this._active
  var next  = this._controllerList[idx]
  var lastT = Math.max(prev.lastT(), next.lastT())

  prev.recalcMatrix(lastT)
  next.setMatrix(lastT, prev.computedMatrix)
  
  this._active = next
  this._mode   = mode

  //Update matrix properties
  this.computedMatrix = this._active.computedMatrix
  this.computedEye    = this._active.computedEye
  this.computedUp     = this._active.computedUp
  this.computedCenter = this._active.computedCenter
  this.computedRadius = this._active.computedRadius
}

proto.getMode = function() {
  return this._mode
}

function createViewController(options) {
  options = options || {}

  var eye       = options.eye    || [0,0,1]
  var center    = options.center || [0,0,0]
  var up        = options.up     || [0,1,0]
  var limits    = options.distanceLimits || [0, Infinity]
  var mode      = options.mode   || 'turntable'

  var turntable = createTurntable()
  var orbit     = createOrbit()
  var matrix    = createMatrix()

  turntable.setDistanceLimits(limits[0], limits[1])
  turntable.lookAt(0, eye, center, up)
  orbit.setDistanceLimits(limits[0], limits[1])
  orbit.lookAt(0, eye, center, up)
  matrix.setDistanceLimits(limits[0], limits[1])
  matrix.lookAt(0, eye, center, up)

  return new ViewController({
    turntable: turntable,
    orbit: orbit,
    matrix: matrix
  }, mode)
}
},{"matrix-camera-controller":426,"orbit-camera-controller":449,"turntable-camera-controller":989}],3:[function(require,module,exports){
'use strict'

var weakMap      = typeof WeakMap === 'undefined' ? require('weak-map') : WeakMap
var createBuffer = require('gl-buffer')
var createVAO    = require('gl-vao')

var TriangleCache = new weakMap()

function createABigTriangle(gl) {

  var triangleVAO = TriangleCache.get(gl)
  var handle = triangleVAO && (triangleVAO._triangleBuffer.handle || triangleVAO._triangleBuffer.buffer)
  if(!handle || !gl.isBuffer(handle)) {
    var buf = createBuffer(gl, new Float32Array([-1, -1, -1, 4, 4, -1]))
    triangleVAO = createVAO(gl, [
      { buffer: buf,
        type: gl.FLOAT,
        size: 2
      }
    ])
    triangleVAO._triangleBuffer = buf
    TriangleCache.set(gl, triangleVAO)
  }
  triangleVAO.bind()
  gl.drawArrays(gl.TRIANGLES, 0, 3)
  triangleVAO.unbind()
}

module.exports = createABigTriangle

},{"gl-buffer":132,"gl-vao":243,"weak-map":1011}],4:[function(require,module,exports){
var padLeft = require('pad-left')

module.exports = addLineNumbers
function addLineNumbers (string, start, delim) {
  start = typeof start === 'number' ? start : 1
  delim = delim || ': '

  var lines = string.split(/\r?\n/)
  var totalDigits = String(lines.length + start - 1).length
  return lines.map(function (line, i) {
    var c = i + start
    var digits = String(c).length
    var prefix = padLeft(c, totalDigits - digits)
    return prefix + delim + line
  }).join('\n')
}

},{"pad-left":450}],5:[function(require,module,exports){
'use strict'

module.exports = affineHull

var orient = require('robust-orientation')

function linearlyIndependent(points, d) {
  var nhull = new Array(d+1)
  for(var i=0; i<points.length; ++i) {
    nhull[i] = points[i]
  }
  for(var i=0; i<=points.length; ++i) {
    for(var j=points.length; j<=d; ++j) {
      var x = new Array(d)
      for(var k=0; k<d; ++k) {
        x[k] = Math.pow(j+1-i, k)
      }
      nhull[j] = x
    }
    var o = orient.apply(void 0, nhull)
    if(o) {
      return true
    }
  }
  return false
}

function affineHull(points) {
  var n = points.length
  if(n === 0) {
    return []
  }
  if(n === 1) {
    return [0]
  }
  var d = points[0].length
  var frame = [ points[0] ]
  var index = [ 0 ]
  for(var i=1; i<n; ++i) {
    frame.push(points[i])
    if(!linearlyIndependent(frame, d)) {
      frame.pop()
      continue
    }
    index.push(i)
    if(index.length === d+1) {
      return index
    }
  }
  return index
}
},{"robust-orientation":954}],6:[function(require,module,exports){
'use strict'

module.exports = alphaComplex

var delaunay = require('delaunay-triangulate')
var circumradius = require('circumradius')

function alphaComplex(alpha, points) {
  return delaunay(points).filter(function(cell) {
    var simplex = new Array(cell.length)
    for(var i=0; i<cell.length; ++i) {
      simplex[i] = points[cell[i]]
    }
    return circumradius(simplex) * alpha < 1
  })
}
},{"circumradius":57,"delaunay-triangulate":88}],7:[function(require,module,exports){
module.exports = alphaShape

var ac = require('alpha-complex')
var bnd = require('simplicial-complex-boundary')

function alphaShape(alpha, points) {
  return bnd(ac(alpha, points))
}
},{"alpha-complex":6,"simplicial-complex-boundary":966}],8:[function(require,module,exports){
'use strict';

var arraytools  = function () {

  var that = {};

  var RGB_REGEX =  /^rgba?\(\s*\d{1,3}\s*,\s*\d{1,3}\s*,\s*\d{1,3}\s*(,.*)?\)$/;
  var RGB_GROUP_REGEX = /^rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,?\s*(.*)?\)$/;

  function isPlainObject (v) {
    return !Array.isArray(v) && v !== null && typeof v === 'object';
  }

  function linspace (start, end, num) {
    var inc = (end - start) / Math.max(num - 1, 1);
    var a = [];
    for( var ii = 0; ii < num; ii++)
      a.push(start + ii*inc);
    return a;
  }

  function zip () {
      var arrays = [].slice.call(arguments);
      var lengths = arrays.map(function (a) {return a.length;});
      var len = Math.min.apply(null, lengths);
      var zipped = [];
      for (var i = 0; i < len; i++) {
          zipped[i] = [];
          for (var j = 0; j < arrays.length; ++j) {
              zipped[i][j] = arrays[j][i];
          }
      }
      return zipped;
  }

  function zip3 (a, b, c) {
      var len = Math.min.apply(null, [a.length, b.length, c.length]);
      var result = [];
      for (var n = 0; n < len; n++) {
          result.push([a[n], b[n], c[n]]);
      }
      return result;
  }

  function sum (A) {
    var acc = 0;
    accumulate(A, acc);
    function accumulate(x) {
      for (var i = 0; i < x.length; i++) {
        if (Array.isArray(x[i]))
          accumulate(x[i], acc);
        else
          acc += x[i];
      }
    }
    return acc;
  }

  function copy2D (arr) {
    var carr = [];
    for (var i = 0; i < arr.length; ++i) {
      carr[i] = [];
      for (var j = 0; j < arr[i].length; ++j) {
        carr[i][j] = arr[i][j];
      }
    }

    return carr;
  }


  function copy1D (arr) {
    var carr = [];
    for (var i = 0; i < arr.length; ++i) {
      carr[i] = arr[i];
    }

    return carr;
  }


  function isEqual(arr1, arr2) {
    if(arr1.length !== arr2.length)
      return false;
    for(var i = arr1.length; i--;) {
      if(arr1[i] !== arr2[i])
        return false;
    }

    return true;
  }


  function str2RgbArray(str, twoFiftySix) {
    // convert hex or rbg strings to 0->1 or 0->255 rgb array
    var rgb,
        match;

    if (typeof str !== 'string') return str;

    rgb = [];
    // hex notation
    if (str[0] === '#') {
      str = str.substr(1) // remove hash
      if (str.length === 3) str += str // fff -> ffffff
      match = parseInt(str, 16);
      rgb[0] = ((match >> 16) & 255);
      rgb[1] = ((match >> 8) & 255);
      rgb[2] = (match & 255);
    }

    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
    else if (RGB_REGEX.test(str)) {
      match = str.match(RGB_GROUP_REGEX);
      rgb[0] = parseInt(match[1]);
      rgb[1] = parseInt(match[2]);
      rgb[2] = parseInt(match[3]);
    }

    if (!twoFiftySix) {
      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
    }


    return rgb;
  }


  function str2RgbaArray(str, twoFiftySix) {
    // convert hex or rbg strings to 0->1 or 0->255 rgb array
    var rgb,
        match;

    if (typeof str !== 'string') return str;

    rgb = [];
    // hex notation
    if (str[0] === '#') {
      str = str.substr(1) // remove hash
      if (str.length === 3) str += str // fff -> ffffff
      match = parseInt(str, 16);
      rgb[0] = ((match >> 16) & 255);
      rgb[1] = ((match >> 8) & 255);
      rgb[2] = (match & 255);
    }

    // rgb(34, 34, 127) or rgba(34, 34, 127, 0.1) notation
    else if (RGB_REGEX.test(str)) {
      match = str.match(RGB_GROUP_REGEX);
      rgb[0] = parseInt(match[1]);
      rgb[1] = parseInt(match[2]);
      rgb[2] = parseInt(match[3]);
      if (match[4]) rgb[3] = parseFloat(match[4]);
      else rgb[3] = 1.0;
    }



    if (!twoFiftySix) {
      for (var j=0; j<3; ++j) rgb[j] = rgb[j]/255
    }


    return rgb;
  }





  that.isPlainObject = isPlainObject;
  that.linspace = linspace;
  that.zip3 = zip3;
  that.sum = sum;
  that.zip = zip;
  that.isEqual = isEqual;
  that.copy2D = copy2D;
  that.copy1D = copy1D;
  that.str2RgbArray = str2RgbArray;
  that.str2RgbaArray = str2RgbaArray;

  return that

}


module.exports = arraytools();

},{}],9:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');

var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;

  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  }
  else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = stackStartFunction.name;
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && !isFinite(value)) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b)) {
    return a === b;
  }
  var aIsArgs = isArguments(a),
      bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  var ka = objectKeys(a),
      kb = objectKeys(b),
      key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

},{"util/":1001}],10:[function(require,module,exports){
module.exports = function _atob(str) {
  return atob(str)
}

},{}],11:[function(require,module,exports){
'use strict'

module.exports = barycentric

var solve = require('robust-linear-solve')

function reduce(x) {
  var r = 0
  for(var i=0; i<x.length; ++i) {
    r += x[i]
  }
  return r
}

function barycentric(simplex, point) {
  var d = point.length
  var A = new Array(d+1)
  for(var i=0; i<d; ++i) {
    var row = new Array(d+1)
    for(var j=0; j<=d; ++j) {
      row[j] = simplex[j][i]
    }
    A[i] = row
  }
  A[d] = new Array(d+1)
  for(var i=0; i<=d; ++i) {
    A[d][i] = 1
  }

  var b = new Array(d+1)
  for(var i=0; i<d; ++i) {
    b[i] = point[i]
  }
  b[d] = 1.0

  var x = solve(A, b)
  var w = reduce(x[d+1])
  
  if(w === 0) {
    w = 1.0
  }
  var y = new Array(d+1)
  for(var i=0; i<=d; ++i) {
    y[i] = reduce(x[i]) / w
  }
  return y
}
},{"robust-linear-solve":953}],12:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function placeHoldersCount (b64) {
  var len = b64.length
  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // the number of equal signs (place holders)
  // if there are two placeholders, than the two characters before it
  // represent one byte
  // if there is only one, then the three characters before it represent 2 bytes
  // this is just a cheap hack to not do indexOf twice
  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
}

function byteLength (b64) {
  // base64 is 4/3 + up to two characters of the original data
  return b64.length * 3 / 4 - placeHoldersCount(b64)
}

function toByteArray (b64) {
  var i, j, l, tmp, placeHolders, arr
  var len = b64.length
  placeHolders = placeHoldersCount(b64)

  arr = new Arr(len * 3 / 4 - placeHolders)

  // if there are placeholders, only get up to the last complete 4 chars
  l = placeHolders > 0 ? len - 4 : len

  var L = 0

  for (i = 0, j = 0; i < l; i += 4, j += 3) {
    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
    arr[L++] = (tmp >> 16) & 0xFF
    arr[L++] = (tmp >> 8) & 0xFF
    arr[L++] = tmp & 0xFF
  }

  if (placeHolders === 2) {
    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[L++] = tmp & 0xFF
  } else if (placeHolders === 1) {
    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[L++] = (tmp >> 8) & 0xFF
    arr[L++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var output = ''
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    output += lookup[tmp >> 2]
    output += lookup[(tmp << 4) & 0x3F]
    output += '=='
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
    output += lookup[tmp >> 10]
    output += lookup[(tmp >> 4) & 0x3F]
    output += lookup[(tmp << 2) & 0x3F]
    output += '='
  }

  parts.push(output)

  return parts.join('')
}

},{}],13:[function(require,module,exports){
var Base64Encode = require('./lib/encode');
var Base64Decode = require('./lib/decode');

module.exports = {
	Encode : Base64Encode,
	encode : Base64Encode,
	Decode : Base64Decode,
	decode : Base64Decode
};

},{"./lib/decode":14,"./lib/encode":15}],14:[function(require,module,exports){
(function (Buffer){
module.exports = Base64Decode;

var Transform = require('stream').Transform || require('readable-stream').Transform;
require('util').inherits(Base64Decode, Transform);

/**
 * Decodes a Base64 data stream, coming in as a string or Buffer of UTF-8 text, into binary Buffers.
 * @returns {Base64Decode}
 * @constructor
 */
function Base64Decode() {
	if ( !(this instanceof Base64Decode) )
		return new Base64Decode();

	Transform.call(this, {
		// The input is converted to strings, so no need to transform input strings to buffers
		decodeStrings : false
	});

	// Any extra chars from the last chunk
	this.extra = '';
}

/**
 * Decodes a Base64 data stream, coming in as a string or Buffer of UTF-8 text, into binary Buffers.
 * @param {Buffer|string} chunk
 * @param encoding
 * @param cb
 * @private
 */
Base64Decode.prototype._transform = function (chunk, encoding, cb) {
	// Convert chunk to a string
	chunk = '' + chunk;

	// Add previous extra and remove any newline characters
	chunk = this.extra + chunk.replace(/(\r\n|\n|\r)/gm, '');

	// 4 characters represent 3 bytes, so we can only decode in groups of 4 chars
	var remaining = chunk.length % 4;

	// Store the extra chars for later
	this.extra = chunk.slice(chunk.length - remaining);
	chunk = chunk.slice(0, chunk.length - remaining);

	// Create the new buffer and push
	var buf = new Buffer(chunk, 'base64');
	this.push(buf);
	cb();
};

/**
 * Emits 1, 2, or 3 extra characters of base64 data.
 * @param cb
 * @private
 */
Base64Decode.prototype._flush = function (cb) {
	if ( this.extra.length )
		this.push(new Buffer(this.extra, 'base64'));

	cb();
};

}).call(this,require("buffer").Buffer)
},{"buffer":46,"readable-stream":942,"stream":978,"util":1001}],15:[function(require,module,exports){
(function (Buffer){
module.exports = Base64Encode;

var Transform = require('stream').Transform || require('readable-stream').Transform;
require('util').inherits(Base64Encode, Transform);

/**
 * Transforms a Buffer stream of binary data to a stream of Base64 text. Note that this will
 * also work on a stream of pure strings, as the Writeable base class will automatically decode
 * text string chunks into Buffers.
 * @returns {Base64Encode}
 * @constructor
 */
function Base64Encode(lineLength) {
	if ( !(this instanceof Base64Encode) )
		return new Base64Encode(lineLength);

	Transform.call(this);

	// Any extra chars from the last chunk
	this.extra = null;

	this.lineLength = lineLength;

	this.currLineLength = 0;
}

/**
 * Adds \r\n as needed to the data chunk to ensure that the output Base64 string meets
 * the maximum line length requirement.
 * @param {string} chunk
 * @returns {string}
 * @private
 */
Base64Encode.prototype._fixLineLength = function (chunk) {
	// If we care about line length, add line breaks
	if ( !this.lineLength )
		return chunk;

	var size = chunk.length;
	var needed = this.lineLength - this.currLineLength;
	var start, end;

	var _chunk = '';
	for ( start = 0, end = needed; end < size; start = end, end += this.lineLength ) {
		_chunk += chunk.slice(start, end);
		_chunk += '\r\n';
	}

	var left = chunk.slice(start);
	this.currLineLength = left.length;

	_chunk += left;

	return _chunk;
};

/**
 * Transforms a Buffer chunk of data to a Base64 string chunk.
 * @param {Buffer} chunk
 * @param {string} encoding - unused since chunk is always a Buffer
 * @param cb
 * @private
 */
Base64Encode.prototype._transform = function (chunk, encoding, cb) {
	// Add any previous extra bytes to the chunk
	if ( this.extra ) {
		chunk = Buffer.concat([this.extra, chunk]);
		this.extra = null;
	}

	// 3 bytes are represented by 4 characters, so we can only encode in groups of 3 bytes
	var remaining = chunk.length % 3;

	if ( remaining !== 0 ) {
		// Store the extra bytes for later
		this.extra = chunk.slice(chunk.length - remaining);
		chunk = chunk.slice(0, chunk.length - remaining);
	}

	// Convert chunk to a base 64 string
	chunk = chunk.toString('base64');

	// Push the chunk
	this.push(this._fixLineLength(chunk));
	cb();
};

/**
 * Emits 0 or 4 extra characters of Base64 data.
 * @param cb
 * @private
 */
Base64Encode.prototype._flush = function (cb) {
	if ( this.extra )
		this.push(this._fixLineLength(this.extra.toString('base64')));

	cb();
};

}).call(this,require("buffer").Buffer)
},{"buffer":46,"readable-stream":942,"stream":978,"util":1001}],16:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = add

function add(a, b) {
  return rationalize(
    a[0].mul(b[1]).add(b[0].mul(a[1])),
    a[1].mul(b[1]))
}

},{"./lib/rationalize":26}],17:[function(require,module,exports){
'use strict'

module.exports = cmp

function cmp(a, b) {
    return a[0].mul(b[1]).cmp(b[0].mul(a[1]))
}

},{}],18:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = div

function div(a, b) {
  return rationalize(a[0].mul(b[1]), a[1].mul(b[0]))
}

},{"./lib/rationalize":26}],19:[function(require,module,exports){
'use strict'

var isRat = require('./is-rat')
var isBN = require('./lib/is-bn')
var num2bn = require('./lib/num-to-bn')
var str2bn = require('./lib/str-to-bn')
var rationalize = require('./lib/rationalize')
var div = require('./div')

module.exports = makeRational

function makeRational(numer, denom) {
  if(isRat(numer)) {
    if(denom) {
      return div(numer, makeRational(denom))
    }
    return [numer[0].clone(), numer[1].clone()]
  }
  var shift = 0
  var a, b
  if(isBN(numer)) {
    a = numer.clone()
  } else if(typeof numer === 'string') {
    a = str2bn(numer)
  } else if(numer === 0) {
    return [num2bn(0), num2bn(1)]
  } else if(numer === Math.floor(numer)) {
    a = num2bn(numer)
  } else {
    while(numer !== Math.floor(numer)) {
      numer = numer * Math.pow(2, 256)
      shift -= 256
    }
    a = num2bn(numer)
  }
  if(isRat(denom)) {
    a.mul(denom[1])
    b = denom[0].clone()
  } else if(isBN(denom)) {
    b = denom.clone()
  } else if(typeof denom === 'string') {
    b = str2bn(denom)
  } else if(!denom) {
    b = num2bn(1)
  } else if(denom === Math.floor(denom)) {
    b = num2bn(denom)
  } else {
    while(denom !== Math.floor(denom)) {
      denom = denom * Math.pow(2, 256)
      shift += 256
    }
    b = num2bn(denom)
  }
  if(shift > 0) {
    a = a.ushln(shift)
  } else if(shift < 0) {
    b = b.ushln(-shift)
  }
  return rationalize(a, b)
}

},{"./div":18,"./is-rat":20,"./lib/is-bn":24,"./lib/num-to-bn":25,"./lib/rationalize":26,"./lib/str-to-bn":27}],20:[function(require,module,exports){
'use strict'

var isBN = require('./lib/is-bn')

module.exports = isRat

function isRat(x) {
  return Array.isArray(x) && x.length === 2 && isBN(x[0]) && isBN(x[1])
}

},{"./lib/is-bn":24}],21:[function(require,module,exports){
'use strict'

var BN = require('bn.js')

module.exports = sign

function sign (x) {
  return x.cmp(new BN(0))
}

},{"bn.js":34}],22:[function(require,module,exports){
'use strict'

const sign = require('./bn-sign')

module.exports = bn2num

//TODO: Make this better
function bn2num(b) {
  var l = b.length
  var words = b.words
  var out = 0
  if (l === 1) {
    out = words[0]
  } else if (l === 2) {
    out = words[0] + (words[1] * 0x4000000)
  } else {
    for (var i = 0; i < l; i++) {
      var w = words[i]
      out += w * Math.pow(0x4000000, i)
    }
  }
  return sign(b) * out
}

},{"./bn-sign":21}],23:[function(require,module,exports){
'use strict'

var db = require('double-bits')
var ctz = require('bit-twiddle').countTrailingZeros

module.exports = ctzNumber

//Counts the number of trailing zeros
function ctzNumber(x) {
  var l = ctz(db.lo(x))
  if(l < 32) {
    return l
  }
  var h = ctz(db.hi(x))
  if(h > 20) {
    return 52
  }
  return h + 32
}

},{"bit-twiddle":33,"double-bits":89}],24:[function(require,module,exports){
'use strict'

var BN = require('bn.js')

module.exports = isBN

//Test if x is a bignumber
//FIXME: obviously this is the wrong way to do it
function isBN(x) {
  return x && typeof x === 'object' && Boolean(x.words)
}

},{"bn.js":34}],25:[function(require,module,exports){
'use strict'

var BN = require('bn.js')
var db = require('double-bits')

module.exports = num2bn

function num2bn(x) {
  var e = db.exponent(x)
  if(e < 52) {
    return new BN(x)
  } else {
    return (new BN(x * Math.pow(2, 52-e))).ushln(e-52)
  }
}

},{"bn.js":34,"double-bits":89}],26:[function(require,module,exports){
'use strict'

var num2bn = require('./num-to-bn')
var sign = require('./bn-sign')

module.exports = rationalize

function rationalize(numer, denom) {
  var snumer = sign(numer)
  var sdenom = sign(denom)
  if(snumer === 0) {
    return [num2bn(0), num2bn(1)]
  }
  if(sdenom === 0) {
    return [num2bn(0), num2bn(0)]
  }
  if(sdenom < 0) {
    numer = numer.neg()
    denom = denom.neg()
  }
  var d = numer.gcd(denom)
  if(d.cmpn(1)) {
    return [ numer.div(d), denom.div(d) ]
  }
  return [ numer, denom ]
}

},{"./bn-sign":21,"./num-to-bn":25}],27:[function(require,module,exports){
'use strict'

var BN = require('bn.js')

module.exports = str2BN

function str2BN(x) {
  return new BN(x)
}

},{"bn.js":34}],28:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = mul

function mul(a, b) {
  return rationalize(a[0].mul(b[0]), a[1].mul(b[1]))
}

},{"./lib/rationalize":26}],29:[function(require,module,exports){
'use strict'

var bnsign = require('./lib/bn-sign')

module.exports = sign

function sign(x) {
  return bnsign(x[0]) * bnsign(x[1])
}

},{"./lib/bn-sign":21}],30:[function(require,module,exports){
'use strict'

var rationalize = require('./lib/rationalize')

module.exports = sub

function sub(a, b) {
  return rationalize(a[0].mul(b[1]).sub(a[1].mul(b[0])), a[1].mul(b[1]))
}

},{"./lib/rationalize":26}],31:[function(require,module,exports){
'use strict'

var bn2num = require('./lib/bn-to-num')
var ctz = require('./lib/ctz')

module.exports = roundRat

// Round a rational to the closest float
function roundRat (f) {
  var a = f[0]
  var b = f[1]
  if (a.cmpn(0) === 0) {
    return 0
  }
  var h = a.abs().divmod(b.abs())
  var iv = h.div
  var x = bn2num(iv)
  var ir = h.mod
  var sgn = (a.negative !== b.negative) ? -1 : 1
  if (ir.cmpn(0) === 0) {
    return sgn * x
  }
  if (x) {
    var s = ctz(x) + 4
    var y = bn2num(ir.ushln(s).divRound(b))
    return sgn * (x + y * Math.pow(2, -s))
  } else {
    var ybits = b.bitLength() - ir.bitLength() + 53
    var y = bn2num(ir.ushln(ybits).divRound(b))
    if (ybits < 1023) {
      return sgn * y * Math.pow(2, -ybits)
    }
    y *= Math.pow(2, -1023)
    return sgn * y * Math.pow(2, 1023 - ybits)
  }
}

},{"./lib/bn-to-num":22,"./lib/ctz":23}],32:[function(require,module,exports){
"use strict"

function compileSearch(funcName, predicate, reversed, extraArgs, useNdarray, earlyOut) {
  var code = [
    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
";while(l<=h){\
var m=(l+h)>>>1,x=a", useNdarray ? ".get(m)" : "[m]"]
  if(earlyOut) {
    if(predicate.indexOf("c") < 0) {
      code.push(";if(x===y){return m}else if(x<=y){")
    } else {
      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
    }
  } else {
    code.push(";if(", predicate, "){i=m;")
  }
  if(reversed) {
    code.push("l=m+1}else{h=m-1}")
  } else {
    code.push("h=m-1}else{l=m+1}")
  }
  code.push("}")
  if(earlyOut) {
    code.push("return -1};")
  } else {
    code.push("return i};")
  }
  return code.join("")
}

function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
  var result = new Function([
  compileSearch("A", "x" + predicate + "y", reversed, ["y"], false, earlyOut),
  compileSearch("B", "x" + predicate + "y", reversed, ["y"], true, earlyOut),
  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], false, earlyOut),
  compileSearch("Q", "c(x,y)" + predicate + "0", reversed, ["y", "c"], true, earlyOut),
"function dispatchBsearch", suffix, "(a,y,c,l,h){\
if(a.shape){\
if(typeof(c)==='function'){\
return Q(a,(l===undefined)?0:l|0,(h===undefined)?a.shape[0]-1:h|0,y,c)\
}else{\
return B(a,(c===undefined)?0:c|0,(l===undefined)?a.shape[0]-1:l|0,y)\
}}else{\
if(typeof(c)==='function'){\
return P(a,(l===undefined)?0:l|0,(h===undefined)?a.length-1:h|0,y,c)\
}else{\
return A(a,(c===undefined)?0:c|0,(l===undefined)?a.length-1:l|0,y)\
}}}\
return dispatchBsearch", suffix].join(""))
  return result()
}

module.exports = {
  ge: compileBoundsSearch(">=", false, "GE"),
  gt: compileBoundsSearch(">", false, "GT"),
  lt: compileBoundsSearch("<", true, "LT"),
  le: compileBoundsSearch("<=", true, "LE"),
  eq: compileBoundsSearch("-", true, "EQ", true)
}

},{}],33:[function(require,module,exports){
/**
 * Bit twiddling hacks for JavaScript.
 *
 * Author: Mikola Lysenko
 *
 * Ported from Stanford bit twiddling hack library:
 *    http://graphics.stanford.edu/~seander/bithacks.html
 */

"use strict"; "use restrict";

//Number of bits in an integer
var INT_BITS = 32;

//Constants
exports.INT_BITS  = INT_BITS;
exports.INT_MAX   =  0x7fffffff;
exports.INT_MIN   = -1<<(INT_BITS-1);

//Returns -1, 0, +1 depending on sign of x
exports.sign = function(v) {
  return (v > 0) - (v < 0);
}

//Computes absolute value of integer
exports.abs = function(v) {
  var mask = v >> (INT_BITS-1);
  return (v ^ mask) - mask;
}

//Computes minimum of integers x and y
exports.min = function(x, y) {
  return y ^ ((x ^ y) & -(x < y));
}

//Computes maximum of integers x and y
exports.max = function(x, y) {
  return x ^ ((x ^ y) & -(x < y));
}

//Checks if a number is a power of two
exports.isPow2 = function(v) {
  return !(v & (v-1)) && (!!v);
}

//Computes log base 2 of v
exports.log2 = function(v) {
  var r, shift;
  r =     (v > 0xFFFF) << 4; v >>>= r;
  shift = (v > 0xFF  ) << 3; v >>>= shift; r |= shift;
  shift = (v > 0xF   ) << 2; v >>>= shift; r |= shift;
  shift = (v > 0x3   ) << 1; v >>>= shift; r |= shift;
  return r | (v >> 1);
}

//Computes log base 10 of v
exports.log10 = function(v) {
  return  (v >= 1000000000) ? 9 : (v >= 100000000) ? 8 : (v >= 10000000) ? 7 :
          (v >= 1000000) ? 6 : (v >= 100000) ? 5 : (v >= 10000) ? 4 :
          (v >= 1000) ? 3 : (v >= 100) ? 2 : (v >= 10) ? 1 : 0;
}

//Counts number of bits
exports.popCount = function(v) {
  v = v - ((v >>> 1) & 0x55555555);
  v = (v & 0x33333333) + ((v >>> 2) & 0x33333333);
  return ((v + (v >>> 4) & 0xF0F0F0F) * 0x1010101) >>> 24;
}

//Counts number of trailing zeros
function countTrailingZeros(v) {
  var c = 32;
  v &= -v;
  if (v) c--;
  if (v & 0x0000FFFF) c -= 16;
  if (v & 0x00FF00FF) c -= 8;
  if (v & 0x0F0F0F0F) c -= 4;
  if (v & 0x33333333) c -= 2;
  if (v & 0x55555555) c -= 1;
  return c;
}
exports.countTrailingZeros = countTrailingZeros;

//Rounds to next power of 2
exports.nextPow2 = function(v) {
  v += v === 0;
  --v;
  v |= v >>> 1;
  v |= v >>> 2;
  v |= v >>> 4;
  v |= v >>> 8;
  v |= v >>> 16;
  return v + 1;
}

//Rounds down to previous power of 2
exports.prevPow2 = function(v) {
  v |= v >>> 1;
  v |= v >>> 2;
  v |= v >>> 4;
  v |= v >>> 8;
  v |= v >>> 16;
  return v - (v>>>1);
}

//Computes parity of word
exports.parity = function(v) {
  v ^= v >>> 16;
  v ^= v >>> 8;
  v ^= v >>> 4;
  v &= 0xf;
  return (0x6996 >>> v) & 1;
}

var REVERSE_TABLE = new Array(256);

(function(tab) {
  for(var i=0; i<256; ++i) {
    var v = i, r = i, s = 7;
    for (v >>>= 1; v; v >>>= 1) {
      r <<= 1;
      r |= v & 1;
      --s;
    }
    tab[i] = (r << s) & 0xff;
  }
})(REVERSE_TABLE);

//Reverse bits in a 32 bit word
exports.reverse = function(v) {
  return  (REVERSE_TABLE[ v         & 0xff] << 24) |
          (REVERSE_TABLE[(v >>> 8)  & 0xff] << 16) |
          (REVERSE_TABLE[(v >>> 16) & 0xff] << 8)  |
           REVERSE_TABLE[(v >>> 24) & 0xff];
}

//Interleave bits of 2 coordinates with 16 bits.  Useful for fast quadtree codes
exports.interleave2 = function(x, y) {
  x &= 0xFFFF;
  x = (x | (x << 8)) & 0x00FF00FF;
  x = (x | (x << 4)) & 0x0F0F0F0F;
  x = (x | (x << 2)) & 0x33333333;
  x = (x | (x << 1)) & 0x55555555;

  y &= 0xFFFF;
  y = (y | (y << 8)) & 0x00FF00FF;
  y = (y | (y << 4)) & 0x0F0F0F0F;
  y = (y | (y << 2)) & 0x33333333;
  y = (y | (y << 1)) & 0x55555555;

  return x | (y << 1);
}

//Extracts the nth interleaved component
exports.deinterleave2 = function(v, n) {
  v = (v >>> n) & 0x55555555;
  v = (v | (v >>> 1))  & 0x33333333;
  v = (v | (v >>> 2))  & 0x0F0F0F0F;
  v = (v | (v >>> 4))  & 0x00FF00FF;
  v = (v | (v >>> 16)) & 0x000FFFF;
  return (v << 16) >> 16;
}


//Interleave bits of 3 coordinates, each with 10 bits.  Useful for fast octree codes
exports.interleave3 = function(x, y, z) {
  x &= 0x3FF;
  x  = (x | (x<<16)) & 4278190335;
  x  = (x | (x<<8))  & 251719695;
  x  = (x | (x<<4))  & 3272356035;
  x  = (x | (x<<2))  & 1227133513;

  y &= 0x3FF;
  y  = (y | (y<<16)) & 4278190335;
  y  = (y | (y<<8))  & 251719695;
  y  = (y | (y<<4))  & 3272356035;
  y  = (y | (y<<2))  & 1227133513;
  x |= (y << 1);
  
  z &= 0x3FF;
  z  = (z | (z<<16)) & 4278190335;
  z  = (z | (z<<8))  & 251719695;
  z  = (z | (z<<4))  & 3272356035;
  z  = (z | (z<<2))  & 1227133513;
  
  return x | (z << 2);
}

//Extracts nth interleaved component of a 3-tuple
exports.deinterleave3 = function(v, n) {
  v = (v >>> n)       & 1227133513;
  v = (v | (v>>>2))   & 3272356035;
  v = (v | (v>>>4))   & 251719695;
  v = (v | (v>>>8))   & 4278190335;
  v = (v | (v>>>16))  & 0x3FF;
  return (v<<22)>>22;
}

//Computes next combination in colexicographic order (this is mistakenly called nextPermutation on the bit twiddling hacks page)
exports.nextCombination = function(v) {
  var t = v | (v - 1);
  return (t + 1) | (((~t & -~t) - 1) >>> (countTrailingZeros(v) + 1));
}


},{}],34:[function(require,module,exports){
(function (module, exports) {
  'use strict';

  // Utils
  function assert (val, msg) {
    if (!val) throw new Error(msg || 'Assertion failed');
  }

  // Could use `inherits` module, but don't want to move from single file
  // architecture yet.
  function inherits (ctor, superCtor) {
    ctor.super_ = superCtor;
    var TempCtor = function () {};
    TempCtor.prototype = superCtor.prototype;
    ctor.prototype = new TempCtor();
    ctor.prototype.constructor = ctor;
  }

  // BN

  function BN (number, base, endian) {
    if (BN.isBN(number)) {
      return number;
    }

    this.negative = 0;
    this.words = null;
    this.length = 0;

    // Reduction context
    this.red = null;

    if (number !== null) {
      if (base === 'le' || base === 'be') {
        endian = base;
        base = 10;
      }

      this._init(number || 0, base || 10, endian || 'be');
    }
  }
  if (typeof module === 'object') {
    module.exports = BN;
  } else {
    exports.BN = BN;
  }

  BN.BN = BN;
  BN.wordSize = 26;

  var Buffer;
  try {
    Buffer = require('buf' + 'fer').Buffer;
  } catch (e) {
  }

  BN.isBN = function isBN (num) {
    if (num instanceof BN) {
      return true;
    }

    return num !== null && typeof num === 'object' &&
      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
  };

  BN.max = function max (left, right) {
    if (left.cmp(right) > 0) return left;
    return right;
  };

  BN.min = function min (left, right) {
    if (left.cmp(right) < 0) return left;
    return right;
  };

  BN.prototype._init = function init (number, base, endian) {
    if (typeof number === 'number') {
      return this._initNumber(number, base, endian);
    }

    if (typeof number === 'object') {
      return this._initArray(number, base, endian);
    }

    if (base === 'hex') {
      base = 16;
    }
    assert(base === (base | 0) && base >= 2 && base <= 36);

    number = number.toString().replace(/\s+/g, '');
    var start = 0;
    if (number[0] === '-') {
      start++;
    }

    if (base === 16) {
      this._parseHex(number, start);
    } else {
      this._parseBase(number, base, start);
    }

    if (number[0] === '-') {
      this.negative = 1;
    }

    this.strip();

    if (endian !== 'le') return;

    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initNumber = function _initNumber (number, base, endian) {
    if (number < 0) {
      this.negative = 1;
      number = -number;
    }
    if (number < 0x4000000) {
      this.words = [ number & 0x3ffffff ];
      this.length = 1;
    } else if (number < 0x10000000000000) {
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff
      ];
      this.length = 2;
    } else {
      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
      this.words = [
        number & 0x3ffffff,
        (number / 0x4000000) & 0x3ffffff,
        1
      ];
      this.length = 3;
    }

    if (endian !== 'le') return;

    // Reverse the bytes
    this._initArray(this.toArray(), base, endian);
  };

  BN.prototype._initArray = function _initArray (number, base, endian) {
    // Perhaps a Uint8Array
    assert(typeof number.length === 'number');
    if (number.length <= 0) {
      this.words = [ 0 ];
      this.length = 1;
      return this;
    }

    this.length = Math.ceil(number.length / 3);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    var off = 0;
    if (endian === 'be') {
      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    } else if (endian === 'le') {
      for (i = 0, j = 0; i < number.length; i += 3) {
        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
        this.words[j] |= (w << off) & 0x3ffffff;
        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
        off += 24;
        if (off >= 26) {
          off -= 26;
          j++;
        }
      }
    }
    return this.strip();
  };

  function parseHex (str, start, end) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r <<= 4;

      // 'a' - 'f'
      if (c >= 49 && c <= 54) {
        r |= c - 49 + 0xa;

      // 'A' - 'F'
      } else if (c >= 17 && c <= 22) {
        r |= c - 17 + 0xa;

      // '0' - '9'
      } else {
        r |= c & 0xf;
      }
    }
    return r;
  }

  BN.prototype._parseHex = function _parseHex (number, start) {
    // Create possibly bigger array to ensure that it fits the number
    this.length = Math.ceil((number.length - start) / 6);
    this.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      this.words[i] = 0;
    }

    var j, w;
    // Scan 24-bit chunks and add them to the number
    var off = 0;
    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
      w = parseHex(number, i, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
      off += 24;
      if (off >= 26) {
        off -= 26;
        j++;
      }
    }
    if (i + 6 !== start) {
      w = parseHex(number, start, i + 6);
      this.words[j] |= (w << off) & 0x3ffffff;
      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
    }
    this.strip();
  };

  function parseBase (str, start, end, mul) {
    var r = 0;
    var len = Math.min(str.length, end);
    for (var i = start; i < len; i++) {
      var c = str.charCodeAt(i) - 48;

      r *= mul;

      // 'a'
      if (c >= 49) {
        r += c - 49 + 0xa;

      // 'A'
      } else if (c >= 17) {
        r += c - 17 + 0xa;

      // '0' - '9'
      } else {
        r += c;
      }
    }
    return r;
  }

  BN.prototype._parseBase = function _parseBase (number, base, start) {
    // Initialize as zero
    this.words = [ 0 ];
    this.length = 1;

    // Find length of limb in base
    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
      limbLen++;
    }
    limbLen--;
    limbPow = (limbPow / base) | 0;

    var total = number.length - start;
    var mod = total % limbLen;
    var end = Math.min(total, total - mod) + start;

    var word = 0;
    for (var i = start; i < end; i += limbLen) {
      word = parseBase(number, i, i + limbLen, base);

      this.imuln(limbPow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }

    if (mod !== 0) {
      var pow = 1;
      word = parseBase(number, i, number.length, base);

      for (i = 0; i < mod; i++) {
        pow *= base;
      }

      this.imuln(pow);
      if (this.words[0] + word < 0x4000000) {
        this.words[0] += word;
      } else {
        this._iaddn(word);
      }
    }
  };

  BN.prototype.copy = function copy (dest) {
    dest.words = new Array(this.length);
    for (var i = 0; i < this.length; i++) {
      dest.words[i] = this.words[i];
    }
    dest.length = this.length;
    dest.negative = this.negative;
    dest.red = this.red;
  };

  BN.prototype.clone = function clone () {
    var r = new BN(null);
    this.copy(r);
    return r;
  };

  BN.prototype._expand = function _expand (size) {
    while (this.length < size) {
      this.words[this.length++] = 0;
    }
    return this;
  };

  // Remove leading `0` from `this`
  BN.prototype.strip = function strip () {
    while (this.length > 1 && this.words[this.length - 1] === 0) {
      this.length--;
    }
    return this._normSign();
  };

  BN.prototype._normSign = function _normSign () {
    // -0 = 0
    if (this.length === 1 && this.words[0] === 0) {
      this.negative = 0;
    }
    return this;
  };

  BN.prototype.inspect = function inspect () {
    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
  };

  /*

  var zeros = [];
  var groupSizes = [];
  var groupBases = [];

  var s = '';
  var i = -1;
  while (++i < BN.wordSize) {
    zeros[i] = s;
    s += '0';
  }
  groupSizes[0] = 0;
  groupSizes[1] = 0;
  groupBases[0] = 0;
  groupBases[1] = 0;
  var base = 2 - 1;
  while (++base < 36 + 1) {
    var groupSize = 0;
    var groupBase = 1;
    while (groupBase < (1 << BN.wordSize) / base) {
      groupBase *= base;
      groupSize += 1;
    }
    groupSizes[base] = groupSize;
    groupBases[base] = groupBase;
  }

  */

  var zeros = [
    '',
    '0',
    '00',
    '000',
    '0000',
    '00000',
    '000000',
    '0000000',
    '00000000',
    '000000000',
    '0000000000',
    '00000000000',
    '000000000000',
    '0000000000000',
    '00000000000000',
    '000000000000000',
    '0000000000000000',
    '00000000000000000',
    '000000000000000000',
    '0000000000000000000',
    '00000000000000000000',
    '000000000000000000000',
    '0000000000000000000000',
    '00000000000000000000000',
    '000000000000000000000000',
    '0000000000000000000000000'
  ];

  var groupSizes = [
    0, 0,
    25, 16, 12, 11, 10, 9, 8,
    8, 7, 7, 7, 7, 6, 6,
    6, 6, 6, 6, 6, 5, 5,
    5, 5, 5, 5, 5, 5, 5,
    5, 5, 5, 5, 5, 5, 5
  ];

  var groupBases = [
    0, 0,
    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
  ];

  BN.prototype.toString = function toString (base, padding) {
    base = base || 10;
    padding = padding | 0 || 1;

    var out;
    if (base === 16 || base === 'hex') {
      out = '';
      var off = 0;
      var carry = 0;
      for (var i = 0; i < this.length; i++) {
        var w = this.words[i];
        var word = (((w << off) | carry) & 0xffffff).toString(16);
        carry = (w >>> (24 - off)) & 0xffffff;
        if (carry !== 0 || i !== this.length - 1) {
          out = zeros[6 - word.length] + word + out;
        } else {
          out = word + out;
        }
        off += 2;
        if (off >= 26) {
          off -= 26;
          i--;
        }
      }
      if (carry !== 0) {
        out = carry.toString(16) + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    if (base === (base | 0) && base >= 2 && base <= 36) {
      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
      var groupSize = groupSizes[base];
      // var groupBase = Math.pow(base, groupSize);
      var groupBase = groupBases[base];
      out = '';
      var c = this.clone();
      c.negative = 0;
      while (!c.isZero()) {
        var r = c.modn(groupBase).toString(base);
        c = c.idivn(groupBase);

        if (!c.isZero()) {
          out = zeros[groupSize - r.length] + r + out;
        } else {
          out = r + out;
        }
      }
      if (this.isZero()) {
        out = '0' + out;
      }
      while (out.length % padding !== 0) {
        out = '0' + out;
      }
      if (this.negative !== 0) {
        out = '-' + out;
      }
      return out;
    }

    assert(false, 'Base should be between 2 and 36');
  };

  BN.prototype.toNumber = function toNumber () {
    var ret = this.words[0];
    if (this.length === 2) {
      ret += this.words[1] * 0x4000000;
    } else if (this.length === 3 && this.words[2] === 0x01) {
      // NOTE: at this stage it is known that the top bit is set
      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
    } else if (this.length > 2) {
      assert(false, 'Number can only safely store up to 53 bits');
    }
    return (this.negative !== 0) ? -ret : ret;
  };

  BN.prototype.toJSON = function toJSON () {
    return this.toString(16);
  };

  BN.prototype.toBuffer = function toBuffer (endian, length) {
    assert(typeof Buffer !== 'undefined');
    return this.toArrayLike(Buffer, endian, length);
  };

  BN.prototype.toArray = function toArray (endian, length) {
    return this.toArrayLike(Array, endian, length);
  };

  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
    var byteLength = this.byteLength();
    var reqLength = length || Math.max(1, byteLength);
    assert(byteLength <= reqLength, 'byte array longer than desired length');
    assert(reqLength > 0, 'Requested array length <= 0');

    this.strip();
    var littleEndian = endian === 'le';
    var res = new ArrayType(reqLength);

    var b, i;
    var q = this.clone();
    if (!littleEndian) {
      // Assume big-endian
      for (i = 0; i < reqLength - byteLength; i++) {
        res[i] = 0;
      }

      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[reqLength - i - 1] = b;
      }
    } else {
      for (i = 0; !q.isZero(); i++) {
        b = q.andln(0xff);
        q.iushrn(8);

        res[i] = b;
      }

      for (; i < reqLength; i++) {
        res[i] = 0;
      }
    }

    return res;
  };

  if (Math.clz32) {
    BN.prototype._countBits = function _countBits (w) {
      return 32 - Math.clz32(w);
    };
  } else {
    BN.prototype._countBits = function _countBits (w) {
      var t = w;
      var r = 0;
      if (t >= 0x1000) {
        r += 13;
        t >>>= 13;
      }
      if (t >= 0x40) {
        r += 7;
        t >>>= 7;
      }
      if (t >= 0x8) {
        r += 4;
        t >>>= 4;
      }
      if (t >= 0x02) {
        r += 2;
        t >>>= 2;
      }
      return r + t;
    };
  }

  BN.prototype._zeroBits = function _zeroBits (w) {
    // Short-cut
    if (w === 0) return 26;

    var t = w;
    var r = 0;
    if ((t & 0x1fff) === 0) {
      r += 13;
      t >>>= 13;
    }
    if ((t & 0x7f) === 0) {
      r += 7;
      t >>>= 7;
    }
    if ((t & 0xf) === 0) {
      r += 4;
      t >>>= 4;
    }
    if ((t & 0x3) === 0) {
      r += 2;
      t >>>= 2;
    }
    if ((t & 0x1) === 0) {
      r++;
    }
    return r;
  };

  // Return number of used bits in a BN
  BN.prototype.bitLength = function bitLength () {
    var w = this.words[this.length - 1];
    var hi = this._countBits(w);
    return (this.length - 1) * 26 + hi;
  };

  function toBitArray (num) {
    var w = new Array(num.bitLength());

    for (var bit = 0; bit < w.length; bit++) {
      var off = (bit / 26) | 0;
      var wbit = bit % 26;

      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
    }

    return w;
  }

  // Number of trailing zero bits
  BN.prototype.zeroBits = function zeroBits () {
    if (this.isZero()) return 0;

    var r = 0;
    for (var i = 0; i < this.length; i++) {
      var b = this._zeroBits(this.words[i]);
      r += b;
      if (b !== 26) break;
    }
    return r;
  };

  BN.prototype.byteLength = function byteLength () {
    return Math.ceil(this.bitLength() / 8);
  };

  BN.prototype.toTwos = function toTwos (width) {
    if (this.negative !== 0) {
      return this.abs().inotn(width).iaddn(1);
    }
    return this.clone();
  };

  BN.prototype.fromTwos = function fromTwos (width) {
    if (this.testn(width - 1)) {
      return this.notn(width).iaddn(1).ineg();
    }
    return this.clone();
  };

  BN.prototype.isNeg = function isNeg () {
    return this.negative !== 0;
  };

  // Return negative clone of `this`
  BN.prototype.neg = function neg () {
    return this.clone().ineg();
  };

  BN.prototype.ineg = function ineg () {
    if (!this.isZero()) {
      this.negative ^= 1;
    }

    return this;
  };

  // Or `num` with `this` in-place
  BN.prototype.iuor = function iuor (num) {
    while (this.length < num.length) {
      this.words[this.length++] = 0;
    }

    for (var i = 0; i < num.length; i++) {
      this.words[i] = this.words[i] | num.words[i];
    }

    return this.strip();
  };

  BN.prototype.ior = function ior (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuor(num);
  };

  // Or `num` with `this`
  BN.prototype.or = function or (num) {
    if (this.length > num.length) return this.clone().ior(num);
    return num.clone().ior(this);
  };

  BN.prototype.uor = function uor (num) {
    if (this.length > num.length) return this.clone().iuor(num);
    return num.clone().iuor(this);
  };

  // And `num` with `this` in-place
  BN.prototype.iuand = function iuand (num) {
    // b = min-length(num, this)
    var b;
    if (this.length > num.length) {
      b = num;
    } else {
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = this.words[i] & num.words[i];
    }

    this.length = b.length;

    return this.strip();
  };

  BN.prototype.iand = function iand (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuand(num);
  };

  // And `num` with `this`
  BN.prototype.and = function and (num) {
    if (this.length > num.length) return this.clone().iand(num);
    return num.clone().iand(this);
  };

  BN.prototype.uand = function uand (num) {
    if (this.length > num.length) return this.clone().iuand(num);
    return num.clone().iuand(this);
  };

  // Xor `num` with `this` in-place
  BN.prototype.iuxor = function iuxor (num) {
    // a.length > b.length
    var a;
    var b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    for (var i = 0; i < b.length; i++) {
      this.words[i] = a.words[i] ^ b.words[i];
    }

    if (this !== a) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = a.length;

    return this.strip();
  };

  BN.prototype.ixor = function ixor (num) {
    assert((this.negative | num.negative) === 0);
    return this.iuxor(num);
  };

  // Xor `num` with `this`
  BN.prototype.xor = function xor (num) {
    if (this.length > num.length) return this.clone().ixor(num);
    return num.clone().ixor(this);
  };

  BN.prototype.uxor = function uxor (num) {
    if (this.length > num.length) return this.clone().iuxor(num);
    return num.clone().iuxor(this);
  };

  // Not ``this`` with ``width`` bitwidth
  BN.prototype.inotn = function inotn (width) {
    assert(typeof width === 'number' && width >= 0);

    var bytesNeeded = Math.ceil(width / 26) | 0;
    var bitsLeft = width % 26;

    // Extend the buffer with leading zeroes
    this._expand(bytesNeeded);

    if (bitsLeft > 0) {
      bytesNeeded--;
    }

    // Handle complete words
    for (var i = 0; i < bytesNeeded; i++) {
      this.words[i] = ~this.words[i] & 0x3ffffff;
    }

    // Handle the residue
    if (bitsLeft > 0) {
      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
    }

    // And remove leading zeroes
    return this.strip();
  };

  BN.prototype.notn = function notn (width) {
    return this.clone().inotn(width);
  };

  // Set `bit` of `this`
  BN.prototype.setn = function setn (bit, val) {
    assert(typeof bit === 'number' && bit >= 0);

    var off = (bit / 26) | 0;
    var wbit = bit % 26;

    this._expand(off + 1);

    if (val) {
      this.words[off] = this.words[off] | (1 << wbit);
    } else {
      this.words[off] = this.words[off] & ~(1 << wbit);
    }

    return this.strip();
  };

  // Add `num` to `this` in-place
  BN.prototype.iadd = function iadd (num) {
    var r;

    // negative + positive
    if (this.negative !== 0 && num.negative === 0) {
      this.negative = 0;
      r = this.isub(num);
      this.negative ^= 1;
      return this._normSign();

    // positive + negative
    } else if (this.negative === 0 && num.negative !== 0) {
      num.negative = 0;
      r = this.isub(num);
      num.negative = 1;
      return r._normSign();
    }

    // a.length > b.length
    var a, b;
    if (this.length > num.length) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      this.words[i] = r & 0x3ffffff;
      carry = r >>> 26;
    }

    this.length = a.length;
    if (carry !== 0) {
      this.words[this.length] = carry;
      this.length++;
    // Copy the rest of the words
    } else if (a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    return this;
  };

  // Add `num` to `this`
  BN.prototype.add = function add (num) {
    var res;
    if (num.negative !== 0 && this.negative === 0) {
      num.negative = 0;
      res = this.sub(num);
      num.negative ^= 1;
      return res;
    } else if (num.negative === 0 && this.negative !== 0) {
      this.negative = 0;
      res = num.sub(this);
      this.negative = 1;
      return res;
    }

    if (this.length > num.length) return this.clone().iadd(num);

    return num.clone().iadd(this);
  };

  // Subtract `num` from `this` in-place
  BN.prototype.isub = function isub (num) {
    // this - (-num) = this + num
    if (num.negative !== 0) {
      num.negative = 0;
      var r = this.iadd(num);
      num.negative = 1;
      return r._normSign();

    // -this - num = -(this + num)
    } else if (this.negative !== 0) {
      this.negative = 0;
      this.iadd(num);
      this.negative = 1;
      return this._normSign();
    }

    // At this point both numbers are positive
    var cmp = this.cmp(num);

    // Optimization - zeroify
    if (cmp === 0) {
      this.negative = 0;
      this.length = 1;
      this.words[0] = 0;
      return this;
    }

    // a > b
    var a, b;
    if (cmp > 0) {
      a = this;
      b = num;
    } else {
      a = num;
      b = this;
    }

    var carry = 0;
    for (var i = 0; i < b.length; i++) {
      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }
    for (; carry !== 0 && i < a.length; i++) {
      r = (a.words[i] | 0) + carry;
      carry = r >> 26;
      this.words[i] = r & 0x3ffffff;
    }

    // Copy rest of the words
    if (carry === 0 && i < a.length && a !== this) {
      for (; i < a.length; i++) {
        this.words[i] = a.words[i];
      }
    }

    this.length = Math.max(this.length, i);

    if (a !== this) {
      this.negative = 1;
    }

    return this.strip();
  };

  // Subtract `num` from `this`
  BN.prototype.sub = function sub (num) {
    return this.clone().isub(num);
  };

  function smallMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    var len = (self.length + num.length) | 0;
    out.length = len;
    len = (len - 1) | 0;

    // Peel one iteration (compiler can't do it, because of code complexity)
    var a = self.words[0] | 0;
    var b = num.words[0] | 0;
    var r = a * b;

    var lo = r & 0x3ffffff;
    var carry = (r / 0x4000000) | 0;
    out.words[0] = lo;

    for (var k = 1; k < len; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = carry >>> 26;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = (k - j) | 0;
        a = self.words[i] | 0;
        b = num.words[j] | 0;
        r = a * b + rword;
        ncarry += (r / 0x4000000) | 0;
        rword = r & 0x3ffffff;
      }
      out.words[k] = rword | 0;
      carry = ncarry | 0;
    }
    if (carry !== 0) {
      out.words[k] = carry | 0;
    } else {
      out.length--;
    }

    return out.strip();
  }

  // TODO(indutny): it may be reasonable to omit it for users who don't need
  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
  // multiplication (like elliptic secp256k1).
  var comb10MulTo = function comb10MulTo (self, num, out) {
    var a = self.words;
    var b = num.words;
    var o = out.words;
    var c = 0;
    var lo;
    var mid;
    var hi;
    var a0 = a[0] | 0;
    var al0 = a0 & 0x1fff;
    var ah0 = a0 >>> 13;
    var a1 = a[1] | 0;
    var al1 = a1 & 0x1fff;
    var ah1 = a1 >>> 13;
    var a2 = a[2] | 0;
    var al2 = a2 & 0x1fff;
    var ah2 = a2 >>> 13;
    var a3 = a[3] | 0;
    var al3 = a3 & 0x1fff;
    var ah3 = a3 >>> 13;
    var a4 = a[4] | 0;
    var al4 = a4 & 0x1fff;
    var ah4 = a4 >>> 13;
    var a5 = a[5] | 0;
    var al5 = a5 & 0x1fff;
    var ah5 = a5 >>> 13;
    var a6 = a[6] | 0;
    var al6 = a6 & 0x1fff;
    var ah6 = a6 >>> 13;
    var a7 = a[7] | 0;
    var al7 = a7 & 0x1fff;
    var ah7 = a7 >>> 13;
    var a8 = a[8] | 0;
    var al8 = a8 & 0x1fff;
    var ah8 = a8 >>> 13;
    var a9 = a[9] | 0;
    var al9 = a9 & 0x1fff;
    var ah9 = a9 >>> 13;
    var b0 = b[0] | 0;
    var bl0 = b0 & 0x1fff;
    var bh0 = b0 >>> 13;
    var b1 = b[1] | 0;
    var bl1 = b1 & 0x1fff;
    var bh1 = b1 >>> 13;
    var b2 = b[2] | 0;
    var bl2 = b2 & 0x1fff;
    var bh2 = b2 >>> 13;
    var b3 = b[3] | 0;
    var bl3 = b3 & 0x1fff;
    var bh3 = b3 >>> 13;
    var b4 = b[4] | 0;
    var bl4 = b4 & 0x1fff;
    var bh4 = b4 >>> 13;
    var b5 = b[5] | 0;
    var bl5 = b5 & 0x1fff;
    var bh5 = b5 >>> 13;
    var b6 = b[6] | 0;
    var bl6 = b6 & 0x1fff;
    var bh6 = b6 >>> 13;
    var b7 = b[7] | 0;
    var bl7 = b7 & 0x1fff;
    var bh7 = b7 >>> 13;
    var b8 = b[8] | 0;
    var bl8 = b8 & 0x1fff;
    var bh8 = b8 >>> 13;
    var b9 = b[9] | 0;
    var bl9 = b9 & 0x1fff;
    var bh9 = b9 >>> 13;

    out.negative = self.negative ^ num.negative;
    out.length = 19;
    /* k = 0 */
    lo = Math.imul(al0, bl0);
    mid = Math.imul(al0, bh0);
    mid = (mid + Math.imul(ah0, bl0)) | 0;
    hi = Math.imul(ah0, bh0);
    var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
    w0 &= 0x3ffffff;
    /* k = 1 */
    lo = Math.imul(al1, bl0);
    mid = Math.imul(al1, bh0);
    mid = (mid + Math.imul(ah1, bl0)) | 0;
    hi = Math.imul(ah1, bh0);
    lo = (lo + Math.imul(al0, bl1)) | 0;
    mid = (mid + Math.imul(al0, bh1)) | 0;
    mid = (mid + Math.imul(ah0, bl1)) | 0;
    hi = (hi + Math.imul(ah0, bh1)) | 0;
    var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
    w1 &= 0x3ffffff;
    /* k = 2 */
    lo = Math.imul(al2, bl0);
    mid = Math.imul(al2, bh0);
    mid = (mid + Math.imul(ah2, bl0)) | 0;
    hi = Math.imul(ah2, bh0);
    lo = (lo + Math.imul(al1, bl1)) | 0;
    mid = (mid + Math.imul(al1, bh1)) | 0;
    mid = (mid + Math.imul(ah1, bl1)) | 0;
    hi = (hi + Math.imul(ah1, bh1)) | 0;
    lo = (lo + Math.imul(al0, bl2)) | 0;
    mid = (mid + Math.imul(al0, bh2)) | 0;
    mid = (mid + Math.imul(ah0, bl2)) | 0;
    hi = (hi + Math.imul(ah0, bh2)) | 0;
    var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0;
    w2 &= 0x3ffffff;
    /* k = 3 */
    lo = Math.imul(al3, bl0);
    mid = Math.imul(al3, bh0);
    mid = (mid + Math.imul(ah3, bl0)) | 0;
    hi = Math.imul(ah3, bh0);
    lo = (lo + Math.imul(al2, bl1)) | 0;
    mid = (mid + Math.imul(al2, bh1)) | 0;
    mid = (mid + Math.imul(ah2, bl1)) | 0;
    hi = (hi + Math.imul(ah2, bh1)) | 0;
    lo = (lo + Math.imul(al1, bl2)) | 0;
    mid = (mid + Math.imul(al1, bh2)) | 0;
    mid = (mid + Math.imul(ah1, bl2)) | 0;
    hi = (hi + Math.imul(ah1, bh2)) | 0;
    lo = (lo + Math.imul(al0, bl3)) | 0;
    mid = (mid + Math.imul(al0, bh3)) | 0;
    mid = (mid + Math.imul(ah0, bl3)) | 0;
    hi = (hi + Math.imul(ah0, bh3)) | 0;
    var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0;
    w3 &= 0x3ffffff;
    /* k = 4 */
    lo = Math.imul(al4, bl0);
    mid = Math.imul(al4, bh0);
    mid = (mid + Math.imul(ah4, bl0)) | 0;
    hi = Math.imul(ah4, bh0);
    lo = (lo + Math.imul(al3, bl1)) | 0;
    mid = (mid + Math.imul(al3, bh1)) | 0;
    mid = (mid + Math.imul(ah3, bl1)) | 0;
    hi = (hi + Math.imul(ah3, bh1)) | 0;
    lo = (lo + Math.imul(al2, bl2)) | 0;
    mid = (mid + Math.imul(al2, bh2)) | 0;
    mid = (mid + Math.imul(ah2, bl2)) | 0;
    hi = (hi + Math.imul(ah2, bh2)) | 0;
    lo = (lo + Math.imul(al1, bl3)) | 0;
    mid = (mid + Math.imul(al1, bh3)) | 0;
    mid = (mid + Math.imul(ah1, bl3)) | 0;
    hi = (hi + Math.imul(ah1, bh3)) | 0;
    lo = (lo + Math.imul(al0, bl4)) | 0;
    mid = (mid + Math.imul(al0, bh4)) | 0;
    mid = (mid + Math.imul(ah0, bl4)) | 0;
    hi = (hi + Math.imul(ah0, bh4)) | 0;
    var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0;
    w4 &= 0x3ffffff;
    /* k = 5 */
    lo = Math.imul(al5, bl0);
    mid = Math.imul(al5, bh0);
    mid = (mid + Math.imul(ah5, bl0)) | 0;
    hi = Math.imul(ah5, bh0);
    lo = (lo + Math.imul(al4, bl1)) | 0;
    mid = (mid + Math.imul(al4, bh1)) | 0;
    mid = (mid + Math.imul(ah4, bl1)) | 0;
    hi = (hi + Math.imul(ah4, bh1)) | 0;
    lo = (lo + Math.imul(al3, bl2)) | 0;
    mid = (mid + Math.imul(al3, bh2)) | 0;
    mid = (mid + Math.imul(ah3, bl2)) | 0;
    hi = (hi + Math.imul(ah3, bh2)) | 0;
    lo = (lo + Math.imul(al2, bl3)) | 0;
    mid = (mid + Math.imul(al2, bh3)) | 0;
    mid = (mid + Math.imul(ah2, bl3)) | 0;
    hi = (hi + Math.imul(ah2, bh3)) | 0;
    lo = (lo + Math.imul(al1, bl4)) | 0;
    mid = (mid + Math.imul(al1, bh4)) | 0;
    mid = (mid + Math.imul(ah1, bl4)) | 0;
    hi = (hi + Math.imul(ah1, bh4)) | 0;
    lo = (lo + Math.imul(al0, bl5)) | 0;
    mid = (mid + Math.imul(al0, bh5)) | 0;
    mid = (mid + Math.imul(ah0, bl5)) | 0;
    hi = (hi + Math.imul(ah0, bh5)) | 0;
    var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0;
    w5 &= 0x3ffffff;
    /* k = 6 */
    lo = Math.imul(al6, bl0);
    mid = Math.imul(al6, bh0);
    mid = (mid + Math.imul(ah6, bl0)) | 0;
    hi = Math.imul(ah6, bh0);
    lo = (lo + Math.imul(al5, bl1)) | 0;
    mid = (mid + Math.imul(al5, bh1)) | 0;
    mid = (mid + Math.imul(ah5, bl1)) | 0;
    hi = (hi + Math.imul(ah5, bh1)) | 0;
    lo = (lo + Math.imul(al4, bl2)) | 0;
    mid = (mid + Math.imul(al4, bh2)) | 0;
    mid = (mid + Math.imul(ah4, bl2)) | 0;
    hi = (hi + Math.imul(ah4, bh2)) | 0;
    lo = (lo + Math.imul(al3, bl3)) | 0;
    mid = (mid + Math.imul(al3, bh3)) | 0;
    mid = (mid + Math.imul(ah3, bl3)) | 0;
    hi = (hi + Math.imul(ah3, bh3)) | 0;
    lo = (lo + Math.imul(al2, bl4)) | 0;
    mid = (mid + Math.imul(al2, bh4)) | 0;
    mid = (mid + Math.imul(ah2, bl4)) | 0;
    hi = (hi + Math.imul(ah2, bh4)) | 0;
    lo = (lo + Math.imul(al1, bl5)) | 0;
    mid = (mid + Math.imul(al1, bh5)) | 0;
    mid = (mid + Math.imul(ah1, bl5)) | 0;
    hi = (hi + Math.imul(ah1, bh5)) | 0;
    lo = (lo + Math.imul(al0, bl6)) | 0;
    mid = (mid + Math.imul(al0, bh6)) | 0;
    mid = (mid + Math.imul(ah0, bl6)) | 0;
    hi = (hi + Math.imul(ah0, bh6)) | 0;
    var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0;
    w6 &= 0x3ffffff;
    /* k = 7 */
    lo = Math.imul(al7, bl0);
    mid = Math.imul(al7, bh0);
    mid = (mid + Math.imul(ah7, bl0)) | 0;
    hi = Math.imul(ah7, bh0);
    lo = (lo + Math.imul(al6, bl1)) | 0;
    mid = (mid + Math.imul(al6, bh1)) | 0;
    mid = (mid + Math.imul(ah6, bl1)) | 0;
    hi = (hi + Math.imul(ah6, bh1)) | 0;
    lo = (lo + Math.imul(al5, bl2)) | 0;
    mid = (mid + Math.imul(al5, bh2)) | 0;
    mid = (mid + Math.imul(ah5, bl2)) | 0;
    hi = (hi + Math.imul(ah5, bh2)) | 0;
    lo = (lo + Math.imul(al4, bl3)) | 0;
    mid = (mid + Math.imul(al4, bh3)) | 0;
    mid = (mid + Math.imul(ah4, bl3)) | 0;
    hi = (hi + Math.imul(ah4, bh3)) | 0;
    lo = (lo + Math.imul(al3, bl4)) | 0;
    mid = (mid + Math.imul(al3, bh4)) | 0;
    mid = (mid + Math.imul(ah3, bl4)) | 0;
    hi = (hi + Math.imul(ah3, bh4)) | 0;
    lo = (lo + Math.imul(al2, bl5)) | 0;
    mid = (mid + Math.imul(al2, bh5)) | 0;
    mid = (mid + Math.imul(ah2, bl5)) | 0;
    hi = (hi + Math.imul(ah2, bh5)) | 0;
    lo = (lo + Math.imul(al1, bl6)) | 0;
    mid = (mid + Math.imul(al1, bh6)) | 0;
    mid = (mid + Math.imul(ah1, bl6)) | 0;
    hi = (hi + Math.imul(ah1, bh6)) | 0;
    lo = (lo + Math.imul(al0, bl7)) | 0;
    mid = (mid + Math.imul(al0, bh7)) | 0;
    mid = (mid + Math.imul(ah0, bl7)) | 0;
    hi = (hi + Math.imul(ah0, bh7)) | 0;
    var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0;
    w7 &= 0x3ffffff;
    /* k = 8 */
    lo = Math.imul(al8, bl0);
    mid = Math.imul(al8, bh0);
    mid = (mid + Math.imul(ah8, bl0)) | 0;
    hi = Math.imul(ah8, bh0);
    lo = (lo + Math.imul(al7, bl1)) | 0;
    mid = (mid + Math.imul(al7, bh1)) | 0;
    mid = (mid + Math.imul(ah7, bl1)) | 0;
    hi = (hi + Math.imul(ah7, bh1)) | 0;
    lo = (lo + Math.imul(al6, bl2)) | 0;
    mid = (mid + Math.imul(al6, bh2)) | 0;
    mid = (mid + Math.imul(ah6, bl2)) | 0;
    hi = (hi + Math.imul(ah6, bh2)) | 0;
    lo = (lo + Math.imul(al5, bl3)) | 0;
    mid = (mid + Math.imul(al5, bh3)) | 0;
    mid = (mid + Math.imul(ah5, bl3)) | 0;
    hi = (hi + Math.imul(ah5, bh3)) | 0;
    lo = (lo + Math.imul(al4, bl4)) | 0;
    mid = (mid + Math.imul(al4, bh4)) | 0;
    mid = (mid + Math.imul(ah4, bl4)) | 0;
    hi = (hi + Math.imul(ah4, bh4)) | 0;
    lo = (lo + Math.imul(al3, bl5)) | 0;
    mid = (mid + Math.imul(al3, bh5)) | 0;
    mid = (mid + Math.imul(ah3, bl5)) | 0;
    hi = (hi + Math.imul(ah3, bh5)) | 0;
    lo = (lo + Math.imul(al2, bl6)) | 0;
    mid = (mid + Math.imul(al2, bh6)) | 0;
    mid = (mid + Math.imul(ah2, bl6)) | 0;
    hi = (hi + Math.imul(ah2, bh6)) | 0;
    lo = (lo + Math.imul(al1, bl7)) | 0;
    mid = (mid + Math.imul(al1, bh7)) | 0;
    mid = (mid + Math.imul(ah1, bl7)) | 0;
    hi = (hi + Math.imul(ah1, bh7)) | 0;
    lo = (lo + Math.imul(al0, bl8)) | 0;
    mid = (mid + Math.imul(al0, bh8)) | 0;
    mid = (mid + Math.imul(ah0, bl8)) | 0;
    hi = (hi + Math.imul(ah0, bh8)) | 0;
    var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0;
    w8 &= 0x3ffffff;
    /* k = 9 */
    lo = Math.imul(al9, bl0);
    mid = Math.imul(al9, bh0);
    mid = (mid + Math.imul(ah9, bl0)) | 0;
    hi = Math.imul(ah9, bh0);
    lo = (lo + Math.imul(al8, bl1)) | 0;
    mid = (mid + Math.imul(al8, bh1)) | 0;
    mid = (mid + Math.imul(ah8, bl1)) | 0;
    hi = (hi + Math.imul(ah8, bh1)) | 0;
    lo = (lo + Math.imul(al7, bl2)) | 0;
    mid = (mid + Math.imul(al7, bh2)) | 0;
    mid = (mid + Math.imul(ah7, bl2)) | 0;
    hi = (hi + Math.imul(ah7, bh2)) | 0;
    lo = (lo + Math.imul(al6, bl3)) | 0;
    mid = (mid + Math.imul(al6, bh3)) | 0;
    mid = (mid + Math.imul(ah6, bl3)) | 0;
    hi = (hi + Math.imul(ah6, bh3)) | 0;
    lo = (lo + Math.imul(al5, bl4)) | 0;
    mid = (mid + Math.imul(al5, bh4)) | 0;
    mid = (mid + Math.imul(ah5, bl4)) | 0;
    hi = (hi + Math.imul(ah5, bh4)) | 0;
    lo = (lo + Math.imul(al4, bl5)) | 0;
    mid = (mid + Math.imul(al4, bh5)) | 0;
    mid = (mid + Math.imul(ah4, bl5)) | 0;
    hi = (hi + Math.imul(ah4, bh5)) | 0;
    lo = (lo + Math.imul(al3, bl6)) | 0;
    mid = (mid + Math.imul(al3, bh6)) | 0;
    mid = (mid + Math.imul(ah3, bl6)) | 0;
    hi = (hi + Math.imul(ah3, bh6)) | 0;
    lo = (lo + Math.imul(al2, bl7)) | 0;
    mid = (mid + Math.imul(al2, bh7)) | 0;
    mid = (mid + Math.imul(ah2, bl7)) | 0;
    hi = (hi + Math.imul(ah2, bh7)) | 0;
    lo = (lo + Math.imul(al1, bl8)) | 0;
    mid = (mid + Math.imul(al1, bh8)) | 0;
    mid = (mid + Math.imul(ah1, bl8)) | 0;
    hi = (hi + Math.imul(ah1, bh8)) | 0;
    lo = (lo + Math.imul(al0, bl9)) | 0;
    mid = (mid + Math.imul(al0, bh9)) | 0;
    mid = (mid + Math.imul(ah0, bl9)) | 0;
    hi = (hi + Math.imul(ah0, bh9)) | 0;
    var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0;
    w9 &= 0x3ffffff;
    /* k = 10 */
    lo = Math.imul(al9, bl1);
    mid = Math.imul(al9, bh1);
    mid = (mid + Math.imul(ah9, bl1)) | 0;
    hi = Math.imul(ah9, bh1);
    lo = (lo + Math.imul(al8, bl2)) | 0;
    mid = (mid + Math.imul(al8, bh2)) | 0;
    mid = (mid + Math.imul(ah8, bl2)) | 0;
    hi = (hi + Math.imul(ah8, bh2)) | 0;
    lo = (lo + Math.imul(al7, bl3)) | 0;
    mid = (mid + Math.imul(al7, bh3)) | 0;
    mid = (mid + Math.imul(ah7, bl3)) | 0;
    hi = (hi + Math.imul(ah7, bh3)) | 0;
    lo = (lo + Math.imul(al6, bl4)) | 0;
    mid = (mid + Math.imul(al6, bh4)) | 0;
    mid = (mid + Math.imul(ah6, bl4)) | 0;
    hi = (hi + Math.imul(ah6, bh4)) | 0;
    lo = (lo + Math.imul(al5, bl5)) | 0;
    mid = (mid + Math.imul(al5, bh5)) | 0;
    mid = (mid + Math.imul(ah5, bl5)) | 0;
    hi = (hi + Math.imul(ah5, bh5)) | 0;
    lo = (lo + Math.imul(al4, bl6)) | 0;
    mid = (mid + Math.imul(al4, bh6)) | 0;
    mid = (mid + Math.imul(ah4, bl6)) | 0;
    hi = (hi + Math.imul(ah4, bh6)) | 0;
    lo = (lo + Math.imul(al3, bl7)) | 0;
    mid = (mid + Math.imul(al3, bh7)) | 0;
    mid = (mid + Math.imul(ah3, bl7)) | 0;
    hi = (hi + Math.imul(ah3, bh7)) | 0;
    lo = (lo + Math.imul(al2, bl8)) | 0;
    mid = (mid + Math.imul(al2, bh8)) | 0;
    mid = (mid + Math.imul(ah2, bl8)) | 0;
    hi = (hi + Math.imul(ah2, bh8)) | 0;
    lo = (lo + Math.imul(al1, bl9)) | 0;
    mid = (mid + Math.imul(al1, bh9)) | 0;
    mid = (mid + Math.imul(ah1, bl9)) | 0;
    hi = (hi + Math.imul(ah1, bh9)) | 0;
    var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0;
    w10 &= 0x3ffffff;
    /* k = 11 */
    lo = Math.imul(al9, bl2);
    mid = Math.imul(al9, bh2);
    mid = (mid + Math.imul(ah9, bl2)) | 0;
    hi = Math.imul(ah9, bh2);
    lo = (lo + Math.imul(al8, bl3)) | 0;
    mid = (mid + Math.imul(al8, bh3)) | 0;
    mid = (mid + Math.imul(ah8, bl3)) | 0;
    hi = (hi + Math.imul(ah8, bh3)) | 0;
    lo = (lo + Math.imul(al7, bl4)) | 0;
    mid = (mid + Math.imul(al7, bh4)) | 0;
    mid = (mid + Math.imul(ah7, bl4)) | 0;
    hi = (hi + Math.imul(ah7, bh4)) | 0;
    lo = (lo + Math.imul(al6, bl5)) | 0;
    mid = (mid + Math.imul(al6, bh5)) | 0;
    mid = (mid + Math.imul(ah6, bl5)) | 0;
    hi = (hi + Math.imul(ah6, bh5)) | 0;
    lo = (lo + Math.imul(al5, bl6)) | 0;
    mid = (mid + Math.imul(al5, bh6)) | 0;
    mid = (mid + Math.imul(ah5, bl6)) | 0;
    hi = (hi + Math.imul(ah5, bh6)) | 0;
    lo = (lo + Math.imul(al4, bl7)) | 0;
    mid = (mid + Math.imul(al4, bh7)) | 0;
    mid = (mid + Math.imul(ah4, bl7)) | 0;
    hi = (hi + Math.imul(ah4, bh7)) | 0;
    lo = (lo + Math.imul(al3, bl8)) | 0;
    mid = (mid + Math.imul(al3, bh8)) | 0;
    mid = (mid + Math.imul(ah3, bl8)) | 0;
    hi = (hi + Math.imul(ah3, bh8)) | 0;
    lo = (lo + Math.imul(al2, bl9)) | 0;
    mid = (mid + Math.imul(al2, bh9)) | 0;
    mid = (mid + Math.imul(ah2, bl9)) | 0;
    hi = (hi + Math.imul(ah2, bh9)) | 0;
    var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0;
    w11 &= 0x3ffffff;
    /* k = 12 */
    lo = Math.imul(al9, bl3);
    mid = Math.imul(al9, bh3);
    mid = (mid + Math.imul(ah9, bl3)) | 0;
    hi = Math.imul(ah9, bh3);
    lo = (lo + Math.imul(al8, bl4)) | 0;
    mid = (mid + Math.imul(al8, bh4)) | 0;
    mid = (mid + Math.imul(ah8, bl4)) | 0;
    hi = (hi + Math.imul(ah8, bh4)) | 0;
    lo = (lo + Math.imul(al7, bl5)) | 0;
    mid = (mid + Math.imul(al7, bh5)) | 0;
    mid = (mid + Math.imul(ah7, bl5)) | 0;
    hi = (hi + Math.imul(ah7, bh5)) | 0;
    lo = (lo + Math.imul(al6, bl6)) | 0;
    mid = (mid + Math.imul(al6, bh6)) | 0;
    mid = (mid + Math.imul(ah6, bl6)) | 0;
    hi = (hi + Math.imul(ah6, bh6)) | 0;
    lo = (lo + Math.imul(al5, bl7)) | 0;
    mid = (mid + Math.imul(al5, bh7)) | 0;
    mid = (mid + Math.imul(ah5, bl7)) | 0;
    hi = (hi + Math.imul(ah5, bh7)) | 0;
    lo = (lo + Math.imul(al4, bl8)) | 0;
    mid = (mid + Math.imul(al4, bh8)) | 0;
    mid = (mid + Math.imul(ah4, bl8)) | 0;
    hi = (hi + Math.imul(ah4, bh8)) | 0;
    lo = (lo + Math.imul(al3, bl9)) | 0;
    mid = (mid + Math.imul(al3, bh9)) | 0;
    mid = (mid + Math.imul(ah3, bl9)) | 0;
    hi = (hi + Math.imul(ah3, bh9)) | 0;
    var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0;
    w12 &= 0x3ffffff;
    /* k = 13 */
    lo = Math.imul(al9, bl4);
    mid = Math.imul(al9, bh4);
    mid = (mid + Math.imul(ah9, bl4)) | 0;
    hi = Math.imul(ah9, bh4);
    lo = (lo + Math.imul(al8, bl5)) | 0;
    mid = (mid + Math.imul(al8, bh5)) | 0;
    mid = (mid + Math.imul(ah8, bl5)) | 0;
    hi = (hi + Math.imul(ah8, bh5)) | 0;
    lo = (lo + Math.imul(al7, bl6)) | 0;
    mid = (mid + Math.imul(al7, bh6)) | 0;
    mid = (mid + Math.imul(ah7, bl6)) | 0;
    hi = (hi + Math.imul(ah7, bh6)) | 0;
    lo = (lo + Math.imul(al6, bl7)) | 0;
    mid = (mid + Math.imul(al6, bh7)) | 0;
    mid = (mid + Math.imul(ah6, bl7)) | 0;
    hi = (hi + Math.imul(ah6, bh7)) | 0;
    lo = (lo + Math.imul(al5, bl8)) | 0;
    mid = (mid + Math.imul(al5, bh8)) | 0;
    mid = (mid + Math.imul(ah5, bl8)) | 0;
    hi = (hi + Math.imul(ah5, bh8)) | 0;
    lo = (lo + Math.imul(al4, bl9)) | 0;
    mid = (mid + Math.imul(al4, bh9)) | 0;
    mid = (mid + Math.imul(ah4, bl9)) | 0;
    hi = (hi + Math.imul(ah4, bh9)) | 0;
    var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0;
    w13 &= 0x3ffffff;
    /* k = 14 */
    lo = Math.imul(al9, bl5);
    mid = Math.imul(al9, bh5);
    mid = (mid + Math.imul(ah9, bl5)) | 0;
    hi = Math.imul(ah9, bh5);
    lo = (lo + Math.imul(al8, bl6)) | 0;
    mid = (mid + Math.imul(al8, bh6)) | 0;
    mid = (mid + Math.imul(ah8, bl6)) | 0;
    hi = (hi + Math.imul(ah8, bh6)) | 0;
    lo = (lo + Math.imul(al7, bl7)) | 0;
    mid = (mid + Math.imul(al7, bh7)) | 0;
    mid = (mid + Math.imul(ah7, bl7)) | 0;
    hi = (hi + Math.imul(ah7, bh7)) | 0;
    lo = (lo + Math.imul(al6, bl8)) | 0;
    mid = (mid + Math.imul(al6, bh8)) | 0;
    mid = (mid + Math.imul(ah6, bl8)) | 0;
    hi = (hi + Math.imul(ah6, bh8)) | 0;
    lo = (lo + Math.imul(al5, bl9)) | 0;
    mid = (mid + Math.imul(al5, bh9)) | 0;
    mid = (mid + Math.imul(ah5, bl9)) | 0;
    hi = (hi + Math.imul(ah5, bh9)) | 0;
    var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0;
    w14 &= 0x3ffffff;
    /* k = 15 */
    lo = Math.imul(al9, bl6);
    mid = Math.imul(al9, bh6);
    mid = (mid + Math.imul(ah9, bl6)) | 0;
    hi = Math.imul(ah9, bh6);
    lo = (lo + Math.imul(al8, bl7)) | 0;
    mid = (mid + Math.imul(al8, bh7)) | 0;
    mid = (mid + Math.imul(ah8, bl7)) | 0;
    hi = (hi + Math.imul(ah8, bh7)) | 0;
    lo = (lo + Math.imul(al7, bl8)) | 0;
    mid = (mid + Math.imul(al7, bh8)) | 0;
    mid = (mid + Math.imul(ah7, bl8)) | 0;
    hi = (hi + Math.imul(ah7, bh8)) | 0;
    lo = (lo + Math.imul(al6, bl9)) | 0;
    mid = (mid + Math.imul(al6, bh9)) | 0;
    mid = (mid + Math.imul(ah6, bl9)) | 0;
    hi = (hi + Math.imul(ah6, bh9)) | 0;
    var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0;
    w15 &= 0x3ffffff;
    /* k = 16 */
    lo = Math.imul(al9, bl7);
    mid = Math.imul(al9, bh7);
    mid = (mid + Math.imul(ah9, bl7)) | 0;
    hi = Math.imul(ah9, bh7);
    lo = (lo + Math.imul(al8, bl8)) | 0;
    mid = (mid + Math.imul(al8, bh8)) | 0;
    mid = (mid + Math.imul(ah8, bl8)) | 0;
    hi = (hi + Math.imul(ah8, bh8)) | 0;
    lo = (lo + Math.imul(al7, bl9)) | 0;
    mid = (mid + Math.imul(al7, bh9)) | 0;
    mid = (mid + Math.imul(ah7, bl9)) | 0;
    hi = (hi + Math.imul(ah7, bh9)) | 0;
    var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0;
    w16 &= 0x3ffffff;
    /* k = 17 */
    lo = Math.imul(al9, bl8);
    mid = Math.imul(al9, bh8);
    mid = (mid + Math.imul(ah9, bl8)) | 0;
    hi = Math.imul(ah9, bh8);
    lo = (lo + Math.imul(al8, bl9)) | 0;
    mid = (mid + Math.imul(al8, bh9)) | 0;
    mid = (mid + Math.imul(ah8, bl9)) | 0;
    hi = (hi + Math.imul(ah8, bh9)) | 0;
    var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0;
    w17 &= 0x3ffffff;
    /* k = 18 */
    lo = Math.imul(al9, bl9);
    mid = Math.imul(al9, bh9);
    mid = (mid + Math.imul(ah9, bl9)) | 0;
    hi = Math.imul(ah9, bh9);
    var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
    c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0;
    w18 &= 0x3ffffff;
    o[0] = w0;
    o[1] = w1;
    o[2] = w2;
    o[3] = w3;
    o[4] = w4;
    o[5] = w5;
    o[6] = w6;
    o[7] = w7;
    o[8] = w8;
    o[9] = w9;
    o[10] = w10;
    o[11] = w11;
    o[12] = w12;
    o[13] = w13;
    o[14] = w14;
    o[15] = w15;
    o[16] = w16;
    o[17] = w17;
    o[18] = w18;
    if (c !== 0) {
      o[19] = c;
      out.length++;
    }
    return out;
  };

  // Polyfill comb
  if (!Math.imul) {
    comb10MulTo = smallMulTo;
  }

  function bigMulTo (self, num, out) {
    out.negative = num.negative ^ self.negative;
    out.length = self.length + num.length;

    var carry = 0;
    var hncarry = 0;
    for (var k = 0; k < out.length - 1; k++) {
      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
      // note that ncarry could be >= 0x3ffffff
      var ncarry = hncarry;
      hncarry = 0;
      var rword = carry & 0x3ffffff;
      var maxJ = Math.min(k, num.length - 1);
      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
        var i = k - j;
        var a = self.words[i] | 0;
        var b = num.words[j] | 0;
        var r = a * b;

        var lo = r & 0x3ffffff;
        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
        lo = (lo + rword) | 0;
        rword = lo & 0x3ffffff;
        ncarry = (ncarry + (lo >>> 26)) | 0;

        hncarry += ncarry >>> 26;
        ncarry &= 0x3ffffff;
      }
      out.words[k] = rword;
      carry = ncarry;
      ncarry = hncarry;
    }
    if (carry !== 0) {
      out.words[k] = carry;
    } else {
      out.length--;
    }

    return out.strip();
  }

  function jumboMulTo (self, num, out) {
    var fftm = new FFTM();
    return fftm.mulp(self, num, out);
  }

  BN.prototype.mulTo = function mulTo (num, out) {
    var res;
    var len = this.length + num.length;
    if (this.length === 10 && num.length === 10) {
      res = comb10MulTo(this, num, out);
    } else if (len < 63) {
      res = smallMulTo(this, num, out);
    } else if (len < 1024) {
      res = bigMulTo(this, num, out);
    } else {
      res = jumboMulTo(this, num, out);
    }

    return res;
  };

  // Cooley-Tukey algorithm for FFT
  // slightly revisited to rely on looping instead of recursion

  function FFTM (x, y) {
    this.x = x;
    this.y = y;
  }

  FFTM.prototype.makeRBT = function makeRBT (N) {
    var t = new Array(N);
    var l = BN.prototype._countBits(N) - 1;
    for (var i = 0; i < N; i++) {
      t[i] = this.revBin(i, l, N);
    }

    return t;
  };

  // Returns binary-reversed representation of `x`
  FFTM.prototype.revBin = function revBin (x, l, N) {
    if (x === 0 || x === N - 1) return x;

    var rb = 0;
    for (var i = 0; i < l; i++) {
      rb |= (x & 1) << (l - i - 1);
      x >>= 1;
    }

    return rb;
  };

  // Performs "tweedling" phase, therefore 'emulating'
  // behaviour of the recursive algorithm
  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
    for (var i = 0; i < N; i++) {
      rtws[i] = rws[rbt[i]];
      itws[i] = iws[rbt[i]];
    }
  };

  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
    this.permute(rbt, rws, iws, rtws, itws, N);

    for (var s = 1; s < N; s <<= 1) {
      var l = s << 1;

      var rtwdf = Math.cos(2 * Math.PI / l);
      var itwdf = Math.sin(2 * Math.PI / l);

      for (var p = 0; p < N; p += l) {
        var rtwdf_ = rtwdf;
        var itwdf_ = itwdf;

        for (var j = 0; j < s; j++) {
          var re = rtws[p + j];
          var ie = itws[p + j];

          var ro = rtws[p + j + s];
          var io = itws[p + j + s];

          var rx = rtwdf_ * ro - itwdf_ * io;

          io = rtwdf_ * io + itwdf_ * ro;
          ro = rx;

          rtws[p + j] = re + ro;
          itws[p + j] = ie + io;

          rtws[p + j + s] = re - ro;
          itws[p + j + s] = ie - io;

          /* jshint maxdepth : false */
          if (j !== l) {
            rx = rtwdf * rtwdf_ - itwdf * itwdf_;

            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
            rtwdf_ = rx;
          }
        }
      }
    }
  };

  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
    var N = Math.max(m, n) | 1;
    var odd = N & 1;
    var i = 0;
    for (N = N / 2 | 0; N; N = N >>> 1) {
      i++;
    }

    return 1 << i + 1 + odd;
  };

  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
    if (N <= 1) return;

    for (var i = 0; i < N / 2; i++) {
      var t = rws[i];

      rws[i] = rws[N - i - 1];
      rws[N - i - 1] = t;

      t = iws[i];

      iws[i] = -iws[N - i - 1];
      iws[N - i - 1] = -t;
    }
  };

  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
    var carry = 0;
    for (var i = 0; i < N / 2; i++) {
      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
        Math.round(ws[2 * i] / N) +
        carry;

      ws[i] = w & 0x3ffffff;

      if (w < 0x4000000) {
        carry = 0;
      } else {
        carry = w / 0x4000000 | 0;
      }
    }

    return ws;
  };

  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
    var carry = 0;
    for (var i = 0; i < len; i++) {
      carry = carry + (ws[i] | 0);

      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
    }

    // Pad with zeroes
    for (i = 2 * len; i < N; ++i) {
      rws[i] = 0;
    }

    assert(carry === 0);
    assert((carry & ~0x1fff) === 0);
  };

  FFTM.prototype.stub = function stub (N) {
    var ph = new Array(N);
    for (var i = 0; i < N; i++) {
      ph[i] = 0;
    }

    return ph;
  };

  FFTM.prototype.mulp = function mulp (x, y, out) {
    var N = 2 * this.guessLen13b(x.length, y.length);

    var rbt = this.makeRBT(N);

    var _ = this.stub(N);

    var rws = new Array(N);
    var rwst = new Array(N);
    var iwst = new Array(N);

    var nrws = new Array(N);
    var nrwst = new Array(N);
    var niwst = new Array(N);

    var rmws = out.words;
    rmws.length = N;

    this.convert13b(x.words, x.length, rws, N);
    this.convert13b(y.words, y.length, nrws, N);

    this.transform(rws, _, rwst, iwst, N, rbt);
    this.transform(nrws, _, nrwst, niwst, N, rbt);

    for (var i = 0; i < N; i++) {
      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
      rwst[i] = rx;
    }

    this.conjugate(rwst, iwst, N);
    this.transform(rwst, iwst, rmws, _, N, rbt);
    this.conjugate(rmws, _, N);
    this.normalize13b(rmws, N);

    out.negative = x.negative ^ y.negative;
    out.length = x.length + y.length;
    return out.strip();
  };

  // Multiply `this` by `num`
  BN.prototype.mul = function mul (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return this.mulTo(num, out);
  };

  // Multiply employing FFT
  BN.prototype.mulf = function mulf (num) {
    var out = new BN(null);
    out.words = new Array(this.length + num.length);
    return jumboMulTo(this, num, out);
  };

  // In-place Multiplication
  BN.prototype.imul = function imul (num) {
    return this.clone().mulTo(num, this);
  };

  BN.prototype.imuln = function imuln (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);

    // Carry
    var carry = 0;
    for (var i = 0; i < this.length; i++) {
      var w = (this.words[i] | 0) * num;
      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
      carry >>= 26;
      carry += (w / 0x4000000) | 0;
      // NOTE: lo is 27bit maximum
      carry += lo >>> 26;
      this.words[i] = lo & 0x3ffffff;
    }

    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }

    return this;
  };

  BN.prototype.muln = function muln (num) {
    return this.clone().imuln(num);
  };

  // `this` * `this`
  BN.prototype.sqr = function sqr () {
    return this.mul(this);
  };

  // `this` * `this` in-place
  BN.prototype.isqr = function isqr () {
    return this.imul(this.clone());
  };

  // Math.pow(`this`, `num`)
  BN.prototype.pow = function pow (num) {
    var w = toBitArray(num);
    if (w.length === 0) return new BN(1);

    // Skip leading zeroes
    var res = this;
    for (var i = 0; i < w.length; i++, res = res.sqr()) {
      if (w[i] !== 0) break;
    }

    if (++i < w.length) {
      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
        if (w[i] === 0) continue;

        res = res.mul(q);
      }
    }

    return res;
  };

  // Shift-left in-place
  BN.prototype.iushln = function iushln (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;
    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
    var i;

    if (r !== 0) {
      var carry = 0;

      for (i = 0; i < this.length; i++) {
        var newCarry = this.words[i] & carryMask;
        var c = ((this.words[i] | 0) - newCarry) << r;
        this.words[i] = c | carry;
        carry = newCarry >>> (26 - r);
      }

      if (carry) {
        this.words[i] = carry;
        this.length++;
      }
    }

    if (s !== 0) {
      for (i = this.length - 1; i >= 0; i--) {
        this.words[i + s] = this.words[i];
      }

      for (i = 0; i < s; i++) {
        this.words[i] = 0;
      }

      this.length += s;
    }

    return this.strip();
  };

  BN.prototype.ishln = function ishln (bits) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushln(bits);
  };

  // Shift-right in-place
  // NOTE: `hint` is a lowest bit before trailing zeroes
  // NOTE: if `extended` is present - it will be filled with destroyed bits
  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
    assert(typeof bits === 'number' && bits >= 0);
    var h;
    if (hint) {
      h = (hint - (hint % 26)) / 26;
    } else {
      h = 0;
    }

    var r = bits % 26;
    var s = Math.min((bits - r) / 26, this.length);
    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
    var maskedWords = extended;

    h -= s;
    h = Math.max(0, h);

    // Extended mode, copy masked part
    if (maskedWords) {
      for (var i = 0; i < s; i++) {
        maskedWords.words[i] = this.words[i];
      }
      maskedWords.length = s;
    }

    if (s === 0) {
      // No-op, we should not move anything at all
    } else if (this.length > s) {
      this.length -= s;
      for (i = 0; i < this.length; i++) {
        this.words[i] = this.words[i + s];
      }
    } else {
      this.words[0] = 0;
      this.length = 1;
    }

    var carry = 0;
    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
      var word = this.words[i] | 0;
      this.words[i] = (carry << (26 - r)) | (word >>> r);
      carry = word & mask;
    }

    // Push carried bits as a mask
    if (maskedWords && carry !== 0) {
      maskedWords.words[maskedWords.length++] = carry;
    }

    if (this.length === 0) {
      this.words[0] = 0;
      this.length = 1;
    }

    return this.strip();
  };

  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
    // TODO(indutny): implement me
    assert(this.negative === 0);
    return this.iushrn(bits, hint, extended);
  };

  // Shift-left
  BN.prototype.shln = function shln (bits) {
    return this.clone().ishln(bits);
  };

  BN.prototype.ushln = function ushln (bits) {
    return this.clone().iushln(bits);
  };

  // Shift-right
  BN.prototype.shrn = function shrn (bits) {
    return this.clone().ishrn(bits);
  };

  BN.prototype.ushrn = function ushrn (bits) {
    return this.clone().iushrn(bits);
  };

  // Test if n bit is set
  BN.prototype.testn = function testn (bit) {
    assert(typeof bit === 'number' && bit >= 0);
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) return false;

    // Check bit and return
    var w = this.words[s];

    return !!(w & q);
  };

  // Return only lowers bits of number (in-place)
  BN.prototype.imaskn = function imaskn (bits) {
    assert(typeof bits === 'number' && bits >= 0);
    var r = bits % 26;
    var s = (bits - r) / 26;

    assert(this.negative === 0, 'imaskn works only with positive numbers');

    if (this.length <= s) {
      return this;
    }

    if (r !== 0) {
      s++;
    }
    this.length = Math.min(s, this.length);

    if (r !== 0) {
      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
      this.words[this.length - 1] &= mask;
    }

    return this.strip();
  };

  // Return only lowers bits of number
  BN.prototype.maskn = function maskn (bits) {
    return this.clone().imaskn(bits);
  };

  // Add plain number `num` to `this`
  BN.prototype.iaddn = function iaddn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.isubn(-num);

    // Possible sign change
    if (this.negative !== 0) {
      if (this.length === 1 && (this.words[0] | 0) < num) {
        this.words[0] = num - (this.words[0] | 0);
        this.negative = 0;
        return this;
      }

      this.negative = 0;
      this.isubn(num);
      this.negative = 1;
      return this;
    }

    // Add without checks
    return this._iaddn(num);
  };

  BN.prototype._iaddn = function _iaddn (num) {
    this.words[0] += num;

    // Carry
    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
      this.words[i] -= 0x4000000;
      if (i === this.length - 1) {
        this.words[i + 1] = 1;
      } else {
        this.words[i + 1]++;
      }
    }
    this.length = Math.max(this.length, i + 1);

    return this;
  };

  // Subtract plain number `num` from `this`
  BN.prototype.isubn = function isubn (num) {
    assert(typeof num === 'number');
    assert(num < 0x4000000);
    if (num < 0) return this.iaddn(-num);

    if (this.negative !== 0) {
      this.negative = 0;
      this.iaddn(num);
      this.negative = 1;
      return this;
    }

    this.words[0] -= num;

    if (this.length === 1 && this.words[0] < 0) {
      this.words[0] = -this.words[0];
      this.negative = 1;
    } else {
      // Carry
      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
        this.words[i] += 0x4000000;
        this.words[i + 1] -= 1;
      }
    }

    return this.strip();
  };

  BN.prototype.addn = function addn (num) {
    return this.clone().iaddn(num);
  };

  BN.prototype.subn = function subn (num) {
    return this.clone().isubn(num);
  };

  BN.prototype.iabs = function iabs () {
    this.negative = 0;

    return this;
  };

  BN.prototype.abs = function abs () {
    return this.clone().iabs();
  };

  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
    var len = num.length + shift;
    var i;

    this._expand(len);

    var w;
    var carry = 0;
    for (i = 0; i < num.length; i++) {
      w = (this.words[i + shift] | 0) + carry;
      var right = (num.words[i] | 0) * mul;
      w -= right & 0x3ffffff;
      carry = (w >> 26) - ((right / 0x4000000) | 0);
      this.words[i + shift] = w & 0x3ffffff;
    }
    for (; i < this.length - shift; i++) {
      w = (this.words[i + shift] | 0) + carry;
      carry = w >> 26;
      this.words[i + shift] = w & 0x3ffffff;
    }

    if (carry === 0) return this.strip();

    // Subtraction overflow
    assert(carry === -1);
    carry = 0;
    for (i = 0; i < this.length; i++) {
      w = -(this.words[i] | 0) + carry;
      carry = w >> 26;
      this.words[i] = w & 0x3ffffff;
    }
    this.negative = 1;

    return this.strip();
  };

  BN.prototype._wordDiv = function _wordDiv (num, mode) {
    var shift = this.length - num.length;

    var a = this.clone();
    var b = num;

    // Normalize
    var bhi = b.words[b.length - 1] | 0;
    var bhiBits = this._countBits(bhi);
    shift = 26 - bhiBits;
    if (shift !== 0) {
      b = b.ushln(shift);
      a.iushln(shift);
      bhi = b.words[b.length - 1] | 0;
    }

    // Initialize quotient
    var m = a.length - b.length;
    var q;

    if (mode !== 'mod') {
      q = new BN(null);
      q.length = m + 1;
      q.words = new Array(q.length);
      for (var i = 0; i < q.length; i++) {
        q.words[i] = 0;
      }
    }

    var diff = a.clone()._ishlnsubmul(b, 1, m);
    if (diff.negative === 0) {
      a = diff;
      if (q) {
        q.words[m] = 1;
      }
    }

    for (var j = m - 1; j >= 0; j--) {
      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
        (a.words[b.length + j - 1] | 0);

      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
      // (0x7ffffff)
      qj = Math.min((qj / bhi) | 0, 0x3ffffff);

      a._ishlnsubmul(b, qj, j);
      while (a.negative !== 0) {
        qj--;
        a.negative = 0;
        a._ishlnsubmul(b, 1, j);
        if (!a.isZero()) {
          a.negative ^= 1;
        }
      }
      if (q) {
        q.words[j] = qj;
      }
    }
    if (q) {
      q.strip();
    }
    a.strip();

    // Denormalize
    if (mode !== 'div' && shift !== 0) {
      a.iushrn(shift);
    }

    return {
      div: q || null,
      mod: a
    };
  };

  // NOTE: 1) `mode` can be set to `mod` to request mod only,
  //       to `div` to request div only, or be absent to
  //       request both div & mod
  //       2) `positive` is true if unsigned mod is requested
  BN.prototype.divmod = function divmod (num, mode, positive) {
    assert(!num.isZero());

    if (this.isZero()) {
      return {
        div: new BN(0),
        mod: new BN(0)
      };
    }

    var div, mod, res;
    if (this.negative !== 0 && num.negative === 0) {
      res = this.neg().divmod(num, mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.iadd(num);
        }
      }

      return {
        div: div,
        mod: mod
      };
    }

    if (this.negative === 0 && num.negative !== 0) {
      res = this.divmod(num.neg(), mode);

      if (mode !== 'mod') {
        div = res.div.neg();
      }

      return {
        div: div,
        mod: res.mod
      };
    }

    if ((this.negative & num.negative) !== 0) {
      res = this.neg().divmod(num.neg(), mode);

      if (mode !== 'div') {
        mod = res.mod.neg();
        if (positive && mod.negative !== 0) {
          mod.isub(num);
        }
      }

      return {
        div: res.div,
        mod: mod
      };
    }

    // Both numbers are positive at this point

    // Strip both numbers to approximate shift value
    if (num.length > this.length || this.cmp(num) < 0) {
      return {
        div: new BN(0),
        mod: this
      };
    }

    // Very short reduction
    if (num.length === 1) {
      if (mode === 'div') {
        return {
          div: this.divn(num.words[0]),
          mod: null
        };
      }

      if (mode === 'mod') {
        return {
          div: null,
          mod: new BN(this.modn(num.words[0]))
        };
      }

      return {
        div: this.divn(num.words[0]),
        mod: new BN(this.modn(num.words[0]))
      };
    }

    return this._wordDiv(num, mode);
  };

  // Find `this` / `num`
  BN.prototype.div = function div (num) {
    return this.divmod(num, 'div', false).div;
  };

  // Find `this` % `num`
  BN.prototype.mod = function mod (num) {
    return this.divmod(num, 'mod', false).mod;
  };

  BN.prototype.umod = function umod (num) {
    return this.divmod(num, 'mod', true).mod;
  };

  // Find Round(`this` / `num`)
  BN.prototype.divRound = function divRound (num) {
    var dm = this.divmod(num);

    // Fast case - exact division
    if (dm.mod.isZero()) return dm.div;

    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;

    var half = num.ushrn(1);
    var r2 = num.andln(1);
    var cmp = mod.cmp(half);

    // Round down
    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;

    // Round up
    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
  };

  BN.prototype.modn = function modn (num) {
    assert(num <= 0x3ffffff);
    var p = (1 << 26) % num;

    var acc = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      acc = (p * acc + (this.words[i] | 0)) % num;
    }

    return acc;
  };

  // In-place division by number
  BN.prototype.idivn = function idivn (num) {
    assert(num <= 0x3ffffff);

    var carry = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var w = (this.words[i] | 0) + carry * 0x4000000;
      this.words[i] = (w / num) | 0;
      carry = w % num;
    }

    return this.strip();
  };

  BN.prototype.divn = function divn (num) {
    return this.clone().idivn(num);
  };

  BN.prototype.egcd = function egcd (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var x = this;
    var y = p.clone();

    if (x.negative !== 0) {
      x = x.umod(p);
    } else {
      x = x.clone();
    }

    // A * x + B * y = x
    var A = new BN(1);
    var B = new BN(0);

    // C * x + D * y = y
    var C = new BN(0);
    var D = new BN(1);

    var g = 0;

    while (x.isEven() && y.isEven()) {
      x.iushrn(1);
      y.iushrn(1);
      ++g;
    }

    var yp = y.clone();
    var xp = x.clone();

    while (!x.isZero()) {
      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        x.iushrn(i);
        while (i-- > 0) {
          if (A.isOdd() || B.isOdd()) {
            A.iadd(yp);
            B.isub(xp);
          }

          A.iushrn(1);
          B.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        y.iushrn(j);
        while (j-- > 0) {
          if (C.isOdd() || D.isOdd()) {
            C.iadd(yp);
            D.isub(xp);
          }

          C.iushrn(1);
          D.iushrn(1);
        }
      }

      if (x.cmp(y) >= 0) {
        x.isub(y);
        A.isub(C);
        B.isub(D);
      } else {
        y.isub(x);
        C.isub(A);
        D.isub(B);
      }
    }

    return {
      a: C,
      b: D,
      gcd: y.iushln(g)
    };
  };

  // This is reduced incarnation of the binary EEA
  // above, designated to invert members of the
  // _prime_ fields F(p) at a maximal speed
  BN.prototype._invmp = function _invmp (p) {
    assert(p.negative === 0);
    assert(!p.isZero());

    var a = this;
    var b = p.clone();

    if (a.negative !== 0) {
      a = a.umod(p);
    } else {
      a = a.clone();
    }

    var x1 = new BN(1);
    var x2 = new BN(0);

    var delta = b.clone();

    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
      if (i > 0) {
        a.iushrn(i);
        while (i-- > 0) {
          if (x1.isOdd()) {
            x1.iadd(delta);
          }

          x1.iushrn(1);
        }
      }

      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
      if (j > 0) {
        b.iushrn(j);
        while (j-- > 0) {
          if (x2.isOdd()) {
            x2.iadd(delta);
          }

          x2.iushrn(1);
        }
      }

      if (a.cmp(b) >= 0) {
        a.isub(b);
        x1.isub(x2);
      } else {
        b.isub(a);
        x2.isub(x1);
      }
    }

    var res;
    if (a.cmpn(1) === 0) {
      res = x1;
    } else {
      res = x2;
    }

    if (res.cmpn(0) < 0) {
      res.iadd(p);
    }

    return res;
  };

  BN.prototype.gcd = function gcd (num) {
    if (this.isZero()) return num.abs();
    if (num.isZero()) return this.abs();

    var a = this.clone();
    var b = num.clone();
    a.negative = 0;
    b.negative = 0;

    // Remove common factor of two
    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
      a.iushrn(1);
      b.iushrn(1);
    }

    do {
      while (a.isEven()) {
        a.iushrn(1);
      }
      while (b.isEven()) {
        b.iushrn(1);
      }

      var r = a.cmp(b);
      if (r < 0) {
        // Swap `a` and `b` to make `a` always bigger than `b`
        var t = a;
        a = b;
        b = t;
      } else if (r === 0 || b.cmpn(1) === 0) {
        break;
      }

      a.isub(b);
    } while (true);

    return b.iushln(shift);
  };

  // Invert number in the field F(num)
  BN.prototype.invm = function invm (num) {
    return this.egcd(num).a.umod(num);
  };

  BN.prototype.isEven = function isEven () {
    return (this.words[0] & 1) === 0;
  };

  BN.prototype.isOdd = function isOdd () {
    return (this.words[0] & 1) === 1;
  };

  // And first word and num
  BN.prototype.andln = function andln (num) {
    return this.words[0] & num;
  };

  // Increment at the bit position in-line
  BN.prototype.bincn = function bincn (bit) {
    assert(typeof bit === 'number');
    var r = bit % 26;
    var s = (bit - r) / 26;
    var q = 1 << r;

    // Fast case: bit is much higher than all existing words
    if (this.length <= s) {
      this._expand(s + 1);
      this.words[s] |= q;
      return this;
    }

    // Add bit and propagate, if needed
    var carry = q;
    for (var i = s; carry !== 0 && i < this.length; i++) {
      var w = this.words[i] | 0;
      w += carry;
      carry = w >>> 26;
      w &= 0x3ffffff;
      this.words[i] = w;
    }
    if (carry !== 0) {
      this.words[i] = carry;
      this.length++;
    }
    return this;
  };

  BN.prototype.isZero = function isZero () {
    return this.length === 1 && this.words[0] === 0;
  };

  BN.prototype.cmpn = function cmpn (num) {
    var negative = num < 0;

    if (this.negative !== 0 && !negative) return -1;
    if (this.negative === 0 && negative) return 1;

    this.strip();

    var res;
    if (this.length > 1) {
      res = 1;
    } else {
      if (negative) {
        num = -num;
      }

      assert(num <= 0x3ffffff, 'Number is too big');

      var w = this.words[0] | 0;
      res = w === num ? 0 : w < num ? -1 : 1;
    }
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Compare two numbers and return:
  // 1 - if `this` > `num`
  // 0 - if `this` == `num`
  // -1 - if `this` < `num`
  BN.prototype.cmp = function cmp (num) {
    if (this.negative !== 0 && num.negative === 0) return -1;
    if (this.negative === 0 && num.negative !== 0) return 1;

    var res = this.ucmp(num);
    if (this.negative !== 0) return -res | 0;
    return res;
  };

  // Unsigned comparison
  BN.prototype.ucmp = function ucmp (num) {
    // At this point both numbers have the same sign
    if (this.length > num.length) return 1;
    if (this.length < num.length) return -1;

    var res = 0;
    for (var i = this.length - 1; i >= 0; i--) {
      var a = this.words[i] | 0;
      var b = num.words[i] | 0;

      if (a === b) continue;
      if (a < b) {
        res = -1;
      } else if (a > b) {
        res = 1;
      }
      break;
    }
    return res;
  };

  BN.prototype.gtn = function gtn (num) {
    return this.cmpn(num) === 1;
  };

  BN.prototype.gt = function gt (num) {
    return this.cmp(num) === 1;
  };

  BN.prototype.gten = function gten (num) {
    return this.cmpn(num) >= 0;
  };

  BN.prototype.gte = function gte (num) {
    return this.cmp(num) >= 0;
  };

  BN.prototype.ltn = function ltn (num) {
    return this.cmpn(num) === -1;
  };

  BN.prototype.lt = function lt (num) {
    return this.cmp(num) === -1;
  };

  BN.prototype.lten = function lten (num) {
    return this.cmpn(num) <= 0;
  };

  BN.prototype.lte = function lte (num) {
    return this.cmp(num) <= 0;
  };

  BN.prototype.eqn = function eqn (num) {
    return this.cmpn(num) === 0;
  };

  BN.prototype.eq = function eq (num) {
    return this.cmp(num) === 0;
  };

  //
  // A reduce context, could be using montgomery or something better, depending
  // on the `m` itself.
  //
  BN.red = function red (num) {
    return new Red(num);
  };

  BN.prototype.toRed = function toRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    assert(this.negative === 0, 'red works only with positives');
    return ctx.convertTo(this)._forceRed(ctx);
  };

  BN.prototype.fromRed = function fromRed () {
    assert(this.red, 'fromRed works only with numbers in reduction context');
    return this.red.convertFrom(this);
  };

  BN.prototype._forceRed = function _forceRed (ctx) {
    this.red = ctx;
    return this;
  };

  BN.prototype.forceRed = function forceRed (ctx) {
    assert(!this.red, 'Already a number in reduction context');
    return this._forceRed(ctx);
  };

  BN.prototype.redAdd = function redAdd (num) {
    assert(this.red, 'redAdd works only with red numbers');
    return this.red.add(this, num);
  };

  BN.prototype.redIAdd = function redIAdd (num) {
    assert(this.red, 'redIAdd works only with red numbers');
    return this.red.iadd(this, num);
  };

  BN.prototype.redSub = function redSub (num) {
    assert(this.red, 'redSub works only with red numbers');
    return this.red.sub(this, num);
  };

  BN.prototype.redISub = function redISub (num) {
    assert(this.red, 'redISub works only with red numbers');
    return this.red.isub(this, num);
  };

  BN.prototype.redShl = function redShl (num) {
    assert(this.red, 'redShl works only with red numbers');
    return this.red.shl(this, num);
  };

  BN.prototype.redMul = function redMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.mul(this, num);
  };

  BN.prototype.redIMul = function redIMul (num) {
    assert(this.red, 'redMul works only with red numbers');
    this.red._verify2(this, num);
    return this.red.imul(this, num);
  };

  BN.prototype.redSqr = function redSqr () {
    assert(this.red, 'redSqr works only with red numbers');
    this.red._verify1(this);
    return this.red.sqr(this);
  };

  BN.prototype.redISqr = function redISqr () {
    assert(this.red, 'redISqr works only with red numbers');
    this.red._verify1(this);
    return this.red.isqr(this);
  };

  // Square root over p
  BN.prototype.redSqrt = function redSqrt () {
    assert(this.red, 'redSqrt works only with red numbers');
    this.red._verify1(this);
    return this.red.sqrt(this);
  };

  BN.prototype.redInvm = function redInvm () {
    assert(this.red, 'redInvm works only with red numbers');
    this.red._verify1(this);
    return this.red.invm(this);
  };

  // Return negative clone of `this` % `red modulo`
  BN.prototype.redNeg = function redNeg () {
    assert(this.red, 'redNeg works only with red numbers');
    this.red._verify1(this);
    return this.red.neg(this);
  };

  BN.prototype.redPow = function redPow (num) {
    assert(this.red && !num.red, 'redPow(normalNum)');
    this.red._verify1(this);
    return this.red.pow(this, num);
  };

  // Prime numbers with efficient reduction
  var primes = {
    k256: null,
    p224: null,
    p192: null,
    p25519: null
  };

  // Pseudo-Mersenne prime
  function MPrime (name, p) {
    // P = 2 ^ N - K
    this.name = name;
    this.p = new BN(p, 16);
    this.n = this.p.bitLength();
    this.k = new BN(1).iushln(this.n).isub(this.p);

    this.tmp = this._tmp();
  }

  MPrime.prototype._tmp = function _tmp () {
    var tmp = new BN(null);
    tmp.words = new Array(Math.ceil(this.n / 13));
    return tmp;
  };

  MPrime.prototype.ireduce = function ireduce (num) {
    // Assumes that `num` is less than `P^2`
    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
    var r = num;
    var rlen;

    do {
      this.split(r, this.tmp);
      r = this.imulK(r);
      r = r.iadd(this.tmp);
      rlen = r.bitLength();
    } while (rlen > this.n);

    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
    if (cmp === 0) {
      r.words[0] = 0;
      r.length = 1;
    } else if (cmp > 0) {
      r.isub(this.p);
    } else {
      r.strip();
    }

    return r;
  };

  MPrime.prototype.split = function split (input, out) {
    input.iushrn(this.n, 0, out);
  };

  MPrime.prototype.imulK = function imulK (num) {
    return num.imul(this.k);
  };

  function K256 () {
    MPrime.call(
      this,
      'k256',
      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
  }
  inherits(K256, MPrime);

  K256.prototype.split = function split (input, output) {
    // 256 = 9 * 26 + 22
    var mask = 0x3fffff;

    var outLen = Math.min(input.length, 9);
    for (var i = 0; i < outLen; i++) {
      output.words[i] = input.words[i];
    }
    output.length = outLen;

    if (input.length <= 9) {
      input.words[0] = 0;
      input.length = 1;
      return;
    }

    // Shift by 9 limbs
    var prev = input.words[9];
    output.words[output.length++] = prev & mask;

    for (i = 10; i < input.length; i++) {
      var next = input.words[i] | 0;
      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
      prev = next;
    }
    prev >>>= 22;
    input.words[i - 10] = prev;
    if (prev === 0 && input.length > 10) {
      input.length -= 10;
    } else {
      input.length -= 9;
    }
  };

  K256.prototype.imulK = function imulK (num) {
    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
    num.words[num.length] = 0;
    num.words[num.length + 1] = 0;
    num.length += 2;

    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
    var lo = 0;
    for (var i = 0; i < num.length; i++) {
      var w = num.words[i] | 0;
      lo += w * 0x3d1;
      num.words[i] = lo & 0x3ffffff;
      lo = w * 0x40 + ((lo / 0x4000000) | 0);
    }

    // Fast length reduction
    if (num.words[num.length - 1] === 0) {
      num.length--;
      if (num.words[num.length - 1] === 0) {
        num.length--;
      }
    }
    return num;
  };

  function P224 () {
    MPrime.call(
      this,
      'p224',
      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
  }
  inherits(P224, MPrime);

  function P192 () {
    MPrime.call(
      this,
      'p192',
      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
  }
  inherits(P192, MPrime);

  function P25519 () {
    // 2 ^ 255 - 19
    MPrime.call(
      this,
      '25519',
      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
  }
  inherits(P25519, MPrime);

  P25519.prototype.imulK = function imulK (num) {
    // K = 0x13
    var carry = 0;
    for (var i = 0; i < num.length; i++) {
      var hi = (num.words[i] | 0) * 0x13 + carry;
      var lo = hi & 0x3ffffff;
      hi >>>= 26;

      num.words[i] = lo;
      carry = hi;
    }
    if (carry !== 0) {
      num.words[num.length++] = carry;
    }
    return num;
  };

  // Exported mostly for testing purposes, use plain name instead
  BN._prime = function prime (name) {
    // Cached version of prime
    if (primes[name]) return primes[name];

    var prime;
    if (name === 'k256') {
      prime = new K256();
    } else if (name === 'p224') {
      prime = new P224();
    } else if (name === 'p192') {
      prime = new P192();
    } else if (name === 'p25519') {
      prime = new P25519();
    } else {
      throw new Error('Unknown prime ' + name);
    }
    primes[name] = prime;

    return prime;
  };

  //
  // Base reduction engine
  //
  function Red (m) {
    if (typeof m === 'string') {
      var prime = BN._prime(m);
      this.m = prime.p;
      this.prime = prime;
    } else {
      assert(m.gtn(1), 'modulus must be greater than 1');
      this.m = m;
      this.prime = null;
    }
  }

  Red.prototype._verify1 = function _verify1 (a) {
    assert(a.negative === 0, 'red works only with positives');
    assert(a.red, 'red works only with red numbers');
  };

  Red.prototype._verify2 = function _verify2 (a, b) {
    assert((a.negative | b.negative) === 0, 'red works only with positives');
    assert(a.red && a.red === b.red,
      'red works only with red numbers');
  };

  Red.prototype.imod = function imod (a) {
    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
    return a.umod(this.m)._forceRed(this);
  };

  Red.prototype.neg = function neg (a) {
    if (a.isZero()) {
      return a.clone();
    }

    return this.m.sub(a)._forceRed(this);
  };

  Red.prototype.add = function add (a, b) {
    this._verify2(a, b);

    var res = a.add(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.iadd = function iadd (a, b) {
    this._verify2(a, b);

    var res = a.iadd(b);
    if (res.cmp(this.m) >= 0) {
      res.isub(this.m);
    }
    return res;
  };

  Red.prototype.sub = function sub (a, b) {
    this._verify2(a, b);

    var res = a.sub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res._forceRed(this);
  };

  Red.prototype.isub = function isub (a, b) {
    this._verify2(a, b);

    var res = a.isub(b);
    if (res.cmpn(0) < 0) {
      res.iadd(this.m);
    }
    return res;
  };

  Red.prototype.shl = function shl (a, num) {
    this._verify1(a);
    return this.imod(a.ushln(num));
  };

  Red.prototype.imul = function imul (a, b) {
    this._verify2(a, b);
    return this.imod(a.imul(b));
  };

  Red.prototype.mul = function mul (a, b) {
    this._verify2(a, b);
    return this.imod(a.mul(b));
  };

  Red.prototype.isqr = function isqr (a) {
    return this.imul(a, a.clone());
  };

  Red.prototype.sqr = function sqr (a) {
    return this.mul(a, a);
  };

  Red.prototype.sqrt = function sqrt (a) {
    if (a.isZero()) return a.clone();

    var mod3 = this.m.andln(3);
    assert(mod3 % 2 === 1);

    // Fast case
    if (mod3 === 3) {
      var pow = this.m.add(new BN(1)).iushrn(2);
      return this.pow(a, pow);
    }

    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
    //
    // Find Q and S, that Q * 2 ^ S = (P - 1)
    var q = this.m.subn(1);
    var s = 0;
    while (!q.isZero() && q.andln(1) === 0) {
      s++;
      q.iushrn(1);
    }
    assert(!q.isZero());

    var one = new BN(1).toRed(this);
    var nOne = one.redNeg();

    // Find quadratic non-residue
    // NOTE: Max is such because of generalized Riemann hypothesis.
    var lpow = this.m.subn(1).iushrn(1);
    var z = this.m.bitLength();
    z = new BN(2 * z * z).toRed(this);

    while (this.pow(z, lpow).cmp(nOne) !== 0) {
      z.redIAdd(nOne);
    }

    var c = this.pow(z, q);
    var r = this.pow(a, q.addn(1).iushrn(1));
    var t = this.pow(a, q);
    var m = s;
    while (t.cmp(one) !== 0) {
      var tmp = t;
      for (var i = 0; tmp.cmp(one) !== 0; i++) {
        tmp = tmp.redSqr();
      }
      assert(i < m);
      var b = this.pow(c, new BN(1).iushln(m - i - 1));

      r = r.redMul(b);
      c = b.redSqr();
      t = t.redMul(c);
      m = i;
    }

    return r;
  };

  Red.prototype.invm = function invm (a) {
    var inv = a._invmp(this.m);
    if (inv.negative !== 0) {
      inv.negative = 0;
      return this.imod(inv).redNeg();
    } else {
      return this.imod(inv);
    }
  };

  Red.prototype.pow = function pow (a, num) {
    if (num.isZero()) return new BN(1);
    if (num.cmpn(1) === 0) return a.clone();

    var windowSize = 4;
    var wnd = new Array(1 << windowSize);
    wnd[0] = new BN(1).toRed(this);
    wnd[1] = a;
    for (var i = 2; i < wnd.length; i++) {
      wnd[i] = this.mul(wnd[i - 1], a);
    }

    var res = wnd[0];
    var current = 0;
    var currentLen = 0;
    var start = num.bitLength() % 26;
    if (start === 0) {
      start = 26;
    }

    for (i = num.length - 1; i >= 0; i--) {
      var word = num.words[i];
      for (var j = start - 1; j >= 0; j--) {
        var bit = (word >> j) & 1;
        if (res !== wnd[0]) {
          res = this.sqr(res);
        }

        if (bit === 0 && current === 0) {
          currentLen = 0;
          continue;
        }

        current <<= 1;
        current |= bit;
        currentLen++;
        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;

        res = this.mul(res, wnd[current]);
        currentLen = 0;
        current = 0;
      }
      start = 26;
    }

    return res;
  };

  Red.prototype.convertTo = function convertTo (num) {
    var r = num.umod(this.m);

    return r === num ? r.clone() : r;
  };

  Red.prototype.convertFrom = function convertFrom (num) {
    var res = num.clone();
    res.red = null;
    return res;
  };

  //
  // Montgomery method engine
  //

  BN.mont = function mont (num) {
    return new Mont(num);
  };

  function Mont (m) {
    Red.call(this, m);

    this.shift = this.m.bitLength();
    if (this.shift % 26 !== 0) {
      this.shift += 26 - (this.shift % 26);
    }

    this.r = new BN(1).iushln(this.shift);
    this.r2 = this.imod(this.r.sqr());
    this.rinv = this.r._invmp(this.m);

    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
    this.minv = this.minv.umod(this.r);
    this.minv = this.r.sub(this.minv);
  }
  inherits(Mont, Red);

  Mont.prototype.convertTo = function convertTo (num) {
    return this.imod(num.ushln(this.shift));
  };

  Mont.prototype.convertFrom = function convertFrom (num) {
    var r = this.imod(num.mul(this.rinv));
    r.red = null;
    return r;
  };

  Mont.prototype.imul = function imul (a, b) {
    if (a.isZero() || b.isZero()) {
      a.words[0] = 0;
      a.length = 1;
      return a;
    }

    var t = a.imul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;

    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.mul = function mul (a, b) {
    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);

    var t = a.mul(b);
    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
    var u = t.isub(c).iushrn(this.shift);
    var res = u;
    if (u.cmp(this.m) >= 0) {
      res = u.isub(this.m);
    } else if (u.cmpn(0) < 0) {
      res = u.iadd(this.m);
    }

    return res._forceRed(this);
  };

  Mont.prototype.invm = function invm (a) {
    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
    var res = this.imod(a._invmp(this.m).mul(this.r2));
    return res._forceRed(this);
  };
})(typeof module === 'undefined' || module, this);

},{}],35:[function(require,module,exports){
'use strict'

module.exports = boundary

function boundary (cells) {
  var i, j, k
  var n = cells.length
  var sz = 0
  for (i = 0; i < n; ++i) {
    sz += cells[i].length
  }
  var result = new Array(sz)
  var ptr = 0
  for (i = 0; i < n; ++i) {
    var c = cells[i]
    var d = c.length
    for (j = 0; j < d; ++j) {
      var b = result[ptr++] = new Array(d - 1)
      var p = 0
      for (k = 0; k < d; ++k) {
        if (k === j) {
          continue
        }
        b[p++] = c[k]
      }
      if (j & 1) {
        var tmp = b[1]
        b[1] = b[0]
        b[0] = tmp
      }
    }
  }
  return result
}

},{}],36:[function(require,module,exports){
'use strict'

module.exports = boxIntersectWrapper

var pool = require('typedarray-pool')
var sweep = require('./lib/sweep')
var boxIntersectIter = require('./lib/intersect')

function boxEmpty(d, box) {
  for(var j=0; j<d; ++j) {
    if(!(box[j] <= box[j+d])) {
      return true
    }
  }
  return false
}

//Unpack boxes into a flat typed array, remove empty boxes
function convertBoxes(boxes, d, data, ids) {
  var ptr = 0
  var count = 0
  for(var i=0, n=boxes.length; i<n; ++i) {
    var b = boxes[i]
    if(boxEmpty(d, b)) {
      continue
    }
    for(var j=0; j<2*d; ++j) {
      data[ptr++] = b[j]
    }
    ids[count++] = i
  }
  return count
}

//Perform type conversions, check bounds
function boxIntersect(red, blue, visit, full) {
  var n = red.length
  var m = blue.length

  //If either array is empty, then we can skip this whole thing
  if(n <= 0 || m <= 0) {
    return
  }

  //Compute dimension, if it is 0 then we skip
  var d = (red[0].length)>>>1
  if(d <= 0) {
    return
  }

  var retval

  //Convert red boxes
  var redList  = pool.mallocDouble(2*d*n)
  var redIds   = pool.mallocInt32(n)
  n = convertBoxes(red, d, redList, redIds)

  if(n > 0) {
    if(d === 1 && full) {
      //Special case: 1d complete
      sweep.init(n)
      retval = sweep.sweepComplete(
        d, visit, 
        0, n, redList, redIds,
        0, n, redList, redIds)
    } else {

      //Convert blue boxes
      var blueList = pool.mallocDouble(2*d*m)
      var blueIds  = pool.mallocInt32(m)
      m = convertBoxes(blue, d, blueList, blueIds)

      if(m > 0) {
        sweep.init(n+m)

        if(d === 1) {
          //Special case: 1d bipartite
          retval = sweep.sweepBipartite(
            d, visit, 
            0, n, redList,  redIds,
            0, m, blueList, blueIds)
        } else {
          //General case:  d>1
          retval = boxIntersectIter(
            d, visit,    full,
            n, redList,  redIds,
            m, blueList, blueIds)
        }

        pool.free(blueList)
        pool.free(blueIds)
      }
    }

    pool.free(redList)
    pool.free(redIds)
  }

  return retval
}


var RESULT

function appendItem(i,j) {
  RESULT.push([i,j])
}

function intersectFullArray(x) {
  RESULT = []
  boxIntersect(x, x, appendItem, true)
  return RESULT
}

function intersectBipartiteArray(x, y) {
  RESULT = []
  boxIntersect(x, y, appendItem, false)
  return RESULT
}

//User-friendly wrapper, handle full input and no-visitor cases
function boxIntersectWrapper(arg0, arg1, arg2) {
  var result
  switch(arguments.length) {
    case 1:
      return intersectFullArray(arg0)
    case 2:
      if(typeof arg1 === 'function') {
        return boxIntersect(arg0, arg0, arg1, true)
      } else {
        return intersectBipartiteArray(arg0, arg1)
      }
    case 3:
      return boxIntersect(arg0, arg1, arg2, false)
    default:
      throw new Error('box-intersect: Invalid arguments')
  }
}
},{"./lib/intersect":38,"./lib/sweep":42,"typedarray-pool":992}],37:[function(require,module,exports){
'use strict'

var DIMENSION   = 'd'
var AXIS        = 'ax'
var VISIT       = 'vv'
var FLIP        = 'fp'

var ELEM_SIZE   = 'es'

var RED_START   = 'rs'
var RED_END     = 're'
var RED_BOXES   = 'rb'
var RED_INDEX   = 'ri'
var RED_PTR     = 'rp'

var BLUE_START  = 'bs'
var BLUE_END    = 'be'
var BLUE_BOXES  = 'bb'
var BLUE_INDEX  = 'bi'
var BLUE_PTR    = 'bp'

var RETVAL      = 'rv'

var INNER_LABEL = 'Q'

var ARGS = [
  DIMENSION,
  AXIS,
  VISIT,
  RED_START,
  RED_END,
  RED_BOXES,
  RED_INDEX,
  BLUE_START,
  BLUE_END,
  BLUE_BOXES,
  BLUE_INDEX
]

function generateBruteForce(redMajor, flip, full) {
  var funcName = 'bruteForce' + 
    (redMajor ? 'Red' : 'Blue') + 
    (flip ? 'Flip' : '') +
    (full ? 'Full' : '')

  var code = ['function ', funcName, '(', ARGS.join(), '){',
    'var ', ELEM_SIZE, '=2*', DIMENSION, ';']

  var redLoop = 
    'for(var i=' + RED_START + ',' + RED_PTR + '=' + ELEM_SIZE + '*' + RED_START + ';' +
        'i<' + RED_END +';' +
        '++i,' + RED_PTR + '+=' + ELEM_SIZE + '){' +
        'var x0=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '],' +
            'x1=' + RED_BOXES + '[' + AXIS + '+' + RED_PTR + '+' + DIMENSION + '],' +
            'xi=' + RED_INDEX + '[i];'

  var blueLoop = 
    'for(var j=' + BLUE_START + ',' + BLUE_PTR + '=' + ELEM_SIZE + '*' + BLUE_START + ';' +
        'j<' + BLUE_END + ';' +
        '++j,' + BLUE_PTR + '+=' + ELEM_SIZE + '){' +
        'var y0=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '],' +
            (full ? 'y1=' + BLUE_BOXES + '[' + AXIS + '+' + BLUE_PTR + '+' + DIMENSION + '],' : '') +
            'yi=' + BLUE_INDEX + '[j];'

  if(redMajor) {
    code.push(redLoop, INNER_LABEL, ':', blueLoop)
  } else {
    code.push(blueLoop, INNER_LABEL, ':', redLoop)
  }

  if(full) {
    code.push('if(y1<x0||x1<y0)continue;')
  } else if(flip) {
    code.push('if(y0<=x0||x1<y0)continue;')
  } else {
    code.push('if(y0<x0||x1<y0)continue;')
  }

  code.push('for(var k='+AXIS+'+1;k<'+DIMENSION+';++k){'+
    'var r0='+RED_BOXES+'[k+'+RED_PTR+'],'+
        'r1='+RED_BOXES+'[k+'+DIMENSION+'+'+RED_PTR+'],'+
        'b0='+BLUE_BOXES+'[k+'+BLUE_PTR+'],'+
        'b1='+BLUE_BOXES+'[k+'+DIMENSION+'+'+BLUE_PTR+'];'+
      'if(r1<b0||b1<r0)continue ' + INNER_LABEL + ';}' +
      'var ' + RETVAL + '=' + VISIT + '(')

  if(flip) {
    code.push('yi,xi')
  } else {
    code.push('xi,yi')
  }

  code.push(');if(' + RETVAL + '!==void 0)return ' + RETVAL + ';}}}')

  return {
    name: funcName, 
    code: code.join('')
  }
}

function bruteForcePlanner(full) {
  var funcName = 'bruteForce' + (full ? 'Full' : 'Partial')
  var prefix = []
  var fargs = ARGS.slice()
  if(!full) {
    fargs.splice(3, 0, FLIP)
  }

  var code = ['function ' + funcName + '(' + fargs.join() + '){']

  function invoke(redMajor, flip) {
    var res = generateBruteForce(redMajor, flip, full)
    prefix.push(res.code)
    code.push('return ' + res.name + '(' + ARGS.join() + ');')
  }

  code.push('if(' + RED_END + '-' + RED_START + '>' +
                    BLUE_END + '-' + BLUE_START + '){')

  if(full) {
    invoke(true, false)
    code.push('}else{')
    invoke(false, false)
  } else {
    code.push('if(' + FLIP + '){')
    invoke(true, true)
    code.push('}else{')
    invoke(true, false)
    code.push('}}else{if(' + FLIP + '){')
    invoke(false, true)
    code.push('}else{')
    invoke(false, false)
    code.push('}')
  }
  code.push('}}return ' + funcName)

  var codeStr = prefix.join('') + code.join('')
  var proc = new Function(codeStr)
  return proc()
}


exports.partial = bruteForcePlanner(false)
exports.full    = bruteForcePlanner(true)
},{}],38:[function(require,module,exports){
'use strict'

module.exports = boxIntersectIter

var pool = require('typedarray-pool')
var bits = require('bit-twiddle')
var bruteForce = require('./brute')
var bruteForcePartial = bruteForce.partial
var bruteForceFull = bruteForce.full
var sweep = require('./sweep')
var findMedian = require('./median')
var genPartition = require('./partition')

//Twiddle parameters
var BRUTE_FORCE_CUTOFF    = 128       //Cut off for brute force search
var SCAN_CUTOFF           = (1<<22)   //Cut off for two way scan
var SCAN_COMPLETE_CUTOFF  = (1<<22)  

//Partition functions
var partitionInteriorContainsInterval = genPartition(
  '!(lo>=p0)&&!(p1>=hi)', 
  ['p0', 'p1'])

var partitionStartEqual = genPartition(
  'lo===p0',
  ['p0'])

var partitionStartLessThan = genPartition(
  'lo<p0',
  ['p0'])

var partitionEndLessThanEqual = genPartition(
  'hi<=p0',
  ['p0'])

var partitionContainsPoint = genPartition(
  'lo<=p0&&p0<=hi',
  ['p0'])

var partitionContainsPointProper = genPartition(
  'lo<p0&&p0<=hi',
  ['p0'])

//Frame size for iterative loop
var IFRAME_SIZE = 6
var DFRAME_SIZE = 2

//Data for box statck
var INIT_CAPACITY = 1024
var BOX_ISTACK  = pool.mallocInt32(INIT_CAPACITY)
var BOX_DSTACK  = pool.mallocDouble(INIT_CAPACITY)

//Initialize iterative loop queue
function iterInit(d, count) {
  var levels = (8 * bits.log2(count+1) * (d+1))|0
  var maxInts = bits.nextPow2(IFRAME_SIZE*levels)
  if(BOX_ISTACK.length < maxInts) {
    pool.free(BOX_ISTACK)
    BOX_ISTACK = pool.mallocInt32(maxInts)
  }
  var maxDoubles = bits.nextPow2(DFRAME_SIZE*levels)
  if(BOX_DSTACK < maxDoubles) {
    pool.free(BOX_DSTACK)
    BOX_DSTACK = pool.mallocDouble(maxDoubles)
  }
}

//Append item to queue
function iterPush(ptr,
  axis, 
  redStart, redEnd, 
  blueStart, blueEnd, 
  state, 
  lo, hi) {

  var iptr = IFRAME_SIZE * ptr
  BOX_ISTACK[iptr]   = axis
  BOX_ISTACK[iptr+1] = redStart
  BOX_ISTACK[iptr+2] = redEnd
  BOX_ISTACK[iptr+3] = blueStart
  BOX_ISTACK[iptr+4] = blueEnd
  BOX_ISTACK[iptr+5] = state

  var dptr = DFRAME_SIZE * ptr
  BOX_DSTACK[dptr]   = lo
  BOX_DSTACK[dptr+1] = hi
}

//Special case:  Intersect single point with list of intervals
function onePointPartial(
  d, axis, visit, flip,
  redStart, redEnd, red, redIndex,
  blueOffset, blue, blueId) {

  var elemSize = 2 * d
  var bluePtr  = blueOffset * elemSize
  var blueX    = blue[bluePtr + axis]

red_loop:
  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
    var r0 = red[redPtr+axis]
    var r1 = red[redPtr+axis+d]
    if(blueX < r0 || r1 < blueX) {
      continue
    }
    if(flip && blueX === r0) {
      continue
    }
    var redId = redIndex[i]
    for(var j=axis+1; j<d; ++j) {
      var r0 = red[redPtr+j]
      var r1 = red[redPtr+j+d]
      var b0 = blue[bluePtr+j]
      var b1 = blue[bluePtr+j+d]
      if(r1 < b0 || b1 < r0) {
        continue red_loop
      }
    }
    var retval
    if(flip) {
      retval = visit(blueId, redId)
    } else {
      retval = visit(redId, blueId)
    }
    if(retval !== void 0) {
      return retval
    }
  }
}

//Special case:  Intersect one point with list of intervals
function onePointFull(
  d, axis, visit,
  redStart, redEnd, red, redIndex,
  blueOffset, blue, blueId) {

  var elemSize = 2 * d
  var bluePtr  = blueOffset * elemSize
  var blueX    = blue[bluePtr + axis]

red_loop:
  for(var i=redStart, redPtr=redStart*elemSize; i<redEnd; ++i, redPtr+=elemSize) {
    var redId = redIndex[i]
    if(redId === blueId) {
      continue
    }
    var r0 = red[redPtr+axis]
    var r1 = red[redPtr+axis+d]
    if(blueX < r0 || r1 < blueX) {
      continue
    }
    for(var j=axis+1; j<d; ++j) {
      var r0 = red[redPtr+j]
      var r1 = red[redPtr+j+d]
      var b0 = blue[bluePtr+j]
      var b1 = blue[bluePtr+j+d]
      if(r1 < b0 || b1 < r0) {
        continue red_loop
      }
    }
    var retval = visit(redId, blueId)
    if(retval !== void 0) {
      return retval
    }
  }
}

//The main box intersection routine
function boxIntersectIter(
  d, visit, initFull,
  xSize, xBoxes, xIndex,
  ySize, yBoxes, yIndex) {

  //Reserve memory for stack
  iterInit(d, xSize + ySize)

  var top  = 0
  var elemSize = 2 * d
  var retval

  iterPush(top++,
      0,
      0, xSize,
      0, ySize,
      initFull ? 16 : 0, 
      -Infinity, Infinity)
  if(!initFull) {
    iterPush(top++,
      0,
      0, ySize,
      0, xSize,
      1, 
      -Infinity, Infinity)
  }

  while(top > 0) {
    top  -= 1

    var iptr = top * IFRAME_SIZE
    var axis      = BOX_ISTACK[iptr]
    var redStart  = BOX_ISTACK[iptr+1]
    var redEnd    = BOX_ISTACK[iptr+2]
    var blueStart = BOX_ISTACK[iptr+3]
    var blueEnd   = BOX_ISTACK[iptr+4]
    var state     = BOX_ISTACK[iptr+5]

    var dptr = top * DFRAME_SIZE
    var lo        = BOX_DSTACK[dptr]
    var hi        = BOX_DSTACK[dptr+1]

    //Unpack state info
    var flip      = (state & 1)
    var full      = !!(state & 16)

    //Unpack indices
    var red       = xBoxes
    var redIndex  = xIndex
    var blue      = yBoxes
    var blueIndex = yIndex
    if(flip) {
      red         = yBoxes
      redIndex    = yIndex
      blue        = xBoxes
      blueIndex   = xIndex
    }

    if(state & 2) {
      redEnd = partitionStartLessThan(
        d, axis,
        redStart, redEnd, red, redIndex,
        hi)
      if(redStart >= redEnd) {
        continue
      }
    }
    if(state & 4) {
      redStart = partitionEndLessThanEqual(
        d, axis,
        redStart, redEnd, red, redIndex,
        lo)
      if(redStart >= redEnd) {
        continue
      }
    }
    
    var redCount  = redEnd  - redStart
    var blueCount = blueEnd - blueStart

    if(full) {
      if(d * redCount * (redCount + blueCount) < SCAN_COMPLETE_CUTOFF) {
        retval = sweep.scanComplete(
          d, axis, visit, 
          redStart, redEnd, red, redIndex,
          blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
        continue
      }
    } else {
      if(d * Math.min(redCount, blueCount) < BRUTE_FORCE_CUTOFF) {
        //If input small, then use brute force
        retval = bruteForcePartial(
            d, axis, visit, flip,
            redStart,  redEnd,  red,  redIndex,
            blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
        continue
      } else if(d * redCount * blueCount < SCAN_CUTOFF) {
        //If input medium sized, then use sweep and prune
        retval = sweep.scanBipartite(
          d, axis, visit, flip, 
          redStart, redEnd, red, redIndex,
          blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
        continue
      }
    }
    
    //First, find all red intervals whose interior contains (lo,hi)
    var red0 = partitionInteriorContainsInterval(
      d, axis, 
      redStart, redEnd, red, redIndex,
      lo, hi)

    //Lower dimensional case
    if(redStart < red0) {

      if(d * (red0 - redStart) < BRUTE_FORCE_CUTOFF) {
        //Special case for small inputs: use brute force
        retval = bruteForceFull(
          d, axis+1, visit,
          redStart, red0, red, redIndex,
          blueStart, blueEnd, blue, blueIndex)
        if(retval !== void 0) {
          return retval
        }
      } else if(axis === d-2) {
        if(flip) {
          retval = sweep.sweepBipartite(
            d, visit,
            blueStart, blueEnd, blue, blueIndex,
            redStart, red0, red, redIndex)
        } else {
          retval = sweep.sweepBipartite(
            d, visit,
            redStart, red0, red, redIndex,
            blueStart, blueEnd, blue, blueIndex)
        }
        if(retval !== void 0) {
          return retval
        }
      } else {
        iterPush(top++,
          axis+1,
          redStart, red0,
          blueStart, blueEnd,
          flip,
          -Infinity, Infinity)
        iterPush(top++,
          axis+1,
          blueStart, blueEnd,
          redStart, red0,
          flip^1,
          -Infinity, Infinity)
      }
    }

    //Divide and conquer phase
    if(red0 < redEnd) {

      //Cut blue into 3 parts:
      //
      //  Points < mid point
      //  Points = mid point
      //  Points > mid point
      //
      var blue0 = findMedian(
        d, axis, 
        blueStart, blueEnd, blue, blueIndex)
      var mid = blue[elemSize * blue0 + axis]
      var blue1 = partitionStartEqual(
        d, axis,
        blue0, blueEnd, blue, blueIndex,
        mid)

      //Right case
      if(blue1 < blueEnd) {
        iterPush(top++,
          axis,
          red0, redEnd,
          blue1, blueEnd,
          (flip|4) + (full ? 16 : 0),
          mid, hi)
      }

      //Left case
      if(blueStart < blue0) {
        iterPush(top++,
          axis,
          red0, redEnd,
          blueStart, blue0,
          (flip|2) + (full ? 16 : 0),
          lo, mid)
      }

      //Center case (the hard part)
      if(blue0 + 1 === blue1) {
        //Optimization: Range with exactly 1 point, use a brute force scan
        if(full) {
          retval = onePointFull(
            d, axis, visit,
            red0, redEnd, red, redIndex,
            blue0, blue, blueIndex[blue0])
        } else {
          retval = onePointPartial(
            d, axis, visit, flip,
            red0, redEnd, red, redIndex,
            blue0, blue, blueIndex[blue0])
        }
        if(retval !== void 0) {
          return retval
        }
      } else if(blue0 < blue1) {
        var red1
        if(full) {
          //If full intersection, need to handle special case
          red1 = partitionContainsPoint(
            d, axis,
            red0, redEnd, red, redIndex,
            mid)
          if(red0 < red1) {
            var redX = partitionStartEqual(
              d, axis,
              red0, red1, red, redIndex,
              mid)
            if(axis === d-2) {
              //Degenerate sweep intersection:
              //  [red0, redX] with [blue0, blue1]
              if(red0 < redX) {
                retval = sweep.sweepComplete(
                  d, visit,
                  red0, redX, red, redIndex,
                  blue0, blue1, blue, blueIndex)
                if(retval !== void 0) {
                  return retval
                }
              }

              //Normal sweep intersection:
              //  [redX, red1] with [blue0, blue1]
              if(redX < red1) {
                retval = sweep.sweepBipartite(
                  d, visit,
                  redX, red1, red, redIndex,
                  blue0, blue1, blue, blueIndex)
                if(retval !== void 0) {
                  return retval
                }
              }
            } else {
              if(red0 < redX) {
                iterPush(top++,
                  axis+1,
                  red0, redX,
                  blue0, blue1,
                  16,
                  -Infinity, Infinity)
              }
              if(redX < red1) {
                iterPush(top++,
                  axis+1,
                  redX, red1,
                  blue0, blue1,
                  0,
                  -Infinity, Infinity)
                iterPush(top++,
                  axis+1,
                  blue0, blue1,
                  redX, red1,
                  1,
                  -Infinity, Infinity)
              }
            }
          }
        } else {
          if(flip) {
            red1 = partitionContainsPointProper(
              d, axis,
              red0, redEnd, red, redIndex,
              mid)
          } else {
            red1 = partitionContainsPoint(
              d, axis,
              red0, redEnd, red, redIndex,
              mid)
          }
          if(red0 < red1) {
            if(axis === d-2) {
              if(flip) {
                retval = sweep.sweepBipartite(
                  d, visit,
                  blue0, blue1, blue, blueIndex,
                  red0, red1, red, redIndex)
              } else {
                retval = sweep.sweepBipartite(
                  d, visit,
                  red0, red1, red, redIndex,
                  blue0, blue1, blue, blueIndex)
              }
            } else {
              iterPush(top++,
                axis+1,
                red0, red1,
                blue0, blue1,
                flip,
                -Infinity, Infinity)
              iterPush(top++,
                axis+1,
                blue0, blue1,
                red0, red1,
                flip^1,
                -Infinity, Infinity)
            }
          }
        }
      }
    }
  }
}
},{"./brute":37,"./median":39,"./partition":40,"./sweep":42,"bit-twiddle":33,"typedarray-pool":992}],39:[function(require,module,exports){
'use strict'

module.exports = findMedian

var genPartition = require('./partition')

var partitionStartLessThan = genPartition('lo<p0', ['p0'])

var PARTITION_THRESHOLD = 8   //Cut off for using insertion sort in findMedian

//Base case for median finding:  Use insertion sort
function insertionSort(d, axis, start, end, boxes, ids) {
  var elemSize = 2 * d
  var boxPtr = elemSize * (start+1) + axis
  for(var i=start+1; i<end; ++i, boxPtr+=elemSize) {
    var x = boxes[boxPtr]
    for(var j=i, ptr=elemSize*(i-1); 
        j>start && boxes[ptr+axis] > x; 
        --j, ptr-=elemSize) {
      //Swap
      var aPtr = ptr
      var bPtr = ptr+elemSize
      for(var k=0; k<elemSize; ++k, ++aPtr, ++bPtr) {
        var y = boxes[aPtr]
        boxes[aPtr] = boxes[bPtr]
        boxes[bPtr] = y
      }
      var tmp = ids[j]
      ids[j] = ids[j-1]
      ids[j-1] = tmp
    }
  }
}

//Find median using quick select algorithm
//  takes O(n) time with high probability
function findMedian(d, axis, start, end, boxes, ids) {
  if(end <= start+1) {
    return start
  }

  var lo       = start
  var hi       = end
  var mid      = ((end + start) >>> 1)
  var elemSize = 2*d
  var pivot    = mid
  var value    = boxes[elemSize*mid+axis]
  
  while(lo < hi) {
    if(hi - lo < PARTITION_THRESHOLD) {
      insertionSort(d, axis, lo, hi, boxes, ids)
      value = boxes[elemSize*mid+axis]
      break
    }
    
    //Select pivot using median-of-3
    var count  = hi - lo
    var pivot0 = (Math.random()*count+lo)|0
    var value0 = boxes[elemSize*pivot0 + axis]
    var pivot1 = (Math.random()*count+lo)|0
    var value1 = boxes[elemSize*pivot1 + axis]
    var pivot2 = (Math.random()*count+lo)|0
    var value2 = boxes[elemSize*pivot2 + axis]
    if(value0 <= value1) {
      if(value2 >= value1) {
        pivot = pivot1
        value = value1
      } else if(value0 >= value2) {
        pivot = pivot0
        value = value0
      } else {
        pivot = pivot2
        value = value2
      }
    } else {
      if(value1 >= value2) {
        pivot = pivot1
        value = value1
      } else if(value2 >= value0) {
        pivot = pivot0
        value = value0
      } else {
        pivot = pivot2
        value = value2
      }
    }

    //Swap pivot to end of array
    var aPtr = elemSize * (hi-1)
    var bPtr = elemSize * pivot
    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
      var x = boxes[aPtr]
      boxes[aPtr] = boxes[bPtr]
      boxes[bPtr] = x
    }
    var y = ids[hi-1]
    ids[hi-1] = ids[pivot]
    ids[pivot] = y

    //Partition using pivot
    pivot = partitionStartLessThan(
      d, axis, 
      lo, hi-1, boxes, ids,
      value)

    //Swap pivot back
    var aPtr = elemSize * (hi-1)
    var bPtr = elemSize * pivot
    for(var i=0; i<elemSize; ++i, ++aPtr, ++bPtr) {
      var x = boxes[aPtr]
      boxes[aPtr] = boxes[bPtr]
      boxes[bPtr] = x
    }
    var y = ids[hi-1]
    ids[hi-1] = ids[pivot]
    ids[pivot] = y

    //Swap pivot to last pivot
    if(mid < pivot) {
      hi = pivot-1
      while(lo < hi && 
        boxes[elemSize*(hi-1)+axis] === value) {
        hi -= 1
      }
      hi += 1
    } else if(pivot < mid) {
      lo = pivot + 1
      while(lo < hi &&
        boxes[elemSize*lo+axis] === value) {
        lo += 1
      }
    } else {
      break
    }
  }

  //Make sure pivot is at start
  return partitionStartLessThan(
    d, axis, 
    start, mid, boxes, ids,
    boxes[elemSize*mid+axis])
}
},{"./partition":40}],40:[function(require,module,exports){
'use strict'

module.exports = genPartition

var code = 'for(var j=2*a,k=j*c,l=k,m=c,n=b,o=a+b,p=c;d>p;++p,k+=j){var _;if($)if(m===p)m+=1,l+=j;else{for(var s=0;j>s;++s){var t=e[k+s];e[k+s]=e[l],e[l++]=t}var u=f[p];f[p]=f[m],f[m++]=u}}return m'

function genPartition(predicate, args) {
  var fargs ='abcdef'.split('').concat(args)
  var reads = []
  if(predicate.indexOf('lo') >= 0) {
    reads.push('lo=e[k+n]')
  }
  if(predicate.indexOf('hi') >= 0) {
    reads.push('hi=e[k+o]')
  }
  fargs.push(
    code.replace('_', reads.join())
        .replace('$', predicate))
  return Function.apply(void 0, fargs)
}
},{}],41:[function(require,module,exports){
'use strict';

//This code is extracted from ndarray-sort
//It is inlined here as a temporary workaround

module.exports = wrapper;

var INSERT_SORT_CUTOFF = 32

function wrapper(data, n0) {
  if (n0 <= 4*INSERT_SORT_CUTOFF) {
    insertionSort(0, n0 - 1, data);
  } else {
    quickSort(0, n0 - 1, data);
  }
}

function insertionSort(left, right, data) {
  var ptr = 2*(left+1)
  for(var i=left+1; i<=right; ++i) {
    var a = data[ptr++]
    var b = data[ptr++]
    var j = i
    var jptr = ptr-2
    while(j-- > left) {
      var x = data[jptr-2]
      var y = data[jptr-1]
      if(x < a) {
        break
      } else if(x === a && y < b) {
        break
      }
      data[jptr]   = x
      data[jptr+1] = y
      jptr -= 2
    }
    data[jptr]   = a
    data[jptr+1] = b
  }
}

function swap(i, j, data) {
  i *= 2
  j *= 2
  var x = data[i]
  var y = data[i+1]
  data[i] = data[j]
  data[i+1] = data[j+1]
  data[j] = x
  data[j+1] = y
}

function move(i, j, data) {
  i *= 2
  j *= 2
  data[i] = data[j]
  data[i+1] = data[j+1]
}

function rotate(i, j, k, data) {
  i *= 2
  j *= 2
  k *= 2
  var x = data[i]
  var y = data[i+1]
  data[i] = data[j]
  data[i+1] = data[j+1]
  data[j] = data[k]
  data[j+1] = data[k+1]
  data[k] = x
  data[k+1] = y
}

function shufflePivot(i, j, px, py, data) {
  i *= 2
  j *= 2
  data[i] = data[j]
  data[j] = px
  data[i+1] = data[j+1]
  data[j+1] = py
}

function compare(i, j, data) {
  i *= 2
  j *= 2
  var x = data[i],
      y = data[j]
  if(x < y) {
    return false
  } else if(x === y) {
    return data[i+1] > data[j+1]
  }
  return true
}

function comparePivot(i, y, b, data) {
  i *= 2
  var x = data[i]
  if(x < y) {
    return true
  } else if(x === y) {
    return data[i+1] < b
  }
  return false
}

function quickSort(left, right, data) {
  var sixth = (right - left + 1) / 6 | 0, 
      index1 = left + sixth, 
      index5 = right - sixth, 
      index3 = left + right >> 1, 
      index2 = index3 - sixth, 
      index4 = index3 + sixth, 
      el1 = index1, 
      el2 = index2, 
      el3 = index3, 
      el4 = index4, 
      el5 = index5, 
      less = left + 1, 
      great = right - 1, 
      tmp = 0
  if(compare(el1, el2, data)) {
    tmp = el1
    el1 = el2
    el2 = tmp
  }
  if(compare(el4, el5, data)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }
  if(compare(el1, el3, data)) {
    tmp = el1
    el1 = el3
    el3 = tmp
  }
  if(compare(el2, el3, data)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el1, el4, data)) {
    tmp = el1
    el1 = el4
    el4 = tmp
  }
  if(compare(el3, el4, data)) {
    tmp = el3
    el3 = el4
    el4 = tmp
  }
  if(compare(el2, el5, data)) {
    tmp = el2
    el2 = el5
    el5 = tmp
  }
  if(compare(el2, el3, data)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el4, el5, data)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }

  var pivot1X = data[2*el2]
  var pivot1Y = data[2*el2+1]
  var pivot2X = data[2*el4]
  var pivot2Y = data[2*el4+1]

  var ptr0 = 2 * el1;
  var ptr2 = 2 * el3;
  var ptr4 = 2 * el5;
  var ptr5 = 2 * index1;
  var ptr6 = 2 * index3;
  var ptr7 = 2 * index5;
  for (var i1 = 0; i1 < 2; ++i1) {
    var x = data[ptr0+i1];
    var y = data[ptr2+i1];
    var z = data[ptr4+i1];
    data[ptr5+i1] = x;
    data[ptr6+i1] = y;
    data[ptr7+i1] = z;
  }

  move(index2, left, data)
  move(index4, right, data)
  for (var k = less; k <= great; ++k) {
    if (comparePivot(k, pivot1X, pivot1Y, data)) {
      if (k !== less) {
        swap(k, less, data)
      }
      ++less;
    } else {
      if (!comparePivot(k, pivot2X, pivot2Y, data)) {
        while (true) {
          if (!comparePivot(great, pivot2X, pivot2Y, data)) {
            if (--great < k) {
              break;
            }
            continue;
          } else {
            if (comparePivot(great, pivot1X, pivot1Y, data)) {
              rotate(k, less, great, data)
              ++less;
              --great;
            } else {
              swap(k, great, data)
              --great;
            }
            break;
          }
        }
      }
    }
  }
  shufflePivot(left, less-1, pivot1X, pivot1Y, data)
  shufflePivot(right, great+1, pivot2X, pivot2Y, data)
  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
    insertionSort(left, less - 2, data);
  } else {
    quickSort(left, less - 2, data);
  }
  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
    insertionSort(great + 2, right, data);
  } else {
    quickSort(great + 2, right, data);
  }
  if (great - less <= INSERT_SORT_CUTOFF) {
    insertionSort(less, great, data);
  } else {
    quickSort(less, great, data);
  }
}
},{}],42:[function(require,module,exports){
'use strict'

module.exports = {
  init:           sqInit,
  sweepBipartite: sweepBipartite,
  sweepComplete:  sweepComplete,
  scanBipartite:  scanBipartite,
  scanComplete:   scanComplete
}

var pool  = require('typedarray-pool')
var bits  = require('bit-twiddle')
var isort = require('./sort')

//Flag for blue
var BLUE_FLAG = (1<<28)

//1D sweep event queue stuff (use pool to save space)
var INIT_CAPACITY      = 1024
var RED_SWEEP_QUEUE    = pool.mallocInt32(INIT_CAPACITY)
var RED_SWEEP_INDEX    = pool.mallocInt32(INIT_CAPACITY)
var BLUE_SWEEP_QUEUE   = pool.mallocInt32(INIT_CAPACITY)
var BLUE_SWEEP_INDEX   = pool.mallocInt32(INIT_CAPACITY)
var COMMON_SWEEP_QUEUE = pool.mallocInt32(INIT_CAPACITY)
var COMMON_SWEEP_INDEX = pool.mallocInt32(INIT_CAPACITY)
var SWEEP_EVENTS       = pool.mallocDouble(INIT_CAPACITY * 8)

//Reserves memory for the 1D sweep data structures
function sqInit(count) {
  var rcount = bits.nextPow2(count)
  if(RED_SWEEP_QUEUE.length < rcount) {
    pool.free(RED_SWEEP_QUEUE)
    RED_SWEEP_QUEUE = pool.mallocInt32(rcount)
  }
  if(RED_SWEEP_INDEX.length < rcount) {
    pool.free(RED_SWEEP_INDEX)
    RED_SWEEP_INDEX = pool.mallocInt32(rcount)
  }
  if(BLUE_SWEEP_QUEUE.length < rcount) {
    pool.free(BLUE_SWEEP_QUEUE)
    BLUE_SWEEP_QUEUE = pool.mallocInt32(rcount)
  }
  if(BLUE_SWEEP_INDEX.length < rcount) {
    pool.free(BLUE_SWEEP_INDEX)
    BLUE_SWEEP_INDEX = pool.mallocInt32(rcount)
  }
  if(COMMON_SWEEP_QUEUE.length < rcount) {
    pool.free(COMMON_SWEEP_QUEUE)
    COMMON_SWEEP_QUEUE = pool.mallocInt32(rcount)
  }
  if(COMMON_SWEEP_INDEX.length < rcount) {
    pool.free(COMMON_SWEEP_INDEX)
    COMMON_SWEEP_INDEX = pool.mallocInt32(rcount)
  }
  var eventLength = 8 * rcount
  if(SWEEP_EVENTS.length < eventLength) {
    pool.free(SWEEP_EVENTS)
    SWEEP_EVENTS = pool.mallocDouble(eventLength)
  }
}

//Remove an item from the active queue in O(1)
function sqPop(queue, index, count, item) {
  var idx = index[item]
  var top = queue[count-1]
  queue[idx] = top
  index[top] = idx
}

//Insert an item into the active queue in O(1)
function sqPush(queue, index, count, item) {
  queue[count] = item
  index[item]  = count
}

//Recursion base case: use 1D sweep algorithm
function sweepBipartite(
    d, visit,
    redStart,  redEnd, red, redIndex,
    blueStart, blueEnd, blue, blueIndex) {

  //store events as pairs [coordinate, idx]
  //
  //  red create:  -(idx+1)
  //  red destroy: idx
  //  blue create: -(idx+BLUE_FLAG)
  //  blue destroy: idx+BLUE_FLAG
  //
  var ptr      = 0
  var elemSize = 2*d
  var istart   = d-1
  var iend     = elemSize-1

  for(var i=redStart; i<redEnd; ++i) {
    var idx = redIndex[i]
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -(idx+1)
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }

  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = blueIndex[i]+BLUE_FLAG
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive  = 0
  var blueActive = 0
  for(var i=0; i<n; ++i) {
    var e = SWEEP_EVENTS[2*i+1]|0
    if(e >= BLUE_FLAG) {
      //blue destroy event
      e = (e-BLUE_FLAG)|0
      sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, e)
    } else if(e >= 0) {
      //red destroy event
      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e)
    } else if(e <= -BLUE_FLAG) {
      //blue create event
      e = (-e-BLUE_FLAG)|0
      for(var j=0; j<redActive; ++j) {
        var retval = visit(RED_SWEEP_QUEUE[j], e)
        if(retval !== void 0) {
          return retval
        }
      }
      sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, e)
    } else {
      //red create event
      e = (-e-1)|0
      for(var j=0; j<blueActive; ++j) {
        var retval = visit(e, BLUE_SWEEP_QUEUE[j])
        if(retval !== void 0) {
          return retval
        }
      }
      sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, e)
    }
  }
}

//Complete sweep
function sweepComplete(d, visit, 
  redStart, redEnd, red, redIndex,
  blueStart, blueEnd, blue, blueIndex) {

  var ptr      = 0
  var elemSize = 2*d
  var istart   = d-1
  var iend     = elemSize-1

  for(var i=redStart; i<redEnd; ++i) {
    var idx = (redIndex[i]+1)<<1
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }

  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = (blueIndex[i]+1)<<1
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = (-idx)|1
    SWEEP_EVENTS[ptr++] = blue[blueOffset+iend]
    SWEEP_EVENTS[ptr++] = idx|1
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive    = 0
  var blueActive   = 0
  var commonActive = 0
  for(var i=0; i<n; ++i) {
    var e     = SWEEP_EVENTS[2*i+1]|0
    var color = e&1
    if(i < n-1 && (e>>1) === (SWEEP_EVENTS[2*i+3]>>1)) {
      color = 2
      i += 1
    }
    
    if(e < 0) {
      //Create event
      var id = -(e>>1) - 1

      //Intersect with common
      for(var j=0; j<commonActive; ++j) {
        var retval = visit(COMMON_SWEEP_QUEUE[j], id)
        if(retval !== void 0) {
          return retval
        }
      }

      if(color !== 0) {
        //Intersect with red
        for(var j=0; j<redActive; ++j) {
          var retval = visit(RED_SWEEP_QUEUE[j], id)
          if(retval !== void 0) {
            return retval
          }
        }
      }

      if(color !== 1) {
        //Intersect with blue
        for(var j=0; j<blueActive; ++j) {
          var retval = visit(BLUE_SWEEP_QUEUE[j], id)
          if(retval !== void 0) {
            return retval
          }
        }
      }

      if(color === 0) {
        //Red
        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, id)
      } else if(color === 1) {
        //Blue
        sqPush(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive++, id)
      } else if(color === 2) {
        //Both
        sqPush(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive++, id)
      }
    } else {
      //Destroy event
      var id = (e>>1) - 1
      if(color === 0) {
        //Red
        sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, id)
      } else if(color === 1) {
        //Blue
        sqPop(BLUE_SWEEP_QUEUE, BLUE_SWEEP_INDEX, blueActive--, id)
      } else if(color === 2) {
        //Both
        sqPop(COMMON_SWEEP_QUEUE, COMMON_SWEEP_INDEX, commonActive--, id)
      }
    }
  }
}

//Sweep and prune/scanline algorithm:
//  Scan along axis, detect intersections
//  Brute force all boxes along axis
function scanBipartite(
  d, axis, visit, flip,
  redStart,  redEnd, red, redIndex,
  blueStart, blueEnd, blue, blueIndex) {
  
  var ptr      = 0
  var elemSize = 2*d
  var istart   = axis
  var iend     = axis+d

  var redShift  = 1
  var blueShift = 1
  if(flip) {
    blueShift = BLUE_FLAG
  } else {
    redShift  = BLUE_FLAG
  }

  for(var i=redStart; i<redEnd; ++i) {
    var idx = i + redShift
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }
  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = i + blueShift
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive    = 0
  for(var i=0; i<n; ++i) {
    var e = SWEEP_EVENTS[2*i+1]|0
    if(e < 0) {
      var idx   = -e
      var isRed = false
      if(idx >= BLUE_FLAG) {
        isRed = !flip
        idx -= BLUE_FLAG 
      } else {
        isRed = !!flip
        idx -= 1
      }
      if(isRed) {
        sqPush(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive++, idx)
      } else {
        var blueId  = blueIndex[idx]
        var bluePtr = elemSize * idx
        
        var b0 = blue[bluePtr+axis+1]
        var b1 = blue[bluePtr+axis+1+d]

red_loop:
        for(var j=0; j<redActive; ++j) {
          var oidx   = RED_SWEEP_QUEUE[j]
          var redPtr = elemSize * oidx

          if(b1 < red[redPtr+axis+1] || 
             red[redPtr+axis+1+d] < b0) {
            continue
          }

          for(var k=axis+2; k<d; ++k) {
            if(blue[bluePtr + k + d] < red[redPtr + k] || 
               red[redPtr + k + d] < blue[bluePtr + k]) {
              continue red_loop
            }
          }

          var redId  = redIndex[oidx]
          var retval
          if(flip) {
            retval = visit(blueId, redId)
          } else {
            retval = visit(redId, blueId)
          }
          if(retval !== void 0) {
            return retval 
          }
        }
      }
    } else {
      sqPop(RED_SWEEP_QUEUE, RED_SWEEP_INDEX, redActive--, e - redShift)
    }
  }
}

function scanComplete(
  d, axis, visit,
  redStart,  redEnd, red, redIndex,
  blueStart, blueEnd, blue, blueIndex) {

  var ptr      = 0
  var elemSize = 2*d
  var istart   = axis
  var iend     = axis+d

  for(var i=redStart; i<redEnd; ++i) {
    var idx = i + BLUE_FLAG
    var redOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = red[redOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
    SWEEP_EVENTS[ptr++] = red[redOffset+iend]
    SWEEP_EVENTS[ptr++] = idx
  }
  for(var i=blueStart; i<blueEnd; ++i) {
    var idx = i + 1
    var blueOffset = elemSize*i
    SWEEP_EVENTS[ptr++] = blue[blueOffset+istart]
    SWEEP_EVENTS[ptr++] = -idx
  }

  //process events from left->right
  var n = ptr >>> 1
  isort(SWEEP_EVENTS, n)
  
  var redActive    = 0
  for(var i=0; i<n; ++i) {
    var e = SWEEP_EVENTS[2*i+1]|0
    if(e < 0) {
      var idx   = -e
      if(idx >= BLUE_FLAG) {
        RED_SWEEP_QUEUE[redActive++] = idx - BLUE_FLAG
      } else {
        idx -= 1
        var blueId  = blueIndex[idx]
        var bluePtr = elemSize * idx

        var b0 = blue[bluePtr+axis+1]
        var b1 = blue[bluePtr+axis+1+d]

red_loop:
        for(var j=0; j<redActive; ++j) {
          var oidx   = RED_SWEEP_QUEUE[j]
          var redId  = redIndex[oidx]

          if(redId === blueId) {
            break
          }

          var redPtr = elemSize * oidx
          if(b1 < red[redPtr+axis+1] || 
            red[redPtr+axis+1+d] < b0) {
            continue
          }
          for(var k=axis+2; k<d; ++k) {
            if(blue[bluePtr + k + d] < red[redPtr + k] || 
               red[redPtr + k + d]   < blue[bluePtr + k]) {
              continue red_loop
            }
          }

          var retval = visit(redId, blueId)
          if(retval !== void 0) {
            return retval 
          }
        }
      }
    } else {
      var idx = e - BLUE_FLAG
      for(var j=redActive-1; j>=0; --j) {
        if(RED_SWEEP_QUEUE[j] === idx) {
          for(var k=j+1; k<redActive; ++k) {
            RED_SWEEP_QUEUE[k-1] = RED_SWEEP_QUEUE[k]
          }
          break
        }
      }
      --redActive
    }
  }
}
},{"./sort":41,"bit-twiddle":33,"typedarray-pool":992}],43:[function(require,module,exports){

},{}],44:[function(require,module,exports){
(function (process,Buffer){
var msg = require('pako/lib/zlib/messages');
var zstream = require('pako/lib/zlib/zstream');
var zlib_deflate = require('pako/lib/zlib/deflate.js');
var zlib_inflate = require('pako/lib/zlib/inflate.js');
var constants = require('pako/lib/zlib/constants');

for (var key in constants) {
  exports[key] = constants[key];
}

// zlib modes
exports.NONE = 0;
exports.DEFLATE = 1;
exports.INFLATE = 2;
exports.GZIP = 3;
exports.GUNZIP = 4;
exports.DEFLATERAW = 5;
exports.INFLATERAW = 6;
exports.UNZIP = 7;

/**
 * Emulate Node's zlib C++ layer for use by the JS layer in index.js
 */
function Zlib(mode) {
  if (mode < exports.DEFLATE || mode > exports.UNZIP)
    throw new TypeError("Bad argument");
    
  this.mode = mode;
  this.init_done = false;
  this.write_in_progress = false;
  this.pending_close = false;
  this.windowBits = 0;
  this.level = 0;
  this.memLevel = 0;
  this.strategy = 0;
  this.dictionary = null;
}

Zlib.prototype.init = function(windowBits, level, memLevel, strategy, dictionary) {
  this.windowBits = windowBits;
  this.level = level;
  this.memLevel = memLevel;
  this.strategy = strategy;
  // dictionary not supported.
  
  if (this.mode === exports.GZIP || this.mode === exports.GUNZIP)
    this.windowBits += 16;
    
  if (this.mode === exports.UNZIP)
    this.windowBits += 32;
    
  if (this.mode === exports.DEFLATERAW || this.mode === exports.INFLATERAW)
    this.windowBits = -this.windowBits;
    
  this.strm = new zstream();
  
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.GZIP:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflateInit2(
        this.strm,
        this.level,
        exports.Z_DEFLATED,
        this.windowBits,
        this.memLevel,
        this.strategy
      );
      break;
    case exports.INFLATE:
    case exports.GUNZIP:
    case exports.INFLATERAW:
    case exports.UNZIP:
      var status  = zlib_inflate.inflateInit2(
        this.strm,
        this.windowBits
      );
      break;
    default:
      throw new Error("Unknown mode " + this.mode);
  }
  
  if (status !== exports.Z_OK) {
    this._error(status);
    return;
  }
  
  this.write_in_progress = false;
  this.init_done = true;
};

Zlib.prototype.params = function() {
  throw new Error("deflateParams Not supported");
};

Zlib.prototype._writeCheck = function() {
  if (!this.init_done)
    throw new Error("write before init");
    
  if (this.mode === exports.NONE)
    throw new Error("already finalized");
    
  if (this.write_in_progress)
    throw new Error("write already in progress");
    
  if (this.pending_close)
    throw new Error("close is pending");
};

Zlib.prototype.write = function(flush, input, in_off, in_len, out, out_off, out_len) {    
  this._writeCheck();
  this.write_in_progress = true;
  
  var self = this;
  process.nextTick(function() {
    self.write_in_progress = false;
    var res = self._write(flush, input, in_off, in_len, out, out_off, out_len);
    self.callback(res[0], res[1]);
    
    if (self.pending_close)
      self.close();
  });
  
  return this;
};

// set method for Node buffers, used by pako
function bufferSet(data, offset) {
  for (var i = 0; i < data.length; i++) {
    this[offset + i] = data[i];
  }
}

Zlib.prototype.writeSync = function(flush, input, in_off, in_len, out, out_off, out_len) {
  this._writeCheck();
  return this._write(flush, input, in_off, in_len, out, out_off, out_len);
};

Zlib.prototype._write = function(flush, input, in_off, in_len, out, out_off, out_len) {
  this.write_in_progress = true;
  
  if (flush !== exports.Z_NO_FLUSH &&
      flush !== exports.Z_PARTIAL_FLUSH &&
      flush !== exports.Z_SYNC_FLUSH &&
      flush !== exports.Z_FULL_FLUSH &&
      flush !== exports.Z_FINISH &&
      flush !== exports.Z_BLOCK) {
    throw new Error("Invalid flush value");
  }
  
  if (input == null) {
    input = new Buffer(0);
    in_len = 0;
    in_off = 0;
  }
  
  if (out._set)
    out.set = out._set;
  else
    out.set = bufferSet;
  
  var strm = this.strm;
  strm.avail_in = in_len;
  strm.input = input;
  strm.next_in = in_off;
  strm.avail_out = out_len;
  strm.output = out;
  strm.next_out = out_off;
  
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.GZIP:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflate(strm, flush);
      break;
    case exports.UNZIP:
    case exports.INFLATE:
    case exports.GUNZIP:
    case exports.INFLATERAW:
      var status = zlib_inflate.inflate(strm, flush);
      break;
    default:
      throw new Error("Unknown mode " + this.mode);
  }
  
  if (status !== exports.Z_STREAM_END && status !== exports.Z_OK) {
    this._error(status);
  }
  
  this.write_in_progress = false;
  return [strm.avail_in, strm.avail_out];
};

Zlib.prototype.close = function() {
  if (this.write_in_progress) {
    this.pending_close = true;
    return;
  }
  
  this.pending_close = false;
  
  if (this.mode === exports.DEFLATE || this.mode === exports.GZIP || this.mode === exports.DEFLATERAW) {
    zlib_deflate.deflateEnd(this.strm);
  } else {
    zlib_inflate.inflateEnd(this.strm);
  }
  
  this.mode = exports.NONE;
};

Zlib.prototype.reset = function() {
  switch (this.mode) {
    case exports.DEFLATE:
    case exports.DEFLATERAW:
      var status = zlib_deflate.deflateReset(this.strm);
      break;
    case exports.INFLATE:
    case exports.INFLATERAW:
      var status = zlib_inflate.inflateReset(this.strm);
      break;
  }
  
  if (status !== exports.Z_OK) {
    this._error(status);
  }
};

Zlib.prototype._error = function(status) {
  this.onerror(msg[status] + ': ' + this.strm.msg, status);
  
  this.write_in_progress = false;
  if (this.pending_close)
    this.close();
};

exports.Zlib = Zlib;

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":923,"buffer":46,"pako/lib/zlib/constants":453,"pako/lib/zlib/deflate.js":455,"pako/lib/zlib/inflate.js":457,"pako/lib/zlib/messages":459,"pako/lib/zlib/zstream":461}],45:[function(require,module,exports){
(function (process,Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Transform = require('_stream_transform');

var binding = require('./binding');
var util = require('util');
var assert = require('assert').ok;

// zlib doesn't provide these, so kludge them in following the same
// const naming scheme zlib uses.
binding.Z_MIN_WINDOWBITS = 8;
binding.Z_MAX_WINDOWBITS = 15;
binding.Z_DEFAULT_WINDOWBITS = 15;

// fewer than 64 bytes per chunk is stupid.
// technically it could work with as few as 8, but even 64 bytes
// is absurdly low.  Usually a MB or more is best.
binding.Z_MIN_CHUNK = 64;
binding.Z_MAX_CHUNK = Infinity;
binding.Z_DEFAULT_CHUNK = (16 * 1024);

binding.Z_MIN_MEMLEVEL = 1;
binding.Z_MAX_MEMLEVEL = 9;
binding.Z_DEFAULT_MEMLEVEL = 8;

binding.Z_MIN_LEVEL = -1;
binding.Z_MAX_LEVEL = 9;
binding.Z_DEFAULT_LEVEL = binding.Z_DEFAULT_COMPRESSION;

// expose all the zlib constants
Object.keys(binding).forEach(function(k) {
  if (k.match(/^Z/)) exports[k] = binding[k];
});

// translation table for return codes.
exports.codes = {
  Z_OK: binding.Z_OK,
  Z_STREAM_END: binding.Z_STREAM_END,
  Z_NEED_DICT: binding.Z_NEED_DICT,
  Z_ERRNO: binding.Z_ERRNO,
  Z_STREAM_ERROR: binding.Z_STREAM_ERROR,
  Z_DATA_ERROR: binding.Z_DATA_ERROR,
  Z_MEM_ERROR: binding.Z_MEM_ERROR,
  Z_BUF_ERROR: binding.Z_BUF_ERROR,
  Z_VERSION_ERROR: binding.Z_VERSION_ERROR
};

Object.keys(exports.codes).forEach(function(k) {
  exports.codes[exports.codes[k]] = k;
});

exports.Deflate = Deflate;
exports.Inflate = Inflate;
exports.Gzip = Gzip;
exports.Gunzip = Gunzip;
exports.DeflateRaw = DeflateRaw;
exports.InflateRaw = InflateRaw;
exports.Unzip = Unzip;

exports.createDeflate = function(o) {
  return new Deflate(o);
};

exports.createInflate = function(o) {
  return new Inflate(o);
};

exports.createDeflateRaw = function(o) {
  return new DeflateRaw(o);
};

exports.createInflateRaw = function(o) {
  return new InflateRaw(o);
};

exports.createGzip = function(o) {
  return new Gzip(o);
};

exports.createGunzip = function(o) {
  return new Gunzip(o);
};

exports.createUnzip = function(o) {
  return new Unzip(o);
};


// Convenience methods.
// compress/decompress a string or buffer in one step.
exports.deflate = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Deflate(opts), buffer, callback);
};

exports.deflateSync = function(buffer, opts) {
  return zlibBufferSync(new Deflate(opts), buffer);
};

exports.gzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Gzip(opts), buffer, callback);
};

exports.gzipSync = function(buffer, opts) {
  return zlibBufferSync(new Gzip(opts), buffer);
};

exports.deflateRaw = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new DeflateRaw(opts), buffer, callback);
};

exports.deflateRawSync = function(buffer, opts) {
  return zlibBufferSync(new DeflateRaw(opts), buffer);
};

exports.unzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Unzip(opts), buffer, callback);
};

exports.unzipSync = function(buffer, opts) {
  return zlibBufferSync(new Unzip(opts), buffer);
};

exports.inflate = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Inflate(opts), buffer, callback);
};

exports.inflateSync = function(buffer, opts) {
  return zlibBufferSync(new Inflate(opts), buffer);
};

exports.gunzip = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new Gunzip(opts), buffer, callback);
};

exports.gunzipSync = function(buffer, opts) {
  return zlibBufferSync(new Gunzip(opts), buffer);
};

exports.inflateRaw = function(buffer, opts, callback) {
  if (typeof opts === 'function') {
    callback = opts;
    opts = {};
  }
  return zlibBuffer(new InflateRaw(opts), buffer, callback);
};

exports.inflateRawSync = function(buffer, opts) {
  return zlibBufferSync(new InflateRaw(opts), buffer);
};

function zlibBuffer(engine, buffer, callback) {
  var buffers = [];
  var nread = 0;

  engine.on('error', onError);
  engine.on('end', onEnd);

  engine.end(buffer);
  flow();

  function flow() {
    var chunk;
    while (null !== (chunk = engine.read())) {
      buffers.push(chunk);
      nread += chunk.length;
    }
    engine.once('readable', flow);
  }

  function onError(err) {
    engine.removeListener('end', onEnd);
    engine.removeListener('readable', flow);
    callback(err);
  }

  function onEnd() {
    var buf = Buffer.concat(buffers, nread);
    buffers = [];
    callback(null, buf);
    engine.close();
  }
}

function zlibBufferSync(engine, buffer) {
  if (typeof buffer === 'string')
    buffer = new Buffer(buffer);
  if (!Buffer.isBuffer(buffer))
    throw new TypeError('Not a string or buffer');

  var flushFlag = binding.Z_FINISH;

  return engine._processChunk(buffer, flushFlag);
}

// generic zlib
// minimal 2-byte header
function Deflate(opts) {
  if (!(this instanceof Deflate)) return new Deflate(opts);
  Zlib.call(this, opts, binding.DEFLATE);
}

function Inflate(opts) {
  if (!(this instanceof Inflate)) return new Inflate(opts);
  Zlib.call(this, opts, binding.INFLATE);
}



// gzip - bigger header, same deflate compression
function Gzip(opts) {
  if (!(this instanceof Gzip)) return new Gzip(opts);
  Zlib.call(this, opts, binding.GZIP);
}

function Gunzip(opts) {
  if (!(this instanceof Gunzip)) return new Gunzip(opts);
  Zlib.call(this, opts, binding.GUNZIP);
}



// raw - no header
function DeflateRaw(opts) {
  if (!(this instanceof DeflateRaw)) return new DeflateRaw(opts);
  Zlib.call(this, opts, binding.DEFLATERAW);
}

function InflateRaw(opts) {
  if (!(this instanceof InflateRaw)) return new InflateRaw(opts);
  Zlib.call(this, opts, binding.INFLATERAW);
}


// auto-detect header.
function Unzip(opts) {
  if (!(this instanceof Unzip)) return new Unzip(opts);
  Zlib.call(this, opts, binding.UNZIP);
}


// the Zlib class they all inherit from
// This thing manages the queue of requests, and returns
// true or false if there is anything in the queue when
// you call the .write() method.

function Zlib(opts, mode) {
  this._opts = opts = opts || {};
  this._chunkSize = opts.chunkSize || exports.Z_DEFAULT_CHUNK;

  Transform.call(this, opts);

  if (opts.flush) {
    if (opts.flush !== binding.Z_NO_FLUSH &&
        opts.flush !== binding.Z_PARTIAL_FLUSH &&
        opts.flush !== binding.Z_SYNC_FLUSH &&
        opts.flush !== binding.Z_FULL_FLUSH &&
        opts.flush !== binding.Z_FINISH &&
        opts.flush !== binding.Z_BLOCK) {
      throw new Error('Invalid flush flag: ' + opts.flush);
    }
  }
  this._flushFlag = opts.flush || binding.Z_NO_FLUSH;

  if (opts.chunkSize) {
    if (opts.chunkSize < exports.Z_MIN_CHUNK ||
        opts.chunkSize > exports.Z_MAX_CHUNK) {
      throw new Error('Invalid chunk size: ' + opts.chunkSize);
    }
  }

  if (opts.windowBits) {
    if (opts.windowBits < exports.Z_MIN_WINDOWBITS ||
        opts.windowBits > exports.Z_MAX_WINDOWBITS) {
      throw new Error('Invalid windowBits: ' + opts.windowBits);
    }
  }

  if (opts.level) {
    if (opts.level < exports.Z_MIN_LEVEL ||
        opts.level > exports.Z_MAX_LEVEL) {
      throw new Error('Invalid compression level: ' + opts.level);
    }
  }

  if (opts.memLevel) {
    if (opts.memLevel < exports.Z_MIN_MEMLEVEL ||
        opts.memLevel > exports.Z_MAX_MEMLEVEL) {
      throw new Error('Invalid memLevel: ' + opts.memLevel);
    }
  }

  if (opts.strategy) {
    if (opts.strategy != exports.Z_FILTERED &&
        opts.strategy != exports.Z_HUFFMAN_ONLY &&
        opts.strategy != exports.Z_RLE &&
        opts.strategy != exports.Z_FIXED &&
        opts.strategy != exports.Z_DEFAULT_STRATEGY) {
      throw new Error('Invalid strategy: ' + opts.strategy);
    }
  }

  if (opts.dictionary) {
    if (!Buffer.isBuffer(opts.dictionary)) {
      throw new Error('Invalid dictionary: it should be a Buffer instance');
    }
  }

  this._binding = new binding.Zlib(mode);

  var self = this;
  this._hadError = false;
  this._binding.onerror = function(message, errno) {
    // there is no way to cleanly recover.
    // continuing only obscures problems.
    self._binding = null;
    self._hadError = true;

    var error = new Error(message);
    error.errno = errno;
    error.code = exports.codes[errno];
    self.emit('error', error);
  };

  var level = exports.Z_DEFAULT_COMPRESSION;
  if (typeof opts.level === 'number') level = opts.level;

  var strategy = exports.Z_DEFAULT_STRATEGY;
  if (typeof opts.strategy === 'number') strategy = opts.strategy;

  this._binding.init(opts.windowBits || exports.Z_DEFAULT_WINDOWBITS,
                     level,
                     opts.memLevel || exports.Z_DEFAULT_MEMLEVEL,
                     strategy,
                     opts.dictionary);

  this._buffer = new Buffer(this._chunkSize);
  this._offset = 0;
  this._closed = false;
  this._level = level;
  this._strategy = strategy;

  this.once('end', this.close);
}

util.inherits(Zlib, Transform);

Zlib.prototype.params = function(level, strategy, callback) {
  if (level < exports.Z_MIN_LEVEL ||
      level > exports.Z_MAX_LEVEL) {
    throw new RangeError('Invalid compression level: ' + level);
  }
  if (strategy != exports.Z_FILTERED &&
      strategy != exports.Z_HUFFMAN_ONLY &&
      strategy != exports.Z_RLE &&
      strategy != exports.Z_FIXED &&
      strategy != exports.Z_DEFAULT_STRATEGY) {
    throw new TypeError('Invalid strategy: ' + strategy);
  }

  if (this._level !== level || this._strategy !== strategy) {
    var self = this;
    this.flush(binding.Z_SYNC_FLUSH, function() {
      self._binding.params(level, strategy);
      if (!self._hadError) {
        self._level = level;
        self._strategy = strategy;
        if (callback) callback();
      }
    });
  } else {
    process.nextTick(callback);
  }
};

Zlib.prototype.reset = function() {
  return this._binding.reset();
};

// This is the _flush function called by the transform class,
// internally, when the last chunk has been written.
Zlib.prototype._flush = function(callback) {
  this._transform(new Buffer(0), '', callback);
};

Zlib.prototype.flush = function(kind, callback) {
  var ws = this._writableState;

  if (typeof kind === 'function' || (kind === void 0 && !callback)) {
    callback = kind;
    kind = binding.Z_FULL_FLUSH;
  }

  if (ws.ended) {
    if (callback)
      process.nextTick(callback);
  } else if (ws.ending) {
    if (callback)
      this.once('end', callback);
  } else if (ws.needDrain) {
    var self = this;
    this.once('drain', function() {
      self.flush(callback);
    });
  } else {
    this._flushFlag = kind;
    this.write(new Buffer(0), '', callback);
  }
};

Zlib.prototype.close = function(callback) {
  if (callback)
    process.nextTick(callback);

  if (this._closed)
    return;

  this._closed = true;

  this._binding.close();

  var self = this;
  process.nextTick(function() {
    self.emit('close');
  });
};

Zlib.prototype._transform = function(chunk, encoding, cb) {
  var flushFlag;
  var ws = this._writableState;
  var ending = ws.ending || ws.ended;
  var last = ending && (!chunk || ws.length === chunk.length);

  if (!chunk === null && !Buffer.isBuffer(chunk))
    return cb(new Error('invalid input'));

  // If it's the last chunk, or a final flush, we use the Z_FINISH flush flag.
  // If it's explicitly flushing at some other time, then we use
  // Z_FULL_FLUSH. Otherwise, use Z_NO_FLUSH for maximum compression
  // goodness.
  if (last)
    flushFlag = binding.Z_FINISH;
  else {
    flushFlag = this._flushFlag;
    // once we've flushed the last of the queue, stop flushing and
    // go back to the normal behavior.
    if (chunk.length >= ws.length) {
      this._flushFlag = this._opts.flush || binding.Z_NO_FLUSH;
    }
  }

  var self = this;
  this._processChunk(chunk, flushFlag, cb);
};

Zlib.prototype._processChunk = function(chunk, flushFlag, cb) {
  var availInBefore = chunk && chunk.length;
  var availOutBefore = this._chunkSize - this._offset;
  var inOff = 0;

  var self = this;

  var async = typeof cb === 'function';

  if (!async) {
    var buffers = [];
    var nread = 0;

    var error;
    this.on('error', function(er) {
      error = er;
    });

    do {
      var res = this._binding.writeSync(flushFlag,
                                        chunk, // in
                                        inOff, // in_off
                                        availInBefore, // in_len
                                        this._buffer, // out
                                        this._offset, //out_off
                                        availOutBefore); // out_len
    } while (!this._hadError && callback(res[0], res[1]));

    if (this._hadError) {
      throw error;
    }

    var buf = Buffer.concat(buffers, nread);
    this.close();

    return buf;
  }

  var req = this._binding.write(flushFlag,
                                chunk, // in
                                inOff, // in_off
                                availInBefore, // in_len
                                this._buffer, // out
                                this._offset, //out_off
                                availOutBefore); // out_len

  req.buffer = chunk;
  req.callback = callback;

  function callback(availInAfter, availOutAfter) {
    if (self._hadError)
      return;

    var have = availOutBefore - availOutAfter;
    assert(have >= 0, 'have should not go down');

    if (have > 0) {
      var out = self._buffer.slice(self._offset, self._offset + have);
      self._offset += have;
      // serve some output to the consumer.
      if (async) {
        self.push(out);
      } else {
        buffers.push(out);
        nread += out.length;
      }
    }

    // exhausted the output buffer, or used all the input create a new one.
    if (availOutAfter === 0 || self._offset >= self._chunkSize) {
      availOutBefore = self._chunkSize;
      self._offset = 0;
      self._buffer = new Buffer(self._chunkSize);
    }

    if (availOutAfter === 0) {
      // Not actually done.  Need to reprocess.
      // Also, update the availInBefore to the availInAfter value,
      // so that if we have to hit it a third (fourth, etc.) time,
      // it'll have the correct byte counts.
      inOff += (availInBefore - availInAfter);
      availInBefore = availInAfter;

      if (!async)
        return true;

      var newReq = self._binding.write(flushFlag,
                                       chunk,
                                       inOff,
                                       availInBefore,
                                       self._buffer,
                                       self._offset,
                                       self._chunkSize);
      newReq.callback = callback; // this same function
      newReq.buffer = chunk;
      return;
    }

    if (!async)
      return false;

    // finished with the chunk.
    cb();
  }
};

util.inherits(Deflate, Zlib);
util.inherits(Inflate, Zlib);
util.inherits(Gzip, Zlib);
util.inherits(Gunzip, Zlib);
util.inherits(DeflateRaw, Zlib);
util.inherits(InflateRaw, Zlib);
util.inherits(Unzip, Zlib);

}).call(this,require('_process'),require("buffer").Buffer)
},{"./binding":44,"_process":923,"_stream_transform":943,"assert":9,"buffer":46,"util":1001}],46:[function(require,module,exports){
(function (global){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var isArray = require('isarray')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Due to various browser bugs, sometimes the Object implementation will be used even
 * when the browser supports typed arrays.
 *
 * Note:
 *
 *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
 *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *     incorrect length in some situations.

 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
 * get the Object implementation, which is slower but behaves correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
  ? global.TYPED_ARRAY_SUPPORT
  : typedArraySupport()

/*
 * Export kMaxLength after typed array support is determined.
 */
exports.kMaxLength = kMaxLength()

function typedArraySupport () {
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
    return arr.foo() === 42 && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
}

function kMaxLength () {
  return Buffer.TYPED_ARRAY_SUPPORT
    ? 0x7fffffff
    : 0x3fffffff
}

function createBuffer (that, length) {
  if (kMaxLength() < length) {
    throw new RangeError('Invalid typed array length')
  }
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = new Uint8Array(length)
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    if (that === null) {
      that = new Buffer(length)
    }
    that.length = length
  }

  return that
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
    return new Buffer(arg, encodingOrOffset, length)
  }

  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new Error(
        'If encoding is specified then the first argument must be a string'
      )
    }
    return allocUnsafe(this, arg)
  }
  return from(this, arg, encodingOrOffset, length)
}

Buffer.poolSize = 8192 // not used by this implementation

// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
  arr.__proto__ = Buffer.prototype
  return arr
}

function from (that, value, encodingOrOffset, length) {
  if (typeof value === 'number') {
    throw new TypeError('"value" argument must not be a number')
  }

  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
    return fromArrayBuffer(that, value, encodingOrOffset, length)
  }

  if (typeof value === 'string') {
    return fromString(that, value, encodingOrOffset)
  }

  return fromObject(that, value)
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(null, value, encodingOrOffset, length)
}

if (Buffer.TYPED_ARRAY_SUPPORT) {
  Buffer.prototype.__proto__ = Uint8Array.prototype
  Buffer.__proto__ = Uint8Array
  if (typeof Symbol !== 'undefined' && Symbol.species &&
      Buffer[Symbol.species] === Buffer) {
    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
    Object.defineProperty(Buffer, Symbol.species, {
      value: null,
      configurable: true
    })
  }
}

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be a number')
  } else if (size < 0) {
    throw new RangeError('"size" argument must not be negative')
  }
}

function alloc (that, size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(that, size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(that, size).fill(fill, encoding)
      : createBuffer(that, size).fill(fill)
  }
  return createBuffer(that, size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(null, size, fill, encoding)
}

function allocUnsafe (that, size) {
  assertSize(size)
  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < size; ++i) {
      that[i] = 0
    }
  }
  return that
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(null, size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(null, size)
}

function fromString (that, string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('"encoding" must be a valid string encoding')
  }

  var length = byteLength(string, encoding) | 0
  that = createBuffer(that, length)

  var actual = that.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    that = that.slice(0, actual)
  }

  return that
}

function fromArrayLike (that, array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  that = createBuffer(that, length)
  for (var i = 0; i < length; i += 1) {
    that[i] = array[i] & 255
  }
  return that
}

function fromArrayBuffer (that, array, byteOffset, length) {
  array.byteLength // this throws if `array` is not a valid ArrayBuffer

  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('\'offset\' is out of bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('\'length\' is out of bounds')
  }

  if (byteOffset === undefined && length === undefined) {
    array = new Uint8Array(array)
  } else if (length === undefined) {
    array = new Uint8Array(array, byteOffset)
  } else {
    array = new Uint8Array(array, byteOffset, length)
  }

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Return an augmented `Uint8Array` instance, for best performance
    that = array
    that.__proto__ = Buffer.prototype
  } else {
    // Fallback: Return an object instance of the Buffer class
    that = fromArrayLike(that, array)
  }
  return that
}

function fromObject (that, obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    that = createBuffer(that, len)

    if (that.length === 0) {
      return that
    }

    obj.copy(that, 0, 0, len)
    return that
  }

  if (obj) {
    if ((typeof ArrayBuffer !== 'undefined' &&
        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
      if (typeof obj.length !== 'number' || isnan(obj.length)) {
        return createBuffer(that, 0)
      }
      return fromArrayLike(that, obj)
    }

    if (obj.type === 'Buffer' && isArray(obj.data)) {
      return fromArrayLike(that, obj.data)
    }
  }

  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}

function checked (length) {
  // Note: cannot use `length < kMaxLength()` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= kMaxLength()) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + kMaxLength().toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function compare (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError('Arguments must be Buffers')
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    string = '' + string
  }

  var len = string.length
  if (len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
      case undefined:
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) return utf8ToBytes(string).length // assume utf8
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length | 0
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max) str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (!Buffer.isBuffer(target)) {
    throw new TypeError('Argument must be a Buffer')
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset  // Coerce to Number.
  if (isNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (Buffer.TYPED_ARRAY_SUPPORT &&
        typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset | 0
    if (isFinite(length)) {
      length = length | 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  // legacy write(string, encoding, offset, length) - remove in v0.13
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
      : (firstByte > 0xBF) ? 2
      : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    newBuf = this.subarray(start, end)
    newBuf.__proto__ = Buffer.prototype
  } else {
    var sliceLen = end - start
    newBuf = new Buffer(sliceLen, undefined)
    for (var i = 0; i < sliceLen; ++i) {
      newBuf[i] = this[i + start]
    }
  }

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  byteLength = byteLength | 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = (value & 0xff)
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) {
    var limit = Math.pow(2, 8 * byteLength - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = (value & 0xff)
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value & 0xff)
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset | 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = (value & 0xff)
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start
  var i

  if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    // ascending copy from start
    for (i = 0; i < len; ++i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, start + len),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if (code < 256) {
        val = code
      }
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : utf8ToBytes(new Buffer(val, encoding).toString())
    var len = bytes.length
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

function isnan (val) {
  return val !== val // eslint-disable-line no-self-compare
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"base64-js":12,"ieee754":260,"isarray":47}],47:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],48:[function(require,module,exports){
(function (global){
'use strict';

var buffer = require('buffer');
var Buffer = buffer.Buffer;
var SlowBuffer = buffer.SlowBuffer;
var MAX_LEN = buffer.kMaxLength || 2147483647;
exports.alloc = function alloc(size, fill, encoding) {
  if (typeof Buffer.alloc === 'function') {
    return Buffer.alloc(size, fill, encoding);
  }
  if (typeof encoding === 'number') {
    throw new TypeError('encoding must not be number');
  }
  if (typeof size !== 'number') {
    throw new TypeError('size must be a number');
  }
  if (size > MAX_LEN) {
    throw new RangeError('size is too large');
  }
  var enc = encoding;
  var _fill = fill;
  if (_fill === undefined) {
    enc = undefined;
    _fill = 0;
  }
  var buf = new Buffer(size);
  if (typeof _fill === 'string') {
    var fillBuf = new Buffer(_fill, enc);
    var flen = fillBuf.length;
    var i = -1;
    while (++i < size) {
      buf[i] = fillBuf[i % flen];
    }
  } else {
    buf.fill(_fill);
  }
  return buf;
}
exports.allocUnsafe = function allocUnsafe(size) {
  if (typeof Buffer.allocUnsafe === 'function') {
    return Buffer.allocUnsafe(size);
  }
  if (typeof size !== 'number') {
    throw new TypeError('size must be a number');
  }
  if (size > MAX_LEN) {
    throw new RangeError('size is too large');
  }
  return new Buffer(size);
}
exports.from = function from(value, encodingOrOffset, length) {
  if (typeof Buffer.from === 'function' && (!global.Uint8Array || Uint8Array.from !== Buffer.from)) {
    return Buffer.from(value, encodingOrOffset, length);
  }
  if (typeof value === 'number') {
    throw new TypeError('"value" argument must not be a number');
  }
  if (typeof value === 'string') {
    return new Buffer(value, encodingOrOffset);
  }
  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
    var offset = encodingOrOffset;
    if (arguments.length === 1) {
      return new Buffer(value);
    }
    if (typeof offset === 'undefined') {
      offset = 0;
    }
    var len = length;
    if (typeof len === 'undefined') {
      len = value.byteLength - offset;
    }
    if (offset >= value.byteLength) {
      throw new RangeError('\'offset\' is out of bounds');
    }
    if (len > value.byteLength - offset) {
      throw new RangeError('\'length\' is out of bounds');
    }
    return new Buffer(value.slice(offset, offset + len));
  }
  if (Buffer.isBuffer(value)) {
    var out = new Buffer(value.length);
    value.copy(out, 0, 0, value.length);
    return out;
  }
  if (value) {
    if (Array.isArray(value) || (typeof ArrayBuffer !== 'undefined' && value.buffer instanceof ArrayBuffer) || 'length' in value) {
      return new Buffer(value);
    }
    if (value.type === 'Buffer' && Array.isArray(value.data)) {
      return new Buffer(value.data);
    }
  }

  throw new TypeError('First argument must be a string, Buffer, ' + 'ArrayBuffer, Array, or array-like object.');
}
exports.allocUnsafeSlow = function allocUnsafeSlow(size) {
  if (typeof Buffer.allocUnsafeSlow === 'function') {
    return Buffer.allocUnsafeSlow(size);
  }
  if (typeof size !== 'number') {
    throw new TypeError('size must be a number');
  }
  if (size >= MAX_LEN) {
    throw new RangeError('size is too large');
  }
  return new SlowBuffer(size);
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"buffer":46}],49:[function(require,module,exports){
'use strict'

var monotoneTriangulate = require('./lib/monotone')
var makeIndex = require('./lib/triangulation')
var delaunayFlip = require('./lib/delaunay')
var filterTriangulation = require('./lib/filter')

module.exports = cdt2d

function canonicalizeEdge(e) {
  return [Math.min(e[0], e[1]), Math.max(e[0], e[1])]
}

function compareEdge(a, b) {
  return a[0]-b[0] || a[1]-b[1]
}

function canonicalizeEdges(edges) {
  return edges.map(canonicalizeEdge).sort(compareEdge)
}

function getDefault(options, property, dflt) {
  if(property in options) {
    return options[property]
  }
  return dflt
}

function cdt2d(points, edges, options) {

  if(!Array.isArray(edges)) {
    options = edges || {}
    edges = []
  } else {
    options = options || {}
    edges = edges || []
  }

  //Parse out options
  var delaunay = !!getDefault(options, 'delaunay', true)
  var interior = !!getDefault(options, 'interior', true)
  var exterior = !!getDefault(options, 'exterior', true)
  var infinity = !!getDefault(options, 'infinity', false)

  //Handle trivial case
  if((!interior && !exterior) || points.length === 0) {
    return []
  }

  //Construct initial triangulation
  var cells = monotoneTriangulate(points, edges)

  //If delaunay refinement needed, then improve quality by edge flipping
  if(delaunay || interior !== exterior || infinity) {

    //Index all of the cells to support fast neighborhood queries
    var triangulation = makeIndex(points.length, canonicalizeEdges(edges))
    for(var i=0; i<cells.length; ++i) {
      var f = cells[i]
      triangulation.addTriangle(f[0], f[1], f[2])
    }

    //Run edge flipping
    if(delaunay) {
      delaunayFlip(points, triangulation)
    }

    //Filter points
    if(!exterior) {
      return filterTriangulation(triangulation, -1)
    } else if(!interior) {
      return filterTriangulation(triangulation,  1, infinity)
    } else if(infinity) {
      return filterTriangulation(triangulation, 0, infinity)
    } else {
      return triangulation.cells()
    }
    
  } else {
    return cells
  }
}

},{"./lib/delaunay":50,"./lib/filter":51,"./lib/monotone":52,"./lib/triangulation":53}],50:[function(require,module,exports){
'use strict'

var inCircle = require('robust-in-sphere')[4]
var bsearch = require('binary-search-bounds')

module.exports = delaunayRefine

function testFlip(points, triangulation, stack, a, b, x) {
  var y = triangulation.opposite(a, b)

  //Test boundary edge
  if(y < 0) {
    return
  }

  //Swap edge if order flipped
  if(b < a) {
    var tmp = a
    a = b
    b = tmp
    tmp = x
    x = y
    y = tmp
  }

  //Test if edge is constrained
  if(triangulation.isConstraint(a, b)) {
    return
  }

  //Test if edge is delaunay
  if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
    stack.push(a, b)
  }
}

//Assume edges are sorted lexicographically
function delaunayRefine(points, triangulation) {
  var stack = []

  var numPoints = points.length
  var stars = triangulation.stars
  for(var a=0; a<numPoints; ++a) {
    var star = stars[a]
    for(var j=1; j<star.length; j+=2) {
      var b = star[j]

      //If order is not consistent, then skip edge
      if(b < a) {
        continue
      }

      //Check if edge is constrained
      if(triangulation.isConstraint(a, b)) {
        continue
      }

      //Find opposite edge
      var x = star[j-1], y = -1
      for(var k=1; k<star.length; k+=2) {
        if(star[k-1] === b) {
          y = star[k]
          break
        }
      }

      //If this is a boundary edge, don't flip it
      if(y < 0) {
        continue
      }

      //If edge is in circle, flip it
      if(inCircle(points[a], points[b], points[x], points[y]) < 0) {
        stack.push(a, b)
      }
    }
  }

  while(stack.length > 0) {
    var b = stack.pop()
    var a = stack.pop()

    //Find opposite pairs
    var x = -1, y = -1
    var star = stars[a]
    for(var i=1; i<star.length; i+=2) {
      var s = star[i-1]
      var t = star[i]
      if(s === b) {
        y = t
      } else if(t === b) {
        x = s
      }
    }

    //If x/y are both valid then skip edge
    if(x < 0 || y < 0) {
      continue
    }

    //If edge is now delaunay, then don't flip it
    if(inCircle(points[a], points[b], points[x], points[y]) >= 0) {
      continue
    }

    //Flip the edge
    triangulation.flip(a, b)

    //Test flipping neighboring edges
    testFlip(points, triangulation, stack, x, a, y)
    testFlip(points, triangulation, stack, a, y, x)
    testFlip(points, triangulation, stack, y, b, x)
    testFlip(points, triangulation, stack, b, x, y)
  }
}

},{"binary-search-bounds":54,"robust-in-sphere":952}],51:[function(require,module,exports){
'use strict'

var bsearch = require('binary-search-bounds')

module.exports = classifyFaces

function FaceIndex(cells, neighbor, constraint, flags, active, next, boundary) {
  this.cells       = cells
  this.neighbor    = neighbor
  this.flags       = flags
  this.constraint  = constraint
  this.active      = active
  this.next        = next
  this.boundary    = boundary
}

var proto = FaceIndex.prototype

function compareCell(a, b) {
  return a[0] - b[0] ||
         a[1] - b[1] ||
         a[2] - b[2]
}

proto.locate = (function() {
  var key = [0,0,0]
  return function(a, b, c) {
    var x = a, y = b, z = c
    if(b < c) {
      if(b < a) {
        x = b
        y = c
        z = a
      }
    } else if(c < a) {
      x = c
      y = a
      z = b
    }
    if(x < 0) {
      return -1
    }
    key[0] = x
    key[1] = y
    key[2] = z
    return bsearch.eq(this.cells, key, compareCell)
  }
})()

function indexCells(triangulation, infinity) {
  //First get cells and canonicalize
  var cells = triangulation.cells()
  var nc = cells.length
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    var x = c[0], y = c[1], z = c[2]
    if(y < z) {
      if(y < x) {
        c[0] = y
        c[1] = z
        c[2] = x
      }
    } else if(z < x) {
      c[0] = z
      c[1] = x
      c[2] = y
    }
  }
  cells.sort(compareCell)

  //Initialize flag array
  var flags = new Array(nc)
  for(var i=0; i<flags.length; ++i) {
    flags[i] = 0
  }

  //Build neighbor index, initialize queues
  var active = []
  var next   = []
  var neighbor = new Array(3*nc)
  var constraint = new Array(3*nc)
  var boundary = null
  if(infinity) {
    boundary = []
  }
  var index = new FaceIndex(
    cells,
    neighbor,
    constraint,
    flags,
    active,
    next,
    boundary)
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    for(var j=0; j<3; ++j) {
      var x = c[j], y = c[(j+1)%3]
      var a = neighbor[3*i+j] = index.locate(y, x, triangulation.opposite(y, x))
      var b = constraint[3*i+j] = triangulation.isConstraint(x, y)
      if(a < 0) {
        if(b) {
          next.push(i)
        } else {
          active.push(i)
          flags[i] = 1
        }
        if(infinity) {
          boundary.push([y, x, -1])
        }
      }
    }
  }
  return index
}

function filterCells(cells, flags, target) {
  var ptr = 0
  for(var i=0; i<cells.length; ++i) {
    if(flags[i] === target) {
      cells[ptr++] = cells[i]
    }
  }
  cells.length = ptr
  return cells
}

function classifyFaces(triangulation, target, infinity) {
  var index = indexCells(triangulation, infinity)

  if(target === 0) {
    if(infinity) {
      return index.cells.concat(index.boundary)
    } else {
      return index.cells
    }
  }

  var side = 1
  var active = index.active
  var next = index.next
  var flags = index.flags
  var cells = index.cells
  var constraint = index.constraint
  var neighbor = index.neighbor

  while(active.length > 0 || next.length > 0) {
    while(active.length > 0) {
      var t = active.pop()
      if(flags[t] === -side) {
        continue
      }
      flags[t] = side
      var c = cells[t]
      for(var j=0; j<3; ++j) {
        var f = neighbor[3*t+j]
        if(f >= 0 && flags[f] === 0) {
          if(constraint[3*t+j]) {
            next.push(f)
          } else {
            active.push(f)
            flags[f] = side
          }
        }
      }
    }

    //Swap arrays and loop
    var tmp = next
    next = active
    active = tmp
    next.length = 0
    side = -side
  }

  var result = filterCells(cells, flags, target)
  if(infinity) {
    return result.concat(index.boundary)
  }
  return result
}

},{"binary-search-bounds":54}],52:[function(require,module,exports){
'use strict'

var bsearch = require('binary-search-bounds')
var orient = require('robust-orientation')[3]

var EVENT_POINT = 0
var EVENT_END   = 1
var EVENT_START = 2

module.exports = monotoneTriangulate

//A partial convex hull fragment, made of two unimonotone polygons
function PartialHull(a, b, idx, lowerIds, upperIds) {
  this.a = a
  this.b = b
  this.idx = idx
  this.lowerIds = lowerIds
  this.upperIds = upperIds
}

//An event in the sweep line procedure
function Event(a, b, type, idx) {
  this.a    = a
  this.b    = b
  this.type = type
  this.idx  = idx
}

//This is used to compare events for the sweep line procedure
// Points are:
//  1. sorted lexicographically
//  2. sorted by type  (point < end < start)
//  3. segments sorted by winding order
//  4. sorted by index
function compareEvent(a, b) {
  var d =
    (a.a[0] - b.a[0]) ||
    (a.a[1] - b.a[1]) ||
    (a.type - b.type)
  if(d) { return d }
  if(a.type !== EVENT_POINT) {
    d = orient(a.a, a.b, b.b)
    if(d) { return d }
  }
  return a.idx - b.idx
}

function testPoint(hull, p) {
  return orient(hull.a, hull.b, p)
}

function addPoint(cells, hulls, points, p, idx) {
  var lo = bsearch.lt(hulls, p, testPoint)
  var hi = bsearch.gt(hulls, p, testPoint)
  for(var i=lo; i<hi; ++i) {
    var hull = hulls[i]

    //Insert p into lower hull
    var lowerIds = hull.lowerIds
    var m = lowerIds.length
    while(m > 1 && orient(
        points[lowerIds[m-2]],
        points[lowerIds[m-1]],
        p) > 0) {
      cells.push(
        [lowerIds[m-1],
         lowerIds[m-2],
         idx])
      m -= 1
    }
    lowerIds.length = m
    lowerIds.push(idx)

    //Insert p into upper hull
    var upperIds = hull.upperIds
    var m = upperIds.length
    while(m > 1 && orient(
        points[upperIds[m-2]],
        points[upperIds[m-1]],
        p) < 0) {
      cells.push(
        [upperIds[m-2],
         upperIds[m-1],
         idx])
      m -= 1
    }
    upperIds.length = m
    upperIds.push(idx)
  }
}

function findSplit(hull, edge) {
  var d
  if(hull.a[0] < edge.a[0]) {
    d = orient(hull.a, hull.b, edge.a)
  } else {
    d = orient(edge.b, edge.a, hull.a)
  }
  if(d) { return d }
  if(edge.b[0] < hull.b[0]) {
    d = orient(hull.a, hull.b, edge.b)
  } else {
    d = orient(edge.b, edge.a, hull.b)
  }
  return d || hull.idx - edge.idx
}

function splitHulls(hulls, points, event) {
  var splitIdx = bsearch.le(hulls, event, findSplit)
  var hull = hulls[splitIdx]
  var upperIds = hull.upperIds
  var x = upperIds[upperIds.length-1]
  hull.upperIds = [x]
  hulls.splice(splitIdx+1, 0,
    new PartialHull(event.a, event.b, event.idx, [x], upperIds))
}


function mergeHulls(hulls, points, event) {
  //Swap pointers for merge search
  var tmp = event.a
  event.a = event.b
  event.b = tmp
  var mergeIdx = bsearch.eq(hulls, event, findSplit)
  var upper = hulls[mergeIdx]
  var lower = hulls[mergeIdx-1]
  lower.upperIds = upper.upperIds
  hulls.splice(mergeIdx, 1)
}


function monotoneTriangulate(points, edges) {

  var numPoints = points.length
  var numEdges = edges.length

  var events = []

  //Create point events
  for(var i=0; i<numPoints; ++i) {
    events.push(new Event(
      points[i],
      null,
      EVENT_POINT,
      i))
  }

  //Create edge events
  for(var i=0; i<numEdges; ++i) {
    var e = edges[i]
    var a = points[e[0]]
    var b = points[e[1]]
    if(a[0] < b[0]) {
      events.push(
        new Event(a, b, EVENT_START, i),
        new Event(b, a, EVENT_END, i))
    } else if(a[0] > b[0]) {
      events.push(
        new Event(b, a, EVENT_START, i),
        new Event(a, b, EVENT_END, i))
    }
  }

  //Sort events
  events.sort(compareEvent)

  //Initialize hull
  var minX = events[0].a[0] - (1 + Math.abs(events[0].a[0])) * Math.pow(2, -52)
  var hull = [ new PartialHull([minX, 1], [minX, 0], -1, [], [], [], []) ]

  //Process events in order
  var cells = []
  for(var i=0, numEvents=events.length; i<numEvents; ++i) {
    var event = events[i]
    var type = event.type
    if(type === EVENT_POINT) {
      addPoint(cells, hull, points, event.a, event.idx)
    } else if(type === EVENT_START) {
      splitHulls(hull, points, event)
    } else {
      mergeHulls(hull, points, event)
    }
  }

  //Return triangulation
  return cells
}

},{"binary-search-bounds":54,"robust-orientation":954}],53:[function(require,module,exports){
'use strict'

var bsearch = require('binary-search-bounds')

module.exports = createTriangulation

function Triangulation(stars, edges) {
  this.stars = stars
  this.edges = edges
}

var proto = Triangulation.prototype

function removePair(list, j, k) {
  for(var i=1, n=list.length; i<n; i+=2) {
    if(list[i-1] === j && list[i] === k) {
      list[i-1] = list[n-2]
      list[i] = list[n-1]
      list.length = n - 2
      return
    }
  }
}

proto.isConstraint = (function() {
  var e = [0,0]
  function compareLex(a, b) {
    return a[0] - b[0] || a[1] - b[1]
  }
  return function(i, j) {
    e[0] = Math.min(i,j)
    e[1] = Math.max(i,j)
    return bsearch.eq(this.edges, e, compareLex) >= 0
  }
})()

proto.removeTriangle = function(i, j, k) {
  var stars = this.stars
  removePair(stars[i], j, k)
  removePair(stars[j], k, i)
  removePair(stars[k], i, j)
}

proto.addTriangle = function(i, j, k) {
  var stars = this.stars
  stars[i].push(j, k)
  stars[j].push(k, i)
  stars[k].push(i, j)
}

proto.opposite = function(j, i) {
  var list = this.stars[i]
  for(var k=1, n=list.length; k<n; k+=2) {
    if(list[k] === j) {
      return list[k-1]
    }
  }
  return -1
}

proto.flip = function(i, j) {
  var a = this.opposite(i, j)
  var b = this.opposite(j, i)
  this.removeTriangle(i, j, a)
  this.removeTriangle(j, i, b)
  this.addTriangle(i, b, a)
  this.addTriangle(j, a, b)
}

proto.edges = function() {
  var stars = this.stars
  var result = []
  for(var i=0, n=stars.length; i<n; ++i) {
    var list = stars[i]
    for(var j=0, m=list.length; j<m; j+=2) {
      result.push([list[j], list[j+1]])
    }
  }
  return result
}

proto.cells = function() {
  var stars = this.stars
  var result = []
  for(var i=0, n=stars.length; i<n; ++i) {
    var list = stars[i]
    for(var j=0, m=list.length; j<m; j+=2) {
      var s = list[j]
      var t = list[j+1]
      if(i < Math.min(s, t)) {
        result.push([i, s, t])
      }
    }
  }
  return result
}

function createTriangulation(numVerts, edges) {
  var stars = new Array(numVerts)
  for(var i=0; i<numVerts; ++i) {
    stars[i] = []
  }
  return new Triangulation(stars, edges)
}

},{"binary-search-bounds":54}],54:[function(require,module,exports){
"use strict"

function compileSearch(funcName, predicate, reversed, extraArgs, earlyOut) {
  var code = [
    "function ", funcName, "(a,l,h,", extraArgs.join(","),  "){",
earlyOut ? "" : "var i=", (reversed ? "l-1" : "h+1"),
";while(l<=h){\
var m=(l+h)>>>1,x=a[m]"]
  if(earlyOut) {
    if(predicate.indexOf("c") < 0) {
      code.push(";if(x===y){return m}else if(x<=y){")
    } else {
      code.push(";var p=c(x,y);if(p===0){return m}else if(p<=0){")
    }
  } else {
    code.push(";if(", predicate, "){i=m;")
  }
  if(reversed) {
    code.push("l=m+1}else{h=m-1}")
  } else {
    code.push("h=m-1}else{l=m+1}")
  }
  code.push("}")
  if(earlyOut) {
    code.push("return -1};")
  } else {
    code.push("return i};")
  }
  return code.join("")
}

function compileBoundsSearch(predicate, reversed, suffix, earlyOut) {
  var result = new Function([
  compileSearch("A", "x" + predicate + "y", reversed, ["y"], earlyOut),
  compileSearch("P", "c(x,y)" + predicate + "0", reversed, ["y", "c"], earlyOut),
"function dispatchBsearch", suffix, "(a,y,c,l,h){\
if(typeof(c)==='function'){\
return P(a,(l===void 0)?0:l|0,(h===void 0)?a.length-1:h|0,y,c)\
}else{\
return A(a,(c===void 0)?0:c|0,(l===void 0)?a.length-1:l|0,y)\
}}\
return dispatchBsearch", suffix].join(""))
  return result()
}

module.exports = {
  ge: compileBoundsSearch(">=", false, "GE"),
  gt: compileBoundsSearch(">", false, "GT"),
  lt: compileBoundsSearch("<", true, "LT"),
  le: compileBoundsSearch("<=", true, "LE"),
  eq: compileBoundsSearch("-", true, "EQ", true)
}

},{}],55:[function(require,module,exports){
'use strict'

module.exports = orientation

function orientation(s) {
  var p = 1
  for(var i=1; i<s.length; ++i) {
    for(var j=0; j<i; ++j) {
      if(s[i] < s[j]) {
        p = -p
      } else if(s[j] === s[i]) {
        return 0
      }
    }
  }
  return p
}

},{}],56:[function(require,module,exports){
"use strict"

var dup = require("dup")
var solve = require("robust-linear-solve")

function dot(a, b) {
  var s = 0.0
  var d = a.length
  for(var i=0; i<d; ++i) {
    s += a[i] * b[i]
  }
  return s
}

function barycentricCircumcenter(points) {
  var N = points.length
  if(N === 0) {
    return []
  }
  
  var D = points[0].length
  var A = dup([points.length+1, points.length+1], 1.0)
  var b = dup([points.length+1], 1.0)
  A[N][N] = 0.0
  for(var i=0; i<N; ++i) {
    for(var j=0; j<=i; ++j) {
      A[j][i] = A[i][j] = 2.0 * dot(points[i], points[j])
    }
    b[i] = dot(points[i], points[i])
  }
  var x = solve(A, b)

  var denom = 0.0
  var h = x[N+1]
  for(var i=0; i<h.length; ++i) {
    denom += h[i]
  }

  var y = new Array(N)
  for(var i=0; i<N; ++i) {
    var h = x[i]
    var numer = 0.0
    for(var j=0; j<h.length; ++j) {
      numer += h[j]
    }
    y[i] =  numer / denom
  }

  return y
}

function circumcenter(points) {
  if(points.length === 0) {
    return []
  }
  var D = points[0].length
  var result = dup([D])
  var weights = barycentricCircumcenter(points)
  for(var i=0; i<points.length; ++i) {
    for(var j=0; j<D; ++j) {
      result[j] += points[i][j] * weights[i]
    }
  }
  return result
}

circumcenter.barycenetric = barycentricCircumcenter
module.exports = circumcenter
},{"dup":90,"robust-linear-solve":953}],57:[function(require,module,exports){
module.exports = circumradius

var circumcenter = require('circumcenter')

function circumradius(points) {
  var center = circumcenter(points)
  var avgDist = 0.0
  for(var i=0; i<points.length; ++i) {
    var p = points[i]
    for(var j=0; j<center.length; ++j) {
      avgDist += Math.pow(p[j] - center[j], 2)
    }
  }
  return Math.sqrt(avgDist / points.length)
}
},{"circumcenter":56}],58:[function(require,module,exports){
'use strict'

module.exports = cleanPSLG

var UnionFind = require('union-find')
var boxIntersect = require('box-intersect')
var segseg = require('robust-segment-intersect')
var rat = require('big-rat')
var ratCmp = require('big-rat/cmp')
var ratToFloat = require('big-rat/to-float')
var ratVec = require('rat-vec')
var nextafter = require('nextafter')

var solveIntersection = require('./lib/rat-seg-intersect')

// Bounds on a rational number when rounded to a float
function boundRat (r) {
  var f = ratToFloat(r)
  return [
    nextafter(f, -Infinity),
    nextafter(f, Infinity)
  ]
}

// Convert a list of edges in a pslg to bounding boxes
function boundEdges (points, edges) {
  var bounds = new Array(edges.length)
  for (var i = 0; i < edges.length; ++i) {
    var e = edges[i]
    var a = points[e[0]]
    var b = points[e[1]]
    bounds[i] = [
      nextafter(Math.min(a[0], b[0]), -Infinity),
      nextafter(Math.min(a[1], b[1]), -Infinity),
      nextafter(Math.max(a[0], b[0]), Infinity),
      nextafter(Math.max(a[1], b[1]), Infinity)
    ]
  }
  return bounds
}

// Convert a list of points into bounding boxes by duplicating coords
function boundPoints (points) {
  var bounds = new Array(points.length)
  for (var i = 0; i < points.length; ++i) {
    var p = points[i]
    bounds[i] = [
      nextafter(p[0], -Infinity),
      nextafter(p[1], -Infinity),
      nextafter(p[0], Infinity),
      nextafter(p[1], Infinity)
    ]
  }
  return bounds
}

// Find all pairs of crossing edges in a pslg (given edge bounds)
function getCrossings (points, edges, edgeBounds) {
  var result = []
  boxIntersect(edgeBounds, function (i, j) {
    var e = edges[i]
    var f = edges[j]
    if (e[0] === f[0] || e[0] === f[1] ||
      e[1] === f[0] || e[1] === f[1]) {
      return
    }
    var a = points[e[0]]
    var b = points[e[1]]
    var c = points[f[0]]
    var d = points[f[1]]
    if (segseg(a, b, c, d)) {
      result.push([i, j])
    }
  })
  return result
}

// Find all pairs of crossing vertices in a pslg (given edge/vert bounds)
function getTJunctions (points, edges, edgeBounds, vertBounds) {
  var result = []
  boxIntersect(edgeBounds, vertBounds, function (i, v) {
    var e = edges[i]
    if (e[0] === v || e[1] === v) {
      return
    }
    var p = points[v]
    var a = points[e[0]]
    var b = points[e[1]]
    if (segseg(a, b, p, p)) {
      result.push([i, v])
    }
  })
  return result
}

// Cut edges along crossings/tjunctions
function cutEdges (floatPoints, edges, crossings, junctions, useColor) {
  var i, e

  // Convert crossings into tjunctions by constructing rational points
  var ratPoints = floatPoints.map(function(p) {
      return [
          rat(p[0]),
          rat(p[1])
      ]
  })
  for (i = 0; i < crossings.length; ++i) {
    var crossing = crossings[i]
    e = crossing[0]
    var f = crossing[1]
    var ee = edges[e]
    var ef = edges[f]
    var x = solveIntersection(
      ratVec(floatPoints[ee[0]]),
      ratVec(floatPoints[ee[1]]),
      ratVec(floatPoints[ef[0]]),
      ratVec(floatPoints[ef[1]]))
    if (!x) {
      // Segments are parallel, should already be handled by t-junctions
      continue
    }
    var idx = floatPoints.length
    floatPoints.push([ratToFloat(x[0]), ratToFloat(x[1])])
    ratPoints.push(x)
    junctions.push([e, idx], [f, idx])
  }

  // Sort tjunctions
  junctions.sort(function (a, b) {
    if (a[0] !== b[0]) {
      return a[0] - b[0]
    }
    var u = ratPoints[a[1]]
    var v = ratPoints[b[1]]
    return ratCmp(u[0], v[0]) || ratCmp(u[1], v[1])
  })

  // Split edges along junctions
  for (i = junctions.length - 1; i >= 0; --i) {
    var junction = junctions[i]
    e = junction[0]

    var edge = edges[e]
    var s = edge[0]
    var t = edge[1]

    // Check if edge is not lexicographically sorted
    var a = floatPoints[s]
    var b = floatPoints[t]
    if (((a[0] - b[0]) || (a[1] - b[1])) < 0) {
      var tmp = s
      s = t
      t = tmp
    }

    // Split leading edge
    edge[0] = s
    var last = edge[1] = junction[1]

    // If we are grouping edges by color, remember to track data
    var color
    if (useColor) {
      color = edge[2]
    }

    // Split other edges
    while (i > 0 && junctions[i - 1][0] === e) {
      var junction = junctions[--i]
      var next = junction[1]
      if (useColor) {
        edges.push([last, next, color])
      } else {
        edges.push([last, next])
      }
      last = next
    }

    // Add final edge
    if (useColor) {
      edges.push([last, t, color])
    } else {
      edges.push([last, t])
    }
  }

  // Return constructed rational points
  return ratPoints
}

// Merge overlapping points
function dedupPoints (floatPoints, ratPoints, floatBounds) {
  var numPoints = ratPoints.length
  var uf = new UnionFind(numPoints)

  // Compute rational bounds
  var bounds = []
  for (var i = 0; i < ratPoints.length; ++i) {
    var p = ratPoints[i]
    var xb = boundRat(p[0])
    var yb = boundRat(p[1])
    bounds.push([
      nextafter(xb[0], -Infinity),
      nextafter(yb[0], -Infinity),
      nextafter(xb[1], Infinity),
      nextafter(yb[1], Infinity)
    ])
  }

  // Link all points with over lapping boxes
  boxIntersect(bounds, function (i, j) {
    uf.link(i, j)
  })

  // Do 1 pass over points to combine points in label sets
  var noDupes = true
  var labels = new Array(numPoints)
  for (var i = 0; i < numPoints; ++i) {
    var j = uf.find(i)
    if (j !== i) {
      // Clear no-dupes flag, zero out label
      noDupes = false
      // Make each point the top-left point from its cell
      floatPoints[j] = [
        Math.min(floatPoints[i][0], floatPoints[j][0]),
        Math.min(floatPoints[i][1], floatPoints[j][1])
      ]
    }
  }

  // If no duplicates, return null to signal termination
  if (noDupes) {
    return null
  }

  var ptr = 0
  for (var i = 0; i < numPoints; ++i) {
    var j = uf.find(i)
    if (j === i) {
      labels[i] = ptr
      floatPoints[ptr++] = floatPoints[i]
    } else {
      labels[i] = -1
    }
  }

  floatPoints.length = ptr

  // Do a second pass to fix up missing labels
  for (var i = 0; i < numPoints; ++i) {
    if (labels[i] < 0) {
      labels[i] = labels[uf.find(i)]
    }
  }

  // Return resulting union-find data structure
  return labels
}

function compareLex2 (a, b) { return (a[0] - b[0]) || (a[1] - b[1]) }
function compareLex3 (a, b) {
  var d = (a[0] - b[0]) || (a[1] - b[1])
  if (d) {
    return d
  }
  if (a[2] < b[2]) {
    return -1
  } else if (a[2] > b[2]) {
    return 1
  }
  return 0
}

// Remove duplicate edge labels
function dedupEdges (edges, labels, useColor) {
  if (edges.length === 0) {
    return
  }
  if (labels) {
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      var a = labels[e[0]]
      var b = labels[e[1]]
      e[0] = Math.min(a, b)
      e[1] = Math.max(a, b)
    }
  } else {
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      var a = e[0]
      var b = e[1]
      e[0] = Math.min(a, b)
      e[1] = Math.max(a, b)
    }
  }
  if (useColor) {
    edges.sort(compareLex3)
  } else {
    edges.sort(compareLex2)
  }
  var ptr = 1
  for (var i = 1; i < edges.length; ++i) {
    var prev = edges[i - 1]
    var next = edges[i]
    if (next[0] === prev[0] && next[1] === prev[1] &&
      (!useColor || next[2] === prev[2])) {
      continue
    }
    edges[ptr++] = next
  }
  edges.length = ptr
}

function preRound (points, edges, useColor) {
  var labels = dedupPoints(points, [], boundPoints(points))
  dedupEdges(edges, labels, useColor)
  return !!labels
}

// Repeat until convergence
function snapRound (points, edges, useColor) {
  // 1. find edge crossings
  var edgeBounds = boundEdges(points, edges)
  var crossings = getCrossings(points, edges, edgeBounds)

  // 2. find t-junctions
  var vertBounds = boundPoints(points)
  var tjunctions = getTJunctions(points, edges, edgeBounds, vertBounds)

  // 3. cut edges, construct rational points
  var ratPoints = cutEdges(points, edges, crossings, tjunctions, useColor)

  // 4. dedupe verts
  var labels = dedupPoints(points, ratPoints, vertBounds)

  // 5. dedupe edges
  dedupEdges(edges, labels, useColor)

  // 6. check termination
  if (!labels) {
    return (crossings.length > 0 || tjunctions.length > 0)
  }

  // More iterations necessary
  return true
}

// Main loop, runs PSLG clean up until completion
function cleanPSLG (points, edges, colors) {
  // If using colors, augment edges with color data
  var prevEdges
  if (colors) {
    prevEdges = edges
    var augEdges = new Array(edges.length)
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      augEdges[i] = [e[0], e[1], colors[i]]
    }
    edges = augEdges
  }

  // First round: remove duplicate edges and points
  var modified = preRound(points, edges, !!colors)

  // Run snap rounding until convergence
  while (snapRound(points, edges, !!colors)) {
    modified = true
  }

  // Strip color tags
  if (!!colors && modified) {
    prevEdges.length = 0
    colors.length = 0
    for (var i = 0; i < edges.length; ++i) {
      var e = edges[i]
      prevEdges.push([e[0], e[1]])
      colors.push(e[2])
    }
  }

  return modified
}

},{"./lib/rat-seg-intersect":59,"big-rat":19,"big-rat/cmp":17,"big-rat/to-float":31,"box-intersect":36,"nextafter":444,"rat-vec":931,"robust-segment-intersect":957,"union-find":993}],59:[function(require,module,exports){
'use strict'

module.exports = solveIntersection

var ratMul = require('big-rat/mul')
var ratDiv = require('big-rat/div')
var ratSub = require('big-rat/sub')
var ratSign = require('big-rat/sign')
var rvSub = require('rat-vec/sub')
var rvAdd = require('rat-vec/add')
var rvMuls = require('rat-vec/muls')

function ratPerp (a, b) {
  return ratSub(ratMul(a[0], b[1]), ratMul(a[1], b[0]))
}

// Solve for intersection
//  x = a + t (b-a)
//  (x - c) ^ (d-c) = 0
//  (t * (b-a) + (a-c) ) ^ (d-c) = 0
//  t * (b-a)^(d-c) = (d-c)^(a-c)
//  t = (d-c)^(a-c) / (b-a)^(d-c)

function solveIntersection (a, b, c, d) {
  var ba = rvSub(b, a)
  var dc = rvSub(d, c)

  var baXdc = ratPerp(ba, dc)

  if (ratSign(baXdc) === 0) {
    return null
  }

  var ac = rvSub(a, c)
  var dcXac = ratPerp(dc, ac)

  var t = ratDiv(dcXac, baXdc)
  var s = rvMuls(ba, t)
  var r = rvAdd(a, s)

  return r
}

},{"big-rat/div":18,"big-rat/mul":28,"big-rat/sign":29,"big-rat/sub":30,"rat-vec/add":930,"rat-vec/muls":932,"rat-vec/sub":933}],60:[function(require,module,exports){
(function (Buffer){
var clone = (function() {
'use strict';

/**
 * Clones (copies) an Object using deep copying.
 *
 * This function supports circular references by default, but if you are certain
 * there are no circular references in your object, you can save some CPU time
 * by calling clone(obj, false).
 *
 * Caution: if `circular` is false and `parent` contains circular references,
 * your program may enter an infinite loop and crash.
 *
 * @param `parent` - the object to be cloned
 * @param `circular` - set to true if the object to be cloned may contain
 *    circular references. (optional - true by default)
 * @param `depth` - set to a number if the object is only to be cloned to
 *    a particular depth. (optional - defaults to Infinity)
 * @param `prototype` - sets the prototype to be used when cloning an object.
 *    (optional - defaults to parent prototype).
*/
function clone(parent, circular, depth, prototype) {
  var filter;
  if (typeof circular === 'object') {
    depth = circular.depth;
    prototype = circular.prototype;
    filter = circular.filter;
    circular = circular.circular
  }
  // maintain two arrays for circular references, where corresponding parents
  // and children have the same index
  var allParents = [];
  var allChildren = [];

  var useBuffer = typeof Buffer != 'undefined';

  if (typeof circular == 'undefined')
    circular = true;

  if (typeof depth == 'undefined')
    depth = Infinity;

  // recurse this function so we don't reset allParents and allChildren
  function _clone(parent, depth) {
    // cloning null always returns null
    if (parent === null)
      return null;

    if (depth == 0)
      return parent;

    var child;
    var proto;
    if (typeof parent != 'object') {
      return parent;
    }

    if (clone.__isArray(parent)) {
      child = [];
    } else if (clone.__isRegExp(parent)) {
      child = new RegExp(parent.source, __getRegExpFlags(parent));
      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
    } else if (clone.__isDate(parent)) {
      child = new Date(parent.getTime());
    } else if (useBuffer && Buffer.isBuffer(parent)) {
      child = new Buffer(parent.length);
      parent.copy(child);
      return child;
    } else {
      if (typeof prototype == 'undefined') {
        proto = Object.getPrototypeOf(parent);
        child = Object.create(proto);
      }
      else {
        child = Object.create(prototype);
        proto = prototype;
      }
    }

    if (circular) {
      var index = allParents.indexOf(parent);

      if (index != -1) {
        return allChildren[index];
      }
      allParents.push(parent);
      allChildren.push(child);
    }

    for (var i in parent) {
      var attrs;
      if (proto) {
        attrs = Object.getOwnPropertyDescriptor(proto, i);
      }

      if (attrs && attrs.set == null) {
        continue;
      }
      child[i] = _clone(parent[i], depth - 1);
    }

    return child;
  }

  return _clone(parent, depth);
}

/**
 * Simple flat clone using prototype, accepts only objects, usefull for property
 * override on FLAT configuration object (no nested props).
 *
 * USE WITH CAUTION! This may not behave as you wish if you do not know how this
 * works.
 */
clone.clonePrototype = function clonePrototype(parent) {
  if (parent === null)
    return null;

  var c = function () {};
  c.prototype = parent;
  return new c();
};

// private utility functions

function __objToStr(o) {
  return Object.prototype.toString.call(o);
};
clone.__objToStr = __objToStr;

function __isDate(o) {
  return typeof o === 'object' && __objToStr(o) === '[object Date]';
};
clone.__isDate = __isDate;

function __isArray(o) {
  return typeof o === 'object' && __objToStr(o) === '[object Array]';
};
clone.__isArray = __isArray;

function __isRegExp(o) {
  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
};
clone.__isRegExp = __isRegExp;

function __getRegExpFlags(re) {
  var flags = '';
  if (re.global) flags += 'g';
  if (re.ignoreCase) flags += 'i';
  if (re.multiline) flags += 'm';
  return flags;
};
clone.__getRegExpFlags = __getRegExpFlags;

return clone;
})();

if (typeof module === 'object' && module.exports) {
  module.exports = clone;
}

}).call(this,require("buffer").Buffer)
},{"buffer":46}],61:[function(require,module,exports){
module.exports={
	"jet":[{"index":0,"rgb":[0,0,131]},{"index":0.125,"rgb":[0,60,170]},{"index":0.375,"rgb":[5,255,255]},{"index":0.625,"rgb":[255,255,0]},{"index":0.875,"rgb":[250,0,0]},{"index":1,"rgb":[128,0,0]}],

	"hsv":[{"index":0,"rgb":[255,0,0]},{"index":0.169,"rgb":[253,255,2]},{"index":0.173,"rgb":[247,255,2]},{"index":0.337,"rgb":[0,252,4]},{"index":0.341,"rgb":[0,252,10]},{"index":0.506,"rgb":[1,249,255]},{"index":0.671,"rgb":[2,0,253]},{"index":0.675,"rgb":[8,0,253]},{"index":0.839,"rgb":[255,0,251]},{"index":0.843,"rgb":[255,0,245]},{"index":1,"rgb":[255,0,6]}],

	"hot":[{"index":0,"rgb":[0,0,0]},{"index":0.3,"rgb":[230,0,0]},{"index":0.6,"rgb":[255,210,0]},{"index":1,"rgb":[255,255,255]}],

	"cool":[{"index":0,"rgb":[0,255,255]},{"index":1,"rgb":[255,0,255]}],

	"spring":[{"index":0,"rgb":[255,0,255]},{"index":1,"rgb":[255,255,0]}],

	"summer":[{"index":0,"rgb":[0,128,102]},{"index":1,"rgb":[255,255,102]}],

	"autumn":[{"index":0,"rgb":[255,0,0]},{"index":1,"rgb":[255,255,0]}],

	"winter":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[0,255,128]}],

	"bone":[{"index":0,"rgb":[0,0,0]},{"index":0.376,"rgb":[84,84,116]},{"index":0.753,"rgb":[169,200,200]},{"index":1,"rgb":[255,255,255]}],

	"copper":[{"index":0,"rgb":[0,0,0]},{"index":0.804,"rgb":[255,160,102]},{"index":1,"rgb":[255,199,127]}],

	"greys":[{"index":0,"rgb":[0,0,0]},{"index":1,"rgb":[255,255,255]}],

	"yignbu":[{"index":0,"rgb":[8,29,88]},{"index":0.125,"rgb":[37,52,148]},{"index":0.25,"rgb":[34,94,168]},{"index":0.375,"rgb":[29,145,192]},{"index":0.5,"rgb":[65,182,196]},{"index":0.625,"rgb":[127,205,187]},{"index":0.75,"rgb":[199,233,180]},{"index":0.875,"rgb":[237,248,217]},{"index":1,"rgb":[255,255,217]}],

	"greens":[{"index":0,"rgb":[0,68,27]},{"index":0.125,"rgb":[0,109,44]},{"index":0.25,"rgb":[35,139,69]},{"index":0.375,"rgb":[65,171,93]},{"index":0.5,"rgb":[116,196,118]},{"index":0.625,"rgb":[161,217,155]},{"index":0.75,"rgb":[199,233,192]},{"index":0.875,"rgb":[229,245,224]},{"index":1,"rgb":[247,252,245]}],

	"yiorrd":[{"index":0,"rgb":[128,0,38]},{"index":0.125,"rgb":[189,0,38]},{"index":0.25,"rgb":[227,26,28]},{"index":0.375,"rgb":[252,78,42]},{"index":0.5,"rgb":[253,141,60]},{"index":0.625,"rgb":[254,178,76]},{"index":0.75,"rgb":[254,217,118]},{"index":0.875,"rgb":[255,237,160]},{"index":1,"rgb":[255,255,204]}],

	"bluered":[{"index":0,"rgb":[0,0,255]},{"index":1,"rgb":[255,0,0]}],

	"rdbu":[{"index":0,"rgb":[5,10,172]},{"index":0.35,"rgb":[106,137,247]},{"index":0.5,"rgb":[190,190,190]},{"index":0.6,"rgb":[220,170,132]},{"index":0.7,"rgb":[230,145,90]},{"index":1,"rgb":[178,10,28]}],

	"picnic":[{"index":0,"rgb":[0,0,255]},{"index":0.1,"rgb":[51,153,255]},{"index":0.2,"rgb":[102,204,255]},{"index":0.3,"rgb":[153,204,255]},{"index":0.4,"rgb":[204,204,255]},{"index":0.5,"rgb":[255,255,255]},{"index":0.6,"rgb":[255,204,255]},{"index":0.7,"rgb":[255,153,255]},{"index":0.8,"rgb":[255,102,204]},{"index":0.9,"rgb":[255,102,102]},{"index":1,"rgb":[255,0,0]}],

	"rainbow":[{"index":0,"rgb":[150,0,90]},{"index":0.125,"rgb":[0,0,200]},{"index":0.25,"rgb":[0,25,255]},{"index":0.375,"rgb":[0,152,255]},{"index":0.5,"rgb":[44,255,150]},{"index":0.625,"rgb":[151,255,0]},{"index":0.75,"rgb":[255,234,0]},{"index":0.875,"rgb":[255,111,0]},{"index":1,"rgb":[255,0,0]}],

	"portland":[{"index":0,"rgb":[12,51,131]},{"index":0.25,"rgb":[10,136,186]},{"index":0.5,"rgb":[242,211,56]},{"index":0.75,"rgb":[242,143,56]},{"index":1,"rgb":[217,30,30]}],

	"blackbody":[{"index":0,"rgb":[0,0,0]},{"index":0.2,"rgb":[230,0,0]},{"index":0.4,"rgb":[230,210,0]},{"index":0.7,"rgb":[255,255,255]},{"index":1,"rgb":[160,200,255]}],

	"earth":[{"index":0,"rgb":[0,0,130]},{"index":0.1,"rgb":[0,180,180]},{"index":0.2,"rgb":[40,210,40]},{"index":0.4,"rgb":[230,230,50]},{"index":0.6,"rgb":[120,70,20]},{"index":1,"rgb":[255,255,255]}],

	"electric":[{"index":0,"rgb":[0,0,0]},{"index":0.15,"rgb":[30,0,100]},{"index":0.4,"rgb":[120,0,100]},{"index":0.6,"rgb":[160,90,0]},{"index":0.8,"rgb":[230,200,0]},{"index":1,"rgb":[255,250,220]}],

	"alpha": [{"index":0, "rgb": [255,255,255,0]},{"index":0, "rgb": [255,255,255,1]}],

	"viridis": [{"index":0,"rgb":[68,1,84]},{"index":0.13,"rgb":[71,44,122]},{"index":0.25,"rgb":[59,81,139]},{"index":0.38,"rgb":[44,113,142]},{"index":0.5,"rgb":[33,144,141]},{"index":0.63,"rgb":[39,173,129]},{"index":0.75,"rgb":[92,200,99]},{"index":0.88,"rgb":[170,220,50]},{"index":1,"rgb":[253,231,37]}],

	"inferno": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[31,12,72]},{"index":0.25,"rgb":[85,15,109]},{"index":0.38,"rgb":[136,34,106]},{"index":0.5,"rgb":[186,54,85]},{"index":0.63,"rgb":[227,89,51]},{"index":0.75,"rgb":[249,140,10]},{"index":0.88,"rgb":[249,201,50]},{"index":1,"rgb":[252,255,164]}],

	"magma": [{"index":0,"rgb":[0,0,4]},{"index":0.13,"rgb":[28,16,68]},{"index":0.25,"rgb":[79,18,123]},{"index":0.38,"rgb":[129,37,129]},{"index":0.5,"rgb":[181,54,122]},{"index":0.63,"rgb":[229,80,100]},{"index":0.75,"rgb":[251,135,97]},{"index":0.88,"rgb":[254,194,135]},{"index":1,"rgb":[252,253,191]}],

	"plasma": [{"index":0,"rgb":[13,8,135]},{"index":0.13,"rgb":[75,3,161]},{"index":0.25,"rgb":[125,3,168]},{"index":0.38,"rgb":[168,34,150]},{"index":0.5,"rgb":[203,70,121]},{"index":0.63,"rgb":[229,107,93]},{"index":0.75,"rgb":[248,148,65]},{"index":0.88,"rgb":[253,195,40]},{"index":1,"rgb":[240,249,33]}],

	"warm": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[172,0,187]},{"index":0.25,"rgb":[219,0,170]},{"index":0.38,"rgb":[255,0,130]},{"index":0.5,"rgb":[255,63,74]},{"index":0.63,"rgb":[255,123,0]},{"index":0.75,"rgb":[234,176,0]},{"index":0.88,"rgb":[190,228,0]},{"index":1,"rgb":[147,255,0]}],

	"cool": [{"index":0,"rgb":[125,0,179]},{"index":0.13,"rgb":[116,0,218]},{"index":0.25,"rgb":[98,74,237]},{"index":0.38,"rgb":[68,146,231]},{"index":0.5,"rgb":[0,204,197]},{"index":0.63,"rgb":[0,247,146]},{"index":0.75,"rgb":[0,255,88]},{"index":0.88,"rgb":[40,255,8]},{"index":1,"rgb":[147,255,0]}],

	"rainbow-soft": [{"index":0,"rgb":[125,0,179]},{"index":0.1,"rgb":[199,0,180]},{"index":0.2,"rgb":[255,0,121]},{"index":0.3,"rgb":[255,108,0]},{"index":0.4,"rgb":[222,194,0]},{"index":0.5,"rgb":[150,255,0]},{"index":0.6,"rgb":[0,255,55]},{"index":0.7,"rgb":[0,246,150]},{"index":0.8,"rgb":[50,167,222]},{"index":0.9,"rgb":[103,51,235]},{"index":1,"rgb":[124,0,186]}],

	"bathymetry": [{"index":0,"rgb":[40,26,44]},{"index":0.13,"rgb":[59,49,90]},{"index":0.25,"rgb":[64,76,139]},{"index":0.38,"rgb":[63,110,151]},{"index":0.5,"rgb":[72,142,158]},{"index":0.63,"rgb":[85,174,163]},{"index":0.75,"rgb":[120,206,163]},{"index":0.88,"rgb":[187,230,172]},{"index":1,"rgb":[253,254,204]}],

	"cdom": [{"index":0,"rgb":[47,15,62]},{"index":0.13,"rgb":[87,23,86]},{"index":0.25,"rgb":[130,28,99]},{"index":0.38,"rgb":[171,41,96]},{"index":0.5,"rgb":[206,67,86]},{"index":0.63,"rgb":[230,106,84]},{"index":0.75,"rgb":[242,149,103]},{"index":0.88,"rgb":[249,193,135]},{"index":1,"rgb":[254,237,176]}],

	"chlorophyll": [{"index":0,"rgb":[18,36,20]},{"index":0.13,"rgb":[25,63,41]},{"index":0.25,"rgb":[24,91,59]},{"index":0.38,"rgb":[13,119,72]},{"index":0.5,"rgb":[18,148,80]},{"index":0.63,"rgb":[80,173,89]},{"index":0.75,"rgb":[132,196,122]},{"index":0.88,"rgb":[175,221,162]},{"index":1,"rgb":[215,249,208]}],

	"density": [{"index":0,"rgb":[54,14,36]},{"index":0.13,"rgb":[89,23,80]},{"index":0.25,"rgb":[110,45,132]},{"index":0.38,"rgb":[120,77,178]},{"index":0.5,"rgb":[120,113,213]},{"index":0.63,"rgb":[115,151,228]},{"index":0.75,"rgb":[134,185,227]},{"index":0.88,"rgb":[177,214,227]},{"index":1,"rgb":[230,241,241]}],

	"freesurface-blue": [{"index":0,"rgb":[30,4,110]},{"index":0.13,"rgb":[47,14,176]},{"index":0.25,"rgb":[41,45,236]},{"index":0.38,"rgb":[25,99,212]},{"index":0.5,"rgb":[68,131,200]},{"index":0.63,"rgb":[114,156,197]},{"index":0.75,"rgb":[157,181,203]},{"index":0.88,"rgb":[200,208,216]},{"index":1,"rgb":[241,237,236]}],

	"freesurface-red": [{"index":0,"rgb":[60,9,18]},{"index":0.13,"rgb":[100,17,27]},{"index":0.25,"rgb":[142,20,29]},{"index":0.38,"rgb":[177,43,27]},{"index":0.5,"rgb":[192,87,63]},{"index":0.63,"rgb":[205,125,105]},{"index":0.75,"rgb":[216,162,148]},{"index":0.88,"rgb":[227,199,193]},{"index":1,"rgb":[241,237,236]}],

	"oxygen": [{"index":0,"rgb":[64,5,5]},{"index":0.13,"rgb":[106,6,15]},{"index":0.25,"rgb":[144,26,7]},{"index":0.38,"rgb":[168,64,3]},{"index":0.5,"rgb":[188,100,4]},{"index":0.63,"rgb":[206,136,11]},{"index":0.75,"rgb":[220,174,25]},{"index":0.88,"rgb":[231,215,44]},{"index":1,"rgb":[248,254,105]}],

	"par": [{"index":0,"rgb":[51,20,24]},{"index":0.13,"rgb":[90,32,35]},{"index":0.25,"rgb":[129,44,34]},{"index":0.38,"rgb":[159,68,25]},{"index":0.5,"rgb":[182,99,19]},{"index":0.63,"rgb":[199,134,22]},{"index":0.75,"rgb":[212,171,35]},{"index":0.88,"rgb":[221,210,54]},{"index":1,"rgb":[225,253,75]}],

	"phase": [{"index":0,"rgb":[145,105,18]},{"index":0.13,"rgb":[184,71,38]},{"index":0.25,"rgb":[186,58,115]},{"index":0.38,"rgb":[160,71,185]},{"index":0.5,"rgb":[110,97,218]},{"index":0.63,"rgb":[50,123,164]},{"index":0.75,"rgb":[31,131,110]},{"index":0.88,"rgb":[77,129,34]},{"index":1,"rgb":[145,105,18]}],

	"salinity": [{"index":0,"rgb":[42,24,108]},{"index":0.13,"rgb":[33,50,162]},{"index":0.25,"rgb":[15,90,145]},{"index":0.38,"rgb":[40,118,137]},{"index":0.5,"rgb":[59,146,135]},{"index":0.63,"rgb":[79,175,126]},{"index":0.75,"rgb":[120,203,104]},{"index":0.88,"rgb":[193,221,100]},{"index":1,"rgb":[253,239,154]}],

	"temperature": [{"index":0,"rgb":[4,35,51]},{"index":0.13,"rgb":[23,51,122]},{"index":0.25,"rgb":[85,59,157]},{"index":0.38,"rgb":[129,79,143]},{"index":0.5,"rgb":[175,95,130]},{"index":0.63,"rgb":[222,112,101]},{"index":0.75,"rgb":[249,146,66]},{"index":0.88,"rgb":[249,196,65]},{"index":1,"rgb":[232,250,91]}],

	"turbidity": [{"index":0,"rgb":[34,31,27]},{"index":0.13,"rgb":[65,50,41]},{"index":0.25,"rgb":[98,69,52]},{"index":0.38,"rgb":[131,89,57]},{"index":0.5,"rgb":[161,112,59]},{"index":0.63,"rgb":[185,140,66]},{"index":0.75,"rgb":[202,174,88]},{"index":0.88,"rgb":[216,209,126]},{"index":1,"rgb":[233,246,171]}],

	"velocity-blue": [{"index":0,"rgb":[17,32,64]},{"index":0.13,"rgb":[35,52,116]},{"index":0.25,"rgb":[29,81,156]},{"index":0.38,"rgb":[31,113,162]},{"index":0.5,"rgb":[50,144,169]},{"index":0.63,"rgb":[87,173,176]},{"index":0.75,"rgb":[149,196,189]},{"index":0.88,"rgb":[203,221,211]},{"index":1,"rgb":[254,251,230]}],

	"velocity-green": [{"index":0,"rgb":[23,35,19]},{"index":0.13,"rgb":[24,64,38]},{"index":0.25,"rgb":[11,95,45]},{"index":0.38,"rgb":[39,123,35]},{"index":0.5,"rgb":[95,146,12]},{"index":0.63,"rgb":[152,165,18]},{"index":0.75,"rgb":[201,186,69]},{"index":0.88,"rgb":[233,216,137]},{"index":1,"rgb":[255,253,205]}],

	"cubehelix": [{"index":0,"rgb":[0,0,0]},{"index":0.07,"rgb":[22,5,59]},{"index":0.13,"rgb":[60,4,105]},{"index":0.2,"rgb":[109,1,135]},{"index":0.27,"rgb":[161,0,147]},{"index":0.33,"rgb":[210,2,142]},{"index":0.4,"rgb":[251,11,123]},{"index":0.47,"rgb":[255,29,97]},{"index":0.53,"rgb":[255,54,69]},{"index":0.6,"rgb":[255,85,46]},{"index":0.67,"rgb":[255,120,34]},{"index":0.73,"rgb":[255,157,37]},{"index":0.8,"rgb":[241,191,57]},{"index":0.87,"rgb":[224,220,93]},{"index":0.93,"rgb":[218,241,142]},{"index":1,"rgb":[227,253,198]}]
};

},{}],62:[function(require,module,exports){
/*
 * Ben Postlethwaite
 * January 2013
 * License MIT
 */
'use strict';

var at = require('arraytools');
var clone = require('clone');
var colorScale = require('./colorScales');

module.exports = createColormap;

function createColormap (spec) {
    /*
     * Default Options
     */
    var indicies, rgba, fromrgba, torgba,
        nsteps, cmap, colormap, format,
        nshades, colors, alpha, index, i,
        r = [],
        g = [],
        b = [],
        a = [];

    if ( !at.isPlainObject(spec) ) spec = {};

    nshades = spec.nshades || 72;
    format = spec.format || 'hex';

    colormap = spec.colormap;
    if (!colormap) colormap = 'jet';

    if (typeof colormap === 'string') {
        colormap = colormap.toLowerCase();

        if (!colorScale[colormap]) {
            throw Error(colormap + ' not a supported colorscale');
        }

        cmap = clone(colorScale[colormap]);

    } else if (Array.isArray(colormap)) {
        cmap = clone(colormap);

    } else {
        throw Error('unsupported colormap option', colormap);
    }

    if (cmap.length > nshades) {
        throw new Error(
            colormap+' map requires nshades to be at least size '+cmap.length
        );
    }

    if (!Array.isArray(spec.alpha)) {

        if (typeof spec.alpha === 'number') {
            alpha = [spec.alpha, spec.alpha];

        } else {
            alpha = [1, 1];
        }

    } else if (spec.alpha.length !== 2) {
        alpha = [1, 1];

    } else {
        alpha = clone(spec.alpha);
    }

    /*
     * map index points from 0->1 to 0 -> n-1
     */
    indicies = cmap.map(function(c) {
        return Math.round(c.index * nshades);
    });

    /*
     * Add alpha channel to the map
     */
    if (alpha[0] < 0) alpha[0] = 0;
    if (alpha[1] < 0) alpha[0] = 0;
    if (alpha[0] > 1) alpha[0] = 1;
    if (alpha[1] > 1) alpha[0] = 1;

    for (i = 0; i < indicies.length; ++i) {
        index = cmap[i].index;
        rgba = cmap[i].rgb;

        // if user supplies their own map use it
        if (rgba.length === 4 && rgba[3] >= 0 && rgba[3] <= 1) continue;
        rgba[3] = alpha[0] + (alpha[1] - alpha[0])*index;
    }

    /*
     * map increasing linear values between indicies to
     * linear steps in colorvalues
     */
    for (i = 0; i < indicies.length-1; ++i) {
        nsteps = indicies[i+1] - indicies[i];
        fromrgba = cmap[i].rgb;
        torgba = cmap[i+1].rgb;
        r = r.concat(at.linspace(fromrgba[0], torgba[0], nsteps ) );
        g = g.concat(at.linspace(fromrgba[1], torgba[1], nsteps ) );
        b = b.concat(at.linspace(fromrgba[2], torgba[2], nsteps ) );
        a = a.concat(at.linspace(fromrgba[3], torgba[3], nsteps ) );
    }

    r = r.map( Math.round );
    g = g.map( Math.round );
    b = b.map( Math.round );

    colors = at.zip(r, g, b, a);

    if (format === 'hex') colors = colors.map( rgb2hex );
    if (format === 'rgbaString') colors = colors.map( rgbaStr );

    return colors;
};


function rgb2hex (rgba) {
    var dig, hex = '#';
    for (var i = 0; i < 3; ++i) {
        dig = rgba[i];
        dig = dig.toString(16);
        hex += ('00' + dig).substr( dig.length );
    }
    return hex;
}

function rgbaStr (rgba) {
    return 'rgba(' + rgba.join(',') + ')';
}

},{"./colorScales":61,"arraytools":8,"clone":60}],63:[function(require,module,exports){
"use strict"

module.exports = compareAngle

var orient = require("robust-orientation")
var sgn = require("signum")
var twoSum = require("two-sum")
var robustProduct = require("robust-product")
var robustSum = require("robust-sum")

function testInterior(a, b, c) {
  var x0 = twoSum(a[0], -b[0])
  var y0 = twoSum(a[1], -b[1])
  var x1 = twoSum(c[0], -b[0])
  var y1 = twoSum(c[1], -b[1])

  var d = robustSum(
    robustProduct(x0, x1),
    robustProduct(y0, y1))

  return d[d.length-1] >= 0
}

function compareAngle(a, b, c, d) {
  var bcd = orient(b, c, d)
  if(bcd === 0) {
    //Handle degenerate cases
    var sabc = sgn(orient(a, b, c))
    var sabd = sgn(orient(a, b, d))
    if(sabc === sabd) {
      if(sabc === 0) {
        var ic = testInterior(a, b, c)
        var id = testInterior(a, b, d)
        if(ic === id) {
          return 0
        } else if(ic) {
          return 1
        } else {
          return -1
        }
      }
      return 0
    } else if(sabd === 0) {
      if(sabc > 0) {
        return -1
      } else if(testInterior(a, b, d)) {
        return -1
      } else {
        return 1
      }
    } else if(sabc === 0) {
      if(sabd > 0) {
        return 1
      } else if(testInterior(a, b, c)) {
        return 1
      } else {
        return -1
      }
    }
    return sgn(sabd - sabc)
  }
  var abc = orient(a, b, c)
  if(abc > 0) {
    if(bcd > 0 && orient(a, b, d) > 0) {
      return 1
    }
    return -1
  } else if(abc < 0) {
    if(bcd > 0 || orient(a, b, d) > 0) {
      return 1
    }
    return -1
  } else {
    var abd = orient(a, b, d)
    if(abd > 0) {
      return 1
    } else {
      if(testInterior(a, b, c)) {
        return 1
      } else {
        return -1
      }
    }
  }
}
},{"robust-orientation":954,"robust-product":955,"robust-sum":959,"signum":965,"two-sum":991}],64:[function(require,module,exports){
module.exports = compareCells

var min = Math.min

function compareInt(a, b) {
  return a - b
}

function compareCells(a, b) {
  var n = a.length
    , t = a.length - b.length
  if(t) {
    return t
  }
  switch(n) {
    case 0:
      return 0
    case 1:
      return a[0] - b[0]
    case 2:
      return (a[0]+a[1]-b[0]-b[1]) ||
             min(a[0],a[1]) - min(b[0],b[1])
    case 3:
      var l1 = a[0]+a[1]
        , m1 = b[0]+b[1]
      t = l1+a[2] - (m1+b[2])
      if(t) {
        return t
      }
      var l0 = min(a[0], a[1])
        , m0 = min(b[0], b[1])
      return min(l0, a[2]) - min(m0, b[2]) ||
             min(l0+a[2], l1) - min(m0+b[2], m1)
    case 4:
      var aw=a[0], ax=a[1], ay=a[2], az=a[3]
        , bw=b[0], bx=b[1], by=b[2], bz=b[3]
      return (aw+ax+ay+az)-(bw+bx+by+bz) ||
             min(aw,ax,ay,az)-min(bw,bx,by,bz,bw) ||
             min(aw+ax,aw+ay,aw+az,ax+ay,ax+az,ay+az) -
               min(bw+bx,bw+by,bw+bz,bx+by,bx+bz,by+bz) ||
             min(aw+ax+ay,aw+ax+az,aw+ay+az,ax+ay+az) -
               min(bw+bx+by,bw+bx+bz,bw+by+bz,bx+by+bz)
    default:
      var as = a.slice().sort(compareInt)
      var bs = b.slice().sort(compareInt)
      for(var i=0; i<n; ++i) {
        t = as[i] - bs[i]
        if(t) {
          return t
        }
      }
      return 0
  }
}

},{}],65:[function(require,module,exports){
'use strict'

var compareCells = require('compare-cell')
var parity = require('cell-orientation')

module.exports = compareOrientedCells

function compareOrientedCells(a, b) {
  return compareCells(a, b) || parity(a) - parity(b)
}

},{"cell-orientation":55,"compare-cell":64}],66:[function(require,module,exports){
(function (Buffer){
/**!
 * contentstream - index.js
 *
 * Copyright(c) fengmk2 and other contributors.
 * MIT Licensed
 *
 * Authors:
 *   fengmk2 <fengmk2@gmail.com> (http://fengmk2.github.com)
 */

'use strict';

/**
 * Module dependencies.
 */

var Readable = require('readable-stream').Readable;
var util = require('util');

module.exports = ContentStream;

function ContentStream(obj, options) {
  if (!(this instanceof ContentStream)) {
    return new ContentStream(obj, options);
  }
  Readable.call(this, options);
  if (obj === null || obj === undefined) {
    obj = String(obj);
  }
  this._obj = obj;
}

util.inherits(ContentStream, Readable);

ContentStream.prototype._read = function (n) {
  var obj = this._obj;
  if (typeof obj === 'string') {
    this.push(new Buffer(obj));
  } else if (Buffer.isBuffer(obj)) {
    this.push(obj);
  } else {
    this.push(new Buffer(JSON.stringify(obj)));
  }
  this.push(null);
};

}).call(this,require("buffer").Buffer)
},{"buffer":46,"readable-stream":73,"util":1001}],67:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],68:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

module.exports = Duplex;

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

forEach(objectKeys(Writable.prototype), function(method) {
  if (!Duplex.prototype[method])
    Duplex.prototype[method] = Writable.prototype[method];
});

function Duplex(options) {
  if (!(this instanceof Duplex))
    return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false)
    this.readable = false;

  if (options && options.writable === false)
    this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false)
    this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended)
    return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  process.nextTick(this.end.bind(this));
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

}).call(this,require('_process'))
},{"./_stream_readable":70,"./_stream_writable":72,"_process":923,"core-util-is":78,"inherits":266}],69:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough))
    return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function(chunk, encoding, cb) {
  cb(null, chunk);
};

},{"./_stream_transform":71,"core-util-is":78,"inherits":266}],70:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events').EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require('stream');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var StringDecoder;

util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  options = options || {};

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = false;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // In streams that never have any data, and do push(null) right away,
  // the consumer can miss the 'end' event if they do some I/O before
  // consuming the stream.  So, we don't emit('end') until some reading
  // happens.
  this.calledRead = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;


  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (typeof chunk === 'string' && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null || chunk === undefined) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      // update the buffer info.
      state.length += state.objectMode ? 1 : chunk.length;
      if (addToFront) {
        state.buffer.unshift(chunk);
      } else {
        state.reading = false;
        state.buffer.push(chunk);
      }

      if (state.needReadable)
        emitReadable(stream);

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  var state = this._readableState;
  state.calledRead = true;
  var nOrig = n;
  var ret;

  if (typeof n !== 'number' || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    ret = null;

    // In cases where the decoder did not receive enough data
    // to produce a full chunk, then immediately received an
    // EOF, state.buffer will contain [<Buffer >, <Buffer 00 ...>].
    // howMuchToRead will see this and coerce the amount to
    // read to zero (because it's looking at the length of the
    // first <Buffer > in state.buffer), and we'll end up here.
    //
    // This can only happen via state.decoder -- no other venue
    // exists for pushing a zero-length chunk into state.buffer
    // and triggering this behavior. In this case, we return our
    // remaining data and end the stream, if appropriate.
    if (state.length > 0 && state.decoder) {
      ret = fromList(n, state);
      state.length -= ret.length;
    }

    if (state.length === 0)
      endReadable(this);

    return ret;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;

  // if we currently have less than the highWaterMark, then also read some
  if (state.length - n <= state.highWaterMark)
    doRead = true;

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading)
    doRead = false;

  if (doRead) {
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read called its callback synchronously, then `reading`
  // will be false, and we need to re-evaluate how much data we
  // can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we happened to read() exactly the remaining amount in the
  // buffer, and the EOF has been seen at this point, then make sure
  // that we emit 'end' on the very next tick.
  if (state.ended && !state.endEmitted && state.length === 0)
    endReadable(this);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // if we've ended and we have some data left, then emit
  // 'readable' now to make sure it gets picked up.
  if (state.length > 0)
    emitReadable(stream);
  else
    endReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (state.emittedReadable)
    return;

  state.emittedReadable = true;
  if (state.sync)
    process.nextTick(function() {
      emitReadable_(stream);
    });
  else
    emitReadable_(stream);
}

function emitReadable_(stream) {
  stream.emit('readable');
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    if (readable !== src) return;
    cleanup();
  }

  function onend() {
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  function cleanup() {
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (!dest._writableState || dest._writableState.needDrain)
      ondrain();
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    // the handler that waits for readable events after all
    // the data gets sucked out in flow.
    // This would be easier to follow with a .once() handler
    // in flow(), but that is too slow.
    this.on('readable', pipeOnReadable);

    state.flowing = true;
    process.nextTick(function() {
      flow(src);
    });
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var dest = this;
    var state = src._readableState;
    state.awaitDrain--;
    if (state.awaitDrain === 0)
      flow(src);
  };
}

function flow(src) {
  var state = src._readableState;
  var chunk;
  state.awaitDrain = 0;

  function write(dest, i, list) {
    var written = dest.write(chunk);
    if (false === written) {
      state.awaitDrain++;
    }
  }

  while (state.pipesCount && null !== (chunk = src.read())) {

    if (state.pipesCount === 1)
      write(state.pipes, 0, null);
    else
      forEach(state.pipes, write);

    src.emit('data', chunk);

    // if anyone needs a drain, then we have to wait for that.
    if (state.awaitDrain > 0)
      return;
  }

  // if every destination was unpiped, either before entering this
  // function, or in the while loop, then stop flowing.
  //
  // NB: This is a pretty rare edge case.
  if (state.pipesCount === 0) {
    state.flowing = false;

    // if there were data event listeners added, then switch to old mode.
    if (EE.listenerCount(src, 'data') > 0)
      emitDataEvents(src);
    return;
  }

  // at this point, no one needed a drain, so we just ran out of data
  // on the next readable event, start it over again.
  state.ranOut = true;
}

function pipeOnReadable() {
  if (this._readableState.ranOut) {
    this._readableState.ranOut = false;
    flow(this);
  }
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    this.removeListener('readable', pipeOnReadable);
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data' && !this._readableState.flowing)
    emitDataEvents(this);

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        this.read(0);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  emitDataEvents(this);
  this.read(0);
  this.emit('resume');
};

Readable.prototype.pause = function() {
  emitDataEvents(this, true);
  this.emit('pause');
};

function emitDataEvents(stream, startPaused) {
  var state = stream._readableState;

  if (state.flowing) {
    // https://github.com/isaacs/readable-stream/issues/16
    throw new Error('Cannot switch to old mode now.');
  }

  var paused = startPaused || false;
  var readable = false;

  // convert to an old-style stream.
  stream.readable = true;
  stream.pipe = Stream.prototype.pipe;
  stream.on = stream.addListener = Stream.prototype.on;

  stream.on('readable', function() {
    readable = true;

    var c;
    while (!paused && (null !== (c = stream.read())))
      stream.emit('data', c);

    if (c === null) {
      readable = false;
      stream._readableState.needReadable = true;
    }
  });

  stream.pause = function() {
    paused = true;
    this.emit('pause');
  };

  stream.resume = function() {
    paused = false;
    if (readable)
      process.nextTick(function() {
        stream.emit('readable');
      });
    else
      this.read(0);
    this.emit('resume');
  };

  // now make it start, just in case it hadn't already.
  stream.emit('readable');
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    if (state.decoder)
      chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    //if (state.objectMode && util.isNullOrUndefined(chunk))
    if (state.objectMode && (chunk === null || chunk === undefined))
      return;
    else if (!state.objectMode && (!chunk || !chunk.length))
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (typeof stream[i] === 'function' &&
        typeof this[i] === 'undefined') {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};



// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0)
    throw new Error('endReadable called on non-empty stream');

  if (!state.endEmitted && state.calledRead) {
    state.ended = true;
    process.nextTick(function() {
      // Check that we didn't get one last unshift.
      if (!state.endEmitted && state.length === 0) {
        state.endEmitted = true;
        stream.readable = false;
        stream.emit('end');
      }
    });
  }
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf (xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}

}).call(this,require('_process'))
},{"_process":923,"buffer":46,"core-util-is":78,"events":95,"inherits":266,"isarray":67,"stream":978,"string_decoder/":979}],71:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.


// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);


function TransformState(options, stream) {
  this.afterTransform = function(er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb)
    return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (data !== null && data !== undefined)
    stream.push(data);

  if (cb)
    cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}


function Transform(options) {
  if (!(this instanceof Transform))
    return new Transform(options);

  Duplex.call(this, options);

  var ts = this._transformState = new TransformState(options, this);

  // when the writable side finishes, then flush out anything remaining.
  var stream = this;

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  this.once('finish', function() {
    if ('function' === typeof this._flush)
      this._flush(function(er) {
        done(stream, er);
      });
    else
      done(stream);
  });
}

Transform.prototype.push = function(chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
  throw new Error('not implemented');
};

Transform.prototype._write = function(chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform ||
        rs.needReadable ||
        rs.length < rs.highWaterMark)
      this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};


function done(stream, er) {
  if (er)
    return stream.emit('error', er);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var rs = stream._readableState;
  var ts = stream._transformState;

  if (ws.length)
    throw new Error('calling transform done when ws.length != 0');

  if (ts.transforming)
    throw new Error('calling transform done when still transforming');

  return stream.push(null);
}

},{"./_stream_duplex":68,"core-util-is":78,"inherits":266}],72:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.

module.exports = Writable;

/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Stream = require('stream');

util.inherits(Writable, Stream);

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
}

function WritableState(options, stream) {
  options = options || {};

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, becuase any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function(er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.buffer = [];

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

function Writable(options) {
  var Duplex = require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
  this.emit('error', new Error('Cannot pipe. Not readable.'));
};


function writeAfterEnd(stream, state, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  process.nextTick(function() {
    cb(er);
  });
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  if (!Buffer.isBuffer(chunk) &&
      'string' !== typeof chunk &&
      chunk !== null &&
      chunk !== undefined &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    process.nextTick(function() {
      cb(er);
    });
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (typeof cb !== 'function')
    cb = function() {};

  if (state.ended)
    writeAfterEnd(this, state, cb);
  else if (validChunk(this, state, chunk, cb))
    ret = writeOrBuffer(this, state, chunk, encoding, cb);

  return ret;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      typeof chunk === 'string') {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);
  if (Buffer.isBuffer(chunk))
    encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret)
    state.needDrain = true;

  if (state.writing)
    state.buffer.push(new WriteReq(chunk, encoding, cb));
  else
    doWrite(stream, state, len, chunk, encoding, cb);

  return ret;
}

function doWrite(stream, state, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  if (sync)
    process.nextTick(function() {
      cb(er);
    });
  else
    cb(er);

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er)
    onwriteError(stream, state, sync, er, cb);
  else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(stream, state);

    if (!finished && !state.bufferProcessing && state.buffer.length)
      clearBuffer(stream, state);

    if (sync) {
      process.nextTick(function() {
        afterWrite(stream, state, finished, cb);
      });
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  cb();
  if (finished)
    finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}


// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;

  for (var c = 0; c < state.buffer.length; c++) {
    var entry = state.buffer[c];
    var chunk = entry.chunk;
    var encoding = entry.encoding;
    var cb = entry.callback;
    var len = state.objectMode ? 1 : chunk.length;

    doWrite(stream, state, len, chunk, encoding, cb);

    // if we didn't call the onwrite immediately, then
    // it means that we need to wait until it does.
    // also, that means that the chunk and cb are currently
    // being processed, so move the buffer counter past them.
    if (state.writing) {
      c++;
      break;
    }
  }

  state.bufferProcessing = false;
  if (c < state.buffer.length)
    state.buffer = state.buffer.slice(c);
  else
    state.buffer.length = 0;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));
};

Writable.prototype.end = function(chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (typeof chunk !== 'undefined' && chunk !== null)
    this.write(chunk, encoding);

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(stream, state) {
  return (state.ending &&
          state.length === 0 &&
          !state.finished &&
          !state.writing);
}

function finishMaybe(stream, state) {
  var need = needFinish(stream, state);
  if (need) {
    state.finished = true;
    stream.emit('finish');
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      process.nextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

}).call(this,require('_process'))
},{"./_stream_duplex":68,"_process":923,"buffer":46,"core-util-is":78,"inherits":266,"stream":978}],73:[function(require,module,exports){
(function (process){
var Stream = require('stream'); // hack to fix a circular dependency issue when used with browserify
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = Stream;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
if (!process.browser && process.env.READABLE_STREAM === 'disable') {
  module.exports = require('stream');
}

}).call(this,require('_process'))
},{"./lib/_stream_duplex.js":68,"./lib/_stream_passthrough.js":69,"./lib/_stream_readable.js":70,"./lib/_stream_transform.js":71,"./lib/_stream_writable.js":72,"_process":923,"stream":978}],74:[function(require,module,exports){
"use strict"

var convexHull1d = require('./lib/ch1d')
var convexHull2d = require('./lib/ch2d')
var convexHullnd = require('./lib/chnd')

module.exports = convexHull

function convexHull(points) {
  var n = points.length
  if(n === 0) {
    return []
  } else if(n === 1) {
    return [[0]]
  }
  var d = points[0].length
  if(d === 0) {
    return []
  } else if(d === 1) {
    return convexHull1d(points)
  } else if(d === 2) {
    return convexHull2d(points)
  }
  return convexHullnd(points, d)
}
},{"./lib/ch1d":75,"./lib/ch2d":76,"./lib/chnd":77}],75:[function(require,module,exports){
"use strict"

module.exports = convexHull1d

function convexHull1d(points) {
  var lo = 0
  var hi = 0
  for(var i=1; i<points.length; ++i) {
    if(points[i][0] < points[lo][0]) {
      lo = i
    }
    if(points[i][0] > points[hi][0]) {
      hi = i
    }
  }
  if(lo < hi) {
    return [[lo], [hi]]
  } else if(lo > hi) {
    return [[hi], [lo]]
  } else {
    return [[lo]]
  }
}
},{}],76:[function(require,module,exports){
'use strict'

module.exports = convexHull2D

var monotoneHull = require('monotone-convex-hull-2d')

function convexHull2D(points) {
  var hull = monotoneHull(points)
  var h = hull.length
  if(h <= 2) {
    return []
  }
  var edges = new Array(h)
  var a = hull[h-1]
  for(var i=0; i<h; ++i) {
    var b = hull[i]
    edges[i] = [a,b]
    a = b
  }
  return edges
}

},{"monotone-convex-hull-2d":427}],77:[function(require,module,exports){
'use strict'

module.exports = convexHullnD

var ich = require('incremental-convex-hull')
var aff = require('affine-hull')

function permute(points, front) {
  var n = points.length
  var npoints = new Array(n)
  for(var i=0; i<front.length; ++i) {
    npoints[i] = points[front[i]]
  }
  var ptr = front.length
  for(var i=0; i<n; ++i) {
    if(front.indexOf(i) < 0) {
      npoints[ptr++] = points[i]
    }
  }
  return npoints
}

function invPermute(cells, front) {
  var nc = cells.length
  var nf = front.length
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    for(var j=0; j<c.length; ++j) {
      var x = c[j]
      if(x < nf) {
        c[j] = front[x]
      } else {
        x = x - nf
        for(var k=0; k<nf; ++k) {
          if(x >= front[k]) {
            x += 1
          }
        }
        c[j] = x
      }
    }
  }
  return cells
}

function convexHullnD(points, d) {
  try {
    return ich(points, true)
  } catch(e) {
    //If point set is degenerate, try to find a basis and rerun it
    var ah = aff(points)
    if(ah.length <= d) {
      //No basis, no try
      return []
    }
    var npoints = permute(points, ah)
    var nhull   = ich(npoints, true)
    return invPermute(nhull, ah)
  }
}
},{"affine-hull":5,"incremental-convex-hull":265}],78:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.

function isArray(arg) {
  if (Array.isArray) {
    return Array.isArray(arg);
  }
  return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = Buffer.isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
},{"../../is-buffer/index.js":270}],79:[function(require,module,exports){
module.exports = {
  AFG: 'afghan',
  ALA: '\\b\\wland',
  ALB: 'albania',
  DZA: 'algeria',
  ASM: '^(?=.*americ).*samoa',
  AND: 'andorra',
  AGO: 'angola',
  AIA: 'anguill?a',
  ATA: 'antarctica',
  ATG: 'antigua',
  ARG: 'argentin',
  ARM: 'armenia',
  ABW: '^(?!.*bonaire).*\\baruba',
  AUS: 'australia',
  AUT: '^(?!.*hungary).*austria|\\baustri.*\\bemp',
  AZE: 'azerbaijan',
  BHS: 'bahamas',
  BHR: 'bahrain',
  BGD: 'bangladesh|^(?=.*east).*paki?stan',
  BRB: 'barbados',
  BLR: 'belarus|byelo',
  BEL: '^(?!.*luxem).*belgium',
  BLZ: 'belize|^(?=.*british).*honduras',
  BEN: 'benin|dahome',
  BMU: 'bermuda',
  BTN: 'bhutan',
  BOL: 'bolivia',
  BES: '^(?=.*bonaire).*eustatius|^(?=.*carib).*netherlands|\\bbes.?islands',
  BIH: 'herzegovina|bosnia',
  BWA: 'botswana|bechuana',
  BVT: 'bouvet',
  BRA: 'brazil',
  IOT: 'british.?indian.?ocean',
  BRN: 'brunei',
  BGR: 'bulgaria',
  BFA: 'burkina|\\bfaso|upper.?volta',
  BDI: 'burundi',
  CPV: 'verde',
  KHM: 'cambodia|kampuchea|khmer',
  CMR: 'cameroon',
  CAN: 'canada',
  CYM: 'cayman',
  CAF: '\\bcentral.african.republic',
  TCD: '\\bchad',
  CHL: '\\bchile',
  CHN: '^(?!.*\\bmac)(?!.*\\bhong)(?!.*\\btai)(?!.*\\brep).*china|^(?=.*peo)(?=.*rep).*china',
  CXR: 'christmas',
  CCK: '\\bcocos|keeling',
  COL: 'colombia',
  COM: 'comoro',
  COG: '^(?!.*\\bdem)(?!.*\\bd[\\.]?r)(?!.*kinshasa)(?!.*zaire)(?!.*belg)(?!.*l.opoldville)(?!.*free).*\\bcongo',
  COK: '\\bcook',
  CRI: 'costa.?rica',
  CIV: 'ivoire|ivory',
  HRV: 'croatia',
  CUB: '\\bcuba',
  CUW: '^(?!.*bonaire).*\\bcura(c|ç)ao',
  CYP: 'cyprus',
  CSK: 'czechoslovakia',
  CZE: '^(?=.*rep).*czech|czechia|bohemia',
  COD: '\\bdem.*congo|congo.*\\bdem|congo.*\\bd[\\.]?r|\\bd[\\.]?r.*congo|belgian.?congo|congo.?free.?state|kinshasa|zaire|l.opoldville|drc|droc|rdc',
  DNK: 'denmark',
  DJI: 'djibouti',
  DMA: 'dominica(?!n)',
  DOM: 'dominican.rep',
  ECU: 'ecuador',
  EGY: 'egypt',
  SLV: 'el.?salvador',
  GNQ: 'guine.*eq|eq.*guine|^(?=.*span).*guinea',
  ERI: 'eritrea',
  EST: 'estonia',
  ETH: 'ethiopia|abyssinia',
  FLK: 'falkland|malvinas',
  FRO: 'faroe|faeroe',
  FJI: 'fiji',
  FIN: 'finland',
  FRA: '^(?!.*\\bdep)(?!.*martinique).*france|french.?republic|\\bgaul',
  GUF: '^(?=.*french).*guiana',
  PYF: 'french.?polynesia|tahiti',
  ATF: 'french.?southern',
  GAB: 'gabon',
  GMB: 'gambia',
  GEO: '^(?!.*south).*georgia',
  DDR: 'german.?democratic.?republic|democratic.?republic.*germany|east.germany',
  DEU: '^(?!.*east).*germany|^(?=.*\\bfed.*\\brep).*german',
  GHA: 'ghana|gold.?coast',
  GIB: 'gibraltar',
  GRC: 'greece|hellenic|hellas',
  GRL: 'greenland',
  GRD: 'grenada',
  GLP: 'guadeloupe',
  GUM: '\\bguam',
  GTM: 'guatemala',
  GGY: 'guernsey',
  GIN: '^(?!.*eq)(?!.*span)(?!.*bissau)(?!.*portu)(?!.*new).*guinea',
  GNB: 'bissau|^(?=.*portu).*guinea',
  GUY: 'guyana|british.?guiana',
  HTI: 'haiti',
  HMD: 'heard.*mcdonald',
  VAT: 'holy.?see|vatican|papal.?st',
  HND: '^(?!.*brit).*honduras',
  HKG: 'hong.?kong',
  HUN: '^(?!.*austr).*hungary',
  ISL: 'iceland',
  IND: 'india(?!.*ocea)',
  IDN: 'indonesia',
  IRN: '\\biran|persia',
  IRQ: '\\biraq|mesopotamia',
  IRL: '(^ireland)|(^republic.*ireland)',
  IMN: '^(?=.*isle).*\\bman',
  ISR: 'israel',
  ITA: 'italy',
  JAM: 'jamaica',
  JPN: 'japan',
  JEY: 'jersey',
  JOR: 'jordan',
  KAZ: 'kazak',
  KEN: 'kenya|british.?east.?africa|east.?africa.?prot',
  KIR: 'kiribati',
  PRK: '^(?=.*democrat|people|north|d.*p.*.r).*\\bkorea|dprk|korea.*(d.*p.*r)',
  KWT: 'kuwait',
  KGZ: 'kyrgyz|kirghiz',
  LAO: '\\blaos?\\b',
  LVA: 'latvia',
  LBN: 'lebanon',
  LSO: 'lesotho|basuto',
  LBR: 'liberia',
  LBY: 'libya',
  LIE: 'liechtenstein',
  LTU: 'lithuania',
  LUX: '^(?!.*belg).*luxem',
  MAC: 'maca(o|u)',
  MDG: 'madagascar|malagasy',
  MWI: 'malawi|nyasa',
  MYS: 'malaysia',
  MDV: 'maldive',
  MLI: '\\bmali\\b',
  MLT: '\\bmalta',
  MHL: 'marshall',
  MTQ: 'martinique',
  MRT: 'mauritania',
  MUS: 'mauritius',
  MYT: '\\bmayotte',
  MEX: '\\bmexic',
  FSM: 'fed.*micronesia|micronesia.*fed',
  MCO: 'monaco',
  MNG: 'mongolia',
  MNE: '^(?!.*serbia).*montenegro',
  MSR: 'montserrat',
  MAR: 'morocco|\\bmaroc',
  MOZ: 'mozambique',
  MMR: 'myanmar|burma',
  NAM: 'namibia',
  NRU: 'nauru',
  NPL: 'nepal',
  NLD: '^(?!.*\\bant)(?!.*\\bcarib).*netherlands',
  ANT: '^(?=.*\\bant).*(nether|dutch)',
  NCL: 'new.?caledonia',
  NZL: 'new.?zealand',
  NIC: 'nicaragua',
  NER: '\\bniger(?!ia)',
  NGA: 'nigeria',
  NIU: 'niue',
  NFK: 'norfolk',
  MNP: 'mariana',
  NOR: 'norway',
  OMN: '\\boman|trucial',
  PAK: '^(?!.*east).*paki?stan',
  PLW: 'palau',
  PSE: 'palestin|\\bgaza|west.?bank',
  PAN: 'panama',
  PNG: 'papua|new.?guinea',
  PRY: 'paraguay',
  PER: 'peru',
  PHL: 'philippines',
  PCN: 'pitcairn',
  POL: 'poland',
  PRT: 'portugal',
  PRI: 'puerto.?rico',
  QAT: 'qatar',
  KOR: '^(?!.*d.*p.*r)(?!.*democrat)(?!.*people)(?!.*north).*\\bkorea(?!.*d.*p.*r)',
  MDA: 'moldov|b(a|e)ssarabia',
  REU: 'r(e|é)union',
  ROU: 'r(o|u|ou)mania',
  RUS: '\\brussia|soviet.?union|u\\.?s\\.?s\\.?r|socialist.?republics',
  RWA: 'rwanda',
  BLM: 'barth(e|é)lemy',
  SHN: 'helena',
  KNA: 'kitts|\\bnevis',
  LCA: '\\blucia',
  MAF: '^(?=.*collectivity).*martin|^(?=.*france).*martin(?!ique)|^(?=.*french).*martin(?!ique)',
  SPM: 'miquelon',
  VCT: 'vincent',
  WSM: '^(?!.*amer).*samoa',
  SMR: 'san.?marino',
  STP: '\\bs(a|ã)o.?tom(e|é)',
  SAU: '\\bsa\\w*.?arabia',
  SEN: 'senegal',
  SRB: '^(?!.*monte).*serbia',
  SYC: 'seychell',
  SLE: 'sierra',
  SGP: 'singapore',
  SXM: '^(?!.*martin)(?!.*saba).*maarten',
  SVK: '^(?!.*cze).*slovak',
  SVN: 'slovenia',
  SLB: 'solomon',
  SOM: 'somali',
  ZAF: 'south.africa|s\\\\..?africa',
  SGS: 'south.?georgia|sandwich',
  SSD: '\\bs\\w*.?sudan',
  ESP: 'spain',
  LKA: 'sri.?lanka|ceylon',
  SDN: '^(?!.*\\bs(?!u)).*sudan',
  SUR: 'surinam|dutch.?guiana',
  SJM: 'svalbard',
  SWZ: 'swaziland',
  SWE: 'sweden',
  CHE: 'switz|swiss',
  SYR: 'syria',
  TWN: 'taiwan|taipei|formosa|^(?!.*peo)(?=.*rep).*china',
  TJK: 'tajik',
  THA: 'thailand|\\bsiam',
  MKD: 'macedonia|fyrom',
  TLS: '^(?=.*leste).*timor|^(?=.*east).*timor',
  TGO: 'togo',
  TKL: 'tokelau',
  TON: 'tonga',
  TTO: 'trinidad|tobago',
  TUN: 'tunisia',
  TUR: 'turkey',
  TKM: 'turkmen',
  TCA: 'turks',
  TUV: 'tuvalu',
  UGA: 'uganda',
  UKR: 'ukrain',
  ARE: 'emirates|^u\\.?a\\.?e\\.?$|united.?arab.?em',
  GBR: 'united.?kingdom|britain|^u\\.?k\\.?$',
  TZA: 'tanzania',
  USA: 'united.?states\\b(?!.*islands)|\\bu\\.?s\\.?a\\.?\\b|^\\s*u\\.?s\\.?\\b(?!.*islands)',
  UMI: 'minor.?outlying.?is',
  URY: 'uruguay',
  UZB: 'uzbek',
  VUT: 'vanuatu|new.?hebrides',
  VEN: 'venezuela',
  VNM: '^(?!.*republic).*viet.?nam|^(?=.*socialist).*viet.?nam',
  VGB: '^(?=.*\\bu\\.?\\s?k).*virgin|^(?=.*brit).*virgin|^(?=.*kingdom).*virgin',
  VIR: '^(?=.*\\bu\\.?\\s?s).*virgin|^(?=.*states).*virgin',
  WLF: 'futuna|wallis',
  ESH: 'western.sahara',
  YEM: '^(?!.*arab)(?!.*north)(?!.*sana)(?!.*peo)(?!.*dem)(?!.*south)(?!.*aden)(?!.*\\bp\\.?d\\.?r).*yemen',
  YMD: '^(?=.*peo).*yemen|^(?!.*rep)(?=.*dem).*yemen|^(?=.*south).*yemen|^(?=.*aden).*yemen|^(?=.*\\bp\\.?d\\.?r).*yemen',
  YUG: 'yugoslavia',
  ZMB: 'zambia|northern.?rhodesia',
  EAZ: 'zanzibar',
  ZWE: 'zimbabwe|^(?!.*northern).*rhodesia'
}

},{}],80:[function(require,module,exports){
// (c) Dean McNamee <dean@gmail.com>, 2012.
//
// https://github.com/deanm/css-color-parser-js
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.

// http://www.w3.org/TR/css3-color/
var kCSSColorTable = {
  "transparent": [0,0,0,0], "aliceblue": [240,248,255,1],
  "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1],
  "aquamarine": [127,255,212,1], "azure": [240,255,255,1],
  "beige": [245,245,220,1], "bisque": [255,228,196,1],
  "black": [0,0,0,1], "blanchedalmond": [255,235,205,1],
  "blue": [0,0,255,1], "blueviolet": [138,43,226,1],
  "brown": [165,42,42,1], "burlywood": [222,184,135,1],
  "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1],
  "chocolate": [210,105,30,1], "coral": [255,127,80,1],
  "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1],
  "crimson": [220,20,60,1], "cyan": [0,255,255,1],
  "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1],
  "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1],
  "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1],
  "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1],
  "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1],
  "darkorchid": [153,50,204,1], "darkred": [139,0,0,1],
  "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1],
  "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1],
  "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1],
  "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1],
  "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1],
  "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1],
  "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1],
  "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1],
  "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1],
  "gold": [255,215,0,1], "goldenrod": [218,165,32,1],
  "gray": [128,128,128,1], "green": [0,128,0,1],
  "greenyellow": [173,255,47,1], "grey": [128,128,128,1],
  "honeydew": [240,255,240,1], "hotpink": [255,105,180,1],
  "indianred": [205,92,92,1], "indigo": [75,0,130,1],
  "ivory": [255,255,240,1], "khaki": [240,230,140,1],
  "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1],
  "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1],
  "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1],
  "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1],
  "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1],
  "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1],
  "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1],
  "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1],
  "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1],
  "lightyellow": [255,255,224,1], "lime": [0,255,0,1],
  "limegreen": [50,205,50,1], "linen": [250,240,230,1],
  "magenta": [255,0,255,1], "maroon": [128,0,0,1],
  "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1],
  "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1],
  "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1],
  "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1],
  "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1],
  "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1],
  "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1],
  "navy": [0,0,128,1], "oldlace": [253,245,230,1],
  "olive": [128,128,0,1], "olivedrab": [107,142,35,1],
  "orange": [255,165,0,1], "orangered": [255,69,0,1],
  "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1],
  "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1],
  "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1],
  "peachpuff": [255,218,185,1], "peru": [205,133,63,1],
  "pink": [255,192,203,1], "plum": [221,160,221,1],
  "powderblue": [176,224,230,1], "purple": [128,0,128,1],
  "rebeccapurple": [102,51,153,1],
  "red": [255,0,0,1], "rosybrown": [188,143,143,1],
  "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1],
  "salmon": [250,128,114,1], "sandybrown": [244,164,96,1],
  "seagreen": [46,139,87,1], "seashell": [255,245,238,1],
  "sienna": [160,82,45,1], "silver": [192,192,192,1],
  "skyblue": [135,206,235,1], "slateblue": [106,90,205,1],
  "slategray": [112,128,144,1], "slategrey": [112,128,144,1],
  "snow": [255,250,250,1], "springgreen": [0,255,127,1],
  "steelblue": [70,130,180,1], "tan": [210,180,140,1],
  "teal": [0,128,128,1], "thistle": [216,191,216,1],
  "tomato": [255,99,71,1], "turquoise": [64,224,208,1],
  "violet": [238,130,238,1], "wheat": [245,222,179,1],
  "white": [255,255,255,1], "whitesmoke": [245,245,245,1],
  "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]}

function clamp_css_byte(i) {  // Clamp to integer 0 .. 255.
  i = Math.round(i);  // Seems to be what Chrome does (vs truncation).
  return i < 0 ? 0 : i > 255 ? 255 : i;
}

function clamp_css_float(f) {  // Clamp to float 0.0 .. 1.0.
  return f < 0 ? 0 : f > 1 ? 1 : f;
}

function parse_css_int(str) {  // int or percentage.
  if (str[str.length - 1] === '%')
    return clamp_css_byte(parseFloat(str) / 100 * 255);
  return clamp_css_byte(parseInt(str));
}

function parse_css_float(str) {  // float or percentage.
  if (str[str.length - 1] === '%')
    return clamp_css_float(parseFloat(str) / 100);
  return clamp_css_float(parseFloat(str));
}

function css_hue_to_rgb(m1, m2, h) {
  if (h < 0) h += 1;
  else if (h > 1) h -= 1;

  if (h * 6 < 1) return m1 + (m2 - m1) * h * 6;
  if (h * 2 < 1) return m2;
  if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6;
  return m1;
}

function parseCSSColor(css_str) {
  // Remove all whitespace, not compliant, but should just be more accepting.
  var str = css_str.replace(/ /g, '').toLowerCase();

  // Color keywords (and transparent) lookup.
  if (str in kCSSColorTable) return kCSSColorTable[str].slice();  // dup.

  // #abc and #abc123 syntax.
  if (str[0] === '#') {
    if (str.length === 4) {
      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
      if (!(iv >= 0 && iv <= 0xfff)) return null;  // Covers NaN.
      return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8),
              (iv & 0xf0) | ((iv & 0xf0) >> 4),
              (iv & 0xf) | ((iv & 0xf) << 4),
              1];
    } else if (str.length === 7) {
      var iv = parseInt(str.substr(1), 16);  // TODO(deanm): Stricter parsing.
      if (!(iv >= 0 && iv <= 0xffffff)) return null;  // Covers NaN.
      return [(iv & 0xff0000) >> 16,
              (iv & 0xff00) >> 8,
              iv & 0xff,
              1];
    }

    return null;
  }

  var op = str.indexOf('('), ep = str.indexOf(')');
  if (op !== -1 && ep + 1 === str.length) {
    var fname = str.substr(0, op);
    var params = str.substr(op+1, ep-(op+1)).split(',');
    var alpha = 1;  // To allow case fallthrough.
    switch (fname) {
      case 'rgba':
        if (params.length !== 4) return null;
        alpha = parse_css_float(params.pop());
        // Fall through.
      case 'rgb':
        if (params.length !== 3) return null;
        return [parse_css_int(params[0]),
                parse_css_int(params[1]),
                parse_css_int(params[2]),
                alpha];
      case 'hsla':
        if (params.length !== 4) return null;
        alpha = parse_css_float(params.pop());
        // Fall through.
      case 'hsl':
        if (params.length !== 3) return null;
        var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360;  // 0 .. 1
        // NOTE(deanm): According to the CSS spec s/l should only be
        // percentages, but we don't bother and let float or percentage.
        var s = parse_css_float(params[1]);
        var l = parse_css_float(params[2]);
        var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
        var m1 = l * 2 - m2;
        return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255),
                clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255),
                clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255),
                alpha];
      default:
        return null;
    }
  }

  return null;
}

try { exports.parseCSSColor = parseCSSColor } catch(e) { }

},{}],81:[function(require,module,exports){
"use strict"

function dcubicHermite(p0, v0, p1, v1, t, f) {
  var dh00 = 6*t*t-6*t,
      dh10 = 3*t*t-4*t + 1,
      dh01 = -6*t*t+6*t,
      dh11 = 3*t*t-2*t
  if(p0.length) {
    if(!f) {
      f = new Array(p0.length)
    }
    for(var i=p0.length-1; i>=0; --i) {
      f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i]
    }
    return f
  }
  return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1
}

function cubicHermite(p0, v0, p1, v1, t, f) {
  var ti  = (t-1), t2 = t*t, ti2 = ti*ti,
      h00 = (1+2*t)*ti2,
      h10 = t*ti2,
      h01 = t2*(3-2*t),
      h11 = t2*ti
  if(p0.length) {
    if(!f) {
      f = new Array(p0.length)
    }
    for(var i=p0.length-1; i>=0; --i) {
      f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i]
    }
    return f
  }
  return h00*p0 + h10*v0 + h01*p1 + h11*v1
}

module.exports = cubicHermite
module.exports.derivative = dcubicHermite
},{}],82:[function(require,module,exports){
"use strict"

var createThunk = require("./lib/thunk.js")

function Procedure() {
  this.argTypes = []
  this.shimArgs = []
  this.arrayArgs = []
  this.arrayBlockIndices = []
  this.scalarArgs = []
  this.offsetArgs = []
  this.offsetArgIndex = []
  this.indexArgs = []
  this.shapeArgs = []
  this.funcName = ""
  this.pre = null
  this.body = null
  this.post = null
  this.debug = false
}

function compileCwise(user_args) {
  //Create procedure
  var proc = new Procedure()
  
  //Parse blocks
  proc.pre    = user_args.pre
  proc.body   = user_args.body
  proc.post   = user_args.post

  //Parse arguments
  var proc_args = user_args.args.slice(0)
  proc.argTypes = proc_args
  for(var i=0; i<proc_args.length; ++i) {
    var arg_type = proc_args[i]
    if(arg_type === "array" || (typeof arg_type === "object" && arg_type.blockIndices)) {
      proc.argTypes[i] = "array"
      proc.arrayArgs.push(i)
      proc.arrayBlockIndices.push(arg_type.blockIndices ? arg_type.blockIndices : 0)
      proc.shimArgs.push("array" + i)
      if(i < proc.pre.args.length && proc.pre.args[i].count>0) {
        throw new Error("cwise: pre() block may not reference array args")
      }
      if(i < proc.post.args.length && proc.post.args[i].count>0) {
        throw new Error("cwise: post() block may not reference array args")
      }
    } else if(arg_type === "scalar") {
      proc.scalarArgs.push(i)
      proc.shimArgs.push("scalar" + i)
    } else if(arg_type === "index") {
      proc.indexArgs.push(i)
      if(i < proc.pre.args.length && proc.pre.args[i].count > 0) {
        throw new Error("cwise: pre() block may not reference array index")
      }
      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
        throw new Error("cwise: body() block may not write to array index")
      }
      if(i < proc.post.args.length && proc.post.args[i].count > 0) {
        throw new Error("cwise: post() block may not reference array index")
      }
    } else if(arg_type === "shape") {
      proc.shapeArgs.push(i)
      if(i < proc.pre.args.length && proc.pre.args[i].lvalue) {
        throw new Error("cwise: pre() block may not write to array shape")
      }
      if(i < proc.body.args.length && proc.body.args[i].lvalue) {
        throw new Error("cwise: body() block may not write to array shape")
      }
      if(i < proc.post.args.length && proc.post.args[i].lvalue) {
        throw new Error("cwise: post() block may not write to array shape")
      }
    } else if(typeof arg_type === "object" && arg_type.offset) {
      proc.argTypes[i] = "offset"
      proc.offsetArgs.push({ array: arg_type.array, offset:arg_type.offset })
      proc.offsetArgIndex.push(i)
    } else {
      throw new Error("cwise: Unknown argument type " + proc_args[i])
    }
  }
  
  //Make sure at least one array argument was specified
  if(proc.arrayArgs.length <= 0) {
    throw new Error("cwise: No array arguments specified")
  }
  
  //Make sure arguments are correct
  if(proc.pre.args.length > proc_args.length) {
    throw new Error("cwise: Too many arguments in pre() block")
  }
  if(proc.body.args.length > proc_args.length) {
    throw new Error("cwise: Too many arguments in body() block")
  }
  if(proc.post.args.length > proc_args.length) {
    throw new Error("cwise: Too many arguments in post() block")
  }

  //Check debug flag
  proc.debug = !!user_args.printCode || !!user_args.debug
  
  //Retrieve name
  proc.funcName = user_args.funcName || "cwise"
  
  //Read in block size
  proc.blockSize = user_args.blockSize || 64

  return createThunk(proc)
}

module.exports = compileCwise

},{"./lib/thunk.js":84}],83:[function(require,module,exports){
"use strict"

var uniq = require("uniq")

// This function generates very simple loops analogous to how you typically traverse arrays (the outermost loop corresponds to the slowest changing index, the innermost loop to the fastest changing index)
// TODO: If two arrays have the same strides (and offsets) there is potential for decreasing the number of "pointers" and related variables. The drawback is that the type signature would become more specific and that there would thus be less potential for caching, but it might still be worth it, especially when dealing with large numbers of arguments.
function innerFill(order, proc, body) {
  var dimension = order.length
    , nargs = proc.arrayArgs.length
    , has_index = proc.indexArgs.length>0
    , code = []
    , vars = []
    , idx=0, pidx=0, i, j
  for(i=0; i<dimension; ++i) { // Iteration variables
    vars.push(["i",i,"=0"].join(""))
  }
  //Compute scan deltas
  for(j=0; j<nargs; ++j) {
    for(i=0; i<dimension; ++i) {
      pidx = idx
      idx = order[i]
      if(i === 0) { // The innermost/fastest dimension's delta is simply its stride
        vars.push(["d",j,"s",i,"=t",j,"p",idx].join(""))
      } else { // For other dimensions the delta is basically the stride minus something which essentially "rewinds" the previous (more inner) dimension
        vars.push(["d",j,"s",i,"=(t",j,"p",idx,"-s",pidx,"*t",j,"p",pidx,")"].join(""))
      }
    }
  }
  code.push("var " + vars.join(","))
  //Scan loop
  for(i=dimension-1; i>=0; --i) { // Start at largest stride and work your way inwards
    idx = order[i]
    code.push(["for(i",i,"=0;i",i,"<s",idx,";++i",i,"){"].join(""))
  }
  //Push body of inner loop
  code.push(body)
  //Advance scan pointers
  for(i=0; i<dimension; ++i) {
    pidx = idx
    idx = order[i]
    for(j=0; j<nargs; ++j) {
      code.push(["p",j,"+=d",j,"s",i].join(""))
    }
    if(has_index) {
      if(i > 0) {
        code.push(["index[",pidx,"]-=s",pidx].join(""))
      }
      code.push(["++index[",idx,"]"].join(""))
    }
    code.push("}")
  }
  return code.join("\n")
}

// Generate "outer" loops that loop over blocks of data, applying "inner" loops to the blocks by manipulating the local variables in such a way that the inner loop only "sees" the current block.
// TODO: If this is used, then the previous declaration (done by generateCwiseOp) of s* is essentially unnecessary.
//       I believe the s* are not used elsewhere (in particular, I don't think they're used in the pre/post parts and "shape" is defined independently), so it would be possible to make defining the s* dependent on what loop method is being used.
function outerFill(matched, order, proc, body) {
  var dimension = order.length
    , nargs = proc.arrayArgs.length
    , blockSize = proc.blockSize
    , has_index = proc.indexArgs.length > 0
    , code = []
  for(var i=0; i<nargs; ++i) {
    code.push(["var offset",i,"=p",i].join(""))
  }
  //Generate loops for unmatched dimensions
  // The order in which these dimensions are traversed is fairly arbitrary (from small stride to large stride, for the first argument)
  // TODO: It would be nice if the order in which these loops are placed would also be somehow "optimal" (at the very least we should check that it really doesn't hurt us if they're not).
  for(var i=matched; i<dimension; ++i) {
    code.push(["for(var j"+i+"=SS[", order[i], "]|0;j", i, ">0;){"].join("")) // Iterate back to front
    code.push(["if(j",i,"<",blockSize,"){"].join("")) // Either decrease j by blockSize (s = blockSize), or set it to zero (after setting s = j).
    code.push(["s",order[i],"=j",i].join(""))
    code.push(["j",i,"=0"].join(""))
    code.push(["}else{s",order[i],"=",blockSize].join(""))
    code.push(["j",i,"-=",blockSize,"}"].join(""))
    if(has_index) {
      code.push(["index[",order[i],"]=j",i].join(""))
    }
  }
  for(var i=0; i<nargs; ++i) {
    var indexStr = ["offset"+i]
    for(var j=matched; j<dimension; ++j) {
      indexStr.push(["j",j,"*t",i,"p",order[j]].join(""))
    }
    code.push(["p",i,"=(",indexStr.join("+"),")"].join(""))
  }
  code.push(innerFill(order, proc, body))
  for(var i=matched; i<dimension; ++i) {
    code.push("}")
  }
  return code.join("\n")
}

//Count the number of compatible inner orders
// This is the length of the longest common prefix of the arrays in orders.
// Each array in orders lists the dimensions of the correspond ndarray in order of increasing stride.
// This is thus the maximum number of dimensions that can be efficiently traversed by simple nested loops for all arrays.
function countMatches(orders) {
  var matched = 0, dimension = orders[0].length
  while(matched < dimension) {
    for(var j=1; j<orders.length; ++j) {
      if(orders[j][matched] !== orders[0][matched]) {
        return matched
      }
    }
    ++matched
  }
  return matched
}

//Processes a block according to the given data types
// Replaces variable names by different ones, either "local" ones (that are then ferried in and out of the given array) or ones matching the arguments that the function performing the ultimate loop will accept.
function processBlock(block, proc, dtypes) {
  var code = block.body
  var pre = []
  var post = []
  for(var i=0; i<block.args.length; ++i) {
    var carg = block.args[i]
    if(carg.count <= 0) {
      continue
    }
    var re = new RegExp(carg.name, "g")
    var ptrStr = ""
    var arrNum = proc.arrayArgs.indexOf(i)
    switch(proc.argTypes[i]) {
      case "offset":
        var offArgIndex = proc.offsetArgIndex.indexOf(i)
        var offArg = proc.offsetArgs[offArgIndex]
        arrNum = offArg.array
        ptrStr = "+q" + offArgIndex // Adds offset to the "pointer" in the array
      case "array":
        ptrStr = "p" + arrNum + ptrStr
        var localStr = "l" + i
        var arrStr = "a" + arrNum
        if (proc.arrayBlockIndices[arrNum] === 0) { // Argument to body is just a single value from this array
          if(carg.count === 1) { // Argument/array used only once(?)
            if(dtypes[arrNum] === "generic") {
              if(carg.lvalue) {
                pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
                code = code.replace(re, localStr)
                post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
              } else {
                code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
              }
            } else {
              code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
            }
          } else if(dtypes[arrNum] === "generic") {
            pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
            code = code.replace(re, localStr)
            if(carg.lvalue) {
              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
            }
          } else {
            pre.push(["var ", localStr, "=", arrStr, "[", ptrStr, "]"].join("")) // TODO: Could we optimize by checking for carg.rvalue?
            code = code.replace(re, localStr)
            if(carg.lvalue) {
              post.push([arrStr, "[", ptrStr, "]=", localStr].join(""))
            }
          }
        } else { // Argument to body is a "block"
          var reStrArr = [carg.name], ptrStrArr = [ptrStr]
          for(var j=0; j<Math.abs(proc.arrayBlockIndices[arrNum]); j++) {
            reStrArr.push("\\s*\\[([^\\]]+)\\]")
            ptrStrArr.push("$" + (j+1) + "*t" + arrNum + "b" + j) // Matched index times stride
          }
          re = new RegExp(reStrArr.join(""), "g")
          ptrStr = ptrStrArr.join("+")
          if(dtypes[arrNum] === "generic") {
            /*if(carg.lvalue) {
              pre.push(["var ", localStr, "=", arrStr, ".get(", ptrStr, ")"].join("")) // Is this necessary if the argument is ONLY used as an lvalue? (keep in mind that we can have a += something, so we would actually need to check carg.rvalue)
              code = code.replace(re, localStr)
              post.push([arrStr, ".set(", ptrStr, ",", localStr,")"].join(""))
            } else {
              code = code.replace(re, [arrStr, ".get(", ptrStr, ")"].join(""))
            }*/
            throw new Error("cwise: Generic arrays not supported in combination with blocks!")
          } else {
            // This does not produce any local variables, even if variables are used multiple times. It would be possible to do so, but it would complicate things quite a bit.
            code = code.replace(re, [arrStr, "[", ptrStr, "]"].join(""))
          }
        }
      break
      case "scalar":
        code = code.replace(re, "Y" + proc.scalarArgs.indexOf(i))
      break
      case "index":
        code = code.replace(re, "index")
      break
      case "shape":
        code = code.replace(re, "shape")
      break
    }
  }
  return [pre.join("\n"), code, post.join("\n")].join("\n").trim()
}

function typeSummary(dtypes) {
  var summary = new Array(dtypes.length)
  var allEqual = true
  for(var i=0; i<dtypes.length; ++i) {
    var t = dtypes[i]
    var digits = t.match(/\d+/)
    if(!digits) {
      digits = ""
    } else {
      digits = digits[0]
    }
    if(t.charAt(0) === 0) {
      summary[i] = "u" + t.charAt(1) + digits
    } else {
      summary[i] = t.charAt(0) + digits
    }
    if(i > 0) {
      allEqual = allEqual && summary[i] === summary[i-1]
    }
  }
  if(allEqual) {
    return summary[0]
  }
  return summary.join("")
}

//Generates a cwise operator
function generateCWiseOp(proc, typesig) {

  //Compute dimension
  // Arrays get put first in typesig, and there are two entries per array (dtype and order), so this gets the number of dimensions in the first array arg.
  var dimension = (typesig[1].length - Math.abs(proc.arrayBlockIndices[0]))|0
  var orders = new Array(proc.arrayArgs.length)
  var dtypes = new Array(proc.arrayArgs.length)
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    dtypes[i] = typesig[2*i]
    orders[i] = typesig[2*i+1]
  }
  
  //Determine where block and loop indices start and end
  var blockBegin = [], blockEnd = [] // These indices are exposed as blocks
  var loopBegin = [], loopEnd = [] // These indices are iterated over
  var loopOrders = [] // orders restricted to the loop indices
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    if (proc.arrayBlockIndices[i]<0) {
      loopBegin.push(0)
      loopEnd.push(dimension)
      blockBegin.push(dimension)
      blockEnd.push(dimension+proc.arrayBlockIndices[i])
    } else {
      loopBegin.push(proc.arrayBlockIndices[i]) // Non-negative
      loopEnd.push(proc.arrayBlockIndices[i]+dimension)
      blockBegin.push(0)
      blockEnd.push(proc.arrayBlockIndices[i])
    }
    var newOrder = []
    for(var j=0; j<orders[i].length; j++) {
      if (loopBegin[i]<=orders[i][j] && orders[i][j]<loopEnd[i]) {
        newOrder.push(orders[i][j]-loopBegin[i]) // If this is a loop index, put it in newOrder, subtracting loopBegin, to make sure that all loopOrders are using a common set of indices.
      }
    }
    loopOrders.push(newOrder)
  }

  //First create arguments for procedure
  var arglist = ["SS"] // SS is the overall shape over which we iterate
  var code = ["'use strict'"]
  var vars = []
  
  for(var j=0; j<dimension; ++j) {
    vars.push(["s", j, "=SS[", j, "]"].join("")) // The limits for each dimension.
  }
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    arglist.push("a"+i) // Actual data array
    arglist.push("t"+i) // Strides
    arglist.push("p"+i) // Offset in the array at which the data starts (also used for iterating over the data)
    
    for(var j=0; j<dimension; ++j) { // Unpack the strides into vars for looping
      vars.push(["t",i,"p",j,"=t",i,"[",loopBegin[i]+j,"]"].join(""))
    }
    
    for(var j=0; j<Math.abs(proc.arrayBlockIndices[i]); ++j) { // Unpack the strides into vars for block iteration
      vars.push(["t",i,"b",j,"=t",i,"[",blockBegin[i]+j,"]"].join(""))
    }
  }
  for(var i=0; i<proc.scalarArgs.length; ++i) {
    arglist.push("Y" + i)
  }
  if(proc.shapeArgs.length > 0) {
    vars.push("shape=SS.slice(0)") // Makes the shape over which we iterate available to the user defined functions (so you can use width/height for example)
  }
  if(proc.indexArgs.length > 0) {
    // Prepare an array to keep track of the (logical) indices, initialized to dimension zeroes.
    var zeros = new Array(dimension)
    for(var i=0; i<dimension; ++i) {
      zeros[i] = "0"
    }
    vars.push(["index=[", zeros.join(","), "]"].join(""))
  }
  for(var i=0; i<proc.offsetArgs.length; ++i) { // Offset arguments used for stencil operations
    var off_arg = proc.offsetArgs[i]
    var init_string = []
    for(var j=0; j<off_arg.offset.length; ++j) {
      if(off_arg.offset[j] === 0) {
        continue
      } else if(off_arg.offset[j] === 1) {
        init_string.push(["t", off_arg.array, "p", j].join(""))      
      } else {
        init_string.push([off_arg.offset[j], "*t", off_arg.array, "p", j].join(""))
      }
    }
    if(init_string.length === 0) {
      vars.push("q" + i + "=0")
    } else {
      vars.push(["q", i, "=", init_string.join("+")].join(""))
    }
  }

  //Prepare this variables
  var thisVars = uniq([].concat(proc.pre.thisVars)
                      .concat(proc.body.thisVars)
                      .concat(proc.post.thisVars))
  vars = vars.concat(thisVars)
  code.push("var " + vars.join(","))
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    code.push("p"+i+"|=0")
  }
  
  //Inline prelude
  if(proc.pre.body.length > 3) {
    code.push(processBlock(proc.pre, proc, dtypes))
  }

  //Process body
  var body = processBlock(proc.body, proc, dtypes)
  var matched = countMatches(loopOrders)
  if(matched < dimension) {
    code.push(outerFill(matched, loopOrders[0], proc, body)) // TODO: Rather than passing loopOrders[0], it might be interesting to look at passing an order that represents the majority of the arguments for example.
  } else {
    code.push(innerFill(loopOrders[0], proc, body))
  }

  //Inline epilog
  if(proc.post.body.length > 3) {
    code.push(processBlock(proc.post, proc, dtypes))
  }
  
  if(proc.debug) {
    console.log("-----Generated cwise routine for ", typesig, ":\n" + code.join("\n") + "\n----------")
  }
  
  var loopName = [(proc.funcName||"unnamed"), "_cwise_loop_", orders[0].join("s"),"m",matched,typeSummary(dtypes)].join("")
  var f = new Function(["function ",loopName,"(", arglist.join(","),"){", code.join("\n"),"} return ", loopName].join(""))
  return f()
}
module.exports = generateCWiseOp

},{"uniq":994}],84:[function(require,module,exports){
"use strict"

// The function below is called when constructing a cwise function object, and does the following:
// A function object is constructed which accepts as argument a compilation function and returns another function.
// It is this other function that is eventually returned by createThunk, and this function is the one that actually
// checks whether a certain pattern of arguments has already been used before and compiles new loops as needed.
// The compilation passed to the first function object is used for compiling new functions.
// Once this function object is created, it is called with compile as argument, where the first argument of compile
// is bound to "proc" (essentially containing a preprocessed version of the user arguments to cwise).
// So createThunk roughly works like this:
// function createThunk(proc) {
//   var thunk = function(compileBound) {
//     var CACHED = {}
//     return function(arrays and scalars) {
//       if (dtype and order of arrays in CACHED) {
//         var func = CACHED[dtype and order of arrays]
//       } else {
//         var func = CACHED[dtype and order of arrays] = compileBound(dtype and order of arrays)
//       }
//       return func(arrays and scalars)
//     }
//   }
//   return thunk(compile.bind1(proc))
// }

var compile = require("./compile.js")

function createThunk(proc) {
  var code = ["'use strict'", "var CACHED={}"]
  var vars = []
  var thunkName = proc.funcName + "_cwise_thunk"
  
  //Build thunk
  code.push(["return function ", thunkName, "(", proc.shimArgs.join(","), "){"].join(""))
  var typesig = []
  var string_typesig = []
  var proc_args = [["array",proc.arrayArgs[0],".shape.slice(", // Slice shape so that we only retain the shape over which we iterate (which gets passed to the cwise operator as SS).
                    Math.max(0,proc.arrayBlockIndices[0]),proc.arrayBlockIndices[0]<0?(","+proc.arrayBlockIndices[0]+")"):")"].join("")]
  var shapeLengthConditions = [], shapeConditions = []
  // Process array arguments
  for(var i=0; i<proc.arrayArgs.length; ++i) {
    var j = proc.arrayArgs[i]
    vars.push(["t", j, "=array", j, ".dtype,",
               "r", j, "=array", j, ".order"].join(""))
    typesig.push("t" + j)
    typesig.push("r" + j)
    string_typesig.push("t"+j)
    string_typesig.push("r"+j+".join()")
    proc_args.push("array" + j + ".data")
    proc_args.push("array" + j + ".stride")
    proc_args.push("array" + j + ".offset|0")
    if (i>0) { // Gather conditions to check for shape equality (ignoring block indices)
      shapeLengthConditions.push("array" + proc.arrayArgs[0] + ".shape.length===array" + j + ".shape.length+" + (Math.abs(proc.arrayBlockIndices[0])-Math.abs(proc.arrayBlockIndices[i])))
      shapeConditions.push("array" + proc.arrayArgs[0] + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[0]) + "]===array" + j + ".shape[shapeIndex+" + Math.max(0,proc.arrayBlockIndices[i]) + "]")
    }
  }
  // Check for shape equality
  if (proc.arrayArgs.length > 1) {
    code.push("if (!(" + shapeLengthConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same dimensionality!')")
    code.push("for(var shapeIndex=array" + proc.arrayArgs[0] + ".shape.length-" + Math.abs(proc.arrayBlockIndices[0]) + "; shapeIndex-->0;) {")
    code.push("if (!(" + shapeConditions.join(" && ") + ")) throw new Error('cwise: Arrays do not all have the same shape!')")
    code.push("}")
  }
  // Process scalar arguments
  for(var i=0; i<proc.scalarArgs.length; ++i) {
    proc_args.push("scalar" + proc.scalarArgs[i])
  }
  // Check for cached function (and if not present, generate it)
  vars.push(["type=[", string_typesig.join(","), "].join()"].join(""))
  vars.push("proc=CACHED[type]")
  code.push("var " + vars.join(","))
  
  code.push(["if(!proc){",
             "CACHED[type]=proc=compile([", typesig.join(","), "])}",
             "return proc(", proc_args.join(","), ")}"].join(""))

  if(proc.debug) {
    console.log("-----Generated thunk:\n" + code.join("\n") + "\n----------")
  }
  
  //Compile thunk
  var thunk = new Function("compile", code.join("\n"))
  return thunk(compile.bind(undefined, proc))
}

module.exports = createThunk

},{"./compile.js":83}],85:[function(require,module,exports){
module.exports = require("cwise-compiler")
},{"cwise-compiler":82}],86:[function(require,module,exports){
!function() {
  var d3 = {
    version: "3.5.17"
  };
  var d3_arraySlice = [].slice, d3_array = function(list) {
    return d3_arraySlice.call(list);
  };
  var d3_document = this.document;
  function d3_documentElement(node) {
    return node && (node.ownerDocument || node.document || node).documentElement;
  }
  function d3_window(node) {
    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
  }
  if (d3_document) {
    try {
      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
    } catch (e) {
      d3_array = function(list) {
        var i = list.length, array = new Array(i);
        while (i--) array[i] = list[i];
        return array;
      };
    }
  }
  if (!Date.now) Date.now = function() {
    return +new Date();
  };
  if (d3_document) {
    try {
      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
    } catch (error) {
      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
      d3_element_prototype.setAttribute = function(name, value) {
        d3_element_setAttribute.call(this, name, value + "");
      };
      d3_element_prototype.setAttributeNS = function(space, local, value) {
        d3_element_setAttributeNS.call(this, space, local, value + "");
      };
      d3_style_prototype.setProperty = function(name, value, priority) {
        d3_style_setProperty.call(this, name, value + "", priority);
      };
    }
  }
  d3.ascending = d3_ascending;
  function d3_ascending(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  function d3_number(x) {
    return x === null ? NaN : +x;
  }
  function d3_numeric(x) {
    return !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
    } else {
      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.mean = function(array, f) {
    var s = 0, n = array.length, a, i = -1, j = n;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
    }
    if (j) return s / j;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.median = function(array, f) {
    var numbers = [], n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
    }
    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
  };
  d3.variance = function(array, f) {
    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) {
        if (d3_numeric(a = d3_number(array[i]))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    } else {
      while (++i < n) {
        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    }
    if (j > 1) return s / (j - 1);
  };
  d3.deviation = function() {
    var v = d3.variance.apply(this, arguments);
    return v ? Math.sqrt(v) : v;
  };
  function d3_bisector(compare) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  }
  var d3_bisect = d3_bisector(d3_ascending);
  d3.bisectLeft = d3_bisect.left;
  d3.bisect = d3.bisectRight = d3_bisect.right;
  d3.bisector = function(f) {
    return d3_bisector(f.length === 1 ? function(d, x) {
      return d3_ascending(f(d), x);
    } : f);
  };
  d3.shuffle = function(array, i0, i1) {
    if ((m = arguments.length) < 3) {
      i1 = array.length;
      if (m < 2) i0 = 0;
    }
    var m = i1 - i0, t, i;
    while (m) {
      i = Math.random() * m-- | 0;
      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
    }
    return array;
  };
  d3.permute = function(array, indexes) {
    var i = indexes.length, permutes = new Array(i);
    while (i--) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.pairs = function(array) {
    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
    return pairs;
  };
  d3.transpose = function(matrix) {
    if (!(n = matrix.length)) return [];
    for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
      for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
        row[j] = matrix[j][i];
      }
    }
    return transpose;
  };
  function d3_transposeLength(d) {
    return d.length;
  }
  d3.zip = function() {
    return d3.transpose(arguments);
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.merge = function(arrays) {
    var n = arrays.length, m, i = -1, j = 0, merged, array;
    while (++i < n) j += arrays[i].length;
    merged = new Array(j);
    while (--n >= 0) {
      array = arrays[n];
      m = array.length;
      while (--m >= 0) {
        merged[--j] = array[m];
      }
    }
    return merged;
  };
  var abs = Math.abs;
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  function d3_class(ctor, properties) {
    for (var key in properties) {
      Object.defineProperty(ctor.prototype, key, {
        value: properties[key],
        enumerable: false
      });
    }
  }
  d3.map = function(object, f) {
    var map = new d3_Map();
    if (object instanceof d3_Map) {
      object.forEach(function(key, value) {
        map.set(key, value);
      });
    } else if (Array.isArray(object)) {
      var i = -1, n = object.length, o;
      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
    } else {
      for (var key in object) map.set(key, object[key]);
    }
    return map;
  };
  function d3_Map() {
    this._ = Object.create(null);
  }
  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
  d3_class(d3_Map, {
    has: d3_map_has,
    get: function(key) {
      return this._[d3_map_escape(key)];
    },
    set: function(key, value) {
      return this._[d3_map_escape(key)] = value;
    },
    remove: d3_map_remove,
    keys: d3_map_keys,
    values: function() {
      var values = [];
      for (var key in this._) values.push(this._[key]);
      return values;
    },
    entries: function() {
      var entries = [];
      for (var key in this._) entries.push({
        key: d3_map_unescape(key),
        value: this._[key]
      });
      return entries;
    },
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
    }
  });
  function d3_map_escape(key) {
    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
  }
  function d3_map_unescape(key) {
    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
  }
  function d3_map_has(key) {
    return d3_map_escape(key) in this._;
  }
  function d3_map_remove(key) {
    return (key = d3_map_escape(key)) in this._ && delete this._[key];
  }
  function d3_map_keys() {
    var keys = [];
    for (var key in this._) keys.push(d3_map_unescape(key));
    return keys;
  }
  function d3_map_size() {
    var size = 0;
    for (var key in this._) ++size;
    return size;
  }
  function d3_map_empty() {
    for (var key in this._) return false;
    return true;
  }
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(mapType, array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      if (mapType) {
        object = mapType();
        setter = function(keyValue, values) {
          object.set(keyValue, map(mapType, values, depth));
        };
      } else {
        object = {};
        setter = function(keyValue, values) {
          object[keyValue] = map(mapType, values, depth);
        };
      }
      valuesByKey.forEach(setter);
      return object;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var array = [], sortKey = sortKeys[depth++];
      map.forEach(function(key, keyMap) {
        array.push({
          key: key,
          values: entries(keyMap, depth)
        });
      });
      return sortKey ? array.sort(function(a, b) {
        return sortKey(a.key, b.key);
      }) : array;
    }
    nest.map = function(array, mapType) {
      return map(mapType, array, 0);
    };
    nest.entries = function(array) {
      return entries(map(d3.map, array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.set = function(array) {
    var set = new d3_Set();
    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
    return set;
  };
  function d3_Set() {
    this._ = Object.create(null);
  }
  d3_class(d3_Set, {
    has: d3_map_has,
    add: function(key) {
      this._[d3_map_escape(key += "")] = true;
      return key;
    },
    remove: d3_map_remove,
    values: d3_map_keys,
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key));
    }
  });
  d3.behavior = {};
  function d3_identity(d) {
    return d;
  }
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return value === source ? target : value;
    };
  }
  function d3_vendorSymbol(object, name) {
    if (name in object) return name;
    name = name.charAt(0).toUpperCase() + name.slice(1);
    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
      var prefixName = d3_vendorPrefixes[i] + name;
      if (prefixName in object) return prefixName;
    }
  }
  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
  function d3_noop() {}
  d3.dispatch = function() {
    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i >= 0) {
      name = type.slice(i + 1);
      type = type.slice(0, i);
    }
    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
    if (arguments.length === 2) {
      if (listener == null) for (type in this) {
        if (this.hasOwnProperty(type)) this[type].on(name, null);
      }
      return this;
    }
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map();
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.event = null;
  function d3_eventPreventDefault() {
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  var d3_subclass = {}.__proto__ ? function(object, prototype) {
    object.__proto__ = prototype;
  } : function(object, prototype) {
    for (var property in prototype) object[property] = prototype[property];
  };
  function d3_selection(groups) {
    d3_subclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectMatches = function(n, s) {
    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
    d3_selectMatches = function(n, s) {
      return d3_selectMatcher.call(n, s);
    };
    return d3_selectMatches(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = Sizzle;
    d3_selectMatches = Sizzle.matchesSelector;
  }
  d3.selection = function() {
    return d3.select(d3_document.documentElement);
  };
  var d3_selectionPrototype = d3.selection.prototype = [];
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_selectAll(selector, this);
    };
  }
  var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: d3_nsXhtml,
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3_selectionPrototype.attr = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node();
        name = d3.ns.qualify(name);
        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
      }
      for (value in name) this.each(d3_selection_attr(value, name[value]));
      return this;
    }
    return this.each(d3_selection_attr(name, value));
  };
  function d3_selection_attr(name, value) {
    name = d3.ns.qualify(name);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
  }
  function d3_collapse(s) {
    return s.trim().replace(/\s+/g, " ");
  }
  d3_selectionPrototype.classed = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
        if (value = node.classList) {
          while (++i < n) if (!value.contains(name[i])) return false;
        } else {
          value = node.getAttribute("class");
          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
        }
        return true;
      }
      for (value in name) this.each(d3_selection_classed(value, name[value]));
      return this;
    }
    return this.each(d3_selection_classed(name, value));
  };
  function d3_selection_classedRe(name) {
    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
  }
  function d3_selection_classes(name) {
    return (name + "").trim().split(/^|\s+/);
  }
  function d3_selection_classed(name, value) {
    name = d3_selection_classes(name).map(d3_selection_classedName);
    var n = name.length;
    function classedConstant() {
      var i = -1;
      while (++i < n) name[i](this, value);
    }
    function classedFunction() {
      var i = -1, x = value.apply(this, arguments);
      while (++i < n) name[i](this, x);
    }
    return typeof value === "function" ? classedFunction : classedConstant;
  }
  function d3_selection_classedName(name) {
    var re = d3_selection_classedRe(name);
    return function(node, value) {
      if (c = node.classList) return value ? c.add(name) : c.remove(name);
      var c = node.getAttribute("class") || "";
      if (value) {
        re.lastIndex = 0;
        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
      } else {
        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
      }
    };
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
        return this;
      }
      if (n < 2) {
        var node = this.node();
        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
      }
      priority = "";
    }
    return this.each(d3_selection_style(name, value, priority));
  };
  function d3_selection_style(name, value, priority) {
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
  }
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") return this.node()[name];
      for (value in name) this.each(d3_selection_property(value, name[value]));
      return this;
    }
    return this.each(d3_selection_property(name, value));
  };
  function d3_selection_property(name, value) {
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
  }
  d3_selectionPrototype.text = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    }) : this.node().textContent;
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    }) : this.node().innerHTML;
  };
  d3_selectionPrototype.append = function(name) {
    name = d3_selection_creator(name);
    return this.select(function() {
      return this.appendChild(name.apply(this, arguments));
    });
  };
  function d3_selection_creator(name) {
    function create() {
      var document = this.ownerDocument, namespace = this.namespaceURI;
      return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
    }
    function createNS() {
      return this.ownerDocument.createElementNS(name.space, name.local);
    }
    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
  }
  d3_selectionPrototype.insert = function(name, before) {
    name = d3_selection_creator(name);
    before = d3_selection_selector(before);
    return this.select(function() {
      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
    });
  };
  d3_selectionPrototype.remove = function() {
    return this.each(d3_selectionRemove);
  };
  function d3_selectionRemove() {
    var parent = this.parentNode;
    if (parent) parent.removeChild(this);
  }
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
        for (i = -1; ++i < n; ) {
          if (node = group[i]) {
            if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
              exitNodes[i] = node;
            } else {
              nodeByKeyValue.set(keyValue, node);
            }
            keyValues[i] = keyValue;
          }
        }
        for (i = -1; ++i < m; ) {
          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          } else if (node !== true) {
            updateNodes[i] = node;
            node.__data__ = nodeData;
          }
          nodeByKeyValue.set(keyValue, true);
        }
        for (i = -1; ++i < n; ) {
          if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
        }
        for (;i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
        }
        for (;i < n; ++i) {
          exitNodes[i] = group[i];
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = function(value) {
    return arguments.length ? this.property("__data__", value) : this.property("__data__");
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3_ascending;
    return function(a, b) {
      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
    };
  }
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    var args = d3_array(arguments);
    callback.apply(args[0] = this, args);
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function() {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.size = function() {
    var n = 0;
    d3_selection_each(this, function() {
      ++n;
    });
    return n;
  };
  function d3_selection_enter(selection) {
    d3_subclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  d3_selection_enterPrototype.insert = function(name, before) {
    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
    return d3_selectionPrototype.insert.call(this, name, before);
  };
  function d3_selection_enterInsertBefore(enter) {
    var i0, j0;
    return function(d, i, j) {
      var group = enter[j].update, n = group.length, node;
      if (j != j0) j0 = j, i0 = 0;
      if (i >= i0) i0 = i + 1;
      while (!(node = group[i0]) && ++i0 < n) ;
      return node;
    };
  }
  d3.select = function(node) {
    var group;
    if (typeof node === "string") {
      group = [ d3_select(node, d3_document) ];
      group.parentNode = d3_document.documentElement;
    } else {
      group = [ node ];
      group.parentNode = d3_documentElement(node);
    }
    return d3_selection([ group ]);
  };
  d3.selectAll = function(nodes) {
    var group;
    if (typeof nodes === "string") {
      group = d3_array(d3_selectAll(nodes, d3_document));
      group.parentNode = d3_document.documentElement;
    } else {
      group = d3_array(nodes);
      group.parentNode = null;
    }
    return d3_selection([ group ]);
  };
  d3_selectionPrototype.on = function(type, listener, capture) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof type !== "string") {
        if (n < 2) listener = false;
        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
        return this;
      }
      if (n < 2) return (n = this.node()["__on" + type]) && n._;
      capture = false;
    }
    return this.each(d3_selection_on(type, listener, capture));
  };
  function d3_selection_on(type, listener, capture) {
    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
    if (i > 0) type = type.slice(0, i);
    var filter = d3_selection_onFilters.get(type);
    if (filter) type = filter, wrap = d3_selection_onFilter;
    function onRemove() {
      var l = this[name];
      if (l) {
        this.removeEventListener(type, l, l.$);
        delete this[name];
      }
    }
    function onAdd() {
      var l = wrap(listener, d3_array(arguments));
      onRemove.call(this);
      this.addEventListener(type, this[name] = l, l.$ = capture);
      l._ = listener;
    }
    function removeAll() {
      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
      for (var name in this) {
        if (match = name.match(re)) {
          var l = this[name];
          this.removeEventListener(match[1], l, l.$);
          delete this[name];
        }
      }
    }
    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
  }
  var d3_selection_onFilters = d3.map({
    mouseenter: "mouseover",
    mouseleave: "mouseout"
  });
  if (d3_document) {
    d3_selection_onFilters.forEach(function(k) {
      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
    });
  }
  function d3_selection_onListener(listener, argumentz) {
    return function(e) {
      var o = d3.event;
      d3.event = e;
      argumentz[0] = this.__data__;
      try {
        listener.apply(this, argumentz);
      } finally {
        d3.event = o;
      }
    };
  }
  function d3_selection_onFilter(listener, argumentz) {
    var l = d3_selection_onListener(listener, argumentz);
    return function(e) {
      var target = this, related = e.relatedTarget;
      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
        l.call(target, e);
      }
    };
  }
  var d3_event_dragSelect, d3_event_dragId = 0;
  function d3_event_dragSuppress(node) {
    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
    if (d3_event_dragSelect == null) {
      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
    }
    if (d3_event_dragSelect) {
      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
      style[d3_event_dragSelect] = "none";
    }
    return function(suppressClick) {
      w.on(name, null);
      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
      if (suppressClick) {
        var off = function() {
          w.on(click, null);
        };
        w.on(click, function() {
          d3_eventPreventDefault();
          off();
        }, true);
        setTimeout(off, 0);
      }
    };
  }
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    if (e.changedTouches) e = e.changedTouches[0];
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0) {
        var window = d3_window(container);
        if (window.scrollX || window.scrollY) {
          svg = d3.select("body").append("svg").style({
            position: "absolute",
            top: 0,
            left: 0,
            margin: 0,
            padding: 0,
            border: "none"
          }, "important");
          var ctm = svg[0][0].getScreenCTM();
          d3_mouse_bug44083 = !(ctm.f || ctm.e);
          svg.remove();
        }
      }
      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
      point.y = e.clientY;
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touch = function(container, touches, identifier) {
    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
      if ((touch = touches[i]).identifier === identifier) {
        return d3_mousePoint(container, touch);
      }
    }
  };
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
    }
    function dragstart(id, position, subject, move, end) {
      return function() {
        var that = this, target = d3.event.target.correspondingElement || d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
        if (origin) {
          dragOffset = origin.apply(that, arguments);
          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
        } else {
          dragOffset = [ 0, 0 ];
        }
        dispatch({
          type: "dragstart"
        });
        function moved() {
          var position1 = position(parent, dragId), dx, dy;
          if (!position1) return;
          dx = position1[0] - position0[0];
          dy = position1[1] - position0[1];
          dragged |= dx | dy;
          position0 = position1;
          dispatch({
            type: "drag",
            x: position1[0] + dragOffset[0],
            y: position1[1] + dragOffset[1],
            dx: dx,
            dy: dy
          });
        }
        function ended() {
          if (!position(parent, dragId)) return;
          dragSubject.on(move + dragName, null).on(end + dragName, null);
          dragRestore(dragged);
          dispatch({
            type: "dragend"
          });
        }
      };
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  function d3_behavior_dragTouchId() {
    return d3.event.changedTouches[0].identifier;
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
  function d3_sgn(x) {
    return x > 0 ? 1 : x < 0 ? -1 : 0;
  }
  function d3_cross2d(a, b, c) {
    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
  }
  function d3_acos(x) {
    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
  }
  function d3_asin(x) {
    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
  }
  function d3_sinh(x) {
    return ((x = Math.exp(x)) - 1 / x) / 2;
  }
  function d3_cosh(x) {
    return ((x = Math.exp(x)) + 1 / x) / 2;
  }
  function d3_tanh(x) {
    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
  }
  function d3_haversin(x) {
    return (x = Math.sin(x / 2)) * x;
  }
  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
  d3.interpolateZoom = function(p0, p1) {
    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
    if (d2 < ε2) {
      S = Math.log(w1 / w0) / ρ;
      i = function(t) {
        return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
      };
    } else {
      var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
      S = (r1 - r0) / ρ;
      i = function(t) {
        var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
      };
    }
    i.duration = S * 1e3;
    return i;
  };
  d3.behavior.zoom = function() {
    var view = {
      x: 0,
      y: 0,
      k: 1
    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
    if (!d3_behavior_zoomWheel) {
      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return d3.event.wheelDelta;
      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
        return -d3.event.detail;
      }, "MozMousePixelScroll");
    }
    function zoom(g) {
      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
    }
    zoom.event = function(g) {
      g.each(function() {
        var dispatch = event.of(this, arguments), view1 = view;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.zoom", function() {
            view = this.__chart__ || {
              x: 0,
              y: 0,
              k: 1
            };
            zoomstarted(dispatch);
          }).tween("zoom:zoom", function() {
            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
            return function(t) {
              var l = i(t), k = dx / l[2];
              this.__chart__ = view = {
                x: cx - l[0] * k,
                y: cy - l[1] * k,
                k: k
              };
              zoomed(dispatch);
            };
          }).each("interrupt.zoom", function() {
            zoomended(dispatch);
          }).each("end.zoom", function() {
            zoomended(dispatch);
          });
        } else {
          this.__chart__ = view;
          zoomstarted(dispatch);
          zoomed(dispatch);
          zoomended(dispatch);
        }
      });
    };
    zoom.translate = function(_) {
      if (!arguments.length) return [ view.x, view.y ];
      view = {
        x: +_[0],
        y: +_[1],
        k: view.k
      };
      rescale();
      return zoom;
    };
    zoom.scale = function(_) {
      if (!arguments.length) return view.k;
      view = {
        x: view.x,
        y: view.y,
        k: null
      };
      scaleTo(+_);
      rescale();
      return zoom;
    };
    zoom.scaleExtent = function(_) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.center = function(_) {
      if (!arguments.length) return center;
      center = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.size = function(_) {
      if (!arguments.length) return size;
      size = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.duration = function(_) {
      if (!arguments.length) return duration;
      duration = +_;
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    function location(p) {
      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
    }
    function point(l) {
      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
    }
    function scaleTo(s) {
      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      view.x += p[0] - l[0];
      view.y += p[1] - l[1];
    }
    function zoomTo(that, p, l, k) {
      that.__chart__ = {
        x: view.x,
        y: view.y,
        k: view.k
      };
      scaleTo(Math.pow(2, k));
      translateTo(center0 = p, l);
      that = d3.select(that);
      if (duration > 0) that = that.transition().duration(duration);
      that.call(zoom.event);
    }
    function rescale() {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - view.x) / view.k;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - view.y) / view.k;
      }).map(y0.invert));
    }
    function zoomstarted(dispatch) {
      if (!zooming++) dispatch({
        type: "zoomstart"
      });
    }
    function zoomed(dispatch) {
      rescale();
      dispatch({
        type: "zoom",
        scale: view.k,
        translate: [ view.x, view.y ]
      });
    }
    function zoomended(dispatch) {
      if (!--zooming) dispatch({
        type: "zoomend"
      }), center0 = null;
    }
    function mousedowned() {
      var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
      d3_selection_interrupt.call(that);
      zoomstarted(dispatch);
      function moved() {
        dragged = 1;
        translateTo(d3.mouse(that), location0);
        zoomed(dispatch);
      }
      function ended() {
        subject.on(mousemove, null).on(mouseup, null);
        dragRestore(dragged);
        zoomended(dispatch);
      }
    }
    function touchstarted() {
      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
      started();
      zoomstarted(dispatch);
      subject.on(mousedown, null).on(touchstart, started);
      function relocate() {
        var touches = d3.touches(that);
        scale0 = view.k;
        touches.forEach(function(t) {
          if (t.identifier in locations0) locations0[t.identifier] = location(t);
        });
        return touches;
      }
      function started() {
        var target = d3.event.target;
        d3.select(target).on(touchmove, moved).on(touchend, ended);
        targets.push(target);
        var changed = d3.event.changedTouches;
        for (var i = 0, n = changed.length; i < n; ++i) {
          locations0[changed[i].identifier] = null;
        }
        var touches = relocate(), now = Date.now();
        if (touches.length === 1) {
          if (now - touchtime < 500) {
            var p = touches[0];
            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
            d3_eventPreventDefault();
          }
          touchtime = now;
        } else if (touches.length > 1) {
          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
          distance0 = dx * dx + dy * dy;
        }
      }
      function moved() {
        var touches = d3.touches(that), p0, l0, p1, l1;
        d3_selection_interrupt.call(that);
        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
          p1 = touches[i];
          if (l1 = locations0[p1.identifier]) {
            if (l0) break;
            p0 = p1, l0 = l1;
          }
        }
        if (l1) {
          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
          scaleTo(scale1 * scale0);
        }
        touchtime = null;
        translateTo(p0, l0);
        zoomed(dispatch);
      }
      function ended() {
        if (d3.event.touches.length) {
          var changed = d3.event.changedTouches;
          for (var i = 0, n = changed.length; i < n; ++i) {
            delete locations0[changed[i].identifier];
          }
          for (var identifier in locations0) {
            return void relocate();
          }
        }
        d3.selectAll(targets).on(zoomName, null);
        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
        dragRestore();
        zoomended(dispatch);
      }
    }
    function mousewheeled() {
      var dispatch = event.of(this, arguments);
      if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this), 
      translate0 = location(center0 = center || d3.mouse(this)), zoomstarted(dispatch);
      mousewheelTimer = setTimeout(function() {
        mousewheelTimer = null;
        zoomended(dispatch);
      }, 50);
      d3_eventPreventDefault();
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
      translateTo(center0, translate0);
      zoomed(dispatch);
    }
    function dblclicked() {
      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
  d3.color = d3_color;
  function d3_color() {}
  d3_color.prototype.toString = function() {
    return this.rgb() + "";
  };
  d3.hsl = d3_hsl;
  function d3_hsl(h, s, l) {
    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
  }
  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
  d3_hslPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, this.l / k);
  };
  d3_hslPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, k * this.l);
  };
  d3_hslPrototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  d3.hcl = d3_hcl;
  function d3_hcl(h, c, l) {
    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
  }
  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
  d3_hclPrototype.brighter = function(k) {
    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.darker = function(k) {
    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.rgb = function() {
    return d3_hcl_lab(this.h, this.c, this.l).rgb();
  };
  function d3_hcl_lab(h, c, l) {
    if (isNaN(h)) h = 0;
    if (isNaN(c)) c = 0;
    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
  }
  d3.lab = d3_lab;
  function d3_lab(l, a, b) {
    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
  }
  var d3_lab_K = 18;
  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
  var d3_labPrototype = d3_lab.prototype = new d3_color();
  d3_labPrototype.brighter = function(k) {
    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.darker = function(k) {
    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.rgb = function() {
    return d3_lab_rgb(this.l, this.a, this.b);
  };
  function d3_lab_rgb(l, a, b) {
    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
    x = d3_lab_xyz(x) * d3_lab_X;
    y = d3_lab_xyz(y) * d3_lab_Y;
    z = d3_lab_xyz(z) * d3_lab_Z;
    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
  }
  function d3_lab_hcl(l, a, b) {
    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
  }
  function d3_lab_xyz(x) {
    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
  }
  function d3_xyz_lab(x) {
    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
  }
  function d3_xyz_rgb(r) {
    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
  }
  d3.rgb = d3_rgb;
  function d3_rgb(r, g, b) {
    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
  }
  function d3_rgbNumber(value) {
    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
  }
  function d3_rgbString(value) {
    return d3_rgbNumber(value) + "";
  }
  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
  d3_rgbPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return new d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
  };
  d3_rgbPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_rgb(k * this.r, k * this.g, k * this.b);
  };
  d3_rgbPrototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_rgbPrototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, color;
    m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }

       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (color = d3_rgb_names.get(format)) {
      return rgb(color.r, color.g, color.b);
    }
    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
      if (format.length === 4) {
        r = (color & 3840) >> 4;
        r = r >> 4 | r;
        g = color & 240;
        g = g >> 4 | g;
        b = color & 15;
        b = b << 4 | b;
      } else if (format.length === 7) {
        r = (color & 16711680) >> 16;
        g = (color & 65280) >> 8;
        b = color & 255;
      }
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      h = NaN;
      s = l > 0 && l < 1 ? 0 : h;
    }
    return new d3_hsl(h, s, l);
  }
  function d3_rgb_lab(r, g, b) {
    r = d3_rgb_xyz(r);
    g = d3_rgb_xyz(g);
    b = d3_rgb_xyz(b);
    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
  }
  function d3_rgb_xyz(r) {
    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: 15792383,
    antiquewhite: 16444375,
    aqua: 65535,
    aquamarine: 8388564,
    azure: 15794175,
    beige: 16119260,
    bisque: 16770244,
    black: 0,
    blanchedalmond: 16772045,
    blue: 255,
    blueviolet: 9055202,
    brown: 10824234,
    burlywood: 14596231,
    cadetblue: 6266528,
    chartreuse: 8388352,
    chocolate: 13789470,
    coral: 16744272,
    cornflowerblue: 6591981,
    cornsilk: 16775388,
    crimson: 14423100,
    cyan: 65535,
    darkblue: 139,
    darkcyan: 35723,
    darkgoldenrod: 12092939,
    darkgray: 11119017,
    darkgreen: 25600,
    darkgrey: 11119017,
    darkkhaki: 12433259,
    darkmagenta: 9109643,
    darkolivegreen: 5597999,
    darkorange: 16747520,
    darkorchid: 10040012,
    darkred: 9109504,
    darksalmon: 15308410,
    darkseagreen: 9419919,
    darkslateblue: 4734347,
    darkslategray: 3100495,
    darkslategrey: 3100495,
    darkturquoise: 52945,
    darkviolet: 9699539,
    deeppink: 16716947,
    deepskyblue: 49151,
    dimgray: 6908265,
    dimgrey: 6908265,
    dodgerblue: 2003199,
    firebrick: 11674146,
    floralwhite: 16775920,
    forestgreen: 2263842,
    fuchsia: 16711935,
    gainsboro: 14474460,
    ghostwhite: 16316671,
    gold: 16766720,
    goldenrod: 14329120,
    gray: 8421504,
    green: 32768,
    greenyellow: 11403055,
    grey: 8421504,
    honeydew: 15794160,
    hotpink: 16738740,
    indianred: 13458524,
    indigo: 4915330,
    ivory: 16777200,
    khaki: 15787660,
    lavender: 15132410,
    lavenderblush: 16773365,
    lawngreen: 8190976,
    lemonchiffon: 16775885,
    lightblue: 11393254,
    lightcoral: 15761536,
    lightcyan: 14745599,
    lightgoldenrodyellow: 16448210,
    lightgray: 13882323,
    lightgreen: 9498256,
    lightgrey: 13882323,
    lightpink: 16758465,
    lightsalmon: 16752762,
    lightseagreen: 2142890,
    lightskyblue: 8900346,
    lightslategray: 7833753,
    lightslategrey: 7833753,
    lightsteelblue: 11584734,
    lightyellow: 16777184,
    lime: 65280,
    limegreen: 3329330,
    linen: 16445670,
    magenta: 16711935,
    maroon: 8388608,
    mediumaquamarine: 6737322,
    mediumblue: 205,
    mediumorchid: 12211667,
    mediumpurple: 9662683,
    mediumseagreen: 3978097,
    mediumslateblue: 8087790,
    mediumspringgreen: 64154,
    mediumturquoise: 4772300,
    mediumvioletred: 13047173,
    midnightblue: 1644912,
    mintcream: 16121850,
    mistyrose: 16770273,
    moccasin: 16770229,
    navajowhite: 16768685,
    navy: 128,
    oldlace: 16643558,
    olive: 8421376,
    olivedrab: 7048739,
    orange: 16753920,
    orangered: 16729344,
    orchid: 14315734,
    palegoldenrod: 15657130,
    palegreen: 10025880,
    paleturquoise: 11529966,
    palevioletred: 14381203,
    papayawhip: 16773077,
    peachpuff: 16767673,
    peru: 13468991,
    pink: 16761035,
    plum: 14524637,
    powderblue: 11591910,
    purple: 8388736,
    rebeccapurple: 6697881,
    red: 16711680,
    rosybrown: 12357519,
    royalblue: 4286945,
    saddlebrown: 9127187,
    salmon: 16416882,
    sandybrown: 16032864,
    seagreen: 3050327,
    seashell: 16774638,
    sienna: 10506797,
    silver: 12632256,
    skyblue: 8900331,
    slateblue: 6970061,
    slategray: 7372944,
    slategrey: 7372944,
    snow: 16775930,
    springgreen: 65407,
    steelblue: 4620980,
    tan: 13808780,
    teal: 32896,
    thistle: 14204888,
    tomato: 16737095,
    turquoise: 4251856,
    violet: 15631086,
    wheat: 16113331,
    white: 16777215,
    whitesmoke: 16119285,
    yellow: 16776960,
    yellowgreen: 10145074
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgbNumber(value));
  });
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  d3.xhr = d3_xhrType(d3_identity);
  function d3_xhrType(response) {
    return function(url, mimeType, callback) {
      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
      mimeType = null;
      return d3_xhr(url, mimeType, response, callback);
    };
  }
  function d3_xhr(url, mimeType, response, callback) {
    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
      request.readyState > 3 && respond();
    };
    function respond() {
      var status = request.status, result;
      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
        try {
          result = response.call(xhr, request);
        } catch (e) {
          dispatch.error.call(xhr, e);
          return;
        }
        dispatch.load.call(xhr, result);
      } else {
        dispatch.error.call(xhr, request);
      }
    }
    request.onprogress = function(event) {
      var o = d3.event;
      d3.event = event;
      try {
        dispatch.progress.call(xhr, request);
      } finally {
        d3.event = o;
      }
    };
    xhr.header = function(name, value) {
      name = (name + "").toLowerCase();
      if (arguments.length < 2) return headers[name];
      if (value == null) delete headers[name]; else headers[name] = value + "";
      return xhr;
    };
    xhr.mimeType = function(value) {
      if (!arguments.length) return mimeType;
      mimeType = value == null ? null : value + "";
      return xhr;
    };
    xhr.responseType = function(value) {
      if (!arguments.length) return responseType;
      responseType = value;
      return xhr;
    };
    xhr.response = function(value) {
      response = value;
      return xhr;
    };
    [ "get", "post" ].forEach(function(method) {
      xhr[method] = function() {
        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
      };
    });
    xhr.send = function(method, data, callback) {
      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
      request.open(method, url, true);
      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
      if (responseType != null) request.responseType = responseType;
      if (callback != null) xhr.on("error", callback).on("load", function(request) {
        callback(null, request);
      });
      dispatch.beforesend.call(xhr, request);
      request.send(data == null ? null : data);
      return xhr;
    };
    xhr.abort = function() {
      request.abort();
      return xhr;
    };
    d3.rebind(xhr, dispatch, "on");
    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
  }
  function d3_xhr_fixCallback(callback) {
    return callback.length === 1 ? function(error, request) {
      callback(error == null ? request : null);
    } : callback;
  }
  function d3_xhrHasResponse(request) {
    var type = request.responseType;
    return type && type !== "text" ? request.response : request.responseText;
  }
  d3.dsv = function(delimiter, mimeType) {
    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
    function dsv(url, row, callback) {
      if (arguments.length < 3) callback = row, row = null;
      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
      xhr.row = function(_) {
        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
      };
      return xhr;
    }
    function response(request) {
      return dsv.parse(request.responseText);
    }
    function typedResponse(f) {
      return function(request) {
        return dsv.parse(request.responseText, f);
      };
    }
    dsv.parse = function(text, f) {
      var o;
      return dsv.parseRows(text, function(row, i) {
        if (o) return o(row, i - 1);
        var a = new Function("d", "return {" + row.map(function(name, i) {
          return JSON.stringify(name) + ": d[" + i + "]";
        }).join(",") + "}");
        o = f ? function(row, i) {
          return f(a(row), i);
        } : a;
      });
    };
    dsv.parseRows = function(text, f) {
      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
      function token() {
        if (I >= N) return EOF;
        if (eol) return eol = false, EOL;
        var j = I;
        if (text.charCodeAt(j) === 34) {
          var i = j;
          while (i++ < N) {
            if (text.charCodeAt(i) === 34) {
              if (text.charCodeAt(i + 1) !== 34) break;
              ++i;
            }
          }
          I = i + 2;
          var c = text.charCodeAt(i + 1);
          if (c === 13) {
            eol = true;
            if (text.charCodeAt(i + 2) === 10) ++I;
          } else if (c === 10) {
            eol = true;
          }
          return text.slice(j + 1, i).replace(/""/g, '"');
        }
        while (I < N) {
          var c = text.charCodeAt(I++), k = 1;
          if (c === 10) eol = true; else if (c === 13) {
            eol = true;
            if (text.charCodeAt(I) === 10) ++I, ++k;
          } else if (c !== delimiterCode) continue;
          return text.slice(j, I - k);
        }
        return text.slice(j);
      }
      while ((t = token()) !== EOF) {
        var a = [];
        while (t !== EOL && t !== EOF) {
          a.push(t);
          t = token();
        }
        if (f && (a = f(a, n++)) == null) continue;
        rows.push(a);
      }
      return rows;
    };
    dsv.format = function(rows) {
      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
      var fieldSet = new d3_Set(), fields = [];
      rows.forEach(function(row) {
        for (var field in row) {
          if (!fieldSet.has(field)) {
            fields.push(fieldSet.add(field));
          }
        }
      });
      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
        return fields.map(function(field) {
          return formatValue(row[field]);
        }).join(delimiter);
      })).join("\n");
    };
    dsv.formatRows = function(rows) {
      return rows.map(formatRow).join("\n");
    };
    function formatRow(row) {
      return row.map(formatValue).join(delimiter);
    }
    function formatValue(text) {
      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
    }
    return dsv;
  };
  d3.csv = d3.dsv(",", "text/csv");
  d3.tsv = d3.dsv("	", "text/tab-separated-values");
  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
    setTimeout(callback, 17);
  };
  d3.timer = function() {
    d3_timer.apply(this, arguments);
  };
  function d3_timer(callback, delay, then) {
    var n = arguments.length;
    if (n < 2) delay = 0;
    if (n < 3) then = Date.now();
    var time = then + delay, timer = {
      c: callback,
      t: time,
      n: null
    };
    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
    d3_timer_queueTail = timer;
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
    return timer;
  }
  function d3_timer_step() {
    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    d3_timer_mark();
    d3_timer_sweep();
  };
  function d3_timer_mark() {
    var now = Date.now(), timer = d3_timer_queueHead;
    while (timer) {
      if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
      timer = timer.n;
    }
    return now;
  }
  function d3_timer_sweep() {
    var t0, t1 = d3_timer_queueHead, time = Infinity;
    while (t1) {
      if (t1.c) {
        if (t1.t < time) time = t1.t;
        t1 = (t0 = t1).n;
      } else {
        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
      }
    }
    d3_timer_queueTail = t0;
    return time;
  }
  function d3_format_precision(x, p) {
    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
  }
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value = +value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  function d3_locale_numberFormat(locale) {
    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
      while (i > 0 && g > 0) {
        if (length + g + 1 > width) g = Math.max(1, width - length);
        t.push(value.substring(i -= g, i + g));
        if ((length += g + 1) > width) break;
        g = locale_grouping[j = (j + 1) % locale_grouping.length];
      }
      return t.reverse().join(locale_thousands);
    } : d3_identity;
    return function(specifier) {
      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
      if (precision) precision = +precision.substring(1);
      if (zfill || fill === "0" && align === "=") {
        zfill = fill = "0";
        align = "=";
      }
      switch (type) {
       case "n":
        comma = true;
        type = "g";
        break;

       case "%":
        scale = 100;
        suffix = "%";
        type = "f";
        break;

       case "p":
        scale = 100;
        suffix = "%";
        type = "r";
        break;

       case "b":
       case "o":
       case "x":
       case "X":
        if (symbol === "#") prefix = "0" + type.toLowerCase();

       case "c":
        exponent = false;

       case "d":
        integer = true;
        precision = 0;
        break;

       case "s":
        scale = -1;
        type = "r";
        break;
      }
      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
      if (type == "r" && !precision) type = "g";
      if (precision != null) {
        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
      }
      type = d3_format_types.get(type) || d3_format_typeDefault;
      var zcomma = zfill && comma;
      return function(value) {
        var fullSuffix = suffix;
        if (integer && value % 1) return "";
        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
        if (scale < 0) {
          var unit = d3.formatPrefix(value, precision);
          value = unit.scale(value);
          fullSuffix = unit.symbol + suffix;
        } else {
          value *= scale;
        }
        value = type(value, precision);
        var i = value.lastIndexOf("."), before, after;
        if (i < 0) {
          var j = exponent ? value.lastIndexOf("e") : -1;
          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
        } else {
          before = value.substring(0, i);
          after = locale_decimal + value.substring(i + 1);
        }
        if (!zfill && comma) before = formatGroup(before, Infinity);
        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
        negative += prefix;
        value = before + after;
        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
      };
    };
  }
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
  var d3_format_types = d3.map({
    b: function(x) {
      return x.toString(2);
    },
    c: function(x) {
      return String.fromCharCode(x);
    },
    o: function(x) {
      return x.toString(8);
    },
    x: function(x) {
      return x.toString(16);
    },
    X: function(x) {
      return x.toString(16).toUpperCase();
    },
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
    }
  });
  function d3_format_typeDefault(x) {
    return x + "";
  }
  var d3_time = d3.time = {}, d3_date = Date;
  function d3_date_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_date_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_date(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_date(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_date = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_date = Date;
      }
    };
  }
  d3_time.year = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3_time.years = d3_time.year.range;
  d3_time.years.utc = d3_time.year.utc.range;
  d3_time.day = d3_time_interval(function(date) {
    var day = new d3_date(2e3, 0);
    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3_time.days = d3_time.day.range;
  d3_time.days.utc = d3_time.day.utc.range;
  d3_time.dayOfYear = function(date) {
    var year = d3_time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
    i = 7 - i;
    var interval = d3_time[day] = d3_time_interval(function(date) {
      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3_time[day + "s"] = interval.range;
    d3_time[day + "s"].utc = interval.utc.range;
    d3_time[day + "OfYear"] = function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3_time.week = d3_time.sunday;
  d3_time.weeks = d3_time.sunday.range;
  d3_time.weeks.utc = d3_time.sunday.utc.range;
  d3_time.weekOfYear = d3_time.sundayOfYear;
  function d3_locale_timeFormat(locale) {
    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
    function d3_time_format(template) {
      var n = template.length;
      function format(date) {
        var string = [], i = -1, j = 0, c, p, f;
        while (++i < n) {
          if (template.charCodeAt(i) === 37) {
            string.push(template.slice(j, i));
            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
            string.push(c);
            j = i + 1;
          }
        }
        string.push(template.slice(j, i));
        return string.join("");
      }
      format.parse = function(string) {
        var d = {
          y: 1900,
          m: 0,
          d: 1,
          H: 0,
          M: 0,
          S: 0,
          L: 0,
          Z: null
        }, i = d3_time_parse(d, template, string, 0);
        if (i != string.length) return null;
        if ("p" in d) d.H = d.H % 12 + d.p * 12;
        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d || "U" in d) {
          if (!("w" in d)) d.w = "W" in d ? 1 : 0;
          date.setFullYear(d.y, 0, 1);
          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
        } else date.setFullYear(d.y, d.m, d.d);
        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
        return localZ ? date._ : date;
      };
      format.toString = function() {
        return template;
      };
      return format;
    }
    function d3_time_parse(date, template, string, j) {
      var c, p, t, i = 0, n = template.length, m = string.length;
      while (i < n) {
        if (j >= m) return -1;
        c = template.charCodeAt(i++);
        if (c === 37) {
          t = template.charAt(i++);
          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
          if (!p || (j = p(date, string, j)) < 0) return -1;
        } else if (c != string.charCodeAt(j++)) {
          return -1;
        }
      }
      return j;
    }
    d3_time_format.utc = function(template) {
      var local = d3_time_format(template);
      function format(date) {
        try {
          d3_date = d3_date_utc;
          var utc = new d3_date();
          utc._ = date;
          return local(utc);
        } finally {
          d3_date = Date;
        }
      }
      format.parse = function(string) {
        try {
          d3_date = d3_date_utc;
          var date = local.parse(string);
          return date && date._;
        } finally {
          d3_date = Date;
        }
      };
      format.toString = local.toString;
      return format;
    };
    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
    locale_periods.forEach(function(p, i) {
      d3_time_periodLookup.set(p.toLowerCase(), i);
    });
    var d3_time_formats = {
      a: function(d) {
        return locale_shortDays[d.getDay()];
      },
      A: function(d) {
        return locale_days[d.getDay()];
      },
      b: function(d) {
        return locale_shortMonths[d.getMonth()];
      },
      B: function(d) {
        return locale_months[d.getMonth()];
      },
      c: d3_time_format(locale_dateTime),
      d: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      e: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      H: function(d, p) {
        return d3_time_formatPad(d.getHours(), p, 2);
      },
      I: function(d, p) {
        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
      },
      j: function(d, p) {
        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
      },
      L: function(d, p) {
        return d3_time_formatPad(d.getMilliseconds(), p, 3);
      },
      m: function(d, p) {
        return d3_time_formatPad(d.getMonth() + 1, p, 2);
      },
      M: function(d, p) {
        return d3_time_formatPad(d.getMinutes(), p, 2);
      },
      p: function(d) {
        return locale_periods[+(d.getHours() >= 12)];
      },
      S: function(d, p) {
        return d3_time_formatPad(d.getSeconds(), p, 2);
      },
      U: function(d, p) {
        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
      },
      w: function(d) {
        return d.getDay();
      },
      W: function(d, p) {
        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
      },
      x: d3_time_format(locale_date),
      X: d3_time_format(locale_time),
      y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
      },
      Y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
      },
      Z: d3_time_zone,
      "%": function() {
        return "%";
      }
    };
    var d3_time_parsers = {
      a: d3_time_parseWeekdayAbbrev,
      A: d3_time_parseWeekday,
      b: d3_time_parseMonthAbbrev,
      B: d3_time_parseMonth,
      c: d3_time_parseLocaleFull,
      d: d3_time_parseDay,
      e: d3_time_parseDay,
      H: d3_time_parseHour24,
      I: d3_time_parseHour24,
      j: d3_time_parseDayOfYear,
      L: d3_time_parseMilliseconds,
      m: d3_time_parseMonthNumber,
      M: d3_time_parseMinutes,
      p: d3_time_parseAmPm,
      S: d3_time_parseSeconds,
      U: d3_time_parseWeekNumberSunday,
      w: d3_time_parseWeekdayNumber,
      W: d3_time_parseWeekNumberMonday,
      x: d3_time_parseLocaleDate,
      X: d3_time_parseLocaleTime,
      y: d3_time_parseYear,
      Y: d3_time_parseFullYear,
      Z: d3_time_parseZone,
      "%": d3_time_parseLiteralPercent
    };
    function d3_time_parseWeekdayAbbrev(date, string, i) {
      d3_time_dayAbbrevRe.lastIndex = 0;
      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseWeekday(date, string, i) {
      d3_time_dayRe.lastIndex = 0;
      var n = d3_time_dayRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonthAbbrev(date, string, i) {
      d3_time_monthAbbrevRe.lastIndex = 0;
      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonth(date, string, i) {
      d3_time_monthRe.lastIndex = 0;
      var n = d3_time_monthRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseLocaleFull(date, string, i) {
      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
    }
    function d3_time_parseLocaleDate(date, string, i) {
      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
    }
    function d3_time_parseLocaleTime(date, string, i) {
      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
    }
    function d3_time_parseAmPm(date, string, i) {
      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
      return n == null ? -1 : (date.p = n, i);
    }
    return d3_time_format;
  }
  var d3_time_formatPads = {
    "-": "",
    _: " ",
    "0": "0"
  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
  function d3_time_formatPad(value, fill, width) {
    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
  }
  function d3_time_formatRe(names) {
    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
  }
  function d3_time_formatLookup(names) {
    var map = new d3_Map(), i = -1, n = names.length;
    while (++i < n) map.set(names[i].toLowerCase(), i);
    return map;
  }
  function d3_time_parseWeekdayNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
    return n ? (date.w = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberSunday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.U = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberMonday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.W = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
    return n ? (date.y = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
  }
  function d3_time_parseZone(date, string, i) {
    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
    i + 5) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.d = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseDayOfYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.j = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.H = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.M = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.S = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.L = +n[0], i + n[0].length) : -1;
  }
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
  }
  function d3_time_parseLiteralPercent(date, string, i) {
    d3_time_percentRe.lastIndex = 0;
    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
    return n ? i + n[0].length : -1;
  }
  function d3_time_formatMulti(formats) {
    var n = formats.length, i = -1;
    while (++i < n) formats[i][0] = this(formats[i][0]);
    return function(date) {
      var i = 0, f = formats[i];
      while (!f[1](date)) f = formats[++i];
      return f[0](date);
    };
  }
  d3.locale = function(locale) {
    return {
      numberFormat: d3_locale_numberFormat(locale),
      timeFormat: d3_locale_timeFormat(locale)
    };
  };
  var d3_locale_enUS = d3.locale({
    decimal: ".",
    thousands: ",",
    grouping: [ 3 ],
    currency: [ "$", "" ],
    dateTime: "%a %b %e %X %Y",
    date: "%m/%d/%Y",
    time: "%H:%M:%S",
    periods: [ "AM", "PM" ],
    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
  });
  d3.format = d3_locale_enUS.numberFormat;
  d3.geo = {};
  function d3_adder() {}
  d3_adder.prototype = {
    s: 0,
    t: 0,
    add: function(y) {
      d3_adderSum(y, this.t, d3_adderTemp);
      d3_adderSum(d3_adderTemp.s, this.s, this);
      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
    },
    reset: function() {
      this.s = this.t = 0;
    },
    valueOf: function() {
      return this.s;
    }
  };
  var d3_adderTemp = new d3_adder();
  function d3_adderSum(a, b, o) {
    var x = o.s = a + b, bv = x - a, av = x - bv;
    o.t = a - av + (b - bv);
  }
  d3.geo.stream = function(object, listener) {
    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
      d3_geo_streamObjectType[object.type](object, listener);
    } else {
      d3_geo_streamGeometry(object, listener);
    }
  };
  function d3_geo_streamGeometry(geometry, listener) {
    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
      d3_geo_streamGeometryType[geometry.type](geometry, listener);
    }
  }
  var d3_geo_streamObjectType = {
    Feature: function(feature, listener) {
      d3_geo_streamGeometry(feature.geometry, listener);
    },
    FeatureCollection: function(object, listener) {
      var features = object.features, i = -1, n = features.length;
      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
    }
  };
  var d3_geo_streamGeometryType = {
    Sphere: function(object, listener) {
      listener.sphere();
    },
    Point: function(object, listener) {
      object = object.coordinates;
      listener.point(object[0], object[1], object[2]);
    },
    MultiPoint: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
    },
    LineString: function(object, listener) {
      d3_geo_streamLine(object.coordinates, listener, 0);
    },
    MultiLineString: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
    },
    Polygon: function(object, listener) {
      d3_geo_streamPolygon(object.coordinates, listener);
    },
    MultiPolygon: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
    },
    GeometryCollection: function(object, listener) {
      var geometries = object.geometries, i = -1, n = geometries.length;
      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
    }
  };
  function d3_geo_streamLine(coordinates, listener, closed) {
    var i = -1, n = coordinates.length - closed, coordinate;
    listener.lineStart();
    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
    listener.lineEnd();
  }
  function d3_geo_streamPolygon(coordinates, listener) {
    var i = -1, n = coordinates.length;
    listener.polygonStart();
    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
    listener.polygonEnd();
  }
  d3.geo.area = function(object) {
    d3_geo_areaSum = 0;
    d3.geo.stream(object, d3_geo_area);
    return d3_geo_areaSum;
  };
  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
  var d3_geo_area = {
    sphere: function() {
      d3_geo_areaSum += 4 * π;
    },
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_areaRingSum.reset();
      d3_geo_area.lineStart = d3_geo_areaRingStart;
    },
    polygonEnd: function() {
      var area = 2 * d3_geo_areaRingSum;
      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
    }
  };
  function d3_geo_areaRingStart() {
    var λ00, φ00, λ0, cosφ0, sinφ0;
    d3_geo_area.point = function(λ, φ) {
      d3_geo_area.point = nextPoint;
      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
      sinφ0 = Math.sin(φ);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      φ = φ * d3_radians / 2 + π / 4;
      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
      d3_geo_areaRingSum.add(Math.atan2(v, u));
      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
    }
    d3_geo_area.lineEnd = function() {
      nextPoint(λ00, φ00);
    };
  }
  function d3_geo_cartesian(spherical) {
    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
  }
  function d3_geo_cartesianDot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
  }
  function d3_geo_cartesianCross(a, b) {
    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
  }
  function d3_geo_cartesianAdd(a, b) {
    a[0] += b[0];
    a[1] += b[1];
    a[2] += b[2];
  }
  function d3_geo_cartesianScale(vector, k) {
    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
  }
  function d3_geo_cartesianNormalize(d) {
    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
    d[0] /= l;
    d[1] /= l;
    d[2] /= l;
  }
  function d3_geo_spherical(cartesian) {
    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
  }
  function d3_geo_sphericalEqual(a, b) {
    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
  }
  d3.geo.bounds = function() {
    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
    var bound = {
      point: point,
      lineStart: lineStart,
      lineEnd: lineEnd,
      polygonStart: function() {
        bound.point = ringPoint;
        bound.lineStart = ringStart;
        bound.lineEnd = ringEnd;
        dλSum = 0;
        d3_geo_area.polygonStart();
      },
      polygonEnd: function() {
        d3_geo_area.polygonEnd();
        bound.point = point;
        bound.lineStart = lineStart;
        bound.lineEnd = lineEnd;
        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
        range[0] = λ0, range[1] = λ1;
      }
    };
    function point(λ, φ) {
      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
      if (φ < φ0) φ0 = φ;
      if (φ > φ1) φ1 = φ;
    }
    function linePoint(λ, φ) {
      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
      if (p0) {
        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
        d3_geo_cartesianNormalize(inflection);
        inflection = d3_geo_spherical(inflection);
        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = inflection[1] * d3_degrees;
          if (φi > φ1) φ1 = φi;
        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = -inflection[1] * d3_degrees;
          if (φi < φ0) φ0 = φi;
        } else {
          if (φ < φ0) φ0 = φ;
          if (φ > φ1) φ1 = φ;
        }
        if (antimeridian) {
          if (λ < λ_) {
            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
          } else {
            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
          }
        } else {
          if (λ1 >= λ0) {
            if (λ < λ0) λ0 = λ;
            if (λ > λ1) λ1 = λ;
          } else {
            if (λ > λ_) {
              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
            } else {
              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
            }
          }
        }
      } else {
        point(λ, φ);
      }
      p0 = p, λ_ = λ;
    }
    function lineStart() {
      bound.point = linePoint;
    }
    function lineEnd() {
      range[0] = λ0, range[1] = λ1;
      bound.point = point;
      p0 = null;
    }
    function ringPoint(λ, φ) {
      if (p0) {
        var dλ = λ - λ_;
        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
      } else λ__ = λ, φ__ = φ;
      d3_geo_area.point(λ, φ);
      linePoint(λ, φ);
    }
    function ringStart() {
      d3_geo_area.lineStart();
    }
    function ringEnd() {
      ringPoint(λ__, φ__);
      d3_geo_area.lineEnd();
      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
      range[0] = λ0, range[1] = λ1;
      p0 = null;
    }
    function angle(λ0, λ1) {
      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
    }
    function compareRanges(a, b) {
      return a[0] - b[0];
    }
    function withinRange(x, range) {
      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
    }
    return function(feature) {
      φ1 = λ1 = -(λ0 = φ0 = Infinity);
      ranges = [];
      d3.geo.stream(feature, bound);
      var n = ranges.length;
      if (n) {
        ranges.sort(compareRanges);
        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
          b = ranges[i];
          if (withinRange(b[0], a) || withinRange(b[1], a)) {
            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
          } else {
            merged.push(a = b);
          }
        }
        var best = -Infinity, dλ;
        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
          b = merged[i];
          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
        }
      }
      ranges = range = null;
      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
    };
  }();
  d3.geo.centroid = function(object) {
    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
    d3.geo.stream(object, d3_geo_centroid);
    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
    if (m < ε2) {
      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
      m = x * x + y * y + z * z;
      if (m < ε2) return [ NaN, NaN ];
    }
    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
  };
  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
  var d3_geo_centroid = {
    sphere: d3_noop,
    point: d3_geo_centroidPoint,
    lineStart: d3_geo_centroidLineStart,
    lineEnd: d3_geo_centroidLineEnd,
    polygonStart: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
    }
  };
  function d3_geo_centroidPoint(λ, φ) {
    λ *= d3_radians;
    var cosφ = Math.cos(φ *= d3_radians);
    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
  }
  function d3_geo_centroidPointXYZ(x, y, z) {
    ++d3_geo_centroidW0;
    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
  }
  function d3_geo_centroidLineStart() {
    var x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroid.point = nextPoint;
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_centroidLineEnd() {
    d3_geo_centroid.point = d3_geo_centroidPoint;
  }
  function d3_geo_centroidRingStart() {
    var λ00, φ00, x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ00 = λ, φ00 = φ;
      d3_geo_centroid.point = nextPoint;
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    d3_geo_centroid.lineEnd = function() {
      nextPoint(λ00, φ00);
      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
      d3_geo_centroid.point = d3_geo_centroidPoint;
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
      d3_geo_centroidX2 += v * cx;
      d3_geo_centroidY2 += v * cy;
      d3_geo_centroidZ2 += v * cz;
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_compose(a, b) {
    function compose(x, y) {
      return x = a(x, y), b(x[0], x[1]);
    }
    if (a.invert && b.invert) compose.invert = function(x, y) {
      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
    };
    return compose;
  }
  function d3_true() {
    return true;
  }
  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
    var subject = [], clip = [];
    segments.forEach(function(segment) {
      if ((n = segment.length - 1) <= 0) return;
      var n, p0 = segment[0], p1 = segment[n];
      if (d3_geo_sphericalEqual(p0, p1)) {
        listener.lineStart();
        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
        listener.lineEnd();
        return;
      }
      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
      a.o = b;
      subject.push(a);
      clip.push(b);
      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
      a.o = b;
      subject.push(a);
      clip.push(b);
    });
    clip.sort(compare);
    d3_geo_clipPolygonLinkCircular(subject);
    d3_geo_clipPolygonLinkCircular(clip);
    if (!subject.length) return;
    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
      clip[i].e = entry = !entry;
    }
    var start = subject[0], points, point;
    while (1) {
      var current = start, isSubject = true;
      while (current.v) if ((current = current.n) === start) return;
      points = current.z;
      listener.lineStart();
      do {
        current.v = current.o.v = true;
        if (current.e) {
          if (isSubject) {
            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.n.x, 1, listener);
          }
          current = current.n;
        } else {
          if (isSubject) {
            points = current.p.z;
            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.p.x, -1, listener);
          }
          current = current.p;
        }
        current = current.o;
        points = current.z;
        isSubject = !isSubject;
      } while (!current.v);
      listener.lineEnd();
    }
  }
  function d3_geo_clipPolygonLinkCircular(array) {
    if (!(n = array.length)) return;
    var n, i = 0, a = array[0], b;
    while (++i < n) {
      a.n = b = array[i];
      b.p = a;
      a = b;
    }
    a.n = b = array[0];
    b.p = a;
  }
  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
    this.x = point;
    this.z = points;
    this.o = other;
    this.e = entry;
    this.v = false;
    this.n = this.p = null;
  }
  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
    return function(rotate, listener) {
      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          clip.point = pointRing;
          clip.lineStart = ringStart;
          clip.lineEnd = ringEnd;
          segments = [];
          polygon = [];
        },
        polygonEnd: function() {
          clip.point = point;
          clip.lineStart = lineStart;
          clip.lineEnd = lineEnd;
          segments = d3.merge(segments);
          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
          if (segments.length) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
          } else if (clipStartInside) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            interpolate(null, null, 1, listener);
            listener.lineEnd();
          }
          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
          segments = polygon = null;
        },
        sphere: function() {
          listener.polygonStart();
          listener.lineStart();
          interpolate(null, null, 1, listener);
          listener.lineEnd();
          listener.polygonEnd();
        }
      };
      function point(λ, φ) {
        var point = rotate(λ, φ);
        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
      }
      function pointLine(λ, φ) {
        var point = rotate(λ, φ);
        line.point(point[0], point[1]);
      }
      function lineStart() {
        clip.point = pointLine;
        line.lineStart();
      }
      function lineEnd() {
        clip.point = point;
        line.lineEnd();
      }
      var segments;
      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
      function pointRing(λ, φ) {
        ring.push([ λ, φ ]);
        var point = rotate(λ, φ);
        ringListener.point(point[0], point[1]);
      }
      function ringStart() {
        ringListener.lineStart();
        ring = [];
      }
      function ringEnd() {
        pointRing(ring[0][0], ring[0][1]);
        ringListener.lineEnd();
        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
        ring.pop();
        polygon.push(ring);
        ring = null;
        if (!n) return;
        if (clean & 1) {
          segment = ringSegments[0];
          var n = segment.length - 1, i = -1, point;
          if (n > 0) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            while (++i < n) listener.point((point = segment[i])[0], point[1]);
            listener.lineEnd();
          }
          return;
        }
        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
      }
      return clip;
    };
  }
  function d3_geo_clipSegmentLength1(segment) {
    return segment.length > 1;
  }
  function d3_geo_clipBufferListener() {
    var lines = [], line;
    return {
      lineStart: function() {
        lines.push(line = []);
      },
      point: function(λ, φ) {
        line.push([ λ, φ ]);
      },
      lineEnd: d3_noop,
      buffer: function() {
        var buffer = lines;
        lines = [];
        line = null;
        return buffer;
      },
      rejoin: function() {
        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
      }
    };
  }
  function d3_geo_clipSort(a, b) {
    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
  }
  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
  function d3_geo_clipAntimeridianLine(listener) {
    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
    return {
      lineStart: function() {
        listener.lineStart();
        clean = 1;
      },
      point: function(λ1, φ1) {
        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
        if (abs(dλ - π) < ε) {
          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          listener.point(λ1, φ0);
          clean = 0;
        } else if (sλ0 !== sλ1 && dλ >= π) {
          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          clean = 0;
        }
        listener.point(λ0 = λ1, φ0 = φ1);
        sλ0 = sλ1;
      },
      lineEnd: function() {
        listener.lineEnd();
        λ0 = φ0 = NaN;
      },
      clean: function() {
        return 2 - clean;
      }
    };
  }
  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
  }
  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
    var φ;
    if (from == null) {
      φ = direction * halfπ;
      listener.point(-π, φ);
      listener.point(0, φ);
      listener.point(π, φ);
      listener.point(π, 0);
      listener.point(π, -φ);
      listener.point(0, -φ);
      listener.point(-π, -φ);
      listener.point(-π, 0);
      listener.point(-π, φ);
    } else if (abs(from[0] - to[0]) > ε) {
      var s = from[0] < to[0] ? π : -π;
      φ = direction * s / 2;
      listener.point(-s, φ);
      listener.point(0, φ);
      listener.point(s, φ);
    } else {
      listener.point(to[0], to[1]);
    }
  }
  function d3_geo_pointInPolygon(point, polygon) {
    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
    d3_geo_areaRingSum.reset();
    for (var i = 0, n = polygon.length; i < n; ++i) {
      var ring = polygon[i], m = ring.length;
      if (!m) continue;
      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
      while (true) {
        if (j === m) j = 0;
        point = ring[j];
        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
          d3_geo_cartesianNormalize(arc);
          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
          d3_geo_cartesianNormalize(intersection);
          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
          }
        }
        if (!j++) break;
        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
      }
    }
    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
  }
  function d3_geo_clipCircle(radius) {
    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
    function visible(λ, φ) {
      return Math.cos(λ) * Math.cos(φ) > cr;
    }
    function clipLine(listener) {
      var point0, c0, v0, v00, clean;
      return {
        lineStart: function() {
          v00 = v0 = false;
          clean = 1;
        },
        point: function(λ, φ) {
          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
          if (!point0 && (v00 = v0 = v)) listener.lineStart();
          if (v !== v0) {
            point2 = intersect(point0, point1);
            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
              point1[0] += ε;
              point1[1] += ε;
              v = visible(point1[0], point1[1]);
            }
          }
          if (v !== v0) {
            clean = 0;
            if (v) {
              listener.lineStart();
              point2 = intersect(point1, point0);
              listener.point(point2[0], point2[1]);
            } else {
              point2 = intersect(point0, point1);
              listener.point(point2[0], point2[1]);
              listener.lineEnd();
            }
            point0 = point2;
          } else if (notHemisphere && point0 && smallRadius ^ v) {
            var t;
            if (!(c & c0) && (t = intersect(point1, point0, true))) {
              clean = 0;
              if (smallRadius) {
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
              } else {
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
              }
            }
          }
          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
            listener.point(point1[0], point1[1]);
          }
          point0 = point1, v0 = v, c0 = c;
        },
        lineEnd: function() {
          if (v0) listener.lineEnd();
          point0 = null;
        },
        clean: function() {
          return clean | (v00 && v0) << 1;
        }
      };
    }
    function intersect(a, b, two) {
      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
      if (!determinant) return !two && a;
      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
      d3_geo_cartesianAdd(A, B);
      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
      if (t2 < 0) return;
      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
      d3_geo_cartesianAdd(q, A);
      q = d3_geo_spherical(q);
      if (!two) return q;
      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
        d3_geo_cartesianAdd(q1, A);
        return [ q, d3_geo_spherical(q1) ];
      }
    }
    function code(λ, φ) {
      var r = smallRadius ? radius : π - radius, code = 0;
      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
      return code;
    }
  }
  function d3_geom_clipLine(x0, y0, x1, y1) {
    return function(line) {
      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
      r = x0 - ax;
      if (!dx && r > 0) return;
      r /= dx;
      if (dx < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dx > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = x1 - ax;
      if (!dx && r < 0) return;
      r /= dx;
      if (dx < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dx > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      r = y0 - ay;
      if (!dy && r > 0) return;
      r /= dy;
      if (dy < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dy > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = y1 - ay;
      if (!dy && r < 0) return;
      r /= dy;
      if (dy < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dy > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      if (t0 > 0) line.a = {
        x: ax + t0 * dx,
        y: ay + t0 * dy
      };
      if (t1 < 1) line.b = {
        x: ax + t1 * dx,
        y: ay + t1 * dy
      };
      return line;
    };
  }
  var d3_geo_clipExtentMAX = 1e9;
  d3.geo.clipExtent = function() {
    var x0, y0, x1, y1, stream, clip, clipExtent = {
      stream: function(output) {
        if (stream) stream.valid = false;
        stream = clip(output);
        stream.valid = true;
        return stream;
      },
      extent: function(_) {
        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
        if (stream) stream.valid = false, stream = null;
        return clipExtent;
      }
    };
    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
  };
  function d3_geo_clipExtent(x0, y0, x1, y1) {
    return function(listener) {
      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          listener = bufferListener;
          segments = [];
          polygon = [];
          clean = true;
        },
        polygonEnd: function() {
          listener = listener_;
          segments = d3.merge(segments);
          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
          if (inside || visible) {
            listener.polygonStart();
            if (inside) {
              listener.lineStart();
              interpolate(null, null, 1, listener);
              listener.lineEnd();
            }
            if (visible) {
              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
            }
            listener.polygonEnd();
          }
          segments = polygon = ring = null;
        }
      };
      function insidePolygon(p) {
        var wn = 0, n = polygon.length, y = p[1];
        for (var i = 0; i < n; ++i) {
          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
            b = v[j];
            if (a[1] <= y) {
              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
            } else {
              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
            }
            a = b;
          }
        }
        return wn !== 0;
      }
      function interpolate(from, to, direction, listener) {
        var a = 0, a1 = 0;
        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
          do {
            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
          } while ((a = (a + direction + 4) % 4) !== a1);
        } else {
          listener.point(to[0], to[1]);
        }
      }
      function pointVisible(x, y) {
        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
      }
      function point(x, y) {
        if (pointVisible(x, y)) listener.point(x, y);
      }
      var x__, y__, v__, x_, y_, v_, first, clean;
      function lineStart() {
        clip.point = linePoint;
        if (polygon) polygon.push(ring = []);
        first = true;
        v_ = false;
        x_ = y_ = NaN;
      }
      function lineEnd() {
        if (segments) {
          linePoint(x__, y__);
          if (v__ && v_) bufferListener.rejoin();
          segments.push(bufferListener.buffer());
        }
        clip.point = point;
        if (v_) listener.lineEnd();
      }
      function linePoint(x, y) {
        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
        var v = pointVisible(x, y);
        if (polygon) ring.push([ x, y ]);
        if (first) {
          x__ = x, y__ = y, v__ = v;
          first = false;
          if (v) {
            listener.lineStart();
            listener.point(x, y);
          }
        } else {
          if (v && v_) listener.point(x, y); else {
            var l = {
              a: {
                x: x_,
                y: y_
              },
              b: {
                x: x,
                y: y
              }
            };
            if (clipLine(l)) {
              if (!v_) {
                listener.lineStart();
                listener.point(l.a.x, l.a.y);
              }
              listener.point(l.b.x, l.b.y);
              if (!v) listener.lineEnd();
              clean = false;
            } else if (v) {
              listener.lineStart();
              listener.point(x, y);
              clean = false;
            }
          }
        }
        x_ = x, y_ = y, v_ = v;
      }
      return clip;
    };
    function corner(p, direction) {
      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
    }
    function compare(a, b) {
      return comparePoints(a.x, b.x);
    }
    function comparePoints(a, b) {
      var ca = corner(a, 1), cb = corner(b, 1);
      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
    }
  }
  function d3_geo_conic(projectAt) {
    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
    p.parallels = function(_) {
      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
    };
    return p;
  }
  function d3_geo_conicEqualArea(φ0, φ1) {
    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
    function forward(λ, φ) {
      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = ρ0 - y;
      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
    };
    return forward;
  }
  (d3.geo.conicEqualArea = function() {
    return d3_geo_conic(d3_geo_conicEqualArea);
  }).raw = d3_geo_conicEqualArea;
  d3.geo.albers = function() {
    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
  };
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
    var point, pointStream = {
      point: function(x, y) {
        point = [ x, y ];
      }
    }, lower48Point, alaskaPoint, hawaiiPoint;
    function albersUsa(coordinates) {
      var x = coordinates[0], y = coordinates[1];
      point = null;
      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
      return point;
    }
    albersUsa.invert = function(coordinates) {
      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
    };
    albersUsa.stream = function(stream) {
      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
      return {
        point: function(x, y) {
          lower48Stream.point(x, y);
          alaskaStream.point(x, y);
          hawaiiStream.point(x, y);
        },
        sphere: function() {
          lower48Stream.sphere();
          alaskaStream.sphere();
          hawaiiStream.sphere();
        },
        lineStart: function() {
          lower48Stream.lineStart();
          alaskaStream.lineStart();
          hawaiiStream.lineStart();
        },
        lineEnd: function() {
          lower48Stream.lineEnd();
          alaskaStream.lineEnd();
          hawaiiStream.lineEnd();
        },
        polygonStart: function() {
          lower48Stream.polygonStart();
          alaskaStream.polygonStart();
          hawaiiStream.polygonStart();
        },
        polygonEnd: function() {
          lower48Stream.polygonEnd();
          alaskaStream.polygonEnd();
          hawaiiStream.polygonEnd();
        }
      };
    };
    albersUsa.precision = function(_) {
      if (!arguments.length) return lower48.precision();
      lower48.precision(_);
      alaska.precision(_);
      hawaii.precision(_);
      return albersUsa;
    };
    albersUsa.scale = function(_) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(_);
      alaska.scale(_ * .35);
      hawaii.scale(_);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(_) {
      if (!arguments.length) return lower48.translate();
      var k = lower48.scale(), x = +_[0], y = +_[1];
      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      return albersUsa;
    };
    return albersUsa.scale(1070);
  };
  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_pathAreaPolygon = 0;
      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
    }
  };
  function d3_geo_pathAreaRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathArea.point = function(x, y) {
      d3_geo_pathArea.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
      x0 = x, y0 = y;
    }
    d3_geo_pathArea.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
  var d3_geo_pathBounds = {
    point: d3_geo_pathBoundsPoint,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_pathBoundsPoint(x, y) {
    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
  }
  function d3_geo_pathBuffer() {
    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointCircle = d3_geo_pathBufferCircle(_);
        return stream;
      },
      result: function() {
        if (buffer.length) {
          var result = buffer.join("");
          buffer = [];
          return result;
        }
      }
    };
    function point(x, y) {
      buffer.push("M", x, ",", y, pointCircle);
    }
    function pointLineStart(x, y) {
      buffer.push("M", x, ",", y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      buffer.push("L", x, ",", y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      buffer.push("Z");
    }
    return stream;
  }
  function d3_geo_pathBufferCircle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
  }
  var d3_geo_pathCentroid = {
    point: d3_geo_pathCentroidPoint,
    lineStart: d3_geo_pathCentroidLineStart,
    lineEnd: d3_geo_pathCentroidLineEnd,
    polygonStart: function() {
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
    }
  };
  function d3_geo_pathCentroidPoint(x, y) {
    d3_geo_centroidX0 += x;
    d3_geo_centroidY0 += y;
    ++d3_geo_centroidZ0;
  }
  function d3_geo_pathCentroidLineStart() {
    var x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
  }
  function d3_geo_pathCentroidLineEnd() {
    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
  }
  function d3_geo_pathCentroidRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      z = y0 * x - x0 * y;
      d3_geo_centroidX2 += z * (x0 + x);
      d3_geo_centroidY2 += z * (y0 + y);
      d3_geo_centroidZ2 += z * 3;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
    d3_geo_pathCentroid.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  function d3_geo_pathContext(context) {
    var pointRadius = 4.5;
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointRadius = _;
        return stream;
      },
      result: d3_noop
    };
    function point(x, y) {
      context.moveTo(x + pointRadius, y);
      context.arc(x, y, pointRadius, 0, τ);
    }
    function pointLineStart(x, y) {
      context.moveTo(x, y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      context.lineTo(x, y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      context.closePath();
    }
    return stream;
  }
  function d3_geo_resample(project) {
    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
    function resample(stream) {
      return (maxDepth ? resampleRecursive : resampleNone)(stream);
    }
    function resampleNone(stream) {
      return d3_geo_transformPoint(stream, function(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      });
    }
    function resampleRecursive(stream) {
      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
      var resample = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          stream.polygonStart();
          resample.lineStart = ringStart;
        },
        polygonEnd: function() {
          stream.polygonEnd();
          resample.lineStart = lineStart;
        }
      };
      function point(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      }
      function lineStart() {
        x0 = NaN;
        resample.point = linePoint;
        stream.lineStart();
      }
      function linePoint(λ, φ) {
        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
        stream.point(x0, y0);
      }
      function lineEnd() {
        resample.point = point;
        stream.lineEnd();
      }
      function ringStart() {
        lineStart();
        resample.point = ringPoint;
        resample.lineEnd = ringEnd;
      }
      function ringPoint(λ, φ) {
        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
        resample.point = linePoint;
      }
      function ringEnd() {
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
        resample.lineEnd = lineEnd;
        lineEnd();
      }
      return resample;
    }
    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
      if (d2 > 4 * δ2 && depth--) {
        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
          stream.point(x2, y2);
          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
        }
      }
    }
    resample.precision = function(_) {
      if (!arguments.length) return Math.sqrt(δ2);
      maxDepth = (δ2 = _ * _) > 0 && 16;
      return resample;
    };
    return resample;
  }
  d3.geo.path = function() {
    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
    function path(object) {
      if (object) {
        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
        d3.geo.stream(object, cacheStream);
      }
      return contextStream.result();
    }
    path.area = function(object) {
      d3_geo_pathAreaSum = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathArea));
      return d3_geo_pathAreaSum;
    };
    path.centroid = function(object) {
      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
    };
    path.bounds = function(object) {
      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
    };
    path.projection = function(_) {
      if (!arguments.length) return projection;
      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
      return reset();
    };
    path.context = function(_) {
      if (!arguments.length) return context;
      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
      return reset();
    };
    path.pointRadius = function(_) {
      if (!arguments.length) return pointRadius;
      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
      return path;
    };
    function reset() {
      cacheStream = null;
      return path;
    }
    return path.projection(d3.geo.albersUsa()).context(null);
  };
  function d3_geo_pathProjectStream(project) {
    var resample = d3_geo_resample(function(x, y) {
      return project([ x * d3_degrees, y * d3_degrees ]);
    });
    return function(stream) {
      return d3_geo_projectionRadians(resample(stream));
    };
  }
  d3.geo.transform = function(methods) {
    return {
      stream: function(stream) {
        var transform = new d3_geo_transform(stream);
        for (var k in methods) transform[k] = methods[k];
        return transform;
      }
    };
  };
  function d3_geo_transform(stream) {
    this.stream = stream;
  }
  d3_geo_transform.prototype = {
    point: function(x, y) {
      this.stream.point(x, y);
    },
    sphere: function() {
      this.stream.sphere();
    },
    lineStart: function() {
      this.stream.lineStart();
    },
    lineEnd: function() {
      this.stream.lineEnd();
    },
    polygonStart: function() {
      this.stream.polygonStart();
    },
    polygonEnd: function() {
      this.stream.polygonEnd();
    }
  };
  function d3_geo_transformPoint(stream, point) {
    return {
      point: point,
      sphere: function() {
        stream.sphere();
      },
      lineStart: function() {
        stream.lineStart();
      },
      lineEnd: function() {
        stream.lineEnd();
      },
      polygonStart: function() {
        stream.polygonStart();
      },
      polygonEnd: function() {
        stream.polygonEnd();
      }
    };
  }
  d3.geo.projection = d3_geo_projection;
  d3.geo.projectionMutator = d3_geo_projectionMutator;
  function d3_geo_projection(project) {
    return d3_geo_projectionMutator(function() {
      return project;
    })();
  }
  function d3_geo_projectionMutator(projectAt) {
    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
      x = project(x, y);
      return [ x[0] * k + δx, δy - x[1] * k ];
    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
    function projection(point) {
      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
      return [ point[0] * k + δx, δy - point[1] * k ];
    }
    function invert(point) {
      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
    }
    projection.stream = function(output) {
      if (stream) stream.valid = false;
      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
      stream.valid = true;
      return stream;
    };
    projection.clipAngle = function(_) {
      if (!arguments.length) return clipAngle;
      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
      return invalidate();
    };
    projection.clipExtent = function(_) {
      if (!arguments.length) return clipExtent;
      clipExtent = _;
      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
      return invalidate();
    };
    projection.scale = function(_) {
      if (!arguments.length) return k;
      k = +_;
      return reset();
    };
    projection.translate = function(_) {
      if (!arguments.length) return [ x, y ];
      x = +_[0];
      y = +_[1];
      return reset();
    };
    projection.center = function(_) {
      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
      λ = _[0] % 360 * d3_radians;
      φ = _[1] % 360 * d3_radians;
      return reset();
    };
    projection.rotate = function(_) {
      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
      δλ = _[0] % 360 * d3_radians;
      δφ = _[1] % 360 * d3_radians;
      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
      return reset();
    };
    d3.rebind(projection, projectResample, "precision");
    function reset() {
      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
      var center = project(λ, φ);
      δx = x - center[0] * k;
      δy = y + center[1] * k;
      return invalidate();
    }
    function invalidate() {
      if (stream) stream.valid = false, stream = null;
      return projection;
    }
    return function() {
      project = projectAt.apply(this, arguments);
      projection.invert = project.invert && invert;
      return reset();
    };
  }
  function d3_geo_projectionRadians(stream) {
    return d3_geo_transformPoint(stream, function(x, y) {
      stream.point(x * d3_radians, y * d3_radians);
    });
  }
  function d3_geo_equirectangular(λ, φ) {
    return [ λ, φ ];
  }
  (d3.geo.equirectangular = function() {
    return d3_geo_projection(d3_geo_equirectangular);
  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
  d3.geo.rotation = function(rotate) {
    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
    function forward(coordinates) {
      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    }
    forward.invert = function(coordinates) {
      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    };
    return forward;
  };
  function d3_geo_identityRotation(λ, φ) {
    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
  }
  d3_geo_identityRotation.invert = d3_geo_equirectangular;
  function d3_geo_rotation(δλ, δφ, δγ) {
    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
  }
  function d3_geo_forwardRotationλ(δλ) {
    return function(λ, φ) {
      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
    };
  }
  function d3_geo_rotationλ(δλ) {
    var rotation = d3_geo_forwardRotationλ(δλ);
    rotation.invert = d3_geo_forwardRotationλ(-δλ);
    return rotation;
  }
  function d3_geo_rotationφγ(δφ, δγ) {
    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
    function rotation(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
    }
    rotation.invert = function(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
    };
    return rotation;
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
    function circle() {
      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
      interpolate(null, null, 1, {
        point: function(x, y) {
          ring.push(x = rotate(x, y));
          x[0] *= d3_degrees, x[1] *= d3_degrees;
        }
      });
      return {
        type: "Polygon",
        coordinates: [ ring ]
      };
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return angle;
      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
      return circle;
    };
    circle.precision = function(_) {
      if (!arguments.length) return precision;
      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
      return circle;
    };
    return circle.angle(90);
  };
  function d3_geo_circleInterpolate(radius, precision) {
    var cr = Math.cos(radius), sr = Math.sin(radius);
    return function(from, to, direction, listener) {
      var step = direction * precision;
      if (from != null) {
        from = d3_geo_circleAngle(cr, from);
        to = d3_geo_circleAngle(cr, to);
        if (direction > 0 ? from < to : from > to) from += direction * τ;
      } else {
        from = radius + direction * τ;
        to = radius - .5 * step;
      }
      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
      }
    };
  }
  function d3_geo_circleAngle(cr, point) {
    var a = d3_geo_cartesian(point);
    a[0] -= cr;
    d3_geo_cartesianNormalize(a);
    var angle = d3_acos(-a[1]);
    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
  }
  d3.geo.distance = function(a, b) {
    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
  };
  d3.geo.graticule = function() {
    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
    function graticule() {
      return {
        type: "MultiLineString",
        coordinates: lines()
      };
    }
    function lines() {
      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
        return abs(x % DX) > ε;
      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
        return abs(y % DY) > ε;
      }).map(y));
    }
    graticule.lines = function() {
      return lines().map(function(coordinates) {
        return {
          type: "LineString",
          coordinates: coordinates
        };
      });
    };
    graticule.outline = function() {
      return {
        type: "Polygon",
        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
      };
    };
    graticule.extent = function(_) {
      if (!arguments.length) return graticule.minorExtent();
      return graticule.majorExtent(_).minorExtent(_);
    };
    graticule.majorExtent = function(_) {
      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
      X0 = +_[0][0], X1 = +_[1][0];
      Y0 = +_[0][1], Y1 = +_[1][1];
      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
      return graticule.precision(precision);
    };
    graticule.minorExtent = function(_) {
      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
      x0 = +_[0][0], x1 = +_[1][0];
      y0 = +_[0][1], y1 = +_[1][1];
      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
      return graticule.precision(precision);
    };
    graticule.step = function(_) {
      if (!arguments.length) return graticule.minorStep();
      return graticule.majorStep(_).minorStep(_);
    };
    graticule.majorStep = function(_) {
      if (!arguments.length) return [ DX, DY ];
      DX = +_[0], DY = +_[1];
      return graticule;
    };
    graticule.minorStep = function(_) {
      if (!arguments.length) return [ dx, dy ];
      dx = +_[0], dy = +_[1];
      return graticule;
    };
    graticule.precision = function(_) {
      if (!arguments.length) return precision;
      precision = +_;
      x = d3_geo_graticuleX(y0, y1, 90);
      y = d3_geo_graticuleY(x0, x1, precision);
      X = d3_geo_graticuleX(Y0, Y1, 90);
      Y = d3_geo_graticuleY(X0, X1, precision);
      return graticule;
    };
    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
  };
  function d3_geo_graticuleX(y0, y1, dy) {
    var y = d3.range(y0, y1 - ε, dy).concat(y1);
    return function(x) {
      return y.map(function(y) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_graticuleY(x0, x1, dx) {
    var x = d3.range(x0, x1 - ε, dx).concat(x1);
    return function(y) {
      return x.map(function(x) {
        return [ x, y ];
      });
    };
  }
  function d3_source(d) {
    return d.source;
  }
  function d3_target(d) {
    return d.target;
  }
  d3.geo.greatArc = function() {
    var source = d3_source, source_, target = d3_target, target_;
    function greatArc() {
      return {
        type: "LineString",
        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
      };
    }
    greatArc.distance = function() {
      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _, source_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _, target_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.precision = function() {
      return arguments.length ? greatArc : 0;
    };
    return greatArc;
  };
  d3.geo.interpolate = function(source, target) {
    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
  };
  function d3_geo_interpolate(x0, y0, x1, y1) {
    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
    var interpolate = d ? function(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
    } : function() {
      return [ x0 * d3_degrees, y0 * d3_degrees ];
    };
    interpolate.distance = d;
    return interpolate;
  }
  d3.geo.length = function(object) {
    d3_geo_lengthSum = 0;
    d3.geo.stream(object, d3_geo_length);
    return d3_geo_lengthSum;
  };
  var d3_geo_lengthSum;
  var d3_geo_length = {
    sphere: d3_noop,
    point: d3_noop,
    lineStart: d3_geo_lengthLineStart,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_lengthLineStart() {
    var λ0, sinφ0, cosφ0;
    d3_geo_length.point = function(λ, φ) {
      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
      d3_geo_length.point = nextPoint;
    };
    d3_geo_length.lineEnd = function() {
      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
    };
    function nextPoint(λ, φ) {
      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
    }
  }
  function d3_geo_azimuthal(scale, angle) {
    function azimuthal(λ, φ) {
      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
    }
    azimuthal.invert = function(x, y) {
      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
    };
    return azimuthal;
  }
  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
    return Math.sqrt(2 / (1 + cosλcosφ));
  }, function(ρ) {
    return 2 * Math.asin(ρ / 2);
  });
  (d3.geo.azimuthalEqualArea = function() {
    return d3_geo_projection(d3_geo_azimuthalEqualArea);
  }).raw = d3_geo_azimuthalEqualArea;
  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
    var c = Math.acos(cosλcosφ);
    return c && c / Math.sin(c);
  }, d3_identity);
  (d3.geo.azimuthalEquidistant = function() {
    return d3_geo_projection(d3_geo_azimuthalEquidistant);
  }).raw = d3_geo_azimuthalEquidistant;
  function d3_geo_conicConformal(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), t = function(φ) {
      return Math.tan(π / 4 + φ / 2);
    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
    if (!n) return d3_geo_mercator;
    function forward(λ, φ) {
      if (F > 0) {
        if (φ < -halfπ + ε) φ = -halfπ + ε;
      } else {
        if (φ > halfπ - ε) φ = halfπ - ε;
      }
      var ρ = F / Math.pow(t(φ), n);
      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
    };
    return forward;
  }
  (d3.geo.conicConformal = function() {
    return d3_geo_conic(d3_geo_conicConformal);
  }).raw = d3_geo_conicConformal;
  function d3_geo_conicEquidistant(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
    if (abs(n) < ε) return d3_geo_equirectangular;
    function forward(λ, φ) {
      var ρ = G - φ;
      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = G - y;
      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
    };
    return forward;
  }
  (d3.geo.conicEquidistant = function() {
    return d3_geo_conic(d3_geo_conicEquidistant);
  }).raw = d3_geo_conicEquidistant;
  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / cosλcosφ;
  }, Math.atan);
  (d3.geo.gnomonic = function() {
    return d3_geo_projection(d3_geo_gnomonic);
  }).raw = d3_geo_gnomonic;
  function d3_geo_mercator(λ, φ) {
    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
  }
  d3_geo_mercator.invert = function(x, y) {
    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
  };
  function d3_geo_mercatorProjection(project) {
    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
    m.scale = function() {
      var v = scale.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.translate = function() {
      var v = translate.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.clipExtent = function(_) {
      var v = clipExtent.apply(m, arguments);
      if (v === m) {
        if (clipAuto = _ == null) {
          var k = π * scale(), t = translate();
          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
        }
      } else if (clipAuto) {
        v = null;
      }
      return v;
    };
    return m.clipExtent(null);
  }
  (d3.geo.mercator = function() {
    return d3_geo_mercatorProjection(d3_geo_mercator);
  }).raw = d3_geo_mercator;
  var d3_geo_orthographic = d3_geo_azimuthal(function() {
    return 1;
  }, Math.asin);
  (d3.geo.orthographic = function() {
    return d3_geo_projection(d3_geo_orthographic);
  }).raw = d3_geo_orthographic;
  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / (1 + cosλcosφ);
  }, function(ρ) {
    return 2 * Math.atan(ρ);
  });
  (d3.geo.stereographic = function() {
    return d3_geo_projection(d3_geo_stereographic);
  }).raw = d3_geo_stereographic;
  function d3_geo_transverseMercator(λ, φ) {
    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
  }
  d3_geo_transverseMercator.invert = function(x, y) {
    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
  };
  (d3.geo.transverseMercator = function() {
    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
    projection.center = function(_) {
      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
    };
    projection.rotate = function(_) {
      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
      [ _[0], _[1], _[2] - 90 ]);
    };
    return rotate([ 0, 0, 90 ]);
  }).raw = d3_geo_transverseMercator;
  d3.geom = {};
  function d3_geom_pointX(d) {
    return d[0];
  }
  function d3_geom_pointY(d) {
    return d[1];
  }
  d3.geom.hull = function(vertices) {
    var x = d3_geom_pointX, y = d3_geom_pointY;
    if (arguments.length) return hull(vertices);
    function hull(data) {
      if (data.length < 3) return [];
      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
      for (i = 0; i < n; i++) {
        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
      }
      points.sort(d3_geom_hullOrder);
      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
      return polygon;
    }
    hull.x = function(_) {
      return arguments.length ? (x = _, hull) : x;
    };
    hull.y = function(_) {
      return arguments.length ? (y = _, hull) : y;
    };
    return hull;
  };
  function d3_geom_hullUpper(points) {
    var n = points.length, hull = [ 0, 1 ], hs = 2;
    for (var i = 2; i < n; i++) {
      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
      hull[hs++] = i;
    }
    return hull.slice(0, hs);
  }
  function d3_geom_hullOrder(a, b) {
    return a[0] - b[0] || a[1] - b[1];
  }
  d3.geom.polygon = function(coordinates) {
    d3_subclass(coordinates, d3_geom_polygonPrototype);
    return coordinates;
  };
  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
  d3_geom_polygonPrototype.area = function() {
    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
    while (++i < n) {
      a = b;
      b = this[i];
      area += a[1] * b[0] - a[0] * b[1];
    }
    return area * .5;
  };
  d3_geom_polygonPrototype.centroid = function(k) {
    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
    if (!arguments.length) k = -1 / (6 * this.area());
    while (++i < n) {
      a = b;
      b = this[i];
      c = a[0] * b[1] - b[0] * a[1];
      x += (a[0] + b[0]) * c;
      y += (a[1] + b[1]) * c;
    }
    return [ x * k, y * k ];
  };
  d3_geom_polygonPrototype.clip = function(subject) {
    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
    while (++i < n) {
      input = subject.slice();
      subject.length = 0;
      b = this[i];
      c = input[(m = input.length - closed) - 1];
      j = -1;
      while (++j < m) {
        d = input[j];
        if (d3_geom_polygonInside(d, a, b)) {
          if (!d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          subject.push(d);
        } else if (d3_geom_polygonInside(c, a, b)) {
          subject.push(d3_geom_polygonIntersect(c, d, a, b));
        }
        c = d;
      }
      if (closed) subject.push(subject[0]);
      a = b;
    }
    return subject;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  function d3_geom_polygonClosed(coordinates) {
    var a = coordinates[0], b = coordinates[coordinates.length - 1];
    return !(a[0] - b[0] || a[1] - b[1]);
  }
  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
  function d3_geom_voronoiBeach() {
    d3_geom_voronoiRedBlackNode(this);
    this.edge = this.site = this.circle = null;
  }
  function d3_geom_voronoiCreateBeach(site) {
    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
    beach.site = site;
    return beach;
  }
  function d3_geom_voronoiDetachBeach(beach) {
    d3_geom_voronoiDetachCircle(beach);
    d3_geom_voronoiBeaches.remove(beach);
    d3_geom_voronoiBeachPool.push(beach);
    d3_geom_voronoiRedBlackNode(beach);
  }
  function d3_geom_voronoiRemoveBeach(beach) {
    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
      x: x,
      y: y
    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
    d3_geom_voronoiDetachBeach(beach);
    var lArc = previous;
    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
      previous = lArc.P;
      disappearing.unshift(lArc);
      d3_geom_voronoiDetachBeach(lArc);
      lArc = previous;
    }
    disappearing.unshift(lArc);
    d3_geom_voronoiDetachCircle(lArc);
    var rArc = next;
    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
      next = rArc.N;
      disappearing.push(rArc);
      d3_geom_voronoiDetachBeach(rArc);
      rArc = next;
    }
    disappearing.push(rArc);
    d3_geom_voronoiDetachCircle(rArc);
    var nArcs = disappearing.length, iArc;
    for (iArc = 1; iArc < nArcs; ++iArc) {
      rArc = disappearing[iArc];
      lArc = disappearing[iArc - 1];
      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
    }
    lArc = disappearing[0];
    rArc = disappearing[nArcs - 1];
    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiAddBeach(site) {
    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
    while (node) {
      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
      if (dxl > ε) node = node.L; else {
        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
        if (dxr > ε) {
          if (!node.R) {
            lArc = node;
            break;
          }
          node = node.R;
        } else {
          if (dxl > -ε) {
            lArc = node.P;
            rArc = node;
          } else if (dxr > -ε) {
            lArc = node;
            rArc = node.N;
          } else {
            lArc = rArc = node;
          }
          break;
        }
      }
    }
    var newArc = d3_geom_voronoiCreateBeach(site);
    d3_geom_voronoiBeaches.insert(lArc, newArc);
    if (!lArc && !rArc) return;
    if (lArc === rArc) {
      d3_geom_voronoiDetachCircle(lArc);
      rArc = d3_geom_voronoiCreateBeach(lArc.site);
      d3_geom_voronoiBeaches.insert(newArc, rArc);
      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      d3_geom_voronoiAttachCircle(lArc);
      d3_geom_voronoiAttachCircle(rArc);
      return;
    }
    if (!rArc) {
      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      return;
    }
    d3_geom_voronoiDetachCircle(lArc);
    d3_geom_voronoiDetachCircle(rArc);
    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
      x: (cy * hb - by * hc) / d + ax,
      y: (bx * hc - cx * hb) / d + ay
    };
    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
    if (!pby2) return rfocx;
    var lArc = arc.P;
    if (!lArc) return -Infinity;
    site = lArc.site;
    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
    if (!plby2) return lfocx;
    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
    return (rfocx + lfocx) / 2;
  }
  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
    var rArc = arc.N;
    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
    var site = arc.site;
    return site.y === directrix ? site.x : Infinity;
  }
  function d3_geom_voronoiCell(site) {
    this.site = site;
    this.edges = [];
  }
  d3_geom_voronoiCell.prototype.prepare = function() {
    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
    while (iHalfEdge--) {
      edge = halfEdges[iHalfEdge].edge;
      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
    }
    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
    return halfEdges.length;
  };
  function d3_geom_voronoiCloseCells(extent) {
    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
    while (iCell--) {
      cell = cells[iCell];
      if (!cell || !cell.prepare()) continue;
      halfEdges = cell.edges;
      nHalfEdges = halfEdges.length;
      iHalfEdge = 0;
      while (iHalfEdge < nHalfEdges) {
        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
            x: x0,
            y: abs(x2 - x0) < ε ? y2 : y1
          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
            x: abs(y2 - y1) < ε ? x2 : x1,
            y: y1
          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
            x: x1,
            y: abs(x2 - x1) < ε ? y2 : y0
          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
            x: abs(y2 - y0) < ε ? x2 : x0,
            y: y0
          } : null), cell.site, null));
          ++nHalfEdges;
        }
      }
    }
  }
  function d3_geom_voronoiHalfEdgeOrder(a, b) {
    return b.angle - a.angle;
  }
  function d3_geom_voronoiCircle() {
    d3_geom_voronoiRedBlackNode(this);
    this.x = this.y = this.arc = this.site = this.cy = null;
  }
  function d3_geom_voronoiAttachCircle(arc) {
    var lArc = arc.P, rArc = arc.N;
    if (!lArc || !rArc) return;
    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
    if (lSite === rSite) return;
    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
    var d = 2 * (ax * cy - ay * cx);
    if (d >= -ε2) return;
    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
    circle.arc = arc;
    circle.site = cSite;
    circle.x = x + bx;
    circle.y = cy + Math.sqrt(x * x + y * y);
    circle.cy = cy;
    arc.circle = circle;
    var before = null, node = d3_geom_voronoiCircles._;
    while (node) {
      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
        if (node.L) node = node.L; else {
          before = node.P;
          break;
        }
      } else {
        if (node.R) node = node.R; else {
          before = node;
          break;
        }
      }
    }
    d3_geom_voronoiCircles.insert(before, circle);
    if (!before) d3_geom_voronoiFirstCircle = circle;
  }
  function d3_geom_voronoiDetachCircle(arc) {
    var circle = arc.circle;
    if (circle) {
      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
      d3_geom_voronoiCircles.remove(circle);
      d3_geom_voronoiCirclePool.push(circle);
      d3_geom_voronoiRedBlackNode(circle);
      arc.circle = null;
    }
  }
  function d3_geom_voronoiClipEdges(extent) {
    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
    while (i--) {
      e = edges[i];
      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
        e.a = e.b = null;
        edges.splice(i, 1);
      }
    }
  }
  function d3_geom_voronoiConnectEdge(edge, extent) {
    var vb = edge.b;
    if (vb) return true;
    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
    if (ry === ly) {
      if (fx < x0 || fx >= x1) return;
      if (lx > rx) {
        if (!va) va = {
          x: fx,
          y: y0
        }; else if (va.y >= y1) return;
        vb = {
          x: fx,
          y: y1
        };
      } else {
        if (!va) va = {
          x: fx,
          y: y1
        }; else if (va.y < y0) return;
        vb = {
          x: fx,
          y: y0
        };
      }
    } else {
      fm = (lx - rx) / (ry - ly);
      fb = fy - fm * fx;
      if (fm < -1 || fm > 1) {
        if (lx > rx) {
          if (!va) va = {
            x: (y0 - fb) / fm,
            y: y0
          }; else if (va.y >= y1) return;
          vb = {
            x: (y1 - fb) / fm,
            y: y1
          };
        } else {
          if (!va) va = {
            x: (y1 - fb) / fm,
            y: y1
          }; else if (va.y < y0) return;
          vb = {
            x: (y0 - fb) / fm,
            y: y0
          };
        }
      } else {
        if (ly < ry) {
          if (!va) va = {
            x: x0,
            y: fm * x0 + fb
          }; else if (va.x >= x1) return;
          vb = {
            x: x1,
            y: fm * x1 + fb
          };
        } else {
          if (!va) va = {
            x: x1,
            y: fm * x1 + fb
          }; else if (va.x < x0) return;
          vb = {
            x: x0,
            y: fm * x0 + fb
          };
        }
      }
    }
    edge.a = va;
    edge.b = vb;
    return true;
  }
  function d3_geom_voronoiEdge(lSite, rSite) {
    this.l = lSite;
    this.r = rSite;
    this.a = this.b = null;
  }
  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, rSite);
    d3_geom_voronoiEdges.push(edge);
    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
    return edge;
  }
  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, null);
    edge.a = va;
    edge.b = vb;
    d3_geom_voronoiEdges.push(edge);
    return edge;
  }
  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
    if (!edge.a && !edge.b) {
      edge.a = vertex;
      edge.l = lSite;
      edge.r = rSite;
    } else if (edge.l === rSite) {
      edge.b = vertex;
    } else {
      edge.a = vertex;
    }
  }
  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
    var va = edge.a, vb = edge.b;
    this.edge = edge;
    this.site = lSite;
    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
  }
  d3_geom_voronoiHalfEdge.prototype = {
    start: function() {
      return this.edge.l === this.site ? this.edge.a : this.edge.b;
    },
    end: function() {
      return this.edge.l === this.site ? this.edge.b : this.edge.a;
    }
  };
  function d3_geom_voronoiRedBlackTree() {
    this._ = null;
  }
  function d3_geom_voronoiRedBlackNode(node) {
    node.U = node.C = node.L = node.R = node.P = node.N = null;
  }
  d3_geom_voronoiRedBlackTree.prototype = {
    insert: function(after, node) {
      var parent, grandpa, uncle;
      if (after) {
        node.P = after;
        node.N = after.N;
        if (after.N) after.N.P = node;
        after.N = node;
        if (after.R) {
          after = after.R;
          while (after.L) after = after.L;
          after.L = node;
        } else {
          after.R = node;
        }
        parent = after;
      } else if (this._) {
        after = d3_geom_voronoiRedBlackFirst(this._);
        node.P = null;
        node.N = after;
        after.P = after.L = node;
        parent = after;
      } else {
        node.P = node.N = null;
        this._ = node;
        parent = null;
      }
      node.L = node.R = null;
      node.U = parent;
      node.C = true;
      after = node;
      while (parent && parent.C) {
        grandpa = parent.U;
        if (parent === grandpa.L) {
          uncle = grandpa.R;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.R) {
              d3_geom_voronoiRedBlackRotateLeft(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
          }
        } else {
          uncle = grandpa.L;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.L) {
              d3_geom_voronoiRedBlackRotateRight(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
          }
        }
        parent = after.U;
      }
      this._.C = false;
    },
    remove: function(node) {
      if (node.N) node.N.P = node.P;
      if (node.P) node.P.N = node.N;
      node.N = node.P = null;
      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
      if (parent) {
        if (parent.L === node) parent.L = next; else parent.R = next;
      } else {
        this._ = next;
      }
      if (left && right) {
        red = next.C;
        next.C = node.C;
        next.L = left;
        left.U = next;
        if (next !== right) {
          parent = next.U;
          next.U = node.U;
          node = next.R;
          parent.L = node;
          next.R = right;
          right.U = next;
        } else {
          next.U = parent;
          parent = next;
          node = next.R;
        }
      } else {
        red = node.C;
        node = next;
      }
      if (node) node.U = parent;
      if (red) return;
      if (node && node.C) {
        node.C = false;
        return;
      }
      do {
        if (node === this._) break;
        if (node === parent.L) {
          sibling = parent.R;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            sibling = parent.R;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.R || !sibling.R.C) {
              sibling.L.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateRight(this, sibling);
              sibling = parent.R;
            }
            sibling.C = parent.C;
            parent.C = sibling.R.C = false;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            node = this._;
            break;
          }
        } else {
          sibling = parent.L;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            sibling = parent.L;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.L || !sibling.L.C) {
              sibling.R.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
              sibling = parent.L;
            }
            sibling.C = parent.C;
            parent.C = sibling.L.C = false;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            node = this._;
            break;
          }
        }
        sibling.C = true;
        node = parent;
        parent = parent.U;
      } while (!node.C);
      if (node) node.C = false;
    }
  };
  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
    var p = node, q = node.R, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.R = q.L;
    if (p.R) p.R.U = p;
    q.L = p;
  }
  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
    var p = node, q = node.L, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.L = q.R;
    if (p.L) p.L.U = p;
    q.R = p;
  }
  function d3_geom_voronoiRedBlackFirst(node) {
    while (node.L) node = node.L;
    return node;
  }
  function d3_geom_voronoi(sites, bbox) {
    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
    d3_geom_voronoiEdges = [];
    d3_geom_voronoiCells = new Array(sites.length);
    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
    while (true) {
      circle = d3_geom_voronoiFirstCircle;
      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
        if (site.x !== x0 || site.y !== y0) {
          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
          d3_geom_voronoiAddBeach(site);
          x0 = site.x, y0 = site.y;
        }
        site = sites.pop();
      } else if (circle) {
        d3_geom_voronoiRemoveBeach(circle.arc);
      } else {
        break;
      }
    }
    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
    var diagram = {
      cells: d3_geom_voronoiCells,
      edges: d3_geom_voronoiEdges
    };
    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
    return diagram;
  }
  function d3_geom_voronoiVertexOrder(a, b) {
    return b.y - a.y || b.x - a.x;
  }
  d3.geom.voronoi = function(points) {
    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
    if (points) return voronoi(points);
    function voronoi(data) {
      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
          var s = e.start();
          return [ s.x, s.y ];
        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
        polygon.point = data[i];
      });
      return polygons;
    }
    function sites(data) {
      return data.map(function(d, i) {
        return {
          x: Math.round(fx(d, i) / ε) * ε,
          y: Math.round(fy(d, i) / ε) * ε,
          i: i
        };
      });
    }
    voronoi.links = function(data) {
      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
        return edge.l && edge.r;
      }).map(function(edge) {
        return {
          source: data[edge.l.i],
          target: data[edge.r.i]
        };
      });
    };
    voronoi.triangles = function(data) {
      var triangles = [];
      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
        while (++j < m) {
          e0 = e1;
          s0 = s1;
          e1 = edges[j].edge;
          s1 = e1.l === site ? e1.r : e1.l;
          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
          }
        }
      });
      return triangles;
    };
    voronoi.x = function(_) {
      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
    };
    voronoi.y = function(_) {
      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
    };
    voronoi.clipExtent = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
      return voronoi;
    };
    voronoi.size = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
    };
    return voronoi;
  };
  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
  function d3_geom_voronoiTriangleArea(a, b, c) {
    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
  }
  d3.geom.delaunay = function(vertices) {
    return d3.geom.voronoi().triangles(vertices);
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
    if (compat = arguments.length) {
      x = d3_geom_quadtreeCompatX;
      y = d3_geom_quadtreeCompatY;
      if (compat === 3) {
        y2 = y1;
        x2 = x1;
        y1 = x1 = 0;
      }
      return quadtree(points);
    }
    function quadtree(data) {
      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
      if (x1 != null) {
        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
      } else {
        x2_ = y2_ = -(x1_ = y1_ = Infinity);
        xs = [], ys = [];
        n = data.length;
        if (compat) for (i = 0; i < n; ++i) {
          d = data[i];
          if (d.x < x1_) x1_ = d.x;
          if (d.y < y1_) y1_ = d.y;
          if (d.x > x2_) x2_ = d.x;
          if (d.y > y2_) y2_ = d.y;
          xs.push(d.x);
          ys.push(d.y);
        } else for (i = 0; i < n; ++i) {
          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
          if (x_ < x1_) x1_ = x_;
          if (y_ < y1_) y1_ = y_;
          if (x_ > x2_) x2_ = x_;
          if (y_ > y2_) y2_ = y_;
          xs.push(x_);
          ys.push(y_);
        }
      }
      var dx = x2_ - x1_, dy = y2_ - y1_;
      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
      function insert(n, d, x, y, x1, y1, x2, y2) {
        if (isNaN(x) || isNaN(y)) return;
        if (n.leaf) {
          var nx = n.x, ny = n.y;
          if (nx != null) {
            if (abs(nx - x) + abs(ny - y) < .01) {
              insertChild(n, d, x, y, x1, y1, x2, y2);
            } else {
              var nPoint = n.point;
              n.x = n.y = n.point = null;
              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
              insertChild(n, d, x, y, x1, y1, x2, y2);
            }
          } else {
            n.x = x, n.y = y, n.point = d;
          }
        } else {
          insertChild(n, d, x, y, x1, y1, x2, y2);
        }
      }
      function insertChild(n, d, x, y, x1, y1, x2, y2) {
        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
        n.leaf = false;
        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
        if (right) x1 = xm; else x2 = xm;
        if (below) y1 = ym; else y2 = ym;
        insert(n, d, x, y, x1, y1, x2, y2);
      }
      var root = d3_geom_quadtreeNode();
      root.add = function(d) {
        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
      };
      root.visit = function(f) {
        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
      };
      root.find = function(point) {
        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
      };
      i = -1;
      if (x1 == null) {
        while (++i < n) {
          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
        }
        --i;
      } else data.forEach(root.add);
      xs = ys = data = d = null;
      return root;
    }
    quadtree.x = function(_) {
      return arguments.length ? (x = _, quadtree) : x;
    };
    quadtree.y = function(_) {
      return arguments.length ? (y = _, quadtree) : y;
    };
    quadtree.extent = function(_) {
      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
      y2 = +_[1][1];
      return quadtree;
    };
    quadtree.size = function(_) {
      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
      return quadtree;
    };
    return quadtree;
  };
  function d3_geom_quadtreeCompatX(d) {
    return d.x;
  }
  function d3_geom_quadtreeCompatY(d) {
    return d.y;
  }
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null,
      x: null,
      y: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
    var minDistance2 = Infinity, closestPoint;
    (function find(node, x1, y1, x2, y2) {
      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
      if (point = node.point) {
        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
        if (distance2 < minDistance2) {
          var distance = Math.sqrt(minDistance2 = distance2);
          x0 = x - distance, y0 = y - distance;
          x3 = x + distance, y3 = y + distance;
          closestPoint = point;
        }
      }
      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
        if (node = children[i & 3]) switch (i & 3) {
         case 0:
          find(node, x1, y1, xm, ym);
          break;

         case 1:
          find(node, xm, y1, x2, ym);
          break;

         case 2:
          find(node, x1, ym, xm, y2);
          break;

         case 3:
          find(node, xm, ym, x2, y2);
          break;
        }
      }
    })(root, x0, y0, x3, y3);
    return closestPoint;
  }
  d3.interpolateRgb = d3_interpolateRgb;
  function d3_interpolateRgb(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  }
  d3.interpolateObject = d3_interpolateObject;
  function d3_interpolateObject(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolate(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  }
  d3.interpolateNumber = d3_interpolateNumber;
  function d3_interpolateNumber(a, b) {
    a = +a, b = +b;
    return function(t) {
      return a * (1 - t) + b * t;
    };
  }
  d3.interpolateString = d3_interpolateString;
  function d3_interpolateString(a, b) {
    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
    a = a + "", b = b + "";
    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
      if ((bs = bm.index) > bi) {
        bs = b.slice(bi, bs);
        if (s[i]) s[i] += bs; else s[++i] = bs;
      }
      if ((am = am[0]) === (bm = bm[0])) {
        if (s[i]) s[i] += bm; else s[++i] = bm;
      } else {
        s[++i] = null;
        q.push({
          i: i,
          x: d3_interpolateNumber(am, bm)
        });
      }
      bi = d3_interpolate_numberB.lastIndex;
    }
    if (bi < b.length) {
      bs = b.slice(bi);
      if (s[i]) s[i] += bs; else s[++i] = bs;
    }
    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
      return b(t) + "";
    }) : function() {
      return b;
    } : (b = q.length, function(t) {
      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    });
  }
  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
  d3.interpolate = d3_interpolate;
  function d3_interpolate(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  }
  d3.interpolators = [ function(a, b) {
    var t = typeof b;
    return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) || /^(#|rgb\(|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
  } ];
  d3.interpolateArray = d3_interpolateArray;
  function d3_interpolateArray(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
    for (;i < na; ++i) c[i] = a[i];
    for (;i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  }
  var d3_ease_default = function() {
    return d3_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_identity;
    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_quad(t) {
    return t * t;
  }
  function d3_ease_cubic(t) {
    return t * t * t;
  }
  function d3_ease_cubicInOut(t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t, t3 = t2 * t;
    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * halfπ);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
    return function(t) {
      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.interpolateHcl = d3_interpolateHcl;
  function d3_interpolateHcl(a, b) {
    a = d3.hcl(a);
    b = d3.hcl(b);
    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
    };
  }
  d3.interpolateHsl = d3_interpolateHsl;
  function d3_interpolateHsl(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
    };
  }
  d3.interpolateLab = d3_interpolateLab;
  function d3_interpolateLab(a, b) {
    a = d3.lab(a);
    b = d3.lab(b);
    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
    return function(t) {
      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
    };
  }
  d3.interpolateRound = d3_interpolateRound;
  function d3_interpolateRound(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  }
  d3.transform = function(string) {
    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      if (string != null) {
        g.setAttribute("transform", string);
        var t = g.transform.baseVal.consolidate();
      }
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolateTransform = d3_interpolateTransform;
  function d3_interpolateTransformPop(s) {
    return s.length ? s.pop() + "," : "";
  }
  function d3_interpolateTranslate(ta, tb, s, q) {
    if (ta[0] !== tb[0] || ta[1] !== tb[1]) {
      var i = s.push("translate(", null, ",", null, ")");
      q.push({
        i: i - 4,
        x: d3_interpolateNumber(ta[0], tb[0])
      }, {
        i: i - 2,
        x: d3_interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    }
  }
  function d3_interpolateRotate(ra, rb, s, q) {
    if (ra !== rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
        x: d3_interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
    }
  }
  function d3_interpolateSkew(wa, wb, s, q) {
    if (wa !== wb) {
      q.push({
        i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
        x: d3_interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
    }
  }
  function d3_interpolateScale(ka, kb, s, q) {
    if (ka[0] !== kb[0] || ka[1] !== kb[1]) {
      var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
      q.push({
        i: i - 4,
        x: d3_interpolateNumber(ka[0], kb[0])
      }, {
        i: i - 2,
        x: d3_interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] !== 1 || kb[1] !== 1) {
      s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
    }
  }
  function d3_interpolateTransform(a, b) {
    var s = [], q = [];
    a = d3.transform(a), b = d3.transform(b);
    d3_interpolateTranslate(a.translate, b.translate, s, q);
    d3_interpolateRotate(a.rotate, b.rotate, s, q);
    d3_interpolateSkew(a.skew, b.skew, s, q);
    d3_interpolateScale(a.scale, b.scale, s, q);
    a = b = null;
    return function(t) {
      var i = -1, n = q.length, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  }
  function d3_uninterpolateNumber(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return (x - a) / b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) / b));
    };
  }
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (τ - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: groupSums[di]
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, _, x2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
          if (dw * dw / theta2 < dn) {
            if (dn < chargeDistance2) {
              var k = quad.charge / dn;
              node.px -= dx * k;
              node.py -= dy * k;
            }
            return true;
          }
          if (quad.point && dn && dn < chargeDistance2) {
            var k = quad.pointCharge / dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        timer = null;
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = typeof x === "function" ? x : +x;
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = typeof x === "function" ? x : +x;
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = +x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.chargeDistance = function(x) {
      if (!arguments.length) return Math.sqrt(chargeDistance2);
      chargeDistance2 = x * x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = +x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return Math.sqrt(theta2);
      theta2 = x * x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      x = +x;
      if (alpha) {
        if (x > 0) {
          alpha = x;
        } else {
          timer.c = null, timer.t = NaN, timer = null;
          event.end({
            type: "end",
            alpha: alpha = 0
          });
        }
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        timer = d3_timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      distances = [];
      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
      strengths = [];
      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        if (!neighbors) {
          neighbors = new Array(n);
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        var candidates = neighbors[i], j = -1, l = candidates.length, x;
        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
        return Math.random() * size;
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
      if (!arguments.length) return drag;
      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
    };
    function dragmove(d) {
      d.px = d3.event.x, d.py = d3.event.y;
      force.resume();
    }
    return d3.rebind(force, event, "on");
  };
  function d3_layout_forceDragstart(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragend(d) {
    d.fixed &= ~6;
  }
  function d3_layout_forceMouseover(d) {
    d.fixed |= 4;
    d.px = d.x, d.py = d.y;
  }
  function d3_layout_forceMouseout(d) {
    d.fixed &= ~4;
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function hierarchy(root) {
      var stack = [ root ], nodes = [], node;
      root.depth = 0;
      while ((node = stack.pop()) != null) {
        nodes.push(node);
        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
          var n, childs, child;
          while (--n >= 0) {
            stack.push(child = childs[n]);
            child.parent = node;
            child.depth = node.depth + 1;
          }
          if (value) node.value = 0;
          node.children = childs;
        } else {
          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
          delete node.children;
        }
      }
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var childs, parent;
        if (sort && (childs = node.children)) childs.sort(sort);
        if (value && (parent = node.parent)) parent.value += node.value;
      });
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      if (value) {
        d3_layout_hierarchyVisitBefore(root, function(node) {
          if (node.children) node.value = 0;
        });
        d3_layout_hierarchyVisitAfter(root, function(node) {
          var parent;
          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
          if (parent = node.parent) parent.value += node.value;
        });
      }
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.nodes = object;
    object.links = d3_layout_hierarchyLinks;
    return object;
  }
  function d3_layout_hierarchyVisitBefore(node, callback) {
    var nodes = [ node ];
    while ((node = nodes.pop()) != null) {
      callback(node);
      if ((children = node.children) && (n = children.length)) {
        var n, children;
        while (--n >= 0) nodes.push(children[n]);
      }
    }
  }
  function d3_layout_hierarchyVisitAfter(node, callback) {
    var nodes = [ node ], nodes2 = [];
    while ((node = nodes.pop()) != null) {
      nodes2.push(node);
      if ((children = node.children) && (n = children.length)) {
        var i = -1, n, children;
        while (++i < n) nodes.push(children[i]);
      }
    }
    while ((node = nodes2.pop()) != null) {
      callback(node);
    }
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
    function pie(data) {
      var n = data.length, values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      index.forEach(function(i) {
        arcs[i] = {
          data: data[i],
          value: v = values[i],
          startAngle: a,
          endAngle: a += v * k + pa,
          padAngle: p
        };
      });
      return arcs;
    }
    pie.value = function(_) {
      if (!arguments.length) return value;
      value = _;
      return pie;
    };
    pie.sort = function(_) {
      if (!arguments.length) return sort;
      sort = _;
      return pie;
    };
    pie.startAngle = function(_) {
      if (!arguments.length) return startAngle;
      startAngle = _;
      return pie;
    };
    pie.endAngle = function(_) {
      if (!arguments.length) return endAngle;
      endAngle = _;
      return pie;
    };
    pie.padAngle = function(_) {
      if (!arguments.length) return padAngle;
      padAngle = _;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      if (!(n = data.length)) return data;
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var m = series[0].length, n, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (;i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
        return radius;
      };
      root.x = root.y = 0;
      d3_layout_hierarchyVisitAfter(root, function(d) {
        d.r = +r(d.value);
      });
      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
      if (padding) {
        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r += dr;
        });
        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r -= dr;
        });
      }
      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
      return nodes;
    }
    pack.size = function(_) {
      if (!arguments.length) return size;
      size = _;
      return pack;
    };
    pack.radius = function(_) {
      if (!arguments.length) return radius;
      radius = _ == null || typeof _ === "function" ? _ : +_;
      return pack;
    };
    pack.padding = function(_) {
      if (!arguments.length) return padding;
      padding = +_;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return .999 * dr * dr > dx * dx + dy * dy;
  }
  function d3_layout_packSiblings(node) {
    if (!(nodes = node.children) || !(n = nodes.length)) return;
    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (i = 0; i < n; i++) {
      c = nodes[i];
      c.x -= cx;
      c.y -= cy;
      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
    }
    node.r = cr;
    nodes.forEach(d3_layout_packUnlink);
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
      d3_layout_hierarchyVisitBefore(root1, secondWalk);
      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
        var left = root0, right = root0, bottom = root0;
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          if (node.x < left.x) left = node;
          if (node.x > right.x) right = node;
          if (node.depth > bottom.depth) bottom = node;
        });
        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          node.x = (node.x + tx) * kx;
          node.y = node.depth * ky;
        });
      }
      return nodes;
    }
    function wrapTree(root0) {
      var root1 = {
        A: null,
        children: [ root0 ]
      }, queue = [ root1 ], node1;
      while ((node1 = queue.pop()) != null) {
        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
          queue.push((children[i] = child = {
            _: children[i],
            parent: node1,
            children: (child = children[i].children) && child.slice() || [],
            A: null,
            a: null,
            z: 0,
            m: 0,
            c: 0,
            s: 0,
            t: null,
            i: i
          }).a = child);
        }
      }
      return root1.children[0];
    }
    function firstWalk(v) {
      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
      if (children.length) {
        d3_layout_treeShift(v);
        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
        if (w) {
          v.z = w.z + separation(v._, w._);
          v.m = v.z - midpoint;
        } else {
          v.z = midpoint;
        }
      } else if (w) {
        v.z = w.z + separation(v._, w._);
      }
      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
    }
    function secondWalk(v) {
      v._.x = v.z + v.parent.m;
      v.m += v.parent.m;
    }
    function apportion(v, w, ancestor) {
      if (w) {
        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
          vom = d3_layout_treeLeft(vom);
          vop = d3_layout_treeRight(vop);
          vop.a = v;
          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
          if (shift > 0) {
            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
            sip += shift;
            sop += shift;
          }
          sim += vim.m;
          sip += vip.m;
          som += vom.m;
          sop += vop.m;
        }
        if (vim && !d3_layout_treeRight(vop)) {
          vop.t = vim;
          vop.m += sim - sop;
        }
        if (vip && !d3_layout_treeLeft(vom)) {
          vom.t = vip;
          vom.m += sip - som;
          ancestor = v;
        }
      }
      return ancestor;
    }
    function sizeNode(node) {
      node.x *= size[0];
      node.y = node.depth * size[1];
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null ? sizeNode : null;
      return tree;
    };
    tree.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) == null ? null : sizeNode;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(v) {
    var children = v.children;
    return children.length ? children[0] : v.t;
  }
  function d3_layout_treeRight(v) {
    var children = v.children, n;
    return (n = children.length) ? children[n - 1] : v.t;
  }
  function d3_layout_treeMove(wm, wp, shift) {
    var change = shift / (wp.i - wm.i);
    wp.c -= change;
    wp.s += shift;
    wm.c += change;
    wp.z += shift;
    wp.m += shift;
  }
  function d3_layout_treeShift(v) {
    var shift = 0, change = 0, children = v.children, i = children.length, w;
    while (--i >= 0) {
      w = children[i];
      w.z += shift;
      w.m += shift;
      shift += w.s + (change += w.c);
    }
  }
  function d3_layout_treeAncestor(vim, v, ancestor) {
    return vim.a.parent === v.parent ? vim.a : ancestor;
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
        node.x = (node.x - root.x) * size[0];
        node.y = (root.y - node.y) * size[1];
      } : function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null;
      return cluster;
    };
    cluster.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) != null;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = root.y = 0;
      if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
      padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    treemap.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  d3.random = {
    normal: function(µ, σ) {
      var n = arguments.length;
      if (n < 2) σ = 1;
      if (n < 1) µ = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    },
    logNormal: function() {
      var random = d3.random.normal.apply(d3, arguments);
      return function() {
        return Math.exp(random());
      };
    },
    bates: function(m) {
      var random = d3.random.irwinHall(m);
      return function() {
        return random() / m;
      };
    },
    irwinHall: function(m) {
      return function() {
        for (var s = 0, j = 0; j < m; j++) s += Math.random();
        return s;
      };
    }
  };
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0, i0 = i1, i1 = dx;
      dx = x0, x0 = x1, x1 = dx;
    }
    domain[i0] = nice.floor(x0);
    domain[i1] = nice.ceil(x1);
    return domain;
  }
  function d3_scale_niceStep(step) {
    return step ? {
      floor: function(x) {
        return Math.floor(x / step) * step;
      },
      ceil: function(x) {
        return Math.ceil(x / step) * step;
      }
    } : d3_scale_niceIdentity;
  }
  var d3_scale_niceIdentity = {
    floor: d3_identity,
    ceil: d3_identity
  };
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3_interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3_interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      d3_scale_linearNice(domain, m);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(domain, m) {
    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
    d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
    return domain;
  }
  function d3_scale_linearTickRange(domain, m) {
    if (m == null) m = 10;
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m, format) {
    var range = d3_scale_linearTickRange(domain, m);
    if (format) {
      var match = d3_format_re.exec(format);
      match.shift();
      if (match[8] === "s") {
        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
        match[8] = "f";
        format = d3.format(match.join(""));
        return function(d) {
          return format(prefix.scale(d)) + prefix.symbol;
        };
      }
      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
      format = match.join("");
    } else {
      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
    }
    return d3.format(format);
  }
  var d3_scale_linearFormatSignificant = {
    s: 1,
    g: 1,
    p: 1,
    r: 1,
    e: 1
  };
  function d3_scale_linearPrecision(value) {
    return -Math.floor(Math.log(value) / Math.LN10 + .01);
  }
  function d3_scale_linearFormatPrecision(type, range) {
    var p = d3_scale_linearPrecision(range[2]);
    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
  };
  function d3_scale_log(linear, base, positive, domain) {
    function log(x) {
      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
    }
    function pow(x) {
      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
    }
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      positive = x[0] >= 0;
      linear.domain((domain = x.map(Number)).map(log));
      return scale;
    };
    scale.base = function(_) {
      if (!arguments.length) return base;
      base = +_;
      linear.domain(domain.map(log));
      return scale;
    };
    scale.nice = function() {
      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
      linear.domain(niced);
      domain = niced.map(pow);
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
      if (isFinite(j - i)) {
        if (positive) {
          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        } else {
          ticks.push(pow(i));
          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (!arguments.length) return d3_scale_logFormat;
      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
      var k = Math.max(1, base * n / scale.ticks().length);
      return function(d) {
        var i = d / pow(Math.round(log(d)));
        if (i * base < base - .5) i *= base;
        return i <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), base, positive, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
    floor: function(x) {
      return -Math.ceil(-x);
    },
    ceil: function(x) {
      return -Math.floor(-x);
    }
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
  };
  function d3_scale_pow(linear, exponent, domain) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      linear.domain((domain = x.map(Number)).map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      return scale.domain(d3_scale_linearNice(domain, m));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      linear.domain(domain.map(powp));
      return scale;
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      a: [ [] ]
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map();
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t].apply(scale, ranger.a);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        a: arguments
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
      0) : (stop - start) / (domain.length - 1 + padding);
      range = steps(start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundPoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
      0) : (stop - start) / (domain.length - 1 + padding) | 0;
      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
      rangeBand = 0;
      ranger = {
        t: "rangeRoundPoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
      range = steps(start + step * outerPadding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.a[0]);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      y = y < 0 ? NaN : y / kx + x0;
      return [ y, y + 1 / kx ];
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.threshold = function() {
    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
  };
  function d3_scale_threshold(domain, range) {
    function scale(x) {
      if (x <= x) return range[d3.bisect(domain, x)];
    }
    scale.domain = function(_) {
      if (!arguments.length) return domain;
      domain = _;
      return scale;
    };
    scale.range = function(_) {
      if (!arguments.length) return range;
      range = _;
      return scale;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return [ domain[y - 1], domain[y] ];
    };
    scale.copy = function() {
      return d3_scale_threshold(domain, range);
    };
    return scale;
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  function d3_zero() {
    return 0;
  }
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
    function arc() {
      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
        if (!cw) p1 *= -1;
        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
      }
      if (r1) {
        x0 = r1 * Math.cos(a0 + p1);
        y0 = r1 * Math.sin(a0 + p1);
        x1 = r1 * Math.cos(a1 - p1);
        y1 = r1 * Math.sin(a1 - p1);
        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
          var h1 = (a0 + a1) / 2;
          x0 = r1 * Math.cos(h1);
          y0 = r1 * Math.sin(h1);
          x1 = y1 = null;
        }
      } else {
        x0 = y0 = 0;
      }
      if (r0) {
        x2 = r0 * Math.cos(a1 - p0);
        y2 = r0 * Math.sin(a1 - p0);
        x3 = r0 * Math.cos(a0 + p0);
        y3 = r0 * Math.sin(a0 + p0);
        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
          var h0 = (a0 + a1) / 2;
          x2 = r0 * Math.cos(h0);
          y2 = r0 * Math.sin(h0);
          x3 = y3 = null;
        }
      } else {
        x2 = y2 = 0;
      }
      if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
        cr = r0 < r1 ^ cw ? 0 : 1;
        var rc1 = rc, rc0 = rc;
        if (da < π) {
          var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
          rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
          rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
        }
        if (x1 != null) {
          var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
          if (rc === rc1) {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
          } else {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
          }
        } else {
          path.push("M", x0, ",", y0);
        }
        if (x3 != null) {
          var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
          if (rc === rc0) {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          } else {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          }
        } else {
          path.push("L", x2, ",", y2);
        }
      } else {
        path.push("M", x0, ",", y0);
        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
        path.push("L", x2, ",", y2);
        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
      }
      path.push("Z");
      return path.join("");
    }
    function circleSegment(r1, cw) {
      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.cornerRadius = function(v) {
      if (!arguments.length) return cornerRadius;
      cornerRadius = d3_functor(v);
      return arc;
    };
    arc.padRadius = function(v) {
      if (!arguments.length) return padRadius;
      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.padAngle = function(v) {
      if (!arguments.length) return padAngle;
      padAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcAuto = "auto";
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_arcPadAngle(d) {
    return d && d.padAngle;
  }
  function d3_svg_arcSweep(x0, y0, x1, y1) {
    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
  }
  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
  }
  function d3_svg_line(projection) {
    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolate(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    step: d3_svg_lineStep,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  d3_svg_lineInterpolators.forEach(function(key, value) {
    value.key = key;
    value.closed = /-closed$/.test(key);
  });
  function d3_svg_lineLinear(points) {
    return points.length > 1 ? points.join("L") : points + "Z";
  }
  function d3_svg_lineLinearClosed(points) {
    return points.join("L") + "Z";
  }
  function d3_svg_lineStep(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
    if (n > 1) path.push("H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    points.push(points[n - 1]);
    while (++i <= n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    points.pop();
    path.push("L", pi);
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (abs(d) < ε) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] - halfπ;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      interpolateReverse = interpolate.reverse || interpolate;
      L = interpolate.closed ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(d3_identity);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  d3.svg.diagonal = function() {
    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / π);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
  d3_selectionPrototype.transition = function(name) {
    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
      time: Date.now(),
      ease: d3_ease_cubicInOut,
      delay: 0,
      duration: 250
    };
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_selectionPrototype.interrupt = function(name) {
    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
  };
  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
  function d3_selection_interruptNS(ns) {
    return function() {
      var lock, activeId, active;
      if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
        active.timer.c = null;
        active.timer.t = NaN;
        if (--lock.count) delete lock[activeId]; else delete this[ns];
        lock.active += .5;
        active.event && active.event.interrupt.call(this, this.__data__, active.index);
      }
    };
  }
  function d3_transition(groups, ns, id) {
    d3_subclass(groups, d3_transitionPrototype);
    groups.namespace = ns;
    groups.id = id;
    return groups;
  }
  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
  d3_transitionPrototype.node = d3_selectionPrototype.node;
  d3_transitionPrototype.size = d3_selectionPrototype.size;
  d3.transition = function(selection, name) {
    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
  };
  d3.transition.prototype = d3_transitionPrototype;
  d3_transitionPrototype.select = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
          subgroup.push(subnode);
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          transition = node[ns][id];
          subnodes = selector.call(node, node.__data__, i, j);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
            subgroup.push(subnode);
          }
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.namespace, this.id);
  };
  d3_transitionPrototype.tween = function(name, tween) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
    return d3_selection_each(this, tween == null ? function(node) {
      node[ns][id].tween.remove(name);
    } : function(node) {
      node[ns][id].tween.set(name, tween);
    });
  };
  function d3_transition_tween(groups, name, value, tween) {
    var id = groups.id, ns = groups.namespace;
    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
    } : (value = tween(value), function(node) {
      node[ns][id].tween.set(name, value);
    }));
  }
  d3_transitionPrototype.attr = function(nameNS, value) {
    if (arguments.length < 2) {
      for (value in nameNS) this.attr(value, nameNS[value]);
      return this;
    }
    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrTween(b) {
      return b == null ? attrNull : (b += "", function() {
        var a = this.getAttribute(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttribute(name, i(t));
        });
      });
    }
    function attrTweenNS(b) {
      return b == null ? attrNullNS : (b += "", function() {
        var a = this.getAttributeNS(name.space, name.local), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttributeNS(name.space, name.local, i(t));
        });
      });
    }
    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.style(priority, name[priority], value);
        return this;
      }
      priority = "";
    }
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleString(b) {
      return b == null ? styleNull : (b += "", function() {
        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
        return a !== b && (i = d3_interpolate(a, b), function(t) {
          this.style.setProperty(name, i(t), priority);
        });
      });
    }
    return d3_transition_tween(this, "style." + name, value, styleString);
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    function styleTween(d, i) {
      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
      return f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    }
    return this.tween("style." + name, styleTween);
  };
  d3_transitionPrototype.text = function(value) {
    return d3_transition_tween(this, "text", value, d3_transition_text);
  };
  function d3_transition_text(b) {
    if (b == null) b = "";
    return function() {
      this.textContent = b;
    };
  }
  d3_transitionPrototype.remove = function() {
    var ns = this.namespace;
    return this.each("end.transition", function() {
      var p;
      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.ease = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].ease;
    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
    return d3_selection_each(this, function(node) {
      node[ns][id].ease = value;
    });
  };
  d3_transitionPrototype.delay = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].delay;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].delay = +value.call(node, node.__data__, i, j);
    } : (value = +value, function(node) {
      node[ns][id].delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].duration;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
    } : (value = Math.max(1, value), function(node) {
      node[ns][id].duration = value;
    }));
  };
  d3_transitionPrototype.each = function(type, listener) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) {
      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
      try {
        d3_transitionInheritId = id;
        d3_selection_each(this, function(node, i, j) {
          d3_transitionInherit = node[ns][id];
          type.call(node, node.__data__, i, j);
        });
      } finally {
        d3_transitionInherit = inherit;
        d3_transitionInheritId = inheritId;
      }
    } else {
      d3_selection_each(this, function(node) {
        var transition = node[ns][id];
        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
      });
    }
    return this;
  };
  d3_transitionPrototype.transition = function() {
    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if (node = group[i]) {
          transition = node[ns][id0];
          d3_transitionNode(node, i, ns, id1, {
            time: transition.time,
            ease: transition.ease,
            delay: transition.delay + transition.duration,
            duration: transition.duration
          });
        }
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id1);
  };
  function d3_transitionNamespace(name) {
    return name == null ? "__transition__" : "__transition_" + name + "__";
  }
  function d3_transitionNode(node, i, ns, id, inherit) {
    var lock = node[ns] || (node[ns] = {
      active: 0,
      count: 0
    }), transition = lock[id], time, timer, duration, ease, tweens;
    function schedule(elapsed) {
      var delay = transition.delay;
      timer.t = delay + time;
      if (delay <= elapsed) return start(elapsed - delay);
      timer.c = start;
    }
    function start(elapsed) {
      var activeId = lock.active, active = lock[activeId];
      if (active) {
        active.timer.c = null;
        active.timer.t = NaN;
        --lock.count;
        delete lock[activeId];
        active.event && active.event.interrupt.call(node, node.__data__, active.index);
      }
      for (var cancelId in lock) {
        if (+cancelId < id) {
          var cancel = lock[cancelId];
          cancel.timer.c = null;
          cancel.timer.t = NaN;
          --lock.count;
          delete lock[cancelId];
        }
      }
      timer.c = tick;
      d3_timer(function() {
        if (timer.c && tick(elapsed || 1)) {
          timer.c = null;
          timer.t = NaN;
        }
        return 1;
      }, 0, time);
      lock.active = id;
      transition.event && transition.event.start.call(node, node.__data__, i);
      tweens = [];
      transition.tween.forEach(function(key, value) {
        if (value = value.call(node, node.__data__, i)) {
          tweens.push(value);
        }
      });
      ease = transition.ease;
      duration = transition.duration;
    }
    function tick(elapsed) {
      var t = elapsed / duration, e = ease(t), n = tweens.length;
      while (n > 0) {
        tweens[--n].call(node, e);
      }
      if (t >= 1) {
        transition.event && transition.event.end.call(node, node.__data__, i);
        if (--lock.count) delete lock[id]; else delete node[ns];
        return 1;
      }
    }
    if (!transition) {
      time = inherit.time;
      timer = d3_timer(schedule, 0, time);
      transition = lock[id] = {
        tween: new d3_Map(),
        time: time,
        timer: timer,
        delay: inherit.delay,
        duration: inherit.duration,
        ease: inherit.ease,
        index: i
      };
      inherit = null;
      ++lock.count;
    }
  }
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
        d3.transition(path));
        tickEnter.append("line");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
        if (orient === "bottom" || orient === "top") {
          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
        } else {
          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
        }
        lineEnter.attr(y2, sign * innerTickSize);
        textEnter.attr(y1, sign * tickSpacing);
        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
        if (scale1.rangeBand) {
          var x = scale1, dx = x.rangeBand() / 2;
          scale0 = scale1 = function(d) {
            return x(d) + dx;
          };
        } else if (scale0.rangeBand) {
          scale0 = scale1;
        } else {
          tickExit.call(tickTransform, scale1, scale0);
        }
        tickEnter.call(tickTransform, scale0, scale1);
        tickUpdate.call(tickTransform, scale1, scale1);
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = d3_array(arguments);
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x) {
      var n = arguments.length;
      if (!n) return innerTickSize;
      innerTickSize = +x;
      outerTickSize = +arguments[n - 1];
      return axis;
    };
    axis.innerTickSize = function(x) {
      if (!arguments.length) return innerTickSize;
      innerTickSize = +x;
      return axis;
    };
    axis.outerTickSize = function(x) {
      if (!arguments.length) return outerTickSize;
      outerTickSize = +x;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function() {
      return arguments.length && axis;
    };
    return axis;
  };
  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
    top: 1,
    right: 1,
    bottom: 1,
    left: 1
  };
  function d3_svg_axisX(selection, x0, x1) {
    selection.attr("transform", function(d) {
      var v0 = x0(d);
      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y0, y1) {
    selection.attr("transform", function(d) {
      var v0 = y0(d);
      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
    });
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
    function brush(g) {
      g.each(function() {
        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        var background = g.selectAll(".background").data([ 0 ]);
        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
        var resize = g.selectAll(".resize").data(resizes, d3_identity);
        resize.exit().remove();
        resize.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        resize.style("display", brush.empty() ? "none" : null);
        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
        if (x) {
          range = d3_scaleRange(x);
          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
          redrawX(gUpdate);
        }
        if (y) {
          range = d3_scaleRange(y);
          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
          redrawY(gUpdate);
        }
        redraw(gUpdate);
      });
    }
    brush.event = function(g) {
      g.each(function() {
        var event_ = event.of(this, arguments), extent1 = {
          x: xExtent,
          y: yExtent,
          i: xExtentDomain,
          j: yExtentDomain
        }, extent0 = this.__chart__ || extent1;
        this.__chart__ = extent1;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.brush", function() {
            xExtentDomain = extent0.i;
            yExtentDomain = extent0.j;
            xExtent = extent0.x;
            yExtent = extent0.y;
            event_({
              type: "brushstart"
            });
          }).tween("brush:brush", function() {
            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
            xExtentDomain = yExtentDomain = null;
            return function(t) {
              xExtent = extent1.x = xi(t);
              yExtent = extent1.y = yi(t);
              event_({
                type: "brush",
                mode: "resize"
              });
            };
          }).each("end.brush", function() {
            xExtentDomain = extent1.i;
            yExtentDomain = extent1.j;
            event_({
              type: "brush",
              mode: "resize"
            });
            event_({
              type: "brushend"
            });
          });
        } else {
          event_({
            type: "brushstart"
          });
          event_({
            type: "brush",
            mode: "resize"
          });
          event_({
            type: "brushend"
          });
        }
      });
    };
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", xExtent[0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", yExtent[0]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (d3.event.changedTouches) {
        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
      } else {
        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
      }
      g.interrupt().selectAll("*").interrupt();
      if (dragging) {
        origin[0] = xExtent[0] - origin[0];
        origin[1] = yExtent[0] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
        origin[0] = xExtent[ex];
        origin[1] = yExtent[ey];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= xExtent[1];
            origin[1] -= yExtent[1];
            dragging = 2;
          }
          d3_eventPreventDefault();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += xExtent[1];
          origin[1] += yExtent[1];
          dragging = 0;
          d3_eventPreventDefault();
        }
      }
      function brushmove() {
        var point = d3.mouse(target), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
            origin[0] = xExtent[+(point[0] < center[0])];
            origin[1] = yExtent[+(point[1] < center[1])];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0] != min || extent[1] != max) {
          if (i) yExtentDomain = null; else xExtentDomain = null;
          extent[0] = min;
          extent[1] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        dragRestore();
        event_({
          type: "brushend"
        });
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.clamp = function(z) {
      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        if (x) {
          if (xExtentDomain) {
            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
          } else {
            x0 = xExtent[0], x1 = xExtent[1];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          if (yExtentDomain) {
            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
          } else {
            y0 = yExtent[0], y1 = yExtent[1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        xExtentDomain = [ x0, x1 ];
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        yExtentDomain = [ y0, y1 ];
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
      }
      return brush;
    };
    brush.clear = function() {
      if (!brush.empty()) {
        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
        xExtentDomain = yExtentDomain = null;
      }
      return brush;
    };
    brush.empty = function() {
      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
  var d3_time_formatUtc = d3_time_format.utc;
  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  d3_time.second = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3_time.seconds = d3_time.second.range;
  d3_time.seconds.utc = d3_time.second.utc.range;
  d3_time.minute = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3_time.minutes = d3_time.minute.range;
  d3_time.minutes.utc = d3_time.minute.utc.range;
  d3_time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3_time.hours = d3_time.hour.range;
  d3_time.hours.utc = d3_time.hour.utc.range;
  d3_time.month = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3_time.months = d3_time.month.range;
  d3_time.months.utc = d3_time.month.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    function tickMethod(extent, count) {
      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
        return d / 31536e6;
      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
    }
    scale.nice = function(interval, skip) {
      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
      if (method) interval = method[0], skip = method[1];
      function skipped(date) {
        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
      }
      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
        floor: function(date) {
          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
          return date;
        },
        ceil: function(date) {
          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
          return date;
        }
      } : interval));
    };
    scale.ticks = function(interval, skip) {
      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
        range: interval
      }, skip ];
      if (method) interval = method[0], skip = method[1];
      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
    return d.getMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getMinutes();
  } ], [ "%I %p", function(d) {
    return d.getHours();
  } ], [ "%a %d", function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getDate() != 1;
  } ], [ "%B", function(d) {
    return d.getMonth();
  } ], [ "%Y", d3_true ] ]);
  var d3_time_scaleMilliseconds = {
    range: function(start, stop, step) {
      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
    },
    floor: d3_identity,
    ceil: d3_identity
  };
  d3_time_scaleLocalMethods.year = d3_time.year;
  d3_time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
    return d.getUTCMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getUTCSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getUTCMinutes();
  } ], [ "%I %p", function(d) {
    return d.getUTCHours();
  } ], [ "%a %d", function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getUTCDate() != 1;
  } ], [ "%B", function(d) {
    return d.getUTCMonth();
  } ], [ "%Y", d3_true ] ]);
  d3_time_scaleUtcMethods.year = d3_time.year.utc;
  d3_time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
  };
  d3.text = d3_xhrType(function(request) {
    return request.responseText;
  });
  d3.json = function(url, callback) {
    return d3_xhr(url, "application/json", d3_json, callback);
  };
  function d3_json(request) {
    return JSON.parse(request.responseText);
  }
  d3.html = function(url, callback) {
    return d3_xhr(url, "text/html", d3_html, callback);
  };
  function d3_html(request) {
    var range = d3_document.createRange();
    range.selectNode(d3_document.body);
    return range.createContextualFragment(request.responseText);
  }
  d3.xml = d3_xhrType(function(request) {
    return request.responseXML;
  });
  if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
}();
},{}],87:[function(require,module,exports){
(function (Buffer){

/**
 * Module exports.
 */

module.exports = dataUriToBuffer;

/**
 * Returns a `Buffer` instance from the given data URI `uri`.
 *
 * @param {String} uri Data URI to turn into a Buffer instance
 * @return {Buffer} Buffer instance from Data URI
 * @api public
 */

function dataUriToBuffer (uri) {
  if (!/^data\:/i.test(uri)) {
    throw new TypeError('`uri` does not appear to be a Data URI (must begin with "data:")');
  }

  // strip newlines
  uri = uri.replace(/\r?\n/g, '');

  // split the URI up into the "metadata" and the "data" portions
  var firstComma = uri.indexOf(',');
  if (-1 === firstComma || firstComma <= 4) throw new TypeError('malformed data: URI');

  // remove the "data:" scheme and parse the metadata
  var meta = uri.substring(5, firstComma).split(';');

  var base64 = false;
  var charset = 'US-ASCII';
  for (var i = 0; i < meta.length; i++) {
    if ('base64' == meta[i]) {
      base64 = true;
    } else if (0 == meta[i].indexOf('charset=')) {
      charset = meta[i].substring(8);
    }
  }

  // get the encoded data portion and decode URI-encoded chars
  var data = unescape(uri.substring(firstComma + 1));

  var encoding = base64 ? 'base64' : 'ascii';
  var buffer = new Buffer(data, encoding);

  // set `.type` property to MIME type
  buffer.type = meta[0] || 'text/plain';

  // set the `.charset` property
  buffer.charset = charset;

  return buffer;
}

}).call(this,require("buffer").Buffer)
},{"buffer":46}],88:[function(require,module,exports){
"use strict"

var ch = require("incremental-convex-hull")
var uniq = require("uniq")

module.exports = triangulate

function LiftedPoint(p, i) {
  this.point = p
  this.index = i
}

function compareLifted(a, b) {
  var ap = a.point
  var bp = b.point
  var d = ap.length
  for(var i=0; i<d; ++i) {
    var s = bp[i] - ap[i]
    if(s) {
      return s
    }
  }
  return 0
}

function triangulate1D(n, points, includePointAtInfinity) {
  if(n === 1) {
    if(includePointAtInfinity) {
      return [ [-1, 0] ]
    } else {
      return []
    }
  }
  var lifted = points.map(function(p, i) {
    return [ p[0], i ]
  })
  lifted.sort(function(a,b) {
    return a[0] - b[0]
  })
  var cells = new Array(n - 1)
  for(var i=1; i<n; ++i) {
    var a = lifted[i-1]
    var b = lifted[i]
    cells[i-1] = [ a[1], b[1] ]
  }
  if(includePointAtInfinity) {
    cells.push(
      [ -1, cells[0][1], ],
      [ cells[n-1][1], -1 ])
  }
  return cells
}

function triangulate(points, includePointAtInfinity) {
  var n = points.length
  if(n === 0) {
    return []
  }
  
  var d = points[0].length
  if(d < 1) {
    return []
  }

  //Special case:  For 1D we can just sort the points
  if(d === 1) {
    return triangulate1D(n, points, includePointAtInfinity)
  }
  
  //Lift points, sort
  var lifted = new Array(n)
  var upper = 1.0
  for(var i=0; i<n; ++i) {
    var p = points[i]
    var x = new Array(d+1)
    var l = 0.0
    for(var j=0; j<d; ++j) {
      var v = p[j]
      x[j] = v
      l += v * v
    }
    x[d] = l
    lifted[i] = new LiftedPoint(x, i)
    upper = Math.max(l, upper)
  }
  uniq(lifted, compareLifted)
  
  //Double points
  n = lifted.length

  //Create new list of points
  var dpoints = new Array(n + d + 1)
  var dindex = new Array(n + d + 1)

  //Add steiner points at top
  var u = (d+1) * (d+1) * upper
  var y = new Array(d+1)
  for(var i=0; i<=d; ++i) {
    y[i] = 0.0
  }
  y[d] = u

  dpoints[0] = y.slice()
  dindex[0] = -1

  for(var i=0; i<=d; ++i) {
    var x = y.slice()
    x[i] = 1
    dpoints[i+1] = x
    dindex[i+1] = -1
  }

  //Copy rest of the points over
  for(var i=0; i<n; ++i) {
    var h = lifted[i]
    dpoints[i + d + 1] = h.point
    dindex[i + d + 1] =  h.index
  }

  //Construct convex hull
  var hull = ch(dpoints, false)
  if(includePointAtInfinity) {
    hull = hull.filter(function(cell) {
      var count = 0
      for(var j=0; j<=d; ++j) {
        var v = dindex[cell[j]]
        if(v < 0) {
          if(++count >= 2) {
            return false
          }
        }
        cell[j] = v
      }
      return true
    })
  } else {
    hull = hull.filter(function(cell) {
      for(var i=0; i<=d; ++i) {
        var v = dindex[cell[i]]
        if(v < 0) {
          return false
        }
        cell[i] = v
      }
      return true
    })
  }

  if(d & 1) {
    for(var i=0; i<hull.length; ++i) {
      var h = hull[i]
      var x = h[0]
      h[0] = h[1]
      h[1] = x
    }
  }

  return hull
}
},{"incremental-convex-hull":265,"uniq":994}],89:[function(require,module,exports){
(function (Buffer){
var hasTypedArrays = false
if(typeof Float64Array !== "undefined") {
  var DOUBLE_VIEW = new Float64Array(1)
    , UINT_VIEW   = new Uint32Array(DOUBLE_VIEW.buffer)
  DOUBLE_VIEW[0] = 1.0
  hasTypedArrays = true
  if(UINT_VIEW[1] === 0x3ff00000) {
    //Use little endian
    module.exports = function doubleBitsLE(n) {
      DOUBLE_VIEW[0] = n
      return [ UINT_VIEW[0], UINT_VIEW[1] ]
    }
    function toDoubleLE(lo, hi) {
      UINT_VIEW[0] = lo
      UINT_VIEW[1] = hi
      return DOUBLE_VIEW[0]
    }
    module.exports.pack = toDoubleLE
    function lowUintLE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[0]
    }
    module.exports.lo = lowUintLE
    function highUintLE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[1]
    }
    module.exports.hi = highUintLE
  } else if(UINT_VIEW[0] === 0x3ff00000) {
    //Use big endian
    module.exports = function doubleBitsBE(n) {
      DOUBLE_VIEW[0] = n
      return [ UINT_VIEW[1], UINT_VIEW[0] ]
    }
    function toDoubleBE(lo, hi) {
      UINT_VIEW[1] = lo
      UINT_VIEW[0] = hi
      return DOUBLE_VIEW[0]
    }
    module.exports.pack = toDoubleBE
    function lowUintBE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[1]
    }
    module.exports.lo = lowUintBE
    function highUintBE(n) {
      DOUBLE_VIEW[0] = n
      return UINT_VIEW[0]
    }
    module.exports.hi = highUintBE
  } else {
    hasTypedArrays = false
  }
}
if(!hasTypedArrays) {
  var buffer = new Buffer(8)
  module.exports = function doubleBits(n) {
    buffer.writeDoubleLE(n, 0, true)
    return [ buffer.readUInt32LE(0, true), buffer.readUInt32LE(4, true) ]
  }
  function toDouble(lo, hi) {
    buffer.writeUInt32LE(lo, 0, true)
    buffer.writeUInt32LE(hi, 4, true)
    return buffer.readDoubleLE(0, true)
  }
  module.exports.pack = toDouble  
  function lowUint(n) {
    buffer.writeDoubleLE(n, 0, true)
    return buffer.readUInt32LE(0, true)
  }
  module.exports.lo = lowUint
  function highUint(n) {
    buffer.writeDoubleLE(n, 0, true)
    return buffer.readUInt32LE(4, true)
  }
  module.exports.hi = highUint
}

module.exports.sign = function(n) {
  return module.exports.hi(n) >>> 31
}

module.exports.exponent = function(n) {
  var b = module.exports.hi(n)
  return ((b<<1) >>> 21) - 1023
}

module.exports.fraction = function(n) {
  var lo = module.exports.lo(n)
  var hi = module.exports.hi(n)
  var b = hi & ((1<<20) - 1)
  if(hi & 0x7ff00000) {
    b += (1<<20)
  }
  return [lo, b]
}

module.exports.denormalized = function(n) {
  var hi = module.exports.hi(n)
  return !(hi & 0x7ff00000)
}
}).call(this,require("buffer").Buffer)
},{"buffer":46}],90:[function(require,module,exports){
"use strict"

function dupe_array(count, value, i) {
  var c = count[i]|0
  if(c <= 0) {
    return []
  }
  var result = new Array(c), j
  if(i === count.length-1) {
    for(j=0; j<c; ++j) {
      result[j] = value
    }
  } else {
    for(j=0; j<c; ++j) {
      result[j] = dupe_array(count, value, i+1)
    }
  }
  return result
}

function dupe_number(count, value) {
  var result, i
  result = new Array(count)
  for(i=0; i<count; ++i) {
    result[i] = value
  }
  return result
}

function dupe(count, value) {
  if(typeof value === "undefined") {
    value = 0
  }
  switch(typeof count) {
    case "number":
      if(count > 0) {
        return dupe_number(count|0, value)
      }
    break
    case "object":
      if(typeof (count.length) === "number") {
        return dupe_array(count, value, 0)
      }
    break
  }
  return []
}

module.exports = dupe
},{}],91:[function(require,module,exports){
'use strict';

module.exports = earcut;

function earcut(data, holeIndices, dim) {

    dim = dim || 2;

    var hasHoles = holeIndices && holeIndices.length,
        outerLen = hasHoles ? holeIndices[0] * dim : data.length,
        outerNode = linkedList(data, 0, outerLen, dim, true),
        triangles = [];

    if (!outerNode) return triangles;

    var minX, minY, maxX, maxY, x, y, size;

    if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim);

    // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
    if (data.length > 80 * dim) {
        minX = maxX = data[0];
        minY = maxY = data[1];

        for (var i = dim; i < outerLen; i += dim) {
            x = data[i];
            y = data[i + 1];
            if (x < minX) minX = x;
            if (y < minY) minY = y;
            if (x > maxX) maxX = x;
            if (y > maxY) maxY = y;
        }

        // minX, minY and size are later used to transform coords into integers for z-order calculation
        size = Math.max(maxX - minX, maxY - minY);
    }

    earcutLinked(outerNode, triangles, dim, minX, minY, size);

    return triangles;
}

// create a circular doubly linked list from polygon points in the specified winding order
function linkedList(data, start, end, dim, clockwise) {
    var i, last;

    if (clockwise === (signedArea(data, start, end, dim) > 0)) {
        for (i = start; i < end; i += dim) last = insertNode(i, data[i], data[i + 1], last);
    } else {
        for (i = end - dim; i >= start; i -= dim) last = insertNode(i, data[i], data[i + 1], last);
    }

    if (last && equals(last, last.next)) {
        removeNode(last);
        last = last.next;
    }

    return last;
}

// eliminate colinear or duplicate points
function filterPoints(start, end) {
    if (!start) return start;
    if (!end) end = start;

    var p = start,
        again;
    do {
        again = false;

        if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {
            removeNode(p);
            p = end = p.prev;
            if (p === p.next) return null;
            again = true;

        } else {
            p = p.next;
        }
    } while (again || p !== end);

    return end;
}

// main ear slicing loop which triangulates a polygon (given as a linked list)
function earcutLinked(ear, triangles, dim, minX, minY, size, pass) {
    if (!ear) return;

    // interlink polygon nodes in z-order
    if (!pass && size) indexCurve(ear, minX, minY, size);

    var stop = ear,
        prev, next;

    // iterate through ears, slicing them one by one
    while (ear.prev !== ear.next) {
        prev = ear.prev;
        next = ear.next;

        if (size ? isEarHashed(ear, minX, minY, size) : isEar(ear)) {
            // cut off the triangle
            triangles.push(prev.i / dim);
            triangles.push(ear.i / dim);
            triangles.push(next.i / dim);

            removeNode(ear);

            // skipping the next vertice leads to less sliver triangles
            ear = next.next;
            stop = next.next;

            continue;
        }

        ear = next;

        // if we looped through the whole remaining polygon and can't find any more ears
        if (ear === stop) {
            // try filtering points and slicing again
            if (!pass) {
                earcutLinked(filterPoints(ear), triangles, dim, minX, minY, size, 1);

            // if this didn't work, try curing all small self-intersections locally
            } else if (pass === 1) {
                ear = cureLocalIntersections(ear, triangles, dim);
                earcutLinked(ear, triangles, dim, minX, minY, size, 2);

            // as a last resort, try splitting the remaining polygon into two
            } else if (pass === 2) {
                splitEarcut(ear, triangles, dim, minX, minY, size);
            }

            break;
        }
    }
}

// check whether a polygon node forms a valid ear with adjacent nodes
function isEar(ear) {
    var a = ear.prev,
        b = ear,
        c = ear.next;

    if (area(a, b, c) >= 0) return false; // reflex, can't be an ear

    // now make sure we don't have other points inside the potential ear
    var p = ear.next.next;

    while (p !== ear.prev) {
        if (pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) &&
            area(p.prev, p, p.next) >= 0) return false;
        p = p.next;
    }

    return true;
}

function isEarHashed(ear, minX, minY, size) {
    var a = ear.prev,
        b = ear,
        c = ear.next;

    if (area(a, b, c) >= 0) return false; // reflex, can't be an ear

    // triangle bbox; min & max are calculated like this for speed
    var minTX = a.x < b.x ? (a.x < c.x ? a.x : c.x) : (b.x < c.x ? b.x : c.x),
        minTY = a.y < b.y ? (a.y < c.y ? a.y : c.y) : (b.y < c.y ? b.y : c.y),
        maxTX = a.x > b.x ? (a.x > c.x ? a.x : c.x) : (b.x > c.x ? b.x : c.x),
        maxTY = a.y > b.y ? (a.y > c.y ? a.y : c.y) : (b.y > c.y ? b.y : c.y);

    // z-order range for the current triangle bbox;
    var minZ = zOrder(minTX, minTY, minX, minY, size),
        maxZ = zOrder(maxTX, maxTY, minX, minY, size);

    // first look for points inside the triangle in increasing z-order
    var p = ear.nextZ;

    while (p && p.z <= maxZ) {
        if (p !== ear.prev && p !== ear.next &&
            pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) &&
            area(p.prev, p, p.next) >= 0) return false;
        p = p.nextZ;
    }

    // then look for points in decreasing z-order
    p = ear.prevZ;

    while (p && p.z >= minZ) {
        if (p !== ear.prev && p !== ear.next &&
            pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) &&
            area(p.prev, p, p.next) >= 0) return false;
        p = p.prevZ;
    }

    return true;
}

// go through all polygon nodes and cure small local self-intersections
function cureLocalIntersections(start, triangles, dim) {
    var p = start;
    do {
        var a = p.prev,
            b = p.next.next;

        if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {

            triangles.push(a.i / dim);
            triangles.push(p.i / dim);
            triangles.push(b.i / dim);

            // remove two nodes involved
            removeNode(p);
            removeNode(p.next);

            p = start = b;
        }
        p = p.next;
    } while (p !== start);

    return p;
}

// try splitting polygon into two and triangulate them independently
function splitEarcut(start, triangles, dim, minX, minY, size) {
    // look for a valid diagonal that divides the polygon into two
    var a = start;
    do {
        var b = a.next.next;
        while (b !== a.prev) {
            if (a.i !== b.i && isValidDiagonal(a, b)) {
                // split the polygon in two by the diagonal
                var c = splitPolygon(a, b);

                // filter colinear points around the cuts
                a = filterPoints(a, a.next);
                c = filterPoints(c, c.next);

                // run earcut on each half
                earcutLinked(a, triangles, dim, minX, minY, size);
                earcutLinked(c, triangles, dim, minX, minY, size);
                return;
            }
            b = b.next;
        }
        a = a.next;
    } while (a !== start);
}

// link every hole into the outer loop, producing a single-ring polygon without holes
function eliminateHoles(data, holeIndices, outerNode, dim) {
    var queue = [],
        i, len, start, end, list;

    for (i = 0, len = holeIndices.length; i < len; i++) {
        start = holeIndices[i] * dim;
        end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;
        list = linkedList(data, start, end, dim, false);
        if (list === list.next) list.steiner = true;
        queue.push(getLeftmost(list));
    }

    queue.sort(compareX);

    // process holes from left to right
    for (i = 0; i < queue.length; i++) {
        eliminateHole(queue[i], outerNode);
        outerNode = filterPoints(outerNode, outerNode.next);
    }

    return outerNode;
}

function compareX(a, b) {
    return a.x - b.x;
}

// find a bridge between vertices that connects hole with an outer ring and and link it
function eliminateHole(hole, outerNode) {
    outerNode = findHoleBridge(hole, outerNode);
    if (outerNode) {
        var b = splitPolygon(outerNode, hole);
        filterPoints(b, b.next);
    }
}

// David Eberly's algorithm for finding a bridge between hole and outer polygon
function findHoleBridge(hole, outerNode) {
    var p = outerNode,
        hx = hole.x,
        hy = hole.y,
        qx = -Infinity,
        m;

    // find a segment intersected by a ray from the hole's leftmost point to the left;
    // segment's endpoint with lesser x will be potential connection point
    do {
        if (hy <= p.y && hy >= p.next.y) {
            var x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);
            if (x <= hx && x > qx) {
                qx = x;
                if (x === hx) {
                    if (hy === p.y) return p;
                    if (hy === p.next.y) return p.next;
                }
                m = p.x < p.next.x ? p : p.next;
            }
        }
        p = p.next;
    } while (p !== outerNode);

    if (!m) return null;

    if (hx === qx) return m.prev; // hole touches outer segment; pick lower endpoint

    // look for points inside the triangle of hole point, segment intersection and endpoint;
    // if there are no points found, we have a valid connection;
    // otherwise choose the point of the minimum angle with the ray as connection point

    var stop = m,
        mx = m.x,
        my = m.y,
        tanMin = Infinity,
        tan;

    p = m.next;

    while (p !== stop) {
        if (hx >= p.x && p.x >= mx &&
                pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {

            tan = Math.abs(hy - p.y) / (hx - p.x); // tangential

            if ((tan < tanMin || (tan === tanMin && p.x > m.x)) && locallyInside(p, hole)) {
                m = p;
                tanMin = tan;
            }
        }

        p = p.next;
    }

    return m;
}

// interlink polygon nodes in z-order
function indexCurve(start, minX, minY, size) {
    var p = start;
    do {
        if (p.z === null) p.z = zOrder(p.x, p.y, minX, minY, size);
        p.prevZ = p.prev;
        p.nextZ = p.next;
        p = p.next;
    } while (p !== start);

    p.prevZ.nextZ = null;
    p.prevZ = null;

    sortLinked(p);
}

// Simon Tatham's linked list merge sort algorithm
// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
function sortLinked(list) {
    var i, p, q, e, tail, numMerges, pSize, qSize,
        inSize = 1;

    do {
        p = list;
        list = null;
        tail = null;
        numMerges = 0;

        while (p) {
            numMerges++;
            q = p;
            pSize = 0;
            for (i = 0; i < inSize; i++) {
                pSize++;
                q = q.nextZ;
                if (!q) break;
            }

            qSize = inSize;

            while (pSize > 0 || (qSize > 0 && q)) {

                if (pSize === 0) {
                    e = q;
                    q = q.nextZ;
                    qSize--;
                } else if (qSize === 0 || !q) {
                    e = p;
                    p = p.nextZ;
                    pSize--;
                } else if (p.z <= q.z) {
                    e = p;
                    p = p.nextZ;
                    pSize--;
                } else {
                    e = q;
                    q = q.nextZ;
                    qSize--;
                }

                if (tail) tail.nextZ = e;
                else list = e;

                e.prevZ = tail;
                tail = e;
            }

            p = q;
        }

        tail.nextZ = null;
        inSize *= 2;

    } while (numMerges > 1);

    return list;
}

// z-order of a point given coords and size of the data bounding box
function zOrder(x, y, minX, minY, size) {
    // coords are transformed into non-negative 15-bit integer range
    x = 32767 * (x - minX) / size;
    y = 32767 * (y - minY) / size;

    x = (x | (x << 8)) & 0x00FF00FF;
    x = (x | (x << 4)) & 0x0F0F0F0F;
    x = (x | (x << 2)) & 0x33333333;
    x = (x | (x << 1)) & 0x55555555;

    y = (y | (y << 8)) & 0x00FF00FF;
    y = (y | (y << 4)) & 0x0F0F0F0F;
    y = (y | (y << 2)) & 0x33333333;
    y = (y | (y << 1)) & 0x55555555;

    return x | (y << 1);
}

// find the leftmost node of a polygon ring
function getLeftmost(start) {
    var p = start,
        leftmost = start;
    do {
        if (p.x < leftmost.x) leftmost = p;
        p = p.next;
    } while (p !== start);

    return leftmost;
}

// check if a point lies within a convex triangle
function pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {
    return (cx - px) * (ay - py) - (ax - px) * (cy - py) >= 0 &&
           (ax - px) * (by - py) - (bx - px) * (ay - py) >= 0 &&
           (bx - px) * (cy - py) - (cx - px) * (by - py) >= 0;
}

// check if a diagonal between two polygon nodes is valid (lies in polygon interior)
function isValidDiagonal(a, b) {
    return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) &&
           locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b);
}

// signed area of a triangle
function area(p, q, r) {
    return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);
}

// check if two points are equal
function equals(p1, p2) {
    return p1.x === p2.x && p1.y === p2.y;
}

// check if two segments intersect
function intersects(p1, q1, p2, q2) {
    if ((equals(p1, q1) && equals(p2, q2)) ||
        (equals(p1, q2) && equals(p2, q1))) return true;
    return area(p1, q1, p2) > 0 !== area(p1, q1, q2) > 0 &&
           area(p2, q2, p1) > 0 !== area(p2, q2, q1) > 0;
}

// check if a polygon diagonal intersects any polygon segments
function intersectsPolygon(a, b) {
    var p = a;
    do {
        if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
                intersects(p, p.next, a, b)) return true;
        p = p.next;
    } while (p !== a);

    return false;
}

// check if a polygon diagonal is locally inside the polygon
function locallyInside(a, b) {
    return area(a.prev, a, a.next) < 0 ?
        area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 :
        area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;
}

// check if the middle point of a polygon diagonal is inside the polygon
function middleInside(a, b) {
    var p = a,
        inside = false,
        px = (a.x + b.x) / 2,
        py = (a.y + b.y) / 2;
    do {
        if (((p.y > py) !== (p.next.y > py)) && (px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x))
            inside = !inside;
        p = p.next;
    } while (p !== a);

    return inside;
}

// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
// if one belongs to the outer ring and another to a hole, it merges it into a single ring
function splitPolygon(a, b) {
    var a2 = new Node(a.i, a.x, a.y),
        b2 = new Node(b.i, b.x, b.y),
        an = a.next,
        bp = b.prev;

    a.next = b;
    b.prev = a;

    a2.next = an;
    an.prev = a2;

    b2.next = a2;
    a2.prev = b2;

    bp.next = b2;
    b2.prev = bp;

    return b2;
}

// create a node and optionally link it with previous one (in a circular doubly linked list)
function insertNode(i, x, y, last) {
    var p = new Node(i, x, y);

    if (!last) {
        p.prev = p;
        p.next = p;

    } else {
        p.next = last.next;
        p.prev = last;
        last.next.prev = p;
        last.next = p;
    }
    return p;
}

function removeNode(p) {
    p.next.prev = p.prev;
    p.prev.next = p.next;

    if (p.prevZ) p.prevZ.nextZ = p.nextZ;
    if (p.nextZ) p.nextZ.prevZ = p.prevZ;
}

function Node(i, x, y) {
    // vertice index in coordinates array
    this.i = i;

    // vertex coordinates
    this.x = x;
    this.y = y;

    // previous and next vertice nodes in a polygon ring
    this.prev = null;
    this.next = null;

    // z-order curve value
    this.z = null;

    // previous and next nodes in z-order
    this.prevZ = null;
    this.nextZ = null;

    // indicates whether this is a steiner point
    this.steiner = false;
}

// return a percentage difference between the polygon area and its triangulation area;
// used to verify correctness of triangulation
earcut.deviation = function (data, holeIndices, dim, triangles) {
    var hasHoles = holeIndices && holeIndices.length;
    var outerLen = hasHoles ? holeIndices[0] * dim : data.length;

    var polygonArea = Math.abs(signedArea(data, 0, outerLen, dim));
    if (hasHoles) {
        for (var i = 0, len = holeIndices.length; i < len; i++) {
            var start = holeIndices[i] * dim;
            var end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;
            polygonArea -= Math.abs(signedArea(data, start, end, dim));
        }
    }

    var trianglesArea = 0;
    for (i = 0; i < triangles.length; i += 3) {
        var a = triangles[i] * dim;
        var b = triangles[i + 1] * dim;
        var c = triangles[i + 2] * dim;
        trianglesArea += Math.abs(
            (data[a] - data[c]) * (data[b + 1] - data[a + 1]) -
            (data[a] - data[b]) * (data[c + 1] - data[a + 1]));
    }

    return polygonArea === 0 && trianglesArea === 0 ? 0 :
        Math.abs((trianglesArea - polygonArea) / polygonArea);
};

function signedArea(data, start, end, dim) {
    var sum = 0;
    for (var i = start, j = end - dim; i < end; i += dim) {
        sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);
        j = i;
    }
    return sum;
}

// turn a polygon in a multi-dimensional array form (e.g. as in GeoJSON) into a form Earcut accepts
earcut.flatten = function (data) {
    var dim = data[0][0].length,
        result = {vertices: [], holes: [], dimensions: dim},
        holeIndex = 0;

    for (var i = 0; i < data.length; i++) {
        for (var j = 0; j < data[i].length; j++) {
            for (var d = 0; d < dim; d++) result.vertices.push(data[i][j][d]);
        }
        if (i > 0) {
            holeIndex += data[i - 1].length;
            result.holes.push(holeIndex);
        }
    }
    return result;
};

},{}],92:[function(require,module,exports){
"use strict"

module.exports = edgeToAdjacency

var uniq = require("uniq")

function edgeToAdjacency(edges, numVertices) {
  var numEdges = edges.length
  if(typeof numVertices !== "number") {
    numVertices = 0
    for(var i=0; i<numEdges; ++i) {
      var e = edges[i]
      numVertices = Math.max(numVertices, e[0], e[1])
    }
    numVertices = (numVertices|0) + 1
  }
  numVertices = numVertices|0
  var adj = new Array(numVertices)
  for(var i=0; i<numVertices; ++i) {
    adj[i] = []
  }
  for(var i=0; i<numEdges; ++i) {
    var e = edges[i]
    adj[e[0]].push(e[1])
    adj[e[1]].push(e[0])
  }
  for(var j=0; j<numVertices; ++j) {
    uniq(adj[j], function(a, b) {
      return a - b
    })
  }
  return adj
}
},{"uniq":994}],93:[function(require,module,exports){
// This file can be required in Browserify and Node.js for automatic polyfill
// To use it:  require('es6-promise/auto');
'use strict';
module.exports = require('./').polyfill();

},{"./":94}],94:[function(require,module,exports){
(function (process,global){
/*!
 * @overview es6-promise - a tiny implementation of Promises/A+.
 * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
 * @license   Licensed under MIT license
 *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
 * @version   4.0.5
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (global.ES6Promise = factory());
}(this, (function () { 'use strict';

function objectOrFunction(x) {
  return typeof x === 'function' || typeof x === 'object' && x !== null;
}

function isFunction(x) {
  return typeof x === 'function';
}

var _isArray = undefined;
if (!Array.isArray) {
  _isArray = function (x) {
    return Object.prototype.toString.call(x) === '[object Array]';
  };
} else {
  _isArray = Array.isArray;
}

var isArray = _isArray;

var len = 0;
var vertxNext = undefined;
var customSchedulerFn = undefined;

var asap = function asap(callback, arg) {
  queue[len] = callback;
  queue[len + 1] = arg;
  len += 2;
  if (len === 2) {
    // If len is 2, that means that we need to schedule an async flush.
    // If additional callbacks are queued before the queue is flushed, they
    // will be processed by this flush that we are scheduling.
    if (customSchedulerFn) {
      customSchedulerFn(flush);
    } else {
      scheduleFlush();
    }
  }
};

function setScheduler(scheduleFn) {
  customSchedulerFn = scheduleFn;
}

function setAsap(asapFn) {
  asap = asapFn;
}

var browserWindow = typeof window !== 'undefined' ? window : undefined;
var browserGlobal = browserWindow || {};
var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';

// test for web worker but not in IE10
var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';

// node
function useNextTick() {
  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
  // see https://github.com/cujojs/when/issues/410 for details
  return function () {
    return process.nextTick(flush);
  };
}

// vertx
function useVertxTimer() {
  if (typeof vertxNext !== 'undefined') {
    return function () {
      vertxNext(flush);
    };
  }

  return useSetTimeout();
}

function useMutationObserver() {
  var iterations = 0;
  var observer = new BrowserMutationObserver(flush);
  var node = document.createTextNode('');
  observer.observe(node, { characterData: true });

  return function () {
    node.data = iterations = ++iterations % 2;
  };
}

// web worker
function useMessageChannel() {
  var channel = new MessageChannel();
  channel.port1.onmessage = flush;
  return function () {
    return channel.port2.postMessage(0);
  };
}

function useSetTimeout() {
  // Store setTimeout reference so es6-promise will be unaffected by
  // other code modifying setTimeout (like sinon.useFakeTimers())
  var globalSetTimeout = setTimeout;
  return function () {
    return globalSetTimeout(flush, 1);
  };
}

var queue = new Array(1000);
function flush() {
  for (var i = 0; i < len; i += 2) {
    var callback = queue[i];
    var arg = queue[i + 1];

    callback(arg);

    queue[i] = undefined;
    queue[i + 1] = undefined;
  }

  len = 0;
}

function attemptVertx() {
  try {
    var r = require;
    var vertx = r('vertx');
    vertxNext = vertx.runOnLoop || vertx.runOnContext;
    return useVertxTimer();
  } catch (e) {
    return useSetTimeout();
  }
}

var scheduleFlush = undefined;
// Decide what async method to use to triggering processing of queued callbacks:
if (isNode) {
  scheduleFlush = useNextTick();
} else if (BrowserMutationObserver) {
  scheduleFlush = useMutationObserver();
} else if (isWorker) {
  scheduleFlush = useMessageChannel();
} else if (browserWindow === undefined && typeof require === 'function') {
  scheduleFlush = attemptVertx();
} else {
  scheduleFlush = useSetTimeout();
}

function then(onFulfillment, onRejection) {
  var _arguments = arguments;

  var parent = this;

  var child = new this.constructor(noop);

  if (child[PROMISE_ID] === undefined) {
    makePromise(child);
  }

  var _state = parent._state;

  if (_state) {
    (function () {
      var callback = _arguments[_state - 1];
      asap(function () {
        return invokeCallback(_state, child, callback, parent._result);
      });
    })();
  } else {
    subscribe(parent, child, onFulfillment, onRejection);
  }

  return child;
}

/**
  `Promise.resolve` returns a promise that will become resolved with the
  passed `value`. It is shorthand for the following:

  ```javascript
  let promise = new Promise(function(resolve, reject){
    resolve(1);
  });

  promise.then(function(value){
    // value === 1
  });
  ```

  Instead of writing the above, your code now simply becomes the following:

  ```javascript
  let promise = Promise.resolve(1);

  promise.then(function(value){
    // value === 1
  });
  ```

  @method resolve
  @static
  @param {Any} value value that the returned promise will be resolved with
  Useful for tooling.
  @return {Promise} a promise that will become fulfilled with the given
  `value`
*/
function resolve(object) {
  /*jshint validthis:true */
  var Constructor = this;

  if (object && typeof object === 'object' && object.constructor === Constructor) {
    return object;
  }

  var promise = new Constructor(noop);
  _resolve(promise, object);
  return promise;
}

var PROMISE_ID = Math.random().toString(36).substring(16);

function noop() {}

var PENDING = void 0;
var FULFILLED = 1;
var REJECTED = 2;

var GET_THEN_ERROR = new ErrorObject();

function selfFulfillment() {
  return new TypeError("You cannot resolve a promise with itself");
}

function cannotReturnOwn() {
  return new TypeError('A promises callback cannot return that same promise.');
}

function getThen(promise) {
  try {
    return promise.then;
  } catch (error) {
    GET_THEN_ERROR.error = error;
    return GET_THEN_ERROR;
  }
}

function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
  try {
    then.call(value, fulfillmentHandler, rejectionHandler);
  } catch (e) {
    return e;
  }
}

function handleForeignThenable(promise, thenable, then) {
  asap(function (promise) {
    var sealed = false;
    var error = tryThen(then, thenable, function (value) {
      if (sealed) {
        return;
      }
      sealed = true;
      if (thenable !== value) {
        _resolve(promise, value);
      } else {
        fulfill(promise, value);
      }
    }, function (reason) {
      if (sealed) {
        return;
      }
      sealed = true;

      _reject(promise, reason);
    }, 'Settle: ' + (promise._label || ' unknown promise'));

    if (!sealed && error) {
      sealed = true;
      _reject(promise, error);
    }
  }, promise);
}

function handleOwnThenable(promise, thenable) {
  if (thenable._state === FULFILLED) {
    fulfill(promise, thenable._result);
  } else if (thenable._state === REJECTED) {
    _reject(promise, thenable._result);
  } else {
    subscribe(thenable, undefined, function (value) {
      return _resolve(promise, value);
    }, function (reason) {
      return _reject(promise, reason);
    });
  }
}

function handleMaybeThenable(promise, maybeThenable, then$$) {
  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
    handleOwnThenable(promise, maybeThenable);
  } else {
    if (then$$ === GET_THEN_ERROR) {
      _reject(promise, GET_THEN_ERROR.error);
    } else if (then$$ === undefined) {
      fulfill(promise, maybeThenable);
    } else if (isFunction(then$$)) {
      handleForeignThenable(promise, maybeThenable, then$$);
    } else {
      fulfill(promise, maybeThenable);
    }
  }
}

function _resolve(promise, value) {
  if (promise === value) {
    _reject(promise, selfFulfillment());
  } else if (objectOrFunction(value)) {
    handleMaybeThenable(promise, value, getThen(value));
  } else {
    fulfill(promise, value);
  }
}

function publishRejection(promise) {
  if (promise._onerror) {
    promise._onerror(promise._result);
  }

  publish(promise);
}

function fulfill(promise, value) {
  if (promise._state !== PENDING) {
    return;
  }

  promise._result = value;
  promise._state = FULFILLED;

  if (promise._subscribers.length !== 0) {
    asap(publish, promise);
  }
}

function _reject(promise, reason) {
  if (promise._state !== PENDING) {
    return;
  }
  promise._state = REJECTED;
  promise._result = reason;

  asap(publishRejection, promise);
}

function subscribe(parent, child, onFulfillment, onRejection) {
  var _subscribers = parent._subscribers;
  var length = _subscribers.length;

  parent._onerror = null;

  _subscribers[length] = child;
  _subscribers[length + FULFILLED] = onFulfillment;
  _subscribers[length + REJECTED] = onRejection;

  if (length === 0 && parent._state) {
    asap(publish, parent);
  }
}

function publish(promise) {
  var subscribers = promise._subscribers;
  var settled = promise._state;

  if (subscribers.length === 0) {
    return;
  }

  var child = undefined,
      callback = undefined,
      detail = promise._result;

  for (var i = 0; i < subscribers.length; i += 3) {
    child = subscribers[i];
    callback = subscribers[i + settled];

    if (child) {
      invokeCallback(settled, child, callback, detail);
    } else {
      callback(detail);
    }
  }

  promise._subscribers.length = 0;
}

function ErrorObject() {
  this.error = null;
}

var TRY_CATCH_ERROR = new ErrorObject();

function tryCatch(callback, detail) {
  try {
    return callback(detail);
  } catch (e) {
    TRY_CATCH_ERROR.error = e;
    return TRY_CATCH_ERROR;
  }
}

function invokeCallback(settled, promise, callback, detail) {
  var hasCallback = isFunction(callback),
      value = undefined,
      error = undefined,
      succeeded = undefined,
      failed = undefined;

  if (hasCallback) {
    value = tryCatch(callback, detail);

    if (value === TRY_CATCH_ERROR) {
      failed = true;
      error = value.error;
      value = null;
    } else {
      succeeded = true;
    }

    if (promise === value) {
      _reject(promise, cannotReturnOwn());
      return;
    }
  } else {
    value = detail;
    succeeded = true;
  }

  if (promise._state !== PENDING) {
    // noop
  } else if (hasCallback && succeeded) {
      _resolve(promise, value);
    } else if (failed) {
      _reject(promise, error);
    } else if (settled === FULFILLED) {
      fulfill(promise, value);
    } else if (settled === REJECTED) {
      _reject(promise, value);
    }
}

function initializePromise(promise, resolver) {
  try {
    resolver(function resolvePromise(value) {
      _resolve(promise, value);
    }, function rejectPromise(reason) {
      _reject(promise, reason);
    });
  } catch (e) {
    _reject(promise, e);
  }
}

var id = 0;
function nextId() {
  return id++;
}

function makePromise(promise) {
  promise[PROMISE_ID] = id++;
  promise._state = undefined;
  promise._result = undefined;
  promise._subscribers = [];
}

function Enumerator(Constructor, input) {
  this._instanceConstructor = Constructor;
  this.promise = new Constructor(noop);

  if (!this.promise[PROMISE_ID]) {
    makePromise(this.promise);
  }

  if (isArray(input)) {
    this._input = input;
    this.length = input.length;
    this._remaining = input.length;

    this._result = new Array(this.length);

    if (this.length === 0) {
      fulfill(this.promise, this._result);
    } else {
      this.length = this.length || 0;
      this._enumerate();
      if (this._remaining === 0) {
        fulfill(this.promise, this._result);
      }
    }
  } else {
    _reject(this.promise, validationError());
  }
}

function validationError() {
  return new Error('Array Methods must be provided an Array');
};

Enumerator.prototype._enumerate = function () {
  var length = this.length;
  var _input = this._input;

  for (var i = 0; this._state === PENDING && i < length; i++) {
    this._eachEntry(_input[i], i);
  }
};

Enumerator.prototype._eachEntry = function (entry, i) {
  var c = this._instanceConstructor;
  var resolve$$ = c.resolve;

  if (resolve$$ === resolve) {
    var _then = getThen(entry);

    if (_then === then && entry._state !== PENDING) {
      this._settledAt(entry._state, i, entry._result);
    } else if (typeof _then !== 'function') {
      this._remaining--;
      this._result[i] = entry;
    } else if (c === Promise) {
      var promise = new c(noop);
      handleMaybeThenable(promise, entry, _then);
      this._willSettleAt(promise, i);
    } else {
      this._willSettleAt(new c(function (resolve$$) {
        return resolve$$(entry);
      }), i);
    }
  } else {
    this._willSettleAt(resolve$$(entry), i);
  }
};

Enumerator.prototype._settledAt = function (state, i, value) {
  var promise = this.promise;

  if (promise._state === PENDING) {
    this._remaining--;

    if (state === REJECTED) {
      _reject(promise, value);
    } else {
      this._result[i] = value;
    }
  }

  if (this._remaining === 0) {
    fulfill(promise, this._result);
  }
};

Enumerator.prototype._willSettleAt = function (promise, i) {
  var enumerator = this;

  subscribe(promise, undefined, function (value) {
    return enumerator._settledAt(FULFILLED, i, value);
  }, function (reason) {
    return enumerator._settledAt(REJECTED, i, reason);
  });
};

/**
  `Promise.all` accepts an array of promises, and returns a new promise which
  is fulfilled with an array of fulfillment values for the passed promises, or
  rejected with the reason of the first passed promise to be rejected. It casts all
  elements of the passed iterable to promises as it runs this algorithm.

  Example:

  ```javascript
  let promise1 = resolve(1);
  let promise2 = resolve(2);
  let promise3 = resolve(3);
  let promises = [ promise1, promise2, promise3 ];

  Promise.all(promises).then(function(array){
    // The array here would be [ 1, 2, 3 ];
  });
  ```

  If any of the `promises` given to `all` are rejected, the first promise
  that is rejected will be given as an argument to the returned promises's
  rejection handler. For example:

  Example:

  ```javascript
  let promise1 = resolve(1);
  let promise2 = reject(new Error("2"));
  let promise3 = reject(new Error("3"));
  let promises = [ promise1, promise2, promise3 ];

  Promise.all(promises).then(function(array){
    // Code here never runs because there are rejected promises!
  }, function(error) {
    // error.message === "2"
  });
  ```

  @method all
  @static
  @param {Array} entries array of promises
  @param {String} label optional string for labeling the promise.
  Useful for tooling.
  @return {Promise} promise that is fulfilled when all `promises` have been
  fulfilled, or rejected if any of them become rejected.
  @static
*/
function all(entries) {
  return new Enumerator(this, entries).promise;
}

/**
  `Promise.race` returns a new promise which is settled in the same way as the
  first passed promise to settle.

  Example:

  ```javascript
  let promise1 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 1');
    }, 200);
  });

  let promise2 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 2');
    }, 100);
  });

  Promise.race([promise1, promise2]).then(function(result){
    // result === 'promise 2' because it was resolved before promise1
    // was resolved.
  });
  ```

  `Promise.race` is deterministic in that only the state of the first
  settled promise matters. For example, even if other promises given to the
  `promises` array argument are resolved, but the first settled promise has
  become rejected before the other promises became fulfilled, the returned
  promise will become rejected:

  ```javascript
  let promise1 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 1');
    }, 200);
  });

  let promise2 = new Promise(function(resolve, reject){
    setTimeout(function(){
      reject(new Error('promise 2'));
    }, 100);
  });

  Promise.race([promise1, promise2]).then(function(result){
    // Code here never runs
  }, function(reason){
    // reason.message === 'promise 2' because promise 2 became rejected before
    // promise 1 became fulfilled
  });
  ```

  An example real-world use case is implementing timeouts:

  ```javascript
  Promise.race([ajax('foo.json'), timeout(5000)])
  ```

  @method race
  @static
  @param {Array} promises array of promises to observe
  Useful for tooling.
  @return {Promise} a promise which settles in the same way as the first passed
  promise to settle.
*/
function race(entries) {
  /*jshint validthis:true */
  var Constructor = this;

  if (!isArray(entries)) {
    return new Constructor(function (_, reject) {
      return reject(new TypeError('You must pass an array to race.'));
    });
  } else {
    return new Constructor(function (resolve, reject) {
      var length = entries.length;
      for (var i = 0; i < length; i++) {
        Constructor.resolve(entries[i]).then(resolve, reject);
      }
    });
  }
}

/**
  `Promise.reject` returns a promise rejected with the passed `reason`.
  It is shorthand for the following:

  ```javascript
  let promise = new Promise(function(resolve, reject){
    reject(new Error('WHOOPS'));
  });

  promise.then(function(value){
    // Code here doesn't run because the promise is rejected!
  }, function(reason){
    // reason.message === 'WHOOPS'
  });
  ```

  Instead of writing the above, your code now simply becomes the following:

  ```javascript
  let promise = Promise.reject(new Error('WHOOPS'));

  promise.then(function(value){
    // Code here doesn't run because the promise is rejected!
  }, function(reason){
    // reason.message === 'WHOOPS'
  });
  ```

  @method reject
  @static
  @param {Any} reason value that the returned promise will be rejected with.
  Useful for tooling.
  @return {Promise} a promise rejected with the given `reason`.
*/
function reject(reason) {
  /*jshint validthis:true */
  var Constructor = this;
  var promise = new Constructor(noop);
  _reject(promise, reason);
  return promise;
}

function needsResolver() {
  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
}

function needsNew() {
  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
}

/**
  Promise objects represent the eventual result of an asynchronous operation. The
  primary way of interacting with a promise is through its `then` method, which
  registers callbacks to receive either a promise's eventual value or the reason
  why the promise cannot be fulfilled.

  Terminology
  -----------

  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
  - `thenable` is an object or function that defines a `then` method.
  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
  - `exception` is a value that is thrown using the throw statement.
  - `reason` is a value that indicates why a promise was rejected.
  - `settled` the final resting state of a promise, fulfilled or rejected.

  A promise can be in one of three states: pending, fulfilled, or rejected.

  Promises that are fulfilled have a fulfillment value and are in the fulfilled
  state.  Promises that are rejected have a rejection reason and are in the
  rejected state.  A fulfillment value is never a thenable.

  Promises can also be said to *resolve* a value.  If this value is also a
  promise, then the original promise's settled state will match the value's
  settled state.  So a promise that *resolves* a promise that rejects will
  itself reject, and a promise that *resolves* a promise that fulfills will
  itself fulfill.


  Basic Usage:
  ------------

  ```js
  let promise = new Promise(function(resolve, reject) {
    // on success
    resolve(value);

    // on failure
    reject(reason);
  });

  promise.then(function(value) {
    // on fulfillment
  }, function(reason) {
    // on rejection
  });
  ```

  Advanced Usage:
  ---------------

  Promises shine when abstracting away asynchronous interactions such as
  `XMLHttpRequest`s.

  ```js
  function getJSON(url) {
    return new Promise(function(resolve, reject){
      let xhr = new XMLHttpRequest();

      xhr.open('GET', url);
      xhr.onreadystatechange = handler;
      xhr.responseType = 'json';
      xhr.setRequestHeader('Accept', 'application/json');
      xhr.send();

      function handler() {
        if (this.readyState === this.DONE) {
          if (this.status === 200) {
            resolve(this.response);
          } else {
            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
          }
        }
      };
    });
  }

  getJSON('/posts.json').then(function(json) {
    // on fulfillment
  }, function(reason) {
    // on rejection
  });
  ```

  Unlike callbacks, promises are great composable primitives.

  ```js
  Promise.all([
    getJSON('/posts'),
    getJSON('/comments')
  ]).then(function(values){
    values[0] // => postsJSON
    values[1] // => commentsJSON

    return values;
  });
  ```

  @class Promise
  @param {function} resolver
  Useful for tooling.
  @constructor
*/
function Promise(resolver) {
  this[PROMISE_ID] = nextId();
  this._result = this._state = undefined;
  this._subscribers = [];

  if (noop !== resolver) {
    typeof resolver !== 'function' && needsResolver();
    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
  }
}

Promise.all = all;
Promise.race = race;
Promise.resolve = resolve;
Promise.reject = reject;
Promise._setScheduler = setScheduler;
Promise._setAsap = setAsap;
Promise._asap = asap;

Promise.prototype = {
  constructor: Promise,

  /**
    The primary way of interacting with a promise is through its `then` method,
    which registers callbacks to receive either a promise's eventual value or the
    reason why the promise cannot be fulfilled.
  
    ```js
    findUser().then(function(user){
      // user is available
    }, function(reason){
      // user is unavailable, and you are given the reason why
    });
    ```
  
    Chaining
    --------
  
    The return value of `then` is itself a promise.  This second, 'downstream'
    promise is resolved with the return value of the first promise's fulfillment
    or rejection handler, or rejected if the handler throws an exception.
  
    ```js
    findUser().then(function (user) {
      return user.name;
    }, function (reason) {
      return 'default name';
    }).then(function (userName) {
      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
      // will be `'default name'`
    });
  
    findUser().then(function (user) {
      throw new Error('Found user, but still unhappy');
    }, function (reason) {
      throw new Error('`findUser` rejected and we're unhappy');
    }).then(function (value) {
      // never reached
    }, function (reason) {
      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
    });
    ```
    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
  
    ```js
    findUser().then(function (user) {
      throw new PedagogicalException('Upstream error');
    }).then(function (value) {
      // never reached
    }).then(function (value) {
      // never reached
    }, function (reason) {
      // The `PedgagocialException` is propagated all the way down to here
    });
    ```
  
    Assimilation
    ------------
  
    Sometimes the value you want to propagate to a downstream promise can only be
    retrieved asynchronously. This can be achieved by returning a promise in the
    fulfillment or rejection handler. The downstream promise will then be pending
    until the returned promise is settled. This is called *assimilation*.
  
    ```js
    findUser().then(function (user) {
      return findCommentsByAuthor(user);
    }).then(function (comments) {
      // The user's comments are now available
    });
    ```
  
    If the assimliated promise rejects, then the downstream promise will also reject.
  
    ```js
    findUser().then(function (user) {
      return findCommentsByAuthor(user);
    }).then(function (comments) {
      // If `findCommentsByAuthor` fulfills, we'll have the value here
    }, function (reason) {
      // If `findCommentsByAuthor` rejects, we'll have the reason here
    });
    ```
  
    Simple Example
    --------------
  
    Synchronous Example
  
    ```javascript
    let result;
  
    try {
      result = findResult();
      // success
    } catch(reason) {
      // failure
    }
    ```
  
    Errback Example
  
    ```js
    findResult(function(result, err){
      if (err) {
        // failure
      } else {
        // success
      }
    });
    ```
  
    Promise Example;
  
    ```javascript
    findResult().then(function(result){
      // success
    }, function(reason){
      // failure
    });
    ```
  
    Advanced Example
    --------------
  
    Synchronous Example
  
    ```javascript
    let author, books;
  
    try {
      author = findAuthor();
      books  = findBooksByAuthor(author);
      // success
    } catch(reason) {
      // failure
    }
    ```
  
    Errback Example
  
    ```js
  
    function foundBooks(books) {
  
    }
  
    function failure(reason) {
  
    }
  
    findAuthor(function(author, err){
      if (err) {
        failure(err);
        // failure
      } else {
        try {
          findBoooksByAuthor(author, function(books, err) {
            if (err) {
              failure(err);
            } else {
              try {
                foundBooks(books);
              } catch(reason) {
                failure(reason);
              }
            }
          });
        } catch(error) {
          failure(err);
        }
        // success
      }
    });
    ```
  
    Promise Example;
  
    ```javascript
    findAuthor().
      then(findBooksByAuthor).
      then(function(books){
        // found books
    }).catch(function(reason){
      // something went wrong
    });
    ```
  
    @method then
    @param {Function} onFulfilled
    @param {Function} onRejected
    Useful for tooling.
    @return {Promise}
  */
  then: then,

  /**
    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
    as the catch block of a try/catch statement.
  
    ```js
    function findAuthor(){
      throw new Error('couldn't find that author');
    }
  
    // synchronous
    try {
      findAuthor();
    } catch(reason) {
      // something went wrong
    }
  
    // async with promises
    findAuthor().catch(function(reason){
      // something went wrong
    });
    ```
  
    @method catch
    @param {Function} onRejection
    Useful for tooling.
    @return {Promise}
  */
  'catch': function _catch(onRejection) {
    return this.then(null, onRejection);
  }
};

function polyfill() {
    var local = undefined;

    if (typeof global !== 'undefined') {
        local = global;
    } else if (typeof self !== 'undefined') {
        local = self;
    } else {
        try {
            local = Function('return this')();
        } catch (e) {
            throw new Error('polyfill failed because global object is unavailable in this environment');
        }
    }

    var P = local.Promise;

    if (P) {
        var promiseToString = null;
        try {
            promiseToString = Object.prototype.toString.call(P.resolve());
        } catch (e) {
            // silently ignored
        }

        if (promiseToString === '[object Promise]' && !P.cast) {
            return;
        }
    }

    local.Promise = Promise;
}

// Strange compat..
Promise.polyfill = polyfill;
Promise.Promise = Promise;

return Promise;

})));

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":923}],95:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      } else {
        // At least give some kind of context to the user
        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
        err.context = er;
        throw err;
      }
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        args = Array.prototype.slice.call(arguments, 1);
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    args = Array.prototype.slice.call(arguments, 1);
    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else if (listeners) {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.prototype.listenerCount = function(type) {
  if (this._events) {
    var evlistener = this._events[type];

    if (isFunction(evlistener))
      return 1;
    else if (evlistener)
      return evlistener.length;
  }
  return 0;
};

EventEmitter.listenerCount = function(emitter, type) {
  return emitter.listenerCount(type);
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],96:[function(require,module,exports){
"use strict"

module.exports = extractPlanes

function extractPlanes(M, zNear, zFar) {
  var z  = zNear || 0.0
  var zf = zFar || 1.0
  return [
    [ M[12] + M[0], M[13] + M[1], M[14] + M[2], M[15] + M[3] ],
    [ M[12] - M[0], M[13] - M[1], M[14] - M[2], M[15] - M[3] ],
    [ M[12] + M[4], M[13] + M[5], M[14] + M[6], M[15] + M[7] ],
    [ M[12] - M[4], M[13] - M[5], M[14] - M[6], M[15] - M[7] ],
    [ z*M[12] + M[8], z*M[13] + M[9], z*M[14] + M[10], z*M[15] + M[11] ],
    [ zf*M[12] - M[8], zf*M[13] - M[9], zf*M[14] - M[10], zf*M[15] - M[11] ]
  ]
}
},{}],97:[function(require,module,exports){
/**
 * inspired by is-number <https://github.com/jonschlinkert/is-number>
 * but significantly simplified and sped up by ignoring number and string constructors
 * ie these return false:
 *   new Number(1)
 *   new String('1')
 */

'use strict';

/**
 * Is this string all whitespace?
 * This solution kind of makes my brain hurt, but it's significantly faster
 * than !str.trim() or any other solution I could find.
 *
 * whitespace codes from: http://en.wikipedia.org/wiki/Whitespace_character
 * and verified with:
 *
 *  for(var i = 0; i < 65536; i++) {
 *      var s = String.fromCharCode(i);
 *      if(+s===0 && !s.trim()) console.log(i, s);
 *  }
 *
 * which counts a couple of these as *not* whitespace, but finds nothing else
 * that *is* whitespace. Note that charCodeAt stops at 16 bits, but it appears
 * that there are no whitespace characters above this, and code points above
 * this do not map onto white space characters.
 */
function allBlankCharCodes(str){
    var l = str.length,
        a;
    for(var i = 0; i < l; i++) {
        a = str.charCodeAt(i);
        if((a < 9 || a > 13) && (a !== 32) && (a !== 133) && (a !== 160) &&
            (a !== 5760) && (a !== 6158) && (a < 8192 || a > 8205) &&
            (a !== 8232) && (a !== 8233) && (a !== 8239) && (a !== 8287) &&
            (a !== 8288) && (a !== 12288) && (a !== 65279)) {
                return false;
        }
    }
    return true;
}

module.exports = function(n) {
    var type = typeof n;
    if(type === 'string') {
        var original = n;
        n = +n;
        // whitespace strings cast to zero - filter them out
        if(n===0 && allBlankCharCodes(original)) return false;
    }
    else if(type !== 'number') return false;

    return n - n < 1;
};

},{}],98:[function(require,module,exports){
'use strict';

module.exports = createFilter;

var types = ['Unknown', 'Point', 'LineString', 'Polygon'];

/**
 * Given a filter expressed as nested arrays, return a new function
 * that evaluates whether a given feature (with a .properties or .tags property)
 * passes its test.
 *
 * @param {Array} filter mapbox gl filter
 * @returns {Function} filter-evaluating function
 */
function createFilter(filter) {
    return new Function('f', 'var p = (f && f.properties || {}); return ' + compile(filter));
}

function compile(filter) {
    if (!filter) return 'true';
    var op = filter[0];
    if (filter.length <= 1) return op === 'any' ? 'false' : 'true';
    var str =
        op === '==' ? compileComparisonOp(filter[1], filter[2], '===', false) :
        op === '!=' ? compileComparisonOp(filter[1], filter[2], '!==', false) :
        op === '<' ||
        op === '>' ||
        op === '<=' ||
        op === '>=' ? compileComparisonOp(filter[1], filter[2], op, true) :
        op === 'any' ? compileLogicalOp(filter.slice(1), '||') :
        op === 'all' ? compileLogicalOp(filter.slice(1), '&&') :
        op === 'none' ? compileNegation(compileLogicalOp(filter.slice(1), '||')) :
        op === 'in' ? compileInOp(filter[1], filter.slice(2)) :
        op === '!in' ? compileNegation(compileInOp(filter[1], filter.slice(2))) :
        op === 'has' ? compileHasOp(filter[1]) :
        op === '!has' ? compileNegation(compileHasOp([filter[1]])) :
        'true';
    return '(' + str + ')';
}

function compilePropertyReference(property) {
    return property === '$type' ? 'f.type' :
        property === '$id' ? 'f.id' :
        'p[' + JSON.stringify(property) + ']';
}

function compileComparisonOp(property, value, op, checkType) {
    var left = compilePropertyReference(property);
    var right = property === '$type' ? types.indexOf(value) : JSON.stringify(value);
    return (checkType ? 'typeof ' + left + '=== typeof ' + right + '&&' : '') + left + op + right;
}

function compileLogicalOp(expressions, op) {
    return expressions.map(compile).join(op);
}

function compileInOp(property, values) {
    if (property === '$type') values = values.map(function(value) { return types.indexOf(value); });
    var left = JSON.stringify(values.sort(compare));
    var right = compilePropertyReference(property);

    if (values.length <= 200) return left + '.indexOf(' + right + ') !== -1';

    return 'function(v, a, i, j) {' +
        'while (i <= j) { var m = (i + j) >> 1;' +
        '    if (a[m] === v) return true; if (a[m] > v) j = m - 1; else i = m + 1;' +
        '}' +
    'return false; }(' + right + ', ' + left + ',0,' + (values.length - 1) + ')';
}

function compileHasOp(property) {
    return JSON.stringify(property) + ' in p';
}

function compileNegation(expression) {
    return '!(' + expression + ')';
}

// Comparison function to sort numbers and strings
function compare(a, b) {
    return a < b ? -1 : a > b ? 1 : 0;
}

},{}],99:[function(require,module,exports){
'use strict'

module.exports = createFilteredVector

var cubicHermite = require('cubic-hermite')
var bsearch = require('binary-search-bounds')

function clamp(lo, hi, x) {
  return Math.min(hi, Math.max(lo, x))
}

function FilteredVector(state0, velocity0, t0) {
  this.dimension  = state0.length
  this.bounds     = [ new Array(this.dimension), new Array(this.dimension) ]
  for(var i=0; i<this.dimension; ++i) {
    this.bounds[0][i] = -Infinity
    this.bounds[1][i] = Infinity
  }
  this._state     = state0.slice().reverse()
  this._velocity  = velocity0.slice().reverse()
  this._time      = [ t0 ]
  this._scratch   = [ state0.slice(), state0.slice(), state0.slice(), state0.slice(), state0.slice() ]
}

var proto = FilteredVector.prototype

proto.flush = function(t) {
  var idx = bsearch.gt(this._time, t) - 1
  if(idx <= 0) {
    return
  }
  this._time.splice(0, idx)
  this._state.splice(0, idx * this.dimension)
  this._velocity.splice(0, idx * this.dimension)
}

proto.curve = function(t) {
  var time      = this._time
  var n         = time.length
  var idx       = bsearch.le(time, t)
  var result    = this._scratch[0]
  var state     = this._state
  var velocity  = this._velocity
  var d         = this.dimension
  var bounds    = this.bounds
  if(idx < 0) {
    var ptr = d-1
    for(var i=0; i<d; ++i, --ptr) {
      result[i] = state[ptr]
    }
  } else if(idx >= n-1) {
    var ptr = state.length-1
    var tf = t - time[n-1]
    for(var i=0; i<d; ++i, --ptr) {
      result[i] = state[ptr] + tf * velocity[ptr]
    }
  } else {
    var ptr = d * (idx+1) - 1
    var t0  = time[idx]
    var t1  = time[idx+1]
    var dt  = (t1 - t0) || 1.0
    var x0  = this._scratch[1]
    var x1  = this._scratch[2]
    var v0  = this._scratch[3]
    var v1  = this._scratch[4]
    var steady = true
    for(var i=0; i<d; ++i, --ptr) {
      x0[i] = state[ptr]
      v0[i] = velocity[ptr] * dt
      x1[i] = state[ptr+d]
      v1[i] = velocity[ptr+d] * dt
      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
    }
    if(steady) {
      for(var i=0; i<d; ++i) {
        result[i] = x0[i]
      }
    } else {
      cubicHermite(x0, v0, x1, v1, (t-t0)/dt, result)
    }
  }
  var lo = bounds[0]
  var hi = bounds[1]
  for(var i=0; i<d; ++i) {
    result[i] = clamp(lo[i], hi[i], result[i])
  }
  return result
}

proto.dcurve = function(t) {
  var time     = this._time
  var n        = time.length
  var idx      = bsearch.le(time, t)
  var result   = this._scratch[0]
  var state    = this._state
  var velocity = this._velocity
  var d        = this.dimension
  if(idx >= n-1) {
    var ptr = state.length-1
    var tf = t - time[n-1]
    for(var i=0; i<d; ++i, --ptr) {
      result[i] = velocity[ptr]
    }
  } else {
    var ptr = d * (idx+1) - 1
    var t0 = time[idx]
    var t1 = time[idx+1]
    var dt = (t1 - t0) || 1.0
    var x0 = this._scratch[1]
    var x1 = this._scratch[2]
    var v0 = this._scratch[3]
    var v1 = this._scratch[4]
    var steady = true
    for(var i=0; i<d; ++i, --ptr) {
      x0[i] = state[ptr]
      v0[i] = velocity[ptr] * dt
      x1[i] = state[ptr+d]
      v1[i] = velocity[ptr+d] * dt
      steady = steady && (x0[i] === x1[i] && v0[i] === v1[i] && v0[i] === 0.0)
    }
    if(steady) {
      for(var i=0; i<d; ++i) {
        result[i] = 0.0
      }
    } else {
      cubicHermite.derivative(x0, v0, x1, v1, (t-t0)/dt, result)
      for(var i=0; i<d; ++i) {
        result[i] /= dt
      }
    }
  }
  return result
}

proto.lastT = function() {
  var time = this._time
  return time[time.length-1]
}

proto.stable = function() {
  var velocity = this._velocity
  var ptr = velocity.length
  for(var i=this.dimension-1; i>=0; --i) {
    if(velocity[--ptr]) {
      return false
    }
  }
  return true
}

proto.jump = function(t) {
  var t0 = this.lastT()
  var d  = this.dimension
  if(t < t0 || arguments.length !== d+1) {
    return
  }
  var state     = this._state
  var velocity  = this._velocity
  var ptr       = state.length-this.dimension
  var bounds    = this.bounds
  var lo        = bounds[0]
  var hi        = bounds[1]
  this._time.push(t0, t)
  for(var j=0; j<2; ++j) {
    for(var i=0; i<d; ++i) {
      state.push(state[ptr++])
      velocity.push(0)
    }
  }
  this._time.push(t)
  for(var i=d; i>0; --i) {
    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
    velocity.push(0)
  }
}

proto.push = function(t) {
  var t0 = this.lastT()
  var d  = this.dimension
  if(t < t0 || arguments.length !== d+1) {
    return
  }
  var state     = this._state
  var velocity  = this._velocity
  var ptr       = state.length-this.dimension
  var dt        = t - t0
  var bounds    = this.bounds
  var lo        = bounds[0]
  var hi        = bounds[1]
  var sf        = (dt > 1e-6) ? 1/dt : 0
  this._time.push(t)
  for(var i=d; i>0; --i) {
    var xc = clamp(lo[i-1], hi[i-1], arguments[i])
    state.push(xc)
    velocity.push((xc - state[ptr++]) * sf)
  }
}

proto.set = function(t) {
  var d = this.dimension
  if(t < this.lastT() || arguments.length !== d+1) {
    return
  }
  var state     = this._state
  var velocity  = this._velocity
  var bounds    = this.bounds
  var lo        = bounds[0]
  var hi        = bounds[1]
  this._time.push(t)
  for(var i=d; i>0; --i) {
    state.push(clamp(lo[i-1], hi[i-1], arguments[i]))
    velocity.push(0)
  }
}

proto.move = function(t) {
  var t0 = this.lastT()
  var d  = this.dimension
  if(t <= t0 || arguments.length !== d+1) {
    return
  }
  var state    = this._state
  var velocity = this._velocity
  var statePtr = state.length - this.dimension
  var bounds   = this.bounds
  var lo       = bounds[0]
  var hi       = bounds[1]
  var dt       = t - t0
  var sf       = (dt > 1e-6) ? 1/dt : 0.0
  this._time.push(t)
  for(var i=d; i>0; --i) {
    var dx = arguments[i]
    state.push(clamp(lo[i-1], hi[i-1], state[statePtr++] + dx))
    velocity.push(dx * sf)
  }
}

proto.idle = function(t) {
  var t0 = this.lastT()
  if(t < t0) {
    return
  }
  var d        = this.dimension
  var state    = this._state
  var velocity = this._velocity
  var statePtr = state.length-d
  var bounds   = this.bounds
  var lo       = bounds[0]
  var hi       = bounds[1]
  var dt       = t - t0
  this._time.push(t)
  for(var i=d-1; i>=0; --i) {
    state.push(clamp(lo[i], hi[i], state[statePtr] + dt * velocity[statePtr]))
    velocity.push(0)
    statePtr += 1
  }
}

function getZero(d) {
  var result = new Array(d)
  for(var i=0; i<d; ++i) {
    result[i] = 0.0
  }
  return result
}

function createFilteredVector(initState, initVelocity, initTime) {
  switch(arguments.length) {
    case 0:
      return new FilteredVector([0], [0], 0)
    case 1:
      if(typeof initState === 'number') {
        var zero = getZero(initState)
        return new FilteredVector(zero, zero, 0)
      } else {
        return new FilteredVector(initState, getZero(initState.length), 0)
      }
    case 2:
      if(typeof initVelocity === 'number') {
        var zero = getZero(initState.length)
        return new FilteredVector(initState, zero, +initVelocity)
      } else {
        initTime = 0
      }
    case 3:
      if(initState.length !== initVelocity.length) {
        throw new Error('state and velocity lengths must match')
      }
      return new FilteredVector(initState, initVelocity, initTime)
  }
}

},{"binary-search-bounds":32,"cubic-hermite":81}],100:[function(require,module,exports){
"use strict"

module.exports = createRBTree

var RED   = 0
var BLACK = 1

function RBNode(color, key, value, left, right, count) {
  this._color = color
  this.key = key
  this.value = value
  this.left = left
  this.right = right
  this._count = count
}

function cloneNode(node) {
  return new RBNode(node._color, node.key, node.value, node.left, node.right, node._count)
}

function repaint(color, node) {
  return new RBNode(color, node.key, node.value, node.left, node.right, node._count)
}

function recount(node) {
  node._count = 1 + (node.left ? node.left._count : 0) + (node.right ? node.right._count : 0)
}

function RedBlackTree(compare, root) {
  this._compare = compare
  this.root = root
}

var proto = RedBlackTree.prototype

Object.defineProperty(proto, "keys", {
  get: function() {
    var result = []
    this.forEach(function(k,v) {
      result.push(k)
    })
    return result
  }
})

Object.defineProperty(proto, "values", {
  get: function() {
    var result = []
    this.forEach(function(k,v) {
      result.push(v)
    })
    return result
  }
})

//Returns the number of nodes in the tree
Object.defineProperty(proto, "length", {
  get: function() {
    if(this.root) {
      return this.root._count
    }
    return 0
  }
})

//Insert a new item into the tree
proto.insert = function(key, value) {
  var cmp = this._compare
  //Find point to insert new node at
  var n = this.root
  var n_stack = []
  var d_stack = []
  while(n) {
    var d = cmp(key, n.key)
    n_stack.push(n)
    d_stack.push(d)
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  //Rebuild path to leaf node
  n_stack.push(new RBNode(RED, key, value, null, null, 1))
  for(var s=n_stack.length-2; s>=0; --s) {
    var n = n_stack[s]
    if(d_stack[s] <= 0) {
      n_stack[s] = new RBNode(n._color, n.key, n.value, n_stack[s+1], n.right, n._count+1)
    } else {
      n_stack[s] = new RBNode(n._color, n.key, n.value, n.left, n_stack[s+1], n._count+1)
    }
  }
  //Rebalance tree using rotations
  //console.log("start insert", key, d_stack)
  for(var s=n_stack.length-1; s>1; --s) {
    var p = n_stack[s-1]
    var n = n_stack[s]
    if(p._color === BLACK || n._color === BLACK) {
      break
    }
    var pp = n_stack[s-2]
    if(pp.left === p) {
      if(p.left === n) {
        var y = pp.right
        if(y && y._color === RED) {
          //console.log("LLr")
          p._color = BLACK
          pp.right = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("LLb")
          pp._color = RED
          pp.left = p.right
          p._color = BLACK
          p.right = pp
          n_stack[s-2] = p
          n_stack[s-1] = n
          recount(pp)
          recount(p)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.left === pp) {
              ppp.left = p
            } else {
              ppp.right = p
            }
          }
          break
        }
      } else {
        var y = pp.right
        if(y && y._color === RED) {
          //console.log("LRr")
          p._color = BLACK
          pp.right = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("LRb")
          p.right = n.left
          pp._color = RED
          pp.left = n.right
          n._color = BLACK
          n.left = p
          n.right = pp
          n_stack[s-2] = n
          n_stack[s-1] = p
          recount(pp)
          recount(p)
          recount(n)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.left === pp) {
              ppp.left = n
            } else {
              ppp.right = n
            }
          }
          break
        }
      }
    } else {
      if(p.right === n) {
        var y = pp.left
        if(y && y._color === RED) {
          //console.log("RRr", y.key)
          p._color = BLACK
          pp.left = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("RRb")
          pp._color = RED
          pp.right = p.left
          p._color = BLACK
          p.left = pp
          n_stack[s-2] = p
          n_stack[s-1] = n
          recount(pp)
          recount(p)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.right === pp) {
              ppp.right = p
            } else {
              ppp.left = p
            }
          }
          break
        }
      } else {
        var y = pp.left
        if(y && y._color === RED) {
          //console.log("RLr")
          p._color = BLACK
          pp.left = repaint(BLACK, y)
          pp._color = RED
          s -= 1
        } else {
          //console.log("RLb")
          p.left = n.right
          pp._color = RED
          pp.right = n.left
          n._color = BLACK
          n.right = p
          n.left = pp
          n_stack[s-2] = n
          n_stack[s-1] = p
          recount(pp)
          recount(p)
          recount(n)
          if(s >= 3) {
            var ppp = n_stack[s-3]
            if(ppp.right === pp) {
              ppp.right = n
            } else {
              ppp.left = n
            }
          }
          break
        }
      }
    }
  }
  //Return new tree
  n_stack[0]._color = BLACK
  return new RedBlackTree(cmp, n_stack[0])
}


//Visit all nodes inorder
function doVisitFull(visit, node) {
  if(node.left) {
    var v = doVisitFull(visit, node.left)
    if(v) { return v }
  }
  var v = visit(node.key, node.value)
  if(v) { return v }
  if(node.right) {
    return doVisitFull(visit, node.right)
  }
}

//Visit half nodes in order
function doVisitHalf(lo, compare, visit, node) {
  var l = compare(lo, node.key)
  if(l <= 0) {
    if(node.left) {
      var v = doVisitHalf(lo, compare, visit, node.left)
      if(v) { return v }
    }
    var v = visit(node.key, node.value)
    if(v) { return v }
  }
  if(node.right) {
    return doVisitHalf(lo, compare, visit, node.right)
  }
}

//Visit all nodes within a range
function doVisit(lo, hi, compare, visit, node) {
  var l = compare(lo, node.key)
  var h = compare(hi, node.key)
  var v
  if(l <= 0) {
    if(node.left) {
      v = doVisit(lo, hi, compare, visit, node.left)
      if(v) { return v }
    }
    if(h > 0) {
      v = visit(node.key, node.value)
      if(v) { return v }
    }
  }
  if(h > 0 && node.right) {
    return doVisit(lo, hi, compare, visit, node.right)
  }
}


proto.forEach = function rbTreeForEach(visit, lo, hi) {
  if(!this.root) {
    return
  }
  switch(arguments.length) {
    case 1:
      return doVisitFull(visit, this.root)
    break

    case 2:
      return doVisitHalf(lo, this._compare, visit, this.root)
    break

    case 3:
      if(this._compare(lo, hi) >= 0) {
        return
      }
      return doVisit(lo, hi, this._compare, visit, this.root)
    break
  }
}

//First item in list
Object.defineProperty(proto, "begin", {
  get: function() {
    var stack = []
    var n = this.root
    while(n) {
      stack.push(n)
      n = n.left
    }
    return new RedBlackTreeIterator(this, stack)
  }
})

//Last item in list
Object.defineProperty(proto, "end", {
  get: function() {
    var stack = []
    var n = this.root
    while(n) {
      stack.push(n)
      n = n.right
    }
    return new RedBlackTreeIterator(this, stack)
  }
})

//Find the ith item in the tree
proto.at = function(idx) {
  if(idx < 0) {
    return new RedBlackTreeIterator(this, [])
  }
  var n = this.root
  var stack = []
  while(true) {
    stack.push(n)
    if(n.left) {
      if(idx < n.left._count) {
        n = n.left
        continue
      }
      idx -= n.left._count
    }
    if(!idx) {
      return new RedBlackTreeIterator(this, stack)
    }
    idx -= 1
    if(n.right) {
      if(idx >= n.right._count) {
        break
      }
      n = n.right
    } else {
      break
    }
  }
  return new RedBlackTreeIterator(this, [])
}

proto.ge = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d <= 0) {
      last_ptr = stack.length
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

proto.gt = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d < 0) {
      last_ptr = stack.length
    }
    if(d < 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

proto.lt = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d > 0) {
      last_ptr = stack.length
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

proto.le = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  var last_ptr = 0
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d >= 0) {
      last_ptr = stack.length
    }
    if(d < 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  stack.length = last_ptr
  return new RedBlackTreeIterator(this, stack)
}

//Finds the item with key if it exists
proto.find = function(key) {
  var cmp = this._compare
  var n = this.root
  var stack = []
  while(n) {
    var d = cmp(key, n.key)
    stack.push(n)
    if(d === 0) {
      return new RedBlackTreeIterator(this, stack)
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  return new RedBlackTreeIterator(this, [])
}

//Removes item with key from tree
proto.remove = function(key) {
  var iter = this.find(key)
  if(iter) {
    return iter.remove()
  }
  return this
}

//Returns the item at `key`
proto.get = function(key) {
  var cmp = this._compare
  var n = this.root
  while(n) {
    var d = cmp(key, n.key)
    if(d === 0) {
      return n.value
    }
    if(d <= 0) {
      n = n.left
    } else {
      n = n.right
    }
  }
  return
}

//Iterator for red black tree
function RedBlackTreeIterator(tree, stack) {
  this.tree = tree
  this._stack = stack
}

var iproto = RedBlackTreeIterator.prototype

//Test if iterator is valid
Object.defineProperty(iproto, "valid", {
  get: function() {
    return this._stack.length > 0
  }
})

//Node of the iterator
Object.defineProperty(iproto, "node", {
  get: function() {
    if(this._stack.length > 0) {
      return this._stack[this._stack.length-1]
    }
    return null
  },
  enumerable: true
})

//Makes a copy of an iterator
iproto.clone = function() {
  return new RedBlackTreeIterator(this.tree, this._stack.slice())
}

//Swaps two nodes
function swapNode(n, v) {
  n.key = v.key
  n.value = v.value
  n.left = v.left
  n.right = v.right
  n._color = v._color
  n._count = v._count
}

//Fix up a double black node in a tree
function fixDoubleBlack(stack) {
  var n, p, s, z
  for(var i=stack.length-1; i>=0; --i) {
    n = stack[i]
    if(i === 0) {
      n._color = BLACK
      return
    }
    //console.log("visit node:", n.key, i, stack[i].key, stack[i-1].key)
    p = stack[i-1]
    if(p.left === n) {
      //console.log("left child")
      s = p.right
      if(s.right && s.right._color === RED) {
        //console.log("case 1: right sibling child red")
        s = p.right = cloneNode(s)
        z = s.right = cloneNode(s.right)
        p.right = s.left
        s.left = p
        s.right = z
        s._color = p._color
        n._color = BLACK
        p._color = BLACK
        z._color = BLACK
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.left === p) {
            pp.left = s
          } else {
            pp.right = s
          }
        }
        stack[i-1] = s
        return
      } else if(s.left && s.left._color === RED) {
        //console.log("case 1: left sibling child red")
        s = p.right = cloneNode(s)
        z = s.left = cloneNode(s.left)
        p.right = z.left
        s.left = z.right
        z.left = p
        z.right = s
        z._color = p._color
        p._color = BLACK
        s._color = BLACK
        n._color = BLACK
        recount(p)
        recount(s)
        recount(z)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.left === p) {
            pp.left = z
          } else {
            pp.right = z
          }
        }
        stack[i-1] = z
        return
      }
      if(s._color === BLACK) {
        if(p._color === RED) {
          //console.log("case 2: black sibling, red parent", p.right.value)
          p._color = BLACK
          p.right = repaint(RED, s)
          return
        } else {
          //console.log("case 2: black sibling, black parent", p.right.value)
          p.right = repaint(RED, s)
          continue  
        }
      } else {
        //console.log("case 3: red sibling")
        s = cloneNode(s)
        p.right = s.left
        s.left = p
        s._color = p._color
        p._color = RED
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.left === p) {
            pp.left = s
          } else {
            pp.right = s
          }
        }
        stack[i-1] = s
        stack[i] = p
        if(i+1 < stack.length) {
          stack[i+1] = n
        } else {
          stack.push(n)
        }
        i = i+2
      }
    } else {
      //console.log("right child")
      s = p.left
      if(s.left && s.left._color === RED) {
        //console.log("case 1: left sibling child red", p.value, p._color)
        s = p.left = cloneNode(s)
        z = s.left = cloneNode(s.left)
        p.left = s.right
        s.right = p
        s.left = z
        s._color = p._color
        n._color = BLACK
        p._color = BLACK
        z._color = BLACK
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.right === p) {
            pp.right = s
          } else {
            pp.left = s
          }
        }
        stack[i-1] = s
        return
      } else if(s.right && s.right._color === RED) {
        //console.log("case 1: right sibling child red")
        s = p.left = cloneNode(s)
        z = s.right = cloneNode(s.right)
        p.left = z.right
        s.right = z.left
        z.right = p
        z.left = s
        z._color = p._color
        p._color = BLACK
        s._color = BLACK
        n._color = BLACK
        recount(p)
        recount(s)
        recount(z)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.right === p) {
            pp.right = z
          } else {
            pp.left = z
          }
        }
        stack[i-1] = z
        return
      }
      if(s._color === BLACK) {
        if(p._color === RED) {
          //console.log("case 2: black sibling, red parent")
          p._color = BLACK
          p.left = repaint(RED, s)
          return
        } else {
          //console.log("case 2: black sibling, black parent")
          p.left = repaint(RED, s)
          continue  
        }
      } else {
        //console.log("case 3: red sibling")
        s = cloneNode(s)
        p.left = s.right
        s.right = p
        s._color = p._color
        p._color = RED
        recount(p)
        recount(s)
        if(i > 1) {
          var pp = stack[i-2]
          if(pp.right === p) {
            pp.right = s
          } else {
            pp.left = s
          }
        }
        stack[i-1] = s
        stack[i] = p
        if(i+1 < stack.length) {
          stack[i+1] = n
        } else {
          stack.push(n)
        }
        i = i+2
      }
    }
  }
}

//Removes item at iterator from tree
iproto.remove = function() {
  var stack = this._stack
  if(stack.length === 0) {
    return this.tree
  }
  //First copy path to node
  var cstack = new Array(stack.length)
  var n = stack[stack.length-1]
  cstack[cstack.length-1] = new RBNode(n._color, n.key, n.value, n.left, n.right, n._count)
  for(var i=stack.length-2; i>=0; --i) {
    var n = stack[i]
    if(n.left === stack[i+1]) {
      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
    } else {
      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
    }
  }

  //Get node
  n = cstack[cstack.length-1]
  //console.log("start remove: ", n.value)

  //If not leaf, then swap with previous node
  if(n.left && n.right) {
    //console.log("moving to leaf")

    //First walk to previous leaf
    var split = cstack.length
    n = n.left
    while(n.right) {
      cstack.push(n)
      n = n.right
    }
    //Copy path to leaf
    var v = cstack[split-1]
    cstack.push(new RBNode(n._color, v.key, v.value, n.left, n.right, n._count))
    cstack[split-1].key = n.key
    cstack[split-1].value = n.value

    //Fix up stack
    for(var i=cstack.length-2; i>=split; --i) {
      n = cstack[i]
      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
    }
    cstack[split-1].left = cstack[split]
  }
  //console.log("stack=", cstack.map(function(v) { return v.value }))

  //Remove leaf node
  n = cstack[cstack.length-1]
  if(n._color === RED) {
    //Easy case: removing red leaf
    //console.log("RED leaf")
    var p = cstack[cstack.length-2]
    if(p.left === n) {
      p.left = null
    } else if(p.right === n) {
      p.right = null
    }
    cstack.pop()
    for(var i=0; i<cstack.length; ++i) {
      cstack[i]._count--
    }
    return new RedBlackTree(this.tree._compare, cstack[0])
  } else {
    if(n.left || n.right) {
      //Second easy case:  Single child black parent
      //console.log("BLACK single child")
      if(n.left) {
        swapNode(n, n.left)
      } else if(n.right) {
        swapNode(n, n.right)
      }
      //Child must be red, so repaint it black to balance color
      n._color = BLACK
      for(var i=0; i<cstack.length-1; ++i) {
        cstack[i]._count--
      }
      return new RedBlackTree(this.tree._compare, cstack[0])
    } else if(cstack.length === 1) {
      //Third easy case: root
      //console.log("ROOT")
      return new RedBlackTree(this.tree._compare, null)
    } else {
      //Hard case: Repaint n, and then do some nasty stuff
      //console.log("BLACK leaf no children")
      for(var i=0; i<cstack.length; ++i) {
        cstack[i]._count--
      }
      var parent = cstack[cstack.length-2]
      fixDoubleBlack(cstack)
      //Fix up links
      if(parent.left === n) {
        parent.left = null
      } else {
        parent.right = null
      }
    }
  }
  return new RedBlackTree(this.tree._compare, cstack[0])
}

//Returns key
Object.defineProperty(iproto, "key", {
  get: function() {
    if(this._stack.length > 0) {
      return this._stack[this._stack.length-1].key
    }
    return
  },
  enumerable: true
})

//Returns value
Object.defineProperty(iproto, "value", {
  get: function() {
    if(this._stack.length > 0) {
      return this._stack[this._stack.length-1].value
    }
    return
  },
  enumerable: true
})


//Returns the position of this iterator in the sorted list
Object.defineProperty(iproto, "index", {
  get: function() {
    var idx = 0
    var stack = this._stack
    if(stack.length === 0) {
      var r = this.tree.root
      if(r) {
        return r._count
      }
      return 0
    } else if(stack[stack.length-1].left) {
      idx = stack[stack.length-1].left._count
    }
    for(var s=stack.length-2; s>=0; --s) {
      if(stack[s+1] === stack[s].right) {
        ++idx
        if(stack[s].left) {
          idx += stack[s].left._count
        }
      }
    }
    return idx
  },
  enumerable: true
})

//Advances iterator to next element in list
iproto.next = function() {
  var stack = this._stack
  if(stack.length === 0) {
    return
  }
  var n = stack[stack.length-1]
  if(n.right) {
    n = n.right
    while(n) {
      stack.push(n)
      n = n.left
    }
  } else {
    stack.pop()
    while(stack.length > 0 && stack[stack.length-1].right === n) {
      n = stack[stack.length-1]
      stack.pop()
    }
  }
}

//Checks if iterator is at end of tree
Object.defineProperty(iproto, "hasNext", {
  get: function() {
    var stack = this._stack
    if(stack.length === 0) {
      return false
    }
    if(stack[stack.length-1].right) {
      return true
    }
    for(var s=stack.length-1; s>0; --s) {
      if(stack[s-1].left === stack[s]) {
        return true
      }
    }
    return false
  }
})

//Update value
iproto.update = function(value) {
  var stack = this._stack
  if(stack.length === 0) {
    throw new Error("Can't update empty node!")
  }
  var cstack = new Array(stack.length)
  var n = stack[stack.length-1]
  cstack[cstack.length-1] = new RBNode(n._color, n.key, value, n.left, n.right, n._count)
  for(var i=stack.length-2; i>=0; --i) {
    n = stack[i]
    if(n.left === stack[i+1]) {
      cstack[i] = new RBNode(n._color, n.key, n.value, cstack[i+1], n.right, n._count)
    } else {
      cstack[i] = new RBNode(n._color, n.key, n.value, n.left, cstack[i+1], n._count)
    }
  }
  return new RedBlackTree(this.tree._compare, cstack[0])
}

//Moves iterator backward one element
iproto.prev = function() {
  var stack = this._stack
  if(stack.length === 0) {
    return
  }
  var n = stack[stack.length-1]
  if(n.left) {
    n = n.left
    while(n) {
      stack.push(n)
      n = n.right
    }
  } else {
    stack.pop()
    while(stack.length > 0 && stack[stack.length-1].left === n) {
      n = stack[stack.length-1]
      stack.pop()
    }
  }
}

//Checks if iterator is at start of tree
Object.defineProperty(iproto, "hasPrev", {
  get: function() {
    var stack = this._stack
    if(stack.length === 0) {
      return false
    }
    if(stack[stack.length-1].left) {
      return true
    }
    for(var s=stack.length-1; s>0; --s) {
      if(stack[s-1].right === stack[s]) {
        return true
      }
    }
    return false
  }
})

//Default comparison function
function defaultCompare(a, b) {
  if(a < b) {
    return -1
  }
  if(a > b) {
    return 1
  }
  return 0
}

//Build a tree
function createRBTree(compare) {
  return new RedBlackTree(compare || defaultCompare, null)
}
},{}],101:[function(require,module,exports){
// transliterated from the python snippet here:
// http://en.wikipedia.org/wiki/Lanczos_approximation

var g = 7;
var p = [
    0.99999999999980993,
    676.5203681218851,
    -1259.1392167224028,
    771.32342877765313,
    -176.61502916214059,
    12.507343278686905,
    -0.13857109526572012,
    9.9843695780195716e-6,
    1.5056327351493116e-7
];

var g_ln = 607/128;
var p_ln = [
    0.99999999999999709182,
    57.156235665862923517,
    -59.597960355475491248,
    14.136097974741747174,
    -0.49191381609762019978,
    0.33994649984811888699e-4,
    0.46523628927048575665e-4,
    -0.98374475304879564677e-4,
    0.15808870322491248884e-3,
    -0.21026444172410488319e-3,
    0.21743961811521264320e-3,
    -0.16431810653676389022e-3,
    0.84418223983852743293e-4,
    -0.26190838401581408670e-4,
    0.36899182659531622704e-5
];

// Spouge approximation (suitable for large arguments)
function lngamma(z) {

    if(z < 0) return Number('0/0');
    var x = p_ln[0];
    for(var i = p_ln.length - 1; i > 0; --i) x += p_ln[i] / (z + i);
    var t = z + g_ln + 0.5;
    return .5*Math.log(2*Math.PI)+(z+.5)*Math.log(t)-t+Math.log(x)-Math.log(z);
}

module.exports = function gamma (z) {
    if (z < 0.5) {
        return Math.PI / (Math.sin(Math.PI * z) * gamma(1 - z));
    }
    else if(z > 100) return Math.exp(lngamma(z));
    else {
        z -= 1;
        var x = p[0];
        for (var i = 1; i < g + 2; i++) {
            x += p[i] / (z + i);
        }
        var t = z + g + 0.5;

        return Math.sqrt(2 * Math.PI)
            * Math.pow(t, z + 0.5)
            * Math.exp(-t)
            * x
        ;
    }
};

module.exports.log = lngamma;

},{}],102:[function(require,module,exports){
var wgs84 = require('wgs84');

module.exports.geometry = geometry;
module.exports.ring = ringArea;

function geometry(_) {
    if (_.type === 'Polygon') return polygonArea(_.coordinates);
    else if (_.type === 'MultiPolygon') {
        var area = 0;
        for (var i = 0; i < _.coordinates.length; i++) {
            area += polygonArea(_.coordinates[i]);
        }
        return area;
    } else {
        return null;
    }
}

function polygonArea(coords) {
    var area = 0;
    if (coords && coords.length > 0) {
        area += Math.abs(ringArea(coords[0]));
        for (var i = 1; i < coords.length; i++) {
            area -= Math.abs(ringArea(coords[i]));
        }
    }
    return area;
}

/**
 * Calculate the approximate area of the polygon were it projected onto
 *     the earth.  Note that this area will be positive if ring is oriented
 *     clockwise, otherwise it will be negative.
 *
 * Reference:
 * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
 *     Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
 *     Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
 *
 * Returns:
 * {float} The approximate signed geodesic area of the polygon in square
 *     meters.
 */

function ringArea(coords) {
    var area = 0;

    if (coords.length > 2) {
        var p1, p2;
        for (var i = 0; i < coords.length - 1; i++) {
            p1 = coords[i];
            p2 = coords[i + 1];
            area += rad(p2[0] - p1[0]) * (2 + Math.sin(rad(p1[1])) + Math.sin(rad(p2[1])));
        }

        area = area * wgs84.RADIUS * wgs84.RADIUS / 2;
    }

    return area;
}

function rad(_) {
    return _ * Math.PI / 180;
}

},{"wgs84":1017}],103:[function(require,module,exports){
var geojsonArea = require('geojson-area');

module.exports = rewind;

function rewind(gj, outer) {
    switch ((gj && gj.type) || null) {
        case 'FeatureCollection':
            gj.features = gj.features.map(curryOuter(rewind, outer));
            return gj;
        case 'Feature':
            gj.geometry = rewind(gj.geometry, outer);
            return gj;
        case 'Polygon':
        case 'MultiPolygon':
            return correct(gj, outer);
        default:
            return gj;
    }
}

function curryOuter(a, b) {
    return function(_) { return a(_, b); };
}

function correct(_, outer) {
    if (_.type === 'Polygon') {
        _.coordinates = correctRings(_.coordinates, outer);
    } else if (_.type === 'MultiPolygon') {
        _.coordinates = _.coordinates.map(curryOuter(correctRings, outer));
    }
    return _;
}

function correctRings(_, outer) {
    outer = !!outer;
    _[0] = wind(_[0], !outer);
    for (var i = 1; i < _.length; i++) {
        _[i] = wind(_[i], outer);
    }
    return _;
}

function wind(_, dir) {
    return cw(_) === dir ? _ : _.reverse();
}

function cw(_) {
    return geojsonArea.ring(_) >= 0;
}

},{"geojson-area":102}],104:[function(require,module,exports){
'use strict';

module.exports = clip;

var createFeature = require('./feature');

/* clip features between two axis-parallel lines:
 *     |        |
 *  ___|___     |     /
 * /   |   \____|____/
 *     |        |
 */

function clip(features, scale, k1, k2, axis, intersect, minAll, maxAll) {

    k1 /= scale;
    k2 /= scale;

    if (minAll >= k1 && maxAll <= k2) return features; // trivial accept
    else if (minAll > k2 || maxAll < k1) return null; // trivial reject

    var clipped = [];

    for (var i = 0; i < features.length; i++) {

        var feature = features[i],
            geometry = feature.geometry,
            type = feature.type,
            min, max;

        min = feature.min[axis];
        max = feature.max[axis];

        if (min >= k1 && max <= k2) { // trivial accept
            clipped.push(feature);
            continue;
        } else if (min > k2 || max < k1) continue; // trivial reject

        var slices = type === 1 ?
                clipPoints(geometry, k1, k2, axis) :
                clipGeometry(geometry, k1, k2, axis, intersect, type === 3);

        if (slices.length) {
            // if a feature got clipped, it will likely get clipped on the next zoom level as well,
            // so there's no need to recalculate bboxes
            clipped.push(createFeature(feature.tags, type, slices, feature.id));
        }
    }

    return clipped.length ? clipped : null;
}

function clipPoints(geometry, k1, k2, axis) {
    var slice = [];

    for (var i = 0; i < geometry.length; i++) {
        var a = geometry[i],
            ak = a[axis];

        if (ak >= k1 && ak <= k2) slice.push(a);
    }
    return slice;
}

function clipGeometry(geometry, k1, k2, axis, intersect, closed) {

    var slices = [];

    for (var i = 0; i < geometry.length; i++) {

        var ak = 0,
            bk = 0,
            b = null,
            points = geometry[i],
            area = points.area,
            dist = points.dist,
            outer = points.outer,
            len = points.length,
            a, j, last;

        var slice = [];

        for (j = 0; j < len - 1; j++) {
            a = b || points[j];
            b = points[j + 1];
            ak = bk || a[axis];
            bk = b[axis];

            if (ak < k1) {

                if ((bk > k2)) { // ---|-----|-->
                    slice.push(intersect(a, b, k1), intersect(a, b, k2));
                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);

                } else if (bk >= k1) slice.push(intersect(a, b, k1)); // ---|-->  |

            } else if (ak > k2) {

                if ((bk < k1)) { // <--|-----|---
                    slice.push(intersect(a, b, k2), intersect(a, b, k1));
                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);

                } else if (bk <= k2) slice.push(intersect(a, b, k2)); // |  <--|---

            } else {

                slice.push(a);

                if (bk < k1) { // <--|---  |
                    slice.push(intersect(a, b, k1));
                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);

                } else if (bk > k2) { // |  ---|-->
                    slice.push(intersect(a, b, k2));
                    if (!closed) slice = newSlice(slices, slice, area, dist, outer);
                }
                // | --> |
            }
        }

        // add the last point
        a = points[len - 1];
        ak = a[axis];
        if (ak >= k1 && ak <= k2) slice.push(a);

        // close the polygon if its endpoints are not the same after clipping

        last = slice[slice.length - 1];
        if (closed && last && (slice[0][0] !== last[0] || slice[0][1] !== last[1])) slice.push(slice[0]);

        // add the final slice
        newSlice(slices, slice, area, dist, outer);
    }

    return slices;
}

function newSlice(slices, slice, area, dist, outer) {
    if (slice.length) {
        // we don't recalculate the area/length of the unclipped geometry because the case where it goes
        // below the visibility threshold as a result of clipping is rare, so we avoid doing unnecessary work
        slice.area = area;
        slice.dist = dist;
        if (outer !== undefined) slice.outer = outer;

        slices.push(slice);
    }
    return [];
}

},{"./feature":106}],105:[function(require,module,exports){
'use strict';

module.exports = convert;

var simplify = require('./simplify');
var createFeature = require('./feature');

// converts GeoJSON feature into an intermediate projected JSON vector format with simplification data

function convert(data, tolerance) {
    var features = [];

    if (data.type === 'FeatureCollection') {
        for (var i = 0; i < data.features.length; i++) {
            convertFeature(features, data.features[i], tolerance);
        }
    } else if (data.type === 'Feature') {
        convertFeature(features, data, tolerance);

    } else {
        // single geometry or a geometry collection
        convertFeature(features, {geometry: data}, tolerance);
    }
    return features;
}

function convertFeature(features, feature, tolerance) {
    if (feature.geometry === null) {
        // ignore features with null geometry
        return;
    }

    var geom = feature.geometry,
        type = geom.type,
        coords = geom.coordinates,
        tags = feature.properties,
        id = feature.id,
        i, j, rings, projectedRing;

    if (type === 'Point') {
        features.push(createFeature(tags, 1, [projectPoint(coords)], id));

    } else if (type === 'MultiPoint') {
        features.push(createFeature(tags, 1, project(coords), id));

    } else if (type === 'LineString') {
        features.push(createFeature(tags, 2, [project(coords, tolerance)], id));

    } else if (type === 'MultiLineString' || type === 'Polygon') {
        rings = [];
        for (i = 0; i < coords.length; i++) {
            projectedRing = project(coords[i], tolerance);
            if (type === 'Polygon') projectedRing.outer = (i === 0);
            rings.push(projectedRing);
        }
        features.push(createFeature(tags, type === 'Polygon' ? 3 : 2, rings, id));

    } else if (type === 'MultiPolygon') {
        rings = [];
        for (i = 0; i < coords.length; i++) {
            for (j = 0; j < coords[i].length; j++) {
                projectedRing = project(coords[i][j], tolerance);
                projectedRing.outer = (j === 0);
                rings.push(projectedRing);
            }
        }
        features.push(createFeature(tags, 3, rings, id));

    } else if (type === 'GeometryCollection') {
        for (i = 0; i < geom.geometries.length; i++) {
            convertFeature(features, {
                geometry: geom.geometries[i],
                properties: tags
            }, tolerance);
        }

    } else {
        throw new Error('Input data is not a valid GeoJSON object.');
    }
}

function project(lonlats, tolerance) {
    var projected = [];
    for (var i = 0; i < lonlats.length; i++) {
        projected.push(projectPoint(lonlats[i]));
    }
    if (tolerance) {
        simplify(projected, tolerance);
        calcSize(projected);
    }
    return projected;
}

function projectPoint(p) {
    var sin = Math.sin(p[1] * Math.PI / 180),
        x = (p[0] / 360 + 0.5),
        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);

    y = y < 0 ? 0 :
        y > 1 ? 1 : y;

    return [x, y, 0];
}

// calculate area and length of the poly
function calcSize(points) {
    var area = 0,
        dist = 0;

    for (var i = 0, a, b; i < points.length - 1; i++) {
        a = b || points[i];
        b = points[i + 1];

        area += a[0] * b[1] - b[0] * a[1];

        // use Manhattan distance instead of Euclidian one to avoid expensive square root computation
        dist += Math.abs(b[0] - a[0]) + Math.abs(b[1] - a[1]);
    }
    points.area = Math.abs(area / 2);
    points.dist = dist;
}

},{"./feature":106,"./simplify":108}],106:[function(require,module,exports){
'use strict';

module.exports = createFeature;

function createFeature(tags, type, geom, id) {
    var feature = {
        id: id || null,
        type: type,
        geometry: geom,
        tags: tags || null,
        min: [Infinity, Infinity], // initial bbox values
        max: [-Infinity, -Infinity]
    };
    calcBBox(feature);
    return feature;
}

// calculate the feature bounding box for faster clipping later
function calcBBox(feature) {
    var geometry = feature.geometry,
        min = feature.min,
        max = feature.max;

    if (feature.type === 1) {
        calcRingBBox(min, max, geometry);
    } else {
        for (var i = 0; i < geometry.length; i++) {
            calcRingBBox(min, max, geometry[i]);
        }
    }

    return feature;
}

function calcRingBBox(min, max, points) {
    for (var i = 0, p; i < points.length; i++) {
        p = points[i];
        min[0] = Math.min(p[0], min[0]);
        max[0] = Math.max(p[0], max[0]);
        min[1] = Math.min(p[1], min[1]);
        max[1] = Math.max(p[1], max[1]);
    }
}

},{}],107:[function(require,module,exports){
'use strict';

module.exports = geojsonvt;

var convert = require('./convert'),     // GeoJSON conversion and preprocessing
    transform = require('./transform'), // coordinate transformation
    clip = require('./clip'),           // stripe clipping algorithm
    wrap = require('./wrap'),           // date line processing
    createTile = require('./tile');     // final simplified tile generation


function geojsonvt(data, options) {
    return new GeoJSONVT(data, options);
}

function GeoJSONVT(data, options) {
    options = this.options = extend(Object.create(this.options), options);

    var debug = options.debug;

    if (debug) console.time('preprocess data');

    var z2 = 1 << options.maxZoom, // 2^z
        features = convert(data, options.tolerance / (z2 * options.extent));

    this.tiles = {};
    this.tileCoords = [];

    if (debug) {
        console.timeEnd('preprocess data');
        console.log('index: maxZoom: %d, maxPoints: %d', options.indexMaxZoom, options.indexMaxPoints);
        console.time('generate tiles');
        this.stats = {};
        this.total = 0;
    }

    features = wrap(features, options.buffer / options.extent, intersectX);

    // start slicing from the top tile down
    if (features.length) this.splitTile(features, 0, 0, 0);

    if (debug) {
        if (features.length) console.log('features: %d, points: %d', this.tiles[0].numFeatures, this.tiles[0].numPoints);
        console.timeEnd('generate tiles');
        console.log('tiles generated:', this.total, JSON.stringify(this.stats));
    }
}

GeoJSONVT.prototype.options = {
    maxZoom: 14,            // max zoom to preserve detail on
    indexMaxZoom: 5,        // max zoom in the tile index
    indexMaxPoints: 100000, // max number of points per tile in the tile index
    solidChildren: false,   // whether to tile solid square tiles further
    tolerance: 3,           // simplification tolerance (higher means simpler)
    extent: 4096,           // tile extent
    buffer: 64,             // tile buffer on each side
    debug: 0                // logging level (0, 1 or 2)
};

GeoJSONVT.prototype.splitTile = function (features, z, x, y, cz, cx, cy) {

    var stack = [features, z, x, y],
        options = this.options,
        debug = options.debug,
        solid = null;

    // avoid recursion by using a processing queue
    while (stack.length) {
        y = stack.pop();
        x = stack.pop();
        z = stack.pop();
        features = stack.pop();

        var z2 = 1 << z,
            id = toID(z, x, y),
            tile = this.tiles[id],
            tileTolerance = z === options.maxZoom ? 0 : options.tolerance / (z2 * options.extent);

        if (!tile) {
            if (debug > 1) console.time('creation');

            tile = this.tiles[id] = createTile(features, z2, x, y, tileTolerance, z === options.maxZoom);
            this.tileCoords.push({z: z, x: x, y: y});

            if (debug) {
                if (debug > 1) {
                    console.log('tile z%d-%d-%d (features: %d, points: %d, simplified: %d)',
                        z, x, y, tile.numFeatures, tile.numPoints, tile.numSimplified);
                    console.timeEnd('creation');
                }
                var key = 'z' + z;
                this.stats[key] = (this.stats[key] || 0) + 1;
                this.total++;
            }
        }

        // save reference to original geometry in tile so that we can drill down later if we stop now
        tile.source = features;

        // if it's the first-pass tiling
        if (!cz) {
            // stop tiling if we reached max zoom, or if the tile is too simple
            if (z === options.indexMaxZoom || tile.numPoints <= options.indexMaxPoints) continue;

        // if a drilldown to a specific tile
        } else {
            // stop tiling if we reached base zoom or our target tile zoom
            if (z === options.maxZoom || z === cz) continue;

            // stop tiling if it's not an ancestor of the target tile
            var m = 1 << (cz - z);
            if (x !== Math.floor(cx / m) || y !== Math.floor(cy / m)) continue;
        }

        // stop tiling if the tile is solid clipped square
        if (!options.solidChildren && isClippedSquare(tile, options.extent, options.buffer)) {
            if (cz) solid = z; // and remember the zoom if we're drilling down
            continue;
        }

        // if we slice further down, no need to keep source geometry
        tile.source = null;

        if (debug > 1) console.time('clipping');

        // values we'll use for clipping
        var k1 = 0.5 * options.buffer / options.extent,
            k2 = 0.5 - k1,
            k3 = 0.5 + k1,
            k4 = 1 + k1,
            tl, bl, tr, br, left, right;

        tl = bl = tr = br = null;

        left  = clip(features, z2, x - k1, x + k3, 0, intersectX, tile.min[0], tile.max[0]);
        right = clip(features, z2, x + k2, x + k4, 0, intersectX, tile.min[0], tile.max[0]);

        if (left) {
            tl = clip(left, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
            bl = clip(left, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
        }

        if (right) {
            tr = clip(right, z2, y - k1, y + k3, 1, intersectY, tile.min[1], tile.max[1]);
            br = clip(right, z2, y + k2, y + k4, 1, intersectY, tile.min[1], tile.max[1]);
        }

        if (debug > 1) console.timeEnd('clipping');

        if (features.length) {
            stack.push(tl || [], z + 1, x * 2,     y * 2);
            stack.push(bl || [], z + 1, x * 2,     y * 2 + 1);
            stack.push(tr || [], z + 1, x * 2 + 1, y * 2);
            stack.push(br || [], z + 1, x * 2 + 1, y * 2 + 1);
        }
    }

    return solid;
};

GeoJSONVT.prototype.getTile = function (z, x, y) {
    var options = this.options,
        extent = options.extent,
        debug = options.debug;

    var z2 = 1 << z;
    x = ((x % z2) + z2) % z2; // wrap tile x coordinate

    var id = toID(z, x, y);
    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);

    if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);

    var z0 = z,
        x0 = x,
        y0 = y,
        parent;

    while (!parent && z0 > 0) {
        z0--;
        x0 = Math.floor(x0 / 2);
        y0 = Math.floor(y0 / 2);
        parent = this.tiles[toID(z0, x0, y0)];
    }

    if (!parent || !parent.source) return null;

    // if we found a parent tile containing the original geometry, we can drill down from it
    if (debug > 1) console.log('found parent tile z%d-%d-%d', z0, x0, y0);

    // it parent tile is a solid clipped square, return it instead since it's identical
    if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);

    if (debug > 1) console.time('drilling down');
    var solid = this.splitTile(parent.source, z0, x0, y0, z, x, y);
    if (debug > 1) console.timeEnd('drilling down');

    // one of the parent tiles was a solid clipped square
    if (solid !== null) {
        var m = 1 << (z - solid);
        id = toID(solid, Math.floor(x / m), Math.floor(y / m));
    }

    return this.tiles[id] ? transform.tile(this.tiles[id], extent) : null;
};

function toID(z, x, y) {
    return (((1 << z) * y + x) * 32) + z;
}

function intersectX(a, b, x) {
    return [x, (x - a[0]) * (b[1] - a[1]) / (b[0] - a[0]) + a[1], 1];
}
function intersectY(a, b, y) {
    return [(y - a[1]) * (b[0] - a[0]) / (b[1] - a[1]) + a[0], y, 1];
}

function extend(dest, src) {
    for (var i in src) dest[i] = src[i];
    return dest;
}

// checks whether a tile is a whole-area fill after clipping; if it is, there's no sense slicing it further
function isClippedSquare(tile, extent, buffer) {

    var features = tile.source;
    if (features.length !== 1) return false;

    var feature = features[0];
    if (feature.type !== 3 || feature.geometry.length > 1) return false;

    var len = feature.geometry[0].length;
    if (len !== 5) return false;

    for (var i = 0; i < len; i++) {
        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
        if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
            (p[1] !== -buffer && p[1] !== extent + buffer)) return false;
    }

    return true;
}

},{"./clip":104,"./convert":105,"./tile":109,"./transform":110,"./wrap":111}],108:[function(require,module,exports){
'use strict';

module.exports = simplify;

// calculate simplification data using optimized Douglas-Peucker algorithm

function simplify(points, tolerance) {

    var sqTolerance = tolerance * tolerance,
        len = points.length,
        first = 0,
        last = len - 1,
        stack = [],
        i, maxSqDist, sqDist, index;

    // always retain the endpoints (1 is the max value)
    points[first][2] = 1;
    points[last][2] = 1;

    // avoid recursion by using a stack
    while (last) {

        maxSqDist = 0;

        for (i = first + 1; i < last; i++) {
            sqDist = getSqSegDist(points[i], points[first], points[last]);

            if (sqDist > maxSqDist) {
                index = i;
                maxSqDist = sqDist;
            }
        }

        if (maxSqDist > sqTolerance) {
            points[index][2] = maxSqDist; // save the point importance in squared pixels as a z coordinate
            stack.push(first);
            stack.push(index);
            first = index;

        } else {
            last = stack.pop();
            first = stack.pop();
        }
    }
}

// square distance from a point to a segment
function getSqSegDist(p, a, b) {

    var x = a[0], y = a[1],
        bx = b[0], by = b[1],
        px = p[0], py = p[1],
        dx = bx - x,
        dy = by - y;

    if (dx !== 0 || dy !== 0) {

        var t = ((px - x) * dx + (py - y) * dy) / (dx * dx + dy * dy);

        if (t > 1) {
            x = bx;
            y = by;

        } else if (t > 0) {
            x += dx * t;
            y += dy * t;
        }
    }

    dx = px - x;
    dy = py - y;

    return dx * dx + dy * dy;
}

},{}],109:[function(require,module,exports){
'use strict';

module.exports = createTile;

function createTile(features, z2, tx, ty, tolerance, noSimplify) {
    var tile = {
        features: [],
        numPoints: 0,
        numSimplified: 0,
        numFeatures: 0,
        source: null,
        x: tx,
        y: ty,
        z2: z2,
        transformed: false,
        min: [2, 1],
        max: [-1, 0]
    };
    for (var i = 0; i < features.length; i++) {
        tile.numFeatures++;
        addFeature(tile, features[i], tolerance, noSimplify);

        var min = features[i].min,
            max = features[i].max;

        if (min[0] < tile.min[0]) tile.min[0] = min[0];
        if (min[1] < tile.min[1]) tile.min[1] = min[1];
        if (max[0] > tile.max[0]) tile.max[0] = max[0];
        if (max[1] > tile.max[1]) tile.max[1] = max[1];
    }
    return tile;
}

function addFeature(tile, feature, tolerance, noSimplify) {

    var geom = feature.geometry,
        type = feature.type,
        simplified = [],
        sqTolerance = tolerance * tolerance,
        i, j, ring, p;

    if (type === 1) {
        for (i = 0; i < geom.length; i++) {
            simplified.push(geom[i]);
            tile.numPoints++;
            tile.numSimplified++;
        }

    } else {

        // simplify and transform projected coordinates for tile geometry
        for (i = 0; i < geom.length; i++) {
            ring = geom[i];

            // filter out tiny polylines & polygons
            if (!noSimplify && ((type === 2 && ring.dist < tolerance) ||
                                (type === 3 && ring.area < sqTolerance))) {
                tile.numPoints += ring.length;
                continue;
            }

            var simplifiedRing = [];

            for (j = 0; j < ring.length; j++) {
                p = ring[j];
                // keep points with importance > tolerance
                if (noSimplify || p[2] > sqTolerance) {
                    simplifiedRing.push(p);
                    tile.numSimplified++;
                }
                tile.numPoints++;
            }

            if (type === 3) rewind(simplifiedRing, ring.outer);

            simplified.push(simplifiedRing);
        }
    }

    if (simplified.length) {
        var tileFeature = {
            geometry: simplified,
            type: type,
            tags: feature.tags || null
        };
        if (feature.id !== null) {
            tileFeature.id = feature.id;
        }
        tile.features.push(tileFeature);
    }
}

function rewind(ring, clockwise) {
    var area = signedArea(ring);
    if (area < 0 === clockwise) ring.reverse();
}

function signedArea(ring) {
    var sum = 0;
    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
        p1 = ring[i];
        p2 = ring[j];
        sum += (p2[0] - p1[0]) * (p1[1] + p2[1]);
    }
    return sum;
}

},{}],110:[function(require,module,exports){
'use strict';

exports.tile = transformTile;
exports.point = transformPoint;

// Transforms the coordinates of each feature in the given tile from
// mercator-projected space into (extent x extent) tile space.
function transformTile(tile, extent) {
    if (tile.transformed) return tile;

    var z2 = tile.z2,
        tx = tile.x,
        ty = tile.y,
        i, j, k;

    for (i = 0; i < tile.features.length; i++) {
        var feature = tile.features[i],
            geom = feature.geometry,
            type = feature.type;

        if (type === 1) {
            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);

        } else {
            for (j = 0; j < geom.length; j++) {
                var ring = geom[j];
                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
            }
        }
    }

    tile.transformed = true;

    return tile;
}

function transformPoint(p, extent, z2, tx, ty) {
    var x = Math.round(extent * (p[0] * z2 - tx)),
        y = Math.round(extent * (p[1] * z2 - ty));
    return [x, y];
}

},{}],111:[function(require,module,exports){
'use strict';

var clip = require('./clip');
var createFeature = require('./feature');

module.exports = wrap;

function wrap(features, buffer, intersectX) {
    var merged = features,
        left  = clip(features, 1, -1 - buffer, buffer,     0, intersectX, -1, 2), // left world copy
        right = clip(features, 1,  1 - buffer, 2 + buffer, 0, intersectX, -1, 2); // right world copy

    if (left || right) {
        merged = clip(features, 1, -buffer, 1 + buffer, 0, intersectX, -1, 2) || []; // center world copy

        if (left) merged = shiftFeatureCoords(left, 1).concat(merged); // merge left into center
        if (right) merged = merged.concat(shiftFeatureCoords(right, -1)); // merge right into center
    }

    return merged;
}

function shiftFeatureCoords(features, offset) {
    var newFeatures = [];

    for (var i = 0; i < features.length; i++) {
        var feature = features[i],
            type = feature.type;

        var newGeometry;

        if (type === 1) {
            newGeometry = shiftCoords(feature.geometry, offset);
        } else {
            newGeometry = [];
            for (var j = 0; j < feature.geometry.length; j++) {
                newGeometry.push(shiftCoords(feature.geometry[j], offset));
            }
        }

        newFeatures.push(createFeature(feature.tags, type, newGeometry, feature.id));
    }

    return newFeatures;
}

function shiftCoords(points, offset) {
    var newPoints = [];
    newPoints.area = points.area;
    newPoints.dist = points.dist;

    for (var i = 0; i < points.length; i++) {
        newPoints.push([points[i][0] + offset, points[i][1], points[i][2]]);
    }
    return newPoints;
}

},{"./clip":104,"./feature":106}],112:[function(require,module,exports){
module.exports = getCanvasContext
function getCanvasContext (type, opts) {
  if (typeof type !== 'string') {
    throw new TypeError('must specify type string')
  }

  opts = opts || {}

  if (typeof document === 'undefined' && !opts.canvas) {
    return null // check for Node
  }

  var canvas = opts.canvas || document.createElement('canvas')
  if (typeof opts.width === 'number') {
    canvas.width = opts.width
  }
  if (typeof opts.height === 'number') {
    canvas.height = opts.height
  }

  var attribs = opts
  var gl
  try {
    var names = [ type ]
    // prefix GL contexts
    if (type.indexOf('webgl') === 0) {
      names.push('experimental-' + type)
    }

    for (var i = 0; i < names.length; i++) {
      gl = canvas.getContext(names[i], attribs)
      if (gl) return gl
    }
  } catch (e) {
    gl = null
  }
  return (gl || null) // ensure null on fail
}

},{}],113:[function(require,module,exports){
(function (Buffer,process){
'use strict'

var path          = require('path')
var ndarray       = require('ndarray')
var GifReader     = require('omggif').GifReader
var pack          = require('ndarray-pack')
var through       = require('through')
var parseDataURI  = require('data-uri-to-buffer')

function defaultImage(url, cb) {
  var img = new Image()
  img.crossOrigin = "Anonymous"
  img.onload = function() {
    var canvas = document.createElement('canvas')
    canvas.width = img.width
    canvas.height = img.height
    var context = canvas.getContext('2d')
    context.drawImage(img, 0, 0)
    var pixels = context.getImageData(0, 0, img.width, img.height)
    cb(null, ndarray(new Uint8Array(pixels.data), [img.width, img.height, 4], [4, 4*img.width, 1], 0))
  }
  img.onerror = function(err) {
    cb(err)
  }
  img.src = url
}

//Animated gif loading
function handleGif(data, cb) {
  var reader
  try {
    reader = new GifReader(data)
  } catch(err) {
    cb(err)
    return
  }
  if(reader.numFrames() > 0) {
    var nshape = [reader.numFrames(), reader.height, reader.width, 4]
    var ndata = new Uint8Array(nshape[0] * nshape[1] * nshape[2] * nshape[3])
    var result = ndarray(ndata, nshape)
    try {
      for(var i=0; i<reader.numFrames(); ++i) {
        reader.decodeAndBlitFrameRGBA(i, ndata.subarray(
          result.index(i, 0, 0, 0),
          result.index(i+1, 0, 0, 0)))
      }
    } catch(err) {
      cb(err)
      return
    }
    cb(null, result.transpose(0,2,1))
  } else {
    var nshape = [reader.height, reader.width, 4]
    var ndata = new Uint8Array(nshape[0] * nshape[1] * nshape[2])
    var result = ndarray(ndata, nshape)
    try {
      reader.decodeAndBlitFrameRGBA(0, ndata)
    } catch(err) {
      cb(err)
      return
    }
    cb(null, result.transpose(1,0))
  }
}

function httpGif(url, cb) {
  var xhr          = new XMLHttpRequest()
  xhr.open('GET', url, true)
  xhr.responseType = 'arraybuffer'
  if(xhr.overrideMimeType){
    xhr.overrideMimeType('application/binary')
  }
  xhr.onerror = function(err) {
    cb(err)
  }
  xhr.onload = function() {
    if(xhr.readyState !== 4) {
      return
    }
    var data = new Uint8Array(xhr.response)
    handleGif(data, cb)
    return
  }
  xhr.send()
}

function copyBuffer(buffer) {
  if(buffer[0] === undefined) {
    var n = buffer.length
    var result = new Uint8Array(n)
    for(var i=0; i<n; ++i) {
      result[i] = buffer.get(i)
    }
    return result
  } else {
    return new Uint8Array(buffer)
  }
}

function dataGif(url, cb) {
  process.nextTick(function() {
    try {
      var buffer = parseDataURI(url)
      if(buffer) {
        handleGif(copyBuffer(buffer), cb)
      } else {
        cb(new Error('Error parsing data URI'))
      }
    } catch(err) {
      cb(err)
    }
  })
}

module.exports = function getPixels(url, type, cb) {
  if(!cb) {
    cb = type
    type = ''
  }
  var ext = path.extname(url)
  switch(type || ext.toUpperCase()) {
    case '.GIF':
      httpGif(url, cb)
    break
    default:
      if(Buffer.isBuffer(url)) {
        url = 'data:' + type + ';base64,' + url.toString('base64')
      }
      if(url.indexOf('data:image/gif;') === 0) {
        dataGif(url, cb)
      } else {
        defaultImage(url, cb)
      }
  }
}
}).call(this,{"isBuffer":require("../is-buffer/index.js")},require('_process'))
},{"../is-buffer/index.js":270,"_process":923,"data-uri-to-buffer":87,"ndarray":443,"ndarray-pack":438,"omggif":447,"path":463,"through":984}],114:[function(require,module,exports){
(function (Buffer){
/*
  GIFEncoder.js

  Authors
  Kevin Weiner (original Java version - kweiner@fmsware.com)
  Thibault Imbert (AS3 version - bytearray.org)
  Johan Nordberg (JS version - code@johan-nordberg.com)
  Todd Wolfson (Implemented streams - todd@twolfson.com)
*/

var assert = require('assert');
var EventEmitter = require('events').EventEmitter;
var ReadableStream = require('readable-stream');
var util = require('util');

var NeuQuant = require('./TypedNeuQuant.js');
var LZWEncoder = require('./LZWEncoder.js');

// DEV: By using a capacitor, we prevent creating a data event for every byte written
function ByteCapacitor(options) {
  // Inherit from ReadableStream
  ReadableStream.call(this, options);

  // Start with an empty buffer and allow writes
  this.okayToPush = true;
  this.resetData();
}
util.inherits(ByteCapacitor, ReadableStream);

ByteCapacitor.prototype._read = function () {
  // The output is controlled by the input provided by methods.
  // If we exceed the highwater mark, we will raise an error.
  this.okayToPush = true;
};

ByteCapacitor.prototype.resetData = function () {
  this.data = [];
};

ByteCapacitor.prototype.flushData = function () {
  // If we are not okay to push, emit an error
  if (!this.okayToPush) {
    var err = new Error('GIF memory limit exceeded. Please `read` from GIF before writing additional frames/information.');
    return this.emit('error', err);
  }

  // Otherwise, push out the new buffer
  var buff = new Buffer(this.data);
  this.resetData();
  this.okayToPush = this.push(buff);
};

ByteCapacitor.prototype.writeByte = function (val) {
  this.data.push(val);
};

ByteCapacitor.prototype.writeUTFBytes = function (string) {
  for (var l = string.length, i = 0; i < l; i++) {
    this.writeByte(string.charCodeAt(i));
  }
};

ByteCapacitor.prototype.writeBytes = function (array, offset, length) {
  for (var l = length || array.length, i = offset || 0; i < l; i++) {
    this.writeByte(array[i]);
  }
};

function GIFEncoder(width, height, options) {
  // Fallback options
  options = options || {};

  // Inherit from ByteCapacitor immediately
  // https://github.com/isaacs/readable-stream/blob/v1.1.9/lib/_stream_readable.js#L60-L63
  var hwm = options.highWaterMark;
  ByteCapacitor.call(this, {
    // Allow for up to 64kB of GIFfy-goodness
    highWaterMark: (hwm || hwm === 0) ? hwm : 64 * 1024
  });

  // image size
  this.width = ~~width;
  this.height = ~~height;

  // transparent color if given
  this.transparent = null;

  // transparent index in color table
  this.transIndex = 0;

  // -1 = no repeat, 0 = forever. anything else is repeat count
  this.repeat = -1;

  // frame delay (hundredths)
  this.delay = 0;

  this.pixels = null; // BGR byte array from frame
  this.indexedPixels = null; // converted frame indexed to palette
  this.colorDepth = null; // number of bit planes
  this.colorTab = null; // RGB palette
  this.usedEntry = []; // active palette entries
  this.palSize = 7; // color table size (bits-1)
  this.dispose = -1; // disposal code (-1 = use default)
  this.firstFrame = true;
  this.sample = 10; // default sample interval for quantizer

  // When we encounter a header, new frame, or stop, emit data
  var that = this;
  function flushData() {
    that.flushData();
  }
  this.on('writeHeader#stop', flushData);
  this.on('frame#stop', flushData);
  this.on('finish#stop', function finishGif () {
    // Flush the data
    flushData();

    // Close the gif
    that.push(null);
  });
}
util.inherits(GIFEncoder, ByteCapacitor);

/*
  Sets the delay time between each frame, or changes it for subsequent frames
  (applies to last frame added)
*/
GIFEncoder.prototype.setDelay = function(milliseconds) {
  this.delay = Math.round(milliseconds / 10);
};

/*
  Sets frame rate in frames per second.
*/
GIFEncoder.prototype.setFrameRate = function(fps) {
  this.delay = Math.round(100 / fps);
};

/*
  Sets the GIF frame disposal code for the last added frame and any
  subsequent frames.

  Default is 0 if no transparent color has been set, otherwise 2.
*/
GIFEncoder.prototype.setDispose = function(disposalCode) {
  if (disposalCode >= 0) this.dispose = disposalCode;
};

/*
  Sets the number of times the set of GIF frames should be played.

  -1 = play once
  0 = repeat indefinitely

  Default is -1

  Must be invoked before the first image is added
*/

GIFEncoder.prototype.setRepeat = function(repeat) {
  this.repeat = repeat;
};

/*
  Sets the transparent color for the last added frame and any subsequent
  frames. Since all colors are subject to modification in the quantization
  process, the color in the final palette for each frame closest to the given
  color becomes the transparent color for that frame. May be set to null to
  indicate no transparent color.
*/
GIFEncoder.prototype.setTransparent = function(color) {
  this.transparent = color;
};

// Custom methods for performance hacks around streaming GIF data pieces without re-analyzing/loading
GIFEncoder.prototype.analyzeImage = function (imageData) {
  // convert to correct format if necessary
  this.setImagePixels(this.removeAlphaChannel(imageData));
  this.analyzePixels(); // build color table & map pixels
};

GIFEncoder.prototype.writeImageInfo = function () {
  if (this.firstFrame) {
    this.writeLSD(); // logical screen descriptior
    this.writePalette(); // global color table
    if (this.repeat >= 0) {
      // use NS app extension to indicate reps
      this.writeNetscapeExt();
    }
  }

  this.writeGraphicCtrlExt(); // write graphic control extension
  this.writeImageDesc(); // image descriptor
  if (!this.firstFrame) this.writePalette(); // local color table

  // DEV: This was originally after outputImage but it does not affect order it seems
  this.firstFrame = false;
};

GIFEncoder.prototype.outputImage = function () {
  this.writePixels(); // encode and write pixel data
};

/*
  Adds next GIF frame. The frame is not written immediately, but is
  actually deferred until the next frame is received so that timing
  data can be inserted.  Invoking finish() flushes all frames.
*/
GIFEncoder.prototype.addFrame = function(imageData) {
  this.emit('frame#start');

  this.analyzeImage(imageData);
  this.writeImageInfo();
  this.outputImage();

  this.emit('frame#stop');
};

/*
  Adds final trailer to the GIF stream, if you don't call the finish method
  the GIF stream will not be valid.
*/
GIFEncoder.prototype.finish = function() {
  this.emit('finish#start');
  this.writeByte(0x3b); // gif trailer
  this.emit('finish#stop');
};

/*
  Sets quality of color quantization (conversion of images to the maximum 256
  colors allowed by the GIF specification). Lower values (minimum = 1)
  produce better colors, but slow processing significantly. 10 is the
  default, and produces good color mapping at reasonable speeds. Values
  greater than 20 do not yield significant improvements in speed.
*/
GIFEncoder.prototype.setQuality = function(quality) {
  if (quality < 1) quality = 1;
  this.sample = quality;
};

/*
  Writes GIF file header
*/
GIFEncoder.prototype.writeHeader = function() {
  this.emit('writeHeader#start');
  this.writeUTFBytes("GIF89a");
  this.emit('writeHeader#stop');
};

/*
  Analyzes current frame colors and creates color map.
*/
GIFEncoder.prototype.analyzePixels = function() {
  var len = this.pixels.length;
  var nPix = len / 3;

  // TODO: Re-use indexedPixels
  this.indexedPixels = new Uint8Array(nPix);

  var imgq = new NeuQuant(this.pixels, this.sample);
  imgq.buildColormap(); // create reduced palette
  this.colorTab = imgq.getColormap();

  // map image pixels to new palette
  var k = 0;
  for (var j = 0; j < nPix; j++) {
    var index = imgq.lookupRGB(
      this.pixels[k++] & 0xff,
      this.pixels[k++] & 0xff,
      this.pixels[k++] & 0xff
    );
    this.usedEntry[index] = true;
    this.indexedPixels[j] = index;
  }

  this.pixels = null;
  this.colorDepth = 8;
  this.palSize = 7;

  // get closest match to transparent color if specified
  if (this.transparent !== null) {
    this.transIndex = this.findClosest(this.transparent);
  }
};

/*
  Returns index of palette color closest to c
*/
GIFEncoder.prototype.findClosest = function(c) {
  if (this.colorTab === null) return -1;

  var r = (c & 0xFF0000) >> 16;
  var g = (c & 0x00FF00) >> 8;
  var b = (c & 0x0000FF);
  var minpos = 0;
  var dmin = 256 * 256 * 256;
  var len = this.colorTab.length;

  for (var i = 0; i < len;) {
    var dr = r - (this.colorTab[i++] & 0xff);
    var dg = g - (this.colorTab[i++] & 0xff);
    var db = b - (this.colorTab[i] & 0xff);
    var d = dr * dr + dg * dg + db * db;
    var index = i / 3;
    if (this.usedEntry[index] && (d < dmin)) {
      dmin = d;
      minpos = index;
    }
    i++;
  }

  return minpos;
};

/*
  Extracts image pixels into byte array pixels
  (removes alphachannel from canvas imagedata)
*/
GIFEncoder.prototype.removeAlphaChannel = function (data) {
  var w = this.width;
  var h = this.height;
  var pixels = new Uint8Array(w * h * 3);

  var count = 0;

  for (var i = 0; i < h; i++) {
    for (var j = 0; j < w; j++) {
      var b = (i * w * 4) + j * 4;
      pixels[count++] = data[b];
      pixels[count++] = data[b+1];
      pixels[count++] = data[b+2];
    }
  }

  return pixels;
};

GIFEncoder.prototype.setImagePixels = function(pixels) {
  this.pixels = pixels;
};

/*
  Writes Graphic Control Extension
*/
GIFEncoder.prototype.writeGraphicCtrlExt = function() {
  this.writeByte(0x21); // extension introducer
  this.writeByte(0xf9); // GCE label
  this.writeByte(4); // data block size

  var transp, disp;
  if (this.transparent === null) {
    transp = 0;
    disp = 0; // dispose = no action
  } else {
    transp = 1;
    disp = 2; // force clear if using transparent color
  }

  if (this.dispose >= 0) {
    disp = dispose & 7; // user override
  }
  disp <<= 2;

  // packed fields
  this.writeByte(
    0 | // 1:3 reserved
    disp | // 4:6 disposal
    0 | // 7 user input - 0 = none
    transp // 8 transparency flag
  );

  this.writeShort(this.delay); // delay x 1/100 sec
  this.writeByte(this.transIndex); // transparent color index
  this.writeByte(0); // block terminator
};

/*
  Writes Image Descriptor
*/
GIFEncoder.prototype.writeImageDesc = function() {
  this.writeByte(0x2c); // image separator
  this.writeShort(0); // image position x,y = 0,0
  this.writeShort(0);
  this.writeShort(this.width); // image size
  this.writeShort(this.height);

  // packed fields
  if (this.firstFrame) {
    // no LCT - GCT is used for first (or only) frame
    this.writeByte(0);
  } else {
    // specify normal LCT
    this.writeByte(
      0x80 | // 1 local color table 1=yes
      0 | // 2 interlace - 0=no
      0 | // 3 sorted - 0=no
      0 | // 4-5 reserved
      this.palSize // 6-8 size of color table
    );
  }
};

/*
  Writes Logical Screen Descriptor
*/
GIFEncoder.prototype.writeLSD = function() {
  // logical screen size
  this.writeShort(this.width);
  this.writeShort(this.height);

  // packed fields
  this.writeByte(
    0x80 | // 1 : global color table flag = 1 (gct used)
    0x70 | // 2-4 : color resolution = 7
    0x00 | // 5 : gct sort flag = 0
    this.palSize // 6-8 : gct size
  );

  this.writeByte(0); // background color index
  this.writeByte(0); // pixel aspect ratio - assume 1:1
};

/*
  Writes Netscape application extension to define repeat count.
*/
GIFEncoder.prototype.writeNetscapeExt = function() {
  this.writeByte(0x21); // extension introducer
  this.writeByte(0xff); // app extension label
  this.writeByte(11); // block size
  this.writeUTFBytes('NETSCAPE2.0'); // app id + auth code
  this.writeByte(3); // sub-block size
  this.writeByte(1); // loop sub-block id
  this.writeShort(this.repeat); // loop count (extra iterations, 0=repeat forever)
  this.writeByte(0); // block terminator
};

/*
  Writes color table
*/
GIFEncoder.prototype.writePalette = function() {
  this.writeBytes(this.colorTab);
  var n = (3 * 256) - this.colorTab.length;
  for (var i = 0; i < n; i++)
    this.writeByte(0);
};

GIFEncoder.prototype.writeShort = function(pValue) {
  this.writeByte(pValue & 0xFF);
  this.writeByte((pValue >> 8) & 0xFF);
};

/*
  Encodes and writes pixel data
*/
GIFEncoder.prototype.writePixels = function() {
  var enc = new LZWEncoder(this.width, this.height, this.indexedPixels, this.colorDepth);
  enc.encode(this);
};

/*
  Retrieves the GIF stream
*/
GIFEncoder.prototype.stream = function() {
  return this;
};

GIFEncoder.ByteCapacitor = ByteCapacitor;

module.exports = GIFEncoder;

}).call(this,require("buffer").Buffer)
},{"./LZWEncoder.js":115,"./TypedNeuQuant.js":116,"assert":9,"buffer":46,"events":95,"readable-stream":123,"util":1001}],115:[function(require,module,exports){
/*
  LZWEncoder.js

  Authors
  Kevin Weiner (original Java version - kweiner@fmsware.com)
  Thibault Imbert (AS3 version - bytearray.org)
  Johan Nordberg (JS version - code@johan-nordberg.com)

  Acknowledgements
  GIFCOMPR.C - GIF Image compression routines
  Lempel-Ziv compression based on 'compress'. GIF modifications by
  David Rowley (mgardi@watdcsu.waterloo.edu)
  GIF Image compression - modified 'compress'
  Based on: compress.c - File compression ala IEEE Computer, June 1984.
  By Authors: Spencer W. Thomas (decvax!harpo!utah-cs!utah-gr!thomas)
  Jim McKie (decvax!mcvax!jim)
  Steve Davies (decvax!vax135!petsd!peora!srd)
  Ken Turkowski (decvax!decwrl!turtlevax!ken)
  James A. Woods (decvax!ihnp4!ames!jaw)
  Joe Orost (decvax!vax135!petsd!joe)
*/

var EOF = -1;
var BITS = 12;
var HSIZE = 5003; // 80% occupancy
var masks = [0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F,
             0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF,
             0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF];

function LZWEncoder(width, height, pixels, colorDepth) {
  var initCodeSize = Math.max(2, colorDepth);

  var accum = new Uint8Array(256);
  var htab = new Int32Array(HSIZE);
  var codetab = new Int32Array(HSIZE);

  var cur_accum, cur_bits = 0;
  var a_count;
  var free_ent = 0; // first unused entry
  var maxcode;
  var remaining;
  var curPixel;
  var n_bits;

  // block compression parameters -- after all codes are used up,
  // and compression rate changes, start over.
  var clear_flg = false;

  // Algorithm: use open addressing double hashing (no chaining) on the
  // prefix code / next character combination. We do a variant of Knuth's
  // algorithm D (vol. 3, sec. 6.4) along with G. Knott's relatively-prime
  // secondary probe. Here, the modular division first probe is gives way
  // to a faster exclusive-or manipulation. Also do block compression with
  // an adaptive reset, whereby the code table is cleared when the compression
  // ratio decreases, but after the table fills. The variable-length output
  // codes are re-sized at this point, and a special CLEAR code is generated
  // for the decompressor. Late addition: construct the table according to
  // file size for noticeable speed improvement on small files. Please direct
  // questions about this implementation to ames!jaw.
  var g_init_bits, ClearCode, EOFCode;

  // Add a character to the end of the current packet, and if it is 254
  // characters, flush the packet to disk.
  function char_out(c, outs) {
    accum[a_count++] = c;
    if (a_count >= 254) flush_char(outs);
  }

  // Clear out the hash table
  // table clear for block compress
  function cl_block(outs) {
    cl_hash(HSIZE);
    free_ent = ClearCode + 2;
    clear_flg = true;
    output(ClearCode, outs);
  }

  // Reset code table
  function cl_hash(hsize) {
    for (var i = 0; i < hsize; ++i) htab[i] = -1;
  }

  function compress(init_bits, outs) {
    var fcode, c, i, ent, disp, hsize_reg, hshift;

    // Set up the globals: g_init_bits - initial number of bits
    g_init_bits = init_bits;

    // Set up the necessary values
    clear_flg = false;
    n_bits = g_init_bits;
    maxcode = MAXCODE(n_bits);

    ClearCode = 1 << (init_bits - 1);
    EOFCode = ClearCode + 1;
    free_ent = ClearCode + 2;

    a_count = 0; // clear packet

    ent = nextPixel();

    hshift = 0;
    for (fcode = HSIZE; fcode < 65536; fcode *= 2) ++hshift;
    hshift = 8 - hshift; // set hash code range bound
    hsize_reg = HSIZE;
    cl_hash(hsize_reg); // clear hash table

    output(ClearCode, outs);

    outer_loop: while ((c = nextPixel()) != EOF) {
      fcode = (c << BITS) + ent;
      i = (c << hshift) ^ ent; // xor hashing
      if (htab[i] === fcode) {
        ent = codetab[i];
        continue;
      } else if (htab[i] >= 0) { // non-empty slot
        disp = hsize_reg - i; // secondary hash (after G. Knott)
        if (i === 0) disp = 1;
        do {
          if ((i -= disp) < 0) i += hsize_reg;
          if (htab[i] === fcode) {
            ent = codetab[i];
            continue outer_loop;
          }
        } while (htab[i] >= 0);
      }
      output(ent, outs);
      ent = c;
      if (free_ent < 1 << BITS) {
        codetab[i] = free_ent++; // code -> hashtable
        htab[i] = fcode;
      } else {
        cl_block(outs);
      }
    }

    // Put out the final code.
    output(ent, outs);
    output(EOFCode, outs);
  }

  function encode(outs) {
    outs.writeByte(initCodeSize); // write "initial code size" byte
    remaining = width * height; // reset navigation variables
    curPixel = 0;
    compress(initCodeSize + 1, outs); // compress and write the pixel data
    outs.writeByte(0); // write block terminator
  }

  // Flush the packet to disk, and reset the accumulator
  function flush_char(outs) {
    if (a_count > 0) {
      outs.writeByte(a_count);
      outs.writeBytes(accum, 0, a_count);
      a_count = 0;
    }
  }

  function MAXCODE(n_bits) {
    return (1 << n_bits) - 1;
  }

  // Return the next pixel from the image
  function nextPixel() {
    if (remaining === 0) return EOF;
    --remaining;
    var pix = pixels[curPixel++];
    return pix & 0xff;
  }

  function output(code, outs) {
    cur_accum &= masks[cur_bits];

    if (cur_bits > 0) cur_accum |= (code << cur_bits);
    else cur_accum = code;

    cur_bits += n_bits;

    while (cur_bits >= 8) {
      char_out((cur_accum & 0xff), outs);
      cur_accum >>= 8;
      cur_bits -= 8;
    }

    // If the next entry is going to be too big for the code size,
    // then increase it, if possible.
    if (free_ent > maxcode || clear_flg) {
      if (clear_flg) {
        maxcode = MAXCODE(n_bits = g_init_bits);
        clear_flg = false;
      } else {
        ++n_bits;
        if (n_bits == BITS) maxcode = 1 << BITS;
        else maxcode = MAXCODE(n_bits);
      }
    }

    if (code == EOFCode) {
      // At EOF, write the rest of the buffer.
      while (cur_bits > 0) {
        char_out((cur_accum & 0xff), outs);
        cur_accum >>= 8;
        cur_bits -= 8;
      }
      flush_char(outs);
    }
  }

  this.encode = encode;
}

module.exports = LZWEncoder;

},{}],116:[function(require,module,exports){
/* NeuQuant Neural-Net Quantization Algorithm
 * ------------------------------------------
 *
 * Copyright (c) 1994 Anthony Dekker
 *
 * NEUQUANT Neural-Net quantization algorithm by Anthony Dekker, 1994.
 * See "Kohonen neural networks for optimal colour quantization"
 * in "Network: Computation in Neural Systems" Vol. 5 (1994) pp 351-367.
 * for a discussion of the algorithm.
 * See also  http://members.ozemail.com.au/~dekker/NEUQUANT.HTML
 *
 * Any party obtaining a copy of these files from the author, directly or
 * indirectly, is granted, free of charge, a full and unrestricted irrevocable,
 * world-wide, paid up, royalty-free, nonexclusive right and license to deal
 * in this software and documentation files (the "Software"), including without
 * limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons who receive
 * copies from any such party to do so, with the only requirement being
 * that this copyright notice remain intact.
 *
 * (JavaScript port 2012 by Johan Nordberg)
 */

var ncycles = 100; // number of learning cycles
var netsize = 256; // number of colors used
var maxnetpos = netsize - 1;

// defs for freq and bias
var netbiasshift = 4; // bias for colour values
var intbiasshift = 16; // bias for fractions
var intbias = (1 << intbiasshift);
var gammashift = 10;
var gamma = (1 << gammashift);
var betashift = 10;
var beta = (intbias >> betashift); /* beta = 1/1024 */
var betagamma = (intbias << (gammashift - betashift));

// defs for decreasing radius factor
var initrad = (netsize >> 3); // for 256 cols, radius starts
var radiusbiasshift = 6; // at 32.0 biased by 6 bits
var radiusbias = (1 << radiusbiasshift);
var initradius = (initrad * radiusbias); //and decreases by a
var radiusdec = 30; // factor of 1/30 each cycle

// defs for decreasing alpha factor
var alphabiasshift = 10; // alpha starts at 1.0
var initalpha = (1 << alphabiasshift);
var alphadec; // biased by 10 bits

/* radbias and alpharadbias used for radpower calculation */
var radbiasshift = 8;
var radbias = (1 << radbiasshift);
var alpharadbshift = (alphabiasshift + radbiasshift);
var alpharadbias = (1 << alpharadbshift);

// four primes near 500 - assume no image has a length so large that it is
// divisible by all four primes
var prime1 = 499;
var prime2 = 491;
var prime3 = 487;
var prime4 = 503;
var minpicturebytes = (3 * prime4);

/*
  Constructor: NeuQuant

  Arguments:

  pixels - array of pixels in RGB format
  samplefac - sampling factor 1 to 30 where lower is better quality

  >
  > pixels = [r, g, b, r, g, b, r, g, b, ..]
  >
*/
function NeuQuant(pixels, samplefac) {
  var network; // int[netsize][4]
  var netindex; // for network lookup - really 256

  // bias and freq arrays for learning
  var bias;
  var freq;
  var radpower;

  /*
    Private Method: init

    sets up arrays
  */
  function init() {
    network = [];
    netindex = new Int32Array(256);
    bias = new Int32Array(netsize);
    freq = new Int32Array(netsize);
    radpower = new Int32Array(netsize >> 3);

    var i, v;
    for (i = 0; i < netsize; i++) {
      v = (i << (netbiasshift + 8)) / netsize;
      network[i] = new Float64Array([v, v, v, 0]);
      //network[i] = [v, v, v, 0]
      freq[i] = intbias / netsize;
      bias[i] = 0;
    }
  }

  /*
    Private Method: unbiasnet

    unbiases network to give byte values 0..255 and record position i to prepare for sort
  */
  function unbiasnet() {
    for (var i = 0; i < netsize; i++) {
      network[i][0] >>= netbiasshift;
      network[i][1] >>= netbiasshift;
      network[i][2] >>= netbiasshift;
      network[i][3] = i; // record color number
    }
  }

  /*
    Private Method: altersingle

    moves neuron *i* towards biased (b,g,r) by factor *alpha*
  */
  function altersingle(alpha, i, b, g, r) {
    network[i][0] -= (alpha * (network[i][0] - b)) / initalpha;
    network[i][1] -= (alpha * (network[i][1] - g)) / initalpha;
    network[i][2] -= (alpha * (network[i][2] - r)) / initalpha;
  }

  /*
    Private Method: alterneigh

    moves neurons in *radius* around index *i* towards biased (b,g,r) by factor *alpha*
  */
  function alterneigh(radius, i, b, g, r) {
    var lo = Math.abs(i - radius);
    var hi = Math.min(i + radius, netsize);

    var j = i + 1;
    var k = i - 1;
    var m = 1;

    var p, a;
    while ((j < hi) || (k > lo)) {
      a = radpower[m++];

      if (j < hi) {
        p = network[j++];
        p[0] -= (a * (p[0] - b)) / alpharadbias;
        p[1] -= (a * (p[1] - g)) / alpharadbias;
        p[2] -= (a * (p[2] - r)) / alpharadbias;
      }

      if (k > lo) {
        p = network[k--];
        p[0] -= (a * (p[0] - b)) / alpharadbias;
        p[1] -= (a * (p[1] - g)) / alpharadbias;
        p[2] -= (a * (p[2] - r)) / alpharadbias;
      }
    }
  }

  /*
    Private Method: contest

    searches for biased BGR values
  */
  function contest(b, g, r) {
    /*
      finds closest neuron (min dist) and updates freq
      finds best neuron (min dist-bias) and returns position
      for frequently chosen neurons, freq[i] is high and bias[i] is negative
      bias[i] = gamma * ((1 / netsize) - freq[i])
    */

    var bestd = ~(1 << 31);
    var bestbiasd = bestd;
    var bestpos = -1;
    var bestbiaspos = bestpos;

    var i, n, dist, biasdist, betafreq;
    for (i = 0; i < netsize; i++) {
      n = network[i];

      dist = Math.abs(n[0] - b) + Math.abs(n[1] - g) + Math.abs(n[2] - r);
      if (dist < bestd) {
        bestd = dist;
        bestpos = i;
      }

      biasdist = dist - ((bias[i]) >> (intbiasshift - netbiasshift));
      if (biasdist < bestbiasd) {
        bestbiasd = biasdist;
        bestbiaspos = i;
      }

      betafreq = (freq[i] >> betashift);
      freq[i] -= betafreq;
      bias[i] += (betafreq << gammashift);
    }

    freq[bestpos] += beta;
    bias[bestpos] -= betagamma;

    return bestbiaspos;
  }

  /*
    Private Method: inxbuild

    sorts network and builds netindex[0..255]
  */
  function inxbuild() {
    var i, j, p, q, smallpos, smallval, previouscol = 0, startpos = 0;
    for (i = 0; i < netsize; i++) {
      p = network[i];
      smallpos = i;
      smallval = p[1]; // index on g
      // find smallest in i..netsize-1
      for (j = i + 1; j < netsize; j++) {
        q = network[j];
        if (q[1] < smallval) { // index on g
          smallpos = j;
          smallval = q[1]; // index on g
        }
      }
      q = network[smallpos];
      // swap p (i) and q (smallpos) entries
      if (i != smallpos) {
        j = q[0];   q[0] = p[0];   p[0] = j;
        j = q[1];   q[1] = p[1];   p[1] = j;
        j = q[2];   q[2] = p[2];   p[2] = j;
        j = q[3];   q[3] = p[3];   p[3] = j;
      }
      // smallval entry is now in position i

      if (smallval != previouscol) {
        netindex[previouscol] = (startpos + i) >> 1;
        for (j = previouscol + 1; j < smallval; j++)
          netindex[j] = i;
        previouscol = smallval;
        startpos = i;
      }
    }
    netindex[previouscol] = (startpos + maxnetpos) >> 1;
    for (j = previouscol + 1; j < 256; j++)
      netindex[j] = maxnetpos; // really 256
  }

  /*
    Private Method: inxsearch

    searches for BGR values 0..255 and returns a color index
  */
  function inxsearch(b, g, r) {
    var a, p, dist;

    var bestd = 1000; // biggest possible dist is 256*3
    var best = -1;

    var i = netindex[g]; // index on g
    var j = i - 1; // start at netindex[g] and work outwards

    while ((i < netsize) || (j >= 0)) {
      if (i < netsize) {
        p = network[i];
        dist = p[1] - g; // inx key
        if (dist >= bestd) i = netsize; // stop iter
        else {
          i++;
          if (dist < 0) dist = -dist;
          a = p[0] - b; if (a < 0) a = -a;
          dist += a;
          if (dist < bestd) {
            a = p[2] - r; if (a < 0) a = -a;
            dist += a;
            if (dist < bestd) {
              bestd = dist;
              best = p[3];
            }
          }
        }
      }
      if (j >= 0) {
        p = network[j];
        dist = g - p[1]; // inx key - reverse dif
        if (dist >= bestd) j = -1; // stop iter
        else {
          j--;
          if (dist < 0) dist = -dist;
          a = p[0] - b; if (a < 0) a = -a;
          dist += a;
          if (dist < bestd) {
            a = p[2] - r; if (a < 0) a = -a;
            dist += a;
            if (dist < bestd) {
              bestd = dist;
              best = p[3];
            }
          }
        }
      }
    }

    return best;
  }

  /*
    Private Method: learn

    "Main Learning Loop"
  */
  function learn() {
    var i;

    var lengthcount = pixels.length;
    var alphadec = 30 + ((samplefac - 1) / 3);
    var samplepixels = lengthcount / (3 * samplefac);
    var delta = ~~(samplepixels / ncycles);
    var alpha = initalpha;
    var radius = initradius;

    var rad = radius >> radiusbiasshift;

    if (rad <= 1) rad = 0;
    for (i = 0; i < rad; i++)
      radpower[i] = alpha * (((rad * rad - i * i) * radbias) / (rad * rad));

    var step;
    if (lengthcount < minpicturebytes) {
      samplefac = 1;
      step = 3;
    } else if ((lengthcount % prime1) !== 0) {
      step = 3 * prime1;
    } else if ((lengthcount % prime2) !== 0) {
      step = 3 * prime2;
    } else if ((lengthcount % prime3) !== 0)  {
      step = 3 * prime3;
    } else {
      step = 3 * prime4;
    }

    var b, g, r, j;
    var pix = 0; // current pixel

    i = 0;
    while (i < samplepixels) {
      b = (pixels[pix] & 0xff) << netbiasshift;
      g = (pixels[pix + 1] & 0xff) << netbiasshift;
      r = (pixels[pix + 2] & 0xff) << netbiasshift;

      j = contest(b, g, r);

      altersingle(alpha, j, b, g, r);
      if (rad !== 0) alterneigh(rad, j, b, g, r); // alter neighbours

      pix += step;
      if (pix >= lengthcount) pix -= lengthcount;

      i++;

      if (delta === 0) delta = 1;
      if (i % delta === 0) {
        alpha -= alpha / alphadec;
        radius -= radius / radiusdec;
        rad = radius >> radiusbiasshift;

        if (rad <= 1) rad = 0;
        for (j = 0; j < rad; j++)
          radpower[j] = alpha * (((rad * rad - j * j) * radbias) / (rad * rad));
      }
    }
  }

  /*
    Method: buildColormap

    1. initializes network
    2. trains it
    3. removes misconceptions
    4. builds colorindex
  */
  function buildColormap() {
    init();
    learn();
    unbiasnet();
    inxbuild();
  }
  this.buildColormap = buildColormap;

  /*
    Method: getColormap

    builds colormap from the index

    returns array in the format:

    >
    > [r, g, b, r, g, b, r, g, b, ..]
    >
  */
  function getColormap() {
    var map = [];
    var index = [];

    for (var i = 0; i < netsize; i++)
      index[network[i][3]] = i;

    var k = 0;
    for (var l = 0; l < netsize; l++) {
      var j = index[l];
      map[k++] = (network[j][0]);
      map[k++] = (network[j][1]);
      map[k++] = (network[j][2]);
    }
    return map;
  }
  this.getColormap = getColormap;

  /*
    Method: lookupRGB

    looks for the closest *r*, *g*, *b* color in the map and
    returns its index
  */
  this.lookupRGB = inxsearch;
}

module.exports = NeuQuant;

},{}],117:[function(require,module,exports){
arguments[4][67][0].apply(exports,arguments)
},{"dup":67}],118:[function(require,module,exports){
arguments[4][68][0].apply(exports,arguments)
},{"./_stream_readable":120,"./_stream_writable":122,"_process":923,"core-util-is":78,"dup":68,"inherits":266}],119:[function(require,module,exports){
arguments[4][69][0].apply(exports,arguments)
},{"./_stream_transform":121,"core-util-is":78,"dup":69,"inherits":266}],120:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events').EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require('stream');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var StringDecoder;


/*<replacement>*/
var debug = require('util');
if (debug && debug.debuglog) {
  debug = debug.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/


util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  var Duplex = require('./_stream_duplex');

  options = options || {};

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var defaultHwm = options.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;


  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex)
    this.objectMode = this.objectMode || !!options.readableObjectMode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  var Duplex = require('./_stream_duplex');

  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (util.isString(chunk) && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (util.isNullOrUndefined(chunk)) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      if (!addToFront)
        state.reading = false;

      // if we want the data now, just emit it.
      if (state.flowing && state.length === 0 && !state.sync) {
        stream.emit('data', chunk);
        stream.read(0);
      } else {
        // update the buffer info.
        state.length += state.objectMode ? 1 : chunk.length;
        if (addToFront)
          state.buffer.unshift(chunk);
        else
          state.buffer.push(chunk);

        if (state.needReadable)
          emitReadable(stream);
      }

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (isNaN(n) || util.isNull(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  debug('read', n);
  var state = this._readableState;
  var nOrig = n;

  if (!util.isNumber(n) || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended)
      endReadable(this);
    else
      emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0)
      endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  }

  if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read pushed data synchronously, then `reading` will be false,
  // and we need to re-evaluate how much data we can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  var ret;
  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (util.isNull(ret)) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we tried to read() past the EOF, then emit end on the next tick.
  if (nOrig !== n && state.ended && state.length === 0)
    endReadable(this);

  if (!util.isNull(ret))
    this.emit('data', ret);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!util.isBuffer(chunk) &&
      !util.isString(chunk) &&
      !util.isNullOrUndefined(chunk) &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync)
      process.nextTick(function() {
        emitReadable_(stream);
      });
    else
      emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    debug('onunpipe');
    if (readable === src) {
      cleanup();
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);
    src.removeListener('data', ondata);

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain &&
        (!dest._writableState || dest._writableState.needDrain))
      ondrain();
  }

  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    var ret = dest.write(chunk);
    if (false === ret) {
      debug('false write response, pause',
            src._readableState.awaitDrain);
      src._readableState.awaitDrain++;
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain)
      state.awaitDrain--;
    if (state.awaitDrain === 0 && EE.listenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  // If listening to data, and it has not explicitly been paused,
  // then call resume to start the flow of data on the next tick.
  if (ev === 'data' && false !== this._readableState.flowing) {
    this.resume();
  }

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        var self = this;
        process.nextTick(function() {
          debug('readable nexttick read 0');
          self.read(0);
        });
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    if (!state.reading) {
      debug('resume read 0');
      this.read(0);
    }
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    process.nextTick(function() {
      resume_(stream, state);
    });
  }
}

function resume_(stream, state) {
  state.resumeScheduled = false;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading)
    stream.read(0);
}

Readable.prototype.pause = function() {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  if (state.flowing) {
    do {
      var chunk = stream.read();
    } while (null !== chunk && state.flowing);
  }
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    debug('wrapped data');
    if (state.decoder)
      chunk = state.decoder.write(chunk);
    if (!chunk || !state.objectMode && !chunk.length)
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (util.isFunction(stream[i]) && util.isUndefined(this[i])) {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};



// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0)
    throw new Error('endReadable called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    process.nextTick(function() {
      // Check that we didn't get one last unshift.
      if (!state.endEmitted && state.length === 0) {
        state.endEmitted = true;
        stream.readable = false;
        stream.emit('end');
      }
    });
  }
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf (xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}

}).call(this,require('_process'))
},{"./_stream_duplex":118,"_process":923,"buffer":46,"core-util-is":78,"events":95,"inherits":266,"isarray":117,"stream":978,"string_decoder/":979,"util":43}],121:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.


// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);


function TransformState(options, stream) {
  this.afterTransform = function(er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb)
    return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (!util.isNullOrUndefined(data))
    stream.push(data);

  if (cb)
    cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}


function Transform(options) {
  if (!(this instanceof Transform))
    return new Transform(options);

  Duplex.call(this, options);

  this._transformState = new TransformState(options, this);

  // when the writable side finishes, then flush out anything remaining.
  var stream = this;

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  this.once('prefinish', function() {
    if (util.isFunction(this._flush))
      this._flush(function(er) {
        done(stream, er);
      });
    else
      done(stream);
  });
}

Transform.prototype.push = function(chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
  throw new Error('not implemented');
};

Transform.prototype._write = function(chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform ||
        rs.needReadable ||
        rs.length < rs.highWaterMark)
      this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
  var ts = this._transformState;

  if (!util.isNull(ts.writechunk) && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};


function done(stream, er) {
  if (er)
    return stream.emit('error', er);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var ts = stream._transformState;

  if (ws.length)
    throw new Error('calling transform done when ws.length != 0');

  if (ts.transforming)
    throw new Error('calling transform done when still transforming');

  return stream.push(null);
}

},{"./_stream_duplex":118,"core-util-is":78,"inherits":266}],122:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.

module.exports = Writable;

/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Stream = require('stream');

util.inherits(Writable, Stream);

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
}

function WritableState(options, stream) {
  var Duplex = require('./_stream_duplex');

  options = options || {};

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var defaultHwm = options.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex)
    this.objectMode = this.objectMode || !!options.writableObjectMode;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function(er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.buffer = [];

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

function Writable(options) {
  var Duplex = require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
  this.emit('error', new Error('Cannot pipe. Not readable.'));
};


function writeAfterEnd(stream, state, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  process.nextTick(function() {
    cb(er);
  });
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  if (!util.isBuffer(chunk) &&
      !util.isString(chunk) &&
      !util.isNullOrUndefined(chunk) &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    process.nextTick(function() {
      cb(er);
    });
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (util.isFunction(encoding)) {
    cb = encoding;
    encoding = null;
  }

  if (util.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (!util.isFunction(cb))
    cb = function() {};

  if (state.ended)
    writeAfterEnd(this, state, cb);
  else if (validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function() {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function() {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing &&
        !state.corked &&
        !state.finished &&
        !state.bufferProcessing &&
        state.buffer.length)
      clearBuffer(this, state);
  }
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      util.isString(chunk)) {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);
  if (util.isBuffer(chunk))
    encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret)
    state.needDrain = true;

  if (state.writing || state.corked)
    state.buffer.push(new WriteReq(chunk, encoding, cb));
  else
    doWrite(stream, state, false, len, chunk, encoding, cb);

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev)
    stream._writev(chunk, state.onwrite);
  else
    stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  if (sync)
    process.nextTick(function() {
      state.pendingcb--;
      cb(er);
    });
  else {
    state.pendingcb--;
    cb(er);
  }

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er)
    onwriteError(stream, state, sync, er, cb);
  else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(stream, state);

    if (!finished &&
        !state.corked &&
        !state.bufferProcessing &&
        state.buffer.length) {
      clearBuffer(stream, state);
    }

    if (sync) {
      process.nextTick(function() {
        afterWrite(stream, state, finished, cb);
      });
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}


// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;

  if (stream._writev && state.buffer.length > 1) {
    // Fast case, write everything using _writev()
    var cbs = [];
    for (var c = 0; c < state.buffer.length; c++)
      cbs.push(state.buffer[c].callback);

    // count the one we are adding, as well.
    // TODO(isaacs) clean this up
    state.pendingcb++;
    doWrite(stream, state, true, state.length, state.buffer, '', function(err) {
      for (var i = 0; i < cbs.length; i++) {
        state.pendingcb--;
        cbs[i](err);
      }
    });

    // Clear buffer
    state.buffer = [];
  } else {
    // Slow case, write chunks one-by-one
    for (var c = 0; c < state.buffer.length; c++) {
      var entry = state.buffer[c];
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);

      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        c++;
        break;
      }
    }

    if (c < state.buffer.length)
      state.buffer = state.buffer.slice(c);
    else
      state.buffer.length = 0;
  }

  state.bufferProcessing = false;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));

};

Writable.prototype._writev = null;

Writable.prototype.end = function(chunk, encoding, cb) {
  var state = this._writableState;

  if (util.isFunction(chunk)) {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (util.isFunction(encoding)) {
    cb = encoding;
    encoding = null;
  }

  if (!util.isNullOrUndefined(chunk))
    this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(stream, state) {
  return (state.ending &&
          state.length === 0 &&
          !state.finished &&
          !state.writing);
}

function prefinish(stream, state) {
  if (!state.prefinished) {
    state.prefinished = true;
    stream.emit('prefinish');
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(stream, state);
  if (need) {
    if (state.pendingcb === 0) {
      prefinish(stream, state);
      state.finished = true;
      stream.emit('finish');
    } else
      prefinish(stream, state);
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      process.nextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

}).call(this,require('_process'))
},{"./_stream_duplex":118,"_process":923,"buffer":46,"core-util-is":78,"inherits":266,"stream":978}],123:[function(require,module,exports){
(function (process){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = require('stream');
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
if (!process.browser && process.env.READABLE_STREAM === 'disable') {
  module.exports = require('stream');
}

}).call(this,require('_process'))
},{"./lib/_stream_duplex.js":118,"./lib/_stream_passthrough.js":119,"./lib/_stream_readable.js":120,"./lib/_stream_transform.js":121,"./lib/_stream_writable.js":122,"_process":923,"stream":978}],124:[function(require,module,exports){
'use strict'

module.exports = createAxes

var createText        = require('./lib/text.js')
var createLines       = require('./lib/lines.js')
var createBackground  = require('./lib/background.js')
var getCubeProperties = require('./lib/cube.js')
var Ticks             = require('./lib/ticks.js')

var identity = new Float32Array([
  1, 0, 0, 0,
  0, 1, 0, 0,
  0, 0, 1, 0,
  0, 0, 0, 1])

function copyVec3(a, b) {
  a[0] = b[0]
  a[1] = b[1]
  a[2] = b[2]
  return a
}

function Axes(gl) {
  this.gl             = gl

  this.pixelRatio     = 1

  this.bounds         = [ [-10, -10, -10],
                          [ 10,  10,  10] ]
  this.ticks          = [ [], [], [] ]
  this.autoTicks      = true
  this.tickSpacing    = [ 1, 1, 1 ]

  this.tickEnable     = [ true, true, true ]
  this.tickFont       = [ 'sans-serif', 'sans-serif', 'sans-serif' ]
  this.tickSize       = [ 12, 12, 12 ]
  this.tickAngle      = [ 0, 0, 0 ]
  this.tickColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
  this.tickPad        = [ 10, 10, 10 ]

  this.lastCubeProps  = {
    cubeEdges: [0,0,0],
    axis:      [0,0,0]
  }

  this.labels         = [ 'x', 'y', 'z' ]
  this.labelEnable    = [ true, true, true ]
  this.labelFont      = 'sans-serif'
  this.labelSize      = [ 20, 20, 20 ]
  this.labelAngle     = [ 0, 0, 0 ]
  this.labelColor     = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
  this.labelPad       = [ 10, 10, 10 ]

  this.lineEnable     = [ true, true, true ]
  this.lineMirror     = [ false, false, false ]
  this.lineWidth      = [ 1, 1, 1 ]
  this.lineColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]

  this.lineTickEnable = [ true, true, true ]
  this.lineTickMirror = [ false, false, false ]
  this.lineTickLength = [ 0, 0, 0 ]
  this.lineTickWidth  = [ 1, 1, 1 ]
  this.lineTickColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]

  this.gridEnable     = [ true, true, true ]
  this.gridWidth      = [ 1, 1, 1 ]
  this.gridColor      = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]

  this.zeroEnable     = [ true, true, true ]
  this.zeroLineColor  = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]
  this.zeroLineWidth  = [ 2, 2, 2 ]

  this.backgroundEnable = [ false, false, false ]
  this.backgroundColor  = [ [0.8, 0.8, 0.8, 0.5],
                            [0.8, 0.8, 0.8, 0.5],
                            [0.8, 0.8, 0.8, 0.5] ]

  this._firstInit = true
  this._text  = null
  this._lines = null
  this._background = createBackground(gl)
}

var proto = Axes.prototype

proto.update = function(options) {
  options = options || {}

  //Option parsing helper functions
  function parseOption(nest, cons, name) {
    if(name in options) {
      var opt = options[name]
      var prev = this[name]
      var next
      if(nest ? (Array.isArray(opt) && Array.isArray(opt[0])) :
                 Array.isArray(opt) ) {
        this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]
      } else {
        this[name] = next = [ cons(opt), cons(opt), cons(opt) ]
      }
      for(var i=0; i<3; ++i) {
        if(next[i] !== prev[i]) {
          return true
        }
      }
    }
    return false
  }

  var NUMBER  = parseOption.bind(this, false, Number)
  var BOOLEAN = parseOption.bind(this, false, Boolean)
  var STRING  = parseOption.bind(this, false, String)
  var COLOR   = parseOption.bind(this, true, function(v) {
    if(Array.isArray(v)) {
      if(v.length === 3) {
        return [ +v[0], +v[1], +v[2], 1.0 ]
      } else if(v.length === 4) {
        return [ +v[0], +v[1], +v[2], +v[3] ]
      }
    }
    return [ 0, 0, 0, 1 ]
  })

  //Tick marks and bounds
  var nextTicks
  var ticksUpdate   = false
  var boundsChanged = false
  if('bounds' in options) {
    var bounds = options.bounds
i_loop:
    for(var i=0; i<2; ++i) {
      for(var j=0; j<3; ++j) {
        if(bounds[i][j] !== this.bounds[i][j]) {
          boundsChanged = true
        }
        this.bounds[i][j] = bounds[i][j]
      }
    }
  }
  if('ticks' in options) {
    nextTicks      = options.ticks
    ticksUpdate    = true
    this.autoTicks = false
    for(var i=0; i<3; ++i) {
      this.tickSpacing[i] = 0.0
    }
  } else if(NUMBER('tickSpacing')) {
    this.autoTicks  = true
    boundsChanged   = true
  }

  if(this._firstInit) {
    if(!('ticks' in options || 'tickSpacing' in options)) {
      this.autoTicks = true
    }

    //Force tick recomputation on first update
    boundsChanged   = true
    ticksUpdate     = true
    this._firstInit = false
  }

  if(boundsChanged && this.autoTicks) {
    nextTicks = Ticks.create(this.bounds, this.tickSpacing)
    ticksUpdate = true
  }

  //Compare next ticks to previous ticks, only update if needed
  if(ticksUpdate) {
    for(var i=0; i<3; ++i) {
      nextTicks[i].sort(function(a,b) {
        return a.x-b.x
      })
    }
    if(Ticks.equal(nextTicks, this.ticks)) {
      ticksUpdate = false
    } else {
      this.ticks = nextTicks
    }
  }

  //Parse tick properties
  BOOLEAN('tickEnable')
  if(STRING('tickFont')) {
    ticksUpdate = true  //If font changes, must rebuild vbo
  }
  NUMBER('tickSize')
  NUMBER('tickAngle')
  NUMBER('tickPad')
  COLOR('tickColor')

  //Axis labels
  var labelUpdate = STRING('labels')
  if(STRING('labelFont')) {
    labelUpdate = true
  }
  BOOLEAN('labelEnable')
  NUMBER('labelSize')
  NUMBER('labelPad')
  COLOR('labelColor')

  //Axis lines
  BOOLEAN('lineEnable')
  BOOLEAN('lineMirror')
  NUMBER('lineWidth')
  COLOR('lineColor')

  //Axis line ticks
  BOOLEAN('lineTickEnable')
  BOOLEAN('lineTickMirror')
  NUMBER('lineTickLength')
  NUMBER('lineTickWidth')
  COLOR('lineTickColor')

  //Grid lines
  BOOLEAN('gridEnable')
  NUMBER('gridWidth')
  COLOR('gridColor')

  //Zero line
  BOOLEAN('zeroEnable')
  COLOR('zeroLineColor')
  NUMBER('zeroLineWidth')

  //Background
  BOOLEAN('backgroundEnable')
  COLOR('backgroundColor')

  //Update text if necessary
  if(!this._text) {
    this._text = createText(
      this.gl,
      this.bounds,
      this.labels,
      this.labelFont,
      this.ticks,
      this.tickFont)
  } else if(this._text && (labelUpdate || ticksUpdate)) {
    this._text.update(
      this.bounds,
      this.labels,
      this.labelFont,
      this.ticks,
      this.tickFont)
  }

  //Update lines if necessary
  if(this._lines && ticksUpdate) {
    this._lines.dispose()
    this._lines = null
  }
  if(!this._lines) {
    this._lines = createLines(this.gl, this.bounds, this.ticks)
  }
}

function OffsetInfo() {
  this.primalOffset = [0,0,0]
  this.primalMinor  = [0,0,0]
  this.mirrorOffset = [0,0,0]
  this.mirrorMinor  = [0,0,0]
}

var LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]

function computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {
  var primalOffset = result.primalOffset
  var primalMinor  = result.primalMinor
  var dualOffset   = result.mirrorOffset
  var dualMinor    = result.mirrorMinor
  var e = cubeEdges[i]

  //Calculate offsets
  for(var j=0; j<3; ++j) {
    if(i === j) {
      continue
    }
    var a = primalOffset,
        b = dualOffset,
        c = primalMinor,
        d = dualMinor
    if(e & (1<<j)) {
      a = dualOffset
      b = primalOffset
      c = dualMinor
      d = primalMinor
    }
    a[j] = bounds[0][j]
    b[j] = bounds[1][j]
    if(cubeAxis[j] > 0) {
      c[j] = -1
      d[j] = 0
    } else {
      c[j] = 0
      d[j] = +1
    }
  }
}

var CUBE_ENABLE = [0,0,0]
var DEFAULT_PARAMS = {
  model:      identity,
  view:       identity,
  projection: identity
}

proto.isOpaque = function() {
  return true
}

proto.isTransparent = function() {
  return false
}

proto.drawTransparent = function(params) {}


var PRIMAL_MINOR  = [0,0,0]
var MIRROR_MINOR  = [0,0,0]
var PRIMAL_OFFSET = [0,0,0]

proto.draw = function(params) {
  params = params || DEFAULT_PARAMS

  var gl = this.gl

  //Geometry for camera and axes
  var model       = params.model || identity
  var view        = params.view || identity
  var projection  = params.projection || identity
  var bounds      = this.bounds

  //Unpack axis info
  var cubeParams  = getCubeProperties(model, view, projection, bounds)
  var cubeEdges   = cubeParams.cubeEdges
  var cubeAxis    = cubeParams.axis

  var cx = view[12]
  var cy = view[13]
  var cz = view[14]
  var cw = view[15]

  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight

  for(var i=0; i<3; ++i) {
    this.lastCubeProps.cubeEdges[i] = cubeEdges[i]
    this.lastCubeProps.axis[i] = cubeAxis[i]
  }

  //Compute axis info
  var lineOffset  = LINE_OFFSET
  for(var i=0; i<3; ++i) {
    computeLineOffset(
      LINE_OFFSET[i],
      i,
      this.bounds,
      cubeEdges,
      cubeAxis)
  }

  //Set up state parameters
  var gl = this.gl

  //Draw background first
  var cubeEnable = CUBE_ENABLE
  for(var i=0; i<3; ++i) {
    if(this.backgroundEnable[i]) {
      cubeEnable[i] = cubeAxis[i]
    } else {
      cubeEnable[i] = 0
    }
  }

  this._background.draw(
    model,
    view,
    projection,
    bounds,
    cubeEnable,
    this.backgroundColor)

  //Draw lines
  this._lines.bind(
    model,
    view,
    projection,
    this)

  //First draw grid lines and zero lines
  for(var i=0; i<3; ++i) {
    var x = [0,0,0]
    if(cubeAxis[i] > 0) {
      x[i] = bounds[1][i]
    } else {
      x[i] = bounds[0][i]
    }

    //Draw grid lines
    for(var j=0; j<2; ++j) {
      var u = (i + 1 + j) % 3
      var v = (i + 1 + (j^1)) % 3
      if(this.gridEnable[u]) {
        this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)
      }
    }

    //Draw zero lines (need to do this AFTER all grid lines are drawn)
    for(var j=0; j<2; ++j) {
      var u = (i + 1 + j) % 3
      var v = (i + 1 + (j^1)) % 3
      if(this.zeroEnable[v]) {
        //Check if zero line in bounds
        if(bounds[0][v] <= 0 && bounds[1][v] >= 0) {
          this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)
        }
      }
    }
  }

  //Then draw axis lines and tick marks
  for(var i=0; i<3; ++i) {

    //Draw axis lines
    if(this.lineEnable[i]) {
      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
    }
    if(this.lineMirror[i]) {
      this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)
    }

    //Compute minor axes
    var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)
    var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)
    var tickLength  = this.lineTickLength
    var op = 0
    for(var j=0; j<3; ++j) {
      var scaleFactor = pixelScaleF / model[5*j]
      primalMinor[j] *= tickLength[j] * scaleFactor
      mirrorMinor[j] *= tickLength[j] * scaleFactor
    }

    //Draw axis line ticks
    if(this.lineTickEnable[i]) {
      this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
    }
    if(this.lineTickMirror[i]) {
      this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)
    }
  }

  //Draw text sprites
  this._text.bind(
    model,
    view,
    projection,
    this.pixelRatio)

  for(var i=0; i<3; ++i) {

    var minor      = lineOffset[i].primalMinor
    var offset     = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)

    for(var j=0; j<3; ++j) {
      if(this.lineTickEnable[i]) {
        offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0)  / model[5*j]
      }
    }

    //Draw tick text
    if(this.tickEnable[i]) {

      //Add tick padding
      for(var j=0; j<3; ++j) {
        offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]
      }

      //Draw axis
      this._text.drawTicks(
        i,
        this.tickSize[i],
        this.tickAngle[i],
        offset,
        this.tickColor[i])
    }

    //Draw labels
    if(this.labelEnable[i]) {

      //Add label padding
      for(var j=0; j<3; ++j) {
        offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]
      }
      offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])

      //Draw axis
      this._text.drawLabel(
        i,
        this.labelSize[i],
        this.labelAngle[i],
        offset,
        this.labelColor[i])
    }
  }
}

proto.dispose = function() {
  this._text.dispose()
  this._lines.dispose()
  this._background.dispose()
  this._lines = null
  this._text = null
  this._background = null
  this.gl = null
}

function createAxes(gl, options) {
  var axes = new Axes(gl)
  axes.update(options)
  return axes
}

},{"./lib/background.js":125,"./lib/cube.js":126,"./lib/lines.js":127,"./lib/text.js":129,"./lib/ticks.js":130}],125:[function(require,module,exports){
'use strict'

module.exports = createBackgroundCube

var createBuffer = require('gl-buffer')
var createVAO    = require('gl-vao')
var createShader = require('./shaders').bg

function BackgroundCube(gl, buffer, vao, shader) {
  this.gl = gl
  this.buffer = buffer
  this.vao = vao
  this.shader = shader
}

var proto = BackgroundCube.prototype

proto.draw = function(model, view, projection, bounds, enable, colors) {
  var needsBG = false
  for(var i=0; i<3; ++i) {
    needsBG = needsBG || enable[i]
  }
  if(!needsBG) {
    return
  }

  var gl = this.gl

  gl.enable(gl.POLYGON_OFFSET_FILL)
  gl.polygonOffset(1, 2)

  this.shader.bind()
  this.shader.uniforms = {
    model: model,
    view: view,
    projection: projection,
    bounds: bounds,
    enable: enable,
    colors: colors
  }
  this.vao.bind()
  this.vao.draw(this.gl.TRIANGLES, 36)

  gl.disable(gl.POLYGON_OFFSET_FILL)
}

proto.dispose = function() {
  this.vao.dispose()
  this.buffer.dispose()
  this.shader.dispose()
}

function createBackgroundCube(gl) {
  //Create cube vertices
  var vertices = []
  var indices  = []
  var ptr = 0
  for(var d=0; d<3; ++d) {
    var u = (d+1) % 3
    var v = (d+2) % 3
    var x = [0,0,0]
    var c = [0,0,0]
    for(var s=-1; s<=1; s+=2) {
      indices.push(ptr,   ptr+2, ptr+1,
                   ptr+1, ptr+2, ptr+3)
      x[d] = s
      c[d] = s
      for(var i=-1; i<=1; i+=2) {
        x[u] = i
        for(var j=-1; j<=1; j+=2) {
          x[v] = j
          vertices.push(x[0], x[1], x[2],
                        c[0], c[1], c[2])
          ptr += 1
        }
      }
      //Swap u and v
      var tt = u
      u = v
      v = tt
    }
  }

  //Allocate buffer and vertex array
  var buffer = createBuffer(gl, new Float32Array(vertices))
  var elements = createBuffer(gl, new Uint16Array(indices), gl.ELEMENT_ARRAY_BUFFER)
  var vao = createVAO(gl, [
      {
        buffer: buffer,
        type: gl.FLOAT,
        size: 3,
        offset: 0,
        stride: 24
      },
      {
        buffer: buffer,
        type: gl.FLOAT,
        size: 3,
        offset: 12,
        stride: 24
      }
    ], elements)

  //Create shader object
  var shader = createShader(gl)
  shader.attributes.position.location = 0
  shader.attributes.normal.location = 1

  return new BackgroundCube(gl, buffer, vao, shader)
}

},{"./shaders":128,"gl-buffer":132,"gl-vao":243}],126:[function(require,module,exports){
"use strict"

module.exports = getCubeEdges

var bits      = require('bit-twiddle')
var multiply  = require('gl-mat4/multiply')
var invert    = require('gl-mat4/invert')
var splitPoly = require('split-polygon')
var orient    = require('robust-orientation')

var mvp        = new Array(16)
var imvp       = new Array(16)
var pCubeVerts = new Array(8)
var cubeVerts  = new Array(8)
var x          = new Array(3)
var zero3      = [0,0,0]

;(function() {
  for(var i=0; i<8; ++i) {
    pCubeVerts[i] =[1,1,1,1]
    cubeVerts[i] = [1,1,1]
  }
})()


function transformHg(result, x, mat) {
  for(var i=0; i<4; ++i) {
    result[i] = mat[12+i]
    for(var j=0; j<3; ++j) {
      result[i] += x[j]*mat[4*j+i]
    }
  }
}

var FRUSTUM_PLANES = [
  [ 0, 0, 1, 0, 0],
  [ 0, 0,-1, 1, 0],
  [ 0,-1, 0, 1, 0],
  [ 0, 1, 0, 1, 0],
  [-1, 0, 0, 1, 0],
  [ 1, 0, 0, 1, 0]
]

function polygonArea(p) {
  for(var i=0; i<FRUSTUM_PLANES.length; ++i) {
    p = splitPoly.positive(p, FRUSTUM_PLANES[i])
    if(p.length < 3) {
      return 0
    }
  }

  var base = p[0]
  var ax = base[0] / base[3]
  var ay = base[1] / base[3]
  var area = 0.0
  for(var i=1; i+1<p.length; ++i) {
    var b = p[i]
    var c = p[i+1]

    var bx = b[0]/b[3]
    var by = b[1]/b[3]
    var cx = c[0]/c[3]
    var cy = c[1]/c[3]

    var ux = bx - ax
    var uy = by - ay

    var vx = cx - ax
    var vy = cy - ay

    area += Math.abs(ux * vy - uy * vx)
  }

  return area
}

var CUBE_EDGES = [1,1,1]
var CUBE_AXIS  = [0,0,0]
var CUBE_RESULT = {
  cubeEdges: CUBE_EDGES,
  axis: CUBE_AXIS
}

function getCubeEdges(model, view, projection, bounds) {

  //Concatenate matrices
  multiply(mvp, view, model)
  multiply(mvp, projection, mvp)
  
  //First project cube vertices
  var ptr = 0
  for(var i=0; i<2; ++i) {
    x[2] = bounds[i][2]
    for(var j=0; j<2; ++j) {
      x[1] = bounds[j][1]
      for(var k=0; k<2; ++k) {
        x[0] = bounds[k][0]
        transformHg(pCubeVerts[ptr], x, mvp)
        ptr += 1
      }
    }
  }

  //Classify camera against cube faces
  var closest = -1

  for(var i=0; i<8; ++i) {
    var w = pCubeVerts[i][3]
    for(var l=0; l<3; ++l) {
      cubeVerts[i][l] = pCubeVerts[i][l] / w
    }
    if(w < 0) {
      if(closest < 0) {
        closest = i
      } else if(cubeVerts[i][2] < cubeVerts[closest][2]) {
        closest = i
      }
    }    
  }

  if(closest < 0) {
    closest = 0
    for(var d=0; d<3; ++d) {
      var u = (d+2) % 3
      var v = (d+1) % 3
      var o0 = -1
      var o1 = -1
      for(var s=0; s<2; ++s) {
        var f0 = (s<<d)
        var f1 = f0 + (s << u) + ((1-s) << v)
        var f2 = f0 + ((1-s) << u) + (s << v)
        if(orient(cubeVerts[f0], cubeVerts[f1], cubeVerts[f2], zero3) < 0) {
          continue
        }
        if(s) {
          o0 = 1
        } else {
          o1 = 1
        }
      }
      if(o0 < 0 || o1 < 0) {
        if(o1 > o0) {
          closest |= 1<<d
        }
        continue
      } 
      for(var s=0; s<2; ++s) {
        var f0 = (s<<d)
        var f1 = f0 + (s << u) + ((1-s) << v)
        var f2 = f0 + ((1-s) << u) + (s << v)    
        var o = polygonArea([
            pCubeVerts[f0], 
            pCubeVerts[f1], 
            pCubeVerts[f2], 
            pCubeVerts[f0+(1<<u)+(1<<v)]])
        if(s) {
          o0 = o
        } else {
          o1 = o
        }
      }
      if(o1 > o0) {
        closest |= 1<<d
        continue
      }
    }
  }

  var farthest = 7^closest

  //Find lowest vertex which is not closest closest
  var bottom = -1
  for(var i=0; i<8; ++i) {
    if(i === closest || i === farthest) {
      continue
    }
    if(bottom < 0) {
      bottom = i
    } else if(cubeVerts[bottom][1] > cubeVerts[i][1]) {
      bottom = i
    }
  }

  //Find left/right neighbors of bottom vertex
  var left = -1
  for(var i=0; i<3; ++i) {
    var idx = bottom ^ (1<<i)
    if(idx === closest || idx === farthest) {
      continue
    }
    if(left < 0) {
      left = idx
    }
    var v = cubeVerts[idx]
    if(v[0] < cubeVerts[left][0]) {
      left = idx
    }
  }
  var right = -1
  for(var i=0; i<3; ++i) {
    var idx = bottom ^ (1<<i)
    if(idx === closest || idx === farthest || idx === left) {
      continue
    }
    if(right < 0) {
      right = idx
    }
    var v = cubeVerts[idx]
    if(v[0] > cubeVerts[right][0]) {
      right = idx
    }
  }

  //Determine edge axis coordinates
  var cubeEdges = CUBE_EDGES
  cubeEdges[0] = cubeEdges[1] = cubeEdges[2] = 0
  cubeEdges[bits.log2(left^bottom)] = bottom&left
  cubeEdges[bits.log2(bottom^right)] = bottom&right
  var top = right ^ 7
  if(top === closest || top === farthest) {
    top = left ^ 7
    cubeEdges[bits.log2(right^top)] = top&right
  } else {
    cubeEdges[bits.log2(left^top)] = top&left
  }

  //Determine visible faces
  var axis = CUBE_AXIS
  var cutCorner = closest
  for(var d=0; d<3; ++d) {
    if(cutCorner & (1<<d)) {
      axis[d] = -1
    } else {
      axis[d] = 1
    }
  }

  //Return result
  return CUBE_RESULT
}
},{"bit-twiddle":33,"gl-mat4/invert":156,"gl-mat4/multiply":158,"robust-orientation":954,"split-polygon":976}],127:[function(require,module,exports){
'use strict'

module.exports    = createLines

var createBuffer  = require('gl-buffer')
var createVAO     = require('gl-vao')
var createShader  = require('./shaders').line

var MAJOR_AXIS = [0,0,0]
var MINOR_AXIS = [0,0,0]
var SCREEN_AXIS = [0,0,0]
var OFFSET_VEC = [0,0,0]
var SHAPE = [1,1]

function zeroVec(a) {
  a[0] = a[1] = a[2] = 0
  return a
}

function copyVec(a,b) {
  a[0] = b[0]
  a[1] = b[1]
  a[2] = b[2]
  return a
}

function Lines(gl, vertBuffer, vao, shader, tickCount, tickOffset, gridCount, gridOffset) {
  this.gl         = gl
  this.vertBuffer = vertBuffer
  this.vao        = vao
  this.shader     = shader
  this.tickCount  = tickCount
  this.tickOffset = tickOffset
  this.gridCount  = gridCount
  this.gridOffset = gridOffset
}

var proto = Lines.prototype

proto.bind = function(model, view, projection) {
  this.shader.bind()
  this.shader.uniforms.model = model
  this.shader.uniforms.view = view
  this.shader.uniforms.projection = projection

  SHAPE[0] = this.gl.drawingBufferWidth
  SHAPE[1] = this.gl.drawingBufferHeight

  this.shader.uniforms.screenShape = SHAPE
  this.vao.bind()
}

proto.drawAxisLine = function(j, bounds, offset, color, lineWidth) {
  var minorAxis = zeroVec(MINOR_AXIS)
  this.shader.uniforms.majorAxis = MINOR_AXIS

  minorAxis[j] = bounds[1][j] - bounds[0][j]
  this.shader.uniforms.minorAxis = minorAxis

  var noffset = copyVec(OFFSET_VEC, offset)
  noffset[j] += bounds[0][j]
  this.shader.uniforms.offset = noffset

  this.shader.uniforms.lineWidth = lineWidth

  this.shader.uniforms.color = color

  var screenAxis = zeroVec(SCREEN_AXIS)
  screenAxis[(j+2)%3] = 1
  this.shader.uniforms.screenAxis = screenAxis
  this.vao.draw(this.gl.TRIANGLES, 6)

  var screenAxis = zeroVec(SCREEN_AXIS)
  screenAxis[(j+1)%3] = 1
  this.shader.uniforms.screenAxis = screenAxis
  this.vao.draw(this.gl.TRIANGLES, 6)
}

proto.drawAxisTicks = function(j, offset, minorAxis, color, lineWidth) {
  if(!this.tickCount[j]) {
    return
  }

  var majorAxis = zeroVec(MAJOR_AXIS)
  majorAxis[j]  = 1
  this.shader.uniforms.majorAxis = majorAxis
  this.shader.uniforms.offset    = offset
  this.shader.uniforms.minorAxis = minorAxis
  this.shader.uniforms.color     = color
  this.shader.uniforms.lineWidth = lineWidth

  var screenAxis = zeroVec(SCREEN_AXIS)
  screenAxis[j] = 1
  this.shader.uniforms.screenAxis = screenAxis
  this.vao.draw(this.gl.TRIANGLES, this.tickCount[j], this.tickOffset[j])
}


proto.drawGrid = function(i, j, bounds, offset, color, lineWidth) {
  if(!this.gridCount[i]) {
    return
  }

  var minorAxis = zeroVec(MINOR_AXIS)
  minorAxis[j]  = bounds[1][j] - bounds[0][j]
  this.shader.uniforms.minorAxis = minorAxis

  var noffset = copyVec(OFFSET_VEC, offset)
  noffset[j] += bounds[0][j]
  this.shader.uniforms.offset = noffset

  var majorAxis = zeroVec(MAJOR_AXIS)
  majorAxis[i]  = 1
  this.shader.uniforms.majorAxis = majorAxis

  var screenAxis = zeroVec(SCREEN_AXIS)
  screenAxis[i] = 1
  this.shader.uniforms.screenAxis = screenAxis
  this.shader.uniforms.lineWidth = lineWidth

  this.shader.uniforms.color = color
  this.vao.draw(this.gl.TRIANGLES, this.gridCount[i], this.gridOffset[i])
}

proto.drawZero = function(j, i, bounds, offset, color, lineWidth) {
  var minorAxis = zeroVec(MINOR_AXIS)
  this.shader.uniforms.majorAxis = minorAxis

  minorAxis[j] = bounds[1][j] - bounds[0][j]
  this.shader.uniforms.minorAxis = minorAxis

  var noffset = copyVec(OFFSET_VEC, offset)
  noffset[j] += bounds[0][j]
  this.shader.uniforms.offset = noffset

  var screenAxis = zeroVec(SCREEN_AXIS)
  screenAxis[i] = 1
  this.shader.uniforms.screenAxis = screenAxis
  this.shader.uniforms.lineWidth = lineWidth

  this.shader.uniforms.color = color
  this.vao.draw(this.gl.TRIANGLES, 6)
}

proto.dispose = function() {
  this.vao.dispose()
  this.vertBuffer.dispose()
  this.shader.dispose()
}

function createLines(gl, bounds, ticks) {
  var vertices    = []
  var tickOffset  = [0,0,0]
  var tickCount   = [0,0,0]

  //Create grid lines for each axis/direction
  var gridOffset = [0,0,0]
  var gridCount  = [0,0,0]

  //Add zero line
  vertices.push(
    0,0,1,   0,1,1,   0,0,-1,
    0,0,-1,  0,1,1,   0,1,-1)

  for(var i=0; i<3; ++i) {
    //Axis tick marks
    var start = ((vertices.length / 3)|0)
    for(var j=0; j<ticks[i].length; ++j) {
      var x = +ticks[i][j].x
      vertices.push(
        x,0,1,   x,1,1,   x,0,-1,
        x,0,-1,  x,1,1,   x,1,-1)
    }
    var end = ((vertices.length / 3)|0)
    tickOffset[i] = start
    tickCount[i]  = end - start

    //Grid lines
    var start = ((vertices.length / 3)|0)
    for(var k=0; k<ticks[i].length; ++k) {
      var x = +ticks[i][k].x
      vertices.push(
        x,0,1,   x,1,1,   x,0,-1,
        x,0,-1,  x,1,1,   x,1,-1)
    }
    var end = ((vertices.length / 3)|0)
    gridOffset[i] = start
    gridCount[i]  = end - start
  }

  //Create cube VAO
  var vertBuf = createBuffer(gl, new Float32Array(vertices))
  var vao = createVAO(gl, [
    { "buffer": vertBuf,
      "type": gl.FLOAT,
      "size": 3,
      "stride": 0,
      "offset": 0
    }
  ])
  var shader = createShader(gl)
  shader.attributes.position.location = 0
  return new Lines(gl, vertBuf, vao, shader, tickCount, tickOffset, gridCount, gridOffset)
}

},{"./shaders":128,"gl-buffer":132,"gl-vao":243}],128:[function(require,module,exports){
'use strict'


var createShader = require('gl-shader')

var lineVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, majorAxis, minorAxis, screenAxis;\nuniform float lineWidth;\nuniform vec2 screenShape;\n\nvec3 project(vec3 p) {\n  vec4 pp = projection * view * model * vec4(p, 1.0);\n  return pp.xyz / max(pp.w, 0.0001);\n}\n\nvoid main() {\n  vec3 major = position.x * majorAxis;\n  vec3 minor = position.y * minorAxis;\n\n  vec3 vPosition = major + minor + offset;\n  vec3 pPosition = project(vPosition);\n  vec3 offset = project(vPosition + screenAxis * position.z);\n\n  vec2 screen = normalize((offset - pPosition).xy * screenShape) / screenShape;\n\n  gl_Position = vec4(pPosition + vec3(0.5 * screen * lineWidth, 0), 1.0);\n}\n"
var lineFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
exports.line = function(gl) {
  return createShader(gl, lineVert, lineFrag, null, [
    {name: 'position', type: 'vec3'}
  ])
}

var textVert = "#define GLSLIFY 1\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\nuniform vec3 offset, axis;\nuniform float scale, angle, pixelScale;\nuniform vec2 resolution;\n\nvoid main() {  \n  //Compute plane offset\n  vec2 planeCoord = position.xy * pixelScale;\n  mat2 planeXform = scale * mat2(cos(angle), sin(angle),\n                                -sin(angle), cos(angle));\n  vec2 viewOffset = 2.0 * planeXform * planeCoord / resolution;\n\n  //Compute world offset\n  float axisDistance = position.z;\n  vec3 dataPosition = axisDistance * axis + offset;\n  vec4 worldPosition = model * vec4(dataPosition, 1);\n  \n  //Compute clip position\n  vec4 viewPosition = view * worldPosition;\n  vec4 clipPosition = projection * viewPosition;\n  clipPosition /= clipPosition.w;\n\n  //Apply text offset in clip coordinates\n  clipPosition += vec4(viewOffset, 0, 0);\n\n  //Done\n  gl_Position = clipPosition;\n}"
var textFrag = "precision mediump float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = color;\n}"
exports.text = function(gl) {
  return createShader(gl, textVert, textFrag, null, [
    {name: 'position', type: 'vec3'}
  ])
}

var bgVert = "#define GLSLIFY 1\nattribute vec3 position;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection;\nuniform vec3 enable;\nuniform vec3 bounds[2];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  if(dot(normal, enable) > 0.0) {\n    vec3 nPosition = mix(bounds[0], bounds[1], 0.5 * (position + 1.0));\n    gl_Position = projection * view * model * vec4(nPosition, 1.0);\n  } else {\n    gl_Position = vec4(0,0,0,0);\n  }\n  colorChannel = abs(normal);\n}"
var bgFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 colors[3];\n\nvarying vec3 colorChannel;\n\nvoid main() {\n  gl_FragColor = colorChannel.x * colors[0] + \n                 colorChannel.y * colors[1] +\n                 colorChannel.z * colors[2];\n}"
exports.bg = function(gl) {
  return createShader(gl, bgVert, bgFrag, null, [
    {name: 'position', type: 'vec3'},
    {name: 'normal', type: 'vec3'}
  ])
}

},{"gl-shader":227}],129:[function(require,module,exports){
(function (process){
"use strict"

module.exports = createTextSprites

var createBuffer  = require('gl-buffer')
var createVAO     = require('gl-vao')
var vectorizeText = require('vectorize-text')
var createShader  = require('./shaders').text

var globals = window || process.global || {}
var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
globals.__TEXT_CACHE = {}

//Vertex buffer format for text is:
//
/// [x,y,z] = Spatial coordinate
//

var VERTEX_SIZE = 3
var VERTEX_STRIDE = VERTEX_SIZE * 4

function TextSprites(
  gl,
  shader,
  buffer,
  vao) {
  this.gl           = gl
  this.shader       = shader
  this.buffer       = buffer
  this.vao          = vao
  this.tickOffset   =
  this.tickCount    =
  this.labelOffset  =
  this.labelCount   = null
}

var proto = TextSprites.prototype

//Bind textures for rendering
var SHAPE = [0,0]
proto.bind = function(model, view, projection, pixelScale) {
  this.vao.bind()
  this.shader.bind()
  var uniforms = this.shader.uniforms
  uniforms.model = model
  uniforms.view = view
  uniforms.projection = projection
  uniforms.pixelScale = pixelScale
  SHAPE[0] = this.gl.drawingBufferWidth
  SHAPE[1] = this.gl.drawingBufferHeight
  this.shader.uniforms.resolution = SHAPE
}

proto.update = function(bounds, labels, labelFont, ticks, tickFont) {
  var gl = this.gl
  var data = []

  function addItem(t, text, font, size) {
    var fontcache = __TEXT_CACHE[font]
    if(!fontcache) {
      fontcache = __TEXT_CACHE[font] = {}
    }
    var mesh = fontcache[text]
    if(!mesh) {
      mesh = fontcache[text] = tryVectorizeText(text, {
        triangles: true,
        font: font,
        textAlign: 'center',
        textBaseline: 'middle'
      })
    }
    var scale = (size || 12) / 12
    var positions = mesh.positions
    var cells = mesh.cells
    var lo = [ Infinity, Infinity]
    var hi = [-Infinity,-Infinity]
    for(var i=0, nc=cells.length; i<nc; ++i) {
      var c = cells[i]
      for(var j=2; j>=0; --j) {
        var p = positions[c[j]]
        data.push(scale*p[0], -scale*p[1], t)
      }
    }
  }

  //Generate sprites for all 3 axes, store data in texture atlases
  var tickOffset  = [0,0,0]
  var tickCount   = [0,0,0]
  var labelOffset = [0,0,0]
  var labelCount  = [0,0,0]
  for(var d=0; d<3; ++d) {

    //Generate label
    labelOffset[d] = (data.length/VERTEX_SIZE)|0
    addItem(0.5*(bounds[0][d]+bounds[1][d]), labels[d], labelFont)
    labelCount[d] = ((data.length/VERTEX_SIZE)|0) - labelOffset[d]

    //Generate sprites for tick marks
    tickOffset[d] = (data.length/VERTEX_SIZE)|0
    for(var i=0; i<ticks[d].length; ++i) {
      if(!ticks[d][i].text) {
        continue
      }
      addItem(
        ticks[d][i].x,
        ticks[d][i].text,
        ticks[d][i].font || tickFont,
        ticks[d][i].fontSize || 12)
    }
    tickCount[d] = ((data.length/VERTEX_SIZE)|0) - tickOffset[d]
  }

  this.buffer.update(data)
  this.tickOffset = tickOffset
  this.tickCount = tickCount
  this.labelOffset = labelOffset
  this.labelCount = labelCount
}

//Draws the tick marks for an axis
var AXIS = [0,0,0]
proto.drawTicks = function(d, scale, angle, offset, color) {
  if(!this.tickCount[d]) {
    return
  }

  var v = AXIS
  v[0] = v[1] = v[2] = 0
  v[d] = 1
  this.shader.uniforms.axis = v
  this.shader.uniforms.color = color
  this.shader.uniforms.angle = angle
  this.shader.uniforms.scale = scale
  this.shader.uniforms.offset = offset
  this.vao.draw(this.gl.TRIANGLES, this.tickCount[d], this.tickOffset[d])
}

//Draws the text label for an axis
var ZERO = [0,0,0]
proto.drawLabel = function(d, scale, angle, offset, color) {
  if(!this.labelCount[d]) {
    return
  }
  this.shader.uniforms.axis = ZERO
  this.shader.uniforms.color = color
  this.shader.uniforms.angle = angle
  this.shader.uniforms.scale = scale
  this.shader.uniforms.offset = offset
  this.vao.draw(this.gl.TRIANGLES, this.labelCount[d], this.labelOffset[d])
}

//Releases all resources attached to this object
proto.dispose = function() {
  this.shader.dispose()
  this.vao.dispose()
  this.buffer.dispose()
}

function tryVectorizeText(text, options) {
  try {
    return vectorizeText(text, options)
  } catch(e) {
    console.warn('error vectorizing text:', e)
    return {
      cells: [],
      positions: []
    }
  }
}

function createTextSprites(
    gl,
    bounds,
    labels,
    labelFont,
    ticks,
    tickFont) {

  var buffer = createBuffer(gl)
  var vao = createVAO(gl, [
    { "buffer": buffer,
      "size": 3
    }
  ])

  var shader = createShader(gl)
  shader.attributes.position.location = 0

  var result = new TextSprites(
    gl,
    shader,
    buffer,
    vao)

  result.update(bounds, labels, labelFont, ticks, tickFont)

  return result
}

}).call(this,require('_process'))
},{"./shaders":128,"_process":923,"gl-buffer":132,"gl-vao":243,"vectorize-text":1006}],130:[function(require,module,exports){
'use strict'

exports.create   = defaultTicks
exports.equal    = ticksEqual

function prettyPrint(spacing, i) {
  var stepStr = spacing + ""
  var u = stepStr.indexOf(".")
  var sigFigs = 0
  if(u >= 0) {
    sigFigs = stepStr.length - u - 1
  }
  var shift = Math.pow(10, sigFigs)
  var x = Math.round(spacing * i * shift)
  var xstr = x + ""
  if(xstr.indexOf("e") >= 0) {
    return xstr
  }
  var xi = x / shift, xf = x % shift
  if(x < 0) {
    xi = -Math.ceil(xi)|0
    xf = (-xf)|0
  } else {
    xi = Math.floor(xi)|0
    xf = xf|0
  }
  var xis = "" + xi 
  if(x < 0) {
    xis = "-" + xis
  }
  if(sigFigs) {
    var xs = "" + xf
    while(xs.length < sigFigs) {
      xs = "0" + xs
    }
    return xis + "." + xs
  } else {
    return xis
  }
}

function defaultTicks(bounds, tickSpacing) {
  var array = []
  for(var d=0; d<3; ++d) {
    var ticks = []
    var m = 0.5*(bounds[0][d]+bounds[1][d])
    for(var t=0; t*tickSpacing[d]<=bounds[1][d]; ++t) {
      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
    }
    for(var t=-1; t*tickSpacing[d]>=bounds[0][d]; --t) {
      ticks.push({x: t*tickSpacing[d], text: prettyPrint(tickSpacing[d], t)})
    }
    array.push(ticks)
  }
  return array
}

function ticksEqual(ticksA, ticksB) {
  for(var i=0; i<3; ++i) {
    if(ticksA[i].length !== ticksB[i].length) {
      return false
    }
    for(var j=0; j<ticksA[i].length; ++j) {
      var a = ticksA[i][j]
      var b = ticksB[i][j]
      if(
        a.x !== b.x ||
        a.text !== b.text ||
        a.font !== b.font ||
        a.fontColor !== b.fontColor ||
        a.fontSize !== b.fontSize ||
        a.dx !== b.dx ||
        a.dy !== b.dy
      ) {
        return false
      }
    }
  }
  return true
}
},{}],131:[function(require,module,exports){
"use strict"

module.exports = axesProperties

var getPlanes   = require("extract-frustum-planes")
var splitPoly   = require("split-polygon")
var cubeParams  = require("./lib/cube.js")
var m4mul       = require("gl-mat4/multiply")
var m4transpose = require("gl-mat4/transpose")
var v4transformMat4 = require("gl-vec4/transformMat4")

var identity    = new Float32Array([
    1, 0, 0, 0,
    0, 1, 0, 0,
    0, 0, 1, 0,
    0, 0, 0, 1
  ])

var mvp         = new Float32Array(16)

function AxesRange3D(lo, hi, pixelsPerDataUnit) {
  this.lo = lo
  this.hi = hi
  this.pixelsPerDataUnit = pixelsPerDataUnit
}

var SCRATCH_P = [0,0,0,1]
var SCRATCH_Q = [0,0,0,1]

function gradient(result, M, v, width, height) {
  for(var i=0; i<3; ++i) {
    var p = SCRATCH_P
    var q = SCRATCH_Q
    for(var j=0; j<3; ++j) {
      q[j] = p[j] = v[j]
    }
    q[3] = p[3] = 1

    q[i] += 1
    v4transformMat4(q, q, M)
    if(q[3] < 0) {
      result[i] = Infinity
    }

    p[i] -= 1
    v4transformMat4(p, p, M)
    if(p[3] < 0) {
      result[i] = Infinity
    }

    var dx = (p[0]/p[3] - q[0]/q[3]) * width
    var dy = (p[1]/p[3] - q[1]/q[3]) * height

    result[i] = 0.25 * Math.sqrt(dx*dx + dy*dy)
  }
  return result
}

var RANGES = [
  new AxesRange3D(Infinity, -Infinity, Infinity),
  new AxesRange3D(Infinity, -Infinity, Infinity),
  new AxesRange3D(Infinity, -Infinity, Infinity)
]

var SCRATCH_X = [0,0,0]

function axesProperties(axes, camera, width, height, params) {
  var model       = camera.model || identity
  var view        = camera.view || identity
  var projection  = camera.projection || identity
  var bounds      = axes.bounds
  var params      = params || cubeParams(model, view, projection, bounds)
  var axis        = params.axis
  var edges       = params.edges

  m4mul(mvp, view, model)
  m4mul(mvp, projection, mvp)

  //Calculate the following properties for each axis:
  //
  // * lo - start of visible range for each axis in tick coordinates
  // * hi - end of visible range for each axis in tick coordinates
  // * ticksPerPixel - pixel density of tick marks for the axis
  //
  var ranges = RANGES
  for(var i=0; i<3; ++i) {
    ranges[i].lo = Infinity
    ranges[i].hi = -Infinity
    ranges[i].pixelsPerDataUnit = Infinity
  }

  //Compute frustum planes, intersect with box
  var frustum = getPlanes(m4transpose(mvp, mvp))
  m4transpose(mvp, mvp)

  //Loop over vertices of viewable box
  for(var d=0; d<3; ++d) {
    var u = (d+1)%3
    var v = (d+2)%3
    var x = SCRATCH_X
i_loop:
    for(var i=0; i<2; ++i) {
      var poly = []

      if((axis[d] < 0) === !!i) {
        continue
      }

      x[d] = bounds[i][d]
      for(var j=0; j<2; ++j) {
        x[u] = bounds[j^i][u]
        for(var k=0; k<2; ++k) {
          x[v] = bounds[k^j^i][v]
          poly.push(x.slice())
        }
      }
      for(var j=0; j<frustum.length; ++j) {
        if(poly.length === 0) {
          continue i_loop
        }
        poly = splitPoly.positive(poly, frustum[j])
      }

      //Loop over vertices of polygon to find extremal points
      for(var j=0; j<poly.length; ++j) {
        var v = poly[j]
        var grad = gradient(SCRATCH_X, mvp, v, width, height)
        for(var k=0; k<3; ++k) {
          ranges[k].lo = Math.min(ranges[k].lo, v[k])
          ranges[k].hi = Math.max(ranges[k].hi, v[k])
          if(k !== d) {
            ranges[k].pixelsPerDataUnit = Math.min(ranges[k].pixelsPerDataUnit, Math.abs(grad[k]))
          }
        }
      }
    }
  }

  return ranges
}

},{"./lib/cube.js":126,"extract-frustum-planes":96,"gl-mat4/multiply":158,"gl-mat4/transpose":166,"gl-vec4/transformMat4":249,"split-polygon":976}],132:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")
var ops = require("ndarray-ops")
var ndarray = require("ndarray")

var SUPPORTED_TYPES = [
  "uint8",
  "uint8_clamped",
  "uint16",
  "uint32",
  "int8",
  "int16",
  "int32",
  "float32" ]

function GLBuffer(gl, type, handle, length, usage) {
  this.gl = gl
  this.type = type
  this.handle = handle
  this.length = length
  this.usage = usage
}

var proto = GLBuffer.prototype

proto.bind = function() {
  this.gl.bindBuffer(this.type, this.handle)
}

proto.unbind = function() {
  this.gl.bindBuffer(this.type, null)
}

proto.dispose = function() {
  this.gl.deleteBuffer(this.handle)
}

function updateTypeArray(gl, type, len, usage, data, offset) {
  var dataLen = data.length * data.BYTES_PER_ELEMENT
  if(offset < 0) {
    gl.bufferData(type, data, usage)
    return dataLen
  }
  if(dataLen + offset > len) {
    throw new Error("gl-buffer: If resizing buffer, must not specify offset")
  }
  gl.bufferSubData(type, offset, data)
  return len
}

function makeScratchTypeArray(array, dtype) {
  var res = pool.malloc(array.length, dtype)
  var n = array.length
  for(var i=0; i<n; ++i) {
    res[i] = array[i]
  }
  return res
}

function isPacked(shape, stride) {
  var n = 1
  for(var i=stride.length-1; i>=0; --i) {
    if(stride[i] !== n) {
      return false
    }
    n *= shape[i]
  }
  return true
}

proto.update = function(array, offset) {
  if(typeof offset !== "number") {
    offset = -1
  }
  this.bind()
  if(typeof array === "object" && typeof array.shape !== "undefined") { //ndarray
    var dtype = array.dtype
    if(SUPPORTED_TYPES.indexOf(dtype) < 0) {
      dtype = "float32"
    }
    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
      var ext = gl.getExtension('OES_element_index_uint')
      if(ext && dtype !== "uint16") {
        dtype = "uint32"
      } else {
        dtype = "uint16"
      }
    }
    if(dtype === array.dtype && isPacked(array.shape, array.stride)) {
      if(array.offset === 0 && array.data.length === array.shape[0]) {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data, offset)
      } else {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array.data.subarray(array.offset, array.shape[0]), offset)
      }
    } else {
      var tmp = pool.malloc(array.size, dtype)
      var ndt = ndarray(tmp, array.shape)
      ops.assign(ndt, array)
      if(offset < 0) {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp, offset)
      } else {
        this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, tmp.subarray(0, array.size), offset)
      }
      pool.free(tmp)
    }
  } else if(Array.isArray(array)) { //Vanilla array
    var t
    if(this.type === this.gl.ELEMENT_ARRAY_BUFFER) {
      t = makeScratchTypeArray(array, "uint16")
    } else {
      t = makeScratchTypeArray(array, "float32")
    }
    if(offset < 0) {
      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t, offset)
    } else {
      this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, t.subarray(0, array.length), offset)
    }
    pool.free(t)
  } else if(typeof array === "object" && typeof array.length === "number") { //Typed array
    this.length = updateTypeArray(this.gl, this.type, this.length, this.usage, array, offset)
  } else if(typeof array === "number" || array === undefined) { //Number/default
    if(offset >= 0) {
      throw new Error("gl-buffer: Cannot specify offset when resizing buffer")
    }
    array = array | 0
    if(array <= 0) {
      array = 1
    }
    this.gl.bufferData(this.type, array|0, this.usage)
    this.length = array
  } else { //Error, case should not happen
    throw new Error("gl-buffer: Invalid data type")
  }
}

function createBuffer(gl, data, type, usage) {
  type = type || gl.ARRAY_BUFFER
  usage = usage || gl.DYNAMIC_DRAW
  if(type !== gl.ARRAY_BUFFER && type !== gl.ELEMENT_ARRAY_BUFFER) {
    throw new Error("gl-buffer: Invalid type for webgl buffer, must be either gl.ARRAY_BUFFER or gl.ELEMENT_ARRAY_BUFFER")
  }
  if(usage !== gl.DYNAMIC_DRAW && usage !== gl.STATIC_DRAW && usage !== gl.STREAM_DRAW) {
    throw new Error("gl-buffer: Invalid usage for buffer, must be either gl.DYNAMIC_DRAW, gl.STATIC_DRAW or gl.STREAM_DRAW")
  }
  var handle = gl.createBuffer()
  var result = new GLBuffer(gl, type, handle, 0, usage)
  result.update(data)
  return result
}

module.exports = createBuffer

},{"ndarray":443,"ndarray-ops":437,"typedarray-pool":992}],133:[function(require,module,exports){
module.exports = {
  0: 'NONE',
  1: 'ONE',
  2: 'LINE_LOOP',
  3: 'LINE_STRIP',
  4: 'TRIANGLES',
  5: 'TRIANGLE_STRIP',
  6: 'TRIANGLE_FAN',
  256: 'DEPTH_BUFFER_BIT',
  512: 'NEVER',
  513: 'LESS',
  514: 'EQUAL',
  515: 'LEQUAL',
  516: 'GREATER',
  517: 'NOTEQUAL',
  518: 'GEQUAL',
  519: 'ALWAYS',
  768: 'SRC_COLOR',
  769: 'ONE_MINUS_SRC_COLOR',
  770: 'SRC_ALPHA',
  771: 'ONE_MINUS_SRC_ALPHA',
  772: 'DST_ALPHA',
  773: 'ONE_MINUS_DST_ALPHA',
  774: 'DST_COLOR',
  775: 'ONE_MINUS_DST_COLOR',
  776: 'SRC_ALPHA_SATURATE',
  1024: 'STENCIL_BUFFER_BIT',
  1028: 'FRONT',
  1029: 'BACK',
  1032: 'FRONT_AND_BACK',
  1280: 'INVALID_ENUM',
  1281: 'INVALID_VALUE',
  1282: 'INVALID_OPERATION',
  1285: 'OUT_OF_MEMORY',
  1286: 'INVALID_FRAMEBUFFER_OPERATION',
  2304: 'CW',
  2305: 'CCW',
  2849: 'LINE_WIDTH',
  2884: 'CULL_FACE',
  2885: 'CULL_FACE_MODE',
  2886: 'FRONT_FACE',
  2928: 'DEPTH_RANGE',
  2929: 'DEPTH_TEST',
  2930: 'DEPTH_WRITEMASK',
  2931: 'DEPTH_CLEAR_VALUE',
  2932: 'DEPTH_FUNC',
  2960: 'STENCIL_TEST',
  2961: 'STENCIL_CLEAR_VALUE',
  2962: 'STENCIL_FUNC',
  2963: 'STENCIL_VALUE_MASK',
  2964: 'STENCIL_FAIL',
  2965: 'STENCIL_PASS_DEPTH_FAIL',
  2966: 'STENCIL_PASS_DEPTH_PASS',
  2967: 'STENCIL_REF',
  2968: 'STENCIL_WRITEMASK',
  2978: 'VIEWPORT',
  3024: 'DITHER',
  3042: 'BLEND',
  3088: 'SCISSOR_BOX',
  3089: 'SCISSOR_TEST',
  3106: 'COLOR_CLEAR_VALUE',
  3107: 'COLOR_WRITEMASK',
  3317: 'UNPACK_ALIGNMENT',
  3333: 'PACK_ALIGNMENT',
  3379: 'MAX_TEXTURE_SIZE',
  3386: 'MAX_VIEWPORT_DIMS',
  3408: 'SUBPIXEL_BITS',
  3410: 'RED_BITS',
  3411: 'GREEN_BITS',
  3412: 'BLUE_BITS',
  3413: 'ALPHA_BITS',
  3414: 'DEPTH_BITS',
  3415: 'STENCIL_BITS',
  3553: 'TEXTURE_2D',
  4352: 'DONT_CARE',
  4353: 'FASTEST',
  4354: 'NICEST',
  5120: 'BYTE',
  5121: 'UNSIGNED_BYTE',
  5122: 'SHORT',
  5123: 'UNSIGNED_SHORT',
  5124: 'INT',
  5125: 'UNSIGNED_INT',
  5126: 'FLOAT',
  5386: 'INVERT',
  5890: 'TEXTURE',
  6401: 'STENCIL_INDEX',
  6402: 'DEPTH_COMPONENT',
  6406: 'ALPHA',
  6407: 'RGB',
  6408: 'RGBA',
  6409: 'LUMINANCE',
  6410: 'LUMINANCE_ALPHA',
  7680: 'KEEP',
  7681: 'REPLACE',
  7682: 'INCR',
  7683: 'DECR',
  7936: 'VENDOR',
  7937: 'RENDERER',
  7938: 'VERSION',
  9728: 'NEAREST',
  9729: 'LINEAR',
  9984: 'NEAREST_MIPMAP_NEAREST',
  9985: 'LINEAR_MIPMAP_NEAREST',
  9986: 'NEAREST_MIPMAP_LINEAR',
  9987: 'LINEAR_MIPMAP_LINEAR',
  10240: 'TEXTURE_MAG_FILTER',
  10241: 'TEXTURE_MIN_FILTER',
  10242: 'TEXTURE_WRAP_S',
  10243: 'TEXTURE_WRAP_T',
  10497: 'REPEAT',
  10752: 'POLYGON_OFFSET_UNITS',
  16384: 'COLOR_BUFFER_BIT',
  32769: 'CONSTANT_COLOR',
  32770: 'ONE_MINUS_CONSTANT_COLOR',
  32771: 'CONSTANT_ALPHA',
  32772: 'ONE_MINUS_CONSTANT_ALPHA',
  32773: 'BLEND_COLOR',
  32774: 'FUNC_ADD',
  32777: 'BLEND_EQUATION_RGB',
  32778: 'FUNC_SUBTRACT',
  32779: 'FUNC_REVERSE_SUBTRACT',
  32819: 'UNSIGNED_SHORT_4_4_4_4',
  32820: 'UNSIGNED_SHORT_5_5_5_1',
  32823: 'POLYGON_OFFSET_FILL',
  32824: 'POLYGON_OFFSET_FACTOR',
  32854: 'RGBA4',
  32855: 'RGB5_A1',
  32873: 'TEXTURE_BINDING_2D',
  32926: 'SAMPLE_ALPHA_TO_COVERAGE',
  32928: 'SAMPLE_COVERAGE',
  32936: 'SAMPLE_BUFFERS',
  32937: 'SAMPLES',
  32938: 'SAMPLE_COVERAGE_VALUE',
  32939: 'SAMPLE_COVERAGE_INVERT',
  32968: 'BLEND_DST_RGB',
  32969: 'BLEND_SRC_RGB',
  32970: 'BLEND_DST_ALPHA',
  32971: 'BLEND_SRC_ALPHA',
  33071: 'CLAMP_TO_EDGE',
  33170: 'GENERATE_MIPMAP_HINT',
  33189: 'DEPTH_COMPONENT16',
  33306: 'DEPTH_STENCIL_ATTACHMENT',
  33635: 'UNSIGNED_SHORT_5_6_5',
  33648: 'MIRRORED_REPEAT',
  33901: 'ALIASED_POINT_SIZE_RANGE',
  33902: 'ALIASED_LINE_WIDTH_RANGE',
  33984: 'TEXTURE0',
  33985: 'TEXTURE1',
  33986: 'TEXTURE2',
  33987: 'TEXTURE3',
  33988: 'TEXTURE4',
  33989: 'TEXTURE5',
  33990: 'TEXTURE6',
  33991: 'TEXTURE7',
  33992: 'TEXTURE8',
  33993: 'TEXTURE9',
  33994: 'TEXTURE10',
  33995: 'TEXTURE11',
  33996: 'TEXTURE12',
  33997: 'TEXTURE13',
  33998: 'TEXTURE14',
  33999: 'TEXTURE15',
  34000: 'TEXTURE16',
  34001: 'TEXTURE17',
  34002: 'TEXTURE18',
  34003: 'TEXTURE19',
  34004: 'TEXTURE20',
  34005: 'TEXTURE21',
  34006: 'TEXTURE22',
  34007: 'TEXTURE23',
  34008: 'TEXTURE24',
  34009: 'TEXTURE25',
  34010: 'TEXTURE26',
  34011: 'TEXTURE27',
  34012: 'TEXTURE28',
  34013: 'TEXTURE29',
  34014: 'TEXTURE30',
  34015: 'TEXTURE31',
  34016: 'ACTIVE_TEXTURE',
  34024: 'MAX_RENDERBUFFER_SIZE',
  34041: 'DEPTH_STENCIL',
  34055: 'INCR_WRAP',
  34056: 'DECR_WRAP',
  34067: 'TEXTURE_CUBE_MAP',
  34068: 'TEXTURE_BINDING_CUBE_MAP',
  34069: 'TEXTURE_CUBE_MAP_POSITIVE_X',
  34070: 'TEXTURE_CUBE_MAP_NEGATIVE_X',
  34071: 'TEXTURE_CUBE_MAP_POSITIVE_Y',
  34072: 'TEXTURE_CUBE_MAP_NEGATIVE_Y',
  34073: 'TEXTURE_CUBE_MAP_POSITIVE_Z',
  34074: 'TEXTURE_CUBE_MAP_NEGATIVE_Z',
  34076: 'MAX_CUBE_MAP_TEXTURE_SIZE',
  34338: 'VERTEX_ATTRIB_ARRAY_ENABLED',
  34339: 'VERTEX_ATTRIB_ARRAY_SIZE',
  34340: 'VERTEX_ATTRIB_ARRAY_STRIDE',
  34341: 'VERTEX_ATTRIB_ARRAY_TYPE',
  34342: 'CURRENT_VERTEX_ATTRIB',
  34373: 'VERTEX_ATTRIB_ARRAY_POINTER',
  34466: 'NUM_COMPRESSED_TEXTURE_FORMATS',
  34467: 'COMPRESSED_TEXTURE_FORMATS',
  34660: 'BUFFER_SIZE',
  34661: 'BUFFER_USAGE',
  34816: 'STENCIL_BACK_FUNC',
  34817: 'STENCIL_BACK_FAIL',
  34818: 'STENCIL_BACK_PASS_DEPTH_FAIL',
  34819: 'STENCIL_BACK_PASS_DEPTH_PASS',
  34877: 'BLEND_EQUATION_ALPHA',
  34921: 'MAX_VERTEX_ATTRIBS',
  34922: 'VERTEX_ATTRIB_ARRAY_NORMALIZED',
  34930: 'MAX_TEXTURE_IMAGE_UNITS',
  34962: 'ARRAY_BUFFER',
  34963: 'ELEMENT_ARRAY_BUFFER',
  34964: 'ARRAY_BUFFER_BINDING',
  34965: 'ELEMENT_ARRAY_BUFFER_BINDING',
  34975: 'VERTEX_ATTRIB_ARRAY_BUFFER_BINDING',
  35040: 'STREAM_DRAW',
  35044: 'STATIC_DRAW',
  35048: 'DYNAMIC_DRAW',
  35632: 'FRAGMENT_SHADER',
  35633: 'VERTEX_SHADER',
  35660: 'MAX_VERTEX_TEXTURE_IMAGE_UNITS',
  35661: 'MAX_COMBINED_TEXTURE_IMAGE_UNITS',
  35663: 'SHADER_TYPE',
  35664: 'FLOAT_VEC2',
  35665: 'FLOAT_VEC3',
  35666: 'FLOAT_VEC4',
  35667: 'INT_VEC2',
  35668: 'INT_VEC3',
  35669: 'INT_VEC4',
  35670: 'BOOL',
  35671: 'BOOL_VEC2',
  35672: 'BOOL_VEC3',
  35673: 'BOOL_VEC4',
  35674: 'FLOAT_MAT2',
  35675: 'FLOAT_MAT3',
  35676: 'FLOAT_MAT4',
  35678: 'SAMPLER_2D',
  35680: 'SAMPLER_CUBE',
  35712: 'DELETE_STATUS',
  35713: 'COMPILE_STATUS',
  35714: 'LINK_STATUS',
  35715: 'VALIDATE_STATUS',
  35716: 'INFO_LOG_LENGTH',
  35717: 'ATTACHED_SHADERS',
  35718: 'ACTIVE_UNIFORMS',
  35719: 'ACTIVE_UNIFORM_MAX_LENGTH',
  35720: 'SHADER_SOURCE_LENGTH',
  35721: 'ACTIVE_ATTRIBUTES',
  35722: 'ACTIVE_ATTRIBUTE_MAX_LENGTH',
  35724: 'SHADING_LANGUAGE_VERSION',
  35725: 'CURRENT_PROGRAM',
  36003: 'STENCIL_BACK_REF',
  36004: 'STENCIL_BACK_VALUE_MASK',
  36005: 'STENCIL_BACK_WRITEMASK',
  36006: 'FRAMEBUFFER_BINDING',
  36007: 'RENDERBUFFER_BINDING',
  36048: 'FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE',
  36049: 'FRAMEBUFFER_ATTACHMENT_OBJECT_NAME',
  36050: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL',
  36051: 'FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE',
  36053: 'FRAMEBUFFER_COMPLETE',
  36054: 'FRAMEBUFFER_INCOMPLETE_ATTACHMENT',
  36055: 'FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT',
  36057: 'FRAMEBUFFER_INCOMPLETE_DIMENSIONS',
  36061: 'FRAMEBUFFER_UNSUPPORTED',
  36064: 'COLOR_ATTACHMENT0',
  36096: 'DEPTH_ATTACHMENT',
  36128: 'STENCIL_ATTACHMENT',
  36160: 'FRAMEBUFFER',
  36161: 'RENDERBUFFER',
  36162: 'RENDERBUFFER_WIDTH',
  36163: 'RENDERBUFFER_HEIGHT',
  36164: 'RENDERBUFFER_INTERNAL_FORMAT',
  36168: 'STENCIL_INDEX8',
  36176: 'RENDERBUFFER_RED_SIZE',
  36177: 'RENDERBUFFER_GREEN_SIZE',
  36178: 'RENDERBUFFER_BLUE_SIZE',
  36179: 'RENDERBUFFER_ALPHA_SIZE',
  36180: 'RENDERBUFFER_DEPTH_SIZE',
  36181: 'RENDERBUFFER_STENCIL_SIZE',
  36194: 'RGB565',
  36336: 'LOW_FLOAT',
  36337: 'MEDIUM_FLOAT',
  36338: 'HIGH_FLOAT',
  36339: 'LOW_INT',
  36340: 'MEDIUM_INT',
  36341: 'HIGH_INT',
  36346: 'SHADER_COMPILER',
  36347: 'MAX_VERTEX_UNIFORM_VECTORS',
  36348: 'MAX_VARYING_VECTORS',
  36349: 'MAX_FRAGMENT_UNIFORM_VECTORS',
  37440: 'UNPACK_FLIP_Y_WEBGL',
  37441: 'UNPACK_PREMULTIPLY_ALPHA_WEBGL',
  37442: 'CONTEXT_LOST_WEBGL',
  37443: 'UNPACK_COLORSPACE_CONVERSION_WEBGL',
  37444: 'BROWSER_DEFAULT_WEBGL'
}

},{}],134:[function(require,module,exports){
var gl10 = require('./1.0/numbers')

module.exports = function lookupConstant (number) {
  return gl10[number]
}

},{"./1.0/numbers":133}],135:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var pool = require('typedarray-pool')
var shaders = require('./lib/shaders')

module.exports = createError2D

var WEIGHTS = [
  // x-error bar
  [1, 0, 0, 1, 0, 0],
  [1, 0, 0, -1, 0, 0],
  [-1, 0, 0, -1, 0, 0],

  [-1, 0, 0, -1, 0, 0],
  [-1, 0, 0, 1, 0, 0],
  [1, 0, 0, 1, 0, 0],

  // x-error right cap
  [1, 0, -1, 0, 0, 1],
  [1, 0, -1, 0, 0, -1],
  [1, 0, 1, 0, 0, -1],

  [1, 0, 1, 0, 0, -1],
  [1, 0, 1, 0, 0, 1],
  [1, 0, -1, 0, 0, 1],

  // x-error left cap
  [-1, 0, -1, 0, 0, 1],
  [-1, 0, -1, 0, 0, -1],
  [-1, 0, 1, 0, 0, -1],

  [-1, 0, 1, 0, 0, -1],
  [-1, 0, 1, 0, 0, 1],
  [-1, 0, -1, 0, 0, 1],

  // y-error bar
  [0, 1, 1, 0, 0, 0],
  [0, 1, -1, 0, 0, 0],
  [0, -1, -1, 0, 0, 0],

  [0, -1, -1, 0, 0, 0],
  [0, 1, 1, 0, 0, 0],
  [0, -1, 1, 0, 0, 0],

  // y-error top cap
  [0, 1, 0, -1, 1, 0],
  [0, 1, 0, -1, -1, 0],
  [0, 1, 0, 1, -1, 0],

  [0, 1, 0, 1, 1, 0],
  [0, 1, 0, -1, 1, 0],
  [0, 1, 0, 1, -1, 0],

  // y-error bottom cap
  [0, -1, 0, -1, 1, 0],
  [0, -1, 0, -1, -1, 0],
  [0, -1, 0, 1, -1, 0],

  [0, -1, 0, 1, 1, 0],
  [0, -1, 0, -1, 1, 0],
  [0, -1, 0, 1, -1, 0]
]

function GLError2D (plot, shader, bufferHi, bufferLo) {
  this.plot = plot

  this.shader = shader
  this.bufferHi = bufferHi
  this.bufferLo = bufferLo

  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]

  this.numPoints = 0

  this.color = [0, 0, 0, 1]
}

var proto = GLError2D.prototype

proto.draw = (function () {
  var SCALE_HI = new Float32Array([0, 0])
  var SCALE_LO = new Float32Array([0, 0])
  var TRANSLATE_HI = new Float32Array([0, 0])
  var TRANSLATE_LO = new Float32Array([0, 0])

  var PIXEL_SCALE = [1, 1]

  return function () {
    var plot = this.plot
    var shader = this.shader
    var bounds = this.bounds
    var numPoints = this.numPoints

    if (!numPoints) {
      return
    }

    var gl = plot.gl
    var dataBox = plot.dataBox
    var viewBox = plot.viewBox
    var pixelRatio = plot.pixelRatio

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    var scaleX = 2 * boundX / dataX
    var scaleY = 2 * boundY / dataY
    var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
    var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

    SCALE_HI[0] = scaleX
    SCALE_HI[1] = scaleY
    SCALE_LO[0] = scaleX - SCALE_HI[0]
    SCALE_LO[1] = scaleY - SCALE_HI[1]
    TRANSLATE_HI[0] = translateX
    TRANSLATE_HI[1] = translateY
    TRANSLATE_LO[0] = translateX - TRANSLATE_HI[0]
    TRANSLATE_LO[1] = translateY - TRANSLATE_HI[1]

    var screenX = viewBox[2] - viewBox[0]
    var screenY = viewBox[3] - viewBox[1]

    PIXEL_SCALE[0] = 2.0 * pixelRatio / screenX
    PIXEL_SCALE[1] = 2.0 * pixelRatio / screenY

    shader.bind()

    shader.uniforms.scaleHi = SCALE_HI
    shader.uniforms.scaleLo = SCALE_LO
    shader.uniforms.translateHi = TRANSLATE_HI
    shader.uniforms.translateLo = TRANSLATE_LO
    shader.uniforms.pixelScale = PIXEL_SCALE
    shader.uniforms.color = this.color

    this.bufferLo.bind()
    shader.attributes.positionLo.pointer(gl.FLOAT, false, 16, 0)

    this.bufferHi.bind()
    shader.attributes.positionHi.pointer(gl.FLOAT, false, 16, 0)

    shader.attributes.pixelOffset.pointer(gl.FLOAT, false, 16, 8)

    gl.drawArrays(gl.TRIANGLES, 0, numPoints * WEIGHTS.length)
  }
})()

proto.drawPick = function (offset) { return offset }
proto.pick = function () {
  return null
}

proto.update = function (options) {
  options = options || {}

  var i, x, y

  var positions = options.positions || []
  var errors = options.errors || []

  var lineWidth = 1
  if ('lineWidth' in options) {
    lineWidth = +options.lineWidth
  }

  var capSize = 5
  if ('capSize' in options) {
    capSize = +options.capSize
  }

  this.color = (options.color || [0, 0, 0, 1]).slice()

  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]

  var numPoints = this.numPoints = positions.length >> 1
  for (i = 0; i < numPoints; ++i) {
    x = positions[i * 2]
    y = positions[i * 2 + 1]

    bounds[0] = Math.min(x, bounds[0])
    bounds[1] = Math.min(y, bounds[1])
    bounds[2] = Math.max(x, bounds[2])
    bounds[3] = Math.max(y, bounds[3])
  }
  if (bounds[2] === bounds[0]) {
    bounds[2] += 1
  }
  if (bounds[3] === bounds[1]) {
    bounds[3] += 1
  }
  var sx = 1.0 / (bounds[2] - bounds[0])
  var sy = 1.0 / (bounds[3] - bounds[1])
  var tx = bounds[0]
  var ty = bounds[1]

  var bufferData = pool.mallocFloat64(numPoints * WEIGHTS.length * 4)
  var bufferDataHi = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
  var bufferDataLo = pool.mallocFloat32(numPoints * WEIGHTS.length * 4)
  var ptr = 0
  for (i = 0; i < numPoints; ++i) {
    x = positions[2 * i]
    y = positions[2 * i + 1]
    var ex0 = errors[4 * i]
    var ex1 = errors[4 * i + 1]
    var ey0 = errors[4 * i + 2]
    var ey1 = errors[4 * i + 3]

    for (var j = 0; j < WEIGHTS.length; ++j) {
      var w = WEIGHTS[j]

      var dx = w[0]
      var dy = w[1]

      if (dx < 0) {
        dx *= ex0
      } else if (dx > 0) {
        dx *= ex1
      }

      if (dy < 0) {
        dy *= ey0
      } else if (dy > 0) {
        dy *= ey1
      }

      bufferData[ptr++] = sx * ((x - tx) + dx)
      bufferData[ptr++] = sy * ((y - ty) + dy)
      bufferData[ptr++] = lineWidth * w[2] + (capSize + lineWidth) * w[4]
      bufferData[ptr++] = lineWidth * w[3] + (capSize + lineWidth) * w[5]
    }
  }
  for(i = 0; i < bufferData.length; i++) {
    bufferDataHi[i] = bufferData[i]
    bufferDataLo[i] = bufferData[i] - bufferDataHi[i]
  }
  this.bufferHi.update(bufferDataHi)
  this.bufferLo.update(bufferDataLo)
  pool.free(bufferData)
}

proto.dispose = function () {
  this.plot.removeObject(this)
  this.shader.dispose()
  this.bufferHi.dispose()
  this.bufferLo.dispose()
}

function createError2D (plot, options) {
  var shader = createShader(plot.gl, shaders.vertex, shaders.fragment)
  var bufferHi = createBuffer(plot.gl)
  var bufferLo = createBuffer(plot.gl)

  var errorBars = new GLError2D(plot, shader, bufferHi, bufferLo)

  errorBars.update(options)

  plot.addObject(errorBars)

  return errorBars
}

},{"./lib/shaders":136,"gl-buffer":132,"gl-shader":227,"typedarray-pool":992}],136:[function(require,module,exports){


module.exports = {
  vertex: "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi;\nattribute vec2 positionLo;\nattribute vec2 pixelOffset;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo, pixelScale;\n\nvec2 project(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\nvoid main() {\n  vec3 scrPosition = vec3(\n         project(scaleHi, translateHi, scaleLo, translateLo, positionHi, positionLo),\n         1);\n  gl_Position = vec4(\n    scrPosition.xy + scrPosition.z * pixelScale * pixelOffset,\n    0,\n    scrPosition.z);\n}\n",
  fragment: "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}\n"
}

},{}],137:[function(require,module,exports){
'use strict'

module.exports = createErrorBars

var createBuffer  = require('gl-buffer')
var createVAO     = require('gl-vao')
var createShader  = require('./shaders/index')

var IDENTITY = [1,0,0,0,
                0,1,0,0,
                0,0,1,0,
                0,0,0,1]

function ErrorBars(gl, buffer, vao, shader) {
  this.gl           = gl
  this.shader       = shader
  this.buffer       = buffer
  this.vao          = vao
  this.pixelRatio   = 1
  this.bounds       = [[ Infinity, Infinity, Infinity], [-Infinity,-Infinity,-Infinity]]
  this.clipBounds   = [[-Infinity,-Infinity,-Infinity], [ Infinity, Infinity, Infinity]]
  this.lineWidth    = [1,1,1]
  this.capSize      = [10,10,10]
  this.lineCount    = [0,0,0]
  this.lineOffset   = [0,0,0]
  this.opacity      = 1
}

var proto = ErrorBars.prototype

proto.isOpaque = function() {
  return this.opacity >= 1
}

proto.isTransparent = function() {
  return this.opacity < 1
}

proto.drawTransparent = proto.draw = function(cameraParams) {
  var gl = this.gl
  var uniforms        = this.shader.uniforms

  this.shader.bind()
  var view       = uniforms.view       = cameraParams.view       || IDENTITY
  var projection = uniforms.projection = cameraParams.projection || IDENTITY
  uniforms.model      = cameraParams.model      || IDENTITY
  uniforms.clipBounds = this.clipBounds
  uniforms.opacity    = this.opacity


  var cx = view[12]
  var cy = view[13]
  var cz = view[14]
  var cw = view[15]
  var pixelScaleF = this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight


  this.vao.bind()
  for(var i=0; i<3; ++i) {
    gl.lineWidth(this.lineWidth[i])
    uniforms.capSize = this.capSize[i] * pixelScaleF
    gl.drawArrays(gl.LINES, this.lineOffset[i], this.lineCount[i])
  }
  this.vao.unbind()
}

function updateBounds(bounds, point) {
  for(var i=0; i<3; ++i) {
    bounds[0][i] = Math.min(bounds[0][i], point[i])
    bounds[1][i] = Math.max(bounds[1][i], point[i])
  }
}

var FACE_TABLE = (function(){
  var table = new Array(3)
  for(var d=0; d<3; ++d) {
    var row = []
    for(var j=1; j<=2; ++j) {
      for(var s=-1; s<=1; s+=2) {
        var u = (j+d) % 3
        var y = [0,0,0]
        y[u] = s
        row.push(y)
      }
    }
    table[d] = row
  }
  return table
})()


function emitFace(verts, x, c, d) {
  var offsets = FACE_TABLE[d]
  for(var i=0; i<offsets.length; ++i) {
    var o = offsets[i]
    verts.push(x[0], x[1], x[2],
               c[0], c[1], c[2], c[3],
               o[0], o[1], o[2])
  }
  return offsets.length
}

proto.update = function(options) {
  options = options || {}

  if('lineWidth' in options) {
    this.lineWidth = options.lineWidth
    if(!Array.isArray(this.lineWidth)) {
      this.lineWidth = [this.lineWidth, this.lineWidth, this.lineWidth]
    }
  }
  if('capSize' in options) {
    this.capSize = options.capSize
    if(!Array.isArray(this.capSize)) {
      this.capSize = [this.capSize, this.capSize, this.capSize]
    }
  }
  if('opacity' in options) {
    this.opacity = options.opacity
  }

  var color    = options.color || [[0,0,0],[0,0,0],[0,0,0]]
  var position = options.position
  var error    = options.error
  if(!Array.isArray(color[0])) {
    color = [color,color,color]
  }

  if(position && error) {

    var verts       = []
    var n           = position.length
    var vertexCount = 0
    this.bounds     = [[ Infinity, Infinity, Infinity],
                       [-Infinity,-Infinity,-Infinity]]
    this.lineCount  = [0,0,0]

    //Build geometry for lines
    for(var j=0; j<3; ++j) {
      this.lineOffset[j] = vertexCount

i_loop:
      for(var i=0; i<n; ++i) {
        var p = position[i]

        for(var k=0; k<3; ++k) {
          if(isNaN(p[k]) || !isFinite(p[k])) {
            continue i_loop
          }
        }

        var e = error[i]
        var c = color[j]
        if(Array.isArray(c[0])) {
          c = color[i]
        }
        if(c.length === 3) {
          c = [c[0], c[1], c[2], 1]
        }
        if(isNaN(e[0][j]) || isNaN(e[1][j])) {
          continue
        }
        if(e[0][j] < 0) {
          var x = p.slice()
          x[j] += e[0][j]
          verts.push(p[0], p[1], p[2],
                     c[0], c[1], c[2], c[3],
                        0,    0,    0,
                     x[0], x[1], x[2],
                     c[0], c[1], c[2], c[3],
                        0,    0,    0)
          updateBounds(this.bounds, x)
          vertexCount += 2 + emitFace(verts, x, c, j)
        }
        if(e[1][j] > 0) {
          var x = p.slice()
          x[j] += e[1][j]
          verts.push(p[0], p[1], p[2],
                     c[0], c[1], c[2], c[3],
                        0,    0,    0,
                     x[0], x[1], x[2],
                     c[0], c[1], c[2], c[3],
                        0,    0,    0)
          updateBounds(this.bounds, x)
          vertexCount += 2 + emitFace(verts, x, c, j)
        }
      }
      this.lineCount[j] = vertexCount - this.lineOffset[j]
    }
    this.buffer.update(verts)
  }
}

proto.dispose = function() {
  this.shader.dispose()
  this.buffer.dispose()
  this.vao.dispose()
}

function createErrorBars(options) {
  var gl = options.gl
  var buffer = createBuffer(gl)
  var vao = createVAO(gl, [
      {
        buffer: buffer,
        type:   gl.FLOAT,
        size:   3,
        offset: 0,
        stride: 40
      },
      {
        buffer: buffer,
        type:   gl.FLOAT,
        size:   4,
        offset: 12,
        stride: 40
      },
      {
        buffer: buffer,
        type:   gl.FLOAT,
        size:   3,
        offset: 28,
        stride: 40
      }
    ])

  var shader = createShader(gl)
  shader.attributes.position.location = 0
  shader.attributes.color.location    = 1
  shader.attributes.offset.location   = 2

  var result = new ErrorBars(gl, buffer, vao, shader)
  result.update(options)
  return result
}

},{"./shaders/index":138,"gl-buffer":132,"gl-vao":243}],138:[function(require,module,exports){
'use strict'


var createShader = require('gl-shader')

var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, offset;\nattribute vec4 color;\nuniform mat4 model, view, projection;\nuniform float capSize;\nvarying vec4 fragColor;\nvarying vec3 fragPosition;\n\nvoid main() {\n  vec4 worldPosition  = model * vec4(position, 1.0);\n  worldPosition       = (worldPosition / worldPosition.w) + vec4(capSize * offset, 0.0);\n  gl_Position         = projection * view * worldPosition;\n  fragColor           = color;\n  fragPosition        = position;\n}"
var fragSrc = "precision mediump float;\n#define GLSLIFY 1\nuniform vec3 clipBounds[2];\nuniform float opacity;\nvarying vec3 fragPosition;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(fragPosition, clipBounds[0])) || any(greaterThan(fragPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = opacity * fragColor;\n}"

module.exports = function(gl) {
  return createShader(gl, vertSrc, fragSrc, null, [
    {name: 'position', type: 'vec3'},
    {name: 'offset', type: 'vec3'},
    {name: 'color', type: 'vec4'}
  ])
}

},{"gl-shader":227}],139:[function(require,module,exports){
'use strict'

var createTexture = require('gl-texture2d')

module.exports = createFBO

var colorAttachmentArrays = null
var FRAMEBUFFER_UNSUPPORTED
var FRAMEBUFFER_INCOMPLETE_ATTACHMENT
var FRAMEBUFFER_INCOMPLETE_DIMENSIONS
var FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT

function saveFBOState(gl) {
  var fbo = gl.getParameter(gl.FRAMEBUFFER_BINDING)
  var rbo = gl.getParameter(gl.RENDERBUFFER_BINDING)
  var tex = gl.getParameter(gl.TEXTURE_BINDING_2D)
  return [fbo, rbo, tex]
}

function restoreFBOState(gl, data) {
  gl.bindFramebuffer(gl.FRAMEBUFFER, data[0])
  gl.bindRenderbuffer(gl.RENDERBUFFER, data[1])
  gl.bindTexture(gl.TEXTURE_2D, data[2])
}

function lazyInitColorAttachments(gl, ext) {
  var maxColorAttachments = gl.getParameter(ext.MAX_COLOR_ATTACHMENTS_WEBGL)
  colorAttachmentArrays = new Array(maxColorAttachments + 1)
  for(var i=0; i<=maxColorAttachments; ++i) {
    var x = new Array(maxColorAttachments)
    for(var j=0; j<i; ++j) {
      x[j] = gl.COLOR_ATTACHMENT0 + j
    }
    for(var j=i; j<maxColorAttachments; ++j) {
      x[j] = gl.NONE
    }
    colorAttachmentArrays[i] = x
  }
}

//Throw an appropriate error
function throwFBOError(status) {
  switch(status){
    case FRAMEBUFFER_UNSUPPORTED:
      throw new Error('gl-fbo: Framebuffer unsupported')
    case FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
      throw new Error('gl-fbo: Framebuffer incomplete attachment')
    case FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
      throw new Error('gl-fbo: Framebuffer incomplete dimensions')
    case FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
      throw new Error('gl-fbo: Framebuffer incomplete missing attachment')
    default:
      throw new Error('gl-fbo: Framebuffer failed for unspecified reason')
  }
}

//Initialize a texture object
function initTexture(gl, width, height, type, format, attachment) {
  if(!type) {
    return null
  }
  var result = createTexture(gl, width, height, format, type)
  result.magFilter = gl.NEAREST
  result.minFilter = gl.NEAREST
  result.mipSamples = 1
  result.bind()
  gl.framebufferTexture2D(gl.FRAMEBUFFER, attachment, gl.TEXTURE_2D, result.handle, 0)
  return result
}

//Initialize a render buffer object
function initRenderBuffer(gl, width, height, component, attachment) {
  var result = gl.createRenderbuffer()
  gl.bindRenderbuffer(gl.RENDERBUFFER, result)
  gl.renderbufferStorage(gl.RENDERBUFFER, component, width, height)
  gl.framebufferRenderbuffer(gl.FRAMEBUFFER, attachment, gl.RENDERBUFFER, result)
  return result
}

//Rebuild the frame buffer
function rebuildFBO(fbo) {

  //Save FBO state
  var state = saveFBOState(fbo.gl)

  var gl = fbo.gl
  var handle = fbo.handle = gl.createFramebuffer()
  var width = fbo._shape[0]
  var height = fbo._shape[1]
  var numColors = fbo.color.length
  var ext = fbo._ext
  var useStencil = fbo._useStencil
  var useDepth = fbo._useDepth
  var colorType = fbo._colorType

  //Bind the fbo
  gl.bindFramebuffer(gl.FRAMEBUFFER, handle)

  //Allocate color buffers
  for(var i=0; i<numColors; ++i) {
    fbo.color[i] = initTexture(gl, width, height, colorType, gl.RGBA, gl.COLOR_ATTACHMENT0 + i)
  }
  if(numColors === 0) {
    fbo._color_rb = initRenderBuffer(gl, width, height, gl.RGBA4, gl.COLOR_ATTACHMENT0)
    if(ext) {
      ext.drawBuffersWEBGL(colorAttachmentArrays[0])
    }
  } else if(numColors > 1) {
    ext.drawBuffersWEBGL(colorAttachmentArrays[numColors])
  }

  //Allocate depth/stencil buffers
  var WEBGL_depth_texture = gl.getExtension('WEBGL_depth_texture')
  if(WEBGL_depth_texture) {
    if(useStencil) {
      fbo.depth = initTexture(gl, width, height,
                          WEBGL_depth_texture.UNSIGNED_INT_24_8_WEBGL,
                          gl.DEPTH_STENCIL,
                          gl.DEPTH_STENCIL_ATTACHMENT)
    } else if(useDepth) {
      fbo.depth = initTexture(gl, width, height,
                          gl.UNSIGNED_SHORT,
                          gl.DEPTH_COMPONENT,
                          gl.DEPTH_ATTACHMENT)
    }
  } else {
    if(useDepth && useStencil) {
      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_STENCIL, gl.DEPTH_STENCIL_ATTACHMENT)
    } else if(useDepth) {
      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.DEPTH_COMPONENT16, gl.DEPTH_ATTACHMENT)
    } else if(useStencil) {
      fbo._depth_rb = initRenderBuffer(gl, width, height, gl.STENCIL_INDEX, gl.STENCIL_ATTACHMENT)
    }
  }

  //Check frame buffer state
  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
  if(status !== gl.FRAMEBUFFER_COMPLETE) {

    //Release all partially allocated resources
    fbo._destroyed = true

    //Release all resources
    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
    gl.deleteFramebuffer(fbo.handle)
    fbo.handle = null
    if(fbo.depth) {
      fbo.depth.dispose()
      fbo.depth = null
    }
    if(fbo._depth_rb) {
      gl.deleteRenderbuffer(fbo._depth_rb)
      fbo._depth_rb = null
    }
    for(var i=0; i<fbo.color.length; ++i) {
      fbo.color[i].dispose()
      fbo.color[i] = null
    }
    if(fbo._color_rb) {
      gl.deleteRenderbuffer(fbo._color_rb)
      fbo._color_rb = null
    }

    restoreFBOState(gl, state)

    //Throw the frame buffer error
    throwFBOError(status)
  }

  //Everything ok, let's get on with life
  restoreFBOState(gl, state)
}

function Framebuffer(gl, width, height, colorType, numColors, useDepth, useStencil, ext) {

  //Handle and set properties
  this.gl = gl
  this._shape = [width|0, height|0]
  this._destroyed = false
  this._ext = ext

  //Allocate buffers
  this.color = new Array(numColors)
  for(var i=0; i<numColors; ++i) {
    this.color[i] = null
  }
  this._color_rb = null
  this.depth = null
  this._depth_rb = null

  //Save depth and stencil flags
  this._colorType = colorType
  this._useDepth = useDepth
  this._useStencil = useStencil

  //Shape vector for resizing
  var parent = this
  var shapeVector = [width|0, height|0]
  Object.defineProperties(shapeVector, {
    0: {
      get: function() {
        return parent._shape[0]
      },
      set: function(w) {
        return parent.width = w
      }
    },
    1: {
      get: function() {
        return parent._shape[1]
      },
      set: function(h) {
        return parent.height = h
      }
    }
  })
  this._shapeVector = shapeVector

  //Initialize all attachments
  rebuildFBO(this)
}

var proto = Framebuffer.prototype

function reshapeFBO(fbo, w, h) {
  //If fbo is invalid, just skip this
  if(fbo._destroyed) {
    throw new Error('gl-fbo: Can\'t resize destroyed FBO')
  }

  //Don't resize if no change in shape
  if( (fbo._shape[0] === w) &&
      (fbo._shape[1] === h) ) {
    return
  }

  var gl = fbo.gl

  //Check parameter ranges
  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
  if( w < 0 || w > maxFBOSize ||
      h < 0 || h > maxFBOSize) {
    throw new Error('gl-fbo: Can\'t resize FBO, invalid dimensions')
  }

  //Update shape
  fbo._shape[0] = w
  fbo._shape[1] = h

  //Save framebuffer state
  var state = saveFBOState(gl)

  //Resize framebuffer attachments
  for(var i=0; i<fbo.color.length; ++i) {
    fbo.color[i].shape = fbo._shape
  }
  if(fbo._color_rb) {
    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._color_rb)
    gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fbo._shape[0], fbo._shape[1])
  }
  if(fbo.depth) {
    fbo.depth.shape = fbo._shape
  }
  if(fbo._depth_rb) {
    gl.bindRenderbuffer(gl.RENDERBUFFER, fbo._depth_rb)
    if(fbo._useDepth && fbo._useStencil) {
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_STENCIL, fbo._shape[0], fbo._shape[1])
    } else if(fbo._useDepth) {
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, fbo._shape[0], fbo._shape[1])
    } else if(fbo._useStencil) {
      gl.renderbufferStorage(gl.RENDERBUFFER, gl.STENCIL_INDEX, fbo._shape[0], fbo._shape[1])
    }
  }

  //Check FBO status after resize, if something broke then die in a fire
  gl.bindFramebuffer(gl.FRAMEBUFFER, fbo.handle)
  var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER)
  if(status !== gl.FRAMEBUFFER_COMPLETE) {
    fbo.dispose()
    restoreFBOState(gl, state)
    throwFBOError(status)
  }

  //Restore framebuffer state
  restoreFBOState(gl, state)
}

Object.defineProperties(proto, {
  'shape': {
    get: function() {
      if(this._destroyed) {
        return [0,0]
      }
      return this._shapeVector
    },
    set: function(x) {
      if(!Array.isArray(x)) {
        x = [x|0, x|0]
      }
      if(x.length !== 2) {
        throw new Error('gl-fbo: Shape vector must be length 2')
      }

      var w = x[0]|0
      var h = x[1]|0
      reshapeFBO(this, w, h)

      return [w, h]
    },
    enumerable: false
  },
  'width': {
    get: function() {
      if(this._destroyed) {
        return 0
      }
      return this._shape[0]
    },
    set: function(w) {
      w = w|0
      reshapeFBO(this, w, this._shape[1])
      return w
    },
    enumerable: false
  },
  'height': {
    get: function() {
      if(this._destroyed) {
        return 0
      }
      return this._shape[1]
    },
    set: function(h) {
      h = h|0
      reshapeFBO(this, this._shape[0], h)
      return h
    },
    enumerable: false
  }
})

proto.bind = function() {
  if(this._destroyed) {
    return
  }
  var gl = this.gl
  gl.bindFramebuffer(gl.FRAMEBUFFER, this.handle)
  gl.viewport(0, 0, this._shape[0], this._shape[1])
}

proto.dispose = function() {
  if(this._destroyed) {
    return
  }
  this._destroyed = true
  var gl = this.gl
  gl.deleteFramebuffer(this.handle)
  this.handle = null
  if(this.depth) {
    this.depth.dispose()
    this.depth = null
  }
  if(this._depth_rb) {
    gl.deleteRenderbuffer(this._depth_rb)
    this._depth_rb = null
  }
  for(var i=0; i<this.color.length; ++i) {
    this.color[i].dispose()
    this.color[i] = null
  }
  if(this._color_rb) {
    gl.deleteRenderbuffer(this._color_rb)
    this._color_rb = null
  }
}

function createFBO(gl, width, height, options) {

  //Update frame buffer error code values
  if(!FRAMEBUFFER_UNSUPPORTED) {
    FRAMEBUFFER_UNSUPPORTED = gl.FRAMEBUFFER_UNSUPPORTED
    FRAMEBUFFER_INCOMPLETE_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT
    FRAMEBUFFER_INCOMPLETE_DIMENSIONS = gl.FRAMEBUFFER_INCOMPLETE_DIMENSIONS
    FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = gl.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
  }

  //Lazily initialize color attachment arrays
  var WEBGL_draw_buffers = gl.getExtension('WEBGL_draw_buffers')
  if(!colorAttachmentArrays && WEBGL_draw_buffers) {
    lazyInitColorAttachments(gl, WEBGL_draw_buffers)
  }

  //Special case: Can accept an array as argument
  if(Array.isArray(width)) {
    options = height
    height = width[1]|0
    width = width[0]|0
  }

  if(typeof width !== 'number') {
    throw new Error('gl-fbo: Missing shape parameter')
  }

  //Validate width/height properties
  var maxFBOSize = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE)
  if(width < 0 || width > maxFBOSize || height < 0 || height > maxFBOSize) {
    throw new Error('gl-fbo: Parameters are too large for FBO')
  }

  //Handle each option type
  options = options || {}

  //Figure out number of color buffers to use
  var numColors = 1
  if('color' in options) {
    numColors = Math.max(options.color|0, 0)
    if(numColors < 0) {
      throw new Error('gl-fbo: Must specify a nonnegative number of colors')
    }
    if(numColors > 1) {
      //Check if multiple render targets supported
      if(!WEBGL_draw_buffers) {
        throw new Error('gl-fbo: Multiple draw buffer extension not supported')
      } else if(numColors > gl.getParameter(WEBGL_draw_buffers.MAX_COLOR_ATTACHMENTS_WEBGL)) {
        throw new Error('gl-fbo: Context does not support ' + numColors + ' draw buffers')
      }
    }
  }

  //Determine whether to use floating point textures
  var colorType = gl.UNSIGNED_BYTE
  var OES_texture_float = gl.getExtension('OES_texture_float')
  if(options.float && numColors > 0) {
    if(!OES_texture_float) {
      throw new Error('gl-fbo: Context does not support floating point textures')
    }
    colorType = gl.FLOAT
  } else if(options.preferFloat && numColors > 0) {
    if(OES_texture_float) {
      colorType = gl.FLOAT
    }
  }

  //Check if we should use depth buffer
  var useDepth = true
  if('depth' in options) {
    useDepth = !!options.depth
  }

  //Check if we should use a stencil buffer
  var useStencil = false
  if('stencil' in options) {
    useStencil = !!options.stencil
  }

  return new Framebuffer(
    gl,
    width,
    height,
    colorType,
    numColors,
    useDepth,
    useStencil,
    WEBGL_draw_buffers)
}

},{"gl-texture2d":239}],140:[function(require,module,exports){

var sprintf = require('sprintf-js').sprintf;
var glConstants = require('gl-constants/lookup');
var shaderName = require('glsl-shader-name');
var addLineNumbers = require('add-line-numbers');

module.exports = formatCompilerError;

function formatCompilerError(errLog, src, type) {
    "use strict";

    var name = shaderName(src) || 'of unknown name (see npm glsl-shader-name)';

    var typeName = 'unknown type';
    if (type !== undefined) {
        typeName = type === glConstants.FRAGMENT_SHADER ? 'fragment' : 'vertex'
    }

    var longForm = sprintf('Error compiling %s shader %s:\n', typeName, name);
    var shortForm = sprintf("%s%s", longForm, errLog);

    var errorStrings = errLog.split('\n');
    var errors = {};

    for (var i = 0; i < errorStrings.length; i++) {
        var errorString = errorStrings[i];
        if (errorString === '') continue;
        var lineNo = parseInt(errorString.split(':')[2]);
        if (isNaN(lineNo)) {
            throw new Error(sprintf('Could not parse error: %s', errorString));
        }
        errors[lineNo] = errorString;
    }

    var lines = addLineNumbers(src).split('\n');

    for (var i = 0; i < lines.length; i++) {
        if (!errors[i+3] && !errors[i+2] && !errors[i+1]) continue;
        var line = lines[i];
        longForm += line + '\n';
        if (errors[i+1]) {
            var e = errors[i+1];
            e = e.substr(e.split(':', 3).join(':').length + 1).trim();
            longForm += sprintf('^^^ %s\n\n', e);
        }
    }

    return {
        long: longForm.trim(),
        short: shortForm.trim()
    };
}


},{"add-line-numbers":4,"gl-constants/lookup":134,"glsl-shader-name":251,"sprintf-js":977}],141:[function(require,module,exports){
'use strict'

module.exports = createHeatmap2D

var bsearch = require('binary-search-bounds')
var iota = require('iota-array')
var pool = require('typedarray-pool')
var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')

var shaders = require('./lib/shaders')

function GLHeatmap2D (
  plot,
  shader,
  pickShader,
  positionBuffer,
  weightBuffer,
  colorBuffer,
  idBuffer) {
  this.plot = plot
  this.shader = shader
  this.pickShader = pickShader
  this.positionBuffer = positionBuffer
  this.weightBuffer = weightBuffer
  this.colorBuffer = colorBuffer
  this.idBuffer = idBuffer
  this.xData = []
  this.yData = []
  this.shape = [0, 0]
  this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
  this.pickOffset = 0
}

var proto = GLHeatmap2D.prototype

var WEIGHTS = [
  0, 0,
  1, 0,
  0, 1,
  1, 0,
  1, 1,
  0, 1
]

proto.draw = (function () {
  var MATRIX = [
    1, 0, 0,
    0, 1, 0,
    0, 0, 1
  ]

  return function () {
    var plot = this.plot
    var shader = this.shader
    var bounds = this.bounds
    var numVertices = this.numVertices

    if (numVertices <= 0) {
      return
    }

    var gl = plot.gl
    var dataBox = plot.dataBox

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    MATRIX[0] = 2.0 * boundX / dataX
    MATRIX[4] = 2.0 * boundY / dataY
    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0

    shader.bind()

    var uniforms = shader.uniforms
    uniforms.viewTransform = MATRIX

    uniforms.shape = this.shape

    var attributes = shader.attributes
    this.positionBuffer.bind()
    attributes.position.pointer()

    this.weightBuffer.bind()
    attributes.weight.pointer(gl.UNSIGNED_BYTE, false)

    this.colorBuffer.bind()
    attributes.color.pointer(gl.UNSIGNED_BYTE, true)

    gl.drawArrays(gl.TRIANGLES, 0, numVertices)
  }
})()

proto.drawPick = (function () {
  var MATRIX = [
    1, 0, 0,
    0, 1, 0,
    0, 0, 1
  ]

  var PICK_VECTOR = [0, 0, 0, 0]

  return function (pickOffset) {
    var plot = this.plot
    var shader = this.pickShader
    var bounds = this.bounds
    var numVertices = this.numVertices

    if (numVertices <= 0) {
      return
    }

    var gl = plot.gl
    var dataBox = plot.dataBox

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX = dataBox[2] - dataBox[0]
    var dataY = dataBox[3] - dataBox[1]

    MATRIX[0] = 2.0 * boundX / dataX
    MATRIX[4] = 2.0 * boundY / dataY
    MATRIX[6] = 2.0 * (bounds[0] - dataBox[0]) / dataX - 1.0
    MATRIX[7] = 2.0 * (bounds[1] - dataBox[1]) / dataY - 1.0

    for (var i = 0; i < 4; ++i) {
      PICK_VECTOR[i] = (pickOffset >> (i * 8)) & 0xff
    }

    this.pickOffset = pickOffset

    shader.bind()

    var uniforms = shader.uniforms
    uniforms.viewTransform = MATRIX
    uniforms.pickOffset = PICK_VECTOR
    uniforms.shape = this.shape

    var attributes = shader.attributes
    this.positionBuffer.bind()
    attributes.position.pointer()

    this.weightBuffer.bind()
    attributes.weight.pointer(gl.UNSIGNED_BYTE, false)

    this.idBuffer.bind()
    attributes.pickId.pointer(gl.UNSIGNED_BYTE, false)

    gl.drawArrays(gl.TRIANGLES, 0, numVertices)

    return pickOffset + this.shape[0] * this.shape[1]
  }
})()

proto.pick = function (x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.shape[0] * this.shape[1]
  if (value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var xData = this.xData
  var yData = this.yData
  return {
    object: this,
    pointId: pointId,
    dataCoord: [
      xData[pointId % this.shape[0]],
      yData[(pointId / this.shape[0]) | 0]]
  }
}

proto.update = function (options) {
  options = options || {}

  var shape = options.shape || [0, 0]

  var x = options.x || iota(shape[0])
  var y = options.y || iota(shape[1])
  var z = options.z || new Float32Array(shape[0] * shape[1])

  this.xData = x
  this.yData = y

  var colorLevels = options.colorLevels || [0]
  var colorValues = options.colorValues || [0, 0, 0, 1]
  var colorCount = colorLevels.length

  var bounds = this.bounds
  var lox = bounds[0] = x[0]
  var loy = bounds[1] = y[0]
  var hix = bounds[2] = x[x.length - 1]
  var hiy = bounds[3] = y[y.length - 1]

  var xs = 1.0 / (hix - lox)
  var ys = 1.0 / (hiy - loy)

  var numX = shape[0]
  var numY = shape[1]

  this.shape = [numX, numY]

  var numVerts = (numX - 1) * (numY - 1) * (WEIGHTS.length >>> 1)

  this.numVertices = numVerts

  var colors = pool.mallocUint8(numVerts * 4)
  var positions = pool.mallocFloat32(numVerts * 2)
  var weights   = pool.mallocUint8 (numVerts * 2)
  var ids = pool.mallocUint32(numVerts)

  var ptr = 0

  for (var j = 0; j < numY - 1; ++j) {
    var yc0 = ys * (y[j] - loy)
    var yc1 = ys * (y[j + 1] - loy)
    for (var i = 0; i < numX - 1; ++i) {
      var xc0 = xs * (x[i] - lox)
      var xc1 = xs * (x[i + 1] - lox)

      for (var dd = 0; dd < WEIGHTS.length; dd += 2) {
        var dx = WEIGHTS[dd]
        var dy = WEIGHTS[dd + 1]
        var offset = (j + dy) * numX + (i + dx)
        var zc = z[offset]
        var colorIdx = bsearch.le(colorLevels, zc)
        var r, g, b, a
        if (colorIdx < 0) {
          r = colorValues[0]
          g = colorValues[1]
          b = colorValues[2]
          a = colorValues[3]
        } else if (colorIdx === colorCount - 1) {
          r = colorValues[4 * colorCount - 4]
          g = colorValues[4 * colorCount - 3]
          b = colorValues[4 * colorCount - 2]
          a = colorValues[4 * colorCount - 1]
        } else {
          var t = (zc - colorLevels[colorIdx]) /
            (colorLevels[colorIdx + 1] - colorLevels[colorIdx])
          var ti = 1.0 - t
          var i0 = 4 * colorIdx
          var i1 = 4 * (colorIdx + 1)
          r = ti * colorValues[i0] + t * colorValues[i1]
          g = ti * colorValues[i0 + 1] + t * colorValues[i1 + 1]
          b = ti * colorValues[i0 + 2] + t * colorValues[i1 + 2]
          a = ti * colorValues[i0 + 3] + t * colorValues[i1 + 3]
        }

        colors[4 * ptr] = 255 * r
        colors[4 * ptr + 1] = 255 * g
        colors[4 * ptr + 2] = 255 * b
        colors[4 * ptr + 3] = 255 * a

        positions[2*ptr] = xc0*.5 + xc1*.5;
        positions[2*ptr+1] = yc0*.5 + yc1*.5;

        weights[2*ptr] = dx;
        weights[2*ptr+1] = dy;

        ids[ptr] = j * numX + i

        ptr += 1
      }
    }
  }

  this.positionBuffer.update(positions)
  this.weightBuffer.update(weights)
  this.colorBuffer.update(colors)
  this.idBuffer.update(ids)

  pool.free(positions)
  pool.free(colors)
  pool.free(weights)
  pool.free(ids)
}

proto.dispose = function () {
  this.shader.dispose()
  this.pickShader.dispose()
  this.positionBuffer.dispose()
  this.weightBuffer.dispose()
  this.colorBuffer.dispose()
  this.idBuffer.dispose()
  this.plot.removeObject(this)
}

function createHeatmap2D (plot, options) {
  var gl = plot.gl

  var shader = createShader(gl, shaders.vertex, shaders.fragment)
  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)

  var positionBuffer = createBuffer(gl)
  var weightBuffer   = createBuffer(gl)
  var colorBuffer = createBuffer(gl)
  var idBuffer = createBuffer(gl)

  var heatmap = new GLHeatmap2D(
    plot,
    shader,
    pickShader,
    positionBuffer,
    weightBuffer,
    colorBuffer,
    idBuffer)

  heatmap.update(options)
  plot.addObject(heatmap)

  return heatmap
}

},{"./lib/shaders":142,"binary-search-bounds":143,"gl-buffer":132,"gl-shader":227,"iota-array":269,"typedarray-pool":992}],142:[function(require,module,exports){
'use strict'



module.exports = {
  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
  vertex:       "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 color;\nattribute vec2 weight;\n\nuniform vec2 shape;\nuniform mat3 viewTransform;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vPosition = viewTransform * vec3( position + (weight-.5)/(shape-1.) , 1.0);\n  fragColor = color;\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n",
  pickFragment: "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\nvarying vec2 vWeight;\n\nuniform vec2 shape;\nuniform vec4 pickOffset;\n\nvoid main() {\n  vec2 d = step(.5, vWeight);\n  vec4 id = fragId + pickOffset;\n  id.x += d.x + d.y*shape.x;\n\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  gl_FragColor = id/255.;\n}\n",
  pickVertex:   "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\nattribute vec2 weight;\n\nuniform vec2 shape;\nuniform mat3 viewTransform;\n\nvarying vec4 fragId;\nvarying vec2 vWeight;\n\nvoid main() {\n  vWeight = weight;\n\n  fragId = pickId;\n\n  vec3 vPosition = viewTransform * vec3( position + (weight-.5)/(shape-1.) , 1.0);\n  gl_Position = vec4(vPosition.xy, 0, vPosition.z);\n}\n"
}

},{}],143:[function(require,module,exports){
arguments[4][54][0].apply(exports,arguments)
},{"dup":54}],144:[function(require,module,exports){


exports.lineVertex    = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo, dHi, dLo;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo, screenShape;\nuniform float width;\n\nvarying vec2 direction;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvec2 project_2_1(vec2 scHi, vec2 scLo, vec2 posHi, vec2 posLo) {\n  return scHi * posHi\n       + scLo * posHi\n       + scHi * posLo\n       + scLo * posLo;\n}\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  vec2 dir = project_2_1(scaleHi, scaleLo, dHi, dLo);\n  vec2 n = 0.5 * width * normalize(screenShape.yx * vec2(dir.y, -dir.x)) / screenShape.xy;\n  vec2 tangent = normalize(screenShape.xy * dir);\n  if(dir.x < 0.0 || (dir.x == 0.0 && dir.y < 0.0)) {\n    direction = -tangent;\n  } else {\n    direction = tangent;\n  }\n  gl_Position = vec4(p + n, 0.0, 1.0);\n}"
exports.lineFragment  = "precision highp float;\n#define GLSLIFY 1\n\nuniform vec4 color;\nuniform vec2 screenShape;\nuniform sampler2D dashPattern;\nuniform float dashLength;\n\nvarying vec2 direction;\n\nvoid main() {\n  float t = fract(dot(direction, gl_FragCoord.xy) / dashLength);\n  vec4 pcolor = color * texture2D(dashPattern, vec2(t, 0.0)).r;\n  gl_FragColor = vec4(pcolor.rgb * pcolor.a, pcolor.a);\n}"
exports.mitreVertex   = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo;\nuniform float radius;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  gl_Position = vec4(p, 0.0, 1.0);\n  gl_PointSize = radius;\n}"
exports.mitreFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  if(length(gl_PointCoord.xy - 0.5) > 0.25) {\n    discard;\n  }\n  gl_FragColor = vec4(color.rgb, color.a);\n}"
exports.pickVertex    = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo, dHi;\nattribute vec4 pick0, pick1;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo, screenShape;\nuniform float width;\n\nvarying vec4 pickA, pickB;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  vec2 n = width * normalize(screenShape.yx * vec2(dHi.y, -dHi.x)) / screenShape.xy;\n  gl_Position = vec4(p + n, 0, 1);\n  pickA = pick0;\n  pickB = pick1;\n}"
exports.pickFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 pickOffset;\n\nvarying vec4 pickA, pickB;\n\nvoid main() {\n  vec4 fragId = vec4(pickA.xyz, 0.0);\n  if(pickB.w > pickA.w) {\n    fragId.xyz = pickB.xyz;\n  }\n\n  fragId += pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  gl_FragColor = fragId / 255.0;\n}"
exports.fillVertex    = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 aHi, aLo, dHi;\n\nuniform vec2 scaleHi, translateHi, scaleLo, translateLo, projectAxis;\nuniform float projectValue, depth;\n\n\nvec2 project_1_0(vec2 scHi, vec2 trHi, vec2 scLo, vec2 trLo, vec2 posHi, vec2 posLo) {\n  return (posHi + trHi) * scHi\n       + (posLo + trLo) * scHi\n       + (posHi + trHi) * scLo\n       + (posLo + trLo) * scLo;\n}\n\n\nvoid main() {\n  vec2 p = project_1_0(scaleHi, translateHi, scaleLo, translateLo, aHi, aLo);\n  if(dHi.y < 0.0 || (dHi.y == 0.0 && dHi.x < 0.0)) {\n    if(dot(p, projectAxis) < projectValue) {\n      p = p * (1.0 - abs(projectAxis)) + projectAxis * projectValue;\n    }\n  }\n  gl_Position = vec4(p, depth, 1);\n}"
exports.fillFragment  = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = vec4(color.rgb * color.a, color.a);\n}"
},{}],145:[function(require,module,exports){
'use strict'

module.exports = createLinePlot

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var createTexture = require('gl-texture2d')
var ndarray = require('ndarray')
var pool = require('typedarray-pool')

var SHADERS = require('./lib/shaders')

function GLLine2D(
  plot,
  dashPattern,
  lineBufferHi,
  lineBufferLo,
  pickBuffer,
  lineShader,
  mitreShader,
  fillShader,
  pickShader) {

  this.plot         = plot
  this.dashPattern  = dashPattern
  this.lineBufferHi = lineBufferHi
  this.lineBufferLo = lineBufferLo
  this.pickBuffer   = pickBuffer
  this.lineShader   = lineShader
  this.mitreShader  = mitreShader
  this.fillShader   = fillShader
  this.pickShader   = pickShader
  this.usingDashes  = false

  this.bounds     = [Infinity, Infinity, -Infinity, -Infinity]
  this.width      = 1
  this.color      = [0, 0, 1, 1]

  //Fill to axes
  this.fill       = [false, false, false, false]
  this.fillColor  = [
    [0, 0, 0, 1],
    [0, 0, 0, 1],
    [0, 0, 0, 1],
    [0, 0, 0, 1]
  ]

  this.data       = null
  this.numPoints  = 0
  this.vertCount  = 0

  this.pickOffset = 0
}

var proto = GLLine2D.prototype

proto.setProjectionModel = (function() {

  var pm = {
    scaleHi: new Float32Array([0, 0]),
    scaleLo: new Float32Array([0, 0]),
    translateHi: new Float32Array([0, 0]),
    translateLo: new Float32Array([0, 0]),
    screenShape: [0, 0]
  }

  return function() {

    var bounds  = this.bounds
    var viewBox = this.plot.viewBox
    var dataBox = this.plot.dataBox

    var boundX  = bounds[2] - bounds[0]
    var boundY  = bounds[3] - bounds[1]
    var dataX   = dataBox[2] - dataBox[0]
    var dataY   = dataBox[3] - dataBox[1]
    var screenX = viewBox[2] - viewBox[0]
    var screenY = viewBox[3] - viewBox[1]

    var scaleX = 2 * boundX / dataX
    var scaleY = 2 * boundY / dataY
    var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
    var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

    pm.scaleHi[0]     = scaleX
    pm.scaleHi[1]     = scaleY
    pm.scaleLo[0]     = scaleX - pm.scaleHi[0]
    pm.scaleLo[1]     = scaleY - pm.scaleHi[1]
    pm.translateHi[0] = translateX
    pm.translateHi[1] = translateY
    pm.translateLo[0] = translateX - pm.translateHi[0]
    pm.translateLo[1] = translateY - pm.translateHi[1]

    pm.screenShape[0] = screenX
    pm.screenShape[1] = screenY

    return pm
  }
})()

proto.setProjectionUniforms = function(uniforms, projectionModel) {
  uniforms.scaleHi = projectionModel.scaleHi
  uniforms.scaleLo = projectionModel.scaleLo
  uniforms.translateHi = projectionModel.translateHi
  uniforms.translateLo = projectionModel.translateLo
  uniforms.screenShape = projectionModel.screenShape
}

proto.draw = (function() {

  var PX_AXIS = [1, 0]
  var NX_AXIS = [-1, 0]
  var PY_AXIS = [0, 1]
  var NY_AXIS = [0, -1]

  return function() {
    var count = this.vertCount

    if(!count) {
      return
    }

    var projectionModel = this.setProjectionModel()

    var plot       = this.plot
    var width      = this.width
    var gl         = plot.gl
    var pixelRatio = plot.pixelRatio

    var color     = this.color

    var fillAttributes = this.fillShader.attributes

    this.lineBufferLo.bind()
    fillAttributes.aLo.pointer(gl.FLOAT, false, 16, 0)

    this.lineBufferHi.bind()

    var fill = this.fill

    if(fill[0] || fill[1] || fill[2] || fill[3]) {

      var fillShader = this.fillShader
      fillShader.bind()

      var fillUniforms = fillShader.uniforms
      this.setProjectionUniforms(fillUniforms, projectionModel)
      fillUniforms.depth = plot.nextDepthValue()

      fillAttributes.aHi.pointer(gl.FLOAT, false, 16, 0)
      fillAttributes.dHi.pointer(gl.FLOAT, false, 16, 8)

      gl.depthMask(true)
      gl.enable(gl.DEPTH_TEST)

      var fillColor = this.fillColor
      if(fill[0]) {
        fillUniforms.color        = fillColor[0]
        fillUniforms.projectAxis  = NX_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      if(fill[1]) {
        fillUniforms.color        = fillColor[1]
        fillUniforms.projectAxis  = NY_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      if(fill[2]) {
        fillUniforms.color        = fillColor[2]
        fillUniforms.projectAxis  = PX_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      if(fill[3]) {
        fillUniforms.color        = fillColor[3]
        fillUniforms.projectAxis  = PY_AXIS
        fillUniforms.projectValue = 1
        gl.drawArrays(gl.TRIANGLES, 0, count)
      }

      gl.depthMask(false)
      gl.disable(gl.DEPTH_TEST)
    }

    var shader = this.lineShader
    shader.bind()

    this.lineBufferLo.bind()
    shader.attributes.aLo.pointer(gl.FLOAT, false, 16, 0)
    shader.attributes.dLo.pointer(gl.FLOAT, false, 16, 8)

    this.lineBufferHi.bind()

    var uniforms = shader.uniforms
    this.setProjectionUniforms(uniforms, projectionModel)
    uniforms.color  = color
    uniforms.width  = width * pixelRatio
    uniforms.dashPattern = this.dashPattern.bind()
    uniforms.dashLength = this.dashLength * pixelRatio

    var attributes = shader.attributes
    attributes.aHi.pointer(gl.FLOAT, false, 16, 0)
    attributes.dHi.pointer(gl.FLOAT, false, 16, 8)

    gl.drawArrays(gl.TRIANGLES, 0, count)

    //Draw mitres
    if(width > 2 && !this.usingDashes) {
      var mshader = this.mitreShader

      this.lineBufferLo.bind()
      mshader.attributes.aLo.pointer(gl.FLOAT, false, 48, 0)

      this.lineBufferHi.bind()
      mshader.bind()

      var muniforms = mshader.uniforms
      this.setProjectionUniforms(muniforms, projectionModel)
      muniforms.color  = color
      muniforms.radius = width * pixelRatio

      mshader.attributes.aHi.pointer(gl.FLOAT, false, 48, 0)
      gl.drawArrays(gl.POINTS, 0, (count / 3) | 0)
    }
  }
})()

proto.drawPick = (function() {

  var PICK_OFFSET = [0, 0, 0, 0]

  return function(pickOffset) {

    var count      = this.vertCount
    var numPoints  = this.numPoints

    this.pickOffset = pickOffset
    if(!count) {
      return pickOffset + numPoints
    }

    var projectionModel = this.setProjectionModel()

    var plot       = this.plot
    var width      = this.width
    var gl         = plot.gl
    var pixelRatio = plot.pickPixelRatio

    var shader     = this.pickShader
    var pickBuffer = this.pickBuffer

    PICK_OFFSET[0] =  pickOffset         & 0xff
    PICK_OFFSET[1] = (pickOffset >>> 8)  & 0xff
    PICK_OFFSET[2] = (pickOffset >>> 16) & 0xff
    PICK_OFFSET[3] =  pickOffset >>> 24

    shader.bind()

    var uniforms = shader.uniforms
    this.setProjectionUniforms(uniforms, projectionModel)
    uniforms.width       = width * pixelRatio
    uniforms.pickOffset  = PICK_OFFSET

    var attributes = shader.attributes

    this.lineBufferHi.bind()
    attributes.aHi.pointer(gl.FLOAT, false, 16, 0)
    attributes.dHi.pointer(gl.FLOAT, false, 16, 8)

    this.lineBufferLo.bind()
    attributes.aLo.pointer(gl.FLOAT, false, 16, 0)

    //attributes.dLo.pointer(gl.FLOAT, false, 16, 8)

    pickBuffer.bind()
    attributes.pick0.pointer(gl.UNSIGNED_BYTE, false, 8, 0)
    attributes.pick1.pointer(gl.UNSIGNED_BYTE, false, 8, 4)

    gl.drawArrays(gl.TRIANGLES, 0, count)

    return pickOffset + numPoints
  }
})()

proto.pick = function(x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.numPoints
  if(value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var points = this.data
  return {
    object:    this,
    pointId:   pointId,
    dataCoord: [points[2 * pointId], points[2 * pointId + 1]]
  }
}

function deepCopy(arr) {
  return arr.map(function(x) {
    return x.slice()
  })
}

proto.update = function(options) {
  options = options || {}

  var gl = this.plot.gl
  var i, j, ptr, ax, ay

  this.color = (options.color || [0, 0, 1, 1]).slice()
  this.width = +(options.width || 1)
  this.fill = (options.fill || [false, false, false, false]).slice()
  this.fillColor = deepCopy(options.fillColor || [
      [0, 0, 0, 1],
      [0, 0, 0, 1],
      [0, 0, 0, 1],
      [0, 0, 0, 1]
    ])

  var dashes = options.dashes || [1]
  var dashLength = 0
  for(i = 0; i < dashes.length; ++i) {
    dashLength += dashes[i]
  }
  var dashData = pool.mallocUint8(dashLength)
  ptr = 0
  var fillColor = 255
  for(i = 0; i < dashes.length; ++i) {
    for(j = 0; j < dashes[i]; ++j) {
      dashData[ptr++] = fillColor
    }
    fillColor ^= 255
  }
  this.dashPattern.dispose()
  this.usingDashes = dashes.length > 1

  this.dashPattern = createTexture(gl, ndarray(dashData, [dashLength, 1, 4], [1, 0, 0]))
  this.dashPattern.minFilter = gl.NEAREST
  this.dashPattern.magFilter = gl.NEAREST
  this.dashLength = dashLength
  pool.free(dashData)

  var data = options.positions
  this.data = data

  var bounds = this.bounds
  bounds[0] = bounds[1] = Infinity
  bounds[2] = bounds[3] = -Infinity

  var numPoints = this.numPoints = data.length >>> 1
  if(numPoints === 0) {
    return
  }

  for(i = 0; i < numPoints; ++i) {
    ax = data[2 * i]
    ay = data[2 * i + 1]

    if (isNaN(ax) || isNaN(ay)) {
      continue
    }

    bounds[0] = Math.min(bounds[0], ax)
    bounds[1] = Math.min(bounds[1], ay)
    bounds[2] = Math.max(bounds[2], ax)
    bounds[3] = Math.max(bounds[3], ay)
  }

  if(bounds[0] === bounds[2]) bounds[2] += 1
  if(bounds[3] === bounds[1]) bounds[3] += 1

  //Generate line data
  var lineData    = pool.mallocFloat64(24 * (numPoints - 1))
  var lineDataHi  = pool.mallocFloat32(24 * (numPoints - 1))
  var lineDataLo  = pool.mallocFloat32(24 * (numPoints - 1))
  var pickData    = pool.mallocUint32(12 * (numPoints - 1))
  var lineDataPtr = lineDataHi.length
  var pickDataPtr = pickData.length
  ptr = numPoints

  var count = 0

  while(ptr > 1) {
    var id = --ptr
    ax = data[2 * ptr]
    ay = data[2 * ptr + 1]

    var next = id - 1
    var bx = data[2 * next]
    var by = data[2 * next + 1]

    if (isNaN(ax) || isNaN(ay) || isNaN(bx) || isNaN(by)) {
      continue
    }

    count += 1

    ax = (ax - bounds[0]) / (bounds[2] - bounds[0])
    ay = (ay - bounds[1]) / (bounds[3] - bounds[1])

    bx = (bx - bounds[0]) / (bounds[2] - bounds[0])
    by = (by - bounds[1]) / (bounds[3] - bounds[1])

    var dx = bx - ax
    var dy = by - ay

    var akey0 = id       | (1 << 24)
    var akey1 = (id - 1)
    var bkey0 = id
    var bkey1 = (id - 1) | (1 << 24)

    lineData[--lineDataPtr] = -dy
    lineData[--lineDataPtr] = -dx
    lineData[--lineDataPtr] = ay
    lineData[--lineDataPtr] = ax
    pickData[--pickDataPtr] = akey0
    pickData[--pickDataPtr] = akey1

    lineData[--lineDataPtr] = dy
    lineData[--lineDataPtr] = dx
    lineData[--lineDataPtr] = by
    lineData[--lineDataPtr] = bx
    pickData[--pickDataPtr] = bkey0
    pickData[--pickDataPtr] = bkey1

    lineData[--lineDataPtr] = -dy
    lineData[--lineDataPtr] = -dx
    lineData[--lineDataPtr] = by
    lineData[--lineDataPtr] = bx
    pickData[--pickDataPtr] = bkey0
    pickData[--pickDataPtr] = bkey1

    lineData[--lineDataPtr] = dy
    lineData[--lineDataPtr] = dx
    lineData[--lineDataPtr] = by
    lineData[--lineDataPtr] = bx
    pickData[--pickDataPtr] = bkey0
    pickData[--pickDataPtr] = bkey1

    lineData[--lineDataPtr] = -dy
    lineData[--lineDataPtr] = -dx
    lineData[--lineDataPtr] = ay
    lineData[--lineDataPtr] = ax
    pickData[--pickDataPtr] = akey0
    pickData[--pickDataPtr] = akey1

    lineData[--lineDataPtr] = dy
    lineData[--lineDataPtr] = dx
    lineData[--lineDataPtr] = ay
    lineData[--lineDataPtr] = ax
    pickData[--pickDataPtr] = akey0
    pickData[--pickDataPtr] = akey1
  }

  for(i = 0; i < lineData.length; i++) {
    lineDataHi[i] = lineData[i]
    lineDataLo[i] = lineData[i] - lineDataHi[i]
  }

  this.vertCount = 6 * count
  this.lineBufferHi.update(lineDataHi.subarray(lineDataPtr))
  this.lineBufferLo.update(lineDataLo.subarray(lineDataPtr))
  this.pickBuffer.update(pickData.subarray(pickDataPtr))

  pool.free(lineData)
  pool.free(lineDataHi)
  pool.free(lineDataLo)
  pool.free(pickData)
}

proto.dispose = function() {
  this.plot.removeObject(this)
  this.lineBufferLo.dispose()
  this.lineBufferHi.dispose()
  this.pickBuffer.dispose()
  this.lineShader.dispose()
  this.mitreShader.dispose()
  this.fillShader.dispose()
  this.pickShader.dispose()
  this.dashPattern.dispose()
}

function createLinePlot(plot, options) {
  var gl = plot.gl
  var lineBufferHi = createBuffer(gl)
  var lineBufferLo = createBuffer(gl)
  var pickBuffer   = createBuffer(gl)
  var dashPattern  = createTexture(gl, [1, 1])
  var lineShader   = createShader(gl, SHADERS.lineVertex,  SHADERS.lineFragment)
  var mitreShader  = createShader(gl, SHADERS.mitreVertex, SHADERS.mitreFragment)
  var fillShader   = createShader(gl, SHADERS.fillVertex,  SHADERS.fillFragment)
  var pickShader   = createShader(gl, SHADERS.pickVertex,  SHADERS.pickFragment)
  var linePlot     = new GLLine2D(
    plot,
    dashPattern,
    lineBufferHi,
    lineBufferLo,
    pickBuffer,
    lineShader,
    mitreShader,
    fillShader,
    pickShader)
  plot.addObject(linePlot)
  linePlot.update(options)
  return linePlot
}
},{"./lib/shaders":144,"gl-buffer":132,"gl-shader":227,"gl-texture2d":239,"ndarray":443,"typedarray-pool":992}],146:[function(require,module,exports){

var createShader  = require('gl-shader')

var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, nextPosition;\nattribute float arcLength, lineWidth;\nattribute vec4 color;\n\nuniform vec2 screenShape;\nuniform float pixelRatio;\nuniform mat4 model, view, projection;\n\nvarying vec4 fragColor;\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\n\nvoid main() {\n  vec4 projected = projection * view * model * vec4(position, 1.0);\n  vec4 tangentClip = projection * view * model * vec4(nextPosition - position, 0.0);\n  vec2 tangent = normalize(screenShape * tangentClip.xy);\n  vec2 offset = 0.5 * pixelRatio * lineWidth * vec2(tangent.y, -tangent.x) / screenShape;\n\n  gl_Position = vec4(projected.xy + projected.w * offset, projected.zw);\n\n  worldPosition = position;\n  pixelArcLength = arcLength;\n  fragColor = color;\n}\n"
var forwardFrag = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3      clipBounds[2];\nuniform sampler2D dashTexture;\nuniform float     dashScale;\nuniform float     opacity;\n\nvarying vec3    worldPosition;\nvarying float   pixelArcLength;\nvarying vec4    fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  float dashWeight = texture2D(dashTexture, vec2(dashScale * pixelArcLength, 0)).r;\n  if(dashWeight < 0.5) {\n    discard;\n  }\n  gl_FragColor = fragColor * opacity;\n}\n"
var pickFrag = "precision mediump float;\n#define GLSLIFY 1\n\n#define FLOAT_MAX  1.70141184e38\n#define FLOAT_MIN  1.17549435e-38\n\nlowp vec4 encode_float_1_0(highp float v) {\n  highp float av = abs(v);\n\n  //Handle special cases\n  if(av < FLOAT_MIN) {\n    return vec4(0.0, 0.0, 0.0, 0.0);\n  } else if(v > FLOAT_MAX) {\n    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;\n  } else if(v < -FLOAT_MAX) {\n    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;\n  }\n\n  highp vec4 c = vec4(0,0,0,0);\n\n  //Compute exponent and mantissa\n  highp float e = floor(log2(av));\n  highp float m = av * pow(2.0, -e) - 1.0;\n  \n  //Unpack mantissa\n  c[1] = floor(128.0 * m);\n  m -= c[1] / 128.0;\n  c[2] = floor(32768.0 * m);\n  m -= c[2] / 32768.0;\n  c[3] = floor(8388608.0 * m);\n  \n  //Unpack exponent\n  highp float ebias = e + 127.0;\n  c[0] = floor(ebias / 2.0);\n  ebias -= c[0] * 2.0;\n  c[1] += floor(ebias) * 128.0; \n\n  //Unpack sign bit\n  c[0] += 128.0 * step(0.0, -v);\n\n  //Scale back to range\n  return c / 255.0;\n}\n\n\n\nuniform float pickId;\nuniform vec3 clipBounds[2];\n\nvarying vec3 worldPosition;\nvarying float pixelArcLength;\nvarying vec4 fragColor;\n\nvoid main() {\n  if(any(lessThan(worldPosition, clipBounds[0])) || any(greaterThan(worldPosition, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId/255.0, encode_float_1_0(pixelArcLength).xyz);\n}"

var ATTRIBUTES = [
  {name: 'position', type: 'vec3'},
  {name: 'nextPosition', type: 'vec3'},
  {name: 'arcLength', type: 'float'},
  {name: 'lineWidth', type: 'float'},
  {name: 'color', type: 'vec4'}
]

exports.createShader = function(gl) {
  return createShader(gl, vertSrc, forwardFrag, null, ATTRIBUTES)
}

exports.createPickShader = function(gl) {
  return createShader(gl, vertSrc, pickFrag, null, ATTRIBUTES)
}

},{"gl-shader":227}],147:[function(require,module,exports){
'use strict'

module.exports = createLinePlot

var createBuffer = require('gl-buffer')
var createVAO = require('gl-vao')
var createTexture = require('gl-texture2d')
var unpackFloat = require('glsl-read-float')
var bsearch = require('binary-search-bounds')
var ndarray = require('ndarray')
var shaders = require('./lib/shaders')

var createShader = shaders.createShader
var createPickShader = shaders.createPickShader

var identity = [1, 0, 0, 0,
  0, 1, 0, 0,
  0, 0, 1, 0,
  0, 0, 0, 1]

function distance (a, b) {
  var s = 0.0
  for (var i = 0; i < 3; ++i) {
    var d = a[i] - b[i]
    s += d * d
  }
  return Math.sqrt(s)
}

function filterClipBounds (bounds) {
  var result = [[-1e6, -1e6, -1e6], [1e6, 1e6, 1e6]]
  for (var i = 0; i < 3; ++i) {
    result[0][i] = Math.max(bounds[0][i], result[0][i])
    result[1][i] = Math.min(bounds[1][i], result[1][i])
  }
  return result
}

function PickResult (tau, position, index, dataCoordinate) {
  this.arcLength = tau
  this.position = position
  this.index = index
  this.dataCoordinate = dataCoordinate
}

function LinePlot (gl, shader, pickShader, buffer, vao, texture) {
  this.gl = gl
  this.shader = shader
  this.pickShader = pickShader
  this.buffer = buffer
  this.vao = vao
  this.clipBounds = [
    [ -Infinity, -Infinity, -Infinity ],
    [ Infinity, Infinity, Infinity ]]
  this.points = []
  this.arcLength = []
  this.vertexCount = 0
  this.bounds = [[0, 0, 0], [0, 0, 0]]
  this.pickId = 0
  this.lineWidth = 1
  this.texture = texture
  this.dashScale = 1
  this.opacity = 1
  this.dirty = true
  this.pixelRatio = 1
}

var proto = LinePlot.prototype

proto.isTransparent = function () {
  return this.opacity < 1
}

proto.isOpaque = function () {
  return this.opacity >= 1
}

proto.pickSlots = 1

proto.setPickBase = function (id) {
  this.pickId = id
}

proto.drawTransparent = proto.draw = function (camera) {
  var gl = this.gl
  var shader = this.shader
  var vao = this.vao
  shader.bind()
  shader.uniforms = {
    model: camera.model || identity,
    view: camera.view || identity,
    projection: camera.projection || identity,
    clipBounds: filterClipBounds(this.clipBounds),
    dashTexture: this.texture.bind(),
    dashScale: this.dashScale / this.arcLength[this.arcLength.length - 1],
    opacity: this.opacity,
    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
    pixelRatio: this.pixelRatio
  }
  vao.bind()
  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
}

proto.drawPick = function (camera) {
  var gl = this.gl
  var shader = this.pickShader
  var vao = this.vao
  shader.bind()
  shader.uniforms = {
    model: camera.model || identity,
    view: camera.view || identity,
    projection: camera.projection || identity,
    pickId: this.pickId,
    clipBounds: filterClipBounds(this.clipBounds),
    screenShape: [gl.drawingBufferWidth, gl.drawingBufferHeight],
    pixelRatio: this.pixelRatio
  }
  vao.bind()
  vao.draw(gl.TRIANGLE_STRIP, this.vertexCount)
}

proto.update = function (options) {
  var i, j

  this.dirty = true

  var connectGaps = !!options.connectGaps

  if ('dashScale' in options) {
    this.dashScale = options.dashScale
  }
  if ('opacity' in options) {
    this.opacity = +options.opacity
  }

  var positions = options.position || options.positions
  if (!positions) {
    return
  }

  // Default color
  var colors = options.color || options.colors || [0, 0, 0, 1]

  var lineWidth = options.lineWidth || 1

  // Recalculate buffer data
  var buffer = []
  var arcLengthArray = []
  var pointArray = []
  var arcLength = 0.0
  var vertexCount = 0
  var bounds = [
    [ Infinity, Infinity, Infinity ],
    [ -Infinity, -Infinity, -Infinity ]]
  var hadGap = false

  fill_loop:
  for (i = 1; i < positions.length; ++i) {
    var a = positions[i - 1]
    var b = positions[i]

    arcLengthArray.push(arcLength)
    pointArray.push(a.slice())

    for (j = 0; j < 3; ++j) {
      if (isNaN(a[j]) || isNaN(b[j]) ||
        !isFinite(a[j]) || !isFinite(b[j])) {

        if (!connectGaps && buffer.length > 0) {
          for (var k = 0; k < 24; ++k) {
            buffer.push(buffer[buffer.length - 12])
          }
          vertexCount += 2
          hadGap = true
        }

        continue fill_loop
      }
      bounds[0][j] = Math.min(bounds[0][j], a[j], b[j])
      bounds[1][j] = Math.max(bounds[1][j], a[j], b[j])
    }

    var acolor, bcolor
    if (Array.isArray(colors[0])) {
      acolor = colors[i - 1]
      bcolor = colors[i]
    } else {
      acolor = bcolor = colors
    }
    if (acolor.length === 3) {
      acolor = [acolor[0], acolor[1], acolor[2], 1]
    }
    if (bcolor.length === 3) {
      bcolor = [bcolor[0], bcolor[1], bcolor[2], 1]
    }

    var w0
    if (Array.isArray(lineWidth)) {
      w0 = lineWidth[i - 1]
    } else {
      w0 = lineWidth
    }

    var t0 = arcLength
    arcLength += distance(a, b)

    if (hadGap) {
      for (j = 0; j < 2; ++j) {
        buffer.push(
          a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3])
      }
      vertexCount += 2
      hadGap = false
    }

    buffer.push(
      a[0], a[1], a[2], b[0], b[1], b[2], t0, w0, acolor[0], acolor[1], acolor[2], acolor[3],
      a[0], a[1], a[2], b[0], b[1], b[2], t0, -w0, acolor[0], acolor[1], acolor[2], acolor[3],
      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, -w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3],
      b[0], b[1], b[2], a[0], a[1], a[2], arcLength, w0, bcolor[0], bcolor[1], bcolor[2], bcolor[3])

    vertexCount += 4
  }
  this.buffer.update(buffer)

  arcLengthArray.push(arcLength)
  pointArray.push(positions[positions.length - 1].slice())

  this.bounds = bounds

  this.vertexCount = vertexCount

  this.points = pointArray
  this.arcLength = arcLengthArray

  if ('dashes' in options) {
    var dashArray = options.dashes

    // Calculate prefix sum
    var prefixSum = dashArray.slice()
    prefixSum.unshift(0)
    for (i = 1; i < prefixSum.length; ++i) {
      prefixSum[i] = prefixSum[i - 1] + prefixSum[i]
    }

    var dashTexture = ndarray(new Array(256 * 4), [256, 1, 4])
    for (i = 0; i < 256; ++i) {
      for (j = 0; j < 4; ++j) {
        dashTexture.set(i, 0, j, 0)
      }
      if (bsearch.le(prefixSum, prefixSum[prefixSum.length - 1] * i / 255.0) & 1) {
        dashTexture.set(i, 0, 0, 0)
      } else {
        dashTexture.set(i, 0, 0, 255)
      }
    }

    this.texture.setPixels(dashTexture)
  }
}

proto.dispose = function () {
  this.shader.dispose()
  this.vao.dispose()
  this.buffer.dispose()
}

proto.pick = function (selection) {
  if (!selection) {
    return null
  }
  if (selection.id !== this.pickId) {
    return null
  }
  var tau = unpackFloat(
    selection.value[0],
    selection.value[1],
    selection.value[2],
    0)
  var index = bsearch.le(this.arcLength, tau)
  if (index < 0) {
    return null
  }
  if (index === this.arcLength.length - 1) {
    return new PickResult(
      this.arcLength[this.arcLength.length - 1],
      this.points[this.points.length - 1].slice(),
      index)
  }
  var a = this.points[index]
  var b = this.points[Math.min(index + 1, this.points.length - 1)]
  var t = (tau - this.arcLength[index]) / (this.arcLength[index + 1] - this.arcLength[index])
  var ti = 1.0 - t
  var x = [0, 0, 0]
  for (var i = 0; i < 3; ++i) {
    x[i] = ti * a[i] + t * b[i]
  }
  var dataIndex = Math.min((t < 0.5) ? index : (index + 1), this.points.length - 1)
  return new PickResult(
    tau,
    x,
    dataIndex,
    this.points[dataIndex])
}

function createLinePlot (options) {
  var gl = options.gl || (options.scene && options.scene.gl)

  var shader = createShader(gl)
  shader.attributes.position.location = 0
  shader.attributes.nextPosition.location = 1
  shader.attributes.arcLength.location = 2
  shader.attributes.lineWidth.location = 3
  shader.attributes.color.location = 4

  var pickShader = createPickShader(gl)
  pickShader.attributes.position.location = 0
  pickShader.attributes.nextPosition.location = 1
  pickShader.attributes.arcLength.location = 2
  pickShader.attributes.lineWidth.location = 3
  pickShader.attributes.color.location = 4

  var buffer = createBuffer(gl)
  var vao = createVAO(gl, [
    {
      'buffer': buffer,
      'size': 3,
      'offset': 0,
      'stride': 48
    },
    {
      'buffer': buffer,
      'size': 3,
      'offset': 12,
      'stride': 48
    },
    {
      'buffer': buffer,
      'size': 1,
      'offset': 24,
      'stride': 48
    },
    {
      'buffer': buffer,
      'size': 1,
      'offset': 28,
      'stride': 48
    },
    {
      'buffer': buffer,
      'size': 4,
      'offset': 32,
      'stride': 48
    }
  ])

  // Create texture for dash pattern
  var defaultTexture = ndarray(new Array(256 * 4), [256, 1, 4])
  for (var i = 0; i < 256 * 4; ++i) {
    defaultTexture.data[i] = 255
  }
  var texture = createTexture(gl, defaultTexture)
  texture.wrap = gl.REPEAT

  var linePlot = new LinePlot(gl, shader, pickShader, buffer, vao, texture)
  linePlot.update(options)
  return linePlot
}

},{"./lib/shaders":146,"binary-search-bounds":32,"gl-buffer":132,"gl-texture2d":239,"gl-vao":243,"glsl-read-float":250,"ndarray":443}],148:[function(require,module,exports){
module.exports = invert

/**
 * Inverts a mat2
 *
 * @alias mat2.invert
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the source matrix
 * @returns {mat2} out
 */
function invert(out, a) {
  var a0 = a[0]
  var a1 = a[1]
  var a2 = a[2]
  var a3 = a[3]
  var det = a0 * a3 - a2 * a1

  if (!det) return null
  det = 1.0 / det

  out[0] =  a3 * det
  out[1] = -a1 * det
  out[2] = -a2 * det
  out[3] =  a0 * det

  return out
}

},{}],149:[function(require,module,exports){
module.exports = invert

/**
 * Inverts a mat3
 *
 * @alias mat3.invert
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the source matrix
 * @returns {mat3} out
 */
function invert(out, a) {
  var a00 = a[0], a01 = a[1], a02 = a[2]
  var a10 = a[3], a11 = a[4], a12 = a[5]
  var a20 = a[6], a21 = a[7], a22 = a[8]

  var b01 = a22 * a11 - a12 * a21
  var b11 = -a22 * a10 + a12 * a20
  var b21 = a21 * a10 - a11 * a20

  // Calculate the determinant
  var det = a00 * b01 + a01 * b11 + a02 * b21

  if (!det) return null
  det = 1.0 / det

  out[0] = b01 * det
  out[1] = (-a22 * a01 + a02 * a21) * det
  out[2] = (a12 * a01 - a02 * a11) * det
  out[3] = b11 * det
  out[4] = (a22 * a00 - a02 * a20) * det
  out[5] = (-a12 * a00 + a02 * a10) * det
  out[6] = b21 * det
  out[7] = (-a21 * a00 + a01 * a20) * det
  out[8] = (a11 * a00 - a01 * a10) * det

  return out
}

},{}],150:[function(require,module,exports){
module.exports = clone;

/**
 * Creates a new mat4 initialized with values from an existing matrix
 *
 * @param {mat4} a matrix to clone
 * @returns {mat4} a new 4x4 matrix
 */
function clone(a) {
    var out = new Float32Array(16);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    out[9] = a[9];
    out[10] = a[10];
    out[11] = a[11];
    out[12] = a[12];
    out[13] = a[13];
    out[14] = a[14];
    out[15] = a[15];
    return out;
};
},{}],151:[function(require,module,exports){
module.exports = create;

/**
 * Creates a new identity mat4
 *
 * @returns {mat4} a new 4x4 matrix
 */
function create() {
    var out = new Float32Array(16);
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = 1;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 1;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
};
},{}],152:[function(require,module,exports){
module.exports = determinant;

/**
 * Calculates the determinant of a mat4
 *
 * @param {mat4} a the source matrix
 * @returns {Number} determinant of a
 */
function determinant(a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],

        b00 = a00 * a11 - a01 * a10,
        b01 = a00 * a12 - a02 * a10,
        b02 = a00 * a13 - a03 * a10,
        b03 = a01 * a12 - a02 * a11,
        b04 = a01 * a13 - a03 * a11,
        b05 = a02 * a13 - a03 * a12,
        b06 = a20 * a31 - a21 * a30,
        b07 = a20 * a32 - a22 * a30,
        b08 = a20 * a33 - a23 * a30,
        b09 = a21 * a32 - a22 * a31,
        b10 = a21 * a33 - a23 * a31,
        b11 = a22 * a33 - a23 * a32;

    // Calculate the determinant
    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
};
},{}],153:[function(require,module,exports){
module.exports = fromQuat;

/**
 * Creates a matrix from a quaternion rotation.
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat4} q Rotation quaternion
 * @returns {mat4} out
 */
function fromQuat(out, q) {
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        yx = y * x2,
        yy = y * y2,
        zx = z * x2,
        zy = z * y2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - yy - zz;
    out[1] = yx + wz;
    out[2] = zx - wy;
    out[3] = 0;

    out[4] = yx - wz;
    out[5] = 1 - xx - zz;
    out[6] = zy + wx;
    out[7] = 0;

    out[8] = zx + wy;
    out[9] = zy - wx;
    out[10] = 1 - xx - yy;
    out[11] = 0;

    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;

    return out;
};
},{}],154:[function(require,module,exports){
module.exports = fromRotationTranslation;

/**
 * Creates a matrix from a quaternion rotation and vector translation
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.translate(dest, vec);
 *     var quatMat = mat4.create();
 *     quat4.toMat4(quat, quatMat);
 *     mat4.multiply(dest, quatMat);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat4} q Rotation quaternion
 * @param {vec3} v Translation vector
 * @returns {mat4} out
 */
function fromRotationTranslation(out, q, v) {
    // Quaternion math
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        xy = x * y2,
        xz = x * z2,
        yy = y * y2,
        yz = y * z2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - (yy + zz);
    out[1] = xy + wz;
    out[2] = xz - wy;
    out[3] = 0;
    out[4] = xy - wz;
    out[5] = 1 - (xx + zz);
    out[6] = yz + wx;
    out[7] = 0;
    out[8] = xz + wy;
    out[9] = yz - wx;
    out[10] = 1 - (xx + yy);
    out[11] = 0;
    out[12] = v[0];
    out[13] = v[1];
    out[14] = v[2];
    out[15] = 1;
    
    return out;
};
},{}],155:[function(require,module,exports){
module.exports = identity;

/**
 * Set a mat4 to the identity matrix
 *
 * @param {mat4} out the receiving matrix
 * @returns {mat4} out
 */
function identity(out) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = 1;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 1;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
};
},{}],156:[function(require,module,exports){
module.exports = invert;

/**
 * Inverts a mat4
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
function invert(out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],

        b00 = a00 * a11 - a01 * a10,
        b01 = a00 * a12 - a02 * a10,
        b02 = a00 * a13 - a03 * a10,
        b03 = a01 * a12 - a02 * a11,
        b04 = a01 * a13 - a03 * a11,
        b05 = a02 * a13 - a03 * a12,
        b06 = a20 * a31 - a21 * a30,
        b07 = a20 * a32 - a22 * a30,
        b08 = a20 * a33 - a23 * a30,
        b09 = a21 * a32 - a22 * a31,
        b10 = a21 * a33 - a23 * a31,
        b11 = a22 * a33 - a23 * a32,

        // Calculate the determinant
        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;

    if (!det) { 
        return null; 
    }
    det = 1.0 / det;

    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;

    return out;
};
},{}],157:[function(require,module,exports){
var identity = require('./identity');

module.exports = lookAt;

/**
 * Generates a look-at matrix with the given eye position, focal point, and up axis
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {vec3} eye Position of the viewer
 * @param {vec3} center Point the viewer is looking at
 * @param {vec3} up vec3 pointing up
 * @returns {mat4} out
 */
function lookAt(out, eye, center, up) {
    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
        eyex = eye[0],
        eyey = eye[1],
        eyez = eye[2],
        upx = up[0],
        upy = up[1],
        upz = up[2],
        centerx = center[0],
        centery = center[1],
        centerz = center[2];

    if (Math.abs(eyex - centerx) < 0.000001 &&
        Math.abs(eyey - centery) < 0.000001 &&
        Math.abs(eyez - centerz) < 0.000001) {
        return identity(out);
    }

    z0 = eyex - centerx;
    z1 = eyey - centery;
    z2 = eyez - centerz;

    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
    z0 *= len;
    z1 *= len;
    z2 *= len;

    x0 = upy * z2 - upz * z1;
    x1 = upz * z0 - upx * z2;
    x2 = upx * z1 - upy * z0;
    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
    if (!len) {
        x0 = 0;
        x1 = 0;
        x2 = 0;
    } else {
        len = 1 / len;
        x0 *= len;
        x1 *= len;
        x2 *= len;
    }

    y0 = z1 * x2 - z2 * x1;
    y1 = z2 * x0 - z0 * x2;
    y2 = z0 * x1 - z1 * x0;

    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
    if (!len) {
        y0 = 0;
        y1 = 0;
        y2 = 0;
    } else {
        len = 1 / len;
        y0 *= len;
        y1 *= len;
        y2 *= len;
    }

    out[0] = x0;
    out[1] = y0;
    out[2] = z0;
    out[3] = 0;
    out[4] = x1;
    out[5] = y1;
    out[6] = z1;
    out[7] = 0;
    out[8] = x2;
    out[9] = y2;
    out[10] = z2;
    out[11] = 0;
    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
    out[15] = 1;

    return out;
};
},{"./identity":155}],158:[function(require,module,exports){
module.exports = multiply;

/**
 * Multiplies two mat4's
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the first operand
 * @param {mat4} b the second operand
 * @returns {mat4} out
 */
function multiply(out, a, b) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];

    // Cache only the current line of the second matrix
    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];  
    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
    return out;
};
},{}],159:[function(require,module,exports){
module.exports = perspective;

/**
 * Generates a perspective projection matrix with the given bounds
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {number} fovy Vertical field of view in radians
 * @param {number} aspect Aspect ratio. typically viewport width/height
 * @param {number} near Near bound of the frustum
 * @param {number} far Far bound of the frustum
 * @returns {mat4} out
 */
function perspective(out, fovy, aspect, near, far) {
    var f = 1.0 / Math.tan(fovy / 2),
        nf = 1 / (near - far);
    out[0] = f / aspect;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = f;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = (far + near) * nf;
    out[11] = -1;
    out[12] = 0;
    out[13] = 0;
    out[14] = (2 * far * near) * nf;
    out[15] = 0;
    return out;
};
},{}],160:[function(require,module,exports){
module.exports = rotate;

/**
 * Rotates a mat4 by the given angle
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @param {vec3} axis the axis to rotate around
 * @returns {mat4} out
 */
function rotate(out, a, rad, axis) {
    var x = axis[0], y = axis[1], z = axis[2],
        len = Math.sqrt(x * x + y * y + z * z),
        s, c, t,
        a00, a01, a02, a03,
        a10, a11, a12, a13,
        a20, a21, a22, a23,
        b00, b01, b02,
        b10, b11, b12,
        b20, b21, b22;

    if (Math.abs(len) < 0.000001) { return null; }
    
    len = 1 / len;
    x *= len;
    y *= len;
    z *= len;

    s = Math.sin(rad);
    c = Math.cos(rad);
    t = 1 - c;

    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];

    // Construct the elements of the rotation matrix
    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;

    // Perform rotation-specific matrix multiplication
    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
    out[11] = a03 * b20 + a13 * b21 + a23 * b22;

    if (a !== out) { // If the source and destination differ, copy the unchanged last row
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }
    return out;
};
},{}],161:[function(require,module,exports){
module.exports = rotateX;

/**
 * Rotates a matrix by the given angle around the X axis
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
function rotateX(out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a10 = a[4],
        a11 = a[5],
        a12 = a[6],
        a13 = a[7],
        a20 = a[8],
        a21 = a[9],
        a22 = a[10],
        a23 = a[11];

    if (a !== out) { // If the source and destination differ, copy the unchanged rows
        out[0]  = a[0];
        out[1]  = a[1];
        out[2]  = a[2];
        out[3]  = a[3];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    out[4] = a10 * c + a20 * s;
    out[5] = a11 * c + a21 * s;
    out[6] = a12 * c + a22 * s;
    out[7] = a13 * c + a23 * s;
    out[8] = a20 * c - a10 * s;
    out[9] = a21 * c - a11 * s;
    out[10] = a22 * c - a12 * s;
    out[11] = a23 * c - a13 * s;
    return out;
};
},{}],162:[function(require,module,exports){
module.exports = rotateY;

/**
 * Rotates a matrix by the given angle around the Y axis
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
function rotateY(out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a00 = a[0],
        a01 = a[1],
        a02 = a[2],
        a03 = a[3],
        a20 = a[8],
        a21 = a[9],
        a22 = a[10],
        a23 = a[11];

    if (a !== out) { // If the source and destination differ, copy the unchanged rows
        out[4]  = a[4];
        out[5]  = a[5];
        out[6]  = a[6];
        out[7]  = a[7];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    out[0] = a00 * c - a20 * s;
    out[1] = a01 * c - a21 * s;
    out[2] = a02 * c - a22 * s;
    out[3] = a03 * c - a23 * s;
    out[8] = a00 * s + a20 * c;
    out[9] = a01 * s + a21 * c;
    out[10] = a02 * s + a22 * c;
    out[11] = a03 * s + a23 * c;
    return out;
};
},{}],163:[function(require,module,exports){
module.exports = rotateZ;

/**
 * Rotates a matrix by the given angle around the Z axis
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
function rotateZ(out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a00 = a[0],
        a01 = a[1],
        a02 = a[2],
        a03 = a[3],
        a10 = a[4],
        a11 = a[5],
        a12 = a[6],
        a13 = a[7];

    if (a !== out) { // If the source and destination differ, copy the unchanged last row
        out[8]  = a[8];
        out[9]  = a[9];
        out[10] = a[10];
        out[11] = a[11];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    out[0] = a00 * c + a10 * s;
    out[1] = a01 * c + a11 * s;
    out[2] = a02 * c + a12 * s;
    out[3] = a03 * c + a13 * s;
    out[4] = a10 * c - a00 * s;
    out[5] = a11 * c - a01 * s;
    out[6] = a12 * c - a02 * s;
    out[7] = a13 * c - a03 * s;
    return out;
};
},{}],164:[function(require,module,exports){
module.exports = scale;

/**
 * Scales the mat4 by the dimensions in the given vec3
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to scale
 * @param {vec3} v the vec3 to scale the matrix by
 * @returns {mat4} out
 **/
function scale(out, a, v) {
    var x = v[0], y = v[1], z = v[2];

    out[0] = a[0] * x;
    out[1] = a[1] * x;
    out[2] = a[2] * x;
    out[3] = a[3] * x;
    out[4] = a[4] * y;
    out[5] = a[5] * y;
    out[6] = a[6] * y;
    out[7] = a[7] * y;
    out[8] = a[8] * z;
    out[9] = a[9] * z;
    out[10] = a[10] * z;
    out[11] = a[11] * z;
    out[12] = a[12];
    out[13] = a[13];
    out[14] = a[14];
    out[15] = a[15];
    return out;
};
},{}],165:[function(require,module,exports){
module.exports = translate;

/**
 * Translate a mat4 by the given vector
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to translate
 * @param {vec3} v vector to translate by
 * @returns {mat4} out
 */
function translate(out, a, v) {
    var x = v[0], y = v[1], z = v[2],
        a00, a01, a02, a03,
        a10, a11, a12, a13,
        a20, a21, a22, a23;

    if (a === out) {
        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
    } else {
        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];

        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;

        out[12] = a00 * x + a10 * y + a20 * z + a[12];
        out[13] = a01 * x + a11 * y + a21 * z + a[13];
        out[14] = a02 * x + a12 * y + a22 * z + a[14];
        out[15] = a03 * x + a13 * y + a23 * z + a[15];
    }

    return out;
};
},{}],166:[function(require,module,exports){
module.exports = transpose;

/**
 * Transpose the values of a mat4
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
function transpose(out, a) {
    // If we are transposing ourselves we can skip a few steps but have to cache some values
    if (out === a) {
        var a01 = a[1], a02 = a[2], a03 = a[3],
            a12 = a[6], a13 = a[7],
            a23 = a[11];

        out[1] = a[4];
        out[2] = a[8];
        out[3] = a[12];
        out[4] = a01;
        out[6] = a[9];
        out[7] = a[13];
        out[8] = a02;
        out[9] = a12;
        out[11] = a[14];
        out[12] = a03;
        out[13] = a13;
        out[14] = a23;
    } else {
        out[0] = a[0];
        out[1] = a[4];
        out[2] = a[8];
        out[3] = a[12];
        out[4] = a[1];
        out[5] = a[5];
        out[6] = a[9];
        out[7] = a[13];
        out[8] = a[2];
        out[9] = a[6];
        out[10] = a[10];
        out[11] = a[14];
        out[12] = a[3];
        out[13] = a[7];
        out[14] = a[11];
        out[15] = a[15];
    }
    
    return out;
};
},{}],167:[function(require,module,exports){
'use strict'

module.exports = invert

var invert2 = require('gl-mat2/invert')
var invert3 = require('gl-mat3/invert')
var invert4 = require('gl-mat4/invert')

function invert(out, M) {
  switch(M.length) {
    case 0:
    break
    case 1:
      out[0] = 1.0 / M[0]
    break
    case 4:
      invert2(out, M)
    break
    case 9:
      invert3(out, M)
    break
    case 16:
      invert4(out, M)
    break
    default:
      throw new Error('currently supports matrices up to 4x4')
    break
  }
  return out
}
},{"gl-mat2/invert":148,"gl-mat3/invert":149,"gl-mat4/invert":156}],168:[function(require,module,exports){
/**
 * @fileoverview gl-matrix - High performance matrix and vector operations
 * @author Brandon Jones
 * @author Colin MacKenzie IV
 * @version 2.3.2
 */

/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */
// END HEADER

exports.glMatrix = require("./gl-matrix/common.js");
exports.mat2 = require("./gl-matrix/mat2.js");
exports.mat2d = require("./gl-matrix/mat2d.js");
exports.mat3 = require("./gl-matrix/mat3.js");
exports.mat4 = require("./gl-matrix/mat4.js");
exports.quat = require("./gl-matrix/quat.js");
exports.vec2 = require("./gl-matrix/vec2.js");
exports.vec3 = require("./gl-matrix/vec3.js");
exports.vec4 = require("./gl-matrix/vec4.js");
},{"./gl-matrix/common.js":169,"./gl-matrix/mat2.js":170,"./gl-matrix/mat2d.js":171,"./gl-matrix/mat3.js":172,"./gl-matrix/mat4.js":173,"./gl-matrix/quat.js":174,"./gl-matrix/vec2.js":175,"./gl-matrix/vec3.js":176,"./gl-matrix/vec4.js":177}],169:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

/**
 * @class Common utilities
 * @name glMatrix
 */
var glMatrix = {};

// Configuration Constants
glMatrix.EPSILON = 0.000001;
glMatrix.ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
glMatrix.RANDOM = Math.random;
glMatrix.ENABLE_SIMD = false;

// Capability detection
glMatrix.SIMD_AVAILABLE = (glMatrix.ARRAY_TYPE === Float32Array) && ('SIMD' in this);
glMatrix.USE_SIMD = glMatrix.ENABLE_SIMD && glMatrix.SIMD_AVAILABLE;

/**
 * Sets the type of array used when creating new vectors and matrices
 *
 * @param {Type} type Array type, such as Float32Array or Array
 */
glMatrix.setMatrixArrayType = function(type) {
    glMatrix.ARRAY_TYPE = type;
}

var degree = Math.PI / 180;

/**
* Convert Degree To Radian
*
* @param {Number} Angle in Degrees
*/
glMatrix.toRadian = function(a){
     return a * degree;
}

/**
 * Tests whether or not the arguments have approximately the same value, within an absolute
 * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less 
 * than or equal to 1.0, and a relative tolerance is used for larger values)
 * 
 * @param {Number} a The first number to test.
 * @param {Number} b The second number to test.
 * @returns {Boolean} True if the numbers are approximately equal, false otherwise.
 */
glMatrix.equals = function(a, b) {
	return Math.abs(a - b) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a), Math.abs(b));
}

module.exports = glMatrix;

},{}],170:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 2x2 Matrix
 * @name mat2
 */
var mat2 = {};

/**
 * Creates a new identity mat2
 *
 * @returns {mat2} a new 2x2 matrix
 */
mat2.create = function() {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    return out;
};

/**
 * Creates a new mat2 initialized with values from an existing matrix
 *
 * @param {mat2} a matrix to clone
 * @returns {mat2} a new 2x2 matrix
 */
mat2.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    return out;
};

/**
 * Copy the values from one mat2 to another
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the source matrix
 * @returns {mat2} out
 */
mat2.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    return out;
};

/**
 * Set a mat2 to the identity matrix
 *
 * @param {mat2} out the receiving matrix
 * @returns {mat2} out
 */
mat2.identity = function(out) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    return out;
};

/**
 * Create a new mat2 with the given values
 *
 * @param {Number} m00 Component in column 0, row 0 position (index 0)
 * @param {Number} m01 Component in column 0, row 1 position (index 1)
 * @param {Number} m10 Component in column 1, row 0 position (index 2)
 * @param {Number} m11 Component in column 1, row 1 position (index 3)
 * @returns {mat2} out A new 2x2 matrix
 */
mat2.fromValues = function(m00, m01, m10, m11) {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = m00;
    out[1] = m01;
    out[2] = m10;
    out[3] = m11;
    return out;
};

/**
 * Set the components of a mat2 to the given values
 *
 * @param {mat2} out the receiving matrix
 * @param {Number} m00 Component in column 0, row 0 position (index 0)
 * @param {Number} m01 Component in column 0, row 1 position (index 1)
 * @param {Number} m10 Component in column 1, row 0 position (index 2)
 * @param {Number} m11 Component in column 1, row 1 position (index 3)
 * @returns {mat2} out
 */
mat2.set = function(out, m00, m01, m10, m11) {
    out[0] = m00;
    out[1] = m01;
    out[2] = m10;
    out[3] = m11;
    return out;
};


/**
 * Transpose the values of a mat2
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the source matrix
 * @returns {mat2} out
 */
mat2.transpose = function(out, a) {
    // If we are transposing ourselves we can skip a few steps but have to cache some values
    if (out === a) {
        var a1 = a[1];
        out[1] = a[2];
        out[2] = a1;
    } else {
        out[0] = a[0];
        out[1] = a[2];
        out[2] = a[1];
        out[3] = a[3];
    }
    
    return out;
};

/**
 * Inverts a mat2
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the source matrix
 * @returns {mat2} out
 */
mat2.invert = function(out, a) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],

        // Calculate the determinant
        det = a0 * a3 - a2 * a1;

    if (!det) {
        return null;
    }
    det = 1.0 / det;
    
    out[0] =  a3 * det;
    out[1] = -a1 * det;
    out[2] = -a2 * det;
    out[3] =  a0 * det;

    return out;
};

/**
 * Calculates the adjugate of a mat2
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the source matrix
 * @returns {mat2} out
 */
mat2.adjoint = function(out, a) {
    // Caching this value is nessecary if out == a
    var a0 = a[0];
    out[0] =  a[3];
    out[1] = -a[1];
    out[2] = -a[2];
    out[3] =  a0;

    return out;
};

/**
 * Calculates the determinant of a mat2
 *
 * @param {mat2} a the source matrix
 * @returns {Number} determinant of a
 */
mat2.determinant = function (a) {
    return a[0] * a[3] - a[2] * a[1];
};

/**
 * Multiplies two mat2's
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the first operand
 * @param {mat2} b the second operand
 * @returns {mat2} out
 */
mat2.multiply = function (out, a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
    out[0] = a0 * b0 + a2 * b1;
    out[1] = a1 * b0 + a3 * b1;
    out[2] = a0 * b2 + a2 * b3;
    out[3] = a1 * b2 + a3 * b3;
    return out;
};

/**
 * Alias for {@link mat2.multiply}
 * @function
 */
mat2.mul = mat2.multiply;

/**
 * Rotates a mat2 by the given angle
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat2} out
 */
mat2.rotate = function (out, a, rad) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
        s = Math.sin(rad),
        c = Math.cos(rad);
    out[0] = a0 *  c + a2 * s;
    out[1] = a1 *  c + a3 * s;
    out[2] = a0 * -s + a2 * c;
    out[3] = a1 * -s + a3 * c;
    return out;
};

/**
 * Scales the mat2 by the dimensions in the given vec2
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the matrix to rotate
 * @param {vec2} v the vec2 to scale the matrix by
 * @returns {mat2} out
 **/
mat2.scale = function(out, a, v) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
        v0 = v[0], v1 = v[1];
    out[0] = a0 * v0;
    out[1] = a1 * v0;
    out[2] = a2 * v1;
    out[3] = a3 * v1;
    return out;
};

/**
 * Creates a matrix from a given angle
 * This is equivalent to (but much faster than):
 *
 *     mat2.identity(dest);
 *     mat2.rotate(dest, dest, rad);
 *
 * @param {mat2} out mat2 receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat2} out
 */
mat2.fromRotation = function(out, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad);
    out[0] = c;
    out[1] = s;
    out[2] = -s;
    out[3] = c;
    return out;
}

/**
 * Creates a matrix from a vector scaling
 * This is equivalent to (but much faster than):
 *
 *     mat2.identity(dest);
 *     mat2.scale(dest, dest, vec);
 *
 * @param {mat2} out mat2 receiving operation result
 * @param {vec2} v Scaling vector
 * @returns {mat2} out
 */
mat2.fromScaling = function(out, v) {
    out[0] = v[0];
    out[1] = 0;
    out[2] = 0;
    out[3] = v[1];
    return out;
}

/**
 * Returns a string representation of a mat2
 *
 * @param {mat2} mat matrix to represent as a string
 * @returns {String} string representation of the matrix
 */
mat2.str = function (a) {
    return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
};

/**
 * Returns Frobenius norm of a mat2
 *
 * @param {mat2} a the matrix to calculate Frobenius norm of
 * @returns {Number} Frobenius norm
 */
mat2.frob = function (a) {
    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
};

/**
 * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
 * @param {mat2} L the lower triangular matrix 
 * @param {mat2} D the diagonal matrix 
 * @param {mat2} U the upper triangular matrix 
 * @param {mat2} a the input matrix to factorize
 */

mat2.LDU = function (L, D, U, a) { 
    L[2] = a[2]/a[0]; 
    U[0] = a[0]; 
    U[1] = a[1]; 
    U[3] = a[3] - L[2] * U[1]; 
    return [L, D, U];       
}; 

/**
 * Adds two mat2's
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the first operand
 * @param {mat2} b the second operand
 * @returns {mat2} out
 */
mat2.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    out[2] = a[2] + b[2];
    out[3] = a[3] + b[3];
    return out;
};

/**
 * Subtracts matrix b from matrix a
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the first operand
 * @param {mat2} b the second operand
 * @returns {mat2} out
 */
mat2.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    out[2] = a[2] - b[2];
    out[3] = a[3] - b[3];
    return out;
};

/**
 * Alias for {@link mat2.subtract}
 * @function
 */
mat2.sub = mat2.subtract;

/**
 * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
 *
 * @param {mat2} a The first matrix.
 * @param {mat2} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat2.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
};

/**
 * Returns whether or not the matrices have approximately the same elements in the same position.
 *
 * @param {mat2} a The first matrix.
 * @param {mat2} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat2.equals = function (a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
};

/**
 * Multiply each element of the matrix by a scalar.
 *
 * @param {mat2} out the receiving matrix
 * @param {mat2} a the matrix to scale
 * @param {Number} b amount to scale the matrix's elements by
 * @returns {mat2} out
 */
mat2.multiplyScalar = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    out[2] = a[2] * b;
    out[3] = a[3] * b;
    return out;
};

/**
 * Adds two mat2's after multiplying each element of the second operand by a scalar value.
 *
 * @param {mat2} out the receiving vector
 * @param {mat2} a the first operand
 * @param {mat2} b the second operand
 * @param {Number} scale the amount to scale b's elements by before adding
 * @returns {mat2} out
 */
mat2.multiplyScalarAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    out[2] = a[2] + (b[2] * scale);
    out[3] = a[3] + (b[3] * scale);
    return out;
};

module.exports = mat2;

},{"./common.js":169}],171:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 2x3 Matrix
 * @name mat2d
 * 
 * @description 
 * A mat2d contains six elements defined as:
 * <pre>
 * [a, c, tx,
 *  b, d, ty]
 * </pre>
 * This is a short form for the 3x3 matrix:
 * <pre>
 * [a, c, tx,
 *  b, d, ty,
 *  0, 0, 1]
 * </pre>
 * The last row is ignored so the array is shorter and operations are faster.
 */
var mat2d = {};

/**
 * Creates a new identity mat2d
 *
 * @returns {mat2d} a new 2x3 matrix
 */
mat2d.create = function() {
    var out = new glMatrix.ARRAY_TYPE(6);
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    out[4] = 0;
    out[5] = 0;
    return out;
};

/**
 * Creates a new mat2d initialized with values from an existing matrix
 *
 * @param {mat2d} a matrix to clone
 * @returns {mat2d} a new 2x3 matrix
 */
mat2d.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(6);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    return out;
};

/**
 * Copy the values from one mat2d to another
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the source matrix
 * @returns {mat2d} out
 */
mat2d.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    return out;
};

/**
 * Set a mat2d to the identity matrix
 *
 * @param {mat2d} out the receiving matrix
 * @returns {mat2d} out
 */
mat2d.identity = function(out) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    out[4] = 0;
    out[5] = 0;
    return out;
};

/**
 * Create a new mat2d with the given values
 *
 * @param {Number} a Component A (index 0)
 * @param {Number} b Component B (index 1)
 * @param {Number} c Component C (index 2)
 * @param {Number} d Component D (index 3)
 * @param {Number} tx Component TX (index 4)
 * @param {Number} ty Component TY (index 5)
 * @returns {mat2d} A new mat2d
 */
mat2d.fromValues = function(a, b, c, d, tx, ty) {
    var out = new glMatrix.ARRAY_TYPE(6);
    out[0] = a;
    out[1] = b;
    out[2] = c;
    out[3] = d;
    out[4] = tx;
    out[5] = ty;
    return out;
};

/**
 * Set the components of a mat2d to the given values
 *
 * @param {mat2d} out the receiving matrix
 * @param {Number} a Component A (index 0)
 * @param {Number} b Component B (index 1)
 * @param {Number} c Component C (index 2)
 * @param {Number} d Component D (index 3)
 * @param {Number} tx Component TX (index 4)
 * @param {Number} ty Component TY (index 5)
 * @returns {mat2d} out
 */
mat2d.set = function(out, a, b, c, d, tx, ty) {
    out[0] = a;
    out[1] = b;
    out[2] = c;
    out[3] = d;
    out[4] = tx;
    out[5] = ty;
    return out;
};

/**
 * Inverts a mat2d
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the source matrix
 * @returns {mat2d} out
 */
mat2d.invert = function(out, a) {
    var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
        atx = a[4], aty = a[5];

    var det = aa * ad - ab * ac;
    if(!det){
        return null;
    }
    det = 1.0 / det;

    out[0] = ad * det;
    out[1] = -ab * det;
    out[2] = -ac * det;
    out[3] = aa * det;
    out[4] = (ac * aty - ad * atx) * det;
    out[5] = (ab * atx - aa * aty) * det;
    return out;
};

/**
 * Calculates the determinant of a mat2d
 *
 * @param {mat2d} a the source matrix
 * @returns {Number} determinant of a
 */
mat2d.determinant = function (a) {
    return a[0] * a[3] - a[1] * a[2];
};

/**
 * Multiplies two mat2d's
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the first operand
 * @param {mat2d} b the second operand
 * @returns {mat2d} out
 */
mat2d.multiply = function (out, a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
    out[0] = a0 * b0 + a2 * b1;
    out[1] = a1 * b0 + a3 * b1;
    out[2] = a0 * b2 + a2 * b3;
    out[3] = a1 * b2 + a3 * b3;
    out[4] = a0 * b4 + a2 * b5 + a4;
    out[5] = a1 * b4 + a3 * b5 + a5;
    return out;
};

/**
 * Alias for {@link mat2d.multiply}
 * @function
 */
mat2d.mul = mat2d.multiply;

/**
 * Rotates a mat2d by the given angle
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat2d} out
 */
mat2d.rotate = function (out, a, rad) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
        s = Math.sin(rad),
        c = Math.cos(rad);
    out[0] = a0 *  c + a2 * s;
    out[1] = a1 *  c + a3 * s;
    out[2] = a0 * -s + a2 * c;
    out[3] = a1 * -s + a3 * c;
    out[4] = a4;
    out[5] = a5;
    return out;
};

/**
 * Scales the mat2d by the dimensions in the given vec2
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the matrix to translate
 * @param {vec2} v the vec2 to scale the matrix by
 * @returns {mat2d} out
 **/
mat2d.scale = function(out, a, v) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
        v0 = v[0], v1 = v[1];
    out[0] = a0 * v0;
    out[1] = a1 * v0;
    out[2] = a2 * v1;
    out[3] = a3 * v1;
    out[4] = a4;
    out[5] = a5;
    return out;
};

/**
 * Translates the mat2d by the dimensions in the given vec2
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the matrix to translate
 * @param {vec2} v the vec2 to translate the matrix by
 * @returns {mat2d} out
 **/
mat2d.translate = function(out, a, v) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
        v0 = v[0], v1 = v[1];
    out[0] = a0;
    out[1] = a1;
    out[2] = a2;
    out[3] = a3;
    out[4] = a0 * v0 + a2 * v1 + a4;
    out[5] = a1 * v0 + a3 * v1 + a5;
    return out;
};

/**
 * Creates a matrix from a given angle
 * This is equivalent to (but much faster than):
 *
 *     mat2d.identity(dest);
 *     mat2d.rotate(dest, dest, rad);
 *
 * @param {mat2d} out mat2d receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat2d} out
 */
mat2d.fromRotation = function(out, rad) {
    var s = Math.sin(rad), c = Math.cos(rad);
    out[0] = c;
    out[1] = s;
    out[2] = -s;
    out[3] = c;
    out[4] = 0;
    out[5] = 0;
    return out;
}

/**
 * Creates a matrix from a vector scaling
 * This is equivalent to (but much faster than):
 *
 *     mat2d.identity(dest);
 *     mat2d.scale(dest, dest, vec);
 *
 * @param {mat2d} out mat2d receiving operation result
 * @param {vec2} v Scaling vector
 * @returns {mat2d} out
 */
mat2d.fromScaling = function(out, v) {
    out[0] = v[0];
    out[1] = 0;
    out[2] = 0;
    out[3] = v[1];
    out[4] = 0;
    out[5] = 0;
    return out;
}

/**
 * Creates a matrix from a vector translation
 * This is equivalent to (but much faster than):
 *
 *     mat2d.identity(dest);
 *     mat2d.translate(dest, dest, vec);
 *
 * @param {mat2d} out mat2d receiving operation result
 * @param {vec2} v Translation vector
 * @returns {mat2d} out
 */
mat2d.fromTranslation = function(out, v) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    out[4] = v[0];
    out[5] = v[1];
    return out;
}

/**
 * Returns a string representation of a mat2d
 *
 * @param {mat2d} a matrix to represent as a string
 * @returns {String} string representation of the matrix
 */
mat2d.str = function (a) {
    return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
                    a[3] + ', ' + a[4] + ', ' + a[5] + ')';
};

/**
 * Returns Frobenius norm of a mat2d
 *
 * @param {mat2d} a the matrix to calculate Frobenius norm of
 * @returns {Number} Frobenius norm
 */
mat2d.frob = function (a) { 
    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
}; 

/**
 * Adds two mat2d's
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the first operand
 * @param {mat2d} b the second operand
 * @returns {mat2d} out
 */
mat2d.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    out[2] = a[2] + b[2];
    out[3] = a[3] + b[3];
    out[4] = a[4] + b[4];
    out[5] = a[5] + b[5];
    return out;
};

/**
 * Subtracts matrix b from matrix a
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the first operand
 * @param {mat2d} b the second operand
 * @returns {mat2d} out
 */
mat2d.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    out[2] = a[2] - b[2];
    out[3] = a[3] - b[3];
    out[4] = a[4] - b[4];
    out[5] = a[5] - b[5];
    return out;
};

/**
 * Alias for {@link mat2d.subtract}
 * @function
 */
mat2d.sub = mat2d.subtract;

/**
 * Multiply each element of the matrix by a scalar.
 *
 * @param {mat2d} out the receiving matrix
 * @param {mat2d} a the matrix to scale
 * @param {Number} b amount to scale the matrix's elements by
 * @returns {mat2d} out
 */
mat2d.multiplyScalar = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    out[2] = a[2] * b;
    out[3] = a[3] * b;
    out[4] = a[4] * b;
    out[5] = a[5] * b;
    return out;
};

/**
 * Adds two mat2d's after multiplying each element of the second operand by a scalar value.
 *
 * @param {mat2d} out the receiving vector
 * @param {mat2d} a the first operand
 * @param {mat2d} b the second operand
 * @param {Number} scale the amount to scale b's elements by before adding
 * @returns {mat2d} out
 */
mat2d.multiplyScalarAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    out[2] = a[2] + (b[2] * scale);
    out[3] = a[3] + (b[3] * scale);
    out[4] = a[4] + (b[4] * scale);
    out[5] = a[5] + (b[5] * scale);
    return out;
};

/**
 * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
 *
 * @param {mat2d} a The first matrix.
 * @param {mat2d} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat2d.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];
};

/**
 * Returns whether or not the matrices have approximately the same elements in the same position.
 *
 * @param {mat2d} a The first matrix.
 * @param {mat2d} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat2d.equals = function (a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5];
    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)));
};

module.exports = mat2d;

},{"./common.js":169}],172:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 3x3 Matrix
 * @name mat3
 */
var mat3 = {};

/**
 * Creates a new identity mat3
 *
 * @returns {mat3} a new 3x3 matrix
 */
mat3.create = function() {
    var out = new glMatrix.ARRAY_TYPE(9);
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 1;
    out[5] = 0;
    out[6] = 0;
    out[7] = 0;
    out[8] = 1;
    return out;
};

/**
 * Copies the upper-left 3x3 values into the given mat3.
 *
 * @param {mat3} out the receiving 3x3 matrix
 * @param {mat4} a   the source 4x4 matrix
 * @returns {mat3} out
 */
mat3.fromMat4 = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[4];
    out[4] = a[5];
    out[5] = a[6];
    out[6] = a[8];
    out[7] = a[9];
    out[8] = a[10];
    return out;
};

/**
 * Creates a new mat3 initialized with values from an existing matrix
 *
 * @param {mat3} a matrix to clone
 * @returns {mat3} a new 3x3 matrix
 */
mat3.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(9);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    return out;
};

/**
 * Copy the values from one mat3 to another
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the source matrix
 * @returns {mat3} out
 */
mat3.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    return out;
};

/**
 * Create a new mat3 with the given values
 *
 * @param {Number} m00 Component in column 0, row 0 position (index 0)
 * @param {Number} m01 Component in column 0, row 1 position (index 1)
 * @param {Number} m02 Component in column 0, row 2 position (index 2)
 * @param {Number} m10 Component in column 1, row 0 position (index 3)
 * @param {Number} m11 Component in column 1, row 1 position (index 4)
 * @param {Number} m12 Component in column 1, row 2 position (index 5)
 * @param {Number} m20 Component in column 2, row 0 position (index 6)
 * @param {Number} m21 Component in column 2, row 1 position (index 7)
 * @param {Number} m22 Component in column 2, row 2 position (index 8)
 * @returns {mat3} A new mat3
 */
mat3.fromValues = function(m00, m01, m02, m10, m11, m12, m20, m21, m22) {
    var out = new glMatrix.ARRAY_TYPE(9);
    out[0] = m00;
    out[1] = m01;
    out[2] = m02;
    out[3] = m10;
    out[4] = m11;
    out[5] = m12;
    out[6] = m20;
    out[7] = m21;
    out[8] = m22;
    return out;
};

/**
 * Set the components of a mat3 to the given values
 *
 * @param {mat3} out the receiving matrix
 * @param {Number} m00 Component in column 0, row 0 position (index 0)
 * @param {Number} m01 Component in column 0, row 1 position (index 1)
 * @param {Number} m02 Component in column 0, row 2 position (index 2)
 * @param {Number} m10 Component in column 1, row 0 position (index 3)
 * @param {Number} m11 Component in column 1, row 1 position (index 4)
 * @param {Number} m12 Component in column 1, row 2 position (index 5)
 * @param {Number} m20 Component in column 2, row 0 position (index 6)
 * @param {Number} m21 Component in column 2, row 1 position (index 7)
 * @param {Number} m22 Component in column 2, row 2 position (index 8)
 * @returns {mat3} out
 */
mat3.set = function(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {
    out[0] = m00;
    out[1] = m01;
    out[2] = m02;
    out[3] = m10;
    out[4] = m11;
    out[5] = m12;
    out[6] = m20;
    out[7] = m21;
    out[8] = m22;
    return out;
};

/**
 * Set a mat3 to the identity matrix
 *
 * @param {mat3} out the receiving matrix
 * @returns {mat3} out
 */
mat3.identity = function(out) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 1;
    out[5] = 0;
    out[6] = 0;
    out[7] = 0;
    out[8] = 1;
    return out;
};

/**
 * Transpose the values of a mat3
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the source matrix
 * @returns {mat3} out
 */
mat3.transpose = function(out, a) {
    // If we are transposing ourselves we can skip a few steps but have to cache some values
    if (out === a) {
        var a01 = a[1], a02 = a[2], a12 = a[5];
        out[1] = a[3];
        out[2] = a[6];
        out[3] = a01;
        out[5] = a[7];
        out[6] = a02;
        out[7] = a12;
    } else {
        out[0] = a[0];
        out[1] = a[3];
        out[2] = a[6];
        out[3] = a[1];
        out[4] = a[4];
        out[5] = a[7];
        out[6] = a[2];
        out[7] = a[5];
        out[8] = a[8];
    }
    
    return out;
};

/**
 * Inverts a mat3
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the source matrix
 * @returns {mat3} out
 */
mat3.invert = function(out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2],
        a10 = a[3], a11 = a[4], a12 = a[5],
        a20 = a[6], a21 = a[7], a22 = a[8],

        b01 = a22 * a11 - a12 * a21,
        b11 = -a22 * a10 + a12 * a20,
        b21 = a21 * a10 - a11 * a20,

        // Calculate the determinant
        det = a00 * b01 + a01 * b11 + a02 * b21;

    if (!det) { 
        return null; 
    }
    det = 1.0 / det;

    out[0] = b01 * det;
    out[1] = (-a22 * a01 + a02 * a21) * det;
    out[2] = (a12 * a01 - a02 * a11) * det;
    out[3] = b11 * det;
    out[4] = (a22 * a00 - a02 * a20) * det;
    out[5] = (-a12 * a00 + a02 * a10) * det;
    out[6] = b21 * det;
    out[7] = (-a21 * a00 + a01 * a20) * det;
    out[8] = (a11 * a00 - a01 * a10) * det;
    return out;
};

/**
 * Calculates the adjugate of a mat3
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the source matrix
 * @returns {mat3} out
 */
mat3.adjoint = function(out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2],
        a10 = a[3], a11 = a[4], a12 = a[5],
        a20 = a[6], a21 = a[7], a22 = a[8];

    out[0] = (a11 * a22 - a12 * a21);
    out[1] = (a02 * a21 - a01 * a22);
    out[2] = (a01 * a12 - a02 * a11);
    out[3] = (a12 * a20 - a10 * a22);
    out[4] = (a00 * a22 - a02 * a20);
    out[5] = (a02 * a10 - a00 * a12);
    out[6] = (a10 * a21 - a11 * a20);
    out[7] = (a01 * a20 - a00 * a21);
    out[8] = (a00 * a11 - a01 * a10);
    return out;
};

/**
 * Calculates the determinant of a mat3
 *
 * @param {mat3} a the source matrix
 * @returns {Number} determinant of a
 */
mat3.determinant = function (a) {
    var a00 = a[0], a01 = a[1], a02 = a[2],
        a10 = a[3], a11 = a[4], a12 = a[5],
        a20 = a[6], a21 = a[7], a22 = a[8];

    return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);
};

/**
 * Multiplies two mat3's
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the first operand
 * @param {mat3} b the second operand
 * @returns {mat3} out
 */
mat3.multiply = function (out, a, b) {
    var a00 = a[0], a01 = a[1], a02 = a[2],
        a10 = a[3], a11 = a[4], a12 = a[5],
        a20 = a[6], a21 = a[7], a22 = a[8],

        b00 = b[0], b01 = b[1], b02 = b[2],
        b10 = b[3], b11 = b[4], b12 = b[5],
        b20 = b[6], b21 = b[7], b22 = b[8];

    out[0] = b00 * a00 + b01 * a10 + b02 * a20;
    out[1] = b00 * a01 + b01 * a11 + b02 * a21;
    out[2] = b00 * a02 + b01 * a12 + b02 * a22;

    out[3] = b10 * a00 + b11 * a10 + b12 * a20;
    out[4] = b10 * a01 + b11 * a11 + b12 * a21;
    out[5] = b10 * a02 + b11 * a12 + b12 * a22;

    out[6] = b20 * a00 + b21 * a10 + b22 * a20;
    out[7] = b20 * a01 + b21 * a11 + b22 * a21;
    out[8] = b20 * a02 + b21 * a12 + b22 * a22;
    return out;
};

/**
 * Alias for {@link mat3.multiply}
 * @function
 */
mat3.mul = mat3.multiply;

/**
 * Translate a mat3 by the given vector
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the matrix to translate
 * @param {vec2} v vector to translate by
 * @returns {mat3} out
 */
mat3.translate = function(out, a, v) {
    var a00 = a[0], a01 = a[1], a02 = a[2],
        a10 = a[3], a11 = a[4], a12 = a[5],
        a20 = a[6], a21 = a[7], a22 = a[8],
        x = v[0], y = v[1];

    out[0] = a00;
    out[1] = a01;
    out[2] = a02;

    out[3] = a10;
    out[4] = a11;
    out[5] = a12;

    out[6] = x * a00 + y * a10 + a20;
    out[7] = x * a01 + y * a11 + a21;
    out[8] = x * a02 + y * a12 + a22;
    return out;
};

/**
 * Rotates a mat3 by the given angle
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat3} out
 */
mat3.rotate = function (out, a, rad) {
    var a00 = a[0], a01 = a[1], a02 = a[2],
        a10 = a[3], a11 = a[4], a12 = a[5],
        a20 = a[6], a21 = a[7], a22 = a[8],

        s = Math.sin(rad),
        c = Math.cos(rad);

    out[0] = c * a00 + s * a10;
    out[1] = c * a01 + s * a11;
    out[2] = c * a02 + s * a12;

    out[3] = c * a10 - s * a00;
    out[4] = c * a11 - s * a01;
    out[5] = c * a12 - s * a02;

    out[6] = a20;
    out[7] = a21;
    out[8] = a22;
    return out;
};

/**
 * Scales the mat3 by the dimensions in the given vec2
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the matrix to rotate
 * @param {vec2} v the vec2 to scale the matrix by
 * @returns {mat3} out
 **/
mat3.scale = function(out, a, v) {
    var x = v[0], y = v[1];

    out[0] = x * a[0];
    out[1] = x * a[1];
    out[2] = x * a[2];

    out[3] = y * a[3];
    out[4] = y * a[4];
    out[5] = y * a[5];

    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    return out;
};

/**
 * Creates a matrix from a vector translation
 * This is equivalent to (but much faster than):
 *
 *     mat3.identity(dest);
 *     mat3.translate(dest, dest, vec);
 *
 * @param {mat3} out mat3 receiving operation result
 * @param {vec2} v Translation vector
 * @returns {mat3} out
 */
mat3.fromTranslation = function(out, v) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 1;
    out[5] = 0;
    out[6] = v[0];
    out[7] = v[1];
    out[8] = 1;
    return out;
}

/**
 * Creates a matrix from a given angle
 * This is equivalent to (but much faster than):
 *
 *     mat3.identity(dest);
 *     mat3.rotate(dest, dest, rad);
 *
 * @param {mat3} out mat3 receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat3} out
 */
mat3.fromRotation = function(out, rad) {
    var s = Math.sin(rad), c = Math.cos(rad);

    out[0] = c;
    out[1] = s;
    out[2] = 0;

    out[3] = -s;
    out[4] = c;
    out[5] = 0;

    out[6] = 0;
    out[7] = 0;
    out[8] = 1;
    return out;
}

/**
 * Creates a matrix from a vector scaling
 * This is equivalent to (but much faster than):
 *
 *     mat3.identity(dest);
 *     mat3.scale(dest, dest, vec);
 *
 * @param {mat3} out mat3 receiving operation result
 * @param {vec2} v Scaling vector
 * @returns {mat3} out
 */
mat3.fromScaling = function(out, v) {
    out[0] = v[0];
    out[1] = 0;
    out[2] = 0;

    out[3] = 0;
    out[4] = v[1];
    out[5] = 0;

    out[6] = 0;
    out[7] = 0;
    out[8] = 1;
    return out;
}

/**
 * Copies the values from a mat2d into a mat3
 *
 * @param {mat3} out the receiving matrix
 * @param {mat2d} a the matrix to copy
 * @returns {mat3} out
 **/
mat3.fromMat2d = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = 0;

    out[3] = a[2];
    out[4] = a[3];
    out[5] = 0;

    out[6] = a[4];
    out[7] = a[5];
    out[8] = 1;
    return out;
};

/**
* Calculates a 3x3 matrix from the given quaternion
*
* @param {mat3} out mat3 receiving operation result
* @param {quat} q Quaternion to create matrix from
*
* @returns {mat3} out
*/
mat3.fromQuat = function (out, q) {
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        yx = y * x2,
        yy = y * y2,
        zx = z * x2,
        zy = z * y2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - yy - zz;
    out[3] = yx - wz;
    out[6] = zx + wy;

    out[1] = yx + wz;
    out[4] = 1 - xx - zz;
    out[7] = zy - wx;

    out[2] = zx - wy;
    out[5] = zy + wx;
    out[8] = 1 - xx - yy;

    return out;
};

/**
* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
*
* @param {mat3} out mat3 receiving operation result
* @param {mat4} a Mat4 to derive the normal matrix from
*
* @returns {mat3} out
*/
mat3.normalFromMat4 = function (out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],

        b00 = a00 * a11 - a01 * a10,
        b01 = a00 * a12 - a02 * a10,
        b02 = a00 * a13 - a03 * a10,
        b03 = a01 * a12 - a02 * a11,
        b04 = a01 * a13 - a03 * a11,
        b05 = a02 * a13 - a03 * a12,
        b06 = a20 * a31 - a21 * a30,
        b07 = a20 * a32 - a22 * a30,
        b08 = a20 * a33 - a23 * a30,
        b09 = a21 * a32 - a22 * a31,
        b10 = a21 * a33 - a23 * a31,
        b11 = a22 * a33 - a23 * a32,

        // Calculate the determinant
        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;

    if (!det) { 
        return null; 
    }
    det = 1.0 / det;

    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
    out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
    out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;

    out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
    out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
    out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;

    out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
    out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
    out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;

    return out;
};

/**
 * Returns a string representation of a mat3
 *
 * @param {mat3} mat matrix to represent as a string
 * @returns {String} string representation of the matrix
 */
mat3.str = function (a) {
    return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + 
                    a[3] + ', ' + a[4] + ', ' + a[5] + ', ' + 
                    a[6] + ', ' + a[7] + ', ' + a[8] + ')';
};

/**
 * Returns Frobenius norm of a mat3
 *
 * @param {mat3} a the matrix to calculate Frobenius norm of
 * @returns {Number} Frobenius norm
 */
mat3.frob = function (a) {
    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
};

/**
 * Adds two mat3's
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the first operand
 * @param {mat3} b the second operand
 * @returns {mat3} out
 */
mat3.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    out[2] = a[2] + b[2];
    out[3] = a[3] + b[3];
    out[4] = a[4] + b[4];
    out[5] = a[5] + b[5];
    out[6] = a[6] + b[6];
    out[7] = a[7] + b[7];
    out[8] = a[8] + b[8];
    return out;
};

/**
 * Subtracts matrix b from matrix a
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the first operand
 * @param {mat3} b the second operand
 * @returns {mat3} out
 */
mat3.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    out[2] = a[2] - b[2];
    out[3] = a[3] - b[3];
    out[4] = a[4] - b[4];
    out[5] = a[5] - b[5];
    out[6] = a[6] - b[6];
    out[7] = a[7] - b[7];
    out[8] = a[8] - b[8];
    return out;
};

/**
 * Alias for {@link mat3.subtract}
 * @function
 */
mat3.sub = mat3.subtract;

/**
 * Multiply each element of the matrix by a scalar.
 *
 * @param {mat3} out the receiving matrix
 * @param {mat3} a the matrix to scale
 * @param {Number} b amount to scale the matrix's elements by
 * @returns {mat3} out
 */
mat3.multiplyScalar = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    out[2] = a[2] * b;
    out[3] = a[3] * b;
    out[4] = a[4] * b;
    out[5] = a[5] * b;
    out[6] = a[6] * b;
    out[7] = a[7] * b;
    out[8] = a[8] * b;
    return out;
};

/**
 * Adds two mat3's after multiplying each element of the second operand by a scalar value.
 *
 * @param {mat3} out the receiving vector
 * @param {mat3} a the first operand
 * @param {mat3} b the second operand
 * @param {Number} scale the amount to scale b's elements by before adding
 * @returns {mat3} out
 */
mat3.multiplyScalarAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    out[2] = a[2] + (b[2] * scale);
    out[3] = a[3] + (b[3] * scale);
    out[4] = a[4] + (b[4] * scale);
    out[5] = a[5] + (b[5] * scale);
    out[6] = a[6] + (b[6] * scale);
    out[7] = a[7] + (b[7] * scale);
    out[8] = a[8] + (b[8] * scale);
    return out;
};

/*
 * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
 *
 * @param {mat3} a The first matrix.
 * @param {mat3} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat3.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && 
           a[3] === b[3] && a[4] === b[4] && a[5] === b[5] &&
           a[6] === b[6] && a[7] === b[7] && a[8] === b[8];
};

/**
 * Returns whether or not the matrices have approximately the same elements in the same position.
 *
 * @param {mat3} a The first matrix.
 * @param {mat3} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat3.equals = function (a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5], a6 = a[6], a7 = a[7], a8 = a[8];
    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5], b6 = a[6], b7 = b[7], b8 = b[8];
    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)));
};


module.exports = mat3;

},{"./common.js":169}],173:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 4x4 Matrix
 * @name mat4
 */
var mat4 = {
  scalar: {},
  SIMD: {},
};

/**
 * Creates a new identity mat4
 *
 * @returns {mat4} a new 4x4 matrix
 */
mat4.create = function() {
    var out = new glMatrix.ARRAY_TYPE(16);
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = 1;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 1;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
};

/**
 * Creates a new mat4 initialized with values from an existing matrix
 *
 * @param {mat4} a matrix to clone
 * @returns {mat4} a new 4x4 matrix
 */
mat4.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(16);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    out[9] = a[9];
    out[10] = a[10];
    out[11] = a[11];
    out[12] = a[12];
    out[13] = a[13];
    out[14] = a[14];
    out[15] = a[15];
    return out;
};

/**
 * Copy the values from one mat4 to another
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    out[4] = a[4];
    out[5] = a[5];
    out[6] = a[6];
    out[7] = a[7];
    out[8] = a[8];
    out[9] = a[9];
    out[10] = a[10];
    out[11] = a[11];
    out[12] = a[12];
    out[13] = a[13];
    out[14] = a[14];
    out[15] = a[15];
    return out;
};

/**
 * Create a new mat4 with the given values
 *
 * @param {Number} m00 Component in column 0, row 0 position (index 0)
 * @param {Number} m01 Component in column 0, row 1 position (index 1)
 * @param {Number} m02 Component in column 0, row 2 position (index 2)
 * @param {Number} m03 Component in column 0, row 3 position (index 3)
 * @param {Number} m10 Component in column 1, row 0 position (index 4)
 * @param {Number} m11 Component in column 1, row 1 position (index 5)
 * @param {Number} m12 Component in column 1, row 2 position (index 6)
 * @param {Number} m13 Component in column 1, row 3 position (index 7)
 * @param {Number} m20 Component in column 2, row 0 position (index 8)
 * @param {Number} m21 Component in column 2, row 1 position (index 9)
 * @param {Number} m22 Component in column 2, row 2 position (index 10)
 * @param {Number} m23 Component in column 2, row 3 position (index 11)
 * @param {Number} m30 Component in column 3, row 0 position (index 12)
 * @param {Number} m31 Component in column 3, row 1 position (index 13)
 * @param {Number} m32 Component in column 3, row 2 position (index 14)
 * @param {Number} m33 Component in column 3, row 3 position (index 15)
 * @returns {mat4} A new mat4
 */
mat4.fromValues = function(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
    var out = new glMatrix.ARRAY_TYPE(16);
    out[0] = m00;
    out[1] = m01;
    out[2] = m02;
    out[3] = m03;
    out[4] = m10;
    out[5] = m11;
    out[6] = m12;
    out[7] = m13;
    out[8] = m20;
    out[9] = m21;
    out[10] = m22;
    out[11] = m23;
    out[12] = m30;
    out[13] = m31;
    out[14] = m32;
    out[15] = m33;
    return out;
};

/**
 * Set the components of a mat4 to the given values
 *
 * @param {mat4} out the receiving matrix
 * @param {Number} m00 Component in column 0, row 0 position (index 0)
 * @param {Number} m01 Component in column 0, row 1 position (index 1)
 * @param {Number} m02 Component in column 0, row 2 position (index 2)
 * @param {Number} m03 Component in column 0, row 3 position (index 3)
 * @param {Number} m10 Component in column 1, row 0 position (index 4)
 * @param {Number} m11 Component in column 1, row 1 position (index 5)
 * @param {Number} m12 Component in column 1, row 2 position (index 6)
 * @param {Number} m13 Component in column 1, row 3 position (index 7)
 * @param {Number} m20 Component in column 2, row 0 position (index 8)
 * @param {Number} m21 Component in column 2, row 1 position (index 9)
 * @param {Number} m22 Component in column 2, row 2 position (index 10)
 * @param {Number} m23 Component in column 2, row 3 position (index 11)
 * @param {Number} m30 Component in column 3, row 0 position (index 12)
 * @param {Number} m31 Component in column 3, row 1 position (index 13)
 * @param {Number} m32 Component in column 3, row 2 position (index 14)
 * @param {Number} m33 Component in column 3, row 3 position (index 15)
 * @returns {mat4} out
 */
mat4.set = function(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {
    out[0] = m00;
    out[1] = m01;
    out[2] = m02;
    out[3] = m03;
    out[4] = m10;
    out[5] = m11;
    out[6] = m12;
    out[7] = m13;
    out[8] = m20;
    out[9] = m21;
    out[10] = m22;
    out[11] = m23;
    out[12] = m30;
    out[13] = m31;
    out[14] = m32;
    out[15] = m33;
    return out;
};


/**
 * Set a mat4 to the identity matrix
 *
 * @param {mat4} out the receiving matrix
 * @returns {mat4} out
 */
mat4.identity = function(out) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = 1;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 1;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
};

/**
 * Transpose the values of a mat4 not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.scalar.transpose = function(out, a) {
    // If we are transposing ourselves we can skip a few steps but have to cache some values
    if (out === a) {
        var a01 = a[1], a02 = a[2], a03 = a[3],
            a12 = a[6], a13 = a[7],
            a23 = a[11];

        out[1] = a[4];
        out[2] = a[8];
        out[3] = a[12];
        out[4] = a01;
        out[6] = a[9];
        out[7] = a[13];
        out[8] = a02;
        out[9] = a12;
        out[11] = a[14];
        out[12] = a03;
        out[13] = a13;
        out[14] = a23;
    } else {
        out[0] = a[0];
        out[1] = a[4];
        out[2] = a[8];
        out[3] = a[12];
        out[4] = a[1];
        out[5] = a[5];
        out[6] = a[9];
        out[7] = a[13];
        out[8] = a[2];
        out[9] = a[6];
        out[10] = a[10];
        out[11] = a[14];
        out[12] = a[3];
        out[13] = a[7];
        out[14] = a[11];
        out[15] = a[15];
    }

    return out;
};

/**
 * Transpose the values of a mat4 using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.SIMD.transpose = function(out, a) {
    var a0, a1, a2, a3,
        tmp01, tmp23,
        out0, out1, out2, out3;

    a0 = SIMD.Float32x4.load(a, 0);
    a1 = SIMD.Float32x4.load(a, 4);
    a2 = SIMD.Float32x4.load(a, 8);
    a3 = SIMD.Float32x4.load(a, 12);

    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
    out0  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
    out1  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
    SIMD.Float32x4.store(out, 0,  out0);
    SIMD.Float32x4.store(out, 4,  out1);

    tmp01 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
    tmp23 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
    out2  = SIMD.Float32x4.shuffle(tmp01, tmp23, 0, 2, 4, 6);
    out3  = SIMD.Float32x4.shuffle(tmp01, tmp23, 1, 3, 5, 7);
    SIMD.Float32x4.store(out, 8,  out2);
    SIMD.Float32x4.store(out, 12, out3);

    return out;
};

/**
 * Transpse a mat4 using SIMD if available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.transpose = glMatrix.USE_SIMD ? mat4.SIMD.transpose : mat4.scalar.transpose;

/**
 * Inverts a mat4 not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.scalar.invert = function(out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],

        b00 = a00 * a11 - a01 * a10,
        b01 = a00 * a12 - a02 * a10,
        b02 = a00 * a13 - a03 * a10,
        b03 = a01 * a12 - a02 * a11,
        b04 = a01 * a13 - a03 * a11,
        b05 = a02 * a13 - a03 * a12,
        b06 = a20 * a31 - a21 * a30,
        b07 = a20 * a32 - a22 * a30,
        b08 = a20 * a33 - a23 * a30,
        b09 = a21 * a32 - a22 * a31,
        b10 = a21 * a33 - a23 * a31,
        b11 = a22 * a33 - a23 * a32,

        // Calculate the determinant
        det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;

    if (!det) {
        return null;
    }
    det = 1.0 / det;

    out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
    out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
    out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
    out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
    out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
    out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
    out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
    out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
    out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
    out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
    out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
    out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
    out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
    out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
    out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
    out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;

    return out;
};

/**
 * Inverts a mat4 using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.SIMD.invert = function(out, a) {
  var row0, row1, row2, row3,
      tmp1,
      minor0, minor1, minor2, minor3,
      det,
      a0 = SIMD.Float32x4.load(a, 0),
      a1 = SIMD.Float32x4.load(a, 4),
      a2 = SIMD.Float32x4.load(a, 8),
      a3 = SIMD.Float32x4.load(a, 12);

  // Compute matrix adjugate
  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);
  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);

  tmp1   = SIMD.Float32x4.mul(row2, row3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor0 = SIMD.Float32x4.mul(row1, tmp1);
  minor1 = SIMD.Float32x4.mul(row0, tmp1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);

  tmp1   = SIMD.Float32x4.mul(row1, row2);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
  minor3 = SIMD.Float32x4.mul(row0, tmp1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);

  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
  minor2 = SIMD.Float32x4.mul(row0, tmp1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);

  tmp1   = SIMD.Float32x4.mul(row0, row1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));

  tmp1   = SIMD.Float32x4.mul(row0, row3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));

  tmp1   = SIMD.Float32x4.mul(row0, row2);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);

  // Compute matrix determinant
  det   = SIMD.Float32x4.mul(row0, minor0);
  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 2, 3, 0, 1), det);
  det   = SIMD.Float32x4.add(SIMD.Float32x4.swizzle(det, 1, 0, 3, 2), det);
  tmp1  = SIMD.Float32x4.reciprocalApproximation(det);
  det   = SIMD.Float32x4.sub(
               SIMD.Float32x4.add(tmp1, tmp1),
               SIMD.Float32x4.mul(det, SIMD.Float32x4.mul(tmp1, tmp1)));
  det   = SIMD.Float32x4.swizzle(det, 0, 0, 0, 0);
  if (!det) {
      return null;
  }

  // Compute matrix inverse
  SIMD.Float32x4.store(out, 0,  SIMD.Float32x4.mul(det, minor0));
  SIMD.Float32x4.store(out, 4,  SIMD.Float32x4.mul(det, minor1));
  SIMD.Float32x4.store(out, 8,  SIMD.Float32x4.mul(det, minor2));
  SIMD.Float32x4.store(out, 12, SIMD.Float32x4.mul(det, minor3));
  return out;
}

/**
 * Inverts a mat4 using SIMD if available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.invert = glMatrix.USE_SIMD ? mat4.SIMD.invert : mat4.scalar.invert;

/**
 * Calculates the adjugate of a mat4 not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.scalar.adjoint = function(out, a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];

    out[0]  =  (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
    out[1]  = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
    out[2]  =  (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
    out[3]  = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
    out[4]  = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
    out[5]  =  (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
    out[6]  = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
    out[7]  =  (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
    out[8]  =  (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
    out[9]  = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
    out[10] =  (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
    out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
    out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
    out[13] =  (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
    out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
    out[15] =  (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
    return out;
};

/**
 * Calculates the adjugate of a mat4 using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
mat4.SIMD.adjoint = function(out, a) {
  var a0, a1, a2, a3;
  var row0, row1, row2, row3;
  var tmp1;
  var minor0, minor1, minor2, minor3;

  var a0 = SIMD.Float32x4.load(a, 0);
  var a1 = SIMD.Float32x4.load(a, 4);
  var a2 = SIMD.Float32x4.load(a, 8);
  var a3 = SIMD.Float32x4.load(a, 12);

  // Transpose the source matrix.  Sort of.  Not a true transpose operation
  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 0, 1, 4, 5);
  row1 = SIMD.Float32x4.shuffle(a2, a3, 0, 1, 4, 5);
  row0 = SIMD.Float32x4.shuffle(tmp1, row1, 0, 2, 4, 6);
  row1 = SIMD.Float32x4.shuffle(row1, tmp1, 1, 3, 5, 7);

  tmp1 = SIMD.Float32x4.shuffle(a0, a1, 2, 3, 6, 7);
  row3 = SIMD.Float32x4.shuffle(a2, a3, 2, 3, 6, 7);
  row2 = SIMD.Float32x4.shuffle(tmp1, row3, 0, 2, 4, 6);
  row3 = SIMD.Float32x4.shuffle(row3, tmp1, 1, 3, 5, 7);

  tmp1   = SIMD.Float32x4.mul(row2, row3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor0 = SIMD.Float32x4.mul(row1, tmp1);
  minor1 = SIMD.Float32x4.mul(row0, tmp1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row1, tmp1), minor0);
  minor1 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor1);
  minor1 = SIMD.Float32x4.swizzle(minor1, 2, 3, 0, 1);

  tmp1   = SIMD.Float32x4.mul(row1, row2);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor0);
  minor3 = SIMD.Float32x4.mul(row0, tmp1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row3, tmp1));
  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor3);
  minor3 = SIMD.Float32x4.swizzle(minor3, 2, 3, 0, 1);

  tmp1   = SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(row1, 2, 3, 0, 1), row3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  row2   = SIMD.Float32x4.swizzle(row2, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor0);
  minor2 = SIMD.Float32x4.mul(row0, tmp1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor0 = SIMD.Float32x4.sub(minor0, SIMD.Float32x4.mul(row2, tmp1));
  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row0, tmp1), minor2);
  minor2 = SIMD.Float32x4.swizzle(minor2, 2, 3, 0, 1);

  tmp1   = SIMD.Float32x4.mul(row0, row1);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor2);
  minor3 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row2, tmp1), minor3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor2 = SIMD.Float32x4.sub(SIMD.Float32x4.mul(row3, tmp1), minor2);
  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row2, tmp1));

  tmp1   = SIMD.Float32x4.mul(row0, row3);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row2, tmp1));
  minor2 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor2);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row2, tmp1), minor1);
  minor2 = SIMD.Float32x4.sub(minor2, SIMD.Float32x4.mul(row1, tmp1));

  tmp1   = SIMD.Float32x4.mul(row0, row2);
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 1, 0, 3, 2);
  minor1 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row3, tmp1), minor1);
  minor3 = SIMD.Float32x4.sub(minor3, SIMD.Float32x4.mul(row1, tmp1));
  tmp1   = SIMD.Float32x4.swizzle(tmp1, 2, 3, 0, 1);
  minor1 = SIMD.Float32x4.sub(minor1, SIMD.Float32x4.mul(row3, tmp1));
  minor3 = SIMD.Float32x4.add(SIMD.Float32x4.mul(row1, tmp1), minor3);

  SIMD.Float32x4.store(out, 0,  minor0);
  SIMD.Float32x4.store(out, 4,  minor1);
  SIMD.Float32x4.store(out, 8,  minor2);
  SIMD.Float32x4.store(out, 12, minor3);
  return out;
};

/**
 * Calculates the adjugate of a mat4 using SIMD if available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the source matrix
 * @returns {mat4} out
 */
 mat4.adjoint = glMatrix.USE_SIMD ? mat4.SIMD.adjoint : mat4.scalar.adjoint;

/**
 * Calculates the determinant of a mat4
 *
 * @param {mat4} a the source matrix
 * @returns {Number} determinant of a
 */
mat4.determinant = function (a) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],

        b00 = a00 * a11 - a01 * a10,
        b01 = a00 * a12 - a02 * a10,
        b02 = a00 * a13 - a03 * a10,
        b03 = a01 * a12 - a02 * a11,
        b04 = a01 * a13 - a03 * a11,
        b05 = a02 * a13 - a03 * a12,
        b06 = a20 * a31 - a21 * a30,
        b07 = a20 * a32 - a22 * a30,
        b08 = a20 * a33 - a23 * a30,
        b09 = a21 * a32 - a22 * a31,
        b10 = a21 * a33 - a23 * a31,
        b11 = a22 * a33 - a23 * a32;

    // Calculate the determinant
    return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
};

/**
 * Multiplies two mat4's explicitly using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the first operand, must be a Float32Array
 * @param {mat4} b the second operand, must be a Float32Array
 * @returns {mat4} out
 */
mat4.SIMD.multiply = function (out, a, b) {
    var a0 = SIMD.Float32x4.load(a, 0);
    var a1 = SIMD.Float32x4.load(a, 4);
    var a2 = SIMD.Float32x4.load(a, 8);
    var a3 = SIMD.Float32x4.load(a, 12);

    var b0 = SIMD.Float32x4.load(b, 0);
    var out0 = SIMD.Float32x4.add(
                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 0, 0, 0, 0), a0),
                   SIMD.Float32x4.add(
                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 1, 1, 1, 1), a1),
                       SIMD.Float32x4.add(
                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 2, 2, 2, 2), a2),
                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b0, 3, 3, 3, 3), a3))));
    SIMD.Float32x4.store(out, 0, out0);

    var b1 = SIMD.Float32x4.load(b, 4);
    var out1 = SIMD.Float32x4.add(
                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 0, 0, 0, 0), a0),
                   SIMD.Float32x4.add(
                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 1, 1, 1, 1), a1),
                       SIMD.Float32x4.add(
                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 2, 2, 2, 2), a2),
                           SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b1, 3, 3, 3, 3), a3))));
    SIMD.Float32x4.store(out, 4, out1);

    var b2 = SIMD.Float32x4.load(b, 8);
    var out2 = SIMD.Float32x4.add(
                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 0, 0, 0, 0), a0),
                   SIMD.Float32x4.add(
                       SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 1, 1, 1, 1), a1),
                       SIMD.Float32x4.add(
                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 2, 2, 2, 2), a2),
                               SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b2, 3, 3, 3, 3), a3))));
    SIMD.Float32x4.store(out, 8, out2);

    var b3 = SIMD.Float32x4.load(b, 12);
    var out3 = SIMD.Float32x4.add(
                   SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 0, 0, 0, 0), a0),
                   SIMD.Float32x4.add(
                        SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 1, 1, 1, 1), a1),
                        SIMD.Float32x4.add(
                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 2, 2, 2, 2), a2),
                            SIMD.Float32x4.mul(SIMD.Float32x4.swizzle(b3, 3, 3, 3, 3), a3))));
    SIMD.Float32x4.store(out, 12, out3);

    return out;
};

/**
 * Multiplies two mat4's explicitly not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the first operand
 * @param {mat4} b the second operand
 * @returns {mat4} out
 */
mat4.scalar.multiply = function (out, a, b) {
    var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
        a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
        a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
        a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];

    // Cache only the current line of the second matrix
    var b0  = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
    out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
    out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
    out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;

    b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
    out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
    out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
    out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
    out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
    return out;
};

/**
 * Multiplies two mat4's using SIMD if available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the first operand
 * @param {mat4} b the second operand
 * @returns {mat4} out
 */
mat4.multiply = glMatrix.USE_SIMD ? mat4.SIMD.multiply : mat4.scalar.multiply;

/**
 * Alias for {@link mat4.multiply}
 * @function
 */
mat4.mul = mat4.multiply;

/**
 * Translate a mat4 by the given vector not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to translate
 * @param {vec3} v vector to translate by
 * @returns {mat4} out
 */
mat4.scalar.translate = function (out, a, v) {
    var x = v[0], y = v[1], z = v[2],
        a00, a01, a02, a03,
        a10, a11, a12, a13,
        a20, a21, a22, a23;

    if (a === out) {
        out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
        out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
        out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
        out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
    } else {
        a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
        a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
        a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];

        out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
        out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
        out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;

        out[12] = a00 * x + a10 * y + a20 * z + a[12];
        out[13] = a01 * x + a11 * y + a21 * z + a[13];
        out[14] = a02 * x + a12 * y + a22 * z + a[14];
        out[15] = a03 * x + a13 * y + a23 * z + a[15];
    }

    return out;
};

/**
 * Translates a mat4 by the given vector using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to translate
 * @param {vec3} v vector to translate by
 * @returns {mat4} out
 */
mat4.SIMD.translate = function (out, a, v) {
    var a0 = SIMD.Float32x4.load(a, 0),
        a1 = SIMD.Float32x4.load(a, 4),
        a2 = SIMD.Float32x4.load(a, 8),
        a3 = SIMD.Float32x4.load(a, 12),
        vec = SIMD.Float32x4(v[0], v[1], v[2] , 0);

    if (a !== out) {
        out[0] = a[0]; out[1] = a[1]; out[2] = a[2]; out[3] = a[3];
        out[4] = a[4]; out[5] = a[5]; out[6] = a[6]; out[7] = a[7];
        out[8] = a[8]; out[9] = a[9]; out[10] = a[10]; out[11] = a[11];
    }

    a0 = SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0));
    a1 = SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1));
    a2 = SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2));

    var t0 = SIMD.Float32x4.add(a0, SIMD.Float32x4.add(a1, SIMD.Float32x4.add(a2, a3)));
    SIMD.Float32x4.store(out, 12, t0);

    return out;
};

/**
 * Translates a mat4 by the given vector using SIMD if available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to translate
 * @param {vec3} v vector to translate by
 * @returns {mat4} out
 */
mat4.translate = glMatrix.USE_SIMD ? mat4.SIMD.translate : mat4.scalar.translate;

/**
 * Scales the mat4 by the dimensions in the given vec3 not using vectorization
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to scale
 * @param {vec3} v the vec3 to scale the matrix by
 * @returns {mat4} out
 **/
mat4.scalar.scale = function(out, a, v) {
    var x = v[0], y = v[1], z = v[2];

    out[0] = a[0] * x;
    out[1] = a[1] * x;
    out[2] = a[2] * x;
    out[3] = a[3] * x;
    out[4] = a[4] * y;
    out[5] = a[5] * y;
    out[6] = a[6] * y;
    out[7] = a[7] * y;
    out[8] = a[8] * z;
    out[9] = a[9] * z;
    out[10] = a[10] * z;
    out[11] = a[11] * z;
    out[12] = a[12];
    out[13] = a[13];
    out[14] = a[14];
    out[15] = a[15];
    return out;
};

/**
 * Scales the mat4 by the dimensions in the given vec3 using vectorization
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to scale
 * @param {vec3} v the vec3 to scale the matrix by
 * @returns {mat4} out
 **/
mat4.SIMD.scale = function(out, a, v) {
    var a0, a1, a2;
    var vec = SIMD.Float32x4(v[0], v[1], v[2], 0);

    a0 = SIMD.Float32x4.load(a, 0);
    SIMD.Float32x4.store(
        out, 0, SIMD.Float32x4.mul(a0, SIMD.Float32x4.swizzle(vec, 0, 0, 0, 0)));

    a1 = SIMD.Float32x4.load(a, 4);
    SIMD.Float32x4.store(
        out, 4, SIMD.Float32x4.mul(a1, SIMD.Float32x4.swizzle(vec, 1, 1, 1, 1)));

    a2 = SIMD.Float32x4.load(a, 8);
    SIMD.Float32x4.store(
        out, 8, SIMD.Float32x4.mul(a2, SIMD.Float32x4.swizzle(vec, 2, 2, 2, 2)));

    out[12] = a[12];
    out[13] = a[13];
    out[14] = a[14];
    out[15] = a[15];
    return out;
};

/**
 * Scales the mat4 by the dimensions in the given vec3 using SIMD if available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to scale
 * @param {vec3} v the vec3 to scale the matrix by
 * @returns {mat4} out
 */
mat4.scale = glMatrix.USE_SIMD ? mat4.SIMD.scale : mat4.scalar.scale;

/**
 * Rotates a mat4 by the given angle around the given axis
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @param {vec3} axis the axis to rotate around
 * @returns {mat4} out
 */
mat4.rotate = function (out, a, rad, axis) {
    var x = axis[0], y = axis[1], z = axis[2],
        len = Math.sqrt(x * x + y * y + z * z),
        s, c, t,
        a00, a01, a02, a03,
        a10, a11, a12, a13,
        a20, a21, a22, a23,
        b00, b01, b02,
        b10, b11, b12,
        b20, b21, b22;

    if (Math.abs(len) < glMatrix.EPSILON) { return null; }

    len = 1 / len;
    x *= len;
    y *= len;
    z *= len;

    s = Math.sin(rad);
    c = Math.cos(rad);
    t = 1 - c;

    a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
    a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
    a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];

    // Construct the elements of the rotation matrix
    b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
    b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
    b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;

    // Perform rotation-specific matrix multiplication
    out[0] = a00 * b00 + a10 * b01 + a20 * b02;
    out[1] = a01 * b00 + a11 * b01 + a21 * b02;
    out[2] = a02 * b00 + a12 * b01 + a22 * b02;
    out[3] = a03 * b00 + a13 * b01 + a23 * b02;
    out[4] = a00 * b10 + a10 * b11 + a20 * b12;
    out[5] = a01 * b10 + a11 * b11 + a21 * b12;
    out[6] = a02 * b10 + a12 * b11 + a22 * b12;
    out[7] = a03 * b10 + a13 * b11 + a23 * b12;
    out[8] = a00 * b20 + a10 * b21 + a20 * b22;
    out[9] = a01 * b20 + a11 * b21 + a21 * b22;
    out[10] = a02 * b20 + a12 * b21 + a22 * b22;
    out[11] = a03 * b20 + a13 * b21 + a23 * b22;

    if (a !== out) { // If the source and destination differ, copy the unchanged last row
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }
    return out;
};

/**
 * Rotates a matrix by the given angle around the X axis not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.scalar.rotateX = function (out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a10 = a[4],
        a11 = a[5],
        a12 = a[6],
        a13 = a[7],
        a20 = a[8],
        a21 = a[9],
        a22 = a[10],
        a23 = a[11];

    if (a !== out) { // If the source and destination differ, copy the unchanged rows
        out[0]  = a[0];
        out[1]  = a[1];
        out[2]  = a[2];
        out[3]  = a[3];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    out[4] = a10 * c + a20 * s;
    out[5] = a11 * c + a21 * s;
    out[6] = a12 * c + a22 * s;
    out[7] = a13 * c + a23 * s;
    out[8] = a20 * c - a10 * s;
    out[9] = a21 * c - a11 * s;
    out[10] = a22 * c - a12 * s;
    out[11] = a23 * c - a13 * s;
    return out;
};

/**
 * Rotates a matrix by the given angle around the X axis using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.SIMD.rotateX = function (out, a, rad) {
    var s = SIMD.Float32x4.splat(Math.sin(rad)),
        c = SIMD.Float32x4.splat(Math.cos(rad));

    if (a !== out) { // If the source and destination differ, copy the unchanged rows
      out[0]  = a[0];
      out[1]  = a[1];
      out[2]  = a[2];
      out[3]  = a[3];
      out[12] = a[12];
      out[13] = a[13];
      out[14] = a[14];
      out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    var a_1 = SIMD.Float32x4.load(a, 4);
    var a_2 = SIMD.Float32x4.load(a, 8);
    SIMD.Float32x4.store(out, 4,
                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_2, s)));
    SIMD.Float32x4.store(out, 8,
                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_2, c), SIMD.Float32x4.mul(a_1, s)));
    return out;
};

/**
 * Rotates a matrix by the given angle around the X axis using SIMD if availabe and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.rotateX = glMatrix.USE_SIMD ? mat4.SIMD.rotateX : mat4.scalar.rotateX;

/**
 * Rotates a matrix by the given angle around the Y axis not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.scalar.rotateY = function (out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a00 = a[0],
        a01 = a[1],
        a02 = a[2],
        a03 = a[3],
        a20 = a[8],
        a21 = a[9],
        a22 = a[10],
        a23 = a[11];

    if (a !== out) { // If the source and destination differ, copy the unchanged rows
        out[4]  = a[4];
        out[5]  = a[5];
        out[6]  = a[6];
        out[7]  = a[7];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    out[0] = a00 * c - a20 * s;
    out[1] = a01 * c - a21 * s;
    out[2] = a02 * c - a22 * s;
    out[3] = a03 * c - a23 * s;
    out[8] = a00 * s + a20 * c;
    out[9] = a01 * s + a21 * c;
    out[10] = a02 * s + a22 * c;
    out[11] = a03 * s + a23 * c;
    return out;
};

/**
 * Rotates a matrix by the given angle around the Y axis using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.SIMD.rotateY = function (out, a, rad) {
    var s = SIMD.Float32x4.splat(Math.sin(rad)),
        c = SIMD.Float32x4.splat(Math.cos(rad));

    if (a !== out) { // If the source and destination differ, copy the unchanged rows
        out[4]  = a[4];
        out[5]  = a[5];
        out[6]  = a[6];
        out[7]  = a[7];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    var a_0 = SIMD.Float32x4.load(a, 0);
    var a_2 = SIMD.Float32x4.load(a, 8);
    SIMD.Float32x4.store(out, 0,
                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_2, s)));
    SIMD.Float32x4.store(out, 8,
                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, s), SIMD.Float32x4.mul(a_2, c)));
    return out;
};

/**
 * Rotates a matrix by the given angle around the Y axis if SIMD available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
 mat4.rotateY = glMatrix.USE_SIMD ? mat4.SIMD.rotateY : mat4.scalar.rotateY;

/**
 * Rotates a matrix by the given angle around the Z axis not using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.scalar.rotateZ = function (out, a, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad),
        a00 = a[0],
        a01 = a[1],
        a02 = a[2],
        a03 = a[3],
        a10 = a[4],
        a11 = a[5],
        a12 = a[6],
        a13 = a[7];

    if (a !== out) { // If the source and destination differ, copy the unchanged last row
        out[8]  = a[8];
        out[9]  = a[9];
        out[10] = a[10];
        out[11] = a[11];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    out[0] = a00 * c + a10 * s;
    out[1] = a01 * c + a11 * s;
    out[2] = a02 * c + a12 * s;
    out[3] = a03 * c + a13 * s;
    out[4] = a10 * c - a00 * s;
    out[5] = a11 * c - a01 * s;
    out[6] = a12 * c - a02 * s;
    out[7] = a13 * c - a03 * s;
    return out;
};

/**
 * Rotates a matrix by the given angle around the Z axis using SIMD
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.SIMD.rotateZ = function (out, a, rad) {
    var s = SIMD.Float32x4.splat(Math.sin(rad)),
        c = SIMD.Float32x4.splat(Math.cos(rad));

    if (a !== out) { // If the source and destination differ, copy the unchanged last row
        out[8]  = a[8];
        out[9]  = a[9];
        out[10] = a[10];
        out[11] = a[11];
        out[12] = a[12];
        out[13] = a[13];
        out[14] = a[14];
        out[15] = a[15];
    }

    // Perform axis-specific matrix multiplication
    var a_0 = SIMD.Float32x4.load(a, 0);
    var a_1 = SIMD.Float32x4.load(a, 4);
    SIMD.Float32x4.store(out, 0,
                         SIMD.Float32x4.add(SIMD.Float32x4.mul(a_0, c), SIMD.Float32x4.mul(a_1, s)));
    SIMD.Float32x4.store(out, 4,
                         SIMD.Float32x4.sub(SIMD.Float32x4.mul(a_1, c), SIMD.Float32x4.mul(a_0, s)));
    return out;
};

/**
 * Rotates a matrix by the given angle around the Z axis if SIMD available and enabled
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to rotate
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
 mat4.rotateZ = glMatrix.USE_SIMD ? mat4.SIMD.rotateZ : mat4.scalar.rotateZ;

/**
 * Creates a matrix from a vector translation
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.translate(dest, dest, vec);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {vec3} v Translation vector
 * @returns {mat4} out
 */
mat4.fromTranslation = function(out, v) {
    out[0] = 1;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = 1;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 1;
    out[11] = 0;
    out[12] = v[0];
    out[13] = v[1];
    out[14] = v[2];
    out[15] = 1;
    return out;
}

/**
 * Creates a matrix from a vector scaling
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.scale(dest, dest, vec);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {vec3} v Scaling vector
 * @returns {mat4} out
 */
mat4.fromScaling = function(out, v) {
    out[0] = v[0];
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = v[1];
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = v[2];
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
}

/**
 * Creates a matrix from a given angle around a given axis
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.rotate(dest, dest, rad, axis);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @param {vec3} axis the axis to rotate around
 * @returns {mat4} out
 */
mat4.fromRotation = function(out, rad, axis) {
    var x = axis[0], y = axis[1], z = axis[2],
        len = Math.sqrt(x * x + y * y + z * z),
        s, c, t;

    if (Math.abs(len) < glMatrix.EPSILON) { return null; }

    len = 1 / len;
    x *= len;
    y *= len;
    z *= len;

    s = Math.sin(rad);
    c = Math.cos(rad);
    t = 1 - c;

    // Perform rotation-specific matrix multiplication
    out[0] = x * x * t + c;
    out[1] = y * x * t + z * s;
    out[2] = z * x * t - y * s;
    out[3] = 0;
    out[4] = x * y * t - z * s;
    out[5] = y * y * t + c;
    out[6] = z * y * t + x * s;
    out[7] = 0;
    out[8] = x * z * t + y * s;
    out[9] = y * z * t - x * s;
    out[10] = z * z * t + c;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
}

/**
 * Creates a matrix from the given angle around the X axis
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.rotateX(dest, dest, rad);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.fromXRotation = function(out, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad);

    // Perform axis-specific matrix multiplication
    out[0]  = 1;
    out[1]  = 0;
    out[2]  = 0;
    out[3]  = 0;
    out[4] = 0;
    out[5] = c;
    out[6] = s;
    out[7] = 0;
    out[8] = 0;
    out[9] = -s;
    out[10] = c;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
}

/**
 * Creates a matrix from the given angle around the Y axis
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.rotateY(dest, dest, rad);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.fromYRotation = function(out, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad);

    // Perform axis-specific matrix multiplication
    out[0]  = c;
    out[1]  = 0;
    out[2]  = -s;
    out[3]  = 0;
    out[4] = 0;
    out[5] = 1;
    out[6] = 0;
    out[7] = 0;
    out[8] = s;
    out[9] = 0;
    out[10] = c;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
}

/**
 * Creates a matrix from the given angle around the Z axis
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.rotateZ(dest, dest, rad);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {Number} rad the angle to rotate the matrix by
 * @returns {mat4} out
 */
mat4.fromZRotation = function(out, rad) {
    var s = Math.sin(rad),
        c = Math.cos(rad);

    // Perform axis-specific matrix multiplication
    out[0]  = c;
    out[1]  = s;
    out[2]  = 0;
    out[3]  = 0;
    out[4] = -s;
    out[5] = c;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 1;
    out[11] = 0;
    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;
    return out;
}

/**
 * Creates a matrix from a quaternion rotation and vector translation
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.translate(dest, vec);
 *     var quatMat = mat4.create();
 *     quat4.toMat4(quat, quatMat);
 *     mat4.multiply(dest, quatMat);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat4} q Rotation quaternion
 * @param {vec3} v Translation vector
 * @returns {mat4} out
 */
mat4.fromRotationTranslation = function (out, q, v) {
    // Quaternion math
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        xy = x * y2,
        xz = x * z2,
        yy = y * y2,
        yz = y * z2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - (yy + zz);
    out[1] = xy + wz;
    out[2] = xz - wy;
    out[3] = 0;
    out[4] = xy - wz;
    out[5] = 1 - (xx + zz);
    out[6] = yz + wx;
    out[7] = 0;
    out[8] = xz + wy;
    out[9] = yz - wx;
    out[10] = 1 - (xx + yy);
    out[11] = 0;
    out[12] = v[0];
    out[13] = v[1];
    out[14] = v[2];
    out[15] = 1;

    return out;
};

/**
 * Returns the translation vector component of a transformation
 *  matrix. If a matrix is built with fromRotationTranslation,
 *  the returned vector will be the same as the translation vector
 *  originally supplied.
 * @param  {vec3} out Vector to receive translation component
 * @param  {mat4} mat Matrix to be decomposed (input)
 * @return {vec3} out
 */
mat4.getTranslation = function (out, mat) {
  out[0] = mat[12];
  out[1] = mat[13];
  out[2] = mat[14];

  return out;
};

/**
 * Returns a quaternion representing the rotational component
 *  of a transformation matrix. If a matrix is built with
 *  fromRotationTranslation, the returned quaternion will be the
 *  same as the quaternion originally supplied.
 * @param {quat} out Quaternion to receive the rotation component
 * @param {mat4} mat Matrix to be decomposed (input)
 * @return {quat} out
 */
mat4.getRotation = function (out, mat) {
  // Algorithm taken from http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
  var trace = mat[0] + mat[5] + mat[10];
  var S = 0;

  if (trace > 0) { 
    S = Math.sqrt(trace + 1.0) * 2;
    out[3] = 0.25 * S;
    out[0] = (mat[6] - mat[9]) / S;
    out[1] = (mat[8] - mat[2]) / S; 
    out[2] = (mat[1] - mat[4]) / S; 
  } else if ((mat[0] > mat[5])&(mat[0] > mat[10])) { 
    S = Math.sqrt(1.0 + mat[0] - mat[5] - mat[10]) * 2;
    out[3] = (mat[6] - mat[9]) / S;
    out[0] = 0.25 * S;
    out[1] = (mat[1] + mat[4]) / S; 
    out[2] = (mat[8] + mat[2]) / S; 
  } else if (mat[5] > mat[10]) { 
    S = Math.sqrt(1.0 + mat[5] - mat[0] - mat[10]) * 2;
    out[3] = (mat[8] - mat[2]) / S;
    out[0] = (mat[1] + mat[4]) / S; 
    out[1] = 0.25 * S;
    out[2] = (mat[6] + mat[9]) / S; 
  } else { 
    S = Math.sqrt(1.0 + mat[10] - mat[0] - mat[5]) * 2;
    out[3] = (mat[1] - mat[4]) / S;
    out[0] = (mat[8] + mat[2]) / S;
    out[1] = (mat[6] + mat[9]) / S;
    out[2] = 0.25 * S;
  }

  return out;
};

/**
 * Creates a matrix from a quaternion rotation, vector translation and vector scale
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.translate(dest, vec);
 *     var quatMat = mat4.create();
 *     quat4.toMat4(quat, quatMat);
 *     mat4.multiply(dest, quatMat);
 *     mat4.scale(dest, scale)
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat4} q Rotation quaternion
 * @param {vec3} v Translation vector
 * @param {vec3} s Scaling vector
 * @returns {mat4} out
 */
mat4.fromRotationTranslationScale = function (out, q, v, s) {
    // Quaternion math
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        xy = x * y2,
        xz = x * z2,
        yy = y * y2,
        yz = y * z2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2,
        sx = s[0],
        sy = s[1],
        sz = s[2];

    out[0] = (1 - (yy + zz)) * sx;
    out[1] = (xy + wz) * sx;
    out[2] = (xz - wy) * sx;
    out[3] = 0;
    out[4] = (xy - wz) * sy;
    out[5] = (1 - (xx + zz)) * sy;
    out[6] = (yz + wx) * sy;
    out[7] = 0;
    out[8] = (xz + wy) * sz;
    out[9] = (yz - wx) * sz;
    out[10] = (1 - (xx + yy)) * sz;
    out[11] = 0;
    out[12] = v[0];
    out[13] = v[1];
    out[14] = v[2];
    out[15] = 1;

    return out;
};

/**
 * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin
 * This is equivalent to (but much faster than):
 *
 *     mat4.identity(dest);
 *     mat4.translate(dest, vec);
 *     mat4.translate(dest, origin);
 *     var quatMat = mat4.create();
 *     quat4.toMat4(quat, quatMat);
 *     mat4.multiply(dest, quatMat);
 *     mat4.scale(dest, scale)
 *     mat4.translate(dest, negativeOrigin);
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat4} q Rotation quaternion
 * @param {vec3} v Translation vector
 * @param {vec3} s Scaling vector
 * @param {vec3} o The origin vector around which to scale and rotate
 * @returns {mat4} out
 */
mat4.fromRotationTranslationScaleOrigin = function (out, q, v, s, o) {
  // Quaternion math
  var x = q[0], y = q[1], z = q[2], w = q[3],
      x2 = x + x,
      y2 = y + y,
      z2 = z + z,

      xx = x * x2,
      xy = x * y2,
      xz = x * z2,
      yy = y * y2,
      yz = y * z2,
      zz = z * z2,
      wx = w * x2,
      wy = w * y2,
      wz = w * z2,

      sx = s[0],
      sy = s[1],
      sz = s[2],

      ox = o[0],
      oy = o[1],
      oz = o[2];

  out[0] = (1 - (yy + zz)) * sx;
  out[1] = (xy + wz) * sx;
  out[2] = (xz - wy) * sx;
  out[3] = 0;
  out[4] = (xy - wz) * sy;
  out[5] = (1 - (xx + zz)) * sy;
  out[6] = (yz + wx) * sy;
  out[7] = 0;
  out[8] = (xz + wy) * sz;
  out[9] = (yz - wx) * sz;
  out[10] = (1 - (xx + yy)) * sz;
  out[11] = 0;
  out[12] = v[0] + ox - (out[0] * ox + out[4] * oy + out[8] * oz);
  out[13] = v[1] + oy - (out[1] * ox + out[5] * oy + out[9] * oz);
  out[14] = v[2] + oz - (out[2] * ox + out[6] * oy + out[10] * oz);
  out[15] = 1;

  return out;
};

/**
 * Calculates a 4x4 matrix from the given quaternion
 *
 * @param {mat4} out mat4 receiving operation result
 * @param {quat} q Quaternion to create matrix from
 *
 * @returns {mat4} out
 */
mat4.fromQuat = function (out, q) {
    var x = q[0], y = q[1], z = q[2], w = q[3],
        x2 = x + x,
        y2 = y + y,
        z2 = z + z,

        xx = x * x2,
        yx = y * x2,
        yy = y * y2,
        zx = z * x2,
        zy = z * y2,
        zz = z * z2,
        wx = w * x2,
        wy = w * y2,
        wz = w * z2;

    out[0] = 1 - yy - zz;
    out[1] = yx + wz;
    out[2] = zx - wy;
    out[3] = 0;

    out[4] = yx - wz;
    out[5] = 1 - xx - zz;
    out[6] = zy + wx;
    out[7] = 0;

    out[8] = zx + wy;
    out[9] = zy - wx;
    out[10] = 1 - xx - yy;
    out[11] = 0;

    out[12] = 0;
    out[13] = 0;
    out[14] = 0;
    out[15] = 1;

    return out;
};

/**
 * Generates a frustum matrix with the given bounds
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {Number} left Left bound of the frustum
 * @param {Number} right Right bound of the frustum
 * @param {Number} bottom Bottom bound of the frustum
 * @param {Number} top Top bound of the frustum
 * @param {Number} near Near bound of the frustum
 * @param {Number} far Far bound of the frustum
 * @returns {mat4} out
 */
mat4.frustum = function (out, left, right, bottom, top, near, far) {
    var rl = 1 / (right - left),
        tb = 1 / (top - bottom),
        nf = 1 / (near - far);
    out[0] = (near * 2) * rl;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = (near * 2) * tb;
    out[6] = 0;
    out[7] = 0;
    out[8] = (right + left) * rl;
    out[9] = (top + bottom) * tb;
    out[10] = (far + near) * nf;
    out[11] = -1;
    out[12] = 0;
    out[13] = 0;
    out[14] = (far * near * 2) * nf;
    out[15] = 0;
    return out;
};

/**
 * Generates a perspective projection matrix with the given bounds
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {number} fovy Vertical field of view in radians
 * @param {number} aspect Aspect ratio. typically viewport width/height
 * @param {number} near Near bound of the frustum
 * @param {number} far Far bound of the frustum
 * @returns {mat4} out
 */
mat4.perspective = function (out, fovy, aspect, near, far) {
    var f = 1.0 / Math.tan(fovy / 2),
        nf = 1 / (near - far);
    out[0] = f / aspect;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = f;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = (far + near) * nf;
    out[11] = -1;
    out[12] = 0;
    out[13] = 0;
    out[14] = (2 * far * near) * nf;
    out[15] = 0;
    return out;
};

/**
 * Generates a perspective projection matrix with the given field of view.
 * This is primarily useful for generating projection matrices to be used
 * with the still experiemental WebVR API.
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees
 * @param {number} near Near bound of the frustum
 * @param {number} far Far bound of the frustum
 * @returns {mat4} out
 */
mat4.perspectiveFromFieldOfView = function (out, fov, near, far) {
    var upTan = Math.tan(fov.upDegrees * Math.PI/180.0),
        downTan = Math.tan(fov.downDegrees * Math.PI/180.0),
        leftTan = Math.tan(fov.leftDegrees * Math.PI/180.0),
        rightTan = Math.tan(fov.rightDegrees * Math.PI/180.0),
        xScale = 2.0 / (leftTan + rightTan),
        yScale = 2.0 / (upTan + downTan);

    out[0] = xScale;
    out[1] = 0.0;
    out[2] = 0.0;
    out[3] = 0.0;
    out[4] = 0.0;
    out[5] = yScale;
    out[6] = 0.0;
    out[7] = 0.0;
    out[8] = -((leftTan - rightTan) * xScale * 0.5);
    out[9] = ((upTan - downTan) * yScale * 0.5);
    out[10] = far / (near - far);
    out[11] = -1.0;
    out[12] = 0.0;
    out[13] = 0.0;
    out[14] = (far * near) / (near - far);
    out[15] = 0.0;
    return out;
}

/**
 * Generates a orthogonal projection matrix with the given bounds
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {number} left Left bound of the frustum
 * @param {number} right Right bound of the frustum
 * @param {number} bottom Bottom bound of the frustum
 * @param {number} top Top bound of the frustum
 * @param {number} near Near bound of the frustum
 * @param {number} far Far bound of the frustum
 * @returns {mat4} out
 */
mat4.ortho = function (out, left, right, bottom, top, near, far) {
    var lr = 1 / (left - right),
        bt = 1 / (bottom - top),
        nf = 1 / (near - far);
    out[0] = -2 * lr;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    out[4] = 0;
    out[5] = -2 * bt;
    out[6] = 0;
    out[7] = 0;
    out[8] = 0;
    out[9] = 0;
    out[10] = 2 * nf;
    out[11] = 0;
    out[12] = (left + right) * lr;
    out[13] = (top + bottom) * bt;
    out[14] = (far + near) * nf;
    out[15] = 1;
    return out;
};

/**
 * Generates a look-at matrix with the given eye position, focal point, and up axis
 *
 * @param {mat4} out mat4 frustum matrix will be written into
 * @param {vec3} eye Position of the viewer
 * @param {vec3} center Point the viewer is looking at
 * @param {vec3} up vec3 pointing up
 * @returns {mat4} out
 */
mat4.lookAt = function (out, eye, center, up) {
    var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
        eyex = eye[0],
        eyey = eye[1],
        eyez = eye[2],
        upx = up[0],
        upy = up[1],
        upz = up[2],
        centerx = center[0],
        centery = center[1],
        centerz = center[2];

    if (Math.abs(eyex - centerx) < glMatrix.EPSILON &&
        Math.abs(eyey - centery) < glMatrix.EPSILON &&
        Math.abs(eyez - centerz) < glMatrix.EPSILON) {
        return mat4.identity(out);
    }

    z0 = eyex - centerx;
    z1 = eyey - centery;
    z2 = eyez - centerz;

    len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
    z0 *= len;
    z1 *= len;
    z2 *= len;

    x0 = upy * z2 - upz * z1;
    x1 = upz * z0 - upx * z2;
    x2 = upx * z1 - upy * z0;
    len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
    if (!len) {
        x0 = 0;
        x1 = 0;
        x2 = 0;
    } else {
        len = 1 / len;
        x0 *= len;
        x1 *= len;
        x2 *= len;
    }

    y0 = z1 * x2 - z2 * x1;
    y1 = z2 * x0 - z0 * x2;
    y2 = z0 * x1 - z1 * x0;

    len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
    if (!len) {
        y0 = 0;
        y1 = 0;
        y2 = 0;
    } else {
        len = 1 / len;
        y0 *= len;
        y1 *= len;
        y2 *= len;
    }

    out[0] = x0;
    out[1] = y0;
    out[2] = z0;
    out[3] = 0;
    out[4] = x1;
    out[5] = y1;
    out[6] = z1;
    out[7] = 0;
    out[8] = x2;
    out[9] = y2;
    out[10] = z2;
    out[11] = 0;
    out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
    out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
    out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
    out[15] = 1;

    return out;
};

/**
 * Returns a string representation of a mat4
 *
 * @param {mat4} mat matrix to represent as a string
 * @returns {String} string representation of the matrix
 */
mat4.str = function (a) {
    return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
                    a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
                    a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
                    a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
};

/**
 * Returns Frobenius norm of a mat4
 *
 * @param {mat4} a the matrix to calculate Frobenius norm of
 * @returns {Number} Frobenius norm
 */
mat4.frob = function (a) {
    return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
};

/**
 * Adds two mat4's
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the first operand
 * @param {mat4} b the second operand
 * @returns {mat4} out
 */
mat4.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    out[2] = a[2] + b[2];
    out[3] = a[3] + b[3];
    out[4] = a[4] + b[4];
    out[5] = a[5] + b[5];
    out[6] = a[6] + b[6];
    out[7] = a[7] + b[7];
    out[8] = a[8] + b[8];
    out[9] = a[9] + b[9];
    out[10] = a[10] + b[10];
    out[11] = a[11] + b[11];
    out[12] = a[12] + b[12];
    out[13] = a[13] + b[13];
    out[14] = a[14] + b[14];
    out[15] = a[15] + b[15];
    return out;
};

/**
 * Subtracts matrix b from matrix a
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the first operand
 * @param {mat4} b the second operand
 * @returns {mat4} out
 */
mat4.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    out[2] = a[2] - b[2];
    out[3] = a[3] - b[3];
    out[4] = a[4] - b[4];
    out[5] = a[5] - b[5];
    out[6] = a[6] - b[6];
    out[7] = a[7] - b[7];
    out[8] = a[8] - b[8];
    out[9] = a[9] - b[9];
    out[10] = a[10] - b[10];
    out[11] = a[11] - b[11];
    out[12] = a[12] - b[12];
    out[13] = a[13] - b[13];
    out[14] = a[14] - b[14];
    out[15] = a[15] - b[15];
    return out;
};

/**
 * Alias for {@link mat4.subtract}
 * @function
 */
mat4.sub = mat4.subtract;

/**
 * Multiply each element of the matrix by a scalar.
 *
 * @param {mat4} out the receiving matrix
 * @param {mat4} a the matrix to scale
 * @param {Number} b amount to scale the matrix's elements by
 * @returns {mat4} out
 */
mat4.multiplyScalar = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    out[2] = a[2] * b;
    out[3] = a[3] * b;
    out[4] = a[4] * b;
    out[5] = a[5] * b;
    out[6] = a[6] * b;
    out[7] = a[7] * b;
    out[8] = a[8] * b;
    out[9] = a[9] * b;
    out[10] = a[10] * b;
    out[11] = a[11] * b;
    out[12] = a[12] * b;
    out[13] = a[13] * b;
    out[14] = a[14] * b;
    out[15] = a[15] * b;
    return out;
};

/**
 * Adds two mat4's after multiplying each element of the second operand by a scalar value.
 *
 * @param {mat4} out the receiving vector
 * @param {mat4} a the first operand
 * @param {mat4} b the second operand
 * @param {Number} scale the amount to scale b's elements by before adding
 * @returns {mat4} out
 */
mat4.multiplyScalarAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    out[2] = a[2] + (b[2] * scale);
    out[3] = a[3] + (b[3] * scale);
    out[4] = a[4] + (b[4] * scale);
    out[5] = a[5] + (b[5] * scale);
    out[6] = a[6] + (b[6] * scale);
    out[7] = a[7] + (b[7] * scale);
    out[8] = a[8] + (b[8] * scale);
    out[9] = a[9] + (b[9] * scale);
    out[10] = a[10] + (b[10] * scale);
    out[11] = a[11] + (b[11] * scale);
    out[12] = a[12] + (b[12] * scale);
    out[13] = a[13] + (b[13] * scale);
    out[14] = a[14] + (b[14] * scale);
    out[15] = a[15] + (b[15] * scale);
    return out;
};

/**
 * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)
 *
 * @param {mat4} a The first matrix.
 * @param {mat4} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat4.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && 
           a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && 
           a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] &&
           a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];
};

/**
 * Returns whether or not the matrices have approximately the same elements in the same position.
 *
 * @param {mat4} a The first matrix.
 * @param {mat4} b The second matrix.
 * @returns {Boolean} True if the matrices are equal, false otherwise.
 */
mat4.equals = function (a, b) {
    var a0  = a[0],  a1  = a[1],  a2  = a[2],  a3  = a[3],
        a4  = a[4],  a5  = a[5],  a6  = a[6],  a7  = a[7], 
        a8  = a[8],  a9  = a[9],  a10 = a[10], a11 = a[11], 
        a12 = a[12], a13 = a[13], a14 = a[14], a15 = a[15];

    var b0  = b[0],  b1  = b[1],  b2  = b[2],  b3  = b[3],
        b4  = b[4],  b5  = b[5],  b6  = b[6],  b7  = b[7], 
        b8  = b[8],  b9  = b[9],  b10 = b[10], b11 = b[11], 
        b12 = b[12], b13 = b[13], b14 = b[14], b15 = b[15];

    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)) &&
            Math.abs(a4 - b4) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a4), Math.abs(b4)) &&
            Math.abs(a5 - b5) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a5), Math.abs(b5)) &&
            Math.abs(a6 - b6) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a6), Math.abs(b6)) &&
            Math.abs(a7 - b7) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a7), Math.abs(b7)) &&
            Math.abs(a8 - b8) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a8), Math.abs(b8)) &&
            Math.abs(a9 - b9) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a9), Math.abs(b9)) &&
            Math.abs(a10 - b10) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a10), Math.abs(b10)) &&
            Math.abs(a11 - b11) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a11), Math.abs(b11)) &&
            Math.abs(a12 - b12) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a12), Math.abs(b12)) &&
            Math.abs(a13 - b13) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a13), Math.abs(b13)) &&
            Math.abs(a14 - b14) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a14), Math.abs(b14)) &&
            Math.abs(a15 - b15) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a15), Math.abs(b15)));
};



module.exports = mat4;

},{"./common.js":169}],174:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");
var mat3 = require("./mat3.js");
var vec3 = require("./vec3.js");
var vec4 = require("./vec4.js");

/**
 * @class Quaternion
 * @name quat
 */
var quat = {};

/**
 * Creates a new identity quat
 *
 * @returns {quat} a new quaternion
 */
quat.create = function() {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = 0;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    return out;
};

/**
 * Sets a quaternion to represent the shortest rotation from one
 * vector to another.
 *
 * Both vectors are assumed to be unit length.
 *
 * @param {quat} out the receiving quaternion.
 * @param {vec3} a the initial vector
 * @param {vec3} b the destination vector
 * @returns {quat} out
 */
quat.rotationTo = (function() {
    var tmpvec3 = vec3.create();
    var xUnitVec3 = vec3.fromValues(1,0,0);
    var yUnitVec3 = vec3.fromValues(0,1,0);

    return function(out, a, b) {
        var dot = vec3.dot(a, b);
        if (dot < -0.999999) {
            vec3.cross(tmpvec3, xUnitVec3, a);
            if (vec3.length(tmpvec3) < 0.000001)
                vec3.cross(tmpvec3, yUnitVec3, a);
            vec3.normalize(tmpvec3, tmpvec3);
            quat.setAxisAngle(out, tmpvec3, Math.PI);
            return out;
        } else if (dot > 0.999999) {
            out[0] = 0;
            out[1] = 0;
            out[2] = 0;
            out[3] = 1;
            return out;
        } else {
            vec3.cross(tmpvec3, a, b);
            out[0] = tmpvec3[0];
            out[1] = tmpvec3[1];
            out[2] = tmpvec3[2];
            out[3] = 1 + dot;
            return quat.normalize(out, out);
        }
    };
})();

/**
 * Sets the specified quaternion with values corresponding to the given
 * axes. Each axis is a vec3 and is expected to be unit length and
 * perpendicular to all other specified axes.
 *
 * @param {vec3} view  the vector representing the viewing direction
 * @param {vec3} right the vector representing the local "right" direction
 * @param {vec3} up    the vector representing the local "up" direction
 * @returns {quat} out
 */
quat.setAxes = (function() {
    var matr = mat3.create();

    return function(out, view, right, up) {
        matr[0] = right[0];
        matr[3] = right[1];
        matr[6] = right[2];

        matr[1] = up[0];
        matr[4] = up[1];
        matr[7] = up[2];

        matr[2] = -view[0];
        matr[5] = -view[1];
        matr[8] = -view[2];

        return quat.normalize(out, quat.fromMat3(out, matr));
    };
})();

/**
 * Creates a new quat initialized with values from an existing quaternion
 *
 * @param {quat} a quaternion to clone
 * @returns {quat} a new quaternion
 * @function
 */
quat.clone = vec4.clone;

/**
 * Creates a new quat initialized with the given values
 *
 * @param {Number} x X component
 * @param {Number} y Y component
 * @param {Number} z Z component
 * @param {Number} w W component
 * @returns {quat} a new quaternion
 * @function
 */
quat.fromValues = vec4.fromValues;

/**
 * Copy the values from one quat to another
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the source quaternion
 * @returns {quat} out
 * @function
 */
quat.copy = vec4.copy;

/**
 * Set the components of a quat to the given values
 *
 * @param {quat} out the receiving quaternion
 * @param {Number} x X component
 * @param {Number} y Y component
 * @param {Number} z Z component
 * @param {Number} w W component
 * @returns {quat} out
 * @function
 */
quat.set = vec4.set;

/**
 * Set a quat to the identity quaternion
 *
 * @param {quat} out the receiving quaternion
 * @returns {quat} out
 */
quat.identity = function(out) {
    out[0] = 0;
    out[1] = 0;
    out[2] = 0;
    out[3] = 1;
    return out;
};

/**
 * Sets a quat from the given angle and rotation axis,
 * then returns it.
 *
 * @param {quat} out the receiving quaternion
 * @param {vec3} axis the axis around which to rotate
 * @param {Number} rad the angle in radians
 * @returns {quat} out
 **/
quat.setAxisAngle = function(out, axis, rad) {
    rad = rad * 0.5;
    var s = Math.sin(rad);
    out[0] = s * axis[0];
    out[1] = s * axis[1];
    out[2] = s * axis[2];
    out[3] = Math.cos(rad);
    return out;
};

/**
 * Gets the rotation axis and angle for a given
 *  quaternion. If a quaternion is created with
 *  setAxisAngle, this method will return the same
 *  values as providied in the original parameter list
 *  OR functionally equivalent values.
 * Example: The quaternion formed by axis [0, 0, 1] and
 *  angle -90 is the same as the quaternion formed by
 *  [0, 0, 1] and 270. This method favors the latter.
 * @param  {vec3} out_axis  Vector receiving the axis of rotation
 * @param  {quat} q     Quaternion to be decomposed
 * @return {Number}     Angle, in radians, of the rotation
 */
quat.getAxisAngle = function(out_axis, q) {
    var rad = Math.acos(q[3]) * 2.0;
    var s = Math.sin(rad / 2.0);
    if (s != 0.0) {
        out_axis[0] = q[0] / s;
        out_axis[1] = q[1] / s;
        out_axis[2] = q[2] / s;
    } else {
        // If s is zero, return any axis (no rotation - axis does not matter)
        out_axis[0] = 1;
        out_axis[1] = 0;
        out_axis[2] = 0;
    }
    return rad;
};

/**
 * Adds two quat's
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @returns {quat} out
 * @function
 */
quat.add = vec4.add;

/**
 * Multiplies two quat's
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @returns {quat} out
 */
quat.multiply = function(out, a, b) {
    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
        bx = b[0], by = b[1], bz = b[2], bw = b[3];

    out[0] = ax * bw + aw * bx + ay * bz - az * by;
    out[1] = ay * bw + aw * by + az * bx - ax * bz;
    out[2] = az * bw + aw * bz + ax * by - ay * bx;
    out[3] = aw * bw - ax * bx - ay * by - az * bz;
    return out;
};

/**
 * Alias for {@link quat.multiply}
 * @function
 */
quat.mul = quat.multiply;

/**
 * Scales a quat by a scalar number
 *
 * @param {quat} out the receiving vector
 * @param {quat} a the vector to scale
 * @param {Number} b amount to scale the vector by
 * @returns {quat} out
 * @function
 */
quat.scale = vec4.scale;

/**
 * Rotates a quaternion by the given angle about the X axis
 *
 * @param {quat} out quat receiving operation result
 * @param {quat} a quat to rotate
 * @param {number} rad angle (in radians) to rotate
 * @returns {quat} out
 */
quat.rotateX = function (out, a, rad) {
    rad *= 0.5; 

    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
        bx = Math.sin(rad), bw = Math.cos(rad);

    out[0] = ax * bw + aw * bx;
    out[1] = ay * bw + az * bx;
    out[2] = az * bw - ay * bx;
    out[3] = aw * bw - ax * bx;
    return out;
};

/**
 * Rotates a quaternion by the given angle about the Y axis
 *
 * @param {quat} out quat receiving operation result
 * @param {quat} a quat to rotate
 * @param {number} rad angle (in radians) to rotate
 * @returns {quat} out
 */
quat.rotateY = function (out, a, rad) {
    rad *= 0.5; 

    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
        by = Math.sin(rad), bw = Math.cos(rad);

    out[0] = ax * bw - az * by;
    out[1] = ay * bw + aw * by;
    out[2] = az * bw + ax * by;
    out[3] = aw * bw - ay * by;
    return out;
};

/**
 * Rotates a quaternion by the given angle about the Z axis
 *
 * @param {quat} out quat receiving operation result
 * @param {quat} a quat to rotate
 * @param {number} rad angle (in radians) to rotate
 * @returns {quat} out
 */
quat.rotateZ = function (out, a, rad) {
    rad *= 0.5; 

    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
        bz = Math.sin(rad), bw = Math.cos(rad);

    out[0] = ax * bw + ay * bz;
    out[1] = ay * bw - ax * bz;
    out[2] = az * bw + aw * bz;
    out[3] = aw * bw - az * bz;
    return out;
};

/**
 * Calculates the W component of a quat from the X, Y, and Z components.
 * Assumes that quaternion is 1 unit in length.
 * Any existing W component will be ignored.
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a quat to calculate W component of
 * @returns {quat} out
 */
quat.calculateW = function (out, a) {
    var x = a[0], y = a[1], z = a[2];

    out[0] = x;
    out[1] = y;
    out[2] = z;
    out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
    return out;
};

/**
 * Calculates the dot product of two quat's
 *
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @returns {Number} dot product of a and b
 * @function
 */
quat.dot = vec4.dot;

/**
 * Performs a linear interpolation between two quat's
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {quat} out
 * @function
 */
quat.lerp = vec4.lerp;

/**
 * Performs a spherical linear interpolation between two quat
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {quat} out
 */
quat.slerp = function (out, a, b, t) {
    // benchmarks:
    //    http://jsperf.com/quaternion-slerp-implementations

    var ax = a[0], ay = a[1], az = a[2], aw = a[3],
        bx = b[0], by = b[1], bz = b[2], bw = b[3];

    var        omega, cosom, sinom, scale0, scale1;

    // calc cosine
    cosom = ax * bx + ay * by + az * bz + aw * bw;
    // adjust signs (if necessary)
    if ( cosom < 0.0 ) {
        cosom = -cosom;
        bx = - bx;
        by = - by;
        bz = - bz;
        bw = - bw;
    }
    // calculate coefficients
    if ( (1.0 - cosom) > 0.000001 ) {
        // standard case (slerp)
        omega  = Math.acos(cosom);
        sinom  = Math.sin(omega);
        scale0 = Math.sin((1.0 - t) * omega) / sinom;
        scale1 = Math.sin(t * omega) / sinom;
    } else {        
        // "from" and "to" quaternions are very close 
        //  ... so we can do a linear interpolation
        scale0 = 1.0 - t;
        scale1 = t;
    }
    // calculate final values
    out[0] = scale0 * ax + scale1 * bx;
    out[1] = scale0 * ay + scale1 * by;
    out[2] = scale0 * az + scale1 * bz;
    out[3] = scale0 * aw + scale1 * bw;
    
    return out;
};

/**
 * Performs a spherical linear interpolation with two control points
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @param {quat} c the third operand
 * @param {quat} d the fourth operand
 * @param {Number} t interpolation amount
 * @returns {quat} out
 */
quat.sqlerp = (function () {
  var temp1 = quat.create();
  var temp2 = quat.create();
  
  return function (out, a, b, c, d, t) {
    quat.slerp(temp1, a, d, t);
    quat.slerp(temp2, b, c, t);
    quat.slerp(out, temp1, temp2, 2 * t * (1 - t));
    
    return out;
  };
}());

/**
 * Calculates the inverse of a quat
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a quat to calculate inverse of
 * @returns {quat} out
 */
quat.invert = function(out, a) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
        dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
        invDot = dot ? 1.0/dot : 0;
    
    // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0

    out[0] = -a0*invDot;
    out[1] = -a1*invDot;
    out[2] = -a2*invDot;
    out[3] = a3*invDot;
    return out;
};

/**
 * Calculates the conjugate of a quat
 * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a quat to calculate conjugate of
 * @returns {quat} out
 */
quat.conjugate = function (out, a) {
    out[0] = -a[0];
    out[1] = -a[1];
    out[2] = -a[2];
    out[3] = a[3];
    return out;
};

/**
 * Calculates the length of a quat
 *
 * @param {quat} a vector to calculate length of
 * @returns {Number} length of a
 * @function
 */
quat.length = vec4.length;

/**
 * Alias for {@link quat.length}
 * @function
 */
quat.len = quat.length;

/**
 * Calculates the squared length of a quat
 *
 * @param {quat} a vector to calculate squared length of
 * @returns {Number} squared length of a
 * @function
 */
quat.squaredLength = vec4.squaredLength;

/**
 * Alias for {@link quat.squaredLength}
 * @function
 */
quat.sqrLen = quat.squaredLength;

/**
 * Normalize a quat
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a quaternion to normalize
 * @returns {quat} out
 * @function
 */
quat.normalize = vec4.normalize;

/**
 * Creates a quaternion from the given 3x3 rotation matrix.
 *
 * NOTE: The resultant quaternion is not normalized, so you should be sure
 * to renormalize the quaternion yourself where necessary.
 *
 * @param {quat} out the receiving quaternion
 * @param {mat3} m rotation matrix
 * @returns {quat} out
 * @function
 */
quat.fromMat3 = function(out, m) {
    // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
    // article "Quaternion Calculus and Fast Animation".
    var fTrace = m[0] + m[4] + m[8];
    var fRoot;

    if ( fTrace > 0.0 ) {
        // |w| > 1/2, may as well choose w > 1/2
        fRoot = Math.sqrt(fTrace + 1.0);  // 2w
        out[3] = 0.5 * fRoot;
        fRoot = 0.5/fRoot;  // 1/(4w)
        out[0] = (m[5]-m[7])*fRoot;
        out[1] = (m[6]-m[2])*fRoot;
        out[2] = (m[1]-m[3])*fRoot;
    } else {
        // |w| <= 1/2
        var i = 0;
        if ( m[4] > m[0] )
          i = 1;
        if ( m[8] > m[i*3+i] )
          i = 2;
        var j = (i+1)%3;
        var k = (i+2)%3;
        
        fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
        out[i] = 0.5 * fRoot;
        fRoot = 0.5 / fRoot;
        out[3] = (m[j*3+k] - m[k*3+j]) * fRoot;
        out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
        out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
    }
    
    return out;
};

/**
 * Returns a string representation of a quatenion
 *
 * @param {quat} vec vector to represent as a string
 * @returns {String} string representation of the vector
 */
quat.str = function (a) {
    return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
};

/**
 * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)
 *
 * @param {quat} a The first quaternion.
 * @param {quat} b The second quaternion.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
quat.exactEquals = vec4.exactEquals;

/**
 * Returns whether or not the quaternions have approximately the same elements in the same position.
 *
 * @param {quat} a The first vector.
 * @param {quat} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
quat.equals = vec4.equals;

module.exports = quat;

},{"./common.js":169,"./mat3.js":172,"./vec3.js":176,"./vec4.js":177}],175:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 2 Dimensional Vector
 * @name vec2
 */
var vec2 = {};

/**
 * Creates a new, empty vec2
 *
 * @returns {vec2} a new 2D vector
 */
vec2.create = function() {
    var out = new glMatrix.ARRAY_TYPE(2);
    out[0] = 0;
    out[1] = 0;
    return out;
};

/**
 * Creates a new vec2 initialized with values from an existing vector
 *
 * @param {vec2} a vector to clone
 * @returns {vec2} a new 2D vector
 */
vec2.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(2);
    out[0] = a[0];
    out[1] = a[1];
    return out;
};

/**
 * Creates a new vec2 initialized with the given values
 *
 * @param {Number} x X component
 * @param {Number} y Y component
 * @returns {vec2} a new 2D vector
 */
vec2.fromValues = function(x, y) {
    var out = new glMatrix.ARRAY_TYPE(2);
    out[0] = x;
    out[1] = y;
    return out;
};

/**
 * Copy the values from one vec2 to another
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the source vector
 * @returns {vec2} out
 */
vec2.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    return out;
};

/**
 * Set the components of a vec2 to the given values
 *
 * @param {vec2} out the receiving vector
 * @param {Number} x X component
 * @param {Number} y Y component
 * @returns {vec2} out
 */
vec2.set = function(out, x, y) {
    out[0] = x;
    out[1] = y;
    return out;
};

/**
 * Adds two vec2's
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec2} out
 */
vec2.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    return out;
};

/**
 * Subtracts vector b from vector a
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec2} out
 */
vec2.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    return out;
};

/**
 * Alias for {@link vec2.subtract}
 * @function
 */
vec2.sub = vec2.subtract;

/**
 * Multiplies two vec2's
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec2} out
 */
vec2.multiply = function(out, a, b) {
    out[0] = a[0] * b[0];
    out[1] = a[1] * b[1];
    return out;
};

/**
 * Alias for {@link vec2.multiply}
 * @function
 */
vec2.mul = vec2.multiply;

/**
 * Divides two vec2's
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec2} out
 */
vec2.divide = function(out, a, b) {
    out[0] = a[0] / b[0];
    out[1] = a[1] / b[1];
    return out;
};

/**
 * Alias for {@link vec2.divide}
 * @function
 */
vec2.div = vec2.divide;

/**
 * Math.ceil the components of a vec2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a vector to ceil
 * @returns {vec2} out
 */
vec2.ceil = function (out, a) {
    out[0] = Math.ceil(a[0]);
    out[1] = Math.ceil(a[1]);
    return out;
};

/**
 * Math.floor the components of a vec2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a vector to floor
 * @returns {vec2} out
 */
vec2.floor = function (out, a) {
    out[0] = Math.floor(a[0]);
    out[1] = Math.floor(a[1]);
    return out;
};

/**
 * Returns the minimum of two vec2's
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec2} out
 */
vec2.min = function(out, a, b) {
    out[0] = Math.min(a[0], b[0]);
    out[1] = Math.min(a[1], b[1]);
    return out;
};

/**
 * Returns the maximum of two vec2's
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec2} out
 */
vec2.max = function(out, a, b) {
    out[0] = Math.max(a[0], b[0]);
    out[1] = Math.max(a[1], b[1]);
    return out;
};

/**
 * Math.round the components of a vec2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a vector to round
 * @returns {vec2} out
 */
vec2.round = function (out, a) {
    out[0] = Math.round(a[0]);
    out[1] = Math.round(a[1]);
    return out;
};

/**
 * Scales a vec2 by a scalar number
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the vector to scale
 * @param {Number} b amount to scale the vector by
 * @returns {vec2} out
 */
vec2.scale = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    return out;
};

/**
 * Adds two vec2's after scaling the second operand by a scalar value
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @param {Number} scale the amount to scale b by before adding
 * @returns {vec2} out
 */
vec2.scaleAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    return out;
};

/**
 * Calculates the euclidian distance between two vec2's
 *
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {Number} distance between a and b
 */
vec2.distance = function(a, b) {
    var x = b[0] - a[0],
        y = b[1] - a[1];
    return Math.sqrt(x*x + y*y);
};

/**
 * Alias for {@link vec2.distance}
 * @function
 */
vec2.dist = vec2.distance;

/**
 * Calculates the squared euclidian distance between two vec2's
 *
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {Number} squared distance between a and b
 */
vec2.squaredDistance = function(a, b) {
    var x = b[0] - a[0],
        y = b[1] - a[1];
    return x*x + y*y;
};

/**
 * Alias for {@link vec2.squaredDistance}
 * @function
 */
vec2.sqrDist = vec2.squaredDistance;

/**
 * Calculates the length of a vec2
 *
 * @param {vec2} a vector to calculate length of
 * @returns {Number} length of a
 */
vec2.length = function (a) {
    var x = a[0],
        y = a[1];
    return Math.sqrt(x*x + y*y);
};

/**
 * Alias for {@link vec2.length}
 * @function
 */
vec2.len = vec2.length;

/**
 * Calculates the squared length of a vec2
 *
 * @param {vec2} a vector to calculate squared length of
 * @returns {Number} squared length of a
 */
vec2.squaredLength = function (a) {
    var x = a[0],
        y = a[1];
    return x*x + y*y;
};

/**
 * Alias for {@link vec2.squaredLength}
 * @function
 */
vec2.sqrLen = vec2.squaredLength;

/**
 * Negates the components of a vec2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a vector to negate
 * @returns {vec2} out
 */
vec2.negate = function(out, a) {
    out[0] = -a[0];
    out[1] = -a[1];
    return out;
};

/**
 * Returns the inverse of the components of a vec2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a vector to invert
 * @returns {vec2} out
 */
vec2.inverse = function(out, a) {
  out[0] = 1.0 / a[0];
  out[1] = 1.0 / a[1];
  return out;
};

/**
 * Normalize a vec2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a vector to normalize
 * @returns {vec2} out
 */
vec2.normalize = function(out, a) {
    var x = a[0],
        y = a[1];
    var len = x*x + y*y;
    if (len > 0) {
        //TODO: evaluate use of glm_invsqrt here?
        len = 1 / Math.sqrt(len);
        out[0] = a[0] * len;
        out[1] = a[1] * len;
    }
    return out;
};

/**
 * Calculates the dot product of two vec2's
 *
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {Number} dot product of a and b
 */
vec2.dot = function (a, b) {
    return a[0] * b[0] + a[1] * b[1];
};

/**
 * Computes the cross product of two vec2's
 * Note that the cross product must by definition produce a 3D vector
 *
 * @param {vec3} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @returns {vec3} out
 */
vec2.cross = function(out, a, b) {
    var z = a[0] * b[1] - a[1] * b[0];
    out[0] = out[1] = 0;
    out[2] = z;
    return out;
};

/**
 * Performs a linear interpolation between two vec2's
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the first operand
 * @param {vec2} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {vec2} out
 */
vec2.lerp = function (out, a, b, t) {
    var ax = a[0],
        ay = a[1];
    out[0] = ax + t * (b[0] - ax);
    out[1] = ay + t * (b[1] - ay);
    return out;
};

/**
 * Generates a random vector with the given scale
 *
 * @param {vec2} out the receiving vector
 * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
 * @returns {vec2} out
 */
vec2.random = function (out, scale) {
    scale = scale || 1.0;
    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
    out[0] = Math.cos(r) * scale;
    out[1] = Math.sin(r) * scale;
    return out;
};

/**
 * Transforms the vec2 with a mat2
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the vector to transform
 * @param {mat2} m matrix to transform with
 * @returns {vec2} out
 */
vec2.transformMat2 = function(out, a, m) {
    var x = a[0],
        y = a[1];
    out[0] = m[0] * x + m[2] * y;
    out[1] = m[1] * x + m[3] * y;
    return out;
};

/**
 * Transforms the vec2 with a mat2d
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the vector to transform
 * @param {mat2d} m matrix to transform with
 * @returns {vec2} out
 */
vec2.transformMat2d = function(out, a, m) {
    var x = a[0],
        y = a[1];
    out[0] = m[0] * x + m[2] * y + m[4];
    out[1] = m[1] * x + m[3] * y + m[5];
    return out;
};

/**
 * Transforms the vec2 with a mat3
 * 3rd vector component is implicitly '1'
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the vector to transform
 * @param {mat3} m matrix to transform with
 * @returns {vec2} out
 */
vec2.transformMat3 = function(out, a, m) {
    var x = a[0],
        y = a[1];
    out[0] = m[0] * x + m[3] * y + m[6];
    out[1] = m[1] * x + m[4] * y + m[7];
    return out;
};

/**
 * Transforms the vec2 with a mat4
 * 3rd vector component is implicitly '0'
 * 4th vector component is implicitly '1'
 *
 * @param {vec2} out the receiving vector
 * @param {vec2} a the vector to transform
 * @param {mat4} m matrix to transform with
 * @returns {vec2} out
 */
vec2.transformMat4 = function(out, a, m) {
    var x = a[0], 
        y = a[1];
    out[0] = m[0] * x + m[4] * y + m[12];
    out[1] = m[1] * x + m[5] * y + m[13];
    return out;
};

/**
 * Perform some operation over an array of vec2s.
 *
 * @param {Array} a the array of vectors to iterate over
 * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
 * @param {Number} offset Number of elements to skip at the beginning of the array
 * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
 * @param {Function} fn Function to call for each vector in the array
 * @param {Object} [arg] additional argument to pass to fn
 * @returns {Array} a
 * @function
 */
vec2.forEach = (function() {
    var vec = vec2.create();

    return function(a, stride, offset, count, fn, arg) {
        var i, l;
        if(!stride) {
            stride = 2;
        }

        if(!offset) {
            offset = 0;
        }
        
        if(count) {
            l = Math.min((count * stride) + offset, a.length);
        } else {
            l = a.length;
        }

        for(i = offset; i < l; i += stride) {
            vec[0] = a[i]; vec[1] = a[i+1];
            fn(vec, vec, arg);
            a[i] = vec[0]; a[i+1] = vec[1];
        }
        
        return a;
    };
})();

/**
 * Returns a string representation of a vector
 *
 * @param {vec2} vec vector to represent as a string
 * @returns {String} string representation of the vector
 */
vec2.str = function (a) {
    return 'vec2(' + a[0] + ', ' + a[1] + ')';
};

/**
 * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)
 *
 * @param {vec2} a The first vector.
 * @param {vec2} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
vec2.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1];
};

/**
 * Returns whether or not the vectors have approximately the same elements in the same position.
 *
 * @param {vec2} a The first vector.
 * @param {vec2} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
vec2.equals = function (a, b) {
    var a0 = a[0], a1 = a[1];
    var b0 = b[0], b1 = b[1];
    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)));
};

module.exports = vec2;

},{"./common.js":169}],176:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 3 Dimensional Vector
 * @name vec3
 */
var vec3 = {};

/**
 * Creates a new, empty vec3
 *
 * @returns {vec3} a new 3D vector
 */
vec3.create = function() {
    var out = new glMatrix.ARRAY_TYPE(3);
    out[0] = 0;
    out[1] = 0;
    out[2] = 0;
    return out;
};

/**
 * Creates a new vec3 initialized with values from an existing vector
 *
 * @param {vec3} a vector to clone
 * @returns {vec3} a new 3D vector
 */
vec3.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(3);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    return out;
};

/**
 * Creates a new vec3 initialized with the given values
 *
 * @param {Number} x X component
 * @param {Number} y Y component
 * @param {Number} z Z component
 * @returns {vec3} a new 3D vector
 */
vec3.fromValues = function(x, y, z) {
    var out = new glMatrix.ARRAY_TYPE(3);
    out[0] = x;
    out[1] = y;
    out[2] = z;
    return out;
};

/**
 * Copy the values from one vec3 to another
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the source vector
 * @returns {vec3} out
 */
vec3.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    return out;
};

/**
 * Set the components of a vec3 to the given values
 *
 * @param {vec3} out the receiving vector
 * @param {Number} x X component
 * @param {Number} y Y component
 * @param {Number} z Z component
 * @returns {vec3} out
 */
vec3.set = function(out, x, y, z) {
    out[0] = x;
    out[1] = y;
    out[2] = z;
    return out;
};

/**
 * Adds two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    out[2] = a[2] + b[2];
    return out;
};

/**
 * Subtracts vector b from vector a
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    out[2] = a[2] - b[2];
    return out;
};

/**
 * Alias for {@link vec3.subtract}
 * @function
 */
vec3.sub = vec3.subtract;

/**
 * Multiplies two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.multiply = function(out, a, b) {
    out[0] = a[0] * b[0];
    out[1] = a[1] * b[1];
    out[2] = a[2] * b[2];
    return out;
};

/**
 * Alias for {@link vec3.multiply}
 * @function
 */
vec3.mul = vec3.multiply;

/**
 * Divides two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.divide = function(out, a, b) {
    out[0] = a[0] / b[0];
    out[1] = a[1] / b[1];
    out[2] = a[2] / b[2];
    return out;
};

/**
 * Alias for {@link vec3.divide}
 * @function
 */
vec3.div = vec3.divide;

/**
 * Math.ceil the components of a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to ceil
 * @returns {vec3} out
 */
vec3.ceil = function (out, a) {
    out[0] = Math.ceil(a[0]);
    out[1] = Math.ceil(a[1]);
    out[2] = Math.ceil(a[2]);
    return out;
};

/**
 * Math.floor the components of a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to floor
 * @returns {vec3} out
 */
vec3.floor = function (out, a) {
    out[0] = Math.floor(a[0]);
    out[1] = Math.floor(a[1]);
    out[2] = Math.floor(a[2]);
    return out;
};

/**
 * Returns the minimum of two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.min = function(out, a, b) {
    out[0] = Math.min(a[0], b[0]);
    out[1] = Math.min(a[1], b[1]);
    out[2] = Math.min(a[2], b[2]);
    return out;
};

/**
 * Returns the maximum of two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.max = function(out, a, b) {
    out[0] = Math.max(a[0], b[0]);
    out[1] = Math.max(a[1], b[1]);
    out[2] = Math.max(a[2], b[2]);
    return out;
};

/**
 * Math.round the components of a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to round
 * @returns {vec3} out
 */
vec3.round = function (out, a) {
    out[0] = Math.round(a[0]);
    out[1] = Math.round(a[1]);
    out[2] = Math.round(a[2]);
    return out;
};

/**
 * Scales a vec3 by a scalar number
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the vector to scale
 * @param {Number} b amount to scale the vector by
 * @returns {vec3} out
 */
vec3.scale = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    out[2] = a[2] * b;
    return out;
};

/**
 * Adds two vec3's after scaling the second operand by a scalar value
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @param {Number} scale the amount to scale b by before adding
 * @returns {vec3} out
 */
vec3.scaleAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    out[2] = a[2] + (b[2] * scale);
    return out;
};

/**
 * Calculates the euclidian distance between two vec3's
 *
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {Number} distance between a and b
 */
vec3.distance = function(a, b) {
    var x = b[0] - a[0],
        y = b[1] - a[1],
        z = b[2] - a[2];
    return Math.sqrt(x*x + y*y + z*z);
};

/**
 * Alias for {@link vec3.distance}
 * @function
 */
vec3.dist = vec3.distance;

/**
 * Calculates the squared euclidian distance between two vec3's
 *
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {Number} squared distance between a and b
 */
vec3.squaredDistance = function(a, b) {
    var x = b[0] - a[0],
        y = b[1] - a[1],
        z = b[2] - a[2];
    return x*x + y*y + z*z;
};

/**
 * Alias for {@link vec3.squaredDistance}
 * @function
 */
vec3.sqrDist = vec3.squaredDistance;

/**
 * Calculates the length of a vec3
 *
 * @param {vec3} a vector to calculate length of
 * @returns {Number} length of a
 */
vec3.length = function (a) {
    var x = a[0],
        y = a[1],
        z = a[2];
    return Math.sqrt(x*x + y*y + z*z);
};

/**
 * Alias for {@link vec3.length}
 * @function
 */
vec3.len = vec3.length;

/**
 * Calculates the squared length of a vec3
 *
 * @param {vec3} a vector to calculate squared length of
 * @returns {Number} squared length of a
 */
vec3.squaredLength = function (a) {
    var x = a[0],
        y = a[1],
        z = a[2];
    return x*x + y*y + z*z;
};

/**
 * Alias for {@link vec3.squaredLength}
 * @function
 */
vec3.sqrLen = vec3.squaredLength;

/**
 * Negates the components of a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to negate
 * @returns {vec3} out
 */
vec3.negate = function(out, a) {
    out[0] = -a[0];
    out[1] = -a[1];
    out[2] = -a[2];
    return out;
};

/**
 * Returns the inverse of the components of a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to invert
 * @returns {vec3} out
 */
vec3.inverse = function(out, a) {
  out[0] = 1.0 / a[0];
  out[1] = 1.0 / a[1];
  out[2] = 1.0 / a[2];
  return out;
};

/**
 * Normalize a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to normalize
 * @returns {vec3} out
 */
vec3.normalize = function(out, a) {
    var x = a[0],
        y = a[1],
        z = a[2];
    var len = x*x + y*y + z*z;
    if (len > 0) {
        //TODO: evaluate use of glm_invsqrt here?
        len = 1 / Math.sqrt(len);
        out[0] = a[0] * len;
        out[1] = a[1] * len;
        out[2] = a[2] * len;
    }
    return out;
};

/**
 * Calculates the dot product of two vec3's
 *
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {Number} dot product of a and b
 */
vec3.dot = function (a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
};

/**
 * Computes the cross product of two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
vec3.cross = function(out, a, b) {
    var ax = a[0], ay = a[1], az = a[2],
        bx = b[0], by = b[1], bz = b[2];

    out[0] = ay * bz - az * by;
    out[1] = az * bx - ax * bz;
    out[2] = ax * by - ay * bx;
    return out;
};

/**
 * Performs a linear interpolation between two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {vec3} out
 */
vec3.lerp = function (out, a, b, t) {
    var ax = a[0],
        ay = a[1],
        az = a[2];
    out[0] = ax + t * (b[0] - ax);
    out[1] = ay + t * (b[1] - ay);
    out[2] = az + t * (b[2] - az);
    return out;
};

/**
 * Performs a hermite interpolation with two control points
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @param {vec3} c the third operand
 * @param {vec3} d the fourth operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {vec3} out
 */
vec3.hermite = function (out, a, b, c, d, t) {
  var factorTimes2 = t * t,
      factor1 = factorTimes2 * (2 * t - 3) + 1,
      factor2 = factorTimes2 * (t - 2) + t,
      factor3 = factorTimes2 * (t - 1),
      factor4 = factorTimes2 * (3 - 2 * t);
  
  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
  
  return out;
};

/**
 * Performs a bezier interpolation with two control points
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @param {vec3} c the third operand
 * @param {vec3} d the fourth operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {vec3} out
 */
vec3.bezier = function (out, a, b, c, d, t) {
  var inverseFactor = 1 - t,
      inverseFactorTimesTwo = inverseFactor * inverseFactor,
      factorTimes2 = t * t,
      factor1 = inverseFactorTimesTwo * inverseFactor,
      factor2 = 3 * t * inverseFactorTimesTwo,
      factor3 = 3 * factorTimes2 * inverseFactor,
      factor4 = factorTimes2 * t;
  
  out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;
  out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;
  out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;
  
  return out;
};

/**
 * Generates a random vector with the given scale
 *
 * @param {vec3} out the receiving vector
 * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
 * @returns {vec3} out
 */
vec3.random = function (out, scale) {
    scale = scale || 1.0;

    var r = glMatrix.RANDOM() * 2.0 * Math.PI;
    var z = (glMatrix.RANDOM() * 2.0) - 1.0;
    var zScale = Math.sqrt(1.0-z*z) * scale;

    out[0] = Math.cos(r) * zScale;
    out[1] = Math.sin(r) * zScale;
    out[2] = z * scale;
    return out;
};

/**
 * Transforms the vec3 with a mat4.
 * 4th vector component is implicitly '1'
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the vector to transform
 * @param {mat4} m matrix to transform with
 * @returns {vec3} out
 */
vec3.transformMat4 = function(out, a, m) {
    var x = a[0], y = a[1], z = a[2],
        w = m[3] * x + m[7] * y + m[11] * z + m[15];
    w = w || 1.0;
    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;
    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;
    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;
    return out;
};

/**
 * Transforms the vec3 with a mat3.
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the vector to transform
 * @param {mat4} m the 3x3 matrix to transform with
 * @returns {vec3} out
 */
vec3.transformMat3 = function(out, a, m) {
    var x = a[0], y = a[1], z = a[2];
    out[0] = x * m[0] + y * m[3] + z * m[6];
    out[1] = x * m[1] + y * m[4] + z * m[7];
    out[2] = x * m[2] + y * m[5] + z * m[8];
    return out;
};

/**
 * Transforms the vec3 with a quat
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the vector to transform
 * @param {quat} q quaternion to transform with
 * @returns {vec3} out
 */
vec3.transformQuat = function(out, a, q) {
    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations

    var x = a[0], y = a[1], z = a[2],
        qx = q[0], qy = q[1], qz = q[2], qw = q[3],

        // calculate quat * vec
        ix = qw * x + qy * z - qz * y,
        iy = qw * y + qz * x - qx * z,
        iz = qw * z + qx * y - qy * x,
        iw = -qx * x - qy * y - qz * z;

    // calculate result * inverse quat
    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
    return out;
};

/**
 * Rotate a 3D vector around the x-axis
 * @param {vec3} out The receiving vec3
 * @param {vec3} a The vec3 point to rotate
 * @param {vec3} b The origin of the rotation
 * @param {Number} c The angle of rotation
 * @returns {vec3} out
 */
vec3.rotateX = function(out, a, b, c){
   var p = [], r=[];
	  //Translate point to the origin
	  p[0] = a[0] - b[0];
	  p[1] = a[1] - b[1];
  	p[2] = a[2] - b[2];

	  //perform rotation
	  r[0] = p[0];
	  r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
	  r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);

	  //translate to correct position
	  out[0] = r[0] + b[0];
	  out[1] = r[1] + b[1];
	  out[2] = r[2] + b[2];

  	return out;
};

/**
 * Rotate a 3D vector around the y-axis
 * @param {vec3} out The receiving vec3
 * @param {vec3} a The vec3 point to rotate
 * @param {vec3} b The origin of the rotation
 * @param {Number} c The angle of rotation
 * @returns {vec3} out
 */
vec3.rotateY = function(out, a, b, c){
  	var p = [], r=[];
  	//Translate point to the origin
  	p[0] = a[0] - b[0];
  	p[1] = a[1] - b[1];
  	p[2] = a[2] - b[2];
  
  	//perform rotation
  	r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
  	r[1] = p[1];
  	r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
  
  	//translate to correct position
  	out[0] = r[0] + b[0];
  	out[1] = r[1] + b[1];
  	out[2] = r[2] + b[2];
  
  	return out;
};

/**
 * Rotate a 3D vector around the z-axis
 * @param {vec3} out The receiving vec3
 * @param {vec3} a The vec3 point to rotate
 * @param {vec3} b The origin of the rotation
 * @param {Number} c The angle of rotation
 * @returns {vec3} out
 */
vec3.rotateZ = function(out, a, b, c){
  	var p = [], r=[];
  	//Translate point to the origin
  	p[0] = a[0] - b[0];
  	p[1] = a[1] - b[1];
  	p[2] = a[2] - b[2];
  
  	//perform rotation
  	r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
  	r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
  	r[2] = p[2];
  
  	//translate to correct position
  	out[0] = r[0] + b[0];
  	out[1] = r[1] + b[1];
  	out[2] = r[2] + b[2];
  
  	return out;
};

/**
 * Perform some operation over an array of vec3s.
 *
 * @param {Array} a the array of vectors to iterate over
 * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
 * @param {Number} offset Number of elements to skip at the beginning of the array
 * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
 * @param {Function} fn Function to call for each vector in the array
 * @param {Object} [arg] additional argument to pass to fn
 * @returns {Array} a
 * @function
 */
vec3.forEach = (function() {
    var vec = vec3.create();

    return function(a, stride, offset, count, fn, arg) {
        var i, l;
        if(!stride) {
            stride = 3;
        }

        if(!offset) {
            offset = 0;
        }
        
        if(count) {
            l = Math.min((count * stride) + offset, a.length);
        } else {
            l = a.length;
        }

        for(i = offset; i < l; i += stride) {
            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2];
            fn(vec, vec, arg);
            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2];
        }
        
        return a;
    };
})();

/**
 * Get the angle between two 3D vectors
 * @param {vec3} a The first operand
 * @param {vec3} b The second operand
 * @returns {Number} The angle in radians
 */
vec3.angle = function(a, b) {
   
    var tempA = vec3.fromValues(a[0], a[1], a[2]);
    var tempB = vec3.fromValues(b[0], b[1], b[2]);
 
    vec3.normalize(tempA, tempA);
    vec3.normalize(tempB, tempB);
 
    var cosine = vec3.dot(tempA, tempB);

    if(cosine > 1.0){
        return 0;
    } else {
        return Math.acos(cosine);
    }     
};

/**
 * Returns a string representation of a vector
 *
 * @param {vec3} vec vector to represent as a string
 * @returns {String} string representation of the vector
 */
vec3.str = function (a) {
    return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
};

/**
 * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
 *
 * @param {vec3} a The first vector.
 * @param {vec3} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
vec3.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];
};

/**
 * Returns whether or not the vectors have approximately the same elements in the same position.
 *
 * @param {vec3} a The first vector.
 * @param {vec3} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
vec3.equals = function (a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2];
    var b0 = b[0], b1 = b[1], b2 = b[2];
    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)));
};

module.exports = vec3;

},{"./common.js":169}],177:[function(require,module,exports){
/* Copyright (c) 2015, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE. */

var glMatrix = require("./common.js");

/**
 * @class 4 Dimensional Vector
 * @name vec4
 */
var vec4 = {};

/**
 * Creates a new, empty vec4
 *
 * @returns {vec4} a new 4D vector
 */
vec4.create = function() {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = 0;
    out[1] = 0;
    out[2] = 0;
    out[3] = 0;
    return out;
};

/**
 * Creates a new vec4 initialized with values from an existing vector
 *
 * @param {vec4} a vector to clone
 * @returns {vec4} a new 4D vector
 */
vec4.clone = function(a) {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    return out;
};

/**
 * Creates a new vec4 initialized with the given values
 *
 * @param {Number} x X component
 * @param {Number} y Y component
 * @param {Number} z Z component
 * @param {Number} w W component
 * @returns {vec4} a new 4D vector
 */
vec4.fromValues = function(x, y, z, w) {
    var out = new glMatrix.ARRAY_TYPE(4);
    out[0] = x;
    out[1] = y;
    out[2] = z;
    out[3] = w;
    return out;
};

/**
 * Copy the values from one vec4 to another
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the source vector
 * @returns {vec4} out
 */
vec4.copy = function(out, a) {
    out[0] = a[0];
    out[1] = a[1];
    out[2] = a[2];
    out[3] = a[3];
    return out;
};

/**
 * Set the components of a vec4 to the given values
 *
 * @param {vec4} out the receiving vector
 * @param {Number} x X component
 * @param {Number} y Y component
 * @param {Number} z Z component
 * @param {Number} w W component
 * @returns {vec4} out
 */
vec4.set = function(out, x, y, z, w) {
    out[0] = x;
    out[1] = y;
    out[2] = z;
    out[3] = w;
    return out;
};

/**
 * Adds two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
vec4.add = function(out, a, b) {
    out[0] = a[0] + b[0];
    out[1] = a[1] + b[1];
    out[2] = a[2] + b[2];
    out[3] = a[3] + b[3];
    return out;
};

/**
 * Subtracts vector b from vector a
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
vec4.subtract = function(out, a, b) {
    out[0] = a[0] - b[0];
    out[1] = a[1] - b[1];
    out[2] = a[2] - b[2];
    out[3] = a[3] - b[3];
    return out;
};

/**
 * Alias for {@link vec4.subtract}
 * @function
 */
vec4.sub = vec4.subtract;

/**
 * Multiplies two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
vec4.multiply = function(out, a, b) {
    out[0] = a[0] * b[0];
    out[1] = a[1] * b[1];
    out[2] = a[2] * b[2];
    out[3] = a[3] * b[3];
    return out;
};

/**
 * Alias for {@link vec4.multiply}
 * @function
 */
vec4.mul = vec4.multiply;

/**
 * Divides two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
vec4.divide = function(out, a, b) {
    out[0] = a[0] / b[0];
    out[1] = a[1] / b[1];
    out[2] = a[2] / b[2];
    out[3] = a[3] / b[3];
    return out;
};

/**
 * Alias for {@link vec4.divide}
 * @function
 */
vec4.div = vec4.divide;

/**
 * Math.ceil the components of a vec4
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a vector to ceil
 * @returns {vec4} out
 */
vec4.ceil = function (out, a) {
    out[0] = Math.ceil(a[0]);
    out[1] = Math.ceil(a[1]);
    out[2] = Math.ceil(a[2]);
    out[3] = Math.ceil(a[3]);
    return out;
};

/**
 * Math.floor the components of a vec4
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a vector to floor
 * @returns {vec4} out
 */
vec4.floor = function (out, a) {
    out[0] = Math.floor(a[0]);
    out[1] = Math.floor(a[1]);
    out[2] = Math.floor(a[2]);
    out[3] = Math.floor(a[3]);
    return out;
};

/**
 * Returns the minimum of two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
vec4.min = function(out, a, b) {
    out[0] = Math.min(a[0], b[0]);
    out[1] = Math.min(a[1], b[1]);
    out[2] = Math.min(a[2], b[2]);
    out[3] = Math.min(a[3], b[3]);
    return out;
};

/**
 * Returns the maximum of two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {vec4} out
 */
vec4.max = function(out, a, b) {
    out[0] = Math.max(a[0], b[0]);
    out[1] = Math.max(a[1], b[1]);
    out[2] = Math.max(a[2], b[2]);
    out[3] = Math.max(a[3], b[3]);
    return out;
};

/**
 * Math.round the components of a vec4
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a vector to round
 * @returns {vec4} out
 */
vec4.round = function (out, a) {
    out[0] = Math.round(a[0]);
    out[1] = Math.round(a[1]);
    out[2] = Math.round(a[2]);
    out[3] = Math.round(a[3]);
    return out;
};

/**
 * Scales a vec4 by a scalar number
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the vector to scale
 * @param {Number} b amount to scale the vector by
 * @returns {vec4} out
 */
vec4.scale = function(out, a, b) {
    out[0] = a[0] * b;
    out[1] = a[1] * b;
    out[2] = a[2] * b;
    out[3] = a[3] * b;
    return out;
};

/**
 * Adds two vec4's after scaling the second operand by a scalar value
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @param {Number} scale the amount to scale b by before adding
 * @returns {vec4} out
 */
vec4.scaleAndAdd = function(out, a, b, scale) {
    out[0] = a[0] + (b[0] * scale);
    out[1] = a[1] + (b[1] * scale);
    out[2] = a[2] + (b[2] * scale);
    out[3] = a[3] + (b[3] * scale);
    return out;
};

/**
 * Calculates the euclidian distance between two vec4's
 *
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {Number} distance between a and b
 */
vec4.distance = function(a, b) {
    var x = b[0] - a[0],
        y = b[1] - a[1],
        z = b[2] - a[2],
        w = b[3] - a[3];
    return Math.sqrt(x*x + y*y + z*z + w*w);
};

/**
 * Alias for {@link vec4.distance}
 * @function
 */
vec4.dist = vec4.distance;

/**
 * Calculates the squared euclidian distance between two vec4's
 *
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {Number} squared distance between a and b
 */
vec4.squaredDistance = function(a, b) {
    var x = b[0] - a[0],
        y = b[1] - a[1],
        z = b[2] - a[2],
        w = b[3] - a[3];
    return x*x + y*y + z*z + w*w;
};

/**
 * Alias for {@link vec4.squaredDistance}
 * @function
 */
vec4.sqrDist = vec4.squaredDistance;

/**
 * Calculates the length of a vec4
 *
 * @param {vec4} a vector to calculate length of
 * @returns {Number} length of a
 */
vec4.length = function (a) {
    var x = a[0],
        y = a[1],
        z = a[2],
        w = a[3];
    return Math.sqrt(x*x + y*y + z*z + w*w);
};

/**
 * Alias for {@link vec4.length}
 * @function
 */
vec4.len = vec4.length;

/**
 * Calculates the squared length of a vec4
 *
 * @param {vec4} a vector to calculate squared length of
 * @returns {Number} squared length of a
 */
vec4.squaredLength = function (a) {
    var x = a[0],
        y = a[1],
        z = a[2],
        w = a[3];
    return x*x + y*y + z*z + w*w;
};

/**
 * Alias for {@link vec4.squaredLength}
 * @function
 */
vec4.sqrLen = vec4.squaredLength;

/**
 * Negates the components of a vec4
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a vector to negate
 * @returns {vec4} out
 */
vec4.negate = function(out, a) {
    out[0] = -a[0];
    out[1] = -a[1];
    out[2] = -a[2];
    out[3] = -a[3];
    return out;
};

/**
 * Returns the inverse of the components of a vec4
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a vector to invert
 * @returns {vec4} out
 */
vec4.inverse = function(out, a) {
  out[0] = 1.0 / a[0];
  out[1] = 1.0 / a[1];
  out[2] = 1.0 / a[2];
  out[3] = 1.0 / a[3];
  return out;
};

/**
 * Normalize a vec4
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a vector to normalize
 * @returns {vec4} out
 */
vec4.normalize = function(out, a) {
    var x = a[0],
        y = a[1],
        z = a[2],
        w = a[3];
    var len = x*x + y*y + z*z + w*w;
    if (len > 0) {
        len = 1 / Math.sqrt(len);
        out[0] = x * len;
        out[1] = y * len;
        out[2] = z * len;
        out[3] = w * len;
    }
    return out;
};

/**
 * Calculates the dot product of two vec4's
 *
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {Number} dot product of a and b
 */
vec4.dot = function (a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
};

/**
 * Performs a linear interpolation between two vec4's
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {vec4} out
 */
vec4.lerp = function (out, a, b, t) {
    var ax = a[0],
        ay = a[1],
        az = a[2],
        aw = a[3];
    out[0] = ax + t * (b[0] - ax);
    out[1] = ay + t * (b[1] - ay);
    out[2] = az + t * (b[2] - az);
    out[3] = aw + t * (b[3] - aw);
    return out;
};

/**
 * Generates a random vector with the given scale
 *
 * @param {vec4} out the receiving vector
 * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
 * @returns {vec4} out
 */
vec4.random = function (out, scale) {
    scale = scale || 1.0;

    //TODO: This is a pretty awful way of doing this. Find something better.
    out[0] = glMatrix.RANDOM();
    out[1] = glMatrix.RANDOM();
    out[2] = glMatrix.RANDOM();
    out[3] = glMatrix.RANDOM();
    vec4.normalize(out, out);
    vec4.scale(out, out, scale);
    return out;
};

/**
 * Transforms the vec4 with a mat4.
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the vector to transform
 * @param {mat4} m matrix to transform with
 * @returns {vec4} out
 */
vec4.transformMat4 = function(out, a, m) {
    var x = a[0], y = a[1], z = a[2], w = a[3];
    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
    return out;
};

/**
 * Transforms the vec4 with a quat
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the vector to transform
 * @param {quat} q quaternion to transform with
 * @returns {vec4} out
 */
vec4.transformQuat = function(out, a, q) {
    var x = a[0], y = a[1], z = a[2],
        qx = q[0], qy = q[1], qz = q[2], qw = q[3],

        // calculate quat * vec
        ix = qw * x + qy * z - qz * y,
        iy = qw * y + qz * x - qx * z,
        iz = qw * z + qx * y - qy * x,
        iw = -qx * x - qy * y - qz * z;

    // calculate result * inverse quat
    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;
    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;
    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;
    out[3] = a[3];
    return out;
};

/**
 * Perform some operation over an array of vec4s.
 *
 * @param {Array} a the array of vectors to iterate over
 * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
 * @param {Number} offset Number of elements to skip at the beginning of the array
 * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array
 * @param {Function} fn Function to call for each vector in the array
 * @param {Object} [arg] additional argument to pass to fn
 * @returns {Array} a
 * @function
 */
vec4.forEach = (function() {
    var vec = vec4.create();

    return function(a, stride, offset, count, fn, arg) {
        var i, l;
        if(!stride) {
            stride = 4;
        }

        if(!offset) {
            offset = 0;
        }
        
        if(count) {
            l = Math.min((count * stride) + offset, a.length);
        } else {
            l = a.length;
        }

        for(i = offset; i < l; i += stride) {
            vec[0] = a[i]; vec[1] = a[i+1]; vec[2] = a[i+2]; vec[3] = a[i+3];
            fn(vec, vec, arg);
            a[i] = vec[0]; a[i+1] = vec[1]; a[i+2] = vec[2]; a[i+3] = vec[3];
        }
        
        return a;
    };
})();

/**
 * Returns a string representation of a vector
 *
 * @param {vec4} vec vector to represent as a string
 * @returns {String} string representation of the vector
 */
vec4.str = function (a) {
    return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
};

/**
 * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)
 *
 * @param {vec4} a The first vector.
 * @param {vec4} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
vec4.exactEquals = function (a, b) {
    return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];
};

/**
 * Returns whether or not the vectors have approximately the same elements in the same position.
 *
 * @param {vec4} a The first vector.
 * @param {vec4} b The second vector.
 * @returns {Boolean} True if the vectors are equal, false otherwise.
 */
vec4.equals = function (a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3];
    var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
    return (Math.abs(a0 - b0) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a0), Math.abs(b0)) &&
            Math.abs(a1 - b1) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a1), Math.abs(b1)) &&
            Math.abs(a2 - b2) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a2), Math.abs(b2)) &&
            Math.abs(a3 - b3) <= glMatrix.EPSILON*Math.max(1.0, Math.abs(a3), Math.abs(b3)));
};

module.exports = vec4;

},{"./common.js":169}],178:[function(require,module,exports){
'use strict'

var barycentric            = require('barycentric')
var closestPointToTriangle = require('polytope-closest-point/lib/closest_point_2d.js')

module.exports = closestPointToPickLocation

function xformMatrix(m, v) {
  var out = [0,0,0,0]
  for(var i=0; i<4; ++i) {
    for(var j=0; j<4; ++j) {
      out[j] += m[4*i + j] * v[i]
    }
  }
  return out
}

function projectVertex(v, model, view, projection, resolution) {
  var p = xformMatrix(projection,
            xformMatrix(view,
              xformMatrix(model, [v[0], v[1], v[2], 1])))
  for(var i=0; i<3; ++i) {
    p[i] /= p[3]
  }
  return [ 0.5 * resolution[0] * (1.0+p[0]), 0.5 * resolution[1] * (1.0-p[1]) ]
}

function barycentricCoord(simplex, point) {
  if(simplex.length === 2) {
    var d0 = 0.0
    var d1 = 0.0
    for(var i=0; i<2; ++i) {
      d0 += Math.pow(point[i] - simplex[0][i], 2)
      d1 += Math.pow(point[i] - simplex[1][i], 2)
    }
    d0 = Math.sqrt(d0)
    d1 = Math.sqrt(d1)
    if(d0+d1 < 1e-6) {
      return [1,0]
    }
    return [d1/(d0+d1),d0/(d1+d0)]
  } else if(simplex.length === 3) {
    var closestPoint = [0,0]
    closestPointToTriangle(simplex[0], simplex[1], simplex[2], point, closestPoint)
    return barycentric(simplex, closestPoint)
  }
  return []
}

function interpolate(simplex, weights) {
  var result = [0,0,0]
  for(var i=0; i<simplex.length; ++i) {
    var p = simplex[i]
    var w = weights[i]
    for(var j=0; j<3; ++j) {
      result[j] += w * p[j]
    }
  }
  return result
}

function closestPointToPickLocation(simplex, pixelCoord, model, view, projection, resolution) {
  if(simplex.length === 1) {
    return [0, simplex[0].slice()]
  }
  var simplex2D = new Array(simplex.length)
  for(var i=0; i<simplex.length; ++i) {
    simplex2D[i] = projectVertex(simplex[i], model, view, projection, resolution);
  }

  var closestIndex = 0
  var closestDist  = Infinity
  for(var i=0; i<simplex2D.length; ++i) {
    var d2 = 0.0
    for(var j=0; j<2; ++j) {
      d2 += Math.pow(simplex2D[i][j] - pixelCoord[j], 2)
    }
    if(d2 < closestDist) {
      closestDist  = d2
      closestIndex = i
    }
  }

  var weights = barycentricCoord(simplex2D, pixelCoord)
  var s = 0.0
  for(var i=0; i<3; ++i) {
    if(weights[i] < -0.001 ||
       weights[i] > 1.0001) {
      return null
    }
    s += weights[i]
  }
  if(Math.abs(s - 1.0) > 0.001) {
    return null
  }
  return [closestIndex, interpolate(simplex, weights), weights]
}
},{"barycentric":11,"polytope-closest-point/lib/closest_point_2d.js":921}],179:[function(require,module,exports){


var triVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, normal;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model\n           , view\n           , projection;\nuniform vec3 eyePosition\n           , lightPosition;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec4 m_position  = model * vec4(position, 1.0);\n  vec4 t_position  = view * m_position;\n  gl_Position      = projection * t_position;\n  f_color          = color;\n  f_normal         = normal;\n  f_data           = position;\n  f_eyeDirection   = eyePosition   - position;\n  f_lightDirection = lightPosition - position;\n  f_uv             = uv;\n}"
var triFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat cookTorranceSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness,\n  float fresnel) {\n\n  float VdotN = max(dot(viewDirection, surfaceNormal), 0.0);\n  float LdotN = max(dot(lightDirection, surfaceNormal), 0.0);\n\n  //Half angle vector\n  vec3 H = normalize(lightDirection + viewDirection);\n\n  //Geometric term\n  float NdotH = max(dot(surfaceNormal, H), 0.0);\n  float VdotH = max(dot(viewDirection, H), 0.000001);\n  float LdotH = max(dot(lightDirection, H), 0.000001);\n  float G1 = (2.0 * NdotH * VdotN) / VdotH;\n  float G2 = (2.0 * NdotH * LdotN) / LdotH;\n  float G = min(1.0, min(G1, G2));\n  \n  //Distribution term\n  float D = beckmannDistribution_2_0(NdotH, roughness);\n\n  //Fresnel term\n  float F = pow(1.0 - VdotN, fresnel);\n\n  //Multiply terms and done\n  return  G * F * D / max(3.14159265 * VdotN, 0.000001);\n}\n\n\n\nuniform vec3 clipBounds[2];\nuniform float roughness\n            , fresnel\n            , kambient\n            , kdiffuse\n            , kspecular\n            , opacity;\nuniform sampler2D texture;\n\nvarying vec3 f_normal\n           , f_lightDirection\n           , f_eyeDirection\n           , f_data;\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(f_normal);\n  vec3 L = normalize(f_lightDirection);\n  vec3 V = normalize(f_eyeDirection);\n  \n  if(!gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = cookTorranceSpecular_1_1(L, V, N, roughness, fresnel);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  vec4 surfaceColor = f_color * texture2D(texture, f_uv);\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = litColor * opacity;\n}"
var edgeVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\n\nuniform mat4 model, view, projection;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_color = color;\n  f_data  = position;\n  f_uv    = uv;\n}"
var edgeFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 clipBounds[2];\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec3 f_data;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(f_data, clipBounds[0])) || \n     any(greaterThan(f_data, clipBounds[1]))) {\n    discard;\n  }\n\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
var pointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 uv;\nattribute float pointSize;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position = projection * view * model * vec4(position, 1.0);\n  }\n  gl_PointSize = pointSize;\n  f_color = color;\n  f_uv = uv;\n}"
var pointFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D texture;\nuniform float opacity;\n\nvarying vec4 f_color;\nvarying vec2 f_uv;\n\nvoid main() {\n  vec2 pointR = gl_PointCoord.xy - vec2(0.5,0.5);\n  if(dot(pointR, pointR) > 0.25) {\n    discard;\n  }\n  gl_FragColor = f_color * texture2D(texture, f_uv) * opacity;\n}"
var pickVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n  f_id        = id;\n  f_position  = position;\n}"
var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3  clipBounds[2];\nuniform float pickId;\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(f_position, clipBounds[0])) || \n     any(greaterThan(f_position, clipBounds[1]))) {\n    discard;\n  }\n  gl_FragColor = vec4(pickId, f_id.xyz);\n}"
var pickPointVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3  position;\nattribute float pointSize;\nattribute vec4  id;\n\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec3 f_position;\nvarying vec4 f_id;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || \n     any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    gl_Position  = projection * view * model * vec4(position, 1.0);\n    gl_PointSize = pointSize;\n  }\n  f_id         = id;\n  f_position   = position;\n}"
var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\n\nuniform mat4 model, view, projection;\n\nvoid main() {\n  gl_Position = projection * view * model * vec4(position, 1.0);\n}"
var contourFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 contourColor;\n\nvoid main() {\n  gl_FragColor = vec4(contourColor,1);\n}\n"

exports.meshShader = {
  vertex:   triVertSrc,
  fragment: triFragSrc,
  attributes: [
    {name: 'position', type: 'vec3'},
    {name: 'normal', type: 'vec3'},
    {name: 'color', type: 'vec4'},
    {name: 'uv', type: 'vec2'}
  ]
}
exports.wireShader = {
  vertex:   edgeVertSrc,
  fragment: edgeFragSrc,
  attributes: [
    {name: 'position', type: 'vec3'},
    {name: 'color', type: 'vec4'},
    {name: 'uv', type: 'vec2'}
  ]
}
exports.pointShader = {
  vertex:   pointVertSrc,
  fragment: pointFragSrc,
  attributes: [
    {name: 'position', type: 'vec3'},
    {name: 'color', type: 'vec4'},
    {name: 'uv', type: 'vec2'},
    {name: 'pointSize', type: 'float'}
  ]
}
exports.pickShader = {
  vertex:   pickVertSrc,
  fragment: pickFragSrc,
  attributes: [
    {name: 'position', type: 'vec3'},
    {name: 'id', type: 'vec4'}
  ]
}
exports.pointPickShader = {
  vertex:   pickPointVertSrc,
  fragment: pickFragSrc,
  attributes: [
    {name: 'position', type: 'vec3'},
    {name: 'pointSize', type: 'float'},
    {name: 'id', type: 'vec4'}
  ]
}
exports.contourShader = {
  vertex:   contourVertSrc,
  fragment: contourFragSrc,
  attributes: [
    {name: 'position', type: 'vec3'}
  ]
}

},{}],180:[function(require,module,exports){
'use strict'

var DEFAULT_VERTEX_NORMALS_EPSILON = 1e-6; // may be too large if triangles are very small
var DEFAULT_FACE_NORMALS_EPSILON = 1e-6;

var createShader  = require('gl-shader')
var createBuffer  = require('gl-buffer')
var createVAO     = require('gl-vao')
var createTexture = require('gl-texture2d')
var normals       = require('normals')
var multiply      = require('gl-mat4/multiply')
var invert        = require('gl-mat4/invert')
var ndarray       = require('ndarray')
var colormap      = require('colormap')
var getContour    = require('simplicial-complex-contour')
var pool          = require('typedarray-pool')
var shaders       = require('./lib/shaders')
var closestPoint  = require('./lib/closest-point')

var meshShader    = shaders.meshShader
var wireShader    = shaders.wireShader
var pointShader   = shaders.pointShader
var pickShader    = shaders.pickShader
var pointPickShader = shaders.pointPickShader
var contourShader = shaders.contourShader

var identityMatrix = [
  1,0,0,0,
  0,1,0,0,
  0,0,1,0,
  0,0,0,1]

function SimplicialMesh(gl
  , texture
  , triShader
  , lineShader
  , pointShader
  , pickShader
  , pointPickShader
  , contourShader
  , trianglePositions
  , triangleIds
  , triangleColors
  , triangleUVs
  , triangleNormals
  , triangleVAO
  , edgePositions
  , edgeIds
  , edgeColors
  , edgeUVs
  , edgeVAO
  , pointPositions
  , pointIds
  , pointColors
  , pointUVs
  , pointSizes
  , pointVAO
  , contourPositions
  , contourVAO) {

  this.gl                = gl
  this.cells             = []
  this.positions         = []
  this.intensity         = []
  this.texture           = texture
  this.dirty             = true

  this.triShader         = triShader
  this.lineShader        = lineShader
  this.pointShader       = pointShader
  this.pickShader        = pickShader
  this.pointPickShader   = pointPickShader
  this.contourShader     = contourShader

  this.trianglePositions = trianglePositions
  this.triangleColors    = triangleColors
  this.triangleNormals   = triangleNormals
  this.triangleUVs       = triangleUVs
  this.triangleIds       = triangleIds
  this.triangleVAO       = triangleVAO
  this.triangleCount     = 0

  this.lineWidth         = 1
  this.edgePositions     = edgePositions
  this.edgeColors        = edgeColors
  this.edgeUVs           = edgeUVs
  this.edgeIds           = edgeIds
  this.edgeVAO           = edgeVAO
  this.edgeCount         = 0

  this.pointPositions    = pointPositions
  this.pointColors       = pointColors
  this.pointUVs          = pointUVs
  this.pointSizes        = pointSizes
  this.pointIds          = pointIds
  this.pointVAO          = pointVAO
  this.pointCount        = 0

  this.contourLineWidth  = 1
  this.contourPositions  = contourPositions
  this.contourVAO        = contourVAO
  this.contourCount      = 0
  this.contourColor      = [0,0,0]
  this.contourEnable     = true

  this.pickId            = 1
  this.bounds            = [
    [ Infinity, Infinity, Infinity],
    [-Infinity,-Infinity,-Infinity] ]
  this.clipBounds        = [
    [-Infinity,-Infinity,-Infinity],
    [ Infinity, Infinity, Infinity] ]

  this.lightPosition = [1e5, 1e5, 0]
  this.ambientLight  = 0.8
  this.diffuseLight  = 0.8
  this.specularLight = 2.0
  this.roughness     = 0.5
  this.fresnel       = 1.5

  this.opacity       = 1.0

  this._model       = identityMatrix
  this._view        = identityMatrix
  this._projection  = identityMatrix
  this._resolution  = [1,1]
}

var proto = SimplicialMesh.prototype

proto.isOpaque = function() {
  return this.opacity >= 1
}

proto.isTransparent = function() {
  return this.opacity < 1
}

proto.pickSlots = 1

proto.setPickBase = function(id) {
  this.pickId = id
}

function genColormap(param) {
  var colors = colormap({
      colormap: param
    , nshades:  256
    , format:  'rgba'
  })

  var result = new Uint8Array(256*4)
  for(var i=0; i<256; ++i) {
    var c = colors[i]
    for(var j=0; j<3; ++j) {
      result[4*i+j] = c[j]
    }
    result[4*i+3] = c[3]*255
  }

  return ndarray(result, [256,256,4], [4,0,1])
}

function unpackIntensity(cells, numVerts, cellIntensity) {
  var result = new Array(numVerts)
  for(var i=0; i<numVerts; ++i) {
    result[i] = 0
  }
  var numCells = cells.length
  for(var i=0; i<numCells; ++i) {
    var c = cells[i]
    for(var j=0; j<c.length; ++j) {
      result[c[j]] = cellIntensity[i]
    }
  }
  return result
}

function takeZComponent(array) {
  var n = array.length
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = array[i][2]
  }
  return result
}

proto.highlight = function(selection) {
  if(!selection || !this.contourEnable) {
    this.contourCount = 0
    return
  }
  var level = getContour(this.cells, this.intensity, selection.intensity)
  var cells         = level.cells
  var vertexIds     = level.vertexIds
  var vertexWeights = level.vertexWeights
  var numCells = cells.length
  var result = pool.mallocFloat32(2 * 3 * numCells)
  var ptr = 0
  for(var i=0; i<numCells; ++i) {
    var c = cells[i]
    for(var j=0; j<2; ++j) {
      var v = c[0]
      if(c.length === 2) {
        v = c[j]
      }
      var a = vertexIds[v][0]
      var b = vertexIds[v][1]
      var w = vertexWeights[v]
      var wi = 1.0 - w
      var pa = this.positions[a]
      var pb = this.positions[b]
      for(var k=0; k<3; ++k) {
        result[ptr++] = w * pa[k] + wi * pb[k]
      }
    }
  }
  this.contourCount = (ptr / 3)|0
  this.contourPositions.update(result.subarray(0, ptr))
  pool.free(result)
}

proto.update = function(params) {
  params = params || {}
  var gl = this.gl

  this.dirty = true

  if('contourEnable' in params) {
    this.contourEnable = params.contourEnable
  }
  if('contourColor' in params) {
    this.contourColor = params.contourColor
  }
  if('lineWidth' in params) {
    this.lineWidth = params.lineWidth
  }
  if('lightPosition' in params) {
    this.lightPosition = params.lightPosition
  }
  if('opacity' in params) {
    this.opacity = params.opacity
  }
  if('ambient' in params) {
    this.ambientLight  = params.ambient
  }
  if('diffuse' in params) {
    this.diffuseLight = params.diffuse
  }
  if('specular' in params) {
    this.specularLight = params.specular
  }
  if('roughness' in params) {
    this.roughness = params.roughness
  }
  if('fresnel' in params) {
    this.fresnel = params.fresnel
  }

  if(params.texture) {
    this.texture.dispose()
    this.texture = createTexture(gl, params.texture)
  } else if (params.colormap) {
    this.texture.shape = [256,256]
    this.texture.minFilter = gl.LINEAR_MIPMAP_LINEAR
    this.texture.magFilter = gl.LINEAR
    this.texture.setPixels(genColormap(params.colormap))
    this.texture.generateMipmap()
  }

  var cells = params.cells
  var positions = params.positions

  if(!positions || !cells) {
    return
  }

  var tPos = []
  var tCol = []
  var tNor = []
  var tUVs = []
  var tIds = []

  var ePos = []
  var eCol = []
  var eUVs = []
  var eIds = []

  var pPos = []
  var pCol = []
  var pUVs = []
  var pSiz = []
  var pIds = []

  //Save geometry data for picking calculations
  this.cells     = cells
  this.positions = positions

  //Compute normals
  var vertexNormals = params.vertexNormals
  var cellNormals   = params.cellNormals
  var vertexNormalsEpsilon = params.vertexNormalsEpsilon === void(0) ? DEFAULT_VERTEX_NORMALS_EPSILON : params.vertexNormalsEpsilon
  var faceNormalsEpsilon = params.faceNormalsEpsilon === void(0) ? DEFAULT_FACE_NORMALS_EPSILON : params.faceNormalsEpsilon
  if(params.useFacetNormals && !cellNormals) {
    cellNormals = normals.faceNormals(cells, positions, faceNormalsEpsilon)
  }
  if(!cellNormals && !vertexNormals) {
    vertexNormals = normals.vertexNormals(cells, positions, vertexNormalsEpsilon)
  }

  //Compute colors
  var vertexColors    = params.vertexColors
  var cellColors      = params.cellColors
  var meshColor       = params.meshColor || [1,1,1,1]

  //UVs
  var vertexUVs       = params.vertexUVs
  var vertexIntensity = params.vertexIntensity
  var cellUVs         = params.cellUVs
  var cellIntensity   = params.cellIntensity

  var intensityLo     = Infinity
  var intensityHi     = -Infinity
  if(!vertexUVs && !cellUVs) {
    if(vertexIntensity) {
      for(var i=0; i<vertexIntensity.length; ++i) {
        var f = vertexIntensity[i]
        intensityLo = Math.min(intensityLo, f)
        intensityHi = Math.max(intensityHi, f)
      }
    } else if(cellIntensity) {
      for(var i=0; i<cellIntensity.length; ++i) {
        var f = cellIntensity[i]
        intensityLo = Math.min(intensityLo, f)
        intensityHi = Math.max(intensityHi, f)
      }
    } else {
      for(var i=0; i<positions.length; ++i) {
        var f = positions[i][2]
        intensityLo = Math.min(intensityLo, f)
        intensityHi = Math.max(intensityHi, f)
      }
    }
  }

  if(vertexIntensity) {
    this.intensity = vertexIntensity
  } else if(cellIntensity) {
    this.intensity = unpackIntensity(cells, positions.length, cellIntensity)
  } else {
    this.intensity = takeZComponent(positions)
  }

  //Point size
  var pointSizes      = params.pointSizes
  var meshPointSize   = params.pointSize || 1.0

  //Update bounds
  this.bounds       = [[Infinity,Infinity,Infinity], [-Infinity,-Infinity,-Infinity]]
  for(var i=0; i<positions.length; ++i) {
    var p = positions[i]
    for(var j=0; j<3; ++j) {
      if(isNaN(p[j]) || !isFinite(p[j])) {
        continue
      }
      this.bounds[0][j] = Math.min(this.bounds[0][j], p[j])
      this.bounds[1][j] = Math.max(this.bounds[1][j], p[j])
    }
  }

  //Pack cells into buffers
  var triangleCount = 0
  var edgeCount = 0
  var pointCount = 0

fill_loop:
  for(var i=0; i<cells.length; ++i) {
    var cell = cells[i]
    switch(cell.length) {
      case 1:

        var v = cell[0]
        var p = positions[v]

        //Check NaNs
        for(var j=0; j<3; ++j) {
          if(isNaN(p[j]) || !isFinite(p[j])) {
            continue fill_loop
          }
        }

        pPos.push(p[0], p[1], p[2])

        var c
        if(vertexColors) {
          c = vertexColors[v]
        } else if(cellColors) {
          c = cellColors[i]
        } else {
          c = meshColor
        }
        if(c.length === 3) {
          pCol.push(c[0], c[1], c[2], 1)
        } else {
          pCol.push(c[0], c[1], c[2], c[3])
        }

        var uv
        if(vertexUVs) {
          uv = vertexUVs[v]
        } else if(vertexIntensity) {
          uv = [
            (vertexIntensity[v] - intensityLo) /
            (intensityHi - intensityLo), 0]
        } else if(cellUVs) {
          uv = cellUVs[i]
        } else if(cellIntensity) {
          uv = [
            (cellIntensity[i] - intensityLo) /
            (intensityHi - intensityLo), 0]
        } else {
          uv = [
            (p[2] - intensityLo) /
            (intensityHi - intensityLo), 0]
        }
        pUVs.push(uv[0], uv[1])

        if(pointSizes) {
          pSiz.push(pointSizes[v])
        } else {
          pSiz.push(meshPointSize)
        }

        pIds.push(i)

        pointCount += 1
      break

      case 2:

        //Check NaNs
        for(var j=0; j<2; ++j) {
          var v = cell[j]
          var p = positions[v]
          for(var k=0; k<3; ++k) {
            if(isNaN(p[k]) || !isFinite(p[k])) {
              continue fill_loop
            }
          }
        }

        for(var j=0; j<2; ++j) {
          var v = cell[j]
          var p = positions[v]

          ePos.push(p[0], p[1], p[2])

          var c
          if(vertexColors) {
            c = vertexColors[v]
          } else if(cellColors) {
            c = cellColors[i]
          } else {
            c = meshColor
          }
          if(c.length === 3) {
            eCol.push(c[0], c[1], c[2], 1)
          } else {
            eCol.push(c[0], c[1], c[2], c[3])
          }

          var uv
          if(vertexUVs) {
            uv = vertexUVs[v]
          } else if(vertexIntensity) {
            uv = [
              (vertexIntensity[v] - intensityLo) /
              (intensityHi - intensityLo), 0]
          } else if(cellUVs) {
            uv = cellUVs[i]
          } else if(cellIntensity) {
            uv = [
              (cellIntensity[i] - intensityLo) /
              (intensityHi - intensityLo), 0]
          } else {
            uv = [
              (p[2] - intensityLo) /
              (intensityHi - intensityLo), 0]
          }
          eUVs.push(uv[0], uv[1])

          eIds.push(i)
        }
        edgeCount += 1
      break

      case 3:
        //Check NaNs
        for(var j=0; j<3; ++j) {
          var v = cell[j]
          var p = positions[v]
          for(var k=0; k<3; ++k) {
            if(isNaN(p[k]) || !isFinite(p[k])) {
              continue fill_loop
            }
          }
        }

        for(var j=0; j<3; ++j) {
          var v = cell[j]

          var p = positions[v]
          tPos.push(p[0], p[1], p[2])

          var c
          if(vertexColors) {
            c = vertexColors[v]
          } else if(cellColors) {
            c = cellColors[i]
          } else {
            c = meshColor
          }
          if(c.length === 3) {
            tCol.push(c[0], c[1], c[2], 1)
          } else {
            tCol.push(c[0], c[1], c[2], c[3])
          }

          var uv
          if(vertexUVs) {
            uv = vertexUVs[v]
          } else if(vertexIntensity) {
            uv = [
              (vertexIntensity[v] - intensityLo) /
              (intensityHi - intensityLo), 0]
          } else if(cellUVs) {
            uv = cellUVs[i]
          } else if(cellIntensity) {
            uv = [
              (cellIntensity[i] - intensityLo) /
              (intensityHi - intensityLo), 0]
          } else {
            uv = [
              (p[2] - intensityLo) /
              (intensityHi - intensityLo), 0]
          }
          tUVs.push(uv[0], uv[1])

          var q
          if(vertexNormals) {
            q = vertexNormals[v]
          } else {
            q = cellNormals[i]
          }
          tNor.push(q[0], q[1], q[2])

          tIds.push(i)
        }
        triangleCount += 1
      break

      default:
      break
    }
  }

  this.pointCount     = pointCount
  this.edgeCount      = edgeCount
  this.triangleCount  = triangleCount

  this.pointPositions.update(pPos)
  this.pointColors.update(pCol)
  this.pointUVs.update(pUVs)
  this.pointSizes.update(pSiz)
  this.pointIds.update(new Uint32Array(pIds))

  this.edgePositions.update(ePos)
  this.edgeColors.update(eCol)
  this.edgeUVs.update(eUVs)
  this.edgeIds.update(new Uint32Array(eIds))

  this.trianglePositions.update(tPos)
  this.triangleColors.update(tCol)
  this.triangleUVs.update(tUVs)
  this.triangleNormals.update(tNor)
  this.triangleIds.update(new Uint32Array(tIds))
}

proto.drawTransparent = proto.draw = function(params) {
  params = params || {}
  var gl          = this.gl
  var model       = params.model      || identityMatrix
  var view        = params.view       || identityMatrix
  var projection  = params.projection || identityMatrix

  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
  for(var i=0; i<3; ++i) {
    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
  }

  var uniforms = {
    model:      model,
    view:       view,
    projection: projection,

    clipBounds: clipBounds,

    kambient:   this.ambientLight,
    kdiffuse:   this.diffuseLight,
    kspecular:  this.specularLight,
    roughness:  this.roughness,
    fresnel:    this.fresnel,

    eyePosition:   [0,0,0],
    lightPosition: [0,0,0],

    opacity:  this.opacity,

    contourColor: this.contourColor,

    texture:    0
  }

  this.texture.bind(0)

  var invCameraMatrix = new Array(16)
  multiply(invCameraMatrix, uniforms.view, uniforms.model)
  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
  invert(invCameraMatrix, invCameraMatrix)

  for(var i=0; i<3; ++i) {
    uniforms.eyePosition[i] = invCameraMatrix[12+i] / invCameraMatrix[15]
  }

  var w = invCameraMatrix[15]
  for(var i=0; i<3; ++i) {
    w += this.lightPosition[i] * invCameraMatrix[4*i+3]
  }
  for(var i=0; i<3; ++i) {
    var s = invCameraMatrix[12+i]
    for(var j=0; j<3; ++j) {
      s += invCameraMatrix[4*j+i] * this.lightPosition[j]
    }
    uniforms.lightPosition[i] = s / w
  }

  if(this.triangleCount > 0) {
    var shader = this.triShader
    shader.bind()
    shader.uniforms = uniforms

    this.triangleVAO.bind()
    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
    this.triangleVAO.unbind()
  }

  if(this.edgeCount > 0 && this.lineWidth > 0) {
    var shader = this.lineShader
    shader.bind()
    shader.uniforms = uniforms

    this.edgeVAO.bind()
    gl.lineWidth(this.lineWidth)
    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
    this.edgeVAO.unbind()
  }

  if(this.pointCount > 0) {
    var shader = this.pointShader
    shader.bind()
    shader.uniforms = uniforms

    this.pointVAO.bind()
    gl.drawArrays(gl.POINTS, 0, this.pointCount)
    this.pointVAO.unbind()
  }

  if(this.contourEnable && this.contourCount > 0 && this.contourLineWidth > 0) {
    var shader = this.contourShader
    shader.bind()
    shader.uniforms = uniforms

    this.contourVAO.bind()
    gl.drawArrays(gl.LINES, 0, this.contourCount)
    this.contourVAO.unbind()
  }
}

proto.drawPick = function(params) {
  params = params || {}

  var gl         = this.gl

  var model      = params.model      || identityMatrix
  var view       = params.view       || identityMatrix
  var projection = params.projection || identityMatrix

  var clipBounds = [[-1e6,-1e6,-1e6],[1e6,1e6,1e6]]
  for(var i=0; i<3; ++i) {
    clipBounds[0][i] = Math.max(clipBounds[0][i], this.clipBounds[0][i])
    clipBounds[1][i] = Math.min(clipBounds[1][i], this.clipBounds[1][i])
  }

  //Save camera parameters
  this._model      = [].slice.call(model)
  this._view       = [].slice.call(view)
  this._projection = [].slice.call(projection)
  this._resolution = [gl.drawingBufferWidth, gl.drawingBufferHeight]

  var uniforms = {
    model:      model,
    view:       view,
    projection: projection,
    clipBounds: clipBounds,
    pickId:     this.pickId / 255.0,
  }

  var shader = this.pickShader
  shader.bind()
  shader.uniforms = uniforms

  if(this.triangleCount > 0) {
    this.triangleVAO.bind()
    gl.drawArrays(gl.TRIANGLES, 0, this.triangleCount*3)
    this.triangleVAO.unbind()
  }

  if(this.edgeCount > 0) {
    this.edgeVAO.bind()
    gl.lineWidth(this.lineWidth)
    gl.drawArrays(gl.LINES, 0, this.edgeCount*2)
    this.edgeVAO.unbind()
  }

  if(this.pointCount > 0) {
    var shader = this.pointPickShader
    shader.bind()
    shader.uniforms = uniforms

    this.pointVAO.bind()
    gl.drawArrays(gl.POINTS, 0, this.pointCount)
    this.pointVAO.unbind()
  }
}


proto.pick = function(pickData) {
  if(!pickData) {
    return null
  }
  if(pickData.id !== this.pickId) {
    return null
  }

  var cellId    = pickData.value[0] + 256*pickData.value[1] + 65536*pickData.value[2]
  var cell      = this.cells[cellId]
  var positions = this.positions

  var simplex   = new Array(cell.length)
  for(var i=0; i<cell.length; ++i) {
    simplex[i] = positions[cell[i]]
  }

  var data = closestPoint(
    simplex,
    [pickData.coord[0], this._resolution[1]-pickData.coord[1]],
    this._model,
    this._view,
    this._projection,
    this._resolution)

  if(!data) {
    return null
  }

  var weights = data[2]
  var interpIntensity = 0.0
  for(var i=0; i<cell.length; ++i) {
    interpIntensity += weights[i] * this.intensity[cell[i]]
  }

  return {
    position: data[1],
    index:    cell[data[0]],
    cell:     cell,
    cellId:   cellId,
    intensity:  interpIntensity,
    dataCoordinate: this.positions[cell[data[0]]]
  }
}


proto.dispose = function() {
  this.texture.dispose()

  this.triShader.dispose()
  this.lineShader.dispose()
  this.pointShader.dispose()
  this.pickShader.dispose()
  this.pointPickShader.dispose()

  this.triangleVAO.dispose()
  this.trianglePositions.dispose()
  this.triangleColors.dispose()
  this.triangleUVs.dispose()
  this.triangleNormals.dispose()
  this.triangleIds.dispose()

  this.edgeVAO.dispose()
  this.edgePositions.dispose()
  this.edgeColors.dispose()
  this.edgeUVs.dispose()
  this.edgeIds.dispose()

  this.pointVAO.dispose()
  this.pointPositions.dispose()
  this.pointColors.dispose()
  this.pointUVs.dispose()
  this.pointSizes.dispose()
  this.pointIds.dispose()

  this.contourVAO.dispose()
  this.contourPositions.dispose()
  this.contourShader.dispose()
}

function createMeshShader(gl) {
  var shader = createShader(gl, meshShader)
  shader.attributes.position.location = 0
  shader.attributes.color.location    = 2
  shader.attributes.uv.location       = 3
  shader.attributes.normal.location   = 4
  return shader
}

function createWireShader(gl) {
  var shader = createShader(gl, wireShader)
  shader.attributes.position.location = 0
  shader.attributes.color.location    = 2
  shader.attributes.uv.location       = 3
  return shader
}

function createPointShader(gl) {
  var shader = createShader(gl, pointShader)
  shader.attributes.position.location  = 0
  shader.attributes.color.location     = 2
  shader.attributes.uv.location        = 3
  shader.attributes.pointSize.location = 4
  return shader
}

function createPickShader(gl) {
  var shader = createShader(gl, pickShader)
  shader.attributes.position.location = 0
  shader.attributes.id.location       = 1
  return shader
}

function createPointPickShader(gl) {
  var shader = createShader(gl, pointPickShader)
  shader.attributes.position.location  = 0
  shader.attributes.id.location        = 1
  shader.attributes.pointSize.location = 4
  return shader
}

function createContourShader(gl) {
  var shader = createShader(gl, contourShader)
  shader.attributes.position.location = 0
  return shader
}

function createSimplicialMesh(params) {
  var gl = params.gl

  var triShader       = createMeshShader(gl)
  var lineShader      = createWireShader(gl)
  var pointShader     = createPointShader(gl)
  var pickShader      = createPickShader(gl)
  var pointPickShader = createPointPickShader(gl)
  var contourShader   = createContourShader(gl)

  var meshTexture       = createTexture(gl,
    ndarray(new Uint8Array([255,255,255,255]), [1,1,4]))
  meshTexture.generateMipmap()
  meshTexture.minFilter = gl.LINEAR_MIPMAP_LINEAR
  meshTexture.magFilter = gl.LINEAR

  var trianglePositions = createBuffer(gl)
  var triangleColors    = createBuffer(gl)
  var triangleUVs       = createBuffer(gl)
  var triangleNormals   = createBuffer(gl)
  var triangleIds       = createBuffer(gl)
  var triangleVAO       = createVAO(gl, [
    { buffer: trianglePositions,
      type: gl.FLOAT,
      size: 3
    },
    { buffer: triangleIds,
      type: gl.UNSIGNED_BYTE,
      size: 4,
      normalized: true
    },
    { buffer: triangleColors,
      type: gl.FLOAT,
      size: 4
    },
    { buffer: triangleUVs,
      type: gl.FLOAT,
      size: 2
    },
    { buffer: triangleNormals,
      type: gl.FLOAT,
      size: 3
    }
  ])

  var edgePositions = createBuffer(gl)
  var edgeColors    = createBuffer(gl)
  var edgeUVs       = createBuffer(gl)
  var edgeIds       = createBuffer(gl)
  var edgeVAO       = createVAO(gl, [
    { buffer: edgePositions,
      type: gl.FLOAT,
      size: 3
    },
    { buffer: edgeIds,
      type: gl.UNSIGNED_BYTE,
      size: 4,
      normalized: true
    },
    { buffer: edgeColors,
      type: gl.FLOAT,
      size: 4
    },
    { buffer: edgeUVs,
      type: gl.FLOAT,
      size: 2
    }
  ])

  var pointPositions  = createBuffer(gl)
  var pointColors     = createBuffer(gl)
  var pointUVs        = createBuffer(gl)
  var pointSizes      = createBuffer(gl)
  var pointIds        = createBuffer(gl)
  var pointVAO        = createVAO(gl, [
    { buffer: pointPositions,
      type: gl.FLOAT,
      size: 3
    },
    { buffer: pointIds,
      type: gl.UNSIGNED_BYTE,
      size: 4,
      normalized: true
    },
    { buffer: pointColors,
      type: gl.FLOAT,
      size: 4
    },
    { buffer: pointUVs,
      type: gl.FLOAT,
      size: 2
    },
    { buffer: pointSizes,
      type: gl.FLOAT,
      size: 1
    }
  ])

  var contourPositions = createBuffer(gl)
  var contourVAO       = createVAO(gl, [
    { buffer: contourPositions,
      type:   gl.FLOAT,
      size:   3
    }])

  var mesh = new SimplicialMesh(gl
    , meshTexture
    , triShader
    , lineShader
    , pointShader
    , pickShader
    , pointPickShader
    , contourShader
    , trianglePositions
    , triangleIds
    , triangleColors
    , triangleUVs
    , triangleNormals
    , triangleVAO
    , edgePositions
    , edgeIds
    , edgeColors
    , edgeUVs
    , edgeVAO
    , pointPositions
    , pointIds
    , pointColors
    , pointUVs
    , pointSizes
    , pointVAO
    , contourPositions
    , contourVAO)

  mesh.update(params)

  return mesh
}

module.exports = createSimplicialMesh

},{"./lib/closest-point":178,"./lib/shaders":179,"colormap":62,"gl-buffer":132,"gl-mat4/invert":156,"gl-mat4/multiply":158,"gl-shader":227,"gl-texture2d":239,"gl-vao":243,"ndarray":443,"normals":445,"simplicial-complex-contour":967,"typedarray-pool":992}],181:[function(require,module,exports){
'use strict'

module.exports = createBoxes

var createBuffer = require('gl-buffer')
var createShader = require('gl-shader')

var shaders = require('./shaders')

function Boxes(plot, vbo, shader) {
  this.plot   = plot
  this.vbo    = vbo
  this.shader = shader
}

var proto = Boxes.prototype

proto.bind = function() {
  var shader = this.shader
  this.vbo.bind()
  this.shader.bind()
  shader.attributes.coord.pointer()
  shader.uniforms.screenBox = this.plot.screenBox
}

proto.drawBox = (function() {
  var lo = [0,0]
  var hi = [0,0]
  return function(loX, loY, hiX, hiY, color) {
    var plot       = this.plot
    var shader     = this.shader
    var gl         = plot.gl

    lo[0] = loX
    lo[1] = loY
    hi[0] = hiX
    hi[1] = hiY

    shader.uniforms.lo     = lo
    shader.uniforms.hi     = hi
    shader.uniforms.color  = color

    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
  }
}())

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
}

function createBoxes(plot) {
  var gl  = plot.gl
  var vbo = createBuffer(gl, [
    0,0,
    0,1,
    1,0,
    1,1])
  var shader  = createShader(gl, shaders.boxVert, shaders.lineFrag)
  return new Boxes(plot, vbo, shader)
}

},{"./shaders":184,"gl-buffer":132,"gl-shader":187}],182:[function(require,module,exports){
'use strict'

module.exports = createGrid

var createBuffer  = require('gl-buffer')
var createShader  = require('gl-shader')
var bsearch       = require('binary-search-bounds')
var shaders       = require('./shaders')

function Grid(plot, vbo, shader, tickShader) {
  this.plot   = plot
  this.vbo    = vbo
  this.shader = shader
  this.tickShader = tickShader
  this.ticks  = [[], []]
}

function compareTickNum(a, b) {
  return a - b
}

var proto = Grid.prototype

proto.draw = (function() {

  var DATA_SHIFT = [0,0]
  var DATA_SCALE = [0,0]
  var DATA_AXIS  = [0,0]

  return function() {
    var plot       = this.plot
    var vbo        = this.vbo
    var shader     = this.shader
    var ticks      = this.ticks
    var gl         = plot.gl
    var bounds     = plot._tickBounds
    var dataBox    = plot.dataBox
    var viewPixels = plot.viewBox
    var lineWidth  = plot.gridLineWidth
    var gridColor  = plot.gridLineColor
    var gridEnable = plot.gridLineEnable
    var pixelRatio = plot.pixelRatio

    for(var i=0; i<2; ++i) {
      var lo = bounds[i]
      var hi = bounds[i+2]
      var boundScale = hi - lo
      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
      var dataWidth   = dataBox[i+2] - dataBox[i]
      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
    }

    shader.bind()
    vbo.bind()
    shader.attributes.dataCoord.pointer()
    shader.uniforms.dataShift = DATA_SHIFT
    shader.uniforms.dataScale = DATA_SCALE

    var offset = 0
    for(var i=0; i<2; ++i) {
      DATA_AXIS[0] = DATA_AXIS[1] = 0
      DATA_AXIS[i] = 1
      shader.uniforms.dataAxis  = DATA_AXIS
      shader.uniforms.lineWidth = lineWidth[i] / (viewPixels[i+2] - viewPixels[i]) * pixelRatio
      shader.uniforms.color     = gridColor[i]

      var size = ticks[i].length * 6
      if(gridEnable[i] && size) {
        gl.drawArrays(gl.TRIANGLES, offset, size)
      }
      offset += size
    }
  }
})()

proto.drawTickMarks = (function() {
  var DATA_SHIFT = [0,0]
  var DATA_SCALE = [0,0]
  var X_AXIS     = [1,0]
  var Y_AXIS     = [0,1]
  var SCR_OFFSET = [0,0]
  var TICK_SCALE = [0,0]

  return function() {
    var plot       = this.plot
    var vbo        = this.vbo
    var shader     = this.tickShader
    var ticks      = this.ticks
    var gl         = plot.gl
    var bounds     = plot._tickBounds
    var dataBox    = plot.dataBox
    var viewBox    = plot.viewBox
    var pixelRatio = plot.pixelRatio
    var screenBox  = plot.screenBox

    var screenWidth  = screenBox[2] - screenBox[0]
    var screenHeight = screenBox[3] - screenBox[1]
    var viewWidth    = viewBox[2]   - viewBox[0]
    var viewHeight   = viewBox[3]   - viewBox[1]

    for(var i=0; i<2; ++i) {
      var lo = bounds[i]
      var hi = bounds[i+2]
      var boundScale = hi - lo
      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
      var dataWidth   = (dataBox[i+2] - dataBox[i])
      DATA_SCALE[i] = 2.0 * boundScale / dataWidth
      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth
    }

    DATA_SCALE[0] *= viewWidth / screenWidth
    DATA_SHIFT[0] *= viewWidth / screenWidth

    DATA_SCALE[1] *= viewHeight / screenHeight
    DATA_SHIFT[1] *= viewHeight / screenHeight

    shader.bind()
    vbo.bind()

    shader.attributes.dataCoord.pointer()

    var uniforms = shader.uniforms
    uniforms.dataShift = DATA_SHIFT
    uniforms.dataScale = DATA_SCALE

    var tickMarkLength = plot.tickMarkLength
    var tickMarkWidth  = plot.tickMarkWidth
    var tickMarkColor  = plot.tickMarkColor

    var xTicksOffset = 0
    var yTicksOffset = ticks[0].length * 6

    var xStart = Math.min(bsearch.ge(ticks[0], (dataBox[0] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
    var xEnd   = Math.min(bsearch.gt(ticks[0], (dataBox[2] - bounds[0]) / (bounds[2] - bounds[0]), compareTickNum), ticks[0].length)
    var xOffset = xTicksOffset + 6 * xStart
    var xCount  = 6 * Math.max(0, xEnd - xStart)

    var yStart = Math.min(bsearch.ge(ticks[1], (dataBox[1] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
    var yEnd   = Math.min(bsearch.gt(ticks[1], (dataBox[3] - bounds[1]) / (bounds[3] - bounds[1]), compareTickNum), ticks[1].length)
    var yOffset = yTicksOffset + 6 * yStart
    var yCount  = 6 * Math.max(0, yEnd - yStart)

    SCR_OFFSET[0]         = 2.0 * (viewBox[0] - tickMarkLength[1]) / screenWidth - 1.0
    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkLength[1] * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkWidth[1]  * pixelRatio / screenHeight

    if(yCount) {
      uniforms.color        = tickMarkColor[1]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = Y_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
    }

    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
    SCR_OFFSET[1]         = 2.0 * (viewBox[1] - tickMarkLength[0]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkWidth[0]  * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkLength[0] * pixelRatio / screenHeight

    if(xCount) {
      uniforms.color        = tickMarkColor[0]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = X_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
    }

    SCR_OFFSET[0]         = 2.0 * (viewBox[2] + tickMarkLength[3]) / screenWidth - 1.0
    SCR_OFFSET[1]         = (viewBox[3] + viewBox[1]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkLength[3] * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkWidth[3]  * pixelRatio / screenHeight

    if(yCount) {
      uniforms.color        = tickMarkColor[3]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = Y_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, yOffset, yCount)
    }

    SCR_OFFSET[0]         = (viewBox[2] + viewBox[0]) / screenWidth - 1.0
    SCR_OFFSET[1]         = 2.0 * (viewBox[3] + tickMarkLength[2]) / screenHeight - 1.0
    TICK_SCALE[0]         = tickMarkWidth[2]  * pixelRatio / screenWidth
    TICK_SCALE[1]         = tickMarkLength[2] * pixelRatio / screenHeight

    if(xCount) {
      uniforms.color        = tickMarkColor[2]
      uniforms.tickScale    = TICK_SCALE
      uniforms.dataAxis     = X_AXIS
      uniforms.screenOffset = SCR_OFFSET
      gl.drawArrays(gl.TRIANGLES, xOffset, xCount)
    }
  }
})()

proto.update = (function() {
  var OFFSET_X = [1,  1, -1, -1,  1, -1]
  var OFFSET_Y = [1, -1,  1,  1, -1, -1]

  return function(options) {
    var ticks  = options.ticks
    var bounds = options.bounds
    var data   = new Float32Array(6 * 3 * (ticks[0].length + ticks[1].length))

    var zeroLineEnable = this.plot.zeroLineEnable

    var ptr    = 0
    var gridTicks = [[], []]
    for(var dim=0; dim<2; ++dim) {
      var localTicks = gridTicks[dim]
      var axisTicks = ticks[dim]
      var lo = bounds[dim]
      var hi = bounds[dim+2]
      for(var i=0; i<axisTicks.length; ++i) {
        var x = (axisTicks[i].x - lo) / (hi - lo)
        localTicks.push(x)
        for(var j=0; j<6; ++j) {
          data[ptr++] = x
          data[ptr++] = OFFSET_X[j]
          data[ptr++] = OFFSET_Y[j]
        }
      }
    }

    this.ticks = gridTicks
    this.vbo.update(data)
  }
})()

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
  this.tickShader.dispose()
}

function createGrid(plot) {
  var gl     = plot.gl
  var vbo    = createBuffer(gl)
  var shader = createShader(gl, shaders.gridVert, shaders.gridFrag)
  var tickShader = createShader(gl, shaders.tickVert, shaders.gridFrag)
  var grid   = new Grid(plot, vbo, shader, tickShader)
  return grid
}

},{"./shaders":184,"binary-search-bounds":186,"gl-buffer":132,"gl-shader":187}],183:[function(require,module,exports){
'use strict'

module.exports = createLines

var createBuffer = require('gl-buffer')
var createShader = require('gl-shader')

var shaders = require('./shaders')

function Lines(plot, vbo, shader) {
  this.plot   = plot
  this.vbo    = vbo
  this.shader = shader
}

var proto = Lines.prototype

proto.bind = function() {
  var shader = this.shader
  this.vbo.bind()
  this.shader.bind()
  shader.attributes.coord.pointer()
  shader.uniforms.screenBox = this.plot.screenBox
}

proto.drawLine = (function() {
  var start = [0,0]
  var end   = [0,0]
  return function(startX, startY, endX, endY, width, color) {
    var plot       = this.plot
    var shader     = this.shader
    var gl         = plot.gl

    start[0] = startX
    start[1] = startY
    end[0]   = endX
    end[1]   = endY

    shader.uniforms.start  = start
    shader.uniforms.end    = end
    shader.uniforms.width  = width * plot.pixelRatio
    shader.uniforms.color  = color

    gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4)
  }
}())

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
}

function createLines(plot) {
  var gl  = plot.gl
  var vbo = createBuffer(gl, [
    -1,-1,
    -1,1,
    1,-1,
    1,1])
  var shader  = createShader(gl, shaders.lineVert, shaders.lineFrag)
  var lines   = new Lines(plot, vbo, shader)
  return lines
}

},{"./shaders":184,"gl-buffer":132,"gl-shader":187}],184:[function(require,module,exports){
'use strict'



var FRAGMENT = "precision lowp float;\n#define GLSLIFY 1\nuniform vec4 color;\nvoid main() {\n  gl_FragColor = vec4(color.xyz * color.w, color.w);\n}\n"

module.exports = {
  lineVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 start, end;\nuniform float width;\n\nvec2 perp(vec2 v) {\n  return vec2(v.y, -v.x);\n}\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  vec2 delta = normalize(perp(start - end));\n  vec2 offset = mix(start, end, 0.5 * (coord.y+1.0));\n  gl_Position = vec4(screen(offset + 0.5 * width * delta * coord.x), 0, 1);\n}\n",
  lineFrag: FRAGMENT,
  textVert: "#define GLSLIFY 1\nattribute vec3 textCoordinate;\n\nuniform vec2 dataScale, dataShift, dataAxis, screenOffset, textScale;\nuniform float angle;\n\nvoid main() {\n  float dataOffset  = textCoordinate.z;\n  vec2 glyphOffset  = textCoordinate.xy;\n  mat2 glyphMatrix = mat2(cos(angle), sin(angle), -sin(angle), cos(angle));\n  vec2 screenCoordinate = dataAxis * (dataScale * dataOffset + dataShift) +\n    glyphMatrix * glyphOffset * textScale + screenOffset;\n  gl_Position = vec4(screenCoordinate, 0, 1);\n}\n",
  textFrag: FRAGMENT,
  gridVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale;\nuniform float lineWidth;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  pos += 10.0 * dataCoord.y * vec2(dataAxis.y, -dataAxis.x) + dataCoord.z * lineWidth;\n  gl_Position = vec4(pos, 0, 1);\n}\n",
  gridFrag: FRAGMENT,
  boxVert:  "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 coord;\n\nuniform vec4 screenBox;\nuniform vec2 lo, hi;\n\nvec2 screen(vec2 v) {\n  return 2.0 * (v - screenBox.xy) / (screenBox.zw - screenBox.xy) - 1.0;\n}\n\nvoid main() {\n  gl_Position = vec4(screen(mix(lo, hi, coord)), 0, 1);\n}\n",
  tickVert: "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 dataCoord;\n\nuniform vec2 dataAxis, dataShift, dataScale, screenOffset, tickScale;\n\nvoid main() {\n  vec2 pos = dataAxis * (dataScale * dataCoord.x + dataShift);\n  gl_Position = vec4(pos + tickScale*dataCoord.yz + screenOffset, 0, 1);\n}\n"
}

},{}],185:[function(require,module,exports){
'use strict'

module.exports = createTextElements

var createBuffer = require('gl-buffer')
var createShader = require('gl-shader')
var getText      = require('text-cache')
var bsearch      = require('binary-search-bounds')
var shaders      = require('./shaders')

function TextElements(plot, vbo, shader) {
  this.plot         = plot
  this.vbo          = vbo
  this.shader       = shader
  this.tickOffset   = [[],[]]
  this.tickX        = [[],[]]
  this.labelOffset  = [0,0]
  this.labelCount   = [0,0]
}

var proto = TextElements.prototype

proto.drawTicks = (function() {
  var DATA_AXIS = [0,0]
  var SCREEN_OFFSET = [0,0]
  var ZERO_2 = [0,0]

  return function(axis) {
    var plot        = this.plot
    var shader      = this.shader
    var tickX       = this.tickX[axis]
    var tickOffset  = this.tickOffset[axis]
    var gl          = plot.gl
    var viewBox     = plot.viewBox
    var dataBox     = plot.dataBox
    var screenBox   = plot.screenBox
    var pixelRatio  = plot.pixelRatio
    var tickEnable  = plot.tickEnable
    var tickPad     = plot.tickPad
    var textColor   = plot.tickColor
    var textAngle   = plot.tickAngle
    // todo check if this should be used (now unused)
    // var tickLength  = plot.tickMarkLength

    var labelEnable = plot.labelEnable
    var labelPad    = plot.labelPad
    var labelColor  = plot.labelColor
    var labelAngle  = plot.labelAngle
    var labelOffset = this.labelOffset[axis]
    var labelCount  = this.labelCount[axis]

    var start = bsearch.lt(tickX, dataBox[axis])
    var end   = bsearch.le(tickX, dataBox[axis+2])

    DATA_AXIS[0]    = DATA_AXIS[1] = 0
    DATA_AXIS[axis] = 1

    SCREEN_OFFSET[axis] = (viewBox[2+axis] + viewBox[axis]) / (screenBox[2+axis] - screenBox[axis]) - 1.0

    var screenScale = 2.0 / screenBox[2+(axis^1)] - screenBox[axis^1]

    SCREEN_OFFSET[axis^1] = screenScale * viewBox[axis^1] - 1.0
    if(tickEnable[axis]) {
      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * tickPad[axis]
      if(start < end && tickOffset[end] > tickOffset[start]) {
        shader.uniforms.dataAxis     = DATA_AXIS
        shader.uniforms.screenOffset = SCREEN_OFFSET
        shader.uniforms.color        = textColor[axis]
        shader.uniforms.angle        = textAngle[axis]
        gl.drawArrays(
          gl.TRIANGLES,
          tickOffset[start],
          tickOffset[end] - tickOffset[start])
      }
    }
    if(labelEnable[axis] && labelCount) {
      SCREEN_OFFSET[axis^1] -= screenScale * pixelRatio * labelPad[axis]
      shader.uniforms.dataAxis     = ZERO_2
      shader.uniforms.screenOffset = SCREEN_OFFSET
      shader.uniforms.color        = labelColor[axis]
      shader.uniforms.angle        = labelAngle[axis]
      gl.drawArrays(
        gl.TRIANGLES,
        labelOffset,
        labelCount)
    }

    SCREEN_OFFSET[axis^1] = screenScale * viewBox[2+(axis^1)] - 1.0
    if(tickEnable[axis+2]) {
      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * tickPad[axis+2]
      if(start < end && tickOffset[end] > tickOffset[start]) {
        shader.uniforms.dataAxis     = DATA_AXIS
        shader.uniforms.screenOffset = SCREEN_OFFSET
        shader.uniforms.color        = textColor[axis+2]
        shader.uniforms.angle        = textAngle[axis+2]
        gl.drawArrays(
          gl.TRIANGLES,
          tickOffset[start],
          tickOffset[end] - tickOffset[start])
      }
    }
    if(labelEnable[axis+2] && labelCount) {
      SCREEN_OFFSET[axis^1] += screenScale * pixelRatio * labelPad[axis+2]
      shader.uniforms.dataAxis     = ZERO_2
      shader.uniforms.screenOffset = SCREEN_OFFSET
      shader.uniforms.color        = labelColor[axis+2]
      shader.uniforms.angle        = labelAngle[axis+2]
      gl.drawArrays(
        gl.TRIANGLES,
        labelOffset,
        labelCount)
    }

  }
})()

proto.drawTitle = (function() {
  var DATA_AXIS = [0,0]
  var SCREEN_OFFSET = [0,0]

  return function() {
    var plot        = this.plot
    var shader      = this.shader
    var gl          = plot.gl
    var screenBox   = plot.screenBox
    var titleCenter = plot.titleCenter
    var titleAngle  = plot.titleAngle
    var titleColor  = plot.titleColor
    var pixelRatio  = plot.pixelRatio

    if(!this.titleCount) {
      return
    }

    for(var i=0; i<2; ++i) {
      SCREEN_OFFSET[i] = 2.0 * (titleCenter[i]*pixelRatio - screenBox[i]) /
        (screenBox[2+i] - screenBox[i]) - 1
    }

    shader.bind()
    shader.uniforms.dataAxis      = DATA_AXIS
    shader.uniforms.screenOffset  = SCREEN_OFFSET
    shader.uniforms.angle         = titleAngle
    shader.uniforms.color         = titleColor

    gl.drawArrays(gl.TRIANGLES, this.titleOffset, this.titleCount)
  }
})()

proto.bind = (function() {
  var DATA_SHIFT = [0,0]
  var DATA_SCALE = [0,0]
  var TEXT_SCALE = [0,0]

  return function() {
    var plot      = this.plot
    var shader    = this.shader
    var bounds    = plot._tickBounds
    var dataBox   = plot.dataBox
    var screenBox = plot.screenBox
    var viewBox   = plot.viewBox

    shader.bind()

    //Set up coordinate scaling uniforms
    for(var i=0; i<2; ++i) {

      var lo = bounds[i]
      var hi = bounds[i+2]
      var boundScale = hi - lo
      var dataCenter  = 0.5 * (dataBox[i+2] + dataBox[i])
      var dataWidth   = (dataBox[i+2] - dataBox[i])

      var viewLo = viewBox[i]
      var viewHi = viewBox[i+2]
      var viewScale = viewHi - viewLo
      var screenLo = screenBox[i]
      var screenHi = screenBox[i+2]
      var screenScale = screenHi - screenLo

      DATA_SCALE[i] = 2.0 * boundScale / dataWidth * viewScale / screenScale
      DATA_SHIFT[i] = 2.0 * (lo - dataCenter) / dataWidth * viewScale / screenScale
    }

    TEXT_SCALE[1] = 2.0 * plot.pixelRatio / (screenBox[3] - screenBox[1])
    TEXT_SCALE[0] = TEXT_SCALE[1] * (screenBox[3] - screenBox[1]) / (screenBox[2] - screenBox[0])

    shader.uniforms.dataScale = DATA_SCALE
    shader.uniforms.dataShift = DATA_SHIFT
    shader.uniforms.textScale = TEXT_SCALE

    //Set attributes
    this.vbo.bind()
    shader.attributes.textCoordinate.pointer()
  }
})()

proto.update = function(options) {
  var vertices  = []
  var axesTicks = options.ticks
  var bounds    = options.bounds
  var i, j, k, data, scale, dimension

  for(dimension=0; dimension<2; ++dimension) {
    var offsets = [Math.floor(vertices.length/3)], tickX = [-Infinity]

    //Copy vertices over to buffer
    var ticks = axesTicks[dimension]
    for(i=0; i<ticks.length; ++i) {
      var tick  = ticks[i]
      var x     = tick.x
      var text  = tick.text
      var font  = tick.font || 'sans-serif'
      scale = (tick.fontSize || 12)

      var coordScale = 1.0 / (bounds[dimension+2] - bounds[dimension])
      var coordShift = bounds[dimension]

      var rows = text.split('\n')
      for(var r = 0; r < rows.length; r++) {
        data = getText(font, rows[r]).data
        for (j = 0; j < data.length; j += 2) {
          vertices.push(
              data[j] * scale,
              -data[j + 1] * scale - r * scale * 1.2,
              (x - coordShift) * coordScale)
        }
      }

      offsets.push(Math.floor(vertices.length/3))
      tickX.push(x)
    }

    this.tickOffset[dimension] = offsets
    this.tickX[dimension] = tickX
  }

  //Add labels
  for(dimension=0; dimension<2; ++dimension) {
    this.labelOffset[dimension] = Math.floor(vertices.length/3)

    data  = getText(options.labelFont[dimension], options.labels[dimension], { textAlign: 'center' }).data
    scale = options.labelSize[dimension]
    for(i=0; i<data.length; i+=2) {
      vertices.push(data[i]*scale, -data[i+1]*scale, 0)
    }

    this.labelCount[dimension] =
      Math.floor(vertices.length/3) - this.labelOffset[dimension]
  }

  //Add title
  this.titleOffset = Math.floor(vertices.length/3)
  data = getText(options.titleFont, options.title).data
  scale = options.titleSize
  for(i=0; i<data.length; i+=2) {
    vertices.push(data[i]*scale, -data[i+1]*scale, 0)
  }
  this.titleCount = Math.floor(vertices.length/3) - this.titleOffset

  //Upload new vertices
  this.vbo.update(vertices)
}

proto.dispose = function() {
  this.vbo.dispose()
  this.shader.dispose()
}

function createTextElements(plot) {
  var gl = plot.gl
  var vbo = createBuffer(gl)
  var shader = createShader(gl, shaders.textVert, shaders.textFrag)
  var text = new TextElements(plot, vbo, shader)
  return text
}

},{"./shaders":184,"binary-search-bounds":186,"gl-buffer":132,"gl-shader":187,"text-cache":983}],186:[function(require,module,exports){
arguments[4][54][0].apply(exports,arguments)
},{"dup":54}],187:[function(require,module,exports){
'use strict'

var createUniformWrapper   = require('./lib/create-uniforms')
var createAttributeWrapper = require('./lib/create-attributes')
var makeReflect            = require('./lib/reflect')
var shaderCache            = require('./lib/shader-cache')
var runtime                = require('./lib/runtime-reflect')
var GLError                = require("./lib/GLError")

//Shader object
function Shader(gl) {
  this.gl         = gl
  this.gl.lastAttribCount = 0  // fixme where else should we store info, safe but not nice on the gl object

  //Default initialize these to null
  this._vref      =
  this._fref      =
  this._relink    =
  this.vertShader =
  this.fragShader =
  this.program    =
  this.attributes =
  this.uniforms   =
  this.types      = null
}

var proto = Shader.prototype

proto.bind = function() {
  if(!this.program) {
    this._relink()
  }

  // ensuring that we have the right number of enabled vertex attributes
  var i
  var newAttribCount = this.gl.getProgramParameter(this.program, this.gl.ACTIVE_ATTRIBUTES) // more robust approach
  //var newAttribCount = Object.keys(this.attributes).length // avoids the probably immaterial introspection slowdown
  var oldAttribCount = this.gl.lastAttribCount
  if(newAttribCount > oldAttribCount) {
    for(i = oldAttribCount; i < newAttribCount; i++) {
      this.gl.enableVertexAttribArray(i)
    }
  } else if(oldAttribCount > newAttribCount) {
    for(i = newAttribCount; i < oldAttribCount; i++) {
      this.gl.disableVertexAttribArray(i)
    }
  }

  this.gl.lastAttribCount = newAttribCount

  this.gl.useProgram(this.program)
}

proto.dispose = function() {

  // disabling vertex attributes so new shader starts with zero
  // and it's also useful if all shaders are disposed but the
  // gl context is reused for subsequent replotting
  var oldAttribCount = this.gl.lastAttribCount
  for (var i = 0; i < oldAttribCount; i++) {
    this.gl.disableVertexAttribArray(i)
  }
  this.gl.lastAttribCount = 0

  if(this._fref) {
    this._fref.dispose()
  }
  if(this._vref) {
    this._vref.dispose()
  }
  this.attributes =
  this.types      =
  this.vertShader =
  this.fragShader =
  this.program    =
  this._relink    =
  this._fref      =
  this._vref      = null
}

function compareAttributes(a, b) {
  if(a.name < b.name) {
    return -1
  }
  return 1
}

//Update export hook for glslify-live
proto.update = function(
    vertSource
  , fragSource
  , uniforms
  , attributes) {

  //If only one object passed, assume glslify style output
  if(!fragSource || arguments.length === 1) {
    var obj = vertSource
    vertSource = obj.vertex
    fragSource = obj.fragment
    uniforms   = obj.uniforms
    attributes = obj.attributes
  }

  var wrapper = this
  var gl      = wrapper.gl

  //Compile vertex and fragment shaders
  var pvref = wrapper._vref
  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
  if(pvref) {
    pvref.dispose()
  }
  wrapper.vertShader = wrapper._vref.shader
  var pfref = this._fref
  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
  if(pfref) {
    pfref.dispose()
  }
  wrapper.fragShader = wrapper._fref.shader

  //If uniforms/attributes is not specified, use RT reflection
  if(!uniforms || !attributes) {

    //Create initial test program
    var testProgram = gl.createProgram()
    gl.attachShader(testProgram, wrapper.fragShader)
    gl.attachShader(testProgram, wrapper.vertShader)
    gl.linkProgram(testProgram)
    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
      var errLog = gl.getProgramInfoLog(testProgram)
      throw new GLError(errLog, 'Error linking program:' + errLog)
    }

    //Load data from runtime
    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
    attributes = attributes || runtime.attributes(gl, testProgram)

    //Release test program
    gl.deleteProgram(testProgram)
  }

  //Sort attributes lexicographically
  // overrides undefined WebGL behavior for attribute locations
  attributes = attributes.slice()
  attributes.sort(compareAttributes)

  //Convert attribute types, read out locations
  var attributeUnpacked  = []
  var attributeNames     = []
  var attributeLocations = []
  var i
  for(i=0; i<attributes.length; ++i) {
    var attr = attributes[i]
    if(attr.type.indexOf('mat') >= 0) {
      var size = attr.type.charAt(attr.type.length-1)|0
      var locVector = new Array(size)
      for(var j=0; j<size; ++j) {
        locVector[j] = attributeLocations.length
        attributeNames.push(attr.name + '[' + j + ']')
        if(typeof attr.location === 'number') {
          attributeLocations.push(attr.location + j)
        } else if(Array.isArray(attr.location) &&
                  attr.location.length === size &&
                  typeof attr.location[j] === 'number') {
          attributeLocations.push(attr.location[j]|0)
        } else {
          attributeLocations.push(-1)
        }
      }
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: locVector
      })
    } else {
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: [ attributeLocations.length ]
      })
      attributeNames.push(attr.name)
      if(typeof attr.location === 'number') {
        attributeLocations.push(attr.location|0)
      } else {
        attributeLocations.push(-1)
      }
    }
  }

  //For all unspecified attributes, assign them lexicographically min attribute
  var curLocation = 0
  for(i=0; i<attributeLocations.length; ++i) {
    if(attributeLocations[i] < 0) {
      while(attributeLocations.indexOf(curLocation) >= 0) {
        curLocation += 1
      }
      attributeLocations[i] = curLocation
    }
  }

  //Rebuild program and recompute all uniform locations
  var uniformLocations = new Array(uniforms.length)
  function relink() {
    wrapper.program = shaderCache.program(
        gl
      , wrapper._vref
      , wrapper._fref
      , attributeNames
      , attributeLocations)

    for(var i=0; i<uniforms.length; ++i) {
      uniformLocations[i] = gl.getUniformLocation(
          wrapper.program
        , uniforms[i].name)
    }
  }

  //Perform initial linking, reuse program used for reflection
  relink()

  //Save relinking procedure, defer until runtime
  wrapper._relink = relink

  //Generate type info
  wrapper.types = {
    uniforms:   makeReflect(uniforms),
    attributes: makeReflect(attributes)
  }

  //Generate attribute wrappers
  wrapper.attributes = createAttributeWrapper(
      gl
    , wrapper
    , attributeUnpacked
    , attributeLocations)

  //Generate uniform wrappers
  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
      gl
    , wrapper
    , uniforms
    , uniformLocations))
}

//Compiles and links a shader program with the given attribute and vertex list
function createShader(
    gl
  , vertSource
  , fragSource
  , uniforms
  , attributes) {

  var shader = new Shader(gl)

  shader.update(
      vertSource
    , fragSource
    , uniforms
    , attributes)

  return shader
}

module.exports = createShader

},{"./lib/GLError":188,"./lib/create-attributes":189,"./lib/create-uniforms":190,"./lib/reflect":191,"./lib/runtime-reflect":192,"./lib/shader-cache":193}],188:[function(require,module,exports){
function GLError (rawError, shortMessage, longMessage) {
    this.shortMessage = shortMessage || ''
    this.longMessage = longMessage || ''
    this.rawError = rawError || ''
    this.message =
      'gl-shader: ' + (shortMessage || rawError || '') +
      (longMessage ? '\n'+longMessage : '')
    this.stack = (new Error()).stack
}
GLError.prototype = new Error
GLError.prototype.name = 'GLError'
GLError.prototype.constructor = GLError
module.exports = GLError

},{}],189:[function(require,module,exports){
'use strict'

module.exports = createAttributeWrapper

var GLError = require("./GLError")

function ShaderAttribute(
    gl
  , wrapper
  , index
  , locations
  , dimension
  , constFunc) {
  this._gl        = gl
  this._wrapper   = wrapper
  this._index     = index
  this._locations = locations
  this._dimension = dimension
  this._constFunc = constFunc
}

var proto = ShaderAttribute.prototype

proto.pointer = function setAttribPointer(
    type
  , normalized
  , stride
  , offset) {

  var self      = this
  var gl        = self._gl
  var location  = self._locations[self._index]

  gl.vertexAttribPointer(
      location
    , self._dimension
    , type || gl.FLOAT
    , !!normalized
    , stride || 0
    , offset || 0)
  gl.enableVertexAttribArray(location)
}

proto.set = function(x0, x1, x2, x3) {
  return this._constFunc(this._locations[this._index], x0, x1, x2, x3)
}

Object.defineProperty(proto, 'location', {
  get: function() {
    return this._locations[this._index]
  }
  , set: function(v) {
    if(v !== this._locations[this._index]) {
      this._locations[this._index] = v|0
      this._wrapper.program = null
    }
    return v|0
  }
})

//Adds a vector attribute to obj
function addVectorAttribute(
    gl
  , wrapper
  , index
  , locations
  , dimension
  , obj
  , name) {

  //Construct constant function
  var constFuncArgs = [ 'gl', 'v' ]
  var varNames = []
  for(var i=0; i<dimension; ++i) {
    constFuncArgs.push('x'+i)
    varNames.push('x'+i)
  }
  constFuncArgs.push(
    'if(x0.length===void 0){return gl.vertexAttrib' +
    dimension + 'f(v,' +
    varNames.join() +
    ')}else{return gl.vertexAttrib' +
    dimension +
    'fv(v,x0)}')
  var constFunc = Function.apply(null, constFuncArgs)

  //Create attribute wrapper
  var attr = new ShaderAttribute(
      gl
    , wrapper
    , index
    , locations
    , dimension
    , constFunc)

  //Create accessor
  Object.defineProperty(obj, name, {
    set: function(x) {
      gl.disableVertexAttribArray(locations[index])
      constFunc(gl, locations[index], x)
      return x
    }
    , get: function() {
      return attr
    }
    , enumerable: true
  })
}

function addMatrixAttribute(
    gl
  , wrapper
  , index
  , locations
  , dimension
  , obj
  , name) {

  var parts = new Array(dimension)
  var attrs = new Array(dimension)
  for(var i=0; i<dimension; ++i) {
    addVectorAttribute(
        gl
      , wrapper
      , index[i]
      , locations
      , dimension
      , parts
      , i)
    attrs[i] = parts[i]
  }

  Object.defineProperty(parts, 'location', {
    set: function(v) {
      if(Array.isArray(v)) {
        for(var i=0; i<dimension; ++i) {
          attrs[i].location = v[i]
        }
      } else {
        for(var i=0; i<dimension; ++i) {
          attrs[i].location = v + i
        }
      }
      return v
    }
    , get: function() {
      var result = new Array(dimension)
      for(var i=0; i<dimension; ++i) {
        result[i] = locations[index[i]]
      }
      return result
    }
    , enumerable: true
  })

  parts.pointer = function(type, normalized, stride, offset) {
    type       = type || gl.FLOAT
    normalized = !!normalized
    stride     = stride || (dimension * dimension)
    offset     = offset || 0
    for(var i=0; i<dimension; ++i) {
      var location = locations[index[i]]
      gl.vertexAttribPointer(
            location
          , dimension
          , type
          , normalized
          , stride
          , offset + i * dimension)
      gl.enableVertexAttribArray(location)
    }
  }

  var scratch = new Array(dimension)
  var vertexAttrib = gl['vertexAttrib' + dimension + 'fv']

  Object.defineProperty(obj, name, {
    set: function(x) {
      for(var i=0; i<dimension; ++i) {
        var loc = locations[index[i]]
        gl.disableVertexAttribArray(loc)
        if(Array.isArray(x[0])) {
          vertexAttrib.call(gl, loc, x[i])
        } else {
          for(var j=0; j<dimension; ++j) {
            scratch[j] = x[dimension*i + j]
          }
          vertexAttrib.call(gl, loc, scratch)
        }
      }
      return x
    }
    , get: function() {
      return parts
    }
    , enumerable: true
  })
}

//Create shims for attributes
function createAttributeWrapper(
    gl
  , wrapper
  , attributes
  , locations) {

  var obj = {}
  for(var i=0, n=attributes.length; i<n; ++i) {

    var a = attributes[i]
    var name = a.name
    var type = a.type
    var locs = a.locations

    switch(type) {
      case 'bool':
      case 'int':
      case 'float':
        addVectorAttribute(
            gl
          , wrapper
          , locs[0]
          , locations
          , 1
          , obj
          , name)
      break

      default:
        if(type.indexOf('vec') >= 0) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
          }
          addVectorAttribute(
              gl
            , wrapper
            , locs[0]
            , locations
            , d
            , obj
            , name)
        } else if(type.indexOf('mat') >= 0) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type for attribute ' + name + ': ' + type)
          }
          addMatrixAttribute(
              gl
            , wrapper
            , locs
            , locations
            , d
            , obj
            , name)
        } else {
          throw new GLError('', 'Unknown data type for attribute ' + name + ': ' + type)
        }
      break
    }
  }
  return obj
}

},{"./GLError":188}],190:[function(require,module,exports){
'use strict'

var coallesceUniforms = require('./reflect')
var GLError = require("./GLError")

module.exports = createUniformWrapper

//Binds a function and returns a value
function identity(x) {
  var c = new Function('y', 'return function(){return y}')
  return c(x)
}

function makeVector(length, fill) {
  var result = new Array(length)
  for(var i=0; i<length; ++i) {
    result[i] = fill
  }
  return result
}

//Create shims for uniforms
function createUniformWrapper(gl, wrapper, uniforms, locations) {

  function makeGetter(index) {
    var proc = new Function(
        'gl'
      , 'wrapper'
      , 'locations'
      , 'return function(){return gl.getUniform(wrapper.program,locations[' + index + '])}')
    return proc(gl, wrapper, locations)
  }

  function makePropSetter(path, index, type) {
    switch(type) {
      case 'bool':
      case 'int':
      case 'sampler2D':
      case 'samplerCube':
        return 'gl.uniform1i(locations[' + index + '],obj' + path + ')'
      case 'float':
        return 'gl.uniform1f(locations[' + index + '],obj' + path + ')'
      default:
        var vidx = type.indexOf('vec')
        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type')
          }
          switch(type.charAt(0)) {
            case 'b':
            case 'i':
              return 'gl.uniform' + d + 'iv(locations[' + index + '],obj' + path + ')'
            case 'v':
              return 'gl.uniform' + d + 'fv(locations[' + index + '],obj' + path + ')'
            default:
              throw new GLError('', 'Unrecognized data type for vector ' + name + ': ' + type)
          }
        } else if(type.indexOf('mat') === 0 && type.length === 4) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
          }
          return 'gl.uniformMatrix' + d + 'fv(locations[' + index + '],false,obj' + path + ')'
        } else {
          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
        }
      break
    }
  }

  function enumerateIndices(prefix, type) {
    if(typeof type !== 'object') {
      return [ [prefix, type] ]
    }
    var indices = []
    for(var id in type) {
      var prop = type[id]
      var tprefix = prefix
      if(parseInt(id) + '' === id) {
        tprefix += '[' + id + ']'
      } else {
        tprefix += '.' + id
      }
      if(typeof prop === 'object') {
        indices.push.apply(indices, enumerateIndices(tprefix, prop))
      } else {
        indices.push([tprefix, prop])
      }
    }
    return indices
  }

  function makeSetter(type) {
    var code = [ 'return function updateProperty(obj){' ]
    var indices = enumerateIndices('', type)
    for(var i=0; i<indices.length; ++i) {
      var item = indices[i]
      var path = item[0]
      var idx  = item[1]
      if(locations[idx]) {
        code.push(makePropSetter(path, idx, uniforms[idx].type))
      }
    }
    code.push('return obj}')
    var proc = new Function('gl', 'locations', code.join('\n'))
    return proc(gl, locations)
  }

  function defaultValue(type) {
    switch(type) {
      case 'bool':
        return false
      case 'int':
      case 'sampler2D':
      case 'samplerCube':
        return 0
      case 'float':
        return 0.0
      default:
        var vidx = type.indexOf('vec')
        if(0 <= vidx && vidx <= 1 && type.length === 4 + vidx) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid data type')
          }
          if(type.charAt(0) === 'b') {
            return makeVector(d, false)
          }
          return makeVector(d, 0)
        } else if(type.indexOf('mat') === 0 && type.length === 4) {
          var d = type.charCodeAt(type.length-1) - 48
          if(d < 2 || d > 4) {
            throw new GLError('', 'Invalid uniform dimension type for matrix ' + name + ': ' + type)
          }
          return makeVector(d*d, 0)
        } else {
          throw new GLError('', 'Unknown uniform data type for ' + name + ': ' + type)
        }
      break
    }
  }

  function storeProperty(obj, prop, type) {
    if(typeof type === 'object') {
      var child = processObject(type)
      Object.defineProperty(obj, prop, {
        get: identity(child),
        set: makeSetter(type),
        enumerable: true,
        configurable: false
      })
    } else {
      if(locations[type]) {
        Object.defineProperty(obj, prop, {
          get: makeGetter(type),
          set: makeSetter(type),
          enumerable: true,
          configurable: false
        })
      } else {
        obj[prop] = defaultValue(uniforms[type].type)
      }
    }
  }

  function processObject(obj) {
    var result
    if(Array.isArray(obj)) {
      result = new Array(obj.length)
      for(var i=0; i<obj.length; ++i) {
        storeProperty(result, i, obj[i])
      }
    } else {
      result = {}
      for(var id in obj) {
        storeProperty(result, id, obj[id])
      }
    }
    return result
  }

  //Return data
  var coallesced = coallesceUniforms(uniforms, true)
  return {
    get: identity(processObject(coallesced)),
    set: makeSetter(coallesced),
    enumerable: true,
    configurable: true
  }
}

},{"./GLError":188,"./reflect":191}],191:[function(require,module,exports){
'use strict'

module.exports = makeReflectTypes

//Construct type info for reflection.
//
// This iterates over the flattened list of uniform type values and smashes them into a JSON object.
//
// The leaves of the resulting object are either indices or type strings representing primitive glslify types
function makeReflectTypes(uniforms, useIndex) {
  var obj = {}
  for(var i=0; i<uniforms.length; ++i) {
    var n = uniforms[i].name
    var parts = n.split(".")
    var o = obj
    for(var j=0; j<parts.length; ++j) {
      var x = parts[j].split("[")
      if(x.length > 1) {
        if(!(x[0] in o)) {
          o[x[0]] = []
        }
        o = o[x[0]]
        for(var k=1; k<x.length; ++k) {
          var y = parseInt(x[k])
          if(k<x.length-1 || j<parts.length-1) {
            if(!(y in o)) {
              if(k < x.length-1) {
                o[y] = []
              } else {
                o[y] = {}
              }
            }
            o = o[y]
          } else {
            if(useIndex) {
              o[y] = i
            } else {
              o[y] = uniforms[i].type
            }
          }
        }
      } else if(j < parts.length-1) {
        if(!(x[0] in o)) {
          o[x[0]] = {}
        }
        o = o[x[0]]
      } else {
        if(useIndex) {
          o[x[0]] = i
        } else {
          o[x[0]] = uniforms[i].type
        }
      }
    }
  }
  return obj
}
},{}],192:[function(require,module,exports){
'use strict'

exports.uniforms    = runtimeUniforms
exports.attributes  = runtimeAttributes

var GL_TO_GLSL_TYPES = {
  'FLOAT':       'float',
  'FLOAT_VEC2':  'vec2',
  'FLOAT_VEC3':  'vec3',
  'FLOAT_VEC4':  'vec4',
  'INT':         'int',
  'INT_VEC2':    'ivec2',
  'INT_VEC3':    'ivec3',
  'INT_VEC4':    'ivec4',
  'BOOL':        'bool',
  'BOOL_VEC2':   'bvec2',
  'BOOL_VEC3':   'bvec3',
  'BOOL_VEC4':   'bvec4',
  'FLOAT_MAT2':  'mat2',
  'FLOAT_MAT3':  'mat3',
  'FLOAT_MAT4':  'mat4',
  'SAMPLER_2D':  'sampler2D',
  'SAMPLER_CUBE':'samplerCube'
}

var GL_TABLE = null

function getType(gl, type) {
  if(!GL_TABLE) {
    var typeNames = Object.keys(GL_TO_GLSL_TYPES)
    GL_TABLE = {}
    for(var i=0; i<typeNames.length; ++i) {
      var tn = typeNames[i]
      GL_TABLE[gl[tn]] = GL_TO_GLSL_TYPES[tn]
    }
  }
  return GL_TABLE[type]
}

function runtimeUniforms(gl, program) {
  var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS)
  var result = []
  for(var i=0; i<numUniforms; ++i) {
    var info = gl.getActiveUniform(program, i)
    if(info) {
      var type = getType(gl, info.type)
      if(info.size > 1) {
        for(var j=0; j<info.size; ++j) {
          result.push({
            name: info.name.replace('[0]', '[' + j + ']'),
            type: type
          })
        }
      } else {
        result.push({
          name: info.name,
          type: type
        })
      }
    }
  }
  return result
}

function runtimeAttributes(gl, program) {
  var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES)
  var result = []
  for(var i=0; i<numAttributes; ++i) {
    var info = gl.getActiveAttrib(program, i)
    if(info) {
      result.push({
        name: info.name,
        type: getType(gl, info.type)
      })
    }
  }
  return result
}

},{}],193:[function(require,module,exports){
'use strict'

exports.shader   = getShaderReference
exports.program  = createProgram

var GLError = require("./GLError")
var formatCompilerError = require('gl-format-compiler-error');

var weakMap = typeof WeakMap === 'undefined' ? require('weakmap-shim') : WeakMap
var CACHE = new weakMap()

var SHADER_COUNTER = 0

function ShaderReference(id, src, type, shader, programs, count, cache) {
  this.id       = id
  this.src      = src
  this.type     = type
  this.shader   = shader
  this.count    = count
  this.programs = []
  this.cache    = cache
}

ShaderReference.prototype.dispose = function() {
  if(--this.count === 0) {
    var cache    = this.cache
    var gl       = cache.gl

    //Remove program references
    var programs = this.programs
    for(var i=0, n=programs.length; i<n; ++i) {
      var p = cache.programs[programs[i]]
      if(p) {
        delete cache.programs[i]
        gl.deleteProgram(p)
      }
    }

    //Remove shader reference
    gl.deleteShader(this.shader)
    delete cache.shaders[(this.type === gl.FRAGMENT_SHADER)|0][this.src]
  }
}

function ContextCache(gl) {
  this.gl       = gl
  this.shaders  = [{}, {}]
  this.programs = {}
}

var proto = ContextCache.prototype

function compileShader(gl, type, src) {
  var shader = gl.createShader(type)
  gl.shaderSource(shader, src)
  gl.compileShader(shader)
  if(!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
    var errLog = gl.getShaderInfoLog(shader)
    try {
        var fmt = formatCompilerError(errLog, src, type);
    } catch (e){
        console.warn('Failed to format compiler error: ' + e);
        throw new GLError(errLog, 'Error compiling shader:\n' + errLog)
    }
    throw new GLError(errLog, fmt.short, fmt.long)
  }
  return shader
}

proto.getShaderReference = function(type, src) {
  var gl      = this.gl
  var shaders = this.shaders[(type === gl.FRAGMENT_SHADER)|0]
  var shader  = shaders[src]
  if(!shader || !gl.isShader(shader.shader)) {
    var shaderObj = compileShader(gl, type, src)
    shader = shaders[src] = new ShaderReference(
      SHADER_COUNTER++,
      src,
      type,
      shaderObj,
      [],
      1,
      this)
  } else {
    shader.count += 1
  }
  return shader
}

function linkProgram(gl, vshader, fshader, attribs, locations) {
  var program = gl.createProgram()
  gl.attachShader(program, vshader)
  gl.attachShader(program, fshader)
  for(var i=0; i<attribs.length; ++i) {
    gl.bindAttribLocation(program, locations[i], attribs[i])
  }
  gl.linkProgram(program)
  if(!gl.getProgramParameter(program, gl.LINK_STATUS)) {
    var errLog = gl.getProgramInfoLog(program)
    throw new GLError(errLog, 'Error linking program: ' + errLog)
  }
  return program
}

proto.getProgram = function(vref, fref, attribs, locations) {
  var token = [vref.id, fref.id, attribs.join(':'), locations.join(':')].join('@')
  var prog  = this.programs[token]
  if(!prog || !this.gl.isProgram(prog)) {
    this.programs[token] = prog = linkProgram(
      this.gl,
      vref.shader,
      fref.shader,
      attribs,
      locations)
    vref.programs.push(token)
    fref.programs.push(token)
  }
  return prog
}

function getCache(gl) {
  var ctxCache = CACHE.get(gl)
  if(!ctxCache) {
    ctxCache = new ContextCache(gl)
    CACHE.set(gl, ctxCache)
  }
  return ctxCache
}

function getShaderReference(gl, type, src) {
  return getCache(gl).getShaderReference(type, src)
}

function createProgram(gl, vref, fref, attribs, locations) {
  return getCache(gl).getProgram(vref, fref, attribs, locations)
}

},{"./GLError":188,"gl-format-compiler-error":140,"weakmap-shim":1014}],194:[function(require,module,exports){
'use strict'

module.exports = createGLPlot2D

var createPick = require('gl-select-static')

var createGrid = require('./lib/grid')
var createText = require('./lib/text')
var createLine = require('./lib/line')
var createBox  = require('./lib/box')

function GLPlot2D(gl, pickBuffer) {
  this.gl               = gl
  this.pickBuffer       = pickBuffer

  this.screenBox        = [0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight]
  this.viewBox          = [0, 0, 0, 0]
  this.dataBox          = [-10, -10, 10, 10]

  this.gridLineEnable   = [true,true]
  this.gridLineWidth    = [1,1]
  this.gridLineColor    = [[0,0,0,1],
                           [0,0,0,1]]

  this.pixelRatio       = 1

  this.tickMarkLength   = [0,0,0,0]
  this.tickMarkWidth    = [0,0,0,0]
  this.tickMarkColor    = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  this.tickPad          = [15,15,15,15]
  this.tickAngle        = [0,0,0,0]
  this.tickEnable       = [true,true,true,true]
  this.tickColor        = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  this.labelPad         = [15,15,15,15]
  this.labelAngle       = [0,Math.PI/2,0,3.0*Math.PI/2]
  this.labelEnable      = [true,true,true,true]
  this.labelColor       = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  this.titleCenter      = [0,0]
  this.titleEnable      = true
  this.titleAngle       = 0
  this.titleColor       = [0,0,0,1]

  this.borderColor      = [0,0,0,0]
  this.backgroundColor  = [0,0,0,0]

  this.zeroLineEnable   = [true, true]
  this.zeroLineWidth    = [4, 4]
  this.zeroLineColor    = [[0, 0, 0, 1],[0, 0, 0, 1]]

  this.borderLineEnable = [true,true,true,true]
  this.borderLineWidth  = [2,2,2,2]
  this.borderLineColor  = [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]]

  //Drawing parameters
  this.grid             = null
  this.text             = null
  this.line             = null
  this.box              = null
  this.objects          = []
  this.overlays         = []

  this._tickBounds      = [Infinity, Infinity, -Infinity, -Infinity]

  this.static = false

  this.dirty        = false
  this.pickDirty    = false
  this.pickDelay    = 120
  this.pickRadius   = 10
  this._pickTimeout = null
  this._drawPick    = this.drawPick.bind(this)

  this._depthCounter = 0
}

var proto = GLPlot2D.prototype

proto.setDirty = function() {
  this.dirty = this.pickDirty = true
}

proto.setOverlayDirty = function() {
  this.dirty = true
}

proto.nextDepthValue = function() {
  return (this._depthCounter++) / 65536.0
}

function lerp(a, b, t) {
  var s = 0.5 * (t + 1.0)
  return Math.floor((1.0-s)*a + s*b)|0
}

proto.draw = (function() {
var TICK_MARK_BOX = [0,0,0,0]
return function() {
  var gl         = this.gl
  var screenBox  = this.screenBox
  var viewPixels = this.viewBox
  var dataBox    = this.dataBox
  var pixelRatio = this.pixelRatio
  var grid       = this.grid
  var line       = this.line
  var text       = this.text
  var objects    = this.objects

  this._depthCounter = 0

  if(this.pickDirty) {
    if(this._pickTimeout) {
      clearTimeout(this._pickTimeout)
    }
    this.pickDirty = false
    this._pickTimeout = setTimeout(this._drawPick, this.pickDelay)
  }

  if(!this.dirty) {
    return
  }
  this.dirty = false

  gl.bindFramebuffer(gl.FRAMEBUFFER, null)

  //Turn on scissor
  gl.enable(gl.SCISSOR_TEST)

  //Turn off depth buffer
  gl.disable(gl.DEPTH_TEST)
  gl.depthFunc(gl.LESS)
  gl.depthMask(false)

  //Configure premultiplied alpha blending
  gl.enable(gl.BLEND)
  gl.blendEquation(gl.FUNC_ADD, gl.FUNC_ADD);
  gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);

  //Draw border
  gl.scissor(
    screenBox[0],
    screenBox[1],
    screenBox[2]-screenBox[0],
    screenBox[3]-screenBox[1])
  var borderColor = this.borderColor
  gl.clearColor(
    borderColor[0]*borderColor[3],
    borderColor[1]*borderColor[3],
    borderColor[2]*borderColor[3],
    borderColor[3])
  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

  //Draw center pane
  gl.scissor(
    viewPixels[0],
    viewPixels[1],
    viewPixels[2]-viewPixels[0],
    viewPixels[3]-viewPixels[1])
  gl.viewport(
    viewPixels[0],
    viewPixels[1],
    viewPixels[2]-viewPixels[0],
    viewPixels[3]-viewPixels[1])
  var backgroundColor = this.backgroundColor
  gl.clearColor(
    backgroundColor[0]*backgroundColor[3],
    backgroundColor[1]*backgroundColor[3],
    backgroundColor[2]*backgroundColor[3],
    backgroundColor[3])
  gl.clear(gl.COLOR_BUFFER_BIT)

  //Draw grid
  grid.draw()

  //Draw zero lines separately
  var zeroLineEnable = this.zeroLineEnable
  var zeroLineColor  = this.zeroLineColor
  var zeroLineWidth  = this.zeroLineWidth
  if(zeroLineEnable[0] || zeroLineEnable[1]) {
    line.bind()
    for(var i=0; i<2; ++i) {
      if(!zeroLineEnable[i] ||
        !(dataBox[i] <= 0 && dataBox[i+2] >= 0)) {
        continue
      }

      var zeroIntercept = screenBox[i] -
        dataBox[i] * (screenBox[i+2] - screenBox[i]) / (dataBox[i+2] - dataBox[i])

      if(i === 0) {
        line.drawLine(
          zeroIntercept, screenBox[1], zeroIntercept, screenBox[3],
          zeroLineWidth[i],
          zeroLineColor[i])
      } else {
        line.drawLine(
          screenBox[0], zeroIntercept, screenBox[2], zeroIntercept,
          zeroLineWidth[i],
          zeroLineColor[i])
      }
    }
  }

  //Draw traces
  for(var i=0; i<objects.length; ++i) {
    objects[i].draw()
  }

  //Return viewport to default
  gl.viewport(
    screenBox[0],
    screenBox[1],
    screenBox[2]-screenBox[0],
    screenBox[3]-screenBox[1])
  gl.scissor(
    screenBox[0],
    screenBox[1],
    screenBox[2]-screenBox[0],
    screenBox[3]-screenBox[1])

  //Draw tick marks
  this.grid.drawTickMarks()

  //Draw line elements
  line.bind()

  //Draw border lines
  var borderLineEnable = this.borderLineEnable
  var borderLineWidth  = this.borderLineWidth
  var borderLineColor  = this.borderLineColor
  if(borderLineEnable[1]) {
    line.drawLine(
      viewPixels[0], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
      viewPixels[0], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
      borderLineWidth[1], borderLineColor[1])
  }
  if(borderLineEnable[0]) {
    line.drawLine(
      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[1],
      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[1],
      borderLineWidth[0], borderLineColor[0])
  }
  if(borderLineEnable[3]) {
    line.drawLine(
      viewPixels[2], viewPixels[1] - 0.5*borderLineWidth[1]*pixelRatio,
      viewPixels[2], viewPixels[3] + 0.5*borderLineWidth[3]*pixelRatio,
      borderLineWidth[3], borderLineColor[3])
  }
  if(borderLineEnable[2]) {
    line.drawLine(
      viewPixels[0] - 0.5*borderLineWidth[0]*pixelRatio, viewPixels[3],
      viewPixels[2] + 0.5*borderLineWidth[2]*pixelRatio, viewPixels[3],
      borderLineWidth[2], borderLineColor[2])
  }

  //Draw text elements
  text.bind()
  for(var i=0; i<2; ++i) {
    text.drawTicks(i)
  }
  if(this.titleEnable) {
    text.drawTitle()
  }

  //Draw other overlay elements (select boxes, etc.)
  var overlays = this.overlays
  for(var i=0; i<overlays.length; ++i) {
    overlays[i].draw()
  }

  //Turn off scissor test
  gl.disable(gl.SCISSOR_TEST)
  gl.disable(gl.BLEND)
  gl.depthMask(true)
}
})()

proto.drawPick = (function() {

return function() {
  if (this.static) return;

  var pickBuffer = this.pickBuffer
  var gl = this.gl

  this._pickTimeout = null
  pickBuffer.begin()

  var pickOffset = 1
  var objects = this.objects
  for(var i=0; i<objects.length; ++i) {
    pickOffset = objects[i].drawPick(pickOffset)
  }

  pickBuffer.end()
}
})()

proto.pick = (function() {
return function(x, y) {
  if (this.static) return;

  var pixelRatio     = this.pixelRatio
  var pickPixelRatio = this.pickPixelRatio
  var viewBox        = this.viewBox

  var scrX = Math.round((x - viewBox[0] / pixelRatio) * pickPixelRatio)|0
  var scrY = Math.round((y - viewBox[1] / pixelRatio) * pickPixelRatio)|0

  var pickResult = this.pickBuffer.query(scrX, scrY, this.pickRadius)
  if(!pickResult) {
    return null
  }

  var pickValue = pickResult.id +
    (pickResult.value[0]<<8)  +
    (pickResult.value[1]<<16) +
    (pickResult.value[2]<<24)

  var objects = this.objects
  for(var i=0; i<objects.length; ++i) {
    var result = objects[i].pick(scrX, scrY, pickValue)
    if(result) {
      return result
    }
  }

  return null
}
})()

function deepClone(array) {
  var result = array.slice()
  for(var i=0; i<result.length; ++i) {
    result[i] = result[i].slice()
  }
  return result
}

function compareTicks(a, b) {
  return a.x - b.x
}

proto.setScreenBox = function(nbox) {
  var screenBox = this.screenBox
  var pixelRatio = this.pixelRatio

  screenBox[0] = Math.round(nbox[0] * pixelRatio) | 0
  screenBox[1] = Math.round(nbox[1] * pixelRatio) | 0
  screenBox[2] = Math.round(nbox[2] * pixelRatio) | 0
  screenBox[3] = Math.round(nbox[3] * pixelRatio) | 0

  this.setDirty()
}

proto.setDataBox = function(nbox) {
  var dataBox = this.dataBox

  var different =
    dataBox[0] !== nbox[0] ||
    dataBox[1] !== nbox[1] ||
    dataBox[2] !== nbox[2] ||
    dataBox[3] !== nbox[3]

  if(different) {
    dataBox[0] = nbox[0]
    dataBox[1] = nbox[1]
    dataBox[2] = nbox[2]
    dataBox[3] = nbox[3]

    this.setDirty()
  }
}

proto.setViewBox = function(nbox) {
  var pixelRatio = this.pixelRatio
  var viewBox = this.viewBox

  viewBox[0] = Math.round(nbox[0] * pixelRatio)|0
  viewBox[1] = Math.round(nbox[1] * pixelRatio)|0
  viewBox[2] = Math.round(nbox[2] * pixelRatio)|0
  viewBox[3] = Math.round(nbox[3] * pixelRatio)|0

  var pickPixelRatio = this.pickPixelRatio
  this.pickBuffer.shape = [
    Math.round((nbox[2] - nbox[0]) * pickPixelRatio)|0,
    Math.round((nbox[3] - nbox[1]) * pickPixelRatio)|0 ]

  this.setDirty()
}

proto.update = function(options) {
  options = options || {}

  var gl = this.gl

  this.pixelRatio      = options.pixelRatio || 1

  var pixelRatio       = this.pixelRatio
  this.pickPixelRatio  = Math.max(pixelRatio, 1)

  this.setScreenBox(options.screenBox ||
    [0, 0, gl.drawingBufferWidth/pixelRatio, gl.drawingBufferHeight/pixelRatio])

  var screenBox = this.screenBox
  this.setViewBox(options.viewBox ||
    [0.125*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
     0.125*(this.screenBox[3]-this.screenBox[1])/pixelRatio,
     0.875*(this.screenBox[2]-this.screenBox[0])/pixelRatio,
     0.875*(this.screenBox[3]-this.screenBox[1])/pixelRatio])

  var viewBox = this.viewBox
  var aspectRatio = (viewBox[2] - viewBox[0]) / (viewBox[3] - viewBox[1])
  this.setDataBox(options.dataBox || [-10, -10/aspectRatio, 10, 10/aspectRatio])

  this.borderColor     = (options.borderColor     || [0,0,0,0]).slice()
  this.backgroundColor = (options.backgroundColor || [0,0,0,0]).slice()

  this.gridLineEnable  = (options.gridLineEnable || [true,true]).slice()
  this.gridLineWidth   = (options.gridLineWidth || [1,1]).slice()
  this.gridLineColor   = deepClone(options.gridLineColor ||
    [[0.5,0.5,0.5,1],[0.5,0.5,0.5,1]])

  this.zeroLineEnable   = (options.zeroLineEnable || [true, true]).slice()
  this.zeroLineWidth    = (options.zeroLineWidth || [4, 4]).slice()
  this.zeroLineColor    = deepClone(options.zeroLineColor ||
    [[0, 0, 0, 1],[0, 0, 0, 1]])

  this.tickMarkLength   = (options.tickMarkLength || [0,0,0,0]).slice()
  this.tickMarkWidth    = (options.tickMarkWidth || [0,0,0,0]).slice()
  this.tickMarkColor    = deepClone(options.tickMarkColor ||
    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])

  this.titleCenter      = (options.titleCenter || [
    0.5*(viewBox[0]+viewBox[2])/pixelRatio,(viewBox[3]+120)/pixelRatio]).slice()
  this.titleEnable      = !('titleEnable' in options) || !!options.titleEnable
  this.titleAngle       = options.titleAngle || 0
  this.titleColor       = (options.titleColor || [0,0,0,1]).slice()

  this.labelPad         = (options.labelPad || [15,15,15,15]).slice()
  this.labelAngle       = (options.labelAngle ||
    [0,Math.PI/2,0,3.0*Math.PI/2]).slice()
  this.labelEnable      = (options.labelEnable || [true,true,true,true]).slice()
  this.labelColor       = deepClone(options.labelColor ||
    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])

  this.tickPad         = (options.tickPad || [15,15,15,15]).slice()
  this.tickAngle       = (options.tickAngle || [0,0,0,0]).slice()
  this.tickEnable      = (options.tickEnable || [true,true,true,true]).slice()
  this.tickColor       = deepClone(options.tickColor ||
    [[0,0,0,1],[0,0,0,1],[0,0,0,1],[0,0,0,1]])

  this.borderLineEnable = (options.borderLineEnable ||
                            [true,true,true,true]).slice()
  this.borderLineWidth  = (options.borderLineWidth || [2,2,2,2]).slice()
  this.borderLineColor  = deepClone(options.borderLineColor ||
                          [[0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1],
                           [0,0,0,1]])

  var ticks = options.ticks || [ [], [] ]

  //Compute bounds on ticks
  var bounds = this._tickBounds
  bounds[0] = bounds[1] =  Infinity
  bounds[2] = bounds[3] = -Infinity
  for(var i=0; i<2; ++i) {
    var axisTicks = ticks[i].slice(0)
    if(axisTicks.length === 0) {
      continue
    }
    axisTicks.sort(compareTicks)
    bounds[i]   = Math.min(bounds[i], axisTicks[0].x)
    bounds[i+2] = Math.max(bounds[i+2], axisTicks[axisTicks.length-1].x)
  }

  //Update grid
  this.grid.update({
    bounds: bounds,
    ticks:  ticks
  })

  //Update text
  this.text.update({
    bounds:     bounds,
    ticks:      ticks,
    labels:     options.labels    || ['x', 'y'],
    labelSize:  options.labelSize || [12,12],
    labelFont:  options.labelFont || ['sans-serif', 'sans-serif'],
    title:      options.title     || '',
    titleSize:  options.titleSize || 18,
    titleFont:  options.titleFont || 'sans-serif'
  })

  this.static = !!options.static;

  this.setDirty()
}

proto.dispose = function() {
  this.box.dispose()
  this.grid.dispose()
  this.text.dispose()
  this.line.dispose()
  for(var i=this.objects.length-1; i>=0; --i) {
    this.objects[i].dispose()
  }
  this.objects.length = 0
  for(var i=this.overlays.length-1; i>=0; --i) {
    this.overlays[i].dispose()
  }
  this.overlays.length = 0

  this.gl = null
}

proto.addObject = function(object) {
  if(this.objects.indexOf(object) < 0) {
    this.objects.push(object)
    this.setDirty()
  }
}

proto.removeObject = function(object) {
  var objects = this.objects
  for(var i=0; i<objects.length; ++i) {
    if(objects[i] === object) {
      objects.splice(i,1)
      this.setDirty()
      break
    }
  }
}

proto.addOverlay = function(object) {
  if(this.overlays.indexOf(object) < 0) {
    this.overlays.push(object)
    this.setOverlayDirty()
  }
}

proto.removeOverlay = function(object) {
  var objects = this.overlays
  for(var i=0; i<objects.length; ++i) {
    if(objects[i] === object) {
      objects.splice(i,1)
      this.setOverlayDirty()
      break
    }
  }
}

function createGLPlot2D(options) {
  var gl = options.gl
  var pickBuffer = createPick(gl, [
    gl.drawingBufferWidth, gl.drawingBufferHeight])
  var plot = new GLPlot2D(gl, pickBuffer)
  plot.grid = createGrid(plot)
  plot.text = createText(plot)
  plot.line = createLine(plot)
  plot.box  = createBox(plot)
  plot.update(options)
  return plot
}

},{"./lib/box":181,"./lib/grid":182,"./lib/line":183,"./lib/text":185,"gl-select-static":226}],195:[function(require,module,exports){

var createShader = require('gl-shader')

var vertSrc = "precision mediump float;\n#define GLSLIFY 1\nattribute vec2 position;\nvarying vec2 uv;\nvoid main() {\n  uv = position;\n  gl_Position = vec4(position, 0, 1);\n}"
var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform sampler2D accumBuffer;\nvarying vec2 uv;\n\nvoid main() {\n  vec4 accum = texture2D(accumBuffer, 0.5 * (uv + 1.0));\n  gl_FragColor = min(vec4(1,1,1,1), accum);\n}"

module.exports = function(gl) {
  return createShader(gl, vertSrc, fragSrc, null, [ { name: 'position', type: 'vec2'}])
}

},{"gl-shader":227}],196:[function(require,module,exports){
'use strict'

module.exports = createScene

var createCamera = require('3d-view-controls')
var createAxes   = require('gl-axes3d')
var axesRanges   = require('gl-axes3d/properties')
var createSpikes = require('gl-spikes3d')
var createSelect = require('gl-select-static')
var createFBO    = require('gl-fbo')
var drawTriangle = require('a-big-triangle')
var mouseChange  = require('mouse-change')
var perspective  = require('gl-mat4/perspective')
var createShader = require('./lib/shader')
var isMobile = require('is-mobile')()

function MouseSelect() {
  this.mouse          = [-1,-1]
  this.screen         = null
  this.distance       = Infinity
  this.index          = null
  this.dataCoordinate = null
  this.dataPosition   = null
  this.object         = null
  this.data           = null
}

function getContext(canvas, options) {
  var gl = null
  try {
    gl = canvas.getContext('webgl', options)
    if(!gl) {
      gl = canvas.getContext('experimental-webgl', options)
    }
  } catch(e) {
    return null
  }
  return gl
}

function roundUpPow10(x) {
  var y = Math.round(Math.log(Math.abs(x)) / Math.log(10))
  if(y < 0) {
    var base = Math.round(Math.pow(10, -y))
    return Math.ceil(x*base) / base
  } else if(y > 0) {
    var base = Math.round(Math.pow(10, y))
    return Math.ceil(x/base) * base
  }
  return Math.ceil(x)
}

function defaultBool(x) {
  if(typeof x === 'boolean') {
    return x
  }
  return true
}

function createScene(options) {
  options = options || {}

  var stopped = false

  var pixelRatio = options.pixelRatio || parseFloat(window.devicePixelRatio)

  var canvas = options.canvas
  if(!canvas) {
    canvas = document.createElement('canvas')
    if(options.container) {
      var container = options.container
      container.appendChild(canvas)
    } else {
      document.body.appendChild(canvas)
    }
  }

  var gl = options.gl
  if(!gl) {
    gl = getContext(canvas,
      options.glOptions || {
        premultipliedAlpha: true,
        antialias: true
      })
  }
  if(!gl) {
    throw new Error('webgl not supported')
  }

  //Initial bounds
  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]

  //Create selection
  var selection = new MouseSelect()

  //Accumulation buffer
  var accumBuffer = createFBO(gl,
    [gl.drawingBufferWidth, gl.drawingBufferHeight], {
      preferFloat: !isMobile
    })

  var accumShader = createShader(gl)

  //Create a camera
  var cameraOptions = options.camera || {
    eye:    [2,0,0],
    center: [0,0,0],
    up:     [0,1,0],
    zoomMin: 0.1,
    zoomMax: 100,
    mode:    'turntable'
  }

  //Create axes
  var axesOptions = options.axes || {}
  var axes = createAxes(gl, axesOptions)
  axes.enable = !axesOptions.disable

  //Create spikes
  var spikeOptions = options.spikes || {}
  var spikes = createSpikes(gl, spikeOptions)

  //Object list is empty initially
  var objects         = []
  var pickBufferIds   = []
  var pickBufferCount = []
  var pickBuffers     = []

  //Dirty flag, skip redraw if scene static
  var dirty       = true
  var pickDirty   = true

  var projection     = new Array(16)
  var model          = new Array(16)

  var cameraParams = {
    view:         null,
    projection:   projection,
    model:        model
  }

  var pickDirty = true

  var viewShape = [ gl.drawingBufferWidth, gl.drawingBufferHeight ]

  //Create scene object
  var scene = {
    gl:           gl,
    contextLost:  false,
    pixelRatio:   options.pixelRatio || parseFloat(window.devicePixelRatio),
    canvas:       canvas,
    selection:    selection,
    camera:       createCamera(canvas, cameraOptions),
    axes:         axes,
    axesPixels:   null,
    spikes:       spikes,
    bounds:       bounds,
    objects:      objects,
    shape:        viewShape,
    aspect:       options.aspectRatio || [1,1,1],
    pickRadius:   options.pickRadius || 10,
    zNear:        options.zNear || 0.01,
    zFar:         options.zFar  || 1000,
    fovy:         options.fovy  || Math.PI/4,
    clearColor:   options.clearColor || [0,0,0,0],
    autoResize:   defaultBool(options.autoResize),
    autoBounds:   defaultBool(options.autoBounds),
    autoScale:    !!options.autoScale,
    autoCenter:   defaultBool(options.autoCenter),
    clipToBounds: defaultBool(options.clipToBounds),
    snapToData:   !!options.snapToData,
    onselect:     options.onselect || null,
    onrender:     options.onrender || null,
    onclick:      options.onclick  || null,
    cameraParams: cameraParams,
    oncontextloss: null,
    mouseListener: null
  }

  var pickShape = [ (gl.drawingBufferWidth/scene.pixelRatio)|0, (gl.drawingBufferHeight/scene.pixelRatio)|0 ]

  function resizeListener() {
    if(stopped) {
      return
    }
    if(!scene.autoResize) {
      return
    }
    var parent = canvas.parentNode
    var width  = 1
    var height = 1
    if(parent && parent !== document.body) {
      width  = parent.clientWidth
      height = parent.clientHeight
    } else {
      width  = window.innerWidth
      height = window.innerHeight
    }
    var nextWidth  = Math.ceil(width  * scene.pixelRatio)|0
    var nextHeight = Math.ceil(height * scene.pixelRatio)|0
    if(nextWidth !== canvas.width || nextHeight !== canvas.height) {
      canvas.width   = nextWidth
      canvas.height  = nextHeight
      var style = canvas.style
      style.position = style.position || 'absolute'
      style.left     = '0px'
      style.top      = '0px'
      style.width    = width  + 'px'
      style.height   = height + 'px'
      dirty = true
    }
  }
  if(scene.autoResize) {
    resizeListener()
  }
  window.addEventListener('resize', resizeListener)

  function reallocPickIds() {
    var numObjs = objects.length
    var numPick = pickBuffers.length
    for(var i=0; i<numPick; ++i) {
      pickBufferCount[i] = 0
    }
    obj_loop:
    for(var i=0; i<numObjs; ++i) {
      var obj = objects[i]
      var pickCount = obj.pickSlots
      if(!pickCount) {
        pickBufferIds[i] = -1
        continue
      }
      for(var j=0; j<numPick; ++j) {
        if(pickBufferCount[j] + pickCount < 255) {
          pickBufferIds[i] = j
          obj.setPickBase(pickBufferCount[j]+1)
          pickBufferCount[j] += pickCount
          continue obj_loop
        }
      }
      //Create new pick buffer
      var nbuffer = createSelect(gl, viewShape)
      pickBufferIds[i] = numPick
      pickBuffers.push(nbuffer)
      pickBufferCount.push(pickCount)
      obj.setPickBase(1)
      numPick += 1
    }
    while(numPick > 0 && pickBufferCount[numPick-1] === 0) {
      pickBufferCount.pop()
      pickBuffers.pop().dispose()
    }
  }

  scene.update = function(options) {
    if(stopped) {
      return
    }
    options = options || {}
    dirty = true
    pickDirty = true
  }

  scene.add = function(obj) {
    if(stopped) {
      return
    }
    obj.axes = axes
    objects.push(obj)
    pickBufferIds.push(-1)
    dirty = true
    pickDirty = true
    reallocPickIds()
  }

  scene.remove = function(obj) {
    if(stopped) {
      return
    }
    var idx = objects.indexOf(obj)
    if(idx < 0) {
      return
    }
    objects.splice(idx, 1)
    pickBufferIds.pop()
    dirty = true
    pickDirty = true
    reallocPickIds()
  }

  scene.dispose = function() {
    if(stopped) {
      return
    }

    stopped = true

    window.removeEventListener('resize', resizeListener)
    canvas.removeEventListener('webglcontextlost', checkContextLoss)
    scene.mouseListener.enabled = false

    if(scene.contextLost) {
      return
    }

    //Destroy objects
    axes.dispose()
    spikes.dispose()
    for(var i=0; i<objects.length; ++i) {
      objects[i].dispose()
    }

    //Clean up buffers
    accumBuffer.dispose()
    for(var i=0; i<pickBuffers.length; ++i) {
      pickBuffers[i].dispose()
    }

    //Clean up shaders
    accumShader.dispose()

    //Release all references
    gl = null
    axes = null
    spikes = null
    objects = []
  }

  //Update mouse position
  var mouseRotating = false

  var prevButtons = 0

  scene.mouseListener = mouseChange(canvas, function(buttons, x, y) {
    if(stopped) {
      return
    }

    var numPick = pickBuffers.length
    var numObjs = objects.length
    var prevObj = selection.object

    selection.distance = Infinity
    selection.mouse[0] = x
    selection.mouse[1] = y
    selection.object = null
    selection.screen = null
    selection.dataCoordinate = selection.dataPosition = null

    var change = false

    if(buttons && prevButtons) {
      mouseRotating = true
    } else {
      if(mouseRotating) {
        pickDirty = true
      }
      mouseRotating = false

      for(var i=0; i<numPick; ++i) {
        var result = pickBuffers[i].query(x, pickShape[1] - y - 1, scene.pickRadius)
        if(result) {
          if(result.distance > selection.distance) {
            continue
          }
          for(var j=0; j<numObjs; ++j) {
            var obj = objects[j]
            if(pickBufferIds[j] !== i) {
              continue
            }
            var objPick = obj.pick(result)
            if(objPick) {
              selection.buttons        = buttons
              selection.screen         = result.coord
              selection.distance       = result.distance
              selection.object         = obj
              selection.index          = objPick.distance
              selection.dataPosition   = objPick.position
              selection.dataCoordinate = objPick.dataCoordinate
              selection.data           = objPick
              change = true
            }
          }
        }
      }
    }

    if(prevObj && prevObj !== selection.object) {
      if(prevObj.highlight) {
        prevObj.highlight(null)
      }
      dirty = true
    }
    if(selection.object) {
      if(selection.object.highlight) {
        selection.object.highlight(selection.data)
      }
      dirty = true
    }

    change = change || (selection.object !== prevObj)
    if(change && scene.onselect) {
      scene.onselect(selection)
    }

    if((buttons & 1) && !(prevButtons & 1) && scene.onclick) {
      scene.onclick(selection)
    }
    prevButtons = buttons
  })

  function checkContextLoss() {
    if(scene.contextLost) {
      return true
    }
    if(gl.isContextLost()) {
      scene.contextLost = true
      scene.mouseListener.enabled = false
      scene.selection.object = null
      if(scene.oncontextloss) {
        scene.oncontextloss()
      }
    }
  }

  canvas.addEventListener('webglcontextlost', checkContextLoss)

  //Render the scene for mouse picking
  function renderPick() {
    if(checkContextLoss()) {
      return
    }

    gl.colorMask(true, true, true, true)
    gl.depthMask(true)
    gl.disable(gl.BLEND)
    gl.enable(gl.DEPTH_TEST)

    var numObjs = objects.length
    var numPick = pickBuffers.length
    for(var j=0; j<numPick; ++j) {
      var buf = pickBuffers[j]
      buf.shape = pickShape
      buf.begin()
      for(var i=0; i<numObjs; ++i) {
        if(pickBufferIds[i] !== j) {
          continue
        }
        var obj = objects[i]
        if(obj.drawPick) {
          obj.pixelRatio = 1
          obj.drawPick(cameraParams)
        }
      }
      buf.end()
    }
  }

  var nBounds = [
    [ Infinity, Infinity, Infinity],
    [-Infinity,-Infinity,-Infinity]]

  var prevBounds = [nBounds[0].slice(), nBounds[1].slice()]

  function redraw() {
    if(checkContextLoss()) {
      return
    }

    resizeListener()

    //Tick camera
    var cameraMoved = scene.camera.tick()
    cameraParams.view = scene.camera.matrix
    dirty     = dirty || cameraMoved
    pickDirty = pickDirty || cameraMoved

      //Set pixel ratio
    axes.pixelRatio   = scene.pixelRatio
    spikes.pixelRatio = scene.pixelRatio

    //Check if any objects changed, recalculate bounds
    var numObjs = objects.length
    var lo = nBounds[0]
    var hi = nBounds[1]
    lo[0] = lo[1] = lo[2] =  Infinity
    hi[0] = hi[1] = hi[2] = -Infinity
    for(var i=0; i<numObjs; ++i) {
      var obj = objects[i]

      //Set the axes properties for each object
      obj.pixelRatio = scene.pixelRatio
      obj.axes = scene.axes

      dirty = dirty || !!obj.dirty
      pickDirty = pickDirty || !!obj.dirty
      var obb = obj.bounds
      if(obb) {
        var olo = obb[0]
        var ohi = obb[1]
        for(var j=0; j<3; ++j) {
          lo[j] = Math.min(lo[j], olo[j])
          hi[j] = Math.max(hi[j], ohi[j])
        }
      }
    }

    //Recalculate bounds
    var bounds = scene.bounds
    if(scene.autoBounds) {
      for(var j=0; j<3; ++j) {
        if(hi[j] < lo[j]) {
          lo[j] = -1
          hi[j] = 1
        } else {
          if(lo[j] === hi[j]) {
            lo[j] -= 1
            hi[j] += 1
          }
          var padding = 0.05 * (hi[j] - lo[j])
          lo[j] = lo[j] - padding
          hi[j] = hi[j] + padding
        }
        bounds[0][j] = lo[j]
        bounds[1][j] = hi[j]
      }
    }

    var boundsChanged = false
    for(var j=0; j<3; ++j) {
        boundsChanged = boundsChanged ||
            (prevBounds[0][j] !== bounds[0][j])  ||
            (prevBounds[1][j] !== bounds[1][j])
        prevBounds[0][j] = bounds[0][j]
        prevBounds[1][j] = bounds[1][j]
    }

    if(boundsChanged) {
      var tickSpacing = [0,0,0]
      for(var i=0; i<3; ++i) {
        tickSpacing[i] = roundUpPow10((bounds[1][i]-bounds[0][i]) / 10.0)
      }
      if(axes.autoTicks) {
        axes.update({
          bounds: bounds,
          tickSpacing: tickSpacing
        })
      } else {
        axes.update({
          bounds: bounds
        })
      }
    }

    //Recalculate bounds
    pickDirty = pickDirty || boundsChanged
    dirty = dirty || boundsChanged

    //Get scene
    var width  = gl.drawingBufferWidth
    var height = gl.drawingBufferHeight
    viewShape[0] = width
    viewShape[1] = height
    pickShape[0] = Math.max(width/scene.pixelRatio, 1)|0
    pickShape[1] = Math.max(height/scene.pixelRatio, 1)|0

    //Compute camera parameters
    perspective(projection,
      scene.fovy,
      width/height,
      scene.zNear,
      scene.zFar)

    //Compute model matrix
    for(var i=0; i<16; ++i) {
      model[i] = 0
    }
    model[15] = 1

    var maxS = 0
    for(var i=0; i<3; ++i) {
      maxS = Math.max(maxS, bounds[1][i] - bounds[0][i])
    }

    for(var i=0; i<3; ++i) {
      if(scene.autoScale) {
        model[5*i] = scene.aspect[i] / (bounds[1][i] - bounds[0][i])
      } else {
        model[5*i] = 1  / maxS
      }
      if(scene.autoCenter) {
        model[12+i] = -model[5*i] * 0.5 * (bounds[0][i] + bounds[1][i])
      }
    }

    //Apply axes/clip bounds
    for(var i=0; i<numObjs; ++i) {
      var obj = objects[i]

      //Set axes bounds
      obj.axesBounds = bounds

      //Set clip bounds
      if(scene.clipToBounds) {
        obj.clipBounds = bounds
      }
    }

    //Set spike parameters
    if(selection.object) {
      if(scene.snapToData) {
        spikes.position = selection.dataCoordinate
      } else {
        spikes.position = selection.dataPosition
      }
      spikes.bounds = bounds
    }

    //If state changed, then redraw pick buffers
    if(pickDirty) {
      pickDirty = false
      renderPick()
    }

    if(!dirty) {
      return
    }

    //Recalculate pixel data
    scene.axesPixels = axesRanges(scene.axes, cameraParams, width, height)

    //Call render callback
    if(scene.onrender) {
      scene.onrender()
    }

    //Read value
    gl.bindFramebuffer(gl.FRAMEBUFFER, null)
    gl.viewport(0, 0, width, height)

    //General strategy: 3 steps
    //  1. render non-transparent objects
    //  2. accumulate transparent objects into separate fbo
    //  3. composite final scene

    //Clear FBO
    var clearColor = scene.clearColor
    gl.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3])
    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
    gl.depthMask(true)
    gl.colorMask(true, true, true, true)
    gl.enable(gl.DEPTH_TEST)
    gl.depthFunc(gl.LEQUAL)
    gl.disable(gl.BLEND)
    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided

    //Render opaque pass
    var hasTransparent = false
    if(axes.enable) {
      hasTransparent = hasTransparent || axes.isTransparent()
      axes.draw(cameraParams)
    }
    spikes.axes = axes
    if(selection.object) {
      spikes.draw(cameraParams)
    }

    gl.disable(gl.CULL_FACE)  //most visualization surfaces are 2 sided

    for(var i=0; i<numObjs; ++i) {
      var obj = objects[i]
      obj.axes = axes
      obj.pixelRatio = scene.pixelRatio
      if(obj.isOpaque && obj.isOpaque()) {
        obj.draw(cameraParams)
      }
      if(obj.isTransparent && obj.isTransparent()) {
        hasTransparent = true
      }
    }

    if(hasTransparent) {
      //Render transparent pass
      accumBuffer.shape = viewShape
      accumBuffer.bind()
      gl.clear(gl.DEPTH_BUFFER_BIT)
      gl.colorMask(false, false, false, false)
      gl.depthMask(true)
      gl.depthFunc(gl.LESS)

      //Render forward facing objects
      if(axes.enable && axes.isTransparent()) {
        axes.drawTransparent(cameraParams)
      }
      for(var i=0; i<numObjs; ++i) {
        var obj = objects[i]
        if(obj.isOpaque && obj.isOpaque()) {
          obj.draw(cameraParams)
        }
      }

      //Render transparent pass
      gl.enable(gl.BLEND)
      gl.blendEquation(gl.FUNC_ADD)
      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
      gl.colorMask(true, true, true, true)
      gl.depthMask(false)
      gl.clearColor(0,0,0,0)
      gl.clear(gl.COLOR_BUFFER_BIT)

      if(axes.isTransparent()) {
        axes.drawTransparent(cameraParams)
      }

      for(var i=0; i<numObjs; ++i) {
        var obj = objects[i]
        if(obj.isTransparent && obj.isTransparent()) {
          obj.drawTransparent(cameraParams)
        }
      }

      //Unbind framebuffer
      gl.bindFramebuffer(gl.FRAMEBUFFER, null)

      //Draw composite pass
      gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA)
      gl.disable(gl.DEPTH_TEST)
      accumShader.bind()
      accumBuffer.color[0].bind(0)
      accumShader.uniforms.accumBuffer = 0
      drawTriangle(gl)

      //Turn off blending
      gl.disable(gl.BLEND)
    }

    //Clear dirty flags
    dirty = false
    for(var i=0; i<numObjs; ++i) {
      objects[i].dirty = false
    }
  }


  //Draw the whole scene
  function render() {
    if(stopped || scene.contextLost) {
      return
    }
    requestAnimationFrame(render)
    redraw()
  }
  render()

  //Force redraw of whole scene
  scene.redraw = function() {
    if(stopped) {
      return
    }
    dirty = true
    redraw()
  }

  return scene
}

},{"./lib/shader":195,"3d-view-controls":1,"a-big-triangle":3,"gl-axes3d":124,"gl-axes3d/properties":131,"gl-fbo":139,"gl-mat4/perspective":159,"gl-select-static":226,"gl-spikes3d":236,"is-mobile":271,"mouse-change":428}],197:[function(require,module,exports){


exports.pointVertex       = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform float pointCloud;\n\nhighp float rand(vec2 co) {\n  highp float a = 12.9898;\n  highp float b = 78.233;\n  highp float c = 43758.5453;\n  highp float d = dot(co.xy, vec2(a, b));\n  highp float e = mod(d, 3.14);\n  return fract(sin(e) * c);\n}\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n    // if we don't jitter the point size a bit, overall point cloud\n    // saturation 'jumps' on zooming, which is disturbing and confusing\n  gl_PointSize = pointSize * ((19.5 + rand(position)) / 20.0);\n  if(pointCloud != 0.0) { // pointCloud is truthy\n    // get the same square surface as circle would be\n    gl_PointSize *= 0.886;\n  }\n}"
exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\nuniform float pointCloud;\n\nvoid main() {\n  float radius;\n  vec4 baseColor;\n  if(pointCloud != 0.0) { // pointCloud is truthy\n    if(centerFraction == 1.0) {\n      gl_FragColor = color;\n    } else {\n      gl_FragColor = mix(borderColor, color, centerFraction);\n    }\n  } else {\n    radius = length(2.0 * gl_PointCoord.xy - 1.0);\n    if(radius > 1.0) {\n      discard;\n    }\n    baseColor = mix(borderColor, color, step(radius, centerFraction));\n    gl_FragColor = vec4(baseColor.rgb * baseColor.a, baseColor.a);\n  }\n}\n"
exports.pickVertex        = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 position;\nattribute vec4 pickId;\n\nuniform mat3 matrix;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n  vec3 hgPosition = matrix * vec3(position, 1);\n  gl_Position  = vec4(hgPosition.xy, 0, hgPosition.z);\n  gl_PointSize = pointSize;\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  fragId = id;\n}\n"
exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0 * gl_PointCoord.xy - 1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}\n"

},{}],198:[function(require,module,exports){
arguments[4][187][0].apply(exports,arguments)
},{"./lib/GLError":199,"./lib/create-attributes":200,"./lib/create-uniforms":201,"./lib/reflect":202,"./lib/runtime-reflect":203,"./lib/shader-cache":204,"dup":187}],199:[function(require,module,exports){
arguments[4][188][0].apply(exports,arguments)
},{"dup":188}],200:[function(require,module,exports){
arguments[4][189][0].apply(exports,arguments)
},{"./GLError":199,"dup":189}],201:[function(require,module,exports){
arguments[4][190][0].apply(exports,arguments)
},{"./GLError":199,"./reflect":202,"dup":190}],202:[function(require,module,exports){
arguments[4][191][0].apply(exports,arguments)
},{"dup":191}],203:[function(require,module,exports){
arguments[4][192][0].apply(exports,arguments)
},{"dup":192}],204:[function(require,module,exports){
arguments[4][193][0].apply(exports,arguments)
},{"./GLError":199,"dup":193,"gl-format-compiler-error":140,"weakmap-shim":1014}],205:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')

var pool = require('typedarray-pool')

var SHADERS = require('./lib/shader')

module.exports = createPointcloud2D

function Pointcloud2D(plot, offsetBuffer, pickBuffer, shader, pickShader) {
  this.plot           = plot
  this.offsetBuffer   = offsetBuffer
  this.pickBuffer     = pickBuffer
  this.shader         = shader
  this.pickShader     = pickShader
  this.sizeMin        = 0.5
  this.sizeMinCap     = 2
  this.sizeMax        = 20
  this.areaRatio      = 1.0
  this.pointCount     = 0
  this.color          = [1, 0, 0, 1]
  this.borderColor    = [0, 0, 0, 1]
  this.blend          = false
  this.pickOffset     = 0
  this.points         = null
}

var proto = Pointcloud2D.prototype

proto.dispose = function() {
  this.shader.dispose()
  this.pickShader.dispose()
  this.offsetBuffer.dispose()
  this.pickBuffer.dispose()
  this.plot.removeObject(this)
}

proto.update = function(options) {

  var i

  options = options || {}

  function dflt(opt, value) {
    if(opt in options) {
      return options[opt]
    }
    return value
  }

  this.sizeMin      = dflt('sizeMin', 0.5)
  this.sizeMax      = dflt('sizeMax', 20)
  this.color        = dflt('color', [1, 0, 0, 1]).slice()
  this.areaRatio    = dflt('areaRatio', 1)
  this.borderColor  = dflt('borderColor', [0, 0, 0, 1]).slice()
  this.blend        = dflt('blend', false)

  //Update point data

  // Attempt straight-through processing (STP) to avoid allocation and copy
  // TODO eventually abstract out STP logic, maybe into `pool` or a layer above
  var pointCount = options.positions.length >>> 1
  var dataStraightThrough = options.positions instanceof Float32Array
  var idStraightThrough = options.idToIndex instanceof Int32Array && options.idToIndex.length >= pointCount // permit larger to help reuse

  var data          = options.positions
  var packed        = dataStraightThrough ? data : pool.mallocFloat32(data.length)
  var packedId      = idStraightThrough ? options.idToIndex : pool.mallocInt32(pointCount)

  if(!dataStraightThrough) {
    packed.set(data)
  }

  if(!idStraightThrough) {
    packed.set(data)
    for(i = 0; i < pointCount; i++) {
      packedId[i] = i
    }
  }

  this.points       = data

  this.offsetBuffer.update(packed)
  this.pickBuffer.update(packedId)

  if(!dataStraightThrough) {
    pool.free(packed)
  }

  if(!idStraightThrough) {
    pool.free(packedId)
  }

  this.pointCount = pointCount
  this.pickOffset = 0
}

function count(points, dataBox) {
  var visiblePointCountEstimate = 0
  var length = points.length >>> 1
  var i
  for(i = 0; i < length; i++) {
    var x = points[i * 2]
    var y = points[i * 2 + 1]
    if(x >= dataBox[0] && x <= dataBox[2] && y >= dataBox[1] && y <= dataBox[3])
      visiblePointCountEstimate++
  }
  return visiblePointCountEstimate
}

proto.unifiedDraw = (function() {
  var MATRIX = [1, 0, 0,
                0, 1, 0,
                0, 0, 1]
  var PICK_VEC4 = [0, 0, 0, 0]
return function(pickOffset) {

  var pick = pickOffset !== void(0)

  var shader        = pick ? this.pickShader : this.shader
  var gl            = this.plot.gl
  var dataBox       = this.plot.dataBox

  if(this.pointCount === 0) {
    return pickOffset
  }

  var dataX   = dataBox[2] - dataBox[0]
  var dataY   = dataBox[3] - dataBox[1]

  var visiblePointCountEstimate = count(this.points, dataBox)
  var basicPointSize =  this.plot.pickPixelRatio * Math.max(Math.min(this.sizeMinCap, this.sizeMin), Math.min(this.sizeMax, this.sizeMax / Math.pow(visiblePointCountEstimate, 0.33333)))

  MATRIX[0] = 2.0 / dataX
  MATRIX[4] = 2.0 / dataY
  MATRIX[6] = -2.0 * dataBox[0] / dataX - 1.0
  MATRIX[7] = -2.0 * dataBox[1] / dataY - 1.0

  this.offsetBuffer.bind()

  shader.bind()
  shader.attributes.position.pointer()
  shader.uniforms.matrix      = MATRIX
  shader.uniforms.color       = this.color
  shader.uniforms.borderColor = this.borderColor
  shader.uniforms.pointCloud = basicPointSize < 5
  shader.uniforms.pointSize = basicPointSize
  shader.uniforms.centerFraction = Math.min(1, Math.max(0, Math.sqrt(1 - this.areaRatio)))

  if(pick) {

    PICK_VEC4[0] = ( pickOffset        & 0xff)
    PICK_VEC4[1] = ((pickOffset >> 8)  & 0xff)
    PICK_VEC4[2] = ((pickOffset >> 16) & 0xff)
    PICK_VEC4[3] = ((pickOffset >> 24) & 0xff)

    this.pickBuffer.bind()
    shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)
    shader.uniforms.pickOffset = PICK_VEC4
    this.pickOffset = pickOffset
  }

  // Worth switching these off, but we can't make assumptions about other
  // renderers, so let's restore it after each draw
  var blend = gl.getParameter(gl.BLEND)
  var dither = gl.getParameter(gl.DITHER)

  if(blend && !this.blend)
    gl.disable(gl.BLEND)
  if(dither)
    gl.disable(gl.DITHER)

  gl.drawArrays(gl.POINTS, 0, this.pointCount)

  if(blend && !this.blend)
    gl.enable(gl.BLEND)
  if(dither)
    gl.enable(gl.DITHER)

  return pickOffset + this.pointCount
}
})()

proto.draw = proto.unifiedDraw
proto.drawPick = proto.unifiedDraw

proto.pick = function(x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.pointCount
  if(value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var points = this.points
  return {
    object: this,
    pointId: pointId,
    dataCoord: [points[2 * pointId], points[2 * pointId + 1] ]
  }
}

function createPointcloud2D(plot, options) {
  var gl = plot.gl
  var buffer = createBuffer(gl)
  var pickBuffer = createBuffer(gl)
  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)

  var result = new Pointcloud2D(plot, buffer, pickBuffer, shader, pickShader)
  result.update(options)

  //Register with plot
  plot.addObject(result)

  return result
}

},{"./lib/shader":197,"gl-buffer":132,"gl-shader":198,"typedarray-pool":992}],206:[function(require,module,exports){
module.exports = slerp

/**
 * Performs a spherical linear interpolation between two quat
 *
 * @param {quat} out the receiving quaternion
 * @param {quat} a the first operand
 * @param {quat} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {quat} out
 */
function slerp (out, a, b, t) {
  // benchmarks:
  //    http://jsperf.com/quaternion-slerp-implementations

  var ax = a[0], ay = a[1], az = a[2], aw = a[3],
    bx = b[0], by = b[1], bz = b[2], bw = b[3]

  var omega, cosom, sinom, scale0, scale1

  // calc cosine
  cosom = ax * bx + ay * by + az * bz + aw * bw
  // adjust signs (if necessary)
  if (cosom < 0.0) {
    cosom = -cosom
    bx = -bx
    by = -by
    bz = -bz
    bw = -bw
  }
  // calculate coefficients
  if ((1.0 - cosom) > 0.000001) {
    // standard case (slerp)
    omega = Math.acos(cosom)
    sinom = Math.sin(omega)
    scale0 = Math.sin((1.0 - t) * omega) / sinom
    scale1 = Math.sin(t * omega) / sinom
  } else {
    // "from" and "to" quaternions are very close
    //  ... so we can do a linear interpolation
    scale0 = 1.0 - t
    scale1 = t
  }
  // calculate final values
  out[0] = scale0 * ax + scale1 * bx
  out[1] = scale0 * ay + scale1 * by
  out[2] = scale0 * az + scale1 * bz
  out[3] = scale0 * aw + scale1 * bw

  return out
}

},{}],207:[function(require,module,exports){
'use strict'



module.exports = {
  vertex:       "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi, positionLo;\nattribute vec2 offset;\nattribute vec4 color;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo, pixelScale;\n\nvarying vec4 fragColor;\n\n\nvec4 computePosition_1_0(vec2 posHi, vec2 posLo, vec2 scHi, vec2 scLo, vec2 trHi, vec2 trLo, vec2 screenScale, vec2 screenOffset) {\n  return vec4((posHi + trHi) * scHi\n            + (posLo + trLo) * scHi\n            + (posHi + trHi) * scLo\n            + (posLo + trLo) * scLo\n            + screenScale * screenOffset, 0, 1);\n}\n\nvoid main() {\n  fragColor = color;\n\n  gl_Position = computePosition_1_0(\n    positionHi, positionLo,\n    scaleHi, scaleLo,\n    translateHi, translateLo,\n    pixelScale, offset);\n}\n",
  fragment:     "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);\n}\n",
  pickVertex:   "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi, positionLo;\nattribute vec2 offset;\nattribute vec4 id;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo, pixelScale;\nuniform vec4 pickOffset;\n\nvarying vec4 fragColor;\n\n\nvec4 computePosition_1_0(vec2 posHi, vec2 posLo, vec2 scHi, vec2 scLo, vec2 trHi, vec2 trLo, vec2 screenScale, vec2 screenOffset) {\n  return vec4((posHi + trHi) * scHi\n            + (posLo + trLo) * scHi\n            + (posHi + trHi) * scLo\n            + (posLo + trLo) * scLo\n            + screenScale * screenOffset, 0, 1);\n}\n\nvoid main() {\n  vec4 fragId = id + pickOffset;\n\n  fragId.y += floor(fragId.x / 256.0);\n  fragId.x -= floor(fragId.x / 256.0) * 256.0;\n\n  fragId.z += floor(fragId.y / 256.0);\n  fragId.y -= floor(fragId.y / 256.0) * 256.0;\n\n  fragId.w += floor(fragId.z / 256.0);\n  fragId.z -= floor(fragId.z / 256.0) * 256.0;\n\n  fragColor = fragId / 255.0;\n\n  gl_Position = computePosition_1_0(\n    positionHi, positionLo,\n    scaleHi, scaleLo,\n    translateHi, translateLo,\n    pixelScale, offset);\n}\n",
  pickFragment: "precision lowp float;\n#define GLSLIFY 1\nvarying vec4 fragColor;\nvoid main() {\n  gl_FragColor = fragColor;\n}\n"
}

},{}],208:[function(require,module,exports){
arguments[4][187][0].apply(exports,arguments)
},{"./lib/GLError":209,"./lib/create-attributes":210,"./lib/create-uniforms":211,"./lib/reflect":212,"./lib/runtime-reflect":213,"./lib/shader-cache":214,"dup":187}],209:[function(require,module,exports){
arguments[4][188][0].apply(exports,arguments)
},{"dup":188}],210:[function(require,module,exports){
arguments[4][189][0].apply(exports,arguments)
},{"./GLError":209,"dup":189}],211:[function(require,module,exports){
arguments[4][190][0].apply(exports,arguments)
},{"./GLError":209,"./reflect":212,"dup":190}],212:[function(require,module,exports){
arguments[4][191][0].apply(exports,arguments)
},{"dup":191}],213:[function(require,module,exports){
arguments[4][192][0].apply(exports,arguments)
},{"dup":192}],214:[function(require,module,exports){
arguments[4][193][0].apply(exports,arguments)
},{"./GLError":209,"dup":193,"gl-format-compiler-error":140,"weakmap-shim":1014}],215:[function(require,module,exports){
'use strict'

module.exports = createFancyScatter2D

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var textCache = require('text-cache')
var pool = require('typedarray-pool')
var vectorizeText = require('vectorize-text')
var shaders = require('./lib/shaders')

var BOUNDARIES = {}

function getBoundary(glyph) {
  if(glyph in BOUNDARIES) {
    return BOUNDARIES[glyph]
  }

  var polys = vectorizeText(glyph, {
    polygons: true,
    font: 'sans-serif',
    textAlign: 'left',
    textBaseline: 'alphabetic'
  })

  var coords  = []
  var normals = []

  polys.forEach(function(loops) {
    loops.forEach(function(loop) {
      for(var i=0; i < loop.length; ++i) {
        var a = loop[(i + loop.length - 1) % loop.length]
        var b = loop[i]
        var c = loop[(i + 1) % loop.length]
        var d = loop[(i + 2) % loop.length]

        var dx = b[0] - a[0]
        var dy = b[1] - a[1]
        var dl = Math.sqrt(dx * dx + dy * dy)
        dx /= dl
        dy /= dl

        coords.push(a[0], a[1] + 1.4)
        normals.push(dy, -dx)
        coords.push(a[0], a[1] + 1.4)
        normals.push(-dy, dx)
        coords.push(b[0], b[1] + 1.4)
        normals.push(-dy, dx)

        coords.push(b[0], b[1] + 1.4)
        normals.push(-dy, dx)
        coords.push(a[0], a[1] + 1.4)
        normals.push(dy, -dx)
        coords.push(b[0], b[1] + 1.4)
        normals.push(dy, -dx)

        var ex = d[0] - c[0]
        var ey = d[1] - c[1]
        var el = Math.sqrt(ex * ex + ey * ey)
        ex /= el
        ey /= el

        coords.push(b[0], b[1] + 1.4)
        normals.push(dy, -dx)
        coords.push(b[0], b[1] + 1.4)
        normals.push(-dy, dx)
        coords.push(c[0], c[1] + 1.4)
        normals.push(-ey, ex)

        coords.push(c[0], c[1] + 1.4)
        normals.push(-ey, ex)
        coords.push(b[0], b[1] + 1.4)
        normals.push(ey, -ex)
        coords.push(c[0], c[1] + 1.4)
        normals.push(ey, -ex)
      }
    })
  })

  var bounds = [Infinity, Infinity, -Infinity, -Infinity]
  for(var i = 0; i < coords.length; i += 2) {
    for(var j = 0; j < 2; ++j) {
      bounds[j]     = Math.min(bounds[j],     coords[i + j])
      bounds[2 + j] = Math.max(bounds[2 + j], coords[i + j])
    }
  }

  return BOUNDARIES[glyph] = {
    coords:  coords,
    normals: normals,
    bounds:  bounds
  }
}

function GLScatterFancy(
    plot,
    shader,
    pickShader,
    positionHiBuffer,
    positionLoBuffer,
    offsetBuffer,
    colorBuffer,
    idBuffer) {
  this.plot           = plot
  this.shader         = shader
  this.pickShader     = pickShader
  this.posHiBuffer    = positionHiBuffer
  this.posLoBuffer    = positionLoBuffer
  this.offsetBuffer   = offsetBuffer
  this.colorBuffer    = colorBuffer
  this.idBuffer       = idBuffer
  this.bounds         = [Infinity, Infinity, -Infinity, -Infinity]
  this.numPoints      = 0
  this.numVertices    = 0
  this.pickOffset     = 0
  this.points         = null
}

var proto = GLScatterFancy.prototype

;(function() {
  var SCALE_HI = new Float32Array([0, 0])
  var SCALE_LO = new Float32Array([0, 0])
  var TRANSLATE_HI = new Float32Array([0, 0])
  var TRANSLATE_LO = new Float32Array([0, 0])

  var PIXEL_SCALE = [0, 0]

  function calcScales() {
    var plot       = this.plot
    var bounds     = this.bounds
    var viewBox    = plot.viewBox
    var dataBox    = plot.dataBox
    var pixelRatio = plot.pixelRatio

    var boundX = bounds[2] - bounds[0]
    var boundY = bounds[3] - bounds[1]
    var dataX  = dataBox[2] - dataBox[0]
    var dataY  = dataBox[3] - dataBox[1]

    var scaleX = 2 * boundX / dataX
    var scaleY = 2 * boundY / dataY
    var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
    var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

    SCALE_HI[0] = scaleX
    SCALE_LO[0] = scaleX - SCALE_HI[0]
    SCALE_HI[1] = scaleY
    SCALE_LO[1] = scaleY - SCALE_HI[1]

    TRANSLATE_HI[0] = translateX
    TRANSLATE_LO[0] = translateX - TRANSLATE_HI[0]
    TRANSLATE_HI[1] = translateY
    TRANSLATE_LO[1] = translateY - TRANSLATE_HI[1]

    var screenX = viewBox[2] - viewBox[0]
    var screenY = viewBox[3] - viewBox[1]

    PIXEL_SCALE[0] = 2 * pixelRatio / screenX
    PIXEL_SCALE[1] = 2 * pixelRatio / screenY
  }

  var PICK_OFFSET = [0, 0, 0, 0]

  proto.drawPick = function(offset) {

    var pick = offset !== undefined
    var plot = this.plot

    var numVertices = this.numVertices

    if(!numVertices) {
      return offset
    }

    calcScales.call(this)

    var gl = plot.gl
    var shader = pick ? this.pickShader : this.shader

    shader.bind()

    if(pick) {

      this.pickOffset = offset

      for (var i = 0; i < 4; ++i) {
        PICK_OFFSET[i] = (offset >> (i * 8)) & 0xff
      }

      shader.uniforms.pickOffset = PICK_OFFSET

      this.idBuffer.bind()
      shader.attributes.id.pointer(gl.UNSIGNED_BYTE, false)

    } else {

      this.colorBuffer.bind()
      shader.attributes.color.pointer(gl.UNSIGNED_BYTE, true)

    }

    this.posHiBuffer.bind()
    shader.attributes.positionHi.pointer()

    this.posLoBuffer.bind()
    shader.attributes.positionLo.pointer()

    this.offsetBuffer.bind()
    shader.attributes.offset.pointer()

    shader.uniforms.pixelScale  = PIXEL_SCALE
    shader.uniforms.scaleHi     = SCALE_HI
    shader.uniforms.scaleLo     = SCALE_LO
    shader.uniforms.translateHi = TRANSLATE_HI
    shader.uniforms.translateLo = TRANSLATE_LO

    gl.drawArrays(gl.TRIANGLES, 0, numVertices)

    if(pick) return offset + this.numPoints
  }
})()

proto.draw = proto.drawPick

proto.pick = function(x, y, value) {
  var pickOffset = this.pickOffset
  var pointCount = this.numPoints
  if(value < pickOffset || value >= pickOffset + pointCount) {
    return null
  }
  var pointId = value - pickOffset
  var points  = this.points
  return {
    object:    this,
    pointId:   pointId,
    dataCoord: [points[2 * pointId], points[2 * pointId + 1]]
  }
}

proto.update = function(options) {
  options = options || {}

  var positions     = options.positions    || []
  var colors        = options.colors       || []
  var glyphs        = options.glyphs       || []
  var sizes         = options.sizes        || []
  var borderWidths  = options.borderWidths || []
  var borderColors  = options.borderColors || []
  var i, j

  this.points = positions

  var bounds = this.bounds = [Infinity, Infinity, -Infinity, -Infinity]
  var numVertices = 0

  var glyphMeshes = []
  var glyphBoundaries = []
  var glyph, border

  for(i = 0; i < glyphs.length; ++i) {
    glyph = textCache('sans-serif', glyphs[i])
    border = getBoundary(glyphs[i])
    glyphMeshes.push(glyph)
    glyphBoundaries.push(border)
    numVertices += (glyph.data.length + border.coords.length) >> 1
    for(j = 0; j < 2; ++j) {
      bounds[j]     = Math.min(bounds[j],     positions[2 * i + j])
      bounds[2 + j] = Math.max(bounds[2 + j], positions[2 * i + j])
    }
  }

  if(bounds[0] === bounds[2]) {
    bounds[2] += 1
  }
  if(bounds[3] === bounds[1]) {
    bounds[3] += 1
  }

  var sx = 1 / (bounds[2] - bounds[0])
  var sy = 1 / (bounds[3] - bounds[1])
  var tx = bounds[0]
  var ty = bounds[1]

  var v_position = pool.mallocFloat64(2 * numVertices)
  var v_posHi    = pool.mallocFloat32(2 * numVertices)
  var v_posLo    = pool.mallocFloat32(2 * numVertices)
  var v_offset   = pool.mallocFloat32(2 * numVertices)
  var v_color    = pool.mallocUint8(4 * numVertices)
  var v_ids      = pool.mallocUint32(numVertices)
  var ptr = 0

  for(i = 0; i < glyphs.length; ++i) {
    glyph = glyphMeshes[i]
    border = glyphBoundaries[i]
    var x = sx * (positions[2 * i]     - tx)
    var y = sy * (positions[2 * i + 1] - ty)
    var s = sizes[i]
    var r = colors[4 * i]     * 255
    var g = colors[4 * i + 1] * 255
    var b = colors[4 * i + 2] * 255
    var a = colors[4 * i + 3] * 255

    var gx = 0.5 * (border.bounds[0] + border.bounds[2])
    var gy = 0.5 * (border.bounds[1] + border.bounds[3])

    for(j = 0; j < glyph.data.length; j += 2) {
      v_position[2 * ptr]     = x
      v_position[2 * ptr + 1] = y
      v_offset[2 * ptr]       = -s * (glyph.data[j] - gx)
      v_offset[2 * ptr + 1]   = -s * (glyph.data[j + 1] - gy)
      v_color[4 * ptr]        = r
      v_color[4 * ptr + 1]    = g
      v_color[4 * ptr + 2]    = b
      v_color[4 * ptr + 3]    = a
      v_ids[ptr]              = i

      ptr += 1
    }

    var w = borderWidths[i]
    r = borderColors[4 * i]     * 255
    g = borderColors[4 * i + 1] * 255
    b = borderColors[4 * i + 2] * 255
    a = borderColors[4 * i + 3] * 255

    for(j = 0; j < border.coords.length; j += 2) {
      v_position[2 * ptr]     = x
      v_position[2 * ptr + 1] = y
      v_offset[2 * ptr]       = - (s * (border.coords[j] - gx)     + w * border.normals[j])
      v_offset[2 * ptr + 1]   = - (s * (border.coords[j + 1] - gy) + w * border.normals[j + 1])
      v_color[4 * ptr]        = r
      v_color[4 * ptr + 1]    = g
      v_color[4 * ptr + 2]    = b
      v_color[4 * ptr + 3]    = a
      v_ids[ptr]              = i

      ptr += 1
    }
  }

  this.numPoints = glyphs.length
  this.numVertices = numVertices

  v_posHi.set(v_position)
  for(i = 0; i < v_position.length; i++)
    v_posLo[i] = v_position[i] - v_posHi[i]

  this.posHiBuffer.update(v_posHi)
  this.posLoBuffer.update(v_posLo)
  this.offsetBuffer.update(v_offset)
  this.colorBuffer.update(v_color)
  this.idBuffer.update(v_ids)

  pool.free(v_position)
  pool.free(v_posHi)
  pool.free(v_posLo)
  pool.free(v_offset)
  pool.free(v_color)
  pool.free(v_ids)
}

proto.dispose = function() {
  this.shader.dispose()
  this.pickShader.dispose()
  this.posHiBuffer.dispose()
  this.posLoBuffer.dispose()
  this.offsetBuffer.dispose()
  this.colorBuffer.dispose()
  this.idBuffer.dispose()
  this.plot.removeObject(this)
}

function createFancyScatter2D(plot, options) {
  var gl = plot.gl

  var shader     = createShader(gl, shaders.vertex,     shaders.fragment)
  var pickShader = createShader(gl, shaders.pickVertex, shaders.pickFragment)

  var positionHiBuffer = createBuffer(gl)
  var positionLoBuffer = createBuffer(gl)
  var offsetBuffer     = createBuffer(gl)
  var colorBuffer      = createBuffer(gl)
  var idBuffer         = createBuffer(gl)

  var scatter = new GLScatterFancy(
    plot,
    shader,
    pickShader,
    positionHiBuffer,
    positionLoBuffer,
    offsetBuffer,
    colorBuffer,
    idBuffer)

  scatter.update(options)

  plot.addObject(scatter)

  return scatter
}
},{"./lib/shaders":207,"gl-buffer":132,"gl-shader":208,"text-cache":983,"typedarray-pool":992,"vectorize-text":1006}],216:[function(require,module,exports){


exports.pointVertex       = "precision highp float;\n#define GLSLIFY 1\n\nattribute vec2 positionHi, positionLo;\nattribute float weight;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo;\nuniform float pointSize, useWeight;\n\nvarying float fragWeight;\n\n\nvec4 pfx_1_0(vec2 scaleHi, vec2 scaleLo, vec2 translateHi, vec2 translateLo, vec2 positionHi, vec2 positionLo) {\n  return vec4((positionHi + translateHi) * scaleHi\n            + (positionLo + translateLo) * scaleHi\n            + (positionHi + translateHi) * scaleLo\n            + (positionLo + translateLo) * scaleLo, 0.0, 1.0);\n}\n\nvoid main() {\n  gl_Position = pfx_1_0(scaleHi, scaleLo, translateHi, translateLo, positionHi, positionLo);\n  gl_PointSize = pointSize;\n  fragWeight = mix(1.0, weight, useWeight);\n}"
exports.pointFragment     = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color, borderColor;\nuniform float centerFraction;\n\nvarying float fragWeight;\n\nfloat smoothStep(float x, float y) {\n  return 1.0 / (1.0 + exp(50.0*(x - y)));\n}\n\nvoid main() {\n  float radius = length(2.0*gl_PointCoord.xy-1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  vec4 baseColor = mix(borderColor, color, smoothStep(radius, centerFraction));\n  float alpha = 1.0 - pow(1.0 - baseColor.a, fragWeight);\n  gl_FragColor = vec4(baseColor.rgb * alpha, alpha);\n}"
exports.pickVertex        = "precision highp float;\n#define GLSLIFY 1\n\nvec4 pfx_1_0(vec2 scaleHi, vec2 scaleLo, vec2 translateHi, vec2 translateLo, vec2 positionHi, vec2 positionLo) {\n  return vec4((positionHi + translateHi) * scaleHi\n            + (positionLo + translateLo) * scaleHi\n            + (positionHi + translateHi) * scaleLo\n            + (positionLo + translateLo) * scaleLo, 0.0, 1.0);\n}\n\nattribute vec2 positionHi, positionLo;\nattribute vec4 pickId;\n\nuniform vec2 scaleHi, scaleLo, translateHi, translateLo;\nuniform float pointSize;\nuniform vec4 pickOffset;\n\nvarying vec4 fragId;\n\nvoid main() {\n\n  vec4 id = pickId + pickOffset;\n  id.y += floor(id.x / 256.0);\n  id.x -= floor(id.x / 256.0) * 256.0;\n\n  id.z += floor(id.y / 256.0);\n  id.y -= floor(id.y / 256.0) * 256.0;\n\n  id.w += floor(id.z / 256.0);\n  id.z -= floor(id.z / 256.0) * 256.0;\n\n  gl_Position = pfx_1_0(scaleHi, scaleLo, translateHi, translateLo, positionHi, positionLo);\n  gl_PointSize = pointSize;\n  fragId = id;\n}"
exports.pickFragment      = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragId;\n\nvoid main() {\n  float radius = length(2.0 * gl_PointCoord.xy - 1.0);\n  if(radius > 1.0) {\n    discard;\n  }\n  gl_FragColor = fragId / 255.0;\n}"
},{}],217:[function(require,module,exports){
arguments[4][54][0].apply(exports,arguments)
},{"dup":54}],218:[function(require,module,exports){
'use strict'

module.exports = sortLevels

var INSERT_SORT_CUTOFF = 32

function sortLevels(data_levels, data_points, data_ids, data_weights, n0) {
  if (n0 <= 4*INSERT_SORT_CUTOFF) {
    insertionSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(0, n0 - 1, data_levels, data_points, data_ids, data_weights)
  }
}

function insertionSort(left, right, data_levels, data_points, data_ids, data_weights) {
  for(var i=left+1; i<=right; ++i) {
    var a_level  = data_levels[i]
    var a_x      = data_points[2*i]
    var a_y      = data_points[2*i+1]
    var a_id     = data_ids[i]
    var a_weight = data_weights[i]

    var j = i
    while(j > left) {
      var b_level = data_levels[j-1]
      var b_x     = data_points[2*(j-1)]
      if(((b_level - a_level) || (a_x - b_x)) >= 0) {
        break
      }
      data_levels[j]      = b_level
      data_points[2*j]    = b_x
      data_points[2*j+1]  = data_points[2*j-1]
      data_ids[j]         = data_ids[j-1]
      data_weights[j]     = data_weights[j-1]
      j -= 1
    }

    data_levels[j]     = a_level
    data_points[2*j]   = a_x
    data_points[2*j+1] = a_y
    data_ids[j]        = a_id
    data_weights[j]    = a_weight
  }
}

function swap(i, j, data_levels, data_points, data_ids, data_weights) {
  var a_level = data_levels[i]
  var a_x     = data_points[2*i]
  var a_y     = data_points[2*i+1]
  var a_id    = data_ids[i]
  var a_weight = data_weights[i]

  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]

  data_levels[j]     = a_level
  data_points[2*j]   = a_x
  data_points[2*j+1] = a_y
  data_ids[j]        = a_id
  data_weights[j]    = a_weight
}

function move(i, j, data_levels, data_points, data_ids, data_weights) {
  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]
}

function rotate(i, j, k, data_levels, data_points, data_ids, data_weights) {
  var a_level = data_levels[i]
  var a_x     = data_points[2*i]
  var a_y     = data_points[2*i+1]
  var a_id    = data_ids[i]
  var a_weight = data_weights[i]

  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]

  data_levels[j]     = data_levels[k]
  data_points[2*j]   = data_points[2*k]
  data_points[2*j+1] = data_points[2*k+1]
  data_ids[j]        = data_ids[k]
  data_weights[j]    = data_weights[k]

  data_levels[k]     = a_level
  data_points[2*k]   = a_x
  data_points[2*k+1] = a_y
  data_ids[k]        = a_id
  data_weights[k]    = a_weight
}

function shufflePivot(
  i, j,
  a_level, a_x, a_y, a_id, a_weight,
  data_levels, data_points, data_ids, data_weights) {

  data_levels[i]     = data_levels[j]
  data_points[2*i]   = data_points[2*j]
  data_points[2*i+1] = data_points[2*j+1]
  data_ids[i]        = data_ids[j]
  data_weights[i]    = data_weights[j]

  data_levels[j]     = a_level
  data_points[2*j]   = a_x
  data_points[2*j+1] = a_y
  data_ids[j]        = a_id
  data_weights[j]    = a_weight
}

function compare(i, j, data_levels, data_points, data_ids) {
  return ((data_levels[i] - data_levels[j]) ||
          (data_points[2*j] - data_points[2*i]) ||
          (data_ids[i] - data_ids[j])) < 0
}

function comparePivot(i, level, x, y, id, data_levels, data_points, data_ids) {
  return ((level - data_levels[i]) ||
          (data_points[2*i] - x) ||
          (id - data_ids[i])) < 0
}

function quickSort(left, right, data_levels, data_points, data_ids, data_weights) {
  var sixth = (right - left + 1) / 6 | 0,
      index1 = left + sixth,
      index5 = right - sixth,
      index3 = left + right >> 1,
      index2 = index3 - sixth,
      index4 = index3 + sixth,
      el1 = index1,
      el2 = index2,
      el3 = index3,
      el4 = index4,
      el5 = index5,
      less = left + 1,
      great = right - 1,
      tmp = 0
  if(compare(el1, el2, data_levels, data_points, data_ids, data_weights)) {
    tmp = el1
    el1 = el2
    el2 = tmp
  }
  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }
  if(compare(el1, el3, data_levels, data_points, data_ids, data_weights)) {
    tmp = el1
    el1 = el3
    el3 = tmp
  }
  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el1, el4, data_levels, data_points, data_ids, data_weights)) {
    tmp = el1
    el1 = el4
    el4 = tmp
  }
  if(compare(el3, el4, data_levels, data_points, data_ids, data_weights)) {
    tmp = el3
    el3 = el4
    el4 = tmp
  }
  if(compare(el2, el5, data_levels, data_points, data_ids, data_weights)) {
    tmp = el2
    el2 = el5
    el5 = tmp
  }
  if(compare(el2, el3, data_levels, data_points, data_ids, data_weights)) {
    tmp = el2
    el2 = el3
    el3 = tmp
  }
  if(compare(el4, el5, data_levels, data_points, data_ids, data_weights)) {
    tmp = el4
    el4 = el5
    el5 = tmp
  }

  var pivot1_level  = data_levels[el2]
  var pivot1_x      = data_points[2*el2]
  var pivot1_y      = data_points[2*el2+1]
  var pivot1_id     = data_ids[el2]
  var pivot1_weight = data_weights[el2]

  var pivot2_level  = data_levels[el4]
  var pivot2_x      = data_points[2*el4]
  var pivot2_y      = data_points[2*el4+1]
  var pivot2_id     = data_ids[el4]
  var pivot2_weight = data_weights[el4]

  var ptr0 = el1
  var ptr2 = el3
  var ptr4 = el5
  var ptr5 = index1
  var ptr6 = index3
  var ptr7 = index5

  var level_x = data_levels[ptr0]
  var level_y = data_levels[ptr2]
  var level_z = data_levels[ptr4]
  data_levels[ptr5] = level_x
  data_levels[ptr6] = level_y
  data_levels[ptr7] = level_z

  for (var i1 = 0; i1 < 2; ++i1) {
    var x = data_points[2*ptr0+i1]
    var y = data_points[2*ptr2+i1]
    var z = data_points[2*ptr4+i1]
    data_points[2*ptr5+i1] = x
    data_points[2*ptr6+i1] = y
    data_points[2*ptr7+i1] = z
  }

  var id_x = data_ids[ptr0]
  var id_y = data_ids[ptr2]
  var id_z = data_ids[ptr4]
  data_ids[ptr5] = id_x
  data_ids[ptr6] = id_y
  data_ids[ptr7] = id_z

  var weight_x = data_weights[ptr0]
  var weight_y = data_weights[ptr2]
  var weight_z = data_weights[ptr4]
  data_weights[ptr5] = weight_x
  data_weights[ptr6] = weight_y
  data_weights[ptr7] = weight_z

  move(index2, left,  data_levels, data_points, data_ids, data_weights)
  move(index4, right, data_levels, data_points, data_ids, data_weights)
  for (var k = less; k <= great; ++k) {
    if (comparePivot(k,
        pivot1_level, pivot1_x, pivot1_y, pivot1_id,
        data_levels, data_points, data_ids)) {
      if (k !== less) {
        swap(k, less, data_levels, data_points, data_ids, data_weights)
      }
      ++less;
    } else {
      if (!comparePivot(k,
          pivot2_level, pivot2_x, pivot2_y, pivot2_id,
          data_levels, data_points, data_ids)) {
        while (true) {
          if (!comparePivot(great,
              pivot2_level, pivot2_x, pivot2_y, pivot2_id,
              data_levels, data_points, data_ids)) {
            if (--great < k) {
              break;
            }
            continue;
          } else {
            if (comparePivot(great,
                pivot1_level, pivot1_x, pivot1_y, pivot1_id,
                data_levels, data_points, data_ids)) {
              rotate(k, less, great, data_levels, data_points, data_ids, data_weights)
              ++less;
              --great;
            } else {
              swap(k, great, data_levels, data_points, data_ids, data_weights)
              --great;
            }
            break;
          }
        }
      }
    }
  }
  shufflePivot(left, less-1, pivot1_level, pivot1_x, pivot1_y, pivot1_id, pivot1_weight, data_levels, data_points, data_ids, data_weights)
  shufflePivot(right, great+1, pivot2_level, pivot2_x, pivot2_y, pivot2_id, pivot2_weight, data_levels, data_points, data_ids, data_weights)
  if (less - 2 - left <= INSERT_SORT_CUTOFF) {
    insertionSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(left, less - 2, data_levels, data_points, data_ids, data_weights)
  }
  if (right - (great + 2) <= INSERT_SORT_CUTOFF) {
    insertionSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(great + 2, right, data_levels, data_points, data_ids, data_weights)
  }
  if (great - less <= INSERT_SORT_CUTOFF) {
    insertionSort(less, great, data_levels, data_points, data_ids, data_weights)
  } else {
    quickSort(less, great, data_levels, data_points, data_ids, data_weights)
  }
}

},{}],219:[function(require,module,exports){
'use strict'

var pool = require('typedarray-pool')

var sortLevels = require('./lib/sort')

module.exports = snapPoints

function partition(points, ids, start, end, lox, loy, hix, hiy) {
  var mid = start
  for(var i=start; i<end; ++i) {
    var x  = points[2*i]
    var y  = points[2*i+1]
    var s  = ids[i]
    if(lox <= x && x <= hix &&
       loy <= y && y <= hiy) {
      if(i === mid) {
        mid += 1
      } else {
        points[2*i]     = points[2*mid]
        points[2*i+1]   = points[2*mid+1]
        ids[i]          = ids[mid]
        points[2*mid]   = x
        points[2*mid+1] = y
        ids[mid]        = s
        mid += 1
      }
    }
  }
  return mid
}

function SnapInterval(pixelSize, offset, count) {
  this.pixelSize  = pixelSize
  this.offset     = offset
  this.count      = count
}

function snapPoints(points, ids, weights, bounds) {
  var n    = points.length >>> 1
  if(n < 1) {
    return []
  }

  var lox =  Infinity, loy =  Infinity
  var hix = -Infinity, hiy = -Infinity
  for(var i=0; i<n; ++i) {
    var x = points[2*i]
    var y = points[2*i+1]
    lox = Math.min(lox, x)
    hix = Math.max(hix, x)
    loy = Math.min(loy, y)
    hiy = Math.max(hiy, y)
    ids[i] = i
  }

  if(lox === hix) {
    hix += 1 + Math.abs(hix)
  }
  if(loy === hiy) {
    hiy += 1 + Math.abs(hix)
  }

  //Calculate diameter
  var scaleX = 1.0 / (hix - lox)
  var scaleY = 1.0 / (hiy - loy)
  var diam = Math.max(hix - lox, hiy - loy)

  bounds = bounds || [0,0,0,0]

  bounds[0] = lox
  bounds[1] = loy
  bounds[2] = hix
  bounds[3] = hiy

  var levels = pool.mallocInt32(n)
  var ptr = 0

  function snapRec(x, y, diam, start, end, level) {
    var diam_2 = diam * 0.5
    var offset = start + 1
    var count = end - start
    weights[ptr] = count
    levels[ptr++] = level
    for(var i=0; i<2; ++i) {
      for(var j=0; j<2; ++j) {
        var nx = x+i*diam_2
        var ny = y+j*diam_2
        var nextOffset = partition(
            points
          , ids
          , offset
          , end
          , nx, ny
          , nx+diam_2, ny+diam_2)
        if(nextOffset === offset) {
          continue
        }
        if(nextOffset - offset >= Math.max(0.9 * count, 32)) {
          var mid = (end + start)>>>1
          snapRec(nx, ny, diam_2, offset, mid, level+1)
          offset = mid
        }
        snapRec(nx, ny, diam_2, offset, nextOffset, level+1)
        offset = nextOffset
      }
    }
  }
  snapRec(lox, loy, diam, 0, n, 0)
  sortLevels(levels, points, ids, weights, n)

  var lod         = []
  var lastLevel   = 0
  var prevOffset  = n
  for(var ptr=n-1; ptr>=0; --ptr) {
    points[2*ptr]   = (points[2*ptr]   - lox) * scaleX
    points[2*ptr+1] = (points[2*ptr+1] - loy) * scaleY

    var level = levels[ptr]
    if(level === lastLevel) {
      continue
    }

    lod.push(new SnapInterval(
      diam * Math.pow(0.5, level),
      ptr+1,
      prevOffset - (ptr+1)
    ))
    prevOffset = ptr+1

    lastLevel = level
  }

  lod.push(new SnapInterval(diam * Math.pow(0.5, level+1), 0, prevOffset))
  pool.free(levels)

  return lod
}

},{"./lib/sort":218,"typedarray-pool":992}],220:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')
var search = require('binary-search-bounds')
var snapPoints = require('snap-points-2d')
var pool = require('typedarray-pool')
var SHADERS = require('./lib/shader')

module.exports = createScatter2D

function Scatter2D(plot, positionBufferHi, positionBufferLo, pickBuffer, weightBuffer, shader, pickShader) {
  this.plot             = plot
  this.positionBufferHi = positionBufferHi
  this.positionBufferLo = positionBufferLo
  this.pickBuffer       = pickBuffer
  this.weightBuffer     = weightBuffer
  this.shader           = shader
  this.pickShader       = pickShader
  this.scales           = []
  this.size             = 12.0
  this.borderSize       = 1.0
  this.pointCount       = 0
  this.color            = [1, 0, 0, 1]
  this.borderColor      = [0, 0, 0, 1]
  this.bounds           = [Infinity, Infinity, -Infinity, -Infinity]
  this.pickOffset       = 0
  this.points           = null
  this.xCoords          = null
}

var proto = Scatter2D.prototype
var scaleHi = new Float32Array(2)
var scaleLo = new Float32Array(2)
var translateHi = new Float32Array(2)
var translateLo = new Float32Array(2)
var PICK_VEC4 = [0, 0, 0, 0]

proto.dispose = function() {
  this.shader.dispose()
  this.pickShader.dispose()
  this.positionBufferHi.dispose()
  this.positionBufferLo.dispose()
  this.pickBuffer.dispose()
  if(this.xCoords) pool.free(this.xCoords)
  this.plot.removeObject(this)
}

proto.update = function(options) {
  options = options || {}

  function dflt(opt, value) {
    return opt in options ? options[opt] : value
  }

  this.size         = dflt('size', 12)
  this.color        = dflt('color', [1, 0, 0, 1]).slice()
  this.borderSize   = dflt('borderSize', 1)
  this.borderColor  = dflt('borderColor', [0, 0, 0, 1]).slice()

  if(this.xCoords) pool.free(this.xCoords)

  this.points             = options.positions
  var pointCount          = this.points.length >>> 1
  var packedId            = pool.mallocInt32(pointCount)
  var packedW             = pool.mallocFloat32(2 * pointCount)
  var packed              = pool.mallocFloat64(2 * pointCount)
  packed.set(this.points)
  this.scales             = snapPoints(packed, packedId, packedW, this.bounds)

  var xCoords             = pool.mallocFloat64(pointCount)
  var packedHi            = pool.mallocFloat32(2 * pointCount)
  var packedLo            = pool.mallocFloat32(2 * pointCount)
  packedHi.set(packed)
  for(var i = 0, j = 0; i < pointCount; i++, j += 2) {
    packedLo[j] = packed[j] - packedHi[j]
    packedLo[j + 1] = packed[j + 1] - packedHi[j + 1]
    xCoords[i] = packed[j]
  }
  this.positionBufferHi.update(packedHi)
  this.positionBufferLo.update(packedLo)
  this.pickBuffer.update(packedId)
  this.weightBuffer.update(packedW)

  pool.free(packedId)
  pool.free(packed)
  pool.free(packedHi)
  pool.free(packedLo)
  pool.free(packedW)

  this.xCoords = xCoords
  this.pointCount = pointCount
  this.pickOffset = 0
}

proto.draw = function(pickOffset) {

  var pick = pickOffset !== void(0)

  var plot             = this.plot
  var shader           = pick ? this.pickShader : this.shader
  var scales           = this.scales
  var positionBufferHi = this.positionBufferHi
  var positionBufferLo = this.positionBufferLo
  var pickBuffer       = this.pickBuffer
  var bounds           = this.bounds
  var size             = this.size
  var borderSize       = this.borderSize
  var gl               = plot.gl
  var pixelRatio       = pick ? plot.pickPixelRatio : plot.pixelRatio
  var viewBox          = plot.viewBox
  var dataBox          = plot.dataBox

  if(this.pointCount === 0)
    return pickOffset

  var boundX  = bounds[2] - bounds[0]
  var boundY  = bounds[3] - bounds[1]
  var dataX   = dataBox[2] - dataBox[0]
  var dataY   = dataBox[3] - dataBox[1]
  var screenX = (viewBox[2] - viewBox[0]) * pixelRatio / plot.pixelRatio
  var screenY = (viewBox[3] - viewBox[1]) * pixelRatio / plot.pixelRatio

  var pixelSize   = Math.min(dataX / screenX, dataY / screenY)

  var scaleX = 2 * boundX / dataX
  var scaleY = 2 * boundY / dataY

  scaleHi[0] = scaleX
  scaleHi[1] = scaleY

  scaleLo[0] = scaleX - scaleHi[0]
  scaleLo[1] = scaleY - scaleHi[1]

  var translateX = (bounds[0] - dataBox[0] - 0.5 * dataX) / boundX
  var translateY = (bounds[1] - dataBox[1] - 0.5 * dataY) / boundY

  translateHi[0] = translateX
  translateHi[1] = translateY

  translateLo[0] = translateX - translateHi[0]
  translateLo[1] = translateY - translateHi[1]

  shader.bind()
  shader.uniforms.scaleHi     = scaleHi
  shader.uniforms.scaleLo     = scaleLo
  shader.uniforms.translateHi = translateHi
  shader.uniforms.translateLo = translateLo
  shader.uniforms.color       = this.color
  shader.uniforms.borderColor = this.borderColor
  shader.uniforms.pointSize   = pixelRatio * (size + borderSize)
  shader.uniforms.centerFraction = this.borderSize === 0 ? 2 : size / (size + borderSize + 1.25)

  positionBufferHi.bind()
  shader.attributes.positionHi.pointer()

  positionBufferLo.bind()
  shader.attributes.positionLo.pointer()

  if(pick) {

    this.pickOffset = pickOffset
    PICK_VEC4[0] = ( pickOffset        & 0xff)
    PICK_VEC4[1] = ((pickOffset >> 8)  & 0xff)
    PICK_VEC4[2] = ((pickOffset >> 16) & 0xff)
    PICK_VEC4[3] = ((pickOffset >> 24) & 0xff)
    shader.uniforms.pickOffset = PICK_VEC4

    pickBuffer.bind()
    shader.attributes.pickId.pointer(gl.UNSIGNED_BYTE)

  } else {

    shader.uniforms.useWeight = 1
    this.weightBuffer.bind()
    shader.attributes.weight.pointer()

  }

  var xCoords = this.xCoords
  var xStart = (dataBox[0] - bounds[0] - pixelSize * size * pixelRatio) / boundX
  var xEnd   = (dataBox[2] - bounds[0] + pixelSize * size * pixelRatio) / boundX

  var firstLevel = true

  for(var scaleNum = scales.length - 1; scaleNum >= 0; scaleNum--) {
    var lod = scales[scaleNum]
    if(lod.pixelSize < pixelSize && scaleNum > 1)
      continue

    var intervalStart = lod.offset
    var intervalEnd   = lod.count + intervalStart

    var startOffset = search.ge(xCoords, xStart, intervalStart, intervalEnd - 1)
    var endOffset   = search.lt(xCoords, xEnd, startOffset, intervalEnd - 1) + 1

    if(endOffset > startOffset)
      gl.drawArrays(gl.POINTS, startOffset, endOffset - startOffset)

    if(!pick && firstLevel) {
      firstLevel = false
      shader.uniforms.useWeight = 0
    }
  }

  return pickOffset + this.pointCount
}

proto.drawPick = proto.draw

proto.pick = function(x, y, value) {
  var pointId = value - this.pickOffset
  return pointId < 0 || pointId >= this.pointCount
    ? null : {
    object:  this,
    pointId: pointId,
    dataCoord: [ this.points[2 * pointId], this.points[2 * pointId + 1] ]
  }
}

function createScatter2D(plot, options) {
  var gl = plot.gl
  var positionBufferHi = createBuffer(gl)
  var positionBufferLo = createBuffer(gl)
  var pickBuffer = createBuffer(gl)
  var weightBuffer = createBuffer(gl)
  var shader = createShader(gl, SHADERS.pointVertex, SHADERS.pointFragment)
  var pickShader = createShader(gl, SHADERS.pickVertex, SHADERS.pickFragment)

  var result = new Scatter2D(plot, positionBufferHi, positionBufferLo, pickBuffer, weightBuffer, shader, pickShader)
  result.update(options)

  plot.addObject(result) // register with plot

  return result
}
},{"./lib/shader":216,"binary-search-bounds":217,"gl-buffer":132,"gl-shader":227,"snap-points-2d":219,"typedarray-pool":992}],221:[function(require,module,exports){
"use strict"

var vectorizeText = require("vectorize-text")

module.exports = getGlyph

var GLYPH_CACHE = {}

function getGlyph(symbol, font) {
  var fontCache = GLYPH_CACHE[font]
  if(!fontCache) {
    fontCache = GLYPH_CACHE[font] = {}
  }
  if(symbol in fontCache) {
    return fontCache[symbol]
  }

  //Get line and triangle meshes for glyph
  var lineSymbol = vectorizeText(symbol, {
      textAlign: "center",
      textBaseline: "middle",
      lineHeight: 1.0,
      font: font
    }) 
  var triSymbol = vectorizeText(symbol, {
      triangles: true,
      textAlign: "center",
      textBaseline: "middle",
      lineHeight: 1.0,
      font: font
    })

  //Calculate bounding box
  var bounds = [[Infinity,Infinity], [-Infinity,-Infinity]]
  for(var i=0; i<lineSymbol.positions.length; ++i) {
    var p = lineSymbol.positions[i]
    for(var j=0; j<2; ++j) {
      bounds[0][j] = Math.min(bounds[0][j], p[j])
      bounds[1][j] = Math.max(bounds[1][j], p[j])
    }
  }

  //Save cached symbol
  return fontCache[symbol] = [triSymbol, lineSymbol, bounds]
}
},{"vectorize-text":1006}],222:[function(require,module,exports){
var createShaderWrapper = require('gl-shader')


var perspectiveVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\n\nuniform vec4 highlightId;\nuniform float highlightScale;\nuniform mat4 model, view, projection;\nuniform vec3 clipBounds[2];\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   || \n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = 1.0;\n    if(distance(highlightId, id) < 0.0001) {\n      scale = highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1);\n    vec4 viewPosition = view * worldPosition;\n    viewPosition = viewPosition / viewPosition.w;\n    vec4 clipPosition = projection * (viewPosition + scale * vec4(glyph.x, -glyph.y, 0, 0));\n    \n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
var orthographicVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float highlightScale, pixelRatio;\nuniform vec4 highlightId;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0])) || any(greaterThan(position, clipBounds[1]))) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float scale = pixelRatio;\n    if(distance(highlightId.bgr, id.bgr) < 0.001) {\n      scale *= highlightScale;\n    }\n\n    vec4 worldPosition = model * vec4(position, 1.0);\n    vec4 viewPosition = view * worldPosition;\n    vec4 clipPosition = projection * viewPosition;\n    clipPosition /= clipPosition.w;\n    \n    gl_Position = clipPosition + vec4(screenSize * scale * vec2(glyph.x, -glyph.y), 0.0, 0.0);\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = position;\n  }\n}"
var projectionVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position;\nattribute vec4 color;\nattribute vec2 glyph;\nattribute vec4 id;\n\nuniform float highlightScale;\nuniform vec4 highlightId;\nuniform vec3 axes[2];\nuniform mat4 model, view, projection;\nuniform vec2 screenSize;\nuniform vec3 clipBounds[2];\nuniform float scale, pixelRatio;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(position, clipBounds[0]))   ||\n     any(greaterThan(position, clipBounds[1])) ) {\n    gl_Position = vec4(0,0,0,0);\n  } else {\n    float lscale = pixelRatio * scale;\n    if(distance(highlightId, id) < 0.0001) {\n      lscale *= highlightScale;\n    }\n\n    vec4 clipCenter   = projection * view * model * vec4(position, 1);\n    vec3 dataPosition = position + 0.5*lscale*(axes[0] * glyph.x + axes[1] * glyph.y) * clipCenter.w * screenSize.y;\n    vec4 clipPosition = projection * view * model * vec4(dataPosition, 1);\n\n    gl_Position = clipPosition;\n    interpColor = color;\n    pickId = id;\n    dataCoordinate = dataPosition;\n  }\n}\n"
var drawFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float opacity;\n\nvarying vec4 interpColor;\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   ||\n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = interpColor * opacity;\n  }\n}\n"
var pickFragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec3 fragClipBounds[2];\nuniform float pickGroup;\n\nvarying vec4 pickId;\nvarying vec3 dataCoordinate;\n\nvoid main() {\n  if(any(lessThan(dataCoordinate, fragClipBounds[0]))   || \n     any(greaterThan(dataCoordinate, fragClipBounds[1])) ) {\n    discard;\n  } else {\n    gl_FragColor = vec4(pickGroup, pickId.bgr);\n  }\n}"

var ATTRIBUTES = [
  {name: 'position', type: 'vec3'},
  {name: 'color', type: 'vec4'},
  {name: 'glyph', type: 'vec2'},
  {name: 'id', type: 'vec4'}
]

var perspective = {
    vertex: perspectiveVertSrc,
    fragment: drawFragSrc,
    attributes: ATTRIBUTES
  },
  ortho = {
    vertex: orthographicVertSrc,
    fragment: drawFragSrc,
    attributes: ATTRIBUTES
  },
  project = {
    vertex: projectionVertSrc,
    fragment: drawFragSrc,
    attributes: ATTRIBUTES
  },
  pickPerspective = {
    vertex: perspectiveVertSrc,
    fragment: pickFragSrc,
    attributes: ATTRIBUTES
  },
  pickOrtho = {
    vertex: orthographicVertSrc,
    fragment: pickFragSrc,
    attributes: ATTRIBUTES
  },
  pickProject = {
    vertex: projectionVertSrc,
    fragment: pickFragSrc,
    attributes: ATTRIBUTES
  }

function createShader(gl, src) {
  var shader = createShaderWrapper(gl, src)
  var attr = shader.attributes
  attr.position.location = 0
  attr.color.location = 1
  attr.glyph.location = 2
  attr.id.location = 3
  return shader
}

exports.createPerspective = function(gl) {
  return createShader(gl, perspective)
}
exports.createOrtho = function(gl) {
  return createShader(gl, ortho)
}
exports.createProject = function(gl) {
  return createShader(gl, project)
}
exports.createPickPerspective = function(gl) {
  return createShader(gl, pickPerspective)
}
exports.createPickOrtho = function(gl) {
  return createShader(gl, pickOrtho)
}
exports.createPickProject = function(gl) {
  return createShader(gl, pickProject)
}

},{"gl-shader":227}],223:[function(require,module,exports){
'use strict'

var createBuffer  = require('gl-buffer')
var createVAO     = require('gl-vao')
var pool          = require('typedarray-pool')
var mat4mult      = require('gl-mat4/multiply')
var shaders       = require('./lib/shaders')
var getGlyph      = require('./lib/glyphs')

var IDENTITY = [1,0,0,0,
                0,1,0,0,
                0,0,1,0,
                0,0,0,1]

module.exports = createPointCloud

function transformMat4(x, m) {
  var x0 = x[0]
  var x1 = x[1]
  var x2 = x[2]
  var x3 = x[3]
  x[0] = m[0] * x0 + m[4] * x1 + m[8]  * x2 + m[12] * x3
  x[1] = m[1] * x0 + m[5] * x1 + m[9]  * x2 + m[13] * x3
  x[2] = m[2] * x0 + m[6] * x1 + m[10] * x2 + m[14] * x3
  x[3] = m[3] * x0 + m[7] * x1 + m[11] * x2 + m[15] * x3
  return x
}

function project(p, v, m, x) {
  transformMat4(x, x, m)
  transformMat4(x, x, v)
  return transformMat4(x, x, p)
}

function clampVec(v) {
  var result = new Array(3)
  for(var i=0; i<3; ++i) {
    result[i] = Math.min(Math.max(v[i], -1e8), 1e8)
  }
  return result
}

function ScatterPlotPickResult(index, position) {
  this.index = index
  this.dataCoordinate = this.position = position
}

function PointCloud(
  gl,
  shader,
  orthoShader,
  projectShader,
  pointBuffer,
  colorBuffer,
  glyphBuffer,
  idBuffer,
  vao,
  pickPerspectiveShader,
  pickOrthoShader,
  pickProjectShader) {

  this.gl              = gl

  this.pixelRatio      = 1

  this.shader          = shader
  this.orthoShader     = orthoShader
  this.projectShader   = projectShader

  this.pointBuffer     = pointBuffer
  this.colorBuffer     = colorBuffer
  this.glyphBuffer     = glyphBuffer
  this.idBuffer        = idBuffer
  this.vao             = vao
  this.vertexCount     = 0
  this.lineVertexCount = 0

  this.opacity         = 1.0

  this.lineWidth       = 0
  this.projectScale    = [2.0/3.0, 2.0/3.0, 2.0/3.0]
  this.projectOpacity  = [1,1,1]

  this.pickId                = 0
  this.pickPerspectiveShader = pickPerspectiveShader
  this.pickOrthoShader       = pickOrthoShader
  this.pickProjectShader     = pickProjectShader
  this.points                = []

  this._selectResult = new ScatterPlotPickResult(0, [0,0,0])

  this.useOrtho = true
  this.bounds   = [[ Infinity,Infinity,Infinity],
                   [-Infinity,-Infinity,-Infinity]]

  //Axes projections
  this.axesProject = [ true, true, true ]
  this.axesBounds = [[-Infinity,-Infinity,-Infinity],
                     [ Infinity, Infinity, Infinity]]

  this.highlightId    = [1,1,1,1]
  this.highlightScale = 2

  this.clipBounds = [[-Infinity,-Infinity,-Infinity],
                     [ Infinity, Infinity, Infinity]]

  this.dirty = true
}

var proto = PointCloud.prototype

proto.pickSlots = 1

proto.setPickBase = function(pickBase) {
  this.pickId = pickBase
}

proto.isTransparent = function() {
  if(this.opacity < 1)  {
    return true
  }
  for(var i=0; i<3; ++i) {
    if(this.axesProject[i] && this.projectOpacity[i] < 1) {
      return true
    }
  }
  return false
}

proto.isOpaque = function() {
  if(this.opacity >= 1)  {
    return true
  }
  for(var i=0; i<3; ++i) {
    if(this.axesProject[i] && this.projectOpacity[i] >= 1) {
      return true
    }
  }
  return false
}

var VIEW_SHAPE = [0,0]
var U_VEC = [0,0,0]
var V_VEC = [0,0,0]
var MU_VEC = [0,0,0,1]
var MV_VEC = [0,0,0,1]
var SCRATCH_MATRIX = IDENTITY.slice()
var SCRATCH_VEC = [0,0,0]
var CLIP_BOUNDS = [[0,0,0], [0,0,0]]

function zeroVec(a) {
  a[0] = a[1] = a[2] = 0
  return a
}

function augment(hg, af) {
  hg[0] = af[0]
  hg[1] = af[1]
  hg[2] = af[2]
  hg[3] = 1
  return hg
}

function setComponent(out, v, i, x) {
  out[0] = v[0]
  out[1] = v[1]
  out[2] = v[2]
  out[i] = x
  return out
}

function getClipBounds(bounds) {
  var result = CLIP_BOUNDS
  for(var i=0; i<2; ++i) {
    for(var j=0; j<3; ++j) {
      result[i][j] = Math.max(Math.min(bounds[i][j], 1e8), -1e8)
    }
  }
  return result
}

function drawProject(shader, points, camera, transparent, forceDraw) {
  var axesProject = points.axesProject

  var gl         = points.gl
  var uniforms   = shader.uniforms
  var model      = camera.model      || IDENTITY
  var view       = camera.view       || IDENTITY
  var projection = camera.projection || IDENTITY
  var bounds     = points.axesBounds
  var clipBounds = getClipBounds(points.clipBounds)

  var cubeAxis
  if(points.axes) {
    cubeAxis = points.axes.lastCubeProps.axis
  } else {
    cubeAxis = [1,1,1]
  }

  VIEW_SHAPE[0] = 2.0/gl.drawingBufferWidth
  VIEW_SHAPE[1] = 2.0/gl.drawingBufferHeight

  shader.bind()
  uniforms.view           = view
  uniforms.projection     = projection
  uniforms.screenSize     = VIEW_SHAPE
  uniforms.highlightId    = points.highlightId
  uniforms.highlightScale = points.highlightScale
  uniforms.clipBounds     = clipBounds
  uniforms.pickGroup      = points.pickId / 255.0
  uniforms.pixelRatio     = points.pixelRatio

  for(var i=0; i<3; ++i) {
    if(!axesProject[i]) {
      continue
    }
    if((points.projectOpacity[i] < 1) !== transparent) {
      continue
    }

    uniforms.scale          = points.projectScale[i]
    uniforms.opacity        = points.projectOpacity[i]

    //Project model matrix
    var pmodel = SCRATCH_MATRIX
    for(var j=0; j<16; ++j) {
      pmodel[j] = 0
    }
    for(var j=0; j<4; ++j) {
      pmodel[5*j] = 1
    }
    pmodel[5*i] = 0
    if(cubeAxis[i] < 0) {
      pmodel[12+i] = bounds[0][i]
    } else {
      pmodel[12+i] = bounds[1][i]
    }
    mat4mult(pmodel, model, pmodel)
    uniforms.model = pmodel

    //Compute initial axes
    var u = (i+1)%3
    var v = (i+2)%3
    var du = zeroVec(U_VEC)
    var dv = zeroVec(V_VEC)
    du[u] = 1
    dv[v] = 1

    //Align orientation relative to viewer
    var mdu = project(projection, view, model, augment(MU_VEC, du))
    var mdv = project(projection, view, model, augment(MV_VEC, dv))
    if(Math.abs(mdu[1]) > Math.abs(mdv[1])) {
      var tmp = mdu
      mdu = mdv
      mdv = tmp
      tmp = du
      du = dv
      dv = tmp
      var t = u
      u = v
      v = t
    }
    if(mdu[0] < 0) {
      du[u] = -1
    }
    if(mdv[1] > 0) {
      dv[v] = -1
    }
    var su = 0.0
    var sv = 0.0
    for(var j=0; j<4; ++j) {
      su += Math.pow(model[4*u+j], 2)
      sv += Math.pow(model[4*v+j], 2)
    }
    du[u] /= Math.sqrt(su)
    dv[v] /= Math.sqrt(sv)
    uniforms.axes[0] = du
    uniforms.axes[1] = dv

    //Update fragment clip bounds
    uniforms.fragClipBounds[0] = setComponent(SCRATCH_VEC, clipBounds[0], i, -1e8)
    uniforms.fragClipBounds[1] = setComponent(SCRATCH_VEC, clipBounds[1], i, 1e8)

    //Draw interior
    points.vao.draw(gl.TRIANGLES, points.vertexCount)

    //Draw edges
    if(points.lineWidth > 0) {
      gl.lineWidth(points.lineWidth)
      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
    }
  }
}


var NEG_INFINITY3 = [-1e8, -1e8, -1e8]
var POS_INFINITY3 = [1e8, 1e8, 1e8]
var CLIP_GROUP    = [NEG_INFINITY3, POS_INFINITY3]

function drawFull(shader, pshader, points, camera, transparent, forceDraw) {
  var gl = points.gl

  points.vao.bind()

  if(transparent === (points.opacity < 1) || forceDraw) {
    shader.bind()
    var uniforms = shader.uniforms

    uniforms.model      = camera.model      || IDENTITY
    uniforms.view       = camera.view       || IDENTITY
    uniforms.projection = camera.projection || IDENTITY

    VIEW_SHAPE[0]       = 2.0/gl.drawingBufferWidth
    VIEW_SHAPE[1]       = 2.0/gl.drawingBufferHeight
    uniforms.screenSize = VIEW_SHAPE

    uniforms.highlightId    = points.highlightId
    uniforms.highlightScale = points.highlightScale

    uniforms.fragClipBounds = CLIP_GROUP
    uniforms.clipBounds     = points.axes.bounds

    uniforms.opacity    = points.opacity
    uniforms.pickGroup  = points.pickId / 255.0

    uniforms.pixelRatio = points.pixelRatio

    //Draw interior
    points.vao.draw(gl.TRIANGLES, points.vertexCount)

    //Draw edges
    if(points.lineWidth > 0) {
      gl.lineWidth(points.lineWidth)
      points.vao.draw(gl.LINES, points.lineVertexCount, points.vertexCount)
    }
  }

  drawProject(pshader, points, camera, transparent, forceDraw)

  points.vao.unbind()
}

proto.draw = function(camera) {
  var shader = this.useOrtho ? this.orthoShader : this.shader
  drawFull(shader, this.projectShader, this, camera, false, false)
}

proto.drawTransparent = function(camera) {
  var shader = this.useOrtho ? this.orthoShader : this.shader
  drawFull(shader, this.projectShader, this, camera, true, false)
}

proto.drawPick = function(camera) {
  var shader = this.useOrtho ? this.pickOrthoShader : this.pickPerspectiveShader
  drawFull(shader, this.pickProjectShader, this, camera, false, true)
}

proto.pick = function(selected) {
  if(!selected) {
    return null
  }
  if(selected.id !== this.pickId) {
    return null
  }
  var x = selected.value[2] + (selected.value[1]<<8) + (selected.value[0]<<16)
  if(x >= this.pointCount || x < 0) {
    return null
  }

  //Unpack result
  var coord = this.points[x]
  var result = this._selectResult
  result.index = x
  for(var i=0; i<3; ++i) {
    result.position[i] = result.dataCoordinate[i] = coord[i]
  }
  return result
}

proto.highlight = function(selection) {
  if(!selection) {
    this.highlightId = [1,1,1,1]
  } else {
    var pointId = selection.index
    var a0 =  pointId     &0xff
    var a1 = (pointId>>8) &0xff
    var a2 = (pointId>>16)&0xff
    this.highlightId = [a0/255.0, a1/255.0, a2/255.0, 0]
  }
}

proto.update = function(options) {

  options = options || {}

  if('perspective' in options) {
    this.useOrtho = !options.perspective
  }
  if('orthographic' in options) {
    this.useOrtho = !!options.orthographic
  }
  if('lineWidth' in options) {
    this.lineWidth = options.lineWidth
  }
  if('project' in options) {
    if(Array.isArray(options.project)) {
      this.axesProject = options.project
    } else {
      var v = !!options.project
      this.axesProject = [v,v,v]
    }
  }
  if('projectScale' in options) {
    if(Array.isArray(options.projectScale)) {
      this.projectScale = options.projectScale.slice()
    } else {
      var s = +options.projectScale
      this.projectScale = [s,s,s]
    }
  }
  if('projectOpacity' in options) {
    if(Array.isArray(options.projectOpacity)) {
      this.projectOpacity = options.projectOpacity.slice()
    } else {
      var s = +options.projectOpacity
      this.projectOpacity = [s,s,s]
    }
  }
  if('opacity' in options) {
    this.opacity = options.opacity
  }

  //Set dirty flag
  this.dirty = true

  //Create new buffers
  var points = options.position
  if(!points) {
    return
  }

  //Text font
  var font      = options.font      || 'normal'
  var alignment = options.alignment || [0,0]

  //Bounds
  var lowerBound = [ Infinity, Infinity, Infinity]
  var upperBound = [-Infinity,-Infinity,-Infinity]

  //Unpack options
  var glyphs     = options.glyph
  var colors     = options.color
  var sizes      = options.size
  var angles     = options.angle
  var lineColors = options.lineColor

  //Picking geometry
  var pickCounter = 0

  //First do pass to compute buffer sizes
  var triVertexCount     = 0
  var lineVertexCount = 0

  //Count number of points and buffer size
  var numPoints   = points.length

count_loop:
  for(var i=0; i<numPoints; ++i) {
    var x = points[i]
    for(var j=0; j<3; ++j) {
      if(isNaN(x[j]) || !isFinite(x[j])) {
        continue count_loop
      }
    }

    var glyphData
    if(Array.isArray(glyphs)) {
      glyphData = getGlyph(glyphs[i], font)
    } else if(glyphs) {
      glyphData = getGlyph(glyphs, font)
    } else {
      glyphData = getGlyph('●', font)
    }
    var glyphMesh   = glyphData[0]
    var glyphLines  = glyphData[1]
    var glyphBounds = glyphData[2]

    triVertexCount  += glyphMesh.cells.length * 3
    lineVertexCount += glyphLines.edges.length * 2
  }


  //Preallocate data
  var vertexCount   = triVertexCount + lineVertexCount
  var positionArray = pool.mallocFloat(3*vertexCount)
  var colorArray    = pool.mallocFloat(4*vertexCount)
  var glyphArray    = pool.mallocFloat(2*vertexCount)
  var idArray       = pool.mallocUint32(vertexCount)

  var textOffset = [0,alignment[1]]

  var triOffset  = 0
  var lineOffset = triVertexCount
  var color      = [0,0,0,1]
  var lineColor  = [0,0,0,1]

  var isColorArray      = Array.isArray(colors)     && Array.isArray(colors[0])
  var isLineColorArray  = Array.isArray(lineColors) && Array.isArray(lineColors[0])

fill_loop:
  for(var i=0; i<numPoints; ++i) {
    var x = points[i]
    for(var j=0; j<3; ++j) {
      if(isNaN(x[j]) || !isFinite(x[j])) {
        pickCounter += 1
        continue fill_loop
      }

      upperBound[j] = Math.max(upperBound[j], x[j])
      lowerBound[j] = Math.min(lowerBound[j], x[j])
    }

    var glyphData
    if(Array.isArray(glyphs)) {
      glyphData = getGlyph(glyphs[i], font)
    } else if(glyphs) {
      glyphData = getGlyph(glyphs, font)
    } else {
      glyphData = getGlyph('●', font)
    }
    var glyphMesh   = glyphData[0]
    var glyphLines  = glyphData[1]
    var glyphBounds = glyphData[2]


    //Get color
    if(Array.isArray(colors)) {
      var c
      if(isColorArray) {
        c = colors[i]
      } else {
        c = colors
      }
      if(c.length === 3) {
        for(var j=0; j<3; ++j) {
          color[j] = c[j]
        }
        color[3] = 1
      } else if(c.length === 4) {
        for(var j=0; j<4; ++j) {
          color[j] = c[j]
        }
      }
    } else {
      color[0] = color[1] = color[2] = 0
      color[3] = 1
    }

    //Get lineColor
    if(Array.isArray(lineColors)) {
      var c
      if(isLineColorArray) {
        c = lineColors[i]
      } else {
        c = lineColors
      }
      if(c.length === 3) {
        for(var j=0; j<3; ++j) {
          lineColor[j] = c[j]
        }
        lineColor[j] = 1
      } else if(c.length === 4) {
        for(var j=0; j<4; ++j) {
          lineColor[j] = c[j]
        }
      }
    } else {
      lineColor[0] = lineColor[1] = lineColor[2] = 0
      lineColor[3] = 1
    }

    var size = 0.5
    if(Array.isArray(sizes)) {
      size = +sizes[i]
    } else if(sizes) {
      size = +sizes
    } else if(this.useOrtho) {
      size = 12
    }

    var angle = 0
    if(Array.isArray(angles)) {
      angle = +angles[i]
    } else if(angles) {
      angle = +angles
    }

    //Loop through markers and append to buffers
    var cos = Math.cos(angle)
    var sin = Math.sin(angle)

    var x = points[i]
    for(var j=0; j<3; ++j) {
      upperBound[j] = Math.max(upperBound[j], x[j])
      lowerBound[j] = Math.min(lowerBound[j], x[j])
    }

    //Calculate text offset
    if(alignment[0] < 0) {
      textOffset[0] = alignment[0]  * (1+glyphBounds[1][0])
    } else if(alignment[0] > 0) {
      textOffset[0] = -alignment[0] * (1+glyphBounds[0][0])
    }

    //Write out inner marker
    var cells = glyphMesh.cells
    var verts = glyphMesh.positions

    for(var j=0; j<cells.length; ++j) {
      var cell = cells[j]
      for(var k=0; k<3; ++k) {
        for(var l=0; l<3; ++l) {
          positionArray[3*triOffset+l] = x[l]
        }
        for(var l=0; l<4; ++l) {
          colorArray[4*triOffset+l] = color[l]
        }
        idArray[triOffset] = pickCounter
        var p = verts[cell[k]]
        glyphArray[2*triOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
        glyphArray[2*triOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
        triOffset += 1
      }
    }

    var cells = glyphLines.edges
    var verts = glyphLines.positions

    for(var j=0; j<cells.length; ++j) {
      var cell = cells[j]
      for(var k=0; k<2; ++k) {
        for(var l=0; l<3; ++l) {
          positionArray[3*lineOffset+l] = x[l]
        }
        for(var l=0; l<4; ++l) {
          colorArray[4*lineOffset+l] = lineColor[l]
        }
        idArray[lineOffset] = pickCounter
        var p = verts[cell[k]]
        glyphArray[2*lineOffset]   = size * (cos*p[0] - sin*p[1] + textOffset[0])
        glyphArray[2*lineOffset+1] = size * (sin*p[0] + cos*p[1] + textOffset[1])
        lineOffset += 1
      }
    }

    //Increment pickCounter
    pickCounter += 1
  }


  //Update vertex counts
  this.vertexCount      = triVertexCount
  this.lineVertexCount  = lineVertexCount

  //Update buffers
  this.pointBuffer.update(positionArray)
  this.colorBuffer.update(colorArray)
  this.glyphBuffer.update(glyphArray)
  this.idBuffer.update(new Uint32Array(idArray))

  pool.free(positionArray)
  pool.free(colorArray)
  pool.free(glyphArray)
  pool.free(idArray)

  //Update bounds
  this.bounds = [lowerBound, upperBound]

  //Save points
  this.points = points

  //Save number of points
  this.pointCount = points.length
}

proto.dispose = function() {
  //Shaders
  this.shader.dispose()
  this.orthoShader.dispose()
  this.pickPerspectiveShader.dispose()
  this.pickOrthoShader.dispose()

  //Vertex array
  this.vao.dispose()

  //Buffers
  this.pointBuffer.dispose()
  this.colorBuffer.dispose()
  this.glyphBuffer.dispose()
  this.idBuffer.dispose()
}

function createPointCloud(options) {
  var gl = options.gl

  var shader                = shaders.createPerspective(gl)
  var orthoShader           = shaders.createOrtho(gl)
  var projectShader         = shaders.createProject(gl)
  var pickPerspectiveShader = shaders.createPickPerspective(gl)
  var pickOrthoShader       = shaders.createPickOrtho(gl)
  var pickProjectShader     = shaders.createPickProject(gl)

  var pointBuffer = createBuffer(gl)
  var colorBuffer = createBuffer(gl)
  var glyphBuffer = createBuffer(gl)
  var idBuffer    = createBuffer(gl)
  var vao = createVAO(gl, [
    {
      buffer: pointBuffer,
      size: 3,
      type: gl.FLOAT
    },
    {
      buffer: colorBuffer,
      size: 4,
      type: gl.FLOAT
    },
    {
      buffer: glyphBuffer,
      size: 2,
      type: gl.FLOAT
    },
    {
      buffer: idBuffer,
      size: 4,
      type: gl.UNSIGNED_BYTE,
      normalized: true
    }
  ])

  var pointCloud = new PointCloud(
    gl,
    shader,
    orthoShader,
    projectShader,
    pointBuffer,
    colorBuffer,
    glyphBuffer,
    idBuffer,
    vao,
    pickPerspectiveShader,
    pickOrthoShader,
    pickProjectShader)

  pointCloud.update(options)

  return pointCloud
}

},{"./lib/glyphs":221,"./lib/shaders":222,"gl-buffer":132,"gl-mat4/multiply":158,"gl-vao":243,"typedarray-pool":992}],224:[function(require,module,exports){
'use strict'



exports.boxVertex = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec2 vertex;\n\nuniform vec2 cornerA, cornerB;\n\nvoid main() {\n  gl_Position = vec4(mix(cornerA, cornerB, vertex), 0, 1);\n}\n"
exports.boxFragment = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec4 color;\n\nvoid main() {\n  gl_FragColor = color;\n}\n"

},{}],225:[function(require,module,exports){
'use strict'

var createShader = require('gl-shader')
var createBuffer = require('gl-buffer')

var SHADERS = require('./lib/shaders')

module.exports = createSelectBox

function SelectBox(plot, boxBuffer, boxShader) {
  this.plot = plot
  this.boxBuffer = boxBuffer
  this.boxShader = boxShader

  this.enabled = true

  this.selectBox = [Infinity,Infinity,-Infinity,-Infinity]

  this.borderColor = [0,0,0,1]
  this.innerFill   = false
  this.innerColor  = [0,0,0,0.25]
  this.outerFill   = true
  this.outerColor  = [0,0,0,0.5]
  this.borderWidth = 10
}

var proto = SelectBox.prototype

proto.draw = function() {
  if(!this.enabled) {
    return
  }

  var plot         = this.plot
  var selectBox    = this.selectBox
  var lineWidth    = this.borderWidth

  var innerFill    = this.innerFill
  var innerColor   = this.innerColor
  var outerFill    = this.outerFill
  var outerColor   = this.outerColor
  var borderColor  = this.borderColor

  var boxes        = plot.box
  var screenBox    = plot.screenBox
  var dataBox      = plot.dataBox
  var viewBox      = plot.viewBox
  var pixelRatio   = plot.pixelRatio

  //Map select box into pixel coordinates
  var loX = (selectBox[0]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
  var loY = (selectBox[1]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]
  var hiX = (selectBox[2]-dataBox[0])*(viewBox[2]-viewBox[0])/(dataBox[2]-dataBox[0])+viewBox[0]
  var hiY = (selectBox[3]-dataBox[1])*(viewBox[3]-viewBox[1])/(dataBox[3]-dataBox[1])+viewBox[1]

  loX = Math.max(loX, viewBox[0])
  loY = Math.max(loY, viewBox[1])
  hiX = Math.min(hiX, viewBox[2])
  hiY = Math.min(hiY, viewBox[3])

  if(hiX < loX || hiY < loY) {
    return
  }

  boxes.bind()

  //Draw box
  var screenWidth  = screenBox[2] - screenBox[0]
  var screenHeight = screenBox[3] - screenBox[1]

  if(this.outerFill) {
    boxes.drawBox(0, 0, screenWidth, loY, outerColor)
    boxes.drawBox(0, loY, loX, hiY, outerColor)
    boxes.drawBox(0, hiY, screenWidth, screenHeight, outerColor)
    boxes.drawBox(hiX, loY, screenWidth, hiY, outerColor)
  }

  if(this.innerFill) {
    boxes.drawBox(loX, loY, hiX, hiY, innerColor)
  }

  //Draw border
  if(lineWidth > 0) {

    //Draw border
    var w = lineWidth * pixelRatio
    boxes.drawBox(loX-w, loY-w, hiX+w, loY+w, borderColor)
    boxes.drawBox(loX-w, hiY-w, hiX+w, hiY+w, borderColor)
    boxes.drawBox(loX-w, loY-w, loX+w, hiY+w, borderColor)
    boxes.drawBox(hiX-w, loY-w, hiX+w, hiY+w, borderColor)
  }
}

proto.update = function(options) {
  options = options || {}

  this.innerFill    = !!options.innerFill
  this.outerFill    = !!options.outerFill
  this.innerColor   = (options.innerColor   || [0,0,0,0.5]).slice()
  this.outerColor   = (options.outerColor   || [0,0,0,0.5]).slice()
  this.borderColor  = (options.borderColor || [0,0,0,1]).slice()
  this.borderWidth  = options.borderWidth || 0
  this.selectBox    = (options.selectBox || this.selectBox).slice()
}

proto.dispose = function() {
  this.boxBuffer.dispose()
  this.boxShader.dispose()
  this.plot.removeOverlay(this)
}

function createSelectBox(plot, options) {
  var gl = plot.gl
  var buffer = createBuffer(gl, [
    0, 0,
    0, 1,
    1, 0,
    1, 1 ])
  var shader = createShader(gl, SHADERS.boxVertex, SHADERS.boxFragment)
  var selectBox = new SelectBox(plot, buffer, shader)
  selectBox.update(options)
  plot.addOverlay(selectBox)
  return selectBox
}

},{"./lib/shaders":224,"gl-buffer":132,"gl-shader":227}],226:[function(require,module,exports){
'use strict'

module.exports = createSelectBuffer

var createFBO = require('gl-fbo')
var pool      = require('typedarray-pool')
var ndarray   = require('ndarray')

var nextPow2  = require('bit-twiddle').nextPow2

var selectRange = require('cwise/lib/wrapper')({"args":["array",{"offset":[0,0,1],"array":0},{"offset":[0,0,2],"array":0},{"offset":[0,0,3],"array":0},"scalar","scalar","index"],"pre":{"body":"{this_closestD2=1e8,this_closestX=-1,this_closestY=-1}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"body":{"body":"{if(_inline_16_arg0_<255||_inline_16_arg1_<255||_inline_16_arg2_<255||_inline_16_arg3_<255){var _inline_16_l=_inline_16_arg4_-_inline_16_arg6_[0],_inline_16_a=_inline_16_arg5_-_inline_16_arg6_[1],_inline_16_f=_inline_16_l*_inline_16_l+_inline_16_a*_inline_16_a;_inline_16_f<this_closestD2&&(this_closestD2=_inline_16_f,this_closestX=_inline_16_arg6_[0],this_closestY=_inline_16_arg6_[1])}}","args":[{"name":"_inline_16_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg4_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg5_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_16_arg6_","lvalue":false,"rvalue":true,"count":4}],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":["_inline_16_a","_inline_16_f","_inline_16_l"]},"post":{"body":"{return[this_closestX,this_closestY,this_closestD2]}","args":[],"thisVars":["this_closestD2","this_closestX","this_closestY"],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})

function SelectResult(x, y, id, value, distance) {
  this.coord = [x, y]
  this.id = id
  this.value = value
  this.distance = distance
}

function SelectBuffer(gl, fbo, buffer) {
  this.gl     = gl
  this.fbo    = fbo
  this.buffer = buffer
  this._readTimeout = null
  var self = this

  this._readCallback = function() {
    if(!self.gl) {
      return
    }
    fbo.bind()
    gl.readPixels(0,0,fbo.shape[0],fbo.shape[1],gl.RGBA,gl.UNSIGNED_BYTE,self.buffer)
    self._readTimeout = null
  }
}

var proto = SelectBuffer.prototype

Object.defineProperty(proto, 'shape', {
  get: function() {
    if(!this.gl) {
      return [0,0]
    }
    return this.fbo.shape.slice()
  },
  set: function(v) {
    if(!this.gl) {
      return
    }
    this.fbo.shape = v
    var c = this.fbo.shape[0]
    var r = this.fbo.shape[1]
    if(r*c*4 > this.buffer.length) {
      pool.free(this.buffer)
      var buffer = this.buffer = pool.mallocUint8(nextPow2(r*c*4))
      for(var i=0; i<r*c*4; ++i) {
        buffer[i] = 0xff
      }
    }
    return v
  }
})

proto.begin = function() {
  var gl = this.gl
  var shape = this.shape
  if(!gl) {
    return
  }

  this.fbo.bind()
  gl.clearColor(1,1,1,1)
  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
}

proto.end = function() {
  var gl = this.gl
  if(!gl) {
    return
  }
  gl.bindFramebuffer(gl.FRAMEBUFFER, null)
  if(!this._readTimeout) {
    clearTimeout(this._readTimeout)
  }
  this._readTimeout = setTimeout(this._readCallback, 1)
}

proto.query = function(x, y, radius) {
  if(!this.gl) {
    return null
  }

  var shape = this.fbo.shape.slice()

  x = x|0
  y = y|0
  if(typeof radius !== 'number') {
    radius = 1.0
  }

  var x0 = Math.min(Math.max(x - radius, 0), shape[0])|0
  var x1 = Math.min(Math.max(x + radius, 0), shape[0])|0
  var y0 = Math.min(Math.max(y - radius, 0), shape[1])|0
  var y1 = Math.min(Math.max(y + radius, 0), shape[1])|0

  if(x1 <= x0 || y1 <= y0) {
    return null
  }

  var dims   = [x1-x0,y1-y0]
  var region = ndarray(
    this.buffer,
    [dims[0], dims[1], 4],
    [4, shape[0]*4, 1],
    4*(x0 + shape[0]*y0));

  var closest = selectRange(region.hi(dims[0],dims[1],1), radius, radius)
  var dx = closest[0]
  var dy = closest[1]
  if(dx < 0 || Math.pow(this.radius, 2) < closest[2]) {
    return null
  }

  var c0 = region.get(dx, dy, 0)
  var c1 = region.get(dx, dy, 1)
  var c2 = region.get(dx, dy, 2)
  var c3 = region.get(dx, dy, 3)

  return new SelectResult(
     (dx + x0)|0,
     (dy + y0)|0,
     c0,
     [c1, c2, c3],
     Math.sqrt(closest[2]))
}

proto.dispose = function() {
  if(!this.gl) {
    return
  }
  this.fbo.dispose()
  pool.free(this.buffer)
  this.gl = null
  if(this._readTimeout) {
    clearTimeout(this._readTimeout)
  }
}

function createSelectBuffer(gl, shape) {
  var fbo = createFBO(gl, shape)
  var buffer = pool.mallocUint8(shape[0]*shape[1]*4)
  return new SelectBuffer(gl, fbo, buffer)
}

},{"bit-twiddle":33,"cwise/lib/wrapper":85,"gl-fbo":139,"ndarray":443,"typedarray-pool":992}],227:[function(require,module,exports){
'use strict'

var createUniformWrapper   = require('./lib/create-uniforms')
var createAttributeWrapper = require('./lib/create-attributes')
var makeReflect            = require('./lib/reflect')
var shaderCache            = require('./lib/shader-cache')
var runtime                = require('./lib/runtime-reflect')
var GLError                = require("./lib/GLError")

//Shader object
function Shader(gl) {
  this.gl         = gl

  //Default initialize these to null
  this._vref      =
  this._fref      =
  this._relink    =
  this.vertShader =
  this.fragShader =
  this.program    =
  this.attributes =
  this.uniforms   =
  this.types      = null
}

var proto = Shader.prototype

proto.bind = function() {
  if(!this.program) {
    this._relink()
  }
  this.gl.useProgram(this.program)
}

proto.dispose = function() {
  if(this._fref) {
    this._fref.dispose()
  }
  if(this._vref) {
    this._vref.dispose()
  }
  this.attributes =
  this.types      =
  this.vertShader =
  this.fragShader =
  this.program    =
  this._relink    =
  this._fref      =
  this._vref      = null
}

function compareAttributes(a, b) {
  if(a.name < b.name) {
    return -1
  }
  return 1
}

//Update export hook for glslify-live
proto.update = function(
    vertSource
  , fragSource
  , uniforms
  , attributes) {

  //If only one object passed, assume glslify style output
  if(!fragSource || arguments.length === 1) {
    var obj = vertSource
    vertSource = obj.vertex
    fragSource = obj.fragment
    uniforms   = obj.uniforms
    attributes = obj.attributes
  }

  var wrapper = this
  var gl      = wrapper.gl

  //Compile vertex and fragment shaders
  var pvref = wrapper._vref
  wrapper._vref = shaderCache.shader(gl, gl.VERTEX_SHADER, vertSource)
  if(pvref) {
    pvref.dispose()
  }
  wrapper.vertShader = wrapper._vref.shader
  var pfref = this._fref
  wrapper._fref = shaderCache.shader(gl, gl.FRAGMENT_SHADER, fragSource)
  if(pfref) {
    pfref.dispose()
  }
  wrapper.fragShader = wrapper._fref.shader

  //If uniforms/attributes is not specified, use RT reflection
  if(!uniforms || !attributes) {

    //Create initial test program
    var testProgram = gl.createProgram()
    gl.attachShader(testProgram, wrapper.fragShader)
    gl.attachShader(testProgram, wrapper.vertShader)
    gl.linkProgram(testProgram)
    if(!gl.getProgramParameter(testProgram, gl.LINK_STATUS)) {
      var errLog = gl.getProgramInfoLog(testProgram)
      throw new GLError(errLog, 'Error linking program:' + errLog)
    }

    //Load data from runtime
    uniforms   = uniforms   || runtime.uniforms(gl, testProgram)
    attributes = attributes || runtime.attributes(gl, testProgram)

    //Release test program
    gl.deleteProgram(testProgram)
  }

  //Sort attributes lexicographically
  // overrides undefined WebGL behavior for attribute locations
  attributes = attributes.slice()
  attributes.sort(compareAttributes)

  //Convert attribute types, read out locations
  var attributeUnpacked  = []
  var attributeNames     = []
  var attributeLocations = []
  for(var i=0; i<attributes.length; ++i) {
    var attr = attributes[i]
    if(attr.type.indexOf('mat') >= 0) {
      var size = attr.type.charAt(attr.type.length-1)|0
      var locVector = new Array(size)
      for(var j=0; j<size; ++j) {
        locVector[j] = attributeLocations.length
        attributeNames.push(attr.name + '[' + j + ']')
        if(typeof attr.location === 'number') {
          attributeLocations.push(attr.location + j)
        } else if(Array.isArray(attr.location) &&
                  attr.location.length === size &&
                  typeof attr.location[j] === 'number') {
          attributeLocations.push(attr.location[j]|0)
        } else {
          attributeLocations.push(-1)
        }
      }
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: locVector
      })
    } else {
      attributeUnpacked.push({
        name: attr.name,
        type: attr.type,
        locations: [ attributeLocations.length ]
      })
      attributeNames.push(attr.name)
      if(typeof attr.location === 'number') {
        attributeLocations.push(attr.location|0)
      } else {
        attributeLocations.push(-1)
      }
    }
  }

  //For all unspecified attributes, assign them lexicographically min attribute
  var curLocation = 0
  for(var i=0; i<attributeLocations.length; ++i) {
    if(attributeLocations[i] < 0) {
      while(attributeLocations.indexOf(curLocation) >= 0) {
        curLocation += 1
      }
      attributeLocations[i] = curLocation
    }
  }

  //Rebuild program and recompute all uniform locations
  var uniformLocations = new Array(uniforms.length)
  function relink() {
    wrapper.program = shaderCache.program(
        gl
      , wrapper._vref
      , wrapper._fref
      , attributeNames
      , attributeLocations)

    for(var i=0; i<uniforms.length; ++i) {
      uniformLocations[i] = gl.getUniformLocation(
          wrapper.program
        , uniforms[i].name)
    }
  }

  //Perform initial linking, reuse program used for reflection
  relink()

  //Save relinking procedure, defer until runtime
  wrapper._relink = relink

  //Generate type info
  wrapper.types = {
    uniforms:   makeReflect(uniforms),
    attributes: makeReflect(attributes)
  }

  //Generate attribute wrappers
  wrapper.attributes = createAttributeWrapper(
      gl
    , wrapper
    , attributeUnpacked
    , attributeLocations)

  //Generate uniform wrappers
  Object.defineProperty(wrapper, 'uniforms', createUniformWrapper(
      gl
    , wrapper
    , uniforms
    , uniformLocations))
}

//Compiles and links a shader program with the given attribute and vertex list
function createShader(
    gl
  , vertSource
  , fragSource
  , uniforms
  , attributes) {

  var shader = new Shader(gl)

  shader.update(
      vertSource
    , fragSource
    , uniforms
    , attributes)

  return shader
}

module.exports = createShader

},{"./lib/GLError":228,"./lib/create-attributes":229,"./lib/create-uniforms":230,"./lib/reflect":231,"./lib/runtime-reflect":232,"./lib/shader-cache":233}],228:[function(require,module,exports){
arguments[4][188][0].apply(exports,arguments)
},{"dup":188}],229:[function(require,module,exports){
arguments[4][189][0].apply(exports,arguments)
},{"./GLError":228,"dup":189}],230:[function(require,module,exports){
arguments[4][190][0].apply(exports,arguments)
},{"./GLError":228,"./reflect":231,"dup":190}],231:[function(require,module,exports){
arguments[4][191][0].apply(exports,arguments)
},{"dup":191}],232:[function(require,module,exports){
arguments[4][192][0].apply(exports,arguments)
},{"dup":192}],233:[function(require,module,exports){
arguments[4][193][0].apply(exports,arguments)
},{"./GLError":228,"dup":193,"gl-format-compiler-error":140,"weakmap-shim":1014}],234:[function(require,module,exports){
'use strict'

module.exports = createSpikes2D

function GLSpikes2D(plot) {
  this.plot = plot
  this.enable = [true, true, false, false]
  this.width  = [1, 1, 1, 1]
  this.color  = [[0,0,0,1],
                 [0,0,0,1],
                 [0,0,0,1],
                 [0,0,0,1]]
  this.center = [Infinity, Infinity]
}

var proto = GLSpikes2D.prototype

proto.update = function(options) {
  options = options || {}
  this.enable = (options.enable || [true,true,false,false]).slice()
  this.width  = (options.width || [1,1,1,1]).slice()
  this.color  = (options.color || [
                  [0,0,0,1],
                  [0,0,0,1],
                  [0,0,0,1],
                  [0,0,0,1]]).map(function(x) { return x.slice() })
  this.center = (options.center || [Infinity,Infinity]).slice()
  this.plot.setOverlayDirty()
}

proto.draw = function() {
  var spikeEnable = this.enable
  var spikeWidth  = this.width
  var spikeColor  = this.color
  var spikeCenter = this.center
  var plot        = this.plot
  var line        = plot.line

  var dataBox     = plot.dataBox
  var viewPixels  = plot.viewBox

  line.bind()

  if(dataBox[0] <= spikeCenter[0] && spikeCenter[0] <= dataBox[2] &&
     dataBox[1] <= spikeCenter[1] && spikeCenter[1] <= dataBox[3]) {

    var centerX = viewPixels[0] + (spikeCenter[0] - dataBox[0]) / (dataBox[2] - dataBox[0]) * (viewPixels[2] - viewPixels[0])
    var centerY = viewPixels[1] + (spikeCenter[1] - dataBox[1]) / (dataBox[3] - dataBox[1]) * (viewPixels[3] - viewPixels[1])

    if(spikeEnable[0]) {
     line.drawLine(
       centerX, centerY,
       viewPixels[0], centerY,
       spikeWidth[0], spikeColor[0])
    }
    if(spikeEnable[1]) {
     line.drawLine(
       centerX, centerY,
       centerX, viewPixels[1],
       spikeWidth[1], spikeColor[1])
    }
    if(spikeEnable[2]) {
      line.drawLine(
        centerX, centerY,
        viewPixels[2], centerY,
        spikeWidth[2], spikeColor[2])
    }
    if(spikeEnable[3]) {
      line.drawLine(
        centerX, centerY,
        centerX, viewPixels[3],
        spikeWidth[3], spikeColor[3])
    }
  }
}

proto.dispose = function() {
  this.plot.removeOverlay(this)
}

function createSpikes2D(plot, options) {
  var spikes = new GLSpikes2D(plot)
  spikes.update(options)
  plot.addOverlay(spikes)
  return spikes
}

},{}],235:[function(require,module,exports){
'use strict'


var createShader = require('gl-shader')

var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec3 position, color;\nattribute float weight;\n\nuniform mat4 model, view, projection;\nuniform vec3 coordinates[3];\nuniform vec4 colors[3];\nuniform vec2 screenShape;\nuniform float lineWidth;\n\nvarying vec4 fragColor;\n\nvoid main() {\n  vec3 vertexPosition = mix(coordinates[0],\n    mix(coordinates[2], coordinates[1], 0.5 * (position + 1.0)), abs(position));\n\n  vec4 clipPos = projection * view * model * vec4(vertexPosition, 1.0);\n  vec2 clipOffset = (projection * view * model * vec4(color, 0.0)).xy;\n  vec2 delta = weight * clipOffset * screenShape;\n  vec2 lineOffset = normalize(vec2(delta.y, -delta.x)) / screenShape;\n\n  gl_Position   = vec4(clipPos.xy + clipPos.w * 0.5 * lineWidth * lineOffset, clipPos.z, clipPos.w);\n  fragColor     = color.x * colors[0] + color.y * colors[1] + color.z * colors[2];\n}\n"
var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nvarying vec4 fragColor;\n\nvoid main() {\n  gl_FragColor = fragColor;\n}"

module.exports = function(gl) {
  return createShader(gl, vertSrc, fragSrc, null, [
    {name: 'position', type: 'vec3'},
    {name: 'color', type: 'vec3'},
    {name: 'weight', type: 'float'}
  ])
}

},{"gl-shader":227}],236:[function(require,module,exports){
'use strict'

var createBuffer = require('gl-buffer')
var createVAO = require('gl-vao')
var createShader = require('./shaders/index')

module.exports = createSpikes

var identity = [1,0,0,0,
                0,1,0,0,
                0,0,1,0,
                0,0,0,1]

function AxisSpikes(gl, buffer, vao, shader) {
  this.gl         = gl
  this.buffer     = buffer
  this.vao        = vao
  this.shader     = shader
  this.pixelRatio = 1
  this.bounds     = [[-1000,-1000,-1000], [1000,1000,1000]]
  this.position   = [0,0,0]
  this.lineWidth  = [2,2,2]
  this.colors     = [[0,0,0,1], [0,0,0,1], [0,0,0,1]]
  this.enabled    = [true,true,true]
  this.drawSides  = [true,true,true]
  this.axes       = null
}

var proto = AxisSpikes.prototype

var OUTER_FACE = [0,0,0]
var INNER_FACE = [0,0,0]

var SHAPE = [0,0]

proto.isTransparent = function() {
  return false
}

proto.drawTransparent = function(camera) {}

proto.draw = function(camera) {
  var gl = this.gl
  var vao = this.vao
  var shader = this.shader

  vao.bind()
  shader.bind()

  var model      = camera.model || identity
  var view       = camera.view || identity
  var projection = camera.projection || identity

  var axis
  if(this.axes) {
    axis = this.axes.lastCubeProps.axis
  }

  var outerFace = OUTER_FACE
  var innerFace = INNER_FACE
  for(var i=0; i<3; ++i) {
    if(axis && axis[i] < 0) {
      outerFace[i] = this.bounds[0][i]
      innerFace[i] = this.bounds[1][i]
    } else {
      outerFace[i] = this.bounds[1][i]
      innerFace[i] = this.bounds[0][i]
    }
  }

  SHAPE[0] = gl.drawingBufferWidth
  SHAPE[1] = gl.drawingBufferHeight

  shader.uniforms.model       = model
  shader.uniforms.view        = view
  shader.uniforms.projection  = projection
  shader.uniforms.coordinates = [this.position, outerFace, innerFace]
  shader.uniforms.colors      = this.colors
  shader.uniforms.screenShape = SHAPE

  for(var i=0; i<3; ++i) {
    shader.uniforms.lineWidth = this.lineWidth[i] * this.pixelRatio
    if(this.enabled[i]) {
      vao.draw(gl.TRIANGLES, 6, 6*i)
      if(this.drawSides[i]) {
        vao.draw(gl.TRIANGLES, 12, 18+12*i)
      }
    }
  }

  vao.unbind()
}

proto.update = function(options) {
  if(!options) {
    return
  }
  if("bounds" in options) {
    this.bounds = options.bounds
  }
  if("position" in options) {
    this.position = options.position
  }
  if("lineWidth" in options) {
    this.lineWidth = options.lineWidth
  }
  if("colors" in options) {
    this.colors = options.colors
  }
  if("enabled" in options) {
    this.enabled = options.enabled
  }
  if("drawSides" in options) {
    this.drawSides = options.drawSides
  }
}

proto.dispose = function() {
  this.vao.dispose()
  this.buffer.dispose()
  this.shader.dispose()
}



function createSpikes(gl, options) {
  //Create buffers
  var data = [ ]

  function line(x,y,z,i,l,h) {
    var row = [x,y,z,  0,0,0,  1]
    row[i+3] = 1
    row[i] = l
    data.push.apply(data, row)
    row[6] = -1
    data.push.apply(data, row)
    row[i] = h
    data.push.apply(data, row)
    data.push.apply(data, row)
    row[6] = 1
    data.push.apply(data, row)
    row[i] = l
    data.push.apply(data, row)
  }

  line(0,0,0, 0, 0, 1)
  line(0,0,0, 1, 0, 1)
  line(0,0,0, 2, 0, 1)

  line(1,0,0,  1,  -1,1)
  line(1,0,0,  2,  -1,1)

  line(0,1,0,  0,  -1,1)
  line(0,1,0,  2,  -1,1)

  line(0,0,1,  0,  -1,1)
  line(0,0,1,  1,  -1,1)

  var buffer = createBuffer(gl, data)
  var vao = createVAO(gl, [{
    type: gl.FLOAT,
    buffer: buffer,
    size: 3,
    offset: 0,
    stride: 28
  }, {
    type: gl.FLOAT,
    buffer: buffer,
    size: 3,
    offset: 12,
    stride: 28
  }, {
    type: gl.FLOAT,
    buffer: buffer,
    size: 1,
    offset: 24,
    stride: 28
  }])

  //Create shader
  var shader = createShader(gl)
  shader.attributes.position.location = 0
  shader.attributes.color.location = 1
  shader.attributes.weight.location = 2

  //Create spike object
  var spikes = new AxisSpikes(gl, buffer, vao, shader)

  //Set parameters
  spikes.update(options)

  //Return resulting object
  return spikes
}

},{"./shaders/index":235,"gl-buffer":132,"gl-vao":243}],237:[function(require,module,exports){
var createShader = require('gl-shader')


var vertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute vec3 f;\nattribute vec3 normal;\n\nuniform mat4 model, view, projection, inverseModel;\nuniform vec3 lightPosition, eyePosition;\nuniform sampler2D colormap;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\nvarying vec4 vColor;\n\nvoid main() {\n  worldCoordinate = vec3(uv.zw, f.x);\n  vec4 worldPosition = model * vec4(worldCoordinate, 1.0);\n  vec4 clipPosition = projection * view * worldPosition;\n  gl_Position = clipPosition;\n  kill = f.y;\n  value = f.z;\n  planeCoordinate = uv.xy;\n\n  vColor = texture2D(colormap, vec2(value, value));\n\n  //Lighting geometry parameters\n  vec4 cameraCoordinate = view * worldPosition;\n  cameraCoordinate.xyz /= cameraCoordinate.w;\n  lightDirection = lightPosition - cameraCoordinate.xyz;\n  eyeDirection   = eyePosition - cameraCoordinate.xyz;\n  surfaceNormal  = normalize((vec4(normal,0) * inverseModel).xyz);\n}\n"
var fragSrc = "precision mediump float;\n#define GLSLIFY 1\n\nfloat beckmannDistribution_2_0(float x, float roughness) {\n  float NdotH = max(x, 0.0001);\n  float cos2Alpha = NdotH * NdotH;\n  float tan2Alpha = (cos2Alpha - 1.0) / cos2Alpha;\n  float roughness2 = roughness * roughness;\n  float denom = 3.141592653589793 * roughness2 * cos2Alpha * cos2Alpha;\n  return exp(tan2Alpha / roughness2) / denom;\n}\n\n\n\nfloat beckmannSpecular_1_1(\n  vec3 lightDirection,\n  vec3 viewDirection,\n  vec3 surfaceNormal,\n  float roughness) {\n  return beckmannDistribution_2_0(dot(surfaceNormal, normalize(lightDirection + viewDirection)), roughness);\n}\n\n\n\nuniform vec3 lowerBound, upperBound;\nuniform float contourTint;\nuniform vec4 contourColor;\nuniform sampler2D colormap;\nuniform vec3 clipBounds[2];\nuniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;\nuniform float vertexColor;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\nvarying vec4 vColor;\n\nvoid main() {\n  if (kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n\n  vec3 N = normalize(surfaceNormal);\n  vec3 V = normalize(eyeDirection);\n  vec3 L = normalize(lightDirection);\n\n  if(gl_FrontFacing) {\n    N = -N;\n  }\n\n  float specular = beckmannSpecular_1_1(L, V, N, roughness);\n  float diffuse  = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);\n\n  //decide how to interpolate color — in vertex or in fragment\n  vec4 surfaceColor = step(vertexColor, .5) * texture2D(colormap, vec2(value, value)) + step(.5, vertexColor) * vColor;\n\n  vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular,  1.0);\n\n  gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;\n}\n"
var contourVertSrc = "precision mediump float;\n#define GLSLIFY 1\n\nattribute vec4 uv;\nattribute float f;\n\nuniform mat3 permutation;\nuniform mat4 model, view, projection;\nuniform float height, zOffset;\nuniform sampler2D colormap;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 lightDirection, eyeDirection, surfaceNormal;\nvarying vec4 vColor;\n\nvoid main() {\n  vec3 dataCoordinate = permutation * vec3(uv.xy, height);\n  vec4 worldPosition = model * vec4(dataCoordinate, 1.0);\n\n  vec4 clipPosition = projection * view * worldPosition;\n  clipPosition.z = clipPosition.z + zOffset;\n\n  gl_Position = clipPosition;\n  value = f;\n  kill = -1.0;\n  worldCoordinate = dataCoordinate;\n  planeCoordinate = uv.zw;\n\n  vColor = texture2D(colormap, vec2(value, value));\n\n  //Don't do lighting for contours\n  surfaceNormal   = vec3(1,0,0);\n  eyeDirection    = vec3(0,1,0);\n  lightDirection  = vec3(0,0,1);\n}\n"
var pickSrc = "precision mediump float;\n#define GLSLIFY 1\n\nuniform vec2 shape;\nuniform vec3 clipBounds[2];\nuniform float pickId;\n\nvarying float value, kill;\nvarying vec3 worldCoordinate;\nvarying vec2 planeCoordinate;\nvarying vec3 surfaceNormal;\n\nvec2 splitFloat(float v) {\n  float vh = 255.0 * v;\n  float upper = floor(vh);\n  float lower = fract(vh);\n  return vec2(upper / 255.0, floor(lower * 16.0) / 16.0);\n}\n\nvoid main() {\n  if(kill > 0.0 ||\n    any(lessThan(worldCoordinate, clipBounds[0])) || any(greaterThan(worldCoordinate, clipBounds[1]))) {\n    discard;\n  }\n  vec2 ux = splitFloat(planeCoordinate.x / shape.x);\n  vec2 uy = splitFloat(planeCoordinate.y / shape.y);\n  gl_FragColor = vec4(pickId, ux.x, uy.x, ux.y + (uy.y/16.0));\n}\n"

exports.createShader = function (gl) {
  var shader = createShader(gl, vertSrc, fragSrc, null, [
    {name: 'uv', type: 'vec4'},
    {name: 'f', type: 'vec3'},
    {name: 'normal', type: 'vec3'}
  ])
  shader.attributes.uv.location = 0
  shader.attributes.f.location = 1
  shader.attributes.normal.location = 2
  return shader
}
exports.createPickShader = function (gl) {
  var shader = createShader(gl, vertSrc, pickSrc, null, [
    {name: 'uv', type: 'vec4'},
    {name: 'f', type: 'vec3'},
    {name: 'normal', type: 'vec3'}
  ])
  shader.attributes.uv.location = 0
  shader.attributes.f.location = 1
  shader.attributes.normal.location = 2
  return shader
}
exports.createContourShader = function (gl) {
  var shader = createShader(gl, contourVertSrc, fragSrc, null, [
    {name: 'uv', type: 'vec4'},
    {name: 'f', type: 'float'}
  ])
  shader.attributes.uv.location = 0
  shader.attributes.f.location = 1
  return shader
}
exports.createPickContourShader = function (gl) {
  var shader = createShader(gl, contourVertSrc, pickSrc, null, [
    {name: 'uv', type: 'vec4'},
    {name: 'f', type: 'float'}
  ])
  shader.attributes.uv.location = 0
  shader.attributes.f.location = 1
  return shader
}

},{"gl-shader":227}],238:[function(require,module,exports){
'use strict'

module.exports = createSurfacePlot

var bits = require('bit-twiddle')
var createBuffer = require('gl-buffer')
var createVAO = require('gl-vao')
var createTexture = require('gl-texture2d')
var pool = require('typedarray-pool')
var colormap = require('colormap')
var ops = require('ndarray-ops')
var pack = require('ndarray-pack')
var ndarray = require('ndarray')
var surfaceNets = require('surface-nets')
var multiply = require('gl-mat4/multiply')
var invert = require('gl-mat4/invert')
var bsearch = require('binary-search-bounds')
var gradient = require('ndarray-gradient')
var shaders = require('./lib/shaders')

var createShader = shaders.createShader
var createContourShader = shaders.createContourShader
var createPickShader = shaders.createPickShader
var createPickContourShader = shaders.createPickContourShader

var SURFACE_VERTEX_SIZE = 4 * (4 + 3 + 3)

var IDENTITY = [
  1, 0, 0, 0,
  0, 1, 0, 0,
  0, 0, 1, 0,
  0, 0, 0, 1 ]

var QUAD = [
  [0, 0],
  [0, 1],
  [1, 0],
  [1, 1],
  [1, 0],
  [0, 1]
]

var PERMUTATIONS = [
  [0, 0, 0, 0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0, 0, 0, 0]
]

;(function () {
  for (var i = 0; i < 3; ++i) {
    var p = PERMUTATIONS[i]
    var u = (i + 1) % 3
    var v = (i + 2) % 3
    p[u + 0] = 1
    p[v + 3] = 1
    p[i + 6] = 1
  }
})()

function SurfacePickResult (position, index, uv, level, dataCoordinate) {
  this.position = position
  this.index = index
  this.uv = uv
  this.level = level
  this.dataCoordinate = dataCoordinate
}

var N_COLORS = 256

function genColormap (name) {
  var x = pack([colormap({
    colormap: name,
    nshades: N_COLORS,
    format: 'rgba'
  }).map(function (c) {
    return [c[0], c[1], c[2], 255 * c[3]]
  })])
  ops.divseq(x, 255.0)
  return x
}

function SurfacePlot (
  gl,
  shape,
  bounds,
  shader,
  pickShader,
  coordinates,
  vao,
  colorMap,
  contourShader,
  contourPickShader,
  contourBuffer,
  contourVAO,
  dynamicBuffer,
  dynamicVAO) {
  this.gl = gl
  this.shape = shape
  this.bounds = bounds
  this.intensityBounds = [];

  this._shader = shader
  this._pickShader = pickShader
  this._coordinateBuffer = coordinates
  this._vao = vao
  this._colorMap = colorMap

  this._contourShader = contourShader
  this._contourPickShader = contourPickShader
  this._contourBuffer = contourBuffer
  this._contourVAO = contourVAO
  this._contourOffsets = [[], [], []]
  this._contourCounts = [[], [], []]
  this._vertexCount = 0

  this._pickResult = new SurfacePickResult([0, 0, 0], [0, 0], [0, 0], [0, 0, 0], [0, 0, 0])

  this._dynamicBuffer = dynamicBuffer
  this._dynamicVAO = dynamicVAO
  this._dynamicOffsets = [0, 0, 0]
  this._dynamicCounts = [0, 0, 0]

  this.contourWidth = [ 1, 1, 1 ]
  this.contourLevels = [[1], [1], [1]]
  this.contourTint = [0, 0, 0]
  this.contourColor = [[0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1], [0.5, 0.5, 0.5, 1]]

  this.showContour = true
  this.showSurface = true

  this.enableHighlight = [true, true, true]
  this.highlightColor = [[0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1]]
  this.highlightTint = [ 1, 1, 1 ]
  this.highlightLevel = [-1, -1, -1]

  // Dynamic contour options
  this.enableDynamic = [ true, true, true ]
  this.dynamicLevel = [ NaN, NaN, NaN ]
  this.dynamicColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ]
  this.dynamicTint = [ 1, 1, 1 ]
  this.dynamicWidth = [ 1, 1, 1 ]

  this.axesBounds = [[Infinity, Infinity, Infinity], [-Infinity, -Infinity, -Infinity]]
  this.surfaceProject = [ false, false, false ]
  this.contourProject = [[ false, false, false ],
    [ false, false, false ],
    [ false, false, false ]]

  this.colorBounds = [ false, false ]

  // Store xyz fields, need this for picking
  this._field = [
    ndarray(pool.mallocFloat(1024), [0, 0]),
    ndarray(pool.mallocFloat(1024), [0, 0]),
    ndarray(pool.mallocFloat(1024), [0, 0]) ]

  this.pickId = 1
  this.clipBounds = [[-Infinity, -Infinity, -Infinity], [Infinity, Infinity, Infinity]]

  this.snapToData = false

  this.opacity = 1.0

  this.lightPosition = [10, 10000, 0]
  this.ambientLight = 0.8
  this.diffuseLight = 0.8
  this.specularLight = 2.0
  this.roughness = 0.5
  this.fresnel = 1.5
  this.vertexColor = 0;

  this.dirty = true
}

var proto = SurfacePlot.prototype

proto.isTransparent = function () {
  return this.opacity < 1
}

proto.isOpaque = function () {
  if (this.opacity >= 1) {
    return true
  }
  for (var i = 0; i < 3; ++i) {
    if (this._contourCounts[i].length > 0 || this._dynamicCounts[i] > 0) {
      return true
    }
  }
  return false
}

proto.pickSlots = 1

proto.setPickBase = function (id) {
  this.pickId = id
}

var ZERO_VEC = [0, 0, 0]

var PROJECT_DATA = {
  showSurface: false,
  showContour: false,
  projections: [IDENTITY.slice(), IDENTITY.slice(), IDENTITY.slice()],
  clipBounds: [
    [[0, 0, 0], [0, 0, 0]],
    [[0, 0, 0], [0, 0, 0]],
    [[0, 0, 0], [0, 0, 0]]]
}

function computeProjectionData (camera, obj) {
  var i, j, k

  // Compute cube properties
  var cubeAxis = (obj.axes && obj.axes.lastCubeProps.axis) || ZERO_VEC

  var showSurface = obj.showSurface
  var showContour = obj.showContour

  for (i = 0; i < 3; ++i) {
    showSurface = showSurface || obj.surfaceProject[i]
    for (j = 0; j < 3; ++j) {
      showContour = showContour || obj.contourProject[i][j]
    }
  }

  for (i = 0; i < 3; ++i) {
    // Construct projection onto axis
    var axisSquish = PROJECT_DATA.projections[i]
    for (j = 0; j < 16; ++j) {
      axisSquish[j] = 0
    }
    for (j = 0; j < 4; ++j) {
      axisSquish[5 * j] = 1
    }
    axisSquish[5 * i] = 0
    axisSquish[12 + i] = obj.axesBounds[+(cubeAxis[i] > 0)][i]
    multiply(axisSquish, camera.model, axisSquish)

    var nclipBounds = PROJECT_DATA.clipBounds[i]
    for (k = 0; k < 2; ++k) {
      for (j = 0; j < 3; ++j) {
        nclipBounds[k][j] = camera.clipBounds[k][j]
      }
    }
    nclipBounds[0][i] = -1e8
    nclipBounds[1][i] = 1e8
  }

  PROJECT_DATA.showSurface = showSurface
  PROJECT_DATA.showContour = showContour

  return PROJECT_DATA
}

var UNIFORMS = {
  model: IDENTITY,
  view: IDENTITY,
  projection: IDENTITY,
  inverseModel: IDENTITY.slice(),
  lowerBound: [0, 0, 0],
  upperBound: [0, 0, 0],
  colorMap: 0,
  clipBounds: [[0, 0, 0], [0, 0, 0]],
  height: 0.0,
  contourTint: 0,
  contourColor: [0, 0, 0, 1],
  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
  zOffset: -1e-4,
  kambient: 1,
  kdiffuse: 1,
  kspecular: 1,
  lightPosition: [1000, 1000, 1000],
  eyePosition: [0, 0, 0],
  roughness: 1,
  fresnel: 1,
  opacity: 1,
  vertexColor: 0
}

var MATRIX_INVERSE = IDENTITY.slice()
var DEFAULT_PERM = [1, 0, 0, 0, 1, 0, 0, 0, 1]

function drawCore (params, transparent) {
  params = params || {}
  var gl = this.gl

  gl.disable(gl.CULL_FACE)

  this._colorMap.bind(0)

  var uniforms = UNIFORMS
  uniforms.model = params.model || IDENTITY
  uniforms.view = params.view || IDENTITY
  uniforms.projection = params.projection || IDENTITY
  uniforms.lowerBound = [this.bounds[0][0], this.bounds[0][1], this.colorBounds[0] || this.bounds[0][2]]
  uniforms.upperBound = [this.bounds[1][0], this.bounds[1][1], this.colorBounds[1] || this.bounds[1][2]]
  uniforms.contourColor = this.contourColor[0]

  uniforms.inverseModel = invert(uniforms.inverseModel, uniforms.model)

  for (var i = 0; i < 2; ++i) {
    var clipClamped = uniforms.clipBounds[i]
    for (var j = 0; j < 3; ++j) {
      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
    }
  }

  uniforms.kambient = this.ambientLight
  uniforms.kdiffuse = this.diffuseLight
  uniforms.kspecular = this.specularLight

  uniforms.roughness = this.roughness
  uniforms.fresnel = this.fresnel
  uniforms.opacity = this.opacity

  uniforms.height = 0.0
  uniforms.permutation = DEFAULT_PERM

  uniforms.vertexColor = this.vertexColor

  // Compute camera matrix inverse
  var invCameraMatrix = MATRIX_INVERSE
  multiply(invCameraMatrix, uniforms.view, uniforms.model)
  multiply(invCameraMatrix, uniforms.projection, invCameraMatrix)
  invert(invCameraMatrix, invCameraMatrix)

  for (i = 0; i < 3; ++i) {
    uniforms.eyePosition[i] = invCameraMatrix[12 + i] / invCameraMatrix[15]
  }

  var w = invCameraMatrix[15]
  for (i = 0; i < 3; ++i) {
    w += this.lightPosition[i] * invCameraMatrix[4 * i + 3]
  }
  for (i = 0; i < 3; ++i) {
    var s = invCameraMatrix[12 + i]
    for (j = 0; j < 3; ++j) {
      s += invCameraMatrix[4 * j + i] * this.lightPosition[j]
    }
    uniforms.lightPosition[i] = s / w
  }

  var projectData = computeProjectionData(uniforms, this)

  if (projectData.showSurface && (transparent === (this.opacity < 1))) {
    // Set up uniforms
    this._shader.bind()
    this._shader.uniforms = uniforms

    // Draw it
    this._vao.bind()

    if (this.showSurface && this._vertexCount) {
      this._vao.draw(gl.TRIANGLES, this._vertexCount)
    }

    // Draw projections of surface
    for (i = 0; i < 3; ++i) {
      if (!this.surfaceProject[i] || !this.vertexCount) {
        continue
      }
      this._shader.uniforms.model = projectData.projections[i]
      this._shader.uniforms.clipBounds = projectData.clipBounds[i]
      this._vao.draw(gl.TRIANGLES, this._vertexCount)
    }

    this._vao.unbind()
  }

  if (projectData.showContour && !transparent) {
    var shader = this._contourShader

    // Don't apply lighting to contours
    uniforms.kambient = 1.0
    uniforms.kdiffuse = 0.0
    uniforms.kspecular = 0.0
    uniforms.opacity = 1.0

    shader.bind()
    shader.uniforms = uniforms

    // Draw contour lines
    var vao = this._contourVAO
    vao.bind()

    // Draw contour levels
    for (i = 0; i < 3; ++i) {
      shader.uniforms.permutation = PERMUTATIONS[i]
      gl.lineWidth(this.contourWidth[i])

      for (j = 0; j < this.contourLevels[i].length; ++j) {
        if (!this._contourCounts[i][j]) {
          continue
        }
        if (j === this.highlightLevel[i]) {
          shader.uniforms.contourColor = this.highlightColor[i]
          shader.uniforms.contourTint = this.highlightTint[i]
        } else if (j === 0 || (j - 1) === this.highlightLevel[i]) {
          shader.uniforms.contourColor = this.contourColor[i]
          shader.uniforms.contourTint = this.contourTint[i]
        }
        shader.uniforms.height = this.contourLevels[i][j]
        vao.draw(gl.LINES, this._contourCounts[i][j], this._contourOffsets[i][j])
      }
    }

    // Draw projections of surface
    for (i = 0; i < 3; ++i) {
      shader.uniforms.model = projectData.projections[i]
      shader.uniforms.clipBounds = projectData.clipBounds[i]
      for (j = 0; j < 3; ++j) {
        if (!this.contourProject[i][j]) {
          continue
        }
        shader.uniforms.permutation = PERMUTATIONS[j]
        gl.lineWidth(this.contourWidth[j])
        for (var k = 0; k < this.contourLevels[j].length; ++k) {
          if (k === this.highlightLevel[j]) {
            shader.uniforms.contourColor = this.highlightColor[j]
            shader.uniforms.contourTint = this.highlightTint[j]
          } else if (k === 0 || (k - 1) === this.highlightLevel[j]) {
            shader.uniforms.contourColor = this.contourColor[j]
            shader.uniforms.contourTint = this.contourTint[j]
          }
          shader.uniforms.height = this.contourLevels[j][k]
          vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
        }
      }
    }

    // Draw dynamic contours
    vao = this._dynamicVAO
    vao.bind()

    // Draw contour levels
    for (i = 0; i < 3; ++i) {
      if (this._dynamicCounts[i] === 0) {
        continue
      }

      shader.uniforms.model = uniforms.model
      shader.uniforms.clipBounds = uniforms.clipBounds
      shader.uniforms.permutation = PERMUTATIONS[i]
      gl.lineWidth(this.dynamicWidth[i])

      shader.uniforms.contourColor = this.dynamicColor[i]
      shader.uniforms.contourTint = this.dynamicTint[i]
      shader.uniforms.height = this.dynamicLevel[i]
      vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])

      for (j = 0; j < 3; ++j) {
        if (!this.contourProject[j][i]) {
          continue
        }

        shader.uniforms.model = projectData.projections[j]
        shader.uniforms.clipBounds = projectData.clipBounds[j]
        vao.draw(gl.LINES, this._dynamicCounts[i], this._dynamicOffsets[i])
      }
    }

    vao.unbind()
  }
}

proto.draw = function (params) {
  return drawCore.call(this, params, false)
}

proto.drawTransparent = function (params) {
  return drawCore.call(this, params, true)
}

var PICK_UNIFORMS = {
  model: IDENTITY,
  view: IDENTITY,
  projection: IDENTITY,
  inverseModel: IDENTITY,
  clipBounds: [[0, 0, 0], [0, 0, 0]],
  height: 0.0,
  shape: [0, 0],
  pickId: 0,
  lowerBound: [0, 0, 0],
  upperBound: [0, 0, 0],
  zOffset: 0.0,
  permutation: [1, 0, 0, 0, 1, 0, 0, 0, 1],
  lightPosition: [0, 0, 0],
  eyePosition: [0, 0, 0]
}

proto.drawPick = function (params) {
  params = params || {}
  var gl = this.gl
  gl.disable(gl.CULL_FACE)

  var uniforms = PICK_UNIFORMS
  uniforms.model = params.model || IDENTITY
  uniforms.view = params.view || IDENTITY
  uniforms.projection = params.projection || IDENTITY
  uniforms.shape = this._field[2].shape
  uniforms.pickId = this.pickId / 255.0
  uniforms.lowerBound = this.bounds[0]
  uniforms.upperBound = this.bounds[1]
  uniforms.permutation = DEFAULT_PERM

  for (var i = 0; i < 2; ++i) {
    var clipClamped = uniforms.clipBounds[i]
    for (var j = 0; j < 3; ++j) {
      clipClamped[j] = Math.min(Math.max(this.clipBounds[i][j], -1e8), 1e8)
    }
  }

  var projectData = computeProjectionData(uniforms, this)

  if (projectData.showSurface) {
    // Set up uniforms
    this._pickShader.bind()
    this._pickShader.uniforms = uniforms

    // Draw it
    this._vao.bind()
    this._vao.draw(gl.TRIANGLES, this._vertexCount)

    // Draw projections of surface
    for (i = 0; i < 3; ++i) {
      if (!this.surfaceProject[i]) {
        continue
      }
      this._pickShader.uniforms.model = projectData.projections[i]
      this._pickShader.uniforms.clipBounds = projectData.clipBounds[i]
      this._vao.draw(gl.TRIANGLES, this._vertexCount)
    }

    this._vao.unbind()
  }

  if (projectData.showContour) {
    var shader = this._contourPickShader

    shader.bind()
    shader.uniforms = uniforms

    var vao = this._contourVAO
    vao.bind()

    for (j = 0; j < 3; ++j) {
      gl.lineWidth(this.contourWidth[j])
      shader.uniforms.permutation = PERMUTATIONS[j]
      for (i = 0; i < this.contourLevels[j].length; ++i) {
        if (this._contourCounts[j][i]) {
          shader.uniforms.height = this.contourLevels[j][i]
          vao.draw(gl.LINES, this._contourCounts[j][i], this._contourOffsets[j][i])
        }
      }
    }

    // Draw projections of surface
    for (i = 0; i < 3; ++i) {
      shader.uniforms.model = projectData.projections[i]
      shader.uniforms.clipBounds = projectData.clipBounds[i]

      for (j = 0; j < 3; ++j) {
        if (!this.contourProject[i][j]) {
          continue
        }

        shader.uniforms.permutation = PERMUTATIONS[j]
        gl.lineWidth(this.contourWidth[j])
        for (var k = 0; k < this.contourLevels[j].length; ++k) {
          if (this._contourCounts[j][k]) {
            shader.uniforms.height = this.contourLevels[j][k]
            vao.draw(gl.LINES, this._contourCounts[j][k], this._contourOffsets[j][k])
          }
        }
      }
    }

    vao.unbind()
  }
}

proto.pick = function (selection) {
  if (!selection) {
    return null
  }

  if (selection.id !== this.pickId) {
    return null
  }

  var shape = this._field[2].shape

  var result = this._pickResult

  // Compute uv coordinate
  var x = shape[0] * (selection.value[0] + (selection.value[2] >> 4) / 16.0) / 255.0
  var ix = Math.floor(x)
  var fx = x - ix

  var y = shape[1] * (selection.value[1] + (selection.value[2] & 15) / 16.0) / 255.0
  var iy = Math.floor(y)
  var fy = y - iy

  ix += 1
  iy += 1

  // Compute xyz coordinate
  var pos = result.position
  pos[0] = pos[1] = pos[2] = 0
  for (var dx = 0; dx < 2; ++dx) {
    var s = dx ? fx : 1.0 - fx
    for (var dy = 0; dy < 2; ++dy) {
      var t = dy ? fy : 1.0 - fy

      var r = ix + dx
      var c = iy + dy
      var w = s * t

      for (var i = 0; i < 3; ++i) {
        pos[i] += this._field[i].get(r, c) * w
      }
    }
  }

  // Find closest level
  var levelIndex = this._pickResult.level
  for (var j = 0; j < 3; ++j) {
    levelIndex[j] = bsearch.le(this.contourLevels[j], pos[j])
    if (levelIndex[j] < 0) {
      if (this.contourLevels[j].length > 0) {
        levelIndex[j] = 0
      }
    } else if (levelIndex[j] < this.contourLevels[j].length - 1) {
      var a = this.contourLevels[j][levelIndex[j]]
      var b = this.contourLevels[j][levelIndex[j] + 1]
      if (Math.abs(a - pos[j]) > Math.abs(b - pos[j])) {
        levelIndex[j] += 1
      }
    }
  }

  result.index[0] = fx < 0.5 ? ix : (ix + 1)
  result.index[1] = fy < 0.5 ? iy : (iy + 1)

  result.uv[0] = x / shape[0]
  result.uv[1] = y / shape[1]

  for (i = 0; i < 3; ++i) {
    result.dataCoordinate[i] = this._field[i].get(result.index[0], result.index[1])
  }

  return result
}

function padField (nfield, field) {
  var shape = field.shape.slice()
  var nshape = nfield.shape.slice()

  // Center
  ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field)

  // Edges
  ops.assign(nfield.lo(1).hi(shape[0], 1),
    field.hi(shape[0], 1))
  ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
    field.lo(0, shape[1] - 1).hi(shape[0], 1))
  ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
    field.hi(1))
  ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
    field.lo(shape[0] - 1))
  // Corners
  nfield.set(0, 0, field.get(0, 0))
  nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1))
  nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0))
  nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1))
}

function handleArray (param, ctor) {
  if (Array.isArray(param)) {
    return [ ctor(param[0]), ctor(param[1]), ctor(param[2]) ]
  }
  return [ ctor(param), ctor(param), ctor(param) ]
}

function toColor (x) {
  if (Array.isArray(x)) {
    if (x.length === 3) {
      return [x[0], x[1], x[2], 1]
    }
    return [x[0], x[1], x[2], x[3]]
  }
  return [0, 0, 0, 1]
}

function handleColor (param) {
  if (Array.isArray(param)) {
    if (Array.isArray(param)) {
      return [
        toColor(param[0]),
        toColor(param[1]),
        toColor(param[2]) ]
    } else {
      var c = toColor(param)
      return [
        c.slice(),
        c.slice(),
        c.slice() ]
    }
  }
}

proto.update = function (params) {
  params = params || {}

  this.dirty = true

  if ('contourWidth' in params) {
    this.contourWidth = handleArray(params.contourWidth, Number)
  }
  if ('showContour' in params) {
    this.showContour = handleArray(params.showContour, Boolean)
  }
  if ('showSurface' in params) {
    this.showSurface = !!params.showSurface
  }
  if ('contourTint' in params) {
    this.contourTint = handleArray(params.contourTint, Boolean)
  }
  if ('contourColor' in params) {
    this.contourColor = handleColor(params.contourColor)
  }
  if ('contourProject' in params) {
    this.contourProject = handleArray(params.contourProject, function (x) {
      return handleArray(x, Boolean)
    })
  }
  if ('surfaceProject' in params) {
    this.surfaceProject = params.surfaceProject
  }
  if ('dynamicColor' in params) {
    this.dynamicColor = handleColor(params.dynamicColor)
  }
  if ('dynamicTint' in params) {
    this.dynamicTint = handleArray(params.dynamicTint, Number)
  }
  if ('dynamicWidth' in params) {
    this.dynamicWidth = handleArray(params.dynamicWidth, Number)
  }
  if ('opacity' in params) {
    this.opacity = params.opacity
  }
  if ('colorBounds' in params) {
    this.colorBounds = params.colorBounds
  }
  if ('vertexColor' in params) {
    this.vertexColor = params.vertexColor ? 1 : 0;
  }

  var field = params.field || (params.coords && params.coords[2]) || null
  var levelsChanged = false

  if (!field) {
    if (this._field[2].shape[0] || this._field[2].shape[2]) {
      field = this._field[2].lo(1, 1).hi(this._field[2].shape[0] - 2, this._field[2].shape[1] - 2)
    } else {
      field = this._field[2].hi(0, 0)
    }
  }

  // Update field
  if ('field' in params || 'coords' in params) {
    var fsize = (field.shape[0] + 2) * (field.shape[1] + 2)

    // Resize if necessary
    if (fsize > this._field[2].data.length) {
      pool.freeFloat(this._field[2].data)
      this._field[2].data = pool.mallocFloat(bits.nextPow2(fsize))
    }

    // Pad field
    this._field[2] = ndarray(this._field[2].data, [field.shape[0] + 2, field.shape[1] + 2])
    padField(this._field[2], field)

    // Save shape of field
    this.shape = field.shape.slice()
    var shape = this.shape

    // Resize coordinate fields if necessary
    for (var i = 0; i < 2; ++i) {
      if (this._field[2].size > this._field[i].data.length) {
        pool.freeFloat(this._field[i].data)
        this._field[i].data = pool.mallocFloat(this._field[2].size)
      }
      this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2])
    }

    // Generate x/y coordinates
    if (params.coords) {
      var coords = params.coords
      if (!Array.isArray(coords) || coords.length !== 3) {
        throw new Error('gl-surface: invalid coordinates for x/y')
      }
      for (i = 0; i < 2; ++i) {
        var coord = coords[i]
        for (j = 0; j < 2; ++j) {
          if (coord.shape[j] !== shape[j]) {
            throw new Error('gl-surface: coords have incorrect shape')
          }
        }
        padField(this._field[i], coord)
      }
    } else if (params.ticks) {
      var ticks = params.ticks
      if (!Array.isArray(ticks) || ticks.length !== 2) {
        throw new Error('gl-surface: invalid ticks')
      }
      for (i = 0; i < 2; ++i) {
        var tick = ticks[i]
        if (Array.isArray(tick) || tick.length) {
          tick = ndarray(tick)
        }
        if (tick.shape[0] !== shape[i]) {
          throw new Error('gl-surface: invalid tick length')
        }
        // Make a copy view of the tick array
        var tick2 = ndarray(tick.data, shape)
        tick2.stride[i] = tick.stride[0]
        tick2.stride[i ^ 1] = 0

        // Fill in field array
        padField(this._field[i], tick2)
      }
    } else {
      for (i = 0; i < 2; ++i) {
        var offset = [0, 0]
        offset[i] = 1
        this._field[i] = ndarray(this._field[i].data, [shape[0] + 2, shape[1] + 2], offset, 0)
      }
      this._field[0].set(0, 0, 0)
      for (var j = 0; j < shape[0]; ++j) {
        this._field[0].set(j + 1, 0, j)
      }
      this._field[0].set(shape[0] + 1, 0, shape[0] - 1)
      this._field[1].set(0, 0, 0)
      for (j = 0; j < shape[1]; ++j) {
        this._field[1].set(0, j + 1, j)
      }
      this._field[1].set(0, shape[1] + 1, shape[1] - 1)
    }

    // Save shape
    var fields = this._field

    // Compute surface normals
    var dfields = ndarray(pool.mallocFloat(fields[2].size * 3 * 2), [3, shape[0] + 2, shape[1] + 2, 2])
    for (i = 0; i < 3; ++i) {
      gradient(dfields.pick(i), fields[i], 'mirror')
    }
    var normals = ndarray(pool.mallocFloat(fields[2].size * 3), [shape[0] + 2, shape[1] + 2, 3])
    for (i = 0; i < shape[0] + 2; ++i) {
      for (j = 0; j < shape[1] + 2; ++j) {
        var dxdu = dfields.get(0, i, j, 0)
        var dxdv = dfields.get(0, i, j, 1)
        var dydu = dfields.get(1, i, j, 0)
        var dydv = dfields.get(1, i, j, 1)
        var dzdu = dfields.get(2, i, j, 0)
        var dzdv = dfields.get(2, i, j, 1)

        var nx = dydu * dzdv - dydv * dzdu
        var ny = dzdu * dxdv - dzdv * dxdu
        var nz = dxdu * dydv - dxdv * dydu

        var nl = Math.sqrt(nx * nx + ny * ny + nz * nz)
        if (nl < 1e-8) {
          nl = Math.max(Math.abs(nx), Math.abs(ny), Math.abs(nz))
          if (nl < 1e-8) {
            nz = 1.0
            ny = nx = 0.0
            nl = 1.0
          } else {
            nl = 1.0 / nl
          }
        } else {
          nl = 1.0 / Math.sqrt(nl)
        }

        normals.set(i, j, 0, nx * nl)
        normals.set(i, j, 1, ny * nl)
        normals.set(i, j, 2, nz * nl)
      }
    }
    pool.free(dfields.data)

    // Initialize surface
    var lo = [ Infinity, Infinity, Infinity ]
    var hi = [ -Infinity, -Infinity, -Infinity ]
    var lo_intensity = Infinity
    var hi_intensity = -Infinity
    var count = (shape[0] - 1) * (shape[1] - 1) * 6
    var tverts = pool.mallocFloat(bits.nextPow2(10 * count))
    var tptr = 0
    var vertexCount = 0
    for (i = 0; i < shape[0] - 1; ++i) {
      j_loop:
      for (j = 0; j < shape[1] - 1; ++j) {
        // Test for NaNs
        for (var dx = 0; dx < 2; ++dx) {
          for (var dy = 0; dy < 2; ++dy) {
            for (var k = 0; k < 3; ++k) {
              var f = this._field[k].get(1 + i + dx, 1 + j + dy)
              if (isNaN(f) || !isFinite(f)) {
                continue j_loop
              }
            }
          }
        }
        for (k = 0; k < 6; ++k) {
          var r = i + QUAD[k][0]
          var c = j + QUAD[k][1]

          var tx = this._field[0].get(r + 1, c + 1)
          var ty = this._field[1].get(r + 1, c + 1)
          f = this._field[2].get(r + 1, c + 1)
          var vf = f
          nx = normals.get(r + 1, c + 1, 0)
          ny = normals.get(r + 1, c + 1, 1)
          nz = normals.get(r + 1, c + 1, 2)

          if (params.intensity) {
            vf = params.intensity.get(r, c)
          }

          tverts[tptr++] = r
          tverts[tptr++] = c
          tverts[tptr++] = tx
          tverts[tptr++] = ty
          tverts[tptr++] = f
          tverts[tptr++] = 0
          tverts[tptr++] = vf
          tverts[tptr++] = nx
          tverts[tptr++] = ny
          tverts[tptr++] = nz

          lo[0] = Math.min(lo[0], tx)
          lo[1] = Math.min(lo[1], ty)
          lo[2] = Math.min(lo[2], f)
          lo_intensity = Math.min(lo_intensity, vf)

          hi[0] = Math.max(hi[0], tx)
          hi[1] = Math.max(hi[1], ty)
          hi[2] = Math.max(hi[2], f)
          hi_intensity = Math.max(hi_intensity, vf)

          vertexCount += 1
        }
      }
    }

    if (params.intensityBounds) {
      lo_intensity = +params.intensityBounds[0]
      hi_intensity = +params.intensityBounds[1]
    }

    // Scale all vertex intensities
    for (i = 6; i < tptr; i += 10) {
      tverts[i] = (tverts[i] - lo_intensity) / (hi_intensity - lo_intensity)
    }

    this._vertexCount = vertexCount
    this._coordinateBuffer.update(tverts.subarray(0, tptr))
    pool.freeFloat(tverts)
    pool.free(normals.data)

    // Update bounds
    this.bounds = [lo, hi]

    // Save intensity
    this.intensity = params.intensity || this._field[2]

    if(this.intensityBounds[0] !== lo_intensity || this.intensityBounds[1] !== hi_intensity) {
        levelsChanged = true
    }

    // Save intensity bound
    this.intensityBounds = [lo_intensity, hi_intensity]
  }

  // Update level crossings
  if ('levels' in params) {
    var levels = params.levels
    if (!Array.isArray(levels[0])) {
      levels = [ [], [], levels ]
    } else {
      levels = levels.slice()
    }
    for (i = 0; i < 3; ++i) {
      levels[i] = levels[i].slice()
      levels.sort(function (a, b) {
        return a - b
      })
    }
    change_test:
    for (i = 0; i < 3; ++i) {
      if (levels[i].length !== this.contourLevels[i].length) {
        levelsChanged = true
        break
      }
      for (j = 0; j < levels[i].length; ++j) {
        if (levels[i][j] !== this.contourLevels[i][j]) {
          levelsChanged = true
          break change_test
        }
      }
    }
    this.contourLevels = levels
  }

  if (levelsChanged) {
    fields = this._field
    shape = this.shape

    // Update contour lines
    var contourVerts = []

    for (var dim = 0; dim < 3; ++dim) {
      levels = this.contourLevels[dim]
      var levelOffsets = []
      var levelCounts = []

      var parts = [0, 0, 0]

      for (i = 0; i < levels.length; ++i) {
        var graph = surfaceNets(this._field[dim], levels[i])
        levelOffsets.push((contourVerts.length / 5) | 0)
        vertexCount = 0

        edge_loop:
        for (j = 0; j < graph.cells.length; ++j) {
          var e = graph.cells[j]
          for (k = 0; k < 2; ++k) {
            var p = graph.positions[e[k]]

            var x = p[0]
            var ix = Math.floor(x) | 0
            var fx = x - ix

            var y = p[1]
            var iy = Math.floor(y) | 0
            var fy = y - iy

            var hole = false
            dd_loop:
            for (var dd = 0; dd < 3; ++dd) {
              parts[dd] = 0.0
              var iu = (dim + dd + 1) % 3
              for (dx = 0; dx < 2; ++dx) {
                var s = dx ? fx : 1.0 - fx
                r = Math.min(Math.max(ix + dx, 0), shape[0]) | 0
                for (dy = 0; dy < 2; ++dy) {
                  var t = dy ? fy : 1.0 - fy
                  c = Math.min(Math.max(iy + dy, 0), shape[1]) | 0

                  if (dd < 2) {
                    f = this._field[iu].get(r, c)
                  } else {
                    f = (this.intensity.get(r, c) - this.intensityBounds[0]) / (this.intensityBounds[1] - this.intensityBounds[0])
                  }
                  if (!isFinite(f) || isNaN(f)) {
                    hole = true
                    break dd_loop
                  }

                  var w = s * t
                  parts[dd] += w * f
                }
              }
            }

            if (!hole) {
              contourVerts.push(parts[0], parts[1], p[0], p[1], parts[2])
              vertexCount += 1
            } else {
              if (k > 0) {
                // If we already added first edge, pop off verts
                for (var l = 0; l < 5; ++l) {
                  contourVerts.pop()
                }
                vertexCount -= 1
              }
              continue edge_loop
            }
          }
        }
        levelCounts.push(vertexCount)
      }

      // Store results
      this._contourOffsets[dim] = levelOffsets
      this._contourCounts[dim] = levelCounts
    }

    var floatBuffer = pool.mallocFloat(contourVerts.length)
    for (i = 0; i < contourVerts.length; ++i) {
      floatBuffer[i] = contourVerts[i]
    }
    this._contourBuffer.update(floatBuffer)
    pool.freeFloat(floatBuffer)
  }

  if (params.colormap) {
    this._colorMap.setPixels(genColormap(params.colormap))
  }
}

proto.dispose = function () {
  this._shader.dispose()
  this._vao.dispose()
  this._coordinateBuffer.dispose()
  this._colorMap.dispose()
  this._contourBuffer.dispose()
  this._contourVAO.dispose()
  this._contourShader.dispose()
  this._contourPickShader.dispose()
  this._dynamicBuffer.dispose()
  this._dynamicVAO.dispose()
  for (var i = 0; i < 3; ++i) {
    pool.freeFloat(this._field[i].data)
  }
}

proto.highlight = function (selection) {
  if (!selection) {
    this._dynamicCounts = [0, 0, 0]
    this.dyanamicLevel = [NaN, NaN, NaN]
    this.highlightLevel = [-1, -1, -1]
    return
  }

  for (var i = 0; i < 3; ++i) {
    if (this.enableHighlight[i]) {
      this.highlightLevel[i] = selection.level[i]
    } else {
      this.highlightLevel[i] = -1
    }
  }

  var levels
  if (this.snapToData) {
    levels = selection.dataCoordinate
  } else {
    levels = selection.position
  }
  if ((!this.enableDynamic[0] || levels[0] === this.dynamicLevel[0]) &&
    (!this.enableDynamic[1] || levels[1] === this.dynamicLevel[1]) &&
    (!this.enableDynamic[2] || levels[2] === this.dynamicLevel[2])) {
    return
  }

  var vertexCount = 0
  var shape = this.shape
  var scratchBuffer = pool.mallocFloat(12 * shape[0] * shape[1])

  for (var d = 0; d < 3; ++d) {
    if (!this.enableDynamic[d]) {
      this.dynamicLevel[d] = NaN
      this._dynamicCounts[d] = 0
      continue
    }

    this.dynamicLevel[d] = levels[d]

    var u = (d + 1) % 3
    var v = (d + 2) % 3

    var f = this._field[d]
    var g = this._field[u]
    var h = this._field[v]
    var intensity = this.intensity

    var graph = surfaceNets(f, levels[d])
    var edges = graph.cells
    var positions = graph.positions

    this._dynamicOffsets[d] = vertexCount

    for (i = 0; i < edges.length; ++i) {
      var e = edges[i]
      for (var j = 0; j < 2; ++j) {
        var p = positions[e[j]]

        var x = +p[0]
        var ix = x | 0
        var jx = Math.min(ix + 1, shape[0]) | 0
        var fx = x - ix
        var hx = 1.0 - fx

        var y = +p[1]
        var iy = y | 0
        var jy = Math.min(iy + 1, shape[1]) | 0
        var fy = y - iy
        var hy = 1.0 - fy

        var w00 = hx * hy
        var w01 = hx * fy
        var w10 = fx * hy
        var w11 = fx * fy

        var cu = w00 * g.get(ix, iy) +
          w01 * g.get(ix, jy) +
          w10 * g.get(jx, iy) +
          w11 * g.get(jx, jy)

        var cv = w00 * h.get(ix, iy) +
          w01 * h.get(ix, jy) +
          w10 * h.get(jx, iy) +
          w11 * h.get(jx, jy)

        if (isNaN(cu) || isNaN(cv)) {
          if (j) {
            vertexCount -= 1
          }
          break
        }

        scratchBuffer[2 * vertexCount + 0] = cu
        scratchBuffer[2 * vertexCount + 1] = cv

        vertexCount += 1
      }
    }

    this._dynamicCounts[d] = vertexCount - this._dynamicOffsets[d]
  }

  this._dynamicBuffer.update(scratchBuffer.subarray(0, 2 * vertexCount))
  pool.freeFloat(scratchBuffer)
}

function createSurfacePlot (params) {
  var gl = params.gl
  var shader = createShader(gl)
  var pickShader = createPickShader(gl)
  var contourShader = createContourShader(gl)
  var contourPickShader = createPickContourShader(gl)

  var coordinateBuffer = createBuffer(gl)
  var vao = createVAO(gl, [
    { buffer: coordinateBuffer,
      size: 4,
      stride: SURFACE_VERTEX_SIZE,
      offset: 0
    },
    { buffer: coordinateBuffer,
      size: 3,
      stride: SURFACE_VERTEX_SIZE,
      offset: 16
    },
    {
      buffer: coordinateBuffer,
      size: 3,
      stride: SURFACE_VERTEX_SIZE,
      offset: 28
    }
  ])

  var contourBuffer = createBuffer(gl)
  var contourVAO = createVAO(gl, [
    {
      buffer: contourBuffer,
      size: 4,
      stride: 20,
      offset: 0
    },
    {
      buffer: contourBuffer,
      size: 1,
      stride: 20,
      offset: 16
    }
  ])

  var dynamicBuffer = createBuffer(gl)
  var dynamicVAO = createVAO(gl, [
    {
      buffer: dynamicBuffer,
      size: 2,
      type: gl.FLOAT
    }])

  var cmap = createTexture(gl, 1, N_COLORS, gl.RGBA, gl.UNSIGNED_BYTE)
  cmap.minFilter = gl.LINEAR
  cmap.magFilter = gl.LINEAR

  var surface = new SurfacePlot(
    gl,
    [0, 0],
    [[0, 0, 0], [0, 0, 0]],
    shader,
    pickShader,
    coordinateBuffer,
    vao,
    cmap,
    contourShader,
    contourPickShader,
    contourBuffer,
    contourVAO,
    dynamicBuffer,
    dynamicVAO
  )

  var nparams = {
    levels: [[], [], []]
  }
  for (var id in params) {
    nparams[id] = params[id]
  }
  nparams.colormap = nparams.colormap || 'jet'

  surface.update(nparams)

  return surface
}

},{"./lib/shaders":237,"binary-search-bounds":32,"bit-twiddle":33,"colormap":62,"gl-buffer":132,"gl-mat4/invert":156,"gl-mat4/multiply":158,"gl-texture2d":239,"gl-vao":243,"ndarray":443,"ndarray-gradient":434,"ndarray-ops":437,"ndarray-pack":438,"surface-nets":982,"typedarray-pool":992}],239:[function(require,module,exports){
'use strict'

var ndarray = require('ndarray')
var ops     = require('ndarray-ops')
var pool    = require('typedarray-pool')

module.exports = createTexture2D

var linearTypes = null
var filterTypes = null
var wrapTypes   = null

function lazyInitLinearTypes(gl) {
  linearTypes = [
    gl.LINEAR,
    gl.NEAREST_MIPMAP_LINEAR,
    gl.LINEAR_MIPMAP_NEAREST,
    gl.LINEAR_MIPMAP_NEAREST
  ]
  filterTypes = [
    gl.NEAREST,
    gl.LINEAR,
    gl.NEAREST_MIPMAP_NEAREST,
    gl.NEAREST_MIPMAP_LINEAR,
    gl.LINEAR_MIPMAP_NEAREST,
    gl.LINEAR_MIPMAP_LINEAR
  ]
  wrapTypes = [
    gl.REPEAT,
    gl.CLAMP_TO_EDGE,
    gl.MIRRORED_REPEAT
  ]
}

function acceptTextureDOM (obj) {
  return (
    ('undefined' != typeof HTMLCanvasElement && obj instanceof HTMLCanvasElement) ||
    ('undefined' != typeof HTMLImageElement && obj instanceof HTMLImageElement) ||
    ('undefined' != typeof HTMLVideoElement && obj instanceof HTMLVideoElement) ||
    ('undefined' != typeof ImageData && obj instanceof ImageData))
}

var convertFloatToUint8 = function(out, inp) {
  ops.muls(out, inp, 255.0)
}

function reshapeTexture(tex, w, h) {
  var gl = tex.gl
  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  if(w < 0 || w > maxSize || h < 0 || h > maxSize) {
    throw new Error('gl-texture2d: Invalid texture size')
  }
  tex._shape = [w, h]
  tex.bind()
  gl.texImage2D(gl.TEXTURE_2D, 0, tex.format, w, h, 0, tex.format, tex.type, null)
  tex._mipLevels = [0]
  return tex
}

function Texture2D(gl, handle, width, height, format, type) {
  this.gl = gl
  this.handle = handle
  this.format = format
  this.type = type
  this._shape = [width, height]
  this._mipLevels = [0]
  this._magFilter = gl.NEAREST
  this._minFilter = gl.NEAREST
  this._wrapS = gl.CLAMP_TO_EDGE
  this._wrapT = gl.CLAMP_TO_EDGE
  this._anisoSamples = 1

  var parent = this
  var wrapVector = [this._wrapS, this._wrapT]
  Object.defineProperties(wrapVector, [
    {
      get: function() {
        return parent._wrapS
      },
      set: function(v) {
        return parent.wrapS = v
      }
    },
    {
      get: function() {
        return parent._wrapT
      },
      set: function(v) {
        return parent.wrapT = v
      }
    }
  ])
  this._wrapVector = wrapVector

  var shapeVector = [this._shape[0], this._shape[1]]
  Object.defineProperties(shapeVector, [
    {
      get: function() {
        return parent._shape[0]
      },
      set: function(v) {
        return parent.width = v
      }
    },
    {
      get: function() {
        return parent._shape[1]
      },
      set: function(v) {
        return parent.height = v
      }
    }
  ])
  this._shapeVector = shapeVector
}

var proto = Texture2D.prototype

Object.defineProperties(proto, {
  minFilter: {
    get: function() {
      return this._minFilter
    },
    set: function(v) {
      this.bind()
      var gl = this.gl
      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
        if(!gl.getExtension('OES_texture_float_linear')) {
          v = gl.NEAREST
        }
      }
      if(filterTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown filter mode ' + v)
      }
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, v)
      return this._minFilter = v
    }
  },
  magFilter: {
    get: function() {
      return this._magFilter
    },
    set: function(v) {
      this.bind()
      var gl = this.gl
      if(this.type === gl.FLOAT && linearTypes.indexOf(v) >= 0) {
        if(!gl.getExtension('OES_texture_float_linear')) {
          v = gl.NEAREST
        }
      }
      if(filterTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown filter mode ' + v)
      }
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, v)
      return this._magFilter = v
    }
  },
  mipSamples: {
    get: function() {
      return this._anisoSamples
    },
    set: function(i) {
      var psamples = this._anisoSamples
      this._anisoSamples = Math.max(i, 1)|0
      if(psamples !== this._anisoSamples) {
        var ext = this.gl.getExtension('EXT_texture_filter_anisotropic')
        if(ext) {
          this.gl.texParameterf(this.gl.TEXTURE_2D, ext.TEXTURE_MAX_ANISOTROPY_EXT, this._anisoSamples)
        }
      }
      return this._anisoSamples
    }
  },
  wrapS: {
    get: function() {
      return this._wrapS
    },
    set: function(v) {
      this.bind()
      if(wrapTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
      }
      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_S, v)
      return this._wrapS = v
    }
  },
  wrapT: {
    get: function() {
      return this._wrapT
    },
    set: function(v) {
      this.bind()
      if(wrapTypes.indexOf(v) < 0) {
        throw new Error('gl-texture2d: Unknown wrap mode ' + v)
      }
      this.gl.texParameteri(this.gl.TEXTURE_2D, this.gl.TEXTURE_WRAP_T, v)
      return this._wrapT = v
    }
  },
  wrap: {
    get: function() {
      return this._wrapVector
    },
    set: function(v) {
      if(!Array.isArray(v)) {
        v = [v,v]
      }
      if(v.length !== 2) {
        throw new Error('gl-texture2d: Must specify wrap mode for rows and columns')
      }
      for(var i=0; i<2; ++i) {
        if(wrapTypes.indexOf(v[i]) < 0) {
          throw new Error('gl-texture2d: Unknown wrap mode ' + v)
        }
      }
      this._wrapS = v[0]
      this._wrapT = v[1]

      var gl = this.gl
      this.bind()
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, this._wrapS)
      gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, this._wrapT)

      return v
    }
  },
  shape: {
    get: function() {
      return this._shapeVector
    },
    set: function(x) {
      if(!Array.isArray(x)) {
        x = [x|0,x|0]
      } else {
        if(x.length !== 2) {
          throw new Error('gl-texture2d: Invalid texture shape')
        }
      }
      reshapeTexture(this, x[0]|0, x[1]|0)
      return [x[0]|0, x[1]|0]
    }
  },
  width: {
    get: function() {
      return this._shape[0]
    },
    set: function(w) {
      w = w|0
      reshapeTexture(this, w, this._shape[1])
      return w
    }
  },
  height: {
    get: function() {
      return this._shape[1]
    },
    set: function(h) {
      h = h|0
      reshapeTexture(this, this._shape[0], h)
      return h
    }
  }
})

proto.bind = function(unit) {
  var gl = this.gl
  if(unit !== undefined) {
    gl.activeTexture(gl.TEXTURE0 + (unit|0))
  }
  gl.bindTexture(gl.TEXTURE_2D, this.handle)
  if(unit !== undefined) {
    return (unit|0)
  }
  return gl.getParameter(gl.ACTIVE_TEXTURE) - gl.TEXTURE0
}

proto.dispose = function() {
  this.gl.deleteTexture(this.handle)
}

proto.generateMipmap = function() {
  this.bind()
  this.gl.generateMipmap(this.gl.TEXTURE_2D)

  //Update mip levels
  var l = Math.min(this._shape[0], this._shape[1])
  for(var i=0; l>0; ++i, l>>>=1) {
    if(this._mipLevels.indexOf(i) < 0) {
      this._mipLevels.push(i)
    }
  }
}

proto.setPixels = function(data, x_off, y_off, mip_level) {
  var gl = this.gl
  this.bind()
  if(Array.isArray(x_off)) {
    mip_level = y_off
    y_off = x_off[1]|0
    x_off = x_off[0]|0
  } else {
    x_off = x_off || 0
    y_off = y_off || 0
  }
  mip_level = mip_level || 0
  var directData = acceptTextureDOM(data) ? data : data.raw
  if(directData) {
    var needsMip = this._mipLevels.indexOf(mip_level) < 0
    if(needsMip) {
      gl.texImage2D(gl.TEXTURE_2D, 0, this.format, this.format, this.type, directData)
      this._mipLevels.push(mip_level)
    } else {
      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, this.format, this.type, directData)
    }
  } else if(data.shape && data.stride && data.data) {
    if(data.shape.length < 2 ||
       x_off + data.shape[1] > this._shape[1]>>>mip_level ||
       y_off + data.shape[0] > this._shape[0]>>>mip_level ||
       x_off < 0 ||
       y_off < 0) {
      throw new Error('gl-texture2d: Texture dimensions are out of bounds')
    }
    texSubImageArray(gl, x_off, y_off, mip_level, this.format, this.type, this._mipLevels, data)
  } else {
    throw new Error('gl-texture2d: Unsupported data type')
  }
}


function isPacked(shape, stride) {
  if(shape.length === 3) {
    return  (stride[2] === 1) &&
            (stride[1] === shape[0]*shape[2]) &&
            (stride[0] === shape[2])
  }
  return  (stride[0] === 1) &&
          (stride[1] === shape[0])
}

function texSubImageArray(gl, x_off, y_off, mip_level, cformat, ctype, mipLevels, array) {
  var dtype = array.dtype
  var shape = array.shape.slice()
  if(shape.length < 2 || shape.length > 3) {
    throw new Error('gl-texture2d: Invalid ndarray, must be 2d or 3d')
  }
  var type = 0, format = 0
  var packed = isPacked(shape, array.stride.slice())
  if(dtype === 'float32') {
    type = gl.FLOAT
  } else if(dtype === 'float64') {
    type = gl.FLOAT
    packed = false
    dtype = 'float32'
  } else if(dtype === 'uint8') {
    type = gl.UNSIGNED_BYTE
  } else {
    type = gl.UNSIGNED_BYTE
    packed = false
    dtype = 'uint8'
  }
  var channels = 1
  if(shape.length === 2) {
    format = gl.LUMINANCE
    shape = [shape[0], shape[1], 1]
    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
  } else if(shape.length === 3) {
    if(shape[2] === 1) {
      format = gl.ALPHA
    } else if(shape[2] === 2) {
      format = gl.LUMINANCE_ALPHA
    } else if(shape[2] === 3) {
      format = gl.RGB
    } else if(shape[2] === 4) {
      format = gl.RGBA
    } else {
      throw new Error('gl-texture2d: Invalid shape for pixel coords')
    }
    channels = shape[2]
  } else {
    throw new Error('gl-texture2d: Invalid shape for texture')
  }
  //For 1-channel textures allow conversion between formats
  if((format  === gl.LUMINANCE || format  === gl.ALPHA) &&
     (cformat === gl.LUMINANCE || cformat === gl.ALPHA)) {
    format = cformat
  }
  if(format !== cformat) {
    throw new Error('gl-texture2d: Incompatible texture format for setPixels')
  }
  var size = array.size
  var needsMip = mipLevels.indexOf(mip_level) < 0
  if(needsMip) {
    mipLevels.push(mip_level)
  }
  if(type === ctype && packed) {
    //Array data types are compatible, can directly copy into texture
    if(array.offset === 0 && array.data.length === size) {
      if(needsMip) {
        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data)
      } else {
        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data)
      }
    } else {
      if(needsMip) {
        gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, array.data.subarray(array.offset, array.offset+size))
      } else {
        gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, array.data.subarray(array.offset, array.offset+size))
      }
    }
  } else {
    //Need to do type conversion to pack data into buffer
    var pack_buffer
    if(ctype === gl.FLOAT) {
      pack_buffer = pool.mallocFloat32(size)
    } else {
      pack_buffer = pool.mallocUint8(size)
    }
    var pack_view = ndarray(pack_buffer, shape, [shape[2], shape[2]*shape[0], 1])
    if(type === gl.FLOAT && ctype === gl.UNSIGNED_BYTE) {
      convertFloatToUint8(pack_view, array)
    } else {
      ops.assign(pack_view, array)
    }
    if(needsMip) {
      gl.texImage2D(gl.TEXTURE_2D, mip_level, cformat, shape[0], shape[1], 0, cformat, ctype, pack_buffer.subarray(0, size))
    } else {
      gl.texSubImage2D(gl.TEXTURE_2D, mip_level, x_off, y_off, shape[0], shape[1], cformat, ctype, pack_buffer.subarray(0, size))
    }
    if(ctype === gl.FLOAT) {
      pool.freeFloat32(pack_buffer)
    } else {
      pool.freeUint8(pack_buffer)
    }
  }
}

function initTexture(gl) {
  var tex = gl.createTexture()
  gl.bindTexture(gl.TEXTURE_2D, tex)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
  gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
  return tex
}

function createTextureShape(gl, width, height, format, type) {
  var maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  if(width < 0 || width > maxTextureSize || height < 0 || height  > maxTextureSize) {
    throw new Error('gl-texture2d: Invalid texture shape')
  }
  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
    throw new Error('gl-texture2d: Floating point textures not supported on this platform')
  }
  var tex = initTexture(gl)
  gl.texImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, format, type, null)
  return new Texture2D(gl, tex, width, height, format, type)
}

function createTextureDOM(gl, directData, width, height, format, type) {
  var tex = initTexture(gl)
  gl.texImage2D(gl.TEXTURE_2D, 0, format, format, type, directData)
  return new Texture2D(gl, tex, width, height, format, type)
}

//Creates a texture from an ndarray
function createTextureArray(gl, array) {
  var dtype = array.dtype
  var shape = array.shape.slice()
  var maxSize = gl.getParameter(gl.MAX_TEXTURE_SIZE)
  if(shape[0] < 0 || shape[0] > maxSize || shape[1] < 0 || shape[1] > maxSize) {
    throw new Error('gl-texture2d: Invalid texture size')
  }
  var packed = isPacked(shape, array.stride.slice())
  var type = 0
  if(dtype === 'float32') {
    type = gl.FLOAT
  } else if(dtype === 'float64') {
    type = gl.FLOAT
    packed = false
    dtype = 'float32'
  } else if(dtype === 'uint8') {
    type = gl.UNSIGNED_BYTE
  } else {
    type = gl.UNSIGNED_BYTE
    packed = false
    dtype = 'uint8'
  }
  var format = 0
  if(shape.length === 2) {
    format = gl.LUMINANCE
    shape = [shape[0], shape[1], 1]
    array = ndarray(array.data, shape, [array.stride[0], array.stride[1], 1], array.offset)
  } else if(shape.length === 3) {
    if(shape[2] === 1) {
      format = gl.ALPHA
    } else if(shape[2] === 2) {
      format = gl.LUMINANCE_ALPHA
    } else if(shape[2] === 3) {
      format = gl.RGB
    } else if(shape[2] === 4) {
      format = gl.RGBA
    } else {
      throw new Error('gl-texture2d: Invalid shape for pixel coords')
    }
  } else {
    throw new Error('gl-texture2d: Invalid shape for texture')
  }
  if(type === gl.FLOAT && !gl.getExtension('OES_texture_float')) {
    type = gl.UNSIGNED_BYTE
    packed = false
  }
  var buffer, buf_store
  var size = array.size
  if(!packed) {
    var stride = [shape[2], shape[2]*shape[0], 1]
    buf_store = pool.malloc(size, dtype)
    var buf_array = ndarray(buf_store, shape, stride, 0)
    if((dtype === 'float32' || dtype === 'float64') && type === gl.UNSIGNED_BYTE) {
      convertFloatToUint8(buf_array, array)
    } else {
      ops.assign(buf_array, array)
    }
    buffer = buf_store.subarray(0, size)
  } else if (array.offset === 0 && array.data.length === size) {
    buffer = array.data
  } else {
    buffer = array.data.subarray(array.offset, array.offset + size)
  }
  var tex = initTexture(gl)
  gl.texImage2D(gl.TEXTURE_2D, 0, format, shape[0], shape[1], 0, format, type, buffer)
  if(!packed) {
    pool.free(buf_store)
  }
  return new Texture2D(gl, tex, shape[0], shape[1], format, type)
}

function createTexture2D(gl) {
  if(arguments.length <= 1) {
    throw new Error('gl-texture2d: Missing arguments for texture2d constructor')
  }
  if(!linearTypes) {
    lazyInitLinearTypes(gl)
  }
  if(typeof arguments[1] === 'number') {
    return createTextureShape(gl, arguments[1], arguments[2], arguments[3]||gl.RGBA, arguments[4]||gl.UNSIGNED_BYTE)
  }
  if(Array.isArray(arguments[1])) {
    return createTextureShape(gl, arguments[1][0]|0, arguments[1][1]|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
  }
  if(typeof arguments[1] === 'object') {
    var obj = arguments[1]
    var directData = acceptTextureDOM(obj) ? obj : obj.raw
    if (directData) {
      return createTextureDOM(gl, directData, obj.width|0, obj.height|0, arguments[2]||gl.RGBA, arguments[3]||gl.UNSIGNED_BYTE)
    } else if(obj.shape && obj.data && obj.stride) {
      return createTextureArray(gl, obj)
    }
  }
  throw new Error('gl-texture2d: Invalid arguments for texture2d constructor')
}

},{"ndarray":443,"ndarray-ops":437,"typedarray-pool":992}],240:[function(require,module,exports){
"use strict"

function doBind(gl, elements, attributes) {
  if(elements) {
    elements.bind()
  } else {
    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null)
  }
  var nattribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS)|0
  if(attributes) {
    if(attributes.length > nattribs) {
      throw new Error("gl-vao: Too many vertex attributes")
    }
    for(var i=0; i<attributes.length; ++i) {
      var attrib = attributes[i]
      if(attrib.buffer) {
        var buffer = attrib.buffer
        var size = attrib.size || 4
        var type = attrib.type || gl.FLOAT
        var normalized = !!attrib.normalized
        var stride = attrib.stride || 0
        var offset = attrib.offset || 0
        buffer.bind()
        gl.enableVertexAttribArray(i)
        gl.vertexAttribPointer(i, size, type, normalized, stride, offset)
      } else {
        if(typeof attrib === "number") {
          gl.vertexAttrib1f(i, attrib)
        } else if(attrib.length === 1) {
          gl.vertexAttrib1f(i, attrib[0])
        } else if(attrib.length === 2) {
          gl.vertexAttrib2f(i, attrib[0], attrib[1])
        } else if(attrib.length === 3) {
          gl.vertexAttrib3f(i, attrib[0], attrib[1], attrib[2])
        } else if(attrib.length === 4) {
          gl.vertexAttrib4f(i, attrib[0], attrib[1], attrib[2], attrib[3])
        } else {
          throw new Error("gl-vao: Invalid vertex attribute")
        }
        gl.disableVertexAttribArray(i)
      }
    }
    for(; i<nattribs; ++i) {
      gl.disableVertexAttribArray(i)
    }
  } else {
    gl.bindBuffer(gl.ARRAY_BUFFER, null)
    for(var i=0; i<nattribs; ++i) {
      gl.disableVertexAttribArray(i)
    }
  }
}

module.exports = doBind
},{}],241:[function(require,module,exports){
"use strict"

var bindAttribs = require("./do-bind.js")

function VAOEmulated(gl) {
  this.gl = gl
  this._elements = null
  this._attributes = null
  this._elementsType = gl.UNSIGNED_SHORT
}

VAOEmulated.prototype.bind = function() {
  bindAttribs(this.gl, this._elements, this._attributes)
}

VAOEmulated.prototype.update = function(attributes, elements, elementsType) {
  this._elements = elements
  this._attributes = attributes
  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
}

VAOEmulated.prototype.dispose = function() { }
VAOEmulated.prototype.unbind = function() { }

VAOEmulated.prototype.draw = function(mode, count, offset) {
  offset = offset || 0
  var gl = this.gl
  if(this._elements) {
    gl.drawElements(mode, count, this._elementsType, offset)
  } else {
    gl.drawArrays(mode, offset, count)
  }
}

function createVAOEmulated(gl) {
  return new VAOEmulated(gl)
}

module.exports = createVAOEmulated
},{"./do-bind.js":240}],242:[function(require,module,exports){
"use strict"

var bindAttribs = require("./do-bind.js")

function VertexAttribute(location, dimension, a, b, c, d) {
  this.location = location
  this.dimension = dimension
  this.a = a
  this.b = b
  this.c = c
  this.d = d
}

VertexAttribute.prototype.bind = function(gl) {
  switch(this.dimension) {
    case 1:
      gl.vertexAttrib1f(this.location, this.a)
    break
    case 2:
      gl.vertexAttrib2f(this.location, this.a, this.b)
    break
    case 3:
      gl.vertexAttrib3f(this.location, this.a, this.b, this.c)
    break
    case 4:
      gl.vertexAttrib4f(this.location, this.a, this.b, this.c, this.d)
    break
  }
}

function VAONative(gl, ext, handle) {
  this.gl = gl
  this._ext = ext
  this.handle = handle
  this._attribs = []
  this._useElements = false
  this._elementsType = gl.UNSIGNED_SHORT
}

VAONative.prototype.bind = function() {
  this._ext.bindVertexArrayOES(this.handle)
  for(var i=0; i<this._attribs.length; ++i) {
    this._attribs[i].bind(this.gl)
  }
}

VAONative.prototype.unbind = function() {
  this._ext.bindVertexArrayOES(null)
}

VAONative.prototype.dispose = function() {
  this._ext.deleteVertexArrayOES(this.handle)
}

VAONative.prototype.update = function(attributes, elements, elementsType) {
  this.bind()
  bindAttribs(this.gl, elements, attributes)
  this.unbind()
  this._attribs.length = 0
  if(attributes)
  for(var i=0; i<attributes.length; ++i) {
    var a = attributes[i]
    if(typeof a === "number") {
      this._attribs.push(new VertexAttribute(i, 1, a))
    } else if(Array.isArray(a)) {
      this._attribs.push(new VertexAttribute(i, a.length, a[0], a[1], a[2], a[3]))
    }
  }
  this._useElements = !!elements
  this._elementsType = elementsType || this.gl.UNSIGNED_SHORT
}

VAONative.prototype.draw = function(mode, count, offset) {
  offset = offset || 0
  var gl = this.gl
  if(this._useElements) {
    gl.drawElements(mode, count, this._elementsType, offset)
  } else {
    gl.drawArrays(mode, offset, count)
  }
}

function createVAONative(gl, ext) {
  return new VAONative(gl, ext, ext.createVertexArrayOES())
}

module.exports = createVAONative
},{"./do-bind.js":240}],243:[function(require,module,exports){
"use strict"

var createVAONative = require("./lib/vao-native.js")
var createVAOEmulated = require("./lib/vao-emulated.js")

function ExtensionShim (gl) {
  this.bindVertexArrayOES = gl.bindVertexArray.bind(gl)
  this.createVertexArrayOES = gl.createVertexArray.bind(gl)
  this.deleteVertexArrayOES = gl.deleteVertexArray.bind(gl)
}

function createVAO(gl, attributes, elements, elementsType) {
  var ext = gl.createVertexArray
    ? new ExtensionShim(gl)
    : gl.getExtension('OES_vertex_array_object')
  var vao

  if(ext) {
    vao = createVAONative(gl, ext)
  } else {
    vao = createVAOEmulated(gl)
  }
  vao.update(attributes, elements, elementsType)
  return vao
}

module.exports = createVAO

},{"./lib/vao-emulated.js":241,"./lib/vao-native.js":242}],244:[function(require,module,exports){
module.exports = cross;

/**
 * Computes the cross product of two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {vec3} out
 */
function cross(out, a, b) {
    var ax = a[0], ay = a[1], az = a[2],
        bx = b[0], by = b[1], bz = b[2]

    out[0] = ay * bz - az * by
    out[1] = az * bx - ax * bz
    out[2] = ax * by - ay * bx
    return out
}
},{}],245:[function(require,module,exports){
module.exports = dot;

/**
 * Calculates the dot product of two vec3's
 *
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @returns {Number} dot product of a and b
 */
function dot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]
}
},{}],246:[function(require,module,exports){
module.exports = length;

/**
 * Calculates the length of a vec3
 *
 * @param {vec3} a vector to calculate length of
 * @returns {Number} length of a
 */
function length(a) {
    var x = a[0],
        y = a[1],
        z = a[2]
    return Math.sqrt(x*x + y*y + z*z)
}
},{}],247:[function(require,module,exports){
module.exports = lerp;

/**
 * Performs a linear interpolation between two vec3's
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a the first operand
 * @param {vec3} b the second operand
 * @param {Number} t interpolation amount between the two inputs
 * @returns {vec3} out
 */
function lerp(out, a, b, t) {
    var ax = a[0],
        ay = a[1],
        az = a[2]
    out[0] = ax + t * (b[0] - ax)
    out[1] = ay + t * (b[1] - ay)
    out[2] = az + t * (b[2] - az)
    return out
}
},{}],248:[function(require,module,exports){
module.exports = normalize;

/**
 * Normalize a vec3
 *
 * @param {vec3} out the receiving vector
 * @param {vec3} a vector to normalize
 * @returns {vec3} out
 */
function normalize(out, a) {
    var x = a[0],
        y = a[1],
        z = a[2]
    var len = x*x + y*y + z*z
    if (len > 0) {
        //TODO: evaluate use of glm_invsqrt here?
        len = 1 / Math.sqrt(len)
        out[0] = a[0] * len
        out[1] = a[1] * len
        out[2] = a[2] * len
    }
    return out
}
},{}],249:[function(require,module,exports){
module.exports = transformMat4

/**
 * Transforms the vec4 with a mat4.
 *
 * @param {vec4} out the receiving vector
 * @param {vec4} a the vector to transform
 * @param {mat4} m matrix to transform with
 * @returns {vec4} out
 */
function transformMat4 (out, a, m) {
  var x = a[0], y = a[1], z = a[2], w = a[3]
  out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w
  out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w
  out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w
  out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w
  return out
}

},{}],250:[function(require,module,exports){
module.exports = decodeFloat

var UINT8_VIEW = new Uint8Array(4)
var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)

function decodeFloat(x, y, z, w) {
  UINT8_VIEW[0] = w
  UINT8_VIEW[1] = z
  UINT8_VIEW[2] = y
  UINT8_VIEW[3] = x
  return FLOAT_VIEW[0]
}

},{}],251:[function(require,module,exports){
var tokenize = require('glsl-tokenizer')
var atob     = require('atob-lite')

module.exports = getName

function getName(src) {
  var tokens = Array.isArray(src)
    ? src
    : tokenize(src)

  for (var i = 0; i < tokens.length; i++) {
    var token = tokens[i]
    if (token.type !== 'preprocessor') continue
    var match = token.data.match(/\#define\s+SHADER_NAME(_B64)?\s+(.+)$/)
    if (!match) continue
    if (!match[2]) continue

    var b64  = match[1]
    var name = match[2]

    return (b64 ? atob(name) : name).trim()
  }
}

},{"atob-lite":10,"glsl-tokenizer":258}],252:[function(require,module,exports){
module.exports = tokenize

var literals100 = require('./lib/literals')
  , operators = require('./lib/operators')
  , builtins100 = require('./lib/builtins')
  , literals300es = require('./lib/literals-300es')
  , builtins300es = require('./lib/builtins-300es')

var NORMAL = 999          // <-- never emitted
  , TOKEN = 9999          // <-- never emitted
  , BLOCK_COMMENT = 0
  , LINE_COMMENT = 1
  , PREPROCESSOR = 2
  , OPERATOR = 3
  , INTEGER = 4
  , FLOAT = 5
  , IDENT = 6
  , BUILTIN = 7
  , KEYWORD = 8
  , WHITESPACE = 9
  , EOF = 10
  , HEX = 11

var map = [
    'block-comment'
  , 'line-comment'
  , 'preprocessor'
  , 'operator'
  , 'integer'
  , 'float'
  , 'ident'
  , 'builtin'
  , 'keyword'
  , 'whitespace'
  , 'eof'
  , 'integer'
]

function tokenize(opt) {
  var i = 0
    , total = 0
    , mode = NORMAL
    , c
    , last
    , content = []
    , tokens = []
    , token_idx = 0
    , token_offs = 0
    , line = 1
    , col = 0
    , start = 0
    , isnum = false
    , isoperator = false
    , input = ''
    , len

  opt = opt || {}
  var allBuiltins = builtins100
  var allLiterals = literals100
  if (opt.version === '300 es') {
    allBuiltins = builtins300es
    allLiterals = literals300es
  }

  return function(data) {
    tokens = []
    if (data !== null) return write(data.replace ? data.replace(/\r\n/g, '\n') : data)
    return end()
  }

  function token(data) {
    if (data.length) {
      tokens.push({
        type: map[mode]
      , data: data
      , position: start
      , line: line
      , column: col
      })
    }
  }

  function write(chunk) {
    i = 0
    input += chunk
    len = input.length

    var last

    while(c = input[i], i < len) {
      last = i

      switch(mode) {
        case BLOCK_COMMENT: i = block_comment(); break
        case LINE_COMMENT: i = line_comment(); break
        case PREPROCESSOR: i = preprocessor(); break
        case OPERATOR: i = operator(); break
        case INTEGER: i = integer(); break
        case HEX: i = hex(); break
        case FLOAT: i = decimal(); break
        case TOKEN: i = readtoken(); break
        case WHITESPACE: i = whitespace(); break
        case NORMAL: i = normal(); break
      }

      if(last !== i) {
        switch(input[last]) {
          case '\n': col = 0; ++line; break
          default: ++col; break
        }
      }
    }

    total += i
    input = input.slice(i)
    return tokens
  }

  function end(chunk) {
    if(content.length) {
      token(content.join(''))
    }

    mode = EOF
    token('(eof)')
    return tokens
  }

  function normal() {
    content = content.length ? [] : content

    if(last === '/' && c === '*') {
      start = total + i - 1
      mode = BLOCK_COMMENT
      last = c
      return i + 1
    }

    if(last === '/' && c === '/') {
      start = total + i - 1
      mode = LINE_COMMENT
      last = c
      return i + 1
    }

    if(c === '#') {
      mode = PREPROCESSOR
      start = total + i
      return i
    }

    if(/\s/.test(c)) {
      mode = WHITESPACE
      start = total + i
      return i
    }

    isnum = /\d/.test(c)
    isoperator = /[^\w_]/.test(c)

    start = total + i
    mode = isnum ? INTEGER : isoperator ? OPERATOR : TOKEN
    return i
  }

  function whitespace() {
    if(/[^\s]/g.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }
    content.push(c)
    last = c
    return i + 1
  }

  function preprocessor() {
    if((c === '\r' || c === '\n') && last !== '\\') {
      token(content.join(''))
      mode = NORMAL
      return i
    }
    content.push(c)
    last = c
    return i + 1
  }

  function line_comment() {
    return preprocessor()
  }

  function block_comment() {
    if(c === '/' && last === '*') {
      content.push(c)
      token(content.join(''))
      mode = NORMAL
      return i + 1
    }

    content.push(c)
    last = c
    return i + 1
  }

  function operator() {
    if(last === '.' && /\d/.test(c)) {
      mode = FLOAT
      return i
    }

    if(last === '/' && c === '*') {
      mode = BLOCK_COMMENT
      return i
    }

    if(last === '/' && c === '/') {
      mode = LINE_COMMENT
      return i
    }

    if(c === '.' && content.length) {
      while(determine_operator(content));

      mode = FLOAT
      return i
    }

    if(c === ';' || c === ')' || c === '(') {
      if(content.length) while(determine_operator(content));
      token(c)
      mode = NORMAL
      return i + 1
    }

    var is_composite_operator = content.length === 2 && c !== '='
    if(/[\w_\d\s]/.test(c) || is_composite_operator) {
      while(determine_operator(content));
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function determine_operator(buf) {
    var j = 0
      , idx
      , res

    do {
      idx = operators.indexOf(buf.slice(0, buf.length + j).join(''))
      res = operators[idx]

      if(idx === -1) {
        if(j-- + buf.length > 0) continue
        res = buf.slice(0, 1).join('')
      }

      token(res)

      start += res.length
      content = content.slice(res.length)
      return content.length
    } while(1)
  }

  function hex() {
    if(/[^a-fA-F0-9]/.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function integer() {
    if(c === '.') {
      content.push(c)
      mode = FLOAT
      last = c
      return i + 1
    }

    if(/[eE]/.test(c)) {
      content.push(c)
      mode = FLOAT
      last = c
      return i + 1
    }

    if(c === 'x' && content.length === 1 && content[0] === '0') {
      mode = HEX
      content.push(c)
      last = c
      return i + 1
    }

    if(/[^\d]/.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function decimal() {
    if(c === 'f') {
      content.push(c)
      last = c
      i += 1
    }

    if(/[eE]/.test(c)) {
      content.push(c)
      last = c
      return i + 1
    }

    if (c === '-' && /[eE]/.test(last)) {
      content.push(c)
      last = c
      return i + 1
    }

    if(/[^\d]/.test(c)) {
      token(content.join(''))
      mode = NORMAL
      return i
    }

    content.push(c)
    last = c
    return i + 1
  }

  function readtoken() {
    if(/[^\d\w_]/.test(c)) {
      var contentstr = content.join('')
      if(allLiterals.indexOf(contentstr) > -1) {
        mode = KEYWORD
      } else if(allBuiltins.indexOf(contentstr) > -1) {
        mode = BUILTIN
      } else {
        mode = IDENT
      }
      token(content.join(''))
      mode = NORMAL
      return i
    }
    content.push(c)
    last = c
    return i + 1
  }
}

},{"./lib/builtins":254,"./lib/builtins-300es":253,"./lib/literals":256,"./lib/literals-300es":255,"./lib/operators":257}],253:[function(require,module,exports){
// 300es builtins/reserved words that were previously valid in v100
var v100 = require('./builtins')

// The texture2D|Cube functions have been removed
// And the gl_ features are updated
v100 = v100.slice().filter(function (b) {
  return !/^(gl\_|texture)/.test(b)
})

module.exports = v100.concat([
  // the updated gl_ constants
    'gl_VertexID'
  , 'gl_InstanceID'
  , 'gl_Position'
  , 'gl_PointSize'
  , 'gl_FragCoord'
  , 'gl_FrontFacing'
  , 'gl_FragDepth'
  , 'gl_PointCoord'
  , 'gl_MaxVertexAttribs'
  , 'gl_MaxVertexUniformVectors'
  , 'gl_MaxVertexOutputVectors'
  , 'gl_MaxFragmentInputVectors'
  , 'gl_MaxVertexTextureImageUnits'
  , 'gl_MaxCombinedTextureImageUnits'
  , 'gl_MaxTextureImageUnits'
  , 'gl_MaxFragmentUniformVectors'
  , 'gl_MaxDrawBuffers'
  , 'gl_MinProgramTexelOffset'
  , 'gl_MaxProgramTexelOffset'
  , 'gl_DepthRangeParameters'
  , 'gl_DepthRange'

  // other builtins
  , 'trunc'
  , 'round'
  , 'roundEven'
  , 'isnan'
  , 'isinf'
  , 'floatBitsToInt'
  , 'floatBitsToUint'
  , 'intBitsToFloat'
  , 'uintBitsToFloat'
  , 'packSnorm2x16'
  , 'unpackSnorm2x16'
  , 'packUnorm2x16'
  , 'unpackUnorm2x16'
  , 'packHalf2x16'
  , 'unpackHalf2x16'
  , 'outerProduct'
  , 'transpose'
  , 'determinant'
  , 'inverse'
  , 'texture'
  , 'textureSize'
  , 'textureProj'
  , 'textureLod'
  , 'textureOffset'
  , 'texelFetch'
  , 'texelFetchOffset'
  , 'textureProjOffset'
  , 'textureLodOffset'
  , 'textureProjLod'
  , 'textureProjLodOffset'
  , 'textureGrad'
  , 'textureGradOffset'
  , 'textureProjGrad'
  , 'textureProjGradOffset'
])

},{"./builtins":254}],254:[function(require,module,exports){
module.exports = [
  // Keep this list sorted
  'abs'
  , 'acos'
  , 'all'
  , 'any'
  , 'asin'
  , 'atan'
  , 'ceil'
  , 'clamp'
  , 'cos'
  , 'cross'
  , 'dFdx'
  , 'dFdy'
  , 'degrees'
  , 'distance'
  , 'dot'
  , 'equal'
  , 'exp'
  , 'exp2'
  , 'faceforward'
  , 'floor'
  , 'fract'
  , 'gl_BackColor'
  , 'gl_BackLightModelProduct'
  , 'gl_BackLightProduct'
  , 'gl_BackMaterial'
  , 'gl_BackSecondaryColor'
  , 'gl_ClipPlane'
  , 'gl_ClipVertex'
  , 'gl_Color'
  , 'gl_DepthRange'
  , 'gl_DepthRangeParameters'
  , 'gl_EyePlaneQ'
  , 'gl_EyePlaneR'
  , 'gl_EyePlaneS'
  , 'gl_EyePlaneT'
  , 'gl_Fog'
  , 'gl_FogCoord'
  , 'gl_FogFragCoord'
  , 'gl_FogParameters'
  , 'gl_FragColor'
  , 'gl_FragCoord'
  , 'gl_FragData'
  , 'gl_FragDepth'
  , 'gl_FragDepthEXT'
  , 'gl_FrontColor'
  , 'gl_FrontFacing'
  , 'gl_FrontLightModelProduct'
  , 'gl_FrontLightProduct'
  , 'gl_FrontMaterial'
  , 'gl_FrontSecondaryColor'
  , 'gl_LightModel'
  , 'gl_LightModelParameters'
  , 'gl_LightModelProducts'
  , 'gl_LightProducts'
  , 'gl_LightSource'
  , 'gl_LightSourceParameters'
  , 'gl_MaterialParameters'
  , 'gl_MaxClipPlanes'
  , 'gl_MaxCombinedTextureImageUnits'
  , 'gl_MaxDrawBuffers'
  , 'gl_MaxFragmentUniformComponents'
  , 'gl_MaxLights'
  , 'gl_MaxTextureCoords'
  , 'gl_MaxTextureImageUnits'
  , 'gl_MaxTextureUnits'
  , 'gl_MaxVaryingFloats'
  , 'gl_MaxVertexAttribs'
  , 'gl_MaxVertexTextureImageUnits'
  , 'gl_MaxVertexUniformComponents'
  , 'gl_ModelViewMatrix'
  , 'gl_ModelViewMatrixInverse'
  , 'gl_ModelViewMatrixInverseTranspose'
  , 'gl_ModelViewMatrixTranspose'
  , 'gl_ModelViewProjectionMatrix'
  , 'gl_ModelViewProjectionMatrixInverse'
  , 'gl_ModelViewProjectionMatrixInverseTranspose'
  , 'gl_ModelViewProjectionMatrixTranspose'
  , 'gl_MultiTexCoord0'
  , 'gl_MultiTexCoord1'
  , 'gl_MultiTexCoord2'
  , 'gl_MultiTexCoord3'
  , 'gl_MultiTexCoord4'
  , 'gl_MultiTexCoord5'
  , 'gl_MultiTexCoord6'
  , 'gl_MultiTexCoord7'
  , 'gl_Normal'
  , 'gl_NormalMatrix'
  , 'gl_NormalScale'
  , 'gl_ObjectPlaneQ'
  , 'gl_ObjectPlaneR'
  , 'gl_ObjectPlaneS'
  , 'gl_ObjectPlaneT'
  , 'gl_Point'
  , 'gl_PointCoord'
  , 'gl_PointParameters'
  , 'gl_PointSize'
  , 'gl_Position'
  , 'gl_ProjectionMatrix'
  , 'gl_ProjectionMatrixInverse'
  , 'gl_ProjectionMatrixInverseTranspose'
  , 'gl_ProjectionMatrixTranspose'
  , 'gl_SecondaryColor'
  , 'gl_TexCoord'
  , 'gl_TextureEnvColor'
  , 'gl_TextureMatrix'
  , 'gl_TextureMatrixInverse'
  , 'gl_TextureMatrixInverseTranspose'
  , 'gl_TextureMatrixTranspose'
  , 'gl_Vertex'
  , 'greaterThan'
  , 'greaterThanEqual'
  , 'inversesqrt'
  , 'length'
  , 'lessThan'
  , 'lessThanEqual'
  , 'log'
  , 'log2'
  , 'matrixCompMult'
  , 'max'
  , 'min'
  , 'mix'
  , 'mod'
  , 'normalize'
  , 'not'
  , 'notEqual'
  , 'pow'
  , 'radians'
  , 'reflect'
  , 'refract'
  , 'sign'
  , 'sin'
  , 'smoothstep'
  , 'sqrt'
  , 'step'
  , 'tan'
  , 'texture2D'
  , 'texture2DLod'
  , 'texture2DProj'
  , 'texture2DProjLod'
  , 'textureCube'
  , 'textureCubeLod'
  , 'texture2DLodEXT'
  , 'texture2DProjLodEXT'
  , 'textureCubeLodEXT'
  , 'texture2DGradEXT'
  , 'texture2DProjGradEXT'
  , 'textureCubeGradEXT'
]

},{}],255:[function(require,module,exports){
var v100 = require('./literals')

module.exports = v100.slice().concat([
   'layout'
  , 'centroid'
  , 'smooth'
  , 'case'
  , 'mat2x2'
  , 'mat2x3'
  , 'mat2x4'
  , 'mat3x2'
  , 'mat3x3'
  , 'mat3x4'
  , 'mat4x2'
  , 'mat4x3'
  , 'mat4x4'
  , 'uint'
  , 'uvec2'
  , 'uvec3'
  , 'uvec4'
  , 'samplerCubeShadow'
  , 'sampler2DArray'
  , 'sampler2DArrayShadow'
  , 'isampler2D'
  , 'isampler3D'
  , 'isamplerCube'
  , 'isampler2DArray'
  , 'usampler2D'
  , 'usampler3D'
  , 'usamplerCube'
  , 'usampler2DArray'
  , 'coherent'
  , 'restrict'
  , 'readonly'
  , 'writeonly'
  , 'resource'
  , 'atomic_uint'
  , 'noperspective'
  , 'patch'
  , 'sample'
  , 'subroutine'
  , 'common'
  , 'partition'
  , 'active'
  , 'filter'
  , 'image1D'
  , 'image2D'
  , 'image3D'
  , 'imageCube'
  , 'iimage1D'
  , 'iimage2D'
  , 'iimage3D'
  , 'iimageCube'
  , 'uimage1D'
  , 'uimage2D'
  , 'uimage3D'
  , 'uimageCube'
  , 'image1DArray'
  , 'image2DArray'
  , 'iimage1DArray'
  , 'iimage2DArray'
  , 'uimage1DArray'
  , 'uimage2DArray'
  , 'image1DShadow'
  , 'image2DShadow'
  , 'image1DArrayShadow'
  , 'image2DArrayShadow'
  , 'imageBuffer'
  , 'iimageBuffer'
  , 'uimageBuffer'
  , 'sampler1DArray'
  , 'sampler1DArrayShadow'
  , 'isampler1D'
  , 'isampler1DArray'
  , 'usampler1D'
  , 'usampler1DArray'
  , 'isampler2DRect'
  , 'usampler2DRect'
  , 'samplerBuffer'
  , 'isamplerBuffer'
  , 'usamplerBuffer'
  , 'sampler2DMS'
  , 'isampler2DMS'
  , 'usampler2DMS'
  , 'sampler2DMSArray'
  , 'isampler2DMSArray'
  , 'usampler2DMSArray'
])

},{"./literals":256}],256:[function(require,module,exports){
module.exports = [
  // current
    'precision'
  , 'highp'
  , 'mediump'
  , 'lowp'
  , 'attribute'
  , 'const'
  , 'uniform'
  , 'varying'
  , 'break'
  , 'continue'
  , 'do'
  , 'for'
  , 'while'
  , 'if'
  , 'else'
  , 'in'
  , 'out'
  , 'inout'
  , 'float'
  , 'int'
  , 'void'
  , 'bool'
  , 'true'
  , 'false'
  , 'discard'
  , 'return'
  , 'mat2'
  , 'mat3'
  , 'mat4'
  , 'vec2'
  , 'vec3'
  , 'vec4'
  , 'ivec2'
  , 'ivec3'
  , 'ivec4'
  , 'bvec2'
  , 'bvec3'
  , 'bvec4'
  , 'sampler1D'
  , 'sampler2D'
  , 'sampler3D'
  , 'samplerCube'
  , 'sampler1DShadow'
  , 'sampler2DShadow'
  , 'struct'

  // future
  , 'asm'
  , 'class'
  , 'union'
  , 'enum'
  , 'typedef'
  , 'template'
  , 'this'
  , 'packed'
  , 'goto'
  , 'switch'
  , 'default'
  , 'inline'
  , 'noinline'
  , 'volatile'
  , 'public'
  , 'static'
  , 'extern'
  , 'external'
  , 'interface'
  , 'long'
  , 'short'
  , 'double'
  , 'half'
  , 'fixed'
  , 'unsigned'
  , 'input'
  , 'output'
  , 'hvec2'
  , 'hvec3'
  , 'hvec4'
  , 'dvec2'
  , 'dvec3'
  , 'dvec4'
  , 'fvec2'
  , 'fvec3'
  , 'fvec4'
  , 'sampler2DRect'
  , 'sampler3DRect'
  , 'sampler2DRectShadow'
  , 'sizeof'
  , 'cast'
  , 'namespace'
  , 'using'
]

},{}],257:[function(require,module,exports){
module.exports = [
    '<<='
  , '>>='
  , '++'
  , '--'
  , '<<'
  , '>>'
  , '<='
  , '>='
  , '=='
  , '!='
  , '&&'
  , '||'
  , '+='
  , '-='
  , '*='
  , '/='
  , '%='
  , '&='
  , '^^'
  , '^='
  , '|='
  , '('
  , ')'
  , '['
  , ']'
  , '.'
  , '!'
  , '~'
  , '*'
  , '/'
  , '%'
  , '+'
  , '-'
  , '<'
  , '>'
  , '&'
  , '^'
  , '|'
  , '?'
  , ':'
  , '='
  , ','
  , ';'
  , '{'
  , '}'
]

},{}],258:[function(require,module,exports){
var tokenize = require('./index')

module.exports = tokenizeString

function tokenizeString(str, opt) {
  var generator = tokenize(opt)
  var tokens = []

  tokens = tokens.concat(generator(str))
  tokens = tokens.concat(generator(null))

  return tokens
}

},{"./index":252}],259:[function(require,module,exports){
'use strict';

module.exports = GridIndex;

var NUM_PARAMS = 3;

function GridIndex(extent, n, padding) {
    var cells = this.cells = [];

    if (extent instanceof ArrayBuffer) {
        this.arrayBuffer = extent;
        var array = new Int32Array(this.arrayBuffer);
        extent = array[0];
        n = array[1];
        padding = array[2];

        this.d = n + 2 * padding;
        for (var k = 0; k < this.d * this.d; k++) {
            var start = array[NUM_PARAMS + k];
            var end = array[NUM_PARAMS + k + 1];
            cells.push(start === end ?
                    null :
                    array.subarray(start, end));
        }
        var keysOffset = array[NUM_PARAMS + cells.length];
        var bboxesOffset = array[NUM_PARAMS + cells.length + 1];
        this.keys = array.subarray(keysOffset, bboxesOffset);
        this.bboxes = array.subarray(bboxesOffset);

        this.insert = this._insertReadonly;

    } else {
        this.d = n + 2 * padding;
        for (var i = 0; i < this.d * this.d; i++) {
            cells.push([]);
        }
        this.keys = [];
        this.bboxes = [];
    }

    this.n = n;
    this.extent = extent;
    this.padding = padding;
    this.scale = n / extent;
    this.uid = 0;

    var p = (padding / n) * extent;
    this.min = -p;
    this.max = extent + p;
}


GridIndex.prototype.insert = function(key, x1, y1, x2, y2) {
    this._forEachCell(x1, y1, x2, y2, this._insertCell, this.uid++);
    this.keys.push(key);
    this.bboxes.push(x1);
    this.bboxes.push(y1);
    this.bboxes.push(x2);
    this.bboxes.push(y2);
};

GridIndex.prototype._insertReadonly = function() {
    throw 'Cannot insert into a GridIndex created from an ArrayBuffer.';
};

GridIndex.prototype._insertCell = function(x1, y1, x2, y2, cellIndex, uid) {
    this.cells[cellIndex].push(uid);
};

GridIndex.prototype.query = function(x1, y1, x2, y2) {
    var min = this.min;
    var max = this.max;
    if (x1 <= min && y1 <= min && max <= x2 && max <= y2) {
        // We use `Array#slice` because `this.keys` may be a `Int32Array` and
        // some browsers (Safari and IE) do not support `TypedArray#slice`
        // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/slice#Browser_compatibility
        return Array.prototype.slice.call(this.keys);

    } else {
        var result = [];
        var seenUids = {};
        this._forEachCell(x1, y1, x2, y2, this._queryCell, result, seenUids);
        return result;
    }
};

GridIndex.prototype._queryCell = function(x1, y1, x2, y2, cellIndex, result, seenUids) {
    var cell = this.cells[cellIndex];
    if (cell !== null) {
        var keys = this.keys;
        var bboxes = this.bboxes;
        for (var u = 0; u < cell.length; u++) {
            var uid = cell[u];
            if (seenUids[uid] === undefined) {
                var offset = uid * 4;
                if ((x1 <= bboxes[offset + 2]) &&
                    (y1 <= bboxes[offset + 3]) &&
                    (x2 >= bboxes[offset + 0]) &&
                    (y2 >= bboxes[offset + 1])) {
                    seenUids[uid] = true;
                    result.push(keys[uid]);
                } else {
                    seenUids[uid] = false;
                }
            }
        }
    }
};

GridIndex.prototype._forEachCell = function(x1, y1, x2, y2, fn, arg1, arg2) {
    var cx1 = this._convertToCellCoord(x1);
    var cy1 = this._convertToCellCoord(y1);
    var cx2 = this._convertToCellCoord(x2);
    var cy2 = this._convertToCellCoord(y2);
    for (var x = cx1; x <= cx2; x++) {
        for (var y = cy1; y <= cy2; y++) {
            var cellIndex = this.d * y + x;
            if (fn.call(this, x1, y1, x2, y2, cellIndex, arg1, arg2)) return;
        }
    }
};

GridIndex.prototype._convertToCellCoord = function(x) {
    return Math.max(0, Math.min(this.d - 1, Math.floor(x * this.scale) + this.padding));
};

GridIndex.prototype.toArrayBuffer = function() {
    if (this.arrayBuffer) return this.arrayBuffer;

    var cells = this.cells;

    var metadataLength = NUM_PARAMS + this.cells.length + 1 + 1;
    var totalCellLength = 0;
    for (var i = 0; i < this.cells.length; i++) {
        totalCellLength += this.cells[i].length;
    }

    var array = new Int32Array(metadataLength + totalCellLength + this.keys.length + this.bboxes.length);
    array[0] = this.extent;
    array[1] = this.n;
    array[2] = this.padding;

    var offset = metadataLength;
    for (var k = 0; k < cells.length; k++) {
        var cell = cells[k];
        array[NUM_PARAMS + k] = offset;
        array.set(cell, offset);
        offset += cell.length;
    }

    array[NUM_PARAMS + cells.length] = offset;
    array.set(this.keys, offset);
    offset += this.keys.length;

    array[NUM_PARAMS + cells.length + 1] = offset;
    array.set(this.bboxes, offset);
    offset += this.bboxes.length;

    return array.buffer;
};

},{}],260:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = nBytes * 8 - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],261:[function(require,module,exports){
require('es6-promise/auto');
var work = require('webworkify');

/**
 * It returns a canvas with the given width and height
 * @name getCanvas
 * @param {Number} w - width
 * @param {Number} h - height
 * @returns {Object}
 */
exports.getCanvas = function (w, h) {
    var canvas = document.createElement('canvas');
    canvas.width = w;
    canvas.height = h;

    return canvas;
};

/**
 * Given a ImageData it returns the dataURL
 * @name convertImageDataToCanvasURL
 * @param {ImageData} imageData
 * @returns {String}
 */
exports.convertImageDataToCanvasURL = function (imageData) {
    var canvas = document.createElement('canvas');
    var ctx = canvas.getContext('2d');
    canvas.width = imageData.width;
    canvas.height = imageData.height;
    ctx.putImageData(imageData, 0, 0);

    return canvas.toDataURL();
};


/**
 * Given a worker file with the transformation the work is split
 * between the configured number of workers and the transformation is applied
 * returning a Promise
 * @name apply
 * @param {Object} worker
 * @param {Number} nWorkers
 * @param {Object} canvas
 * @param {Object} context
 * @param {Number} params
 * @returns {Promise}
 */
exports.apply = function (worker, nWorkers, canvas, context, params) {
    var w;
    var finished = 0;
    var len = canvas.width * canvas.height * 4;
    var segmentLength;
    var blockSize;

    // Minimum number of workers = 1
    if (!nWorkers) {
        nWorkers = 1;
    }

    segmentLength = len / nWorkers; // This is the length of array sent to the worker
    blockSize = canvas.height / nWorkers; // Height of the picture chunck for every worker

    return new Promise(function (resolve) {
        for (var index = 0; index < nWorkers; index++) {
            w = work(worker);

            w.addEventListener('message', function (e) {
                // Data is retrieved using a memory clone operation
                var resultCanvasData = e.data.result;
                var index = e.data.index;

                // Copying back canvas data to canvas
                // If the first webworker  (index 0) returns data, apply it at pixel (0, 0) onwards
                // If the second webworker  (index 1) returns data, apply it at pixel (0, canvas.height/4) onwards, and so on
                context.putImageData(resultCanvasData, 0, blockSize * index);

                finished++;

                if (finished === nWorkers) {
                    resolve(context.getImageData(0, 0, canvas.width, canvas.height));
                }
            });

            // Getting the picture
            var canvasData = context.getImageData(0, blockSize * index, canvas.width, blockSize);

            // Sending canvas data to the worker using a copy memory operation
            w.postMessage({
                data: canvasData,
                index: index,
                length: segmentLength,
                params: params
            });
        }
    });
};

},{"es6-promise/auto":93,"webworkify":1016}],262:[function(require,module,exports){
var imageFilterCore = require('image-filter-core');
var worker = require('./worker');

/**
 * @name threshold
 * @param {Object} options
 * @param {ImageData} [options.data] - data of a image extracted from a canvas
 * @param {String} [options.contrast] - contrast value to apply
 * @param {String} [options.nWorkers] - number of workers
 * @returns {Promise}
 */
module.exports =  function threshold(options) {
    if (!options.data || !options.threshold) {
        throw new Error('image-filter-threshold:: invalid options provided');
    }

    var params = {
        threshold: options.threshold
    };
    var canvas = imageFilterCore.getCanvas(options.data.width, options.data.height);
    var context = canvas.getContext('2d');

    // Drawing the source image into the target canvas
    context.putImageData(options.data, 0, 0);

    return imageFilterCore.apply(
        worker,
        options.nWorkers,
        canvas,
        context,
        params
    );
};

},{"./worker":264,"image-filter-core":261}],263:[function(require,module,exports){
/**
 * Iterate over the array applying the threshold transformation
 * @name transform
 * @param {object} data
 * @param {number} length
 * @param {number} threshold
 */
module.exports = function transform (data, length, threshold) {
    for (var i = 0; i < length; i += 4) {
        var r = data[i];
        var g = data[i + 1];
        var b = data[i + 2];
        var v = (0.2126 * r + 0.7152 * g + 0.0722 * b >= threshold) ? 255 : 0;
        data[i] = data[i + 1] = data[i + 2] = v;
    }
};

},{}],264:[function(require,module,exports){
var transform = require('./threshold');

module.exports = function (self) {
    self.addEventListener('message', function (e) {
        var threshold = e.data.params.threshold;

        var canvasData = e.data.data;
        var binaryData = canvasData.data;

        var length = e.data.length;
        var index = e.data.index;

        transform(binaryData, length, threshold);

        self.postMessage({
            result: canvasData,
            index: index
        });

        self.close();
    });
};

},{"./threshold":263}],265:[function(require,module,exports){
"use strict"

//High level idea:
// 1. Use Clarkson's incremental construction to find convex hull
// 2. Point location in triangulation by jump and walk

module.exports = incrementalConvexHull

var orient = require("robust-orientation")
var compareCell = require("simplicial-complex").compareCells

function compareInt(a, b) {
  return a - b
}

function Simplex(vertices, adjacent, boundary) {
  this.vertices = vertices
  this.adjacent = adjacent
  this.boundary = boundary
  this.lastVisited = -1
}

Simplex.prototype.flip = function() {
  var t = this.vertices[0]
  this.vertices[0] = this.vertices[1]
  this.vertices[1] = t
  var u = this.adjacent[0]
  this.adjacent[0] = this.adjacent[1]
  this.adjacent[1] = u
}

function GlueFacet(vertices, cell, index) {
  this.vertices = vertices
  this.cell = cell
  this.index = index
}

function compareGlue(a, b) {
  return compareCell(a.vertices, b.vertices)
}

function bakeOrient(d) {
  var code = ["function orient(){var tuple=this.tuple;return test("]
  for(var i=0; i<=d; ++i) {
    if(i > 0) {
      code.push(",")
    }
    code.push("tuple[", i, "]")
  }
  code.push(")}return orient")
  var proc = new Function("test", code.join(""))
  var test = orient[d+1]
  if(!test) {
    test = orient
  }
  return proc(test)
}

var BAKED = []

function Triangulation(dimension, vertices, simplices) {
  this.dimension = dimension
  this.vertices = vertices
  this.simplices = simplices
  this.interior = simplices.filter(function(c) {
    return !c.boundary
  })

  this.tuple = new Array(dimension+1)
  for(var i=0; i<=dimension; ++i) {
    this.tuple[i] = this.vertices[i]
  }

  var o = BAKED[dimension]
  if(!o) {
    o = BAKED[dimension] = bakeOrient(dimension)
  }
  this.orient = o
}

var proto = Triangulation.prototype

//Degenerate situation where we are on boundary, but coplanar to face
proto.handleBoundaryDegeneracy = function(cell, point) {
  var d = this.dimension
  var n = this.vertices.length - 1
  var tuple = this.tuple
  var verts = this.vertices

  //Dumb solution: Just do dfs from boundary cell until we find any peak, or terminate
  var toVisit = [ cell ]
  cell.lastVisited = -n
  while(toVisit.length > 0) {
    cell = toVisit.pop()
    var cellVerts = cell.vertices
    var cellAdj = cell.adjacent
    for(var i=0; i<=d; ++i) {
      var neighbor = cellAdj[i]
      if(!neighbor.boundary || neighbor.lastVisited <= -n) {
        continue
      }
      var nv = neighbor.vertices
      for(var j=0; j<=d; ++j) {
        var vv = nv[j]
        if(vv < 0) {
          tuple[j] = point
        } else {
          tuple[j] = verts[vv]
        }
      }
      var o = this.orient()
      if(o > 0) {
        return neighbor
      }
      neighbor.lastVisited = -n
      if(o === 0) {
        toVisit.push(neighbor)
      }
    }
  }
  return null
}

proto.walk = function(point, random) {
  //Alias local properties
  var n = this.vertices.length - 1
  var d = this.dimension
  var verts = this.vertices
  var tuple = this.tuple

  //Compute initial jump cell
  var initIndex = random ? (this.interior.length * Math.random())|0 : (this.interior.length-1)
  var cell = this.interior[ initIndex ]

  //Start walking
outerLoop:
  while(!cell.boundary) {
    var cellVerts = cell.vertices
    var cellAdj = cell.adjacent

    for(var i=0; i<=d; ++i) {
      tuple[i] = verts[cellVerts[i]]
    }
    cell.lastVisited = n

    //Find farthest adjacent cell
    for(var i=0; i<=d; ++i) {
      var neighbor = cellAdj[i]
      if(neighbor.lastVisited >= n) {
        continue
      }
      var prev = tuple[i]
      tuple[i] = point
      var o = this.orient()
      tuple[i] = prev
      if(o < 0) {
        cell = neighbor
        continue outerLoop
      } else {
        if(!neighbor.boundary) {
          neighbor.lastVisited = n
        } else {
          neighbor.lastVisited = -n
        }
      }
    }
    return
  }

  return cell
}

proto.addPeaks = function(point, cell) {
  var n = this.vertices.length - 1
  var d = this.dimension
  var verts = this.vertices
  var tuple = this.tuple
  var interior = this.interior
  var simplices = this.simplices

  //Walking finished at boundary, time to add peaks
  var tovisit = [ cell ]

  //Stretch initial boundary cell into a peak
  cell.lastVisited = n
  cell.vertices[cell.vertices.indexOf(-1)] = n
  cell.boundary = false
  interior.push(cell)

  //Record a list of all new boundaries created by added peaks so we can glue them together when we are all done
  var glueFacets = []

  //Do a traversal of the boundary walking outward from starting peak
  while(tovisit.length > 0) {
    //Pop off peak and walk over adjacent cells
    var cell = tovisit.pop()
    var cellVerts = cell.vertices
    var cellAdj = cell.adjacent
    var indexOfN = cellVerts.indexOf(n)
    if(indexOfN < 0) {
      continue
    }

    for(var i=0; i<=d; ++i) {
      if(i === indexOfN) {
        continue
      }

      //For each boundary neighbor of the cell
      var neighbor = cellAdj[i]
      if(!neighbor.boundary || neighbor.lastVisited >= n) {
        continue
      }

      var nv = neighbor.vertices

      //Test if neighbor is a peak
      if(neighbor.lastVisited !== -n) {      
        //Compute orientation of p relative to each boundary peak
        var indexOfNeg1 = 0
        for(var j=0; j<=d; ++j) {
          if(nv[j] < 0) {
            indexOfNeg1 = j
            tuple[j] = point
          } else {
            tuple[j] = verts[nv[j]]
          }
        }
        var o = this.orient()

        //Test if neighbor cell is also a peak
        if(o > 0) {
          nv[indexOfNeg1] = n
          neighbor.boundary = false
          interior.push(neighbor)
          tovisit.push(neighbor)
          neighbor.lastVisited = n
          continue
        } else {
          neighbor.lastVisited = -n
        }
      }

      var na = neighbor.adjacent

      //Otherwise, replace neighbor with new face
      var vverts = cellVerts.slice()
      var vadj = cellAdj.slice()
      var ncell = new Simplex(vverts, vadj, true)
      simplices.push(ncell)

      //Connect to neighbor
      var opposite = na.indexOf(cell)
      if(opposite < 0) {
        continue
      }
      na[opposite] = ncell
      vadj[indexOfN] = neighbor

      //Connect to cell
      vverts[i] = -1
      vadj[i] = cell
      cellAdj[i] = ncell

      //Flip facet
      ncell.flip()

      //Add to glue list
      for(var j=0; j<=d; ++j) {
        var uu = vverts[j]
        if(uu < 0 || uu === n) {
          continue
        }
        var nface = new Array(d-1)
        var nptr = 0
        for(var k=0; k<=d; ++k) {
          var vv = vverts[k]
          if(vv < 0 || k === j) {
            continue
          }
          nface[nptr++] = vv
        }
        glueFacets.push(new GlueFacet(nface, ncell, j))
      }
    }
  }

  //Glue boundary facets together
  glueFacets.sort(compareGlue)

  for(var i=0; i+1<glueFacets.length; i+=2) {
    var a = glueFacets[i]
    var b = glueFacets[i+1]
    var ai = a.index
    var bi = b.index
    if(ai < 0 || bi < 0) {
      continue
    }
    a.cell.adjacent[a.index] = b.cell
    b.cell.adjacent[b.index] = a.cell
  }
}

proto.insert = function(point, random) {
  //Add point
  var verts = this.vertices
  verts.push(point)

  var cell = this.walk(point, random)
  if(!cell) {
    return
  }

  //Alias local properties
  var d = this.dimension
  var tuple = this.tuple

  //Degenerate case: If point is coplanar to cell, then walk until we find a non-degenerate boundary
  for(var i=0; i<=d; ++i) {
    var vv = cell.vertices[i]
    if(vv < 0) {
      tuple[i] = point
    } else {
      tuple[i] = verts[vv]
    }
  }
  var o = this.orient(tuple)
  if(o < 0) {
    return
  } else if(o === 0) {
    cell = this.handleBoundaryDegeneracy(cell, point)
    if(!cell) {
      return
    }
  }

  //Add peaks
  this.addPeaks(point, cell)
}

//Extract all boundary cells
proto.boundary = function() {
  var d = this.dimension
  var boundary = []
  var cells = this.simplices
  var nc = cells.length
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    if(c.boundary) {
      var bcell = new Array(d)
      var cv = c.vertices
      var ptr = 0
      var parity = 0
      for(var j=0; j<=d; ++j) {
        if(cv[j] >= 0) {
          bcell[ptr++] = cv[j]
        } else {
          parity = j&1
        }
      }
      if(parity === (d&1)) {
        var t = bcell[0]
        bcell[0] = bcell[1]
        bcell[1] = t
      }
      boundary.push(bcell)
    }
  }
  return boundary
}

function incrementalConvexHull(points, randomSearch) {
  var n = points.length
  if(n === 0) {
    throw new Error("Must have at least d+1 points")
  }
  var d = points[0].length
  if(n <= d) {
    throw new Error("Must input at least d+1 points")
  }

  //FIXME: This could be degenerate, but need to select d+1 non-coplanar points to bootstrap process
  var initialSimplex = points.slice(0, d+1)

  //Make sure initial simplex is positively oriented
  var o = orient.apply(void 0, initialSimplex)
  if(o === 0) {
    throw new Error("Input not in general position")
  }
  var initialCoords = new Array(d+1)
  for(var i=0; i<=d; ++i) {
    initialCoords[i] = i
  }
  if(o < 0) {
    initialCoords[0] = 1
    initialCoords[1] = 0
  }

  //Create initial topological index, glue pointers together (kind of messy)
  var initialCell = new Simplex(initialCoords, new Array(d+1), false)
  var boundary = initialCell.adjacent
  var list = new Array(d+2)
  for(var i=0; i<=d; ++i) {
    var verts = initialCoords.slice()
    for(var j=0; j<=d; ++j) {
      if(j === i) {
        verts[j] = -1
      }
    }
    var t = verts[0]
    verts[0] = verts[1]
    verts[1] = t
    var cell = new Simplex(verts, new Array(d+1), true)
    boundary[i] = cell
    list[i] = cell
  }
  list[d+1] = initialCell
  for(var i=0; i<=d; ++i) {
    var verts = boundary[i].vertices
    var adj = boundary[i].adjacent
    for(var j=0; j<=d; ++j) {
      var v = verts[j]
      if(v < 0) {
        adj[j] = initialCell
        continue
      }
      for(var k=0; k<=d; ++k) {
        if(boundary[k].vertices.indexOf(v) < 0) {
          adj[j] = boundary[k]
        }
      }
    }
  }

  //Initialize triangles
  var triangles = new Triangulation(d, initialSimplex, list)

  //Insert remaining points
  var useRandom = !!randomSearch
  for(var i=d+1; i<n; ++i) {
    triangles.insert(points[i], useRandom)
  }
  
  //Extract boundary cells
  return triangles.boundary()
}
},{"robust-orientation":954,"simplicial-complex":969}],266:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],267:[function(require,module,exports){
"use strict"

var bounds = require("binary-search-bounds")

var NOT_FOUND = 0
var SUCCESS = 1
var EMPTY = 2

module.exports = createWrapper

function IntervalTreeNode(mid, left, right, leftPoints, rightPoints) {
  this.mid = mid
  this.left = left
  this.right = right
  this.leftPoints = leftPoints
  this.rightPoints = rightPoints
  this.count = (left ? left.count : 0) + (right ? right.count : 0) + leftPoints.length
}

var proto = IntervalTreeNode.prototype

function copy(a, b) {
  a.mid = b.mid
  a.left = b.left
  a.right = b.right
  a.leftPoints = b.leftPoints
  a.rightPoints = b.rightPoints
  a.count = b.count
}

function rebuild(node, intervals) {
  var ntree = createIntervalTree(intervals)
  node.mid = ntree.mid
  node.left = ntree.left
  node.right = ntree.right
  node.leftPoints = ntree.leftPoints
  node.rightPoints = ntree.rightPoints
  node.count = ntree.count
}

function rebuildWithInterval(node, interval) {
  var intervals = node.intervals([])
  intervals.push(interval)
  rebuild(node, intervals)    
}

function rebuildWithoutInterval(node, interval) {
  var intervals = node.intervals([])
  var idx = intervals.indexOf(interval)
  if(idx < 0) {
    return NOT_FOUND
  }
  intervals.splice(idx, 1)
  rebuild(node, intervals)
  return SUCCESS
}

proto.intervals = function(result) {
  result.push.apply(result, this.leftPoints)
  if(this.left) {
    this.left.intervals(result)
  }
  if(this.right) {
    this.right.intervals(result)
  }
  return result
}

proto.insert = function(interval) {
  var weight = this.count - this.leftPoints.length
  this.count += 1
  if(interval[1] < this.mid) {
    if(this.left) {
      if(4*(this.left.count+1) > 3*(weight+1)) {
        rebuildWithInterval(this, interval)
      } else {
        this.left.insert(interval)
      }
    } else {
      this.left = createIntervalTree([interval])
    }
  } else if(interval[0] > this.mid) {
    if(this.right) {
      if(4*(this.right.count+1) > 3*(weight+1)) {
        rebuildWithInterval(this, interval)
      } else {
        this.right.insert(interval)
      }
    } else {
      this.right = createIntervalTree([interval])
    }
  } else {
    var l = bounds.ge(this.leftPoints, interval, compareBegin)
    var r = bounds.ge(this.rightPoints, interval, compareEnd)
    this.leftPoints.splice(l, 0, interval)
    this.rightPoints.splice(r, 0, interval)
  }
}

proto.remove = function(interval) {
  var weight = this.count - this.leftPoints
  if(interval[1] < this.mid) {
    if(!this.left) {
      return NOT_FOUND
    }
    var rw = this.right ? this.right.count : 0
    if(4 * rw > 3 * (weight-1)) {
      return rebuildWithoutInterval(this, interval)
    }
    var r = this.left.remove(interval)
    if(r === EMPTY) {
      this.left = null
      this.count -= 1
      return SUCCESS
    } else if(r === SUCCESS) {
      this.count -= 1
    }
    return r
  } else if(interval[0] > this.mid) {
    if(!this.right) {
      return NOT_FOUND
    }
    var lw = this.left ? this.left.count : 0
    if(4 * lw > 3 * (weight-1)) {
      return rebuildWithoutInterval(this, interval)
    }
    var r = this.right.remove(interval)
    if(r === EMPTY) {
      this.right = null
      this.count -= 1
      return SUCCESS
    } else if(r === SUCCESS) {
      this.count -= 1
    }
    return r
  } else {
    if(this.count === 1) {
      if(this.leftPoints[0] === interval) {
        return EMPTY
      } else {
        return NOT_FOUND
      }
    }
    if(this.leftPoints.length === 1 && this.leftPoints[0] === interval) {
      if(this.left && this.right) {
        var p = this
        var n = this.left
        while(n.right) {
          p = n
          n = n.right
        }
        if(p === this) {
          n.right = this.right
        } else {
          var l = this.left
          var r = this.right
          p.count -= n.count
          p.right = n.left
          n.left = l
          n.right = r
        }
        copy(this, n)
        this.count = (this.left?this.left.count:0) + (this.right?this.right.count:0) + this.leftPoints.length
      } else if(this.left) {
        copy(this, this.left)
      } else {
        copy(this, this.right)
      }
      return SUCCESS
    }
    for(var l = bounds.ge(this.leftPoints, interval, compareBegin); l<this.leftPoints.length; ++l) {
      if(this.leftPoints[l][0] !== interval[0]) {
        break
      }
      if(this.leftPoints[l] === interval) {
        this.count -= 1
        this.leftPoints.splice(l, 1)
        for(var r = bounds.ge(this.rightPoints, interval, compareEnd); r<this.rightPoints.length; ++r) {
          if(this.rightPoints[r][1] !== interval[1]) {
            break
          } else if(this.rightPoints[r] === interval) {
            this.rightPoints.splice(r, 1)
            return SUCCESS
          }
        }
      }
    }
    return NOT_FOUND
  }
}

function reportLeftRange(arr, hi, cb) {
  for(var i=0; i<arr.length && arr[i][0] <= hi; ++i) {
    var r = cb(arr[i])
    if(r) { return r }
  }
}

function reportRightRange(arr, lo, cb) {
  for(var i=arr.length-1; i>=0 && arr[i][1] >= lo; --i) {
    var r = cb(arr[i])
    if(r) { return r }
  }
}

function reportRange(arr, cb) {
  for(var i=0; i<arr.length; ++i) {
    var r = cb(arr[i])
    if(r) { return r }
  }
}

proto.queryPoint = function(x, cb) {
  if(x < this.mid) {
    if(this.left) {
      var r = this.left.queryPoint(x, cb)
      if(r) { return r }
    }
    return reportLeftRange(this.leftPoints, x, cb)
  } else if(x > this.mid) {
    if(this.right) {
      var r = this.right.queryPoint(x, cb)
      if(r) { return r }
    }
    return reportRightRange(this.rightPoints, x, cb)
  } else {
    return reportRange(this.leftPoints, cb)
  }
}

proto.queryInterval = function(lo, hi, cb) {
  if(lo < this.mid && this.left) {
    var r = this.left.queryInterval(lo, hi, cb)
    if(r) { return r }
  }
  if(hi > this.mid && this.right) {
    var r = this.right.queryInterval(lo, hi, cb)
    if(r) { return r }
  }
  if(hi < this.mid) {
    return reportLeftRange(this.leftPoints, hi, cb)
  } else if(lo > this.mid) {
    return reportRightRange(this.rightPoints, lo, cb)
  } else {
    return reportRange(this.leftPoints, cb)
  }
}

function compareNumbers(a, b) {
  return a - b
}

function compareBegin(a, b) {
  var d = a[0] - b[0]
  if(d) { return d }
  return a[1] - b[1]
}

function compareEnd(a, b) {
  var d = a[1] - b[1]
  if(d) { return d }
  return a[0] - b[0]
}

function createIntervalTree(intervals) {
  if(intervals.length === 0) {
    return null
  }
  var pts = []
  for(var i=0; i<intervals.length; ++i) {
    pts.push(intervals[i][0], intervals[i][1])
  }
  pts.sort(compareNumbers)

  var mid = pts[pts.length>>1]

  var leftIntervals = []
  var rightIntervals = []
  var centerIntervals = []
  for(var i=0; i<intervals.length; ++i) {
    var s = intervals[i]
    if(s[1] < mid) {
      leftIntervals.push(s)
    } else if(mid < s[0]) {
      rightIntervals.push(s)
    } else {
      centerIntervals.push(s)
    }
  }

  //Split center intervals
  var leftPoints = centerIntervals
  var rightPoints = centerIntervals.slice()
  leftPoints.sort(compareBegin)
  rightPoints.sort(compareEnd)

  return new IntervalTreeNode(mid, 
    createIntervalTree(leftIntervals),
    createIntervalTree(rightIntervals),
    leftPoints,
    rightPoints)
}

//User friendly wrapper that makes it possible to support empty trees
function IntervalTree(root) {
  this.root = root
}

var tproto = IntervalTree.prototype

tproto.insert = function(interval) {
  if(this.root) {
    this.root.insert(interval)
  } else {
    this.root = new IntervalTreeNode(interval[0], null, null, [interval], [interval])
  }
}

tproto.remove = function(interval) {
  if(this.root) {
    var r = this.root.remove(interval)
    if(r === EMPTY) {
      this.root = null
    }
    return r !== NOT_FOUND
  }
  return false
}

tproto.queryPoint = function(p, cb) {
  if(this.root) {
    return this.root.queryPoint(p, cb)
  }
}

tproto.queryInterval = function(lo, hi, cb) {
  if(lo <= hi && this.root) {
    return this.root.queryInterval(lo, hi, cb)
  }
}

Object.defineProperty(tproto, "count", {
  get: function() {
    if(this.root) {
      return this.root.count
    }
    return 0
  }
})

Object.defineProperty(tproto, "intervals", {
  get: function() {
    if(this.root) {
      return this.root.intervals([])
    }
    return []
  }
})

function createWrapper(intervals) {
  if(!intervals || intervals.length === 0) {
    return new IntervalTree(null)
  }
  return new IntervalTree(createIntervalTree(intervals))
}

},{"binary-search-bounds":32}],268:[function(require,module,exports){
"use strict"

function invertPermutation(pi, result) {
  result = result || new Array(pi.length)
  for(var i=0; i<pi.length; ++i) {
    result[pi[i]] = i
  }
  return result
}

module.exports = invertPermutation
},{}],269:[function(require,module,exports){
"use strict"

function iota(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = i
  }
  return result
}

module.exports = iota
},{}],270:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],271:[function(require,module,exports){
module.exports = isMobile;

function isMobile (ua) {
  if (!ua && typeof navigator != 'undefined') ua = navigator.userAgent;
  if (ua && ua.headers && typeof ua.headers['user-agent'] == 'string') {
    ua = ua.headers['user-agent'];
  }
  if (typeof ua != 'string') return false;

  return /(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(ua) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(ua.substr(0,4));
}


},{}],272:[function(require,module,exports){
arguments[4][47][0].apply(exports,arguments)
},{"dup":47}],273:[function(require,module,exports){
/*!
 * jQuery JavaScript Library v2.2.4
 * http://jquery.com/
 *
 * Includes Sizzle.js
 * http://sizzlejs.com/
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2016-05-20T17:23Z
 */

(function( global, factory ) {

	if ( typeof module === "object" && typeof module.exports === "object" ) {
		// For CommonJS and CommonJS-like environments where a proper `window`
		// is present, execute the factory and get jQuery.
		// For environments that do not have a `window` with a `document`
		// (such as Node.js), expose a factory as module.exports.
		// This accentuates the need for the creation of a real `window`.
		// e.g. var jQuery = require("jquery")(window);
		// See ticket #14549 for more info.
		module.exports = global.document ?
			factory( global, true ) :
			function( w ) {
				if ( !w.document ) {
					throw new Error( "jQuery requires a window with a document" );
				}
				return factory( w );
			};
	} else {
		factory( global );
	}

// Pass this if window is not defined yet
}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) {

// Support: Firefox 18+
// Can't be in strict mode, several libs including ASP.NET trace
// the stack via arguments.caller.callee and Firefox dies if
// you try to trace through "use strict" call chains. (#13335)
//"use strict";
var arr = [];

var document = window.document;

var slice = arr.slice;

var concat = arr.concat;

var push = arr.push;

var indexOf = arr.indexOf;

var class2type = {};

var toString = class2type.toString;

var hasOwn = class2type.hasOwnProperty;

var support = {};



var
	version = "2.2.4",

	// Define a local copy of jQuery
	jQuery = function( selector, context ) {

		// The jQuery object is actually just the init constructor 'enhanced'
		// Need init if jQuery is called (just allow error to be thrown if not included)
		return new jQuery.fn.init( selector, context );
	},

	// Support: Android<4.1
	// Make sure we trim BOM and NBSP
	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,

	// Matches dashed string for camelizing
	rmsPrefix = /^-ms-/,
	rdashAlpha = /-([\da-z])/gi,

	// Used by jQuery.camelCase as callback to replace()
	fcamelCase = function( all, letter ) {
		return letter.toUpperCase();
	};

jQuery.fn = jQuery.prototype = {

	// The current version of jQuery being used
	jquery: version,

	constructor: jQuery,

	// Start with an empty selector
	selector: "",

	// The default length of a jQuery object is 0
	length: 0,

	toArray: function() {
		return slice.call( this );
	},

	// Get the Nth element in the matched element set OR
	// Get the whole matched element set as a clean array
	get: function( num ) {
		return num != null ?

			// Return just the one element from the set
			( num < 0 ? this[ num + this.length ] : this[ num ] ) :

			// Return all the elements in a clean array
			slice.call( this );
	},

	// Take an array of elements and push it onto the stack
	// (returning the new matched element set)
	pushStack: function( elems ) {

		// Build a new jQuery matched element set
		var ret = jQuery.merge( this.constructor(), elems );

		// Add the old object onto the stack (as a reference)
		ret.prevObject = this;
		ret.context = this.context;

		// Return the newly-formed element set
		return ret;
	},

	// Execute a callback for every element in the matched set.
	each: function( callback ) {
		return jQuery.each( this, callback );
	},

	map: function( callback ) {
		return this.pushStack( jQuery.map( this, function( elem, i ) {
			return callback.call( elem, i, elem );
		} ) );
	},

	slice: function() {
		return this.pushStack( slice.apply( this, arguments ) );
	},

	first: function() {
		return this.eq( 0 );
	},

	last: function() {
		return this.eq( -1 );
	},

	eq: function( i ) {
		var len = this.length,
			j = +i + ( i < 0 ? len : 0 );
		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
	},

	end: function() {
		return this.prevObject || this.constructor();
	},

	// For internal use only.
	// Behaves like an Array's method, not like a jQuery method.
	push: push,
	sort: arr.sort,
	splice: arr.splice
};

jQuery.extend = jQuery.fn.extend = function() {
	var options, name, src, copy, copyIsArray, clone,
		target = arguments[ 0 ] || {},
		i = 1,
		length = arguments.length,
		deep = false;

	// Handle a deep copy situation
	if ( typeof target === "boolean" ) {
		deep = target;

		// Skip the boolean and the target
		target = arguments[ i ] || {};
		i++;
	}

	// Handle case when target is a string or something (possible in deep copy)
	if ( typeof target !== "object" && !jQuery.isFunction( target ) ) {
		target = {};
	}

	// Extend jQuery itself if only one argument is passed
	if ( i === length ) {
		target = this;
		i--;
	}

	for ( ; i < length; i++ ) {

		// Only deal with non-null/undefined values
		if ( ( options = arguments[ i ] ) != null ) {

			// Extend the base object
			for ( name in options ) {
				src = target[ name ];
				copy = options[ name ];

				// Prevent never-ending loop
				if ( target === copy ) {
					continue;
				}

				// Recurse if we're merging plain objects or arrays
				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
					( copyIsArray = jQuery.isArray( copy ) ) ) ) {

					if ( copyIsArray ) {
						copyIsArray = false;
						clone = src && jQuery.isArray( src ) ? src : [];

					} else {
						clone = src && jQuery.isPlainObject( src ) ? src : {};
					}

					// Never move original objects, clone them
					target[ name ] = jQuery.extend( deep, clone, copy );

				// Don't bring in undefined values
				} else if ( copy !== undefined ) {
					target[ name ] = copy;
				}
			}
		}
	}

	// Return the modified object
	return target;
};

jQuery.extend( {

	// Unique for each copy of jQuery on the page
	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

	// Assume jQuery is ready without the ready module
	isReady: true,

	error: function( msg ) {
		throw new Error( msg );
	},

	noop: function() {},

	isFunction: function( obj ) {
		return jQuery.type( obj ) === "function";
	},

	isArray: Array.isArray,

	isWindow: function( obj ) {
		return obj != null && obj === obj.window;
	},

	isNumeric: function( obj ) {

		// parseFloat NaNs numeric-cast false positives (null|true|false|"")
		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
		// subtraction forces infinities to NaN
		// adding 1 corrects loss of precision from parseFloat (#15100)
		var realStringObj = obj && obj.toString();
		return !jQuery.isArray( obj ) && ( realStringObj - parseFloat( realStringObj ) + 1 ) >= 0;
	},

	isPlainObject: function( obj ) {
		var key;

		// Not plain objects:
		// - Any object or value whose internal [[Class]] property is not "[object Object]"
		// - DOM nodes
		// - window
		if ( jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
			return false;
		}

		// Not own constructor property must be Object
		if ( obj.constructor &&
				!hasOwn.call( obj, "constructor" ) &&
				!hasOwn.call( obj.constructor.prototype || {}, "isPrototypeOf" ) ) {
			return false;
		}

		// Own properties are enumerated firstly, so to speed up,
		// if last one is own, then all properties are own
		for ( key in obj ) {}

		return key === undefined || hasOwn.call( obj, key );
	},

	isEmptyObject: function( obj ) {
		var name;
		for ( name in obj ) {
			return false;
		}
		return true;
	},

	type: function( obj ) {
		if ( obj == null ) {
			return obj + "";
		}

		// Support: Android<4.0, iOS<6 (functionish RegExp)
		return typeof obj === "object" || typeof obj === "function" ?
			class2type[ toString.call( obj ) ] || "object" :
			typeof obj;
	},

	// Evaluates a script in a global context
	globalEval: function( code ) {
		var script,
			indirect = eval;

		code = jQuery.trim( code );

		if ( code ) {

			// If the code includes a valid, prologue position
			// strict mode pragma, execute code by injecting a
			// script tag into the document.
			if ( code.indexOf( "use strict" ) === 1 ) {
				script = document.createElement( "script" );
				script.text = code;
				document.head.appendChild( script ).parentNode.removeChild( script );
			} else {

				// Otherwise, avoid the DOM node creation, insertion
				// and removal by using an indirect global eval

				indirect( code );
			}
		}
	},

	// Convert dashed to camelCase; used by the css and data modules
	// Support: IE9-11+
	// Microsoft forgot to hump their vendor prefix (#9572)
	camelCase: function( string ) {
		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
	},

	nodeName: function( elem, name ) {
		return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
	},

	each: function( obj, callback ) {
		var length, i = 0;

		if ( isArrayLike( obj ) ) {
			length = obj.length;
			for ( ; i < length; i++ ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		} else {
			for ( i in obj ) {
				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
					break;
				}
			}
		}

		return obj;
	},

	// Support: Android<4.1
	trim: function( text ) {
		return text == null ?
			"" :
			( text + "" ).replace( rtrim, "" );
	},

	// results is for internal usage only
	makeArray: function( arr, results ) {
		var ret = results || [];

		if ( arr != null ) {
			if ( isArrayLike( Object( arr ) ) ) {
				jQuery.merge( ret,
					typeof arr === "string" ?
					[ arr ] : arr
				);
			} else {
				push.call( ret, arr );
			}
		}

		return ret;
	},

	inArray: function( elem, arr, i ) {
		return arr == null ? -1 : indexOf.call( arr, elem, i );
	},

	merge: function( first, second ) {
		var len = +second.length,
			j = 0,
			i = first.length;

		for ( ; j < len; j++ ) {
			first[ i++ ] = second[ j ];
		}

		first.length = i;

		return first;
	},

	grep: function( elems, callback, invert ) {
		var callbackInverse,
			matches = [],
			i = 0,
			length = elems.length,
			callbackExpect = !invert;

		// Go through the array, only saving the items
		// that pass the validator function
		for ( ; i < length; i++ ) {
			callbackInverse = !callback( elems[ i ], i );
			if ( callbackInverse !== callbackExpect ) {
				matches.push( elems[ i ] );
			}
		}

		return matches;
	},

	// arg is for internal usage only
	map: function( elems, callback, arg ) {
		var length, value,
			i = 0,
			ret = [];

		// Go through the array, translating each of the items to their new values
		if ( isArrayLike( elems ) ) {
			length = elems.length;
			for ( ; i < length; i++ ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}

		// Go through every key on the object,
		} else {
			for ( i in elems ) {
				value = callback( elems[ i ], i, arg );

				if ( value != null ) {
					ret.push( value );
				}
			}
		}

		// Flatten any nested arrays
		return concat.apply( [], ret );
	},

	// A global GUID counter for objects
	guid: 1,

	// Bind a function to a context, optionally partially applying any
	// arguments.
	proxy: function( fn, context ) {
		var tmp, args, proxy;

		if ( typeof context === "string" ) {
			tmp = fn[ context ];
			context = fn;
			fn = tmp;
		}

		// Quick check to determine if target is callable, in the spec
		// this throws a TypeError, but we will just return undefined.
		if ( !jQuery.isFunction( fn ) ) {
			return undefined;
		}

		// Simulated bind
		args = slice.call( arguments, 2 );
		proxy = function() {
			return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
		};

		// Set the guid of unique handler to the same of original handler, so it can be removed
		proxy.guid = fn.guid = fn.guid || jQuery.guid++;

		return proxy;
	},

	now: Date.now,

	// jQuery.support is not used in Core but other projects attach their
	// properties to it so it needs to exist.
	support: support
} );

// JSHint would error on this code due to the Symbol not being defined in ES5.
// Defining this global in .jshintrc would create a danger of using the global
// unguarded in another place, it seems safer to just disable JSHint for these
// three lines.
/* jshint ignore: start */
if ( typeof Symbol === "function" ) {
	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
}
/* jshint ignore: end */

// Populate the class2type map
jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
function( i, name ) {
	class2type[ "[object " + name + "]" ] = name.toLowerCase();
} );

function isArrayLike( obj ) {

	// Support: iOS 8.2 (not reproducible in simulator)
	// `in` check used to prevent JIT error (gh-2145)
	// hasOwn isn't used here due to false negatives
	// regarding Nodelist length in IE
	var length = !!obj && "length" in obj && obj.length,
		type = jQuery.type( obj );

	if ( type === "function" || jQuery.isWindow( obj ) ) {
		return false;
	}

	return type === "array" || length === 0 ||
		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
}
var Sizzle =
/*!
 * Sizzle CSS Selector Engine v2.2.1
 * http://sizzlejs.com/
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2015-10-17
 */
(function( window ) {

var i,
	support,
	Expr,
	getText,
	isXML,
	tokenize,
	compile,
	select,
	outermostContext,
	sortInput,
	hasDuplicate,

	// Local document vars
	setDocument,
	document,
	docElem,
	documentIsHTML,
	rbuggyQSA,
	rbuggyMatches,
	matches,
	contains,

	// Instance-specific data
	expando = "sizzle" + 1 * new Date(),
	preferredDoc = window.document,
	dirruns = 0,
	done = 0,
	classCache = createCache(),
	tokenCache = createCache(),
	compilerCache = createCache(),
	sortOrder = function( a, b ) {
		if ( a === b ) {
			hasDuplicate = true;
		}
		return 0;
	},

	// General-purpose constants
	MAX_NEGATIVE = 1 << 31,

	// Instance methods
	hasOwn = ({}).hasOwnProperty,
	arr = [],
	pop = arr.pop,
	push_native = arr.push,
	push = arr.push,
	slice = arr.slice,
	// Use a stripped-down indexOf as it's faster than native
	// http://jsperf.com/thor-indexof-vs-for/5
	indexOf = function( list, elem ) {
		var i = 0,
			len = list.length;
		for ( ; i < len; i++ ) {
			if ( list[i] === elem ) {
				return i;
			}
		}
		return -1;
	},

	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",

	// Regular expressions

	// http://www.w3.org/TR/css3-selectors/#whitespace
	whitespace = "[\\x20\\t\\r\\n\\f]",

	// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
	identifier = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+",

	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
		// Operator (capture 2)
		"*([*^$|!~]?=)" + whitespace +
		// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
		"*\\]",

	pseudos = ":(" + identifier + ")(?:\\((" +
		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
		// 1. quoted (capture 3; capture 4 or capture 5)
		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
		// 2. simple (capture 6)
		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
		// 3. anything else (capture 2)
		".*" +
		")\\)|)",

	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
	rwhitespace = new RegExp( whitespace + "+", "g" ),
	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),

	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),

	rpseudo = new RegExp( pseudos ),
	ridentifier = new RegExp( "^" + identifier + "$" ),

	matchExpr = {
		"ID": new RegExp( "^#(" + identifier + ")" ),
		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
		"ATTR": new RegExp( "^" + attributes ),
		"PSEUDO": new RegExp( "^" + pseudos ),
		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
		// For use in libraries implementing .is()
		// We use this for POS matching in `select`
		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
	},

	rinputs = /^(?:input|select|textarea|button)$/i,
	rheader = /^h\d$/i,

	rnative = /^[^{]+\{\s*\[native \w/,

	// Easily-parseable/retrievable ID or TAG or CLASS selectors
	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,

	rsibling = /[+~]/,
	rescape = /'|\\/g,

	// CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
	funescape = function( _, escaped, escapedWhitespace ) {
		var high = "0x" + escaped - 0x10000;
		// NaN means non-codepoint
		// Support: Firefox<24
		// Workaround erroneous numeric interpretation of +"0x"
		return high !== high || escapedWhitespace ?
			escaped :
			high < 0 ?
				// BMP codepoint
				String.fromCharCode( high + 0x10000 ) :
				// Supplemental Plane codepoint (surrogate pair)
				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
	},

	// Used for iframes
	// See setDocument()
	// Removing the function wrapper causes a "Permission Denied"
	// error in IE
	unloadHandler = function() {
		setDocument();
	};

// Optimize for push.apply( _, NodeList )
try {
	push.apply(
		(arr = slice.call( preferredDoc.childNodes )),
		preferredDoc.childNodes
	);
	// Support: Android<4.0
	// Detect silently failing push.apply
	arr[ preferredDoc.childNodes.length ].nodeType;
} catch ( e ) {
	push = { apply: arr.length ?

		// Leverage slice if possible
		function( target, els ) {
			push_native.apply( target, slice.call(els) );
		} :

		// Support: IE<9
		// Otherwise append directly
		function( target, els ) {
			var j = target.length,
				i = 0;
			// Can't trust NodeList.length
			while ( (target[j++] = els[i++]) ) {}
			target.length = j - 1;
		}
	};
}

function Sizzle( selector, context, results, seed ) {
	var m, i, elem, nid, nidselect, match, groups, newSelector,
		newContext = context && context.ownerDocument,

		// nodeType defaults to 9, since context defaults to document
		nodeType = context ? context.nodeType : 9;

	results = results || [];

	// Return early from calls with invalid selector or context
	if ( typeof selector !== "string" || !selector ||
		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {

		return results;
	}

	// Try to shortcut find operations (as opposed to filters) in HTML documents
	if ( !seed ) {

		if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
			setDocument( context );
		}
		context = context || document;

		if ( documentIsHTML ) {

			// If the selector is sufficiently simple, try using a "get*By*" DOM method
			// (excepting DocumentFragment context, where the methods don't exist)
			if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {

				// ID selector
				if ( (m = match[1]) ) {

					// Document context
					if ( nodeType === 9 ) {
						if ( (elem = context.getElementById( m )) ) {

							// Support: IE, Opera, Webkit
							// TODO: identify versions
							// getElementById can match elements by name instead of ID
							if ( elem.id === m ) {
								results.push( elem );
								return results;
							}
						} else {
							return results;
						}

					// Element context
					} else {

						// Support: IE, Opera, Webkit
						// TODO: identify versions
						// getElementById can match elements by name instead of ID
						if ( newContext && (elem = newContext.getElementById( m )) &&
							contains( context, elem ) &&
							elem.id === m ) {

							results.push( elem );
							return results;
						}
					}

				// Type selector
				} else if ( match[2] ) {
					push.apply( results, context.getElementsByTagName( selector ) );
					return results;

				// Class selector
				} else if ( (m = match[3]) && support.getElementsByClassName &&
					context.getElementsByClassName ) {

					push.apply( results, context.getElementsByClassName( m ) );
					return results;
				}
			}

			// Take advantage of querySelectorAll
			if ( support.qsa &&
				!compilerCache[ selector + " " ] &&
				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {

				if ( nodeType !== 1 ) {
					newContext = context;
					newSelector = selector;

				// qSA looks outside Element context, which is not what we want
				// Thanks to Andrew Dupont for this workaround technique
				// Support: IE <=8
				// Exclude object elements
				} else if ( context.nodeName.toLowerCase() !== "object" ) {

					// Capture the context ID, setting it first if necessary
					if ( (nid = context.getAttribute( "id" )) ) {
						nid = nid.replace( rescape, "\\$&" );
					} else {
						context.setAttribute( "id", (nid = expando) );
					}

					// Prefix every selector in the list
					groups = tokenize( selector );
					i = groups.length;
					nidselect = ridentifier.test( nid ) ? "#" + nid : "[id='" + nid + "']";
					while ( i-- ) {
						groups[i] = nidselect + " " + toSelector( groups[i] );
					}
					newSelector = groups.join( "," );

					// Expand context for sibling selectors
					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
						context;
				}

				if ( newSelector ) {
					try {
						push.apply( results,
							newContext.querySelectorAll( newSelector )
						);
						return results;
					} catch ( qsaError ) {
					} finally {
						if ( nid === expando ) {
							context.removeAttribute( "id" );
						}
					}
				}
			}
		}
	}

	// All others
	return select( selector.replace( rtrim, "$1" ), context, results, seed );
}

/**
 * Create key-value caches of limited size
 * @returns {function(string, object)} Returns the Object data after storing it on itself with
 *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
 *	deleting the oldest entry
 */
function createCache() {
	var keys = [];

	function cache( key, value ) {
		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
		if ( keys.push( key + " " ) > Expr.cacheLength ) {
			// Only keep the most recent entries
			delete cache[ keys.shift() ];
		}
		return (cache[ key + " " ] = value);
	}
	return cache;
}

/**
 * Mark a function for special use by Sizzle
 * @param {Function} fn The function to mark
 */
function markFunction( fn ) {
	fn[ expando ] = true;
	return fn;
}

/**
 * Support testing using an element
 * @param {Function} fn Passed the created div and expects a boolean result
 */
function assert( fn ) {
	var div = document.createElement("div");

	try {
		return !!fn( div );
	} catch (e) {
		return false;
	} finally {
		// Remove from its parent by default
		if ( div.parentNode ) {
			div.parentNode.removeChild( div );
		}
		// release memory in IE
		div = null;
	}
}

/**
 * Adds the same handler for all of the specified attrs
 * @param {String} attrs Pipe-separated list of attributes
 * @param {Function} handler The method that will be applied
 */
function addHandle( attrs, handler ) {
	var arr = attrs.split("|"),
		i = arr.length;

	while ( i-- ) {
		Expr.attrHandle[ arr[i] ] = handler;
	}
}

/**
 * Checks document order of two siblings
 * @param {Element} a
 * @param {Element} b
 * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
 */
function siblingCheck( a, b ) {
	var cur = b && a,
		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
			( ~b.sourceIndex || MAX_NEGATIVE ) -
			( ~a.sourceIndex || MAX_NEGATIVE );

	// Use IE sourceIndex if available on both nodes
	if ( diff ) {
		return diff;
	}

	// Check if b follows a
	if ( cur ) {
		while ( (cur = cur.nextSibling) ) {
			if ( cur === b ) {
				return -1;
			}
		}
	}

	return a ? 1 : -1;
}

/**
 * Returns a function to use in pseudos for input types
 * @param {String} type
 */
function createInputPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return name === "input" && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for buttons
 * @param {String} type
 */
function createButtonPseudo( type ) {
	return function( elem ) {
		var name = elem.nodeName.toLowerCase();
		return (name === "input" || name === "button") && elem.type === type;
	};
}

/**
 * Returns a function to use in pseudos for positionals
 * @param {Function} fn
 */
function createPositionalPseudo( fn ) {
	return markFunction(function( argument ) {
		argument = +argument;
		return markFunction(function( seed, matches ) {
			var j,
				matchIndexes = fn( [], seed.length, argument ),
				i = matchIndexes.length;

			// Match elements found at the specified indexes
			while ( i-- ) {
				if ( seed[ (j = matchIndexes[i]) ] ) {
					seed[j] = !(matches[j] = seed[j]);
				}
			}
		});
	});
}

/**
 * Checks a node for validity as a Sizzle context
 * @param {Element|Object=} context
 * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
 */
function testContext( context ) {
	return context && typeof context.getElementsByTagName !== "undefined" && context;
}

// Expose support vars for convenience
support = Sizzle.support = {};

/**
 * Detects XML nodes
 * @param {Element|Object} elem An element or a document
 * @returns {Boolean} True iff elem is a non-HTML XML node
 */
isXML = Sizzle.isXML = function( elem ) {
	// documentElement is verified for cases where it doesn't yet exist
	// (such as loading iframes in IE - #4833)
	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
	return documentElement ? documentElement.nodeName !== "HTML" : false;
};

/**
 * Sets document-related variables once based on the current document
 * @param {Element|Object} [doc] An element or document object to use to set the document
 * @returns {Object} Returns the current document
 */
setDocument = Sizzle.setDocument = function( node ) {
	var hasCompare, parent,
		doc = node ? node.ownerDocument || node : preferredDoc;

	// Return early if doc is invalid or already selected
	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
		return document;
	}

	// Update global variables
	document = doc;
	docElem = document.documentElement;
	documentIsHTML = !isXML( document );

	// Support: IE 9-11, Edge
	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
	if ( (parent = document.defaultView) && parent.top !== parent ) {
		// Support: IE 11
		if ( parent.addEventListener ) {
			parent.addEventListener( "unload", unloadHandler, false );

		// Support: IE 9 - 10 only
		} else if ( parent.attachEvent ) {
			parent.attachEvent( "onunload", unloadHandler );
		}
	}

	/* Attributes
	---------------------------------------------------------------------- */

	// Support: IE<8
	// Verify that getAttribute really returns attributes and not properties
	// (excepting IE8 booleans)
	support.attributes = assert(function( div ) {
		div.className = "i";
		return !div.getAttribute("className");
	});

	/* getElement(s)By*
	---------------------------------------------------------------------- */

	// Check if getElementsByTagName("*") returns only elements
	support.getElementsByTagName = assert(function( div ) {
		div.appendChild( document.createComment("") );
		return !div.getElementsByTagName("*").length;
	});

	// Support: IE<9
	support.getElementsByClassName = rnative.test( document.getElementsByClassName );

	// Support: IE<10
	// Check if getElementById returns elements by name
	// The broken getElementById methods don't pick up programatically-set names,
	// so use a roundabout getElementsByName test
	support.getById = assert(function( div ) {
		docElem.appendChild( div ).id = expando;
		return !document.getElementsByName || !document.getElementsByName( expando ).length;
	});

	// ID find and filter
	if ( support.getById ) {
		Expr.find["ID"] = function( id, context ) {
			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
				var m = context.getElementById( id );
				return m ? [ m ] : [];
			}
		};
		Expr.filter["ID"] = function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				return elem.getAttribute("id") === attrId;
			};
		};
	} else {
		// Support: IE6/7
		// getElementById is not reliable as a find shortcut
		delete Expr.find["ID"];

		Expr.filter["ID"] =  function( id ) {
			var attrId = id.replace( runescape, funescape );
			return function( elem ) {
				var node = typeof elem.getAttributeNode !== "undefined" &&
					elem.getAttributeNode("id");
				return node && node.value === attrId;
			};
		};
	}

	// Tag
	Expr.find["TAG"] = support.getElementsByTagName ?
		function( tag, context ) {
			if ( typeof context.getElementsByTagName !== "undefined" ) {
				return context.getElementsByTagName( tag );

			// DocumentFragment nodes don't have gEBTN
			} else if ( support.qsa ) {
				return context.querySelectorAll( tag );
			}
		} :

		function( tag, context ) {
			var elem,
				tmp = [],
				i = 0,
				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
				results = context.getElementsByTagName( tag );

			// Filter out possible comments
			if ( tag === "*" ) {
				while ( (elem = results[i++]) ) {
					if ( elem.nodeType === 1 ) {
						tmp.push( elem );
					}
				}

				return tmp;
			}
			return results;
		};

	// Class
	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
			return context.getElementsByClassName( className );
		}
	};

	/* QSA/matchesSelector
	---------------------------------------------------------------------- */

	// QSA and matchesSelector support

	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
	rbuggyMatches = [];

	// qSa(:focus) reports false when true (Chrome 21)
	// We allow this because of a bug in IE8/9 that throws an error
	// whenever `document.activeElement` is accessed on an iframe
	// So, we allow :focus to pass through QSA all the time to avoid the IE error
	// See http://bugs.jquery.com/ticket/13378
	rbuggyQSA = [];

	if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
		// Build QSA regex
		// Regex strategy adopted from Diego Perini
		assert(function( div ) {
			// Select is set to empty string on purpose
			// This is to test IE's treatment of not explicitly
			// setting a boolean content attribute,
			// since its presence should be enough
			// http://bugs.jquery.com/ticket/12359
			docElem.appendChild( div ).innerHTML = "<a id='" + expando + "'></a>" +
				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
				"<option selected=''></option></select>";

			// Support: IE8, Opera 11-12.16
			// Nothing should be selected when empty strings follow ^= or $= or *=
			// The test attribute must be unknown in Opera but "safe" for WinRT
			// http://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
			if ( div.querySelectorAll("[msallowcapture^='']").length ) {
				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
			}

			// Support: IE8
			// Boolean attributes and "value" are not treated correctly
			if ( !div.querySelectorAll("[selected]").length ) {
				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
			}

			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
			if ( !div.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
				rbuggyQSA.push("~=");
			}

			// Webkit/Opera - :checked should return selected option elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			// IE8 throws error here and will not see later tests
			if ( !div.querySelectorAll(":checked").length ) {
				rbuggyQSA.push(":checked");
			}

			// Support: Safari 8+, iOS 8+
			// https://bugs.webkit.org/show_bug.cgi?id=136851
			// In-page `selector#id sibing-combinator selector` fails
			if ( !div.querySelectorAll( "a#" + expando + "+*" ).length ) {
				rbuggyQSA.push(".#.+[+~]");
			}
		});

		assert(function( div ) {
			// Support: Windows 8 Native Apps
			// The type and name attributes are restricted during .innerHTML assignment
			var input = document.createElement("input");
			input.setAttribute( "type", "hidden" );
			div.appendChild( input ).setAttribute( "name", "D" );

			// Support: IE8
			// Enforce case-sensitivity of name attribute
			if ( div.querySelectorAll("[name=d]").length ) {
				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
			}

			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
			// IE8 throws error here and will not see later tests
			if ( !div.querySelectorAll(":enabled").length ) {
				rbuggyQSA.push( ":enabled", ":disabled" );
			}

			// Opera 10-11 does not throw on post-comma invalid pseudos
			div.querySelectorAll("*,:x");
			rbuggyQSA.push(",.*:");
		});
	}

	if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
		docElem.webkitMatchesSelector ||
		docElem.mozMatchesSelector ||
		docElem.oMatchesSelector ||
		docElem.msMatchesSelector) )) ) {

		assert(function( div ) {
			// Check to see if it's possible to do matchesSelector
			// on a disconnected node (IE 9)
			support.disconnectedMatch = matches.call( div, "div" );

			// This should fail with an exception
			// Gecko does not error, returns false instead
			matches.call( div, "[s!='']:x" );
			rbuggyMatches.push( "!=", pseudos );
		});
	}

	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );

	/* Contains
	---------------------------------------------------------------------- */
	hasCompare = rnative.test( docElem.compareDocumentPosition );

	// Element contains another
	// Purposefully self-exclusive
	// As in, an element does not contain itself
	contains = hasCompare || rnative.test( docElem.contains ) ?
		function( a, b ) {
			var adown = a.nodeType === 9 ? a.documentElement : a,
				bup = b && b.parentNode;
			return a === bup || !!( bup && bup.nodeType === 1 && (
				adown.contains ?
					adown.contains( bup ) :
					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
			));
		} :
		function( a, b ) {
			if ( b ) {
				while ( (b = b.parentNode) ) {
					if ( b === a ) {
						return true;
					}
				}
			}
			return false;
		};

	/* Sorting
	---------------------------------------------------------------------- */

	// Document order sorting
	sortOrder = hasCompare ?
	function( a, b ) {

		// Flag for duplicate removal
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		// Sort on method existence if only one input has compareDocumentPosition
		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
		if ( compare ) {
			return compare;
		}

		// Calculate position if both inputs belong to the same document
		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
			a.compareDocumentPosition( b ) :

			// Otherwise we know they are disconnected
			1;

		// Disconnected nodes
		if ( compare & 1 ||
			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {

			// Choose the first element that is related to our preferred document
			if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
				return -1;
			}
			if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
				return 1;
			}

			// Maintain original order
			return sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;
		}

		return compare & 4 ? -1 : 1;
	} :
	function( a, b ) {
		// Exit early if the nodes are identical
		if ( a === b ) {
			hasDuplicate = true;
			return 0;
		}

		var cur,
			i = 0,
			aup = a.parentNode,
			bup = b.parentNode,
			ap = [ a ],
			bp = [ b ];

		// Parentless nodes are either documents or disconnected
		if ( !aup || !bup ) {
			return a === document ? -1 :
				b === document ? 1 :
				aup ? -1 :
				bup ? 1 :
				sortInput ?
				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
				0;

		// If the nodes are siblings, we can do a quick check
		} else if ( aup === bup ) {
			return siblingCheck( a, b );
		}

		// Otherwise we need full lists of their ancestors for comparison
		cur = a;
		while ( (cur = cur.parentNode) ) {
			ap.unshift( cur );
		}
		cur = b;
		while ( (cur = cur.parentNode) ) {
			bp.unshift( cur );
		}

		// Walk down the tree looking for a discrepancy
		while ( ap[i] === bp[i] ) {
			i++;
		}

		return i ?
			// Do a sibling check if the nodes have a common ancestor
			siblingCheck( ap[i], bp[i] ) :

			// Otherwise nodes in our document sort first
			ap[i] === preferredDoc ? -1 :
			bp[i] === preferredDoc ? 1 :
			0;
	};

	return document;
};

Sizzle.matches = function( expr, elements ) {
	return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	// Make sure that attribute selectors are quoted
	expr = expr.replace( rattributeQuotes, "='$1']" );

	if ( support.matchesSelector && documentIsHTML &&
		!compilerCache[ expr + " " ] &&
		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {

		try {
			var ret = matches.call( elem, expr );

			// IE 9's matchesSelector returns false on disconnected nodes
			if ( ret || support.disconnectedMatch ||
					// As well, disconnected nodes are said to be in a document
					// fragment in IE 9
					elem.document && elem.document.nodeType !== 11 ) {
				return ret;
			}
		} catch (e) {}
	}

	return Sizzle( expr, document, null, [ elem ] ).length > 0;
};

Sizzle.contains = function( context, elem ) {
	// Set document vars if needed
	if ( ( context.ownerDocument || context ) !== document ) {
		setDocument( context );
	}
	return contains( context, elem );
};

Sizzle.attr = function( elem, name ) {
	// Set document vars if needed
	if ( ( elem.ownerDocument || elem ) !== document ) {
		setDocument( elem );
	}

	var fn = Expr.attrHandle[ name.toLowerCase() ],
		// Don't get fooled by Object.prototype properties (jQuery #13807)
		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
			fn( elem, name, !documentIsHTML ) :
			undefined;

	return val !== undefined ?
		val :
		support.attributes || !documentIsHTML ?
			elem.getAttribute( name ) :
			(val = elem.getAttributeNode(name)) && val.specified ?
				val.value :
				null;
};

Sizzle.error = function( msg ) {
	throw new Error( "Syntax error, unrecognized expression: " + msg );
};

/**
 * Document sorting and removing duplicates
 * @param {ArrayLike} results
 */
Sizzle.uniqueSort = function( results ) {
	var elem,
		duplicates = [],
		j = 0,
		i = 0;

	// Unless we *know* we can detect duplicates, assume their presence
	hasDuplicate = !support.detectDuplicates;
	sortInput = !support.sortStable && results.slice( 0 );
	results.sort( sortOrder );

	if ( hasDuplicate ) {
		while ( (elem = results[i++]) ) {
			if ( elem === results[ i ] ) {
				j = duplicates.push( i );
			}
		}
		while ( j-- ) {
			results.splice( duplicates[ j ], 1 );
		}
	}

	// Clear input after sorting to release objects
	// See https://github.com/jquery/sizzle/pull/225
	sortInput = null;

	return results;
};

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
	var node,
		ret = "",
		i = 0,
		nodeType = elem.nodeType;

	if ( !nodeType ) {
		// If no nodeType, this is expected to be an array
		while ( (node = elem[i++]) ) {
			// Do not traverse comment nodes
			ret += getText( node );
		}
	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
		// Use textContent for elements
		// innerText usage removed for consistency of new lines (jQuery #11153)
		if ( typeof elem.textContent === "string" ) {
			return elem.textContent;
		} else {
			// Traverse its children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				ret += getText( elem );
			}
		}
	} else if ( nodeType === 3 || nodeType === 4 ) {
		return elem.nodeValue;
	}
	// Do not include comment or processing instruction nodes

	return ret;
};

Expr = Sizzle.selectors = {

	// Can be adjusted by the user
	cacheLength: 50,

	createPseudo: markFunction,

	match: matchExpr,

	attrHandle: {},

	find: {},

	relative: {
		">": { dir: "parentNode", first: true },
		" ": { dir: "parentNode" },
		"+": { dir: "previousSibling", first: true },
		"~": { dir: "previousSibling" }
	},

	preFilter: {
		"ATTR": function( match ) {
			match[1] = match[1].replace( runescape, funescape );

			// Move the given value to match[3] whether quoted or unquoted
			match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );

			if ( match[2] === "~=" ) {
				match[3] = " " + match[3] + " ";
			}

			return match.slice( 0, 4 );
		},

		"CHILD": function( match ) {
			/* matches from matchExpr["CHILD"]
				1 type (only|nth|...)
				2 what (child|of-type)
				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
				4 xn-component of xn+y argument ([+-]?\d*n|)
				5 sign of xn-component
				6 x of xn-component
				7 sign of y-component
				8 y of y-component
			*/
			match[1] = match[1].toLowerCase();

			if ( match[1].slice( 0, 3 ) === "nth" ) {
				// nth-* requires argument
				if ( !match[3] ) {
					Sizzle.error( match[0] );
				}

				// numeric x and y parameters for Expr.filter.CHILD
				// remember that false/true cast respectively to 0/1
				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );

			// other types prohibit arguments
			} else if ( match[3] ) {
				Sizzle.error( match[0] );
			}

			return match;
		},

		"PSEUDO": function( match ) {
			var excess,
				unquoted = !match[6] && match[2];

			if ( matchExpr["CHILD"].test( match[0] ) ) {
				return null;
			}

			// Accept quoted arguments as-is
			if ( match[3] ) {
				match[2] = match[4] || match[5] || "";

			// Strip excess characters from unquoted arguments
			} else if ( unquoted && rpseudo.test( unquoted ) &&
				// Get excess from tokenize (recursively)
				(excess = tokenize( unquoted, true )) &&
				// advance to the next closing parenthesis
				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

				// excess is a negative index
				match[0] = match[0].slice( 0, excess );
				match[2] = unquoted.slice( 0, excess );
			}

			// Return only captures needed by the pseudo filter method (type and argument)
			return match.slice( 0, 3 );
		}
	},

	filter: {

		"TAG": function( nodeNameSelector ) {
			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
			return nodeNameSelector === "*" ?
				function() { return true; } :
				function( elem ) {
					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
				};
		},

		"CLASS": function( className ) {
			var pattern = classCache[ className + " " ];

			return pattern ||
				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
				classCache( className, function( elem ) {
					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
				});
		},

		"ATTR": function( name, operator, check ) {
			return function( elem ) {
				var result = Sizzle.attr( elem, name );

				if ( result == null ) {
					return operator === "!=";
				}
				if ( !operator ) {
					return true;
				}

				result += "";

				return operator === "=" ? result === check :
					operator === "!=" ? result !== check :
					operator === "^=" ? check && result.indexOf( check ) === 0 :
					operator === "*=" ? check && result.indexOf( check ) > -1 :
					operator === "$=" ? check && result.slice( -check.length ) === check :
					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
					false;
			};
		},

		"CHILD": function( type, what, argument, first, last ) {
			var simple = type.slice( 0, 3 ) !== "nth",
				forward = type.slice( -4 ) !== "last",
				ofType = what === "of-type";

			return first === 1 && last === 0 ?

				// Shortcut for :nth-*(n)
				function( elem ) {
					return !!elem.parentNode;
				} :

				function( elem, context, xml ) {
					var cache, uniqueCache, outerCache, node, nodeIndex, start,
						dir = simple !== forward ? "nextSibling" : "previousSibling",
						parent = elem.parentNode,
						name = ofType && elem.nodeName.toLowerCase(),
						useCache = !xml && !ofType,
						diff = false;

					if ( parent ) {

						// :(first|last|only)-(child|of-type)
						if ( simple ) {
							while ( dir ) {
								node = elem;
								while ( (node = node[ dir ]) ) {
									if ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) {

										return false;
									}
								}
								// Reverse direction for :only-* (if we haven't yet done so)
								start = dir = type === "only" && !start && "nextSibling";
							}
							return true;
						}

						start = [ forward ? parent.firstChild : parent.lastChild ];

						// non-xml :nth-child(...) stores cache data on `parent`
						if ( forward && useCache ) {

							// Seek `elem` from a previously-cached index

							// ...in a gzip-friendly way
							node = parent;
							outerCache = node[ expando ] || (node[ expando ] = {});

							// Support: IE <9 only
							// Defend against cloned attroperties (jQuery gh-1709)
							uniqueCache = outerCache[ node.uniqueID ] ||
								(outerCache[ node.uniqueID ] = {});

							cache = uniqueCache[ type ] || [];
							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
							diff = nodeIndex && cache[ 2 ];
							node = nodeIndex && parent.childNodes[ nodeIndex ];

							while ( (node = ++nodeIndex && node && node[ dir ] ||

								// Fallback to seeking `elem` from the start
								(diff = nodeIndex = 0) || start.pop()) ) {

								// When found, cache indexes on `parent` and break
								if ( node.nodeType === 1 && ++diff && node === elem ) {
									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
									break;
								}
							}

						} else {
							// Use previously-cached element index if available
							if ( useCache ) {
								// ...in a gzip-friendly way
								node = elem;
								outerCache = node[ expando ] || (node[ expando ] = {});

								// Support: IE <9 only
								// Defend against cloned attroperties (jQuery gh-1709)
								uniqueCache = outerCache[ node.uniqueID ] ||
									(outerCache[ node.uniqueID ] = {});

								cache = uniqueCache[ type ] || [];
								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
								diff = nodeIndex;
							}

							// xml :nth-child(...)
							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
							if ( diff === false ) {
								// Use the same loop as above to seek `elem` from the start
								while ( (node = ++nodeIndex && node && node[ dir ] ||
									(diff = nodeIndex = 0) || start.pop()) ) {

									if ( ( ofType ?
										node.nodeName.toLowerCase() === name :
										node.nodeType === 1 ) &&
										++diff ) {

										// Cache the index of each encountered element
										if ( useCache ) {
											outerCache = node[ expando ] || (node[ expando ] = {});

											// Support: IE <9 only
											// Defend against cloned attroperties (jQuery gh-1709)
											uniqueCache = outerCache[ node.uniqueID ] ||
												(outerCache[ node.uniqueID ] = {});

											uniqueCache[ type ] = [ dirruns, diff ];
										}

										if ( node === elem ) {
											break;
										}
									}
								}
							}
						}

						// Incorporate the offset, then check against cycle size
						diff -= last;
						return diff === first || ( diff % first === 0 && diff / first >= 0 );
					}
				};
		},

		"PSEUDO": function( pseudo, argument ) {
			// pseudo-class names are case-insensitive
			// http://www.w3.org/TR/selectors/#pseudo-classes
			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
			// Remember that setFilters inherits from pseudos
			var args,
				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
					Sizzle.error( "unsupported pseudo: " + pseudo );

			// The user may use createPseudo to indicate that
			// arguments are needed to create the filter function
			// just as Sizzle does
			if ( fn[ expando ] ) {
				return fn( argument );
			}

			// But maintain support for old signatures
			if ( fn.length > 1 ) {
				args = [ pseudo, pseudo, "", argument ];
				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
					markFunction(function( seed, matches ) {
						var idx,
							matched = fn( seed, argument ),
							i = matched.length;
						while ( i-- ) {
							idx = indexOf( seed, matched[i] );
							seed[ idx ] = !( matches[ idx ] = matched[i] );
						}
					}) :
					function( elem ) {
						return fn( elem, 0, args );
					};
			}

			return fn;
		}
	},

	pseudos: {
		// Potentially complex pseudos
		"not": markFunction(function( selector ) {
			// Trim the selector passed to compile
			// to avoid treating leading and trailing
			// spaces as combinators
			var input = [],
				results = [],
				matcher = compile( selector.replace( rtrim, "$1" ) );

			return matcher[ expando ] ?
				markFunction(function( seed, matches, context, xml ) {
					var elem,
						unmatched = matcher( seed, null, xml, [] ),
						i = seed.length;

					// Match elements unmatched by `matcher`
					while ( i-- ) {
						if ( (elem = unmatched[i]) ) {
							seed[i] = !(matches[i] = elem);
						}
					}
				}) :
				function( elem, context, xml ) {
					input[0] = elem;
					matcher( input, null, xml, results );
					// Don't keep the element (issue #299)
					input[0] = null;
					return !results.pop();
				};
		}),

		"has": markFunction(function( selector ) {
			return function( elem ) {
				return Sizzle( selector, elem ).length > 0;
			};
		}),

		"contains": markFunction(function( text ) {
			text = text.replace( runescape, funescape );
			return function( elem ) {
				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
			};
		}),

		// "Whether an element is represented by a :lang() selector
		// is based solely on the element's language value
		// being equal to the identifier C,
		// or beginning with the identifier C immediately followed by "-".
		// The matching of C against the element's language value is performed case-insensitively.
		// The identifier C does not have to be a valid language name."
		// http://www.w3.org/TR/selectors/#lang-pseudo
		"lang": markFunction( function( lang ) {
			// lang value must be a valid identifier
			if ( !ridentifier.test(lang || "") ) {
				Sizzle.error( "unsupported lang: " + lang );
			}
			lang = lang.replace( runescape, funescape ).toLowerCase();
			return function( elem ) {
				var elemLang;
				do {
					if ( (elemLang = documentIsHTML ?
						elem.lang :
						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {

						elemLang = elemLang.toLowerCase();
						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
					}
				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
				return false;
			};
		}),

		// Miscellaneous
		"target": function( elem ) {
			var hash = window.location && window.location.hash;
			return hash && hash.slice( 1 ) === elem.id;
		},

		"root": function( elem ) {
			return elem === docElem;
		},

		"focus": function( elem ) {
			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
		},

		// Boolean properties
		"enabled": function( elem ) {
			return elem.disabled === false;
		},

		"disabled": function( elem ) {
			return elem.disabled === true;
		},

		"checked": function( elem ) {
			// In CSS3, :checked should return both checked and selected elements
			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
			var nodeName = elem.nodeName.toLowerCase();
			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
		},

		"selected": function( elem ) {
			// Accessing this property makes selected-by-default
			// options in Safari work properly
			if ( elem.parentNode ) {
				elem.parentNode.selectedIndex;
			}

			return elem.selected === true;
		},

		// Contents
		"empty": function( elem ) {
			// http://www.w3.org/TR/selectors/#empty-pseudo
			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
			//   but not by others (comment: 8; processing instruction: 7; etc.)
			// nodeType < 6 works because attributes (2) do not appear as children
			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
				if ( elem.nodeType < 6 ) {
					return false;
				}
			}
			return true;
		},

		"parent": function( elem ) {
			return !Expr.pseudos["empty"]( elem );
		},

		// Element/input types
		"header": function( elem ) {
			return rheader.test( elem.nodeName );
		},

		"input": function( elem ) {
			return rinputs.test( elem.nodeName );
		},

		"button": function( elem ) {
			var name = elem.nodeName.toLowerCase();
			return name === "input" && elem.type === "button" || name === "button";
		},

		"text": function( elem ) {
			var attr;
			return elem.nodeName.toLowerCase() === "input" &&
				elem.type === "text" &&

				// Support: IE<8
				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
		},

		// Position-in-collection
		"first": createPositionalPseudo(function() {
			return [ 0 ];
		}),

		"last": createPositionalPseudo(function( matchIndexes, length ) {
			return [ length - 1 ];
		}),

		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
			return [ argument < 0 ? argument + length : argument ];
		}),

		"even": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 0;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"odd": createPositionalPseudo(function( matchIndexes, length ) {
			var i = 1;
			for ( ; i < length; i += 2 ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; --i >= 0; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		}),

		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
			var i = argument < 0 ? argument + length : argument;
			for ( ; ++i < length; ) {
				matchIndexes.push( i );
			}
			return matchIndexes;
		})
	}
};

Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Add button/input type pseudos
for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
	Expr.pseudos[ i ] = createInputPseudo( i );
}
for ( i in { submit: true, reset: true } ) {
	Expr.pseudos[ i ] = createButtonPseudo( i );
}

// Easy API for creating new setFilters
function setFilters() {}
setFilters.prototype = Expr.filters = Expr.pseudos;
Expr.setFilters = new setFilters();

tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
	var matched, match, tokens, type,
		soFar, groups, preFilters,
		cached = tokenCache[ selector + " " ];

	if ( cached ) {
		return parseOnly ? 0 : cached.slice( 0 );
	}

	soFar = selector;
	groups = [];
	preFilters = Expr.preFilter;

	while ( soFar ) {

		// Comma and first run
		if ( !matched || (match = rcomma.exec( soFar )) ) {
			if ( match ) {
				// Don't consume trailing commas as valid
				soFar = soFar.slice( match[0].length ) || soFar;
			}
			groups.push( (tokens = []) );
		}

		matched = false;

		// Combinators
		if ( (match = rcombinators.exec( soFar )) ) {
			matched = match.shift();
			tokens.push({
				value: matched,
				// Cast descendant combinators to space
				type: match[0].replace( rtrim, " " )
			});
			soFar = soFar.slice( matched.length );
		}

		// Filters
		for ( type in Expr.filter ) {
			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
				(match = preFilters[ type ]( match ))) ) {
				matched = match.shift();
				tokens.push({
					value: matched,
					type: type,
					matches: match
				});
				soFar = soFar.slice( matched.length );
			}
		}

		if ( !matched ) {
			break;
		}
	}

	// Return the length of the invalid excess
	// if we're just parsing
	// Otherwise, throw an error or return tokens
	return parseOnly ?
		soFar.length :
		soFar ?
			Sizzle.error( selector ) :
			// Cache the tokens
			tokenCache( selector, groups ).slice( 0 );
};

function toSelector( tokens ) {
	var i = 0,
		len = tokens.length,
		selector = "";
	for ( ; i < len; i++ ) {
		selector += tokens[i].value;
	}
	return selector;
}

function addCombinator( matcher, combinator, base ) {
	var dir = combinator.dir,
		checkNonElements = base && dir === "parentNode",
		doneName = done++;

	return combinator.first ?
		// Check against closest ancestor/preceding element
		function( elem, context, xml ) {
			while ( (elem = elem[ dir ]) ) {
				if ( elem.nodeType === 1 || checkNonElements ) {
					return matcher( elem, context, xml );
				}
			}
		} :

		// Check against all ancestor/preceding elements
		function( elem, context, xml ) {
			var oldCache, uniqueCache, outerCache,
				newCache = [ dirruns, doneName ];

			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
			if ( xml ) {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						if ( matcher( elem, context, xml ) ) {
							return true;
						}
					}
				}
			} else {
				while ( (elem = elem[ dir ]) ) {
					if ( elem.nodeType === 1 || checkNonElements ) {
						outerCache = elem[ expando ] || (elem[ expando ] = {});

						// Support: IE <9 only
						// Defend against cloned attroperties (jQuery gh-1709)
						uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});

						if ( (oldCache = uniqueCache[ dir ]) &&
							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {

							// Assign to newCache so results back-propagate to previous elements
							return (newCache[ 2 ] = oldCache[ 2 ]);
						} else {
							// Reuse newcache so results back-propagate to previous elements
							uniqueCache[ dir ] = newCache;

							// A match means we're done; a fail means we have to keep checking
							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
								return true;
							}
						}
					}
				}
			}
		};
}

function elementMatcher( matchers ) {
	return matchers.length > 1 ?
		function( elem, context, xml ) {
			var i = matchers.length;
			while ( i-- ) {
				if ( !matchers[i]( elem, context, xml ) ) {
					return false;
				}
			}
			return true;
		} :
		matchers[0];
}

function multipleContexts( selector, contexts, results ) {
	var i = 0,
		len = contexts.length;
	for ( ; i < len; i++ ) {
		Sizzle( selector, contexts[i], results );
	}
	return results;
}

function condense( unmatched, map, filter, context, xml ) {
	var elem,
		newUnmatched = [],
		i = 0,
		len = unmatched.length,
		mapped = map != null;

	for ( ; i < len; i++ ) {
		if ( (elem = unmatched[i]) ) {
			if ( !filter || filter( elem, context, xml ) ) {
				newUnmatched.push( elem );
				if ( mapped ) {
					map.push( i );
				}
			}
		}
	}

	return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
	if ( postFilter && !postFilter[ expando ] ) {
		postFilter = setMatcher( postFilter );
	}
	if ( postFinder && !postFinder[ expando ] ) {
		postFinder = setMatcher( postFinder, postSelector );
	}
	return markFunction(function( seed, results, context, xml ) {
		var temp, i, elem,
			preMap = [],
			postMap = [],
			preexisting = results.length,

			// Get initial elements from seed or context
			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

			// Prefilter to get matcher input, preserving a map for seed-results synchronization
			matcherIn = preFilter && ( seed || !selector ) ?
				condense( elems, preMap, preFilter, context, xml ) :
				elems,

			matcherOut = matcher ?
				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

					// ...intermediate processing is necessary
					[] :

					// ...otherwise use results directly
					results :
				matcherIn;

		// Find primary matches
		if ( matcher ) {
			matcher( matcherIn, matcherOut, context, xml );
		}

		// Apply postFilter
		if ( postFilter ) {
			temp = condense( matcherOut, postMap );
			postFilter( temp, [], context, xml );

			// Un-match failing elements by moving them back to matcherIn
			i = temp.length;
			while ( i-- ) {
				if ( (elem = temp[i]) ) {
					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
				}
			}
		}

		if ( seed ) {
			if ( postFinder || preFilter ) {
				if ( postFinder ) {
					// Get the final matcherOut by condensing this intermediate into postFinder contexts
					temp = [];
					i = matcherOut.length;
					while ( i-- ) {
						if ( (elem = matcherOut[i]) ) {
							// Restore matcherIn since elem is not yet a final match
							temp.push( (matcherIn[i] = elem) );
						}
					}
					postFinder( null, (matcherOut = []), temp, xml );
				}

				// Move matched elements from seed to results to keep them synchronized
				i = matcherOut.length;
				while ( i-- ) {
					if ( (elem = matcherOut[i]) &&
						(temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {

						seed[temp] = !(results[temp] = elem);
					}
				}
			}

		// Add elements to results, through postFinder if defined
		} else {
			matcherOut = condense(
				matcherOut === results ?
					matcherOut.splice( preexisting, matcherOut.length ) :
					matcherOut
			);
			if ( postFinder ) {
				postFinder( null, results, matcherOut, xml );
			} else {
				push.apply( results, matcherOut );
			}
		}
	});
}

function matcherFromTokens( tokens ) {
	var checkContext, matcher, j,
		len = tokens.length,
		leadingRelative = Expr.relative[ tokens[0].type ],
		implicitRelative = leadingRelative || Expr.relative[" "],
		i = leadingRelative ? 1 : 0,

		// The foundational matcher ensures that elements are reachable from top-level context(s)
		matchContext = addCombinator( function( elem ) {
			return elem === checkContext;
		}, implicitRelative, true ),
		matchAnyContext = addCombinator( function( elem ) {
			return indexOf( checkContext, elem ) > -1;
		}, implicitRelative, true ),
		matchers = [ function( elem, context, xml ) {
			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
				(checkContext = context).nodeType ?
					matchContext( elem, context, xml ) :
					matchAnyContext( elem, context, xml ) );
			// Avoid hanging onto element (issue #299)
			checkContext = null;
			return ret;
		} ];

	for ( ; i < len; i++ ) {
		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
		} else {
			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

			// Return special upon seeing a positional matcher
			if ( matcher[ expando ] ) {
				// Find the next relative operator (if any) for proper handling
				j = ++i;
				for ( ; j < len; j++ ) {
					if ( Expr.relative[ tokens[j].type ] ) {
						break;
					}
				}
				return setMatcher(
					i > 1 && elementMatcher( matchers ),
					i > 1 && toSelector(
						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
					).replace( rtrim, "$1" ),
					matcher,
					i < j && matcherFromTokens( tokens.slice( i, j ) ),
					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
					j < len && toSelector( tokens )
				);
			}
			matchers.push( matcher );
		}
	}

	return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
	var bySet = setMatchers.length > 0,
		byElement = elementMatchers.length > 0,
		superMatcher = function( seed, context, xml, results, outermost ) {
			var elem, j, matcher,
				matchedCount = 0,
				i = "0",
				unmatched = seed && [],
				setMatched = [],
				contextBackup = outermostContext,
				// We must always have either seed elements or outermost context
				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
				// Use integer dirruns iff this is the outermost matcher
				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
				len = elems.length;

			if ( outermost ) {
				outermostContext = context === document || context || outermost;
			}

			// Add elements passing elementMatchers directly to results
			// Support: IE<9, Safari
			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
				if ( byElement && elem ) {
					j = 0;
					if ( !context && elem.ownerDocument !== document ) {
						setDocument( elem );
						xml = !documentIsHTML;
					}
					while ( (matcher = elementMatchers[j++]) ) {
						if ( matcher( elem, context || document, xml) ) {
							results.push( elem );
							break;
						}
					}
					if ( outermost ) {
						dirruns = dirrunsUnique;
					}
				}

				// Track unmatched elements for set filters
				if ( bySet ) {
					// They will have gone through all possible matchers
					if ( (elem = !matcher && elem) ) {
						matchedCount--;
					}

					// Lengthen the array for every element, matched or not
					if ( seed ) {
						unmatched.push( elem );
					}
				}
			}

			// `i` is now the count of elements visited above, and adding it to `matchedCount`
			// makes the latter nonnegative.
			matchedCount += i;

			// Apply set filters to unmatched elements
			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
			// no element matchers and no seed.
			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
			// numerically zero.
			if ( bySet && i !== matchedCount ) {
				j = 0;
				while ( (matcher = setMatchers[j++]) ) {
					matcher( unmatched, setMatched, context, xml );
				}

				if ( seed ) {
					// Reintegrate element matches to eliminate the need for sorting
					if ( matchedCount > 0 ) {
						while ( i-- ) {
							if ( !(unmatched[i] || setMatched[i]) ) {
								setMatched[i] = pop.call( results );
							}
						}
					}

					// Discard index placeholder values to get only actual matches
					setMatched = condense( setMatched );
				}

				// Add matches to results
				push.apply( results, setMatched );

				// Seedless set matches succeeding multiple successful matchers stipulate sorting
				if ( outermost && !seed && setMatched.length > 0 &&
					( matchedCount + setMatchers.length ) > 1 ) {

					Sizzle.uniqueSort( results );
				}
			}

			// Override manipulation of globals by nested matchers
			if ( outermost ) {
				dirruns = dirrunsUnique;
				outermostContext = contextBackup;
			}

			return unmatched;
		};

	return bySet ?
		markFunction( superMatcher ) :
		superMatcher;
}

compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
	var i,
		setMatchers = [],
		elementMatchers = [],
		cached = compilerCache[ selector + " " ];

	if ( !cached ) {
		// Generate a function of recursive functions that can be used to check each element
		if ( !match ) {
			match = tokenize( selector );
		}
		i = match.length;
		while ( i-- ) {
			cached = matcherFromTokens( match[i] );
			if ( cached[ expando ] ) {
				setMatchers.push( cached );
			} else {
				elementMatchers.push( cached );
			}
		}

		// Cache the compiled function
		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );

		// Save selector and tokenization
		cached.selector = selector;
	}
	return cached;
};

/**
 * A low-level selection function that works with Sizzle's compiled
 *  selector functions
 * @param {String|Function} selector A selector or a pre-compiled
 *  selector function built with Sizzle.compile
 * @param {Element} context
 * @param {Array} [results]
 * @param {Array} [seed] A set of elements to match against
 */
select = Sizzle.select = function( selector, context, results, seed ) {
	var i, tokens, token, type, find,
		compiled = typeof selector === "function" && selector,
		match = !seed && tokenize( (selector = compiled.selector || selector) );

	results = results || [];

	// Try to minimize operations if there is only one selector in the list and no seed
	// (the latter of which guarantees us context)
	if ( match.length === 1 ) {

		// Reduce context if the leading compound selector is an ID
		tokens = match[0] = match[0].slice( 0 );
		if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
				support.getById && context.nodeType === 9 && documentIsHTML &&
				Expr.relative[ tokens[1].type ] ) {

			context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
			if ( !context ) {
				return results;

			// Precompiled matchers will still verify ancestry, so step up a level
			} else if ( compiled ) {
				context = context.parentNode;
			}

			selector = selector.slice( tokens.shift().value.length );
		}

		// Fetch a seed set for right-to-left matching
		i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
		while ( i-- ) {
			token = tokens[i];

			// Abort if we hit a combinator
			if ( Expr.relative[ (type = token.type) ] ) {
				break;
			}
			if ( (find = Expr.find[ type ]) ) {
				// Search, expanding context for leading sibling combinators
				if ( (seed = find(
					token.matches[0].replace( runescape, funescape ),
					rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
				)) ) {

					// If seed is empty or no tokens remain, we can return early
					tokens.splice( i, 1 );
					selector = seed.length && toSelector( tokens );
					if ( !selector ) {
						push.apply( results, seed );
						return results;
					}

					break;
				}
			}
		}
	}

	// Compile and execute a filtering function if one is not provided
	// Provide `match` to avoid retokenization if we modified the selector above
	( compiled || compile( selector, match ) )(
		seed,
		context,
		!documentIsHTML,
		results,
		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
	);
	return results;
};

// One-time assignments

// Sort stability
support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;

// Support: Chrome 14-35+
// Always assume duplicates if they aren't passed to the comparison function
support.detectDuplicates = !!hasDuplicate;

// Initialize against the default document
setDocument();

// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
// Detached nodes confoundingly follow *each other*
support.sortDetached = assert(function( div1 ) {
	// Should return 1, but returns 4 (following)
	return div1.compareDocumentPosition( document.createElement("div") ) & 1;
});

// Support: IE<8
// Prevent attribute/property "interpolation"
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( div ) {
	div.innerHTML = "<a href='#'></a>";
	return div.firstChild.getAttribute("href") === "#" ;
}) ) {
	addHandle( "type|href|height|width", function( elem, name, isXML ) {
		if ( !isXML ) {
			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
		}
	});
}

// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert(function( div ) {
	div.innerHTML = "<input/>";
	div.firstChild.setAttribute( "value", "" );
	return div.firstChild.getAttribute( "value" ) === "";
}) ) {
	addHandle( "value", function( elem, name, isXML ) {
		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
			return elem.defaultValue;
		}
	});
}

// Support: IE<9
// Use getAttributeNode to fetch booleans when getAttribute lies
if ( !assert(function( div ) {
	return div.getAttribute("disabled") == null;
}) ) {
	addHandle( booleans, function( elem, name, isXML ) {
		var val;
		if ( !isXML ) {
			return elem[ name ] === true ? name.toLowerCase() :
					(val = elem.getAttributeNode( name )) && val.specified ?
					val.value :
				null;
		}
	});
}

return Sizzle;

})( window );



jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;
jQuery.expr[ ":" ] = jQuery.expr.pseudos;
jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains;



var dir = function( elem, dir, until ) {
	var matched = [],
		truncate = until !== undefined;

	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
		if ( elem.nodeType === 1 ) {
			if ( truncate && jQuery( elem ).is( until ) ) {
				break;
			}
			matched.push( elem );
		}
	}
	return matched;
};


var siblings = function( n, elem ) {
	var matched = [];

	for ( ; n; n = n.nextSibling ) {
		if ( n.nodeType === 1 && n !== elem ) {
			matched.push( n );
		}
	}

	return matched;
};


var rneedsContext = jQuery.expr.match.needsContext;

var rsingleTag = ( /^<([\w-]+)\s*\/?>(?:<\/\1>|)$/ );



var risSimple = /^.[^:#\[\.,]*$/;

// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
	if ( jQuery.isFunction( qualifier ) ) {
		return jQuery.grep( elements, function( elem, i ) {
			/* jshint -W018 */
			return !!qualifier.call( elem, i, elem ) !== not;
		} );

	}

	if ( qualifier.nodeType ) {
		return jQuery.grep( elements, function( elem ) {
			return ( elem === qualifier ) !== not;
		} );

	}

	if ( typeof qualifier === "string" ) {
		if ( risSimple.test( qualifier ) ) {
			return jQuery.filter( qualifier, elements, not );
		}

		qualifier = jQuery.filter( qualifier, elements );
	}

	return jQuery.grep( elements, function( elem ) {
		return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
	} );
}

jQuery.filter = function( expr, elems, not ) {
	var elem = elems[ 0 ];

	if ( not ) {
		expr = ":not(" + expr + ")";
	}

	return elems.length === 1 && elem.nodeType === 1 ?
		jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
		jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
			return elem.nodeType === 1;
		} ) );
};

jQuery.fn.extend( {
	find: function( selector ) {
		var i,
			len = this.length,
			ret = [],
			self = this;

		if ( typeof selector !== "string" ) {
			return this.pushStack( jQuery( selector ).filter( function() {
				for ( i = 0; i < len; i++ ) {
					if ( jQuery.contains( self[ i ], this ) ) {
						return true;
					}
				}
			} ) );
		}

		for ( i = 0; i < len; i++ ) {
			jQuery.find( selector, self[ i ], ret );
		}

		// Needed because $( selector, context ) becomes $( context ).find( selector )
		ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
		ret.selector = this.selector ? this.selector + " " + selector : selector;
		return ret;
	},
	filter: function( selector ) {
		return this.pushStack( winnow( this, selector || [], false ) );
	},
	not: function( selector ) {
		return this.pushStack( winnow( this, selector || [], true ) );
	},
	is: function( selector ) {
		return !!winnow(
			this,

			// If this is a positional/relative selector, check membership in the returned set
			// so $("p:first").is("p:last") won't return true for a doc with two "p".
			typeof selector === "string" && rneedsContext.test( selector ) ?
				jQuery( selector ) :
				selector || [],
			false
		).length;
	}
} );


// Initialize a jQuery object


// A central reference to the root jQuery(document)
var rootjQuery,

	// A simple way to check for HTML strings
	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
	// Strict HTML recognition (#11290: must start with <)
	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,

	init = jQuery.fn.init = function( selector, context, root ) {
		var match, elem;

		// HANDLE: $(""), $(null), $(undefined), $(false)
		if ( !selector ) {
			return this;
		}

		// Method init() accepts an alternate rootjQuery
		// so migrate can support jQuery.sub (gh-2101)
		root = root || rootjQuery;

		// Handle HTML strings
		if ( typeof selector === "string" ) {
			if ( selector[ 0 ] === "<" &&
				selector[ selector.length - 1 ] === ">" &&
				selector.length >= 3 ) {

				// Assume that strings that start and end with <> are HTML and skip the regex check
				match = [ null, selector, null ];

			} else {
				match = rquickExpr.exec( selector );
			}

			// Match html or make sure no context is specified for #id
			if ( match && ( match[ 1 ] || !context ) ) {

				// HANDLE: $(html) -> $(array)
				if ( match[ 1 ] ) {
					context = context instanceof jQuery ? context[ 0 ] : context;

					// Option to run scripts is true for back-compat
					// Intentionally let the error be thrown if parseHTML is not present
					jQuery.merge( this, jQuery.parseHTML(
						match[ 1 ],
						context && context.nodeType ? context.ownerDocument || context : document,
						true
					) );

					// HANDLE: $(html, props)
					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
						for ( match in context ) {

							// Properties of context are called as methods if possible
							if ( jQuery.isFunction( this[ match ] ) ) {
								this[ match ]( context[ match ] );

							// ...and otherwise set as attributes
							} else {
								this.attr( match, context[ match ] );
							}
						}
					}

					return this;

				// HANDLE: $(#id)
				} else {
					elem = document.getElementById( match[ 2 ] );

					// Support: Blackberry 4.6
					// gEBID returns nodes no longer in the document (#6963)
					if ( elem && elem.parentNode ) {

						// Inject the element directly into the jQuery object
						this.length = 1;
						this[ 0 ] = elem;
					}

					this.context = document;
					this.selector = selector;
					return this;
				}

			// HANDLE: $(expr, $(...))
			} else if ( !context || context.jquery ) {
				return ( context || root ).find( selector );

			// HANDLE: $(expr, context)
			// (which is just equivalent to: $(context).find(expr)
			} else {
				return this.constructor( context ).find( selector );
			}

		// HANDLE: $(DOMElement)
		} else if ( selector.nodeType ) {
			this.context = this[ 0 ] = selector;
			this.length = 1;
			return this;

		// HANDLE: $(function)
		// Shortcut for document ready
		} else if ( jQuery.isFunction( selector ) ) {
			return root.ready !== undefined ?
				root.ready( selector ) :

				// Execute immediately if ready is not present
				selector( jQuery );
		}

		if ( selector.selector !== undefined ) {
			this.selector = selector.selector;
			this.context = selector.context;
		}

		return jQuery.makeArray( selector, this );
	};

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );


var rparentsprev = /^(?:parents|prev(?:Until|All))/,

	// Methods guaranteed to produce a unique set when starting from a unique set
	guaranteedUnique = {
		children: true,
		contents: true,
		next: true,
		prev: true
	};

jQuery.fn.extend( {
	has: function( target ) {
		var targets = jQuery( target, this ),
			l = targets.length;

		return this.filter( function() {
			var i = 0;
			for ( ; i < l; i++ ) {
				if ( jQuery.contains( this, targets[ i ] ) ) {
					return true;
				}
			}
		} );
	},

	closest: function( selectors, context ) {
		var cur,
			i = 0,
			l = this.length,
			matched = [],
			pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
				jQuery( selectors, context || this.context ) :
				0;

		for ( ; i < l; i++ ) {
			for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {

				// Always skip document fragments
				if ( cur.nodeType < 11 && ( pos ?
					pos.index( cur ) > -1 :

					// Don't pass non-elements to Sizzle
					cur.nodeType === 1 &&
						jQuery.find.matchesSelector( cur, selectors ) ) ) {

					matched.push( cur );
					break;
				}
			}
		}

		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
	},

	// Determine the position of an element within the set
	index: function( elem ) {

		// No argument, return index in parent
		if ( !elem ) {
			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
		}

		// Index in selector
		if ( typeof elem === "string" ) {
			return indexOf.call( jQuery( elem ), this[ 0 ] );
		}

		// Locate the position of the desired element
		return indexOf.call( this,

			// If it receives a jQuery object, the first element is used
			elem.jquery ? elem[ 0 ] : elem
		);
	},

	add: function( selector, context ) {
		return this.pushStack(
			jQuery.uniqueSort(
				jQuery.merge( this.get(), jQuery( selector, context ) )
			)
		);
	},

	addBack: function( selector ) {
		return this.add( selector == null ?
			this.prevObject : this.prevObject.filter( selector )
		);
	}
} );

function sibling( cur, dir ) {
	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
	return cur;
}

jQuery.each( {
	parent: function( elem ) {
		var parent = elem.parentNode;
		return parent && parent.nodeType !== 11 ? parent : null;
	},
	parents: function( elem ) {
		return dir( elem, "parentNode" );
	},
	parentsUntil: function( elem, i, until ) {
		return dir( elem, "parentNode", until );
	},
	next: function( elem ) {
		return sibling( elem, "nextSibling" );
	},
	prev: function( elem ) {
		return sibling( elem, "previousSibling" );
	},
	nextAll: function( elem ) {
		return dir( elem, "nextSibling" );
	},
	prevAll: function( elem ) {
		return dir( elem, "previousSibling" );
	},
	nextUntil: function( elem, i, until ) {
		return dir( elem, "nextSibling", until );
	},
	prevUntil: function( elem, i, until ) {
		return dir( elem, "previousSibling", until );
	},
	siblings: function( elem ) {
		return siblings( ( elem.parentNode || {} ).firstChild, elem );
	},
	children: function( elem ) {
		return siblings( elem.firstChild );
	},
	contents: function( elem ) {
		return elem.contentDocument || jQuery.merge( [], elem.childNodes );
	}
}, function( name, fn ) {
	jQuery.fn[ name ] = function( until, selector ) {
		var matched = jQuery.map( this, fn, until );

		if ( name.slice( -5 ) !== "Until" ) {
			selector = until;
		}

		if ( selector && typeof selector === "string" ) {
			matched = jQuery.filter( selector, matched );
		}

		if ( this.length > 1 ) {

			// Remove duplicates
			if ( !guaranteedUnique[ name ] ) {
				jQuery.uniqueSort( matched );
			}

			// Reverse order for parents* and prev-derivatives
			if ( rparentsprev.test( name ) ) {
				matched.reverse();
			}
		}

		return this.pushStack( matched );
	};
} );
var rnotwhite = ( /\S+/g );



// Convert String-formatted options into Object-formatted ones
function createOptions( options ) {
	var object = {};
	jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) {
		object[ flag ] = true;
	} );
	return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *	options: an optional list of space-separated options that will change how
 *			the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *	once:			will ensure the callback list can only be fired once (like a Deferred)
 *
 *	memory:			will keep track of previous values and will call any callback added
 *					after the list has been fired right away with the latest "memorized"
 *					values (like a Deferred)
 *
 *	unique:			will ensure a callback can only be added once (no duplicate in the list)
 *
 *	stopOnFalse:	interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

	// Convert options from String-formatted to Object-formatted if needed
	// (we check in cache first)
	options = typeof options === "string" ?
		createOptions( options ) :
		jQuery.extend( {}, options );

	var // Flag to know if list is currently firing
		firing,

		// Last fire value for non-forgettable lists
		memory,

		// Flag to know if list was already fired
		fired,

		// Flag to prevent firing
		locked,

		// Actual callback list
		list = [],

		// Queue of execution data for repeatable lists
		queue = [],

		// Index of currently firing callback (modified by add/remove as needed)
		firingIndex = -1,

		// Fire callbacks
		fire = function() {

			// Enforce single-firing
			locked = options.once;

			// Execute callbacks for all pending executions,
			// respecting firingIndex overrides and runtime changes
			fired = firing = true;
			for ( ; queue.length; firingIndex = -1 ) {
				memory = queue.shift();
				while ( ++firingIndex < list.length ) {

					// Run callback and check for early termination
					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
						options.stopOnFalse ) {

						// Jump to end and forget the data so .add doesn't re-fire
						firingIndex = list.length;
						memory = false;
					}
				}
			}

			// Forget the data if we're done with it
			if ( !options.memory ) {
				memory = false;
			}

			firing = false;

			// Clean up if we're done firing for good
			if ( locked ) {

				// Keep an empty list if we have data for future add calls
				if ( memory ) {
					list = [];

				// Otherwise, this object is spent
				} else {
					list = "";
				}
			}
		},

		// Actual Callbacks object
		self = {

			// Add a callback or a collection of callbacks to the list
			add: function() {
				if ( list ) {

					// If we have memory from a past run, we should fire after adding
					if ( memory && !firing ) {
						firingIndex = list.length - 1;
						queue.push( memory );
					}

					( function add( args ) {
						jQuery.each( args, function( _, arg ) {
							if ( jQuery.isFunction( arg ) ) {
								if ( !options.unique || !self.has( arg ) ) {
									list.push( arg );
								}
							} else if ( arg && arg.length && jQuery.type( arg ) !== "string" ) {

								// Inspect recursively
								add( arg );
							}
						} );
					} )( arguments );

					if ( memory && !firing ) {
						fire();
					}
				}
				return this;
			},

			// Remove a callback from the list
			remove: function() {
				jQuery.each( arguments, function( _, arg ) {
					var index;
					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
						list.splice( index, 1 );

						// Handle firing indexes
						if ( index <= firingIndex ) {
							firingIndex--;
						}
					}
				} );
				return this;
			},

			// Check if a given callback is in the list.
			// If no argument is given, return whether or not list has callbacks attached.
			has: function( fn ) {
				return fn ?
					jQuery.inArray( fn, list ) > -1 :
					list.length > 0;
			},

			// Remove all callbacks from the list
			empty: function() {
				if ( list ) {
					list = [];
				}
				return this;
			},

			// Disable .fire and .add
			// Abort any current/pending executions
			// Clear all callbacks and values
			disable: function() {
				locked = queue = [];
				list = memory = "";
				return this;
			},
			disabled: function() {
				return !list;
			},

			// Disable .fire
			// Also disable .add unless we have memory (since it would have no effect)
			// Abort any pending executions
			lock: function() {
				locked = queue = [];
				if ( !memory ) {
					list = memory = "";
				}
				return this;
			},
			locked: function() {
				return !!locked;
			},

			// Call all callbacks with the given context and arguments
			fireWith: function( context, args ) {
				if ( !locked ) {
					args = args || [];
					args = [ context, args.slice ? args.slice() : args ];
					queue.push( args );
					if ( !firing ) {
						fire();
					}
				}
				return this;
			},

			// Call all the callbacks with the given arguments
			fire: function() {
				self.fireWith( this, arguments );
				return this;
			},

			// To know if the callbacks have already been called at least once
			fired: function() {
				return !!fired;
			}
		};

	return self;
};


jQuery.extend( {

	Deferred: function( func ) {
		var tuples = [

				// action, add listener, listener list, final state
				[ "resolve", "done", jQuery.Callbacks( "once memory" ), "resolved" ],
				[ "reject", "fail", jQuery.Callbacks( "once memory" ), "rejected" ],
				[ "notify", "progress", jQuery.Callbacks( "memory" ) ]
			],
			state = "pending",
			promise = {
				state: function() {
					return state;
				},
				always: function() {
					deferred.done( arguments ).fail( arguments );
					return this;
				},
				then: function( /* fnDone, fnFail, fnProgress */ ) {
					var fns = arguments;
					return jQuery.Deferred( function( newDefer ) {
						jQuery.each( tuples, function( i, tuple ) {
							var fn = jQuery.isFunction( fns[ i ] ) && fns[ i ];

							// deferred[ done | fail | progress ] for forwarding actions to newDefer
							deferred[ tuple[ 1 ] ]( function() {
								var returned = fn && fn.apply( this, arguments );
								if ( returned && jQuery.isFunction( returned.promise ) ) {
									returned.promise()
										.progress( newDefer.notify )
										.done( newDefer.resolve )
										.fail( newDefer.reject );
								} else {
									newDefer[ tuple[ 0 ] + "With" ](
										this === promise ? newDefer.promise() : this,
										fn ? [ returned ] : arguments
									);
								}
							} );
						} );
						fns = null;
					} ).promise();
				},

				// Get a promise for this deferred
				// If obj is provided, the promise aspect is added to the object
				promise: function( obj ) {
					return obj != null ? jQuery.extend( obj, promise ) : promise;
				}
			},
			deferred = {};

		// Keep pipe for back-compat
		promise.pipe = promise.then;

		// Add list-specific methods
		jQuery.each( tuples, function( i, tuple ) {
			var list = tuple[ 2 ],
				stateString = tuple[ 3 ];

			// promise[ done | fail | progress ] = list.add
			promise[ tuple[ 1 ] ] = list.add;

			// Handle state
			if ( stateString ) {
				list.add( function() {

					// state = [ resolved | rejected ]
					state = stateString;

				// [ reject_list | resolve_list ].disable; progress_list.lock
				}, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
			}

			// deferred[ resolve | reject | notify ]
			deferred[ tuple[ 0 ] ] = function() {
				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? promise : this, arguments );
				return this;
			};
			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
		} );

		// Make the deferred a promise
		promise.promise( deferred );

		// Call given func if any
		if ( func ) {
			func.call( deferred, deferred );
		}

		// All done!
		return deferred;
	},

	// Deferred helper
	when: function( subordinate /* , ..., subordinateN */ ) {
		var i = 0,
			resolveValues = slice.call( arguments ),
			length = resolveValues.length,

			// the count of uncompleted subordinates
			remaining = length !== 1 ||
				( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,

			// the master Deferred.
			// If resolveValues consist of only a single Deferred, just use that.
			deferred = remaining === 1 ? subordinate : jQuery.Deferred(),

			// Update function for both resolve and progress values
			updateFunc = function( i, contexts, values ) {
				return function( value ) {
					contexts[ i ] = this;
					values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
					if ( values === progressValues ) {
						deferred.notifyWith( contexts, values );
					} else if ( !( --remaining ) ) {
						deferred.resolveWith( contexts, values );
					}
				};
			},

			progressValues, progressContexts, resolveContexts;

		// Add listeners to Deferred subordinates; treat others as resolved
		if ( length > 1 ) {
			progressValues = new Array( length );
			progressContexts = new Array( length );
			resolveContexts = new Array( length );
			for ( ; i < length; i++ ) {
				if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
					resolveValues[ i ].promise()
						.progress( updateFunc( i, progressContexts, progressValues ) )
						.done( updateFunc( i, resolveContexts, resolveValues ) )
						.fail( deferred.reject );
				} else {
					--remaining;
				}
			}
		}

		// If we're not waiting on anything, resolve the master
		if ( !remaining ) {
			deferred.resolveWith( resolveContexts, resolveValues );
		}

		return deferred.promise();
	}
} );


// The deferred used on DOM ready
var readyList;

jQuery.fn.ready = function( fn ) {

	// Add the callback
	jQuery.ready.promise().done( fn );

	return this;
};

jQuery.extend( {

	// Is the DOM ready to be used? Set to true once it occurs.
	isReady: false,

	// A counter to track how many items to wait for before
	// the ready event fires. See #6781
	readyWait: 1,

	// Hold (or release) the ready event
	holdReady: function( hold ) {
		if ( hold ) {
			jQuery.readyWait++;
		} else {
			jQuery.ready( true );
		}
	},

	// Handle when the DOM is ready
	ready: function( wait ) {

		// Abort if there are pending holds or we're already ready
		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
			return;
		}

		// Remember that the DOM is ready
		jQuery.isReady = true;

		// If a normal DOM Ready event fired, decrement, and wait if need be
		if ( wait !== true && --jQuery.readyWait > 0 ) {
			return;
		}

		// If there are functions bound, to execute
		readyList.resolveWith( document, [ jQuery ] );

		// Trigger any bound ready events
		if ( jQuery.fn.triggerHandler ) {
			jQuery( document ).triggerHandler( "ready" );
			jQuery( document ).off( "ready" );
		}
	}
} );

/**
 * The ready event handler and self cleanup method
 */
function completed() {
	document.removeEventListener( "DOMContentLoaded", completed );
	window.removeEventListener( "load", completed );
	jQuery.ready();
}

jQuery.ready.promise = function( obj ) {
	if ( !readyList ) {

		readyList = jQuery.Deferred();

		// Catch cases where $(document).ready() is called
		// after the browser event has already occurred.
		// Support: IE9-10 only
		// Older IE sometimes signals "interactive" too soon
		if ( document.readyState === "complete" ||
			( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {

			// Handle it asynchronously to allow scripts the opportunity to delay ready
			window.setTimeout( jQuery.ready );

		} else {

			// Use the handy event callback
			document.addEventListener( "DOMContentLoaded", completed );

			// A fallback to window.onload, that will always work
			window.addEventListener( "load", completed );
		}
	}
	return readyList.promise( obj );
};

// Kick off the DOM ready check even if the user does not
jQuery.ready.promise();




// Multifunctional method to get and set values of a collection
// The value/s can optionally be executed if it's a function
var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
	var i = 0,
		len = elems.length,
		bulk = key == null;

	// Sets many values
	if ( jQuery.type( key ) === "object" ) {
		chainable = true;
		for ( i in key ) {
			access( elems, fn, i, key[ i ], true, emptyGet, raw );
		}

	// Sets one value
	} else if ( value !== undefined ) {
		chainable = true;

		if ( !jQuery.isFunction( value ) ) {
			raw = true;
		}

		if ( bulk ) {

			// Bulk operations run against the entire set
			if ( raw ) {
				fn.call( elems, value );
				fn = null;

			// ...except when executing function values
			} else {
				bulk = fn;
				fn = function( elem, key, value ) {
					return bulk.call( jQuery( elem ), value );
				};
			}
		}

		if ( fn ) {
			for ( ; i < len; i++ ) {
				fn(
					elems[ i ], key, raw ?
					value :
					value.call( elems[ i ], i, fn( elems[ i ], key ) )
				);
			}
		}
	}

	return chainable ?
		elems :

		// Gets
		bulk ?
			fn.call( elems ) :
			len ? fn( elems[ 0 ], key ) : emptyGet;
};
var acceptData = function( owner ) {

	// Accepts only:
	//  - Node
	//    - Node.ELEMENT_NODE
	//    - Node.DOCUMENT_NODE
	//  - Object
	//    - Any
	/* jshint -W018 */
	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
};




function Data() {
	this.expando = jQuery.expando + Data.uid++;
}

Data.uid = 1;

Data.prototype = {

	register: function( owner, initial ) {
		var value = initial || {};

		// If it is a node unlikely to be stringify-ed or looped over
		// use plain assignment
		if ( owner.nodeType ) {
			owner[ this.expando ] = value;

		// Otherwise secure it in a non-enumerable, non-writable property
		// configurability must be true to allow the property to be
		// deleted with the delete operator
		} else {
			Object.defineProperty( owner, this.expando, {
				value: value,
				writable: true,
				configurable: true
			} );
		}
		return owner[ this.expando ];
	},
	cache: function( owner ) {

		// We can accept data for non-element nodes in modern browsers,
		// but we should not, see #8335.
		// Always return an empty object.
		if ( !acceptData( owner ) ) {
			return {};
		}

		// Check if the owner object already has a cache
		var value = owner[ this.expando ];

		// If not, create one
		if ( !value ) {
			value = {};

			// We can accept data for non-element nodes in modern browsers,
			// but we should not, see #8335.
			// Always return an empty object.
			if ( acceptData( owner ) ) {

				// If it is a node unlikely to be stringify-ed or looped over
				// use plain assignment
				if ( owner.nodeType ) {
					owner[ this.expando ] = value;

				// Otherwise secure it in a non-enumerable property
				// configurable must be true to allow the property to be
				// deleted when data is removed
				} else {
					Object.defineProperty( owner, this.expando, {
						value: value,
						configurable: true
					} );
				}
			}
		}

		return value;
	},
	set: function( owner, data, value ) {
		var prop,
			cache = this.cache( owner );

		// Handle: [ owner, key, value ] args
		if ( typeof data === "string" ) {
			cache[ data ] = value;

		// Handle: [ owner, { properties } ] args
		} else {

			// Copy the properties one-by-one to the cache object
			for ( prop in data ) {
				cache[ prop ] = data[ prop ];
			}
		}
		return cache;
	},
	get: function( owner, key ) {
		return key === undefined ?
			this.cache( owner ) :
			owner[ this.expando ] && owner[ this.expando ][ key ];
	},
	access: function( owner, key, value ) {
		var stored;

		// In cases where either:
		//
		//   1. No key was specified
		//   2. A string key was specified, but no value provided
		//
		// Take the "read" path and allow the get method to determine
		// which value to return, respectively either:
		//
		//   1. The entire cache object
		//   2. The data stored at the key
		//
		if ( key === undefined ||
				( ( key && typeof key === "string" ) && value === undefined ) ) {

			stored = this.get( owner, key );

			return stored !== undefined ?
				stored : this.get( owner, jQuery.camelCase( key ) );
		}

		// When the key is not a string, or both a key and value
		// are specified, set or extend (existing objects) with either:
		//
		//   1. An object of properties
		//   2. A key and value
		//
		this.set( owner, key, value );

		// Since the "set" path can have two possible entry points
		// return the expected data based on which path was taken[*]
		return value !== undefined ? value : key;
	},
	remove: function( owner, key ) {
		var i, name, camel,
			cache = owner[ this.expando ];

		if ( cache === undefined ) {
			return;
		}

		if ( key === undefined ) {
			this.register( owner );

		} else {

			// Support array or space separated string of keys
			if ( jQuery.isArray( key ) ) {

				// If "name" is an array of keys...
				// When data is initially created, via ("key", "val") signature,
				// keys will be converted to camelCase.
				// Since there is no way to tell _how_ a key was added, remove
				// both plain key and camelCase key. #12786
				// This will only penalize the array argument path.
				name = key.concat( key.map( jQuery.camelCase ) );
			} else {
				camel = jQuery.camelCase( key );

				// Try the string as a key before any manipulation
				if ( key in cache ) {
					name = [ key, camel ];
				} else {

					// If a key with the spaces exists, use it.
					// Otherwise, create an array by matching non-whitespace
					name = camel;
					name = name in cache ?
						[ name ] : ( name.match( rnotwhite ) || [] );
				}
			}

			i = name.length;

			while ( i-- ) {
				delete cache[ name[ i ] ];
			}
		}

		// Remove the expando if there's no more data
		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {

			// Support: Chrome <= 35-45+
			// Webkit & Blink performance suffers when deleting properties
			// from DOM nodes, so set to undefined instead
			// https://code.google.com/p/chromium/issues/detail?id=378607
			if ( owner.nodeType ) {
				owner[ this.expando ] = undefined;
			} else {
				delete owner[ this.expando ];
			}
		}
	},
	hasData: function( owner ) {
		var cache = owner[ this.expando ];
		return cache !== undefined && !jQuery.isEmptyObject( cache );
	}
};
var dataPriv = new Data();

var dataUser = new Data();



//	Implementation Summary
//
//	1. Enforce API surface and semantic compatibility with 1.9.x branch
//	2. Improve the module's maintainability by reducing the storage
//		paths to a single mechanism.
//	3. Use the same single mechanism to support "private" and "user" data.
//	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
//	5. Avoid exposing implementation details on user objects (eg. expando properties)
//	6. Provide a clear path for implementation upgrade to WeakMap in 2014

var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
	rmultiDash = /[A-Z]/g;

function dataAttr( elem, key, data ) {
	var name;

	// If nothing was found internally, try to fetch any
	// data from the HTML5 data-* attribute
	if ( data === undefined && elem.nodeType === 1 ) {
		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
		data = elem.getAttribute( name );

		if ( typeof data === "string" ) {
			try {
				data = data === "true" ? true :
					data === "false" ? false :
					data === "null" ? null :

					// Only convert to a number if it doesn't change the string
					+data + "" === data ? +data :
					rbrace.test( data ) ? jQuery.parseJSON( data ) :
					data;
			} catch ( e ) {}

			// Make sure we set the data so it isn't changed later
			dataUser.set( elem, key, data );
		} else {
			data = undefined;
		}
	}
	return data;
}

jQuery.extend( {
	hasData: function( elem ) {
		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
	},

	data: function( elem, name, data ) {
		return dataUser.access( elem, name, data );
	},

	removeData: function( elem, name ) {
		dataUser.remove( elem, name );
	},

	// TODO: Now that all calls to _data and _removeData have been replaced
	// with direct calls to dataPriv methods, these can be deprecated.
	_data: function( elem, name, data ) {
		return dataPriv.access( elem, name, data );
	},

	_removeData: function( elem, name ) {
		dataPriv.remove( elem, name );
	}
} );

jQuery.fn.extend( {
	data: function( key, value ) {
		var i, name, data,
			elem = this[ 0 ],
			attrs = elem && elem.attributes;

		// Gets all values
		if ( key === undefined ) {
			if ( this.length ) {
				data = dataUser.get( elem );

				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
					i = attrs.length;
					while ( i-- ) {

						// Support: IE11+
						// The attrs elements can be null (#14894)
						if ( attrs[ i ] ) {
							name = attrs[ i ].name;
							if ( name.indexOf( "data-" ) === 0 ) {
								name = jQuery.camelCase( name.slice( 5 ) );
								dataAttr( elem, name, data[ name ] );
							}
						}
					}
					dataPriv.set( elem, "hasDataAttrs", true );
				}
			}

			return data;
		}

		// Sets multiple values
		if ( typeof key === "object" ) {
			return this.each( function() {
				dataUser.set( this, key );
			} );
		}

		return access( this, function( value ) {
			var data, camelKey;

			// The calling jQuery object (element matches) is not empty
			// (and therefore has an element appears at this[ 0 ]) and the
			// `value` parameter was not undefined. An empty jQuery object
			// will result in `undefined` for elem = this[ 0 ] which will
			// throw an exception if an attempt to read a data cache is made.
			if ( elem && value === undefined ) {

				// Attempt to get data from the cache
				// with the key as-is
				data = dataUser.get( elem, key ) ||

					// Try to find dashed key if it exists (gh-2779)
					// This is for 2.2.x only
					dataUser.get( elem, key.replace( rmultiDash, "-$&" ).toLowerCase() );

				if ( data !== undefined ) {
					return data;
				}

				camelKey = jQuery.camelCase( key );

				// Attempt to get data from the cache
				// with the key camelized
				data = dataUser.get( elem, camelKey );
				if ( data !== undefined ) {
					return data;
				}

				// Attempt to "discover" the data in
				// HTML5 custom data-* attrs
				data = dataAttr( elem, camelKey, undefined );
				if ( data !== undefined ) {
					return data;
				}

				// We tried really hard, but the data doesn't exist.
				return;
			}

			// Set the data...
			camelKey = jQuery.camelCase( key );
			this.each( function() {

				// First, attempt to store a copy or reference of any
				// data that might've been store with a camelCased key.
				var data = dataUser.get( this, camelKey );

				// For HTML5 data-* attribute interop, we have to
				// store property names with dashes in a camelCase form.
				// This might not apply to all properties...*
				dataUser.set( this, camelKey, value );

				// *... In the case of properties that might _actually_
				// have dashes, we need to also store a copy of that
				// unchanged property.
				if ( key.indexOf( "-" ) > -1 && data !== undefined ) {
					dataUser.set( this, key, value );
				}
			} );
		}, null, value, arguments.length > 1, null, true );
	},

	removeData: function( key ) {
		return this.each( function() {
			dataUser.remove( this, key );
		} );
	}
} );


jQuery.extend( {
	queue: function( elem, type, data ) {
		var queue;

		if ( elem ) {
			type = ( type || "fx" ) + "queue";
			queue = dataPriv.get( elem, type );

			// Speed up dequeue by getting out quickly if this is just a lookup
			if ( data ) {
				if ( !queue || jQuery.isArray( data ) ) {
					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
				} else {
					queue.push( data );
				}
			}
			return queue || [];
		}
	},

	dequeue: function( elem, type ) {
		type = type || "fx";

		var queue = jQuery.queue( elem, type ),
			startLength = queue.length,
			fn = queue.shift(),
			hooks = jQuery._queueHooks( elem, type ),
			next = function() {
				jQuery.dequeue( elem, type );
			};

		// If the fx queue is dequeued, always remove the progress sentinel
		if ( fn === "inprogress" ) {
			fn = queue.shift();
			startLength--;
		}

		if ( fn ) {

			// Add a progress sentinel to prevent the fx queue from being
			// automatically dequeued
			if ( type === "fx" ) {
				queue.unshift( "inprogress" );
			}

			// Clear up the last queue stop function
			delete hooks.stop;
			fn.call( elem, next, hooks );
		}

		if ( !startLength && hooks ) {
			hooks.empty.fire();
		}
	},

	// Not public - generate a queueHooks object, or return the current one
	_queueHooks: function( elem, type ) {
		var key = type + "queueHooks";
		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
			empty: jQuery.Callbacks( "once memory" ).add( function() {
				dataPriv.remove( elem, [ type + "queue", key ] );
			} )
		} );
	}
} );

jQuery.fn.extend( {
	queue: function( type, data ) {
		var setter = 2;

		if ( typeof type !== "string" ) {
			data = type;
			type = "fx";
			setter--;
		}

		if ( arguments.length < setter ) {
			return jQuery.queue( this[ 0 ], type );
		}

		return data === undefined ?
			this :
			this.each( function() {
				var queue = jQuery.queue( this, type, data );

				// Ensure a hooks for this queue
				jQuery._queueHooks( this, type );

				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
					jQuery.dequeue( this, type );
				}
			} );
	},
	dequeue: function( type ) {
		return this.each( function() {
			jQuery.dequeue( this, type );
		} );
	},
	clearQueue: function( type ) {
		return this.queue( type || "fx", [] );
	},

	// Get a promise resolved when queues of a certain type
	// are emptied (fx is the type by default)
	promise: function( type, obj ) {
		var tmp,
			count = 1,
			defer = jQuery.Deferred(),
			elements = this,
			i = this.length,
			resolve = function() {
				if ( !( --count ) ) {
					defer.resolveWith( elements, [ elements ] );
				}
			};

		if ( typeof type !== "string" ) {
			obj = type;
			type = undefined;
		}
		type = type || "fx";

		while ( i-- ) {
			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
			if ( tmp && tmp.empty ) {
				count++;
				tmp.empty.add( resolve );
			}
		}
		resolve();
		return defer.promise( obj );
	}
} );
var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;

var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );


var cssExpand = [ "Top", "Right", "Bottom", "Left" ];

var isHidden = function( elem, el ) {

		// isHidden might be called from jQuery#filter function;
		// in that case, element will be second argument
		elem = el || elem;
		return jQuery.css( elem, "display" ) === "none" ||
			!jQuery.contains( elem.ownerDocument, elem );
	};



function adjustCSS( elem, prop, valueParts, tween ) {
	var adjusted,
		scale = 1,
		maxIterations = 20,
		currentValue = tween ?
			function() { return tween.cur(); } :
			function() { return jQuery.css( elem, prop, "" ); },
		initial = currentValue(),
		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),

		// Starting value computation is required for potential unit mismatches
		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
			rcssNum.exec( jQuery.css( elem, prop ) );

	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {

		// Trust units reported by jQuery.css
		unit = unit || initialInUnit[ 3 ];

		// Make sure we update the tween properties later on
		valueParts = valueParts || [];

		// Iteratively approximate from a nonzero starting point
		initialInUnit = +initial || 1;

		do {

			// If previous iteration zeroed out, double until we get *something*.
			// Use string for doubling so we don't accidentally see scale as unchanged below
			scale = scale || ".5";

			// Adjust and apply
			initialInUnit = initialInUnit / scale;
			jQuery.style( elem, prop, initialInUnit + unit );

		// Update scale, tolerating zero or NaN from tween.cur()
		// Break the loop if scale is unchanged or perfect, or if we've just had enough.
		} while (
			scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations
		);
	}

	if ( valueParts ) {
		initialInUnit = +initialInUnit || +initial || 0;

		// Apply relative offset (+=/-=) if specified
		adjusted = valueParts[ 1 ] ?
			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
			+valueParts[ 2 ];
		if ( tween ) {
			tween.unit = unit;
			tween.start = initialInUnit;
			tween.end = adjusted;
		}
	}
	return adjusted;
}
var rcheckableType = ( /^(?:checkbox|radio)$/i );

var rtagName = ( /<([\w:-]+)/ );

var rscriptType = ( /^$|\/(?:java|ecma)script/i );



// We have to close these tags to support XHTML (#13200)
var wrapMap = {

	// Support: IE9
	option: [ 1, "<select multiple='multiple'>", "</select>" ],

	// XHTML parsers do not magically insert elements in the
	// same way that tag soup parsers do. So we cannot shorten
	// this by omitting <tbody> or other required elements.
	thead: [ 1, "<table>", "</table>" ],
	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],

	_default: [ 0, "", "" ]
};

// Support: IE9
wrapMap.optgroup = wrapMap.option;

wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;


function getAll( context, tag ) {

	// Support: IE9-11+
	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
	var ret = typeof context.getElementsByTagName !== "undefined" ?
			context.getElementsByTagName( tag || "*" ) :
			typeof context.querySelectorAll !== "undefined" ?
				context.querySelectorAll( tag || "*" ) :
			[];

	return tag === undefined || tag && jQuery.nodeName( context, tag ) ?
		jQuery.merge( [ context ], ret ) :
		ret;
}


// Mark scripts as having already been evaluated
function setGlobalEval( elems, refElements ) {
	var i = 0,
		l = elems.length;

	for ( ; i < l; i++ ) {
		dataPriv.set(
			elems[ i ],
			"globalEval",
			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
		);
	}
}


var rhtml = /<|&#?\w+;/;

function buildFragment( elems, context, scripts, selection, ignored ) {
	var elem, tmp, tag, wrap, contains, j,
		fragment = context.createDocumentFragment(),
		nodes = [],
		i = 0,
		l = elems.length;

	for ( ; i < l; i++ ) {
		elem = elems[ i ];

		if ( elem || elem === 0 ) {

			// Add nodes directly
			if ( jQuery.type( elem ) === "object" ) {

				// Support: Android<4.1, PhantomJS<2
				// push.apply(_, arraylike) throws on ancient WebKit
				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

			// Convert non-html into a text node
			} else if ( !rhtml.test( elem ) ) {
				nodes.push( context.createTextNode( elem ) );

			// Convert html into DOM nodes
			} else {
				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );

				// Deserialize a standard representation
				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
				wrap = wrapMap[ tag ] || wrapMap._default;
				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];

				// Descend through wrappers to the right content
				j = wrap[ 0 ];
				while ( j-- ) {
					tmp = tmp.lastChild;
				}

				// Support: Android<4.1, PhantomJS<2
				// push.apply(_, arraylike) throws on ancient WebKit
				jQuery.merge( nodes, tmp.childNodes );

				// Remember the top-level container
				tmp = fragment.firstChild;

				// Ensure the created nodes are orphaned (#12392)
				tmp.textContent = "";
			}
		}
	}

	// Remove wrapper from fragment
	fragment.textContent = "";

	i = 0;
	while ( ( elem = nodes[ i++ ] ) ) {

		// Skip elements already in the context collection (trac-4087)
		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
			if ( ignored ) {
				ignored.push( elem );
			}
			continue;
		}

		contains = jQuery.contains( elem.ownerDocument, elem );

		// Append to fragment
		tmp = getAll( fragment.appendChild( elem ), "script" );

		// Preserve script evaluation history
		if ( contains ) {
			setGlobalEval( tmp );
		}

		// Capture executables
		if ( scripts ) {
			j = 0;
			while ( ( elem = tmp[ j++ ] ) ) {
				if ( rscriptType.test( elem.type || "" ) ) {
					scripts.push( elem );
				}
			}
		}
	}

	return fragment;
}


( function() {
	var fragment = document.createDocumentFragment(),
		div = fragment.appendChild( document.createElement( "div" ) ),
		input = document.createElement( "input" );

	// Support: Android 4.0-4.3, Safari<=5.1
	// Check state lost if the name is set (#11217)
	// Support: Windows Web Apps (WWA)
	// `name` and `type` must use .setAttribute for WWA (#14901)
	input.setAttribute( "type", "radio" );
	input.setAttribute( "checked", "checked" );
	input.setAttribute( "name", "t" );

	div.appendChild( input );

	// Support: Safari<=5.1, Android<4.2
	// Older WebKit doesn't clone checked state correctly in fragments
	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;

	// Support: IE<=11+
	// Make sure textarea (and checkbox) defaultValue is properly cloned
	div.innerHTML = "<textarea>x</textarea>";
	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
} )();


var
	rkeyEvent = /^key/,
	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;

function returnTrue() {
	return true;
}

function returnFalse() {
	return false;
}

// Support: IE9
// See #13393 for more info
function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

function on( elem, types, selector, data, fn, one ) {
	var origFn, type;

	// Types can be a map of types/handlers
	if ( typeof types === "object" ) {

		// ( types-Object, selector, data )
		if ( typeof selector !== "string" ) {

			// ( types-Object, data )
			data = data || selector;
			selector = undefined;
		}
		for ( type in types ) {
			on( elem, type, selector, data, types[ type ], one );
		}
		return elem;
	}

	if ( data == null && fn == null ) {

		// ( types, fn )
		fn = selector;
		data = selector = undefined;
	} else if ( fn == null ) {
		if ( typeof selector === "string" ) {

			// ( types, selector, fn )
			fn = data;
			data = undefined;
		} else {

			// ( types, data, fn )
			fn = data;
			data = selector;
			selector = undefined;
		}
	}
	if ( fn === false ) {
		fn = returnFalse;
	} else if ( !fn ) {
		return elem;
	}

	if ( one === 1 ) {
		origFn = fn;
		fn = function( event ) {

			// Can use an empty set, since event contains the info
			jQuery().off( event );
			return origFn.apply( this, arguments );
		};

		// Use same guid so caller can remove using origFn
		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
	}
	return elem.each( function() {
		jQuery.event.add( this, types, fn, data, selector );
	} );
}

/*
 * Helper functions for managing events -- not part of the public interface.
 * Props to Dean Edwards' addEvent library for many of the ideas.
 */
jQuery.event = {

	global: {},

	add: function( elem, types, handler, data, selector ) {

		var handleObjIn, eventHandle, tmp,
			events, t, handleObj,
			special, handlers, type, namespaces, origType,
			elemData = dataPriv.get( elem );

		// Don't attach events to noData or text/comment nodes (but allow plain objects)
		if ( !elemData ) {
			return;
		}

		// Caller can pass in an object of custom data in lieu of the handler
		if ( handler.handler ) {
			handleObjIn = handler;
			handler = handleObjIn.handler;
			selector = handleObjIn.selector;
		}

		// Make sure that the handler has a unique ID, used to find/remove it later
		if ( !handler.guid ) {
			handler.guid = jQuery.guid++;
		}

		// Init the element's event structure and main handler, if this is the first
		if ( !( events = elemData.events ) ) {
			events = elemData.events = {};
		}
		if ( !( eventHandle = elemData.handle ) ) {
			eventHandle = elemData.handle = function( e ) {

				// Discard the second event of a jQuery.event.trigger() and
				// when an event is called after a page has unloaded
				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
			};
		}

		// Handle multiple events separated by a space
		types = ( types || "" ).match( rnotwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// There *must* be a type, no attaching namespace-only handlers
			if ( !type ) {
				continue;
			}

			// If event changes its type, use the special event handlers for the changed type
			special = jQuery.event.special[ type ] || {};

			// If selector defined, determine special event api type, otherwise given type
			type = ( selector ? special.delegateType : special.bindType ) || type;

			// Update special based on newly reset type
			special = jQuery.event.special[ type ] || {};

			// handleObj is passed to all event handlers
			handleObj = jQuery.extend( {
				type: type,
				origType: origType,
				data: data,
				handler: handler,
				guid: handler.guid,
				selector: selector,
				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
				namespace: namespaces.join( "." )
			}, handleObjIn );

			// Init the event handler queue if we're the first
			if ( !( handlers = events[ type ] ) ) {
				handlers = events[ type ] = [];
				handlers.delegateCount = 0;

				// Only use addEventListener if the special events handler returns false
				if ( !special.setup ||
					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {

					if ( elem.addEventListener ) {
						elem.addEventListener( type, eventHandle );
					}
				}
			}

			if ( special.add ) {
				special.add.call( elem, handleObj );

				if ( !handleObj.handler.guid ) {
					handleObj.handler.guid = handler.guid;
				}
			}

			// Add to the element's handler list, delegates in front
			if ( selector ) {
				handlers.splice( handlers.delegateCount++, 0, handleObj );
			} else {
				handlers.push( handleObj );
			}

			// Keep track of which events have ever been used, for event optimization
			jQuery.event.global[ type ] = true;
		}

	},

	// Detach an event or set of events from an element
	remove: function( elem, types, handler, selector, mappedTypes ) {

		var j, origCount, tmp,
			events, t, handleObj,
			special, handlers, type, namespaces, origType,
			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );

		if ( !elemData || !( events = elemData.events ) ) {
			return;
		}

		// Once for each type.namespace in types; type may be omitted
		types = ( types || "" ).match( rnotwhite ) || [ "" ];
		t = types.length;
		while ( t-- ) {
			tmp = rtypenamespace.exec( types[ t ] ) || [];
			type = origType = tmp[ 1 ];
			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();

			// Unbind all events (on this namespace, if provided) for the element
			if ( !type ) {
				for ( type in events ) {
					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
				}
				continue;
			}

			special = jQuery.event.special[ type ] || {};
			type = ( selector ? special.delegateType : special.bindType ) || type;
			handlers = events[ type ] || [];
			tmp = tmp[ 2 ] &&
				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );

			// Remove matching events
			origCount = j = handlers.length;
			while ( j-- ) {
				handleObj = handlers[ j ];

				if ( ( mappedTypes || origType === handleObj.origType ) &&
					( !handler || handler.guid === handleObj.guid ) &&
					( !tmp || tmp.test( handleObj.namespace ) ) &&
					( !selector || selector === handleObj.selector ||
						selector === "**" && handleObj.selector ) ) {
					handlers.splice( j, 1 );

					if ( handleObj.selector ) {
						handlers.delegateCount--;
					}
					if ( special.remove ) {
						special.remove.call( elem, handleObj );
					}
				}
			}

			// Remove generic event handler if we removed something and no more handlers exist
			// (avoids potential for endless recursion during removal of special event handlers)
			if ( origCount && !handlers.length ) {
				if ( !special.teardown ||
					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {

					jQuery.removeEvent( elem, type, elemData.handle );
				}

				delete events[ type ];
			}
		}

		// Remove data and the expando if it's no longer used
		if ( jQuery.isEmptyObject( events ) ) {
			dataPriv.remove( elem, "handle events" );
		}
	},

	dispatch: function( event ) {

		// Make a writable jQuery.Event from the native event object
		event = jQuery.event.fix( event );

		var i, j, ret, matched, handleObj,
			handlerQueue = [],
			args = slice.call( arguments ),
			handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
			special = jQuery.event.special[ event.type ] || {};

		// Use the fix-ed jQuery.Event rather than the (read-only) native event
		args[ 0 ] = event;
		event.delegateTarget = this;

		// Call the preDispatch hook for the mapped type, and let it bail if desired
		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
			return;
		}

		// Determine handlers
		handlerQueue = jQuery.event.handlers.call( this, event, handlers );

		// Run delegates first; they may want to stop propagation beneath us
		i = 0;
		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
			event.currentTarget = matched.elem;

			j = 0;
			while ( ( handleObj = matched.handlers[ j++ ] ) &&
				!event.isImmediatePropagationStopped() ) {

				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
				// a subset or equal to those in the bound event (both can have no namespace).
				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {

					event.handleObj = handleObj;
					event.data = handleObj.data;

					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
						handleObj.handler ).apply( matched.elem, args );

					if ( ret !== undefined ) {
						if ( ( event.result = ret ) === false ) {
							event.preventDefault();
							event.stopPropagation();
						}
					}
				}
			}
		}

		// Call the postDispatch hook for the mapped type
		if ( special.postDispatch ) {
			special.postDispatch.call( this, event );
		}

		return event.result;
	},

	handlers: function( event, handlers ) {
		var i, matches, sel, handleObj,
			handlerQueue = [],
			delegateCount = handlers.delegateCount,
			cur = event.target;

		// Support (at least): Chrome, IE9
		// Find delegate handlers
		// Black-hole SVG <use> instance trees (#13180)
		//
		// Support: Firefox<=42+
		// Avoid non-left-click in FF but don't block IE radio events (#3861, gh-2343)
		if ( delegateCount && cur.nodeType &&
			( event.type !== "click" || isNaN( event.button ) || event.button < 1 ) ) {

			for ( ; cur !== this; cur = cur.parentNode || this ) {

				// Don't check non-elements (#13208)
				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
				if ( cur.nodeType === 1 && ( cur.disabled !== true || event.type !== "click" ) ) {
					matches = [];
					for ( i = 0; i < delegateCount; i++ ) {
						handleObj = handlers[ i ];

						// Don't conflict with Object.prototype properties (#13203)
						sel = handleObj.selector + " ";

						if ( matches[ sel ] === undefined ) {
							matches[ sel ] = handleObj.needsContext ?
								jQuery( sel, this ).index( cur ) > -1 :
								jQuery.find( sel, this, null, [ cur ] ).length;
						}
						if ( matches[ sel ] ) {
							matches.push( handleObj );
						}
					}
					if ( matches.length ) {
						handlerQueue.push( { elem: cur, handlers: matches } );
					}
				}
			}
		}

		// Add the remaining (directly-bound) handlers
		if ( delegateCount < handlers.length ) {
			handlerQueue.push( { elem: this, handlers: handlers.slice( delegateCount ) } );
		}

		return handlerQueue;
	},

	// Includes some event props shared by KeyEvent and MouseEvent
	props: ( "altKey bubbles cancelable ctrlKey currentTarget detail eventPhase " +
		"metaKey relatedTarget shiftKey target timeStamp view which" ).split( " " ),

	fixHooks: {},

	keyHooks: {
		props: "char charCode key keyCode".split( " " ),
		filter: function( event, original ) {

			// Add which for key events
			if ( event.which == null ) {
				event.which = original.charCode != null ? original.charCode : original.keyCode;
			}

			return event;
		}
	},

	mouseHooks: {
		props: ( "button buttons clientX clientY offsetX offsetY pageX pageY " +
			"screenX screenY toElement" ).split( " " ),
		filter: function( event, original ) {
			var eventDoc, doc, body,
				button = original.button;

			// Calculate pageX/Y if missing and clientX/Y available
			if ( event.pageX == null && original.clientX != null ) {
				eventDoc = event.target.ownerDocument || document;
				doc = eventDoc.documentElement;
				body = eventDoc.body;

				event.pageX = original.clientX +
					( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) -
					( doc && doc.clientLeft || body && body.clientLeft || 0 );
				event.pageY = original.clientY +
					( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) -
					( doc && doc.clientTop  || body && body.clientTop  || 0 );
			}

			// Add which for click: 1 === left; 2 === middle; 3 === right
			// Note: button is not normalized, so don't use it
			if ( !event.which && button !== undefined ) {
				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
			}

			return event;
		}
	},

	fix: function( event ) {
		if ( event[ jQuery.expando ] ) {
			return event;
		}

		// Create a writable copy of the event object and normalize some properties
		var i, prop, copy,
			type = event.type,
			originalEvent = event,
			fixHook = this.fixHooks[ type ];

		if ( !fixHook ) {
			this.fixHooks[ type ] = fixHook =
				rmouseEvent.test( type ) ? this.mouseHooks :
				rkeyEvent.test( type ) ? this.keyHooks :
				{};
		}
		copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;

		event = new jQuery.Event( originalEvent );

		i = copy.length;
		while ( i-- ) {
			prop = copy[ i ];
			event[ prop ] = originalEvent[ prop ];
		}

		// Support: Cordova 2.5 (WebKit) (#13255)
		// All events should have a target; Cordova deviceready doesn't
		if ( !event.target ) {
			event.target = document;
		}

		// Support: Safari 6.0+, Chrome<28
		// Target should not be a text node (#504, #13143)
		if ( event.target.nodeType === 3 ) {
			event.target = event.target.parentNode;
		}

		return fixHook.filter ? fixHook.filter( event, originalEvent ) : event;
	},

	special: {
		load: {

			// Prevent triggered image.load events from bubbling to window.load
			noBubble: true
		},
		focus: {

			// Fire native event if possible so blur/focus sequence is correct
			trigger: function() {
				if ( this !== safeActiveElement() && this.focus ) {
					this.focus();
					return false;
				}
			},
			delegateType: "focusin"
		},
		blur: {
			trigger: function() {
				if ( this === safeActiveElement() && this.blur ) {
					this.blur();
					return false;
				}
			},
			delegateType: "focusout"
		},
		click: {

			// For checkbox, fire native event so checked state will be right
			trigger: function() {
				if ( this.type === "checkbox" && this.click && jQuery.nodeName( this, "input" ) ) {
					this.click();
					return false;
				}
			},

			// For cross-browser consistency, don't fire native .click() on links
			_default: function( event ) {
				return jQuery.nodeName( event.target, "a" );
			}
		},

		beforeunload: {
			postDispatch: function( event ) {

				// Support: Firefox 20+
				// Firefox doesn't alert if the returnValue field is not set.
				if ( event.result !== undefined && event.originalEvent ) {
					event.originalEvent.returnValue = event.result;
				}
			}
		}
	}
};

jQuery.removeEvent = function( elem, type, handle ) {

	// This "if" is needed for plain objects
	if ( elem.removeEventListener ) {
		elem.removeEventListener( type, handle );
	}
};

jQuery.Event = function( src, props ) {

	// Allow instantiation without the 'new' keyword
	if ( !( this instanceof jQuery.Event ) ) {
		return new jQuery.Event( src, props );
	}

	// Event object
	if ( src && src.type ) {
		this.originalEvent = src;
		this.type = src.type;

		// Events bubbling up the document may have been marked as prevented
		// by a handler lower down the tree; reflect the correct value.
		this.isDefaultPrevented = src.defaultPrevented ||
				src.defaultPrevented === undefined &&

				// Support: Android<4.0
				src.returnValue === false ?
			returnTrue :
			returnFalse;

	// Event type
	} else {
		this.type = src;
	}

	// Put explicitly provided properties onto the event object
	if ( props ) {
		jQuery.extend( this, props );
	}

	// Create a timestamp if incoming event doesn't have one
	this.timeStamp = src && src.timeStamp || jQuery.now();

	// Mark it as fixed
	this[ jQuery.expando ] = true;
};

// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
	constructor: jQuery.Event,
	isDefaultPrevented: returnFalse,
	isPropagationStopped: returnFalse,
	isImmediatePropagationStopped: returnFalse,
	isSimulated: false,

	preventDefault: function() {
		var e = this.originalEvent;

		this.isDefaultPrevented = returnTrue;

		if ( e && !this.isSimulated ) {
			e.preventDefault();
		}
	},
	stopPropagation: function() {
		var e = this.originalEvent;

		this.isPropagationStopped = returnTrue;

		if ( e && !this.isSimulated ) {
			e.stopPropagation();
		}
	},
	stopImmediatePropagation: function() {
		var e = this.originalEvent;

		this.isImmediatePropagationStopped = returnTrue;

		if ( e && !this.isSimulated ) {
			e.stopImmediatePropagation();
		}

		this.stopPropagation();
	}
};

// Create mouseenter/leave events using mouseover/out and event-time checks
// so that event delegation works in jQuery.
// Do the same for pointerenter/pointerleave and pointerover/pointerout
//
// Support: Safari 7 only
// Safari sends mouseenter too often; see:
// https://code.google.com/p/chromium/issues/detail?id=470258
// for the description of the bug (it existed in older Chrome versions as well).
jQuery.each( {
	mouseenter: "mouseover",
	mouseleave: "mouseout",
	pointerenter: "pointerover",
	pointerleave: "pointerout"
}, function( orig, fix ) {
	jQuery.event.special[ orig ] = {
		delegateType: fix,
		bindType: fix,

		handle: function( event ) {
			var ret,
				target = this,
				related = event.relatedTarget,
				handleObj = event.handleObj;

			// For mouseenter/leave call the handler if related is outside the target.
			// NB: No relatedTarget if the mouse left/entered the browser window
			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
				event.type = handleObj.origType;
				ret = handleObj.handler.apply( this, arguments );
				event.type = fix;
			}
			return ret;
		}
	};
} );

jQuery.fn.extend( {
	on: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn );
	},
	one: function( types, selector, data, fn ) {
		return on( this, types, selector, data, fn, 1 );
	},
	off: function( types, selector, fn ) {
		var handleObj, type;
		if ( types && types.preventDefault && types.handleObj ) {

			// ( event )  dispatched jQuery.Event
			handleObj = types.handleObj;
			jQuery( types.delegateTarget ).off(
				handleObj.namespace ?
					handleObj.origType + "." + handleObj.namespace :
					handleObj.origType,
				handleObj.selector,
				handleObj.handler
			);
			return this;
		}
		if ( typeof types === "object" ) {

			// ( types-object [, selector] )
			for ( type in types ) {
				this.off( type, selector, types[ type ] );
			}
			return this;
		}
		if ( selector === false || typeof selector === "function" ) {

			// ( types [, fn] )
			fn = selector;
			selector = undefined;
		}
		if ( fn === false ) {
			fn = returnFalse;
		}
		return this.each( function() {
			jQuery.event.remove( this, types, fn, selector );
		} );
	}
} );


var
	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:-]+)[^>]*)\/>/gi,

	// Support: IE 10-11, Edge 10240+
	// In IE/Edge using regex groups here causes severe slowdowns.
	// See https://connect.microsoft.com/IE/feedback/details/1736512/
	rnoInnerhtml = /<script|<style|<link/i,

	// checked="checked" or checked
	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
	rscriptTypeMasked = /^true\/(.*)/,
	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;

// Manipulating tables requires a tbody
function manipulationTarget( elem, content ) {
	return jQuery.nodeName( elem, "table" ) &&
		jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ?

		elem.getElementsByTagName( "tbody" )[ 0 ] ||
			elem.appendChild( elem.ownerDocument.createElement( "tbody" ) ) :
		elem;
}

// Replace/restore the type attribute of script elements for safe DOM manipulation
function disableScript( elem ) {
	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
	return elem;
}
function restoreScript( elem ) {
	var match = rscriptTypeMasked.exec( elem.type );

	if ( match ) {
		elem.type = match[ 1 ];
	} else {
		elem.removeAttribute( "type" );
	}

	return elem;
}

function cloneCopyEvent( src, dest ) {
	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;

	if ( dest.nodeType !== 1 ) {
		return;
	}

	// 1. Copy private data: events, handlers, etc.
	if ( dataPriv.hasData( src ) ) {
		pdataOld = dataPriv.access( src );
		pdataCur = dataPriv.set( dest, pdataOld );
		events = pdataOld.events;

		if ( events ) {
			delete pdataCur.handle;
			pdataCur.events = {};

			for ( type in events ) {
				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
					jQuery.event.add( dest, type, events[ type ][ i ] );
				}
			}
		}
	}

	// 2. Copy user data
	if ( dataUser.hasData( src ) ) {
		udataOld = dataUser.access( src );
		udataCur = jQuery.extend( {}, udataOld );

		dataUser.set( dest, udataCur );
	}
}

// Fix IE bugs, see support tests
function fixInput( src, dest ) {
	var nodeName = dest.nodeName.toLowerCase();

	// Fails to persist the checked state of a cloned checkbox or radio button.
	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
		dest.checked = src.checked;

	// Fails to return the selected option to the default selected state when cloning options
	} else if ( nodeName === "input" || nodeName === "textarea" ) {
		dest.defaultValue = src.defaultValue;
	}
}

function domManip( collection, args, callback, ignored ) {

	// Flatten any nested arrays
	args = concat.apply( [], args );

	var fragment, first, scripts, hasScripts, node, doc,
		i = 0,
		l = collection.length,
		iNoClone = l - 1,
		value = args[ 0 ],
		isFunction = jQuery.isFunction( value );

	// We can't cloneNode fragments that contain checked, in WebKit
	if ( isFunction ||
			( l > 1 && typeof value === "string" &&
				!support.checkClone && rchecked.test( value ) ) ) {
		return collection.each( function( index ) {
			var self = collection.eq( index );
			if ( isFunction ) {
				args[ 0 ] = value.call( this, index, self.html() );
			}
			domManip( self, args, callback, ignored );
		} );
	}

	if ( l ) {
		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
		first = fragment.firstChild;

		if ( fragment.childNodes.length === 1 ) {
			fragment = first;
		}

		// Require either new content or an interest in ignored elements to invoke the callback
		if ( first || ignored ) {
			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
			hasScripts = scripts.length;

			// Use the original fragment for the last item
			// instead of the first because it can end up
			// being emptied incorrectly in certain situations (#8070).
			for ( ; i < l; i++ ) {
				node = fragment;

				if ( i !== iNoClone ) {
					node = jQuery.clone( node, true, true );

					// Keep references to cloned scripts for later restoration
					if ( hasScripts ) {

						// Support: Android<4.1, PhantomJS<2
						// push.apply(_, arraylike) throws on ancient WebKit
						jQuery.merge( scripts, getAll( node, "script" ) );
					}
				}

				callback.call( collection[ i ], node, i );
			}

			if ( hasScripts ) {
				doc = scripts[ scripts.length - 1 ].ownerDocument;

				// Reenable scripts
				jQuery.map( scripts, restoreScript );

				// Evaluate executable scripts on first document insertion
				for ( i = 0; i < hasScripts; i++ ) {
					node = scripts[ i ];
					if ( rscriptType.test( node.type || "" ) &&
						!dataPriv.access( node, "globalEval" ) &&
						jQuery.contains( doc, node ) ) {

						if ( node.src ) {

							// Optional AJAX dependency, but won't run scripts if not present
							if ( jQuery._evalUrl ) {
								jQuery._evalUrl( node.src );
							}
						} else {
							jQuery.globalEval( node.textContent.replace( rcleanScript, "" ) );
						}
					}
				}
			}
		}
	}

	return collection;
}

function remove( elem, selector, keepData ) {
	var node,
		nodes = selector ? jQuery.filter( selector, elem ) : elem,
		i = 0;

	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
		if ( !keepData && node.nodeType === 1 ) {
			jQuery.cleanData( getAll( node ) );
		}

		if ( node.parentNode ) {
			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
				setGlobalEval( getAll( node, "script" ) );
			}
			node.parentNode.removeChild( node );
		}
	}

	return elem;
}

jQuery.extend( {
	htmlPrefilter: function( html ) {
		return html.replace( rxhtmlTag, "<$1></$2>" );
	},

	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
		var i, l, srcElements, destElements,
			clone = elem.cloneNode( true ),
			inPage = jQuery.contains( elem.ownerDocument, elem );

		// Fix IE cloning issues
		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
				!jQuery.isXMLDoc( elem ) ) {

			// We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
			destElements = getAll( clone );
			srcElements = getAll( elem );

			for ( i = 0, l = srcElements.length; i < l; i++ ) {
				fixInput( srcElements[ i ], destElements[ i ] );
			}
		}

		// Copy the events from the original to the clone
		if ( dataAndEvents ) {
			if ( deepDataAndEvents ) {
				srcElements = srcElements || getAll( elem );
				destElements = destElements || getAll( clone );

				for ( i = 0, l = srcElements.length; i < l; i++ ) {
					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
				}
			} else {
				cloneCopyEvent( elem, clone );
			}
		}

		// Preserve script evaluation history
		destElements = getAll( clone, "script" );
		if ( destElements.length > 0 ) {
			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
		}

		// Return the cloned set
		return clone;
	},

	cleanData: function( elems ) {
		var data, elem, type,
			special = jQuery.event.special,
			i = 0;

		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
			if ( acceptData( elem ) ) {
				if ( ( data = elem[ dataPriv.expando ] ) ) {
					if ( data.events ) {
						for ( type in data.events ) {
							if ( special[ type ] ) {
								jQuery.event.remove( elem, type );

							// This is a shortcut to avoid jQuery.event.remove's overhead
							} else {
								jQuery.removeEvent( elem, type, data.handle );
							}
						}
					}

					// Support: Chrome <= 35-45+
					// Assign undefined instead of using delete, see Data#remove
					elem[ dataPriv.expando ] = undefined;
				}
				if ( elem[ dataUser.expando ] ) {

					// Support: Chrome <= 35-45+
					// Assign undefined instead of using delete, see Data#remove
					elem[ dataUser.expando ] = undefined;
				}
			}
		}
	}
} );

jQuery.fn.extend( {

	// Keep domManip exposed until 3.0 (gh-2225)
	domManip: domManip,

	detach: function( selector ) {
		return remove( this, selector, true );
	},

	remove: function( selector ) {
		return remove( this, selector );
	},

	text: function( value ) {
		return access( this, function( value ) {
			return value === undefined ?
				jQuery.text( this ) :
				this.empty().each( function() {
					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
						this.textContent = value;
					}
				} );
		}, null, value, arguments.length );
	},

	append: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.appendChild( elem );
			}
		} );
	},

	prepend: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
				var target = manipulationTarget( this, elem );
				target.insertBefore( elem, target.firstChild );
			}
		} );
	},

	before: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this );
			}
		} );
	},

	after: function() {
		return domManip( this, arguments, function( elem ) {
			if ( this.parentNode ) {
				this.parentNode.insertBefore( elem, this.nextSibling );
			}
		} );
	},

	empty: function() {
		var elem,
			i = 0;

		for ( ; ( elem = this[ i ] ) != null; i++ ) {
			if ( elem.nodeType === 1 ) {

				// Prevent memory leaks
				jQuery.cleanData( getAll( elem, false ) );

				// Remove any remaining nodes
				elem.textContent = "";
			}
		}

		return this;
	},

	clone: function( dataAndEvents, deepDataAndEvents ) {
		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;

		return this.map( function() {
			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
		} );
	},

	html: function( value ) {
		return access( this, function( value ) {
			var elem = this[ 0 ] || {},
				i = 0,
				l = this.length;

			if ( value === undefined && elem.nodeType === 1 ) {
				return elem.innerHTML;
			}

			// See if we can take a shortcut and just use innerHTML
			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {

				value = jQuery.htmlPrefilter( value );

				try {
					for ( ; i < l; i++ ) {
						elem = this[ i ] || {};

						// Remove element nodes and prevent memory leaks
						if ( elem.nodeType === 1 ) {
							jQuery.cleanData( getAll( elem, false ) );
							elem.innerHTML = value;
						}
					}

					elem = 0;

				// If using innerHTML throws an exception, use the fallback method
				} catch ( e ) {}
			}

			if ( elem ) {
				this.empty().append( value );
			}
		}, null, value, arguments.length );
	},

	replaceWith: function() {
		var ignored = [];

		// Make the changes, replacing each non-ignored context element with the new content
		return domManip( this, arguments, function( elem ) {
			var parent = this.parentNode;

			if ( jQuery.inArray( this, ignored ) < 0 ) {
				jQuery.cleanData( getAll( this ) );
				if ( parent ) {
					parent.replaceChild( elem, this );
				}
			}

		// Force callback invocation
		}, ignored );
	}
} );

jQuery.each( {
	appendTo: "append",
	prependTo: "prepend",
	insertBefore: "before",
	insertAfter: "after",
	replaceAll: "replaceWith"
}, function( name, original ) {
	jQuery.fn[ name ] = function( selector ) {
		var elems,
			ret = [],
			insert = jQuery( selector ),
			last = insert.length - 1,
			i = 0;

		for ( ; i <= last; i++ ) {
			elems = i === last ? this : this.clone( true );
			jQuery( insert[ i ] )[ original ]( elems );

			// Support: QtWebKit
			// .get() because push.apply(_, arraylike) throws
			push.apply( ret, elems.get() );
		}

		return this.pushStack( ret );
	};
} );


var iframe,
	elemdisplay = {

		// Support: Firefox
		// We have to pre-define these values for FF (#10227)
		HTML: "block",
		BODY: "block"
	};

/**
 * Retrieve the actual display of a element
 * @param {String} name nodeName of the element
 * @param {Object} doc Document object
 */

// Called only from within defaultDisplay
function actualDisplay( name, doc ) {
	var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),

		display = jQuery.css( elem[ 0 ], "display" );

	// We don't have any data stored on the element,
	// so use "detach" method as fast way to get rid of the element
	elem.detach();

	return display;
}

/**
 * Try to determine the default display value of an element
 * @param {String} nodeName
 */
function defaultDisplay( nodeName ) {
	var doc = document,
		display = elemdisplay[ nodeName ];

	if ( !display ) {
		display = actualDisplay( nodeName, doc );

		// If the simple way fails, read from inside an iframe
		if ( display === "none" || !display ) {

			// Use the already-created iframe if possible
			iframe = ( iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" ) )
				.appendTo( doc.documentElement );

			// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
			doc = iframe[ 0 ].contentDocument;

			// Support: IE
			doc.write();
			doc.close();

			display = actualDisplay( nodeName, doc );
			iframe.detach();
		}

		// Store the correct default display
		elemdisplay[ nodeName ] = display;
	}

	return display;
}
var rmargin = ( /^margin/ );

var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );

var getStyles = function( elem ) {

		// Support: IE<=11+, Firefox<=30+ (#15098, #14150)
		// IE throws on elements created in popups
		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
		var view = elem.ownerDocument.defaultView;

		if ( !view || !view.opener ) {
			view = window;
		}

		return view.getComputedStyle( elem );
	};

var swap = function( elem, options, callback, args ) {
	var ret, name,
		old = {};

	// Remember the old values, and insert the new ones
	for ( name in options ) {
		old[ name ] = elem.style[ name ];
		elem.style[ name ] = options[ name ];
	}

	ret = callback.apply( elem, args || [] );

	// Revert the old values
	for ( name in options ) {
		elem.style[ name ] = old[ name ];
	}

	return ret;
};


var documentElement = document.documentElement;



( function() {
	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
		container = document.createElement( "div" ),
		div = document.createElement( "div" );

	// Finish early in limited (non-browser) environments
	if ( !div.style ) {
		return;
	}

	// Support: IE9-11+
	// Style of cloned element affects source element cloned (#8908)
	div.style.backgroundClip = "content-box";
	div.cloneNode( true ).style.backgroundClip = "";
	support.clearCloneStyle = div.style.backgroundClip === "content-box";

	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
		"padding:0;margin-top:1px;position:absolute";
	container.appendChild( div );

	// Executing both pixelPosition & boxSizingReliable tests require only one layout
	// so they're executed at the same time to save the second computation.
	function computeStyleTests() {
		div.style.cssText =

			// Support: Firefox<29, Android 2.3
			// Vendor-prefix box-sizing
			"-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;" +
			"position:relative;display:block;" +
			"margin:auto;border:1px;padding:1px;" +
			"top:1%;width:50%";
		div.innerHTML = "";
		documentElement.appendChild( container );

		var divStyle = window.getComputedStyle( div );
		pixelPositionVal = divStyle.top !== "1%";
		reliableMarginLeftVal = divStyle.marginLeft === "2px";
		boxSizingReliableVal = divStyle.width === "4px";

		// Support: Android 4.0 - 4.3 only
		// Some styles come back with percentage values, even though they shouldn't
		div.style.marginRight = "50%";
		pixelMarginRightVal = divStyle.marginRight === "4px";

		documentElement.removeChild( container );
	}

	jQuery.extend( support, {
		pixelPosition: function() {

			// This test is executed only once but we still do memoizing
			// since we can use the boxSizingReliable pre-computing.
			// No need to check if the test was already performed, though.
			computeStyleTests();
			return pixelPositionVal;
		},
		boxSizingReliable: function() {
			if ( boxSizingReliableVal == null ) {
				computeStyleTests();
			}
			return boxSizingReliableVal;
		},
		pixelMarginRight: function() {

			// Support: Android 4.0-4.3
			// We're checking for boxSizingReliableVal here instead of pixelMarginRightVal
			// since that compresses better and they're computed together anyway.
			if ( boxSizingReliableVal == null ) {
				computeStyleTests();
			}
			return pixelMarginRightVal;
		},
		reliableMarginLeft: function() {

			// Support: IE <=8 only, Android 4.0 - 4.3 only, Firefox <=3 - 37
			if ( boxSizingReliableVal == null ) {
				computeStyleTests();
			}
			return reliableMarginLeftVal;
		},
		reliableMarginRight: function() {

			// Support: Android 2.3
			// Check if div with explicit width and no margin-right incorrectly
			// gets computed margin-right based on width of container. (#3333)
			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
			// This support function is only executed once so no memoizing is needed.
			var ret,
				marginDiv = div.appendChild( document.createElement( "div" ) );

			// Reset CSS: box-sizing; display; margin; border; padding
			marginDiv.style.cssText = div.style.cssText =

				// Support: Android 2.3
				// Vendor-prefix box-sizing
				"-webkit-box-sizing:content-box;box-sizing:content-box;" +
				"display:block;margin:0;border:0;padding:0";
			marginDiv.style.marginRight = marginDiv.style.width = "0";
			div.style.width = "1px";
			documentElement.appendChild( container );

			ret = !parseFloat( window.getComputedStyle( marginDiv ).marginRight );

			documentElement.removeChild( container );
			div.removeChild( marginDiv );

			return ret;
		}
	} );
} )();


function curCSS( elem, name, computed ) {
	var width, minWidth, maxWidth, ret,
		style = elem.style;

	computed = computed || getStyles( elem );
	ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined;

	// Support: Opera 12.1x only
	// Fall back to style even without computed
	// computed is undefined for elems on document fragments
	if ( ( ret === "" || ret === undefined ) && !jQuery.contains( elem.ownerDocument, elem ) ) {
		ret = jQuery.style( elem, name );
	}

	// Support: IE9
	// getPropertyValue is only needed for .css('filter') (#12537)
	if ( computed ) {

		// A tribute to the "awesome hack by Dean Edwards"
		// Android Browser returns percentage for some values,
		// but width seems to be reliably pixels.
		// This is against the CSSOM draft spec:
		// http://dev.w3.org/csswg/cssom/#resolved-values
		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {

			// Remember the original values
			width = style.width;
			minWidth = style.minWidth;
			maxWidth = style.maxWidth;

			// Put in the new values to get a computed value out
			style.minWidth = style.maxWidth = style.width = ret;
			ret = computed.width;

			// Revert the changed values
			style.width = width;
			style.minWidth = minWidth;
			style.maxWidth = maxWidth;
		}
	}

	return ret !== undefined ?

		// Support: IE9-11+
		// IE returns zIndex value as an integer.
		ret + "" :
		ret;
}


function addGetHookIf( conditionFn, hookFn ) {

	// Define the hook, we'll check on the first run if it's really needed.
	return {
		get: function() {
			if ( conditionFn() ) {

				// Hook not needed (or it's not possible to use it due
				// to missing dependency), remove it.
				delete this.get;
				return;
			}

			// Hook needed; redefine it so that the support test is not executed again.
			return ( this.get = hookFn ).apply( this, arguments );
		}
	};
}


var

	// Swappable if display is none or starts with table
	// except "table", "table-cell", or "table-caption"
	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
	rdisplayswap = /^(none|table(?!-c[ea]).+)/,

	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
	cssNormalTransform = {
		letterSpacing: "0",
		fontWeight: "400"
	},

	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
	emptyStyle = document.createElement( "div" ).style;

// Return a css property mapped to a potentially vendor prefixed property
function vendorPropName( name ) {

	// Shortcut for names that are not vendor prefixed
	if ( name in emptyStyle ) {
		return name;
	}

	// Check for vendor prefixed names
	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
		i = cssPrefixes.length;

	while ( i-- ) {
		name = cssPrefixes[ i ] + capName;
		if ( name in emptyStyle ) {
			return name;
		}
	}
}

function setPositiveNumber( elem, value, subtract ) {

	// Any relative (+/-) values have already been
	// normalized at this point
	var matches = rcssNum.exec( value );
	return matches ?

		// Guard against undefined "subtract", e.g., when used as in cssHooks
		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
		value;
}

function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
	var i = extra === ( isBorderBox ? "border" : "content" ) ?

		// If we already have the right measurement, avoid augmentation
		4 :

		// Otherwise initialize for horizontal or vertical properties
		name === "width" ? 1 : 0,

		val = 0;

	for ( ; i < 4; i += 2 ) {

		// Both box models exclude margin, so add it if we want it
		if ( extra === "margin" ) {
			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
		}

		if ( isBorderBox ) {

			// border-box includes padding, so remove it if we want content
			if ( extra === "content" ) {
				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
			}

			// At this point, extra isn't border nor margin, so remove border
			if ( extra !== "margin" ) {
				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		} else {

			// At this point, extra isn't content, so add padding
			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );

			// At this point, extra isn't content nor padding, so add border
			if ( extra !== "padding" ) {
				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
			}
		}
	}

	return val;
}

function getWidthOrHeight( elem, name, extra ) {

	// Start with offset property, which is equivalent to the border-box value
	var valueIsBorderBox = true,
		val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
		styles = getStyles( elem ),
		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";

	// Some non-html elements return undefined for offsetWidth, so check for null/undefined
	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
	if ( val <= 0 || val == null ) {

		// Fall back to computed then uncomputed css if necessary
		val = curCSS( elem, name, styles );
		if ( val < 0 || val == null ) {
			val = elem.style[ name ];
		}

		// Computed unit is not pixels. Stop here and return.
		if ( rnumnonpx.test( val ) ) {
			return val;
		}

		// Check for style in case a browser which returns unreliable values
		// for getComputedStyle silently falls back to the reliable elem.style
		valueIsBorderBox = isBorderBox &&
			( support.boxSizingReliable() || val === elem.style[ name ] );

		// Normalize "", auto, and prepare for extra
		val = parseFloat( val ) || 0;
	}

	// Use the active box-sizing model to add/subtract irrelevant styles
	return ( val +
		augmentWidthOrHeight(
			elem,
			name,
			extra || ( isBorderBox ? "border" : "content" ),
			valueIsBorderBox,
			styles
		)
	) + "px";
}

function showHide( elements, show ) {
	var display, elem, hidden,
		values = [],
		index = 0,
		length = elements.length;

	for ( ; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}

		values[ index ] = dataPriv.get( elem, "olddisplay" );
		display = elem.style.display;
		if ( show ) {

			// Reset the inline display of this element to learn if it is
			// being hidden by cascaded rules or not
			if ( !values[ index ] && display === "none" ) {
				elem.style.display = "";
			}

			// Set elements which have been overridden with display: none
			// in a stylesheet to whatever the default browser style is
			// for such an element
			if ( elem.style.display === "" && isHidden( elem ) ) {
				values[ index ] = dataPriv.access(
					elem,
					"olddisplay",
					defaultDisplay( elem.nodeName )
				);
			}
		} else {
			hidden = isHidden( elem );

			if ( display !== "none" || !hidden ) {
				dataPriv.set(
					elem,
					"olddisplay",
					hidden ? display : jQuery.css( elem, "display" )
				);
			}
		}
	}

	// Set the display of most of the elements in a second loop
	// to avoid the constant reflow
	for ( index = 0; index < length; index++ ) {
		elem = elements[ index ];
		if ( !elem.style ) {
			continue;
		}
		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
			elem.style.display = show ? values[ index ] || "" : "none";
		}
	}

	return elements;
}

jQuery.extend( {

	// Add in style property hooks for overriding the default
	// behavior of getting and setting a style property
	cssHooks: {
		opacity: {
			get: function( elem, computed ) {
				if ( computed ) {

					// We should always get a number back from opacity
					var ret = curCSS( elem, "opacity" );
					return ret === "" ? "1" : ret;
				}
			}
		}
	},

	// Don't automatically add "px" to these possibly-unitless properties
	cssNumber: {
		"animationIterationCount": true,
		"columnCount": true,
		"fillOpacity": true,
		"flexGrow": true,
		"flexShrink": true,
		"fontWeight": true,
		"lineHeight": true,
		"opacity": true,
		"order": true,
		"orphans": true,
		"widows": true,
		"zIndex": true,
		"zoom": true
	},

	// Add in properties whose names you wish to fix before
	// setting or getting the value
	cssProps: {
		"float": "cssFloat"
	},

	// Get and set the style property on a DOM Node
	style: function( elem, name, value, extra ) {

		// Don't set styles on text and comment nodes
		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
			return;
		}

		// Make sure that we're working with the right name
		var ret, type, hooks,
			origName = jQuery.camelCase( name ),
			style = elem.style;

		name = jQuery.cssProps[ origName ] ||
			( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName );

		// Gets hook for the prefixed version, then unprefixed version
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// Check if we're setting a value
		if ( value !== undefined ) {
			type = typeof value;

			// Convert "+=" or "-=" to relative numbers (#7345)
			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
				value = adjustCSS( elem, name, ret );

				// Fixes bug #9237
				type = "number";
			}

			// Make sure that null and NaN values aren't set (#7116)
			if ( value == null || value !== value ) {
				return;
			}

			// If a number was passed in, add the unit (except for certain CSS properties)
			if ( type === "number" ) {
				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
			}

			// Support: IE9-11+
			// background-* props affect original clone's values
			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
				style[ name ] = "inherit";
			}

			// If a hook was provided, use that value, otherwise just set the specified value
			if ( !hooks || !( "set" in hooks ) ||
				( value = hooks.set( elem, value, extra ) ) !== undefined ) {

				style[ name ] = value;
			}

		} else {

			// If a hook was provided get the non-computed value from there
			if ( hooks && "get" in hooks &&
				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {

				return ret;
			}

			// Otherwise just get the value from the style object
			return style[ name ];
		}
	},

	css: function( elem, name, extra, styles ) {
		var val, num, hooks,
			origName = jQuery.camelCase( name );

		// Make sure that we're working with the right name
		name = jQuery.cssProps[ origName ] ||
			( jQuery.cssProps[ origName ] = vendorPropName( origName ) || origName );

		// Try prefixed name followed by the unprefixed name
		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

		// If a hook was provided get the computed value from there
		if ( hooks && "get" in hooks ) {
			val = hooks.get( elem, true, extra );
		}

		// Otherwise, if a way to get the computed value exists, use that
		if ( val === undefined ) {
			val = curCSS( elem, name, styles );
		}

		// Convert "normal" to computed value
		if ( val === "normal" && name in cssNormalTransform ) {
			val = cssNormalTransform[ name ];
		}

		// Make numeric if forced or a qualifier was provided and val looks numeric
		if ( extra === "" || extra ) {
			num = parseFloat( val );
			return extra === true || isFinite( num ) ? num || 0 : val;
		}
		return val;
	}
} );

jQuery.each( [ "height", "width" ], function( i, name ) {
	jQuery.cssHooks[ name ] = {
		get: function( elem, computed, extra ) {
			if ( computed ) {

				// Certain elements can have dimension info if we invisibly show them
				// but it must have a current display style that would benefit
				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
					elem.offsetWidth === 0 ?
						swap( elem, cssShow, function() {
							return getWidthOrHeight( elem, name, extra );
						} ) :
						getWidthOrHeight( elem, name, extra );
			}
		},

		set: function( elem, value, extra ) {
			var matches,
				styles = extra && getStyles( elem ),
				subtract = extra && augmentWidthOrHeight(
					elem,
					name,
					extra,
					jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
					styles
				);

			// Convert to pixels if value adjustment is needed
			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
				( matches[ 3 ] || "px" ) !== "px" ) {

				elem.style[ name ] = value;
				value = jQuery.css( elem, name );
			}

			return setPositiveNumber( elem, value, subtract );
		}
	};
} );

jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
	function( elem, computed ) {
		if ( computed ) {
			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
				elem.getBoundingClientRect().left -
					swap( elem, { marginLeft: 0 }, function() {
						return elem.getBoundingClientRect().left;
					} )
				) + "px";
		}
	}
);

// Support: Android 2.3
jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
	function( elem, computed ) {
		if ( computed ) {
			return swap( elem, { "display": "inline-block" },
				curCSS, [ elem, "marginRight" ] );
		}
	}
);

// These hooks are used by animate to expand properties
jQuery.each( {
	margin: "",
	padding: "",
	border: "Width"
}, function( prefix, suffix ) {
	jQuery.cssHooks[ prefix + suffix ] = {
		expand: function( value ) {
			var i = 0,
				expanded = {},

				// Assumes a single number if not a string
				parts = typeof value === "string" ? value.split( " " ) : [ value ];

			for ( ; i < 4; i++ ) {
				expanded[ prefix + cssExpand[ i ] + suffix ] =
					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
			}

			return expanded;
		}
	};

	if ( !rmargin.test( prefix ) ) {
		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
	}
} );

jQuery.fn.extend( {
	css: function( name, value ) {
		return access( this, function( elem, name, value ) {
			var styles, len,
				map = {},
				i = 0;

			if ( jQuery.isArray( name ) ) {
				styles = getStyles( elem );
				len = name.length;

				for ( ; i < len; i++ ) {
					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
				}

				return map;
			}

			return value !== undefined ?
				jQuery.style( elem, name, value ) :
				jQuery.css( elem, name );
		}, name, value, arguments.length > 1 );
	},
	show: function() {
		return showHide( this, true );
	},
	hide: function() {
		return showHide( this );
	},
	toggle: function( state ) {
		if ( typeof state === "boolean" ) {
			return state ? this.show() : this.hide();
		}

		return this.each( function() {
			if ( isHidden( this ) ) {
				jQuery( this ).show();
			} else {
				jQuery( this ).hide();
			}
		} );
	}
} );


function Tween( elem, options, prop, end, easing ) {
	return new Tween.prototype.init( elem, options, prop, end, easing );
}
jQuery.Tween = Tween;

Tween.prototype = {
	constructor: Tween,
	init: function( elem, options, prop, end, easing, unit ) {
		this.elem = elem;
		this.prop = prop;
		this.easing = easing || jQuery.easing._default;
		this.options = options;
		this.start = this.now = this.cur();
		this.end = end;
		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
	},
	cur: function() {
		var hooks = Tween.propHooks[ this.prop ];

		return hooks && hooks.get ?
			hooks.get( this ) :
			Tween.propHooks._default.get( this );
	},
	run: function( percent ) {
		var eased,
			hooks = Tween.propHooks[ this.prop ];

		if ( this.options.duration ) {
			this.pos = eased = jQuery.easing[ this.easing ](
				percent, this.options.duration * percent, 0, 1, this.options.duration
			);
		} else {
			this.pos = eased = percent;
		}
		this.now = ( this.end - this.start ) * eased + this.start;

		if ( this.options.step ) {
			this.options.step.call( this.elem, this.now, this );
		}

		if ( hooks && hooks.set ) {
			hooks.set( this );
		} else {
			Tween.propHooks._default.set( this );
		}
		return this;
	}
};

Tween.prototype.init.prototype = Tween.prototype;

Tween.propHooks = {
	_default: {
		get: function( tween ) {
			var result;

			// Use a property on the element directly when it is not a DOM element,
			// or when there is no matching style property that exists.
			if ( tween.elem.nodeType !== 1 ||
				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
				return tween.elem[ tween.prop ];
			}

			// Passing an empty string as a 3rd parameter to .css will automatically
			// attempt a parseFloat and fallback to a string if the parse fails.
			// Simple values such as "10px" are parsed to Float;
			// complex values such as "rotate(1rad)" are returned as-is.
			result = jQuery.css( tween.elem, tween.prop, "" );

			// Empty strings, null, undefined and "auto" are converted to 0.
			return !result || result === "auto" ? 0 : result;
		},
		set: function( tween ) {

			// Use step hook for back compat.
			// Use cssHook if its there.
			// Use .style if available and use plain properties where available.
			if ( jQuery.fx.step[ tween.prop ] ) {
				jQuery.fx.step[ tween.prop ]( tween );
			} else if ( tween.elem.nodeType === 1 &&
				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
					jQuery.cssHooks[ tween.prop ] ) ) {
				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
			} else {
				tween.elem[ tween.prop ] = tween.now;
			}
		}
	}
};

// Support: IE9
// Panic based approach to setting things on disconnected nodes
Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
	set: function( tween ) {
		if ( tween.elem.nodeType && tween.elem.parentNode ) {
			tween.elem[ tween.prop ] = tween.now;
		}
	}
};

jQuery.easing = {
	linear: function( p ) {
		return p;
	},
	swing: function( p ) {
		return 0.5 - Math.cos( p * Math.PI ) / 2;
	},
	_default: "swing"
};

jQuery.fx = Tween.prototype.init;

// Back Compat <1.8 extension point
jQuery.fx.step = {};




var
	fxNow, timerId,
	rfxtypes = /^(?:toggle|show|hide)$/,
	rrun = /queueHooks$/;

// Animations created synchronously will run synchronously
function createFxNow() {
	window.setTimeout( function() {
		fxNow = undefined;
	} );
	return ( fxNow = jQuery.now() );
}

// Generate parameters to create a standard animation
function genFx( type, includeWidth ) {
	var which,
		i = 0,
		attrs = { height: type };

	// If we include width, step value is 1 to do all cssExpand values,
	// otherwise step value is 2 to skip over Left and Right
	includeWidth = includeWidth ? 1 : 0;
	for ( ; i < 4 ; i += 2 - includeWidth ) {
		which = cssExpand[ i ];
		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
	}

	if ( includeWidth ) {
		attrs.opacity = attrs.width = type;
	}

	return attrs;
}

function createTween( value, prop, animation ) {
	var tween,
		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
		index = 0,
		length = collection.length;
	for ( ; index < length; index++ ) {
		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {

			// We're done with this property
			return tween;
		}
	}
}

function defaultPrefilter( elem, props, opts ) {
	/* jshint validthis: true */
	var prop, value, toggle, tween, hooks, oldfire, display, checkDisplay,
		anim = this,
		orig = {},
		style = elem.style,
		hidden = elem.nodeType && isHidden( elem ),
		dataShow = dataPriv.get( elem, "fxshow" );

	// Handle queue: false promises
	if ( !opts.queue ) {
		hooks = jQuery._queueHooks( elem, "fx" );
		if ( hooks.unqueued == null ) {
			hooks.unqueued = 0;
			oldfire = hooks.empty.fire;
			hooks.empty.fire = function() {
				if ( !hooks.unqueued ) {
					oldfire();
				}
			};
		}
		hooks.unqueued++;

		anim.always( function() {

			// Ensure the complete handler is called before this completes
			anim.always( function() {
				hooks.unqueued--;
				if ( !jQuery.queue( elem, "fx" ).length ) {
					hooks.empty.fire();
				}
			} );
		} );
	}

	// Height/width overflow pass
	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {

		// Make sure that nothing sneaks out
		// Record all 3 overflow attributes because IE9-10 do not
		// change the overflow attribute when overflowX and
		// overflowY are set to the same value
		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];

		// Set display property to inline-block for height/width
		// animations on inline elements that are having width/height animated
		display = jQuery.css( elem, "display" );

		// Test default display if display is currently "none"
		checkDisplay = display === "none" ?
			dataPriv.get( elem, "olddisplay" ) || defaultDisplay( elem.nodeName ) : display;

		if ( checkDisplay === "inline" && jQuery.css( elem, "float" ) === "none" ) {
			style.display = "inline-block";
		}
	}

	if ( opts.overflow ) {
		style.overflow = "hidden";
		anim.always( function() {
			style.overflow = opts.overflow[ 0 ];
			style.overflowX = opts.overflow[ 1 ];
			style.overflowY = opts.overflow[ 2 ];
		} );
	}

	// show/hide pass
	for ( prop in props ) {
		value = props[ prop ];
		if ( rfxtypes.exec( value ) ) {
			delete props[ prop ];
			toggle = toggle || value === "toggle";
			if ( value === ( hidden ? "hide" : "show" ) ) {

				// If there is dataShow left over from a stopped hide or show
				// and we are going to proceed with show, we should pretend to be hidden
				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
					hidden = true;
				} else {
					continue;
				}
			}
			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );

		// Any non-fx value stops us from restoring the original display value
		} else {
			display = undefined;
		}
	}

	if ( !jQuery.isEmptyObject( orig ) ) {
		if ( dataShow ) {
			if ( "hidden" in dataShow ) {
				hidden = dataShow.hidden;
			}
		} else {
			dataShow = dataPriv.access( elem, "fxshow", {} );
		}

		// Store state if its toggle - enables .stop().toggle() to "reverse"
		if ( toggle ) {
			dataShow.hidden = !hidden;
		}
		if ( hidden ) {
			jQuery( elem ).show();
		} else {
			anim.done( function() {
				jQuery( elem ).hide();
			} );
		}
		anim.done( function() {
			var prop;

			dataPriv.remove( elem, "fxshow" );
			for ( prop in orig ) {
				jQuery.style( elem, prop, orig[ prop ] );
			}
		} );
		for ( prop in orig ) {
			tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );

			if ( !( prop in dataShow ) ) {
				dataShow[ prop ] = tween.start;
				if ( hidden ) {
					tween.end = tween.start;
					tween.start = prop === "width" || prop === "height" ? 1 : 0;
				}
			}
		}

	// If this is a noop like .hide().hide(), restore an overwritten display value
	} else if ( ( display === "none" ? defaultDisplay( elem.nodeName ) : display ) === "inline" ) {
		style.display = display;
	}
}

function propFilter( props, specialEasing ) {
	var index, name, easing, value, hooks;

	// camelCase, specialEasing and expand cssHook pass
	for ( index in props ) {
		name = jQuery.camelCase( index );
		easing = specialEasing[ name ];
		value = props[ index ];
		if ( jQuery.isArray( value ) ) {
			easing = value[ 1 ];
			value = props[ index ] = value[ 0 ];
		}

		if ( index !== name ) {
			props[ name ] = value;
			delete props[ index ];
		}

		hooks = jQuery.cssHooks[ name ];
		if ( hooks && "expand" in hooks ) {
			value = hooks.expand( value );
			delete props[ name ];

			// Not quite $.extend, this won't overwrite existing keys.
			// Reusing 'index' because we have the correct "name"
			for ( index in value ) {
				if ( !( index in props ) ) {
					props[ index ] = value[ index ];
					specialEasing[ index ] = easing;
				}
			}
		} else {
			specialEasing[ name ] = easing;
		}
	}
}

function Animation( elem, properties, options ) {
	var result,
		stopped,
		index = 0,
		length = Animation.prefilters.length,
		deferred = jQuery.Deferred().always( function() {

			// Don't match elem in the :animated selector
			delete tick.elem;
		} ),
		tick = function() {
			if ( stopped ) {
				return false;
			}
			var currentTime = fxNow || createFxNow(),
				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),

				// Support: Android 2.3
				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
				temp = remaining / animation.duration || 0,
				percent = 1 - temp,
				index = 0,
				length = animation.tweens.length;

			for ( ; index < length ; index++ ) {
				animation.tweens[ index ].run( percent );
			}

			deferred.notifyWith( elem, [ animation, percent, remaining ] );

			if ( percent < 1 && length ) {
				return remaining;
			} else {
				deferred.resolveWith( elem, [ animation ] );
				return false;
			}
		},
		animation = deferred.promise( {
			elem: elem,
			props: jQuery.extend( {}, properties ),
			opts: jQuery.extend( true, {
				specialEasing: {},
				easing: jQuery.easing._default
			}, options ),
			originalProperties: properties,
			originalOptions: options,
			startTime: fxNow || createFxNow(),
			duration: options.duration,
			tweens: [],
			createTween: function( prop, end ) {
				var tween = jQuery.Tween( elem, animation.opts, prop, end,
						animation.opts.specialEasing[ prop ] || animation.opts.easing );
				animation.tweens.push( tween );
				return tween;
			},
			stop: function( gotoEnd ) {
				var index = 0,

					// If we are going to the end, we want to run all the tweens
					// otherwise we skip this part
					length = gotoEnd ? animation.tweens.length : 0;
				if ( stopped ) {
					return this;
				}
				stopped = true;
				for ( ; index < length ; index++ ) {
					animation.tweens[ index ].run( 1 );
				}

				// Resolve when we played the last frame; otherwise, reject
				if ( gotoEnd ) {
					deferred.notifyWith( elem, [ animation, 1, 0 ] );
					deferred.resolveWith( elem, [ animation, gotoEnd ] );
				} else {
					deferred.rejectWith( elem, [ animation, gotoEnd ] );
				}
				return this;
			}
		} ),
		props = animation.props;

	propFilter( props, animation.opts.specialEasing );

	for ( ; index < length ; index++ ) {
		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
		if ( result ) {
			if ( jQuery.isFunction( result.stop ) ) {
				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
					jQuery.proxy( result.stop, result );
			}
			return result;
		}
	}

	jQuery.map( props, createTween, animation );

	if ( jQuery.isFunction( animation.opts.start ) ) {
		animation.opts.start.call( elem, animation );
	}

	jQuery.fx.timer(
		jQuery.extend( tick, {
			elem: elem,
			anim: animation,
			queue: animation.opts.queue
		} )
	);

	// attach callbacks from options
	return animation.progress( animation.opts.progress )
		.done( animation.opts.done, animation.opts.complete )
		.fail( animation.opts.fail )
		.always( animation.opts.always );
}

jQuery.Animation = jQuery.extend( Animation, {
	tweeners: {
		"*": [ function( prop, value ) {
			var tween = this.createTween( prop, value );
			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
			return tween;
		} ]
	},

	tweener: function( props, callback ) {
		if ( jQuery.isFunction( props ) ) {
			callback = props;
			props = [ "*" ];
		} else {
			props = props.match( rnotwhite );
		}

		var prop,
			index = 0,
			length = props.length;

		for ( ; index < length ; index++ ) {
			prop = props[ index ];
			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
			Animation.tweeners[ prop ].unshift( callback );
		}
	},

	prefilters: [ defaultPrefilter ],

	prefilter: function( callback, prepend ) {
		if ( prepend ) {
			Animation.prefilters.unshift( callback );
		} else {
			Animation.prefilters.push( callback );
		}
	}
} );

jQuery.speed = function( speed, easing, fn ) {
	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
		complete: fn || !fn && easing ||
			jQuery.isFunction( speed ) && speed,
		duration: speed,
		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
	};

	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ?
		opt.duration : opt.duration in jQuery.fx.speeds ?
			jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;

	// Normalize opt.queue - true/undefined/null -> "fx"
	if ( opt.queue == null || opt.queue === true ) {
		opt.queue = "fx";
	}

	// Queueing
	opt.old = opt.complete;

	opt.complete = function() {
		if ( jQuery.isFunction( opt.old ) ) {
			opt.old.call( this );
		}

		if ( opt.queue ) {
			jQuery.dequeue( this, opt.queue );
		}
	};

	return opt;
};

jQuery.fn.extend( {
	fadeTo: function( speed, to, easing, callback ) {

		// Show any hidden elements after setting opacity to 0
		return this.filter( isHidden ).css( "opacity", 0 ).show()

			// Animate to the value specified
			.end().animate( { opacity: to }, speed, easing, callback );
	},
	animate: function( prop, speed, easing, callback ) {
		var empty = jQuery.isEmptyObject( prop ),
			optall = jQuery.speed( speed, easing, callback ),
			doAnimation = function() {

				// Operate on a copy of prop so per-property easing won't be lost
				var anim = Animation( this, jQuery.extend( {}, prop ), optall );

				// Empty animations, or finishing resolves immediately
				if ( empty || dataPriv.get( this, "finish" ) ) {
					anim.stop( true );
				}
			};
			doAnimation.finish = doAnimation;

		return empty || optall.queue === false ?
			this.each( doAnimation ) :
			this.queue( optall.queue, doAnimation );
	},
	stop: function( type, clearQueue, gotoEnd ) {
		var stopQueue = function( hooks ) {
			var stop = hooks.stop;
			delete hooks.stop;
			stop( gotoEnd );
		};

		if ( typeof type !== "string" ) {
			gotoEnd = clearQueue;
			clearQueue = type;
			type = undefined;
		}
		if ( clearQueue && type !== false ) {
			this.queue( type || "fx", [] );
		}

		return this.each( function() {
			var dequeue = true,
				index = type != null && type + "queueHooks",
				timers = jQuery.timers,
				data = dataPriv.get( this );

			if ( index ) {
				if ( data[ index ] && data[ index ].stop ) {
					stopQueue( data[ index ] );
				}
			} else {
				for ( index in data ) {
					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
						stopQueue( data[ index ] );
					}
				}
			}

			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this &&
					( type == null || timers[ index ].queue === type ) ) {

					timers[ index ].anim.stop( gotoEnd );
					dequeue = false;
					timers.splice( index, 1 );
				}
			}

			// Start the next in the queue if the last step wasn't forced.
			// Timers currently will call their complete callbacks, which
			// will dequeue but only if they were gotoEnd.
			if ( dequeue || !gotoEnd ) {
				jQuery.dequeue( this, type );
			}
		} );
	},
	finish: function( type ) {
		if ( type !== false ) {
			type = type || "fx";
		}
		return this.each( function() {
			var index,
				data = dataPriv.get( this ),
				queue = data[ type + "queue" ],
				hooks = data[ type + "queueHooks" ],
				timers = jQuery.timers,
				length = queue ? queue.length : 0;

			// Enable finishing flag on private data
			data.finish = true;

			// Empty the queue first
			jQuery.queue( this, type, [] );

			if ( hooks && hooks.stop ) {
				hooks.stop.call( this, true );
			}

			// Look for any active animations, and finish them
			for ( index = timers.length; index--; ) {
				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
					timers[ index ].anim.stop( true );
					timers.splice( index, 1 );
				}
			}

			// Look for any animations in the old queue and finish them
			for ( index = 0; index < length; index++ ) {
				if ( queue[ index ] && queue[ index ].finish ) {
					queue[ index ].finish.call( this );
				}
			}

			// Turn off finishing flag
			delete data.finish;
		} );
	}
} );

jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
	var cssFn = jQuery.fn[ name ];
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return speed == null || typeof speed === "boolean" ?
			cssFn.apply( this, arguments ) :
			this.animate( genFx( name, true ), speed, easing, callback );
	};
} );

// Generate shortcuts for custom animations
jQuery.each( {
	slideDown: genFx( "show" ),
	slideUp: genFx( "hide" ),
	slideToggle: genFx( "toggle" ),
	fadeIn: { opacity: "show" },
	fadeOut: { opacity: "hide" },
	fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
	jQuery.fn[ name ] = function( speed, easing, callback ) {
		return this.animate( props, speed, easing, callback );
	};
} );

jQuery.timers = [];
jQuery.fx.tick = function() {
	var timer,
		i = 0,
		timers = jQuery.timers;

	fxNow = jQuery.now();

	for ( ; i < timers.length; i++ ) {
		timer = timers[ i ];

		// Checks the timer has not already been removed
		if ( !timer() && timers[ i ] === timer ) {
			timers.splice( i--, 1 );
		}
	}

	if ( !timers.length ) {
		jQuery.fx.stop();
	}
	fxNow = undefined;
};

jQuery.fx.timer = function( timer ) {
	jQuery.timers.push( timer );
	if ( timer() ) {
		jQuery.fx.start();
	} else {
		jQuery.timers.pop();
	}
};

jQuery.fx.interval = 13;
jQuery.fx.start = function() {
	if ( !timerId ) {
		timerId = window.setInterval( jQuery.fx.tick, jQuery.fx.interval );
	}
};

jQuery.fx.stop = function() {
	window.clearInterval( timerId );

	timerId = null;
};

jQuery.fx.speeds = {
	slow: 600,
	fast: 200,

	// Default speed
	_default: 400
};


// Based off of the plugin by Clint Helfers, with permission.
// http://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
jQuery.fn.delay = function( time, type ) {
	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
	type = type || "fx";

	return this.queue( type, function( next, hooks ) {
		var timeout = window.setTimeout( next, time );
		hooks.stop = function() {
			window.clearTimeout( timeout );
		};
	} );
};


( function() {
	var input = document.createElement( "input" ),
		select = document.createElement( "select" ),
		opt = select.appendChild( document.createElement( "option" ) );

	input.type = "checkbox";

	// Support: iOS<=5.1, Android<=4.2+
	// Default value for a checkbox should be "on"
	support.checkOn = input.value !== "";

	// Support: IE<=11+
	// Must access selectedIndex to make default options select
	support.optSelected = opt.selected;

	// Support: Android<=2.3
	// Options inside disabled selects are incorrectly marked as disabled
	select.disabled = true;
	support.optDisabled = !opt.disabled;

	// Support: IE<=11+
	// An input loses its value after becoming a radio
	input = document.createElement( "input" );
	input.value = "t";
	input.type = "radio";
	support.radioValue = input.value === "t";
} )();


var boolHook,
	attrHandle = jQuery.expr.attrHandle;

jQuery.fn.extend( {
	attr: function( name, value ) {
		return access( this, jQuery.attr, name, value, arguments.length > 1 );
	},

	removeAttr: function( name ) {
		return this.each( function() {
			jQuery.removeAttr( this, name );
		} );
	}
} );

jQuery.extend( {
	attr: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set attributes on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		// Fallback to prop when attributes are not supported
		if ( typeof elem.getAttribute === "undefined" ) {
			return jQuery.prop( elem, name, value );
		}

		// All attributes are lowercase
		// Grab necessary hook if one is defined
		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
			name = name.toLowerCase();
			hooks = jQuery.attrHooks[ name ] ||
				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
		}

		if ( value !== undefined ) {
			if ( value === null ) {
				jQuery.removeAttr( elem, name );
				return;
			}

			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			elem.setAttribute( name, value + "" );
			return value;
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		ret = jQuery.find.attr( elem, name );

		// Non-existent attributes return null, we normalize to undefined
		return ret == null ? undefined : ret;
	},

	attrHooks: {
		type: {
			set: function( elem, value ) {
				if ( !support.radioValue && value === "radio" &&
					jQuery.nodeName( elem, "input" ) ) {
					var val = elem.value;
					elem.setAttribute( "type", value );
					if ( val ) {
						elem.value = val;
					}
					return value;
				}
			}
		}
	},

	removeAttr: function( elem, value ) {
		var name, propName,
			i = 0,
			attrNames = value && value.match( rnotwhite );

		if ( attrNames && elem.nodeType === 1 ) {
			while ( ( name = attrNames[ i++ ] ) ) {
				propName = jQuery.propFix[ name ] || name;

				// Boolean attributes get special treatment (#10870)
				if ( jQuery.expr.match.bool.test( name ) ) {

					// Set corresponding property to false
					elem[ propName ] = false;
				}

				elem.removeAttribute( name );
			}
		}
	}
} );

// Hooks for boolean attributes
boolHook = {
	set: function( elem, value, name ) {
		if ( value === false ) {

			// Remove boolean attributes when set to false
			jQuery.removeAttr( elem, name );
		} else {
			elem.setAttribute( name, name );
		}
		return name;
	}
};
jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
	var getter = attrHandle[ name ] || jQuery.find.attr;

	attrHandle[ name ] = function( elem, name, isXML ) {
		var ret, handle;
		if ( !isXML ) {

			// Avoid an infinite loop by temporarily removing this function from the getter
			handle = attrHandle[ name ];
			attrHandle[ name ] = ret;
			ret = getter( elem, name, isXML ) != null ?
				name.toLowerCase() :
				null;
			attrHandle[ name ] = handle;
		}
		return ret;
	};
} );




var rfocusable = /^(?:input|select|textarea|button)$/i,
	rclickable = /^(?:a|area)$/i;

jQuery.fn.extend( {
	prop: function( name, value ) {
		return access( this, jQuery.prop, name, value, arguments.length > 1 );
	},

	removeProp: function( name ) {
		return this.each( function() {
			delete this[ jQuery.propFix[ name ] || name ];
		} );
	}
} );

jQuery.extend( {
	prop: function( elem, name, value ) {
		var ret, hooks,
			nType = elem.nodeType;

		// Don't get/set properties on text, comment and attribute nodes
		if ( nType === 3 || nType === 8 || nType === 2 ) {
			return;
		}

		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {

			// Fix name and attach hooks
			name = jQuery.propFix[ name ] || name;
			hooks = jQuery.propHooks[ name ];
		}

		if ( value !== undefined ) {
			if ( hooks && "set" in hooks &&
				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
				return ret;
			}

			return ( elem[ name ] = value );
		}

		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
			return ret;
		}

		return elem[ name ];
	},

	propHooks: {
		tabIndex: {
			get: function( elem ) {

				// elem.tabIndex doesn't always return the
				// correct value when it hasn't been explicitly set
				// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
				// Use proper attribute retrieval(#12072)
				var tabindex = jQuery.find.attr( elem, "tabindex" );

				return tabindex ?
					parseInt( tabindex, 10 ) :
					rfocusable.test( elem.nodeName ) ||
						rclickable.test( elem.nodeName ) && elem.href ?
							0 :
							-1;
			}
		}
	},

	propFix: {
		"for": "htmlFor",
		"class": "className"
	}
} );

// Support: IE <=11 only
// Accessing the selectedIndex property
// forces the browser to respect setting selected
// on the option
// The getter ensures a default option is selected
// when in an optgroup
if ( !support.optSelected ) {
	jQuery.propHooks.selected = {
		get: function( elem ) {
			var parent = elem.parentNode;
			if ( parent && parent.parentNode ) {
				parent.parentNode.selectedIndex;
			}
			return null;
		},
		set: function( elem ) {
			var parent = elem.parentNode;
			if ( parent ) {
				parent.selectedIndex;

				if ( parent.parentNode ) {
					parent.parentNode.selectedIndex;
				}
			}
		}
	};
}

jQuery.each( [
	"tabIndex",
	"readOnly",
	"maxLength",
	"cellSpacing",
	"cellPadding",
	"rowSpan",
	"colSpan",
	"useMap",
	"frameBorder",
	"contentEditable"
], function() {
	jQuery.propFix[ this.toLowerCase() ] = this;
} );




var rclass = /[\t\r\n\f]/g;

function getClass( elem ) {
	return elem.getAttribute && elem.getAttribute( "class" ) || "";
}

jQuery.fn.extend( {
	addClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( jQuery.isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		if ( typeof value === "string" && value ) {
			classes = value.match( rnotwhite ) || [];

			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );
				cur = elem.nodeType === 1 &&
					( " " + curValue + " " ).replace( rclass, " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {
						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
							cur += clazz + " ";
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = jQuery.trim( cur );
					if ( curValue !== finalValue ) {
						elem.setAttribute( "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	removeClass: function( value ) {
		var classes, elem, cur, curValue, clazz, j, finalValue,
			i = 0;

		if ( jQuery.isFunction( value ) ) {
			return this.each( function( j ) {
				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
			} );
		}

		if ( !arguments.length ) {
			return this.attr( "class", "" );
		}

		if ( typeof value === "string" && value ) {
			classes = value.match( rnotwhite ) || [];

			while ( ( elem = this[ i++ ] ) ) {
				curValue = getClass( elem );

				// This expression is here for better compressibility (see addClass)
				cur = elem.nodeType === 1 &&
					( " " + curValue + " " ).replace( rclass, " " );

				if ( cur ) {
					j = 0;
					while ( ( clazz = classes[ j++ ] ) ) {

						// Remove *all* instances
						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
							cur = cur.replace( " " + clazz + " ", " " );
						}
					}

					// Only assign if different to avoid unneeded rendering.
					finalValue = jQuery.trim( cur );
					if ( curValue !== finalValue ) {
						elem.setAttribute( "class", finalValue );
					}
				}
			}
		}

		return this;
	},

	toggleClass: function( value, stateVal ) {
		var type = typeof value;

		if ( typeof stateVal === "boolean" && type === "string" ) {
			return stateVal ? this.addClass( value ) : this.removeClass( value );
		}

		if ( jQuery.isFunction( value ) ) {
			return this.each( function( i ) {
				jQuery( this ).toggleClass(
					value.call( this, i, getClass( this ), stateVal ),
					stateVal
				);
			} );
		}

		return this.each( function() {
			var className, i, self, classNames;

			if ( type === "string" ) {

				// Toggle individual class names
				i = 0;
				self = jQuery( this );
				classNames = value.match( rnotwhite ) || [];

				while ( ( className = classNames[ i++ ] ) ) {

					// Check each className given, space separated list
					if ( self.hasClass( className ) ) {
						self.removeClass( className );
					} else {
						self.addClass( className );
					}
				}

			// Toggle whole class name
			} else if ( value === undefined || type === "boolean" ) {
				className = getClass( this );
				if ( className ) {

					// Store className if set
					dataPriv.set( this, "__className__", className );
				}

				// If the element has a class name or if we're passed `false`,
				// then remove the whole classname (if there was one, the above saved it).
				// Otherwise bring back whatever was previously saved (if anything),
				// falling back to the empty string if nothing was stored.
				if ( this.setAttribute ) {
					this.setAttribute( "class",
						className || value === false ?
						"" :
						dataPriv.get( this, "__className__" ) || ""
					);
				}
			}
		} );
	},

	hasClass: function( selector ) {
		var className, elem,
			i = 0;

		className = " " + selector + " ";
		while ( ( elem = this[ i++ ] ) ) {
			if ( elem.nodeType === 1 &&
				( " " + getClass( elem ) + " " ).replace( rclass, " " )
					.indexOf( className ) > -1
			) {
				return true;
			}
		}

		return false;
	}
} );




var rreturn = /\r/g,
	rspaces = /[\x20\t\r\n\f]+/g;

jQuery.fn.extend( {
	val: function( value ) {
		var hooks, ret, isFunction,
			elem = this[ 0 ];

		if ( !arguments.length ) {
			if ( elem ) {
				hooks = jQuery.valHooks[ elem.type ] ||
					jQuery.valHooks[ elem.nodeName.toLowerCase() ];

				if ( hooks &&
					"get" in hooks &&
					( ret = hooks.get( elem, "value" ) ) !== undefined
				) {
					return ret;
				}

				ret = elem.value;

				return typeof ret === "string" ?

					// Handle most common string cases
					ret.replace( rreturn, "" ) :

					// Handle cases where value is null/undef or number
					ret == null ? "" : ret;
			}

			return;
		}

		isFunction = jQuery.isFunction( value );

		return this.each( function( i ) {
			var val;

			if ( this.nodeType !== 1 ) {
				return;
			}

			if ( isFunction ) {
				val = value.call( this, i, jQuery( this ).val() );
			} else {
				val = value;
			}

			// Treat null/undefined as ""; convert numbers to string
			if ( val == null ) {
				val = "";

			} else if ( typeof val === "number" ) {
				val += "";

			} else if ( jQuery.isArray( val ) ) {
				val = jQuery.map( val, function( value ) {
					return value == null ? "" : value + "";
				} );
			}

			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];

			// If set returns undefined, fall back to normal setting
			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
				this.value = val;
			}
		} );
	}
} );

jQuery.extend( {
	valHooks: {
		option: {
			get: function( elem ) {

				var val = jQuery.find.attr( elem, "value" );
				return val != null ?
					val :

					// Support: IE10-11+
					// option.text throws exceptions (#14686, #14858)
					// Strip and collapse whitespace
					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
					jQuery.trim( jQuery.text( elem ) ).replace( rspaces, " " );
			}
		},
		select: {
			get: function( elem ) {
				var value, option,
					options = elem.options,
					index = elem.selectedIndex,
					one = elem.type === "select-one" || index < 0,
					values = one ? null : [],
					max = one ? index + 1 : options.length,
					i = index < 0 ?
						max :
						one ? index : 0;

				// Loop through all the selected options
				for ( ; i < max; i++ ) {
					option = options[ i ];

					// IE8-9 doesn't update selected after form reset (#2551)
					if ( ( option.selected || i === index ) &&

							// Don't return options that are disabled or in a disabled optgroup
							( support.optDisabled ?
								!option.disabled : option.getAttribute( "disabled" ) === null ) &&
							( !option.parentNode.disabled ||
								!jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {

						// Get the specific value for the option
						value = jQuery( option ).val();

						// We don't need an array for one selects
						if ( one ) {
							return value;
						}

						// Multi-Selects return an array
						values.push( value );
					}
				}

				return values;
			},

			set: function( elem, value ) {
				var optionSet, option,
					options = elem.options,
					values = jQuery.makeArray( value ),
					i = options.length;

				while ( i-- ) {
					option = options[ i ];
					if ( option.selected =
						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
					) {
						optionSet = true;
					}
				}

				// Force browsers to behave consistently when non-matching value is set
				if ( !optionSet ) {
					elem.selectedIndex = -1;
				}
				return values;
			}
		}
	}
} );

// Radios and checkboxes getter/setter
jQuery.each( [ "radio", "checkbox" ], function() {
	jQuery.valHooks[ this ] = {
		set: function( elem, value ) {
			if ( jQuery.isArray( value ) ) {
				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
			}
		}
	};
	if ( !support.checkOn ) {
		jQuery.valHooks[ this ].get = function( elem ) {
			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
		};
	}
} );




// Return jQuery for attributes-only inclusion


var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;

jQuery.extend( jQuery.event, {

	trigger: function( event, data, elem, onlyHandlers ) {

		var i, cur, tmp, bubbleType, ontype, handle, special,
			eventPath = [ elem || document ],
			type = hasOwn.call( event, "type" ) ? event.type : event,
			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];

		cur = tmp = elem = elem || document;

		// Don't do events on text and comment nodes
		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
			return;
		}

		// focus/blur morphs to focusin/out; ensure we're not firing them right now
		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
			return;
		}

		if ( type.indexOf( "." ) > -1 ) {

			// Namespaced trigger; create a regexp to match event type in handle()
			namespaces = type.split( "." );
			type = namespaces.shift();
			namespaces.sort();
		}
		ontype = type.indexOf( ":" ) < 0 && "on" + type;

		// Caller can pass in a jQuery.Event object, Object, or just an event type string
		event = event[ jQuery.expando ] ?
			event :
			new jQuery.Event( type, typeof event === "object" && event );

		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
		event.isTrigger = onlyHandlers ? 2 : 3;
		event.namespace = namespaces.join( "." );
		event.rnamespace = event.namespace ?
			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
			null;

		// Clean up the event in case it is being reused
		event.result = undefined;
		if ( !event.target ) {
			event.target = elem;
		}

		// Clone any incoming data and prepend the event, creating the handler arg list
		data = data == null ?
			[ event ] :
			jQuery.makeArray( data, [ event ] );

		// Allow special events to draw outside the lines
		special = jQuery.event.special[ type ] || {};
		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
			return;
		}

		// Determine event propagation path in advance, per W3C events spec (#9951)
		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {

			bubbleType = special.delegateType || type;
			if ( !rfocusMorph.test( bubbleType + type ) ) {
				cur = cur.parentNode;
			}
			for ( ; cur; cur = cur.parentNode ) {
				eventPath.push( cur );
				tmp = cur;
			}

			// Only add window if we got to document (e.g., not plain obj or detached DOM)
			if ( tmp === ( elem.ownerDocument || document ) ) {
				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
			}
		}

		// Fire handlers on the event path
		i = 0;
		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {

			event.type = i > 1 ?
				bubbleType :
				special.bindType || type;

			// jQuery handler
			handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] &&
				dataPriv.get( cur, "handle" );
			if ( handle ) {
				handle.apply( cur, data );
			}

			// Native handler
			handle = ontype && cur[ ontype ];
			if ( handle && handle.apply && acceptData( cur ) ) {
				event.result = handle.apply( cur, data );
				if ( event.result === false ) {
					event.preventDefault();
				}
			}
		}
		event.type = type;

		// If nobody prevented the default action, do it now
		if ( !onlyHandlers && !event.isDefaultPrevented() ) {

			if ( ( !special._default ||
				special._default.apply( eventPath.pop(), data ) === false ) &&
				acceptData( elem ) ) {

				// Call a native DOM method on the target with the same name name as the event.
				// Don't do default actions on window, that's where global variables be (#6170)
				if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {

					// Don't re-trigger an onFOO event when we call its FOO() method
					tmp = elem[ ontype ];

					if ( tmp ) {
						elem[ ontype ] = null;
					}

					// Prevent re-triggering of the same event, since we already bubbled it above
					jQuery.event.triggered = type;
					elem[ type ]();
					jQuery.event.triggered = undefined;

					if ( tmp ) {
						elem[ ontype ] = tmp;
					}
				}
			}
		}

		return event.result;
	},

	// Piggyback on a donor event to simulate a different one
	// Used only for `focus(in | out)` events
	simulate: function( type, elem, event ) {
		var e = jQuery.extend(
			new jQuery.Event(),
			event,
			{
				type: type,
				isSimulated: true
			}
		);

		jQuery.event.trigger( e, null, elem );
	}

} );

jQuery.fn.extend( {

	trigger: function( type, data ) {
		return this.each( function() {
			jQuery.event.trigger( type, data, this );
		} );
	},
	triggerHandler: function( type, data ) {
		var elem = this[ 0 ];
		if ( elem ) {
			return jQuery.event.trigger( type, data, elem, true );
		}
	}
} );


jQuery.each( ( "blur focus focusin focusout load resize scroll unload click dblclick " +
	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
	"change select submit keydown keypress keyup error contextmenu" ).split( " " ),
	function( i, name ) {

	// Handle event binding
	jQuery.fn[ name ] = function( data, fn ) {
		return arguments.length > 0 ?
			this.on( name, null, data, fn ) :
			this.trigger( name );
	};
} );

jQuery.fn.extend( {
	hover: function( fnOver, fnOut ) {
		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
	}
} );




support.focusin = "onfocusin" in window;


// Support: Firefox
// Firefox doesn't have focus(in | out) events
// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
//
// Support: Chrome, Safari
// focus(in | out) events fire after focus & blur events,
// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
// Related ticket - https://code.google.com/p/chromium/issues/detail?id=449857
if ( !support.focusin ) {
	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {

		// Attach a single capturing handler on the document while someone wants focusin/focusout
		var handler = function( event ) {
			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
		};

		jQuery.event.special[ fix ] = {
			setup: function() {
				var doc = this.ownerDocument || this,
					attaches = dataPriv.access( doc, fix );

				if ( !attaches ) {
					doc.addEventListener( orig, handler, true );
				}
				dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
			},
			teardown: function() {
				var doc = this.ownerDocument || this,
					attaches = dataPriv.access( doc, fix ) - 1;

				if ( !attaches ) {
					doc.removeEventListener( orig, handler, true );
					dataPriv.remove( doc, fix );

				} else {
					dataPriv.access( doc, fix, attaches );
				}
			}
		};
	} );
}
var location = window.location;

var nonce = jQuery.now();

var rquery = ( /\?/ );



// Support: Android 2.3
// Workaround failure to string-cast null input
jQuery.parseJSON = function( data ) {
	return JSON.parse( data + "" );
};


// Cross-browser xml parsing
jQuery.parseXML = function( data ) {
	var xml;
	if ( !data || typeof data !== "string" ) {
		return null;
	}

	// Support: IE9
	try {
		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
	} catch ( e ) {
		xml = undefined;
	}

	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
		jQuery.error( "Invalid XML: " + data );
	}
	return xml;
};


var
	rhash = /#.*$/,
	rts = /([?&])_=[^&]*/,
	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,

	// #7653, #8125, #8152: local protocol detection
	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
	rnoContent = /^(?:GET|HEAD)$/,
	rprotocol = /^\/\//,

	/* Prefilters
	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
	 * 2) These are called:
	 *    - BEFORE asking for a transport
	 *    - AFTER param serialization (s.data is a string if s.processData is true)
	 * 3) key is the dataType
	 * 4) the catchall symbol "*" can be used
	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
	 */
	prefilters = {},

	/* Transports bindings
	 * 1) key is the dataType
	 * 2) the catchall symbol "*" can be used
	 * 3) selection will start with transport dataType and THEN go to "*" if needed
	 */
	transports = {},

	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
	allTypes = "*/".concat( "*" ),

	// Anchor tag for parsing the document origin
	originAnchor = document.createElement( "a" );
	originAnchor.href = location.href;

// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
function addToPrefiltersOrTransports( structure ) {

	// dataTypeExpression is optional and defaults to "*"
	return function( dataTypeExpression, func ) {

		if ( typeof dataTypeExpression !== "string" ) {
			func = dataTypeExpression;
			dataTypeExpression = "*";
		}

		var dataType,
			i = 0,
			dataTypes = dataTypeExpression.toLowerCase().match( rnotwhite ) || [];

		if ( jQuery.isFunction( func ) ) {

			// For each dataType in the dataTypeExpression
			while ( ( dataType = dataTypes[ i++ ] ) ) {

				// Prepend if requested
				if ( dataType[ 0 ] === "+" ) {
					dataType = dataType.slice( 1 ) || "*";
					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );

				// Otherwise append
				} else {
					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
				}
			}
		}
	};
}

// Base inspection function for prefilters and transports
function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {

	var inspected = {},
		seekingTransport = ( structure === transports );

	function inspect( dataType ) {
		var selected;
		inspected[ dataType ] = true;
		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
			if ( typeof dataTypeOrTransport === "string" &&
				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {

				options.dataTypes.unshift( dataTypeOrTransport );
				inspect( dataTypeOrTransport );
				return false;
			} else if ( seekingTransport ) {
				return !( selected = dataTypeOrTransport );
			}
		} );
		return selected;
	}

	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}

// A special extend for ajax options
// that takes "flat" options (not to be deep extended)
// Fixes #9887
function ajaxExtend( target, src ) {
	var key, deep,
		flatOptions = jQuery.ajaxSettings.flatOptions || {};

	for ( key in src ) {
		if ( src[ key ] !== undefined ) {
			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
		}
	}
	if ( deep ) {
		jQuery.extend( true, target, deep );
	}

	return target;
}

/* Handles responses to an ajax request:
 * - finds the right dataType (mediates between content-type and expected dataType)
 * - returns the corresponding response
 */
function ajaxHandleResponses( s, jqXHR, responses ) {

	var ct, type, finalDataType, firstDataType,
		contents = s.contents,
		dataTypes = s.dataTypes;

	// Remove auto dataType and get content-type in the process
	while ( dataTypes[ 0 ] === "*" ) {
		dataTypes.shift();
		if ( ct === undefined ) {
			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
		}
	}

	// Check if we're dealing with a known content-type
	if ( ct ) {
		for ( type in contents ) {
			if ( contents[ type ] && contents[ type ].test( ct ) ) {
				dataTypes.unshift( type );
				break;
			}
		}
	}

	// Check to see if we have a response for the expected dataType
	if ( dataTypes[ 0 ] in responses ) {
		finalDataType = dataTypes[ 0 ];
	} else {

		// Try convertible dataTypes
		for ( type in responses ) {
			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
				finalDataType = type;
				break;
			}
			if ( !firstDataType ) {
				firstDataType = type;
			}
		}

		// Or just use first one
		finalDataType = finalDataType || firstDataType;
	}

	// If we found a dataType
	// We add the dataType to the list if needed
	// and return the corresponding response
	if ( finalDataType ) {
		if ( finalDataType !== dataTypes[ 0 ] ) {
			dataTypes.unshift( finalDataType );
		}
		return responses[ finalDataType ];
	}
}

/* Chain conversions given the request and the original response
 * Also sets the responseXXX fields on the jqXHR instance
 */
function ajaxConvert( s, response, jqXHR, isSuccess ) {
	var conv2, current, conv, tmp, prev,
		converters = {},

		// Work with a copy of dataTypes in case we need to modify it for conversion
		dataTypes = s.dataTypes.slice();

	// Create converters map with lowercased keys
	if ( dataTypes[ 1 ] ) {
		for ( conv in s.converters ) {
			converters[ conv.toLowerCase() ] = s.converters[ conv ];
		}
	}

	current = dataTypes.shift();

	// Convert to each sequential dataType
	while ( current ) {

		if ( s.responseFields[ current ] ) {
			jqXHR[ s.responseFields[ current ] ] = response;
		}

		// Apply the dataFilter if provided
		if ( !prev && isSuccess && s.dataFilter ) {
			response = s.dataFilter( response, s.dataType );
		}

		prev = current;
		current = dataTypes.shift();

		if ( current ) {

		// There's only work to do if current dataType is non-auto
			if ( current === "*" ) {

				current = prev;

			// Convert response if prev dataType is non-auto and differs from current
			} else if ( prev !== "*" && prev !== current ) {

				// Seek a direct converter
				conv = converters[ prev + " " + current ] || converters[ "* " + current ];

				// If none found, seek a pair
				if ( !conv ) {
					for ( conv2 in converters ) {

						// If conv2 outputs current
						tmp = conv2.split( " " );
						if ( tmp[ 1 ] === current ) {

							// If prev can be converted to accepted input
							conv = converters[ prev + " " + tmp[ 0 ] ] ||
								converters[ "* " + tmp[ 0 ] ];
							if ( conv ) {

								// Condense equivalence converters
								if ( conv === true ) {
									conv = converters[ conv2 ];

								// Otherwise, insert the intermediate dataType
								} else if ( converters[ conv2 ] !== true ) {
									current = tmp[ 0 ];
									dataTypes.unshift( tmp[ 1 ] );
								}
								break;
							}
						}
					}
				}

				// Apply converter (if not an equivalence)
				if ( conv !== true ) {

					// Unless errors are allowed to bubble, catch and return them
					if ( conv && s.throws ) {
						response = conv( response );
					} else {
						try {
							response = conv( response );
						} catch ( e ) {
							return {
								state: "parsererror",
								error: conv ? e : "No conversion from " + prev + " to " + current
							};
						}
					}
				}
			}
		}
	}

	return { state: "success", data: response };
}

jQuery.extend( {

	// Counter for holding the number of active queries
	active: 0,

	// Last-Modified header cache for next request
	lastModified: {},
	etag: {},

	ajaxSettings: {
		url: location.href,
		type: "GET",
		isLocal: rlocalProtocol.test( location.protocol ),
		global: true,
		processData: true,
		async: true,
		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
		/*
		timeout: 0,
		data: null,
		dataType: null,
		username: null,
		password: null,
		cache: null,
		throws: false,
		traditional: false,
		headers: {},
		*/

		accepts: {
			"*": allTypes,
			text: "text/plain",
			html: "text/html",
			xml: "application/xml, text/xml",
			json: "application/json, text/javascript"
		},

		contents: {
			xml: /\bxml\b/,
			html: /\bhtml/,
			json: /\bjson\b/
		},

		responseFields: {
			xml: "responseXML",
			text: "responseText",
			json: "responseJSON"
		},

		// Data converters
		// Keys separate source (or catchall "*") and destination types with a single space
		converters: {

			// Convert anything to text
			"* text": String,

			// Text to html (true = no transformation)
			"text html": true,

			// Evaluate text as a json expression
			"text json": jQuery.parseJSON,

			// Parse text as xml
			"text xml": jQuery.parseXML
		},

		// For options that shouldn't be deep extended:
		// you can add your own custom options here if
		// and when you create one that shouldn't be
		// deep extended (see ajaxExtend)
		flatOptions: {
			url: true,
			context: true
		}
	},

	// Creates a full fledged settings object into target
	// with both ajaxSettings and settings fields.
	// If target is omitted, writes into ajaxSettings.
	ajaxSetup: function( target, settings ) {
		return settings ?

			// Building a settings object
			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :

			// Extending ajaxSettings
			ajaxExtend( jQuery.ajaxSettings, target );
	},

	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
	ajaxTransport: addToPrefiltersOrTransports( transports ),

	// Main method
	ajax: function( url, options ) {

		// If url is an object, simulate pre-1.5 signature
		if ( typeof url === "object" ) {
			options = url;
			url = undefined;
		}

		// Force options to be an object
		options = options || {};

		var transport,

			// URL without anti-cache param
			cacheURL,

			// Response headers
			responseHeadersString,
			responseHeaders,

			// timeout handle
			timeoutTimer,

			// Url cleanup var
			urlAnchor,

			// To know if global events are to be dispatched
			fireGlobals,

			// Loop variable
			i,

			// Create the final options object
			s = jQuery.ajaxSetup( {}, options ),

			// Callbacks context
			callbackContext = s.context || s,

			// Context for global events is callbackContext if it is a DOM node or jQuery collection
			globalEventContext = s.context &&
				( callbackContext.nodeType || callbackContext.jquery ) ?
					jQuery( callbackContext ) :
					jQuery.event,

			// Deferreds
			deferred = jQuery.Deferred(),
			completeDeferred = jQuery.Callbacks( "once memory" ),

			// Status-dependent callbacks
			statusCode = s.statusCode || {},

			// Headers (they are sent all at once)
			requestHeaders = {},
			requestHeadersNames = {},

			// The jqXHR state
			state = 0,

			// Default abort message
			strAbort = "canceled",

			// Fake xhr
			jqXHR = {
				readyState: 0,

				// Builds headers hashtable if needed
				getResponseHeader: function( key ) {
					var match;
					if ( state === 2 ) {
						if ( !responseHeaders ) {
							responseHeaders = {};
							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
							}
						}
						match = responseHeaders[ key.toLowerCase() ];
					}
					return match == null ? null : match;
				},

				// Raw string
				getAllResponseHeaders: function() {
					return state === 2 ? responseHeadersString : null;
				},

				// Caches the header
				setRequestHeader: function( name, value ) {
					var lname = name.toLowerCase();
					if ( !state ) {
						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
						requestHeaders[ name ] = value;
					}
					return this;
				},

				// Overrides response content-type header
				overrideMimeType: function( type ) {
					if ( !state ) {
						s.mimeType = type;
					}
					return this;
				},

				// Status-dependent callbacks
				statusCode: function( map ) {
					var code;
					if ( map ) {
						if ( state < 2 ) {
							for ( code in map ) {

								// Lazy-add the new callback in a way that preserves old ones
								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
							}
						} else {

							// Execute the appropriate callbacks
							jqXHR.always( map[ jqXHR.status ] );
						}
					}
					return this;
				},

				// Cancel the request
				abort: function( statusText ) {
					var finalText = statusText || strAbort;
					if ( transport ) {
						transport.abort( finalText );
					}
					done( 0, finalText );
					return this;
				}
			};

		// Attach deferreds
		deferred.promise( jqXHR ).complete = completeDeferred.add;
		jqXHR.success = jqXHR.done;
		jqXHR.error = jqXHR.fail;

		// Remove hash character (#7531: and string promotion)
		// Add protocol if not provided (prefilters might expect it)
		// Handle falsy url in the settings object (#10093: consistency with old signature)
		// We also use the url parameter if available
		s.url = ( ( url || s.url || location.href ) + "" ).replace( rhash, "" )
			.replace( rprotocol, location.protocol + "//" );

		// Alias method option to type as per ticket #12004
		s.type = options.method || options.type || s.method || s.type;

		// Extract dataTypes list
		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];

		// A cross-domain request is in order when the origin doesn't match the current origin.
		if ( s.crossDomain == null ) {
			urlAnchor = document.createElement( "a" );

			// Support: IE8-11+
			// IE throws exception if url is malformed, e.g. http://example.com:80x/
			try {
				urlAnchor.href = s.url;

				// Support: IE8-11+
				// Anchor's host property isn't correctly set when s.url is relative
				urlAnchor.href = urlAnchor.href;
				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
					urlAnchor.protocol + "//" + urlAnchor.host;
			} catch ( e ) {

				// If there is an error parsing the URL, assume it is crossDomain,
				// it can be rejected by the transport if it is invalid
				s.crossDomain = true;
			}
		}

		// Convert data if not already a string
		if ( s.data && s.processData && typeof s.data !== "string" ) {
			s.data = jQuery.param( s.data, s.traditional );
		}

		// Apply prefilters
		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );

		// If request was aborted inside a prefilter, stop there
		if ( state === 2 ) {
			return jqXHR;
		}

		// We can fire global events as of now if asked to
		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
		fireGlobals = jQuery.event && s.global;

		// Watch for a new set of requests
		if ( fireGlobals && jQuery.active++ === 0 ) {
			jQuery.event.trigger( "ajaxStart" );
		}

		// Uppercase the type
		s.type = s.type.toUpperCase();

		// Determine if request has content
		s.hasContent = !rnoContent.test( s.type );

		// Save the URL in case we're toying with the If-Modified-Since
		// and/or If-None-Match header later on
		cacheURL = s.url;

		// More options handling for requests with no content
		if ( !s.hasContent ) {

			// If data is available, append data to url
			if ( s.data ) {
				cacheURL = ( s.url += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data );

				// #9682: remove data so that it's not used in an eventual retry
				delete s.data;
			}

			// Add anti-cache in url if needed
			if ( s.cache === false ) {
				s.url = rts.test( cacheURL ) ?

					// If there is already a '_' parameter, set its value
					cacheURL.replace( rts, "$1_=" + nonce++ ) :

					// Otherwise add one to the end
					cacheURL + ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + nonce++;
			}
		}

		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
		if ( s.ifModified ) {
			if ( jQuery.lastModified[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
			}
			if ( jQuery.etag[ cacheURL ] ) {
				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
			}
		}

		// Set the correct header, if data is being sent
		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
			jqXHR.setRequestHeader( "Content-Type", s.contentType );
		}

		// Set the Accepts header for the server, depending on the dataType
		jqXHR.setRequestHeader(
			"Accept",
			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
				s.accepts[ s.dataTypes[ 0 ] ] +
					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
				s.accepts[ "*" ]
		);

		// Check for headers option
		for ( i in s.headers ) {
			jqXHR.setRequestHeader( i, s.headers[ i ] );
		}

		// Allow custom headers/mimetypes and early abort
		if ( s.beforeSend &&
			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {

			// Abort if not done already and return
			return jqXHR.abort();
		}

		// Aborting is no longer a cancellation
		strAbort = "abort";

		// Install callbacks on deferreds
		for ( i in { success: 1, error: 1, complete: 1 } ) {
			jqXHR[ i ]( s[ i ] );
		}

		// Get transport
		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );

		// If no transport, we auto-abort
		if ( !transport ) {
			done( -1, "No Transport" );
		} else {
			jqXHR.readyState = 1;

			// Send global event
			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
			}

			// If request was aborted inside ajaxSend, stop there
			if ( state === 2 ) {
				return jqXHR;
			}

			// Timeout
			if ( s.async && s.timeout > 0 ) {
				timeoutTimer = window.setTimeout( function() {
					jqXHR.abort( "timeout" );
				}, s.timeout );
			}

			try {
				state = 1;
				transport.send( requestHeaders, done );
			} catch ( e ) {

				// Propagate exception as error if not done
				if ( state < 2 ) {
					done( -1, e );

				// Simply rethrow otherwise
				} else {
					throw e;
				}
			}
		}

		// Callback for when everything is done
		function done( status, nativeStatusText, responses, headers ) {
			var isSuccess, success, error, response, modified,
				statusText = nativeStatusText;

			// Called once
			if ( state === 2 ) {
				return;
			}

			// State is "done" now
			state = 2;

			// Clear timeout if it exists
			if ( timeoutTimer ) {
				window.clearTimeout( timeoutTimer );
			}

			// Dereference transport for early garbage collection
			// (no matter how long the jqXHR object will be used)
			transport = undefined;

			// Cache response headers
			responseHeadersString = headers || "";

			// Set readyState
			jqXHR.readyState = status > 0 ? 4 : 0;

			// Determine if successful
			isSuccess = status >= 200 && status < 300 || status === 304;

			// Get response data
			if ( responses ) {
				response = ajaxHandleResponses( s, jqXHR, responses );
			}

			// Convert no matter what (that way responseXXX fields are always set)
			response = ajaxConvert( s, response, jqXHR, isSuccess );

			// If successful, handle type chaining
			if ( isSuccess ) {

				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
				if ( s.ifModified ) {
					modified = jqXHR.getResponseHeader( "Last-Modified" );
					if ( modified ) {
						jQuery.lastModified[ cacheURL ] = modified;
					}
					modified = jqXHR.getResponseHeader( "etag" );
					if ( modified ) {
						jQuery.etag[ cacheURL ] = modified;
					}
				}

				// if no content
				if ( status === 204 || s.type === "HEAD" ) {
					statusText = "nocontent";

				// if not modified
				} else if ( status === 304 ) {
					statusText = "notmodified";

				// If we have data, let's convert it
				} else {
					statusText = response.state;
					success = response.data;
					error = response.error;
					isSuccess = !error;
				}
			} else {

				// Extract error from statusText and normalize for non-aborts
				error = statusText;
				if ( status || !statusText ) {
					statusText = "error";
					if ( status < 0 ) {
						status = 0;
					}
				}
			}

			// Set data for the fake xhr object
			jqXHR.status = status;
			jqXHR.statusText = ( nativeStatusText || statusText ) + "";

			// Success/Error
			if ( isSuccess ) {
				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
			} else {
				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
			}

			// Status-dependent callbacks
			jqXHR.statusCode( statusCode );
			statusCode = undefined;

			if ( fireGlobals ) {
				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
					[ jqXHR, s, isSuccess ? success : error ] );
			}

			// Complete
			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );

			if ( fireGlobals ) {
				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );

				// Handle the global AJAX counter
				if ( !( --jQuery.active ) ) {
					jQuery.event.trigger( "ajaxStop" );
				}
			}
		}

		return jqXHR;
	},

	getJSON: function( url, data, callback ) {
		return jQuery.get( url, data, callback, "json" );
	},

	getScript: function( url, callback ) {
		return jQuery.get( url, undefined, callback, "script" );
	}
} );

jQuery.each( [ "get", "post" ], function( i, method ) {
	jQuery[ method ] = function( url, data, callback, type ) {

		// Shift arguments if data argument was omitted
		if ( jQuery.isFunction( data ) ) {
			type = type || callback;
			callback = data;
			data = undefined;
		}

		// The url can be an options object (which then must have .url)
		return jQuery.ajax( jQuery.extend( {
			url: url,
			type: method,
			dataType: type,
			data: data,
			success: callback
		}, jQuery.isPlainObject( url ) && url ) );
	};
} );


jQuery._evalUrl = function( url ) {
	return jQuery.ajax( {
		url: url,

		// Make this explicit, since user can override this through ajaxSetup (#11264)
		type: "GET",
		dataType: "script",
		async: false,
		global: false,
		"throws": true
	} );
};


jQuery.fn.extend( {
	wrapAll: function( html ) {
		var wrap;

		if ( jQuery.isFunction( html ) ) {
			return this.each( function( i ) {
				jQuery( this ).wrapAll( html.call( this, i ) );
			} );
		}

		if ( this[ 0 ] ) {

			// The elements to wrap the target around
			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );

			if ( this[ 0 ].parentNode ) {
				wrap.insertBefore( this[ 0 ] );
			}

			wrap.map( function() {
				var elem = this;

				while ( elem.firstElementChild ) {
					elem = elem.firstElementChild;
				}

				return elem;
			} ).append( this );
		}

		return this;
	},

	wrapInner: function( html ) {
		if ( jQuery.isFunction( html ) ) {
			return this.each( function( i ) {
				jQuery( this ).wrapInner( html.call( this, i ) );
			} );
		}

		return this.each( function() {
			var self = jQuery( this ),
				contents = self.contents();

			if ( contents.length ) {
				contents.wrapAll( html );

			} else {
				self.append( html );
			}
		} );
	},

	wrap: function( html ) {
		var isFunction = jQuery.isFunction( html );

		return this.each( function( i ) {
			jQuery( this ).wrapAll( isFunction ? html.call( this, i ) : html );
		} );
	},

	unwrap: function() {
		return this.parent().each( function() {
			if ( !jQuery.nodeName( this, "body" ) ) {
				jQuery( this ).replaceWith( this.childNodes );
			}
		} ).end();
	}
} );


jQuery.expr.filters.hidden = function( elem ) {
	return !jQuery.expr.filters.visible( elem );
};
jQuery.expr.filters.visible = function( elem ) {

	// Support: Opera <= 12.12
	// Opera reports offsetWidths and offsetHeights less than zero on some elements
	// Use OR instead of AND as the element is not visible if either is true
	// See tickets #10406 and #13132
	return elem.offsetWidth > 0 || elem.offsetHeight > 0 || elem.getClientRects().length > 0;
};




var r20 = /%20/g,
	rbracket = /\[\]$/,
	rCRLF = /\r?\n/g,
	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
	rsubmittable = /^(?:input|select|textarea|keygen)/i;

function buildParams( prefix, obj, traditional, add ) {
	var name;

	if ( jQuery.isArray( obj ) ) {

		// Serialize array item.
		jQuery.each( obj, function( i, v ) {
			if ( traditional || rbracket.test( prefix ) ) {

				// Treat each array item as a scalar.
				add( prefix, v );

			} else {

				// Item is non-scalar (array or object), encode its numeric index.
				buildParams(
					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
					v,
					traditional,
					add
				);
			}
		} );

	} else if ( !traditional && jQuery.type( obj ) === "object" ) {

		// Serialize object item.
		for ( name in obj ) {
			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
		}

	} else {

		// Serialize scalar item.
		add( prefix, obj );
	}
}

// Serialize an array of form elements or a set of
// key/values into a query string
jQuery.param = function( a, traditional ) {
	var prefix,
		s = [],
		add = function( key, value ) {

			// If value is a function, invoke it and return its value
			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
		};

	// Set traditional to true for jQuery <= 1.3.2 behavior.
	if ( traditional === undefined ) {
		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
	}

	// If an array was passed in, assume that it is an array of form elements.
	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {

		// Serialize the form elements
		jQuery.each( a, function() {
			add( this.name, this.value );
		} );

	} else {

		// If traditional, encode the "old" way (the way 1.3.2 or older
		// did it), otherwise encode params recursively.
		for ( prefix in a ) {
			buildParams( prefix, a[ prefix ], traditional, add );
		}
	}

	// Return the resulting serialization
	return s.join( "&" ).replace( r20, "+" );
};

jQuery.fn.extend( {
	serialize: function() {
		return jQuery.param( this.serializeArray() );
	},
	serializeArray: function() {
		return this.map( function() {

			// Can add propHook for "elements" to filter or add form elements
			var elements = jQuery.prop( this, "elements" );
			return elements ? jQuery.makeArray( elements ) : this;
		} )
		.filter( function() {
			var type = this.type;

			// Use .is( ":disabled" ) so that fieldset[disabled] works
			return this.name && !jQuery( this ).is( ":disabled" ) &&
				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
				( this.checked || !rcheckableType.test( type ) );
		} )
		.map( function( i, elem ) {
			var val = jQuery( this ).val();

			return val == null ?
				null :
				jQuery.isArray( val ) ?
					jQuery.map( val, function( val ) {
						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
					} ) :
					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
		} ).get();
	}
} );


jQuery.ajaxSettings.xhr = function() {
	try {
		return new window.XMLHttpRequest();
	} catch ( e ) {}
};

var xhrSuccessStatus = {

		// File protocol always yields status code 0, assume 200
		0: 200,

		// Support: IE9
		// #1450: sometimes IE returns 1223 when it should be 204
		1223: 204
	},
	xhrSupported = jQuery.ajaxSettings.xhr();

support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
support.ajax = xhrSupported = !!xhrSupported;

jQuery.ajaxTransport( function( options ) {
	var callback, errorCallback;

	// Cross domain only allowed if supported through XMLHttpRequest
	if ( support.cors || xhrSupported && !options.crossDomain ) {
		return {
			send: function( headers, complete ) {
				var i,
					xhr = options.xhr();

				xhr.open(
					options.type,
					options.url,
					options.async,
					options.username,
					options.password
				);

				// Apply custom fields if provided
				if ( options.xhrFields ) {
					for ( i in options.xhrFields ) {
						xhr[ i ] = options.xhrFields[ i ];
					}
				}

				// Override mime type if needed
				if ( options.mimeType && xhr.overrideMimeType ) {
					xhr.overrideMimeType( options.mimeType );
				}

				// X-Requested-With header
				// For cross-domain requests, seeing as conditions for a preflight are
				// akin to a jigsaw puzzle, we simply never set it to be sure.
				// (it can always be set on a per-request basis or even using ajaxSetup)
				// For same-domain requests, won't change header if already provided.
				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
					headers[ "X-Requested-With" ] = "XMLHttpRequest";
				}

				// Set headers
				for ( i in headers ) {
					xhr.setRequestHeader( i, headers[ i ] );
				}

				// Callback
				callback = function( type ) {
					return function() {
						if ( callback ) {
							callback = errorCallback = xhr.onload =
								xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;

							if ( type === "abort" ) {
								xhr.abort();
							} else if ( type === "error" ) {

								// Support: IE9
								// On a manual native abort, IE9 throws
								// errors on any property access that is not readyState
								if ( typeof xhr.status !== "number" ) {
									complete( 0, "error" );
								} else {
									complete(

										// File: protocol always yields status 0; see #8605, #14207
										xhr.status,
										xhr.statusText
									);
								}
							} else {
								complete(
									xhrSuccessStatus[ xhr.status ] || xhr.status,
									xhr.statusText,

									// Support: IE9 only
									// IE9 has no XHR2 but throws on binary (trac-11426)
									// For XHR2 non-text, let the caller handle it (gh-2498)
									( xhr.responseType || "text" ) !== "text"  ||
									typeof xhr.responseText !== "string" ?
										{ binary: xhr.response } :
										{ text: xhr.responseText },
									xhr.getAllResponseHeaders()
								);
							}
						}
					};
				};

				// Listen to events
				xhr.onload = callback();
				errorCallback = xhr.onerror = callback( "error" );

				// Support: IE9
				// Use onreadystatechange to replace onabort
				// to handle uncaught aborts
				if ( xhr.onabort !== undefined ) {
					xhr.onabort = errorCallback;
				} else {
					xhr.onreadystatechange = function() {

						// Check readyState before timeout as it changes
						if ( xhr.readyState === 4 ) {

							// Allow onerror to be called first,
							// but that will not handle a native abort
							// Also, save errorCallback to a variable
							// as xhr.onerror cannot be accessed
							window.setTimeout( function() {
								if ( callback ) {
									errorCallback();
								}
							} );
						}
					};
				}

				// Create the abort callback
				callback = callback( "abort" );

				try {

					// Do send the request (this may raise an exception)
					xhr.send( options.hasContent && options.data || null );
				} catch ( e ) {

					// #14683: Only rethrow if this hasn't been notified as an error yet
					if ( callback ) {
						throw e;
					}
				}
			},

			abort: function() {
				if ( callback ) {
					callback();
				}
			}
		};
	}
} );




// Install script dataType
jQuery.ajaxSetup( {
	accepts: {
		script: "text/javascript, application/javascript, " +
			"application/ecmascript, application/x-ecmascript"
	},
	contents: {
		script: /\b(?:java|ecma)script\b/
	},
	converters: {
		"text script": function( text ) {
			jQuery.globalEval( text );
			return text;
		}
	}
} );

// Handle cache's special case and crossDomain
jQuery.ajaxPrefilter( "script", function( s ) {
	if ( s.cache === undefined ) {
		s.cache = false;
	}
	if ( s.crossDomain ) {
		s.type = "GET";
	}
} );

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function( s ) {

	// This transport only deals with cross domain requests
	if ( s.crossDomain ) {
		var script, callback;
		return {
			send: function( _, complete ) {
				script = jQuery( "<script>" ).prop( {
					charset: s.scriptCharset,
					src: s.url
				} ).on(
					"load error",
					callback = function( evt ) {
						script.remove();
						callback = null;
						if ( evt ) {
							complete( evt.type === "error" ? 404 : 200, evt.type );
						}
					}
				);

				// Use native DOM manipulation to avoid our domManip AJAX trickery
				document.head.appendChild( script[ 0 ] );
			},
			abort: function() {
				if ( callback ) {
					callback();
				}
			}
		};
	}
} );




var oldCallbacks = [],
	rjsonp = /(=)\?(?=&|$)|\?\?/;

// Default jsonp settings
jQuery.ajaxSetup( {
	jsonp: "callback",
	jsonpCallback: function() {
		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
		this[ callback ] = true;
		return callback;
	}
} );

// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {

	var callbackName, overwritten, responseContainer,
		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
			"url" :
			typeof s.data === "string" &&
				( s.contentType || "" )
					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
				rjsonp.test( s.data ) && "data"
		);

	// Handle iff the expected data type is "jsonp" or we have a parameter to set
	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {

		// Get callback name, remembering preexisting value associated with it
		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
			s.jsonpCallback() :
			s.jsonpCallback;

		// Insert callback into url or form data
		if ( jsonProp ) {
			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
		} else if ( s.jsonp !== false ) {
			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
		}

		// Use data converter to retrieve json after script execution
		s.converters[ "script json" ] = function() {
			if ( !responseContainer ) {
				jQuery.error( callbackName + " was not called" );
			}
			return responseContainer[ 0 ];
		};

		// Force json dataType
		s.dataTypes[ 0 ] = "json";

		// Install callback
		overwritten = window[ callbackName ];
		window[ callbackName ] = function() {
			responseContainer = arguments;
		};

		// Clean-up function (fires after converters)
		jqXHR.always( function() {

			// If previous value didn't exist - remove it
			if ( overwritten === undefined ) {
				jQuery( window ).removeProp( callbackName );

			// Otherwise restore preexisting value
			} else {
				window[ callbackName ] = overwritten;
			}

			// Save back as free
			if ( s[ callbackName ] ) {

				// Make sure that re-using the options doesn't screw things around
				s.jsonpCallback = originalSettings.jsonpCallback;

				// Save the callback name for future use
				oldCallbacks.push( callbackName );
			}

			// Call if it was a function and we have a response
			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
				overwritten( responseContainer[ 0 ] );
			}

			responseContainer = overwritten = undefined;
		} );

		// Delegate to script
		return "script";
	}
} );




// Argument "data" should be string of html
// context (optional): If specified, the fragment will be created in this context,
// defaults to document
// keepScripts (optional): If true, will include scripts passed in the html string
jQuery.parseHTML = function( data, context, keepScripts ) {
	if ( !data || typeof data !== "string" ) {
		return null;
	}
	if ( typeof context === "boolean" ) {
		keepScripts = context;
		context = false;
	}
	context = context || document;

	var parsed = rsingleTag.exec( data ),
		scripts = !keepScripts && [];

	// Single tag
	if ( parsed ) {
		return [ context.createElement( parsed[ 1 ] ) ];
	}

	parsed = buildFragment( [ data ], context, scripts );

	if ( scripts && scripts.length ) {
		jQuery( scripts ).remove();
	}

	return jQuery.merge( [], parsed.childNodes );
};


// Keep a copy of the old load method
var _load = jQuery.fn.load;

/**
 * Load a url into a page
 */
jQuery.fn.load = function( url, params, callback ) {
	if ( typeof url !== "string" && _load ) {
		return _load.apply( this, arguments );
	}

	var selector, type, response,
		self = this,
		off = url.indexOf( " " );

	if ( off > -1 ) {
		selector = jQuery.trim( url.slice( off ) );
		url = url.slice( 0, off );
	}

	// If it's a function
	if ( jQuery.isFunction( params ) ) {

		// We assume that it's the callback
		callback = params;
		params = undefined;

	// Otherwise, build a param string
	} else if ( params && typeof params === "object" ) {
		type = "POST";
	}

	// If we have elements to modify, make the request
	if ( self.length > 0 ) {
		jQuery.ajax( {
			url: url,

			// If "type" variable is undefined, then "GET" method will be used.
			// Make value of this field explicit since
			// user can override it through ajaxSetup method
			type: type || "GET",
			dataType: "html",
			data: params
		} ).done( function( responseText ) {

			// Save response for use in complete callback
			response = arguments;

			self.html( selector ?

				// If a selector was specified, locate the right elements in a dummy div
				// Exclude scripts to avoid IE 'Permission Denied' errors
				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :

				// Otherwise use the full result
				responseText );

		// If the request succeeds, this function gets "data", "status", "jqXHR"
		// but they are ignored because response was set above.
		// If it fails, this function gets "jqXHR", "status", "error"
		} ).always( callback && function( jqXHR, status ) {
			self.each( function() {
				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
			} );
		} );
	}

	return this;
};




// Attach a bunch of functions for handling common AJAX events
jQuery.each( [
	"ajaxStart",
	"ajaxStop",
	"ajaxComplete",
	"ajaxError",
	"ajaxSuccess",
	"ajaxSend"
], function( i, type ) {
	jQuery.fn[ type ] = function( fn ) {
		return this.on( type, fn );
	};
} );




jQuery.expr.filters.animated = function( elem ) {
	return jQuery.grep( jQuery.timers, function( fn ) {
		return elem === fn.elem;
	} ).length;
};




/**
 * Gets a window from an element
 */
function getWindow( elem ) {
	return jQuery.isWindow( elem ) ? elem : elem.nodeType === 9 && elem.defaultView;
}

jQuery.offset = {
	setOffset: function( elem, options, i ) {
		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
			position = jQuery.css( elem, "position" ),
			curElem = jQuery( elem ),
			props = {};

		// Set position first, in-case top/left are set even on static elem
		if ( position === "static" ) {
			elem.style.position = "relative";
		}

		curOffset = curElem.offset();
		curCSSTop = jQuery.css( elem, "top" );
		curCSSLeft = jQuery.css( elem, "left" );
		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;

		// Need to be able to calculate position if either
		// top or left is auto and position is either absolute or fixed
		if ( calculatePosition ) {
			curPosition = curElem.position();
			curTop = curPosition.top;
			curLeft = curPosition.left;

		} else {
			curTop = parseFloat( curCSSTop ) || 0;
			curLeft = parseFloat( curCSSLeft ) || 0;
		}

		if ( jQuery.isFunction( options ) ) {

			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
		}

		if ( options.top != null ) {
			props.top = ( options.top - curOffset.top ) + curTop;
		}
		if ( options.left != null ) {
			props.left = ( options.left - curOffset.left ) + curLeft;
		}

		if ( "using" in options ) {
			options.using.call( elem, props );

		} else {
			curElem.css( props );
		}
	}
};

jQuery.fn.extend( {
	offset: function( options ) {
		if ( arguments.length ) {
			return options === undefined ?
				this :
				this.each( function( i ) {
					jQuery.offset.setOffset( this, options, i );
				} );
		}

		var docElem, win,
			elem = this[ 0 ],
			box = { top: 0, left: 0 },
			doc = elem && elem.ownerDocument;

		if ( !doc ) {
			return;
		}

		docElem = doc.documentElement;

		// Make sure it's not a disconnected DOM node
		if ( !jQuery.contains( docElem, elem ) ) {
			return box;
		}

		box = elem.getBoundingClientRect();
		win = getWindow( doc );
		return {
			top: box.top + win.pageYOffset - docElem.clientTop,
			left: box.left + win.pageXOffset - docElem.clientLeft
		};
	},

	position: function() {
		if ( !this[ 0 ] ) {
			return;
		}

		var offsetParent, offset,
			elem = this[ 0 ],
			parentOffset = { top: 0, left: 0 };

		// Fixed elements are offset from window (parentOffset = {top:0, left: 0},
		// because it is its only offset parent
		if ( jQuery.css( elem, "position" ) === "fixed" ) {

			// Assume getBoundingClientRect is there when computed position is fixed
			offset = elem.getBoundingClientRect();

		} else {

			// Get *real* offsetParent
			offsetParent = this.offsetParent();

			// Get correct offsets
			offset = this.offset();
			if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) {
				parentOffset = offsetParent.offset();
			}

			// Add offsetParent borders
			parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
			parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
		}

		// Subtract parent offsets and element margins
		return {
			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
		};
	},

	// This method will return documentElement in the following cases:
	// 1) For the element inside the iframe without offsetParent, this method will return
	//    documentElement of the parent window
	// 2) For the hidden or detached element
	// 3) For body or html element, i.e. in case of the html node - it will return itself
	//
	// but those exceptions were never presented as a real life use-cases
	// and might be considered as more preferable results.
	//
	// This logic, however, is not guaranteed and can change at any point in the future
	offsetParent: function() {
		return this.map( function() {
			var offsetParent = this.offsetParent;

			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
				offsetParent = offsetParent.offsetParent;
			}

			return offsetParent || documentElement;
		} );
	}
} );

// Create scrollLeft and scrollTop methods
jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
	var top = "pageYOffset" === prop;

	jQuery.fn[ method ] = function( val ) {
		return access( this, function( elem, method, val ) {
			var win = getWindow( elem );

			if ( val === undefined ) {
				return win ? win[ prop ] : elem[ method ];
			}

			if ( win ) {
				win.scrollTo(
					!top ? val : win.pageXOffset,
					top ? val : win.pageYOffset
				);

			} else {
				elem[ method ] = val;
			}
		}, method, val, arguments.length );
	};
} );

// Support: Safari<7-8+, Chrome<37-44+
// Add the top/left cssHooks using jQuery.fn.position
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// Blink bug: https://code.google.com/p/chromium/issues/detail?id=229280
// getComputedStyle returns percent when specified for top/left/bottom/right;
// rather than make the css module depend on the offset module, just check for it here
jQuery.each( [ "top", "left" ], function( i, prop ) {
	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
		function( elem, computed ) {
			if ( computed ) {
				computed = curCSS( elem, prop );

				// If curCSS returns percentage, fallback to offset
				return rnumnonpx.test( computed ) ?
					jQuery( elem ).position()[ prop ] + "px" :
					computed;
			}
		}
	);
} );


// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
		function( defaultExtra, funcName ) {

		// Margin is only for outerHeight, outerWidth
		jQuery.fn[ funcName ] = function( margin, value ) {
			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

			return access( this, function( elem, type, value ) {
				var doc;

				if ( jQuery.isWindow( elem ) ) {

					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
					// isn't a whole lot we can do. See pull request at this URL for discussion:
					// https://github.com/jquery/jquery/pull/764
					return elem.document.documentElement[ "client" + name ];
				}

				// Get document width or height
				if ( elem.nodeType === 9 ) {
					doc = elem.documentElement;

					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
					// whichever is greatest
					return Math.max(
						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
						elem.body[ "offset" + name ], doc[ "offset" + name ],
						doc[ "client" + name ]
					);
				}

				return value === undefined ?

					// Get width or height on the element, requesting but not forcing parseFloat
					jQuery.css( elem, type, extra ) :

					// Set width or height on the element
					jQuery.style( elem, type, value, extra );
			}, type, chainable ? margin : undefined, chainable, null );
		};
	} );
} );


jQuery.fn.extend( {

	bind: function( types, data, fn ) {
		return this.on( types, null, data, fn );
	},
	unbind: function( types, fn ) {
		return this.off( types, null, fn );
	},

	delegate: function( selector, types, data, fn ) {
		return this.on( types, selector, data, fn );
	},
	undelegate: function( selector, types, fn ) {

		// ( namespace ) or ( selector, types [, fn] )
		return arguments.length === 1 ?
			this.off( selector, "**" ) :
			this.off( types, selector || "**", fn );
	},
	size: function() {
		return this.length;
	}
} );

jQuery.fn.andSelf = jQuery.fn.addBack;




// Register as a named AMD module, since jQuery can be concatenated with other
// files that may use define, but not via a proper concatenation script that
// understands anonymous AMD modules. A named AMD is safest and most robust
// way to register. Lowercase jquery is used because AMD module names are
// derived from file names, and jQuery is normally delivered in a lowercase
// file name. Do this after creating the global so that if an AMD module wants
// to call noConflict to hide this version of jQuery, it will work.

// Note that for maximum portability, libraries that are not jQuery should
// declare themselves as anonymous modules, and avoid setting a global if an
// AMD loader is present. jQuery is a special case. For more information, see
// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon

if ( typeof define === "function" && define.amd ) {
	define( "jquery", [], function() {
		return jQuery;
	} );
}



var

	// Map over jQuery in case of overwrite
	_jQuery = window.jQuery,

	// Map over the $ in case of overwrite
	_$ = window.$;

jQuery.noConflict = function( deep ) {
	if ( window.$ === jQuery ) {
		window.$ = _$;
	}

	if ( deep && window.jQuery === jQuery ) {
		window.jQuery = _jQuery;
	}

	return jQuery;
};

// Expose jQuery and $ identifiers, even in AMD
// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
// and CommonJS for browser emulators (#13566)
if ( !noGlobal ) {
	window.jQuery = window.$ = jQuery;
}

return jQuery;
}));

},{}],274:[function(require,module,exports){
'use strict';

var sort = require('./sort');
var range = require('./range');
var within = require('./within');

module.exports = kdbush;

function kdbush(points, getX, getY, nodeSize, ArrayType) {
    return new KDBush(points, getX, getY, nodeSize, ArrayType);
}

function KDBush(points, getX, getY, nodeSize, ArrayType) {
    getX = getX || defaultGetX;
    getY = getY || defaultGetY;
    ArrayType = ArrayType || Array;

    this.nodeSize = nodeSize || 64;
    this.points = points;

    this.ids = new ArrayType(points.length);
    this.coords = new ArrayType(points.length * 2);

    for (var i = 0; i < points.length; i++) {
        this.ids[i] = i;
        this.coords[2 * i] = getX(points[i]);
        this.coords[2 * i + 1] = getY(points[i]);
    }

    sort(this.ids, this.coords, this.nodeSize, 0, this.ids.length - 1, 0);
}

KDBush.prototype = {
    range: function (minX, minY, maxX, maxY) {
        return range(this.ids, this.coords, minX, minY, maxX, maxY, this.nodeSize);
    },

    within: function (x, y, r) {
        return within(this.ids, this.coords, x, y, r, this.nodeSize);
    }
};

function defaultGetX(p) { return p[0]; }
function defaultGetY(p) { return p[1]; }

},{"./range":275,"./sort":276,"./within":277}],275:[function(require,module,exports){
'use strict';

module.exports = range;

function range(ids, coords, minX, minY, maxX, maxY, nodeSize) {
    var stack = [0, ids.length - 1, 0];
    var result = [];
    var x, y;

    while (stack.length) {
        var axis = stack.pop();
        var right = stack.pop();
        var left = stack.pop();

        if (right - left <= nodeSize) {
            for (var i = left; i <= right; i++) {
                x = coords[2 * i];
                y = coords[2 * i + 1];
                if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[i]);
            }
            continue;
        }

        var m = Math.floor((left + right) / 2);

        x = coords[2 * m];
        y = coords[2 * m + 1];

        if (x >= minX && x <= maxX && y >= minY && y <= maxY) result.push(ids[m]);

        var nextAxis = (axis + 1) % 2;

        if (axis === 0 ? minX <= x : minY <= y) {
            stack.push(left);
            stack.push(m - 1);
            stack.push(nextAxis);
        }
        if (axis === 0 ? maxX >= x : maxY >= y) {
            stack.push(m + 1);
            stack.push(right);
            stack.push(nextAxis);
        }
    }

    return result;
}

},{}],276:[function(require,module,exports){
'use strict';

module.exports = sortKD;

function sortKD(ids, coords, nodeSize, left, right, depth) {
    if (right - left <= nodeSize) return;

    var m = Math.floor((left + right) / 2);

    select(ids, coords, m, left, right, depth % 2);

    sortKD(ids, coords, nodeSize, left, m - 1, depth + 1);
    sortKD(ids, coords, nodeSize, m + 1, right, depth + 1);
}

function select(ids, coords, k, left, right, inc) {

    while (right > left) {
        if (right - left > 600) {
            var n = right - left + 1;
            var m = k - left + 1;
            var z = Math.log(n);
            var s = 0.5 * Math.exp(2 * z / 3);
            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
            select(ids, coords, k, newLeft, newRight, inc);
        }

        var t = coords[2 * k + inc];
        var i = left;
        var j = right;

        swapItem(ids, coords, left, k);
        if (coords[2 * right + inc] > t) swapItem(ids, coords, left, right);

        while (i < j) {
            swapItem(ids, coords, i, j);
            i++;
            j--;
            while (coords[2 * i + inc] < t) i++;
            while (coords[2 * j + inc] > t) j--;
        }

        if (coords[2 * left + inc] === t) swapItem(ids, coords, left, j);
        else {
            j++;
            swapItem(ids, coords, j, right);
        }

        if (j <= k) left = j + 1;
        if (k <= j) right = j - 1;
    }
}

function swapItem(ids, coords, i, j) {
    swap(ids, i, j);
    swap(coords, 2 * i, 2 * j);
    swap(coords, 2 * i + 1, 2 * j + 1);
}

function swap(arr, i, j) {
    var tmp = arr[i];
    arr[i] = arr[j];
    arr[j] = tmp;
}

},{}],277:[function(require,module,exports){
'use strict';

module.exports = within;

function within(ids, coords, qx, qy, r, nodeSize) {
    var stack = [0, ids.length - 1, 0];
    var result = [];
    var r2 = r * r;

    while (stack.length) {
        var axis = stack.pop();
        var right = stack.pop();
        var left = stack.pop();

        if (right - left <= nodeSize) {
            for (var i = left; i <= right; i++) {
                if (sqDist(coords[2 * i], coords[2 * i + 1], qx, qy) <= r2) result.push(ids[i]);
            }
            continue;
        }

        var m = Math.floor((left + right) / 2);

        var x = coords[2 * m];
        var y = coords[2 * m + 1];

        if (sqDist(x, y, qx, qy) <= r2) result.push(ids[m]);

        var nextAxis = (axis + 1) % 2;

        if (axis === 0 ? qx - r <= x : qy - r <= y) {
            stack.push(left);
            stack.push(m - 1);
            stack.push(nextAxis);
        }
        if (axis === 0 ? qx + r >= x : qy + r >= y) {
            stack.push(m + 1);
            stack.push(right);
            stack.push(nextAxis);
        }
    }

    return result;
}

function sqDist(ax, ay, bx, by) {
    var dx = ax - bx;
    var dy = ay - by;
    return dx * dx + dy * dy;
}

},{}],278:[function(require,module,exports){
'use strict';

function createFunction(parameters, defaultType) {
    var fun;

    if (!isFunctionDefinition(parameters)) {
        fun = function() { return parameters; };
        fun.isFeatureConstant = true;
        fun.isZoomConstant = true;

    } else {
        var zoomAndFeatureDependent = parameters.stops && typeof parameters.stops[0][0] === 'object';
        var featureDependent = zoomAndFeatureDependent || parameters.property !== undefined;
        var zoomDependent = zoomAndFeatureDependent || !featureDependent;
        var type = parameters.type || defaultType || 'exponential';

        var innerFun;
        if (type === 'exponential') {
            innerFun = evaluateExponentialFunction;
        } else if (type === 'interval') {
            innerFun = evaluateIntervalFunction;
        } else if (type === 'categorical') {
            innerFun = evaluateCategoricalFunction;
        } else if (type === 'identity') {
            innerFun = evaluateIdentityFunction;
        } else {
            throw new Error('Unknown function type "' + type + '"');
        }

        if (zoomAndFeatureDependent) {
            var featureFunctions = {};
            var featureFunctionStops = [];
            for (var s = 0; s < parameters.stops.length; s++) {
                var stop = parameters.stops[s];
                if (featureFunctions[stop[0].zoom] === undefined) {
                    featureFunctions[stop[0].zoom] = {
                        zoom: stop[0].zoom,
                        type: parameters.type,
                        property: parameters.property,
                        stops: []
                    };
                }
                featureFunctions[stop[0].zoom].stops.push([stop[0].value, stop[1]]);
            }

            for (var z in featureFunctions) {
                featureFunctionStops.push([featureFunctions[z].zoom, createFunction(featureFunctions[z])]);
            }
            fun = function(zoom, feature) {
                return evaluateExponentialFunction({ stops: featureFunctionStops, base: parameters.base }, zoom)(zoom, feature);
            };
            fun.isFeatureConstant = false;
            fun.isZoomConstant = false;

        } else if (zoomDependent) {
            fun = function(zoom) {
                return innerFun(parameters, zoom);
            };
            fun.isFeatureConstant = true;
            fun.isZoomConstant = false;
        } else {
            fun = function(zoom, feature) {
                return innerFun(parameters, feature[parameters.property]);
            };
            fun.isFeatureConstant = false;
            fun.isZoomConstant = true;
        }
    }

    return fun;
}

function evaluateCategoricalFunction(parameters, input) {
    for (var i = 0; i < parameters.stops.length; i++) {
        if (input === parameters.stops[i][0]) {
            return parameters.stops[i][1];
        }
    }
    return parameters.stops[0][1];
}

function evaluateIntervalFunction(parameters, input) {
    for (var i = 0; i < parameters.stops.length; i++) {
        if (input < parameters.stops[i][0]) break;
    }
    return parameters.stops[Math.max(i - 1, 0)][1];
}

function evaluateExponentialFunction(parameters, input) {
    var base = parameters.base !== undefined ? parameters.base : 1;

    var i = 0;
    while (true) {
        if (i >= parameters.stops.length) break;
        else if (input <= parameters.stops[i][0]) break;
        else i++;
    }

    if (i === 0) {
        return parameters.stops[i][1];

    } else if (i === parameters.stops.length) {
        return parameters.stops[i - 1][1];

    } else {
        return interpolate(
            input,
            base,
            parameters.stops[i - 1][0],
            parameters.stops[i][0],
            parameters.stops[i - 1][1],
            parameters.stops[i][1]
        );
    }
}

function evaluateIdentityFunction(parameters, input) {
    return input;
}


function interpolate(input, base, inputLower, inputUpper, outputLower, outputUpper) {
    if (typeof outputLower === 'function') {
        return function() {
            var evaluatedLower = outputLower.apply(undefined, arguments);
            var evaluatedUpper = outputUpper.apply(undefined, arguments);
            return interpolate(input, base, inputLower, inputUpper, evaluatedLower, evaluatedUpper);
        };
    } else if (outputLower.length) {
        return interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper);
    } else {
        return interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper);
    }
}

function interpolateNumber(input, base, inputLower, inputUpper, outputLower, outputUpper) {
    var difference =  inputUpper - inputLower;
    var progress = input - inputLower;

    var ratio;
    if (base === 1) {
        ratio = progress / difference;
    } else {
        ratio = (Math.pow(base, progress) - 1) / (Math.pow(base, difference) - 1);
    }

    return (outputLower * (1 - ratio)) + (outputUpper * ratio);
}

function interpolateArray(input, base, inputLower, inputUpper, outputLower, outputUpper) {
    var output = [];
    for (var i = 0; i < outputLower.length; i++) {
        output[i] = interpolateNumber(input, base, inputLower, inputUpper, outputLower[i], outputUpper[i]);
    }
    return output;
}

function isFunctionDefinition(value) {
    return typeof value === 'object' && (value.stops || value.type === 'identity');
}


module.exports.isFunctionDefinition = isFunctionDefinition;

module.exports.interpolated = function(parameters) {
    return createFunction(parameters, 'exponential');
};

module.exports['piecewise-constant'] = function(parameters) {
    return createFunction(parameters, 'interval');
};

},{}],279:[function(require,module,exports){

var path = require('path');

// readFileSync calls must be written out long-form for brfs.
module.exports = {
  debug: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform lowp vec4 u_color;\n\nvoid main() {\n    gl_FragColor = u_color;\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, step(32767.0, a_pos.x), 1);\n}\n"
  },
  fill: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\n#pragma mapbox: define lowp vec4 color\n#pragma mapbox: define lowp float opacity\n\nvoid main() {\n    #pragma mapbox: initialize lowp vec4 color\n    #pragma mapbox: initialize lowp float opacity\n\n    gl_FragColor = color * opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\n\n#pragma mapbox: define lowp vec4 color\n#pragma mapbox: define lowp float opacity\n\nvoid main() {\n    #pragma mapbox: initialize lowp vec4 color\n    #pragma mapbox: initialize lowp float opacity\n\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n}\n"
  },
  circle: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\n#pragma mapbox: define lowp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main() {\n    #pragma mapbox: initialize lowp vec4 color\n    #pragma mapbox: initialize lowp float blur\n    #pragma mapbox: initialize lowp float opacity\n\n    float t = smoothstep(1.0 - max(blur, v_antialiasblur), 1.0, length(v_extrude));\n    gl_FragColor = color * (1.0 - t) * opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform mat4 u_matrix;\nuniform bool u_scale_with_map;\nuniform vec2 u_extrude_scale;\nuniform float u_devicepixelratio;\n\nattribute vec2 a_pos;\n\n#pragma mapbox: define lowp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n\nvarying vec2 v_extrude;\nvarying lowp float v_antialiasblur;\n\nvoid main(void) {\n    #pragma mapbox: initialize lowp vec4 color\n    #pragma mapbox: initialize mediump float radius\n    #pragma mapbox: initialize lowp float blur\n    #pragma mapbox: initialize lowp float opacity\n\n    // unencode the extrusion vector that we snuck into the a_pos vector\n    v_extrude = vec2(mod(a_pos, 2.0) * 2.0 - 1.0);\n\n    vec2 extrude = v_extrude * radius * u_extrude_scale;\n    // multiply a_pos by 0.5, since we had it * 2 in order to sneak\n    // in extrusion data\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5), 0, 1);\n\n    if (u_scale_with_map) {\n        gl_Position.xy += extrude;\n    } else {\n        gl_Position.xy += extrude * gl_Position.w;\n    }\n\n    // This is a minimum blur distance that serves as a faux-antialiasing for\n    // the circle. since blur is a ratio of the circle's size and the intent is\n    // to keep the blur at roughly 1px, the two are inversely related.\n    v_antialiasblur = 1.0 / u_devicepixelratio / radius;\n}\n"
  },
  line: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform float u_blur;\n\nvarying vec2 v_linewidth;\nvarying vec2 v_normal;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * v_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (v_linewidth.t - blur), v_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump float u_linewidth;\nuniform mediump float u_gapwidth;\nuniform mediump float u_antialiasing;\nuniform mediump float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\nuniform mediump float u_blur;\n\nvarying vec2 v_normal;\nvarying vec2 v_linewidth;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    float inset = u_gapwidth + (u_gapwidth > 0.0 ? u_antialiasing : 0.0);\n    float outset = u_gapwidth + u_linewidth * (u_gapwidth > 0.0 ? 2.0 : 1.0) + u_antialiasing;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 dist = outset * a_extrude * scale;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist) / u_ratio, 0.0, 1.0);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_linewidth = vec2(outset, inset);\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
  },
  linepattern: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform float u_blur;\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_fade;\nuniform float u_opacity;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_normal;\nvarying vec2 v_linewidth;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * v_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (v_linewidth.t - blur), v_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float x_a = mod(v_linesofar / u_pattern_size_a.x, 1.0);\n    float x_b = mod(v_linesofar / u_pattern_size_b.x, 1.0);\n    float y_a = 0.5 + (v_normal.y * v_linewidth.s / u_pattern_size_a.y);\n    float y_b = 0.5 + (v_normal.y * v_linewidth.s / u_pattern_size_b.y);\n    vec2 pos_a = mix(u_pattern_tl_a, u_pattern_br_a, vec2(x_a, y_a));\n    vec2 pos_b = mix(u_pattern_tl_b, u_pattern_br_b, vec2(x_b, y_b));\n\n    vec4 color = mix(texture2D(u_image, pos_a), texture2D(u_image, pos_b), u_fade);\n\n    alpha *= u_opacity;\n\n    gl_FragColor = color * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump float u_linewidth;\nuniform mediump float u_gapwidth;\nuniform mediump float u_antialiasing;\nuniform mediump float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_linewidth;\nvarying float v_linesofar;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    float inset = u_gapwidth + (u_gapwidth > 0.0 ? u_antialiasing : 0.0);\n    float outset = u_gapwidth + u_linewidth * (u_gapwidth > 0.0 ? 2.0 : 1.0) + u_antialiasing;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 dist = outset * a_extrude * scale;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist) / u_ratio, 0.0, 1.0);\n    v_linesofar = a_linesofar;\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_linewidth = vec2(outset, inset);\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
  },
  linesdfpattern: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\n\nuniform float u_blur;\nuniform sampler2D u_image;\nuniform float u_sdfgamma;\nuniform float u_mix;\n\nvarying vec2 v_normal;\nvarying vec2 v_linewidth;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    // Calculate the distance of the pixel from the line in pixels.\n    float dist = length(v_normal) * v_linewidth.s;\n\n    // Calculate the antialiasing fade factor. This is either when fading in\n    // the line in case of an offset line (v_linewidth.t) or when fading out\n    // (v_linewidth.s)\n    float blur = u_blur * v_gamma_scale;\n    float alpha = clamp(min(dist - (v_linewidth.t - blur), v_linewidth.s - dist) / blur, 0.0, 1.0);\n\n    float sdfdist_a = texture2D(u_image, v_tex_a).a;\n    float sdfdist_b = texture2D(u_image, v_tex_b).a;\n    float sdfdist = mix(sdfdist_a, sdfdist_b, u_mix);\n    alpha *= smoothstep(0.5 - u_sdfgamma, 0.5 + u_sdfgamma, sdfdist);\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\n// floor(127 / 2) == 63.0\n// the maximum allowed miter limit is 2.0 at the moment. the extrude normal is\n// stored in a byte (-128..127). we scale regular normals up to length 63, but\n// there are also \"special\" normals that have a bigger length (of up to 126 in\n// this case).\n// #define scale 63.0\n#define scale 0.015873016\n\n// We scale the distance before adding it to the buffers so that we can store\n// long distances for long segments. Use this value to unscale the distance.\n#define LINE_DISTANCE_SCALE 2.0\n\nattribute vec2 a_pos;\nattribute vec4 a_data;\n\nuniform mat4 u_matrix;\nuniform mediump float u_ratio;\nuniform mediump float u_linewidth;\nuniform mediump float u_gapwidth;\nuniform mediump float u_antialiasing;\nuniform vec2 u_patternscale_a;\nuniform float u_tex_y_a;\nuniform vec2 u_patternscale_b;\nuniform float u_tex_y_b;\nuniform float u_extra;\nuniform mat2 u_antialiasingmatrix;\nuniform mediump float u_offset;\n\nvarying vec2 v_normal;\nvarying vec2 v_linewidth;\nvarying vec2 v_tex_a;\nvarying vec2 v_tex_b;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_extrude = a_data.xy - 128.0;\n    float a_direction = mod(a_data.z, 4.0) - 1.0;\n    float a_linesofar = (floor(a_data.z / 4.0) + a_data.w * 64.0) * LINE_DISTANCE_SCALE;\n\n    // We store the texture normals in the most insignificant bit\n    // transform y so that 0 => -1 and 1 => 1\n    // In the texture normal, x is 0 if the normal points straight up/down and 1 if it's a round cap\n    // y is 1 if the normal points up, and -1 if it points down\n    mediump vec2 normal = mod(a_pos, 2.0);\n    normal.y = sign(normal.y - 0.5);\n    v_normal = normal;\n\n    float inset = u_gapwidth + (u_gapwidth > 0.0 ? u_antialiasing : 0.0);\n    float outset = u_gapwidth + u_linewidth * (u_gapwidth > 0.0 ? 2.0 : 1.0) + u_antialiasing;\n\n    // Scale the extrusion vector down to a normal and then up by the line width\n    // of this vertex.\n    mediump vec2 dist = outset * a_extrude * scale;\n\n    // Calculate the offset when drawing a line that is to the side of the actual line.\n    // We do this by creating a vector that points towards the extrude, but rotate\n    // it when we're drawing round end points (a_direction = -1 or 1) since their\n    // extrude vector points in another direction.\n    mediump float u = 0.5 * a_direction;\n    mediump float t = 1.0 - abs(u);\n    mediump vec2 offset = u_offset * a_extrude * scale * normal.y * mat2(t, -u, u, t);\n\n    // Remove the texture normal bit of the position before scaling it with the\n    // model/view matrix.\n    gl_Position = u_matrix * vec4(floor(a_pos * 0.5) + (offset + dist) / u_ratio, 0.0, 1.0);\n\n    v_tex_a = vec2(a_linesofar * u_patternscale_a.x, normal.y * u_patternscale_a.y + u_tex_y_a);\n    v_tex_b = vec2(a_linesofar * u_patternscale_b.x, normal.y * u_patternscale_b.y + u_tex_y_b);\n\n    // position of y on the screen\n    float y = gl_Position.y / gl_Position.w;\n\n    // how much features are squished in the y direction by the tilt\n    float squish_scale = length(a_extrude) / length(u_antialiasingmatrix * a_extrude);\n\n    // how much features are squished in all directions by the perspectiveness\n    float perspective_scale = 1.0 / (1.0 - min(y * u_extra, 0.9));\n\n    v_linewidth = vec2(outset, inset);\n    v_gamma_scale = perspective_scale * squish_scale;\n}\n"
  },
  outline: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\n#pragma mapbox: define lowp vec4 outline_color\n#pragma mapbox: define lowp float opacity\n\nvarying vec2 v_pos;\n\nvoid main() {\n    #pragma mapbox: initialize lowp vec4 outline_color\n    #pragma mapbox: initialize lowp float opacity\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    gl_FragColor = outline_color * (alpha * opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos;\n\n#pragma mapbox: define lowp vec4 outline_color\n#pragma mapbox: define lowp float opacity\n\nvoid main() {\n    #pragma mapbox: initialize lowp vec4 outline_color\n    #pragma mapbox: initialize lowp float opacity\n\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos = (gl_Position.xy / gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
  },
  outlinepattern: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    // find distance to outline for alpha interpolation\n\n    float dist = length(v_pos - gl_FragCoord.xy);\n    float alpha = smoothstep(1.0, 0.0, dist);\n    \n\n    gl_FragColor = mix(color1, color2, u_mix) * alpha * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pixel_coord_upper;\nuniform vec2 u_pixel_coord_lower;\nuniform float u_scale_a;\nuniform float u_scale_b;\nuniform float u_tile_units_to_pixels;\n\nattribute vec2 a_pos;\n\nuniform mat4 u_matrix;\nuniform vec2 u_world;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\nvarying vec2 v_pos;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    vec2 scaled_size_a = u_scale_a * u_pattern_size_a;\n    vec2 scaled_size_b = u_scale_b * u_pattern_size_b;\n\n    // the correct offset needs to be calculated.\n    //\n    // The offset depends on how many pixels are between the world origin and\n    // the edge of the tile:\n    // vec2 offset = mod(pixel_coord, size)\n    //\n    // At high zoom levels there are a ton of pixels between the world origin\n    // and the edge of the tile. The glsl spec only guarantees 16 bits of\n    // precision for highp floats. We need more than that.\n    //\n    // The pixel_coord is passed in as two 16 bit values:\n    // pixel_coord_upper = floor(pixel_coord / 2^16)\n    // pixel_coord_lower = mod(pixel_coord, 2^16)\n    //\n    // The offset is calculated in a series of steps that should preserve this precision:\n    vec2 offset_a = mod(mod(mod(u_pixel_coord_upper, scaled_size_a) * 256.0, scaled_size_a) * 256.0 + u_pixel_coord_lower, scaled_size_a);\n    vec2 offset_b = mod(mod(mod(u_pixel_coord_upper, scaled_size_b) * 256.0, scaled_size_b) * 256.0 + u_pixel_coord_lower, scaled_size_b);\n\n    v_pos_a = (u_tile_units_to_pixels * a_pos + offset_a) / scaled_size_a;\n    v_pos_b = (u_tile_units_to_pixels * a_pos + offset_b) / scaled_size_b;\n\n    v_pos = (gl_Position.xy / gl_Position.w + 1.0) / 2.0 * u_world;\n}\n"
  },
  pattern: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform float u_opacity;\nuniform vec2 u_pattern_tl_a;\nuniform vec2 u_pattern_br_a;\nuniform vec2 u_pattern_tl_b;\nuniform vec2 u_pattern_br_b;\nuniform float u_mix;\n\nuniform sampler2D u_image;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n\n    vec2 imagecoord = mod(v_pos_a, 1.0);\n    vec2 pos = mix(u_pattern_tl_a, u_pattern_br_a, imagecoord);\n    vec4 color1 = texture2D(u_image, pos);\n\n    vec2 imagecoord_b = mod(v_pos_b, 1.0);\n    vec2 pos2 = mix(u_pattern_tl_b, u_pattern_br_b, imagecoord_b);\n    vec4 color2 = texture2D(u_image, pos2);\n\n    gl_FragColor = mix(color1, color2, u_mix) * u_opacity;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform mat4 u_matrix;\nuniform vec2 u_pattern_size_a;\nuniform vec2 u_pattern_size_b;\nuniform vec2 u_pixel_coord_upper;\nuniform vec2 u_pixel_coord_lower;\nuniform float u_scale_a;\nuniform float u_scale_b;\nuniform float u_tile_units_to_pixels;\n\nattribute vec2 a_pos;\n\nvarying vec2 v_pos_a;\nvarying vec2 v_pos_b;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    vec2 scaled_size_a = u_scale_a * u_pattern_size_a;\n    vec2 scaled_size_b = u_scale_b * u_pattern_size_b;\n\n    // the correct offset needs to be calculated.\n    //\n    // The offset depends on how many pixels are between the world origin and\n    // the edge of the tile:\n    // vec2 offset = mod(pixel_coord, size)\n    //\n    // At high zoom levels there are a ton of pixels between the world origin\n    // and the edge of the tile. The glsl spec only guarantees 16 bits of\n    // precision for highp floats. We need more than that.\n    //\n    // The pixel_coord is passed in as two 16 bit values:\n    // pixel_coord_upper = floor(pixel_coord / 2^16)\n    // pixel_coord_lower = mod(pixel_coord, 2^16)\n    //\n    // The offset is calculated in a series of steps that should preserve this precision:\n    vec2 offset_a = mod(mod(mod(u_pixel_coord_upper, scaled_size_a) * 256.0, scaled_size_a) * 256.0 + u_pixel_coord_lower, scaled_size_a);\n    vec2 offset_b = mod(mod(mod(u_pixel_coord_upper, scaled_size_b) * 256.0, scaled_size_b) * 256.0 + u_pixel_coord_lower, scaled_size_b);\n\n    v_pos_a = (u_tile_units_to_pixels * a_pos + offset_a) / scaled_size_a;\n    v_pos_b = (u_tile_units_to_pixels * a_pos + offset_b) / scaled_size_b;\n}\n"
  },
  raster: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform float u_opacity0;\nuniform float u_opacity1;\nuniform sampler2D u_image0;\nuniform sampler2D u_image1;\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nuniform float u_brightness_low;\nuniform float u_brightness_high;\n\nuniform float u_saturation_factor;\nuniform float u_contrast_factor;\nuniform vec3 u_spin_weights;\n\nvoid main() {\n\n    // read and cross-fade colors from the main and parent tiles\n    vec4 color0 = texture2D(u_image0, v_pos0);\n    vec4 color1 = texture2D(u_image1, v_pos1);\n    vec4 color = color0 * u_opacity0 + color1 * u_opacity1;\n    vec3 rgb = color.rgb;\n\n    // spin\n    rgb = vec3(\n        dot(rgb, u_spin_weights.xyz),\n        dot(rgb, u_spin_weights.zxy),\n        dot(rgb, u_spin_weights.yzx));\n\n    // saturation\n    float average = (color.r + color.g + color.b) / 3.0;\n    rgb += (average - rgb) * u_saturation_factor;\n\n    // contrast\n    rgb = (rgb - 0.5) * u_contrast_factor + 0.5;\n\n    // brightness\n    vec3 u_high_vec = vec3(u_brightness_low, u_brightness_low, u_brightness_low);\n    vec3 u_low_vec = vec3(u_brightness_high, u_brightness_high, u_brightness_high);\n\n    gl_FragColor = vec4(mix(u_high_vec, u_low_vec, rgb), color.a);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform mat4 u_matrix;\nuniform vec2 u_tl_parent;\nuniform float u_scale_parent;\nuniform float u_buffer_scale;\n\nattribute vec2 a_pos;\nattribute vec2 a_texture_pos;\n\nvarying vec2 v_pos0;\nvarying vec2 v_pos1;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos, 0, 1);\n    v_pos0 = (((a_texture_pos / 32767.0) - 0.5) / u_buffer_scale ) + 0.5;\n    v_pos1 = (v_pos0 * u_scale_parent) + u_tl_parent;\n}\n"
  },
  icon: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp float u_opacity;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    lowp float alpha = texture2D(u_fadetexture, v_fade_tex).a * u_opacity;\n    gl_FragColor = texture2D(u_texture, v_tex) * alpha;\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec2 a_texture_pos;\nattribute vec4 a_data;\n\n\n// matrix is for the vertex position.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_rotate_with_map;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\n\nvoid main() {\n    vec2 a_tex = a_texture_pos.xy;\n    mediump float a_labelminzoom = a_data[0];\n    mediump vec2 a_zoom = a_data.pq;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n    if (u_rotate_with_map) {\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    } else {\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
  },
  sdf: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform sampler2D u_texture;\nuniform sampler2D u_fadetexture;\nuniform lowp vec4 u_color;\nuniform lowp float u_opacity;\nuniform lowp float u_buffer;\nuniform lowp float u_gamma;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    lowp float dist = texture2D(u_texture, v_tex).a;\n    lowp float fade_alpha = texture2D(u_fadetexture, v_fade_tex).a;\n    lowp float gamma = u_gamma * v_gamma_scale;\n    lowp float alpha = smoothstep(u_buffer - gamma, u_buffer + gamma, dist) * fade_alpha;\n\n    gl_FragColor = u_color * (alpha * u_opacity);\n\n#ifdef OVERDRAW_INSPECTOR\n    gl_FragColor = vec4(1.0);\n#endif\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nconst float PI = 3.141592653589793;\n\nattribute vec2 a_pos;\nattribute vec2 a_offset;\nattribute vec2 a_texture_pos;\nattribute vec4 a_data;\n\n\n// matrix is for the vertex position.\nuniform mat4 u_matrix;\n\nuniform mediump float u_zoom;\nuniform bool u_rotate_with_map;\nuniform bool u_pitch_with_map;\nuniform mediump float u_pitch;\nuniform mediump float u_bearing;\nuniform mediump float u_aspect_ratio;\nuniform vec2 u_extrude_scale;\n\nuniform vec2 u_texsize;\n\nvarying vec2 v_tex;\nvarying vec2 v_fade_tex;\nvarying float v_gamma_scale;\n\nvoid main() {\n    vec2 a_tex = a_texture_pos.xy;\n    mediump float a_labelminzoom = a_data[0];\n    mediump vec2 a_zoom = a_data.pq;\n    mediump float a_minzoom = a_zoom[0];\n    mediump float a_maxzoom = a_zoom[1];\n\n    // u_zoom is the current zoom level adjusted for the change in font size\n    mediump float z = 2.0 - step(a_minzoom, u_zoom) - (1.0 - step(a_maxzoom, u_zoom));\n\n    // pitch-alignment: map\n    // rotation-alignment: map | viewport\n    if (u_pitch_with_map) {\n        lowp float angle = u_rotate_with_map ? (a_data[1] / 256.0 * 2.0 * PI) : u_bearing;\n        lowp float asin = sin(angle);\n        lowp float acos = cos(angle);\n        mat2 RotationMatrix = mat2(acos, asin, -1.0 * asin, acos);\n        vec2 offset = RotationMatrix * a_offset;\n        vec2 extrude = u_extrude_scale * (offset / 64.0);\n        gl_Position = u_matrix * vec4(a_pos + extrude, 0, 1);\n        gl_Position.z += z * gl_Position.w;\n    // pitch-alignment: viewport\n    // rotation-alignment: map\n    } else if (u_rotate_with_map) {\n        // foreshortening factor to apply on pitched maps\n        // as a label goes from horizontal <=> vertical in angle\n        // it goes from 0% foreshortening to up to around 70% foreshortening\n        lowp float pitchfactor = 1.0 - cos(u_pitch * sin(u_pitch * 0.75));\n\n        lowp float lineangle = a_data[1] / 256.0 * 2.0 * PI;\n\n        // use the lineangle to position points a,b along the line\n        // project the points and calculate the label angle in projected space\n        // this calculation allows labels to be rendered unskewed on pitched maps\n        vec4 a = u_matrix * vec4(a_pos, 0, 1);\n        vec4 b = u_matrix * vec4(a_pos + vec2(cos(lineangle),sin(lineangle)), 0, 1);\n        lowp float angle = atan((b[1]/b[3] - a[1]/a[3])/u_aspect_ratio, b[0]/b[3] - a[0]/a[3]);\n        lowp float asin = sin(angle);\n        lowp float acos = cos(angle);\n        mat2 RotationMatrix = mat2(acos, -1.0 * asin, asin, acos);\n\n        vec2 offset = RotationMatrix * (vec2((1.0-pitchfactor)+(pitchfactor*cos(angle*2.0)), 1.0) * a_offset);\n        vec2 extrude = u_extrude_scale * (offset / 64.0);\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n        gl_Position.z += z * gl_Position.w;\n    // pitch-alignment: viewport\n    // rotation-alignment: viewport\n    } else {\n        vec2 extrude = u_extrude_scale * (a_offset / 64.0);\n        gl_Position = u_matrix * vec4(a_pos, 0, 1) + vec4(extrude, 0, 0);\n    }\n\n    v_gamma_scale = (gl_Position.w - 0.5);\n\n    v_tex = a_tex / u_texsize;\n    v_fade_tex = vec2(a_labelminzoom / 255.0, 0.0);\n}\n"
  },
  collisionbox: {
    fragmentSource: "#ifdef GL_ES\nprecision mediump float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nuniform float u_zoom;\nuniform float u_maxzoom;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n\n    float alpha = 0.5;\n\n    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0) * alpha;\n\n    if (v_placement_zoom > u_zoom) {\n        gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0) * alpha;\n    }\n\n    if (u_zoom >= v_max_zoom) {\n        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0) * alpha * 0.25;\n    }\n\n    if (v_placement_zoom >= u_maxzoom) {\n        gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0) * alpha * 0.2;\n    }\n}\n",
    vertexSource: "#ifdef GL_ES\nprecision highp float;\n#else\n#define lowp\n#define mediump\n#define highp\n#endif\n\nattribute vec2 a_pos;\nattribute vec2 a_extrude;\nattribute vec2 a_data;\n\nuniform mat4 u_matrix;\nuniform float u_scale;\n\nvarying float v_max_zoom;\nvarying float v_placement_zoom;\n\nvoid main() {\n    gl_Position = u_matrix * vec4(a_pos + a_extrude / u_scale, 0.0, 1.0);\n\n    v_max_zoom = a_data.x;\n    v_placement_zoom = a_data.y;\n}\n"
  }
};

module.exports.util = "float evaluate_zoom_function_1(const vec4 values, const float t) {\n    if (t < 1.0) {\n        return mix(values[0], values[1], t);\n    } else if (t < 2.0) {\n        return mix(values[1], values[2], t - 1.0);\n    } else {\n        return mix(values[2], values[3], t - 2.0);\n    }\n}\nvec4 evaluate_zoom_function_4(const vec4 value0, const vec4 value1, const vec4 value2, const vec4 value3, const float t) {\n    if (t < 1.0) {\n        return mix(value0, value1, t);\n    } else if (t < 2.0) {\n        return mix(value1, value2, t - 1.0);\n    } else {\n        return mix(value2, value3, t - 2.0);\n    }\n}\n";

},{"path":463}],280:[function(require,module,exports){
'use strict';

var format = require('util').format;

function ValidationError(key, value /*, message, ...*/) {
    this.message = (
        (key ? key + ': ' : '') +
        format.apply(format, Array.prototype.slice.call(arguments, 2))
    );

    if (value !== null && value !== undefined && value.__line__) {
        this.line = value.__line__;
    }
}

module.exports = ValidationError;

},{"util":1001}],281:[function(require,module,exports){
'use strict';

module.exports = function (output) {
    for (var i = 1; i < arguments.length; i++) {
        var input = arguments[i];
        for (var k in input) {
            output[k] = input[k];
        }
    }
    return output;
};

},{}],282:[function(require,module,exports){
'use strict';

module.exports = function getType(val) {
    if (val instanceof Number) {
        return 'number';
    } else if (val instanceof String) {
        return 'string';
    } else if (val instanceof Boolean) {
        return 'boolean';
    } else if (Array.isArray(val)) {
        return 'array';
    } else if (val === null) {
        return 'null';
    } else {
        return typeof val;
    }
};

},{}],283:[function(require,module,exports){
'use strict';

// Turn jsonlint-lines-primitives objects into primitive objects
module.exports = function unbundle(value) {
    if (value instanceof Number || value instanceof String || value instanceof Boolean) {
        return value.valueOf();
    } else {
        return value;
    }
};

},{}],284:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var getType = require('../util/get_type');
var extend = require('../util/extend');

// Main recursive validation function. Tracks:
//
// - key: string representing location of validation in style tree. Used only
//   for more informative error reporting.
// - value: current value from style being evaluated. May be anything from a
//   high level object that needs to be descended into deeper or a simple
//   scalar value.
// - valueSpec: current spec being evaluated. Tracks value.

module.exports = function validate(options) {

    var validateFunction = require('./validate_function');
    var validateObject = require('./validate_object');
    var VALIDATORS = {
        '*': function() {
            return [];
        },
        'array': require('./validate_array'),
        'boolean': require('./validate_boolean'),
        'number': require('./validate_number'),
        'color': require('./validate_color'),
        'constants': require('./validate_constants'),
        'enum': require('./validate_enum'),
        'filter': require('./validate_filter'),
        'function': require('./validate_function'),
        'layer': require('./validate_layer'),
        'object': require('./validate_object'),
        'source': require('./validate_source'),
        'string': require('./validate_string')
    };

    var value = options.value;
    var valueSpec = options.valueSpec;
    var key = options.key;
    var styleSpec = options.styleSpec;
    var style = options.style;

    if (getType(value) === 'string' && value[0] === '@') {
        if (styleSpec.$version > 7) {
            return [new ValidationError(key, value, 'constants have been deprecated as of v8')];
        }
        if (!(value in style.constants)) {
            return [new ValidationError(key, value, 'constant "%s" not found', value)];
        }
        options = extend({}, options, { value: style.constants[value] });
    }

    if (valueSpec.function && getType(value) === 'object') {
        return validateFunction(options);

    } else if (valueSpec.type && VALIDATORS[valueSpec.type]) {
        return VALIDATORS[valueSpec.type](options);

    } else {
        return validateObject(extend({}, options, {
            valueSpec: valueSpec.type ? styleSpec[valueSpec.type] : valueSpec
        }));
    }
};

},{"../error/validation_error":280,"../util/extend":281,"../util/get_type":282,"./validate_array":285,"./validate_boolean":286,"./validate_color":287,"./validate_constants":288,"./validate_enum":289,"./validate_filter":290,"./validate_function":291,"./validate_layer":293,"./validate_number":295,"./validate_object":296,"./validate_source":298,"./validate_string":299}],285:[function(require,module,exports){
'use strict';

var getType = require('../util/get_type');
var validate = require('./validate');
var ValidationError = require('../error/validation_error');

module.exports = function validateArray(options) {
    var array = options.value;
    var arraySpec = options.valueSpec;
    var style = options.style;
    var styleSpec = options.styleSpec;
    var key = options.key;
    var validateArrayElement = options.arrayElementValidator || validate;

    if (getType(array) !== 'array') {
        return [new ValidationError(key, array, 'array expected, %s found', getType(array))];
    }

    if (arraySpec.length && array.length !== arraySpec.length) {
        return [new ValidationError(key, array, 'array length %d expected, length %d found', arraySpec.length, array.length)];
    }

    if (arraySpec['min-length'] && array.length < arraySpec['min-length']) {
        return [new ValidationError(key, array, 'array length at least %d expected, length %d found', arraySpec['min-length'], array.length)];
    }

    var arrayElementSpec = {
        "type": arraySpec.value
    };

    if (styleSpec.$version < 7) {
        arrayElementSpec.function = arraySpec.function;
    }

    if (getType(arraySpec.value) === 'object') {
        arrayElementSpec = arraySpec.value;
    }

    var errors = [];
    for (var i = 0; i < array.length; i++) {
        errors = errors.concat(validateArrayElement({
            array: array,
            arrayIndex: i,
            value: array[i],
            valueSpec: arrayElementSpec,
            style: style,
            styleSpec: styleSpec,
            key: key + '[' + i + ']'
        }));
    }
    return errors;
};

},{"../error/validation_error":280,"../util/get_type":282,"./validate":284}],286:[function(require,module,exports){
'use strict';

var getType = require('../util/get_type');
var ValidationError = require('../error/validation_error');

module.exports = function validateBoolean(options) {
    var value = options.value;
    var key = options.key;
    var type = getType(value);

    if (type !== 'boolean') {
        return [new ValidationError(key, value, 'boolean expected, %s found', type)];
    }

    return [];
};

},{"../error/validation_error":280,"../util/get_type":282}],287:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var getType = require('../util/get_type');
var parseCSSColor = require('csscolorparser').parseCSSColor;

module.exports = function validateColor(options) {
    var key = options.key;
    var value = options.value;
    var type = getType(value);

    if (type !== 'string') {
        return [new ValidationError(key, value, 'color expected, %s found', type)];
    }

    if (parseCSSColor(value) === null) {
        return [new ValidationError(key, value, 'color expected, "%s" found', value)];
    }

    return [];
};

},{"../error/validation_error":280,"../util/get_type":282,"csscolorparser":80}],288:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var getType = require('../util/get_type');

module.exports = function validateConstants(options) {
    var key = options.key;
    var constants = options.value;
    var styleSpec = options.styleSpec;

    if (styleSpec.$version > 7) {
        if (constants) {
            return [new ValidationError(key, constants, 'constants have been deprecated as of v8')];
        } else {
            return [];
        }
    } else {
        var type = getType(constants);
        if (type !== 'object') {
            return [new ValidationError(key, constants, 'object expected, %s found', type)];
        }

        var errors = [];
        for (var constantName in constants) {
            if (constantName[0] !== '@') {
                errors.push(new ValidationError(key + '.' + constantName, constants[constantName], 'constants must start with "@"'));
            }
        }
        return errors;
    }

};

},{"../error/validation_error":280,"../util/get_type":282}],289:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var unbundle = require('../util/unbundle_jsonlint');

module.exports = function validateEnum(options) {
    var key = options.key;
    var value = options.value;
    var valueSpec = options.valueSpec;
    var errors = [];

    if (valueSpec.values.indexOf(unbundle(value)) === -1) {
        errors.push(new ValidationError(key, value, 'expected one of [%s], %s found', valueSpec.values.join(', '), value));
    }
    return errors;
};

},{"../error/validation_error":280,"../util/unbundle_jsonlint":283}],290:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var validateEnum = require('./validate_enum');
var getType = require('../util/get_type');
var unbundle = require('../util/unbundle_jsonlint');

module.exports = function validateFilter(options) {
    var value = options.value;
    var key = options.key;
    var styleSpec = options.styleSpec;
    var type;

    var errors = [];

    if (getType(value) !== 'array') {
        return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
    }

    if (value.length < 1) {
        return [new ValidationError(key, value, 'filter array must have at least 1 element')];
    }

    errors = errors.concat(validateEnum({
        key: key + '[0]',
        value: value[0],
        valueSpec: styleSpec.filter_operator,
        style: options.style,
        styleSpec: options.styleSpec
    }));

    switch (unbundle(value[0])) {
        case '<':
        case '<=':
        case '>':
        case '>=':
            if (value.length >= 2 && value[1] == '$type') {
                errors.push(new ValidationError(key, value, '"$type" cannot be use with operator "%s"', value[0]));
            }
        /* falls through */
        case '==':
        case '!=':
            if (value.length != 3) {
                errors.push(new ValidationError(key, value, 'filter array for operator "%s" must have 3 elements', value[0]));
            }
        /* falls through */
        case 'in':
        case '!in':
            if (value.length >= 2) {
                type = getType(value[1]);
                if (type !== 'string') {
                    errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
                } else if (value[1][0] === '@') {
                    errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
                }
            }
            for (var i = 2; i < value.length; i++) {
                type = getType(value[i]);
                if (value[1] == '$type') {
                    errors = errors.concat(validateEnum({
                        key: key + '[' + i + ']',
                        value: value[i],
                        valueSpec: styleSpec.geometry_type,
                        style: options.style,
                        styleSpec: options.styleSpec
                    }));
                } else if (type === 'string' && value[i][0] === '@') {
                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'filter value cannot be a constant'));
                } else if (type !== 'string' && type !== 'number' && type !== 'boolean') {
                    errors.push(new ValidationError(key + '[' + i + ']', value[i], 'string, number, or boolean expected, %s found', type));
                }
            }
            break;

        case 'any':
        case 'all':
        case 'none':
            for (i = 1; i < value.length; i++) {
                errors = errors.concat(validateFilter({
                    key: key + '[' + i + ']',
                    value: value[i],
                    style: options.style,
                    styleSpec: options.styleSpec
                }));
            }
            break;

        case 'has':
        case '!has':
            type = getType(value[1]);
            if (value.length !== 2) {
                errors.push(new ValidationError(key, value, 'filter array for "%s" operator must have 2 elements', value[0]));
            } else if (type !== 'string') {
                errors.push(new ValidationError(key + '[1]', value[1], 'string expected, %s found', type));
            } else if (value[1][0] === '@') {
                errors.push(new ValidationError(key + '[1]', value[1], 'filter key cannot be a constant'));
            }
            break;

    }

    return errors;
};

},{"../error/validation_error":280,"../util/get_type":282,"../util/unbundle_jsonlint":283,"./validate_enum":289}],291:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var getType = require('../util/get_type');
var validate = require('./validate');
var validateObject = require('./validate_object');
var validateArray = require('./validate_array');
var validateNumber = require('./validate_number');

module.exports = function validateFunction(options) {
    var functionValueSpec = options.valueSpec;
    var stopKeyType;

    var isPropertyFunction = options.value.property !== undefined || stopKeyType === 'object';
    var isZoomFunction = options.value.property === undefined || stopKeyType === 'object';

    var errors = validateObject({
        key: options.key,
        value: options.value,
        valueSpec: options.styleSpec.function,
        style: options.style,
        styleSpec: options.styleSpec,
        objectElementValidators: { stops: validateFunctionStops }
    });

    if (options.styleSpec.$version >= 8) {
       if (isPropertyFunction && !options.valueSpec['property-function']) {
           errors.push(new ValidationError(options.key, options.value, 'property functions not supported'));
       } else if (isZoomFunction && !options.valueSpec['zoom-function']) {
           errors.push(new ValidationError(options.key, options.value, 'zoom functions not supported'));
       }
    }

    return errors;

    function validateFunctionStops(options) {
        var errors = [];
        var value = options.value;

        errors = errors.concat(validateArray({
            key: options.key,
            value: value,
            valueSpec: options.valueSpec,
            style: options.style,
            styleSpec: options.styleSpec,
            arrayElementValidator: validateFunctionStop
        }));

        if (getType(value) === 'array' && value.length === 0) {
            errors.push(new ValidationError(options.key, value, 'array must have at least one stop'));
        }

        return errors;
    }

    function validateFunctionStop(options) {
        var errors = [];
        var value = options.value;
        var key = options.key;

        if (getType(value) !== 'array') {
            return [new ValidationError(key, value, 'array expected, %s found', getType(value))];
        }

        if (value.length !== 2) {
            return [new ValidationError(key, value, 'array length %d expected, length %d found', 2, value.length)];
        }

        var type = getType(value[0]);
        if (!stopKeyType) stopKeyType = type;
        if (type !== stopKeyType) {
            return [new ValidationError(key, value, '%s stop key type must match previous stop key type %s', type, stopKeyType)];
        }

        if (type === 'object') {
            if (value[0].zoom === undefined) {
                return [new ValidationError(key, value, 'object stop key must have zoom')];
            }
            if (value[0].value === undefined) {
                return [new ValidationError(key, value, 'object stop key must have value')];
            }
            errors = errors.concat(validateObject({
                key: key + '[0]',
                value: value[0],
                valueSpec: { zoom: {} },
                style: options.style,
                styleSpec: options.styleSpec,
                objectElementValidators: { zoom: validateNumber, value: validateValue }
            }));
        } else {
            errors = errors.concat((isZoomFunction ? validateNumber : validateValue)({
                key: key + '[0]',
                value: value[0],
                valueSpec: {},
                style: options.style,
                styleSpec: options.styleSpec
            }));
        }

        errors = errors.concat(validate({
            key: key + '[1]',
            value: value[1],
            valueSpec: functionValueSpec,
            style: options.style,
            styleSpec: options.styleSpec
        }));

        if (getType(value[0]) === 'number') {
            if (functionValueSpec.function === 'piecewise-constant' && value[0] % 1 !== 0) {
                errors.push(new ValidationError(key + '[0]', value[0], 'zoom level for piecewise-constant functions must be an integer'));
            }

            if (options.arrayIndex !== 0) {
                if (value[0] < options.array[options.arrayIndex - 1][0]) {
                    errors.push(new ValidationError(key + '[0]', value[0], 'array stops must appear in ascending order'));
                }
            }
        }

        return errors;
    }

    function validateValue(options) {
        var errors = [];
        var type = getType(options.value);
        if (type !== 'number' && type !== 'string' && type !== 'array') {
            errors.push(new ValidationError(options.key, options.value, 'property value must be a number, string or array'));
        }
        return errors;
    }

};

},{"../error/validation_error":280,"../util/get_type":282,"./validate":284,"./validate_array":285,"./validate_number":295,"./validate_object":296}],292:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var validateString = require('./validate_string');

module.exports = function(options) {
    var value = options.value;
    var key = options.key;

    var errors = validateString(options);
    if (errors.length) return errors;

    if (value.indexOf('{fontstack}') === -1) {
        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{fontstack}" token'));
    }

    if (value.indexOf('{range}') === -1) {
        errors.push(new ValidationError(key, value, '"glyphs" url must include a "{range}" token'));
    }

    return errors;
};

},{"../error/validation_error":280,"./validate_string":299}],293:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var unbundle = require('../util/unbundle_jsonlint');
var validateObject = require('./validate_object');
var validateFilter = require('./validate_filter');
var validatePaintProperty = require('./validate_paint_property');
var validateLayoutProperty = require('./validate_layout_property');
var extend = require('../util/extend');

module.exports = function validateLayer(options) {
    var errors = [];

    var layer = options.value;
    var key = options.key;
    var style = options.style;
    var styleSpec = options.styleSpec;

    if (!layer.type && !layer.ref) {
        errors.push(new ValidationError(key, layer, 'either "type" or "ref" is required'));
    }
    var type = unbundle(layer.type);
    var ref = unbundle(layer.ref);

    if (layer.id) {
        for (var i = 0; i < options.arrayIndex; i++) {
            var otherLayer = style.layers[i];
            if (unbundle(otherLayer.id) === unbundle(layer.id)) {
                errors.push(new ValidationError(key, layer.id, 'duplicate layer id "%s", previously used at line %d', layer.id, otherLayer.id.__line__));
            }
        }
    }

    if ('ref' in layer) {
        ['type', 'source', 'source-layer', 'filter', 'layout'].forEach(function (p) {
            if (p in layer) {
                errors.push(new ValidationError(key, layer[p], '"%s" is prohibited for ref layers', p));
            }
        });

        var parent;

        style.layers.forEach(function(layer) {
            if (layer.id == ref) parent = layer;
        });

        if (!parent) {
            errors.push(new ValidationError(key, layer.ref, 'ref layer "%s" not found', ref));
        } else if (parent.ref) {
            errors.push(new ValidationError(key, layer.ref, 'ref cannot reference another ref layer'));
        } else {
            type = unbundle(parent.type);
        }
    } else if (type !== 'background') {
        if (!layer.source) {
            errors.push(new ValidationError(key, layer, 'missing required property "source"'));
        } else {
            var source = style.sources && style.sources[layer.source];
            if (!source) {
                errors.push(new ValidationError(key, layer.source, 'source "%s" not found', layer.source));
            } else if (source.type == 'vector' && type == 'raster') {
                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a raster source', layer.id));
            } else if (source.type == 'raster' && type != 'raster') {
                errors.push(new ValidationError(key, layer.source, 'layer "%s" requires a vector source', layer.id));
            } else if (source.type == 'vector' && !layer['source-layer']) {
                errors.push(new ValidationError(key, layer, 'layer "%s" must specify a "source-layer"', layer.id));
            }
        }
    }

    errors = errors.concat(validateObject({
        key: key,
        value: layer,
        valueSpec: styleSpec.layer,
        style: options.style,
        styleSpec: options.styleSpec,
        objectElementValidators: {
            filter: validateFilter,
            layout: function(options) {
                return validateObject({
                    layer: layer,
                    key: options.key,
                    value: options.value,
                    style: options.style,
                    styleSpec: options.styleSpec,
                    objectElementValidators: {
                        '*': function(options) {
                            return validateLayoutProperty(extend({layerType: type}, options));
                        }
                    }
                });
            },
            paint: function(options) {
                return validateObject({
                    layer: layer,
                    key: options.key,
                    value: options.value,
                    style: options.style,
                    styleSpec: options.styleSpec,
                    objectElementValidators: {
                        '*': function(options) {
                            return validatePaintProperty(extend({layerType: type}, options));
                        }
                    }
                });
            }
        }
    }));

    return errors;
};

},{"../error/validation_error":280,"../util/extend":281,"../util/unbundle_jsonlint":283,"./validate_filter":290,"./validate_layout_property":294,"./validate_object":296,"./validate_paint_property":297}],294:[function(require,module,exports){
'use strict';

var validate = require('./validate');
var ValidationError = require('../error/validation_error');

module.exports = function validateLayoutProperty(options) {
    var key = options.key;
    var style = options.style;
    var styleSpec = options.styleSpec;
    var value = options.value;
    var propertyKey = options.objectKey;
    var layerSpec = styleSpec['layout_' + options.layerType];

    if (options.valueSpec || layerSpec[propertyKey]) {
        var errors = [];

        if (options.layerType === 'symbol') {
            if (propertyKey === 'icon-image' && style && !style.sprite) {
                errors.push(new ValidationError(key, value, 'use of "icon-image" requires a style "sprite" property'));
            } else if (propertyKey === 'text-field' && style && !style.glyphs) {
                errors.push(new ValidationError(key, value, 'use of "text-field" requires a style "glyphs" property'));
            }
        }

        return errors.concat(validate({
            key: options.key,
            value: value,
            valueSpec: options.valueSpec || layerSpec[propertyKey],
            style: style,
            styleSpec: styleSpec
        }));

    } else {
        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
    }

};

},{"../error/validation_error":280,"./validate":284}],295:[function(require,module,exports){
'use strict';

var getType = require('../util/get_type');
var ValidationError = require('../error/validation_error');

module.exports = function validateNumber(options) {
    var key = options.key;
    var value = options.value;
    var valueSpec = options.valueSpec;
    var type = getType(value);

    if (type !== 'number') {
        return [new ValidationError(key, value, 'number expected, %s found', type)];
    }

    if ('minimum' in valueSpec && value < valueSpec.minimum) {
        return [new ValidationError(key, value, '%s is less than the minimum value %s', value, valueSpec.minimum)];
    }

    if ('maximum' in valueSpec && value > valueSpec.maximum) {
        return [new ValidationError(key, value, '%s is greater than the maximum value %s', value, valueSpec.maximum)];
    }

    return [];
};

},{"../error/validation_error":280,"../util/get_type":282}],296:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var getType = require('../util/get_type');
var validate = require('./validate');

module.exports = function validateObject(options) {
    var key = options.key;
    var object = options.value;
    var valueSpec = options.valueSpec;
    var objectElementValidators = options.objectElementValidators || {};
    var style = options.style;
    var styleSpec = options.styleSpec;
    var errors = [];

    var type = getType(object);
    if (type !== 'object') {
        return [new ValidationError(key, object, 'object expected, %s found', type)];
    }

    for (var objectKey in object) {
        var valueSpecKey = objectKey.split('.')[0]; // treat 'paint.*' as 'paint'
        var objectElementSpec = valueSpec && (valueSpec[valueSpecKey] || valueSpec['*']);
        var objectElementValidator = objectElementValidators[valueSpecKey] || objectElementValidators['*'];

        if (objectElementSpec || objectElementValidator) {
            errors = errors.concat((objectElementValidator || validate)({
                key: (key ? key + '.' : key) + objectKey,
                value: object[objectKey],
                valueSpec: objectElementSpec,
                style: style,
                styleSpec: styleSpec,
                object: object,
                objectKey: objectKey
            }));

        // tolerate root-level extra keys & arbitrary layer properties
        // TODO remove this layer-specific logic
        } else if (key !== '' && key.split('.').length !== 1) {
            errors.push(new ValidationError(key, object[objectKey], 'unknown property "%s"', objectKey));
        }
    }

    for (valueSpecKey in valueSpec) {
        if (valueSpec[valueSpecKey].required && valueSpec[valueSpecKey]['default'] === undefined && object[valueSpecKey] === undefined) {
            errors.push(new ValidationError(key, object, 'missing required property "%s"', valueSpecKey));
        }
    }

    return errors;
};

},{"../error/validation_error":280,"../util/get_type":282,"./validate":284}],297:[function(require,module,exports){
'use strict';

var validate = require('./validate');
var ValidationError = require('../error/validation_error');

module.exports = function validatePaintProperty(options) {
    var key = options.key;
    var style = options.style;
    var styleSpec = options.styleSpec;
    var value = options.value;
    var propertyKey = options.objectKey;
    var layerSpec = styleSpec['paint_' + options.layerType];

    var transitionMatch = propertyKey.match(/^(.*)-transition$/);

    if (transitionMatch && layerSpec[transitionMatch[1]] && layerSpec[transitionMatch[1]].transition) {
        return validate({
            key: key,
            value: value,
            valueSpec: styleSpec.transition,
            style: style,
            styleSpec: styleSpec
        });

    } else if (options.valueSpec || layerSpec[propertyKey]) {
        return validate({
            key: options.key,
            value: value,
            valueSpec: options.valueSpec || layerSpec[propertyKey],
            style: style,
            styleSpec: styleSpec
        });

    } else {
        return [new ValidationError(key, value, 'unknown property "%s"', propertyKey)];
    }

};

},{"../error/validation_error":280,"./validate":284}],298:[function(require,module,exports){
'use strict';

var ValidationError = require('../error/validation_error');
var unbundle = require('../util/unbundle_jsonlint');
var validateObject = require('./validate_object');
var validateEnum = require('./validate_enum');

module.exports = function validateSource(options) {
    var value = options.value;
    var key = options.key;
    var styleSpec = options.styleSpec;
    var style = options.style;

    if (!value.type) {
        return [new ValidationError(key, value, '"type" is required')];
    }

    var type = unbundle(value.type);
    switch (type) {
        case 'vector':
        case 'raster':
            var errors = [];
            errors = errors.concat(validateObject({
                key: key,
                value: value,
                valueSpec: styleSpec.source_tile,
                style: options.style,
                styleSpec: styleSpec
            }));
            if ('url' in value) {
                for (var prop in value) {
                    if (['type', 'url', 'tileSize'].indexOf(prop) < 0) {
                        errors.push(new ValidationError(key + '.' + prop, value[prop], 'a source with a "url" property may not include a "%s" property', prop));
                    }
                }
            }
            return errors;

        case 'geojson':
            return validateObject({
                key: key,
                value: value,
                valueSpec: styleSpec.source_geojson,
                style: style,
                styleSpec: styleSpec
            });

        case 'video':
            return validateObject({
                key: key,
                value: value,
                valueSpec: styleSpec.source_video,
                style: style,
                styleSpec: styleSpec
            });

        case 'image':
            return validateObject({
                key: key,
                value: value,
                valueSpec: styleSpec.source_image,
                style: style,
                styleSpec: styleSpec
            });

        default:
            return validateEnum({
                key: key + '.type',
                value: value.type,
                valueSpec: {values: ['vector', 'raster', 'geojson', 'video', 'image']},
                style: style,
                styleSpec: styleSpec
            });
    }
};

},{"../error/validation_error":280,"../util/unbundle_jsonlint":283,"./validate_enum":289,"./validate_object":296}],299:[function(require,module,exports){
'use strict';

var getType = require('../util/get_type');
var ValidationError = require('../error/validation_error');

module.exports = function validateString(options) {
    var value = options.value;
    var key = options.key;
    var type = getType(value);

    if (type !== 'string') {
        return [new ValidationError(key, value, 'string expected, %s found', type)];
    }

    return [];
};

},{"../error/validation_error":280,"../util/get_type":282}],300:[function(require,module,exports){
'use strict';

var validateConstants = require('./validate/validate_constants');
var validate = require('./validate/validate');
var latestStyleSpec = require('../reference/latest.min');
var validateGlyphsURL = require('./validate/validate_glyphs_url');

/**
 * Validate a Mapbox GL style against the style specification. This entrypoint,
 * `mapbox-gl-style-spec/lib/validate_style.min`, is designed to produce as
 * small a browserify bundle as possible by omitting unnecessary functionality
 * and legacy style specifications.
 *
 * @param {Object} style The style to be validated.
 * @param {Object} [styleSpec] The style specification to validate against.
 *     If omitted, the latest style spec is used.
 * @returns {Array<ValidationError>}
 * @example
 *   var validate = require('mapbox-gl-style-spec/lib/validate_style.min');
 *   var errors = validate(style);
 */
function validateStyleMin(style, styleSpec) {
    styleSpec = styleSpec || latestStyleSpec;

    var errors = [];

    errors = errors.concat(validate({
        key: '',
        value: style,
        valueSpec: styleSpec.$root,
        styleSpec: styleSpec,
        style: style,
        objectElementValidators: {
            glyphs: validateGlyphsURL
        }
    }));

    if (styleSpec.$version > 7 && style.constants) {
        errors = errors.concat(validateConstants({
            key: 'constants',
            value: style.constants,
            style: style,
            styleSpec: styleSpec
        }));
    }

    return sortErrors(errors);
}

validateStyleMin.source = wrapCleanErrors(require('./validate/validate_source'));
validateStyleMin.layer = wrapCleanErrors(require('./validate/validate_layer'));
validateStyleMin.filter = wrapCleanErrors(require('./validate/validate_filter'));
validateStyleMin.paintProperty = wrapCleanErrors(require('./validate/validate_paint_property'));
validateStyleMin.layoutProperty = wrapCleanErrors(require('./validate/validate_layout_property'));

function sortErrors(errors) {
    return [].concat(errors).sort(function (a, b) {
        return a.line - b.line;
    });
}

function wrapCleanErrors(inner) {
    return function() {
        return sortErrors(inner.apply(this, arguments));
    };
}

module.exports = validateStyleMin;

},{"../reference/latest.min":301,"./validate/validate":284,"./validate/validate_constants":288,"./validate/validate_filter":290,"./validate/validate_glyphs_url":292,"./validate/validate_layer":293,"./validate/validate_layout_property":294,"./validate/validate_paint_property":297,"./validate/validate_source":298}],301:[function(require,module,exports){
module.exports = require('./v8.min.json');

},{"./v8.min.json":302}],302:[function(require,module,exports){
module.exports={"$version":8,"$root":{"version":{"required":true,"type":"enum","values":[8]},"name":{"type":"string"},"metadata":{"type":"*"},"center":{"type":"array","value":"number"},"zoom":{"type":"number"},"bearing":{"type":"number","default":0,"period":360,"units":"degrees"},"pitch":{"type":"number","default":0,"units":"degrees"},"sources":{"required":true,"type":"sources"},"sprite":{"type":"string"},"glyphs":{"type":"string"},"transition":{"type":"transition"},"layers":{"required":true,"type":"array","value":"layer"}},"sources":{"*":{"type":"source"}},"source":["source_tile","source_geojson","source_video","source_image"],"source_tile":{"type":{"required":true,"type":"enum","values":["vector","raster"]},"url":{"type":"string"},"tiles":{"type":"array","value":"string"},"minzoom":{"type":"number","default":0},"maxzoom":{"type":"number","default":22},"tileSize":{"type":"number","default":512,"units":"pixels"},"*":{"type":"*"}},"source_geojson":{"type":{"required":true,"type":"enum","values":["geojson"]},"data":{"type":"*"},"maxzoom":{"type":"number","default":14},"buffer":{"type":"number","default":64},"tolerance":{"type":"number","default":3},"cluster":{"type":"boolean","default":false},"clusterRadius":{"type":"number","default":400},"clusterMaxZoom":{"type":"number"}},"source_video":{"type":{"required":true,"type":"enum","values":["video"]},"urls":{"required":true,"type":"array","value":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"source_image":{"type":{"required":true,"type":"enum","values":["image"]},"url":{"required":true,"type":"string"},"coordinates":{"required":true,"type":"array","length":4,"value":{"type":"array","length":2,"value":"number"}}},"layer":{"id":{"type":"string","required":true},"type":{"type":"enum","values":["fill","line","symbol","circle","raster","background"]},"metadata":{"type":"*"},"ref":{"type":"string"},"source":{"type":"string"},"source-layer":{"type":"string"},"minzoom":{"type":"number","minimum":0,"maximum":22},"maxzoom":{"type":"number","minimum":0,"maximum":22},"interactive":{"type":"boolean","default":false},"filter":{"type":"filter"},"layout":{"type":"layout"},"paint":{"type":"paint"},"paint.*":{"type":"paint"}},"layout":["layout_fill","layout_line","layout_circle","layout_symbol","layout_raster","layout_background"],"layout_background":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_fill":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_circle":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_line":{"line-cap":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["butt","round","square"],"default":"butt"},"line-join":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["bevel","round","miter"],"default":"miter"},"line-miter-limit":{"type":"number","default":2,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"miter"}]},"line-round-limit":{"type":"number","default":1.05,"function":"interpolated","zoom-function":true,"property-function":true,"requires":[{"line-join":"round"}]},"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_symbol":{"symbol-placement":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["point","line"],"default":"point"},"symbol-spacing":{"type":"number","default":250,"minimum":1,"function":"interpolated","zoom-function":true,"property-function":true,"units":"pixels","requires":[{"symbol-placement":"line"}]},"symbol-avoid-edges":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false},"icon-allow-overlap":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-ignore-placement":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image"]},"icon-optional":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image","text-field"]},"icon-rotation-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"viewport","requires":["icon-image"]},"icon-size":{"type":"number","default":1,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image"]},"icon-text-fit":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":false,"values":["none","both","width","height"],"default":"none","requires":["icon-image","text-field"]},"icon-text-fit-padding":{"type":"array","value":"number","length":4,"default":[0,0,0,0],"units":"pixels","function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image","icon-text-fit","text-field"]},"icon-image":{"type":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"tokens":true},"icon-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","zoom-function":true,"property-function":true,"units":"degrees","requires":["icon-image"]},"icon-padding":{"type":"number","default":2,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"units":"pixels","requires":["icon-image"]},"icon-keep-upright":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["icon-image",{"icon-rotation-alignment":"map"},{"symbol-placement":"line"}]},"icon-offset":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"requires":["icon-image"]},"text-pitch-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"requires":["text-field"]},"text-rotation-alignment":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"viewport","requires":["text-field"]},"text-field":{"type":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":"","tokens":true},"text-font":{"type":"array","value":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":["Open Sans Regular","Arial Unicode MS Regular"],"requires":["text-field"]},"text-size":{"type":"number","default":16,"minimum":0,"units":"pixels","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field"]},"text-max-width":{"type":"number","default":10,"minimum":0,"units":"em","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field"]},"text-line-height":{"type":"number","default":1.2,"units":"em","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field"]},"text-letter-spacing":{"type":"number","default":0,"units":"em","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field"]},"text-justify":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["left","center","right"],"default":"center","requires":["text-field"]},"text-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["center","left","right","top","bottom","top-left","top-right","bottom-left","bottom-right"],"default":"center","requires":["text-field"]},"text-max-angle":{"type":"number","default":45,"units":"degrees","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field",{"symbol-placement":"line"}]},"text-rotate":{"type":"number","default":0,"period":360,"units":"degrees","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field"]},"text-padding":{"type":"number","default":2,"minimum":0,"units":"pixels","function":"interpolated","zoom-function":true,"property-function":true,"requires":["text-field"]},"text-keep-upright":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":true,"requires":["text-field",{"text-rotation-alignment":"map"},{"symbol-placement":"line"}]},"text-transform":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["none","uppercase","lowercase"],"default":"none","requires":["text-field"]},"text-offset":{"type":"array","value":"number","units":"ems","function":"interpolated","zoom-function":true,"property-function":true,"length":2,"default":[0,0],"requires":["text-field"]},"text-allow-overlap":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["text-field"]},"text-ignore-placement":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["text-field"]},"text-optional":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":false,"requires":["text-field","icon-image"]},"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"layout_raster":{"visibility":{"type":"enum","function":"piecewise-constant","zoom-function":true,"values":["visible","none"],"default":"visible"}},"filter":{"type":"array","value":"*"},"filter_operator":{"type":"enum","values":["==","!=",">",">=","<","<=","in","!in","all","any","none","has","!has"]},"geometry_type":{"type":"enum","values":["Point","LineString","Polygon"]},"color_operation":{"type":"enum","values":["lighten","saturate","spin","fade","mix"]},"function":{"stops":{"type":"array","required":true,"value":"function_stop"},"base":{"type":"number","default":1,"minimum":0},"property":{"type":"string","default":"$zoom"},"type":{"type":"enum","values":["exponential","interval","categorical"],"default":"exponential"}},"function_stop":{"type":"array","minimum":0,"maximum":22,"value":["number","color"],"length":2},"paint":["paint_fill","paint_line","paint_circle","paint_symbol","paint_raster","paint_background"],"paint_fill":{"fill-antialias":{"type":"boolean","function":"piecewise-constant","zoom-function":true,"property-function":true,"default":true},"fill-opacity":{"type":"number","function":"interpolated","zoom-function":true,"property-function":true,"default":1,"minimum":0,"maximum":1,"transition":true},"fill-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":[{"!":"fill-pattern"}]},"fill-outline-color":{"type":"color","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":[{"!":"fill-pattern"},{"fill-antialias":true}]},"fill-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"fill-translate-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map","requires":["fill-translate"]},"fill-pattern":{"type":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"transition":true}},"paint_line":{"line-opacity":{"type":"number","function":"interpolated","zoom-function":true,"property-function":true,"default":1,"minimum":0,"maximum":1,"transition":true},"line-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":[{"!":"line-pattern"}]},"line-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-translate-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map","requires":["line-translate"]},"line-width":{"type":"number","default":1,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-gap-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-offset":{"type":"number","default":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"line-dasharray":{"type":"array","value":"number","function":"piecewise-constant","zoom-function":true,"property-function":true,"minimum":0,"transition":true,"units":"line widths","requires":[{"!":"line-pattern"}]},"line-pattern":{"type":"string","function":"piecewise-constant","zoom-function":true,"property-function":true,"transition":true}},"paint_circle":{"circle-radius":{"type":"number","default":5,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"circle-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"property-function":true,"transition":true},"circle-blur":{"type":"number","default":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true},"circle-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true},"circle-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels"},"circle-translate-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map","requires":["circle-translate"]},"circle-pitch-scale":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map"}},"paint_symbol":{"icon-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":["icon-image"]},"icon-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":["icon-image"]},"icon-halo-color":{"type":"color","default":"rgba(0, 0, 0, 0)","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":["icon-image"]},"icon-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels","requires":["icon-image"]},"icon-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels","requires":["icon-image"]},"icon-translate-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map","requires":["icon-image","icon-translate"]},"text-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":["text-field"]},"text-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":["text-field"]},"text-halo-color":{"type":"color","default":"rgba(0, 0, 0, 0)","function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"requires":["text-field"]},"text-halo-width":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels","requires":["text-field"]},"text-halo-blur":{"type":"number","default":0,"minimum":0,"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels","requires":["text-field"]},"text-translate":{"type":"array","value":"number","length":2,"default":[0,0],"function":"interpolated","zoom-function":true,"property-function":true,"transition":true,"units":"pixels","requires":["text-field"]},"text-translate-anchor":{"type":"enum","function":"piecewise-constant","zoom-function":true,"property-function":true,"values":["map","viewport"],"default":"map","requires":["text-field","text-translate"]}},"paint_raster":{"raster-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","zoom-function":true,"transition":true},"raster-hue-rotate":{"type":"number","default":0,"period":360,"function":"interpolated","zoom-function":true,"transition":true,"units":"degrees"},"raster-brightness-min":{"type":"number","function":"interpolated","zoom-function":true,"default":0,"minimum":0,"maximum":1,"transition":true},"raster-brightness-max":{"type":"number","function":"interpolated","zoom-function":true,"default":1,"minimum":0,"maximum":1,"transition":true},"raster-saturation":{"type":"number","default":0,"minimum":-1,"maximum":1,"function":"interpolated","zoom-function":true,"transition":true},"raster-contrast":{"type":"number","default":0,"minimum":-1,"maximum":1,"function":"interpolated","zoom-function":true,"transition":true},"raster-fade-duration":{"type":"number","default":300,"minimum":0,"function":"interpolated","zoom-function":true,"transition":true,"units":"milliseconds"}},"paint_background":{"background-color":{"type":"color","default":"#000000","function":"interpolated","zoom-function":true,"transition":true,"requires":[{"!":"background-pattern"}]},"background-pattern":{"type":"string","function":"piecewise-constant","zoom-function":true,"transition":true},"background-opacity":{"type":"number","default":1,"minimum":0,"maximum":1,"function":"interpolated","zoom-function":true,"transition":true}},"transition":{"duration":{"type":"number","default":300,"minimum":0,"units":"milliseconds"},"delay":{"type":"number","default":0,"minimum":0,"units":"milliseconds"}}}
},{}],303:[function(require,module,exports){
'use strict';

if (typeof module !== 'undefined' && module.exports) {
    module.exports = isSupported;
} else if (window) {
    window.mapboxgl = window.mapboxgl || {};
    window.mapboxgl.supported = isSupported;
}

/**
 * Test whether the current browser supports Mapbox GL JS
 * @param {Object} options
 * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
 *   if the performance of Mapbox GL JS would be dramatically worse than
 *   expected (i.e. a software renderer is would be used)
 * @return {boolean}
 */
function isSupported(options) {
    return !!(
        isBrowser() &&
        isArraySupported() &&
        isFunctionSupported() &&
        isObjectSupported() &&
        isJSONSupported() &&
        isWorkerSupported() &&
        isUint8ClampedArraySupported() &&
        isWebGLSupportedCached(options && options.failIfMajorPerformanceCaveat)
    );
}

function isBrowser() {
    return typeof window !== 'undefined' && typeof document !== 'undefined';
}

function isArraySupported() {
    return (
        Array.prototype &&
        Array.prototype.every &&
        Array.prototype.filter &&
        Array.prototype.forEach &&
        Array.prototype.indexOf &&
        Array.prototype.lastIndexOf &&
        Array.prototype.map &&
        Array.prototype.some &&
        Array.prototype.reduce &&
        Array.prototype.reduceRight &&
        Array.isArray
    );
}

function isFunctionSupported() {
    return Function.prototype && Function.prototype.bind;
}

function isObjectSupported() {
    return (
        Object.keys &&
        Object.create &&
        Object.getPrototypeOf &&
        Object.getOwnPropertyNames &&
        Object.isSealed &&
        Object.isFrozen &&
        Object.isExtensible &&
        Object.getOwnPropertyDescriptor &&
        Object.defineProperty &&
        Object.defineProperties &&
        Object.seal &&
        Object.freeze &&
        Object.preventExtensions
    );
}

function isJSONSupported() {
    return 'JSON' in window && 'parse' in JSON && 'stringify' in JSON;
}

function isWorkerSupported() {
    return 'Worker' in window;
}

// IE11 only supports `Uint8ClampedArray` as of version
// [KB2929437](https://support.microsoft.com/en-us/kb/2929437)
function isUint8ClampedArraySupported() {
    return 'Uint8ClampedArray' in window;
}

var isWebGLSupportedCache = {};
function isWebGLSupportedCached(failIfMajorPerformanceCaveat) {

    if (isWebGLSupportedCache[failIfMajorPerformanceCaveat] === undefined) {
        isWebGLSupportedCache[failIfMajorPerformanceCaveat] = isWebGLSupported(failIfMajorPerformanceCaveat);
    }

    return isWebGLSupportedCache[failIfMajorPerformanceCaveat];
}

isSupported.webGLContextAttributes = {
    antialias: false,
    alpha: true,
    stencil: true,
    depth: true
};

function isWebGLSupported(failIfMajorPerformanceCaveat) {

    var canvas = document.createElement('canvas');

    var attributes = Object.create(isSupported.webGLContextAttributes);
    attributes.failIfMajorPerformanceCaveat = failIfMajorPerformanceCaveat;

    if (canvas.probablySupportsContext) {
        return (
            canvas.probablySupportsContext('webgl', attributes) ||
            canvas.probablySupportsContext('experimental-webgl', attributes)
        );

    } else if (canvas.supportsContext) {
        return (
            canvas.supportsContext('webgl', attributes) ||
            canvas.supportsContext('experimental-webgl', attributes)
        );

    } else {
        return (
            canvas.getContext('webgl', attributes) ||
            canvas.getContext('experimental-webgl', attributes)
        );
    }
}

},{}],304:[function(require,module,exports){
'use strict';

var util = require('../util/util');

module.exports = ArrayGroup;

/**
 * A class that manages vertex and element arrays for a range of features. It handles initialization,
 * serialization for transfer to the main thread, and certain intervening mutations.
 *
 * Array elements are broken into array groups based on inherent limits of WebGL. Within a group is:
 *
 * * A "layout" vertex array, with fixed layout, containing values calculated from layout properties.
 * * Zero, one, or two element arrays, with fixed layout, typically for eventual use in
 *   `gl.drawElements(gl.TRIANGLES, ...)`.
 * * Zero or more "paint" vertex arrays keyed by layer ID, each with a dynamic layout which depends
 *   on which paint properties of that layer use data-driven-functions (property functions or
 *   property-and-zoom functions). Values are calculated by evaluating those functions.
 *
 * @private
 */
function ArrayGroup(arrayTypes) {
    var LayoutVertexArrayType = arrayTypes.layoutVertexArrayType;
    this.layoutVertexArray = new LayoutVertexArrayType();

    var ElementArrayType = arrayTypes.elementArrayType;
    if (ElementArrayType) this.elementArray = new ElementArrayType();

    var ElementArrayType2 = arrayTypes.elementArrayType2;
    if (ElementArrayType2) this.elementArray2 = new ElementArrayType2();

    this.paintVertexArrays = util.mapObject(arrayTypes.paintVertexArrayTypes, function (PaintVertexArrayType) {
        return new PaintVertexArrayType();
    });
}

/**
 * The maximum size of a vertex array. This limit is imposed by WebGL's 16 bit
 * addressing of vertex buffers.
 * @private
 * @readonly
 */
ArrayGroup.MAX_VERTEX_ARRAY_LENGTH = Math.pow(2, 16) - 1;

ArrayGroup.prototype.hasCapacityFor = function(numVertices) {
    return this.layoutVertexArray.length + numVertices <= ArrayGroup.MAX_VERTEX_ARRAY_LENGTH;
};

ArrayGroup.prototype.isEmpty = function() {
    return this.layoutVertexArray.length === 0;
};

ArrayGroup.prototype.trim = function() {
    this.layoutVertexArray.trim();

    if (this.elementArray) {
        this.elementArray.trim();
    }

    if (this.elementArray2) {
        this.elementArray2.trim();
    }

    for (var layerName in this.paintVertexArrays) {
        this.paintVertexArrays[layerName].trim();
    }
};

ArrayGroup.prototype.serialize = function() {
    return {
        layoutVertexArray: this.layoutVertexArray.serialize(),
        elementArray: this.elementArray && this.elementArray.serialize(),
        elementArray2: this.elementArray2 && this.elementArray2.serialize(),
        paintVertexArrays: util.mapObject(this.paintVertexArrays, function(array) {
            return array.serialize();
        })
    };
};

ArrayGroup.prototype.getTransferables = function(transferables) {
    transferables.push(this.layoutVertexArray.arrayBuffer);

    if (this.elementArray) {
        transferables.push(this.elementArray.arrayBuffer);
    }

    if (this.elementArray2) {
        transferables.push(this.elementArray2.arrayBuffer);
    }

    for (var layerName in this.paintVertexArrays) {
        transferables.push(this.paintVertexArrays[layerName].arrayBuffer);
    }
};

},{"../util/util":418}],305:[function(require,module,exports){
'use strict';

var featureFilter = require('feature-filter');
var ArrayGroup = require('./array_group');
var BufferGroup = require('./buffer_group');
var util = require('../util/util');
var StructArrayType = require('../util/struct_array');
var assert = require('assert');

module.exports = Bucket;

/**
 * Instantiate the appropriate subclass of `Bucket` for `options`.
 * @private
 * @param options See `Bucket` constructor options
 * @returns {Bucket}
 */
Bucket.create = function(options) {
    var Classes = {
        fill: require('./bucket/fill_bucket'),
        line: require('./bucket/line_bucket'),
        circle: require('./bucket/circle_bucket'),
        symbol: require('./bucket/symbol_bucket')
    };
    return new Classes[options.layer.type](options);
};


/**
 * The maximum extent of a feature that can be safely stored in the buffer.
 * In practice, all features are converted to this extent before being added.
 *
 * Positions are stored as signed 16bit integers.
 * One bit is lost for signedness to support featuers extending past the left edge of the tile.
 * One bit is lost because the line vertex buffer packs 1 bit of other data into the int.
 * One bit is lost to support features extending past the extent on the right edge of the tile.
 * This leaves us with 2^13 = 8192
 *
 * @private
 * @readonly
 */
Bucket.EXTENT = 8192;

/**
 * The `Bucket` class is the single point of knowledge about turning vector
 * tiles into WebGL buffers.
 *
 * `Bucket` is an abstract class. A subclass exists for each Mapbox GL
 * style spec layer type. Because `Bucket` is an abstract class,
 * instances should be created via the `Bucket.create` method.
 *
 * @class Bucket
 * @private
 * @param options
 * @param {number} options.zoom Zoom level of the buffers being built. May be
 *     a fractional zoom level.
 * @param options.layer A Mapbox style layer object
 * @param {Object.<string, Buffer>} options.buffers The set of `Buffer`s being
 *     built for this tile. This object facilitates sharing of `Buffer`s be
       between `Bucket`s.
 */
function Bucket(options) {
    this.zoom = options.zoom;
    this.overscaling = options.overscaling;
    this.layer = options.layer;
    this.childLayers = options.childLayers;

    this.type = this.layer.type;
    this.features = [];
    this.id = this.layer.id;
    this.index = options.index;
    this.sourceLayer = this.layer.sourceLayer;
    this.sourceLayerIndex = options.sourceLayerIndex;
    this.minZoom = this.layer.minzoom;
    this.maxZoom = this.layer.maxzoom;

    this.paintAttributes = createPaintAttributes(this);

    if (options.arrays) {
        var programInterfaces = this.programInterfaces;
        this.bufferGroups = util.mapObject(options.arrays, function(programArrayGroups, programName) {
            var programInterface = programInterfaces[programName];
            var paintVertexArrayTypes = options.paintVertexArrayTypes[programName];
            return programArrayGroups.map(function(arrayGroup) {
                return new BufferGroup(arrayGroup, {
                    layoutVertexArrayType: programInterface.layoutVertexArrayType.serialize(),
                    elementArrayType: programInterface.elementArrayType && programInterface.elementArrayType.serialize(),
                    elementArrayType2: programInterface.elementArrayType2 && programInterface.elementArrayType2.serialize(),
                    paintVertexArrayTypes: paintVertexArrayTypes
                });
            });
        });
    }
}

/**
 * Build the arrays! Features are set directly to the `features` property.
 * @private
 */
Bucket.prototype.populateArrays = function() {
    this.createArrays();
    this.recalculateStyleLayers();

    for (var i = 0; i < this.features.length; i++) {
        this.addFeature(this.features[i]);
    }

    this.trimArrays();
};

/**
 * Check if there is enough space available in the current array group for
 * `vertexLength` vertices. If not, append a new array group. Should be called
 * by `populateArrays` and its callees.
 *
 * Array groups are added to this.arrayGroups[programName].
 *
 * @private
 * @param {string} programName the name of the program associated with the buffer that will receive the vertices
 * @param {number} vertexLength The number of vertices that will be inserted to the buffer.
 * @returns The current array group
 */
Bucket.prototype.prepareArrayGroup = function(programName, numVertices) {
    var groups = this.arrayGroups[programName];
    var currentGroup = groups.length && groups[groups.length - 1];

    if (!currentGroup || !currentGroup.hasCapacityFor(numVertices)) {
        currentGroup = new ArrayGroup({
            layoutVertexArrayType: this.programInterfaces[programName].layoutVertexArrayType,
            elementArrayType: this.programInterfaces[programName].elementArrayType,
            elementArrayType2: this.programInterfaces[programName].elementArrayType2,
            paintVertexArrayTypes: this.paintVertexArrayTypes[programName]
        });

        currentGroup.index = groups.length;

        groups.push(currentGroup);
    }

    return currentGroup;
};

/**
 * Sets up `this.paintVertexArrayTypes` as { [programName]: { [layerName]: PaintArrayType, ... }, ... }
 *
 * And `this.arrayGroups` as { [programName]: [], ... }; these get populated
 * with array group structure over in `prepareArrayGroup`.
 *
 * @private
 */
Bucket.prototype.createArrays = function() {
    this.arrayGroups = {};
    this.paintVertexArrayTypes = {};

    for (var programName in this.programInterfaces) {
        this.arrayGroups[programName] = [];

        var paintVertexArrayTypes = this.paintVertexArrayTypes[programName] = {};
        var layerPaintAttributes = this.paintAttributes[programName];

        for (var layerName in layerPaintAttributes) {
            paintVertexArrayTypes[layerName] = new Bucket.VertexArrayType(layerPaintAttributes[layerName].attributes);
        }
    }
};

Bucket.prototype.destroy = function(gl) {
    for (var programName in this.bufferGroups) {
        var programBufferGroups = this.bufferGroups[programName];
        for (var i = 0; i < programBufferGroups.length; i++) {
            programBufferGroups[i].destroy(gl);
        }
    }
};

Bucket.prototype.trimArrays = function() {
    for (var programName in this.arrayGroups) {
        var arrayGroups = this.arrayGroups[programName];
        for (var i = 0; i < arrayGroups.length; i++) {
            arrayGroups[i].trim();
        }
    }
};

Bucket.prototype.isEmpty = function() {
    for (var programName in this.arrayGroups) {
        var arrayGroups = this.arrayGroups[programName];
        for (var i = 0; i < arrayGroups.length; i++) {
            if (!arrayGroups[i].isEmpty()) {
                return false;
            }
        }
    }
    return true;
};

Bucket.prototype.getTransferables = function(transferables) {
    for (var programName in this.arrayGroups) {
        var arrayGroups = this.arrayGroups[programName];
        for (var i = 0; i < arrayGroups.length; i++) {
            arrayGroups[i].getTransferables(transferables);
        }
    }
};

Bucket.prototype.setUniforms = function(gl, programName, program, layer, globalProperties) {
    var uniforms = this.paintAttributes[programName][layer.id].uniforms;
    for (var i = 0; i < uniforms.length; i++) {
        var uniform = uniforms[i];
        var uniformLocation = program[uniform.name];
        gl['uniform' + uniform.components + 'fv'](uniformLocation, uniform.getValue(layer, globalProperties));
    }
};

Bucket.prototype.serialize = function() {
    return {
        layerId: this.layer.id,
        zoom: this.zoom,
        arrays: util.mapObject(this.arrayGroups, function(programArrayGroups) {
            return programArrayGroups.map(function(arrayGroup) {
                return arrayGroup.serialize();
            });
        }),
        paintVertexArrayTypes: util.mapObject(this.paintVertexArrayTypes, function(arrayTypes) {
            return util.mapObject(arrayTypes, function(arrayType) {
                return arrayType.serialize();
            });
        }),

        childLayerIds: this.childLayers.map(function(layer) {
            return layer.id;
        })
    };
};

Bucket.prototype.createFilter = function() {
    if (!this.filter) {
        this.filter = featureFilter(this.layer.filter);
    }
};

var FAKE_ZOOM_HISTORY = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
Bucket.prototype.recalculateStyleLayers = function() {
    for (var i = 0; i < this.childLayers.length; i++) {
        this.childLayers[i].recalculate(this.zoom, FAKE_ZOOM_HISTORY);
    }
};

Bucket.prototype.populatePaintArrays = function(interfaceName, globalProperties, featureProperties, startGroup, startIndex) {
    for (var l = 0; l < this.childLayers.length; l++) {
        var layer = this.childLayers[l];
        var groups = this.arrayGroups[interfaceName];
        for (var g = startGroup.index; g < groups.length; g++) {
            var group = groups[g];
            var length = group.layoutVertexArray.length;
            var paintArray = group.paintVertexArrays[layer.id];
            paintArray.resize(length);

            var attributes = this.paintAttributes[interfaceName][layer.id].attributes;
            for (var m = 0; m < attributes.length; m++) {
                var attribute = attributes[m];

                var value = attribute.getValue(layer, globalProperties, featureProperties);
                var multiplier = attribute.multiplier || 1;
                var components = attribute.components || 1;

                var start = g === startGroup.index  ? startIndex : 0;
                for (var i = start; i < length; i++) {
                    var vertex = paintArray.get(i);
                    for (var c = 0; c < components; c++) {
                        var memberName = components > 1 ? (attribute.name + c) : attribute.name;
                        vertex[memberName] = value[c] * multiplier;
                    }
                }
            }
        }
    }
};

/**
 * A vertex array stores data for each vertex in a geometry. Elements are aligned to 4 byte
 * boundaries for best performance in WebGL.
 * @private
 */
Bucket.VertexArrayType = function (members) {
    return new StructArrayType({
        members: members,
        alignment: 4
    });
};

/**
 * An element array stores Uint16 indicies of vertexes in a corresponding vertex array. With no
 * arguments, it defaults to three components per element, forming triangles.
 * @private
 */
Bucket.ElementArrayType = function (components) {
    return new StructArrayType({
        members: [{
            type: 'Uint16',
            name: 'vertices',
            components: components || 3
        }]
    });
};

function createPaintAttributes(bucket) {
    var attributes = {};
    for (var interfaceName in bucket.programInterfaces) {
        var layerPaintAttributes = attributes[interfaceName] = {};

        for (var c = 0; c < bucket.childLayers.length; c++) {
            var childLayer = bucket.childLayers[c];

            layerPaintAttributes[childLayer.id] = {
                attributes: [],
                uniforms: [],
                defines: [],
                vertexPragmas: { define: {}, initialize: {} },
                fragmentPragmas: { define: {}, initialize: {} }
            };
        }

        var interface_ = bucket.programInterfaces[interfaceName];
        if (!interface_.paintAttributes) continue;

        // These tokens are replaced by arguments to the pragma
        // https://github.com/mapbox/mapbox-gl-shaders#pragmas
        var attributePrecision = '{precision}';
        var attributeType = '{type}';

        for (var i = 0; i < interface_.paintAttributes.length; i++) {
            var attribute = interface_.paintAttributes[i];
            attribute.multiplier = attribute.multiplier || 1;

            for (var j = 0; j < bucket.childLayers.length; j++) {
                var layer = bucket.childLayers[j];
                var paintAttributes = layerPaintAttributes[layer.id];

                var attributeInputName = attribute.name;
                assert(attribute.name.slice(0, 2) === 'a_');
                var attributeInnerName = attribute.name.slice(2);
                var attributeVaryingDefinition;

                paintAttributes.fragmentPragmas.initialize[attributeInnerName] = '';

                if (layer.isPaintValueFeatureConstant(attribute.paintProperty)) {
                    paintAttributes.uniforms.push(attribute);

                    paintAttributes.fragmentPragmas.define[attributeInnerName] = paintAttributes.vertexPragmas.define[attributeInnerName] = [
                        'uniform',
                        attributePrecision,
                        attributeType,
                        attributeInputName
                    ].join(' ') + ';';

                    paintAttributes.fragmentPragmas.initialize[attributeInnerName] = paintAttributes.vertexPragmas.initialize[attributeInnerName] = [
                        attributePrecision,
                        attributeType,
                        attributeInnerName,
                        '=',
                        attributeInputName
                    ].join(' ') + ';\n';

                } else if (layer.isPaintValueZoomConstant(attribute.paintProperty)) {
                    paintAttributes.attributes.push(util.extend({}, attribute, {
                        name: attributeInputName
                    }));

                    attributeVaryingDefinition = [
                        'varying',
                        attributePrecision,
                        attributeType,
                        attributeInnerName
                    ].join(' ') + ';\n';

                    var attributeAttributeDefinition = [
                        paintAttributes.fragmentPragmas.define[attributeInnerName],
                        'attribute',
                        attributePrecision,
                        attributeType,
                        attributeInputName
                    ].join(' ') + ';\n';

                    paintAttributes.fragmentPragmas.define[attributeInnerName] = attributeVaryingDefinition;

                    paintAttributes.vertexPragmas.define[attributeInnerName] = attributeVaryingDefinition + attributeAttributeDefinition;

                    paintAttributes.vertexPragmas.initialize[attributeInnerName] = [
                        attributeInnerName,
                        '=',
                        attributeInputName,
                        '/',
                        attribute.multiplier.toFixed(1)
                    ].join(' ') + ';\n';

                } else {

                    var tName = 'u_' + attributeInputName.slice(2) + '_t';
                    var zoomLevels = layer.getPaintValueStopZoomLevels(attribute.paintProperty);

                    // Pick the index of the first offset to add to the buffers.
                    // Find the four closest stops, ideally with two on each side of the zoom level.
                    var numStops = 0;
                    while (numStops < zoomLevels.length && zoomLevels[numStops] < bucket.zoom) numStops++;
                    var stopOffset = Math.max(0, Math.min(zoomLevels.length - 4, numStops - 2));

                    var fourZoomLevels = [];
                    for (var s = 0; s < 4; s++) {
                        fourZoomLevels.push(zoomLevels[Math.min(stopOffset + s, zoomLevels.length - 1)]);
                    }

                    attributeVaryingDefinition = [
                        'varying',
                        attributePrecision,
                        attributeType,
                        attributeInnerName
                    ].join(' ') + ';\n';

                    paintAttributes.vertexPragmas.define[attributeInnerName] = attributeVaryingDefinition + [
                        'uniform',
                        'lowp',
                        'float',
                        tName
                    ].join(' ') + ';\n';
                    paintAttributes.fragmentPragmas.define[attributeInnerName] = attributeVaryingDefinition;

                    paintAttributes.uniforms.push(util.extend({}, attribute, {
                        name: tName,
                        getValue: createGetUniform(attribute, stopOffset),
                        components: 1
                    }));

                    var components = attribute.components;
                    if (components === 1) {

                        paintAttributes.attributes.push(util.extend({}, attribute, {
                            getValue: createFunctionGetValue(attribute, fourZoomLevels),
                            isFunction: true,
                            components: components * 4
                        }));

                        paintAttributes.vertexPragmas.define[attributeInnerName] += [
                            'attribute',
                            attributePrecision,
                            'vec4',
                            attributeInputName
                        ].join(' ') + ';\n';

                        paintAttributes.vertexPragmas.initialize[attributeInnerName] = [
                            attributeInnerName,
                            '=',
                            'evaluate_zoom_function_1(' + attributeInputName + ', ' + tName + ')',
                            '/',
                            attribute.multiplier.toFixed(1)
                        ].join(' ') + ';\n';

                    } else {

                        var attributeInputNames = [];
                        for (var k = 0; k < 4; k++) {
                            attributeInputNames.push(attributeInputName + k);
                            paintAttributes.attributes.push(util.extend({}, attribute, {
                                getValue: createFunctionGetValue(attribute, [fourZoomLevels[k]]),
                                isFunction: true,
                                name: attributeInputName + k
                            }));
                            paintAttributes.vertexPragmas.define[attributeInnerName] += [
                                'attribute',
                                attributePrecision,
                                attributeType,
                                attributeInputName + k
                            ].join(' ') + ';\n';
                        }
                        paintAttributes.vertexPragmas.initialize[attributeInnerName] = [
                            attributeInnerName,
                            ' = ',
                            'evaluate_zoom_function_4(' + attributeInputNames.join(', ') + ', ' + tName + ')',
                            '/',
                            attribute.multiplier.toFixed(1)
                        ].join(' ') + ';\n';
                    }
                }
            }
        }
    }
    return attributes;
}

function createFunctionGetValue(attribute, stopZoomLevels) {
    return function(layer, globalProperties, featureProperties) {
        if (stopZoomLevels.length === 1) {
            // return one multi-component value like color0
            return attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevels[0] }), featureProperties);
        } else {
            // pack multiple single-component values into a four component attribute
            var values = [];
            for (var z = 0; z < stopZoomLevels.length; z++) {
                var stopZoomLevel = stopZoomLevels[z];
                values.push(attribute.getValue(layer, util.extend({}, globalProperties, { zoom: stopZoomLevel }), featureProperties)[0]);
            }
            return values;
        }
    };
}

function createGetUniform(attribute, stopOffset) {
    return function(layer, globalProperties) {
        // stopInterp indicates which stops need to be interpolated.
        // If stopInterp is 3.5 then interpolate half way between stops 3 and 4.
        var stopInterp = layer.getPaintInterpolationT(attribute.paintProperty, globalProperties.zoom);
        // We can only store four stop values in the buffers. stopOffset is the number of stops that come
        // before the stops that were added to the buffers.
        return [Math.max(0, Math.min(4, stopInterp - stopOffset))];
    };
}

},{"../util/struct_array":416,"../util/util":418,"./array_group":304,"./bucket/circle_bucket":306,"./bucket/fill_bucket":307,"./bucket/line_bucket":308,"./bucket/symbol_bucket":309,"./buffer_group":311,"assert":9,"feature-filter":98}],306:[function(require,module,exports){
'use strict';

var Bucket = require('../bucket');
var util = require('../../util/util');
var loadGeometry = require('../load_geometry');
var EXTENT = Bucket.EXTENT;

module.exports = CircleBucket;

/**
 * Circles are represented by two triangles.
 *
 * Each corner has a pos that is the center of the circle and an extrusion
 * vector that is where it points.
 * @private
 */
function CircleBucket() {
    Bucket.apply(this, arguments);
}

CircleBucket.prototype = util.inherit(Bucket, {});

CircleBucket.prototype.addCircleVertex = function(layoutVertexArray, x, y, extrudeX, extrudeY) {
    return layoutVertexArray.emplaceBack(
            (x * 2) + ((extrudeX + 1) / 2),
            (y * 2) + ((extrudeY + 1) / 2));
};

CircleBucket.prototype.programInterfaces = {
    circle: {
        layoutVertexArrayType: new Bucket.VertexArrayType([{
            name: 'a_pos',
            components: 2,
            type: 'Int16'
        }]),
        elementArrayType: new Bucket.ElementArrayType(),

        paintAttributes: [{
            name: 'a_color',
            components: 4,
            type: 'Uint8',
            getValue: function(layer, globalProperties, featureProperties) {
                return layer.getPaintValue("circle-color", globalProperties, featureProperties);
            },
            multiplier: 255,
            paintProperty: 'circle-color'
        }, {
            name: 'a_radius',
            components: 1,
            type: 'Uint16',
            isLayerConstant: false,
            getValue: function(layer, globalProperties, featureProperties) {
                return [layer.getPaintValue("circle-radius", globalProperties, featureProperties)];
            },
            multiplier: 10,
            paintProperty: 'circle-radius'
        }, {
            name: 'a_blur',
            components: 1,
            type: 'Uint16',
            isLayerConstant: false,
            getValue: function(layer, globalProperties, featureProperties) {
                return [layer.getPaintValue("circle-blur", globalProperties, featureProperties)];
            },
            multiplier: 10,
            paintProperty: 'circle-blur'
        }, {
            name: 'a_opacity',
            components: 1,
            type: 'Uint16',
            isLayerConstant: false,
            getValue: function(layer, globalProperties, featureProperties) {
                return [layer.getPaintValue("circle-opacity", globalProperties, featureProperties)];
            },
            multiplier: 255,
            paintProperty: 'circle-opacity'
        }]
    }
};

CircleBucket.prototype.addFeature = function(feature) {
    var globalProperties = {zoom: this.zoom};
    var geometries = loadGeometry(feature);

    var startGroup = this.prepareArrayGroup('circle', 0);
    var startIndex = startGroup.layoutVertexArray.length;

    for (var j = 0; j < geometries.length; j++) {
        for (var k = 0; k < geometries[j].length; k++) {

            var x = geometries[j][k].x;
            var y = geometries[j][k].y;

            // Do not include points that are outside the tile boundaries.
            if (x < 0 || x >= EXTENT || y < 0 || y >= EXTENT) continue;

            // this geometry will be of the Point type, and we'll derive
            // two triangles from it.
            //
            // ┌─────────┐
            // │ 3     2 │
            // │         │
            // │ 0     1 │
            // └─────────┘

            var group = this.prepareArrayGroup('circle', 4);
            var layoutVertexArray = group.layoutVertexArray;

            var index = this.addCircleVertex(layoutVertexArray, x, y, -1, -1);
            this.addCircleVertex(layoutVertexArray, x, y, 1, -1);
            this.addCircleVertex(layoutVertexArray, x, y, 1, 1);
            this.addCircleVertex(layoutVertexArray, x, y, -1, 1);

            group.elementArray.emplaceBack(index, index + 1, index + 2);
            group.elementArray.emplaceBack(index, index + 3, index + 2);
        }
    }

    this.populatePaintArrays('circle', globalProperties, feature.properties, startGroup, startIndex);
};

},{"../../util/util":418,"../bucket":305,"../load_geometry":313}],307:[function(require,module,exports){
'use strict';

var Bucket = require('../bucket');
var util = require('../../util/util');
var loadGeometry = require('../load_geometry');
var earcut = require('earcut');
var classifyRings = require('../../util/classify_rings');
var EARCUT_MAX_RINGS = 500;

module.exports = FillBucket;

function FillBucket() {
    Bucket.apply(this, arguments);
}

FillBucket.prototype = util.inherit(Bucket, {});

FillBucket.prototype.programInterfaces = {
    fill: {
        layoutVertexArrayType: new Bucket.VertexArrayType([{
            name: 'a_pos',
            components: 2,
            type: 'Int16'
        }]),
        elementArrayType: new Bucket.ElementArrayType(1),
        elementArrayType2: new Bucket.ElementArrayType(2),

        paintAttributes: [{
            name: 'a_color',
            components: 4,
            type: 'Uint8',
            getValue: function(layer, globalProperties, featureProperties) {
                return layer.getPaintValue("fill-color", globalProperties, featureProperties);
            },
            multiplier: 255,
            paintProperty: 'fill-color'
        }, {
            name: 'a_outline_color',
            components: 4,
            type: 'Uint8',
            getValue: function(layer, globalProperties, featureProperties) {
                return layer.getPaintValue("fill-outline-color", globalProperties, featureProperties);
            },
            multiplier: 255,
            paintProperty: 'fill-outline-color'
        }, {
            name: 'a_opacity',
            components: 1,
            type: 'Uint8',
            getValue: function(layer, globalProperties, featureProperties) {
                return [layer.getPaintValue("fill-opacity", globalProperties, featureProperties)];
            },
            multiplier: 255,
            paintProperty: 'fill-opacity'
        }]
    }
};

FillBucket.prototype.addFeature = function(feature) {
    var lines = loadGeometry(feature);
    var polygons = classifyRings(lines, EARCUT_MAX_RINGS);

    var startGroup = this.prepareArrayGroup('fill', 0);
    var startIndex = startGroup.layoutVertexArray.length;

    for (var i = 0; i < polygons.length; i++) {
        this.addPolygon(polygons[i]);
    }

    this.populatePaintArrays('fill', {zoom: this.zoom}, feature.properties, startGroup, startIndex);
};

FillBucket.prototype.addPolygon = function(polygon) {
    var numVertices = 0;
    for (var k = 0; k < polygon.length; k++) {
        numVertices += polygon[k].length;
    }

    var group = this.prepareArrayGroup('fill', numVertices);
    var flattened = [];
    var holeIndices = [];
    var startIndex = group.layoutVertexArray.length;

    for (var r = 0; r < polygon.length; r++) {
        var ring = polygon[r];

        if (r > 0) holeIndices.push(flattened.length / 2);

        for (var v = 0; v < ring.length; v++) {
            var vertex = ring[v];

            var index = group.layoutVertexArray.emplaceBack(vertex.x, vertex.y);

            if (v >= 1) {
                group.elementArray2.emplaceBack(index - 1, index);
            }

            // convert to format used by earcut
            flattened.push(vertex.x);
            flattened.push(vertex.y);
        }
    }

    var triangleIndices = earcut(flattened, holeIndices);

    for (var i = 0; i < triangleIndices.length; i++) {
        group.elementArray.emplaceBack(triangleIndices[i] + startIndex);
    }
};

},{"../../util/classify_rings":406,"../../util/util":418,"../bucket":305,"../load_geometry":313,"earcut":91}],308:[function(require,module,exports){
'use strict';

var Bucket = require('../bucket');
var util = require('../../util/util');
var loadGeometry = require('../load_geometry');
var EXTENT = Bucket.EXTENT;

// NOTE ON EXTRUDE SCALE:
// scale the extrusion vector so that the normal length is this value.
// contains the "texture" normals (-1..1). this is distinct from the extrude
// normals for line joins, because the x-value remains 0 for the texture
// normal array, while the extrude normal actually moves the vertex to create
// the acute/bevelled line join.
var EXTRUDE_SCALE = 63;

/*
 * Sharp corners cause dashed lines to tilt because the distance along the line
 * is the same at both the inner and outer corners. To improve the appearance of
 * dashed lines we add extra points near sharp corners so that a smaller part
 * of the line is tilted.
 *
 * COS_HALF_SHARP_CORNER controls how sharp a corner has to be for us to add an
 * extra vertex. The default is 75 degrees.
 *
 * The newly created vertices are placed SHARP_CORNER_OFFSET pixels from the corner.
 */
var COS_HALF_SHARP_CORNER = Math.cos(75 / 2 * (Math.PI / 180));
var SHARP_CORNER_OFFSET = 15;

// The number of bits that is used to store the line distance in the buffer.
var LINE_DISTANCE_BUFFER_BITS = 15;

// We don't have enough bits for the line distance as we'd like to have, so
// use this value to scale the line distance (in tile units) down to a smaller
// value. This lets us store longer distances while sacrificing precision.
var LINE_DISTANCE_SCALE = 1 / 2;

// The maximum line distance, in tile units, that fits in the buffer.
var MAX_LINE_DISTANCE = Math.pow(2, LINE_DISTANCE_BUFFER_BITS - 1) / LINE_DISTANCE_SCALE;


module.exports = LineBucket;

/**
 * @private
 */
function LineBucket() {
    Bucket.apply(this, arguments);
}

LineBucket.prototype = util.inherit(Bucket, {});

LineBucket.prototype.addLineVertex = function(layoutVertexBuffer, point, extrude, tx, ty, dir, linesofar) {
    return layoutVertexBuffer.emplaceBack(
            // a_pos
            (point.x << 1) | tx,
            (point.y << 1) | ty,
            // a_data
            // add 128 to store an byte in an unsigned byte
            Math.round(EXTRUDE_SCALE * extrude.x) + 128,
            Math.round(EXTRUDE_SCALE * extrude.y) + 128,
            // Encode the -1/0/1 direction value into the first two bits of .z of a_data.
            // Combine it with the lower 6 bits of `linesofar` (shifted by 2 bites to make
            // room for the direction value). The upper 8 bits of `linesofar` are placed in
            // the `w` component. `linesofar` is scaled down by `LINE_DISTANCE_SCALE` so that
            // we can store longer distances while sacrificing precision.
            ((dir === 0 ? 0 : (dir < 0 ? -1 : 1)) + 1) | (((linesofar * LINE_DISTANCE_SCALE) & 0x3F) << 2),
            (linesofar * LINE_DISTANCE_SCALE) >> 6);
};

LineBucket.prototype.programInterfaces = {
    line: {
        layoutVertexArrayType: new Bucket.VertexArrayType([{
            name: 'a_pos',
            components: 2,
            type: 'Int16'
        }, {
            name: 'a_data',
            components: 4,
            type: 'Uint8'
        }]),
        elementArrayType: new Bucket.ElementArrayType()
    }
};

LineBucket.prototype.addFeature = function(feature) {
    var lines = loadGeometry(feature, LINE_DISTANCE_BUFFER_BITS);
    for (var i = 0; i < lines.length; i++) {
        this.addLine(
            lines[i],
            this.layer.layout['line-join'],
            this.layer.layout['line-cap'],
            this.layer.layout['line-miter-limit'],
            this.layer.layout['line-round-limit']
        );
    }
};

LineBucket.prototype.addLine = function(vertices, join, cap, miterLimit, roundLimit) {

    var len = vertices.length;
    // If the line has duplicate vertices at the end, adjust length to remove them.
    while (len > 2 && vertices[len - 1].equals(vertices[len - 2])) {
        len--;
    }

    // a line must have at least two vertices
    if (vertices.length < 2) return;

    if (join === 'bevel') miterLimit = 1.05;

    var sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));

    var firstVertex = vertices[0],
        lastVertex = vertices[len - 1],
        closed = firstVertex.equals(lastVertex);

    // we could be more precise, but it would only save a negligible amount of space
    this.prepareArrayGroup('line', len * 10);

    // a line may not have coincident points
    if (len === 2 && closed) return;

    this.distance = 0;

    var beginCap = cap,
        endCap = closed ? 'butt' : cap,
        startOfLine = true,
        currentVertex, prevVertex, nextVertex, prevNormal, nextNormal, offsetA, offsetB;

    // the last three vertices added
    this.e1 = this.e2 = this.e3 = -1;

    if (closed) {
        currentVertex = vertices[len - 2];
        nextNormal = firstVertex.sub(currentVertex)._unit()._perp();
    }

    for (var i = 0; i < len; i++) {

        nextVertex = closed && i === len - 1 ?
            vertices[1] : // if the line is closed, we treat the last vertex like the first
            vertices[i + 1]; // just the next vertex

        // if two consecutive vertices exist, skip the current one
        if (nextVertex && vertices[i].equals(nextVertex)) continue;

        if (nextNormal) prevNormal = nextNormal;
        if (currentVertex) prevVertex = currentVertex;

        currentVertex = vertices[i];

        // Calculate the normal towards the next vertex in this line. In case
        // there is no next vertex, pretend that the line is continuing straight,
        // meaning that we are just using the previous normal.
        nextNormal = nextVertex ? nextVertex.sub(currentVertex)._unit()._perp() : prevNormal;

        // If we still don't have a previous normal, this is the beginning of a
        // non-closed line, so we're doing a straight "join".
        prevNormal = prevNormal || nextNormal;

        // Determine the normal of the join extrusion. It is the angle bisector
        // of the segments between the previous line and the next line.
        var joinNormal = prevNormal.add(nextNormal)._unit();

        /*  joinNormal     prevNormal
         *             ↖      ↑
         *                .________. prevVertex
         *                |
         * nextNormal  ←  |  currentVertex
         *                |
         *     nextVertex !
         *
         */

        // Calculate the length of the miter (the ratio of the miter to the width).
        // Find the cosine of the angle between the next and join normals
        // using dot product. The inverse of that is the miter length.
        var cosHalfAngle = joinNormal.x * nextNormal.x + joinNormal.y * nextNormal.y;
        var miterLength = 1 / cosHalfAngle;

        var isSharpCorner = cosHalfAngle < COS_HALF_SHARP_CORNER && prevVertex && nextVertex;

        if (isSharpCorner && i > 0) {
            var prevSegmentLength = currentVertex.dist(prevVertex);
            if (prevSegmentLength > 2 * sharpCornerOffset) {
                var newPrevVertex = currentVertex.sub(currentVertex.sub(prevVertex)._mult(sharpCornerOffset / prevSegmentLength)._round());
                this.distance += newPrevVertex.dist(prevVertex);
                this.addCurrentVertex(newPrevVertex, this.distance, prevNormal.mult(1), 0, 0, false);
                prevVertex = newPrevVertex;
            }
        }

        // The join if a middle vertex, otherwise the cap.
        var middleVertex = prevVertex && nextVertex;
        var currentJoin = middleVertex ? join : nextVertex ? beginCap : endCap;

        if (middleVertex && currentJoin === 'round') {
            if (miterLength < roundLimit) {
                currentJoin = 'miter';
            } else if (miterLength <= 2) {
                currentJoin = 'fakeround';
            }
        }

        if (currentJoin === 'miter' && miterLength > miterLimit) {
            currentJoin = 'bevel';
        }

        if (currentJoin === 'bevel') {
            // The maximum extrude length is 128 / 63 = 2 times the width of the line
            // so if miterLength >= 2 we need to draw a different type of bevel where.
            if (miterLength > 2) currentJoin = 'flipbevel';

            // If the miterLength is really small and the line bevel wouldn't be visible,
            // just draw a miter join to save a triangle.
            if (miterLength < miterLimit) currentJoin = 'miter';
        }

        // Calculate how far along the line the currentVertex is
        if (prevVertex) this.distance += currentVertex.dist(prevVertex);

        if (currentJoin === 'miter') {

            joinNormal._mult(miterLength);
            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);

        } else if (currentJoin === 'flipbevel') {
            // miter is too big, flip the direction to make a beveled join

            if (miterLength > 100) {
                // Almost parallel lines
                joinNormal = nextNormal.clone();

            } else {
                var direction = prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x > 0 ? -1 : 1;
                var bevelLength = miterLength * prevNormal.add(nextNormal).mag() / prevNormal.sub(nextNormal).mag();
                joinNormal._perp()._mult(bevelLength * direction);
            }
            this.addCurrentVertex(currentVertex, this.distance, joinNormal, 0, 0, false);
            this.addCurrentVertex(currentVertex, this.distance, joinNormal.mult(-1), 0, 0, false);

        } else if (currentJoin === 'bevel' || currentJoin === 'fakeround') {
            var lineTurnsLeft = (prevNormal.x * nextNormal.y - prevNormal.y * nextNormal.x) > 0;
            var offset = -Math.sqrt(miterLength * miterLength - 1);
            if (lineTurnsLeft) {
                offsetB = 0;
                offsetA = offset;
            } else {
                offsetA = 0;
                offsetB = offset;
            }

            // Close previous segment with a bevel
            if (!startOfLine) {
                this.addCurrentVertex(currentVertex, this.distance, prevNormal, offsetA, offsetB, false);
            }

            if (currentJoin === 'fakeround') {
                // The join angle is sharp enough that a round join would be visible.
                // Bevel joins fill the gap between segments with a single pie slice triangle.
                // Create a round join by adding multiple pie slices. The join isn't actually round, but
                // it looks like it is at the sizes we render lines at.

                // Add more triangles for sharper angles.
                // This math is just a good enough approximation. It isn't "correct".
                var n = Math.floor((0.5 - (cosHalfAngle - 0.5)) * 8);
                var approxFractionalJoinNormal;

                for (var m = 0; m < n; m++) {
                    approxFractionalJoinNormal = nextNormal.mult((m + 1) / (n + 1))._add(prevNormal)._unit();
                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
                }

                this.addPieSliceVertex(currentVertex, this.distance, joinNormal, lineTurnsLeft);

                for (var k = n - 1; k >= 0; k--) {
                    approxFractionalJoinNormal = prevNormal.mult((k + 1) / (n + 1))._add(nextNormal)._unit();
                    this.addPieSliceVertex(currentVertex, this.distance, approxFractionalJoinNormal, lineTurnsLeft);
                }
            }

            // Start next segment
            if (nextVertex) {
                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -offsetA, -offsetB, false);
            }

        } else if (currentJoin === 'butt') {
            if (!startOfLine) {
                // Close previous segment with a butt
                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);
            }

            // Start next segment with a butt
            if (nextVertex) {
                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
            }

        } else if (currentJoin === 'square') {

            if (!startOfLine) {
                // Close previous segment with a square cap
                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, false);

                // The segment is done. Unset vertices to disconnect segments.
                this.e1 = this.e2 = -1;
            }

            // Start next segment
            if (nextVertex) {
                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, false);
            }

        } else if (currentJoin === 'round') {

            if (!startOfLine) {
                // Close previous segment with butt
                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 0, 0, false);

                // Add round cap or linejoin at end of segment
                this.addCurrentVertex(currentVertex, this.distance, prevNormal, 1, 1, true);

                // The segment is done. Unset vertices to disconnect segments.
                this.e1 = this.e2 = -1;
            }


            // Start next segment with a butt
            if (nextVertex) {
                // Add round cap before first segment
                this.addCurrentVertex(currentVertex, this.distance, nextNormal, -1, -1, true);

                this.addCurrentVertex(currentVertex, this.distance, nextNormal, 0, 0, false);
            }
        }

        if (isSharpCorner && i < len - 1) {
            var nextSegmentLength = currentVertex.dist(nextVertex);
            if (nextSegmentLength > 2 * sharpCornerOffset) {
                var newCurrentVertex = currentVertex.add(nextVertex.sub(currentVertex)._mult(sharpCornerOffset / nextSegmentLength)._round());
                this.distance += newCurrentVertex.dist(currentVertex);
                this.addCurrentVertex(newCurrentVertex, this.distance, nextNormal.mult(1), 0, 0, false);
                currentVertex = newCurrentVertex;
            }
        }

        startOfLine = false;
    }

};

/**
 * Add two vertices to the buffers.
 *
 * @param {Object} currentVertex the line vertex to add buffer vertices for
 * @param {number} distance the distance from the beginning of the line to the vertex
 * @param {number} endLeft extrude to shift the left vertex along the line
 * @param {number} endRight extrude to shift the left vertex along the line
 * @param {boolean} round whether this is a round cap
 * @private
 */
LineBucket.prototype.addCurrentVertex = function(currentVertex, distance, normal, endLeft, endRight, round) {
    var tx = round ? 1 : 0;
    var extrude;
    var arrayGroup = this.arrayGroups.line[this.arrayGroups.line.length - 1];
    var layoutVertexArray = arrayGroup.layoutVertexArray;
    var elementArray = arrayGroup.elementArray;

    extrude = normal.clone();
    if (endLeft) extrude._sub(normal.perp()._mult(endLeft));
    this.e3 = this.addLineVertex(layoutVertexArray, currentVertex, extrude, tx, 0, endLeft, distance);
    if (this.e1 >= 0 && this.e2 >= 0) {
        elementArray.emplaceBack(this.e1, this.e2, this.e3);
    }
    this.e1 = this.e2;
    this.e2 = this.e3;

    extrude = normal.mult(-1);
    if (endRight) extrude._sub(normal.perp()._mult(endRight));
    this.e3 = this.addLineVertex(layoutVertexArray, currentVertex, extrude, tx, 1, -endRight, distance);
    if (this.e1 >= 0 && this.e2 >= 0) {
        elementArray.emplaceBack(this.e1, this.e2, this.e3);
    }
    this.e1 = this.e2;
    this.e2 = this.e3;

    // There is a maximum "distance along the line" that we can store in the buffers.
    // When we get close to the distance, reset it to zero and add the vertex again with
    // a distance of zero. The max distance is determined by the number of bits we allocate
    // to `linesofar`.
    if (distance > MAX_LINE_DISTANCE / 2) {
        this.distance = 0;
        this.addCurrentVertex(currentVertex, this.distance, normal, endLeft, endRight, round);
    }
};

/**
 * Add a single new vertex and a triangle using two previous vertices.
 * This adds a pie slice triangle near a join to simulate round joins
 *
 * @param {Object} currentVertex the line vertex to add buffer vertices for
 * @param {number} distance the distance from the beggining of the line to the vertex
 * @param {Object} extrude the offset of the new vertex from the currentVertex
 * @param {boolean} whether the line is turning left or right at this angle
 * @private
 */
LineBucket.prototype.addPieSliceVertex = function(currentVertex, distance, extrude, lineTurnsLeft) {
    var ty = lineTurnsLeft ? 1 : 0;
    extrude = extrude.mult(lineTurnsLeft ? -1 : 1);
    var arrayGroup = this.arrayGroups.line[this.arrayGroups.line.length - 1];
    var layoutVertexArray = arrayGroup.layoutVertexArray;
    var elementArray = arrayGroup.elementArray;

    this.e3 = this.addLineVertex(layoutVertexArray, currentVertex, extrude, 0, ty, 0, distance);

    if (this.e1 >= 0 && this.e2 >= 0) {
        elementArray.emplaceBack(this.e1, this.e2, this.e3);
    }

    if (lineTurnsLeft) {
        this.e2 = this.e3;
    } else {
        this.e1 = this.e3;
    }
};

},{"../../util/util":418,"../bucket":305,"../load_geometry":313}],309:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');

var Bucket = require('../bucket');
var Anchor = require('../../symbol/anchor');
var getAnchors = require('../../symbol/get_anchors');
var resolveTokens = require('../../util/token');
var Quads = require('../../symbol/quads');
var Shaping = require('../../symbol/shaping');
var resolveText = require('../../symbol/resolve_text');
var mergeLines = require('../../symbol/mergelines');
var clipLine = require('../../symbol/clip_line');
var util = require('../../util/util');
var loadGeometry = require('../load_geometry');
var CollisionFeature = require('../../symbol/collision_feature');

var shapeText = Shaping.shapeText;
var shapeIcon = Shaping.shapeIcon;
var getGlyphQuads = Quads.getGlyphQuads;
var getIconQuads = Quads.getIconQuads;

var EXTENT = Bucket.EXTENT;

module.exports = SymbolBucket;

function SymbolBucket(options) {
    Bucket.apply(this, arguments);
    this.showCollisionBoxes = options.showCollisionBoxes;
    this.overscaling = options.overscaling;
    this.collisionBoxArray = options.collisionBoxArray;
    this.symbolQuadsArray = options.symbolQuadsArray;
    this.symbolInstancesArray = options.symbolInstancesArray;

    this.sdfIcons = options.sdfIcons;
    this.iconsNeedLinear = options.iconsNeedLinear;
    this.adjustedTextSize = options.adjustedTextSize;
    this.adjustedIconSize = options.adjustedIconSize;
    this.fontstack = options.fontstack;
}

// this constant is based on the size of the glyphQuadEndIndex and iconQuadEndIndex
// in the symbol_instances StructArrayType
// eg the max valid UInt16 is 65,535
SymbolBucket.MAX_QUADS = 65535;

SymbolBucket.prototype = util.inherit(Bucket, {});

SymbolBucket.prototype.serialize = function() {
    var serialized = Bucket.prototype.serialize.apply(this);
    serialized.sdfIcons = this.sdfIcons;
    serialized.iconsNeedLinear = this.iconsNeedLinear;
    serialized.adjustedTextSize = this.adjustedTextSize;
    serialized.adjustedIconSize = this.adjustedIconSize;
    serialized.fontstack = this.fontstack;
    return serialized;
};

var layoutVertexArrayType = new Bucket.VertexArrayType([{
    name: 'a_pos',
    components: 2,
    type: 'Int16'
}, {
    name: 'a_offset',
    components: 2,
    type: 'Int16'
}, {
    name: 'a_texture_pos',
    components: 2,
    type: 'Uint16'
}, {
    name: 'a_data',
    components: 4,
    type: 'Uint8'
}]);

var elementArrayType = new Bucket.ElementArrayType();

function addVertex(array, x, y, ox, oy, tx, ty, minzoom, maxzoom, labelminzoom, labelangle) {
    return array.emplaceBack(
            // a_pos
            x,
            y,

            // a_offset
            Math.round(ox * 64),
            Math.round(oy * 64),

            // a_texture_pos
            tx / 4, // x coordinate of symbol on glyph atlas texture
            ty / 4, // y coordinate of symbol on glyph atlas texture

            // a_data
            (labelminzoom || 0) * 10, // labelminzoom
            labelangle, // labelangle
            (minzoom || 0) * 10, // minzoom
            Math.min(maxzoom || 25, 25) * 10); // maxzoom
}

SymbolBucket.prototype.addCollisionBoxVertex = function(layoutVertexArray, point, extrude, maxZoom, placementZoom) {
    return layoutVertexArray.emplaceBack(
            // pos
            point.x,
            point.y,
            // extrude
            Math.round(extrude.x),
            Math.round(extrude.y),
            // data
            maxZoom * 10,
            placementZoom * 10);
};

SymbolBucket.prototype.programInterfaces = {

    glyph: {
        layoutVertexArrayType: layoutVertexArrayType,
        elementArrayType: elementArrayType
    },

    icon: {
        layoutVertexArrayType: layoutVertexArrayType,
        elementArrayType: elementArrayType
    },

    collisionBox: {
        layoutVertexArrayType: new Bucket.VertexArrayType([{
            name: 'a_pos',
            components: 2,
            type: 'Int16'
        }, {
            name: 'a_extrude',
            components: 2,
            type: 'Int16'
        }, {
            name: 'a_data',
            components: 2,
            type: 'Uint8'
        }])
    }
};

SymbolBucket.prototype.populateArrays = function(collisionTile, stacks, icons) {

    // To reduce the number of labels that jump around when zooming we need
    // to use a text-size value that is the same for all zoom levels.
    // This calculates text-size at a high zoom level so that all tiles can
    // use the same value when calculating anchor positions.
    var zoomHistory = { lastIntegerZoom: Infinity, lastIntegerZoomTime: 0, lastZoom: 0 };
    this.adjustedTextMaxSize = this.layer.getLayoutValue('text-size', {zoom: 18, zoomHistory: zoomHistory});
    this.adjustedTextSize = this.layer.getLayoutValue('text-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});
    this.adjustedIconMaxSize = this.layer.getLayoutValue('icon-size', {zoom: 18, zoomHistory: zoomHistory});
    this.adjustedIconSize = this.layer.getLayoutValue('icon-size', {zoom: this.zoom + 1, zoomHistory: zoomHistory});

    var tileSize = 512 * this.overscaling;
    this.tilePixelRatio = EXTENT / tileSize;
    this.compareText = {};
    this.iconsNeedLinear = false;
    this.symbolInstancesStartIndex = this.symbolInstancesArray.length;

    var layout = this.layer.layout;
    var features = this.features;
    var textFeatures = this.textFeatures;

    var horizontalAlign = 0.5,
        verticalAlign = 0.5;

    switch (layout['text-anchor']) {
    case 'right':
    case 'top-right':
    case 'bottom-right':
        horizontalAlign = 1;
        break;
    case 'left':
    case 'top-left':
    case 'bottom-left':
        horizontalAlign = 0;
        break;
    }

    switch (layout['text-anchor']) {
    case 'bottom':
    case 'bottom-right':
    case 'bottom-left':
        verticalAlign = 1;
        break;
    case 'top':
    case 'top-right':
    case 'top-left':
        verticalAlign = 0;
        break;
    }

    var justify = layout['text-justify'] === 'right' ? 1 :
        layout['text-justify'] === 'left' ? 0 :
        0.5;

    var oneEm = 24;
    var lineHeight = layout['text-line-height'] * oneEm;
    var maxWidth = layout['symbol-placement'] !== 'line' ? layout['text-max-width'] * oneEm : 0;
    var spacing = layout['text-letter-spacing'] * oneEm;
    var textOffset = [layout['text-offset'][0] * oneEm, layout['text-offset'][1] * oneEm];
    var fontstack = this.fontstack = layout['text-font'].join(',');

    var geometries = [];
    for (var g = 0; g < features.length; g++) {
        geometries.push(loadGeometry(features[g]));
    }

    if (layout['symbol-placement'] === 'line') {
        // Merge adjacent lines with the same text to improve labelling.
        // It's better to place labels on one long line than on many short segments.
        var merged = mergeLines(features, textFeatures, geometries);

        geometries = merged.geometries;
        features = merged.features;
        textFeatures = merged.textFeatures;
    }

    var shapedText, shapedIcon;

    for (var k = 0; k < features.length; k++) {
        if (!geometries[k]) continue;

        if (textFeatures[k]) {
            shapedText = shapeText(textFeatures[k], stacks[fontstack], maxWidth,
                    lineHeight, horizontalAlign, verticalAlign, justify, spacing, textOffset);
        } else {
            shapedText = null;
        }

        if (layout['icon-image']) {
            var iconName = resolveTokens(features[k].properties, layout['icon-image']);
            var image = icons[iconName];
            shapedIcon = shapeIcon(image, layout);

            if (image) {
                if (this.sdfIcons === undefined) {
                    this.sdfIcons = image.sdf;
                } else if (this.sdfIcons !== image.sdf) {
                    util.warnOnce('Style sheet warning: Cannot mix SDF and non-SDF icons in one buffer');
                }
                if (image.pixelRatio !== 1) {
                    this.iconsNeedLinear = true;
                } else if (layout['icon-rotate'] !== 0 || !this.layer.isLayoutValueFeatureConstant('icon-rotate')) {
                    this.iconsNeedLinear = true;
                }
            }
        } else {
            shapedIcon = null;
        }

        if (shapedText || shapedIcon) {
            this.addFeature(geometries[k], shapedText, shapedIcon, features[k]);
        }
    }
    this.symbolInstancesEndIndex = this.symbolInstancesArray.length;
    this.placeFeatures(collisionTile, this.showCollisionBoxes);

    this.trimArrays();
};

SymbolBucket.prototype.addFeature = function(lines, shapedText, shapedIcon, feature) {
    var layout = this.layer.layout;

    var glyphSize = 24;

    var fontScale = this.adjustedTextSize / glyphSize,
        textMaxSize = this.adjustedTextMaxSize !== undefined ? this.adjustedTextMaxSize : this.adjustedTextSize,
        textBoxScale = this.tilePixelRatio * fontScale,
        textMaxBoxScale = this.tilePixelRatio * textMaxSize / glyphSize,
        iconBoxScale = this.tilePixelRatio * this.adjustedIconSize,
        symbolMinDistance = this.tilePixelRatio * layout['symbol-spacing'],
        avoidEdges = layout['symbol-avoid-edges'],
        textPadding = layout['text-padding'] * this.tilePixelRatio,
        iconPadding = layout['icon-padding'] * this.tilePixelRatio,
        textMaxAngle = layout['text-max-angle'] / 180 * Math.PI,
        textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
        iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line',
        mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
            layout['text-ignore-placement'] || layout['icon-ignore-placement'],
        isLine = layout['symbol-placement'] === 'line',
        textRepeatDistance = symbolMinDistance / 2;

    if (isLine) {
        lines = clipLine(lines, 0, 0, EXTENT, EXTENT);
    }

    for (var i = 0; i < lines.length; i++) {
        var line = lines[i];

        // Calculate the anchor points around which you want to place labels
        var anchors;
        if (isLine) {
            anchors = getAnchors(
                line,
                symbolMinDistance,
                textMaxAngle,
                shapedText,
                shapedIcon,
                glyphSize,
                textMaxBoxScale,
                this.overscaling,
                EXTENT
            );
        } else {
            anchors = [ new Anchor(line[0].x, line[0].y, 0) ];
        }

        // For each potential label, create the placement features used to check for collisions, and the quads use for rendering.
        for (var j = 0, len = anchors.length; j < len; j++) {
            var anchor = anchors[j];

            if (shapedText && isLine) {
                if (this.anchorIsTooClose(shapedText.text, textRepeatDistance, anchor)) {
                    continue;
                }
            }

            var inside = !(anchor.x < 0 || anchor.x > EXTENT || anchor.y < 0 || anchor.y > EXTENT);

            if (avoidEdges && !inside) continue;

            // Normally symbol layers are drawn across tile boundaries. Only symbols
            // with their anchors within the tile boundaries are added to the buffers
            // to prevent symbols from being drawn twice.
            //
            // Symbols in layers with overlap are sorted in the y direction so that
            // symbols lower on the canvas are drawn on top of symbols near the top.
            // To preserve this order across tile boundaries these symbols can't
            // be drawn across tile boundaries. Instead they need to be included in
            // the buffers for both tiles and clipped to tile boundaries at draw time.
            var addToBuffers = inside || mayOverlap;
            this.addSymbolInstance(anchor, line, shapedText, shapedIcon, this.layer,
                addToBuffers, this.symbolInstancesArray.length, this.collisionBoxArray, feature.index, this.sourceLayerIndex, this.index,
                textBoxScale, textPadding, textAlongLine,
                iconBoxScale, iconPadding, iconAlongLine, {zoom: this.zoom}, feature.properties);
        }
    }
};

SymbolBucket.prototype.anchorIsTooClose = function(text, repeatDistance, anchor) {
    var compareText = this.compareText;
    if (!(text in compareText)) {
        compareText[text] = [];
    } else {
        var otherAnchors = compareText[text];
        for (var k = otherAnchors.length - 1; k >= 0; k--) {
            if (anchor.dist(otherAnchors[k]) < repeatDistance) {
                // If it's within repeatDistance of one anchor, stop looking
                return true;
            }
        }
    }
    // If anchor is not within repeatDistance of any other anchor, add to array
    compareText[text].push(anchor);
    return false;
};

SymbolBucket.prototype.placeFeatures = function(collisionTile, showCollisionBoxes) {
    this.recalculateStyleLayers();

    // Calculate which labels can be shown and when they can be shown and
    // create the bufers used for rendering.

    this.createArrays();

    var layout = this.layer.layout;

    var maxScale = collisionTile.maxScale;

    var textAlongLine = layout['text-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';
    var iconAlongLine = layout['icon-rotation-alignment'] === 'map' && layout['symbol-placement'] === 'line';

    var mayOverlap = layout['text-allow-overlap'] || layout['icon-allow-overlap'] ||
        layout['text-ignore-placement'] || layout['icon-ignore-placement'];

    // Sort symbols by their y position on the canvas so that the lower symbols
    // are drawn on top of higher symbols.
    // Don't sort symbols that won't overlap because it isn't necessary and
    // because it causes more labels to pop in and out when rotating.
    if (mayOverlap) {
        // Only need the symbol instances from the current tile to sort, so convert those instances into an array
        // of `StructType`s to enable sorting
        var symbolInstancesStructTypeArray = this.symbolInstancesArray.toArray(this.symbolInstancesStartIndex, this.symbolInstancesEndIndex);

        var angle = collisionTile.angle;

        var sin = Math.sin(angle),
            cos = Math.cos(angle);

        this.sortedSymbolInstances = symbolInstancesStructTypeArray.sort(function(a, b) {
            var aRotated = (sin * a.anchorPointX + cos * a.anchorPointY) | 0;
            var bRotated = (sin * b.anchorPointX + cos * b.anchorPointY) | 0;
            return (aRotated - bRotated) || (b.index - a.index);
        });
    }

    for (var p = this.symbolInstancesStartIndex; p < this.symbolInstancesEndIndex; p++) {
        var symbolInstance = this.sortedSymbolInstances ? this.sortedSymbolInstances[p - this.symbolInstancesStartIndex] : this.symbolInstancesArray.get(p);
        var textCollisionFeature = {
            boxStartIndex: symbolInstance.textBoxStartIndex,
            boxEndIndex: symbolInstance.textBoxEndIndex
        };
        var iconCollisionFeature = {
            boxStartIndex: symbolInstance.iconBoxStartIndex,
            boxEndIndex: symbolInstance.iconBoxEndIndex
        };

        var hasText = !(symbolInstance.textBoxStartIndex === symbolInstance.textBoxEndIndex);
        var hasIcon = !(symbolInstance.iconBoxStartIndex === symbolInstance.iconBoxEndIndex);

        var iconWithoutText = layout['text-optional'] || !hasText,
            textWithoutIcon = layout['icon-optional'] || !hasIcon;


        // Calculate the scales at which the text and icon can be placed without collision.

        var glyphScale = hasText ?
            collisionTile.placeCollisionFeature(textCollisionFeature,
					layout['text-allow-overlap'], layout['symbol-avoid-edges']) :
            collisionTile.minScale;

        var iconScale = hasIcon ?
            collisionTile.placeCollisionFeature(iconCollisionFeature,
                    layout['icon-allow-overlap'], layout['symbol-avoid-edges']) :
            collisionTile.minScale;


        // Combine the scales for icons and text.

        if (!iconWithoutText && !textWithoutIcon) {
            iconScale = glyphScale = Math.max(iconScale, glyphScale);
        } else if (!textWithoutIcon && glyphScale) {
            glyphScale = Math.max(iconScale, glyphScale);
        } else if (!iconWithoutText && iconScale) {
            iconScale = Math.max(iconScale, glyphScale);
        }


        // Insert final placement into collision tree and add glyphs/icons to buffers

        if (hasText) {
            collisionTile.insertCollisionFeature(textCollisionFeature, glyphScale, layout['text-ignore-placement']);
            if (glyphScale <= maxScale) {
                this.addSymbols('glyph', symbolInstance.glyphQuadStartIndex, symbolInstance.glyphQuadEndIndex, glyphScale, layout['text-keep-upright'], textAlongLine, collisionTile.angle);
            }
        }

        if (hasIcon) {
            collisionTile.insertCollisionFeature(iconCollisionFeature, iconScale, layout['icon-ignore-placement']);
            if (iconScale <= maxScale) {
                this.addSymbols('icon', symbolInstance.iconQuadStartIndex, symbolInstance.iconQuadEndIndex, iconScale, layout['icon-keep-upright'], iconAlongLine, collisionTile.angle);
            }
        }

    }

    if (showCollisionBoxes) this.addToDebugBuffers(collisionTile);
};

SymbolBucket.prototype.addSymbols = function(programName, quadsStart, quadsEnd, scale, keepUpright, alongLine, placementAngle) {

    var group = this.prepareArrayGroup(programName, 4 * (quadsEnd - quadsStart));

    var elementArray = group.elementArray;
    var layoutVertexArray = group.layoutVertexArray;

    var zoom = this.zoom;
    var placementZoom = Math.max(Math.log(scale) / Math.LN2 + zoom, 0);

    for (var k = quadsStart; k < quadsEnd; k++) {

        var symbol = this.symbolQuadsArray.get(k).SymbolQuad;

        // drop upside down versions of glyphs
        var a = (symbol.anchorAngle + placementAngle + Math.PI) % (Math.PI * 2);
        if (keepUpright && alongLine && (a <= Math.PI / 2 || a > Math.PI * 3 / 2)) continue;

        var tl = symbol.tl,
            tr = symbol.tr,
            bl = symbol.bl,
            br = symbol.br,
            tex = symbol.tex,
            anchorPoint = symbol.anchorPoint,

            minZoom = Math.max(zoom + Math.log(symbol.minScale) / Math.LN2, placementZoom),
            maxZoom = Math.min(zoom + Math.log(symbol.maxScale) / Math.LN2, 25);

        if (maxZoom <= minZoom) continue;

        // Lower min zoom so that while fading out the label it can be shown outside of collision-free zoom levels
        if (minZoom === placementZoom) minZoom = 0;

        // Encode angle of glyph
        var glyphAngle = Math.round((symbol.glyphAngle / (Math.PI * 2)) * 256);

        var index = addVertex(layoutVertexArray, anchorPoint.x, anchorPoint.y, tl.x, tl.y, tex.x, tex.y, minZoom, maxZoom, placementZoom, glyphAngle);
        addVertex(layoutVertexArray, anchorPoint.x, anchorPoint.y, tr.x, tr.y, tex.x + tex.w, tex.y, minZoom, maxZoom, placementZoom, glyphAngle);
        addVertex(layoutVertexArray, anchorPoint.x, anchorPoint.y, bl.x, bl.y, tex.x, tex.y + tex.h, minZoom, maxZoom, placementZoom, glyphAngle);
        addVertex(layoutVertexArray, anchorPoint.x, anchorPoint.y, br.x, br.y, tex.x + tex.w, tex.y + tex.h, minZoom, maxZoom, placementZoom, glyphAngle);

        elementArray.emplaceBack(index, index + 1, index + 2);
        elementArray.emplaceBack(index + 1, index + 2, index + 3);
    }

};

SymbolBucket.prototype.updateIcons = function(icons) {
    this.recalculateStyleLayers();
    var iconValue = this.layer.layout['icon-image'];
    if (!iconValue) return;

    for (var i = 0; i < this.features.length; i++) {
        var iconName = resolveTokens(this.features[i].properties, iconValue);
        if (iconName)
            icons[iconName] = true;
    }
};

SymbolBucket.prototype.updateFont = function(stacks) {
    this.recalculateStyleLayers();
    var fontName = this.layer.layout['text-font'],
        stack = stacks[fontName] = stacks[fontName] || {};

    this.textFeatures = resolveText(this.features, this.layer.layout, stack);
};

SymbolBucket.prototype.addToDebugBuffers = function(collisionTile) {
    var group = this.prepareArrayGroup('collisionBox', 0);
    var layoutVertexArray = group.layoutVertexArray;
    var angle = -collisionTile.angle;
    var yStretch = collisionTile.yStretch;

    for (var j = this.symbolInstancesStartIndex; j < this.symbolInstancesEndIndex; j++) {
        var symbolInstance = this.symbolInstancesArray.get(j);
        symbolInstance.textCollisionFeature = {boxStartIndex: symbolInstance.textBoxStartIndex, boxEndIndex: symbolInstance.textBoxEndIndex};
        symbolInstance.iconCollisionFeature = {boxStartIndex: symbolInstance.iconBoxStartIndex, boxEndIndex: symbolInstance.iconBoxEndIndex};

        for (var i = 0; i < 2; i++) {
            var feature = symbolInstance[i === 0 ? 'textCollisionFeature' : 'iconCollisionFeature'];
            if (!feature) continue;

            for (var b = feature.boxStartIndex; b < feature.boxEndIndex; b++) {
                var box = this.collisionBoxArray.get(b);
                var anchorPoint = box.anchorPoint;

                var tl = new Point(box.x1, box.y1 * yStretch)._rotate(angle);
                var tr = new Point(box.x2, box.y1 * yStretch)._rotate(angle);
                var bl = new Point(box.x1, box.y2 * yStretch)._rotate(angle);
                var br = new Point(box.x2, box.y2 * yStretch)._rotate(angle);

                var maxZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.maxScale) / Math.LN2));
                var placementZoom = Math.max(0, Math.min(25, this.zoom + Math.log(box.placementScale) / Math.LN2));

                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, tl, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, tr, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, tr, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, br, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, br, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, bl, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, bl, maxZoom, placementZoom);
                this.addCollisionBoxVertex(layoutVertexArray, anchorPoint, tl, maxZoom, placementZoom);
            }
        }
    }
};

SymbolBucket.prototype.addSymbolInstance = function(anchor, line, shapedText, shapedIcon, layer, addToBuffers, index, collisionBoxArray, featureIndex, sourceLayerIndex, bucketIndex,
    textBoxScale, textPadding, textAlongLine,
    iconBoxScale, iconPadding, iconAlongLine, globalProperties, featureProperties) {

    var glyphQuadStartIndex, glyphQuadEndIndex, iconQuadStartIndex, iconQuadEndIndex, textCollisionFeature, iconCollisionFeature, glyphQuads, iconQuads;
    if (shapedText) {
        glyphQuads = addToBuffers ? getGlyphQuads(anchor, shapedText, textBoxScale, line, layer, textAlongLine) : [];
        textCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shapedText, textBoxScale, textPadding, textAlongLine, false);
    }

    glyphQuadStartIndex = this.symbolQuadsArray.length;
    if (glyphQuads && glyphQuads.length) {
        for (var i = 0; i < glyphQuads.length; i++) {
            this.addSymbolQuad(glyphQuads[i]);
        }
    }
    glyphQuadEndIndex = this.symbolQuadsArray.length;

    var textBoxStartIndex = textCollisionFeature ? textCollisionFeature.boxStartIndex : this.collisionBoxArray.length;
    var textBoxEndIndex = textCollisionFeature ? textCollisionFeature.boxEndIndex : this.collisionBoxArray.length;

    if (shapedIcon) {
        iconQuads = addToBuffers ? getIconQuads(anchor, shapedIcon, iconBoxScale, line, layer, iconAlongLine, shapedText, globalProperties, featureProperties) : [];
        iconCollisionFeature = new CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shapedIcon, iconBoxScale, iconPadding, iconAlongLine, true);
    }

    iconQuadStartIndex = this.symbolQuadsArray.length;
    if (iconQuads && iconQuads.length === 1) {
        this.addSymbolQuad(iconQuads[0]);
    }
    iconQuadEndIndex = this.symbolQuadsArray.length;

    var iconBoxStartIndex = iconCollisionFeature ? iconCollisionFeature.boxStartIndex : this.collisionBoxArray.length;
    var iconBoxEndIndex = iconCollisionFeature ? iconCollisionFeature.boxEndIndex : this.collisionBoxArray.length;
    if (iconQuadEndIndex > SymbolBucket.MAX_QUADS) util.warnOnce("Too many symbols being rendered in a tile. See https://github.com/mapbox/mapbox-gl-js/issues/2907");
    if (glyphQuadEndIndex > SymbolBucket.MAX_QUADS) util.warnOnce("Too many glyphs being rendered in a tile. See https://github.com/mapbox/mapbox-gl-js/issues/2907");

    return this.symbolInstancesArray.emplaceBack(
        textBoxStartIndex,
        textBoxEndIndex,
        iconBoxStartIndex,
        iconBoxEndIndex,
        glyphQuadStartIndex,
        glyphQuadEndIndex,
        iconQuadStartIndex,
        iconQuadEndIndex,
        anchor.x,
        anchor.y,
        index);
};

SymbolBucket.prototype.addSymbolQuad = function(symbolQuad) {
    return this.symbolQuadsArray.emplaceBack(
        // anchorPoints
        symbolQuad.anchorPoint.x,
        symbolQuad.anchorPoint.y,
        // corners
        symbolQuad.tl.x,
        symbolQuad.tl.y,
        symbolQuad.tr.x,
        symbolQuad.tr.y,
        symbolQuad.bl.x,
        symbolQuad.bl.y,
        symbolQuad.br.x,
        symbolQuad.br.y,
        // texture
        symbolQuad.tex.h,
        symbolQuad.tex.w,
        symbolQuad.tex.x,
        symbolQuad.tex.y,
        //angle
        symbolQuad.anchorAngle,
        symbolQuad.glyphAngle,
        // scales
        symbolQuad.maxScale,
        symbolQuad.minScale);
};

},{"../../symbol/anchor":367,"../../symbol/clip_line":369,"../../symbol/collision_feature":371,"../../symbol/get_anchors":373,"../../symbol/mergelines":376,"../../symbol/quads":377,"../../symbol/resolve_text":378,"../../symbol/shaping":379,"../../util/token":417,"../../util/util":418,"../bucket":305,"../load_geometry":313,"point-geometry":919}],310:[function(require,module,exports){
'use strict';

module.exports = Buffer;

/**
 * The `Buffer` class turns a `StructArray` into a WebGL buffer. Each member of the StructArray's
 * Struct type is converted to a WebGL atribute.
 *
 * @class Buffer
 * @private
 * @param {object} array A serialized StructArray.
 * @param {object} arrayType A serialized StructArrayType.
 * @param {BufferType} type
 */
function Buffer(array, arrayType, type) {
    this.arrayBuffer = array.arrayBuffer;
    this.length = array.length;
    this.attributes = arrayType.members;
    this.itemSize = arrayType.bytesPerElement;
    this.type = type;
    this.arrayType = arrayType;
}

/**
 * Bind this buffer to a WebGL context.
 * @private
 * @param gl The WebGL context
 */
Buffer.prototype.bind = function(gl) {
    var type = gl[this.type];

    if (!this.buffer) {
        this.buffer = gl.createBuffer();
        gl.bindBuffer(type, this.buffer);
        gl.bufferData(type, this.arrayBuffer, gl.STATIC_DRAW);

        // dump array buffer once it's bound to gl
        this.arrayBuffer = null;
    } else {
        gl.bindBuffer(type, this.buffer);
    }
};

/**
 * @enum {string} AttributeType
 * @private
 * @readonly
 */
var AttributeType = {
    Int8:   'BYTE',
    Uint8:  'UNSIGNED_BYTE',
    Int16:  'SHORT',
    Uint16: 'UNSIGNED_SHORT'
};

/**
 * Set the attribute pointers in a WebGL context
 * @private
 * @param gl The WebGL context
 * @param program The active WebGL program
 */
Buffer.prototype.setVertexAttribPointers = function(gl, program) {
    for (var j = 0; j < this.attributes.length; j++) {
        var member = this.attributes[j];
        var attribIndex = program[member.name];

        if (attribIndex !== undefined) {
            gl.vertexAttribPointer(
                attribIndex,
                member.components,
                gl[AttributeType[member.type]],
                false,
                this.arrayType.bytesPerElement,
                member.offset
            );
        }
    }
};

/**
 * Destroy the GL buffer bound to the given WebGL context
 * @private
 * @param gl The WebGL context
 */
Buffer.prototype.destroy = function(gl) {
    if (this.buffer) {
        gl.deleteBuffer(this.buffer);
    }
};

/**
 * @enum {string} BufferType
 * @private
 * @readonly
 */
Buffer.BufferType = {
    VERTEX: 'ARRAY_BUFFER',
    ELEMENT: 'ELEMENT_ARRAY_BUFFER'
};

},{}],311:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var Buffer = require('./buffer');
var VertexArrayObject = require('../render/vertex_array_object');

module.exports = BufferGroup;

function BufferGroup(arrayGroup, arrayTypes) {
    this.layoutVertexBuffer = new Buffer(arrayGroup.layoutVertexArray,
        arrayTypes.layoutVertexArrayType, Buffer.BufferType.VERTEX);

    if (arrayGroup.elementArray) {
        this.elementBuffer = new Buffer(arrayGroup.elementArray,
            arrayTypes.elementArrayType, Buffer.BufferType.ELEMENT);
    }

    var vaos = this.vaos = {};
    var secondVaos;

    if (arrayGroup.elementArray2) {
        this.elementBuffer2 = new Buffer(arrayGroup.elementArray2,
            arrayTypes.elementArrayType2, Buffer.BufferType.ELEMENT);
        secondVaos = this.secondVaos = {};
    }

    this.paintVertexBuffers = util.mapObject(arrayGroup.paintVertexArrays, function(array, name) {
        vaos[name] = new VertexArrayObject();
        if (arrayGroup.elementArray2) {
            secondVaos[name] = new VertexArrayObject();
        }
        return new Buffer(array, arrayTypes.paintVertexArrayTypes[name], Buffer.BufferType.VERTEX);
    });
}

BufferGroup.prototype.destroy = function(gl) {
    this.layoutVertexBuffer.destroy(gl);
    if (this.elementBuffer) {
        this.elementBuffer.destroy(gl);
    }
    if (this.elementBuffer2) {
        this.elementBuffer2.destroy(gl);
    }
    for (var n in this.paintVertexBuffers) {
        this.paintVertexBuffers[n].destroy(gl);
    }
    for (var j in this.vaos) {
        this.vaos[j].destroy(gl);
    }
    for (var k in this.secondVaos) {
        this.secondVaos[k].destroy(gl);
    }
};

},{"../render/vertex_array_object":333,"../util/util":418,"./buffer":310}],312:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');
var loadGeometry = require('./load_geometry');
var EXTENT = require('./bucket').EXTENT;
var featureFilter = require('feature-filter');
var StructArrayType = require('../util/struct_array');
var Grid = require('grid-index');
var DictionaryCoder = require('../util/dictionary_coder');
var vt = require('vector-tile');
var Protobuf = require('pbf');
var GeoJSONFeature = require('../util/vectortile_to_geojson');
var arraysIntersect = require('../util/util').arraysIntersect;

var intersection = require('../util/intersection_tests');
var multiPolygonIntersectsBufferedMultiPoint = intersection.multiPolygonIntersectsBufferedMultiPoint;
var multiPolygonIntersectsMultiPolygon = intersection.multiPolygonIntersectsMultiPolygon;
var multiPolygonIntersectsBufferedMultiLine = intersection.multiPolygonIntersectsBufferedMultiLine;


var FeatureIndexArray = new StructArrayType({
    members: [
        // the index of the feature in the original vectortile
        { type: 'Uint32', name: 'featureIndex' },
        // the source layer the feature appears in
        { type: 'Uint16', name: 'sourceLayerIndex' },
        // the bucket the feature appears in
        { type: 'Uint16', name: 'bucketIndex' }
    ]});

module.exports = FeatureIndex;

function FeatureIndex(coord, overscaling, collisionTile) {
    if (coord.grid) {
        var serialized = coord;
        var rawTileData = overscaling;
        coord = serialized.coord;
        overscaling = serialized.overscaling;
        this.grid = new Grid(serialized.grid);
        this.featureIndexArray = new FeatureIndexArray(serialized.featureIndexArray);
        this.rawTileData = rawTileData;
        this.bucketLayerIDs = serialized.bucketLayerIDs;
    } else {
        this.grid = new Grid(EXTENT, 16, 0);
        this.featureIndexArray = new FeatureIndexArray();
    }
    this.coord = coord;
    this.overscaling = overscaling;
    this.x = coord.x;
    this.y = coord.y;
    this.z = coord.z - Math.log(overscaling) / Math.LN2;
    this.setCollisionTile(collisionTile);
}

FeatureIndex.prototype.insert = function(feature, featureIndex, sourceLayerIndex, bucketIndex) {
    var key = this.featureIndexArray.length;
    this.featureIndexArray.emplaceBack(featureIndex, sourceLayerIndex, bucketIndex);
    var geometry = loadGeometry(feature);

    for (var r = 0; r < geometry.length; r++) {
        var ring = geometry[r];

        var bbox = [Infinity, Infinity, -Infinity, -Infinity];
        for (var i = 0; i < ring.length; i++) {
            var p = ring[i];
            bbox[0] = Math.min(bbox[0], p.x);
            bbox[1] = Math.min(bbox[1], p.y);
            bbox[2] = Math.max(bbox[2], p.x);
            bbox[3] = Math.max(bbox[3], p.y);
        }

        this.grid.insert(key, bbox[0], bbox[1], bbox[2], bbox[3]);
    }
};

FeatureIndex.prototype.setCollisionTile = function(collisionTile) {
    this.collisionTile = collisionTile;
};

FeatureIndex.prototype.serialize = function() {
    var data = {
        coord: this.coord,
        overscaling: this.overscaling,
        grid: this.grid.toArrayBuffer(),
        featureIndexArray: this.featureIndexArray.serialize(),
        bucketLayerIDs: this.bucketLayerIDs
    };
    return {
        data: data,
        transferables: [data.grid, data.featureIndexArray.arrayBuffer]
    };
};

function translateDistance(translate) {
    return Math.sqrt(translate[0] * translate[0] + translate[1] * translate[1]);
}

// Finds features in this tile at a particular position.
FeatureIndex.prototype.query = function(args, styleLayers) {
    if (!this.vtLayers) {
        this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
        this.sourceLayerCoder = new DictionaryCoder(this.vtLayers ? Object.keys(this.vtLayers).sort() : ['_geojsonTileLayer']);
    }

    var result = {};

    var params = args.params || {},
        pixelsToTileUnits = EXTENT / args.tileSize / args.scale,
        filter = featureFilter(params.filter);

    // Features are indexed their original geometries. The rendered geometries may
    // be buffered, translated or offset. Figure out how much the search radius needs to be
    // expanded by to include these features.
    var additionalRadius = 0;
    for (var id in styleLayers) {
        var styleLayer = styleLayers[id];
        var paint = styleLayer.paint;

        var styleLayerDistance = 0;
        if (styleLayer.type === 'line') {
            styleLayerDistance = getLineWidth(paint) / 2 + Math.abs(paint['line-offset']) + translateDistance(paint['line-translate']);
        } else if (styleLayer.type === 'fill') {
            styleLayerDistance = translateDistance(paint['fill-translate']);
        } else if (styleLayer.type === 'circle') {
            styleLayerDistance = paint['circle-radius'] + translateDistance(paint['circle-translate']);
        }
        additionalRadius = Math.max(additionalRadius, styleLayerDistance * pixelsToTileUnits);
    }

    var queryGeometry = args.queryGeometry.map(function(q) {
        return q.map(function(p) {
            return new Point(p.x, p.y);
        });
    });

    var minX = Infinity;
    var minY = Infinity;
    var maxX = -Infinity;
    var maxY = -Infinity;
    for (var i = 0; i < queryGeometry.length; i++) {
        var ring = queryGeometry[i];
        for (var k = 0; k < ring.length; k++) {
            var p = ring[k];
            minX = Math.min(minX, p.x);
            minY = Math.min(minY, p.y);
            maxX = Math.max(maxX, p.x);
            maxY = Math.max(maxY, p.y);
        }
    }

    var matching = this.grid.query(minX - additionalRadius, minY - additionalRadius, maxX + additionalRadius, maxY + additionalRadius);
    matching.sort(topDownFeatureComparator);
    this.filterMatching(result, matching, this.featureIndexArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);

    var matchingSymbols = this.collisionTile.queryRenderedSymbols(minX, minY, maxX, maxY, args.scale);
    matchingSymbols.sort();
    this.filterMatching(result, matchingSymbols, this.collisionTile.collisionBoxArray, queryGeometry, filter, params.layers, styleLayers, args.bearing, pixelsToTileUnits);

    return result;
};

function topDownFeatureComparator(a, b) {
    return b - a;
}

function getLineWidth(paint) {
    if (paint['line-gap-width'] > 0) {
        return paint['line-gap-width'] + 2 * paint['line-width'];
    } else {
        return paint['line-width'];
    }
}

FeatureIndex.prototype.filterMatching = function(result, matching, array, queryGeometry, filter, filterLayerIDs, styleLayers, bearing, pixelsToTileUnits) {
    var previousIndex;
    for (var k = 0; k < matching.length; k++) {
        var index = matching[k];

        // don't check the same feature more than once
        if (index === previousIndex) continue;
        previousIndex = index;

        var match = array.get(index);

        var layerIDs = this.bucketLayerIDs[match.bucketIndex];
        if (filterLayerIDs && !arraysIntersect(filterLayerIDs, layerIDs)) continue;

        var sourceLayerName = this.sourceLayerCoder.decode(match.sourceLayerIndex);
        var sourceLayer = this.vtLayers[sourceLayerName];
        var feature = sourceLayer.feature(match.featureIndex);

        if (!filter(feature)) continue;

        var geometry = null;

        for (var l = 0; l < layerIDs.length; l++) {
            var layerID = layerIDs[l];

            if (filterLayerIDs && filterLayerIDs.indexOf(layerID) < 0) {
                continue;
            }

            var styleLayer = styleLayers[layerID];
            if (!styleLayer) continue;

            var translatedPolygon;
            if (styleLayer.type !== 'symbol') {
                // all symbols already match the style

                if (!geometry) geometry = loadGeometry(feature);

                var paint = styleLayer.paint;

                if (styleLayer.type === 'line') {
                    translatedPolygon = translate(queryGeometry,
                            paint['line-translate'], paint['line-translate-anchor'],
                            bearing, pixelsToTileUnits);
                    var halfWidth = getLineWidth(paint) / 2 * pixelsToTileUnits;
                    if (paint['line-offset']) {
                        geometry = offsetLine(geometry, paint['line-offset'] * pixelsToTileUnits);
                    }
                    if (!multiPolygonIntersectsBufferedMultiLine(translatedPolygon, geometry, halfWidth)) continue;

                } else if (styleLayer.type === 'fill') {
                    translatedPolygon = translate(queryGeometry,
                            paint['fill-translate'], paint['fill-translate-anchor'],
                            bearing, pixelsToTileUnits);
                    if (!multiPolygonIntersectsMultiPolygon(translatedPolygon, geometry)) continue;

                } else if (styleLayer.type === 'circle') {
                    translatedPolygon = translate(queryGeometry,
                            paint['circle-translate'], paint['circle-translate-anchor'],
                            bearing, pixelsToTileUnits);
                    var circleRadius = paint['circle-radius'] * pixelsToTileUnits;
                    if (!multiPolygonIntersectsBufferedMultiPoint(translatedPolygon, geometry, circleRadius)) continue;
                }
            }

            var geojsonFeature = new GeoJSONFeature(feature, this.z, this.x, this.y);
            geojsonFeature.layer = styleLayer.serialize({
                includeRefProperties: true
            });
            var layerResult = result[layerID];
            if (layerResult === undefined) {
                layerResult = result[layerID] = [];
            }
            layerResult.push(geojsonFeature);
        }
    }
};

function translate(queryGeometry, translate, translateAnchor, bearing, pixelsToTileUnits) {
    if (!translate[0] && !translate[1]) {
        return queryGeometry;
    }

    translate = Point.convert(translate);

    if (translateAnchor === "viewport") {
        translate._rotate(-bearing);
    }

    var translated = [];
    for (var i = 0; i < queryGeometry.length; i++) {
        var ring = queryGeometry[i];
        var translatedRing = [];
        for (var k = 0; k < ring.length; k++) {
            translatedRing.push(ring[k].sub(translate._mult(pixelsToTileUnits)));
        }
        translated.push(translatedRing);
    }
    return translated;
}

function offsetLine(rings, offset) {
    var newRings = [];
    var zero = new Point(0, 0);
    for (var k = 0; k < rings.length; k++) {
        var ring = rings[k];
        var newRing = [];
        for (var i = 0; i < ring.length; i++) {
            var a = ring[i - 1];
            var b = ring[i];
            var c = ring[i + 1];
            var aToB = i === 0 ? zero : b.sub(a)._unit()._perp();
            var bToC = i === ring.length - 1 ? zero : c.sub(b)._unit()._perp();
            var extrude = aToB._add(bToC)._unit();

            var cosHalfAngle = extrude.x * bToC.x + extrude.y * bToC.y;
            extrude._mult(1 / cosHalfAngle);

            newRing.push(extrude._mult(offset)._add(b));
        }
        newRings.push(newRing);
    }
    return newRings;
}

},{"../util/dictionary_coder":408,"../util/intersection_tests":413,"../util/struct_array":416,"../util/util":418,"../util/vectortile_to_geojson":419,"./bucket":305,"./load_geometry":313,"feature-filter":98,"grid-index":259,"pbf":465,"point-geometry":919,"vector-tile":1002}],313:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var EXTENT = require('./bucket').EXTENT;
var assert = require('assert');


// These bounds define the minimum and maximum supported coordinate values.
// While visible coordinates are within [0, EXTENT], tiles may theoretically
// contain cordinates within [-Infinity, Infinity]. Our range is limited by the
// number of bits used to represent the coordinate.
function createBounds(bits) {
    return {
        min: -1 * Math.pow(2, bits - 1),
        max: Math.pow(2, bits - 1) - 1
    };
}

var boundsLookup = {
    15: createBounds(15),
    16: createBounds(16)
};

/**
 * Loads a geometry from a VectorTileFeature and scales it to the common extent
 * used internally.
 * @param {VectorTileFeature} feature
 * @param {number} [bits=16] The number of signed integer bits available to store
 *   each coordinate. A warning will be issued if any coordinate will not fits
 *   in the specified number of bits.
 * @private
 */
module.exports = function loadGeometry(feature, bits) {
    var bounds = boundsLookup[bits || 16];
    assert(bounds);

    var scale = EXTENT / feature.extent;
    var geometry = feature.loadGeometry();
    for (var r = 0; r < geometry.length; r++) {
        var ring = geometry[r];
        for (var p = 0; p < ring.length; p++) {
            var point = ring[p];
            // round here because mapbox-gl-native uses integers to represent
            // points and we need to do the same to avoid renering differences.
            point.x = Math.round(point.x * scale);
            point.y = Math.round(point.y * scale);

            if (point.x < bounds.min || point.x > bounds.max || point.y < bounds.min || point.y > bounds.max) {
                util.warnOnce('Geometry exceeds allowed extent, reduce your vector tile buffer size');
            }
        }
    }
    return geometry;
};

},{"../util/util":418,"./bucket":305,"assert":9}],314:[function(require,module,exports){
'use strict';

module.exports = Coordinate;

/**
 * A coordinate is a column, row, zoom combination, often used
 * as the data component of a tile.
 *
 * @param {number} column
 * @param {number} row
 * @param {number} zoom
 * @private
 */
function Coordinate(column, row, zoom) {
    this.column = column;
    this.row = row;
    this.zoom = zoom;
}

Coordinate.prototype = {

    /**
     * Create a clone of this coordinate that can be mutated without
     * changing the original coordinate
     *
     * @returns {Coordinate} clone
     * @private
     * var coord = new Coordinate(0, 0, 0);
     * var c2 = coord.clone();
     * // since coord is cloned, modifying a property of c2 does
     * // not modify it.
     * c2.zoom = 2;
     */
    clone: function() {
        return new Coordinate(this.column, this.row, this.zoom);
    },

    /**
     * Zoom this coordinate to a given zoom level. This returns a new
     * coordinate object, not mutating the old one.
     *
     * @param {number} zoom
     * @returns {Coordinate} zoomed coordinate
     * @private
     * @example
     * var coord = new Coordinate(0, 0, 0);
     * var c2 = coord.zoomTo(1);
     * c2 // equals new Coordinate(0, 0, 1);
     */
    zoomTo: function(zoom) { return this.clone()._zoomTo(zoom); },

    /**
     * Subtract the column and row values of this coordinate from those
     * of another coordinate. The other coordinat will be zoomed to the
     * same level as `this` before the subtraction occurs
     *
     * @param {Coordinate} c other coordinate
     * @returns {Coordinate} result
     * @private
     */
    sub: function(c) { return this.clone()._sub(c); },

    _zoomTo: function(zoom) {
        var scale = Math.pow(2, zoom - this.zoom);
        this.column *= scale;
        this.row *= scale;
        this.zoom = zoom;
        return this;
    },

    _sub: function(c) {
        c = c.zoomTo(this.zoom);
        this.column -= c.column;
        this.row -= c.row;
        return this;
    }
};

},{}],315:[function(require,module,exports){
'use strict';

module.exports = LngLat;

var wrap = require('../util/util').wrap;

/**
 * A `LngLat` object represents a given longitude and latitude coordinate, measured in degrees.
 *
 * Mapbox GL uses longitude, latitude coordinate order (as opposed to latitude, longitude) to match GeoJSON.
 *
 * Note that any Mapbox GL method that accepts a `LngLat` object as an argument or option
 * can also accept an `Array` of two numbers and will perform an implicit conversion.
 * This flexible type is documented as [`LngLatLike`](#LngLatLike).
 *
 * @class LngLat
 * @param {number} lng Longitude, measured in degrees.
 * @param {number} lat Latitude, measured in degrees.
 * @example
 * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
 */
function LngLat(lng, lat) {
    if (isNaN(lng) || isNaN(lat)) {
        throw new Error('Invalid LngLat object: (' + lng + ', ' + lat + ')');
    }
    this.lng = +lng;
    this.lat = +lat;
    if (this.lat > 90 || this.lat < -90) {
        throw new Error('Invalid LngLat latitude value: must be between -90 and 90');
    }
}

/**
 * Returns a new `LngLat` object whose longitude is wrapped to the range (-180, 180).
 *
 * @returns {LngLat} The wrapped `LngLat` object.
 * @example
 * var ll = new mapboxgl.LngLat(286.0251, 40.7736);
 * var wrapped = ll.wrap();
 * wrapped.lng; // = -73.9749
 */
LngLat.prototype.wrap = function () {
    return new LngLat(wrap(this.lng, -180, 180), this.lat);
};

/**
 * Returns the coordinates represented as an array of two numbers.
 *
 * @returns {Array<number>} The coordinates represeted as an array of longitude and latitude.
 * @example
 * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
 * ll.toArray(); // = [-73.9749, 40.7736]
 */
LngLat.prototype.toArray = function () {
    return [this.lng, this.lat];
};

/**
 * Returns the coordinates represent as a string.
 *
 * @returns {string} The coordinates represented as a string of the format `'LngLat(lng, lat)'`.
 * @example
 * var ll = new mapboxgl.LngLat(-73.9749, 40.7736);
 * ll.toString(); // = "LngLat(-73.9749, 40.7736)"
 */
LngLat.prototype.toString = function () {
    return 'LngLat(' + this.lng + ', ' + this.lat + ')';
};

/**
 * Converts an array of two numbers to a `LngLat` object.
 *
 * If a `LngLat` object is passed in, the function returns it unchanged.
 *
 * @param {LngLatLike} input An array of two numbers to convert, or a `LngLat` object to return.
 * @returns {LngLat} A new `LngLat` object, if a conversion occurred, or the original `LngLat` object.
 * @example
 * var arr = [-73.9749, 40.7736];
 * var ll = mapboxgl.LngLat.convert(arr);
 * ll;   // = LngLat {lng: -73.9749, lat: 40.7736}
 */
LngLat.convert = function (input) {
    if (input instanceof LngLat) {
        return input;
    }
    if (Array.isArray(input)) {
        return new LngLat(input[0], input[1]);
    }
    return input;
};

},{"../util/util":418}],316:[function(require,module,exports){
'use strict';

module.exports = LngLatBounds;

var LngLat = require('./lng_lat');

/**
 * A `LngLatBounds` object represents a geographical bounding box,
 * defined by its southwest and northeast points in longitude and latitude.
 *
 * If no arguments are provided to the constructor, a `null` bounding box is created.
 *
 * Note that any Mapbox GL method that accepts a `LngLatBounds` object as an argument or option
 * can also accept an `Array` of two [`LngLatLike`](#LngLatLike) constructs and will perform an implicit conversion.
 * This flexible type is documented as [`LngLatBoundsLike`](#LngLatBoundsLike).
 *
 * @class LngLatBounds
 * @param {LngLatLike} sw The southwest corner of the bounding box.
 * @param {LngLatLike} ne The northeast corner of the bounding box.
 * @example
 * var sw = new mapboxgl.LngLat(-73.9876, 40.7661);
 * var ne = new mapboxgl.LngLat(-73.9397, 40.8002);
 * var llb = new mapboxgl.LngLatBounds(sw, ne);
 */
function LngLatBounds(sw, ne) {
    if (!sw) {
        return;
    } else if (ne) {
        this.extend(sw).extend(ne);
    } else if (sw.length === 4) {
        this.extend([sw[0], sw[1]]).extend([sw[2], sw[3]]);
    } else {
        this.extend(sw[0]).extend(sw[1]);
    }
}

LngLatBounds.prototype = {

    /**
     * Extends the bounding box to include an area represented by a `LngLat` or `LngLatBounds`.
     *
     * @param {LngLatLike|LngLatBoundsLike} obj The area that the bounding box will extend to include.
     * @returns {LngLatBounds} `this`
     */
    extend: function(obj) {
        var sw = this._sw,
            ne = this._ne,
            sw2, ne2;

        if (obj instanceof LngLat) {
            sw2 = obj;
            ne2 = obj;

        } else if (obj instanceof LngLatBounds) {
            sw2 = obj._sw;
            ne2 = obj._ne;

            if (!sw2 || !ne2) return this;

        } else {
            return obj ? this.extend(LngLat.convert(obj) || LngLatBounds.convert(obj)) : this;
        }

        if (!sw && !ne) {
            this._sw = new LngLat(sw2.lng, sw2.lat);
            this._ne = new LngLat(ne2.lng, ne2.lat);

        } else {
            sw.lng = Math.min(sw2.lng, sw.lng);
            sw.lat = Math.min(sw2.lat, sw.lat);
            ne.lng = Math.max(ne2.lng, ne.lng);
            ne.lat = Math.max(ne2.lat, ne.lat);
        }

        return this;
    },

    /**
     * Returns the geographical coordinate equidistant from the bounding box's corners.
     *
     * @returns {LngLat} The bounding box's center.
     * @example
     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
     * llb.getCenter(); // = LngLat {lng: -73.96365, lat: 40.78315}
     */
    getCenter: function() {
        return new LngLat((this._sw.lng + this._ne.lng) / 2, (this._sw.lat + this._ne.lat) / 2);
    },

    /**
     * Returns the southwest corner of the bounding box.
     *
     * @returns {LngLat} The southwest corner of the bounding box.
     */
    getSouthWest: function() { return this._sw; },

    /**
    * Returns the northeast corner of the bounding box.
    *
    * @returns {LngLat} The northeast corner of the bounding box.
     */
    getNorthEast: function() { return this._ne; },

    /**
    * Returns the northwest corner of the bounding box.
    *
    * @returns {LngLat} The northwest corner of the bounding box.
     */
    getNorthWest: function() { return new LngLat(this.getWest(), this.getNorth()); },

    /**
    * Returns the southeast corner of the bounding box.
    *
    * @returns {LngLat} The southeast corner of the bounding box.
     */
    getSouthEast: function() { return new LngLat(this.getEast(), this.getSouth()); },

    /**
    * Returns the west edge of the bounding box.
    *
    * @returns {LngLat} The west edge of the bounding box.
     */
    getWest:  function() { return this._sw.lng; },

    /**
    * Returns the south edge of the bounding box.
    *
    * @returns {LngLat} The south edge of the bounding box.
     */
    getSouth: function() { return this._sw.lat; },

    /**
    * Returns the east edge of the bounding box.
    *
    * @returns {LngLat} The east edge of the bounding box.
     */
    getEast:  function() { return this._ne.lng; },

    /**
    * Returns the north edge of the bounding box.
    *
    * @returns {LngLat} The north edge of the bounding box.
     */
    getNorth: function() { return this._ne.lat; },

    /**
     * Returns the bounding box represented as an array.
     *
     * @returns {Array<Array<number>>} The bounding box represented as an array, consisting of the
     *   southwest and northeast coordinates of the bounding represented as arrays of numbers.
     * @example
     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
     * llb.toArray(); // = [[-73.9876, 40.7661], [-73.9397, 40.8002]]
     */
    toArray: function () {
        return [this._sw.toArray(), this._ne.toArray()];
    },

    /**
     * Return the bounding box represented as a string.
     *
     * @returns {string} The bounding box represents as a string of the format
     *   `'LngLatBounds(LngLat(lng, lat), LngLat(lng, lat))'`.
     * @example
     * var llb = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002]);
     * llb.toString(); // = "LngLatBounds(LngLat(-73.9876, 40.7661), LngLat(-73.9397, 40.8002))"
     */
    toString: function () {
        return 'LngLatBounds(' + this._sw.toString() + ', ' + this._ne.toString() + ')';
    }
};

/**
 * Converts an array to a `LngLatBounds` object.
 *
 * If a `LngLatBounds` object is passed in, the function returns it unchanged.
 *
 * Internally, the function calls `LngLat#convert` to convert arrays to `LngLat` values.
 *
 * @param {LngLatBoundsLike} input An array of two coordinates to convert, or a `LngLatBounds` object to return.
 * @returns {LngLatBounds} A new `LngLatBounds` object, if a conversion occurred, or the original `LngLatBounds` object.
 * @example
 * var arr = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
 * var llb = mapboxgl.LngLatBounds.convert(arr);
 * llb;   // = LngLatBounds {_sw: LngLat {lng: -73.9876, lat: 40.7661}, _ne: LngLat {lng: -73.9397, lat: 40.8002}}
 */
LngLatBounds.convert = function (input) {
    if (!input || input instanceof LngLatBounds) return input;
    return new LngLatBounds(input);
};

},{"./lng_lat":315}],317:[function(require,module,exports){
'use strict';

var LngLat = require('./lng_lat'),
    Point = require('point-geometry'),
    Coordinate = require('./coordinate'),
    wrap = require('../util/util').wrap,
    interp = require('../util/interpolate'),
    TileCoord = require('../source/tile_coord'),
    EXTENT = require('../data/bucket').EXTENT,
    glmatrix = require('gl-matrix');

var vec4 = glmatrix.vec4,
    mat4 = glmatrix.mat4,
    mat2 = glmatrix.mat2;

module.exports = Transform;

/**
 * A single transform, generally used for a single tile to be
 * scaled, rotated, and zoomed.
 *
 * @param {number} minZoom
 * @param {number} maxZoom
 * @private
 */
function Transform(minZoom, maxZoom) {
    this.tileSize = 512; // constant

    this._minZoom = minZoom || 0;
    this._maxZoom = maxZoom || 22;

    this.latRange = [-85.05113, 85.05113];

    this.width = 0;
    this.height = 0;
    this._center = new LngLat(0, 0);
    this.zoom = 0;
    this.angle = 0;
    this._altitude = 1.5;
    this._pitch = 0;
    this._unmodified = true;
}

Transform.prototype = {
    get minZoom() { return this._minZoom; },
    set minZoom(zoom) {
        if (this._minZoom === zoom) return;
        this._minZoom = zoom;
        this.zoom = Math.max(this.zoom, zoom);
    },

    get maxZoom() { return this._maxZoom; },
    set maxZoom(zoom) {
        if (this._maxZoom === zoom) return;
        this._maxZoom = zoom;
        this.zoom = Math.min(this.zoom, zoom);
    },

    get worldSize() {
        return this.tileSize * this.scale;
    },

    get centerPoint() {
        return this.size._div(2);
    },

    get size() {
        return new Point(this.width, this.height);
    },

    get bearing() {
        return -this.angle / Math.PI * 180;
    },
    set bearing(bearing) {
        var b = -wrap(bearing, -180, 180) * Math.PI / 180;
        if (this.angle === b) return;
        this._unmodified = false;
        this.angle = b;
        this._calcMatrices();

        // 2x2 matrix for rotating points
        this.rotationMatrix = mat2.create();
        mat2.rotate(this.rotationMatrix, this.rotationMatrix, this.angle);
    },

    get pitch() {
        return this._pitch / Math.PI * 180;
    },
    set pitch(pitch) {
        var p = Math.min(60, pitch) / 180 * Math.PI;
        if (this._pitch === p) return;
        this._unmodified = false;
        this._pitch = p;
        this._calcMatrices();
    },

    get altitude() {
        return this._altitude;
    },
    set altitude(altitude) {
        var a = Math.max(0.75, altitude);
        if (this._altitude === a) return;
        this._unmodified = false;
        this._altitude = a;
        this._calcMatrices();
    },

    get zoom() { return this._zoom; },
    set zoom(zoom) {
        var z = Math.min(Math.max(zoom, this.minZoom), this.maxZoom);
        if (this._zoom === z) return;
        this._unmodified = false;
        this._zoom = z;
        this.scale = this.zoomScale(z);
        this.tileZoom = Math.floor(z);
        this.zoomFraction = z - this.tileZoom;
        this._calcMatrices();
        this._constrain();
    },

    get center() { return this._center; },
    set center(center) {
        if (center.lat === this._center.lat && center.lng === this._center.lng) return;
        this._unmodified = false;
        this._center = center;
        this._calcMatrices();
        this._constrain();
    },

    /**
     * Return a zoom level that will cover all tiles the transform
     * @param {Object} options
     * @param {number} options.tileSize
     * @param {boolean} options.roundZoom
     * @returns {number} zoom level
     * @private
     */
    coveringZoomLevel: function(options) {
        return (options.roundZoom ? Math.round : Math.floor)(
            this.zoom + this.scaleZoom(this.tileSize / options.tileSize)
        );
    },

    /**
     * Return all coordinates that could cover this transform for a covering
     * zoom level.
     * @param {Object} options
     * @param {number} options.tileSize
     * @param {number} options.minzoom
     * @param {number} options.maxzoom
     * @param {boolean} options.roundZoom
     * @param {boolean} options.reparseOverscaled
     * @returns {Array<Tile>} tiles
     * @private
     */
    coveringTiles: function(options) {
        var z = this.coveringZoomLevel(options);
        var actualZ = z;

        if (z < options.minzoom) return [];
        if (z > options.maxzoom) z = options.maxzoom;

        var tr = this,
            tileCenter = tr.locationCoordinate(tr.center)._zoomTo(z),
            centerPoint = new Point(tileCenter.column - 0.5, tileCenter.row - 0.5);

        return TileCoord.cover(z, [
            tr.pointCoordinate(new Point(0, 0))._zoomTo(z),
            tr.pointCoordinate(new Point(tr.width, 0))._zoomTo(z),
            tr.pointCoordinate(new Point(tr.width, tr.height))._zoomTo(z),
            tr.pointCoordinate(new Point(0, tr.height))._zoomTo(z)
        ], options.reparseOverscaled ? actualZ : z).sort(function(a, b) {
            return centerPoint.dist(a) - centerPoint.dist(b);
        });
    },

    resize: function(width, height) {
        this.width = width;
        this.height = height;

        this.pixelsToGLUnits = [2 / width, -2 / height];
        this._calcMatrices();
        this._constrain();
    },

    get unmodified() { return this._unmodified; },

    zoomScale: function(zoom) { return Math.pow(2, zoom); },
    scaleZoom: function(scale) { return Math.log(scale) / Math.LN2; },

    project: function(lnglat, worldSize) {
        return new Point(
            this.lngX(lnglat.lng, worldSize),
            this.latY(lnglat.lat, worldSize));
    },

    unproject: function(point, worldSize) {
        return new LngLat(
            this.xLng(point.x, worldSize),
            this.yLat(point.y, worldSize));
    },

    get x() { return this.lngX(this.center.lng); },
    get y() { return this.latY(this.center.lat); },

    get point() { return new Point(this.x, this.y); },

    /**
     * latitude to absolute x coord
     * @param {number} lon
     * @param {number} [worldSize=this.worldSize]
     * @returns {number} pixel coordinate
     * @private
     */
    lngX: function(lng, worldSize) {
        return (180 + lng) * (worldSize || this.worldSize) / 360;
    },
    /**
     * latitude to absolute y coord
     * @param {number} lat
     * @param {number} [worldSize=this.worldSize]
     * @returns {number} pixel coordinate
     * @private
     */
    latY: function(lat, worldSize) {
        var y = 180 / Math.PI * Math.log(Math.tan(Math.PI / 4 + lat * Math.PI / 360));
        return (180 - y) * (worldSize || this.worldSize) / 360;
    },

    xLng: function(x, worldSize) {
        return x * 360 / (worldSize || this.worldSize) - 180;
    },
    yLat: function(y, worldSize) {
        var y2 = 180 - y * 360 / (worldSize || this.worldSize);
        return 360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90;
    },

    panBy: function(offset) {
        var point = this.centerPoint._add(offset);
        this.center = this.pointLocation(point);
    },

    setLocationAtPoint: function(lnglat, point) {
        var c = this.locationCoordinate(lnglat);
        var coordAtPoint = this.pointCoordinate(point);
        var coordCenter = this.pointCoordinate(this.centerPoint);
        var translate = coordAtPoint._sub(c);
        this._unmodified = false;
        this.center = this.coordinateLocation(coordCenter._sub(translate));
    },

    /**
     * Given a location, return the screen point that corresponds to it
     * @param {LngLat} lnglat location
     * @returns {Point} screen point
     * @private
     */
    locationPoint: function(lnglat) {
        return this.coordinatePoint(this.locationCoordinate(lnglat));
    },

    /**
     * Given a point on screen, return its lnglat
     * @param {Point} p screen point
     * @returns {LngLat} lnglat location
     * @private
     */
    pointLocation: function(p) {
        return this.coordinateLocation(this.pointCoordinate(p));
    },

    /**
     * Given a geographical lnglat, return an unrounded
     * coordinate that represents it at this transform's zoom level and
     * worldsize.
     * @param {LngLat} lnglat
     * @returns {Coordinate}
     * @private
     */
    locationCoordinate: function(lnglat) {
        var k = this.zoomScale(this.tileZoom) / this.worldSize,
            ll = LngLat.convert(lnglat);

        return new Coordinate(
            this.lngX(ll.lng) * k,
            this.latY(ll.lat) * k,
            this.tileZoom);
    },

    /**
     * Given a Coordinate, return its geographical position.
     * @param {Coordinate} coord
     * @returns {LngLat} lnglat
     * @private
     */
    coordinateLocation: function(coord) {
        var worldSize = this.zoomScale(coord.zoom);
        return new LngLat(
            this.xLng(coord.column, worldSize),
            this.yLat(coord.row, worldSize));
    },

    pointCoordinate: function(p) {

        var targetZ = 0;
        // since we don't know the correct projected z value for the point,
        // unproject two points to get a line and then find the point on that
        // line with z=0

        var coord0 = [p.x, p.y, 0, 1];
        var coord1 = [p.x, p.y, 1, 1];

        vec4.transformMat4(coord0, coord0, this.pixelMatrixInverse);
        vec4.transformMat4(coord1, coord1, this.pixelMatrixInverse);

        var w0 = coord0[3];
        var w1 = coord1[3];
        var x0 = coord0[0] / w0;
        var x1 = coord1[0] / w1;
        var y0 = coord0[1] / w0;
        var y1 = coord1[1] / w1;
        var z0 = coord0[2] / w0;
        var z1 = coord1[2] / w1;


        var t = z0 === z1 ? 0 : (targetZ - z0) / (z1 - z0);
        var scale = this.worldSize / this.zoomScale(this.tileZoom);

        return new Coordinate(
            interp(x0, x1, t) / scale,
            interp(y0, y1, t) / scale,
            this.tileZoom);
    },

    /**
     * Given a coordinate, return the screen point that corresponds to it
     * @param {Coordinate} coord
     * @returns {Point} screen point
     * @private
     */
    coordinatePoint: function(coord) {
        var scale = this.worldSize / this.zoomScale(coord.zoom);
        var p = [coord.column * scale, coord.row * scale, 0, 1];
        vec4.transformMat4(p, p, this.pixelMatrix);
        return new Point(p[0] / p[3], p[1] / p[3]);
    },

    /**
     * Calculate the posMatrix that, given a tile coordinate, would be used to display the tile on a map.
     * @param {TileCoord|Coordinate} coord
     * @param {Number} maxZoom maximum source zoom to account for overscaling
     * @private
     */
    calculatePosMatrix: function(coord, maxZoom) {
        if (maxZoom === undefined) maxZoom = Infinity;
        if (coord instanceof TileCoord) coord = coord.toCoordinate(maxZoom);

        // Initialize model-view matrix that converts from the tile coordinates to screen coordinates.

        // if z > maxzoom then the tile is actually a overscaled maxzoom tile,
        // so calculate the matrix the maxzoom tile would use.
        var z = Math.min(coord.zoom, maxZoom);

        var scale = this.worldSize / Math.pow(2, z);
        var posMatrix = new Float64Array(16);

        mat4.identity(posMatrix);
        mat4.translate(posMatrix, posMatrix, [coord.column * scale, coord.row * scale, 0]);
        mat4.scale(posMatrix, posMatrix, [ scale / EXTENT, scale / EXTENT, 1 ]);
        mat4.multiply(posMatrix, this.projMatrix, posMatrix);

        return new Float32Array(posMatrix);
    },

    _constrain: function() {
        if (!this.center || !this.width || !this.height || this._constraining) return;

        this._constraining = true;

        var minY, maxY, minX, maxX, sy, sx, x2, y2,
            size = this.size,
            unmodified = this._unmodified;

        if (this.latRange) {
            minY = this.latY(this.latRange[1]);
            maxY = this.latY(this.latRange[0]);
            sy = maxY - minY < size.y ? size.y / (maxY - minY) : 0;
        }

        if (this.lngRange) {
            minX = this.lngX(this.lngRange[0]);
            maxX = this.lngX(this.lngRange[1]);
            sx = maxX - minX < size.x ? size.x / (maxX - minX) : 0;
        }

        // how much the map should scale to fit the screen into given latitude/longitude ranges
        var s = Math.max(sx || 0, sy || 0);

        if (s) {
            this.center = this.unproject(new Point(
                sx ? (maxX + minX) / 2 : this.x,
                sy ? (maxY + minY) / 2 : this.y));
            this.zoom += this.scaleZoom(s);
            this._unmodified = unmodified;
            this._constraining = false;
            return;
        }

        if (this.latRange) {
            var y = this.y,
                h2 = size.y / 2;

            if (y - h2 < minY) y2 = minY + h2;
            if (y + h2 > maxY) y2 = maxY - h2;
        }

        if (this.lngRange) {
            var x = this.x,
                w2 = size.x / 2;

            if (x - w2 < minX) x2 = minX + w2;
            if (x + w2 > maxX) x2 = maxX - w2;
        }

        // pan the map if the screen goes off the range
        if (x2 !== undefined || y2 !== undefined) {
            this.center = this.unproject(new Point(
                x2 !== undefined ? x2 : this.x,
                y2 !== undefined ? y2 : this.y));
        }

        this._unmodified = unmodified;
        this._constraining = false;
    },

    _calcMatrices: function() {
        if (!this.height) return;

        // Find the distance from the center point to the center top in altitude units using law of sines.
        var halfFov = Math.atan(0.5 / this.altitude);
        var topHalfSurfaceDistance = Math.sin(halfFov) * this.altitude / Math.sin(Math.PI / 2 - this._pitch - halfFov);

        // Calculate z value of the farthest fragment that should be rendered.
        var farZ = Math.cos(Math.PI / 2 - this._pitch) * topHalfSurfaceDistance + this.altitude;

        // matrix for conversion from location to GL coordinates (-1 .. 1)
        var m = new Float64Array(16);
        mat4.perspective(m, 2 * Math.atan((this.height / 2) / this.altitude), this.width / this.height, 0.1, farZ);
        mat4.translate(m, m, [0, 0, -this.altitude]);

        // After the rotateX, z values are in pixel units. Convert them to
        // altitude units. 1 altitude unit = the screen height.
        mat4.scale(m, m, [1, -1, 1 / this.height]);

        mat4.rotateX(m, m, this._pitch);
        mat4.rotateZ(m, m, this.angle);
        mat4.translate(m, m, [-this.x, -this.y, 0]);

        this.projMatrix = m;

        // matrix for conversion from location to screen coordinates
        m = mat4.create();
        mat4.scale(m, m, [this.width / 2, -this.height / 2, 1]);
        mat4.translate(m, m, [1, -1, 0]);
        this.pixelMatrix = mat4.multiply(new Float64Array(16), m, this.projMatrix);

        // inverse matrix for conversion from screen coordinaes to location
        m = mat4.invert(new Float64Array(16), this.pixelMatrix);
        if (!m) throw new Error("failed to invert matrix");
        this.pixelMatrixInverse = m;
    }
};

},{"../data/bucket":305,"../source/tile_coord":345,"../util/interpolate":412,"../util/util":418,"./coordinate":314,"./lng_lat":315,"gl-matrix":168,"point-geometry":919}],318:[function(require,module,exports){
'use strict';

// Font data From Hershey Simplex Font
// http://paulbourke.net/dataformats/hershey/
var simplexFont = {
    " ": [16, []],
    "!": [10, [5, 21, 5, 7, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
    "\"": [16, [4, 21, 4, 14, -1, -1, 12, 21, 12, 14]],
    "#": [21, [11, 25, 4, -7, -1, -1, 17, 25, 10, -7, -1, -1, 4, 12, 18, 12, -1, -1, 3, 6, 17, 6]],
    "$": [20, [8, 25, 8, -4, -1, -1, 12, 25, 12, -4, -1, -1, 17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
    "%": [24, [21, 21, 3, 0, -1, -1, 8, 21, 10, 19, 10, 17, 9, 15, 7, 14, 5, 14, 3, 16, 3, 18, 4, 20, 6, 21, 8, 21, 10, 20, 13, 19, 16, 19, 19, 20, 21, 21, -1, -1, 17, 7, 15, 6, 14, 4, 14, 2, 16, 0, 18, 0, 20, 1, 21, 3, 21, 5, 19, 7, 17, 7]],
    "&": [26, [23, 12, 23, 13, 22, 14, 21, 14, 20, 13, 19, 11, 17, 6, 15, 3, 13, 1, 11, 0, 7, 0, 5, 1, 4, 2, 3, 4, 3, 6, 4, 8, 5, 9, 12, 13, 13, 14, 14, 16, 14, 18, 13, 20, 11, 21, 9, 20, 8, 18, 8, 16, 9, 13, 11, 10, 16, 3, 18, 1, 20, 0, 22, 0, 23, 1, 23, 2]],
    "'": [10, [5, 19, 4, 20, 5, 21, 6, 20, 6, 18, 5, 16, 4, 15]],
    "(": [14, [11, 25, 9, 23, 7, 20, 5, 16, 4, 11, 4, 7, 5, 2, 7, -2, 9, -5, 11, -7]],
    ")": [14, [3, 25, 5, 23, 7, 20, 9, 16, 10, 11, 10, 7, 9, 2, 7, -2, 5, -5, 3, -7]],
    "*": [16, [8, 21, 8, 9, -1, -1, 3, 18, 13, 12, -1, -1, 13, 18, 3, 12]],
    "+": [26, [13, 18, 13, 0, -1, -1, 4, 9, 22, 9]],
    ",": [10, [6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
    "-": [26, [4, 9, 22, 9]],
    ".": [10, [5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
    "/": [22, [20, 25, 2, -7]],
    "0": [20, [9, 21, 6, 20, 4, 17, 3, 12, 3, 9, 4, 4, 6, 1, 9, 0, 11, 0, 14, 1, 16, 4, 17, 9, 17, 12, 16, 17, 14, 20, 11, 21, 9, 21]],
    "1": [20, [6, 17, 8, 18, 11, 21, 11, 0]],
    "2": [20, [4, 16, 4, 17, 5, 19, 6, 20, 8, 21, 12, 21, 14, 20, 15, 19, 16, 17, 16, 15, 15, 13, 13, 10, 3, 0, 17, 0]],
    "3": [20, [5, 21, 16, 21, 10, 13, 13, 13, 15, 12, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
    "4": [20, [13, 21, 3, 7, 18, 7, -1, -1, 13, 21, 13, 0]],
    "5": [20, [15, 21, 5, 21, 4, 12, 5, 13, 8, 14, 11, 14, 14, 13, 16, 11, 17, 8, 17, 6, 16, 3, 14, 1, 11, 0, 8, 0, 5, 1, 4, 2, 3, 4]],
    "6": [20, [16, 18, 15, 20, 12, 21, 10, 21, 7, 20, 5, 17, 4, 12, 4, 7, 5, 3, 7, 1, 10, 0, 11, 0, 14, 1, 16, 3, 17, 6, 17, 7, 16, 10, 14, 12, 11, 13, 10, 13, 7, 12, 5, 10, 4, 7]],
    "7": [20, [17, 21, 7, 0, -1, -1, 3, 21, 17, 21]],
    "8": [20, [8, 21, 5, 20, 4, 18, 4, 16, 5, 14, 7, 13, 11, 12, 14, 11, 16, 9, 17, 7, 17, 4, 16, 2, 15, 1, 12, 0, 8, 0, 5, 1, 4, 2, 3, 4, 3, 7, 4, 9, 6, 11, 9, 12, 13, 13, 15, 14, 16, 16, 16, 18, 15, 20, 12, 21, 8, 21]],
    "9": [20, [16, 14, 15, 11, 13, 9, 10, 8, 9, 8, 6, 9, 4, 11, 3, 14, 3, 15, 4, 18, 6, 20, 9, 21, 10, 21, 13, 20, 15, 18, 16, 14, 16, 9, 15, 4, 13, 1, 10, 0, 8, 0, 5, 1, 4, 3]],
    ":": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 5, 2, 4, 1, 5, 0, 6, 1, 5, 2]],
    ";": [10, [5, 14, 4, 13, 5, 12, 6, 13, 5, 14, -1, -1, 6, 1, 5, 0, 4, 1, 5, 2, 6, 1, 6, -1, 5, -3, 4, -4]],
    "<": [24, [20, 18, 4, 9, 20, 0]],
    "=": [26, [4, 12, 22, 12, -1, -1, 4, 6, 22, 6]],
    ">": [24, [4, 18, 20, 9, 4, 0]],
    "?": [18, [3, 16, 3, 17, 4, 19, 5, 20, 7, 21, 11, 21, 13, 20, 14, 19, 15, 17, 15, 15, 14, 13, 13, 12, 9, 10, 9, 7, -1, -1, 9, 2, 8, 1, 9, 0, 10, 1, 9, 2]],
    "@": [27, [18, 13, 17, 15, 15, 16, 12, 16, 10, 15, 9, 14, 8, 11, 8, 8, 9, 6, 11, 5, 14, 5, 16, 6, 17, 8, -1, -1, 12, 16, 10, 14, 9, 11, 9, 8, 10, 6, 11, 5, -1, -1, 18, 16, 17, 8, 17, 6, 19, 5, 21, 5, 23, 7, 24, 10, 24, 12, 23, 15, 22, 17, 20, 19, 18, 20, 15, 21, 12, 21, 9, 20, 7, 19, 5, 17, 4, 15, 3, 12, 3, 9, 4, 6, 5, 4, 7, 2, 9, 1, 12, 0, 15, 0, 18, 1, 20, 2, 21, 3, -1, -1, 19, 16, 18, 8, 18, 6, 19, 5]],
    "A": [18, [9, 21, 1, 0, -1, -1, 9, 21, 17, 0, -1, -1, 4, 7, 14, 7]],
    "B": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, -1, -1, 4, 11, 13, 11, 16, 10, 17, 9, 18, 7, 18, 4, 17, 2, 16, 1, 13, 0, 4, 0]],
    "C": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5]],
    "D": [21, [4, 21, 4, 0, -1, -1, 4, 21, 11, 21, 14, 20, 16, 18, 17, 16, 18, 13, 18, 8, 17, 5, 16, 3, 14, 1, 11, 0, 4, 0]],
    "E": [19, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11, -1, -1, 4, 0, 17, 0]],
    "F": [18, [4, 21, 4, 0, -1, -1, 4, 21, 17, 21, -1, -1, 4, 11, 12, 11]],
    "G": [21, [18, 16, 17, 18, 15, 20, 13, 21, 9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 18, 8, -1, -1, 13, 8, 18, 8]],
    "H": [22, [4, 21, 4, 0, -1, -1, 18, 21, 18, 0, -1, -1, 4, 11, 18, 11]],
    "I": [8, [4, 21, 4, 0]],
    "J": [16, [12, 21, 12, 5, 11, 2, 10, 1, 8, 0, 6, 0, 4, 1, 3, 2, 2, 5, 2, 7]],
    "K": [21, [4, 21, 4, 0, -1, -1, 18, 21, 4, 7, -1, -1, 9, 12, 18, 0]],
    "L": [17, [4, 21, 4, 0, -1, -1, 4, 0, 16, 0]],
    "M": [24, [4, 21, 4, 0, -1, -1, 4, 21, 12, 0, -1, -1, 20, 21, 12, 0, -1, -1, 20, 21, 20, 0]],
    "N": [22, [4, 21, 4, 0, -1, -1, 4, 21, 18, 0, -1, -1, 18, 21, 18, 0]],
    "O": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21]],
    "P": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 14, 17, 12, 16, 11, 13, 10, 4, 10]],
    "Q": [22, [9, 21, 7, 20, 5, 18, 4, 16, 3, 13, 3, 8, 4, 5, 5, 3, 7, 1, 9, 0, 13, 0, 15, 1, 17, 3, 18, 5, 19, 8, 19, 13, 18, 16, 17, 18, 15, 20, 13, 21, 9, 21, -1, -1, 12, 4, 18, -2]],
    "R": [21, [4, 21, 4, 0, -1, -1, 4, 21, 13, 21, 16, 20, 17, 19, 18, 17, 18, 15, 17, 13, 16, 12, 13, 11, 4, 11, -1, -1, 11, 11, 18, 0]],
    "S": [20, [17, 18, 15, 20, 12, 21, 8, 21, 5, 20, 3, 18, 3, 16, 4, 14, 5, 13, 7, 12, 13, 10, 15, 9, 16, 8, 17, 6, 17, 3, 15, 1, 12, 0, 8, 0, 5, 1, 3, 3]],
    "T": [16, [8, 21, 8, 0, -1, -1, 1, 21, 15, 21]],
    "U": [22, [4, 21, 4, 6, 5, 3, 7, 1, 10, 0, 12, 0, 15, 1, 17, 3, 18, 6, 18, 21]],
    "V": [18, [1, 21, 9, 0, -1, -1, 17, 21, 9, 0]],
    "W": [24, [2, 21, 7, 0, -1, -1, 12, 21, 7, 0, -1, -1, 12, 21, 17, 0, -1, -1, 22, 21, 17, 0]],
    "X": [20, [3, 21, 17, 0, -1, -1, 17, 21, 3, 0]],
    "Y": [18, [1, 21, 9, 11, 9, 0, -1, -1, 17, 21, 9, 11]],
    "Z": [20, [17, 21, 3, 0, -1, -1, 3, 21, 17, 21, -1, -1, 3, 0, 17, 0]],
    "[": [14, [4, 25, 4, -7, -1, -1, 5, 25, 5, -7, -1, -1, 4, 25, 11, 25, -1, -1, 4, -7, 11, -7]],
    "\\": [14, [0, 21, 14, -3]],
    "]": [14, [9, 25, 9, -7, -1, -1, 10, 25, 10, -7, -1, -1, 3, 25, 10, 25, -1, -1, 3, -7, 10, -7]],
    "^": [16, [6, 15, 8, 18, 10, 15, -1, -1, 3, 12, 8, 17, 13, 12, -1, -1, 8, 17, 8, 0]],
    "_": [16, [0, -2, 16, -2]],
    "`": [10, [6, 21, 5, 20, 4, 18, 4, 16, 5, 15, 6, 16, 5, 17]],
    "a": [19, [15, 14, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
    "b": [19, [4, 21, 4, 0, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
    "c": [18, [15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
    "d": [19, [15, 21, 15, 0, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
    "e": [18, [3, 8, 15, 8, 15, 10, 14, 12, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
    "f": [12, [10, 21, 8, 21, 6, 20, 5, 17, 5, 0, -1, -1, 2, 14, 9, 14]],
    "g": [19, [15, 14, 15, -2, 14, -5, 13, -6, 11, -7, 8, -7, 6, -6, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
    "h": [19, [4, 21, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
    "i": [8, [3, 21, 4, 20, 5, 21, 4, 22, 3, 21, -1, -1, 4, 14, 4, 0]],
    "j": [10, [5, 21, 6, 20, 7, 21, 6, 22, 5, 21, -1, -1, 6, 14, 6, -3, 5, -6, 3, -7, 1, -7]],
    "k": [17, [4, 21, 4, 0, -1, -1, 14, 14, 4, 4, -1, -1, 8, 8, 15, 0]],
    "l": [8, [4, 21, 4, 0]],
    "m": [30, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0, -1, -1, 15, 10, 18, 13, 20, 14, 23, 14, 25, 13, 26, 10, 26, 0]],
    "n": [19, [4, 14, 4, 0, -1, -1, 4, 10, 7, 13, 9, 14, 12, 14, 14, 13, 15, 10, 15, 0]],
    "o": [19, [8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3, 16, 6, 16, 8, 15, 11, 13, 13, 11, 14, 8, 14]],
    "p": [19, [4, 14, 4, -7, -1, -1, 4, 11, 6, 13, 8, 14, 11, 14, 13, 13, 15, 11, 16, 8, 16, 6, 15, 3, 13, 1, 11, 0, 8, 0, 6, 1, 4, 3]],
    "q": [19, [15, 14, 15, -7, -1, -1, 15, 11, 13, 13, 11, 14, 8, 14, 6, 13, 4, 11, 3, 8, 3, 6, 4, 3, 6, 1, 8, 0, 11, 0, 13, 1, 15, 3]],
    "r": [13, [4, 14, 4, 0, -1, -1, 4, 8, 5, 11, 7, 13, 9, 14, 12, 14]],
    "s": [17, [14, 11, 13, 13, 10, 14, 7, 14, 4, 13, 3, 11, 4, 9, 6, 8, 11, 7, 13, 6, 14, 4, 14, 3, 13, 1, 10, 0, 7, 0, 4, 1, 3, 3]],
    "t": [12, [5, 21, 5, 4, 6, 1, 8, 0, 10, 0, -1, -1, 2, 14, 9, 14]],
    "u": [19, [4, 14, 4, 4, 5, 1, 7, 0, 10, 0, 12, 1, 15, 4, -1, -1, 15, 14, 15, 0]],
    "v": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0]],
    "w": [22, [3, 14, 7, 0, -1, -1, 11, 14, 7, 0, -1, -1, 11, 14, 15, 0, -1, -1, 19, 14, 15, 0]],
    "x": [17, [3, 14, 14, 0, -1, -1, 14, 14, 3, 0]],
    "y": [16, [2, 14, 8, 0, -1, -1, 14, 14, 8, 0, 6, -4, 4, -6, 2, -7, 1, -7]],
    "z": [17, [14, 14, 3, 0, -1, -1, 3, 14, 14, 14, -1, -1, 3, 0, 14, 0]],
    "{": [14, [9, 25, 7, 24, 6, 23, 5, 21, 5, 19, 6, 17, 7, 16, 8, 14, 8, 12, 6, 10, -1, -1, 7, 24, 6, 22, 6, 20, 7, 18, 8, 17, 9, 15, 9, 13, 8, 11, 4, 9, 8, 7, 9, 5, 9, 3, 8, 1, 7, 0, 6, -2, 6, -4, 7, -6, -1, -1, 6, 8, 8, 6, 8, 4, 7, 2, 6, 1, 5, -1, 5, -3, 6, -5, 7, -6, 9, -7]],
    "|": [8, [4, 25, 4, -7]],
    "}": [14, [5, 25, 7, 24, 8, 23, 9, 21, 9, 19, 8, 17, 7, 16, 6, 14, 6, 12, 8, 10, -1, -1, 7, 24, 8, 22, 8, 20, 7, 18, 6, 17, 5, 15, 5, 13, 6, 11, 10, 9, 6, 7, 5, 5, 5, 3, 6, 1, 7, 0, 8, -2, 8, -4, 7, -6, -1, -1, 8, 8, 6, 6, 6, 4, 7, 2, 8, 1, 9, -1, 9, -3, 8, -5, 7, -6, 5, -7]],
    "~": [24, [3, 6, 3, 8, 4, 11, 6, 12, 8, 12, 10, 11, 14, 8, 16, 7, 18, 7, 20, 8, 21, 10, -1, -1, 3, 8, 4, 10, 6, 11, 8, 11, 10, 10, 14, 7, 16, 6, 18, 6, 20, 7, 21, 10, 21, 12]]
};

module.exports = function textVertices(text, left, baseline, scale) {
    scale = scale || 1;

    var strokes = [],
        i, len, j, len2, glyph, x, y, prev;

    for (i = 0, len = text.length; i < len; i++) {
        glyph = simplexFont[text[i]];
        if (!glyph) continue;
        prev = null;

        for (j = 0, len2 = glyph[1].length; j < len2; j += 2) {
            if (glyph[1][j] === -1 && glyph[1][j + 1] === -1) {
                prev = null;

            } else {
                x = left + glyph[1][j] * scale;
                y = baseline - glyph[1][j + 1] * scale;
                if (prev) {
                    strokes.push(prev.x, prev.y, x, y);
                }
                prev = {x: x, y: y};
            }
        }
        left += glyph[0] * scale;
    }

    return strokes;
};

},{}],319:[function(require,module,exports){
'use strict';

// jshint -W079
var mapboxgl = module.exports = {};

mapboxgl.version = require('../package.json').version;

mapboxgl.Map = require('./ui/map');
mapboxgl.Control = require('./ui/control/control');
mapboxgl.Navigation = require('./ui/control/navigation');
mapboxgl.Geolocate = require('./ui/control/geolocate');
mapboxgl.Attribution = require('./ui/control/attribution');
mapboxgl.Popup = require('./ui/popup');
mapboxgl.Marker = require('./ui/marker');

mapboxgl.Style = require('./style/style');

mapboxgl.LngLat = require('./geo/lng_lat');
mapboxgl.LngLatBounds = require('./geo/lng_lat_bounds');
mapboxgl.Point = require('point-geometry');

mapboxgl.Evented = require('./util/evented');
mapboxgl.util = require('./util/util');

mapboxgl.supported = require('./util/browser').supported;

var ajax = require('./util/ajax');
mapboxgl.util.getJSON = ajax.getJSON;
mapboxgl.util.getArrayBuffer = ajax.getArrayBuffer;

var config = require('./util/config');
mapboxgl.config = config;

Object.defineProperty(mapboxgl, 'accessToken', {
    get: function() { return config.ACCESS_TOKEN; },
    set: function(token) { config.ACCESS_TOKEN = token; }
});

/**
 * Gets and sets the map's [access token](https://www.mapbox.com/help/define-access-token/).
 *
 * @var {string} accessToken
 * @example
 * mapboxgl.accessToken = myAccessToken;
 */

/**
 * The version of Mapbox GL JS in use as specified in `package.json`,
 * `CHANGELOG.md`, and the GitHub release.
 *
 * @var {string} version
 */

/**
 * Returns a Boolean indicating whether the browser [supports Mapbox GL JS](https://www.mapbox.com/help/mapbox-browser-support/#mapbox-gl-js).
 *
 * @function supported
 * @param {Object} options
 * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`,
 *   the function will return `false` if the performance of Mapbox GL JS would
 *   be dramatically worse than expected (i.e. a software renderer would be used).
 * @return {boolean}
 * @example
 * mapboxgl.supported() // = true
 */

},{"../package.json":420,"./geo/lng_lat":315,"./geo/lng_lat_bounds":316,"./style/style":354,"./ui/control/attribution":385,"./ui/control/control":386,"./ui/control/geolocate":387,"./ui/control/navigation":388,"./ui/map":397,"./ui/marker":398,"./ui/popup":399,"./util/ajax":401,"./util/browser":402,"./util/config":407,"./util/evented":410,"./util/util":418,"point-geometry":919}],320:[function(require,module,exports){
'use strict';

var assert = require('assert');

module.exports = function(uniforms) {
    var pragmas = { define: {}, initialize: {} };

    for (var i = 0; i < uniforms.length; i++) {
        var uniform = uniforms[i];
        assert(uniform.name.slice(0, 2) === 'u_');

        var type = '{precision} ' + (uniform.components === 1 ? 'float' : 'vec' + uniform.components);
        pragmas.define[uniform.name.slice(2)] = 'uniform ' + type + ' ' + uniform.name + ';\n';
        pragmas.initialize[uniform.name.slice(2)] = type + ' ' + uniform.name.slice(2) + ' = ' + uniform.name + ';\n';
    }

    return pragmas;
};

},{"assert":9}],321:[function(require,module,exports){
'use strict';

var pixelsToTileUnits = require('../source/pixels_to_tile_units');
var createUniformPragmas = require('./create_uniform_pragmas');

var tileSize = 512;

module.exports = drawBackground;

function drawBackground(painter, source, layer) {
    var gl = painter.gl;
    var transform = painter.transform;
    var color = layer.paint['background-color'];
    var image = layer.paint['background-pattern'];
    var opacity = layer.paint['background-opacity'];
    var program;

    var imagePosA = image ? painter.spriteAtlas.getPosition(image.from, true) : null;
    var imagePosB = image ? painter.spriteAtlas.getPosition(image.to, true) : null;

    painter.setDepthSublayer(0);
    if (imagePosA && imagePosB) {

        if (painter.isOpaquePass) return;

        // Draw texture fill
        program = painter.useProgram('pattern');
        gl.uniform1i(program.u_image, 0);
        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
        gl.uniform1f(program.u_opacity, opacity);

        gl.uniform1f(program.u_mix, image.t);

        gl.uniform2fv(program.u_pattern_size_a, imagePosA.size);
        gl.uniform2fv(program.u_pattern_size_b, imagePosB.size);
        gl.uniform1f(program.u_scale_a, image.fromScale);
        gl.uniform1f(program.u_scale_b, image.toScale);

        gl.activeTexture(gl.TEXTURE0);
        painter.spriteAtlas.bind(gl, true);

        painter.tileExtentPatternVAO.bind(gl, program, painter.tileExtentBuffer);
    } else {
        // Draw filling rectangle.
        if (painter.isOpaquePass !== (color[3] === 1)) return;

        var pragmas = createUniformPragmas([
            {name: 'u_color', components: 4},
            {name: 'u_opacity', components: 1}
        ]);
        program = painter.useProgram('fill', [], pragmas, pragmas);
        gl.uniform4fv(program.u_color, color);
        gl.uniform1f(program.u_opacity, opacity);
        painter.tileExtentVAO.bind(gl, program, painter.tileExtentBuffer);
    }

    gl.disable(gl.STENCIL_TEST);

    // We need to draw the background in tiles in order to use calculatePosMatrix
    // which applies the projection matrix (transform.projMatrix). Otherwise
    // the depth and stencil buffers get into a bad state.
    // This can be refactored into a single draw call once earcut lands and
    // we don't have so much going on in the stencil buffer.
    var coords = transform.coveringTiles({ tileSize: tileSize });
    for (var c = 0; c < coords.length; c++) {
        var coord = coords[c];
        // var pixelsToTileUnitsBound = pixelsToTileUnits.bind({coord:coord, tileSize: tileSize});
        if (imagePosA && imagePosB) {
            var tile = {coord:coord, tileSize: tileSize};

            gl.uniform1f(program.u_tile_units_to_pixels, 1 / pixelsToTileUnits(tile, 1, painter.transform.tileZoom));

            var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);

            var pixelX = tileSizeAtNearestZoom * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
            var pixelY = tileSizeAtNearestZoom * tile.coord.y;
            // split the pixel coord into two pairs of 16 bit numbers. The glsl spec only guarantees 16 bits of precision.
            gl.uniform2f(program.u_pixel_coord_upper, pixelX >> 16, pixelY >> 16);
            gl.uniform2f(program.u_pixel_coord_lower, pixelX & 0xFFFF, pixelY & 0xFFFF);
        }

        gl.uniformMatrix4fv(program.u_matrix, false, painter.transform.calculatePosMatrix(coord));
        gl.drawArrays(gl.TRIANGLE_STRIP, 0, painter.tileExtentBuffer.length);
    }

    gl.stencilMask(0x00);
    gl.stencilFunc(gl.EQUAL, 0x80, 0x80);
}

},{"../source/pixels_to_tile_units":339,"./create_uniform_pragmas":320}],322:[function(require,module,exports){
'use strict';

var browser = require('../util/browser');

module.exports = drawCircles;

function drawCircles(painter, source, layer, coords) {
    if (painter.isOpaquePass) return;

    var gl = painter.gl;

    painter.setDepthSublayer(0);
    painter.depthMask(false);

    // Allow circles to be drawn across boundaries, so that
    // large circles are not clipped to tiles
    gl.disable(gl.STENCIL_TEST);

    for (var i = 0; i < coords.length; i++) {
        var coord = coords[i];

        var tile = source.getTile(coord);
        var bucket = tile.getBucket(layer);
        if (!bucket) continue;
        var bufferGroups = bucket.bufferGroups.circle;
        if (!bufferGroups) continue;

        var programOptions = bucket.paintAttributes.circle[layer.id];
        var program = painter.useProgram(
            'circle',
            programOptions.defines,
            programOptions.vertexPragmas,
            programOptions.fragmentPragmas
        );

        if (layer.paint['circle-pitch-scale'] === 'map') {
            gl.uniform1i(program.u_scale_with_map, true);
            gl.uniform2f(program.u_extrude_scale,
                painter.transform.pixelsToGLUnits[0] * painter.transform.altitude,
                painter.transform.pixelsToGLUnits[1] * painter.transform.altitude);
        } else {
            gl.uniform1i(program.u_scale_with_map, false);
            gl.uniform2fv(program.u_extrude_scale, painter.transform.pixelsToGLUnits);
        }

        gl.uniform1f(program.u_devicepixelratio, browser.devicePixelRatio);

        gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
            coord.posMatrix,
            tile,
            layer.paint['circle-translate'],
            layer.paint['circle-translate-anchor']
        ));

        bucket.setUniforms(gl, 'circle', program, layer, {zoom: painter.transform.zoom});

        for (var k = 0; k < bufferGroups.length; k++) {
            var group = bufferGroups[k];
            group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer, group.paintVertexBuffers[layer.id]);
            gl.drawElements(gl.TRIANGLES, group.elementBuffer.length * 3, gl.UNSIGNED_SHORT, 0);
        }
    }
}

},{"../util/browser":402}],323:[function(require,module,exports){
'use strict';

module.exports = drawCollisionDebug;

function drawCollisionDebug(painter, source, layer, coords) {
    var gl = painter.gl;
    gl.enable(gl.STENCIL_TEST);
    var program = painter.useProgram('collisionbox');

    for (var i = 0; i < coords.length; i++) {
        var coord = coords[i];
        var tile = source.getTile(coord);
        var bucket = tile.getBucket(layer);
        if (!bucket) continue;
        var bufferGroups = bucket.bufferGroups.collisionBox;

        if (!bufferGroups || !bufferGroups.length) continue;
        var group = bufferGroups[0];
        if (group.layoutVertexBuffer.length === 0) continue;

        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);

        painter.enableTileClippingMask(coord);

        painter.lineWidth(1);
        gl.uniform1f(program.u_scale, Math.pow(2, painter.transform.zoom - tile.coord.z));
        gl.uniform1f(program.u_zoom, painter.transform.zoom * 10);
        gl.uniform1f(program.u_maxzoom, (tile.coord.z + 1) * 10);

        group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer);
        gl.drawArrays(gl.LINES, 0, group.layoutVertexBuffer.length);
    }
}

},{}],324:[function(require,module,exports){
'use strict';

var textVertices = require('../lib/debugtext');
var browser = require('../util/browser');
var mat4 = require('gl-matrix').mat4;
var EXTENT = require('../data/bucket').EXTENT;
var Buffer = require('../data/buffer');
var VertexArrayObject = require('./vertex_array_object');

module.exports = drawDebug;

function drawDebug(painter, source, coords) {
    if (painter.isOpaquePass) return;
    if (!painter.options.debug) return;

    for (var i = 0; i < coords.length; i++) {
        drawDebugTile(painter, source, coords[i]);
    }
}

function drawDebugTile(painter, source, coord) {
    var gl = painter.gl;

    gl.disable(gl.STENCIL_TEST);
    painter.lineWidth(1 * browser.devicePixelRatio);

    var posMatrix = coord.posMatrix;
    var program = painter.useProgram('debug');

    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
    gl.uniform4f(program.u_color, 1, 0, 0, 1);
    painter.debugVAO.bind(gl, program, painter.debugBuffer);
    gl.drawArrays(gl.LINE_STRIP, 0, painter.debugBuffer.length);

    var vertices = textVertices(coord.toString(), 50, 200, 5);
    var debugTextArray = new painter.PosArray();
    for (var v = 0; v < vertices.length; v += 2) {
        debugTextArray.emplaceBack(vertices[v], vertices[v + 1]);
    }
    var debugTextBuffer = new Buffer(debugTextArray.serialize(), painter.PosArray.serialize(), Buffer.BufferType.VERTEX);
    var debugTextVAO = new VertexArrayObject();
    debugTextVAO.bind(gl, program, debugTextBuffer);
    gl.uniform4f(program.u_color, 1, 1, 1, 1);

    // Draw the halo with multiple 1px lines instead of one wider line because
    // the gl spec doesn't guarantee support for lines with width > 1.
    var tileSize = source.getTile(coord).tileSize;
    var onePixel = EXTENT / (Math.pow(2, painter.transform.zoom - coord.z) * tileSize);
    var translations = [[-1, -1], [-1, 1], [1, -1], [1, 1]];
    for (var i = 0; i < translations.length; i++) {
        var translation = translations[i];
        gl.uniformMatrix4fv(program.u_matrix, false, mat4.translate([], posMatrix, [onePixel * translation[0], onePixel * translation[1], 0]));
        gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
    }

    gl.uniform4f(program.u_color, 0, 0, 0, 1);
    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);
    gl.drawArrays(gl.LINES, 0, debugTextBuffer.length);
}

},{"../data/bucket":305,"../data/buffer":310,"../lib/debugtext":318,"../util/browser":402,"./vertex_array_object":333,"gl-matrix":168}],325:[function(require,module,exports){
'use strict';

var pixelsToTileUnits = require('../source/pixels_to_tile_units');

module.exports = draw;

function draw(painter, source, layer, coords) {
    var gl = painter.gl;
    gl.enable(gl.STENCIL_TEST);

    var isOpaque;
    if (layer.paint['fill-pattern']) {
        isOpaque = false;
    } else {
        isOpaque = (
            layer.isPaintValueFeatureConstant('fill-color') &&
            layer.isPaintValueFeatureConstant('fill-opacity') &&
            layer.paint['fill-color'][3] === 1 &&
            layer.paint['fill-opacity'] === 1
        );
    }

    // Draw fill
    if (painter.isOpaquePass === isOpaque) {
        // Once we switch to earcut drawing we can pull most of the WebGL setup
        // outside of this coords loop.
        painter.setDepthSublayer(1);
        for (var i = 0; i < coords.length; i++) {
            drawFill(painter, source, layer, coords[i]);
        }
    }

    if (!painter.isOpaquePass && layer.paint['fill-antialias']) {
        painter.lineWidth(2);
        painter.depthMask(false);

        var isOutlineColorDefined = layer.getPaintProperty('fill-outline-color');
        if (isOutlineColorDefined || !layer.paint['fill-pattern']) {
            if (isOutlineColorDefined) {
                // If we defined a different color for the fill outline, we are
                // going to ignore the bits in 0x07 and just care about the global
                // clipping mask.
                painter.setDepthSublayer(2);
            } else {
                // Otherwise, we only want to drawFill the antialiased parts that are
                // *outside* the current shape. This is important in case the fill
                // or stroke color is translucent. If we wouldn't clip to outside
                // the current shape, some pixels from the outline stroke overlapped
                // the (non-antialiased) fill.
                painter.setDepthSublayer(0);
            }
        } else {
            // Otherwise, we only want to drawFill the antialiased parts that are
            // *outside* the current shape. This is important in case the fill
            // or stroke color is translucent. If we wouldn't clip to outside
            // the current shape, some pixels from the outline stroke overlapped
            // the (non-antialiased) fill.
            painter.setDepthSublayer(0);
        }

        for (var j = 0; j < coords.length; j++) {
            drawStroke(painter, source, layer, coords[j]);
        }
    }
}

function drawFill(painter, source, layer, coord) {
    var tile = source.getTile(coord);
    var bucket = tile.getBucket(layer);
    if (!bucket) return;
    var bufferGroups = bucket.bufferGroups.fill;
    if (!bufferGroups) return;

    var gl = painter.gl;

    var image = layer.paint['fill-pattern'];
    var program;

    if (!image) {

        var programOptions = bucket.paintAttributes.fill[layer.id];
        program = painter.useProgram(
            'fill',
            programOptions.defines,
            programOptions.vertexPragmas,
            programOptions.fragmentPragmas
        );
        bucket.setUniforms(gl, 'fill', program, layer, {zoom: painter.transform.zoom});

    } else {
        // Draw texture fill
        program = painter.useProgram('pattern');
        setPattern(image, layer.paint['fill-opacity'], tile, coord, painter, program);

        gl.activeTexture(gl.TEXTURE0);
        painter.spriteAtlas.bind(gl, true);
    }

    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
        coord.posMatrix,
        tile,
        layer.paint['fill-translate'],
        layer.paint['fill-translate-anchor']
    ));

    painter.enableTileClippingMask(coord);

    for (var i = 0; i < bufferGroups.length; i++) {
        var group = bufferGroups[i];
        group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer, group.paintVertexBuffers[layer.id]);
        gl.drawElements(gl.TRIANGLES, group.elementBuffer.length, gl.UNSIGNED_SHORT, 0);
    }
}

function drawStroke(painter, source, layer, coord) {
    var tile = source.getTile(coord);
    var bucket = tile.getBucket(layer);
    if (!bucket) return;

    var gl = painter.gl;
    var bufferGroups = bucket.bufferGroups.fill;

    var image = layer.paint['fill-pattern'];
    var opacity = layer.paint['fill-opacity'];
    var isOutlineColorDefined = layer.getPaintProperty('fill-outline-color');

    var program;
    if (image && !isOutlineColorDefined) {
        program = painter.useProgram('outlinepattern');
        gl.uniform2f(program.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);

    } else {
        var programOptions = bucket.paintAttributes.fill[layer.id];
        program = painter.useProgram(
            'outline',
            programOptions.defines,
            programOptions.vertexPragmas,
            programOptions.fragmentPragmas
        );
        gl.uniform2f(program.u_world, gl.drawingBufferWidth, gl.drawingBufferHeight);
        gl.uniform1f(program.u_opacity, opacity);
        bucket.setUniforms(gl, 'fill', program, layer, {zoom: painter.transform.zoom});
    }

    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(
        coord.posMatrix,
        tile,
        layer.paint['fill-translate'],
        layer.paint['fill-translate-anchor']
    ));

    if (image) { setPattern(image, opacity, tile, coord, painter, program); }

    painter.enableTileClippingMask(coord);

    for (var k = 0; k < bufferGroups.length; k++) {
        var group = bufferGroups[k];
        group.secondVaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer2, group.paintVertexBuffers[layer.id]);
        gl.drawElements(gl.LINES, group.elementBuffer2.length * 2, gl.UNSIGNED_SHORT, 0);
    }
}


function setPattern(image, opacity, tile, coord, painter, program) {
    var gl = painter.gl;

    var imagePosA = painter.spriteAtlas.getPosition(image.from, true);
    var imagePosB = painter.spriteAtlas.getPosition(image.to, true);
    if (!imagePosA || !imagePosB) return;

    gl.uniform1i(program.u_image, 0);
    gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
    gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
    gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
    gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
    gl.uniform1f(program.u_opacity, opacity);
    gl.uniform1f(program.u_mix, image.t);

    gl.uniform1f(program.u_tile_units_to_pixels, 1 / pixelsToTileUnits(tile, 1, painter.transform.tileZoom));
    gl.uniform2fv(program.u_pattern_size_a, imagePosA.size);
    gl.uniform2fv(program.u_pattern_size_b, imagePosB.size);
    gl.uniform1f(program.u_scale_a, image.fromScale);
    gl.uniform1f(program.u_scale_b, image.toScale);

    var tileSizeAtNearestZoom = tile.tileSize * Math.pow(2, painter.transform.tileZoom - tile.coord.z);

    var pixelX = tileSizeAtNearestZoom * (tile.coord.x + coord.w * Math.pow(2, tile.coord.z));
    var pixelY = tileSizeAtNearestZoom * tile.coord.y;
    // split the pixel coord into two pairs of 16 bit numbers. The glsl spec only guarantees 16 bits of precision.
    gl.uniform2f(program.u_pixel_coord_upper, pixelX >> 16, pixelY >> 16);
    gl.uniform2f(program.u_pixel_coord_lower, pixelX & 0xFFFF, pixelY & 0xFFFF);

    gl.activeTexture(gl.TEXTURE0);
    painter.spriteAtlas.bind(gl, true);
}

},{"../source/pixels_to_tile_units":339}],326:[function(require,module,exports){
'use strict';

var browser = require('../util/browser');
var mat2 = require('gl-matrix').mat2;
var pixelsToTileUnits = require('../source/pixels_to_tile_units');

/**
 * Draw a line. Under the hood this will read elements from
 * a tile, dash textures from a lineAtlas, and style properties from a layer.
 * @param {Object} painter
 * @param {Object} layer
 * @param {Object} posMatrix
 * @param {Tile} tile
 * @returns {undefined} draws with the painter
 * @private
 */
module.exports = function drawLine(painter, source, layer, coords) {
    if (painter.isOpaquePass) return;
    painter.setDepthSublayer(0);
    painter.depthMask(false);

    var gl = painter.gl;
    gl.enable(gl.STENCIL_TEST);

    // don't draw zero-width lines
    if (layer.paint['line-width'] <= 0) return;

    // the distance over which the line edge fades out.
    // Retina devices need a smaller distance to avoid aliasing.
    var antialiasing = 1 / browser.devicePixelRatio;

    var blur = layer.paint['line-blur'] + antialiasing;
    var color = layer.paint['line-color'];

    var tr = painter.transform;

    var antialiasingMatrix = mat2.create();
    mat2.scale(antialiasingMatrix, antialiasingMatrix, [1, Math.cos(tr._pitch)]);
    mat2.rotate(antialiasingMatrix, antialiasingMatrix, painter.transform.angle);

    // calculate how much longer the real world distance is at the top of the screen
    // than at the middle of the screen.
    var topedgelength = Math.sqrt(tr.height * tr.height / 4  * (1 + tr.altitude * tr.altitude));
    var x = tr.height / 2 * Math.tan(tr._pitch);
    var extra = (topedgelength + x) / topedgelength - 1;

    var dasharray = layer.paint['line-dasharray'];
    var image = layer.paint['line-pattern'];
    var program, posA, posB, imagePosA, imagePosB;

    if (dasharray) {
        program = painter.useProgram('linesdfpattern');

        gl.uniform1f(program.u_linewidth, layer.paint['line-width'] / 2);
        gl.uniform1f(program.u_gapwidth, layer.paint['line-gap-width'] / 2);
        gl.uniform1f(program.u_antialiasing, antialiasing / 2);
        gl.uniform1f(program.u_blur, blur);
        gl.uniform4fv(program.u_color, color);
        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);

        posA = painter.lineAtlas.getDash(dasharray.from, layer.layout['line-cap'] === 'round');
        posB = painter.lineAtlas.getDash(dasharray.to, layer.layout['line-cap'] === 'round');

        gl.uniform1i(program.u_image, 0);
        gl.activeTexture(gl.TEXTURE0);
        painter.lineAtlas.bind(gl);

        gl.uniform1f(program.u_tex_y_a, posA.y);
        gl.uniform1f(program.u_tex_y_b, posB.y);
        gl.uniform1f(program.u_mix, dasharray.t);
        gl.uniform1f(program.u_extra, extra);
        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);

    } else if (image) {
        imagePosA = painter.spriteAtlas.getPosition(image.from, true);
        imagePosB = painter.spriteAtlas.getPosition(image.to, true);
        if (!imagePosA || !imagePosB) return;

        program = painter.useProgram('linepattern');

        gl.uniform1i(program.u_image, 0);
        gl.activeTexture(gl.TEXTURE0);
        painter.spriteAtlas.bind(gl, true);

        gl.uniform1f(program.u_linewidth, layer.paint['line-width'] / 2);
        gl.uniform1f(program.u_gapwidth, layer.paint['line-gap-width'] / 2);
        gl.uniform1f(program.u_antialiasing, antialiasing / 2);
        gl.uniform1f(program.u_blur, blur);
        gl.uniform2fv(program.u_pattern_tl_a, imagePosA.tl);
        gl.uniform2fv(program.u_pattern_br_a, imagePosA.br);
        gl.uniform2fv(program.u_pattern_tl_b, imagePosB.tl);
        gl.uniform2fv(program.u_pattern_br_b, imagePosB.br);
        gl.uniform1f(program.u_fade, image.t);
        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
        gl.uniform1f(program.u_extra, extra);
        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);

    } else {
        program = painter.useProgram('line');

        gl.uniform1f(program.u_linewidth, layer.paint['line-width'] / 2);
        gl.uniform1f(program.u_gapwidth, layer.paint['line-gap-width'] / 2);
        gl.uniform1f(program.u_antialiasing, antialiasing / 2);
        gl.uniform1f(program.u_blur, blur);
        gl.uniform1f(program.u_extra, extra);
        gl.uniform1f(program.u_offset, -layer.paint['line-offset']);
        gl.uniformMatrix2fv(program.u_antialiasingmatrix, false, antialiasingMatrix);
        gl.uniform4fv(program.u_color, color);
        gl.uniform1f(program.u_opacity, layer.paint['line-opacity']);
    }

    for (var k = 0; k < coords.length; k++) {
        var coord = coords[k];
        var tile = source.getTile(coord);
        var bucket = tile.getBucket(layer);
        if (!bucket) continue;
        var bufferGroups = bucket.bufferGroups.line;
        if (!bufferGroups) continue;

        painter.enableTileClippingMask(coord);

        // set uniforms that are different for each tile
        var posMatrix = painter.translatePosMatrix(coord.posMatrix, tile, layer.paint['line-translate'], layer.paint['line-translate-anchor']);
        gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);

        var ratio = 1 / pixelsToTileUnits(tile, 1, painter.transform.zoom);

        if (dasharray) {
            var widthA = posA.width * dasharray.fromScale;
            var widthB = posB.width * dasharray.toScale;
            var scaleA = [1 / pixelsToTileUnits(tile, widthA, painter.transform.tileZoom), -posA.height / 2];
            var scaleB = [1 / pixelsToTileUnits(tile, widthB, painter.transform.tileZoom), -posB.height / 2];
            var gamma = painter.lineAtlas.width / (Math.min(widthA, widthB) * 256 * browser.devicePixelRatio) / 2;
            gl.uniform1f(program.u_ratio, ratio);
            gl.uniform2fv(program.u_patternscale_a, scaleA);
            gl.uniform2fv(program.u_patternscale_b, scaleB);
            gl.uniform1f(program.u_sdfgamma, gamma);

        } else if (image) {
            gl.uniform1f(program.u_ratio, ratio);
            gl.uniform2fv(program.u_pattern_size_a, [
                pixelsToTileUnits(tile, imagePosA.size[0] * image.fromScale, painter.transform.tileZoom),
                imagePosB.size[1]
            ]);
            gl.uniform2fv(program.u_pattern_size_b, [
                pixelsToTileUnits(tile, imagePosB.size[0] * image.toScale, painter.transform.tileZoom),
                imagePosB.size[1]
            ]);

        } else {
            gl.uniform1f(program.u_ratio, ratio);
        }

        for (var i = 0; i < bufferGroups.length; i++) {
            var group = bufferGroups[i];
            group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer);
            gl.drawElements(gl.TRIANGLES, group.elementBuffer.length * 3, gl.UNSIGNED_SHORT, 0);
        }
    }

};

},{"../source/pixels_to_tile_units":339,"../util/browser":402,"gl-matrix":168}],327:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var StructArrayType = require('../util/struct_array');

module.exports = drawRaster;

function drawRaster(painter, source, layer, coords) {
    if (painter.isOpaquePass) return;

    var gl = painter.gl;

    gl.enable(gl.DEPTH_TEST);
    painter.depthMask(true);

    // Change depth function to prevent double drawing in areas where tiles overlap.
    gl.depthFunc(gl.LESS);

    var minTileZ = coords.length && coords[0].z;

    for (var i = 0; i < coords.length; i++) {
        var coord = coords[i];
        // set the lower zoom level to sublayer 0, and higher zoom levels to higher sublayers
        painter.setDepthSublayer(coord.z - minTileZ);
        drawRasterTile(painter, source, layer, coord);
    }

    gl.depthFunc(gl.LEQUAL);
}

drawRaster.RasterBoundsArray = new StructArrayType({
    members: [
        { name: 'a_pos', type: 'Int16', components: 2 },
        { name: 'a_texture_pos', type: 'Int16', components: 2 }
    ]
});

function drawRasterTile(painter, source, layer, coord) {

    var gl = painter.gl;

    gl.disable(gl.STENCIL_TEST);

    var tile = source.getTile(coord);
    var posMatrix = painter.transform.calculatePosMatrix(coord, source.maxzoom);

    var program = painter.useProgram('raster');
    gl.uniformMatrix4fv(program.u_matrix, false, posMatrix);

    // color parameters
    gl.uniform1f(program.u_brightness_low, layer.paint['raster-brightness-min']);
    gl.uniform1f(program.u_brightness_high, layer.paint['raster-brightness-max']);
    gl.uniform1f(program.u_saturation_factor, saturationFactor(layer.paint['raster-saturation']));
    gl.uniform1f(program.u_contrast_factor, contrastFactor(layer.paint['raster-contrast']));
    gl.uniform3fv(program.u_spin_weights, spinWeights(layer.paint['raster-hue-rotate']));

    var parentTile = tile.source && tile.source.findLoadedParent(coord, 0, {}),
        opacities = getOpacities(tile, parentTile, layer, painter.transform);

    var parentScaleBy, parentTL;

    gl.activeTexture(gl.TEXTURE0);
    gl.bindTexture(gl.TEXTURE_2D, tile.texture);

    gl.activeTexture(gl.TEXTURE1);

    if (parentTile) {
        gl.bindTexture(gl.TEXTURE_2D, parentTile.texture);
        parentScaleBy = Math.pow(2, parentTile.coord.z - tile.coord.z);
        parentTL = [tile.coord.x * parentScaleBy % 1, tile.coord.y * parentScaleBy % 1];

    } else {
        gl.bindTexture(gl.TEXTURE_2D, tile.texture);
        opacities[1] = 0;
    }

    // cross-fade parameters
    gl.uniform2fv(program.u_tl_parent, parentTL || [0, 0]);
    gl.uniform1f(program.u_scale_parent, parentScaleBy || 1);
    gl.uniform1f(program.u_buffer_scale, 1);
    gl.uniform1f(program.u_opacity0, opacities[0]);
    gl.uniform1f(program.u_opacity1, opacities[1]);
    gl.uniform1i(program.u_image0, 0);
    gl.uniform1i(program.u_image1, 1);

    var buffer = tile.boundsBuffer || painter.rasterBoundsBuffer;
    var vao = tile.boundsVAO || painter.rasterBoundsVAO;
    vao.bind(gl, program, buffer);
    gl.drawArrays(gl.TRIANGLE_STRIP, 0, buffer.length);
}

function spinWeights(angle) {
    angle *= Math.PI / 180;
    var s = Math.sin(angle);
    var c = Math.cos(angle);
    return [
        (2 * c + 1) / 3,
        (-Math.sqrt(3) * s - c + 1) / 3,
        (Math.sqrt(3) * s - c + 1) / 3
    ];
}

function contrastFactor(contrast) {
    return contrast > 0 ?
        1 / (1 - contrast) :
        1 + contrast;
}

function saturationFactor(saturation) {
    return saturation > 0 ?
        1 - 1 / (1.001 - saturation) :
        -saturation;
}

function getOpacities(tile, parentTile, layer, transform) {
    var opacity = [1, 0];
    var fadeDuration = layer.paint['raster-fade-duration'];

    if (tile.source && fadeDuration > 0) {
        var now = new Date().getTime();

        var sinceTile = (now - tile.timeAdded) / fadeDuration;
        var sinceParent = parentTile ? (now - parentTile.timeAdded) / fadeDuration : -1;

        var idealZ = transform.coveringZoomLevel(tile.source);
        var parentFurther = parentTile ? Math.abs(parentTile.coord.z - idealZ) > Math.abs(tile.coord.z - idealZ) : false;

        if (!parentTile || parentFurther) {
            // if no parent or parent is older
            opacity[0] = util.clamp(sinceTile, 0, 1);
            opacity[1] = 1 - opacity[0];
        } else {
            // parent is younger, zooming out
            opacity[0] = util.clamp(1 - sinceParent, 0, 1);
            opacity[1] = 1 - opacity[0];
        }
    }

    var op = layer.paint['raster-opacity'];
    opacity[0] *= op;
    opacity[1] *= op;

    return opacity;
}

},{"../util/struct_array":416,"../util/util":418}],328:[function(require,module,exports){
'use strict';

var browser = require('../util/browser');
var drawCollisionDebug = require('./draw_collision_debug');
var pixelsToTileUnits = require('../source/pixels_to_tile_units');


module.exports = drawSymbols;

function drawSymbols(painter, source, layer, coords) {
    if (painter.isOpaquePass) return;

    var drawAcrossEdges = !(layer.layout['text-allow-overlap'] || layer.layout['icon-allow-overlap'] ||
        layer.layout['text-ignore-placement'] || layer.layout['icon-ignore-placement']);

    var gl = painter.gl;

    // Disable the stencil test so that labels aren't clipped to tile boundaries.
    //
    // Layers with features that may be drawn overlapping aren't clipped. These
    // layers are sorted in the y direction, and to draw the correct ordering near
    // tile edges the icons are included in both tiles and clipped when drawing.
    if (drawAcrossEdges) {
        gl.disable(gl.STENCIL_TEST);
    } else {
        gl.enable(gl.STENCIL_TEST);
    }

    painter.setDepthSublayer(0);
    painter.depthMask(false);
    gl.disable(gl.DEPTH_TEST);

    drawLayerSymbols(painter, source, layer, coords, false,
            layer.paint['icon-translate'],
            layer.paint['icon-translate-anchor'],
            layer.layout['icon-rotation-alignment'],
            // icon-pitch-alignment is not yet implemented
            // and we simply inherit the rotation alignment
            layer.layout['icon-rotation-alignment'],
            layer.layout['icon-size'],
            layer.paint['icon-halo-width'],
            layer.paint['icon-halo-color'],
            layer.paint['icon-halo-blur'],
            layer.paint['icon-opacity'],
            layer.paint['icon-color']);

    drawLayerSymbols(painter, source, layer, coords, true,
            layer.paint['text-translate'],
            layer.paint['text-translate-anchor'],
            layer.layout['text-rotation-alignment'],
            layer.layout['text-pitch-alignment'],
            layer.layout['text-size'],
            layer.paint['text-halo-width'],
            layer.paint['text-halo-color'],
            layer.paint['text-halo-blur'],
            layer.paint['text-opacity'],
            layer.paint['text-color']);

    gl.enable(gl.DEPTH_TEST);

    if (source.map.showCollisionBoxes) {
        drawCollisionDebug(painter, source, layer, coords);
    }
}

function drawLayerSymbols(painter, source, layer, coords, isText,
        translate,
        translateAnchor,
        rotationAlignment,
        pitchAlignment,
        size,
        haloWidth,
        haloColor,
        haloBlur,
        opacity,
        color) {

    for (var j = 0; j < coords.length; j++) {
        var tile = source.getTile(coords[j]);
        var bucket = tile.getBucket(layer);
        if (!bucket) continue;
        var bothBufferGroups = bucket.bufferGroups;
        var bufferGroups = isText ? bothBufferGroups.glyph : bothBufferGroups.icon;
        if (!bufferGroups.length) continue;

        painter.enableTileClippingMask(coords[j]);
        drawSymbol(painter, layer, coords[j].posMatrix, tile, bucket, bufferGroups, isText,
                isText || bucket.sdfIcons, !isText && bucket.iconsNeedLinear,
                isText ? bucket.adjustedTextSize : bucket.adjustedIconSize, bucket.fontstack,
                translate,
                translateAnchor,
                rotationAlignment,
                pitchAlignment,
                size,
                haloWidth,
                haloColor,
                haloBlur,
                opacity,
                color);
    }
}

function drawSymbol(painter, layer, posMatrix, tile, bucket, bufferGroups, isText, sdf, iconsNeedLinear, adjustedSize, fontstack,
        translate,
        translateAnchor,
        rotationAlignment,
        pitchAlignment,
        size,
        haloWidth,
        haloColor,
        haloBlur,
        opacity,
        color) {

    var gl = painter.gl;
    var tr = painter.transform;
    var rotateWithMap = rotationAlignment === 'map';
    var pitchWithMap = pitchAlignment === 'map';

    var defaultSize = isText ? 24 : 1;
    var fontScale = size / defaultSize;

    var extrudeScale, s, gammaScale;
    if (pitchWithMap) {
        s = pixelsToTileUnits(tile, 1, painter.transform.zoom) * fontScale;
        gammaScale = 1 / Math.cos(tr._pitch);
        extrudeScale = [s, s];
    } else {
        s = painter.transform.altitude * fontScale;
        gammaScale = 1;
        extrudeScale = [ tr.pixelsToGLUnits[0] * s, tr.pixelsToGLUnits[1] * s];
    }

    if (!isText && !painter.style.sprite.loaded())
        return;

    var program = painter.useProgram(sdf ? 'sdf' : 'icon');
    gl.uniformMatrix4fv(program.u_matrix, false, painter.translatePosMatrix(posMatrix, tile, translate, translateAnchor));
    gl.uniform1i(program.u_rotate_with_map, rotateWithMap);
    gl.uniform1i(program.u_pitch_with_map, pitchWithMap);
    gl.uniform2fv(program.u_extrude_scale, extrudeScale);

    gl.activeTexture(gl.TEXTURE0);
    gl.uniform1i(program.u_texture, 0);

    if (isText) {
        // use the fonstack used when parsing the tile, not the fontstack
        // at the current zoom level (layout['text-font']).
        var glyphAtlas = fontstack && painter.glyphSource.getGlyphAtlas(fontstack);
        if (!glyphAtlas) return;

        glyphAtlas.updateTexture(gl);
        gl.uniform2f(program.u_texsize, glyphAtlas.width / 4, glyphAtlas.height / 4);
    } else {
        var mapMoving = painter.options.rotating || painter.options.zooming;
        var iconScaled = fontScale !== 1 || browser.devicePixelRatio !== painter.spriteAtlas.pixelRatio || iconsNeedLinear;
        var iconTransformed = pitchWithMap || painter.transform.pitch;
        painter.spriteAtlas.bind(gl, sdf || mapMoving || iconScaled || iconTransformed);
        gl.uniform2f(program.u_texsize, painter.spriteAtlas.width / 4, painter.spriteAtlas.height / 4);
    }

    // adjust min/max zooms for variable font sizes
    var zoomAdjust = Math.log(size / adjustedSize) / Math.LN2 || 0;
    gl.uniform1f(program.u_zoom, (painter.transform.zoom - zoomAdjust) * 10); // current zoom level

    gl.activeTexture(gl.TEXTURE1);
    painter.frameHistory.bind(gl);
    gl.uniform1i(program.u_fadetexture, 1);

    var group;

    if (sdf) {
        var sdfPx = 8;
        var blurOffset = 1.19;
        var haloOffset = 6;
        var gamma = 0.105 * defaultSize / size / browser.devicePixelRatio;

        if (haloWidth) {
            // Draw halo underneath the text.
            gl.uniform1f(program.u_gamma, (haloBlur * blurOffset / fontScale / sdfPx + gamma) * gammaScale);
            gl.uniform4fv(program.u_color, haloColor);
            gl.uniform1f(program.u_opacity, opacity);
            gl.uniform1f(program.u_buffer, (haloOffset - haloWidth / fontScale) / sdfPx);

            for (var j = 0; j < bufferGroups.length; j++) {
                group = bufferGroups[j];
                group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer);
                gl.drawElements(gl.TRIANGLES, group.elementBuffer.length * 3, gl.UNSIGNED_SHORT, 0);
            }
        }

        gl.uniform1f(program.u_gamma, gamma * gammaScale);
        gl.uniform4fv(program.u_color, color);
        gl.uniform1f(program.u_opacity, opacity);
        gl.uniform1f(program.u_buffer, (256 - 64) / 256);
        gl.uniform1f(program.u_pitch, tr.pitch / 360 * 2 * Math.PI);
        gl.uniform1f(program.u_bearing, tr.bearing / 360 * 2 * Math.PI);
        gl.uniform1f(program.u_aspect_ratio, tr.width / tr.height);

        for (var i = 0; i < bufferGroups.length; i++) {
            group = bufferGroups[i];
            group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer);
            gl.drawElements(gl.TRIANGLES, group.elementBuffer.length * 3, gl.UNSIGNED_SHORT, 0);
        }

    } else {
        gl.uniform1f(program.u_opacity, opacity);
        for (var k = 0; k < bufferGroups.length; k++) {
            group = bufferGroups[k];
            group.vaos[layer.id].bind(gl, program, group.layoutVertexBuffer, group.elementBuffer);
            gl.drawElements(gl.TRIANGLES, group.elementBuffer.length * 3, gl.UNSIGNED_SHORT, 0);
        }
    }
}

},{"../source/pixels_to_tile_units":339,"../util/browser":402,"./draw_collision_debug":323}],329:[function(require,module,exports){
'use strict';

module.exports = FrameHistory;

function FrameHistory() {
    this.changeTimes = new Float64Array(256);
    this.changeOpacities = new Uint8Array(256);
    this.opacities = new Uint8ClampedArray(256);
    this.array = new Uint8Array(this.opacities.buffer);

    this.fadeDuration = 300;
    this.previousZoom = 0;
    this.firstFrame = true;
}

FrameHistory.prototype.record = function(zoom) {
    var now = Date.now();

    if (this.firstFrame) {
        now = 0;
        this.firstFrame = false;
    }

    zoom = Math.floor(zoom * 10);

    var z;
    if (zoom < this.previousZoom) {
        for (z = zoom + 1; z <= this.previousZoom; z++) {
            this.changeTimes[z] = now;
            this.changeOpacities[z] = this.opacities[z];
        }
    } else {
        for (z = zoom; z > this.previousZoom; z--) {
            this.changeTimes[z] = now;
            this.changeOpacities[z] = this.opacities[z];
        }
    }

    for (z = 0; z < 256; z++) {
        var timeSince = now - this.changeTimes[z];
        var opacityChange = timeSince / this.fadeDuration * 255;
        if (z <= zoom) {
            this.opacities[z] = this.changeOpacities[z] + opacityChange;
        } else {
            this.opacities[z] = this.changeOpacities[z] - opacityChange;
        }
    }

    this.changed = true;
    this.previousZoom = zoom;
};

FrameHistory.prototype.bind = function(gl) {
    if (!this.texture) {
        this.texture = gl.createTexture();
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, 256, 1, 0, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);

    } else {
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
        if (this.changed) {
            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 256, 1, gl.ALPHA, gl.UNSIGNED_BYTE, this.array);
            this.changed = false;
        }
    }
};

},{}],330:[function(require,module,exports){
'use strict';

var util = require('../util/util');

module.exports = LineAtlas;

/**
 * A LineAtlas lets us reuse rendered dashed lines
 * by writing many of them to a texture and then fetching their positions
 * using .getDash.
 *
 * @param {number} width
 * @param {number} height
 * @private
 */
function LineAtlas(width, height) {
    this.width = width;
    this.height = height;
    this.nextRow = 0;

    this.bytes = 4;
    this.data = new Uint8Array(this.width * this.height * this.bytes);

    this.positions = {};
}

LineAtlas.prototype.setSprite = function(sprite) {
    this.sprite = sprite;
};

/**
 * Get or create a dash line pattern.
 *
 * @param {Array<number>} dasharray
 * @param {boolean} round whether to add circle caps in between dash segments
 * @returns {Object} position of dash texture in { y, height, width }
 * @private
 */
LineAtlas.prototype.getDash = function(dasharray, round) {
    var key = dasharray.join(",") + round;

    if (!this.positions[key]) {
        this.positions[key] = this.addDash(dasharray, round);
    }
    return this.positions[key];
};

LineAtlas.prototype.addDash = function(dasharray, round) {

    var n = round ? 7 : 0;
    var height = 2 * n + 1;
    var offset = 128;

    if (this.nextRow + height > this.height) {
        util.warnOnce('LineAtlas out of space');
        return null;
    }

    var length = 0;
    for (var i = 0; i < dasharray.length; i++) {
        length += dasharray[i];
    }

    var stretch = this.width / length;
    var halfWidth = stretch / 2;

    // If dasharray has an odd length, both the first and last parts
    // are dashes and should be joined seamlessly.
    var oddLength = dasharray.length % 2 === 1;

    for (var y = -n; y <= n; y++) {
        var row = this.nextRow + n + y;
        var index = this.width * row;

        var left = oddLength ? -dasharray[dasharray.length - 1] : 0;
        var right = dasharray[0];
        var partIndex = 1;

        for (var x = 0; x < this.width; x++) {

            while (right < x / stretch) {
                left = right;
                right = right + dasharray[partIndex];

                if (oddLength && partIndex === dasharray.length - 1) {
                    right += dasharray[0];
                }

                partIndex++;
            }

            var distLeft = Math.abs(x - left * stretch);
            var distRight = Math.abs(x - right * stretch);
            var dist = Math.min(distLeft, distRight);
            var inside = (partIndex % 2) === 1;
            var signedDistance;

            if (round) {
                // Add circle caps
                var distMiddle = n ? y / n * (halfWidth + 1) : 0;
                if (inside) {
                    var distEdge = halfWidth - Math.abs(distMiddle);
                    signedDistance = Math.sqrt(dist * dist + distEdge * distEdge);
                } else {
                    signedDistance = halfWidth - Math.sqrt(dist * dist + distMiddle * distMiddle);
                }
            } else {
                signedDistance = (inside ? 1 : -1) * dist;
            }

            this.data[3 + (index + x) * 4] = Math.max(0, Math.min(255, signedDistance + offset));
        }
    }

    var pos = {
        y: (this.nextRow + n + 0.5) / this.height,
        height: 2 * n / this.height,
        width: length
    };

    this.nextRow += height;
    this.dirty = true;

    return pos;
};

LineAtlas.prototype.bind = function(gl) {
    if (!this.texture) {
        this.texture = gl.createTexture();
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, this.width, this.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.data);

    } else {
        gl.bindTexture(gl.TEXTURE_2D, this.texture);

        if (this.dirty) {
            this.dirty = false;
            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.RGBA, gl.UNSIGNED_BYTE, this.data);
        }
    }
};

},{"../util/util":418}],331:[function(require,module,exports){
'use strict';

var browser = require('../util/browser');
var mat4 = require('gl-matrix').mat4;
var FrameHistory = require('./frame_history');
var SourceCache = require('../source/source_cache');
var EXTENT = require('../data/bucket').EXTENT;
var pixelsToTileUnits = require('../source/pixels_to_tile_units');
var util = require('../util/util');
var StructArrayType = require('../util/struct_array');
var Buffer = require('../data/buffer');
var VertexArrayObject = require('./vertex_array_object');
var RasterBoundsArray = require('./draw_raster').RasterBoundsArray;
var createUniformPragmas = require('./create_uniform_pragmas');

module.exports = Painter;

/**
 * Initialize a new painter object.
 *
 * @param {Canvas} gl an experimental-webgl drawing context
 * @private
 */
function Painter(gl, transform) {
    this.gl = gl;
    this.transform = transform;

    this.reusableTextures = {};
    this.preFbos = {};

    this.frameHistory = new FrameHistory();

    this.setup();

    // Within each layer there are multiple distinct z-planes that can be drawn to.
    // This is implemented using the WebGL depth buffer.
    this.numSublayers = SourceCache.maxUnderzooming + SourceCache.maxOverzooming + 1;
    this.depthEpsilon = 1 / Math.pow(2, 16);

    this.lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE);
}

util.extend(Painter.prototype, require('./painter/use_program'));

/*
 * Update the GL viewport, projection matrix, and transforms to compensate
 * for a new width and height value.
 */
Painter.prototype.resize = function(width, height) {
    var gl = this.gl;

    this.width = width * browser.devicePixelRatio;
    this.height = height * browser.devicePixelRatio;
    gl.viewport(0, 0, this.width, this.height);

};

Painter.prototype.setup = function() {
    var gl = this.gl;

    gl.verbose = true;

    // We are blending the new pixels *behind* the existing pixels. That way we can
    // draw front-to-back and use then stencil buffer to cull opaque pixels early.
    gl.enable(gl.BLEND);
    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);

    gl.enable(gl.STENCIL_TEST);

    gl.enable(gl.DEPTH_TEST);
    gl.depthFunc(gl.LEQUAL);

    this._depthMask = false;
    gl.depthMask(false);

    var PosArray = this.PosArray = new StructArrayType({
        members: [{ name: 'a_pos', type: 'Int16', components: 2 }]
    });

    var tileExtentArray = new PosArray();
    tileExtentArray.emplaceBack(0, 0);
    tileExtentArray.emplaceBack(EXTENT, 0);
    tileExtentArray.emplaceBack(0, EXTENT);
    tileExtentArray.emplaceBack(EXTENT, EXTENT);
    this.tileExtentBuffer = new Buffer(tileExtentArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
    this.tileExtentVAO = new VertexArrayObject();
    this.tileExtentPatternVAO = new VertexArrayObject();

    var debugArray = new PosArray();
    debugArray.emplaceBack(0, 0);
    debugArray.emplaceBack(EXTENT, 0);
    debugArray.emplaceBack(EXTENT, EXTENT);
    debugArray.emplaceBack(0, EXTENT);
    debugArray.emplaceBack(0, 0);
    this.debugBuffer = new Buffer(debugArray.serialize(), PosArray.serialize(), Buffer.BufferType.VERTEX);
    this.debugVAO = new VertexArrayObject();

    var rasterBoundsArray = new RasterBoundsArray();
    rasterBoundsArray.emplaceBack(0, 0, 0, 0);
    rasterBoundsArray.emplaceBack(EXTENT, 0, 32767, 0);
    rasterBoundsArray.emplaceBack(0, EXTENT, 0, 32767);
    rasterBoundsArray.emplaceBack(EXTENT, EXTENT, 32767, 32767);
    this.rasterBoundsBuffer = new Buffer(rasterBoundsArray.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
    this.rasterBoundsVAO = new VertexArrayObject();
};

/*
 * Reset the color buffers of the drawing canvas.
 */
Painter.prototype.clearColor = function() {
    var gl = this.gl;
    gl.clearColor(0, 0, 0, 0);
    gl.clear(gl.COLOR_BUFFER_BIT);
};

/*
 * Reset the drawing canvas by clearing the stencil buffer so that we can draw
 * new tiles at the same location, while retaining previously drawn pixels.
 */
Painter.prototype.clearStencil = function() {
    var gl = this.gl;
    gl.clearStencil(0x0);
    gl.stencilMask(0xFF);
    gl.clear(gl.STENCIL_BUFFER_BIT);
};

Painter.prototype.clearDepth = function() {
    var gl = this.gl;
    gl.clearDepth(1);
    this.depthMask(true);
    gl.clear(gl.DEPTH_BUFFER_BIT);
};

Painter.prototype._renderTileClippingMasks = function(coords) {
    var gl = this.gl;
    gl.colorMask(false, false, false, false);
    this.depthMask(false);
    gl.disable(gl.DEPTH_TEST);
    gl.enable(gl.STENCIL_TEST);

    // Only write clipping IDs to the last 5 bits. The first three are used for drawing fills.
    gl.stencilMask(0xF8);
    // Tests will always pass, and ref value will be written to stencil buffer.
    gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);

    var idNext = 1;
    this._tileClippingMaskIDs = {};
    for (var i = 0; i < coords.length; i++) {
        var coord = coords[i];
        var id = this._tileClippingMaskIDs[coord.id] = (idNext++) << 3;

        gl.stencilFunc(gl.ALWAYS, id, 0xF8);

        var pragmas = createUniformPragmas([
            {name: 'u_color', components: 4},
            {name: 'u_opacity', components: 1}
        ]);
        var program = this.useProgram('fill', [], pragmas, pragmas);
        gl.uniformMatrix4fv(program.u_matrix, false, coord.posMatrix);

        // Draw the clipping mask
        this.tileExtentVAO.bind(gl, program, this.tileExtentBuffer);
        gl.drawArrays(gl.TRIANGLE_STRIP, 0, this.tileExtentBuffer.length);
    }

    gl.stencilMask(0x00);
    gl.colorMask(true, true, true, true);
    this.depthMask(true);
    gl.enable(gl.DEPTH_TEST);
};

Painter.prototype.enableTileClippingMask = function(coord) {
    var gl = this.gl;
    gl.stencilFunc(gl.EQUAL, this._tileClippingMaskIDs[coord.id], 0xF8);
};

// Overridden by headless tests.
Painter.prototype.prepareBuffers = function() {};
Painter.prototype.bindDefaultFramebuffer = function() {
    var gl = this.gl;
    gl.bindFramebuffer(gl.FRAMEBUFFER, null);
};

var draw = {
    symbol: require('./draw_symbol'),
    circle: require('./draw_circle'),
    line: require('./draw_line'),
    fill: require('./draw_fill'),
    raster: require('./draw_raster'),
    background: require('./draw_background'),
    debug: require('./draw_debug')
};

Painter.prototype.render = function(style, options) {
    this.style = style;
    this.options = options;

    this.lineAtlas = style.lineAtlas;

    this.spriteAtlas = style.spriteAtlas;
    this.spriteAtlas.setSprite(style.sprite);

    this.glyphSource = style.glyphSource;

    this.frameHistory.record(this.transform.zoom);

    this.prepareBuffers();
    this.clearColor();
    this.clearDepth();

    this.showOverdrawInspector(options.showOverdrawInspector);

    this.depthRange = (style._order.length + 2) * this.numSublayers * this.depthEpsilon;

    this.renderPass({isOpaquePass: true});
    this.renderPass({isOpaquePass: false});
};

Painter.prototype.renderPass = function(options) {
    var groups = this.style._groups;
    var isOpaquePass = options.isOpaquePass;
    this.currentLayer = isOpaquePass ? this.style._order.length : -1;

    for (var i = 0; i < groups.length; i++) {
        var group = groups[isOpaquePass ? groups.length - 1 - i : i];
        var source = this.style.sources[group.source];

        var j;
        var coords = [];
        if (source) {
            coords = source.getVisibleCoordinates();
            for (j = 0; j < coords.length; j++) {
                coords[j].posMatrix = this.transform.calculatePosMatrix(coords[j], source.maxzoom);
            }
            this.clearStencil();
            if (source.prepare) source.prepare();
            if (source.isTileClipped) {
                this._renderTileClippingMasks(coords);
            }
        }

        if (isOpaquePass) {
            if (!this._showOverdrawInspector) {
                this.gl.disable(this.gl.BLEND);
            }
            this.isOpaquePass = true;
        } else {
            this.gl.enable(this.gl.BLEND);
            this.isOpaquePass = false;
            coords.reverse();
        }

        for (j = 0; j < group.length; j++) {
            var layer = group[isOpaquePass ? group.length - 1 - j : j];
            this.currentLayer += isOpaquePass ? -1 : 1;
            this.renderLayer(this, source, layer, coords);
        }

        if (source) {
            draw.debug(this, source, coords);
        }
    }
};

Painter.prototype.depthMask = function(mask) {
    if (mask !== this._depthMask) {
        this._depthMask = mask;
        this.gl.depthMask(mask);
    }
};

Painter.prototype.renderLayer = function(painter, source, layer, coords) {
    if (layer.isHidden(this.transform.zoom)) return;
    if (layer.type !== 'background' && !coords.length) return;
    this.id = layer.id;
    draw[layer.type](painter, source, layer, coords);
};

Painter.prototype.setDepthSublayer = function(n) {
    var farDepth = 1 - ((1 + this.currentLayer) * this.numSublayers + n) * this.depthEpsilon;
    var nearDepth = farDepth - 1 + this.depthRange;
    this.gl.depthRange(nearDepth, farDepth);
};

Painter.prototype.translatePosMatrix = function(matrix, tile, translate, anchor) {
    if (!translate[0] && !translate[1]) return matrix;

    if (anchor === 'viewport') {
        var sinA = Math.sin(-this.transform.angle);
        var cosA = Math.cos(-this.transform.angle);
        translate = [
            translate[0] * cosA - translate[1] * sinA,
            translate[0] * sinA + translate[1] * cosA
        ];
    }

    var translation = [
        pixelsToTileUnits(tile, translate[0], this.transform.zoom),
        pixelsToTileUnits(tile, translate[1], this.transform.zoom),
        0
    ];

    var translatedMatrix = new Float32Array(16);
    mat4.translate(translatedMatrix, matrix, translation);
    return translatedMatrix;
};

Painter.prototype.saveTexture = function(texture) {
    var textures = this.reusableTextures[texture.size];
    if (!textures) {
        this.reusableTextures[texture.size] = [texture];
    } else {
        textures.push(texture);
    }
};


Painter.prototype.getTexture = function(size) {
    var textures = this.reusableTextures[size];
    return textures && textures.length > 0 ? textures.pop() : null;
};

Painter.prototype.lineWidth = function(width) {
    this.gl.lineWidth(util.clamp(width, this.lineWidthRange[0], this.lineWidthRange[1]));
};

Painter.prototype.showOverdrawInspector = function(enabled) {
    if (!enabled && !this._showOverdrawInspector) return;
    this._showOverdrawInspector = enabled;

    var gl = this.gl;
    if (enabled) {
        gl.blendFunc(gl.CONSTANT_COLOR, gl.ONE);
        var numOverdrawSteps = 8;
        var a = 1 / numOverdrawSteps;
        gl.blendColor(a, a, a, 0);
        gl.clearColor(0, 0, 0, 1);
        gl.clear(gl.COLOR_BUFFER_BIT);
    } else {
        gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
    }
};

},{"../data/bucket":305,"../data/buffer":310,"../source/pixels_to_tile_units":339,"../source/source_cache":343,"../util/browser":402,"../util/struct_array":416,"../util/util":418,"./create_uniform_pragmas":320,"./draw_background":321,"./draw_circle":322,"./draw_debug":324,"./draw_fill":325,"./draw_line":326,"./draw_raster":327,"./draw_symbol":328,"./frame_history":329,"./painter/use_program":332,"./vertex_array_object":333,"gl-matrix":168}],332:[function(require,module,exports){
'use strict';

var assert = require('assert');
var util = require('../../util/util');
var shaders = require('mapbox-gl-shaders');

var utilSource = shaders.util;

module.exports._createProgram = function(name, defines, vertexPragmas, fragmentPragmas) {
    var gl = this.gl;
    var program = gl.createProgram();
    var definition = shaders[name];

    var definesSource = '#define MAPBOX_GL_JS;\n';
    for (var j = 0; j < defines.length; j++) {
        definesSource += '#define ' + defines[j] + ';\n';
    }

    var fragmentShader = gl.createShader(gl.FRAGMENT_SHADER);
    gl.shaderSource(fragmentShader, applyPragmas(definesSource + definition.fragmentSource, fragmentPragmas));
    gl.compileShader(fragmentShader);
    assert(gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(fragmentShader));
    gl.attachShader(program, fragmentShader);

    var vertexShader = gl.createShader(gl.VERTEX_SHADER);
    gl.shaderSource(vertexShader, applyPragmas(definesSource + utilSource + definition.vertexSource, vertexPragmas));
    gl.compileShader(vertexShader);
    assert(gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS), gl.getShaderInfoLog(vertexShader));
    gl.attachShader(program, vertexShader);

    gl.linkProgram(program);
    assert(gl.getProgramParameter(program, gl.LINK_STATUS), gl.getProgramInfoLog(program));

    var attributes = {};
    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
    for (var i = 0; i < numAttributes; i++) {
        var attribute = gl.getActiveAttrib(program, i);
        attributes[attribute.name] = gl.getAttribLocation(program, attribute.name);
    }

    var uniforms = {};
    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
    for (var ui = 0; ui < numUniforms; ui++) {
        var uniform = gl.getActiveUniform(program, ui);
        uniforms[uniform.name] = gl.getUniformLocation(program, uniform.name);
    }

    return util.extend({
        program: program,
        definition: definition,
        attributes: attributes,
        numAttributes: numAttributes
    }, attributes, uniforms);
};

module.exports._createProgramCached = function(name, defines, vertexPragmas, fragmentPragmas) {
    this.cache = this.cache || {};

    var key = JSON.stringify({
        name: name,
        defines: defines,
        vertexPragmas: vertexPragmas,
        fragmentPragmas: fragmentPragmas
    });

    if (!this.cache[key]) {
        this.cache[key] = this._createProgram(name, defines, vertexPragmas, fragmentPragmas);
    }
    return this.cache[key];
};

module.exports.useProgram = function (nextProgramName, defines, vertexPragmas, fragmentPragmas) {
    var gl = this.gl;

    defines = defines || [];
    if (this._showOverdrawInspector) {
        defines = defines.concat('OVERDRAW_INSPECTOR');
    }

    var nextProgram = this._createProgramCached(nextProgramName, defines, vertexPragmas, fragmentPragmas);
    var previousProgram = this.currentProgram;

    if (previousProgram !== nextProgram) {
        gl.useProgram(nextProgram.program);
        this.currentProgram = nextProgram;
    }

    return nextProgram;
};

function applyPragmas(source, pragmas) {
    return source.replace(/#pragma mapbox: ([\w]+) ([\w]+) ([\w]+) ([\w]+)/g, function(match, operation, precision, type, name) {
        return pragmas[operation][name].replace(/{type}/g, type).replace(/{precision}/g, precision);
    });
}

},{"../../util/util":418,"assert":9,"mapbox-gl-shaders":279}],333:[function(require,module,exports){
'use strict';

var assert = require('assert');

module.exports = VertexArrayObject;

function VertexArrayObject() {
    this.boundProgram = null;
    this.boundVertexBuffer = null;
    this.boundVertexBuffer2 = null;
    this.boundElementBuffer = null;
    this.vao = null;
}

VertexArrayObject.prototype.bind = function(gl, program, layoutVertexBuffer, elementBuffer, vertexBuffer2) {

    if (gl.extVertexArrayObject === undefined) {
        gl.extVertexArrayObject = gl.getExtension("OES_vertex_array_object");
    }

    var isFreshBindRequired = (
        !this.vao ||
        this.boundProgram !== program ||
        this.boundVertexBuffer !== layoutVertexBuffer ||
        this.boundVertexBuffer2 !== vertexBuffer2 ||
        this.boundElementBuffer !== elementBuffer
    );

    if (!gl.extVertexArrayObject || isFreshBindRequired) {
        this.freshBind(gl, program, layoutVertexBuffer, elementBuffer, vertexBuffer2);
    } else {
        gl.extVertexArrayObject.bindVertexArrayOES(this.vao);
    }
};

VertexArrayObject.prototype.freshBind = function(gl, program, layoutVertexBuffer, elementBuffer, vertexBuffer2) {
    var numPrevAttributes;
    var numNextAttributes = program.numAttributes;

    if (gl.extVertexArrayObject) {
        if (this.vao) this.destroy(gl);
        this.vao = gl.extVertexArrayObject.createVertexArrayOES();
        gl.extVertexArrayObject.bindVertexArrayOES(this.vao);
        numPrevAttributes = 0;

        // store the arguments so that we can verify them when the vao is bound again
        this.boundProgram = program;
        this.boundVertexBuffer = layoutVertexBuffer;
        this.boundVertexBuffer2 = vertexBuffer2;
        this.boundElementBuffer = elementBuffer;

    } else {
        numPrevAttributes = gl.currentNumAttributes || 0;

        // Disable all attributes from the previous program that aren't used in
        // the new program. Note: attribute indices are *not* program specific!
        for (var i = numNextAttributes; i < numPrevAttributes; i++) {
            // WebGL breaks if you disable attribute 0.
            // http://stackoverflow.com/questions/20305231
            assert(i !== 0);
            gl.disableVertexAttribArray(i);
        }
    }

    // Enable all attributes for the new program.
    for (var j = numPrevAttributes; j < numNextAttributes; j++) {
        gl.enableVertexAttribArray(j);
    }

    layoutVertexBuffer.bind(gl);
    layoutVertexBuffer.setVertexAttribPointers(gl, program);
    if (vertexBuffer2) {
        vertexBuffer2.bind(gl);
        vertexBuffer2.setVertexAttribPointers(gl, program);
    }
    if (elementBuffer) {
        elementBuffer.bind(gl);
    }

    gl.currentNumAttributes = numNextAttributes;
};

VertexArrayObject.prototype.unbind = function(gl) {
    var ext = gl.extVertexArrayObject;
    if (ext) {
        ext.bindVertexArrayOES(null);
    }
};

VertexArrayObject.prototype.destroy = function(gl) {
    var ext = gl.extVertexArrayObject;
    if (ext && this.vao) {
        ext.deleteVertexArrayOES(this.vao);
        this.vao = null;
    }
};

},{"assert":9}],334:[function(require,module,exports){
'use strict';

var Evented = require('../util/evented');
var util = require('../util/util');
var urlResolve = require('resolve-url');
var EXTENT = require('../data/bucket').EXTENT;

module.exports = GeoJSONSource;

/**
 * A source containing GeoJSON.
 *
 * @class GeoJSONSource
 * @param {Object} [options]
 * @param {Object|string} [options.data] A GeoJSON data object or a URL to one. The latter is preferable in the case of large GeoJSON objects.
 * @param {number} [options.maxzoom=18] The maximum zoom level at which to preserve detail (1-20).
 * @param {number} [options.buffer=128] The tile buffer, measured in pixels. The buffer extends each
 *   tile's data just past its visible edges, helping to ensure seamless rendering across tile boundaries.
 *   The default value, 128, is a safe value for label layers, preventing text clipping at boundaries.
 *   You can read more about buffers and clipping in the
 *   [Mapbox Vector Tile Specification](https://www.mapbox.com/vector-tiles/specification/#clipping).
 * @param {number} [options.tolerance=0.375] The simplification tolerance, measured in pixels.
 *   This value is passed into a modified [Ramer–Douglas–Peucker algorithm](https://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm)
 *   to simplify (i.e. reduce the number of points) in curves. Higher values result in greater simplification.
 * @param {boolean} [options.cluster] If `true`, a collection of point features will be clustered into groups,
 *   according to `options.clusterRadius`.
 * @param {number} [options.clusterRadius=50] The radius of each cluster when clustering points, measured in pixels.
 * @param {number} [options.clusterMaxZoom] The maximum zoom level to cluster points in. By default, this value is
 *   one zoom level less than the map's `maxzoom`, so that at the highest zoom level features are not clustered.
 *
 * @example
 * map.addSource('some id', {
 *     data: 'https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_10m_ports.geojson'
 * });
 *
 * @example
 * map.addSource('some id', {
 *    type: 'geojson',
 *    data: {
 *        "type": "FeatureCollection",
 *        "features": [{
 *            "type": "Feature",
 *            "geometry": {
 *                "type": "Point",
 *                "coordinates": [
 *                    -76.53063297271729,
 *                    39.18174077994108
 *                ]
 *            }
 *        }]
 *    }
 * });
 *
 * @example
 * map.getSource('some id').setData({
 *     data: {
 *        "type": "FeatureCollection",
 *        "features": [{
 *            "type": "Feature",
 *            "properties": { "name": "Null Island" },
 *            "geometry": {
 *                "type": "Point",
 *                "coordinates": [ 0, 0 ]
 *            }
 *        }]
 *     }
 * });
 */
function GeoJSONSource(id, options, dispatcher) {
    options = options || {};
    this.id = id;
    this.dispatcher = dispatcher;

    this._data = options.data;

    if (options.maxzoom !== undefined) this.maxzoom = options.maxzoom;
    if (options.type) this.type = options.type;

    var scale = EXTENT / this.tileSize;

    // sent to the worker, along with `url: ...` or `data: literal geojson`,
    // so that it can load/parse/index the geojson data
    // extending with `options.workerOptions` helps to make it easy for
    // third-party sources to hack/reuse GeoJSONSource.
    this.workerOptions = util.extend({
        source: this.id,
        cluster: options.cluster || false,
        geojsonVtOptions: {
            buffer: (options.buffer !== undefined ? options.buffer : 128) * scale,
            tolerance: (options.tolerance !== undefined ? options.tolerance : 0.375) * scale,
            extent: EXTENT,
            maxZoom: this.maxzoom
        },
        superclusterOptions: {
            maxZoom: Math.min(options.clusterMaxZoom, this.maxzoom - 1) || (this.maxzoom - 1),
            extent: EXTENT,
            radius: (options.clusterRadius || 50) * scale,
            log: false
        }
    }, options.workerOptions);

    this._updateWorkerData(function done(err) {
        if (err) {
            this.fire('error', {error: err});
            return;
        }
        this.fire('load');
    }.bind(this));
}

GeoJSONSource.prototype = util.inherit(Evented, /** @lends GeoJSONSource.prototype */ {
    // `type` is a property rather than a constant to make it easy for 3rd
    // parties to use GeoJSONSource to build their own source types.
    type: 'geojson',
    minzoom: 0,
    maxzoom: 18,
    tileSize: 512,
    isTileClipped: true,
    reparseOverscaled: true,

    onAdd: function (map) {
        this.map = map;
    },

    /**
     * Sets the GeoJSON data and re-renders the map.
     *
     * @param {Object|string} data A GeoJSON data object or a URL to one. The latter is preferable in the case of large GeoJSON files.
     * @returns {GeoJSONSource} this
     */
    setData: function(data) {
        this._data = data;

        this._updateWorkerData(function (err) {
            if (err) {
                return this.fire('error', { error: err });
            }
            this.fire('change');
        }.bind(this));

        return this;
    },

    /*
     * Responsible for invoking WorkerSource's geojson.loadData target, which
     * handles loading the geojson data and preparing to serve it up as tiles,
     * using geojson-vt or supercluster as appropriate.
     */
    _updateWorkerData: function(callback) {
        var options = util.extend({}, this.workerOptions);
        var data = this._data;
        if (typeof data === 'string') {
            options.url = typeof window != 'undefined' ? urlResolve(window.location.href, data) : data;
        } else {
            options.data = JSON.stringify(data);
        }

        // target {this.type}.loadData rather than literally geojson.loadData,
        // so that other geojson-like source types can easily reuse this
        // implementation
        this.workerID = this.dispatcher.send(this.type + '.loadData', options, function(err) {
            this._loaded = true;
            callback(err);

        }.bind(this));
    },

    loadTile: function (tile, callback) {
        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
        var params = {
            type: this.type,
            uid: tile.uid,
            coord: tile.coord,
            zoom: tile.coord.z,
            maxZoom: this.maxzoom,
            tileSize: this.tileSize,
            source: this.id,
            overscaling: overscaling,
            angle: this.map.transform.angle,
            pitch: this.map.transform.pitch,
            showCollisionBoxes: this.map.showCollisionBoxes
        };

        tile.workerID = this.dispatcher.send('load tile', params, function(err, data) {

            tile.unloadVectorData(this.map.painter);

            if (tile.aborted)
                return;

            if (err) {
                return callback(err);
            }

            tile.loadVectorData(data, this.map.style);

            if (tile.redoWhenDone) {
                tile.redoWhenDone = false;
                tile.redoPlacement(this);
            }

            return callback(null);

        }.bind(this), this.workerID);
    },

    abortTile: function(tile) {
        tile.aborted = true;
    },

    unloadTile: function(tile) {
        tile.unloadVectorData(this.map.painter);
        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, function() {}, tile.workerID);
    },

    serialize: function() {
        return {
            type: this.type,
            data: this._data
        };
    }
});

},{"../data/bucket":305,"../util/evented":410,"../util/util":418,"resolve-url":947}],335:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var ajax = require('../util/ajax');
var rewind = require('geojson-rewind');
var GeoJSONWrapper = require('./geojson_wrapper');
var vtpbf = require('vt-pbf');
var supercluster = require('supercluster');
var geojsonvt = require('geojson-vt');

var VectorTileWorkerSource = require('./vector_tile_worker_source');

module.exports = GeoJSONWorkerSource;

/**
 * The {@link WorkerSource} implementation that supports {@link GeoJSONSource}.
 * This class is designed to be easily reused to support custom source types
 * for data formats that can be parsed/converted into an in-memory GeoJSON
 * representation.  To do so, create it with
 * `new GeoJSONWorkerSource(actor, styleLayers, customLoadGeoJSONFunction)`.  For a full example, see [mapbox-gl-topojson](https://github.com/developmentseed/mapbox-gl-topojson).
 *
 * @class GeoJSONWorkerSource
 * @private
 * @param {Function} [loadGeoJSON] Optional method for custom loading/parsing of GeoJSON based on parameters passed from the main-thread Source.  See {@link GeoJSONWorkerSource#loadGeoJSON}.
 */
function GeoJSONWorkerSource (actor, styleLayers, loadGeoJSON) {
    if (loadGeoJSON) { this.loadGeoJSON = loadGeoJSON; }
    VectorTileWorkerSource.call(this, actor, styleLayers);
}

GeoJSONWorkerSource.prototype = util.inherit(VectorTileWorkerSource, /** @lends GeoJSONWorkerSource.prototype */ {
    // object mapping source ids to geojson-vt-like tile indexes
    _geoJSONIndexes: {},

    /**
     * See {@link VectorTileWorkerSource#loadTile}.
     */
    loadVectorData: function (params, callback) {
        var source = params.source,
            coord = params.coord;

        if (!this._geoJSONIndexes[source]) return callback(null, null); // we couldn't load the file

        var geoJSONTile = this._geoJSONIndexes[source].getTile(Math.min(coord.z, params.maxZoom), coord.x, coord.y);
        if (geoJSONTile) {
            var geojsonWrapper = new GeoJSONWrapper(geoJSONTile.features);
            geojsonWrapper.name = '_geojsonTileLayer';
            var pbf = vtpbf({ layers: { '_geojsonTileLayer': geojsonWrapper }});
            if (pbf.byteOffset !== 0 || pbf.byteLength !== pbf.buffer.byteLength) {
                // Compatibility with node Buffer (https://github.com/mapbox/pbf/issues/35)
                pbf = new Uint8Array(pbf);
            }
            callback(null, { tile: geojsonWrapper, rawTileData: pbf.buffer });
            // tile.parse(geojsonWrapper, this.layerFamilies, this.actor, rawTileData, callback);
        } else {
            return callback(null, null); // nothing in the given tile
        }
    },

    /**
     * Fetches (if appropriate), parses, and index geojson data into tiles. This
     * preparatory method must be called before {@link GeoJSONWorkerSource#loadTile}
     * can correctly serve up tiles.
     *
     * Defers to {@link GeoJSONWorkerSource#loadGeoJSON} for the fetching/parsing,
     * expecting `callback(error, data)` to be called with either an error or a
     * parsed GeoJSON object.
     * @param {object} params
     * @param {string} params.source The id of the source.
     * @param {Function} callback
     */
    loadData: function (params, callback) {
        var handleData = function(err, data) {
            if (err) return callback(err);
            if (typeof data != 'object') {
                return callback(new Error("Input data is not a valid GeoJSON object."));
            }
            rewind(data, true);
            this._indexData(data, params, function (err, indexed) {
                if (err) { return callback(err); }
                this._geoJSONIndexes[params.source] = indexed;
                callback(null);
            }.bind(this));
        }.bind(this);

        this.loadGeoJSON(params, handleData);
    },

    /**
     * Fetch and parse GeoJSON according to the given params.  Calls `callback`
     * with `(err, data)`, where `data` is a parsed GeoJSON object.
     *
     * GeoJSON is loaded and parsed from `params.url` if it exists, or else
     * expected as a literal (string or object) `params.data`.
     *
     * @param {object} params
     * @param {string} [params.url] A URL to the remote GeoJSON data.
     * @param {object} [params.data] Literal GeoJSON data. Must be provided if `params.url` is not.
     */
    loadGeoJSON: function (params, callback) {
        // Because of same origin issues, urls must either include an explicit
        // origin or absolute path.
        // ie: /foo/bar.json or http://example.com/bar.json
        // but not ../foo/bar.json
        if (params.url) {
            ajax.getJSON(params.url, callback);
        } else if (typeof params.data === 'string') {
            try {
                return callback(null, JSON.parse(params.data));
            } catch (e) {
                return callback(new Error("Input data is not a valid GeoJSON object."));
            }
        } else {
            return callback(new Error("Input data is not a valid GeoJSON object."));
        }
    },

    /**
     * Index the data using either geojson-vt or supercluster
     * @param {GeoJSON} data
     * @param {object} params forwarded from loadTile.
     * @param {callback} (err, indexedData)
     * @private
     */
    _indexData: function (data, params, callback) {
        try {
            if (params.cluster) {
                callback(null, supercluster(params.superclusterOptions).load(data.features));
            } else {
                callback(null, geojsonvt(data, params.geojsonVtOptions));
            }
        } catch (err) {
            return callback(err);
        }
    }
});

},{"../util/ajax":401,"../util/util":418,"./geojson_wrapper":336,"./vector_tile_worker_source":347,"geojson-rewind":103,"geojson-vt":107,"supercluster":980,"vt-pbf":1008}],336:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');
var VectorTileFeature = require('vector-tile').VectorTileFeature;
var EXTENT = require('../data/bucket').EXTENT;

module.exports = GeoJSONWrapper;

// conform to vectortile api
function GeoJSONWrapper(features) {
    this.features = features;
    this.length = features.length;
    this.extent = EXTENT;
}

GeoJSONWrapper.prototype.feature = function(i) {
    return new FeatureWrapper(this.features[i]);
};

function FeatureWrapper(feature) {
    this.type = feature.type;
    if (feature.type === 1) {
        this.rawGeometry = [];
        for (var i = 0; i < feature.geometry.length; i++) {
            this.rawGeometry.push([feature.geometry[i]]);
        }
    } else {
        this.rawGeometry = feature.geometry;
    }
    this.properties = feature.tags;
    this.extent = EXTENT;
}

FeatureWrapper.prototype.loadGeometry = function() {
    var rings = this.rawGeometry;
    this.geometry = [];

    for (var i = 0; i < rings.length; i++) {
        var ring = rings[i],
            newRing = [];
        for (var j = 0; j < ring.length; j++) {
            newRing.push(new Point(ring[j][0], ring[j][1]));
        }
        this.geometry.push(newRing);
    }
    return this.geometry;
};

FeatureWrapper.prototype.bbox = function() {
    if (!this.geometry) this.loadGeometry();

    var rings = this.geometry,
        x1 = Infinity,
        x2 = -Infinity,
        y1 = Infinity,
        y2 = -Infinity;

    for (var i = 0; i < rings.length; i++) {
        var ring = rings[i];

        for (var j = 0; j < ring.length; j++) {
            var coord = ring[j];

            x1 = Math.min(x1, coord.x);
            x2 = Math.max(x2, coord.x);
            y1 = Math.min(y1, coord.y);
            y2 = Math.max(y2, coord.y);
        }
    }

    return [x1, y1, x2, y2];
};

FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON;

},{"../data/bucket":305,"point-geometry":919,"vector-tile":1002}],337:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var TileCoord = require('./tile_coord');
var LngLat = require('../geo/lng_lat');
var Point = require('point-geometry');
var Evented = require('../util/evented');
var ajax = require('../util/ajax');
var EXTENT = require('../data/bucket').EXTENT;
var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
var Buffer = require('../data/buffer');
var VertexArrayObject = require('../render/vertex_array_object');

module.exports = ImageSource;

/**
 * A data source containing an image.
 * (See the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#sources-image) for detailed documentation of options.)
 *
 * @interface ImageSource
 * @example
 * // add to map
 * map.addSource('some id', {
 *    type: 'image',
 *    url: 'https://www.mapbox.com/images/foo.png',
 *    coordinates: [
 *        [-76.54, 39.18],
 *        [-76.52, 39.18],
 *        [-76.52, 39.17],
 *        [-76.54, 39.17]
 *    ]
 * });
 *
 * // update
 * var mySource = map.getSource('some id');
 * mySource.setCoordinates([
 *     [-76.54335737228394, 39.18579907229748],
 *     [-76.52803659439087, 39.1838364847587],
 *     [-76.5295386314392, 39.17683392507606],
 *     [-76.54520273208618, 39.17876344106642]
 * ]);
 *
 * map.removeSource('some id');  // remove
 */
function ImageSource(id, options, dispatcher) {
    this.id = id;
    this.dispatcher = dispatcher;
    this.url = options.url;
    this.coordinates = options.coordinates;

    ajax.getImage(options.url, function(err, image) {
        if (err) return this.fire('error', {error: err});

        this.image = image;

        this.image.addEventListener('load', function() {
            this.map._rerender();
        }.bind(this));

        this._loaded = true;
        this.fire('load');

        if (this.map) {
            this.setCoordinates(options.coordinates);
        }
    }.bind(this));
}

ImageSource.prototype = util.inherit(Evented, /** @lends ImageSource.prototype */ {
    minzoom: 0,
    maxzoom: 22,
    tileSize: 512,
    onAdd: function(map) {
        this.map = map;
        if (this.image) {
            this.setCoordinates(this.coordinates);
        }
    },

    /**
     * Sets the image's coordinates and re-renders the map.
     *
     * @param {Array<Array<number>>} coordinates Four geographical coordinates,
     *   represented as arrays of longitude and latitude numbers, which define the corners of the image.
     *   The coordinates start at the top left corner of the image and proceed in clockwise order.
     *   They do not have to represent a rectangle.
     * @returns {ImageSource} this
     */
    setCoordinates: function(coordinates) {
        this.coordinates = coordinates;

        // Calculate which mercator tile is suitable for rendering the video in
        // and create a buffer with the corner coordinates. These coordinates
        // may be outside the tile, because raster tiles aren't clipped when rendering.

        var map = this.map;
        var cornerZ0Coords = coordinates.map(function(coord) {
            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
        });

        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
        centerCoord.column = Math.round(centerCoord.column);
        centerCoord.row = Math.round(centerCoord.row);

        this.minzoom = this.maxzoom = centerCoord.zoom;
        this._coord = new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row);
        this._tileCoords = cornerZ0Coords.map(function(coord) {
            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
            return new Point(
                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
        });

        this.fire('change');
        return this;
    },

    _setTile: function (tile) {
        this._prepared = false;
        this.tile = tile;
        var maxInt16 = 32767;
        var array = new RasterBoundsArray();
        array.emplaceBack(this._tileCoords[0].x, this._tileCoords[0].y, 0, 0);
        array.emplaceBack(this._tileCoords[1].x, this._tileCoords[1].y, maxInt16, 0);
        array.emplaceBack(this._tileCoords[3].x, this._tileCoords[3].y, 0, maxInt16);
        array.emplaceBack(this._tileCoords[2].x, this._tileCoords[2].y, maxInt16, maxInt16);

        this.tile.buckets = {};

        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
        this.tile.boundsVAO = new VertexArrayObject();
        this.tile.state = 'loaded';
    },

    prepare: function() {
        if (!this._loaded || !this.image || !this.image.complete) return;
        if (!this.tile) return;

        var painter = this.map.painter;
        var gl = painter.gl;

        if (!this._prepared) {
            this.tile.texture = gl.createTexture();
            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
        } else {
            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.image);
        }
    },

    loadTile: function(tile, callback) {
        // We have a single tile -- whoose coordinates are this._coord -- that
        // covers the image we want to render.  If that's the one being
        // requested, set it up with the image; otherwise, mark the tile as
        // `errored` to indicate that we have no data for it.
        if (this._coord && this._coord.toString() === tile.coord.toString()) {
            this._setTile(tile);
            callback(null);
        } else {
            tile.state = 'errored';
            callback(null);
        }
    },

    serialize: function() {
        return {
            type: 'image',
            urls: this.url,
            coordinates: this.coordinates
        };
    }
});

},{"../data/bucket":305,"../data/buffer":310,"../geo/lng_lat":315,"../render/draw_raster":327,"../render/vertex_array_object":333,"../util/ajax":401,"../util/evented":410,"../util/util":418,"./tile_coord":345,"point-geometry":919}],338:[function(require,module,exports){
'use strict';
var util = require('../util/util');
var ajax = require('../util/ajax');
var browser = require('../util/browser');
var normalizeURL = require('../util/mapbox').normalizeSourceURL;

module.exports = function(options, callback) {
    var loaded = function(err, tileJSON) {
        if (err) {
            return callback(err);
        }

        var result = util.pick(tileJSON, ['tiles', 'minzoom', 'maxzoom', 'attribution']);

        if (tileJSON.vector_layers) {
            result.vectorLayers = tileJSON.vector_layers;
            result.vectorLayerIds = result.vectorLayers.map(function(layer) { return layer.id; });
        }

        callback(null, result);
    };

    if (options.url) {
        ajax.getJSON(normalizeURL(options.url), loaded);
    } else {
        browser.frame(loaded.bind(null, null, options));
    }
};


},{"../util/ajax":401,"../util/browser":402,"../util/mapbox":415,"../util/util":418}],339:[function(require,module,exports){
'use strict';

var Bucket = require('../data/bucket');

/**
 * Converts a pixel value at a the given zoom level to tile units.
 *
 * The shaders mostly calculate everything in tile units so style
 * properties need to be converted from pixels to tile units using this.
 *
 * For example, a translation by 30 pixels at zoom 6.5 will be a
 * translation by pixelsToTileUnits(30, 6.5) tile units.
 *
 * @param {object} tile a {Tile object} will work well, but any object that follows the format {coord: {TileCord object}, tileSize: {number}} will work
 * @param {number} pixelValue
 * @param {number} z
 * @returns {number} value in tile units
 * @private
 */
module.exports = function(tile, pixelValue, z) {
    return pixelValue * (Bucket.EXTENT / (tile.tileSize * Math.pow(2, z - tile.coord.z)));
};


},{"../data/bucket":305}],340:[function(require,module,exports){
'use strict';
var TileCoord = require('./tile_coord');

exports.rendered = function(sourceCache, styleLayers, queryGeometry, params, zoom, bearing) {
    var tilesIn = sourceCache.tilesIn(queryGeometry);

    tilesIn.sort(sortTilesIn);

    var renderedFeatureLayers = [];
    for (var r = 0; r < tilesIn.length; r++) {
        var tileIn = tilesIn[r];
        if (!tileIn.tile.featureIndex) continue;

        renderedFeatureLayers.push(tileIn.tile.featureIndex.query({
            queryGeometry: tileIn.queryGeometry,
            scale: tileIn.scale,
            tileSize: tileIn.tile.tileSize,
            bearing: bearing,
            params: params
        }, styleLayers));
    }
    return mergeRenderedFeatureLayers(renderedFeatureLayers);
};

exports.source = function(sourceCache, params) {
    var tiles = sourceCache.getRenderableIds().map(function(id) {
        return sourceCache.getTileByID(id);
    });

    var result = [];

    var dataTiles = {};
    for (var i = 0; i < tiles.length; i++) {
        var tile = tiles[i];
        var dataID = new TileCoord(Math.min(tile.sourceMaxZoom, tile.coord.z), tile.coord.x, tile.coord.y, 0).id;
        if (!dataTiles[dataID]) {
            dataTiles[dataID] = true;
            tile.querySourceFeatures(result, params);
        }
    }

    return result;
};

function sortTilesIn(a, b) {
    var coordA = a.coord;
    var coordB = b.coord;
    return (coordA.z - coordB.z) || (coordA.y - coordB.y) || (coordA.w - coordB.w) || (coordA.x - coordB.x);
}

function mergeRenderedFeatureLayers(tiles) {
    var result = tiles[0] || {};
    for (var i = 1; i < tiles.length; i++) {
        var tile = tiles[i];
        for (var layerID in tile) {
            var tileFeatures = tile[layerID];
            var resultFeatures = result[layerID];
            if (resultFeatures === undefined) {
                resultFeatures = result[layerID] = tileFeatures;
            } else {
                for (var f = 0; f < tileFeatures.length; f++) {
                    resultFeatures.push(tileFeatures[f]);
                }
            }
        }
    }
    return result;
}


},{"./tile_coord":345}],341:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var ajax = require('../util/ajax');
var Evented = require('../util/evented');
var loadTileJSON = require('./load_tilejson');
var normalizeURL = require('../util/mapbox').normalizeTileURL;

module.exports = RasterTileSource;

function RasterTileSource(id, options, dispatcher) {
    this.id = id;
    this.dispatcher = dispatcher;
    util.extend(this, util.pick(options, ['url', 'scheme', 'tileSize']));
    loadTileJSON(options, function (err, tileJSON) {
        if (err) {
            return this.fire('error', err);
        }
        util.extend(this, tileJSON);
        this.fire('load');
    }.bind(this));
}

RasterTileSource.prototype = util.inherit(Evented, {
    minzoom: 0,
    maxzoom: 22,
    roundZoom: true,
    scheme: 'xyz',
    tileSize: 512,
    _loaded: false,

    onAdd: function (map) {
        this.map = map;
    },

    serialize: function() {
        return {
            type: 'raster',
            url: this.url,
            tileSize: this.tileSize
        };
    },

    loadTile: function(tile, callback) {
        var url = normalizeURL(tile.coord.url(this.tiles, null, this.scheme), this.url, this.tileSize);

        tile.request = ajax.getImage(url, done.bind(this));

        function done(err, img) {
            delete tile.request;

            if (tile.aborted)
                return;

            if (err) {
                return callback(err);
            }

            var gl = this.map.painter.gl;
            tile.texture = this.map.painter.getTexture(img.width);
            if (tile.texture) {
                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
                gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, img);
            } else {
                tile.texture = gl.createTexture();
                gl.bindTexture(gl.TEXTURE_2D, tile.texture);
                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
                gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
                gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
                gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
                tile.texture.size = img.width;
            }
            gl.generateMipmap(gl.TEXTURE_2D);

            this.map.animationLoop.set(this.map.style.rasterFadeDuration);

            tile.state = 'loaded';

            callback(null);
        }
    },

    abortTile: function(tile) {
        if (tile.request) {
            tile.request.abort();
            delete tile.request;
        }
    },

    unloadTile: function(tile) {
        if (tile.texture) this.map.painter.saveTexture(tile.texture);
    }
});

},{"../util/ajax":401,"../util/evented":410,"../util/mapbox":415,"../util/util":418,"./load_tilejson":338}],342:[function(require,module,exports){
'use strict';

var util = require('../util/util');

var sourceTypes = {
    'vector': require('../source/vector_tile_source'),
    'raster': require('../source/raster_tile_source'),
    'geojson': require('../source/geojson_source'),
    'video': require('../source/video_source'),
    'image': require('../source/image_source')
};

/*
 * Creates a tiled data source instance given an options object.
 *
 * @param {string} id
 * @param {Object} source A source definition object compliant with [`mapbox-gl-style-spec`](https://www.mapbox.com/mapbox-gl-style-spec/#sources) or, for a third-party source type, with that type's requirements.
 * @param {string} options.type A source type like `raster`, `vector`, `video`, etc.
 * @param {Dispatcher} dispatcher
 * @returns {Source}
 */
exports.create = function(id, source, dispatcher) {
    source = new sourceTypes[source.type](id, source, dispatcher);

    if (source.id !== id) {
        throw new Error('Expected Source id to be ' + id + ' instead of ' + source.id);
    }

    util.bindAll(['load', 'abort', 'unload', 'serialize', 'prepare'], source);
    return source;
};

exports.getType = function (name) {
    return sourceTypes[name];
};

exports.setType = function (name, type) {
    sourceTypes[name] = type;
};

/**
 * The `Source` interface must be implemented by each source type, including "core" types (`vector`, `raster`, `video`, etc.) and all custom, third-party types.
 *
 * @class Source
 * @private
 *
 * @param {string} id The id for the source. Must not be used by any existing source.
 * @param {Object} options Source options, specific to the source type (except for `options.type`, which is always required).
 * @param {string} options.type The source type, matching the value of `name` used in {@link Style#addSourceType}.
 * @param {Dispatcher} dispatcher A {@link Dispatcher} instance, which can be used to send messages to the workers.
 *
 * @fires load to indicate source data has been loaded, so that it's okay to call `loadTile`
 * @fires change to indicate source data has changed, so that any current caches should be flushed
 * @property {string} id The id for the source.  Must match the id passed to the constructor.
 * @property {number} minzoom
 * @property {number} maxzoom
 * @property {boolean} isTileClipped `false` if tiles can be drawn outside their boundaries, `true` if they cannot.
 * @property {boolean} reparseOverscaled `true` if tiles should be sent back to the worker for each overzoomed zoom level, `false` if not.
 * @property {boolean} roundZoom `true` if zoom levels are rounded to the nearest integer in the source data, `false` if they are floor-ed to the nearest integer.
 */

/**
 * An optional URL to a script which, when run by a Worker, registers a {@link WorkerSource} implementation for this Source type by calling `self.registerWorkerSource(workerSource: WorkerSource)`.
 *
 * @member {URL|undefined} workerSourceURL
 * @memberof Source
 * @static
 */

/**
 * @method
 * @name loadTile
 * @param {Tile} tile
 * @param {Funtion} callback Called when tile has been loaded
 * @memberof Source
 * @instance
 */

/**
 * @method
 * @name abortTile
 * @param {Tile} tile
 * @memberof Source
 * @instance
 */

/**
 * @method
 * @name unloadTile
 * @param {Tile} tile
 * @memberof Source
 * @instance
 */

/**
 * @method
 * @name serialize
 * @returns {Object} A plain (stringifiable) JS object representing the current state of the source. Creating a source using the returned object as the `options` should result in a Source that is equivalent to this one.
 * @memberof Source
 * @instance
 */

/**
 * @method
 * @name prepare
 * @memberof Source
 * @instance
 */



/**
 * May be implemented by custom source types to provide code that can be run on
 * the WebWorkers. In addition to providing a custom
 * {@link WorkerSource#loadTile}, any other methods attached to a `WorkerSource`
 * implementation may also be targeted by the {@link Source} via
 * `dispatcher.send('source-type.methodname', params, callback)`.
 *
 * @see {@link Map#addSourceType}
 * @private
 *
 * @class WorkerSource
 * @param {Actor} actor
 * @param {object} styleLayers An accessor provided by the Worker to get the current style layers and layer families.
 * @param {Function} styleLayers.getLayers
 * @param {Function} styleLayers.getLayerFamilies
 */

/**
 * Loads a tile from the given params and parse it into buckets ready to send
 * back to the main thread for rendering.  Should call the callback with:
 * `{ buckets, featureIndex, collisionTile, symbolInstancesArray, symbolQuadsArray, rawTileData}`.
 *
 * @method
 * @name loadTile
 * @param {object} params Parameters sent by the main-thread Source identifying the tile to load.
 * @param {Function} callback
 * @memberof WorkerSource
 * @instance
 */

/**
 * Re-parses a tile that has already been loaded.  Yields the same data as
 * {@link WorkerSource#loadTile}.
 *
 * @method
 * @name reloadTile
 * @param {object} params
 * @param {Function} callback
 * @memberof WorkerSource
 * @instance
 */

/**
 * Aborts loading a tile that is in progress.
 * @method
 * @name abortTile
 * @param {object} params
 * @memberof WorkerSource
 * @instance
 */

/**
 * Removes this tile from any local caches.
 * @method
 * @name removeTile
 * @memberof WorkerSource
 * @instance
 */

},{"../source/geojson_source":334,"../source/image_source":337,"../source/raster_tile_source":341,"../source/vector_tile_source":346,"../source/video_source":348,"../util/util":418}],343:[function(require,module,exports){
'use strict';

var Source = require('./source');
var Tile = require('./tile');
var Evented = require('../util/evented');
var TileCoord = require('./tile_coord');
var Cache = require('../util/lru_cache');
var Coordinate = require('../geo/coordinate');
var util = require('../util/util');
var EXTENT = require('../data/bucket').EXTENT;

module.exports = SourceCache;

/**
 * A tile pyramid is a specialized cache and datastructure
 * that contains tiles. It's used by sources to manage their
 * data.
 *
 * @param {Object} options
 * @private
 */
function SourceCache(id, options, dispatcher) {
    this.id = id;
    this.dispatcher = dispatcher;

    var source = this._source = Source.create(id, options, dispatcher)
    .on('load', function () {
        if (this.map && this._source.onAdd) { this._source.onAdd(this.map); }

        this._sourceLoaded = true;

        this.tileSize = source.tileSize;
        this.minzoom = source.minzoom;
        this.maxzoom = source.maxzoom;
        this.roundZoom = source.roundZoom;
        this.reparseOverscaled = source.reparseOverscaled;
        this.isTileClipped = source.isTileClipped;
        this.attribution = source.attribution;

        this.vectorLayerIds = source.vectorLayerIds;

        this.fire('load');
    }.bind(this))
    .on('error', function (e) {
        this._sourceErrored = true;
        this.fire('error', e);
    }.bind(this))
    .on('change', function () {
        this.reload();
        if (this.transform) {
            this.update(this.transform, this.map && this.map.style.rasterFadeDuration);
        }
        this.fire('change');
    }.bind(this));

    this._tiles = {};
    this._cache = new Cache(0, this.unloadTile.bind(this));

    this._isIdRenderable = this._isIdRenderable.bind(this);
}


SourceCache.maxOverzooming = 10;
SourceCache.maxUnderzooming = 3;

SourceCache.prototype = util.inherit(Evented, {
    onAdd: function (map) {
        this.map = map;
        if (this._source && this._source.onAdd) {
            this._source.onAdd(map);
        }
    },

    /**
     * Return true if no tile data is pending, tiles will not change unless
     * an additional API call is received.
     * @returns {boolean}
     * @private
     */
    loaded: function() {
        if (this._sourceErrored) { return true; }
        if (!this._sourceLoaded) { return false; }
        for (var t in this._tiles) {
            var tile = this._tiles[t];
            if (tile.state !== 'loaded' && tile.state !== 'errored')
                return false;
        }
        return true;
    },

    /**
     * @returns {Source} The underlying source object
     * @private
     */
    getSource: function () {
        return this._source;
    },

    loadTile: function (tile, callback) {
        return this._source.loadTile(tile, callback);
    },

    unloadTile: function (tile) {
        if (this._source.unloadTile)
            return this._source.unloadTile(tile);
    },

    abortTile: function (tile) {
        if (this._source.abortTile)
            return this._source.abortTile(tile);
    },

    serialize: function () {
        return this._source.serialize();
    },

    prepare: function () {
        if (this._sourceLoaded && this._source.prepare)
            return this._source.prepare();
    },

    /**
     * Return all tile ids ordered with z-order, and cast to numbers
     * @returns {Array<number>} ids
     * @private
     */
    getIds: function() {
        return Object.keys(this._tiles).map(Number).sort(compareKeyZoom);
    },

    getRenderableIds: function() {
        return this.getIds().filter(this._isIdRenderable);
    },

    _isIdRenderable: function(id) {
        return this._tiles[id].isRenderable() && !this._coveredTiles[id];
    },

    reload: function() {
        this._cache.reset();
        for (var i in this._tiles) {
            var tile = this._tiles[i];

            // The difference between "loading" tiles and "reloading" tiles is
            // that "reloading" tiles are "renderable". Therefore, a "loading"
            // tile cannot become a "reloading" tile without first becoming
            // a "loaded" tile.
            if (tile.state !== 'loading') {
                tile.state = 'reloading';
            }

            this.loadTile(this._tiles[i], this._tileLoaded.bind(this, this._tiles[i]));
        }
    },

    _tileLoaded: function (tile, err) {
        if (err) {
            tile.state = 'errored';
            this.fire('tile.error', {tile: tile, error: err});
            this._source.fire('tile.error', {tile: tile, error: err});
            return;
        }

        tile.source = this;
        tile.timeAdded = new Date().getTime();
        this.fire('tile.load', {tile: tile});
        this._source.fire('tile.load', {tile: tile});
    },

    /**
     * Get a specific tile by TileCoordinate
     * @param {TileCoordinate} coord
     * @returns {Object} tile
     * @private
     */
    getTile: function(coord) {
        return this.getTileByID(coord.id);
    },

    /**
     * Get a specific tile by id
     * @param {number|string} id
     * @returns {Object} tile
     * @private
     */
    getTileByID: function(id) {
        return this._tiles[id];
    },

    /**
     * get the zoom level adjusted for the difference in map and source tilesizes
     * @param {Object} transform
     * @returns {number} zoom level
     * @private
     */
    getZoom: function(transform) {
        return transform.zoom + transform.scaleZoom(transform.tileSize / this.tileSize);
    },

    /**
     * Recursively find children of the given tile (up to maxCoveringZoom) that are already loaded;
     * adds found tiles to retain object; returns true if any child is found.
     *
     * @param {Coordinate} coord
     * @param {number} maxCoveringZoom
     * @param {boolean} retain
     * @returns {boolean} whether the operation was complete
     * @private
     */
    findLoadedChildren: function(coord, maxCoveringZoom, retain) {
        var found = false;

        for (var id in this._tiles) {
            var tile = this._tiles[id];

            // only consider renderable tiles on higher zoom levels (up to maxCoveringZoom)
            if (retain[id] || !tile.isRenderable() || tile.coord.z <= coord.z || tile.coord.z > maxCoveringZoom) continue;

            // disregard tiles that are not descendants of the given tile coordinate
            var z2 = Math.pow(2, Math.min(tile.coord.z, this.maxzoom) - Math.min(coord.z, this.maxzoom));
            if (Math.floor(tile.coord.x / z2) !== coord.x ||
                Math.floor(tile.coord.y / z2) !== coord.y)
                continue;

            // found loaded child
            retain[id] = true;
            found = true;

            // loop through parents; retain the topmost loaded one if found
            while (tile && tile.coord.z - 1 > coord.z) {
                var parentId = tile.coord.parent(this.maxzoom).id;
                tile = this._tiles[parentId];

                if (tile && tile.isRenderable()) {
                    delete retain[id];
                    retain[parentId] = true;
                }
            }
        }
        return found;
    },

    /**
     * Find a loaded parent of the given tile (up to minCoveringZoom);
     * adds the found tile to retain object and returns the tile if found
     *
     * @param {Coordinate} coord
     * @param {number} minCoveringZoom
     * @param {boolean} retain
     * @returns {Tile} tile object
     * @private
     */
    findLoadedParent: function(coord, minCoveringZoom, retain) {
        for (var z = coord.z - 1; z >= minCoveringZoom; z--) {
            coord = coord.parent(this.maxzoom);
            var tile = this._tiles[coord.id];
            if (tile && tile.isRenderable()) {
                retain[coord.id] = true;
                return tile;
            }
            if (this._cache.has(coord.id)) {
                this.addTile(coord);
                retain[coord.id] = true;
                return this._tiles[coord.id];
            }
        }
    },

    /**
     * Resizes the tile cache based on the current viewport's size.
     *
     * Larger viewports use more tiles and need larger caches. Larger viewports
     * are more likely to be found on devices with more memory and on pages where
     * the map is more important.
     *
     * @private
     */
    updateCacheSize: function(transform) {
        var widthInTiles = Math.ceil(transform.width / transform.tileSize) + 1;
        var heightInTiles = Math.ceil(transform.height / transform.tileSize) + 1;
        var approxTilesInView = widthInTiles * heightInTiles;
        var commonZoomRange = 5;
        this._cache.setMaxSize(Math.floor(approxTilesInView * commonZoomRange));
    },

    /**
     * Removes tiles that are outside the viewport and adds new tiles that
     * are inside the viewport.
     * @private
     */
    update: function(transform, fadeDuration) {
        if (!this._sourceLoaded) { return; }
        var i;
        var coord;
        var tile;

        this.updateCacheSize(transform);

        // Determine the overzooming/underzooming amounts.
        var zoom = (this.roundZoom ? Math.round : Math.floor)(this.getZoom(transform));
        var minCoveringZoom = Math.max(zoom - SourceCache.maxOverzooming, this.minzoom);
        var maxCoveringZoom = Math.max(zoom + SourceCache.maxUnderzooming,  this.minzoom);

        // Retain is a list of tiles that we shouldn't delete, even if they are not
        // the most ideal tile for the current viewport. This may include tiles like
        // parent or child tiles that are *already* loaded.
        var retain = {};
        var now = new Date().getTime();

        // Covered is a list of retained tiles who's areas are full covered by other,
        // better, retained tiles. They are not drawn separately.
        this._coveredTiles = {};

        var required = this.used ? transform.coveringTiles(this._source) : [];
        for (i = 0; i < required.length; i++) {
            coord = required[i];
            tile = this.addTile(coord);

            retain[coord.id] = true;

            if (tile.isRenderable())
                continue;

            // The tile we require is not yet loaded.
            // Retain child or parent tiles that cover the same area.
            if (!this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
                this.findLoadedParent(coord, minCoveringZoom, retain);
            }
        }

        var parentsForFading = {};

        var ids = Object.keys(retain);
        for (var k = 0; k < ids.length; k++) {
            var id = ids[k];
            coord = TileCoord.fromID(id);
            tile = this._tiles[id];
            if (tile && tile.timeAdded > now - (fadeDuration || 0)) {
                // This tile is still fading in. Find tiles to cross-fade with it.
                if (this.findLoadedChildren(coord, maxCoveringZoom, retain)) {
                    retain[id] = true;
                }
                this.findLoadedParent(coord, minCoveringZoom, parentsForFading);
            }
        }

        var fadedParent;
        for (fadedParent in parentsForFading) {
            if (!retain[fadedParent]) {
                // If a tile is only needed for fading, mark it as covered so that it isn't rendered on it's own.
                this._coveredTiles[fadedParent] = true;
            }
        }
        for (fadedParent in parentsForFading) {
            retain[fadedParent] = true;
        }

        // Remove the tiles we don't need anymore.
        var remove = util.keysDifference(this._tiles, retain);
        for (i = 0; i < remove.length; i++) {
            this.removeTile(+remove[i]);
        }

        this.transform = transform;
    },

    /**
     * Add a tile, given its coordinate, to the pyramid.
     * @param {Coordinate} coord
     * @returns {Coordinate} the coordinate.
     * @private
     */
    addTile: function(coord) {
        var tile = this._tiles[coord.id];
        if (tile)
            return tile;

        var wrapped = coord.wrapped();
        tile = this._tiles[wrapped.id];

        if (!tile) {
            tile = this._cache.get(wrapped.id);
            if (tile && this._redoPlacement) {
                this._redoPlacement(tile);
            }
        }

        if (!tile) {
            var zoom = coord.z;
            var overscaling = zoom > this.maxzoom ? Math.pow(2, zoom - this.maxzoom) : 1;
            tile = new Tile(wrapped, this.tileSize * overscaling, this.maxzoom);
            this.loadTile(tile, this._tileLoaded.bind(this, tile));
        }

        tile.uses++;
        this._tiles[coord.id] = tile;
        this.fire('tile.add', {tile: tile});
        this._source.fire('tile.add', {tile: tile});

        return tile;
    },

    /**
     * Remove a tile, given its id, from the pyramid
     * @param {string|number} id tile id
     * @returns {undefined} nothing
     * @private
     */
    removeTile: function(id) {
        var tile = this._tiles[id];
        if (!tile)
            return;

        tile.uses--;
        delete this._tiles[id];
        this.fire('tile.remove', {tile: tile});
        this._source.fire('tile.remove', {tile: tile});

        if (tile.uses > 0)
            return;

        if (tile.isRenderable()) {
            this._cache.add(tile.coord.wrapped().id, tile);
        } else {
            tile.aborted = true;
            this.abortTile(tile);
            this.unloadTile(tile);
        }
    },

    /**
     * Remove all tiles from this pyramid
     * @private
     */
    clearTiles: function() {
        for (var id in this._tiles)
            this.removeTile(id);
        this._cache.reset();
    },

    /**
     * Search through our current tiles and attempt to find the tiles that
     * cover the given bounds.
     * @param {Array<Coordinate>} queryGeometry coordinates of the corners of bounding rectangle
     * @returns {Array<Object>} result items have {tile, minX, maxX, minY, maxY}, where min/max bounding values are the given bounds transformed in into the coordinate space of this tile.
     * @private
     */
    tilesIn: function(queryGeometry) {
        var tileResults = {};
        var ids = this.getIds();

        var minX = Infinity;
        var minY = Infinity;
        var maxX = -Infinity;
        var maxY = -Infinity;
        var z = queryGeometry[0].zoom;

        for (var k = 0; k < queryGeometry.length; k++) {
            var p = queryGeometry[k];
            minX = Math.min(minX, p.column);
            minY = Math.min(minY, p.row);
            maxX = Math.max(maxX, p.column);
            maxY = Math.max(maxY, p.row);
        }

        for (var i = 0; i < ids.length; i++) {
            var tile = this._tiles[ids[i]];
            var coord = TileCoord.fromID(ids[i]);

            var tileSpaceBounds = [
                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(minX, minY, z)),
                coordinateToTilePoint(coord, tile.sourceMaxZoom, new Coordinate(maxX, maxY, z))
            ];

            if (tileSpaceBounds[0].x < EXTENT && tileSpaceBounds[0].y < EXTENT &&
                tileSpaceBounds[1].x >= 0 && tileSpaceBounds[1].y >= 0) {

                var tileSpaceQueryGeometry = [];
                for (var j = 0; j < queryGeometry.length; j++) {
                    tileSpaceQueryGeometry.push(coordinateToTilePoint(coord, tile.sourceMaxZoom, queryGeometry[j]));
                }

                var tileResult = tileResults[tile.coord.id];
                if (tileResult === undefined) {
                    tileResult = tileResults[tile.coord.id] = {
                        tile: tile,
                        coord: coord,
                        queryGeometry: [],
                        scale: Math.pow(2, this.transform.zoom - tile.coord.z)
                    };
                }

                // Wrapped tiles share one tileResult object but can have multiple queryGeometry parts
                tileResult.queryGeometry.push(tileSpaceQueryGeometry);
            }
        }

        var results = [];
        for (var t in tileResults) {
            results.push(tileResults[t]);
        }
        return results;
    },

    redoPlacement: function () {
        var ids = this.getIds();
        for (var i = 0; i < ids.length; i++) {
            var tile = this.getTileByID(ids[i]);
            tile.redoPlacement(this);
        }
    },

    getVisibleCoordinates: function () {
        return this.getRenderableIds().map(TileCoord.fromID);
    }
});

/**
 * Convert a coordinate to a point in a tile's coordinate space.
 * @param {Coordinate} tileCoord
 * @param {Coordinate} coord
 * @returns {Object} position
 * @private
 */
function coordinateToTilePoint(tileCoord, sourceMaxZoom, coord) {
    var zoomedCoord = coord.zoomTo(Math.min(tileCoord.z, sourceMaxZoom));
    return {
        x: (zoomedCoord.column - (tileCoord.x + tileCoord.w * Math.pow(2, tileCoord.z))) * EXTENT,
        y: (zoomedCoord.row - tileCoord.y) * EXTENT
    };

}

function compareKeyZoom(a, b) {
    return (a % 32) - (b % 32);
}

},{"../data/bucket":305,"../geo/coordinate":314,"../util/evented":410,"../util/lru_cache":414,"../util/util":418,"./source":342,"./tile":344,"./tile_coord":345}],344:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var Bucket = require('../data/bucket');
var FeatureIndex = require('../data/feature_index');
var vt = require('vector-tile');
var Protobuf = require('pbf');
var GeoJSONFeature = require('../util/vectortile_to_geojson');
var featureFilter = require('feature-filter');
var CollisionTile = require('../symbol/collision_tile');
var CollisionBoxArray = require('../symbol/collision_box');
var SymbolInstancesArray = require('../symbol/symbol_instances');
var SymbolQuadsArray = require('../symbol/symbol_quads');

module.exports = Tile;

/**
 * A tile object is the combination of a Coordinate, which defines
 * its place, as well as a unique ID and data tracking for its content
 *
 * @param {Coordinate} coord
 * @param {number} size
 * @private
 */
function Tile(coord, size, sourceMaxZoom) {
    this.coord = coord;
    this.uid = util.uniqueId();
    this.uses = 0;
    this.tileSize = size;
    this.sourceMaxZoom = sourceMaxZoom;
    this.buckets = {};

    // `this.state` must be one of
    //
    // - `loading`:   Tile data is in the process of loading.
    // - `loaded`:    Tile data has been loaded. Tile can be rendered.
    // - `reloading`: Tile data has been loaded and is being updated. Tile can be rendered.
    // - `unloaded`:  Tile data has been deleted.
    // - `errored`:   Tile data was not loaded because of an error.
    this.state = 'loading';
}

Tile.prototype = {

    /**
     * Given a data object with a 'buffers' property, load it into
     * this tile's elementGroups and buffers properties and set loaded
     * to true. If the data is null, like in the case of an empty
     * GeoJSON tile, no-op but still set loaded to true.
     * @param {Object} data
     * @returns {undefined}
     * @private
     */
    loadVectorData: function(data, style) {
        this.state = 'loaded';

        // empty GeoJSON tile
        if (!data) return;

        this.collisionBoxArray = new CollisionBoxArray(data.collisionBoxArray);
        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
        this.symbolInstancesArray = new SymbolInstancesArray(data.symbolInstancesArray);
        this.symbolQuadsArray = new SymbolQuadsArray(data.symbolQuadsArray);
        this.featureIndex = new FeatureIndex(data.featureIndex, data.rawTileData, this.collisionTile);
        this.rawTileData = data.rawTileData;
        this.buckets = unserializeBuckets(data.buckets, style);
    },

    /**
     * given a data object and a GL painter, destroy and re-create
     * all of its buffers.
     * @param {Object} data
     * @param {Object} painter
     * @returns {undefined}
     * @private
     */
    reloadSymbolData: function(data, painter, style) {
        if (this.state === 'unloaded') return;

        this.collisionTile = new CollisionTile(data.collisionTile, this.collisionBoxArray);
        this.featureIndex.setCollisionTile(this.collisionTile);

        // Destroy and delete existing symbol buckets
        for (var id in this.buckets) {
            var bucket = this.buckets[id];
            if (bucket.type === 'symbol') {
                bucket.destroy(painter.gl);
                delete this.buckets[id];
            }
        }

        // Add new symbol buckets
        util.extend(this.buckets, unserializeBuckets(data.buckets, style));
    },

    /**
     * Make sure that this tile doesn't own any data within a given
     * painter, so that it doesn't consume any memory or maintain
     * any references to the painter.
     * @param {Object} painter gl painter object
     * @returns {undefined}
     * @private
     */
    unloadVectorData: function(painter) {
        for (var id in this.buckets) {
            var bucket = this.buckets[id];
            bucket.destroy(painter.gl);
        }

        this.collisionBoxArray = null;
        this.symbolQuadsArray = null;
        this.symbolInstancesArray = null;
        this.collisionTile = null;
        this.featureIndex = null;
        this.rawTileData = null;
        this.buckets = null;
        this.state = 'unloaded';
    },

    redoPlacement: function(source) {
        if (this.state !== 'loaded' || this.state === 'reloading') {
            this.redoWhenDone = true;
            return;
        }

        this.state = 'reloading';

        source.dispatcher.send('redo placement', {
            uid: this.uid,
            source: source.id,
            angle: source.map.transform.angle,
            pitch: source.map.transform.pitch,
            showCollisionBoxes: source.map.showCollisionBoxes
        }, done.bind(this), this.workerID);

        function done(_, data) {
            this.reloadSymbolData(data, source.map.painter, source.map.style);
            source.fire('tile.load', {tile: this});

            this.state = 'loaded';
            if (this.redoWhenDone) {
                this.redoPlacement(source);
                this.redoWhenDone = false;
            }
        }
    },

    getBucket: function(layer) {
        return this.buckets && this.buckets[layer.ref || layer.id];
    },

    querySourceFeatures: function(result, params) {
        if (!this.rawTileData) return;

        if (!this.vtLayers) {
            this.vtLayers = new vt.VectorTile(new Protobuf(new Uint8Array(this.rawTileData))).layers;
        }

        var layer = this.vtLayers._geojsonTileLayer || this.vtLayers[params.sourceLayer];

        if (!layer) return;

        var filter = featureFilter(params.filter);
        var coord = { z: this.coord.z, x: this.coord.x, y: this.coord.y };

        for (var i = 0; i < layer.length; i++) {
            var feature = layer.feature(i);
            if (filter(feature)) {
                var geojsonFeature = new GeoJSONFeature(feature, this.coord.z, this.coord.x, this.coord.y);
                geojsonFeature.tile = coord;
                result.push(geojsonFeature);
            }
        }
    },

    isRenderable: function() {
        return this.state === 'loaded' || this.state === 'reloading';
    }
};

function unserializeBuckets(input, style) {
    // Guard against the case where the map's style has been set to null while
    // this bucket has been parsing.
    if (!style) return;

    var output = {};
    for (var i = 0; i < input.length; i++) {
        var layer = style.getLayer(input[i].layerId);
        if (!layer) continue;

        var bucket = Bucket.create(util.extend({
            layer: layer,
            childLayers: input[i].childLayerIds
                .map(style.getLayer.bind(style))
                .filter(function(layer) { return layer; })
        }, input[i]));
        output[bucket.id] = bucket;
    }
    return output;
}

},{"../data/bucket":305,"../data/feature_index":312,"../symbol/collision_box":370,"../symbol/collision_tile":372,"../symbol/symbol_instances":381,"../symbol/symbol_quads":382,"../util/util":418,"../util/vectortile_to_geojson":419,"feature-filter":98,"pbf":465,"vector-tile":1002}],345:[function(require,module,exports){
'use strict';

var assert = require('assert');
var WhooTS = require('whoots-js');
var Coordinate = require('../geo/coordinate');

module.exports = TileCoord;

function TileCoord(z, x, y, w) {
    assert(!isNaN(z) && z >= 0 && z % 1 === 0);
    assert(!isNaN(x) && x >= 0 && x % 1 === 0);
    assert(!isNaN(y) && y >= 0 && y % 1 === 0);

    if (isNaN(w)) w = 0;

    this.z = +z;
    this.x = +x;
    this.y = +y;
    this.w = +w;

    // calculate id
    w *= 2;
    if (w < 0) w = w * -1 - 1;
    var dim = 1 << this.z;
    this.id = ((dim * dim * w + dim * this.y + this.x) * 32) + this.z;

    // for caching pos matrix calculation when rendering
    this.posMatrix = null;
}

TileCoord.prototype.toString = function() {
    return this.z + "/" + this.x + "/" + this.y;
};

TileCoord.prototype.toCoordinate = function(sourceMaxZoom) {
    var zoom = Math.min(this.z, sourceMaxZoom);
    var tileScale = Math.pow(2, zoom);
    var row = this.y;
    var column = this.x + tileScale * this.w;
    return new Coordinate(column, row, zoom);
};

// Parse a packed integer id into a TileCoord object
TileCoord.fromID = function(id) {
    var z = id % 32, dim = 1 << z;
    var xy = ((id - z) / 32);
    var x = xy % dim, y = ((xy - x) / dim) % dim;
    var w = Math.floor(xy / (dim * dim));
    if (w % 2 !== 0) w = w * -1 - 1;
    w /= 2;
    return new TileCoord(z, x, y, w);
};

function getQuadkey(z, x, y) {
    var quadkey = '', mask;
    for (var i = z; i > 0; i--) {
        mask = 1 << (i - 1);
        quadkey += ((x & mask ? 1 : 0) + (y & mask ? 2 : 0));
    }
    return quadkey;
}

// given a list of urls, choose a url template and return a tile URL
TileCoord.prototype.url = function(urls, sourceMaxZoom, scheme) {
    var bbox = WhooTS.getTileBBox(this.x, this.y, this.z);
    var quadkey = getQuadkey(this.z, this.x, this.y);

    return urls[(this.x + this.y) % urls.length]
        .replace('{prefix}', (this.x % 16).toString(16) + (this.y % 16).toString(16))
        .replace('{z}', Math.min(this.z, sourceMaxZoom || this.z))
        .replace('{x}', this.x)
        .replace('{y}', scheme === 'tms' ? (Math.pow(2, this.z) - this.y - 1) : this.y)
        .replace('{quadkey}', quadkey)
        .replace('{bbox-epsg-3857}', bbox);
};

// Return the coordinate of the parent tile
TileCoord.prototype.parent = function(sourceMaxZoom) {
    if (this.z === 0) return null;

    // the id represents an overscaled tile, return the same coordinates with a lower z
    if (this.z > sourceMaxZoom) {
        return new TileCoord(this.z - 1, this.x, this.y, this.w);
    }

    return new TileCoord(this.z - 1, Math.floor(this.x / 2), Math.floor(this.y / 2), this.w);
};

TileCoord.prototype.wrapped = function() {
    return new TileCoord(this.z, this.x, this.y, 0);
};

// Return the coordinates of the tile's children
TileCoord.prototype.children = function(sourceMaxZoom) {

    if (this.z >= sourceMaxZoom) {
        // return a single tile coord representing a an overscaled tile
        return [new TileCoord(this.z + 1, this.x, this.y, this.w)];
    }

    var z = this.z + 1;
    var x = this.x * 2;
    var y = this.y * 2;
    return [
        new TileCoord(z, x, y, this.w),
        new TileCoord(z, x + 1, y, this.w),
        new TileCoord(z, x, y + 1, this.w),
        new TileCoord(z, x + 1, y + 1, this.w)
    ];
};

// Taken from polymaps src/Layer.js
// https://github.com/simplegeo/polymaps/blob/master/src/Layer.js#L333-L383

function edge(a, b) {
    if (a.row > b.row) { var t = a; a = b; b = t; }
    return {
        x0: a.column,
        y0: a.row,
        x1: b.column,
        y1: b.row,
        dx: b.column - a.column,
        dy: b.row - a.row
    };
}

function scanSpans(e0, e1, ymin, ymax, scanLine) {
    var y0 = Math.max(ymin, Math.floor(e1.y0));
    var y1 = Math.min(ymax, Math.ceil(e1.y1));

    // sort edges by x-coordinate
    if ((e0.x0 === e1.x0 && e0.y0 === e1.y0) ?
            (e0.x0 + e1.dy / e0.dy * e0.dx < e1.x1) :
            (e0.x1 - e1.dy / e0.dy * e0.dx < e1.x0)) {
        var t = e0; e0 = e1; e1 = t;
    }

    // scan lines!
    var m0 = e0.dx / e0.dy;
    var m1 = e1.dx / e1.dy;
    var d0 = e0.dx > 0; // use y + 1 to compute x0
    var d1 = e1.dx < 0; // use y + 1 to compute x1
    for (var y = y0; y < y1; y++) {
        var x0 = m0 * Math.max(0, Math.min(e0.dy, y + d0 - e0.y0)) + e0.x0;
        var x1 = m1 * Math.max(0, Math.min(e1.dy, y + d1 - e1.y0)) + e1.x0;
        scanLine(Math.floor(x1), Math.ceil(x0), y);
    }
}

function scanTriangle(a, b, c, ymin, ymax, scanLine) {
    var ab = edge(a, b),
        bc = edge(b, c),
        ca = edge(c, a);

    var t;

    // sort edges by y-length
    if (ab.dy > bc.dy) { t = ab; ab = bc; bc = t; }
    if (ab.dy > ca.dy) { t = ab; ab = ca; ca = t; }
    if (bc.dy > ca.dy) { t = bc; bc = ca; ca = t; }

    // scan span! scan span!
    if (ab.dy) scanSpans(ca, ab, ymin, ymax, scanLine);
    if (bc.dy) scanSpans(ca, bc, ymin, ymax, scanLine);
}

TileCoord.cover = function(z, bounds, actualZ) {
    var tiles = 1 << z;
    var t = {};

    function scanLine(x0, x1, y) {
        var x, wx, coord;
        if (y >= 0 && y <= tiles) {
            for (x = x0; x < x1; x++) {
                wx = (x % tiles + tiles) % tiles;
                coord = new TileCoord(actualZ, wx, y, Math.floor(x / tiles));
                t[coord.id] = coord;
            }
        }
    }

    // Divide the screen up in two triangles and scan each of them:
    // +---/
    // | / |
    // /---+
    scanTriangle(bounds[0], bounds[1], bounds[2], 0, tiles, scanLine);
    scanTriangle(bounds[2], bounds[3], bounds[0], 0, tiles, scanLine);

    return Object.keys(t).map(function(id) {
        return t[id];
    });
};

},{"../geo/coordinate":314,"assert":9,"whoots-js":1018}],346:[function(require,module,exports){
'use strict';

var Evented = require('../util/evented');
var util = require('../util/util');
var loadTileJSON = require('./load_tilejson');
var normalizeURL = require('../util/mapbox').normalizeTileURL;

module.exports = VectorTileSource;

function VectorTileSource(id, options, dispatcher) {
    this.id = id;
    this.dispatcher = dispatcher;
    util.extend(this, util.pick(options, ['url', 'scheme', 'tileSize']));
    this._options = util.extend({ type: 'vector' }, options);

    if (this.tileSize !== 512) {
        throw new Error('vector tile sources must have a tileSize of 512');
    }

    loadTileJSON(options, function (err, tileJSON) {
        if (err) {
            this.fire('error', err);
            return;
        }
        util.extend(this, tileJSON);
        this.fire('load');
    }.bind(this));
}

VectorTileSource.prototype = util.inherit(Evented, {
    minzoom: 0,
    maxzoom: 22,
    scheme: 'xyz',
    tileSize: 512,
    reparseOverscaled: true,
    isTileClipped: true,

    onAdd: function(map) {
        this.map = map;
    },

    serialize: function() {
        return util.extend({}, this._options);
    },

    loadTile: function(tile, callback) {
        var overscaling = tile.coord.z > this.maxzoom ? Math.pow(2, tile.coord.z - this.maxzoom) : 1;
        var params = {
            url: normalizeURL(tile.coord.url(this.tiles, this.maxzoom, this.scheme), this.url),
            uid: tile.uid,
            coord: tile.coord,
            zoom: tile.coord.z,
            tileSize: this.tileSize * overscaling,
            source: this.id,
            overscaling: overscaling,
            angle: this.map.transform.angle,
            pitch: this.map.transform.pitch,
            showCollisionBoxes: this.map.showCollisionBoxes
        };

        if (tile.workerID) {
            if (tile.state === 'loading') {
                // schedule tile reloading after it has been loaded
                tile.reloadCallback = callback;
            } else {
                params.rawTileData = tile.rawTileData;
                this.dispatcher.send('reload tile', params, done.bind(this), tile.workerID);
            }
        } else {
            tile.workerID = this.dispatcher.send('load tile', params, done.bind(this));
        }

        function done(err, data) {
            if (tile.aborted)
                return;

            if (err) {
                return callback(err);
            }

            tile.loadVectorData(data, this.map.style);

            if (tile.redoWhenDone) {
                tile.redoWhenDone = false;
                tile.redoPlacement(this);
            }

            callback(null);

            if (tile.reloadCallback) {
                this.loadTile(tile, tile.reloadCallback);
                tile.reloadCallback = null;
            }
        }
    },

    abortTile: function(tile) {
        this.dispatcher.send('abort tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
    },

    unloadTile: function(tile) {
        tile.unloadVectorData(this.map.painter);
        this.dispatcher.send('remove tile', { uid: tile.uid, source: this.id }, null, tile.workerID);
    }
});

},{"../util/evented":410,"../util/mapbox":415,"../util/util":418,"./load_tilejson":338}],347:[function(require,module,exports){
'use strict';
var ajax = require('../util/ajax');
var vt = require('vector-tile');
var Protobuf = require('pbf');
var WorkerTile = require('./worker_tile');

module.exports = VectorTileWorkerSource;

/**
 * The {@link WorkerSource} implementation that supports {@link VectorTileSource}.
 * This class is designed to be easily reused to support custom source types
 * for data formats that can be parsed/converted into an in-memory VectorTile
 * representation.  To do so, create it with
 * `new VectorTileWorkerSource(actor, styleLayers, customLoadVectorDataFunction)`.
 *
 * @class VectorTileWorkerSource
 * @private
 * @param {Function} [loadVectorData] Optional method for custom loading of a VectorTile object based on parameters passed from the main-thread Source.  See {@link VectorTileWorkerSource#loadTile}.  The default implementation simply loads the pbf at `params.url`.
 */
function VectorTileWorkerSource (actor, styleLayers, loadVectorData) {
    this.actor = actor;
    this.styleLayers = styleLayers;

    if (loadVectorData) { this.loadVectorData = loadVectorData; }

    this.loading = {};
    this.loaded = {};
}

VectorTileWorkerSource.prototype = {
    /**
     * Implements {@link WorkerSource#loadTile}.  Delegates to {@link VectorTileWorkerSource#loadVectorData} (which by default expects a `params.url` property) for fetching and producing a VectorTile object.
     *
     * @param {object} params
     * @param {string} params.source The id of the source for which we're loading this tile.
     * @param {string} params.uid The UID for this tile.
     * @param {TileCoord} params.coord
     * @param {number} params.zoom
     * @param {number} params.overscaling
     * @param {number} params.angle
     * @param {number} params.pitch
     * @param {boolean} params.showCollisionBoxes
     */
    loadTile: function(params, callback) {
        var source = params.source,
            uid = params.uid;

        if (!this.loading[source])
            this.loading[source] = {};

        var tile = this.loading[source][uid] = new WorkerTile(params);
        tile.abort = this.loadVectorData(params, done.bind(this));

        function done(err, data) {
            delete this.loading[source][uid];

            if (err) return callback(err);
            if (!data) return callback(null, null);

            tile.data = data.tile;
            tile.parse(tile.data, this.styleLayers.getLayerFamilies(), this.actor, data.rawTileData, callback);

            this.loaded[source] = this.loaded[source] || {};
            this.loaded[source][uid] = tile;
        }
    },

    /**
     * Implements {@link WorkerSource#reloadTile}.
     *
     * @param {object} params
     * @param {string} params.source The id of the source for which we're loading this tile.
     * @param {string} params.uid The UID for this tile.
     */
    reloadTile: function(params, callback) {
        var loaded = this.loaded[params.source],
            uid = params.uid;
        if (loaded && loaded[uid]) {
            var tile = loaded[uid];
            tile.parse(tile.data, this.styleLayers.getLayerFamilies(), this.actor, params.rawTileData, callback);
        }
    },

    /**
     * Implements {@link WorkerSource#abortTile}.
     *
     * @param {object} params
     * @param {string} params.source The id of the source for which we're loading this tile.
     * @param {string} params.uid The UID for this tile.
     */
    abortTile: function(params) {
        var loading = this.loading[params.source],
            uid = params.uid;
        if (loading && loading[uid] && loading[uid].abort) {
            loading[uid].abort();
            delete loading[uid];
        }
    },

    /**
     * Implements {@link WorkerSource#removeTile}.
     *
     * @param {object} params
     * @param {string} params.source The id of the source for which we're loading this tile.
     * @param {string} params.uid The UID for this tile.
     */
    removeTile: function(params) {
        var loaded = this.loaded[params.source],
            uid = params.uid;
        if (loaded && loaded[uid]) {
            delete loaded[uid];
        }
    },

    /**
     * @param {object} params
     * @param {string} params.url The URL of the tile PBF to load.
     */
    loadVectorData: function (params, callback) {
        var xhr = ajax.getArrayBuffer(params.url, done.bind(this));
        return function abort () { xhr.abort(); };
        function done(err, data) {
            if (err) { return callback(err); }
            var tile =  new vt.VectorTile(new Protobuf(new Uint8Array(data)));
            callback(err, { tile: tile, rawTileData: data });
        }
    },

    redoPlacement: function(params, callback) {
        var loaded = this.loaded[params.source],
            loading = this.loading[params.source],
            uid = params.uid;

        if (loaded && loaded[uid]) {
            var tile = loaded[uid];
            var result = tile.redoPlacement(params.angle, params.pitch, params.showCollisionBoxes);

            if (result.result) {
                callback(null, result.result, result.transferables);
            }

        } else if (loading && loading[uid]) {
            loading[uid].angle = params.angle;
        }
    }
};

},{"../util/ajax":401,"./worker_tile":350,"pbf":465,"vector-tile":1002}],348:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var TileCoord = require('./tile_coord');
var LngLat = require('../geo/lng_lat');
var Point = require('point-geometry');
var Evented = require('../util/evented');
var ajax = require('../util/ajax');
var EXTENT = require('../data/bucket').EXTENT;
var RasterBoundsArray = require('../render/draw_raster').RasterBoundsArray;
var Buffer = require('../data/buffer');
var VertexArrayObject = require('../render/vertex_array_object');

module.exports = VideoSource;

/**
 * A data source containing video.
 * (See the [Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/#sources-video) for detailed documentation of options.)
 * @interface VideoSource
 * @example
 * // add to map
 * map.addSource('some id', {
 *    type: 'video',
 *    url: [
 *        'https://www.mapbox.com/videos/baltimore-smoke.mp4',
 *        'https://www.mapbox.com/videos/baltimore-smoke.webm'
 *    ],
 *    coordinates: [
 *        [-76.54, 39.18],
 *        [-76.52, 39.18],
 *        [-76.52, 39.17],
 *        [-76.54, 39.17]
 *    ]
 * });
 *
 * // update
 * var mySource = map.getSource('some id');
 * mySource.setCoordinates([
 *     [-76.54335737228394, 39.18579907229748],
 *     [-76.52803659439087, 39.1838364847587],
 *     [-76.5295386314392, 39.17683392507606],
 *     [-76.54520273208618, 39.17876344106642]
 * ]);
 *
 * map.removeSource('some id');  // remove
 */
function VideoSource(id, options) {
    this.id = id;
    this.urls = options.urls;
    this.coordinates = options.coordinates;

    ajax.getVideo(options.urls, function(err, video) {
        if (err) return this.fire('error', {error: err});

        this.video = video;
        this.video.loop = true;

        var loopID;

        // start repainting when video starts playing
        this.video.addEventListener('playing', function() {
            loopID = this.map.style.animationLoop.set(Infinity);
            this.map._rerender();
        }.bind(this));

        // stop repainting when video stops
        this.video.addEventListener('pause', function() {
            this.map.style.animationLoop.cancel(loopID);
        }.bind(this));

        if (this.map) {
            this.video.play();
            this.setCoordinates(options.coordinates);
        }

        this.fire('load');
    }.bind(this));
}

VideoSource.prototype = util.inherit(Evented, /** @lends VideoSource.prototype */{
    minzoom: 0,
    maxzoom: 22,
    tileSize: 512,
    roundZoom: true,

    /**
     * Returns the HTML `video` element.
     *
     * @returns {HTMLVideoElement} The HTML `video` element.
     */
    getVideo: function() {
        return this.video;
    },

    onAdd: function(map) {
        if (this.map) return;
        this.map = map;
        if (this.video) {
            this.video.play();
            this.setCoordinates(this.coordinates);
        }
    },

    /**
     * Sets the video's coordinates and re-renders the map.
     *
     * @param {Array<Array<number>>} coordinates Four geographical coordinates,
     *   represented as arrays of longitude and latitude numbers, which define the corners of the video.
     *   The coordinates start at the top left corner of the video and proceed in clockwise order.
     *   They do not have to represent a rectangle.
     * @returns {VideoSource} this
     */
    setCoordinates: function(coordinates) {
        this.coordinates = coordinates;

        // Calculate which mercator tile is suitable for rendering the video in
        // and create a buffer with the corner coordinates. These coordinates
        // may be outside the tile, because raster tiles aren't clipped when rendering.

        var map = this.map;
        var cornerZ0Coords = coordinates.map(function(coord) {
            return map.transform.locationCoordinate(LngLat.convert(coord)).zoomTo(0);
        });

        var centerCoord = this.centerCoord = util.getCoordinatesCenter(cornerZ0Coords);
        centerCoord.column = Math.round(centerCoord.column);
        centerCoord.row = Math.round(centerCoord.row);

        this.minzoom = this.maxzoom = centerCoord.zoom;
        this._coord = new TileCoord(centerCoord.zoom, centerCoord.column, centerCoord.row);
        this._tileCoords = cornerZ0Coords.map(function(coord) {
            var zoomedCoord = coord.zoomTo(centerCoord.zoom);
            return new Point(
                Math.round((zoomedCoord.column - centerCoord.column) * EXTENT),
                Math.round((zoomedCoord.row - centerCoord.row) * EXTENT));
        });

        this.fire('change');
        return this;
    },

    _setTile: function (tile) {
        this._prepared = false;
        this.tile = tile;
        var maxInt16 = 32767;
        var array = new RasterBoundsArray();
        array.emplaceBack(this._tileCoords[0].x, this._tileCoords[0].y, 0, 0);
        array.emplaceBack(this._tileCoords[1].x, this._tileCoords[1].y, maxInt16, 0);
        array.emplaceBack(this._tileCoords[3].x, this._tileCoords[3].y, 0, maxInt16);
        array.emplaceBack(this._tileCoords[2].x, this._tileCoords[2].y, maxInt16, maxInt16);

        this.tile.buckets = {};

        this.tile.boundsBuffer = new Buffer(array.serialize(), RasterBoundsArray.serialize(), Buffer.BufferType.VERTEX);
        this.tile.boundsVAO = new VertexArrayObject();
        this.tile.state = 'loaded';
    },

    prepare: function() {
        if (this.video.readyState < 2) return; // not enough data for current position
        if (!this.tile) return;

        var gl = this.map.painter.gl;
        if (!this._prepared) {
            this._prepared = true;
            this.tile.texture = gl.createTexture();
            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
            gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
        } else {
            gl.bindTexture(gl.TEXTURE_2D, this.tile.texture);
            gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
        }

        this._currentTime = this.video.currentTime;
    },

    loadTile: function(tile, callback) {
        // We have a single tile -- whoose coordinates are this._coord -- that
        // covers the video frame we want to render.  If that's the one being
        // requested, set it up with the image; otherwise, mark the tile as
        // `errored` to indicate that we have no data for it.
        if (this._coord && this._coord.toString() === tile.coord.toString()) {
            this._setTile(tile);
            callback(null);
        } else {
            tile.state = 'errored';
            callback(null);
        }
    },

    serialize: function() {
        return {
            type: 'video',
            urls: this.urls,
            coordinates: this.coordinates
        };
    }
});

},{"../data/bucket":305,"../data/buffer":310,"../geo/lng_lat":315,"../render/draw_raster":327,"../render/vertex_array_object":333,"../util/ajax":401,"../util/evented":410,"../util/util":418,"./tile_coord":345,"point-geometry":919}],349:[function(require,module,exports){
'use strict';

var Actor = require('../util/actor');
var StyleLayer = require('../style/style_layer');
var util = require('../util/util');

var VectorTileWorkerSource = require('./vector_tile_worker_source');
var GeoJSONWorkerSource = require('./geojson_worker_source');

module.exports = function createWorker(self) {
    return new Worker(self);
};

function Worker(self) {
    this.self = self;
    this.actor = new Actor(self, this);

    // simple accessor object for passing to WorkerSources
    var styleLayers = {
        getLayers: function () { return this.layers; }.bind(this),
        getLayerFamilies: function () { return this.layerFamilies; }.bind(this)
    };

    this.workerSources = {
        vector: new VectorTileWorkerSource(this.actor, styleLayers),
        geojson: new GeoJSONWorkerSource(this.actor, styleLayers)
    };

    this.self.registerWorkerSource = function (name, WorkerSource) {
        if (this.workerSources[name]) {
            throw new Error('Worker source with name "' + name + '" already registered.');
        }
        this.workerSources[name] = new WorkerSource(this.actor, styleLayers);
    }.bind(this);
}

util.extend(Worker.prototype, {
    'set layers': function(layers) {
        this.layers = {};
        var that = this;

        // Filter layers and create an id -> layer map
        var childLayerIndicies = [];
        for (var i = 0; i < layers.length; i++) {
            var layer = layers[i];
            if (layer.type === 'fill' || layer.type === 'line' || layer.type === 'circle' || layer.type === 'symbol') {
                if (layer.ref) {
                    childLayerIndicies.push(i);
                } else {
                    setLayer(layer);
                }
            }
        }

        // Create an instance of StyleLayer per layer
        for (var j = 0; j < childLayerIndicies.length; j++) {
            setLayer(layers[childLayerIndicies[j]]);
        }

        function setLayer(serializedLayer) {
            var styleLayer = StyleLayer.create(
                serializedLayer,
                serializedLayer.ref && that.layers[serializedLayer.ref]
            );
            styleLayer.updatePaintTransitions({}, {transition: false});
            that.layers[styleLayer.id] = styleLayer;
        }

        this.layerFamilies = createLayerFamilies(this.layers);
    },

    'update layers': function(layers) {
        var that = this;
        var id;
        var layer;

        // Update ref parents
        for (id in layers) {
            layer = layers[id];
            if (layer.ref) updateLayer(layer);
        }

        // Update ref children
        for (id in layers) {
            layer = layers[id];
            if (!layer.ref) updateLayer(layer);
        }

        function updateLayer(layer) {
            var refLayer = that.layers[layer.ref];
            if (that.layers[layer.id]) {
                that.layers[layer.id].set(layer, refLayer);
            } else {
                that.layers[layer.id] = StyleLayer.create(layer, refLayer);
            }
            that.layers[layer.id].updatePaintTransitions({}, {transition: false});
        }

        this.layerFamilies = createLayerFamilies(this.layers);
    },

    'load tile': function(params, callback) {
        var type = params.type || 'vector';
        this.workerSources[type].loadTile(params, callback);
    },

    'reload tile': function(params, callback) {
        var type = params.type || 'vector';
        this.workerSources[type].reloadTile(params, callback);
    },

    'abort tile': function(params) {
        var type = params.type || 'vector';
        this.workerSources[type].abortTile(params);
    },

    'remove tile': function(params) {
        var type = params.type || 'vector';
        this.workerSources[type].removeTile(params);
    },

    'redo placement': function(params, callback) {
        var type = params.type || 'vector';
        this.workerSources[type].redoPlacement(params, callback);
    },

    /**
     * Load a {@link WorkerSource} script at params.url.  The script is run
     * (using importScripts) with `registerWorkerSource` in scope, which is a
     * function taking `(name, workerSourceObject)`.
     *  @private
     */
    'load worker source': function(params, callback) {
        try {
            this.self.importScripts(params.url);
            callback();
        } catch (e) {
            callback(e);
        }
    }
});

function createLayerFamilies(layers) {
    var families = {};

    for (var layerId in layers) {
        var layer = layers[layerId];
        var parentLayerId = layer.ref || layer.id;
        var parentLayer = layers[parentLayerId];

        if (parentLayer.layout && parentLayer.layout.visibility === 'none') continue;

        families[parentLayerId] = families[parentLayerId] || [];
        if (layerId === parentLayerId) {
            families[parentLayerId].unshift(layer);
        } else {
            families[parentLayerId].push(layer);
        }
    }

    return families;
}

},{"../style/style_layer":357,"../util/actor":400,"../util/util":418,"./geojson_worker_source":335,"./vector_tile_worker_source":347}],350:[function(require,module,exports){
'use strict';

var FeatureIndex = require('../data/feature_index');
var CollisionTile = require('../symbol/collision_tile');
var Bucket = require('../data/bucket');
var CollisionBoxArray = require('../symbol/collision_box');
var DictionaryCoder = require('../util/dictionary_coder');
var util = require('../util/util');
var SymbolInstancesArray = require('../symbol/symbol_instances');
var SymbolQuadsArray = require('../symbol/symbol_quads');

module.exports = WorkerTile;

function WorkerTile(params) {
    this.coord = params.coord;
    this.uid = params.uid;
    this.zoom = params.zoom;
    this.tileSize = params.tileSize;
    this.source = params.source;
    this.overscaling = params.overscaling;
    this.angle = params.angle;
    this.pitch = params.pitch;
    this.showCollisionBoxes = params.showCollisionBoxes;
}

WorkerTile.prototype.parse = function(data, layerFamilies, actor, rawTileData, callback) {

    this.status = 'parsing';
    this.data = data;

    this.collisionBoxArray = new CollisionBoxArray();
    this.symbolInstancesArray = new SymbolInstancesArray();
    this.symbolQuadsArray = new SymbolQuadsArray();
    var collisionTile = new CollisionTile(this.angle, this.pitch, this.collisionBoxArray);
    var featureIndex = new FeatureIndex(this.coord, this.overscaling, collisionTile, data.layers);
    var sourceLayerCoder = new DictionaryCoder(data.layers ? Object.keys(data.layers).sort() : ['_geojsonTileLayer']);

    var tile = this;
    var bucketsById = {};
    var bucketsBySourceLayer = {};
    var i;
    var layer;
    var sourceLayerId;
    var bucket;

    // Map non-ref layers to buckets.
    var bucketIndex = 0;
    for (var layerId in layerFamilies) {
        layer = layerFamilies[layerId][0];

        if (layer.source !== this.source) continue;
        if (layer.ref) continue;
        if (layer.minzoom && this.zoom < layer.minzoom) continue;
        if (layer.maxzoom && this.zoom >= layer.maxzoom) continue;
        if (layer.layout && layer.layout.visibility === 'none') continue;
        if (data.layers && !data.layers[layer.sourceLayer]) continue;

        bucket = Bucket.create({
            layer: layer,
            index: bucketIndex++,
            childLayers: layerFamilies[layerId],
            zoom: this.zoom,
            overscaling: this.overscaling,
            showCollisionBoxes: this.showCollisionBoxes,
            collisionBoxArray: this.collisionBoxArray,
            symbolQuadsArray: this.symbolQuadsArray,
            symbolInstancesArray: this.symbolInstancesArray,
            sourceLayerIndex: sourceLayerCoder.encode(layer.sourceLayer || '_geojsonTileLayer')
        });
        bucket.createFilter();

        bucketsById[layer.id] = bucket;

        if (data.layers) { // vectortile
            sourceLayerId = layer.sourceLayer;
            bucketsBySourceLayer[sourceLayerId] = bucketsBySourceLayer[sourceLayerId] || {};
            bucketsBySourceLayer[sourceLayerId][layer.id] = bucket;
        }
    }

    // read each layer, and sort its features into buckets
    if (data.layers) { // vectortile
        for (sourceLayerId in bucketsBySourceLayer) {
            if (layer.version === 1) {
                util.warnOnce(
                    'Vector tile source "' + this.source + '" layer "' +
                    sourceLayerId + '" does not use vector tile spec v2 ' +
                    'and therefore may have some rendering errors.'
                );
            }
            layer = data.layers[sourceLayerId];
            if (layer) {
                sortLayerIntoBuckets(layer, bucketsBySourceLayer[sourceLayerId]);
            }
        }
    } else { // geojson
        sortLayerIntoBuckets(data, bucketsById);
    }

    function sortLayerIntoBuckets(layer, buckets) {
        for (var i = 0; i < layer.length; i++) {
            var feature = layer.feature(i);
            feature.index = i;
            for (var id in buckets) {
                if (buckets[id].filter(feature))
                    buckets[id].features.push(feature);
            }
        }
    }

    var buckets = [],
        symbolBuckets = this.symbolBuckets = [],
        otherBuckets = [];

    featureIndex.bucketLayerIDs = {};

    for (var id in bucketsById) {
        bucket = bucketsById[id];
        if (bucket.features.length === 0) continue;

        featureIndex.bucketLayerIDs[bucket.index] = bucket.childLayers.map(getLayerId);

        buckets.push(bucket);

        if (bucket.type === 'symbol')
            symbolBuckets.push(bucket);
        else
            otherBuckets.push(bucket);
    }

    var icons = {};
    var stacks = {};
    var deps = 0;


    if (symbolBuckets.length > 0) {

        // Get dependencies for symbol buckets
        for (i = symbolBuckets.length - 1; i >= 0; i--) {
            symbolBuckets[i].updateIcons(icons);
            symbolBuckets[i].updateFont(stacks);
        }

        for (var fontName in stacks) {
            stacks[fontName] = Object.keys(stacks[fontName]).map(Number);
        }
        icons = Object.keys(icons);

        actor.send('get glyphs', {uid: this.uid, stacks: stacks}, function(err, newStacks) {
            stacks = newStacks;
            gotDependency(err);
        });

        if (icons.length) {
            actor.send('get icons', {icons: icons}, function(err, newIcons) {
                icons = newIcons;
                gotDependency(err);
            });
        } else {
            gotDependency();
        }
    }

    // immediately parse non-symbol buckets (they have no dependencies)
    for (i = otherBuckets.length - 1; i >= 0; i--) {
        parseBucket(this, otherBuckets[i]);
    }

    if (symbolBuckets.length === 0)
        return done();

    function gotDependency(err) {
        if (err) return callback(err);
        deps++;
        if (deps === 2) {
            // all symbol bucket dependencies fetched; parse them in proper order
            for (var i = symbolBuckets.length - 1; i >= 0; i--) {
                parseBucket(tile, symbolBuckets[i]);
            }
            done();
        }
    }

    function parseBucket(tile, bucket) {
        bucket.populateArrays(collisionTile, stacks, icons);


        if (bucket.type !== 'symbol') {
            for (var i = 0; i < bucket.features.length; i++) {
                var feature = bucket.features[i];
                featureIndex.insert(feature, feature.index, bucket.sourceLayerIndex, bucket.index);
            }
        }

        bucket.features = null;
    }

    function done() {
        tile.status = 'done';

        if (tile.redoPlacementAfterDone) {
            tile.redoPlacement(tile.angle, tile.pitch, null);
            tile.redoPlacementAfterDone = false;
        }

        var featureIndex_ = featureIndex.serialize();
        var collisionTile_ = collisionTile.serialize();
        var collisionBoxArray = tile.collisionBoxArray.serialize();
        var symbolInstancesArray = tile.symbolInstancesArray.serialize();
        var symbolQuadsArray = tile.symbolQuadsArray.serialize();
        var transferables = [rawTileData].concat(featureIndex_.transferables).concat(collisionTile_.transferables);
        var nonEmptyBuckets = buckets.filter(isBucketNonEmpty);

        callback(null, {
            buckets: nonEmptyBuckets.map(serializeBucket),
            featureIndex: featureIndex_.data,
            collisionTile: collisionTile_.data,
            collisionBoxArray: collisionBoxArray,
            symbolInstancesArray: symbolInstancesArray,
            symbolQuadsArray: symbolQuadsArray,
            rawTileData: rawTileData
        }, getTransferables(nonEmptyBuckets).concat(transferables));
    }
};

WorkerTile.prototype.redoPlacement = function(angle, pitch, showCollisionBoxes) {
    if (this.status !== 'done') {
        this.redoPlacementAfterDone = true;
        this.angle = angle;
        return {};
    }

    var collisionTile = new CollisionTile(angle, pitch, this.collisionBoxArray);

    var buckets = this.symbolBuckets;

    for (var i = buckets.length - 1; i >= 0; i--) {
        buckets[i].placeFeatures(collisionTile, showCollisionBoxes);
    }

    var collisionTile_ = collisionTile.serialize();
    var nonEmptyBuckets = buckets.filter(isBucketNonEmpty);

    return {
        result: {
            buckets: nonEmptyBuckets.map(serializeBucket),
            collisionTile: collisionTile_.data
        },
        transferables: getTransferables(nonEmptyBuckets).concat(collisionTile_.transferables)
    };
};

function isBucketNonEmpty(bucket) {
    return !bucket.isEmpty();
}

function serializeBucket(bucket) {
    return bucket.serialize();
}

function getTransferables(buckets) {
    var transferables = [];
    for (var i in buckets) {
        buckets[i].getTransferables(transferables);
    }
    return transferables;
}

function getLayerId(layer) {
    return layer.id;
}

},{"../data/bucket":305,"../data/feature_index":312,"../symbol/collision_box":370,"../symbol/collision_tile":372,"../symbol/symbol_instances":381,"../symbol/symbol_quads":382,"../util/dictionary_coder":408,"../util/util":418}],351:[function(require,module,exports){
'use strict';

module.exports = AnimationLoop;

function AnimationLoop() {
    this.n = 0;
    this.times = [];
}

// Are all animations done?
AnimationLoop.prototype.stopped = function() {
    this.times = this.times.filter(function(t) {
        return t.time >= (new Date()).getTime();
    });
    return !this.times.length;
};

// Add a new animation that will run t milliseconds
// Returns an id that can be used to cancel it layer
AnimationLoop.prototype.set = function(t) {
    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
    return this.n++;
};

// Cancel an animation
AnimationLoop.prototype.cancel = function(n) {
    this.times = this.times.filter(function(t) {
        return t.id !== n;
    });
};

},{}],352:[function(require,module,exports){
'use strict';

var Evented = require('../util/evented');
var ajax = require('../util/ajax');
var browser = require('../util/browser');
var normalizeURL = require('../util/mapbox').normalizeSpriteURL;

module.exports = ImageSprite;

function ImageSprite(base) {
    this.base = base;
    this.retina = browser.devicePixelRatio > 1;

    var format = this.retina ? '@2x' : '';

    ajax.getJSON(normalizeURL(base, format, '.json'), function(err, data) {
        if (err) {
            this.fire('error', {error: err});
            return;
        }

        this.data = data;
        if (this.img) this.fire('load');
    }.bind(this));

    ajax.getImage(normalizeURL(base, format, '.png'), function(err, img) {
        if (err) {
            this.fire('error', {error: err});
            return;
        }

        // premultiply the sprite
        var data = img.getData();
        var newdata = img.data = new Uint8Array(data.length);
        for (var i = 0; i < data.length; i += 4) {
            var alpha = data[i + 3] / 255;
            newdata[i + 0] = data[i + 0] * alpha;
            newdata[i + 1] = data[i + 1] * alpha;
            newdata[i + 2] = data[i + 2] * alpha;
            newdata[i + 3] = data[i + 3];
        }

        this.img = img;
        if (this.data) this.fire('load');
    }.bind(this));
}

ImageSprite.prototype = Object.create(Evented);

ImageSprite.prototype.toJSON = function() {
    return this.base;
};

ImageSprite.prototype.loaded = function() {
    return !!(this.data && this.img);
};

ImageSprite.prototype.resize = function(/*gl*/) {
    if (browser.devicePixelRatio > 1 !== this.retina) {
        var newSprite = new ImageSprite(this.base);
        newSprite.on('load', function() {
            this.img = newSprite.img;
            this.data = newSprite.data;
            this.retina = newSprite.retina;
        }.bind(this));
    }
};

function SpritePosition() {}
SpritePosition.prototype = { x: 0, y: 0, width: 0, height: 0, pixelRatio: 1, sdf: false };

ImageSprite.prototype.getSpritePosition = function(name) {
    if (!this.loaded()) return new SpritePosition();

    var pos = this.data && this.data[name];
    if (pos && this.img) return pos;

    return new SpritePosition();
};

},{"../util/ajax":401,"../util/browser":402,"../util/evented":410,"../util/mapbox":415}],353:[function(require,module,exports){
'use strict';

var parseColorString = require('csscolorparser').parseCSSColor;
var util = require('../util/util');
var StyleFunction = require('./style_function');

var cache = {};

module.exports = function parseColor(input) {

    if (StyleFunction.isFunctionDefinition(input)) {

        return util.extend({}, input, {
            stops: input.stops.map(function(stop) {
                return [stop[0], parseColor(stop[1])];
            })
        });

    } else if (typeof input === 'string') {

        if (!cache[input]) {
            var rgba = parseColorString(input);
            if (!rgba) { throw new Error('Invalid color ' + input); }

            // GL expects all components to be in the range [0, 1] and to be
            // multipled by the alpha value.
            cache[input] = [
                rgba[0] / 255 * rgba[3],
                rgba[1] / 255 * rgba[3],
                rgba[2] / 255 * rgba[3],
                rgba[3]
            ];
        }

        return cache[input];

    } else {
        throw new Error('Invalid color ' + input);
    }
};

},{"../util/util":418,"./style_function":356,"csscolorparser":80}],354:[function(require,module,exports){
'use strict';

var Evented = require('../util/evented');
var StyleLayer = require('./style_layer');
var ImageSprite = require('./image_sprite');
var GlyphSource = require('../symbol/glyph_source');
var SpriteAtlas = require('../symbol/sprite_atlas');
var LineAtlas = require('../render/line_atlas');
var util = require('../util/util');
var ajax = require('../util/ajax');
var normalizeURL = require('../util/mapbox').normalizeStyleURL;
var browser = require('../util/browser');
var Dispatcher = require('../util/dispatcher');
var AnimationLoop = require('./animation_loop');
var validateStyle = require('./validate_style');
var Source = require('../source/source');
var QueryFeatures = require('../source/query_features');
var SourceCache = require('../source/source_cache');
var styleSpec = require('./style_spec');
var StyleFunction = require('./style_function');

module.exports = Style;

function Style(stylesheet, animationLoop, workerCount) {
    this.animationLoop = animationLoop || new AnimationLoop();
    this.dispatcher = new Dispatcher(workerCount || 1, this);
    this.spriteAtlas = new SpriteAtlas(1024, 1024);
    this.lineAtlas = new LineAtlas(256, 512);

    this._layers = {};
    this._order  = [];
    this._groups = [];
    this.sources = {};
    this.zoomHistory = {};

    util.bindAll([
        '_forwardSourceEvent',
        '_forwardTileEvent',
        '_forwardLayerEvent',
        '_redoPlacement'
    ], this);

    this._resetUpdates();

    var stylesheetLoaded = function(err, stylesheet) {
        if (err) {
            this.fire('error', {error: err});
            return;
        }

        if (validateStyle.emitErrors(this, validateStyle(stylesheet))) return;

        this._loaded = true;
        this.stylesheet = stylesheet;

        this.updateClasses();

        var sources = stylesheet.sources;
        for (var id in sources) {
            this.addSource(id, sources[id]);
        }

        if (stylesheet.sprite) {
            this.sprite = new ImageSprite(stylesheet.sprite);
            this.sprite.on('load', this.fire.bind(this, 'change'));
        }

        this.glyphSource = new GlyphSource(stylesheet.glyphs);
        this._resolve();
        this.fire('load');
    }.bind(this);

    if (typeof stylesheet === 'string') {
        ajax.getJSON(normalizeURL(stylesheet), stylesheetLoaded);
    } else {
        browser.frame(stylesheetLoaded.bind(this, null, stylesheet));
    }

    this.on('source.load', function(event) {
        var source = event.source;
        if (source && source.vectorLayerIds) {
            for (var layerId in this._layers) {
                var layer = this._layers[layerId];
                if (layer.source === source.id) {
                    this._validateLayer(layer);
                }
            }
        }
    });
}

Style.prototype = util.inherit(Evented, {
    _loaded: false,

    _validateLayer: function(layer) {
        var source = this.sources[layer.source];

        if (!layer.sourceLayer) return;
        if (!source) return;
        if (!source.vectorLayerIds) return;

        if (source.vectorLayerIds.indexOf(layer.sourceLayer) === -1) {
            this.fire('error', {
                error: new Error(
                    'Source layer "' + layer.sourceLayer + '" ' +
                    'does not exist on source "' + source.id + '" ' +
                    'as specified by style layer "' + layer.id + '"'
                )
            });
        }
    },

    loaded: function() {
        if (!this._loaded)
            return false;

        if (Object.keys(this._updates.sources).length)
            return false;

        for (var id in this.sources)
            if (!this.sources[id].loaded())
                return false;

        if (this.sprite && !this.sprite.loaded())
            return false;

        return true;
    },

    _resolve: function() {
        var layer, layerJSON;

        this._layers = {};
        this._order  = this.stylesheet.layers.map(function(layer) {
            return layer.id;
        });

        // resolve all layers WITHOUT a ref
        for (var i = 0; i < this.stylesheet.layers.length; i++) {
            layerJSON = this.stylesheet.layers[i];
            if (layerJSON.ref) continue;
            layer = StyleLayer.create(layerJSON);
            this._layers[layer.id] = layer;
            layer.on('error', this._forwardLayerEvent);
        }

        // resolve all layers WITH a ref
        for (var j = 0; j < this.stylesheet.layers.length; j++) {
            layerJSON = this.stylesheet.layers[j];
            if (!layerJSON.ref) continue;
            var refLayer = this.getLayer(layerJSON.ref);
            layer = StyleLayer.create(layerJSON, refLayer);
            this._layers[layer.id] = layer;
            layer.on('error', this._forwardLayerEvent);
        }

        this._groupLayers();
        this._updateWorkerLayers();
    },

    _groupLayers: function() {
        var group;

        this._groups = [];

        // Split into groups of consecutive top-level layers with the same source.
        for (var i = 0; i < this._order.length; ++i) {
            var layer = this._layers[this._order[i]];

            if (!group || layer.source !== group.source) {
                group = [];
                group.source = layer.source;
                this._groups.push(group);
            }

            group.push(layer);
        }
    },

    _updateWorkerLayers: function(ids) {
        this.dispatcher.broadcast(ids ? 'update layers' : 'set layers', this._serializeLayers(ids));
    },

    _serializeLayers: function(ids) {
        ids = ids || this._order;
        var serialized = [];
        var options = {includeRefProperties: true};
        for (var i = 0; i < ids.length; i++) {
            serialized.push(this._layers[ids[i]].serialize(options));
        }
        return serialized;
    },

    _applyClasses: function(classes, options) {
        if (!this._loaded) return;

        classes = classes || [];
        options = options || {transition: true};
        var transition = this.stylesheet.transition || {};

        var layers = this._updates.allPaintProps ? this._layers : this._updates.paintProps;

        for (var id in layers) {
            var layer = this._layers[id];
            var props = this._updates.paintProps[id];

            if (this._updates.allPaintProps || props.all) {
                layer.updatePaintTransitions(classes, options, transition, this.animationLoop);
            } else {
                for (var paintName in props) {
                    this._layers[id].updatePaintTransition(paintName, classes, options, transition, this.animationLoop);
                }
            }
        }
    },

    _recalculate: function(z) {
        for (var sourceId in this.sources)
            this.sources[sourceId].used = false;

        this._updateZoomHistory(z);

        this.rasterFadeDuration = 300;
        for (var layerId in this._layers) {
            var layer = this._layers[layerId];

            layer.recalculate(z, this.zoomHistory);
            if (!layer.isHidden(z) && layer.source) {
                this.sources[layer.source].used = true;
            }
        }

        var maxZoomTransitionDuration = 300;
        if (Math.floor(this.z) !== Math.floor(z)) {
            this.animationLoop.set(maxZoomTransitionDuration);
        }

        this.z = z;
        this.fire('zoom');
    },

    _updateZoomHistory: function(z) {

        var zh = this.zoomHistory;

        if (zh.lastIntegerZoom === undefined) {
            // first time
            zh.lastIntegerZoom = Math.floor(z);
            zh.lastIntegerZoomTime = 0;
            zh.lastZoom = z;
        }

        // check whether an integer zoom level as passed since the last frame
        // and if yes, record it with the time. Used for transitioning patterns.
        if (Math.floor(zh.lastZoom) < Math.floor(z)) {
            zh.lastIntegerZoom = Math.floor(z);
            zh.lastIntegerZoomTime = Date.now();

        } else if (Math.floor(zh.lastZoom) > Math.floor(z)) {
            zh.lastIntegerZoom = Math.floor(z + 1);
            zh.lastIntegerZoomTime = Date.now();
        }

        zh.lastZoom = z;
    },

    _checkLoaded: function () {
        if (!this._loaded) {
            throw new Error('Style is not done loading');
        }
    },

    /**
     * Apply queued style updates in a batch
     * @private
     */
    update: function(classes, options) {
        if (!this._updates.changed) return this;

        if (this._updates.allLayers) {
            this._groupLayers();
            this._updateWorkerLayers();
        } else {
            var updatedIds = Object.keys(this._updates.layers);
            if (updatedIds.length) {
                this._updateWorkerLayers(updatedIds);
            }
        }

        var updatedSourceIds = Object.keys(this._updates.sources);
        var i;
        for (i = 0; i < updatedSourceIds.length; i++) {
            this._reloadSource(updatedSourceIds[i]);
        }

        for (i = 0; i < this._updates.events.length; i++) {
            var args = this._updates.events[i];
            this.fire(args[0], args[1]);
        }

        this._applyClasses(classes, options);

        if (this._updates.changed) {
            this.fire('change');
        }

        this._resetUpdates();

        return this;
    },

    _resetUpdates: function() {
        this._updates = {
            events: [],
            layers: {},
            sources: {},
            paintProps: {}
        };
    },

    addSource: function(id, source) {
        this._checkLoaded();
        if (this.sources[id] !== undefined) {
            throw new Error('There is already a source with this ID');
        }
        if (!source.type) {
            throw new Error('The type property must be defined, but the only the following properties were given: ' + Object.keys(source) + '.');
        }
        var builtIns = ['vector', 'raster', 'geojson', 'video', 'image'];
        var shouldValidate = builtIns.indexOf(source.type) >= 0;
        if (shouldValidate && this._handleErrors(validateStyle.source, 'sources.' + id, source)) return this;

        source = new SourceCache(id, source, this.dispatcher);
        this.sources[id] = source;
        source.style = this;
        source
            .on('load', this._forwardSourceEvent)
            .on('error', this._forwardSourceEvent)
            .on('change', this._forwardSourceEvent)
            .on('tile.add', this._forwardTileEvent)
            .on('tile.load', this._forwardTileEvent)
            .on('tile.error', this._forwardTileEvent)
            .on('tile.remove', this._forwardTileEvent)
            .on('tile.stats', this._forwardTileEvent);

        this._updates.events.push(['source.add', {source: source}]);
        this._updates.changed = true;

        return this;
    },

    /**
     * Remove a source from this stylesheet, given its id.
     * @param {string} id id of the source to remove
     * @returns {Style} this style
     * @throws {Error} if no source is found with the given ID
     * @private
     */
    removeSource: function(id) {
        this._checkLoaded();

        if (this.sources[id] === undefined) {
            throw new Error('There is no source with this ID');
        }
        var source = this.sources[id];
        delete this.sources[id];
        delete this._updates.sources[id];
        source
            .off('load', this._forwardSourceEvent)
            .off('error', this._forwardSourceEvent)
            .off('change', this._forwardSourceEvent)
            .off('tile.add', this._forwardTileEvent)
            .off('tile.load', this._forwardTileEvent)
            .off('tile.error', this._forwardTileEvent)
            .off('tile.remove', this._forwardTileEvent)
            .off('tile.stats', this._forwardTileEvent);

        this._updates.events.push(['source.remove', {source: source}]);
        this._updates.changed = true;

        return this;
    },

    /**
     * Get a source by id.
     * @param {string} id id of the desired source
     * @returns {Object} source
     * @private
     */
    getSource: function(id) {
        return this.sources[id] && this.sources[id].getSource();
    },

    /**
     * Add a layer to the map style. The layer will be inserted before the layer with
     * ID `before`, or appended if `before` is omitted.
     * @param {StyleLayer|Object} layer
     * @param {string=} before  ID of an existing layer to insert before
     * @fires layer.add
     * @returns {Style} `this`
     * @private
     */
    addLayer: function(layer, before) {
        this._checkLoaded();

        if (!(layer instanceof StyleLayer)) {
            // this layer is not in the style.layers array, so we pass an impossible array index
            if (this._handleErrors(validateStyle.layer,
                    'layers.' + layer.id, layer, false, {arrayIndex: -1})) return this;

            var refLayer = layer.ref && this.getLayer(layer.ref);
            layer = StyleLayer.create(layer, refLayer);
        }
        this._validateLayer(layer);

        layer.on('error', this._forwardLayerEvent);

        this._layers[layer.id] = layer;
        this._order.splice(before ? this._order.indexOf(before) : Infinity, 0, layer.id);

        this._updates.allLayers = true;
        if (layer.source) {
            this._updates.sources[layer.source] = true;
        }
        this._updates.events.push(['layer.add', {layer: layer}]);

        return this.updateClasses(layer.id);
    },

    /**
     * Remove a layer from this stylesheet, given its id.
     * @param {string} id id of the layer to remove
     * @returns {Style} this style
     * @throws {Error} if no layer is found with the given ID
     * @private
     */
    removeLayer: function(id) {
        this._checkLoaded();

        var layer = this._layers[id];
        if (layer === undefined) {
            throw new Error('There is no layer with this ID');
        }
        for (var i in this._layers) {
            if (this._layers[i].ref === id) {
                this.removeLayer(i);
            }
        }

        layer.off('error', this._forwardLayerEvent);

        delete this._layers[id];
        delete this._updates.layers[id];
        delete this._updates.paintProps[id];
        this._order.splice(this._order.indexOf(id), 1);

        this._updates.allLayers = true;
        this._updates.events.push(['layer.remove', {layer: layer}]);
        this._updates.changed = true;

        return this;
    },

    /**
     * Return the style layer object with the given `id`.
     *
     * @param {string} id - id of the desired layer
     * @returns {?Object} a layer, if one with the given `id` exists
     * @private
     */
    getLayer: function(id) {
        return this._layers[id];
    },

    /**
     * If a layer has a `ref` property that makes it derive some values
     * from another layer, return that referent layer. Otherwise,
     * returns the layer itself.
     * @param {string} id the layer's id
     * @returns {Layer} the referent layer or the layer itself
     * @private
     */
    getReferentLayer: function(id) {
        var layer = this.getLayer(id);
        if (layer.ref) {
            layer = this.getLayer(layer.ref);
        }
        return layer;
    },

    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
        this._checkLoaded();

        var layer = this.getReferentLayer(layerId);

        if (layer.minzoom === minzoom && layer.maxzoom === maxzoom) return this;

        if (minzoom != null) {
            layer.minzoom = minzoom;
        }
        if (maxzoom != null) {
            layer.maxzoom = maxzoom;
        }
        return this._updateLayer(layer);
    },

    setFilter: function(layerId, filter) {
        this._checkLoaded();

        var layer = this.getReferentLayer(layerId);

        if (filter !== null && this._handleErrors(validateStyle.filter, 'layers.' + layer.id + '.filter', filter)) return this;

        if (util.deepEqual(layer.filter, filter)) return this;
        layer.filter = util.clone(filter);

        return this._updateLayer(layer);
    },

    /**
     * Get a layer's filter object
     * @param {string} layer the layer to inspect
     * @returns {*} the layer's filter, if any
     * @private
     */
    getFilter: function(layer) {
        return this.getReferentLayer(layer).filter;
    },

    setLayoutProperty: function(layerId, name, value) {
        this._checkLoaded();

        var layer = this.getReferentLayer(layerId);

        if (util.deepEqual(layer.getLayoutProperty(name), value)) return this;

        layer.setLayoutProperty(name, value);
        return this._updateLayer(layer);
    },

    /**
     * Get a layout property's value from a given layer
     * @param {string} layer the layer to inspect
     * @param {string} name the name of the layout property
     * @returns {*} the property value
     * @private
     */
    getLayoutProperty: function(layer, name) {
        return this.getReferentLayer(layer).getLayoutProperty(name);
    },

    setPaintProperty: function(layerId, name, value, klass) {
        this._checkLoaded();

        var layer = this.getLayer(layerId);

        if (util.deepEqual(layer.getPaintProperty(name, klass), value)) return this;

        var wasFeatureConstant = layer.isPaintValueFeatureConstant(name);
        layer.setPaintProperty(name, value, klass);

        var isFeatureConstant = !(
            value &&
            StyleFunction.isFunctionDefinition(value) &&
            value.property !== '$zoom' &&
            value.property !== undefined
        );

        if (!isFeatureConstant || !wasFeatureConstant) {
            this._updates.layers[layerId] = true;
            if (layer.source) {
                this._updates.sources[layer.source] = true;
            }
        }

        return this.updateClasses(layerId, name);
    },

    getPaintProperty: function(layer, name, klass) {
        return this.getLayer(layer).getPaintProperty(name, klass);
    },

    updateClasses: function (layerId, paintName) {
        this._updates.changed = true;
        if (!layerId) {
            this._updates.allPaintProps = true;
        } else {
            var props = this._updates.paintProps;
            if (!props[layerId]) props[layerId] = {};
            props[layerId][paintName || 'all'] = true;
        }
        return this;
    },

    serialize: function() {
        return util.filterObject({
            version: this.stylesheet.version,
            name: this.stylesheet.name,
            metadata: this.stylesheet.metadata,
            center: this.stylesheet.center,
            zoom: this.stylesheet.zoom,
            bearing: this.stylesheet.bearing,
            pitch: this.stylesheet.pitch,
            sprite: this.stylesheet.sprite,
            glyphs: this.stylesheet.glyphs,
            transition: this.stylesheet.transition,
            sources: util.mapObject(this.sources, function(source) {
                return source.serialize();
            }),
            layers: this._order.map(function(id) {
                return this._layers[id].serialize();
            }, this)
        }, function(value) { return value !== undefined; });
    },

    _updateLayer: function (layer) {
        this._updates.layers[layer.id] = true;
        if (layer.source) {
            this._updates.sources[layer.source] = true;
        }
        this._updates.changed = true;
        return this;
    },

    _flattenRenderedFeatures: function(sourceResults) {
        var features = [];
        for (var l = this._order.length - 1; l >= 0; l--) {
            var layerID = this._order[l];
            for (var s = 0; s < sourceResults.length; s++) {
                var layerFeatures = sourceResults[s][layerID];
                if (layerFeatures) {
                    for (var f = 0; f < layerFeatures.length; f++) {
                        features.push(layerFeatures[f]);
                    }
                }
            }
        }
        return features;
    },

    queryRenderedFeatures: function(queryGeometry, params, zoom, bearing) {
        if (params && params.filter) {
            this._handleErrors(validateStyle.filter, 'queryRenderedFeatures.filter', params.filter, true);
        }

        var includedSources = {};
        if (params && params.layers) {
            for (var i = 0; i < params.layers.length; i++) {
                var layerId = params.layers[i];
                includedSources[this._layers[layerId].source] = true;
            }
        }

        var sourceResults = [];
        for (var id in this.sources) {
            if (params.layers && !includedSources[id]) continue;
            var source = this.sources[id];
            var results = QueryFeatures.rendered(source, this._layers, queryGeometry, params, zoom, bearing);
            sourceResults.push(results);
        }
        return this._flattenRenderedFeatures(sourceResults);
    },

    querySourceFeatures: function(sourceID, params) {
        if (params && params.filter) {
            this._handleErrors(validateStyle.filter, 'querySourceFeatures.filter', params.filter, true);
        }
        var source = this.sources[sourceID];
        return source ? QueryFeatures.source(source, params) : [];
    },

    addSourceType: function (name, SourceType, callback) {
        if (Source.getType(name)) {
            return callback(new Error('A source type called "' + name + '" already exists.'));
        }

        Source.setType(name, SourceType);

        if (!SourceType.workerSourceURL) {
            return callback(null, null);
        }

        this.dispatcher.broadcast('load worker source', {
            name: name,
            url: SourceType.workerSourceURL
        }, callback);
    },

    _handleErrors: function(validate, key, value, throws, props) {
        var action = throws ? validateStyle.throwErrors : validateStyle.emitErrors;
        var result = validate.call(validateStyle, util.extend({
            key: key,
            style: this.serialize(),
            value: value,
            styleSpec: styleSpec
        }, props));
        return action.call(validateStyle, this, result);
    },

    _remove: function() {
        this.dispatcher.remove();
    },

    _reloadSource: function(id) {
        this.sources[id].reload();
    },

    _updateSources: function(transform) {
        for (var id in this.sources) {
            this.sources[id].update(transform);
        }
    },

    _redoPlacement: function() {
        for (var id in this.sources) {
            if (this.sources[id].redoPlacement) this.sources[id].redoPlacement();
        }
    },

    _forwardSourceEvent: function(e) {
        this.fire('source.' + e.type, util.extend({source: e.target.getSource()}, e));
    },

    _forwardTileEvent: function(e) {
        this.fire(e.type, util.extend({source: e.target}, e));
    },

    _forwardLayerEvent: function(e) {
        this.fire('layer.' + e.type, util.extend({layer: {id: e.target.id}}, e));
    },

    // Callbacks from web workers

    'get sprite json': function(params, callback) {
        var sprite = this.sprite;
        if (sprite.loaded()) {
            callback(null, { sprite: sprite.data, retina: sprite.retina });
        } else {
            sprite.on('load', function() {
                callback(null, { sprite: sprite.data, retina: sprite.retina });
            });
        }
    },

    'get icons': function(params, callback) {
        var sprite = this.sprite;
        var spriteAtlas = this.spriteAtlas;
        if (sprite.loaded()) {
            spriteAtlas.setSprite(sprite);
            spriteAtlas.addIcons(params.icons, callback);
        } else {
            sprite.on('load', function() {
                spriteAtlas.setSprite(sprite);
                spriteAtlas.addIcons(params.icons, callback);
            });
        }
    },

    'get glyphs': function(params, callback) {
        var stacks = params.stacks,
            remaining = Object.keys(stacks).length,
            allGlyphs = {};

        for (var fontName in stacks) {
            this.glyphSource.getSimpleGlyphs(fontName, stacks[fontName], params.uid, done);
        }

        function done(err, glyphs, fontName) {
            if (err) console.error(err);

            allGlyphs[fontName] = glyphs;
            remaining--;

            if (remaining === 0)
                callback(null, allGlyphs);
        }
    }
});


},{"../render/line_atlas":330,"../source/query_features":340,"../source/source":342,"../source/source_cache":343,"../symbol/glyph_source":375,"../symbol/sprite_atlas":380,"../util/ajax":401,"../util/browser":402,"../util/dispatcher":409,"../util/evented":410,"../util/mapbox":415,"../util/util":418,"./animation_loop":351,"./image_sprite":352,"./style_function":356,"./style_layer":357,"./style_spec":364,"./validate_style":366}],355:[function(require,module,exports){
'use strict';

var MapboxGLFunction = require('./style_function');
var parseColor = require('./parse_color');
var util = require('../util/util');

module.exports = StyleDeclaration;

function StyleDeclaration(reference, value) {
    this.value = util.clone(value);
    this.isFunction = MapboxGLFunction.isFunctionDefinition(value);

    // immutable representation of value. used for comparison
    this.json = JSON.stringify(this.value);

    var parsedValue = reference.type === 'color' && this.value ? parseColor(this.value) : value;
    this.calculate = MapboxGLFunction[reference.function || 'piecewise-constant'](parsedValue);
    this.isFeatureConstant = this.calculate.isFeatureConstant;
    this.isZoomConstant = this.calculate.isZoomConstant;

    if (reference.function === 'piecewise-constant' && reference.transition) {
        this.calculate = transitioned(this.calculate);
    }

    if (!this.isFeatureConstant && !this.isZoomConstant) {
        this.stopZoomLevels = [];
        var interpolationAmountStops = [];
        var stops = this.value.stops;
        for (var i = 0; i < this.value.stops.length; i++) {
            var zoom = stops[i][0].zoom;
            if (this.stopZoomLevels.indexOf(zoom) < 0) {
                this.stopZoomLevels.push(zoom);
                interpolationAmountStops.push([zoom, interpolationAmountStops.length]);
            }
        }

        this.calculateInterpolationT = MapboxGLFunction.interpolated({
            stops: interpolationAmountStops,
            base: value.base
        });
    }
}

// This function is used to smoothly transition between discrete values, such
// as images and dasharrays.
function transitioned(calculate) {
    return function(globalProperties, featureProperties) {
        var z = globalProperties.zoom;
        var zh = globalProperties.zoomHistory;
        var duration = globalProperties.duration;

        var fraction = z % 1;
        var t = Math.min((Date.now() - zh.lastIntegerZoomTime) / duration, 1);
        var fromScale = 1;
        var toScale = 1;
        var mix, from, to;

        if (z > zh.lastIntegerZoom) {
            mix = fraction + (1 - fraction) * t;
            fromScale *= 2;
            from = calculate({zoom: z - 1}, featureProperties);
            to = calculate({zoom: z}, featureProperties);
        } else {
            mix = 1 - (1 - t) * fraction;
            to = calculate({zoom: z}, featureProperties);
            from = calculate({zoom: z + 1}, featureProperties);
            fromScale /= 2;
        }

        if (from === undefined || to === undefined) {
            return undefined;
        } else {
            return {
                from: from,
                fromScale: fromScale,
                to: to,
                toScale: toScale,
                t: mix
            };
        }
    };
}

},{"../util/util":418,"./parse_color":353,"./style_function":356}],356:[function(require,module,exports){
'use strict';

var MapboxGLFunction = require('mapbox-gl-function');

exports.interpolated = function(parameters) {
    var inner = MapboxGLFunction.interpolated(parameters);
    var outer = function(globalProperties, featureProperties) {
        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
    };
    outer.isFeatureConstant = inner.isFeatureConstant;
    outer.isZoomConstant = inner.isZoomConstant;
    return outer;
};

exports['piecewise-constant'] = function(parameters) {
    var inner = MapboxGLFunction['piecewise-constant'](parameters);
    var outer = function(globalProperties, featureProperties) {
        return inner(globalProperties && globalProperties.zoom, featureProperties || {});
    };
    outer.isFeatureConstant = inner.isFeatureConstant;
    outer.isZoomConstant = inner.isZoomConstant;
    return outer;
};

exports.isFunctionDefinition = MapboxGLFunction.isFunctionDefinition;

},{"mapbox-gl-function":278}],357:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var StyleTransition = require('./style_transition');
var StyleDeclaration = require('./style_declaration');
var styleSpec = require('./style_spec');
var validateStyle = require('./validate_style');
var parseColor = require('./parse_color');
var Evented = require('../util/evented');

module.exports = StyleLayer;

var TRANSITION_SUFFIX = '-transition';

StyleLayer.create = function(layer, refLayer) {
    var Classes = {
        background: require('./style_layer/background_style_layer'),
        circle: require('./style_layer/circle_style_layer'),
        fill: require('./style_layer/fill_style_layer'),
        line: require('./style_layer/line_style_layer'),
        raster: require('./style_layer/raster_style_layer'),
        symbol: require('./style_layer/symbol_style_layer')
    };
    return new Classes[(refLayer || layer).type](layer, refLayer);
};

function StyleLayer(layer, refLayer) {
    this.set(layer, refLayer);
}

StyleLayer.prototype = util.inherit(Evented, {

    set: function(layer, refLayer) {
        this.id = layer.id;
        this.ref = layer.ref;
        this.metadata = layer.metadata;
        this.type = (refLayer || layer).type;
        this.source = (refLayer || layer).source;
        this.sourceLayer = (refLayer || layer)['source-layer'];
        this.minzoom = (refLayer || layer).minzoom;
        this.maxzoom = (refLayer || layer).maxzoom;
        this.filter = (refLayer || layer).filter;

        this.paint = {};
        this.layout = {};

        this._paintSpecifications = styleSpec['paint_' + this.type];
        this._layoutSpecifications = styleSpec['layout_' + this.type];

        this._paintTransitions = {}; // {[propertyName]: StyleTransition}
        this._paintTransitionOptions = {}; // {[className]: {[propertyName]: { duration:Number, delay:Number }}}
        this._paintDeclarations = {}; // {[className]: {[propertyName]: StyleDeclaration}}
        this._layoutDeclarations = {}; // {[propertyName]: StyleDeclaration}
        this._layoutFunctions = {}; // {[propertyName]: Boolean}

        var paintName, layoutName;

        // Resolve paint declarations
        for (var key in layer) {
            var match = key.match(/^paint(?:\.(.*))?$/);
            if (match) {
                var klass = match[1] || '';
                for (paintName in layer[key]) {
                    this.setPaintProperty(paintName, layer[key][paintName], klass);
                }
            }
        }

        // Resolve layout declarations
        if (this.ref) {
            this._layoutDeclarations = refLayer._layoutDeclarations;
        } else {
            for (layoutName in layer.layout) {
                this.setLayoutProperty(layoutName, layer.layout[layoutName]);
            }
        }

        // set initial layout/paint values
        for (paintName in this._paintSpecifications) {
            this.paint[paintName] = this.getPaintValue(paintName);
        }
        for (layoutName in this._layoutSpecifications) {
            this._updateLayoutValue(layoutName);
        }
    },

    setLayoutProperty: function(name, value) {

        if (value == null) {
            delete this._layoutDeclarations[name];
        } else {
            var key = 'layers.' + this.id + '.layout.' + name;
            if (this._handleErrors(validateStyle.layoutProperty, key, name, value)) return;
            this._layoutDeclarations[name] = new StyleDeclaration(this._layoutSpecifications[name], value);
        }
        this._updateLayoutValue(name);
    },

    getLayoutProperty: function(name) {
        return (
            this._layoutDeclarations[name] &&
            this._layoutDeclarations[name].value
        );
    },

    getLayoutValue: function(name, globalProperties, featureProperties) {
        var specification = this._layoutSpecifications[name];
        var declaration = this._layoutDeclarations[name];

        if (declaration) {
            return declaration.calculate(globalProperties, featureProperties);
        } else {
            return specification.default;
        }
    },

    setPaintProperty: function(name, value, klass) {
        var validateStyleKey = 'layers.' + this.id + (klass ? '["paint.' + klass + '"].' : '.paint.') + name;

        if (util.endsWith(name, TRANSITION_SUFFIX)) {
            if (!this._paintTransitionOptions[klass || '']) {
                this._paintTransitionOptions[klass || ''] = {};
            }
            if (value === null || value === undefined) {
                delete this._paintTransitionOptions[klass || ''][name];
            } else {
                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
                this._paintTransitionOptions[klass || ''][name] = value;
            }
        } else {
            if (!this._paintDeclarations[klass || '']) {
                this._paintDeclarations[klass || ''] = {};
            }
            if (value === null || value === undefined) {
                delete this._paintDeclarations[klass || ''][name];
            } else {
                if (this._handleErrors(validateStyle.paintProperty, validateStyleKey, name, value)) return;
                this._paintDeclarations[klass || ''][name] = new StyleDeclaration(this._paintSpecifications[name], value);
            }
        }
    },

    getPaintProperty: function(name, klass) {
        klass = klass || '';
        if (util.endsWith(name, TRANSITION_SUFFIX)) {
            return (
                this._paintTransitionOptions[klass] &&
                this._paintTransitionOptions[klass][name]
            );
        } else {
            return (
                this._paintDeclarations[klass] &&
                this._paintDeclarations[klass][name] &&
                this._paintDeclarations[klass][name].value
            );
        }
    },

    getPaintValue: function(name, globalProperties, featureProperties) {
        var specification = this._paintSpecifications[name];
        var transition = this._paintTransitions[name];

        if (transition) {
            return transition.calculate(globalProperties, featureProperties);
        } else if (specification.type === 'color' && specification.default) {
            return parseColor(specification.default);
        } else {
            return specification.default;
        }
    },

    getPaintValueStopZoomLevels: function(name) {
        var transition = this._paintTransitions[name];
        if (transition) {
            return transition.declaration.stopZoomLevels;
        } else {
            return [];
        }
    },

    getPaintInterpolationT: function(name, zoom) {
        var transition = this._paintTransitions[name];
        return transition.declaration.calculateInterpolationT({ zoom: zoom });
    },

    isPaintValueFeatureConstant: function(name) {
        var transition = this._paintTransitions[name];

        if (transition) {
            return transition.declaration.isFeatureConstant;
        } else {
            return true;
        }
    },

    isLayoutValueFeatureConstant: function(name) {
        var declaration = this._layoutDeclarations[name];

        if (declaration) {
            return declaration.isFeatureConstant;
        } else {
            return true;
        }
    },

    isPaintValueZoomConstant: function(name) {
        var transition = this._paintTransitions[name];

        if (transition) {
            return transition.declaration.isZoomConstant;
        } else {
            return true;
        }
    },


    isHidden: function(zoom) {
        if (this.minzoom && zoom < this.minzoom) return true;
        if (this.maxzoom && zoom >= this.maxzoom) return true;
        if (this.layout['visibility'] === 'none') return true;
        if (this.paint[this.type + '-opacity'] === 0) return true;
        return false;
    },

    updatePaintTransitions: function(classes, options, globalOptions, animationLoop) {
        var declarations = util.extend({}, this._paintDeclarations['']);
        for (var i = 0; i < classes.length; i++) {
            util.extend(declarations, this._paintDeclarations[classes[i]]);
        }

        var name;
        for (name in declarations) { // apply new declarations
            this._applyPaintDeclaration(name, declarations[name], options, globalOptions, animationLoop);
        }
        for (name in this._paintTransitions) {
            if (!(name in declarations)) // apply removed declarations
                this._applyPaintDeclaration(name, null, options, globalOptions, animationLoop);
        }
    },

    updatePaintTransition: function(name, classes, options, globalOptions, animationLoop) {
        var declaration = this._paintDeclarations[''][name];
        for (var i = 0; i < classes.length; i++) {
            var classPaintDeclarations = this._paintDeclarations[classes[i]];
            if (classPaintDeclarations && classPaintDeclarations[name]) {
                declaration = classPaintDeclarations[name];
            }
        }
        this._applyPaintDeclaration(name, declaration, options, globalOptions, animationLoop);
    },

    // update all zoom-dependent layout/paint values
    recalculate: function(zoom, zoomHistory) {
        for (var paintName in this._paintTransitions) {
            this.paint[paintName] = this.getPaintValue(paintName, {zoom: zoom, zoomHistory: zoomHistory});
        }
        for (var layoutName in this._layoutFunctions) {
            this.layout[layoutName] = this.getLayoutValue(layoutName, {zoom: zoom, zoomHistory: zoomHistory});
        }
    },

    serialize: function(options) {
        var output = {
            'id': this.id,
            'ref': this.ref,
            'metadata': this.metadata,
            'minzoom': this.minzoom,
            'maxzoom': this.maxzoom
        };

        for (var klass in this._paintDeclarations) {
            var key = klass === '' ? 'paint' : 'paint.' + klass;
            output[key] = util.mapObject(this._paintDeclarations[klass], getDeclarationValue);
        }

        if (!this.ref || (options && options.includeRefProperties)) {
            util.extend(output, {
                'type': this.type,
                'source': this.source,
                'source-layer': this.sourceLayer,
                'filter': this.filter,
                'layout': util.mapObject(this._layoutDeclarations, getDeclarationValue)
            });
        }

        return util.filterObject(output, function(value, key) {
            return value !== undefined && !(key === 'layout' && !Object.keys(value).length);
        });
    },

    // set paint transition based on a given paint declaration
    _applyPaintDeclaration: function (name, declaration, options, globalOptions, animationLoop) {
        var oldTransition = options.transition ? this._paintTransitions[name] : undefined;
        var spec = this._paintSpecifications[name];

        if (declaration === null || declaration === undefined) {
            declaration = new StyleDeclaration(spec, spec.default);
        }

        if (oldTransition && oldTransition.declaration.json === declaration.json) return;

        var transitionOptions = util.extend({
            duration: 300,
            delay: 0
        }, globalOptions, this.getPaintProperty(name + TRANSITION_SUFFIX));

        var newTransition = this._paintTransitions[name] =
            new StyleTransition(spec, declaration, oldTransition, transitionOptions);

        if (!newTransition.instant()) {
            newTransition.loopID = animationLoop.set(newTransition.endTime - Date.now());
        }
        if (oldTransition) {
            animationLoop.cancel(oldTransition.loopID);
        }
    },

    // update layout value if it's constant, or mark it as zoom-dependent
    _updateLayoutValue: function(name) {
        var declaration = this._layoutDeclarations[name];

        if (declaration && declaration.isFunction) {
            this._layoutFunctions[name] = true;
        } else {
            delete this._layoutFunctions[name];
            this.layout[name] = this.getLayoutValue(name);
        }
    },

    _handleErrors: function(validate, key, name, value) {
        return validateStyle.emitErrors(this, validate.call(validateStyle, {
            key: key,
            layerType: this.type,
            objectKey: name,
            value: value,
            styleSpec: styleSpec,
            // Workaround for https://github.com/mapbox/mapbox-gl-js/issues/2407
            style: {glyphs: true, sprite: true}
        }));
    }
});

function getDeclarationValue(declaration) {
    return declaration.value;
}

},{"../util/evented":410,"../util/util":418,"./parse_color":353,"./style_declaration":355,"./style_layer/background_style_layer":358,"./style_layer/circle_style_layer":359,"./style_layer/fill_style_layer":360,"./style_layer/line_style_layer":361,"./style_layer/raster_style_layer":362,"./style_layer/symbol_style_layer":363,"./style_spec":364,"./style_transition":365,"./validate_style":366}],358:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var StyleLayer = require('../style_layer');

function BackgroundStyleLayer() {
    StyleLayer.apply(this, arguments);
}

module.exports = BackgroundStyleLayer;

BackgroundStyleLayer.prototype = util.inherit(StyleLayer, {});

},{"../../util/util":418,"../style_layer":357}],359:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var StyleLayer = require('../style_layer');

function CircleStyleLayer() {
    StyleLayer.apply(this, arguments);
}

module.exports = CircleStyleLayer;

CircleStyleLayer.prototype = util.inherit(StyleLayer, {});

},{"../../util/util":418,"../style_layer":357}],360:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var StyleLayer = require('../style_layer');

function FillStyleLayer() {
    StyleLayer.apply(this, arguments);
}

FillStyleLayer.prototype = util.inherit(StyleLayer, {

    getPaintValue: function(name, globalProperties, featureProperties) {
        if (name === 'fill-outline-color' && this.getPaintProperty('fill-outline-color') === undefined) {
            return StyleLayer.prototype.getPaintValue.call(this, 'fill-color', globalProperties, featureProperties);
        } else {
            return StyleLayer.prototype.getPaintValue.call(this, name, globalProperties, featureProperties);
        }
    },

    getPaintValueStopZoomLevels: function(name) {
        if (name === 'fill-outline-color' && this.getPaintProperty('fill-outline-color') === undefined) {
            return StyleLayer.prototype.getPaintValueStopZoomLevels.call(this, 'fill-color');
        } else {
            return StyleLayer.prototype.getPaintValueStopZoomLevels.call(this, arguments);
        }
    },

    getPaintInterpolationT: function(name, zoom) {
        if (name === 'fill-outline-color' && this.getPaintProperty('fill-outline-color') === undefined) {
            return StyleLayer.prototype.getPaintInterpolationT.call(this, 'fill-color', zoom);
        } else {
            return StyleLayer.prototype.getPaintInterpolationT.call(this, name, zoom);
        }
    },

    isPaintValueFeatureConstant: function(name) {
        if (name === 'fill-outline-color' && this.getPaintProperty('fill-outline-color') === undefined) {
            return StyleLayer.prototype.isPaintValueFeatureConstant.call(this, 'fill-color');
        } else {
            return StyleLayer.prototype.isPaintValueFeatureConstant.call(this, name);
        }
    },

    isPaintValueZoomConstant: function(name) {
        if (name === 'fill-outline-color' && this.getPaintProperty('fill-outline-color') === undefined) {
            return StyleLayer.prototype.isPaintValueZoomConstant.call(this, 'fill-color');
        } else {
            return StyleLayer.prototype.isPaintValueZoomConstant.call(this, name);
        }
    }

});

module.exports = FillStyleLayer;

},{"../../util/util":418,"../style_layer":357}],361:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var StyleLayer = require('../style_layer');

function LineStyleLayer() {
    StyleLayer.apply(this, arguments);
}

module.exports = LineStyleLayer;

LineStyleLayer.prototype = util.inherit(StyleLayer, {

    getPaintValue: function(name, globalProperties, featureProperties) {
        var value = StyleLayer.prototype.getPaintValue.apply(this, arguments);

        // If the line is dashed, scale the dash lengths by the line
        // width at the previous round zoom level.
        if (value && name === 'line-dasharray') {
            var flooredZoom = Math.floor(globalProperties.zoom);
            if (this._flooredZoom !== flooredZoom) {
                this._flooredZoom = flooredZoom;
                this._flooredLineWidth = this.getPaintValue('line-width', globalProperties, featureProperties);
            }

            value.fromScale *= this._flooredLineWidth;
            value.toScale *= this._flooredLineWidth;
        }

        return value;
    }
});

},{"../../util/util":418,"../style_layer":357}],362:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var StyleLayer = require('../style_layer');

function RasterStyleLayer() {
    StyleLayer.apply(this, arguments);
}

module.exports = RasterStyleLayer;

RasterStyleLayer.prototype = util.inherit(StyleLayer, {});

},{"../../util/util":418,"../style_layer":357}],363:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var StyleLayer = require('../style_layer');

function SymbolStyleLayer() {
    StyleLayer.apply(this, arguments);
}

module.exports = SymbolStyleLayer;

SymbolStyleLayer.prototype = util.inherit(StyleLayer, {

    isHidden: function() {
        if (StyleLayer.prototype.isHidden.apply(this, arguments)) return true;

        var isTextHidden = this.paint['text-opacity'] === 0 || !this.layout['text-field'];
        var isIconHidden = this.paint['icon-opacity'] === 0 || !this.layout['icon-image'];
        if (isTextHidden && isIconHidden) return true;

        return false;
    },

    getLayoutValue: function(name, globalProperties, featureProperties) {
        if (name === 'text-rotation-alignment' &&
                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
                !this.getLayoutProperty('text-rotation-alignment')) {
            return 'map';
        } else if (name === 'icon-rotation-alignment' &&
                this.getLayoutValue('symbol-placement', globalProperties, featureProperties) === 'line' &&
                !this.getLayoutProperty('icon-rotation-alignment')) {
            return 'map';
        // If unspecified `text-pitch-alignment` inherits `text-rotation-alignment`
        } else if (name === 'text-pitch-alignment' && !this.getLayoutProperty('text-pitch-alignment')) {
            return this.getLayoutValue('text-rotation-alignment');
        } else {
            return StyleLayer.prototype.getLayoutValue.apply(this, arguments);
        }
    }

});

},{"../../util/util":418,"../style_layer":357}],364:[function(require,module,exports){
'use strict';

module.exports = require('mapbox-gl-style-spec/reference/latest.min');

},{"mapbox-gl-style-spec/reference/latest.min":301}],365:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var interpolate = require('../util/interpolate');

module.exports = StyleTransition;

/*
 * Represents a transition between two declarations
 */
function StyleTransition(reference, declaration, oldTransition, value) {

    this.declaration = declaration;
    this.startTime = this.endTime = (new Date()).getTime();

    if (reference.function === 'piecewise-constant' && reference.transition) {
        this.interp = interpZoomTransitioned;
    } else {
        this.interp = interpolate[reference.type];
    }

    this.oldTransition = oldTransition;
    this.duration = value.duration || 0;
    this.delay = value.delay || 0;

    if (!this.instant()) {
        this.endTime = this.startTime + this.duration + this.delay;
        this.ease = util.easeCubicInOut;
    }

    if (oldTransition && oldTransition.endTime <= this.startTime) {
        // Old transition is done running, so we can
        // delete its reference to its old transition.

        delete oldTransition.oldTransition;
    }
}

StyleTransition.prototype.instant = function() {
    return !this.oldTransition || !this.interp || (this.duration === 0 && this.delay === 0);
};

/*
 * Return the value of the transitioning property at zoom level `z` and optional time `t`
 */
StyleTransition.prototype.calculate = function(globalProperties, featureProperties) {
    var value = this.declaration.calculate(
        util.extend({}, globalProperties, {duration: this.duration}),
        featureProperties
    );

    if (this.instant()) return value;

    var t = globalProperties.time || Date.now();

    if (t < this.endTime) {
        var oldValue = this.oldTransition.calculate(
            util.extend({}, globalProperties, {time: this.startTime}),
            featureProperties
        );
        var eased = this.ease((t - this.startTime - this.delay) / this.duration);
        value = this.interp(oldValue, value, eased);
    }

    return value;

};

// This function is used to smoothly transition between discrete values, such
// as images and dasharrays.
function interpZoomTransitioned(from, to, t) {
    if ((from && from.to) === undefined || (to && to.to) === undefined) {
        return undefined;
    } else {
        return {
            from: from.to,
            fromScale: from.toScale,
            to: to.to,
            toScale: to.toScale,
            t: t
        };
    }
}

},{"../util/interpolate":412,"../util/util":418}],366:[function(require,module,exports){
'use strict';

module.exports = require('mapbox-gl-style-spec/lib/validate_style.min');

module.exports.emitErrors = function throwErrors(emitter, errors) {
    if (errors && errors.length) {
        for (var i = 0; i < errors.length; i++) {
            emitter.fire('error', { error: new Error(errors[i].message) });
        }
        return true;
    } else {
        return false;
    }
};

module.exports.throwErrors = function throwErrors(emitter, errors) {
    if (errors) {
        for (var i = 0; i < errors.length; i++) {
            throw new Error(errors[i].message);
        }
    }
};

},{"mapbox-gl-style-spec/lib/validate_style.min":300}],367:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');

module.exports = Anchor;

function Anchor(x, y, angle, segment) {
    this.x = x;
    this.y = y;
    this.angle = angle;

    if (segment !== undefined) {
        this.segment = segment;
    }
}

Anchor.prototype = Object.create(Point.prototype);

Anchor.prototype.clone = function() {
    return new Anchor(this.x, this.y, this.angle, this.segment);
};

},{"point-geometry":919}],368:[function(require,module,exports){
'use strict';

module.exports = checkMaxAngle;

/**
 * Labels placed around really sharp angles aren't readable. Check if any
 * part of the potential label has a combined angle that is too big.
 *
 * @param {Array<Point>} line
 * @param {Anchor} anchor The point on the line around which the label is anchored.
 * @param {number} labelLength The length of the label in geometry units.
 * @param {number} windowSize The check fails if the combined angles within a part of the line that is `windowSize` long is too big.
 * @param {number} maxAngle The maximum combined angle that any window along the label is allowed to have.
 *
 * @returns {boolean} whether the label should be placed
 * @private
 */
function checkMaxAngle(line, anchor, labelLength, windowSize, maxAngle) {

    // horizontal labels always pass
    if (anchor.segment === undefined) return true;

    var p = anchor;
    var index = anchor.segment + 1;
    var anchorDistance = 0;

    // move backwards along the line to the first segment the label appears on
    while (anchorDistance > -labelLength / 2) {
        index--;

        // there isn't enough room for the label after the beginning of the line
        if (index < 0) return false;

        anchorDistance -= line[index].dist(p);
        p = line[index];
    }

    anchorDistance += line[index].dist(line[index + 1]);
    index++;

    // store recent corners and their total angle difference
    var recentCorners = [];
    var recentAngleDelta = 0;

    // move forwards by the length of the label and check angles along the way
    while (anchorDistance < labelLength / 2) {
        var prev = line[index - 1];
        var current = line[index];
        var next = line[index + 1];

        // there isn't enough room for the label before the end of the line
        if (!next) return false;

        var angleDelta = prev.angleTo(current) - current.angleTo(next);
        // restrict angle to -pi..pi range
        angleDelta = Math.abs(((angleDelta + 3 * Math.PI) % (Math.PI * 2)) - Math.PI);

        recentCorners.push({
            distance: anchorDistance,
            angleDelta: angleDelta
        });
        recentAngleDelta += angleDelta;

        // remove corners that are far enough away from the list of recent anchors
        while (anchorDistance - recentCorners[0].distance > windowSize) {
            recentAngleDelta -= recentCorners.shift().angleDelta;
        }

        // the sum of angles within the window area exceeds the maximum allowed value. check fails.
        if (recentAngleDelta > maxAngle) return false;

        index++;
        anchorDistance += current.dist(next);
    }

    // no part of the line had an angle greater than the maximum allowed. check passes.
    return true;
}

},{}],369:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');

module.exports = clipLine;

/**
 * Returns the part of a multiline that intersects with the provided rectangular box.
 *
 * @param {Array<Array<Point>>} lines
 * @param {number} x1 the left edge of the box
 * @param {number} y1 the top edge of the box
 * @param {number} x2 the right edge of the box
 * @param {number} y2 the bottom edge of the box
 * @returns {Array<Array<Point>>} lines
 * @private
 */
function clipLine(lines, x1, y1, x2, y2) {
    var clippedLines = [];

    for (var l = 0; l < lines.length; l++) {
        var line = lines[l];
        var clippedLine;

        for (var i = 0; i < line.length - 1; i++) {
            var p0 = line[i];
            var p1 = line[i + 1];


            if (p0.x < x1 && p1.x < x1) {
                continue;
            } else if (p0.x < x1) {
                p0 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
            } else if (p1.x < x1) {
                p1 = new Point(x1, p0.y + (p1.y - p0.y) * ((x1 - p0.x) / (p1.x - p0.x)))._round();
            }

            if (p0.y < y1 && p1.y < y1) {
                continue;
            } else if (p0.y < y1) {
                p0 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
            } else if (p1.y < y1) {
                p1 = new Point(p0.x + (p1.x - p0.x) * ((y1 - p0.y) / (p1.y - p0.y)), y1)._round();
            }

            if (p0.x >= x2 && p1.x >= x2) {
                continue;
            } else if (p0.x >= x2) {
                p0 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
            } else if (p1.x >= x2) {
                p1 = new Point(x2, p0.y + (p1.y - p0.y) * ((x2 - p0.x) / (p1.x - p0.x)))._round();
            }

            if (p0.y >= y2 && p1.y >= y2) {
                continue;
            } else if (p0.y >= y2) {
                p0 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
            } else if (p1.y >= y2) {
                p1 = new Point(p0.x + (p1.x - p0.x) * ((y2 - p0.y) / (p1.y - p0.y)), y2)._round();
            }

            if (!clippedLine || !p0.equals(clippedLine[clippedLine.length - 1])) {
                clippedLine = [p0];
                clippedLines.push(clippedLine);
            }

            clippedLine.push(p1);
        }
    }

    return clippedLines;
}

},{"point-geometry":919}],370:[function(require,module,exports){
'use strict';

var StructArrayType = require('../util/struct_array');
var util = require('../util/util');
var Point = require('point-geometry');

/**
 * A collision box represents an area of the map that that is covered by a
 * label. CollisionFeature uses one or more of these collision boxes to
 * represent all the area covered by a single label. They are used to
 * prevent collisions between labels.
 *
 * A collision box actually represents a 3d volume. The first two dimensions,
 * x and y, are specified with `anchor` along with `x1`, `y1`, `x2`, `y2`.
 * The third dimension, zoom, is limited by `maxScale` which determines
 * how far in the z dimensions the box extends.
 *
 * As you zoom in on a map, all points on the map get further and further apart
 * but labels stay roughly the same size. Labels cover less real world area on
 * the map at higher zoom levels than they do at lower zoom levels. This is why
 * areas are are represented with an anchor point and offsets from that point
 * instead of just using four absolute points.
 *
 * Line labels are represented by a set of these boxes spaced out along a line.
 * When you zoom in, line labels cover less real world distance along the line
 * than they used to. Collision boxes near the edges that used to cover label
 * no longer do. If a box doesn't cover the label anymore it should be ignored
 * when doing collision checks. `maxScale` is how much you can scale the map
 * before the label isn't within the box anymore.
 * For example
 * lower zoom:
 * https://cloud.githubusercontent.com/assets/1421652/8060094/4d975f76-0e91-11e5-84b1-4edeb30a5875.png
 * slightly higher zoom:
 * https://cloud.githubusercontent.com/assets/1421652/8060061/26ae1c38-0e91-11e5-8c5a-9f380bf29f0a.png
 * In the zoomed in image the two grey boxes on either side don't cover the
 * label anymore. Their maxScale is smaller than the current scale.
 *
 *
 * @class CollisionBoxArray
 * @private
 */

var CollisionBoxArray = module.exports = new StructArrayType({
    members: [
        // the box is centered around the anchor point
        { type: 'Int16', name: 'anchorPointX' },
        { type: 'Int16', name: 'anchorPointY' },

        // distances to the edges from the anchor
        { type: 'Int16', name: 'x1' },
        { type: 'Int16', name: 'y1' },
        { type: 'Int16', name: 'x2' },
        { type: 'Int16', name: 'y2' },

        // the box is only valid for scales < maxScale.
        // The box does not block other boxes at scales >= maxScale;
        { type: 'Float32', name: 'maxScale' },

        // the index of the feature in the original vectortile
        { type: 'Uint32', name: 'featureIndex' },
        // the source layer the feature appears in
        { type: 'Uint16', name: 'sourceLayerIndex' },
        // the bucket the feature appears in
        { type: 'Uint16', name: 'bucketIndex' },

        // rotated and scaled bbox used for indexing
        { type: 'Int16', name: 'bbox0' },
        { type: 'Int16', name: 'bbox1' },
        { type: 'Int16', name: 'bbox2' },
        { type: 'Int16', name: 'bbox3' },

        { type: 'Float32', name: 'placementScale' }
    ]});

util.extendAll(CollisionBoxArray.prototype.StructType.prototype, {
    get anchorPoint() {
        return new Point(this.anchorPointX, this.anchorPointY);
    }
});

},{"../util/struct_array":416,"../util/util":418,"point-geometry":919}],371:[function(require,module,exports){
'use strict';

module.exports = CollisionFeature;

/**
 * A CollisionFeature represents the area of the tile covered by a single label.
 * It is used with CollisionTile to check if the label overlaps with any
 * previous labels. A CollisionFeature is mostly just a set of CollisionBox
 * objects.
 *
 * @class CollisionFeature
 * @param {Array<Point>} line The geometry the label is placed on.
 * @param {Anchor} anchor The point along the line around which the label is anchored.
 * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
 * @param {Array<string>} layerIDs The IDs of the layers that this CollisionFeature is a part of.
 * @param {Object} shaped The text or icon shaping results.
 * @param {number} boxScale A magic number used to convert from glyph metrics units to geometry units.
 * @param {number} padding The amount of padding to add around the label edges.
 * @param {boolean} alignLine Whether the label is aligned with the line or the viewport.
 *
 * @private
 */
function CollisionFeature(collisionBoxArray, line, anchor, featureIndex, sourceLayerIndex, bucketIndex, shaped, boxScale, padding, alignLine, straight) {

    var y1 = shaped.top * boxScale - padding;
    var y2 = shaped.bottom * boxScale + padding;
    var x1 = shaped.left * boxScale - padding;
    var x2 = shaped.right * boxScale + padding;

    this.boxStartIndex = collisionBoxArray.length;

    if (alignLine) {

        var height = y2 - y1;
        var length = x2 - x1;

        if (height > 0) {
            // set minimum box height to avoid very many small labels
            height = Math.max(10 * boxScale, height);

            if (straight) {
                // used for icon labels that are aligned with the line, but don't curve along it
                var vector = line[anchor.segment + 1].sub(line[anchor.segment])._unit()._mult(length);
                var straightLine = [anchor.sub(vector), anchor.add(vector)];
                this._addLineCollisionBoxes(collisionBoxArray, straightLine, anchor, 0, length, height, featureIndex, sourceLayerIndex, bucketIndex);
            } else {
                // used for text labels that curve along a line
                this._addLineCollisionBoxes(collisionBoxArray, line, anchor, anchor.segment, length, height, featureIndex, sourceLayerIndex, bucketIndex);
            }
        }

    } else {
        collisionBoxArray.emplaceBack(anchor.x, anchor.y, x1, y1, x2, y2, Infinity, featureIndex, sourceLayerIndex, bucketIndex,
                0, 0, 0, 0, 0);
    }

    this.boxEndIndex = collisionBoxArray.length;
}

/**
 * Create a set of CollisionBox objects for a line.
 *
 * @param {Array<Point>} line
 * @param {Anchor} anchor
 * @param {number} labelLength The length of the label in geometry units.
 * @param {Anchor} anchor The point along the line around which the label is anchored.
 * @param {VectorTileFeature} feature The VectorTileFeature that this CollisionFeature was created for.
 * @param {number} boxSize The size of the collision boxes that will be created.
 *
 * @private
 */
CollisionFeature.prototype._addLineCollisionBoxes = function(collisionBoxArray, line, anchor, segment, labelLength, boxSize, featureIndex, sourceLayerIndex, bucketIndex) {
    var step = boxSize / 2;
    var nBoxes = Math.floor(labelLength / step);

    // offset the center of the first box by half a box so that the edge of the
    // box is at the edge of the label.
    var firstBoxOffset = -boxSize / 2;

    var bboxes = this.boxes;

    var p = anchor;
    var index = segment + 1;
    var anchorDistance = firstBoxOffset;

    // move backwards along the line to the first segment the label appears on
    do {
        index--;

        // there isn't enough room for the label after the beginning of the line
        // checkMaxAngle should have already caught this
        if (index < 0) return bboxes;

        anchorDistance -= line[index].dist(p);
        p = line[index];
    } while (anchorDistance > -labelLength / 2);

    var segmentLength = line[index].dist(line[index + 1]);

    for (var i = 0; i < nBoxes; i++) {
        // the distance the box will be from the anchor
        var boxDistanceToAnchor = -labelLength / 2 + i * step;

        // the box is not on the current segment. Move to the next segment.
        while (anchorDistance + segmentLength < boxDistanceToAnchor) {
            anchorDistance += segmentLength;
            index++;

            // There isn't enough room before the end of the line.
            if (index + 1 >= line.length) return bboxes;

            segmentLength = line[index].dist(line[index + 1]);
        }

        // the distance the box will be from the beginning of the segment
        var segmentBoxDistance = boxDistanceToAnchor - anchorDistance;

        var p0 = line[index];
        var p1 = line[index + 1];
        var boxAnchorPoint = p1.sub(p0)._unit()._mult(segmentBoxDistance)._add(p0)._round();

        var distanceToInnerEdge = Math.max(Math.abs(boxDistanceToAnchor - firstBoxOffset) - step / 2, 0);
        var maxScale = labelLength / 2 / distanceToInnerEdge;

        collisionBoxArray.emplaceBack(boxAnchorPoint.x, boxAnchorPoint.y,
                -boxSize / 2, -boxSize / 2, boxSize / 2, boxSize / 2, maxScale,
                featureIndex, sourceLayerIndex, bucketIndex,
                0, 0, 0, 0, 0);
    }

    return bboxes;
};

},{}],372:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');
var EXTENT = require('../data/bucket').EXTENT;
var Grid = require('grid-index');

module.exports = CollisionTile;

/**
 * A collision tile used to prevent symbols from overlapping. It keep tracks of
 * where previous symbols have been placed and is used to check if a new
 * symbol overlaps with any previously added symbols.
 *
 * @class CollisionTile
 * @param {number} angle
 * @param {number} pitch
 * @private
 */
function CollisionTile(angle, pitch, collisionBoxArray) {
    if (typeof angle === 'object') {
        var serialized = angle;
        collisionBoxArray = pitch;
        angle = serialized.angle;
        pitch = serialized.pitch;
        this.grid = new Grid(serialized.grid);
        this.ignoredGrid = new Grid(serialized.ignoredGrid);
    } else {
        this.grid = new Grid(EXTENT, 12, 6);
        this.ignoredGrid = new Grid(EXTENT, 12, 0);
    }

    this.angle = angle;
    this.pitch = pitch;

    var sin = Math.sin(angle),
        cos = Math.cos(angle);
    this.rotationMatrix = [cos, -sin, sin, cos];
    this.reverseRotationMatrix = [cos, sin, -sin, cos];

    // Stretch boxes in y direction to account for the map tilt.
    this.yStretch = 1 / Math.cos(pitch / 180 * Math.PI);

    // The amount the map is squished depends on the y position.
    // Sort of account for this by making all boxes a bit bigger.
    this.yStretch = Math.pow(this.yStretch, 1.3);

    this.collisionBoxArray = collisionBoxArray;
    if (collisionBoxArray.length === 0) {
        // the first collisionBoxArray is passed to a CollisionTile

        // tempCollisionBox
        collisionBoxArray.emplaceBack();

        var maxInt16 = 32767;
        //left
        collisionBoxArray.emplaceBack(0, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
                0, 0, 0, 0, 0, 0, 0, 0,
                0);
        // right
        collisionBoxArray.emplaceBack(EXTENT, 0, 0, -maxInt16, 0, maxInt16, maxInt16,
                0, 0, 0, 0, 0, 0, 0, 0,
                0);
        // top
        collisionBoxArray.emplaceBack(0, 0, -maxInt16, 0, maxInt16, 0, maxInt16,
                0, 0, 0, 0, 0, 0, 0, 0,
                0);
        // bottom
        collisionBoxArray.emplaceBack(0, EXTENT, -maxInt16, 0, maxInt16, 0, maxInt16,
                0, 0, 0, 0, 0, 0, 0, 0,
                0);
    }

    this.tempCollisionBox = collisionBoxArray.get(0);
    this.edges = [
        collisionBoxArray.get(1),
        collisionBoxArray.get(2),
        collisionBoxArray.get(3),
        collisionBoxArray.get(4)
    ];
}

CollisionTile.prototype.serialize = function() {
    var data = {
        angle: this.angle,
        pitch: this.pitch,
        grid: this.grid.toArrayBuffer(),
        ignoredGrid: this.ignoredGrid.toArrayBuffer()
    };
    return {
        data: data,
        transferables: [data.grid, data.ignoredGrid]
    };
};

CollisionTile.prototype.minScale = 0.25;
CollisionTile.prototype.maxScale = 2;


/**
 * Find the scale at which the collisionFeature can be shown without
 * overlapping with other features.
 *
 * @param {CollisionFeature} collisionFeature
 * @returns {number} placementScale
 * @private
 */
CollisionTile.prototype.placeCollisionFeature = function(collisionFeature, allowOverlap, avoidEdges) {

    var collisionBoxArray = this.collisionBoxArray;
    var minPlacementScale = this.minScale;
    var rotationMatrix = this.rotationMatrix;
    var yStretch = this.yStretch;

    for (var b = collisionFeature.boxStartIndex; b < collisionFeature.boxEndIndex; b++) {

        var box = collisionBoxArray.get(b);

        var anchorPoint = box.anchorPoint._matMult(rotationMatrix);
        var x = anchorPoint.x;
        var y = anchorPoint.y;

        var x1 = x + box.x1;
        var y1 = y + box.y1 * yStretch;
        var x2 = x + box.x2;
        var y2 = y + box.y2 * yStretch;

        box.bbox0 = x1;
        box.bbox1 = y1;
        box.bbox2 = x2;
        box.bbox3 = y2;

        if (!allowOverlap) {
            var blockingBoxes = this.grid.query(x1, y1, x2, y2);

            for (var i = 0; i < blockingBoxes.length; i++) {
                var blocking = collisionBoxArray.get(blockingBoxes[i]);
                var blockingAnchorPoint = blocking.anchorPoint._matMult(rotationMatrix);

                minPlacementScale = this.getPlacementScale(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking);
                if (minPlacementScale >= this.maxScale) {
                    return minPlacementScale;
                }
            }
        }

        if (avoidEdges) {
            var rotatedCollisionBox;

            if (this.angle) {
                var reverseRotationMatrix = this.reverseRotationMatrix;
                var tl = new Point(box.x1, box.y1).matMult(reverseRotationMatrix);
                var tr = new Point(box.x2, box.y1).matMult(reverseRotationMatrix);
                var bl = new Point(box.x1, box.y2).matMult(reverseRotationMatrix);
                var br = new Point(box.x2, box.y2).matMult(reverseRotationMatrix);

                rotatedCollisionBox = this.tempCollisionBox;
                rotatedCollisionBox.anchorPointX = box.anchorPoint.x;
                rotatedCollisionBox.anchorPointY = box.anchorPoint.y;
                rotatedCollisionBox.x1 = Math.min(tl.x, tr.x, bl.x, br.x);
                rotatedCollisionBox.y1 = Math.min(tl.y, tr.x, bl.x, br.x);
                rotatedCollisionBox.x2 = Math.max(tl.x, tr.x, bl.x, br.x);
                rotatedCollisionBox.y2 = Math.max(tl.y, tr.x, bl.x, br.x);
                rotatedCollisionBox.maxScale = box.maxScale;
            } else {
                rotatedCollisionBox = box;
            }

            for (var k = 0; k < this.edges.length; k++) {
                var edgeBox = this.edges[k];
                minPlacementScale = this.getPlacementScale(minPlacementScale, box.anchorPoint, rotatedCollisionBox, edgeBox.anchorPoint, edgeBox);
                if (minPlacementScale >= this.maxScale) {
                    return minPlacementScale;
                }
            }
        }
    }

    return minPlacementScale;
};

CollisionTile.prototype.queryRenderedSymbols = function(minX, minY, maxX, maxY, scale) {
    var sourceLayerFeatures = {};
    var result = [];

    var collisionBoxArray = this.collisionBoxArray;
    var rotationMatrix = this.rotationMatrix;
    var anchorPoint = new Point(minX, minY)._matMult(rotationMatrix);

    var queryBox = this.tempCollisionBox;
    queryBox.anchorX = anchorPoint.x;
    queryBox.anchorY = anchorPoint.y;
    queryBox.x1 = 0;
    queryBox.y1 = 0;
    queryBox.x2 = maxX - minX;
    queryBox.y2 = maxY - minY;
    queryBox.maxScale = scale;

    // maxScale is stored using a Float32. Convert `scale` to the stored Float32 value.
    scale = queryBox.maxScale;

    var searchBox = [
        anchorPoint.x + queryBox.x1 / scale,
        anchorPoint.y + queryBox.y1 / scale * this.yStretch,
        anchorPoint.x + queryBox.x2 / scale,
        anchorPoint.y + queryBox.y2 / scale * this.yStretch
    ];

    var blockingBoxKeys = this.grid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
    var blockingBoxKeys2 = this.ignoredGrid.query(searchBox[0], searchBox[1], searchBox[2], searchBox[3]);
    for (var k = 0; k < blockingBoxKeys2.length; k++) {
        blockingBoxKeys.push(blockingBoxKeys2[k]);
    }

    for (var i = 0; i < blockingBoxKeys.length; i++) {
        var blocking = collisionBoxArray.get(blockingBoxKeys[i]);

        var sourceLayer = blocking.sourceLayerIndex;
        var featureIndex = blocking.featureIndex;
        if (sourceLayerFeatures[sourceLayer] === undefined) {
            sourceLayerFeatures[sourceLayer] = {};
        }

        if (!sourceLayerFeatures[sourceLayer][featureIndex]) {
            var blockingAnchorPoint = blocking.anchorPoint.matMult(rotationMatrix);
            var minPlacementScale = this.getPlacementScale(this.minScale, anchorPoint, queryBox, blockingAnchorPoint, blocking);
            if (minPlacementScale >= scale) {
                sourceLayerFeatures[sourceLayer][featureIndex] = true;
                result.push(blockingBoxKeys[i]);
            }
        }
    }

    return result;
};

CollisionTile.prototype.getPlacementScale = function(minPlacementScale, anchorPoint, box, blockingAnchorPoint, blocking) {

    // Find the lowest scale at which the two boxes can fit side by side without overlapping.
    // Original algorithm:
    var anchorDiffX = anchorPoint.x - blockingAnchorPoint.x;
    var anchorDiffY = anchorPoint.y - blockingAnchorPoint.y;
    var s1 = (blocking.x1 - box.x2) / anchorDiffX; // scale at which new box is to the left of old box
    var s2 = (blocking.x2 - box.x1) / anchorDiffX; // scale at which new box is to the right of old box
    var s3 = (blocking.y1 - box.y2) * this.yStretch / anchorDiffY; // scale at which new box is to the top of old box
    var s4 = (blocking.y2 - box.y1) * this.yStretch / anchorDiffY; // scale at which new box is to the bottom of old box

    if (isNaN(s1) || isNaN(s2)) s1 = s2 = 1;
    if (isNaN(s3) || isNaN(s4)) s3 = s4 = 1;

    var collisionFreeScale = Math.min(Math.max(s1, s2), Math.max(s3, s4));
    var blockingMaxScale = blocking.maxScale;
    var boxMaxScale = box.maxScale;

    if (collisionFreeScale > blockingMaxScale) {
        // After a box's maxScale the label has shrunk enough that the box is no longer needed to cover it,
        // so unblock the new box at the scale that the old box disappears.
        collisionFreeScale = blockingMaxScale;
    }

    if (collisionFreeScale > boxMaxScale) {
        // If the box can only be shown after it is visible, then the box can never be shown.
        // But the label can be shown after this box is not visible.
        collisionFreeScale = boxMaxScale;
    }

    if (collisionFreeScale > minPlacementScale &&
            collisionFreeScale >= blocking.placementScale) {
        // If this collision occurs at a lower scale than previously found collisions
        // and the collision occurs while the other label is visible

        // this this is the lowest scale at which the label won't collide with anything
        minPlacementScale = collisionFreeScale;
    }

    return minPlacementScale;
};


/**
 * Remember this collisionFeature and what scale it was placed at to block
 * later features from overlapping with it.
 *
 * @param {CollisionFeature} collisionFeature
 * @param {number} minPlacementScale
 * @private
 */
CollisionTile.prototype.insertCollisionFeature = function(collisionFeature, minPlacementScale, ignorePlacement) {

    var grid = ignorePlacement ? this.ignoredGrid : this.grid;
    var collisionBoxArray = this.collisionBoxArray;

    for (var k = collisionFeature.boxStartIndex; k < collisionFeature.boxEndIndex; k++) {
        var box = collisionBoxArray.get(k);
        box.placementScale = minPlacementScale;
        if (minPlacementScale < this.maxScale) {
            grid.insert(k, box.bbox0, box.bbox1, box.bbox2, box.bbox3);
        }
    }
};

},{"../data/bucket":305,"grid-index":259,"point-geometry":919}],373:[function(require,module,exports){
'use strict';

var interpolate = require('../util/interpolate');
var Anchor = require('../symbol/anchor');
var checkMaxAngle = require('./check_max_angle');

module.exports = getAnchors;

function getAnchors(line, spacing, maxAngle, shapedText, shapedIcon, glyphSize, boxScale, overscaling, tileExtent) {

    // Resample a line to get anchor points for labels and check that each
    // potential label passes text-max-angle check and has enough froom to fit
    // on the line.

    var angleWindowSize = shapedText ?
        3 / 5 * glyphSize * boxScale :
        0;

    var labelLength = Math.max(
        shapedText ? shapedText.right - shapedText.left : 0,
        shapedIcon ? shapedIcon.right - shapedIcon.left : 0);

    // Is the line continued from outside the tile boundary?
    var isLineContinued = line[0].x === 0 || line[0].x === tileExtent || line[0].y === 0 || line[0].y === tileExtent;

    // Is the label long, relative to the spacing?
    // If so, adjust the spacing so there is always a minimum space of `spacing / 4` between label edges.
    if (spacing - labelLength * boxScale  < spacing / 4) {
        spacing = labelLength * boxScale + spacing / 4;
    }

    // Offset the first anchor by:
    // Either half the label length plus a fixed extra offset if the line is not continued
    // Or half the spacing if the line is continued.

    // For non-continued lines, add a bit of fixed extra offset to avoid collisions at T intersections.
    var fixedExtraOffset = glyphSize * 2;

    var offset = !isLineContinued ?
        ((labelLength / 2 + fixedExtraOffset) * boxScale * overscaling) % spacing :
        (spacing / 2 * overscaling) % spacing;

    return resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength * boxScale, isLineContinued, false, tileExtent);
}


function resample(line, offset, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, placeAtMiddle, tileExtent) {

    var halfLabelLength = labelLength / 2;
    var lineLength = 0;
    for (var k = 0; k < line.length - 1; k++) {
        lineLength += line[k].dist(line[k + 1]);
    }

    var distance = 0,
        markedDistance = offset - spacing;

    var anchors = [];

    for (var i = 0; i < line.length - 1; i++) {

        var a = line[i],
            b = line[i + 1];

        var segmentDist = a.dist(b),
            angle = b.angleTo(a);

        while (markedDistance + spacing < distance + segmentDist) {
            markedDistance += spacing;

            var t = (markedDistance - distance) / segmentDist,
                x = interpolate(a.x, b.x, t),
                y = interpolate(a.y, b.y, t);

            // Check that the point is within the tile boundaries and that
            // the label would fit before the beginning and end of the line
            // if placed at this point.
            if (x >= 0 && x < tileExtent && y >= 0 && y < tileExtent &&
                    markedDistance - halfLabelLength >= 0 &&
                    markedDistance + halfLabelLength <= lineLength) {
                var anchor = new Anchor(x, y, angle, i)._round();

                if (!angleWindowSize || checkMaxAngle(line, anchor, labelLength, angleWindowSize, maxAngle)) {
                    anchors.push(anchor);
                }
            }
        }

        distance += segmentDist;
    }

    if (!placeAtMiddle && !anchors.length && !isLineContinued) {
        // The first attempt at finding anchors at which labels can be placed failed.
        // Try again, but this time just try placing one anchor at the middle of the line.
        // This has the most effect for short lines in overscaled tiles, since the
        // initial offset used in overscaled tiles is calculated to align labels with positions in
        // parent tiles instead of placing the label as close to the beginning as possible.
        anchors = resample(line, distance / 2, spacing, angleWindowSize, maxAngle, labelLength, isLineContinued, true, tileExtent);
    }

    return anchors;
}

},{"../symbol/anchor":367,"../util/interpolate":412,"./check_max_angle":368}],374:[function(require,module,exports){
'use strict';

var ShelfPack = require('shelf-pack');
var util = require('../util/util');

var SIZE_GROWTH_RATE = 4;
var DEFAULT_SIZE = 128;
// must be "DEFAULT_SIZE * SIZE_GROWTH_RATE ^ n" for some integer n
var MAX_SIZE = 2048;

module.exports = GlyphAtlas;
function GlyphAtlas() {
    this.width = DEFAULT_SIZE;
    this.height = DEFAULT_SIZE;

    this.bin = new ShelfPack(this.width, this.height);
    this.index = {};
    this.ids = {};
    this.data = new Uint8Array(this.width * this.height);
}

GlyphAtlas.prototype.getGlyphs = function() {
    var glyphs = {},
        split,
        name,
        id;

    for (var key in this.ids) {
        split = key.split('#');
        name = split[0];
        id = split[1];

        if (!glyphs[name]) glyphs[name] = [];
        glyphs[name].push(id);
    }

    return glyphs;
};

GlyphAtlas.prototype.getRects = function() {
    var rects = {},
        split,
        name,
        id;

    for (var key in this.ids) {
        split = key.split('#');
        name = split[0];
        id = split[1];

        if (!rects[name]) rects[name] = {};
        rects[name][id] = this.index[key];
    }

    return rects;
};


GlyphAtlas.prototype.addGlyph = function(id, name, glyph, buffer) {
    if (!glyph) return null;

    var key = name + "#" + glyph.id;

    // The glyph is already in this texture.
    if (this.index[key]) {
        if (this.ids[key].indexOf(id) < 0) {
            this.ids[key].push(id);
        }
        return this.index[key];
    }

    // The glyph bitmap has zero width.
    if (!glyph.bitmap) {
        return null;
    }

    var bufferedWidth = glyph.width + buffer * 2;
    var bufferedHeight = glyph.height + buffer * 2;

    // Add a 1px border around every image.
    var padding = 1;
    var packWidth = bufferedWidth + 2 * padding;
    var packHeight = bufferedHeight + 2 * padding;

    // Increase to next number divisible by 4, but at least 1.
    // This is so we can scale down the texture coordinates and pack them
    // into fewer bytes.
    packWidth += (4 - packWidth % 4);
    packHeight += (4 - packHeight % 4);

    var rect = this.bin.packOne(packWidth, packHeight);
    if (!rect) {
        this.resize();
        rect = this.bin.packOne(packWidth, packHeight);
    }
    if (!rect) {
        util.warnOnce('glyph bitmap overflow');
        return null;
    }

    this.index[key] = rect;
    this.ids[key] = [id];

    var target = this.data;
    var source = glyph.bitmap;
    for (var y = 0; y < bufferedHeight; y++) {
        var y1 = this.width * (rect.y + y + padding) + rect.x + padding;
        var y2 = bufferedWidth * y;
        for (var x = 0; x < bufferedWidth; x++) {
            target[y1 + x] = source[y2 + x];
        }
    }

    this.dirty = true;

    return rect;
};

GlyphAtlas.prototype.resize = function() {
    var prevWidth = this.width;
    var prevHeight = this.height;

    if (prevWidth >= MAX_SIZE || prevHeight >= MAX_SIZE) return;

    if (this.texture) {
        if (this.gl) {
            this.gl.deleteTexture(this.texture);
        }
        this.texture = null;
    }

    this.width *= SIZE_GROWTH_RATE;
    this.height *= SIZE_GROWTH_RATE;
    this.bin.resize(this.width, this.height);

    var buf = new ArrayBuffer(this.width * this.height);
    for (var i = 0; i < prevHeight; i++) {
        var src = new Uint8Array(this.data.buffer, prevHeight * i, prevWidth);
        var dst = new Uint8Array(buf, prevHeight * i * SIZE_GROWTH_RATE, prevWidth);
        dst.set(src);
    }
    this.data = new Uint8Array(buf);
};

GlyphAtlas.prototype.bind = function(gl) {
    this.gl = gl;
    if (!this.texture) {
        this.texture = gl.createTexture();
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.ALPHA, this.width, this.height, 0, gl.ALPHA, gl.UNSIGNED_BYTE, null);

    } else {
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
    }
};

GlyphAtlas.prototype.updateTexture = function(gl) {
    this.bind(gl);
    if (this.dirty) {
        gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, this.width, this.height, gl.ALPHA, gl.UNSIGNED_BYTE, this.data);
        this.dirty = false;
    }
};

},{"../util/util":418,"shelf-pack":964}],375:[function(require,module,exports){
'use strict';

var normalizeURL = require('../util/mapbox').normalizeGlyphsURL;
var getArrayBuffer = require('../util/ajax').getArrayBuffer;
var Glyphs = require('../util/glyphs');
var GlyphAtlas = require('../symbol/glyph_atlas');
var Protobuf = require('pbf');

module.exports = GlyphSource;

/**
 * A glyph source has a URL from which to load new glyphs and manages
 * GlyphAtlases in which to store glyphs used by the requested fontstacks
 * and ranges.
 *
 * @param {string} url glyph template url
 * @private
 */
function GlyphSource(url) {
    this.url = url && normalizeURL(url);
    this.atlases = {};
    this.stacks = {};
    this.loading = {};
}

GlyphSource.prototype.getSimpleGlyphs = function(fontstack, glyphIDs, uid, callback) {
    if (this.stacks[fontstack] === undefined) {
        this.stacks[fontstack] = {};
    }
    if (this.atlases[fontstack] === undefined) {
        this.atlases[fontstack] = new GlyphAtlas();
    }

    var glyphs = {};
    var stack = this.stacks[fontstack];
    var atlas = this.atlases[fontstack];

    // the number of pixels the sdf bitmaps are padded by
    var buffer = 3;

    var missing = {};
    var remaining = 0;
    var range;

    for (var i = 0; i < glyphIDs.length; i++) {
        var glyphID = glyphIDs[i];
        range = Math.floor(glyphID / 256);

        if (stack[range]) {
            var glyph = stack[range].glyphs[glyphID];
            var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
            if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
        } else {
            if (missing[range] === undefined) {
                missing[range] = [];
                remaining++;
            }
            missing[range].push(glyphID);
        }
    }

    if (!remaining) callback(undefined, glyphs, fontstack);

    var onRangeLoaded = function(err, range, data) {
        if (!err) {
            var stack = this.stacks[fontstack][range] = data.stacks[0];
            for (var i = 0; i < missing[range].length; i++) {
                var glyphID = missing[range][i];
                var glyph = stack.glyphs[glyphID];
                var rect  = atlas.addGlyph(uid, fontstack, glyph, buffer);
                if (glyph) glyphs[glyphID] = new SimpleGlyph(glyph, rect, buffer);
            }
        }
        remaining--;
        if (!remaining) callback(undefined, glyphs, fontstack);
    }.bind(this);

    for (var r in missing) {
        this.loadRange(fontstack, r, onRangeLoaded);
    }
};

// A simplified representation of the glyph containing only the properties needed for shaping.
function SimpleGlyph(glyph, rect, buffer) {
    var padding = 1;
    this.advance = glyph.advance;
    this.left = glyph.left - buffer - padding;
    this.top = glyph.top + buffer + padding;
    this.rect = rect;
}

GlyphSource.prototype.loadRange = function(fontstack, range, callback) {
    if (range * 256 > 65535) return callback('glyphs > 65535 not supported');

    if (this.loading[fontstack] === undefined) {
        this.loading[fontstack] = {};
    }
    var loading = this.loading[fontstack];

    if (loading[range]) {
        loading[range].push(callback);
    } else {
        loading[range] = [callback];

        var rangeName = (range * 256) + '-' + (range * 256 + 255);
        var url = glyphUrl(fontstack, rangeName, this.url);

        getArrayBuffer(url, function(err, data) {
            var glyphs = !err && new Glyphs(new Protobuf(new Uint8Array(data)));
            for (var i = 0; i < loading[range].length; i++) {
                loading[range][i](err, range, glyphs);
            }
            delete loading[range];
        });
    }
};

GlyphSource.prototype.getGlyphAtlas = function(fontstack) {
    return this.atlases[fontstack];
};

/**
 * Use CNAME sharding to load a specific glyph range over a randomized
 * but consistent subdomain.
 * @param {string} fontstack comma-joined fonts
 * @param {string} range comma-joined range
 * @param {url} url templated url
 * @param {string} [subdomains=abc] subdomains as a string where each letter is one.
 * @returns {string} a url to load that section of glyphs
 * @private
 */
function glyphUrl(fontstack, range, url, subdomains) {
    subdomains = subdomains || 'abc';

    return url
        .replace('{s}', subdomains[fontstack.length % subdomains.length])
        .replace('{fontstack}', fontstack)
        .replace('{range}', range);
}

},{"../symbol/glyph_atlas":374,"../util/ajax":401,"../util/glyphs":411,"../util/mapbox":415,"pbf":465}],376:[function(require,module,exports){
'use strict';

module.exports = function (features, textFeatures, geometries) {

    var leftIndex = {},
        rightIndex = {},
        mergedFeatures = [],
        mergedGeom = [],
        mergedTexts = [],
        mergedIndex = 0,
        k;

    function add(k) {
        mergedFeatures.push(features[k]);
        mergedGeom.push(geometries[k]);
        mergedTexts.push(textFeatures[k]);
        mergedIndex++;
    }

    function mergeFromRight(leftKey, rightKey, geom) {
        var i = rightIndex[leftKey];
        delete rightIndex[leftKey];
        rightIndex[rightKey] = i;

        mergedGeom[i][0].pop();
        mergedGeom[i][0] = mergedGeom[i][0].concat(geom[0]);
        return i;
    }

    function mergeFromLeft(leftKey, rightKey, geom) {
        var i = leftIndex[rightKey];
        delete leftIndex[rightKey];
        leftIndex[leftKey] = i;

        mergedGeom[i][0].shift();
        mergedGeom[i][0] = geom[0].concat(mergedGeom[i][0]);
        return i;
    }

    function getKey(text, geom, onRight) {
        var point = onRight ? geom[0][geom[0].length - 1] : geom[0][0];
        return text + ':' + point.x + ':' + point.y;
    }

    for (k = 0; k < features.length; k++) {
        var geom = geometries[k],
            text = textFeatures[k];

        if (!text) {
            add(k);
            continue;
        }

        var leftKey = getKey(text, geom),
            rightKey = getKey(text, geom, true);

        if ((leftKey in rightIndex) && (rightKey in leftIndex) && (rightIndex[leftKey] !== leftIndex[rightKey])) {
            // found lines with the same text adjacent to both ends of the current line, merge all three
            var j = mergeFromLeft(leftKey, rightKey, geom);
            var i = mergeFromRight(leftKey, rightKey, mergedGeom[j]);

            delete leftIndex[leftKey];
            delete rightIndex[rightKey];

            rightIndex[getKey(text, mergedGeom[i], true)] = i;
            mergedGeom[j] = null;

        } else if (leftKey in rightIndex) {
            // found mergeable line adjacent to the start of the current line, merge
            mergeFromRight(leftKey, rightKey, geom);

        } else if (rightKey in leftIndex) {
            // found mergeable line adjacent to the end of the current line, merge
            mergeFromLeft(leftKey, rightKey, geom);

        } else {
            // no adjacent lines, add as a new item
            add(k);
            leftIndex[leftKey] = mergedIndex - 1;
            rightIndex[rightKey] = mergedIndex - 1;
        }
    }

    return {
        features: mergedFeatures,
        textFeatures: mergedTexts,
        geometries: mergedGeom
    };
};

},{}],377:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');

module.exports = {
    getIconQuads: getIconQuads,
    getGlyphQuads: getGlyphQuads,
    SymbolQuad: SymbolQuad
};

var minScale = 0.5; // underscale by 1 zoom level

/**
 * A textured quad for rendering a single icon or glyph.
 *
 * The zoom range the glyph can be shown is defined by minScale and maxScale.
 *
 * @param {Point} anchorPoint the point the symbol is anchored around
 * @param {Point} tl The offset of the top left corner from the anchor.
 * @param {Point} tr The offset of the top right corner from the anchor.
 * @param {Point} bl The offset of the bottom left corner from the anchor.
 * @param {Point} br The offset of the bottom right corner from the anchor.
 * @param {Object} tex The texture coordinates.
 * @param {number} anchorAngle The angle of the label at it's center, not the angle of this quad.
 * @param {number} glyphAngle The angle of the glyph to be positioned in the quad.
 * @param {number} minScale The minimum scale, relative to the tile's intended scale, that the glyph can be shown at.
 * @param {number} maxScale The maximum scale, relative to the tile's intended scale, that the glyph can be shown at.
 *
 * @class SymbolQuad
 * @private
 */
function SymbolQuad(anchorPoint, tl, tr, bl, br, tex, anchorAngle, glyphAngle, minScale, maxScale) {
    this.anchorPoint = anchorPoint;
    this.tl = tl;
    this.tr = tr;
    this.bl = bl;
    this.br = br;
    this.tex = tex;
    this.anchorAngle = anchorAngle;
    this.glyphAngle = glyphAngle;
    this.minScale = minScale;
    this.maxScale = maxScale;
}

/**
 * Create the quads used for rendering an icon.
 *
 * @param {Anchor} anchor
 * @param {PositionedIcon} shapedIcon
 * @param {number} boxScale A magic number for converting glyph metric units to geometry units.
 * @param {Array<Array<Point>>} line
 * @param {StyleLayer} layer
 * @param {boolean} alongLine Whether the icon should be placed along the line.
 * @param {Shaping} shapedText Shaping for corresponding text
 * @returns {Array<SymbolQuad>}
 * @private
 */
function getIconQuads(anchor, shapedIcon, boxScale, line, layer, alongLine, shapedText, globalProperties, featureProperties) {
    var rect = shapedIcon.image.rect;
    var layout = layer.layout;

    var border = 1;
    var left = shapedIcon.left - border;
    var right = left + rect.w / shapedIcon.image.pixelRatio;
    var top = shapedIcon.top - border;
    var bottom = top + rect.h / shapedIcon.image.pixelRatio;
    var tl, tr, br, bl;

    // text-fit mode
    if (layout['icon-text-fit'] !== 'none' && shapedText) {
        var iconWidth = (right - left),
            iconHeight = (bottom - top),
            size = layout['text-size'] / 24,
            textLeft = shapedText.left * size,
            textRight = shapedText.right * size,
            textTop = shapedText.top * size,
            textBottom = shapedText.bottom * size,
            textWidth = textRight - textLeft,
            textHeight = textBottom - textTop,
            padT = layout['icon-text-fit-padding'][0],
            padR = layout['icon-text-fit-padding'][1],
            padB = layout['icon-text-fit-padding'][2],
            padL = layout['icon-text-fit-padding'][3],
            offsetY = layout['icon-text-fit'] === 'width' ? (textHeight - iconHeight) * 0.5 : 0,
            offsetX = layout['icon-text-fit'] === 'height' ? (textWidth - iconWidth) * 0.5 : 0,
            width = layout['icon-text-fit'] === 'width' || layout['icon-text-fit'] === 'both' ? textWidth : iconWidth,
            height = layout['icon-text-fit'] === 'height' || layout['icon-text-fit'] === 'both' ? textHeight : iconHeight;
        tl = new Point(textLeft + offsetX - padL,         textTop + offsetY - padT);
        tr = new Point(textLeft + offsetX + padR + width, textTop + offsetY - padT);
        br = new Point(textLeft + offsetX + padR + width, textTop + offsetY + padB + height);
        bl = new Point(textLeft + offsetX - padL,         textTop + offsetY + padB + height);
    // Normal icon size mode
    } else {
        tl = new Point(left, top);
        tr = new Point(right, top);
        br = new Point(right, bottom);
        bl = new Point(left, bottom);
    }

    var angle = layer.getLayoutValue('icon-rotate', globalProperties, featureProperties) * Math.PI / 180;
    if (alongLine) {
        var prev = line[anchor.segment];
        if (anchor.y === prev.y && anchor.x === prev.x && anchor.segment + 1 < line.length) {
            var next = line[anchor.segment + 1];
            angle += Math.atan2(anchor.y - next.y, anchor.x - next.x) + Math.PI;
        } else {
            angle += Math.atan2(anchor.y - prev.y, anchor.x - prev.x);
        }
    }

    if (angle) {
        var sin = Math.sin(angle),
            cos = Math.cos(angle),
            matrix = [cos, -sin, sin, cos];

        tl = tl.matMult(matrix);
        tr = tr.matMult(matrix);
        bl = bl.matMult(matrix);
        br = br.matMult(matrix);
    }

    return [new SymbolQuad(new Point(anchor.x, anchor.y), tl, tr, bl, br, shapedIcon.image.rect, 0, 0, minScale, Infinity)];
}

/**
 * Create the quads used for rendering a text label.
 *
 * @param {Anchor} anchor
 * @param {Shaping} shaping
 * @param {number} boxScale A magic number for converting from glyph metric units to geometry units.
 * @param {Array<Array<Point>>} line
 * @param {StyleLayer} layer
 * @param {boolean} alongLine Whether the label should be placed along the line.
 * @returns {Array<SymbolQuad>}
 * @private
 */
function getGlyphQuads(anchor, shaping, boxScale, line, layer, alongLine) {

    var textRotate = layer.layout['text-rotate'] * Math.PI / 180;
    var keepUpright = layer.layout['text-keep-upright'];

    var positionedGlyphs = shaping.positionedGlyphs;
    var quads = [];

    for (var k = 0; k < positionedGlyphs.length; k++) {
        var positionedGlyph = positionedGlyphs[k];
        var glyph = positionedGlyph.glyph;
        var rect = glyph.rect;

        if (!rect) continue;

        var centerX = (positionedGlyph.x + glyph.advance / 2) * boxScale;

        var glyphInstances;
        var labelMinScale = minScale;
        if (alongLine) {
            glyphInstances = [];
            labelMinScale = getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, true);
            if (keepUpright) {
                labelMinScale = Math.min(labelMinScale, getSegmentGlyphs(glyphInstances, anchor, centerX, line, anchor.segment, false));
            }

        } else {
            glyphInstances = [{
                anchorPoint: new Point(anchor.x, anchor.y),
                offset: 0,
                angle: 0,
                maxScale: Infinity,
                minScale: minScale
            }];
        }

        var x1 = positionedGlyph.x + glyph.left,
            y1 = positionedGlyph.y - glyph.top,
            x2 = x1 + rect.w,
            y2 = y1 + rect.h,

            otl = new Point(x1, y1),
            otr = new Point(x2, y1),
            obl = new Point(x1, y2),
            obr = new Point(x2, y2);

        for (var i = 0; i < glyphInstances.length; i++) {

            var instance = glyphInstances[i],
                tl = otl,
                tr = otr,
                bl = obl,
                br = obr;

            if (textRotate) {
                var sin = Math.sin(textRotate),
                    cos = Math.cos(textRotate),
                    matrix = [cos, -sin, sin, cos];

                tl = tl.matMult(matrix);
                tr = tr.matMult(matrix);
                bl = bl.matMult(matrix);
                br = br.matMult(matrix);
            }

            // Prevent label from extending past the end of the line
            var glyphMinScale = Math.max(instance.minScale, labelMinScale);

            var anchorAngle = (anchor.angle + instance.offset + 2 * Math.PI) % (2 * Math.PI);
            var glyphAngle = (instance.angle + instance.offset + 2 * Math.PI) % (2 * Math.PI);
            quads.push(new SymbolQuad(instance.anchorPoint, tl, tr, bl, br, rect, anchorAngle, glyphAngle, glyphMinScale, instance.maxScale));
        }
    }

    return quads;
}

/**
 * We can only render glyph quads that slide along a straight line. To draw
 * curved lines we need an instance of a glyph for each segment it appears on.
 * This creates all the instances of a glyph that are necessary to render a label.
 *
 * We need a
 * @param {Array<Object>} glyphInstances An empty array that glyphInstances are added to.
 * @param {Anchor} anchor
 * @param {number} offset The glyph's offset from the center of the label.
 * @param {Array<Point>} line
 * @param {number} segment The index of the segment of the line on which the anchor exists.
 * @param {boolean} forward If true get the glyphs that come later on the line, otherwise get the glyphs that come earlier.
 *
 * @returns {Array<Object>} glyphInstances
 * @private
 */
function getSegmentGlyphs(glyphs, anchor, offset, line, segment, forward) {
    var upsideDown = !forward;

    if (offset < 0) forward = !forward;

    if (forward) segment++;

    var newAnchorPoint = new Point(anchor.x, anchor.y);
    var end = line[segment];
    var prevScale = Infinity;

    offset = Math.abs(offset);

    var placementScale = minScale;

    while (true) {
        var distance = newAnchorPoint.dist(end);
        var scale = offset / distance;

        // Get the angle of the line segment
        var angle = Math.atan2(end.y - newAnchorPoint.y, end.x - newAnchorPoint.x);
        if (!forward) angle += Math.PI;

        glyphs.push({
            anchorPoint: newAnchorPoint,
            offset: upsideDown ? Math.PI : 0,
            minScale: scale,
            maxScale: prevScale,
            angle: (angle + 2 * Math.PI) % (2 * Math.PI)
        });

        if (scale <= placementScale) break;

        newAnchorPoint = end;

        // skip duplicate nodes
        while (newAnchorPoint.equals(end)) {
            segment += forward ? 1 : -1;
            end = line[segment];
            if (!end) {
                return scale;
            }
        }

        var unit = end.sub(newAnchorPoint)._unit();
        newAnchorPoint = newAnchorPoint.sub(unit._mult(distance));

        prevScale = scale;
    }

    return placementScale;
}

},{"point-geometry":919}],378:[function(require,module,exports){
'use strict';

var resolveTokens = require('../util/token');

module.exports = resolveText;

/**
 * For an array of features determine what glyphs need to be loaded
 * and apply any text preprocessing. The remaining users of text should
 * use the `textFeatures` key returned by this function rather than accessing
 * feature text directly.
 * @private
 */
function resolveText(features, layoutProperties, codepoints) {
    var textFeatures = [];

    for (var i = 0, fl = features.length; i < fl; i++) {
        var text = resolveTokens(features[i].properties, layoutProperties['text-field']);
        if (!text) {
            textFeatures[i] = null;
            continue;
        }
        text = text.toString();

        var transform = layoutProperties['text-transform'];
        if (transform === 'uppercase') {
            text = text.toLocaleUpperCase();
        } else if (transform === 'lowercase') {
            text = text.toLocaleLowerCase();
        }

        for (var j = 0; j < text.length; j++) {
            codepoints[text.charCodeAt(j)] = true;
        }

        // Track indexes of features with text.
        textFeatures[i] = text;
    }

    return textFeatures;
}

},{"../util/token":417}],379:[function(require,module,exports){
'use strict';

module.exports = {
    shapeText: shapeText,
    shapeIcon: shapeIcon
};


// The position of a glyph relative to the text's anchor point.
function PositionedGlyph(codePoint, x, y, glyph) {
    this.codePoint = codePoint;
    this.x = x;
    this.y = y;
    this.glyph = glyph;
}

// A collection of positioned glyphs and some metadata
function Shaping(positionedGlyphs, text, top, bottom, left, right) {
    this.positionedGlyphs = positionedGlyphs;
    this.text = text;
    this.top = top;
    this.bottom = bottom;
    this.left = left;
    this.right = right;
}

function shapeText(text, glyphs, maxWidth, lineHeight, horizontalAlign, verticalAlign, justify, spacing, translate) {

    var positionedGlyphs = [];
    var shaping = new Shaping(positionedGlyphs, text, translate[1], translate[1], translate[0], translate[0]);

    // the y offset *should* be part of the font metadata
    var yOffset = -17;

    var x = 0;
    var y = yOffset;

    for (var i = 0; i < text.length; i++) {
        var codePoint = text.charCodeAt(i);
        var glyph = glyphs[codePoint];

        if (!glyph) continue;

        positionedGlyphs.push(new PositionedGlyph(codePoint, x, y, glyph));
        x += glyph.advance + spacing;
    }

    if (!positionedGlyphs.length) return false;

    linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate);

    return shaping;
}

var invisible = {
    0x20:   true, // space
    0x200b: true  // zero-width space
};

var breakable = {
    0x20:   true, // space
    0x26:   true, // ampersand
    0x2b:   true, // plus sign
    0x2d:   true, // hyphen-minus
    0x2f:   true, // solidus
    0xad:   true, // soft hyphen
    0xb7:   true, // middle dot
    0x200b: true, // zero-width space
    0x2010: true, // hyphen
    0x2013: true  // en dash
};

function linewrap(shaping, glyphs, lineHeight, maxWidth, horizontalAlign, verticalAlign, justify, translate) {
    var lastSafeBreak = null;

    var lengthBeforeCurrentLine = 0;
    var lineStartIndex = 0;
    var line = 0;

    var maxLineLength = 0;

    var positionedGlyphs = shaping.positionedGlyphs;

    if (maxWidth) {
        for (var i = 0; i < positionedGlyphs.length; i++) {
            var positionedGlyph = positionedGlyphs[i];

            positionedGlyph.x -= lengthBeforeCurrentLine;
            positionedGlyph.y += lineHeight * line;

            if (positionedGlyph.x > maxWidth && lastSafeBreak !== null) {

                var lineLength = positionedGlyphs[lastSafeBreak + 1].x;
                maxLineLength = Math.max(lineLength, maxLineLength);

                for (var k = lastSafeBreak + 1; k <= i; k++) {
                    positionedGlyphs[k].y += lineHeight;
                    positionedGlyphs[k].x -= lineLength;
                }

                if (justify) {
                    // Collapse invisible characters.
                    var lineEnd = lastSafeBreak;
                    if (invisible[positionedGlyphs[lastSafeBreak].codePoint]) {
                        lineEnd--;
                    }

                    justifyLine(positionedGlyphs, glyphs, lineStartIndex, lineEnd, justify);
                }

                lineStartIndex = lastSafeBreak + 1;
                lastSafeBreak = null;
                lengthBeforeCurrentLine += lineLength;
                line++;
            }

            if (breakable[positionedGlyph.codePoint]) {
                lastSafeBreak = i;
            }
        }
    }

    var lastPositionedGlyph = positionedGlyphs[positionedGlyphs.length - 1];
    var lastLineLength = lastPositionedGlyph.x + glyphs[lastPositionedGlyph.codePoint].advance;
    maxLineLength = Math.max(maxLineLength, lastLineLength);

    var height = (line + 1) * lineHeight;

    justifyLine(positionedGlyphs, glyphs, lineStartIndex, positionedGlyphs.length - 1, justify);
    align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate);

    // Calculate the bounding box
    shaping.top += -verticalAlign * height;
    shaping.bottom = shaping.top + height;
    shaping.left += -horizontalAlign * maxLineLength;
    shaping.right = shaping.left + maxLineLength;
}

function justifyLine(positionedGlyphs, glyphs, start, end, justify) {
    var lastAdvance = glyphs[positionedGlyphs[end].codePoint].advance;
    var lineIndent = (positionedGlyphs[end].x + lastAdvance) * justify;

    for (var j = start; j <= end; j++) {
        positionedGlyphs[j].x -= lineIndent;
    }

}

function align(positionedGlyphs, justify, horizontalAlign, verticalAlign, maxLineLength, lineHeight, line, translate) {
    var shiftX = (justify - horizontalAlign) * maxLineLength + translate[0];
    var shiftY = (-verticalAlign * (line + 1) + 0.5) * lineHeight + translate[1];

    for (var j = 0; j < positionedGlyphs.length; j++) {
        positionedGlyphs[j].x += shiftX;
        positionedGlyphs[j].y += shiftY;
    }
}


function shapeIcon(image, layout) {
    if (!image || !image.rect) return null;

    var dx = layout['icon-offset'][0];
    var dy = layout['icon-offset'][1];
    var x1 = dx - image.width / 2;
    var x2 = x1 + image.width;
    var y1 = dy - image.height / 2;
    var y2 = y1 + image.height;

    return new PositionedIcon(image, y1, y2, x1, x2);
}

function PositionedIcon(image, top, bottom, left, right) {
    this.image = image;
    this.top = top;
    this.bottom = bottom;
    this.left = left;
    this.right = right;
}

},{}],380:[function(require,module,exports){
'use strict';

var ShelfPack = require('shelf-pack');
var browser = require('../util/browser');
var util = require('../util/util');

module.exports = SpriteAtlas;
function SpriteAtlas(width, height) {
    this.width = width;
    this.height = height;

    this.bin = new ShelfPack(width, height);
    this.images = {};
    this.data = false;
    this.texture = 0; // WebGL ID
    this.filter = 0; // WebGL ID
    this.pixelRatio = 1;
    this.dirty = true;
}

function copyBitmap(src, srcStride, srcX, srcY, dst, dstStride, dstX, dstY, width, height, wrap) {
    var srcI = srcY * srcStride + srcX;
    var dstI = dstY * dstStride + dstX;
    var x, y;

    if (wrap) {
        // add 1 pixel wrapped padding on each side of the image
        dstI -= dstStride;
        for (y = -1; y <= height; y++, srcI = ((y + height) % height + srcY) * srcStride + srcX, dstI += dstStride) {
            for (x = -1; x <= width; x++) {
                dst[dstI + x] = src[srcI + ((x + width) % width)];
            }
        }

    } else {
        for (y = 0; y < height; y++, srcI += srcStride, dstI += dstStride) {
            for (x = 0; x < width; x++) {
                dst[dstI + x] = src[srcI + x];
            }
        }
    }
}

SpriteAtlas.prototype.allocateImage = function(pixelWidth, pixelHeight) {

    pixelWidth = pixelWidth / this.pixelRatio;
    pixelHeight = pixelHeight / this.pixelRatio;

    // Increase to next number divisible by 4, but at least 1.
    // This is so we can scale down the texture coordinates and pack them
    // into 2 bytes rather than 4 bytes.
    // Pad icons to prevent them from polluting neighbours during linear interpolation
    var padding = 2;
    var packWidth = pixelWidth + padding + (4 - (pixelWidth + padding) % 4);
    var packHeight = pixelHeight + padding + (4 - (pixelHeight + padding) % 4);// + 4;

    var rect = this.bin.packOne(packWidth, packHeight);
    if (!rect) {
        util.warnOnce('SpriteAtlas out of space.');
        return null;
    }

    return rect;
};

SpriteAtlas.prototype.getImage = function(name, wrap) {
    if (this.images[name]) {
        return this.images[name];
    }

    if (!this.sprite) {
        return null;
    }

    var pos = this.sprite.getSpritePosition(name);
    if (!pos.width || !pos.height) {
        return null;
    }

    var rect = this.allocateImage(pos.width, pos.height);
    if (!rect) {
        return null;
    }

    var image = new AtlasImage(rect, pos.width / pos.pixelRatio, pos.height / pos.pixelRatio, pos.sdf, pos.pixelRatio / this.pixelRatio);
    this.images[name] = image;

    this.copy(rect, pos, wrap);

    return image;
};


// Return position of a repeating fill pattern.
SpriteAtlas.prototype.getPosition = function(name, repeating) {
    var image = this.getImage(name, repeating);
    var rect = image && image.rect;

    if (!rect) {
        return null;
    }

    var width = image.width * image.pixelRatio;
    var height = image.height * image.pixelRatio;
    var padding = 1;

    return {
        size: [image.width, image.height],
        tl: [(rect.x + padding)         / this.width, (rect.y + padding)          / this.height],
        br: [(rect.x + padding + width) / this.width, (rect.y + padding + height) / this.height]
    };
};


SpriteAtlas.prototype.allocate = function() {
    if (!this.data) {
        var w = Math.floor(this.width * this.pixelRatio);
        var h = Math.floor(this.height * this.pixelRatio);
        this.data = new Uint32Array(w * h);
        for (var i = 0; i < this.data.length; i++) {
            this.data[i] = 0;
        }
    }
};


SpriteAtlas.prototype.copy = function(dst, src, wrap) {
    if (!this.sprite.img.data) return;
    var srcImg = new Uint32Array(this.sprite.img.data.buffer);

    this.allocate();
    var dstImg = this.data;

    var padding = 1;

    copyBitmap(
        /* source buffer */  srcImg,
        /* source stride */  this.sprite.img.width,
        /* source x */       src.x,
        /* source y */       src.y,
        /* dest buffer */    dstImg,
        /* dest stride */    this.width * this.pixelRatio,
        /* dest x */         (dst.x + padding) * this.pixelRatio,
        /* dest y */         (dst.y + padding) * this.pixelRatio,
        /* icon dimension */ src.width,
        /* icon dimension */ src.height,
        /* wrap */ wrap
    );

    this.dirty = true;
};

SpriteAtlas.prototype.setSprite = function(sprite) {
    if (sprite) {
        this.pixelRatio = browser.devicePixelRatio > 1 ? 2 : 1;

        if (this.canvas) {
            this.canvas.width = this.width * this.pixelRatio;
            this.canvas.height = this.height * this.pixelRatio;
        }
    }
    this.sprite = sprite;
};

SpriteAtlas.prototype.addIcons = function(icons, callback) {
    for (var i = 0; i < icons.length; i++) {
        this.getImage(icons[i]);
    }

    callback(null, this.images);
};

SpriteAtlas.prototype.bind = function(gl, linear) {
    var first = false;
    if (!this.texture) {
        this.texture = gl.createTexture();
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
        first = true;
    } else {
        gl.bindTexture(gl.TEXTURE_2D, this.texture);
    }

    var filterVal = linear ? gl.LINEAR : gl.NEAREST;
    if (filterVal !== this.filter) {
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, filterVal);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, filterVal);
        this.filter = filterVal;
    }

    if (this.dirty) {
        this.allocate();

        if (first) {
            gl.texImage2D(
                gl.TEXTURE_2D, // enum target
                0, // ind level
                gl.RGBA, // ind internalformat
                this.width * this.pixelRatio, // GLsizei width
                this.height * this.pixelRatio, // GLsizei height
                0, // ind border
                gl.RGBA, // enum format
                gl.UNSIGNED_BYTE, // enum type
                new Uint8Array(this.data.buffer) // Object data
            );
        } else {
            gl.texSubImage2D(
                gl.TEXTURE_2D, // enum target
                0, // int level
                0, // int xoffset
                0, // int yoffset
                this.width * this.pixelRatio, // long width
                this.height * this.pixelRatio, // long height
                gl.RGBA, // enum format
                gl.UNSIGNED_BYTE, // enum type
                new Uint8Array(this.data.buffer) // Object pixels
            );
        }

        this.dirty = false;
    }
};

function AtlasImage(rect, width, height, sdf, pixelRatio) {
    this.rect = rect;
    this.width = width;
    this.height = height;
    this.sdf = sdf;
    this.pixelRatio = pixelRatio;
}

},{"../util/browser":402,"../util/util":418,"shelf-pack":964}],381:[function(require,module,exports){
'use strict';

var StructArrayType = require('../util/struct_array');
var util = require('../util/util');
var Point = require('point-geometry');

/*
 *
 * A StructArray implementation of symbolInstances from data/bucket/symbol_bucket.js
 * this will allow symbolInstances to be transferred between the worker and main threads
 *
 * @class SymbolInstanceArray
 * @private
 */

var SymbolInstancesArray = module.exports = new StructArrayType({
    members: [

        { type: 'Uint16', name: 'textBoxStartIndex' },
        { type: 'Uint16', name: 'textBoxEndIndex' },
        { type: 'Uint16', name: 'iconBoxStartIndex' },
        { type: 'Uint16', name: 'iconBoxEndIndex' },
        { type: 'Uint16', name: 'glyphQuadStartIndex' },
        { type: 'Uint16', name: 'glyphQuadEndIndex' },
        { type: 'Uint16', name: 'iconQuadStartIndex' },
        { type: 'Uint16', name: 'iconQuadEndIndex' },

        // each symbolInstance is centered around the anchor point
        { type: 'Int16', name: 'anchorPointX' },
        { type: 'Int16', name: 'anchorPointY' },

        // index -- not sure if we need this -@mollymerp
        { type: 'Int8', name: 'index' }
    ]
});

util.extendAll(SymbolInstancesArray.prototype.StructType.prototype, {
    get anchorPoint() {
        return new Point(this.anchorPointX, this.anchorPointY);
    }
});



},{"../util/struct_array":416,"../util/util":418,"point-geometry":919}],382:[function(require,module,exports){
'use strict';

var StructArrayType = require('../util/struct_array');
var util = require('../util/util');
var Point = require('point-geometry');
var SymbolQuad = require('./quads').SymbolQuad;

// notes from ansis on slack:
// it would be best if they are added to a buffer in advance so that they are only created once. There would be a separate buffer with all the individual collision boxes and then SymbolInstance would store the beginning and end indexes of a feature's collisionboxes. CollisionFeature wouldn't really exist as a standalone thing, it would just be a range of boxes in the big collision box buffer

/*
 *
 * A StructArray implementation of glyphQuad from symbol/quads
 * this will allow glyph quads to be transferred between the worker and main threads along with the rest of
 * the symbolInstances
 *
 * @class SymbolQuadsArray
 * @private
 */

var SymbolQuadsArray = module.exports = new StructArrayType({
    members: [
        // the quad is centered around the anchor point
        { type: 'Int16', name: 'anchorPointX' },
        { type: 'Int16', name: 'anchorPointY' },

        // the offsets of the tl (top-left), tr, bl, br corners from the anchor point
        // do these need to be floats?
        { type: 'Float32', name: 'tlX' },
        { type: 'Float32', name: 'tlY' },
        { type: 'Float32', name: 'trX' },
        { type: 'Float32', name: 'trY' },
        { type: 'Float32', name: 'blX' },
        { type: 'Float32', name: 'blY' },
        { type: 'Float32', name: 'brX' },
        { type: 'Float32', name: 'brY' },

        // texture coordinates (height, width, x, and y)
        { type: 'Int16', name: 'texH' },
        { type: 'Int16', name: 'texW' },
        { type: 'Int16', name: 'texX' },
        { type: 'Int16', name: 'texY' },

        // the angle of the label at it's center, not the angle of this quad.
        { type: 'Float32', name: 'anchorAngle' },
        // the angle of this quad.
        { type: 'Float32', name: 'glyphAngle' },

        // quad is only valid for scales < maxScale && scale > minScale.
        { type: 'Float32', name: 'maxScale' },
        { type: 'Float32', name: 'minScale' }
    ]
});

util.extendAll(SymbolQuadsArray.prototype.StructType.prototype, {
    get anchorPoint() {
        return new Point(this.anchorPointX, this.anchorPointY);
    },
    get SymbolQuad() {
        return new SymbolQuad(this.anchorPoint,
            new Point(this.tlX, this.tlY),
            new Point(this.trX, this.trY),
            new Point(this.blX, this.blY),
            new Point(this.brX, this.brY),
            { x: this.texX, y: this.texY, h: this.texH, w: this.texW, height: this.texH, width: this.texW },
            this.anchorAngle,
            this.glyphAngle,
            this.minScale,
            this.maxScale);
    }
});


},{"../util/struct_array":416,"../util/util":418,"./quads":377,"point-geometry":919}],383:[function(require,module,exports){
'use strict';

var DOM = require('../util/dom');
var Point = require('point-geometry');

var handlers = {
    scrollZoom: require('./handler/scroll_zoom'),
    boxZoom: require('./handler/box_zoom'),
    dragRotate: require('./handler/drag_rotate'),
    dragPan: require('./handler/drag_pan'),
    keyboard: require('./handler/keyboard'),
    doubleClickZoom: require('./handler/dblclick_zoom'),
    touchZoomRotate: require('./handler/touch_zoom_rotate')
};

module.exports = function bindHandlers(map, options) {
    var el = map.getCanvasContainer();
    var contextMenuEvent = null;
    var startPos = null;
    var tapped = null;

    for (var name in handlers) {
        map[name] = new handlers[name](map, options);
        if (options.interactive && options[name]) {
            map[name].enable();
        }
    }

    el.addEventListener('mouseout', onMouseOut, false);
    el.addEventListener('mousedown', onMouseDown, false);
    el.addEventListener('mouseup', onMouseUp, false);
    el.addEventListener('mousemove', onMouseMove, false);
    el.addEventListener('touchstart', onTouchStart, false);
    el.addEventListener('touchend', onTouchEnd, false);
    el.addEventListener('touchmove', onTouchMove, false);
    el.addEventListener('touchcancel', onTouchCancel, false);
    el.addEventListener('click', onClick, false);
    el.addEventListener('dblclick', onDblClick, false);
    el.addEventListener('contextmenu', onContextMenu, false);

    function onMouseOut(e) {
        fireMouseEvent('mouseout', e);
    }

    function onMouseDown(e) {
        map.stop();
        startPos = DOM.mousePos(el, e);
        fireMouseEvent('mousedown', e);
    }

    function onMouseUp(e) {
        var rotating = map.dragRotate && map.dragRotate.isActive();

        if (contextMenuEvent && !rotating) {
            fireMouseEvent('contextmenu', contextMenuEvent);
        }

        contextMenuEvent = null;
        fireMouseEvent('mouseup', e);
    }

    function onMouseMove(e) {
        if (map.dragPan && map.dragPan.isActive()) return;
        if (map.dragRotate && map.dragRotate.isActive()) return;

        var target = e.toElement || e.target;
        while (target && target !== el) target = target.parentNode;
        if (target !== el) return;

        fireMouseEvent('mousemove', e);
    }

    function onTouchStart(e) {
        map.stop();
        fireTouchEvent('touchstart', e);

        if (!e.touches || e.touches.length > 1) return;

        if (!tapped) {
            tapped = setTimeout(onTouchTimeout, 300);

        } else {
            clearTimeout(tapped);
            tapped = null;
            fireMouseEvent('dblclick', e);
        }
    }

    function onTouchMove(e) {
        fireTouchEvent('touchmove', e);
    }

    function onTouchEnd(e) {
        fireTouchEvent('touchend', e);
    }

    function onTouchCancel(e) {
        fireTouchEvent('touchcancel', e);
    }

    function onTouchTimeout() {
        tapped = null;
    }

    function onClick(e) {
        var pos = DOM.mousePos(el, e);

        if (pos.equals(startPos)) {
            fireMouseEvent('click', e);
        }
    }

    function onDblClick(e) {
        fireMouseEvent('dblclick', e);
        e.preventDefault();
    }

    function onContextMenu(e) {
        contextMenuEvent = e;
        e.preventDefault();
    }

    function fireMouseEvent(type, e) {
        var pos = DOM.mousePos(el, e);

        return map.fire(type, {
            lngLat: map.unproject(pos),
            point: pos,
            originalEvent: e
        });
    }

    function fireTouchEvent(type, e) {
        var touches = DOM.touchPos(el, e);
        var singular = touches.reduce(function(prev, curr, i, arr) {
            return prev.add(curr.div(arr.length));
        }, new Point(0, 0));

        return map.fire(type, {
            lngLat: map.unproject(singular),
            point: singular,
            lngLats: touches.map(function(t) { return map.unproject(t); }, this),
            points: touches,
            originalEvent: e
        });
    }
};

/**
 * @typedef {Object} MapMouseEvent
 * @property {string} type The event type.
 * @property {Map} target The `Map` object that fired the event.
 * @property {MouseEvent} originalEvent
 * @property {Point} point The pixel coordinates of the mouse event target, relative to the map
 *   and measured from the top left corner.
 * @property {LngLat} lngLat The geographic location on the map of the mouse event target.
 */

/**
 * @typedef {Object} MapTouchEvent
 * @property {string} type The event type.
 * @property {Map} target The `Map` object that fired the event.
 * @property {TouchEvent} originalEvent
 * @property {Point} point The pixel coordinates of the center of the touch event points, relative to the map
 *   and measured from the top left corner.
 * @property {LngLat} lngLat The geographic location on the map of the center of the touch event points.
 * @property {Array<Point>} points The array of pixel coordinates corresponding to
 *   a [touch event's `touches`](https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent/touches)
 *   property.
 * @property {Array<LngLat>} lngLats The geographical locations on the map corresponding to
 *   a [touch event's `touches`](https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent/touches)
 *   property.
 */

},{"../util/dom":404,"./handler/box_zoom":389,"./handler/dblclick_zoom":390,"./handler/drag_pan":391,"./handler/drag_rotate":392,"./handler/keyboard":393,"./handler/scroll_zoom":394,"./handler/touch_zoom_rotate":395,"point-geometry":919}],384:[function(require,module,exports){
'use strict';

var util = require('../util/util');
var interpolate = require('../util/interpolate');
var browser = require('../util/browser');
var LngLat = require('../geo/lng_lat');
var LngLatBounds = require('../geo/lng_lat_bounds');
var Point = require('point-geometry');

/**
 * Options common to {@link Map#jumpTo}, {@link Map#easeTo}, and {@link Map#flyTo},
 * controlling the destination's location, zoom level, bearing, and pitch.
 * All properties are optional. Unspecified
 * options will default to the map's current value for that property.
 *
 * @typedef {Object} CameraOptions
 * @property {LngLatLike} center The destination's center.
 * @property {number} zoom The destination's zoom level.
 * @property {number} bearing The destination's bearing (rotation), measured in degrees counter-clockwise from north.
 * @property {number} pitch The destination's pitch (tilt), measured in degrees.
 * @property {LngLatLike} around If a `zoom` is specified, `around` determines the zoom center (defaults to the center of the map).
 */

/**
 * Options common to map movement methods that involve animation, such as {@link Map#panBy} and
 * {@link Map#easeTo}, controlling the duration and easing function of the animation. All properties
 * are optional.
 *
 * @typedef {Object} AnimationOptions
 * @property {number} duration The animation's duration, measured in milliseconds.
 * @property {Function} easing The animation's easing function.
 * @property {PointLike} offset `x` and `y` coordinates representing the animation's origin of movement relative to the map's center.
 * @property {boolean} animate If `false`, no animation will occur.
 */

var Camera = module.exports = function() {};

util.extend(Camera.prototype, /** @lends Map.prototype */{
    /**
     * Returns the map's geographical centerpoint.
     *
     * @returns {LngLat} The map's geographical centerpoint.
     */
    getCenter: function() { return this.transform.center; },

    /**
     * Sets the map's geographical centerpoint. Equivalent to `jumpTo({center: center})`.
     *
     * @param {LngLatLike} center The centerpoint to set.
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     * @example
     * map.setCenter([-74, 38]);
     */
    setCenter: function(center, eventData) {
        this.jumpTo({center: center}, eventData);
        return this;
    },

    /**
     * Pans the map by the specified offest.
     *
     * @param {Array<number>} offset `x` and `y` coordinates by which to pan the map.
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    panBy: function(offset, options, eventData) {
        this.panTo(this.transform.center,
            util.extend({offset: Point.convert(offset).mult(-1)}, options), eventData);
        return this;
    },

    /**
     * Pans the map to the specified location, with an animated transition.
     *
     * @param {LngLatLike} lnglat The location to pan the map to.
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    panTo: function(lnglat, options, eventData) {
        return this.easeTo(util.extend({
            center: lnglat
        }, options), eventData);
    },


    /**
     * Returns the map's current zoom level.
     *
     * @returns {number} The map's current zoom level.
     */
    getZoom: function() { return this.transform.zoom; },

    /**
     * Sets the map's zoom level. Equivalent to `jumpTo({zoom: zoom})`.
     *
     * @param {number} zoom The zoom level to set (0-20).
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires moveend
     * @fires zoomend
     * @returns {Map} `this`
     * @example
     * // zoom the map to 5
     * map.setZoom(5);
     */
    setZoom: function(zoom, eventData) {
        this.jumpTo({zoom: zoom}, eventData);
        return this;
    },

    /**
     * Zooms the map to the specified zoom level, with an animated transition.
     *
     * @param {number} zoom The zoom level to transition to.
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires moveend
     * @fires zoomend
     * @returns {Map} `this`
     */
    zoomTo: function(zoom, options, eventData) {
        return this.easeTo(util.extend({
            zoom: zoom
        }, options), eventData);
    },

    /**
     * Increases the map's zoom level by 1.
     *
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires moveend
     * @fires zoomend
     * @returns {Map} `this`
     */
    zoomIn: function(options, eventData) {
        this.zoomTo(this.getZoom() + 1, options, eventData);
        return this;
    },

    /**
     * Decreases the map's zoom level by 1.
     *
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires moveend
     * @fires zoomend
     * @returns {Map} `this`
     */
    zoomOut: function(options, eventData) {
        this.zoomTo(this.getZoom() - 1, options, eventData);
        return this;
    },


    /**
     * Returns the map's current bearing (rotation).
     *
     * @returns {number} The map's current bearing, measured in degrees counter-clockwise from north.
     */
    getBearing: function() { return this.transform.bearing; },

    /**
     * Sets the maps' bearing (rotation). Equivalent to `jumpTo({bearing: bearing})`.
     *
     * @param {number} bearing The bearing to set, measured in degrees counter-clockwise from north.
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     * @example
     * // rotate the map to 90 degrees
     * map.setBearing(90);
     */
    setBearing: function(bearing, eventData) {
        this.jumpTo({bearing: bearing}, eventData);
        return this;
    },

    /**
     * Rotates the map to the specified bearing, with an animated transition.
     *
     * @param {number} bearing The bearing to rotate the map to, measured in degrees counter-clockwise from north.
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    rotateTo: function(bearing, options, eventData) {
        return this.easeTo(util.extend({
            bearing: bearing
        }, options), eventData);
    },

    /**
     * Rotates the map to a bearing of 0 (due north), with an animated transition.
     *
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    resetNorth: function(options, eventData) {
        this.rotateTo(0, util.extend({duration: 1000}, options), eventData);
        return this;
    },

    /**
     * Snaps the map's bearing to 0 (due north), if the current bearing is close enough to it (i.e. within the `bearingSnap` threshold).
     *
     * @param {AnimationOptions} [options]
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    snapToNorth: function(options, eventData) {
        if (Math.abs(this.getBearing()) < this._bearingSnap) {
            return this.resetNorth(options, eventData);
        }
        return this;
    },

    /**
     * Returns the map's current pitch (tilt).
     *
     * @returns {number} The map's current pitch, measured in degrees away from the plane of the screen.
     */
    getPitch: function() { return this.transform.pitch; },

    /**
     * Sets the map's pitch (tilt). Equivalent to `jumpTo({pitch: pitch})`.
     *
     * @param {number} pitch The pitch to set, measured in degrees away from the plane of the screen (0-60).
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    setPitch: function(pitch, eventData) {
        this.jumpTo({pitch: pitch}, eventData);
        return this;
    },


    /**
     * Pans and zooms the map to contain its visible area within the specified geographical bounds.
     *
     * @param {LngLatBoundsLike} bounds The bounds to fit the visible area into.
     * @param {Object} [options]
     * @param {boolean} [options.linear=false] If `true`, the map transitions using
     *     {@link Map#easeTo}. If `false`, the map transitions using {@link Map#flyTo}. See
     *     {@link Map#flyTo} for information about the options specific to that animated transition.
     * @param {Function} [options.easing] An easing function for the animated transition.
     * @param {number} [options.padding=0] The amount of padding, in pixels, to allow around the specified bounds.
     * @param {PointLike} [options.offset=[0, 0]] The center of the given bounds relative to the map's center, measured in pixels.
     * @param {number} [options.maxZoom] The maximum zoom level to allow when the map view transitions to the specified bounds.
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires moveend
     * @returns {Map} `this`
     */
    fitBounds: function(bounds, options, eventData) {

        options = util.extend({
            padding: 0,
            offset: [0, 0],
            maxZoom: Infinity
        }, options);

        bounds = LngLatBounds.convert(bounds);

        var offset = Point.convert(options.offset),
            tr = this.transform,
            nw = tr.project(bounds.getNorthWest()),
            se = tr.project(bounds.getSouthEast()),
            size = se.sub(nw),
            scaleX = (tr.width - options.padding * 2 - Math.abs(offset.x) * 2) / size.x,
            scaleY = (tr.height - options.padding * 2 - Math.abs(offset.y) * 2) / size.y;

        options.center = tr.unproject(nw.add(se).div(2));
        options.zoom = Math.min(tr.scaleZoom(tr.scale * Math.min(scaleX, scaleY)), options.maxZoom);
        options.bearing = 0;

        return options.linear ?
            this.easeTo(options, eventData) :
            this.flyTo(options, eventData);
    },

    /**
     * Changes any combination of center, zoom, bearing, and pitch, without
     * an animated transition. The map will retain its current values for any
     * details not specified in `options`.
     *
     * @param {CameraOptions} options
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires rotate
     * @fires pitch
     * @fires zoomend
     * @fires moveend
     * @returns {Map} `this`
     */
    jumpTo: function(options, eventData) {
        this.stop();

        var tr = this.transform,
            zoomChanged = false,
            bearingChanged = false,
            pitchChanged = false;

        if ('zoom' in options && tr.zoom !== +options.zoom) {
            zoomChanged = true;
            tr.zoom = +options.zoom;
        }

        if ('center' in options) {
            tr.center = LngLat.convert(options.center);
        }

        if ('bearing' in options && tr.bearing !== +options.bearing) {
            bearingChanged = true;
            tr.bearing = +options.bearing;
        }

        if ('pitch' in options && tr.pitch !== +options.pitch) {
            pitchChanged = true;
            tr.pitch = +options.pitch;
        }

        this.fire('movestart', eventData)
            .fire('move', eventData);

        if (zoomChanged) {
            this.fire('zoomstart', eventData)
                .fire('zoom', eventData)
                .fire('zoomend', eventData);
        }

        if (bearingChanged) {
            this.fire('rotate', eventData);
        }

        if (pitchChanged) {
            this.fire('pitch', eventData);
        }

        return this.fire('moveend', eventData);
    },

    /**
     * Changes any combination of center, zoom, bearing, and pitch, with an animated transition
     * between old and new values. The map will retain its current values for any
     * details not specified in `options`.
     *
     * @param {CameraOptions|AnimationOptions} options Options describing the destination and animation of the transition.
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires rotate
     * @fires pitch
     * @fires zoomend
     * @fires moveend
     * @returns {Map} `this`
     */
    easeTo: function(options, eventData) {
        this.stop();

        options = util.extend({
            offset: [0, 0],
            duration: 500,
            easing: util.ease
        }, options);

        var tr = this.transform,
            offset = Point.convert(options.offset),
            startZoom = this.getZoom(),
            startBearing = this.getBearing(),
            startPitch = this.getPitch(),

            zoom = 'zoom' in options ? +options.zoom : startZoom,
            bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing,
            pitch = 'pitch' in options ? +options.pitch : startPitch,

            toLngLat,
            toPoint;

        if ('center' in options) {
            toLngLat = LngLat.convert(options.center);
            toPoint = tr.centerPoint.add(offset);
        } else if ('around' in options) {
            toLngLat = LngLat.convert(options.around);
            toPoint = tr.locationPoint(toLngLat);
        } else {
            toPoint = tr.centerPoint.add(offset);
            toLngLat = tr.pointLocation(toPoint);
        }

        var fromPoint = tr.locationPoint(toLngLat);

        if (options.animate === false) options.duration = 0;

        this.zooming = (zoom !== startZoom);
        this.rotating = (startBearing !== bearing);
        this.pitching = (pitch !== startPitch);

        if (!options.noMoveStart) {
            this.fire('movestart', eventData);
        }
        if (this.zooming) {
            this.fire('zoomstart', eventData);
        }

        clearTimeout(this._onEaseEnd);

        this._ease(function (k) {
            if (this.zooming) {
                tr.zoom = interpolate(startZoom, zoom, k);
            }

            if (this.rotating) {
                tr.bearing = interpolate(startBearing, bearing, k);
            }

            if (this.pitching) {
                tr.pitch = interpolate(startPitch, pitch, k);
            }

            tr.setLocationAtPoint(toLngLat, fromPoint.add(toPoint.sub(fromPoint)._mult(k)));

            this.fire('move', eventData);
            if (this.zooming) {
                this.fire('zoom', eventData);
            }
            if (this.rotating) {
                this.fire('rotate', eventData);
            }
            if (this.pitching) {
                this.fire('pitch', eventData);
            }
        }, function() {
            if (options.delayEndEvents) {
                this._onEaseEnd = setTimeout(this._easeToEnd.bind(this, eventData), options.delayEndEvents);
            } else {
                this._easeToEnd(eventData);
            }
        }.bind(this), options);

        return this;
    },

    _easeToEnd: function(eventData) {
        var wasZooming = this.zooming;
        this.zooming = false;
        this.rotating = false;
        this.pitching = false;

        if (wasZooming) {
            this.fire('zoomend', eventData);
        }
        this.fire('moveend', eventData);

    },

    /**
     * Changes any combination of center, zoom, bearing, and pitch, animating the transition along a curve that
     * evokes flight. The animation seamlessly incorporates zooming and panning to help
     * the user maintain her bearings even after traversing a great distance.
     *
     * @param {Object} options Options describing the destination and animation of the transition.
     *     Accepts [CameraOptions](#CameraOptions), [AnimationOptions](#AnimationOptions),
     *     and the following additional options.
     * @param {number} [options.curve=1.42] The zooming "curve" that will occur along the
     *     flight path. A high value maximizes zooming for an exaggerated animation, while a low
     *     value minimizes zooming for an effect closer to {@link Map#easeTo}. 1.42 is the average
     *     value selected by participants in the user study discussed in
     *     [van Wijk (2003)](https://www.win.tue.nl/~vanwijk/zoompan.pdf). A value of
     *     `Math.pow(6, 0.25)` would be equivalent to the root mean squared average velocity. A
     *     value of 1 would produce a circular motion.
     * @param {number} [options.minZoom] The zero-based zoom level at the peak of the flight path. If
     *     `options.curve` is specified, this option is ignored.
     * @param {number} [options.speed=1.2] The average speed of the animation defined in relation to
     *     `options.curve`. A speed of 1.2 means that the map appears to move along the flight path
     *     by 1.2 times `options.curve` screenfuls every second. A _screenful_ is the map's visible span.
     *     It does not correspond to a fixed physical distance, but varies by zoom level.
     * @param {number} [options.screenSpeed] The average speed of the animation measured in screenfuls
     *     per second, assuming a linear timing curve. If `options.speed` is specified, this option is ignored.
     * @param {Function} [options.easing] An easing function for the animated transition.
     * @param {Object} [eventData] Data to propagate to any event listeners.
     * @fires movestart
     * @fires zoomstart
     * @fires move
     * @fires zoom
     * @fires rotate
     * @fires pitch
     * @fires zoomend
     * @fires moveend
     * @returns {Map} `this`
     * @example
     * // fly with default options to null island
     * map.flyTo({center: [0, 0], zoom: 9});
     * // using flyTo options
     * map.flyTo({
     *   center: [0, 0],
     *   zoom: 9,
     *   speed: 0.2,
     *   curve: 1,
     *   easing: function(t) {
     *     return t;
     *   }
     * });
     */
    flyTo: function(options, eventData) {
        // This method implements an “optimal path” animation, as detailed in:
        //
        // Van Wijk, Jarke J.; Nuij, Wim A. A. “Smooth and efficient zooming and panning.” INFOVIS
        //   ’03. pp. 15–22. <https://www.win.tue.nl/~vanwijk/zoompan.pdf#page=5>.
        //
        // Where applicable, local variable documentation begins with the associated variable or
        // function in van Wijk (2003).

        this.stop();

        options = util.extend({
            offset: [0, 0],
            speed: 1.2,
            curve: 1.42,
            easing: util.ease
        }, options);

        var tr = this.transform,
            offset = Point.convert(options.offset),
            startZoom = this.getZoom(),
            startBearing = this.getBearing(),
            startPitch = this.getPitch();

        var center = 'center' in options ? LngLat.convert(options.center) : this.getCenter();
        var zoom = 'zoom' in options ?  +options.zoom : startZoom;
        var bearing = 'bearing' in options ? this._normalizeBearing(options.bearing, startBearing) : startBearing;
        var pitch = 'pitch' in options ? +options.pitch : startPitch;

        // If a path crossing the antimeridian would be shorter, extend the final coordinate so that
        // interpolating between the two endpoints will cross it.
        if (Math.abs(tr.center.lng) + Math.abs(center.lng) > 180) {
            if (tr.center.lng > 0 && center.lng < 0) {
                center.lng += 360;
            } else if (tr.center.lng < 0 && center.lng > 0) {
                center.lng -= 360;
            }
        }

        var scale = tr.zoomScale(zoom - startZoom),
            from = tr.point,
            to = 'center' in options ? tr.project(center).sub(offset.div(scale)) : from;

        var startWorldSize = tr.worldSize,
            rho = options.curve,

            // w₀: Initial visible span, measured in pixels at the initial scale.
            w0 = Math.max(tr.width, tr.height),
            // w₁: Final visible span, measured in pixels with respect to the initial scale.
            w1 = w0 / scale,
            // Length of the flight path as projected onto the ground plane, measured in pixels from
            // the world image origin at the initial scale.
            u1 = to.sub(from).mag();

        if ('minZoom' in options) {
            var minZoom = util.clamp(Math.min(options.minZoom, startZoom, zoom), tr.minZoom, tr.maxZoom);
            // w<sub>m</sub>: Maximum visible span, measured in pixels with respect to the initial
            // scale.
            var wMax = w0 / tr.zoomScale(minZoom - startZoom);
            rho = Math.sqrt(wMax / u1 * 2);
        }

        // ρ²
        var rho2 = rho * rho;

        /**
         * rᵢ: Returns the zoom-out factor at one end of the animation.
         *
         * @param i 0 for the ascent or 1 for the descent.
         * @private
         */
        function r(i) {
            var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
            return Math.log(Math.sqrt(b * b + 1) - b);
        }

        function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
        function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
        function tanh(n) { return sinh(n) / cosh(n); }

        // r₀: Zoom-out factor during ascent.
        var r0 = r(0),
            /**
             * w(s): Returns the visible span on the ground, measured in pixels with respect to the
             * initial scale.
             *
             * Assumes an angular field of view of 2 arctan ½ ≈ 53°.
             * @private
             */
            w = function (s) { return (cosh(r0) / cosh(r0 + rho * s)); },
            /**
             * u(s): Returns the distance along the flight path as projected onto the ground plane,
             * measured in pixels from the world image origin at the initial scale.
             * @private
             */
            u = function (s) { return w0 * ((cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2) / u1; },
            // S: Total length of the flight path, measured in ρ-screenfuls.
            S = (r(1) - r0) / rho;

        // When u₀ = u₁, the optimal path doesn’t require both ascent and descent.
        if (Math.abs(u1) < 0.000001) {
            // Perform a more or less instantaneous transition if the path is too short.
            if (Math.abs(w0 - w1) < 0.000001) return this.easeTo(options);

            var k = w1 < w0 ? -1 : 1;
            S = Math.abs(Math.log(w1 / w0)) / rho;

            u = function() { return 0; };
            w = function(s) { return Math.exp(k * rho * s); };
        }

        if ('duration' in options) {
            options.duration = +options.duration;
        } else {
            var V = 'screenSpeed' in options ? +options.screenSpeed / rho : +options.speed;
            options.duration = 1000 * S / V;
        }

        this.zooming = true;
        if (startBearing !== bearing) this.rotating = true;
        if (startPitch !== pitch) this.pitching = true;

        this.fire('movestart', eventData);
        this.fire('zoomstart', eventData);

        this._ease(function (k) {
            // s: The distance traveled along the flight path, measured in ρ-screenfuls.
            var s = k * S,
                us = u(s);

            tr.zoom = startZoom + tr.scaleZoom(1 / w(s));
            tr.center = tr.unproject(from.add(to.sub(from).mult(us)), startWorldSize);

            if (this.rotating) {
                tr.bearing = interpolate(startBearing, bearing, k);
            }
            if (this.pitching) {
                tr.pitch = interpolate(startPitch, pitch, k);
            }

            this.fire('move', eventData);
            this.fire('zoom', eventData);
            if (this.rotating) {
                this.fire('rotate', eventData);
            }
            if (this.pitching) {
                this.fire('pitch', eventData);
            }
        }, function() {
            this.zooming = false;
            this.rotating = false;
            this.pitching = false;

            this.fire('zoomend', eventData);
            this.fire('moveend', eventData);
        }, options);

        return this;
    },

    isEasing: function() {
        return !!this._abortFn;
    },

    /**
     * Stops any animated transition underway.
     *
     * @returns {Map} `this`
     */
    stop: function() {
        if (this._abortFn) {
            this._abortFn();
            this._finishEase();
        }
        return this;
    },

    _ease: function(frame, finish, options) {
        this._finishFn = finish;
        this._abortFn = browser.timed(function (t) {
            frame.call(this, options.easing(t));
            if (t === 1) {
                this._finishEase();
            }
        }, options.animate === false ? 0 : options.duration, this);
    },

    _finishEase: function() {
        delete this._abortFn;
        // The finish function might emit events which trigger new eases, which
        // set a new _finishFn. Ensure we don't delete it unintentionally.
        var finish = this._finishFn;
        delete this._finishFn;
        finish.call(this);
    },

    // convert bearing so that it's numerically close to the current one so that it interpolates properly
    _normalizeBearing: function(bearing, currentBearing) {
        bearing = util.wrap(bearing, -180, 180);
        var diff = Math.abs(bearing - currentBearing);
        if (Math.abs(bearing - 360 - currentBearing) < diff) bearing -= 360;
        if (Math.abs(bearing + 360 - currentBearing) < diff) bearing += 360;
        return bearing;
    },

    _updateEasing: function(duration, zoom, bezier) {
        var easing;

        if (this.ease) {
            var ease = this.ease,
                t = (Date.now() - ease.start) / ease.duration,
                speed = ease.easing(t + 0.01) - ease.easing(t),

                // Quick hack to make new bezier that is continuous with last
                x = 0.27 / Math.sqrt(speed * speed + 0.0001) * 0.01,
                y = Math.sqrt(0.27 * 0.27 - x * x);

            easing = util.bezier(x, y, 0.25, 1);
        } else {
            easing = bezier ? util.bezier.apply(util, bezier) : util.ease;
        }

        // store information on current easing
        this.ease = {
            start: (new Date()).getTime(),
            to: Math.pow(2, zoom),
            duration: duration,
            easing: easing
        };

        return easing;
    }
});

/**
 * Fired whenever the map's pitch (tilt) changes.
 *
 * @event pitch
 * @memberof Map
 * @instance
 * @property {MapEventData} data
 */

},{"../geo/lng_lat":315,"../geo/lng_lat_bounds":316,"../util/browser":402,"../util/interpolate":412,"../util/util":418,"point-geometry":919}],385:[function(require,module,exports){
'use strict';

var Control = require('./control');
var DOM = require('../../util/dom');
var util = require('../../util/util');

module.exports = Attribution;

/**
 * An `Attribution` control presents the map's [attribution information](https://www.mapbox.com/help/attribution/).
 * Extends [`Control`](#Control).
 *
 * @class Attribution
 * @param {Object} [options]
 * @param {string} [options.position='bottom-right'] A string indicating the control's position on the map. Options are `'top-right'`, `'top-left'`, `'bottom-right'`, and `'bottom-left'`.
 * @example
 * var map = new mapboxgl.Map({attributionControl: false})
 *     .addControl(new mapboxgl.Attribution({position: 'top-left'}));
 */
function Attribution(options) {
    util.setOptions(this, options);
}

Attribution.createAttributionString = function(sources) {
    var attributions = [];

    for (var id in sources) {
        var source = sources[id];
        if (source.attribution && attributions.indexOf(source.attribution) < 0) {
            attributions.push(source.attribution);
        }
    }

    // remove any entries that are substrings of another entry.
    // first sort by length so that substrings come first
    attributions.sort(function (a, b) { return a.length - b.length; });
    attributions = attributions.filter(function (attrib, i) {
        for (var j = i + 1; j < attributions.length; j++) {
            if (attributions[j].indexOf(attrib) >= 0) { return false; }
        }
        return true;
    });

    return attributions.join(' | ');
};

Attribution.prototype = util.inherit(Control, {
    options: {
        position: 'bottom-right'
    },

    onAdd: function(map) {
        var className = 'mapboxgl-ctrl-attrib',
            container = this._container = DOM.create('div', className, map.getContainer());

        this._update();
        map.on('source.load', this._update.bind(this));
        map.on('source.change', this._update.bind(this));
        map.on('source.remove', this._update.bind(this));
        map.on('moveend', this._updateEditLink.bind(this));

        return container;
    },

    _update: function() {
        if (this._map.style) {
            this._container.innerHTML = Attribution.createAttributionString(this._map.style.sources);
        }

        this._editLink = this._container.getElementsByClassName('mapbox-improve-map')[0];
        this._updateEditLink();
    },

    _updateEditLink: function() {
        if (this._editLink) {
            var center = this._map.getCenter();
            this._editLink.href = 'https://www.mapbox.com/map-feedback/#/' +
                    center.lng + '/' + center.lat + '/' + Math.round(this._map.getZoom() + 1);
        }
    }
});

},{"../../util/dom":404,"../../util/util":418,"./control":386}],386:[function(require,module,exports){
'use strict';

var util = require('../../util/util');
var Evented = require('../../util/evented');
module.exports = Control;

/**
 * The base class for map-related interface elements.
 *
 * The `Control` class mixes in [`Evented`](#Evented) methods.
 *
 * @class Control
 */
function Control() {}

Control.prototype = {
    /**
     * Adds the control to a map.
     *
     * @param {Map} map The Mapbox GL JS map to add the control to.
     * @returns {Control} `this`
     */
    addTo: function(map) {
        this._map = map;
        var container = this._container = this.onAdd(map);
        if (this.options && this.options.position) {
            var pos = this.options.position;
            var corner = map._controlCorners[pos];
            container.className += ' mapboxgl-ctrl';
            if (pos.indexOf('bottom') !== -1) {
                corner.insertBefore(container, corner.firstChild);
            } else {
                corner.appendChild(container);
            }
        }

        return this;
    },

    /**
     * Removes the control from the map it has been added to.
     *
     * @returns {Control} `this`
     */
    remove: function() {
        this._container.parentNode.removeChild(this._container);
        if (this.onRemove) this.onRemove(this._map);
        this._map = null;
        return this;
    }
};

util.extend(Control.prototype, Evented);

},{"../../util/evented":410,"../../util/util":418}],387:[function(require,module,exports){
'use strict';

var Control = require('./control');
var browser = require('../../util/browser');
var DOM = require('../../util/dom');
var util = require('../../util/util');

module.exports = Geolocate;

var geoOptions = { enableHighAccuracy: false, timeout: 6000 /* 6sec */ };


/**
 * A `Geolocate` control provides a button that uses the browser's geolocation
 * API to locate the user on the map. Extends [`Control`](#Control).
 *
 * @class Geolocate
 * @param {Object} [options]
 * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `'top-right'`, `'top-left'`, `'bottom-right'`, and `'bottom-left'`.
 * @example
 * map.addControl(new mapboxgl.Geolocate({position: 'top-left'})); // position is optional
 */
function Geolocate(options) {
    util.setOptions(this, options);
}

Geolocate.prototype = util.inherit(Control, {
    options: {
        position: 'top-right'
    },

    onAdd: function(map) {
        var className = 'mapboxgl-ctrl';

        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
        if (!browser.supportsGeolocation) return container;

        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));

        this._geolocateButton = DOM.create('button', (className + '-icon ' + className + '-geolocate'), this._container);
        this._geolocateButton.type = 'button';
        this._geolocateButton.addEventListener('click', this._onClickGeolocate.bind(this));
        return container;
    },

    _onContextMenu: function(e) {
        e.preventDefault();
    },

    _onClickGeolocate: function() {
        navigator.geolocation.getCurrentPosition(this._success.bind(this), this._error.bind(this), geoOptions);

        // This timeout ensures that we still call finish() even if
        // the user declines to share their location in Firefox
        this._timeoutId = setTimeout(this._finish.bind(this), 10000 /* 10sec */);
    },

    _success: function(position) {
        this._map.jumpTo({
            center: [position.coords.longitude, position.coords.latitude],
            zoom: 17,
            bearing: 0,
            pitch: 0
        });

        this.fire('geolocate', position);
        this._finish();
    },

    _error: function(error) {
        this.fire('error', error);
        this._finish();
    },

    _finish: function() {
        if (this._timeoutId) { clearTimeout(this._timeoutId); }
        this._timeoutId = undefined;
    }

});

/**
 * geolocate event.
 *
 * @event geolocate
 * @memberof Geolocate
 * @instance
 * @property {Position} data The returned [Position](https://developer.mozilla.org/en-US/docs/Web/API/Position) object from the callback in [Geolocation.getCurrentPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition).
 *
 */

/**
 * error event.
 *
 * @event error
 * @memberof Geolocate
 * @instance
 * @property {PositionError} data The returned [PositionError](https://developer.mozilla.org/en-US/docs/Web/API/PositionError) object from the callback in [Geolocation.getCurrentPosition()](https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition).
 *
 */

},{"../../util/browser":402,"../../util/dom":404,"../../util/util":418,"./control":386}],388:[function(require,module,exports){
'use strict';

var Control = require('./control');
var DOM = require('../../util/dom');
var util = require('../../util/util');

module.exports = Navigation;

/**
 * A `Navigation` control contains zoom buttons and a compass.
 * Extends [`Control`](#Control).
 *
 * @class Navigation
 * @param {Object} [options]
 * @param {string} [options.position='top-right'] A string indicating the control's position on the map. Options are `'top-right'`, `'top-left'`, `'bottom-right'`, and `'bottom-left'`.
 * @example
 * var nav = new mapboxgl.Navigation({position: 'top-left'}); // position is optional
 * map.addControl(nav);
 */
function Navigation(options) {
    util.setOptions(this, options);
}

Navigation.prototype = util.inherit(Control, {
    options: {
        position: 'top-right'
    },

    onAdd: function(map) {
        var className = 'mapboxgl-ctrl';

        var container = this._container = DOM.create('div', className + '-group', map.getContainer());
        this._container.addEventListener('contextmenu', this._onContextMenu.bind(this));

        this._zoomInButton = this._createButton(className + '-icon ' + className + '-zoom-in', map.zoomIn.bind(map));
        this._zoomOutButton = this._createButton(className + '-icon ' + className + '-zoom-out', map.zoomOut.bind(map));
        this._compass = this._createButton(className + '-icon ' + className + '-compass', map.resetNorth.bind(map));

        this._compassArrow = DOM.create('div', 'arrow', this._compass);

        this._compass.addEventListener('mousedown', this._onCompassDown.bind(this));
        this._onCompassMove = this._onCompassMove.bind(this);
        this._onCompassUp = this._onCompassUp.bind(this);

        map.on('rotate', this._rotateCompassArrow.bind(this));
        this._rotateCompassArrow();

        this._el = map.getCanvasContainer();

        return container;
    },

    _onContextMenu: function(e) {
        e.preventDefault();
    },

    _onCompassDown: function(e) {
        if (e.button !== 0) return;

        DOM.disableDrag();
        document.addEventListener('mousemove', this._onCompassMove);
        document.addEventListener('mouseup', this._onCompassUp);

        this._el.dispatchEvent(copyMouseEvent(e));
        e.stopPropagation();
    },

    _onCompassMove: function(e) {
        if (e.button !== 0) return;

        this._el.dispatchEvent(copyMouseEvent(e));
        e.stopPropagation();
    },

    _onCompassUp: function(e) {
        if (e.button !== 0) return;

        document.removeEventListener('mousemove', this._onCompassMove);
        document.removeEventListener('mouseup', this._onCompassUp);
        DOM.enableDrag();

        this._el.dispatchEvent(copyMouseEvent(e));
        e.stopPropagation();
    },

    _createButton: function(className, fn) {
        var a = DOM.create('button', className, this._container);
        a.type = 'button';
        a.addEventListener('click', function() { fn(); });
        return a;
    },

    _rotateCompassArrow: function() {
        var rotate = 'rotate(' + (this._map.transform.angle * (180 / Math.PI)) + 'deg)';
        this._compassArrow.style.transform = rotate;
    }
});


function copyMouseEvent(e) {
    return new MouseEvent(e.type, {
        button: 2,    // right click
        buttons: 2,   // right click
        bubbles: true,
        cancelable: true,
        detail: e.detail,
        view: e.view,
        screenX: e.screenX,
        screenY: e.screenY,
        clientX: e.clientX,
        clientY: e.clientY,
        movementX: e.movementX,
        movementY: e.movementY,
        ctrlKey: e.ctrlKey,
        shiftKey: e.shiftKey,
        altKey: e.altKey,
        metaKey: e.metaKey
    });
}

},{"../../util/dom":404,"../../util/util":418,"./control":386}],389:[function(require,module,exports){
'use strict';

var DOM = require('../../util/dom'),
    LngLatBounds = require('../../geo/lng_lat_bounds'),
    util = require('../../util/util');

module.exports = BoxZoomHandler;

/**
 * The `BoxZoomHandler` allows the user to zoom the map to fit within a bounding box.
 * The bounding box is defined by clicking and holding `shift` while dragging the cursor.
 *
 * @class BoxZoomHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 */
function BoxZoomHandler(map) {
    this._map = map;
    this._el = map.getCanvasContainer();
    this._container = map.getContainer();

    util.bindHandlers(this);
}

BoxZoomHandler.prototype = {

    _enabled: false,
    _active: false,

    /**
     * Returns a Boolean indicating whether the "box zoom" interaction is enabled.
     *
     * @returns {boolean} `true` if the "box zoom" interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Returns a Boolean indicating whether the "box zoom" interaction is active, i.e. currently being used.
     *
     * @returns {boolean} `true` if the "box zoom" interaction is active.
     */
    isActive: function () {
        return this._active;
    },

    /**
     * Enables the "box zoom" interaction.
     *
     * @example
     *   map.boxZoom.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._el.addEventListener('mousedown', this._onMouseDown, false);
        this._enabled = true;
    },

    /**
     * Disables the "box zoom" interaction.
     *
     * @example
     *   map.boxZoom.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._el.removeEventListener('mousedown', this._onMouseDown);
        this._enabled = false;
    },

    _onMouseDown: function (e) {
        if (!(e.shiftKey && e.button === 0)) return;

        document.addEventListener('mousemove', this._onMouseMove, false);
        document.addEventListener('keydown', this._onKeyDown, false);
        document.addEventListener('mouseup', this._onMouseUp, false);

        DOM.disableDrag();
        this._startPos = DOM.mousePos(this._el, e);
        this._active = true;
    },

    _onMouseMove: function (e) {
        var p0 = this._startPos,
            p1 = DOM.mousePos(this._el, e);

        if (!this._box) {
            this._box = DOM.create('div', 'mapboxgl-boxzoom', this._container);
            this._container.classList.add('mapboxgl-crosshair');
            this._fireEvent('boxzoomstart', e);
        }

        var minX = Math.min(p0.x, p1.x),
            maxX = Math.max(p0.x, p1.x),
            minY = Math.min(p0.y, p1.y),
            maxY = Math.max(p0.y, p1.y);

        DOM.setTransform(this._box, 'translate(' + minX + 'px,' + minY + 'px)');

        this._box.style.width = (maxX - minX) + 'px';
        this._box.style.height = (maxY - minY) + 'px';
    },

    _onMouseUp: function (e) {
        if (e.button !== 0) return;

        var p0 = this._startPos,
            p1 = DOM.mousePos(this._el, e),
            bounds = new LngLatBounds(this._map.unproject(p0), this._map.unproject(p1));

        this._finish();

        if (p0.x === p1.x && p0.y === p1.y) {
            this._fireEvent('boxzoomcancel', e);
        } else {
            this._map
                .fitBounds(bounds, {linear: true})
                .fire('boxzoomend', { originalEvent: e, boxZoomBounds: bounds });
        }
    },

    _onKeyDown: function (e) {
        if (e.keyCode === 27) {
            this._finish();
            this._fireEvent('boxzoomcancel', e);
        }
    },

    _finish: function () {
        this._active = false;

        document.removeEventListener('mousemove', this._onMouseMove, false);
        document.removeEventListener('keydown', this._onKeyDown, false);
        document.removeEventListener('mouseup', this._onMouseUp, false);

        this._container.classList.remove('mapboxgl-crosshair');

        if (this._box) {
            this._box.parentNode.removeChild(this._box);
            this._box = null;
        }

        DOM.enableDrag();
    },

    _fireEvent: function (type, e) {
        return this._map.fire(type, { originalEvent: e });
    }
};

/**
 * @typedef {Object} MapBoxZoomEvent
 * @property {MouseEvent} originalEvent
 * @property {LngLatBounds} boxZoomBounds The bounding box of the "box zoom" interaction.
 *   This property is only provided for `boxzoomend` events.
 */

/**
 * Fired when a "box zoom" interaction starts. See [`BoxZoomHandler`](#BoxZoomHandler).
 *
 * @event boxzoomstart
 * @memberof Map
 * @instance
 * @property {MapBoxZoomEvent} data
 */

/**
 * Fired when a "box zoom" interaction ends.  See [`BoxZoomHandler`](#BoxZoomHandler).
 *
 * @event boxzoomend
 * @memberof Map
 * @instance
 * @type {Object}
 * @property {MapBoxZoomEvent} data
 */

/**
 * Fired when the user cancels a "box zoom" interaction, or when the bounding box does not meet the minimum size threshold.
 * See [`BoxZoomHandler`](#BoxZoomHandler).
 *
 * @event boxzoomcancel
 * @memberof Map
 * @instance
 * @property {MapBoxZoomEvent} data
 */

},{"../../geo/lng_lat_bounds":316,"../../util/dom":404,"../../util/util":418}],390:[function(require,module,exports){
'use strict';

module.exports = DoubleClickZoomHandler;

/**
 * The `DoubleClickZoomHandler` allows the user to zoom the map at a point by
 * double clicking.
 *
 * @class DoubleClickZoomHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 */
function DoubleClickZoomHandler(map) {
    this._map = map;
    this._onDblClick = this._onDblClick.bind(this);
}

DoubleClickZoomHandler.prototype = {

    _enabled: false,

    /**
     * Returns a Boolean indicating whether the "double click to zoom" interaction is enabled.
     *
     * @returns {boolean} `true` if the "double click to zoom" interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Enables the "double click to zoom" interaction.
     *
     * @example
     * map.doubleClickZoom.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._map.on('dblclick', this._onDblClick);
        this._enabled = true;
    },

    /**
     * Disables the "double click to zoom" interaction.
     *
     * @example
     * map.doubleClickZoom.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._map.off('dblclick', this._onDblClick);
        this._enabled = false;
    },

    _onDblClick: function (e) {
        this._map.zoomTo(
            this._map.getZoom() + (e.originalEvent.shiftKey ? -1 : 1),
            {around: e.lngLat},
            e
        );
    }
};

},{}],391:[function(require,module,exports){
'use strict';

var DOM = require('../../util/dom'),
    util = require('../../util/util');

module.exports = DragPanHandler;

var inertiaLinearity = 0.3,
    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
    inertiaMaxSpeed = 1400, // px/s
    inertiaDeceleration = 2500; // px/s^2


/**
 * The `DragPanHandler` allows the user to pan the map by clicking and dragging
 * the cursor.
 *
 * @class DragPanHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 */
function DragPanHandler(map) {
    this._map = map;
    this._el = map.getCanvasContainer();

    util.bindHandlers(this);
}

DragPanHandler.prototype = {

    _enabled: false,
    _active: false,

    /**
     * Returns a Boolean indicating whether the "drag to pan" interaction is enabled.
     *
     * @returns {boolean} `true` if the "drag to pan" interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Returns a Boolean indicating whether the "drag to pan" interaction is active, i.e. currently being used.
     *
     * @returns {boolean} `true` if the "drag to pan" interaction is active.
     */
    isActive: function () {
        return this._active;
    },

    /**
     * Enables the "drag to pan" interaction.
     *
     * @example
     * map.dragPan.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._el.addEventListener('mousedown', this._onDown);
        this._el.addEventListener('touchstart', this._onDown);
        this._enabled = true;
    },

    /**
     * Disables the "drag to pan" interaction.
     *
     * @example
     * map.dragPan.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._el.removeEventListener('mousedown', this._onDown);
        this._el.removeEventListener('touchstart', this._onDown);
        this._enabled = false;
    },

    _onDown: function (e) {
        if (this._ignoreEvent(e)) return;
        if (this.isActive()) return;

        if (e.touches) {
            document.addEventListener('touchmove', this._onMove);
            document.addEventListener('touchend', this._onTouchEnd);
        } else {
            document.addEventListener('mousemove', this._onMove);
            document.addEventListener('mouseup', this._onMouseUp);
        }

        this._active = false;
        this._startPos = this._pos = DOM.mousePos(this._el, e);
        this._inertia = [[Date.now(), this._pos]];
    },

    _onMove: function (e) {
        if (this._ignoreEvent(e)) return;

        if (!this.isActive()) {
            this._active = true;
            this._fireEvent('dragstart', e);
            this._fireEvent('movestart', e);
        }

        var pos = DOM.mousePos(this._el, e),
            map = this._map;

        map.stop();
        this._drainInertiaBuffer();
        this._inertia.push([Date.now(), pos]);

        map.transform.setLocationAtPoint(map.transform.pointLocation(this._pos), pos);

        this._fireEvent('drag', e);
        this._fireEvent('move', e);

        this._pos = pos;

        e.preventDefault();
    },

    _onUp: function (e) {
        if (!this.isActive()) return;

        this._active = false;
        this._fireEvent('dragend', e);
        this._drainInertiaBuffer();

        var finish = function() {
            this._fireEvent('moveend', e);
        }.bind(this);

        var inertia = this._inertia;
        if (inertia.length < 2) {
            finish();
            return;
        }

        var last = inertia[inertia.length - 1],
            first = inertia[0],
            flingOffset = last[1].sub(first[1]),
            flingDuration = (last[0] - first[0]) / 1000;

        if (flingDuration === 0 || last[1].equals(first[1])) {
            finish();
            return;
        }

        // calculate px/s velocity & adjust for increased initial animation speed when easing out
        var velocity = flingOffset.mult(inertiaLinearity / flingDuration),
            speed = velocity.mag(); // px/s

        if (speed > inertiaMaxSpeed) {
            speed = inertiaMaxSpeed;
            velocity._unit()._mult(speed);
        }

        var duration = speed / (inertiaDeceleration * inertiaLinearity),
            offset = velocity.mult(-duration / 2);

        this._map.panBy(offset, {
            duration: duration * 1000,
            easing: inertiaEasing,
            noMoveStart: true
        }, { originalEvent: e });
    },

    _onMouseUp: function (e) {
        if (this._ignoreEvent(e)) return;
        this._onUp(e);
        document.removeEventListener('mousemove', this._onMove);
        document.removeEventListener('mouseup', this._onMouseUp);
    },

    _onTouchEnd: function (e) {
        if (this._ignoreEvent(e)) return;
        this._onUp(e);
        document.removeEventListener('touchmove', this._onMove);
        document.removeEventListener('touchend', this._onTouchEnd);
    },

    _fireEvent: function (type, e) {
        return this._map.fire(type, { originalEvent: e });
    },

    _ignoreEvent: function (e) {
        var map = this._map;

        if (map.boxZoom && map.boxZoom.isActive()) return true;
        if (map.dragRotate && map.dragRotate.isActive()) return true;
        if (e.touches) {
            return (e.touches.length > 1);
        } else {
            if (e.ctrlKey) return true;
            var buttons = 1,  // left button
                button = 0;   // left button
            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
        }
    },

    _drainInertiaBuffer: function () {
        var inertia = this._inertia,
            now = Date.now(),
            cutoff = 160;   // msec

        while (inertia.length > 0 && now - inertia[0][0] > cutoff) inertia.shift();
    }
};


/**
 * Fired when a "drag to pan" interaction starts. See [`DragPanHandler`](#DragPanHandler).
 *
 * @event dragstart
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired repeatedly during a "drag to pan" interaction. See [`DragPanHandler`](#DragPanHandler).
 *
 * @event drag
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired when a "drag to pan" interaction ends. See [`DragPanHandler`](#DragPanHandler).
 *
 * @event dragend
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

},{"../../util/dom":404,"../../util/util":418}],392:[function(require,module,exports){
'use strict';

var DOM = require('../../util/dom'),
    Point = require('point-geometry'),
    util = require('../../util/util');

module.exports = DragRotateHandler;

var inertiaLinearity = 0.25,
    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
    inertiaMaxSpeed = 180, // deg/s
    inertiaDeceleration = 720; // deg/s^2


/**
 * The `DragRotateHandler` allows the user to rotate the map by clicking and
 * dragging the cursor while holding the right mouse button or `ctrl` key.
 *
 * @class DragRotateHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 * @param {Object} [options]
 * @param {number} [options.bearingSnap] The threshold, measured in degrees, that determines when the map's
 *   bearing (rotation) will snap to north.
 */
function DragRotateHandler(map, options) {
    this._map = map;
    this._el = map.getCanvasContainer();
    this._bearingSnap = options.bearingSnap;

    util.bindHandlers(this);
}

DragRotateHandler.prototype = {

    _enabled: false,
    _active: false,

    /**
     * Returns a Boolean indicating whether the "drag to rotate" interaction is enabled.
     *
     * @returns {boolean} `true` if the "drag to rotate" interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Returns a Boolean indicating whether the "drag to rotate" interaction is active, i.e. currently being used.
     *
     * @returns {boolean} `true` if the "drag to rotate" interaction is active.
     */
    isActive: function () {
        return this._active;
    },

    /**
     * Enables the "drag to rotate" interaction.
     *
     * @example
     * map.dragRotate.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._el.addEventListener('mousedown', this._onDown);
        this._enabled = true;
    },

    /**
     * Disables the "drag to rotate" interaction.
     *
     * @example
     * map.dragRotate.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._el.removeEventListener('mousedown', this._onDown);
        this._enabled = false;
    },

    _onDown: function (e) {
        if (this._ignoreEvent(e)) return;
        if (this.isActive()) return;

        document.addEventListener('mousemove', this._onMove);
        document.addEventListener('mouseup', this._onUp);

        this._active = false;
        this._inertia = [[Date.now(), this._map.getBearing()]];
        this._startPos = this._pos = DOM.mousePos(this._el, e);
        this._center = this._map.transform.centerPoint;  // Center of rotation

        // If the first click was too close to the center, move the center of rotation by 200 pixels
        // in the direction of the click.
        var startToCenter = this._startPos.sub(this._center),
            startToCenterDist = startToCenter.mag();

        if (startToCenterDist < 200) {
            this._center = this._startPos.add(new Point(-200, 0)._rotate(startToCenter.angle()));
        }

        e.preventDefault();
    },

    _onMove: function (e) {
        if (this._ignoreEvent(e)) return;

        if (!this.isActive()) {
            this._active = true;
            this._fireEvent('rotatestart', e);
            this._fireEvent('movestart', e);
        }

        var map = this._map;
        map.stop();

        var p1 = this._pos,
            p2 = DOM.mousePos(this._el, e),
            center = this._center,
            bearingDiff = p1.sub(center).angleWith(p2.sub(center)) / Math.PI * 180,
            bearing = map.getBearing() - bearingDiff,
            inertia = this._inertia,
            last = inertia[inertia.length - 1];

        this._drainInertiaBuffer();
        inertia.push([Date.now(), map._normalizeBearing(bearing, last[1])]);

        map.transform.bearing = bearing;

        this._fireEvent('rotate', e);
        this._fireEvent('move', e);

        this._pos = p2;
    },

    _onUp: function (e) {
        if (this._ignoreEvent(e)) return;
        document.removeEventListener('mousemove', this._onMove);
        document.removeEventListener('mouseup', this._onUp);

        if (!this.isActive()) return;

        this._active = false;
        this._fireEvent('rotateend', e);
        this._drainInertiaBuffer();

        var map = this._map,
            mapBearing = map.getBearing(),
            inertia = this._inertia;

        var finish = function() {
            if (Math.abs(mapBearing) < this._bearingSnap) {
                map.resetNorth({noMoveStart: true}, { originalEvent: e });
            } else {
                this._fireEvent('moveend', e);
            }
        }.bind(this);

        if (inertia.length < 2) {
            finish();
            return;
        }

        var first = inertia[0],
            last = inertia[inertia.length - 1],
            previous = inertia[inertia.length - 2],
            bearing = map._normalizeBearing(mapBearing, previous[1]),
            flingDiff = last[1] - first[1],
            sign = flingDiff < 0 ? -1 : 1,
            flingDuration = (last[0] - first[0]) / 1000;

        if (flingDiff === 0 || flingDuration === 0) {
            finish();
            return;
        }

        var speed = Math.abs(flingDiff * (inertiaLinearity / flingDuration));  // deg/s
        if (speed > inertiaMaxSpeed) {
            speed = inertiaMaxSpeed;
        }

        var duration = speed / (inertiaDeceleration * inertiaLinearity),
            offset = sign * speed * (duration / 2);

        bearing += offset;

        if (Math.abs(map._normalizeBearing(bearing, 0)) < this._bearingSnap) {
            bearing = map._normalizeBearing(0, bearing);
        }

        map.rotateTo(bearing, {
            duration: duration * 1000,
            easing: inertiaEasing,
            noMoveStart: true
        }, { originalEvent: e });
    },

    _fireEvent: function (type, e) {
        return this._map.fire(type, { originalEvent: e });
    },

    _ignoreEvent: function (e) {
        var map = this._map;

        if (map.boxZoom && map.boxZoom.isActive()) return true;
        if (map.dragPan && map.dragPan.isActive()) return true;
        if (e.touches) {
            return (e.touches.length > 1);
        } else {
            var buttons = (e.ctrlKey ? 1 : 2),  // ? ctrl+left button : right button
                button = (e.ctrlKey ? 0 : 2);   // ? ctrl+left button : right button
            return (e.type === 'mousemove' ? e.buttons & buttons === 0 : e.button !== button);
        }
    },

    _drainInertiaBuffer: function () {
        var inertia = this._inertia,
            now = Date.now(),
            cutoff = 160;   //msec

        while (inertia.length > 0 && now - inertia[0][0] > cutoff)
            inertia.shift();
    }

};


/**
 * Fired when a "drag to rotate" interaction starts. See [`DragRotateHandler`](#DragRotateHandler).
 *
 * @event rotatestart
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired repeatedly during a "drag to rotate" interaction. See [`DragRotateHandler`](#DragRotateHandler).
 *
 * @event rotate
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired when a "drag to rotate" interaction ends. See [`DragRotateHandler`](#DragRotateHandler).
 *
 * @event rotateend
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

},{"../../util/dom":404,"../../util/util":418,"point-geometry":919}],393:[function(require,module,exports){
'use strict';

module.exports = KeyboardHandler;


var panDelta = 80,
    rotateDelta = 2,
    pitchDelta = 5;

/**
 * The `KeyboardHandler` allows the user to zoom, rotate, and pan the map using
 * the following keyboard shortcuts:
 *
 * - `=` / `+`: Increase the zoom level by 1.
 * - `Shift-=` / `Shift-+`: Increase the zoom level by 2.
 * - `-`: Decrease the zoom level by 1.
 * - `Shift--`: Decrease the zoom level by 2.
 * - Arrow keys: Pan by 80 pixels.
 * - `Shift+⇢`: Increase the rotation by 2 degrees.
 * - `Shift+⇠`: Decrease the rotation by 2 degrees.
 * - `Shift+⇡`: Increase the pitch by 5 degrees.
 * - `Shift+⇣`: Decrease the pitch by 5 degrees.
 *
 * @class KeyboardHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 */
function KeyboardHandler(map) {
    this._map = map;
    this._el = map.getCanvasContainer();

    this._onKeyDown = this._onKeyDown.bind(this);
}

KeyboardHandler.prototype = {

    _enabled: false,

    /**
     * Returns a Boolean indicating whether keyboard interaction is enabled.
     *
     * @returns {boolean} `true` if keyboard interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Enables keyboard interaction.
     *
     * @example
     * map.keyboard.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._el.addEventListener('keydown', this._onKeyDown, false);
        this._enabled = true;
    },

    /**
     * Disables keyboard interaction.
     *
     * @example
     * map.keyboard.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._el.removeEventListener('keydown', this._onKeyDown);
        this._enabled = false;
    },

    _onKeyDown: function (e) {
        if (e.altKey || e.ctrlKey || e.metaKey) return;

        var map = this._map,
            eventData = { originalEvent: e };

        if (map.isEasing()) return;

        switch (e.keyCode) {
        case 61:
        case 107:
        case 171:
        case 187:
            map.zoomTo(Math.round(map.getZoom()) + (e.shiftKey ? 2 : 1), eventData);
            break;

        case 189:
        case 109:
        case 173:
            map.zoomTo(Math.round(map.getZoom()) - (e.shiftKey ? 2 : 1), eventData);
            break;

        case 37:
            if (e.shiftKey) {
                map.easeTo({ bearing: map.getBearing() - rotateDelta }, eventData);
            } else {
                e.preventDefault();
                map.panBy([-panDelta, 0], eventData);
            }
            break;

        case 39:
            if (e.shiftKey) {
                map.easeTo({ bearing: map.getBearing() + rotateDelta }, eventData);
            } else {
                e.preventDefault();
                map.panBy([panDelta, 0], eventData);
            }
            break;

        case 38:
            if (e.shiftKey) {
                map.easeTo({ pitch: map.getPitch() + pitchDelta }, eventData);
            } else {
                e.preventDefault();
                map.panBy([0, -panDelta], eventData);
            }
            break;

        case 40:
            if (e.shiftKey) {
                map.easeTo({ pitch: Math.max(map.getPitch() - pitchDelta, 0) }, eventData);
            } else {
                e.preventDefault();
                map.panBy([0, panDelta], eventData);
            }
            break;
        }
    }
};

},{}],394:[function(require,module,exports){
'use strict';

var DOM = require('../../util/dom'),
    browser = require('../../util/browser'),
    util = require('../../util/util');

module.exports = ScrollZoomHandler;


var ua = typeof navigator !== 'undefined' ? navigator.userAgent.toLowerCase() : '',
    firefox = ua.indexOf('firefox') !== -1,
    safari = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') === -1;


/**
 * The `ScrollZoomHandler` allows the user to zoom the map by scrolling.
 *
 * @class ScrollZoomHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 */
function ScrollZoomHandler(map) {
    this._map = map;
    this._el = map.getCanvasContainer();

    util.bindHandlers(this);
}

ScrollZoomHandler.prototype = {

    _enabled: false,

    /**
     * Returns a Boolean indicating whether the "scroll to zoom" interaction is enabled.
     *
     * @returns {boolean} `true` if the "scroll to zoom" interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Enables the "scroll to zoom" interaction.
     *
     * @example
     *   map.scrollZoom.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._el.addEventListener('wheel', this._onWheel, false);
        this._el.addEventListener('mousewheel', this._onWheel, false);
        this._enabled = true;
    },

    /**
     * Disables the "scroll to zoom" interaction.
     *
     * @example
     *   map.scrollZoom.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._el.removeEventListener('wheel', this._onWheel);
        this._el.removeEventListener('mousewheel', this._onWheel);
        this._enabled = false;
    },

    _onWheel: function (e) {
        var value;

        if (e.type === 'wheel') {
            value = e.deltaY;
            // Firefox doubles the values on retina screens...
            if (firefox && e.deltaMode === window.WheelEvent.DOM_DELTA_PIXEL) value /= browser.devicePixelRatio;
            if (e.deltaMode === window.WheelEvent.DOM_DELTA_LINE) value *= 40;

        } else if (e.type === 'mousewheel') {
            value = -e.wheelDeltaY;
            if (safari) value = value / 3;
        }

        var now = browser.now(),
            timeDelta = now - (this._time || 0);

        this._pos = DOM.mousePos(this._el, e);
        this._time = now;

        if (value !== 0 && (value % 4.000244140625) === 0) {
            // This one is definitely a mouse wheel event.
            this._type = 'wheel';
            // Normalize this value to match trackpad.
            value = Math.floor(value / 4);

        } else if (value !== 0 && Math.abs(value) < 4) {
            // This one is definitely a trackpad event because it is so small.
            this._type = 'trackpad';

        } else if (timeDelta > 400) {
            // This is likely a new scroll action.
            this._type = null;
            this._lastValue = value;

            // Start a timeout in case this was a singular event, and dely it by up to 40ms.
            this._timeout = setTimeout(this._onTimeout, 40);

        } else if (!this._type) {
            // This is a repeating event, but we don't know the type of event just yet.
            // If the delta per time is small, we assume it's a fast trackpad; otherwise we switch into wheel mode.
            this._type = (Math.abs(timeDelta * value) < 200) ? 'trackpad' : 'wheel';

            // Make sure our delayed event isn't fired again, because we accumulate
            // the previous event (which was less than 40ms ago) into this event.
            if (this._timeout) {
                clearTimeout(this._timeout);
                this._timeout = null;
                value += this._lastValue;
            }
        }

        // Slow down zoom if shift key is held for more precise zooming
        if (e.shiftKey && value) value = value / 4;

        // Only fire the callback if we actually know what type of scrolling device the user uses.
        if (this._type) this._zoom(-value, e);

        e.preventDefault();
    },

    _onTimeout: function () {
        this._type = 'wheel';
        this._zoom(-this._lastValue);
    },

    _zoom: function (delta, e) {
        if (delta === 0) return;
        var map = this._map;

        // Scale by sigmoid of scroll wheel delta.
        var scale = 2 / (1 + Math.exp(-Math.abs(delta / 100)));
        if (delta < 0 && scale !== 0) scale = 1 / scale;

        var fromScale = map.ease ? map.ease.to : map.transform.scale,
            targetZoom = map.transform.scaleZoom(fromScale * scale);

        map.zoomTo(targetZoom, {
            duration: 0,
            around: map.unproject(this._pos),
            delayEndEvents: 200
        }, { originalEvent: e });
    }
};


/**
 * Fired just before the map begins a transition from one zoom level to another,
 * as the result of either user interaction or methods such as [Map#flyTo](#Map#flyTo).
 *
 * @event zoomstart
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired repeatedly during an animated transition from one zoom level to another,
 * as the result of either user interaction or methods such as [Map#flyTo](#Map#flyTo).
 *
 * @event zoom
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired just after the map completes a transition from one zoom level to another,
 * as the result of either user interaction or methods such as [Map#flyTo](#Map#flyTo).
 *
 * @event zoomend
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

},{"../../util/browser":402,"../../util/dom":404,"../../util/util":418}],395:[function(require,module,exports){
'use strict';

var DOM = require('../../util/dom'),
    util = require('../../util/util');

module.exports = TouchZoomRotateHandler;

var inertiaLinearity = 0.15,
    inertiaEasing = util.bezier(0, 0, inertiaLinearity, 1),
    inertiaDeceleration = 12, // scale / s^2
    inertiaMaxSpeed = 2.5, // scale / s
    significantScaleThreshold = 0.15,
    significantRotateThreshold = 4;


/**
 * The `TouchZoomRotateHandler` allows the user to zoom and rotate the map by
 * pinching on a touchscreen.
 *
 * @class TouchZoomRotateHandler
 * @param {Map} map The Mapbox GL JS map to add the handler to.
 */
function TouchZoomRotateHandler(map) {
    this._map = map;
    this._el = map.getCanvasContainer();

    util.bindHandlers(this);
}

TouchZoomRotateHandler.prototype = {

    _enabled: false,

    /**
     * Returns a Boolean indicating whether the "pinch to rotate and zoom" interaction is enabled.
     *
     * @returns {boolean} `true` if the "pinch to rotate and zoom" interaction is enabled.
     */
    isEnabled: function () {
        return this._enabled;
    },

    /**
     * Enables the "pinch to rotate and zoom" interaction.
     *
     * @example
     *   map.touchZoomRotate.enable();
     */
    enable: function () {
        if (this.isEnabled()) return;
        this._el.addEventListener('touchstart', this._onStart, false);
        this._enabled = true;
    },

    /**
     * Disables the "pinch to rotate and zoom" interaction.
     *
     * @example
     *   map.touchZoomRotate.disable();
     */
    disable: function () {
        if (!this.isEnabled()) return;
        this._el.removeEventListener('touchstart', this._onStart);
        this._enabled = false;
    },

    /**
     * Disables the "pinch to rotate" interaction, leaving the "pinch to zoom"
     * interaction enabled.
     *
     * @example
     *   map.touchZoomRotate.disableRotation();
     */
    disableRotation: function() {
        this._rotationDisabled = true;
    },

    /**
     * Enables the "pinch to rotate" interaction.
     *
     * @example
     *   map.touchZoomRotate.enable();
     *   map.touchZoomRotate.enableRotation();
     */
    enableRotation: function() {
        this._rotationDisabled = false;
    },

    _onStart: function (e) {
        if (e.touches.length !== 2) return;

        var p0 = DOM.mousePos(this._el, e.touches[0]),
            p1 = DOM.mousePos(this._el, e.touches[1]);

        this._startVec = p0.sub(p1);
        this._startScale = this._map.transform.scale;
        this._startBearing = this._map.transform.bearing;
        this._gestureIntent = undefined;
        this._inertia = [];

        document.addEventListener('touchmove', this._onMove, false);
        document.addEventListener('touchend', this._onEnd, false);
    },

    _onMove: function (e) {
        if (e.touches.length !== 2) return;

        var p0 = DOM.mousePos(this._el, e.touches[0]),
            p1 = DOM.mousePos(this._el, e.touches[1]),
            p = p0.add(p1).div(2),
            vec = p0.sub(p1),
            scale = vec.mag() / this._startVec.mag(),
            bearing = this._rotationDisabled ? 0 : vec.angleWith(this._startVec) * 180 / Math.PI,
            map = this._map;

        // Determine 'intent' by whichever threshold is surpassed first,
        // then keep that state for the duration of this gesture.
        if (!this._gestureIntent) {
            var scalingSignificantly = (Math.abs(1 - scale) > significantScaleThreshold),
                rotatingSignificantly = (Math.abs(bearing) > significantRotateThreshold);

            if (rotatingSignificantly) {
                this._gestureIntent = 'rotate';
            } else if (scalingSignificantly) {
                this._gestureIntent = 'zoom';
            }

            if (this._gestureIntent) {
                this._startVec = vec;
                this._startScale = map.transform.scale;
                this._startBearing = map.transform.bearing;
            }

        } else {
            var param = { duration: 0, around: map.unproject(p) };

            if (this._gestureIntent === 'rotate') {
                param.bearing = this._startBearing + bearing;
            }
            if (this._gestureIntent === 'zoom' || this._gestureIntent === 'rotate') {
                param.zoom = map.transform.scaleZoom(this._startScale * scale);
            }

            map.stop();
            this._drainInertiaBuffer();
            this._inertia.push([Date.now(), scale, p]);

            map.easeTo(param, { originalEvent: e });
        }

        e.preventDefault();
    },

    _onEnd: function (e) {
        document.removeEventListener('touchmove', this._onMove);
        document.removeEventListener('touchend', this._onEnd);
        this._drainInertiaBuffer();

        var inertia = this._inertia,
            map = this._map;

        if (inertia.length < 2) {
            map.snapToNorth({}, { originalEvent: e });
            return;
        }

        var last = inertia[inertia.length - 1],
            first = inertia[0],
            lastScale = map.transform.scaleZoom(this._startScale * last[1]),
            firstScale = map.transform.scaleZoom(this._startScale * first[1]),
            scaleOffset = lastScale - firstScale,
            scaleDuration = (last[0] - first[0]) / 1000,
            p = last[2];

        if (scaleDuration === 0 || lastScale === firstScale) {
            map.snapToNorth({}, { originalEvent: e });
            return;
        }

        // calculate scale/s speed and adjust for increased initial animation speed when easing
        var speed = scaleOffset * inertiaLinearity / scaleDuration; // scale/s

        if (Math.abs(speed) > inertiaMaxSpeed) {
            if (speed > 0) {
                speed = inertiaMaxSpeed;
            } else {
                speed = -inertiaMaxSpeed;
            }
        }

        var duration = Math.abs(speed / (inertiaDeceleration * inertiaLinearity)) * 1000,
            targetScale = lastScale + speed * duration / 2000;

        if (targetScale < 0) {
            targetScale = 0;
        }

        map.easeTo({
            zoom: targetScale,
            duration: duration,
            easing: inertiaEasing,
            around: map.unproject(p)
        }, { originalEvent: e });
    },

    _drainInertiaBuffer: function() {
        var inertia = this._inertia,
            now = Date.now(),
            cutoff = 160; // msec

        while (inertia.length > 2 && now - inertia[0][0] > cutoff) inertia.shift();
    }
};

},{"../../util/dom":404,"../../util/util":418}],396:[function(require,module,exports){
'use strict';

/*
 * Adds the map's position to its page's location hash.
 * Passed as an option to the map object.
 *
 * @class mapboxgl.Hash
 * @returns {Hash} `this`
 */
module.exports = Hash;

var util = require('../util/util');

function Hash() {
    util.bindAll([
        '_onHashChange',
        '_updateHash'
    ], this);
}

Hash.prototype = {
    /*
     * Map element to listen for coordinate changes
     *
     * @param {Object} map
     * @returns {Hash} `this`
     */
    addTo: function(map) {
        this._map = map;
        window.addEventListener('hashchange', this._onHashChange, false);
        this._map.on('moveend', this._updateHash);
        return this;
    },

    /*
     * Removes hash
     *
     * @returns {Popup} `this`
     */
    remove: function() {
        window.removeEventListener('hashchange', this._onHashChange, false);
        this._map.off('moveend', this._updateHash);
        delete this._map;
        return this;
    },

    _onHashChange: function() {
        var loc = location.hash.replace('#', '').split('/');
        if (loc.length >= 3) {
            this._map.jumpTo({
                center: [+loc[2], +loc[1]],
                zoom: +loc[0],
                bearing: +(loc[3] || 0)
            });
            return true;
        }
        return false;
    },

    _updateHash: function() {
        var center = this._map.getCenter(),
            zoom = this._map.getZoom(),
            bearing = this._map.getBearing(),
            precision = Math.max(0, Math.ceil(Math.log(zoom) / Math.LN2)),

            hash = '#' + (Math.round(zoom * 100) / 100) +
                '/' + center.lat.toFixed(precision) +
                '/' + center.lng.toFixed(precision) +
                (bearing ? '/' + (Math.round(bearing * 10) / 10) : '');

        window.history.replaceState('', '', hash);
    }
};

},{"../util/util":418}],397:[function(require,module,exports){
'use strict';

var Canvas = require('../util/canvas');
var util = require('../util/util');
var browser = require('../util/browser');
var window = require('../util/browser').window;
var Evented = require('../util/evented');
var DOM = require('../util/dom');

var Style = require('../style/style');
var AnimationLoop = require('../style/animation_loop');
var Painter = require('../render/painter');

var Transform = require('../geo/transform');
var Hash = require('./hash');

var bindHandlers = require('./bind_handlers');

var Camera = require('./camera');
var LngLat = require('../geo/lng_lat');
var LngLatBounds = require('../geo/lng_lat_bounds');
var Point = require('point-geometry');
var Attribution = require('./control/attribution');

var defaultMinZoom = 0;
var defaultMaxZoom = 20;
var defaultOptions = {
    center: [0, 0],
    zoom: 0,
    bearing: 0,
    pitch: 0,

    minZoom: defaultMinZoom,
    maxZoom: defaultMaxZoom,

    interactive: true,

    scrollZoom: true,
    boxZoom: true,
    dragRotate: true,
    dragPan: true,
    keyboard: true,
    doubleClickZoom: true,
    touchZoomRotate: true,

    bearingSnap: 7,

    hash: false,

    attributionControl: true,

    failIfMajorPerformanceCaveat: false,
    preserveDrawingBuffer: false,

    trackResize: true,
    workerCount: Math.max(browser.hardwareConcurrency - 1, 1)
};

/**
 * The `Map` object represents the map on your page. It exposes methods
 * and properties that enable you to programmatically change the map,
 * and fires events as users interact with it.
 *
 * You create a `Map` by specifying a `container` and other options.
 * Then Mapbox GL JS initializes the map on the page and returns your `Map`
 * object.
 *
 * The `Map` class mixes in [`Evented`](#Evented) methods.
 *
 * @class Map
 * @param {Object} options
 * @param {HTMLElement|string} options.container The HTML element in which Mapbox GL JS will render the map, or the element's string `id`.
 * @param {number} [options.minZoom=0] The minimum zoom level of the map (1-20).
 * @param {number} [options.maxZoom=20] The maximum zoom level of the map (1-20).
 * @param {Object|string} [options.style] The map's Mapbox style. This must be an a JSON object conforming to
 * the schema described in the [Mapbox Style Specification](https://mapbox.com/mapbox-gl-style-spec/), or a URL to
 * such JSON.
 *
 * To load a style from the Mapbox API, you can use a URL of the form `mapbox://styles/:owner/:style`,
 * where `:owner` is your Mapbox account name and `:style` is the style ID. Or you can use one of the following
 * [the predefined Mapbox styles](https://www.mapbox.com/maps/):
 *
 *  * `mapbox://styles/mapbox/streets-v9`
 *  * `mapbox://styles/mapbox/outdoors-v9`
 *  * `mapbox://styles/mapbox/light-v9`
 *  * `mapbox://styles/mapbox/dark-v9`
 *  * `mapbox://styles/mapbox/satellite-v9`
 *  * `mapbox://styles/mapbox/satellite-streets-v9`
 *
 * @param {boolean} [options.hash=false] If `true`, the map's position (zoom, center latitude, center longitude, and bearing) will be synced with the hash fragment of the page's URL.
 *   For example, `http://path/to/my/page.html#2.59/39.26/53.07/-24.1`.
 * @param {boolean} [options.interactive=true] If `false`, no mouse, touch, or keyboard listeners will be attached to the map, so it will not respond to interaction.
 * @param {number} [options.bearingSnap=7] The threshold, measured in degrees, that determines when the map's
 *   bearing (rotation) will snap to north. For example, with a `bearingSnap` of 7, if the user rotates
 *   the map within 7 degrees of north, the map will automatically snap to exact north.
 * @param {Array<string>} [options.classes] Mapbox style class names with which to initialize the map.
 *   Keep in mind that these classes are used for controlling a style layer's paint properties, so are *not* reflected
 *   in an HTML element's `class` attribute. To learn more about Mapbox style classes, read about
 *   [Layers](https://www.mapbox.com/mapbox-gl-style-spec/#layers) in the style specification.
 * @param {boolean} [options.attributionControl=true] If `true`, an [Attribution](#Attribution) control will be added to the map.
 * @param {boolean} [options.failIfMajorPerformanceCaveat=false] If `true`, map creation will fail if the performance of Mapbox
 *   GL JS would be dramatically worse than expected (i.e. a software renderer would be used).
 * @param {boolean} [options.preserveDrawingBuffer=false] If `true`, the map's canvas can be exported to a PNG using `map.getCanvas().toDataURL()`. This is `false` by default as a performance optimization.
 * @param {LngLatBoundsLike} [options.maxBounds] If set, the map will be constrained to the given bounds.
 * @param {boolean} [options.scrollZoom=true] If `true`, the "scroll to zoom" interaction is enabled (see [`ScrollZoomHandler`](#ScrollZoomHandler)).
 * @param {boolean} [options.boxZoom=true] If `true`, the "box zoom" interaction is enabled (see [`BoxZoomHandler`](#BoxZoomHandler)).
 * @param {boolean} [options.dragRotate=true] If `true`, the "drag to rotate" interaction is enabled (see [`DragRotateHandler`](#DragRotateHandler)).
 * @param {boolean} [options.dragPan=true] If `true`, the "drag to pan" interaction is enabled (see [`DragPanHandler`](#DragPanHandler)).
 * @param {boolean} [options.keyboard=true] If `true`, keyboard shortcuts are enabled (see [`KeyboardHandler`](#KeyboardHandler)).
 * @param {boolean} [options.doubleClickZoom=true] If `true`, the "double click to zoom" interaction is enabled (see [`DoubleClickZoomHandler`](#DoubleClickZoomHandler)).
 * @param {boolean} [options.touchZoomRotate=true] If `true`, the "pinch to rotate and zoom" interaction is enabled (see [`TouchZoomRotateHandler`](#TouchZoomRotateHandler)).
 * @param {boolean} [options.trackResize=true]  If `true`, the map will automatically resize when the browser window resizes.
 * @param {LngLatLike} [options.center=[0, 0]] The inital geographical centerpoint of the map. If `center` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `[0, 0]`.
 * @param {number} [options.zoom=0] The initial zoom level of the map. If `zoom` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `0`.
 * @param {number} [options.bearing=0] The initial bearing (rotation) of the map, measured in degrees counter-clockwise from north. If `bearing` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `0`.
 * @param {number} [options.pitch=0] The initial pitch (tilt) of the map, measured in degrees away from the plane of the screen (0-60). If `pitch` is not specified in the constructor options, Mapbox GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to `0`.
 * @param {number} [options.workerCount=navigator.hardwareConcurrency - 1] The number of WebWorkers that Mapbox GL JS should use to process vector tile data.
 * @example
 * var map = new mapboxgl.Map({
 *   container: 'map',
 *   center: [-122.420679, 37.772537],
 *   zoom: 13,
 *   style: style_object,
 *   hash: true
 * });
 */
var Map = module.exports = function(options) {

    options = util.extend({}, defaultOptions, options);

    if (options.workerCount < 1) {
        throw new Error('workerCount must an integer greater than or equal to 1.');
    }

    this._interactive = options.interactive;
    this._failIfMajorPerformanceCaveat = options.failIfMajorPerformanceCaveat;
    this._preserveDrawingBuffer = options.preserveDrawingBuffer;
    this._trackResize = options.trackResize;
    this._workerCount = options.workerCount;
    this._bearingSnap = options.bearingSnap;

    if (typeof options.container === 'string') {
        this._container = document.getElementById(options.container);
    } else {
        this._container = options.container;
    }

    this.animationLoop = new AnimationLoop();
    this.transform = new Transform(options.minZoom, options.maxZoom);

    if (options.maxBounds) {
        this.setMaxBounds(options.maxBounds);
    }

    util.bindAll([
        '_forwardStyleEvent',
        '_forwardSourceEvent',
        '_forwardLayerEvent',
        '_forwardTileEvent',
        '_onStyleLoad',
        '_onStyleChange',
        '_onSourceAdd',
        '_onSourceRemove',
        '_onSourceUpdate',
        '_onWindowOnline',
        '_onWindowResize',
        '_update',
        '_render'
    ], this);

    this._setupContainer();
    this._setupPainter();

    this.on('move', this._update.bind(this, false));
    this.on('zoom', this._update.bind(this, true));
    this.on('moveend', function() {
        this.animationLoop.set(300); // text fading
        this._rerender();
    }.bind(this));

    if (typeof window !== 'undefined') {
        window.addEventListener('online', this._onWindowOnline, false);
        window.addEventListener('resize', this._onWindowResize, false);
    }

    bindHandlers(this, options);

    this._hash = options.hash && (new Hash()).addTo(this);
    // don't set position from options if set through hash
    if (!this._hash || !this._hash._onHashChange()) {
        this.jumpTo({
            center: options.center,
            zoom: options.zoom,
            bearing: options.bearing,
            pitch: options.pitch
        });
    }

    this.stacks = {};
    this._classes = [];

    this.resize();

    if (options.classes) this.setClasses(options.classes);
    if (options.style) this.setStyle(options.style);
    if (options.attributionControl) this.addControl(new Attribution(options.attributionControl));

    var fireError = this.fire.bind(this, 'error');
    this.on('style.error', fireError);
    this.on('source.error', fireError);
    this.on('tile.error', fireError);
    this.on('layer.error', fireError);
};

util.extend(Map.prototype, Evented);
util.extend(Map.prototype, Camera.prototype);
util.extend(Map.prototype, /** @lends Map.prototype */{

    /**
     * Adds a [`Control`](#Control) to the map, calling `control.addTo(this)`.
     *
     * @param {Control} control The [`Control`](#Control) to add.
     * @returns {Map} `this`
     */
    addControl: function(control) {
        control.addTo(this);
        return this;
    },

    /**
     * Adds a Mapbox style class to the map.
     *
     * Keep in mind that these classes are used for controlling a style layer's paint properties, so are *not* reflected
     * in an HTML element's `class` attribute. To learn more about Mapbox style classes, read about
     * [Layers](https://www.mapbox.com/mapbox-gl-style-spec/#layers) in the style specification.
     *
     * @param {string} klass The style class to add.
     * @param {StyleOptions} [options]
     * @fires change
     * @returns {Map} `this`
     */
    addClass: function(klass, options) {
        if (this._classes.indexOf(klass) >= 0 || klass === '') return this;
        this._classes.push(klass);
        this._classOptions = options;

        if (this.style) this.style.updateClasses();
        return this._update(true);
    },

    /**
     * Removes a Mapbox style class from the map.
     *
     * @param {string} klass The style class to remove.
     * @param {StyleOptions} [options]
     * @fires change
     * @returns {Map} `this`
     */
    removeClass: function(klass, options) {
        var i = this._classes.indexOf(klass);
        if (i < 0 || klass === '') return this;
        this._classes.splice(i, 1);
        this._classOptions = options;

        if (this.style) this.style.updateClasses();
        return this._update(true);
    },

    /**
     * Replaces the map's existing Mapbox style classes with a new array of classes.
     *
     * @param {Array<string>} klasses The style classes to set.
     * @param {StyleOptions} [options]
     * @fires change
     * @returns {Map} `this`
     */
    setClasses: function(klasses, options) {
        var uniqueClasses = {};
        for (var i = 0; i < klasses.length; i++) {
            if (klasses[i] !== '') uniqueClasses[klasses[i]] = true;
        }
        this._classes = Object.keys(uniqueClasses);
        this._classOptions = options;

        if (this.style) this.style.updateClasses();
        return this._update(true);
    },

    /**
     * Returns a Boolean indicating whether the map has the
     * specified Mapbox style class.
     *
     * @param {string} klass The style class to test.
     * @returns {boolean} `true` if the map has the specified style class.
     */
    hasClass: function(klass) {
        return this._classes.indexOf(klass) >= 0;
    },

    /**
     * Returns the map's Mapbox style classes.
     *
     * @returns {Array<string>} The map's style classes.
     */
    getClasses: function() {
        return this._classes;
    },

    /**
     * Resizes the map according to the dimensions of its
     * `container` element.
     *
     * This method must be called after the map's `container` is resized by another script,
     * or when the map is shown after being initially hidden with CSS.
     *
     * @returns {Map} `this`
     */
    resize: function() {
        var width = 0, height = 0;

        if (this._container) {
            width = this._container.offsetWidth || 400;
            height = this._container.offsetHeight || 300;
        }

        this._canvas.resize(width, height);
        this.transform.resize(width, height);
        this.painter.resize(width, height);

        return this
            .fire('movestart')
            .fire('move')
            .fire('resize')
            .fire('moveend');
    },

    /**
     * Returns the map's geographical bounds.
     *
     * @returns {LngLatBounds} The map's geographical bounds.
     */
    getBounds: function() {
        var bounds = new LngLatBounds(
            this.transform.pointLocation(new Point(0, 0)),
            this.transform.pointLocation(this.transform.size));

        if (this.transform.angle || this.transform.pitch) {
            bounds.extend(this.transform.pointLocation(new Point(this.transform.size.x, 0)));
            bounds.extend(this.transform.pointLocation(new Point(0, this.transform.size.y)));
        }

        return bounds;
    },

    /**
     * Sets or clears the map's geographical bounds.
     *
     * Pan and zoom operations are constrained within these bounds.
     * If a pan or zoom is performed that would
     * display regions outside these bounds, the map will
     * instead display a position and zoom level
     * as close as possible to the operation's request while still
     * remaining within the bounds.
     *
     * @param {LngLatBoundsLike | null | undefined} lnglatbounds The maximum bounds to set. If `null` or `undefined` is provided, the function removes the map's maximum bounds.
     * @returns {Map} `this`
     */
    setMaxBounds: function (lnglatbounds) {
        if (lnglatbounds) {
            var b = LngLatBounds.convert(lnglatbounds);
            this.transform.lngRange = [b.getWest(), b.getEast()];
            this.transform.latRange = [b.getSouth(), b.getNorth()];
            this.transform._constrain();
            this._update();
        } else if (lnglatbounds === null || lnglatbounds === undefined) {
            this.transform.lngRange = [];
            this.transform.latRange = [];
            this._update();
        }
        return this;

    },
    /**
     * Sets or clears the map's minimum zoom level.
     * If the map's current zoom level is lower than the new minimum,
     * the map will zoom to the new minimum.
     *
     * @param {?number} minZoom The minimum zoom level to set (0-20).
     *   If `null` or `undefined` is provided, the function removes the current minimum zoom (i.e. sets it to 0).
     * @returns {Map} `this`
     */
    setMinZoom: function(minZoom) {

        minZoom = minZoom === null || minZoom === undefined ? defaultMinZoom : minZoom;

        if (minZoom >= defaultMinZoom && minZoom <= this.transform.maxZoom) {
            this.transform.minZoom = minZoom;
            this._update();

            if (this.getZoom() < minZoom) this.setZoom(minZoom);

            return this;

        } else throw new Error('minZoom must be between ' + defaultMinZoom + ' and the current maxZoom, inclusive');
    },

    /**
     * Sets or clears the map's maximum zoom level.
     * If the map's current zoom level is higher than the new maximum,
     * the map will zoom to the new maximum.
     *
     * @param {?number} maxZoom The maximum zoom level to set (0-20).
     *   If `null` or `undefined` is provided, the function removes the current maximum zoom (sets it to 20).
     * @returns {Map} `this`
     */
    setMaxZoom: function(maxZoom) {

        maxZoom = maxZoom === null || maxZoom === undefined ? defaultMaxZoom : maxZoom;

        if (maxZoom >= this.transform.minZoom && maxZoom <= defaultMaxZoom) {
            this.transform.maxZoom = maxZoom;
            this._update();

            if (this.getZoom() > maxZoom) this.setZoom(maxZoom);

            return this;

        } else throw new Error('maxZoom must be between the current minZoom and ' + defaultMaxZoom + ', inclusive');
    },
    /**
     * Returns a [`Point`](#Point) representing pixel coordinates, relative to the map's `container`,
     * that correspond to the specified geographical location.
     *
     * @param {LngLatLike} lnglat The geographical location to project.
     * @returns {Point} The [`Point`](#Point) corresponding to `lnglat`, relative to the map's `container`.
     */
    project: function(lnglat) {
        return this.transform.locationPoint(LngLat.convert(lnglat));
    },

    /**
     * Returns a [`LngLat`](#LngLat) representing geographical coordinates that correspond
     * to the specified pixel coordinates.
     *
     * @param {PointLike} point The pixel coordinates to unproject.
     * @returns {LngLat} The [`LngLat`](#LngLat) corresponding to `point`.
     */
    unproject: function(point) {
        return this.transform.pointLocation(Point.convert(point));
    },

    /**
     * Returns an array of [GeoJSON](http://geojson.org/)
     * [Feature objects](http://geojson.org/geojson-spec.html#feature-objects)
     * representing visible features that satisfy the query parameters.
     *
     * @param {PointLike|Array<PointLike>} [geometry] - The geometry of the query region:
     * either a single point or southwest and northeast points describing a bounding box.
     * Omitting this parameter (i.e. calling [`Map#queryRenderedFeatures`](#Map#queryRenderedFeatures) with zero arguments,
     * or with only a `parameters` argument) is equivalent to passing a bounding box encompassing the entire
     * map viewport.
     * @param {Object} [parameters]
     * @param {Array<string>} [parameters.layers] An array of style layer IDs for the query to inspect.
     *   Only features within these layers will be returned. If this parameter is undefined, all layers will be checked.
     * @param {Array} [parameters.filter] A [filter](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
     *   to limit query results.
     *
     * @returns {Array<Object>} An array of [GeoJSON](http://geojson.org/)
     * [feature objects](http://geojson.org/geojson-spec.html#feature-objects).
     *
     * The `properties` value of each returned feature object contains the properties of its source feature. For GeoJSON sources, only
     * string and numeric property values are supported (i.e. `null`, `Array`, and `Object` values are not supported).
     *
     * Each feature includes a top-level `layer` property whose value is an object representing the style layer to
     * which the feature belongs. Layout and paint properties in this object contain values which are fully evaluated
     * for the given zoom level and feature.
     *
     * Only visible features are returned. The topmost rendered feature appears first in the returned array, and
     * subsequent features are sorted by descending z-order. Features that are rendered multiple times (due to wrapping
     * across the antimeridian at low zoom levels) are returned only once (though subject to the following caveat).
     *
     * Because features come from tiled vector data or GeoJSON data that is converted to tiles internally, feature
     * geometries are clipped at tile boundaries and, as a result, features may appear multiple times in query
     * results when they span multiple tiles. For example, suppose
     * there is a highway running through the bounding rectangle of a query. The results of the query will be those
     * parts of the highway that lie within the map tiles covering the bounding rectangle, even if the highway extends
     * into other tiles, and the portion of the highway within each map tile will be returned as a separate feature.
     *
     * @example
     * // Find all features at a point
     * var features = map.queryRenderedFeatures(
     *   [20, 35],
     *   { layers: ['my-layer-name'] }
     * );
     *
     * @example
     * // Find all features within a static bounding box
     * var features = map.queryRenderedFeatures(
     *   [[10, 20], [30, 50]],
     *   { layers: ['my-layer-name'] }
     * );
     *
     * @example
     * // Find all features within a bounding box around a point
     * var width = 10;
     * var height = 20;
     * var features = map.queryRenderedFeatures([
     *   [point.x - width / 2, point.y - height / 2],
     *   [point.x + width / 2, point.y + height / 2]
     * ], { layers: ['my-layer-name'] });
     *
     * @example
     * // Query all rendered features from a single layer
     * var features = map.queryRenderedFeatures({ layers: ['my-layer-name'] });
     */
    queryRenderedFeatures: function() {
        var params = {};
        var geometry;

        if (arguments.length === 2) {
            geometry = arguments[0];
            params = arguments[1];
        } else if (arguments.length === 1 && isPointLike(arguments[0])) {
            geometry = arguments[0];
        } else if (arguments.length === 1) {
            params = arguments[0];
        }

        return this.style.queryRenderedFeatures(
            this._makeQueryGeometry(geometry),
            params,
            this.transform.zoom,
            this.transform.angle
        );

        function isPointLike(input) {
            return input instanceof Point || Array.isArray(input);
        }
    },

    _makeQueryGeometry: function(pointOrBox) {
        if (pointOrBox === undefined) {
            // bounds was omitted: use full viewport
            pointOrBox = [
                Point.convert([0, 0]),
                Point.convert([this.transform.width, this.transform.height])
            ];
        }

        var queryGeometry;
        var isPoint = pointOrBox instanceof Point || typeof pointOrBox[0] === 'number';

        if (isPoint) {
            var point = Point.convert(pointOrBox);
            queryGeometry = [point];
        } else {
            var box = [Point.convert(pointOrBox[0]), Point.convert(pointOrBox[1])];
            queryGeometry = [
                box[0],
                new Point(box[1].x, box[0].y),
                box[1],
                new Point(box[0].x, box[1].y),
                box[0]
            ];
        }

        queryGeometry = queryGeometry.map(function(p) {
            return this.transform.pointCoordinate(p);
        }.bind(this));

        return queryGeometry;
    },

    /**
     * Returns an array of [GeoJSON](http://geojson.org/)
     * [Feature objects](http://geojson.org/geojson-spec.html#feature-objects)
     * representing features within the specified vector tile or GeoJSON source that satisfy the query parameters.
     *
     * @param {string} sourceID The ID of the vector tile or GeoJSON source to query.
     * @param {Object} parameters
     * @param {string} [parameters.sourceLayer] The name of the vector tile layer to query. *For vector tile
     *   sources, this parameter is required.* For GeoJSON sources, it is ignored.
     * @param {Array} [parameters.filter] A [filter](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter)
     *   to limit query results.
     *
     * @returns {Array<Object>} An array of [GeoJSON](http://geojson.org/)
     * [Feature objects](http://geojson.org/geojson-spec.html#feature-objects).
     *
     * In contrast to [`Map#queryRenderedFeatures`](#Map#queryRenderedFeatures), this function
     * returns all features matching the query parameters,
     * whether or not they are rendered by the current style (i.e. visible). The domain of the query includes all currently-loaded
     * vector tiles and GeoJSON source tiles: this function does not check tiles outside the currently
     * visible viewport.
     *
     * Because features come from tiled vector data or GeoJSON data that is converted to tiles internally, feature
     * geometries are clipped at tile boundaries and, as a result, features may appear multiple times in query
     * results when they span multiple tiles. For example, suppose
     * there is a highway running through the bounding rectangle of a query. The results of the query will be those
     * parts of the highway that lie within the map tiles covering the bounding rectangle, even if the highway extends
     * into other tiles, and the portion of the highway within each map tile will be returned as a separate feature.
     */
    querySourceFeatures: function(sourceID, params) {
        return this.style.querySourceFeatures(sourceID, params);
    },

    /**
     * Replaces the map's Mapbox style object with a new value.
     *
     * @param {Object|string} style A JSON object conforming to the schema described in the
     *   [Mapbox Style Specification](https://mapbox.com/mapbox-gl-style-spec/), or a URL to such JSON.
     * @returns {Map} `this`
     */
    setStyle: function(style) {
        if (this.style) {
            this.style
                .off('load', this._onStyleLoad)
                .off('error', this._forwardStyleEvent)
                .off('change', this._onStyleChange)
                .off('source.add', this._onSourceAdd)
                .off('source.remove', this._onSourceRemove)
                .off('source.load', this._onSourceUpdate)
                .off('source.error', this._forwardSourceEvent)
                .off('source.change', this._onSourceUpdate)
                .off('layer.add', this._forwardLayerEvent)
                .off('layer.remove', this._forwardLayerEvent)
                .off('layer.error', this._forwardLayerEvent)
                .off('tile.add', this._forwardTileEvent)
                .off('tile.remove', this._forwardTileEvent)
                .off('tile.load', this._update)
                .off('tile.error', this._forwardTileEvent)
                .off('tile.stats', this._forwardTileEvent)
                ._remove();

            this.off('rotate', this.style._redoPlacement);
            this.off('pitch', this.style._redoPlacement);
        }

        if (!style) {
            this.style = null;
            return this;
        } else if (style instanceof Style) {
            this.style = style;
        } else {
            this.style = new Style(style, this.animationLoop, this._workerCount);
        }

        this.style
            .on('load', this._onStyleLoad)
            .on('error', this._forwardStyleEvent)
            .on('change', this._onStyleChange)
            .on('source.add', this._onSourceAdd)
            .on('source.remove', this._onSourceRemove)
            .on('source.load', this._onSourceUpdate)
            .on('source.error', this._forwardSourceEvent)
            .on('source.change', this._onSourceUpdate)
            .on('layer.add', this._forwardLayerEvent)
            .on('layer.remove', this._forwardLayerEvent)
            .on('layer.error', this._forwardLayerEvent)
            .on('tile.add', this._forwardTileEvent)
            .on('tile.remove', this._forwardTileEvent)
            .on('tile.load', this._update)
            .on('tile.error', this._forwardTileEvent)
            .on('tile.stats', this._forwardTileEvent);

        this.on('rotate', this.style._redoPlacement);
        this.on('pitch', this.style._redoPlacement);

        return this;
    },

    /**
     * Returns the map's Mapbox style object, which can be used to recreate the map's style.
     *
     * @returns {Object} The map's style object.
     */
    getStyle: function() {
        if (this.style) {
            return this.style.serialize();
        }
    },

    /**
     * Adds a source to the map's style.
     *
     * @param {string} id The ID of the source to add. Must not conflict with existing sources.
     * @param {Object} source The source object, conforming to the
     * Mapbox Style Specification's [source definition](https://www.mapbox.com/mapbox-gl-style-spec/#sources).
     * @param {string} source.type The source type, which must be either one of the core Mapbox GL source types defined in the style specification or a custom type that has been added to the map with {@link Map#addSourceType}.
     * @fires source.add
     * @returns {Map} `this`
     */
    addSource: function(id, source) {
        this.style.addSource(id, source);
        this._update(true);
        return this;
    },

    /**
     * Adds a [custom source type](#Custom Sources), making it available for use with
     * {@link Map#addSource}.
     * @private
     * @param {string} name The name of the source type; source definition objects use this name in the `{type: ...}` field.
     * @param {Function} SourceType A {@link Source} constructor.
     * @param {Function} callback Called when the source type is ready or with an error argument if there is an error.
     */
    addSourceType: function (name, SourceType, callback) {
        return this.style.addSourceType(name, SourceType, callback);
    },

    /**
     * Removes a source from the map's style.
     *
     * @param {string} id The ID of the source to remove.
     * @fires source.remove
     * @returns {Map} `this`
     */
    removeSource: function(id) {
        this.style.removeSource(id);
        this._update(true);
        return this;
    },

    /**
     * Returns the source with the specified ID in the map's style.
     *
     * @param {string} id The ID of the source to get.
     * @returns {?Object} The style source with the specified ID, or `undefined`
     *   if the ID corresponds to no existing sources.
     */
    getSource: function(id) {
        return this.style.getSource(id);
    },

    /**
     * Adds a [Mapbox style layer](https://www.mapbox.com/mapbox-gl-style-spec/#layers)
     * to the map's style.
     *
     * A layer defines styling for data from a specified source.
     *
     * @param {Object} layer The style layer to add, conforming to the Mapbox Style Specification's
     *   [layer definition](https://www.mapbox.com/mapbox-gl-style-spec/#layers).
     * @param {string} [before] The ID of an existing layer to insert the new layer before.
     *   If this argument is omitted, the layer will be appended to the end of the layers array.
     * @fires layer.add
     * @returns {Map} `this`
     */
    addLayer: function(layer, before) {
        this.style.addLayer(layer, before);
        this._update(true);
        return this;
    },

    /**
     * Removes a layer from the map's style.
     *
     * Also removes any layers which refer to the specified layer via a
     * [`ref` property](https://www.mapbox.com/mapbox-gl-style-spec/#layer-ref).
     *
     * @param {string} id The ID of the layer to remove.
     * @throws {Error} if no layer with the specified `id` exists.
     * @fires layer.remove
     * @returns {Map} `this`
     */
    removeLayer: function(id) {
        this.style.removeLayer(id);
        this._update(true);
        return this;
    },

    /**
     * Returns the layer with the specified ID in the map's style.
     *
     * @param {string} id The ID of the layer to get.
     * @returns {?Object} The layer with the specified ID, or `undefined`
     *   if the ID corresponds to no existing layers.
     */
    getLayer: function(id) {
        return this.style.getLayer(id);
    },

    /**
     * Sets the filter for the specified style layer.
     *
     * @param {string} layer The ID of the layer to which the filter will be applied.
     * @param {Array} filter The filter, conforming to the Mapbox Style Specification's
     *   [filter definition](https://www.mapbox.com/mapbox-gl-style-spec/#types-filter).
     * @returns {Map} `this`
     * @example
     * map.setFilter('my-layer', ['==', 'name', 'USA']);
     */
    setFilter: function(layer, filter) {
        this.style.setFilter(layer, filter);
        this._update(true);
        return this;
    },

    /**
     * Sets the zoom extent for the specified style layer.
     *
     * @param {string} layerId The ID of the layer to which the zoom extent will be applied.
     * @param {number} minzoom The minimum zoom to set (0-20).
     * @param {number} maxzoom The maximum zoom to set (0-20).
     * @returns {Map} `this`
     * @example
     * map.setLayerZoomRange('my-layer', 2, 5);
     */
    setLayerZoomRange: function(layerId, minzoom, maxzoom) {
        this.style.setLayerZoomRange(layerId, minzoom, maxzoom);
        this._update(true);
        return this;
    },

    /**
     * Returns the filter applied to the specified style layer.
     *
     * @param {string} layer The ID of the style layer whose filter to get.
     * @returns {Array} The layer's filter.
     */
    getFilter: function(layer) {
        return this.style.getFilter(layer);
    },

    /**
     * Sets the value of a paint property in the specified style layer.
     *
     * @param {string} layer The ID of the layer to set the paint property in.
     * @param {string} name The name of the paint property to set.
     * @param {*} value The value of the paint propery to set.
     *   Must be of a type appropriate for the property, as defined in the [Mapbox Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/).
     * @param {string=} klass A style class specifier for the paint property.
     * @returns {Map} `this`
     * @example
     * map.setPaintProperty('my-layer', 'fill-color', '#faafee');
     */
    setPaintProperty: function(layer, name, value, klass) {
        this.style.setPaintProperty(layer, name, value, klass);
        this._update(true);
        return this;
    },

    /**
     * Returns the value of a paint property in the specified style layer.
     *
     * @param {string} layer The ID of the layer to get the paint property from.
     * @param {string} name The name of a paint property to get.
     * @param {string=} klass A class specifier for the paint property.
     * @returns {*} The value of the specified paint property.
     */
    getPaintProperty: function(layer, name, klass) {
        return this.style.getPaintProperty(layer, name, klass);
    },

    /**
     * Sets the value of a layout property in the specified style layer.
     *
     * @param {string} layer The ID of the layer to set the layout property in.
     * @param {string} name The name of the layout property to set.
     * @param {*} value The value of the layout propery. Must be of a type appropriate for the property, as defined in the [Mapbox Style Specification](https://www.mapbox.com/mapbox-gl-style-spec/).
     * @returns {Map} `this`
     * @example
     * map.setLayoutProperty('my-layer', 'visibility', 'none');
     */
    setLayoutProperty: function(layer, name, value) {
        this.style.setLayoutProperty(layer, name, value);
        this._update(true);
        return this;
    },

    /**
     * Returns the value of a layout property in the specified style layer.
     *
     * @param {string} layer The ID of the layer to get the layout property from.
     * @param {string} name The name of the layout property to get.
     * @returns {*} The value of the specified layout property.
     */
    getLayoutProperty: function(layer, name) {
        return this.style.getLayoutProperty(layer, name);
    },

    /**
     * Returns the map's containing HTML element.
     *
     * @returns {HTMLElement} The map's container.
     */
    getContainer: function() {
        return this._container;
    },

    /**
     * Returns the HTML element containing the map's `<canvas>` element.
     *
     * If you want to add non-GL overlays to the map, you should append them to this element.
     *
     * This is the element to which event bindings for map interactivity (such as panning and zooming) are
     * attached. It will receive bubbled events from child elements such as the `<canvas>`, but not from
     * map controls.
     *
     * @returns {HTMLElement} The container of the map's `<canvas>`.
     */
    getCanvasContainer: function() {
        return this._canvasContainer;
    },

    /**
     * Returns the map's `<canvas>` element.
     *
     * @returns {HTMLCanvasElement} The map's `<canvas>` element.
     */
    getCanvas: function() {
        return this._canvas.getElement();
    },

    _setupContainer: function() {
        var container = this._container;
        container.classList.add('mapboxgl-map');

        var canvasContainer = this._canvasContainer = DOM.create('div', 'mapboxgl-canvas-container', container);
        if (this._interactive) {
            canvasContainer.classList.add('mapboxgl-interactive');
        }
        this._canvas = new Canvas(this, canvasContainer);

        var controlContainer = this._controlContainer = DOM.create('div', 'mapboxgl-control-container', container);
        var corners = this._controlCorners = {};
        ['top-left', 'top-right', 'bottom-left', 'bottom-right'].forEach(function (pos) {
            corners[pos] = DOM.create('div', 'mapboxgl-ctrl-' + pos, controlContainer);
        });
    },

    _setupPainter: function() {
        var gl = this._canvas.getWebGLContext({
            failIfMajorPerformanceCaveat: this._failIfMajorPerformanceCaveat,
            preserveDrawingBuffer: this._preserveDrawingBuffer
        });

        if (!gl) {
            this.fire('error', { error: new Error('Failed to initialize WebGL') });
            return;
        }

        this.painter = new Painter(gl, this.transform);
    },

    /**
     * Fired when the WebGL context is lost.
     *
     * @event webglcontextlost
     * @memberof Map
     * @instance
     * @type {Object}
     * @property {WebGLContextEvent} originalEvent The original DOM event.
     */
    _contextLost: function(event) {
        event.preventDefault();
        if (this._frameId) {
            browser.cancelFrame(this._frameId);
        }
        this.fire('webglcontextlost', {originalEvent: event});
    },

    /**
     * Fired when the WebGL context is restored.
     *
     * @event webglcontextrestored
     * @memberof Map
     * @instance
     * @type {Object}
     * @property {WebGLContextEvent} originalEvent The original DOM event.
     */
    _contextRestored: function(event) {
        this._setupPainter();
        this.resize();
        this._update();
        this.fire('webglcontextrestored', {originalEvent: event});
    },

    /**
     * Returns a Boolean indicating whether the map is fully loaded.
     *
     * Returns `false` if the style is not yet fully loaded,
     * or if there has been a change to the sources or style that
     * has not yet fully loaded.
     *
     * @returns {boolean} A Boolean indicating whether the map is fully loaded.
     */
    loaded: function() {
        if (this._styleDirty || this._sourcesDirty)
            return false;
        if (!this.style || !this.style.loaded())
            return false;
        return true;
    },

    /**
     * Update this map's style and sources, and re-render the map.
     *
     * @param {boolean} updateStyle mark the map's style for reprocessing as
     * well as its sources
     * @returns {Map} this
     * @private
     */
    _update: function(updateStyle) {
        if (!this.style) return this;

        this._styleDirty = this._styleDirty || updateStyle;
        this._sourcesDirty = true;

        this._rerender();

        return this;
    },

    /**
     * Call when a (re-)render of the map is required, e.g. when the
     * user panned or zoomed,f or new data is available.
     * @returns {Map} this
     * @private
     */
    _render: function() {
        try {
            if (this.style && this._styleDirty) {
                this._styleDirty = false;
                this.style.update(this._classes, this._classOptions);
                this._classOptions = null;
                this.style._recalculate(this.transform.zoom);
            }

            if (this.style && this._sourcesDirty) {
                this._sourcesDirty = false;
                this.style._updateSources(this.transform);
            }

            this.painter.render(this.style, {
                debug: this.showTileBoundaries,
                showOverdrawInspector: this._showOverdrawInspector,
                vertices: this.vertices,
                rotating: this.rotating,
                zooming: this.zooming
            });

            this.fire('render');

            if (this.loaded() && !this._loaded) {
                this._loaded = true;
                this.fire('load');
            }

            this._frameId = null;

            if (!this.animationLoop.stopped()) {
                this._styleDirty = true;
            }

            if (this._sourcesDirty || this._repaint || this._styleDirty) {
                this._rerender();
            }

        } catch (error) {
            this.fire('error', {error: error});
        }

        return this;
    },

    /**
     * Destroys the map's underlying resources, including web workers and DOM elements.
     *
     * After calling this method, you must not call any other methods on the map.
     */
    remove: function() {
        if (this._hash) this._hash.remove();
        browser.cancelFrame(this._frameId);
        this.setStyle(null);
        if (typeof window !== 'undefined') {
            window.removeEventListener('resize', this._onWindowResize, false);
        }
        var extension = this.painter.gl.getExtension('WEBGL_lose_context');
        if (extension) extension.loseContext();
        removeNode(this._canvasContainer);
        removeNode(this._controlContainer);
        this._container.classList.remove('mapboxgl-map');
    },

    _rerender: function() {
        if (this.style && !this._frameId) {
            this._frameId = browser.frame(this._render);
        }
    },

    _forwardStyleEvent: function(e) {
        this.fire('style.' + e.type, util.extend({style: e.target}, e));
    },

    _forwardSourceEvent: function(e) {
        this.fire(e.type, util.extend({style: e.target}, e));
    },

    _forwardLayerEvent: function(e) {
        this.fire(e.type, util.extend({style: e.target}, e));
    },

    _forwardTileEvent: function(e) {
        this.fire(e.type, util.extend({style: e.target}, e));
    },

    _onStyleLoad: function(e) {
        if (this.transform.unmodified) {
            this.jumpTo(this.style.stylesheet);
        }
        this.style.update(this._classes, {transition: false});
        this._forwardStyleEvent(e);
    },

    _onStyleChange: function(e) {
        this._update(true);
        this._forwardStyleEvent(e);
    },

    _onSourceAdd: function(e) {
        var source = e.source;
        if (source.onAdd)
            source.onAdd(this);
        this._forwardSourceEvent(e);
    },

    _onSourceRemove: function(e) {
        var source = e.source;
        if (source.onRemove)
            source.onRemove(this);
        this._forwardSourceEvent(e);
    },

    _onSourceUpdate: function(e) {
        this._update();
        this._forwardSourceEvent(e);
    },

    _onWindowOnline: function() {
        this._update();
    },

    _onWindowResize: function() {
        if (this._trackResize) {
            this.stop().resize()._update();
        }
    }
});

util.extendAll(Map.prototype, /** @lends Map.prototype */{

    /**
     * Gets and sets a Boolean indicating whether the map will render an outline
     * around each tile. These tile boundaries are useful for debugging.
     *
     * @name showTileBoundaries
     * @type {boolean}
     * @instance
     * @memberof Map
     */
    _showTileBoundaries: false,
    get showTileBoundaries() { return this._showTileBoundaries; },
    set showTileBoundaries(value) {
        if (this._showTileBoundaries === value) return;
        this._showTileBoundaries = value;
        this._update();
    },

    /**
     * Gets and sets a Boolean indicating whether the map will render boxes
     * around all symbols in the data source, revealing which symbols
     * were rendered or which were hidden due to collisions.
     * This information is useful for debugging.
     *
     * @name showCollisionBoxes
     * @type {boolean}
     * @instance
     * @memberof Map
     */
    _showCollisionBoxes: false,
    get showCollisionBoxes() { return this._showCollisionBoxes; },
    set showCollisionBoxes(value) {
        if (this._showCollisionBoxes === value) return;
        this._showCollisionBoxes = value;
        this.style._redoPlacement();
    },

    /*
     * Gets and sets a Boolean indicating whether the map should color-code
     * each fragment to show how many times it has been shaded.
     * White fragments have been shaded 8 or more times.
     * Black fragments have been shaded 0 times.
     * This information is useful for debugging.
     *
     * @name showOverdraw
     * @type {boolean}
     * @instance
     * @memberof Map
     */
    _showOverdrawInspector: false,
    get showOverdrawInspector() { return this._showOverdrawInspector; },
    set showOverdrawInspector(value) {
        if (this._showOverdrawInspector === value) return;
        this._showOverdrawInspector = value;
        this._update();
    },

    /**
     * Gets and sets a Boolean indicating whether the map will
     * continuously repaint. This information is useful for analyzing performance.
     *
     * @name repaint
     * @type {boolean}
     * @instance
     * @memberof Map
     */
    _repaint: false,
    get repaint() { return this._repaint; },
    set repaint(value) { this._repaint = value; this._update(); },

    // show vertices
    _vertices: false,
    get vertices() { return this._vertices; },
    set vertices(value) { this._vertices = value; this._update(); }
});

function removeNode(node) {
    if (node.parentNode) {
        node.parentNode.removeChild(node);
    }
}

/**
 * A [`LngLat`](#LngLat) object or an array of two numbers representing longitude and latitude.
 *
 * @typedef {(LngLat | Array<number>)} LngLatLike
 * @example
 * var v1 = new mapboxgl.LngLat(-122.420679, 37.772537);
 * var v2 = [-122.420679, 37.772537];
 */

/**
 * A [`LngLatBounds`](#LngLatBounds) object or an array of [`LngLatLike`](#LngLatLike) objects.
 *
 * @typedef {(LngLatBounds | Array<LngLatLike>)} LngLatBoundsLike
 * @example
 * var v1 = new mapboxgl.LngLatBounds(
 *   new mapboxgl.LngLat(-73.9876, 40.7661),
 *   new mapboxgl.LngLat(-73.9397, 40.8002)
 * );
 * var v2 = new mapboxgl.LngLatBounds([-73.9876, 40.7661], [-73.9397, 40.8002])
 * var v3 = [[-73.9876, 40.7661], [-73.9397, 40.8002]];
 */

/**
 * A [`Point` geometry](https://github.com/mapbox/point-geometry) object, which has
 * `x` and `y` properties representing coordinates.
 *
 * @typedef {Object} Point
 */

/**
 * A [`Point`](#Point) or an array of two numbers representing `x` and `y` coordinates.
 *
 * @typedef {(Point | Array<number>)} PointLike
 */

/**
 * Options common to {@link Map#addClass}, {@link Map#removeClass},
 * and {@link Map#setClasses}, controlling
 * whether or not to smoothly transition property changes triggered by a class change.
 *
 * @typedef {Object} StyleOptions
 * @property {boolean} transition If `true`, property changes will smootly transition.
 */

/**
 * Fired whenever the map is drawn to the screen, as the result of
 *
 * - a change to the map's position, zoom, pitch, or bearing
 * - a change to the map's style
 * - a change to a GeoJSON source
 * - the loading of a vector tile, GeoJSON file, glyph, or sprite
 *
 * @event render
 * @memberof Map
 * @instance
 */

/**
 * Fired when a point device (usually a mouse) leaves the map's canvas.
 *
 * @event mouseout
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired when a pointing device (usually a mouse) is pressed within the map.
 *
 * @event mousedown
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired when a pointing device (usually a mouse) is released within the map.
 *
 * @event mouseup
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired when a pointing device (usually a mouse) is moved within the map.
 *
 * @event mousemove
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired when a touch point is placed on the map.
 *
 * @event touchstart
 * @memberof Map
 * @instance
 * @property {MapTouchEvent} data
 */

/**
 * Fired when a touch point is removed from the map.
 *
 * @event touchend
 * @memberof Map
 * @instance
 * @property {MapTouchEvent} data
 */

/**
 * Fired when a touch point is moved within the map.
 *
 * @event touchmove
 * @memberof Map
 * @instance
 * @property {MapTouchEvent} data
 */

/**
 * Fired when a touch point has been disrupted.
 *
 * @event touchcancel
 * @memberof Map
 * @instance
 * @property {MapTouchEvent} data
 */

/**
 * Fired when a pointing device (usually a mouse) is pressed and released at the same point on the map.
 *
 * @event click
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired when a pointing device (usually a mouse) is clicked twice at the same point on the map.
 *
 * @event dblclick
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired when the right button of the mouse is clicked or the context menu key is pressed within the map.
 *
 * @event contextmenu
 * @memberof Map
 * @instance
 * @property {MapMouseEvent} data
 */

/**
 * Fired immediately after all necessary resources have been downloaded
 * and the first visually complete rendering of the map has occurred.
 *
 * @event load
 * @memberof Map
 * @instance
 * @type {Object}
 */

/**
 * Fired just before the map begins a transition from one
 * view to another, as the result of either user interaction or methods such as [Map#jumpTo](#Map#jumpTo).
 *
 * @event movestart
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired repeatedly during an animated transition from one view to
 * another, as the result of either user interaction or methods such as [Map#flyTo](#Map#flyTo).
 *
 * @event move
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

/**
 * Fired just after the map completes a transition from one
 * view to another, as the result of either user interaction or methods such as [Map#jumpTo](#Map#jumpTo).
 *
 * @event moveend
 * @memberof Map
 * @instance
 * @property {MapMouseEvent | MapTouchEvent} data
 */

 /**
  * Fired if any error occurs. This is GL JS's primary error reporting
  * mechanism. We use an event instead of `throw` to better accommodate
  * asyncronous operations. If no listeners are bound to the `error` event, the
  * error will be printed to the console.
  *
  * @event error
  * @memberof Map
  * @instance
  * @property {{error: {message: string}}} data
  */

},{"../geo/lng_lat":315,"../geo/lng_lat_bounds":316,"../geo/transform":317,"../render/painter":331,"../style/animation_loop":351,"../style/style":354,"../util/browser":402,"../util/canvas":403,"../util/dom":404,"../util/evented":410,"../util/util":418,"./bind_handlers":383,"./camera":384,"./control/attribution":385,"./hash":396,"point-geometry":919}],398:[function(require,module,exports){
/* eslint-disable */
'use strict';

module.exports = Marker;

var DOM = require('../util/dom');
var LngLat = require('../geo/lng_lat');
var Point = require('point-geometry');

/**
 * Creates a marker component
 * @class Marker
 * @param {HTMLElement=} element DOM element to use as a marker (creates a div element by default)
 * @param {Object=} options
 * @param {PointLike=} options.offset The offset in pixels as a [`PointLike`](#PointLike) object to apply relative to the element's top left corner. Negatives indicate left and up.
 * @example
 * var marker = new mapboxgl.Marker()
 *   .setLngLat([30.5, 50.5])
 *   .addTo(map);
 */
function Marker(element, options) {
    if (!element) {
        element = DOM.create('div');
    }
    element.classList.add('mapboxgl-marker');
    this._el = element;

    this._offset = Point.convert(options && options.offset || [0, 0]);

    this._update = this._update.bind(this);
}

Marker.prototype = {
    /**
     * Attaches the marker to a map
     * @param {Map} map
     * @returns {Marker} `this`
     */
    addTo: function(map) {
        this.remove();
        this._map = map;
        map.getCanvasContainer().appendChild(this._el);
        map.on('move', this._update);
        this._update();
        return this;
    },

    /**
     * Removes the marker from a map
     * @example
     * var marker = new mapboxgl.Marker().addTo(map);
     * marker.remove();
     * @returns {Marker} `this`
     */
    remove: function() {
        if (this._map) {
            this._map.off('move', this._update);
            this._map = null;
        }
        var parent = this._el.parentNode;
        if (parent) parent.removeChild(this._el);
        return this;
    },

    /**
     * Get the marker's geographical location
     * @returns {LngLat}
     */
    getLngLat: function() {
        return this._lngLat;
    },

    /**
     * Set the marker's geographical position and move it.
     * @param {LngLat} lnglat
     * @returns {Marker} `this`
     */
    setLngLat: function(lnglat) {
        this._lngLat = LngLat.convert(lnglat);
        this._update();
        return this;
    },

    getElement: function() {
        return this._el;
    },

    _update: function() {
        if (!this._map) return;
        var pos = this._map.project(this._lngLat)._add(this._offset);
        DOM.setTransform(this._el, 'translate(' + pos.x + 'px,' + pos.y + 'px)');
    }
};

},{"../geo/lng_lat":315,"../util/dom":404,"point-geometry":919}],399:[function(require,module,exports){
'use strict';

module.exports = Popup;

var util = require('../util/util');
var Evented = require('../util/evented');
var DOM = require('../util/dom');
var LngLat = require('../geo/lng_lat');

/**
 * A popup component.
 *
 * @class Popup
 * @param {Object} [options]
 * @param {boolean} [options.closeButton=true] If `true`, a close button will appear in the
 *   top right corner of the popup.
 * @param {boolean} [options.closeOnClick=true] If `true`, the popup will closed when the
 *   map is clicked.
 * @param {string} options.anchor - A string indicating the popup's location relative to
 *   the coordinate set via [Popup#setLngLat](#Popup#setLngLat).
 *   Options are `'top'`, `'bottom'`, `'left'`, `'right'`, `'top-left'`,
 * `'top-right'`, `'bottom-left'`, and `'bottom-right'`.
 * @example
 * var popup = new mapboxgl.Popup()
 *   .setLngLat(e.lngLat)
 *   .setHTML("<h1>Hello World!</h1>")
 *   .addTo(map);
 */
function Popup(options) {
    util.setOptions(this, options);
    util.bindAll([
        '_update',
        '_onClickClose'],
        this);
}

Popup.prototype = util.inherit(Evented, /** @lends Popup.prototype */{
    options: {
        closeButton: true,
        closeOnClick: true
    },

    /**
     * Adds the popup to a map.
     *
     * @param {Map} map The Mapbox GL JS map to add the popup to.
     * @returns {Popup} `this`
     */
    addTo: function(map) {
        this._map = map;
        this._map.on('move', this._update);
        if (this.options.closeOnClick) {
            this._map.on('click', this._onClickClose);
        }
        this._update();
        return this;
    },

    /**
     * Removes the popup from the map it has been added to.
     *
     * @example
     * var popup = new mapboxgl.Popup().addTo(map);
     * popup.remove();
     * @returns {Popup} `this`
     */
    remove: function() {
        if (this._content && this._content.parentNode) {
            this._content.parentNode.removeChild(this._content);
        }

        if (this._container) {
            this._container.parentNode.removeChild(this._container);
            delete this._container;
        }

        if (this._map) {
            this._map.off('move', this._update);
            this._map.off('click', this._onClickClose);
            delete this._map;
        }

        /**
         * Fired when the popup is closed manually or programatically.
         *
         * @event close
         * @memberof Popup
         * @instance
         * @type {Object}
         * @property {Popup} popup object that was closed
         */
        this.fire('close');

        return this;
    },

    /**
     * Returns the geographical location of the popup's anchor.
     *
     * @returns {LngLat} The geographical location of the popup's anchor.
     */
    getLngLat: function() {
        return this._lngLat;
    },

    /**
     * Sets the geographical location of the popup's anchor, and moves the popup to it.
     *
     * @param {LngLatLike} lnglat The geographical location to set as the popup's anchor.
     * @returns {Popup} `this`
     */
    setLngLat: function(lnglat) {
        this._lngLat = LngLat.convert(lnglat);
        this._update();
        return this;
    },

    /**
     * Sets the popup's content to a string of text.
     *
     * This function creates a [Text](https://developer.mozilla.org/en-US/docs/Web/API/Text) node in the DOM,
     * so it cannot insert raw HTML. Use this method for security against XSS
     * if the popup content is user-provided.
     *
     * @param {string} text Textual content for the popup.
     * @returns {Popup} `this`
     * @example
     * var popup = new mapboxgl.Popup()
     *   .setLngLat(e.lngLat)
     *   .setText('Hello, world!')
     *   .addTo(map);
     */
    setText: function(text) {
        return this.setDOMContent(document.createTextNode(text));
    },

    /**
     * Sets the popup's content to the HTML provided as a string.
     *
     * @param {string} html A string representing HTML content for the popup.
     * @returns {Popup} `this`
     */
    setHTML: function(html) {
        var frag = document.createDocumentFragment();
        var temp = document.createElement('body'), child;
        temp.innerHTML = html;
        while (true) {
            child = temp.firstChild;
            if (!child) break;
            frag.appendChild(child);
        }

        return this.setDOMContent(frag);
    },

    /**
     * Sets the popup's content to the element provided as a DOM node.
     *
     * @param {Node} htmlNode A DOM node to be used as content for the popup.
     * @returns {Popup} `this`
     * @example
     * // create an element with the popup content
     * var div = document.createElement('div');
     * div.innerHTML = 'Hello, world!';
     * var popup = new mapboxgl.Popup()
     *   .setLngLat(e.lngLat)
     *   .setDOMContent(div)
     *   .addTo(map);
     */
    setDOMContent: function(htmlNode) {
        this._createContent();
        this._content.appendChild(htmlNode);
        this._update();
        return this;
    },

    _createContent: function() {
        if (this._content && this._content.parentNode) {
            this._content.parentNode.removeChild(this._content);
        }

        this._content = DOM.create('div', 'mapboxgl-popup-content', this._container);

        if (this.options.closeButton) {
            this._closeButton = DOM.create('button', 'mapboxgl-popup-close-button', this._content);
            this._closeButton.type = 'button';
            this._closeButton.innerHTML = '&#215;';
            this._closeButton.addEventListener('click', this._onClickClose);
        }
    },

    _update: function() {
        if (!this._map || !this._lngLat || !this._content) { return; }

        if (!this._container) {
            this._container = DOM.create('div', 'mapboxgl-popup', this._map.getContainer());
            this._tip       = DOM.create('div', 'mapboxgl-popup-tip', this._container);
            this._container.appendChild(this._content);
        }

        var pos = this._map.project(this._lngLat).round(),
            anchor = this.options.anchor;

        if (!anchor) {
            var width = this._container.offsetWidth,
                height = this._container.offsetHeight;

            if (pos.y < height) {
                anchor = ['top'];
            } else if (pos.y > this._map.transform.height - height) {
                anchor = ['bottom'];
            } else {
                anchor = [];
            }

            if (pos.x < width / 2) {
                anchor.push('left');
            } else if (pos.x > this._map.transform.width - width / 2) {
                anchor.push('right');
            }

            if (anchor.length === 0) {
                anchor = 'bottom';
            } else {
                anchor = anchor.join('-');
            }
        }

        var anchorTranslate = {
            'top': 'translate(-50%,0)',
            'top-left': 'translate(0,0)',
            'top-right': 'translate(-100%,0)',
            'bottom': 'translate(-50%,-100%)',
            'bottom-left': 'translate(0,-100%)',
            'bottom-right': 'translate(-100%,-100%)',
            'left': 'translate(0,-50%)',
            'right': 'translate(-100%,-50%)'
        };

        var classList = this._container.classList;
        for (var key in anchorTranslate) {
            classList.remove('mapboxgl-popup-anchor-' + key);
        }
        classList.add('mapboxgl-popup-anchor-' + anchor);

        DOM.setTransform(this._container, anchorTranslate[anchor] + ' translate(' + pos.x + 'px,' + pos.y + 'px)');
    },

    _onClickClose: function() {
        this.remove();
    }
});

},{"../geo/lng_lat":315,"../util/dom":404,"../util/evented":410,"../util/util":418}],400:[function(require,module,exports){
'use strict';

module.exports = Actor;

/**
 * An implementation of the [Actor design pattern](http://en.wikipedia.org/wiki/Actor_model)
 * that maintains the relationship between asynchronous tasks and the objects
 * that spin them off - in this case, tasks like parsing parts of styles,
 * owned by the styles
 *
 * @param {WebWorker} target
 * @param {WebWorker} parent
 * @private
 */
function Actor(target, parent) {
    this.target = target;
    this.parent = parent;
    this.callbacks = {};
    this.callbackID = 0;
    this.receive = this.receive.bind(this);
    this.target.addEventListener('message', this.receive, false);
}

Actor.prototype.receive = function(message) {
    var data = message.data,
        id = data.id,
        callback;

    if (data.type === '<response>') {
        callback = this.callbacks[data.id];
        delete this.callbacks[data.id];
        if (callback) callback(data.error || null, data.data);
    } else if (typeof data.id !== 'undefined' && this.parent[data.type]) {
        // data.type == 'load tile', 'remove tile', etc.
        this.parent[data.type](data.data, done.bind(this));
    } else if (typeof data.id !== 'undefined' && this.parent.workerSources) {
        // data.type == sourcetype.method
        var keys = data.type.split('.');
        this.parent.workerSources[keys[0]][keys[1]](data.data, done.bind(this));
    } else {
        this.parent[data.type](data.data);
    }

    function done(err, data, buffers) {
        this.postMessage({
            type: '<response>',
            id: String(id),
            error: err ? String(err) : null,
            data: data
        }, buffers);
    }
};

Actor.prototype.send = function(type, data, callback, buffers) {
    var id = null;
    if (callback) this.callbacks[id = this.callbackID++] = callback;
    this.postMessage({ type: type, id: String(id), data: data }, buffers);
};

/**
 * Wrapped postMessage API that abstracts around IE's lack of
 * `transferList` support.
 *
 * @param {Object} message
 * @param {Object} transferList
 * @private
 */
Actor.prototype.postMessage = function(message, transferList) {
    this.target.postMessage(message, transferList);
};

},{}],401:[function(require,module,exports){
'use strict';

exports.getJSON = function(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.setRequestHeader('Accept', 'application/json');
    xhr.onerror = function(e) {
        callback(e);
    };
    xhr.onload = function() {
        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
            var data;
            try {
                data = JSON.parse(xhr.response);
            } catch (err) {
                return callback(err);
            }
            callback(null, data);
        } else {
            callback(new Error(xhr.statusText));
        }
    };
    xhr.send();
    return xhr;
};

exports.getArrayBuffer = function(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'arraybuffer';
    xhr.onerror = function(e) {
        callback(e);
    };
    xhr.onload = function() {
        if (xhr.status >= 200 && xhr.status < 300 && xhr.response) {
            callback(null, xhr.response);
        } else {
            callback(new Error(xhr.statusText));
        }
    };
    xhr.send();
    return xhr;
};

function sameOrigin(url) {
    var a = document.createElement('a');
    a.href = url;
    return a.protocol === document.location.protocol && a.host === document.location.host;
}

exports.getImage = function(url, callback) {
    return exports.getArrayBuffer(url, function(err, imgData) {
        if (err) return callback(err);
        var img = new Image();
        img.onload = function() {
            callback(null, img);
            (window.URL || window.webkitURL).revokeObjectURL(img.src);
        };
        var blob = new Blob([new Uint8Array(imgData)], { type: 'image/png' });
        img.src = (window.URL || window.webkitURL).createObjectURL(blob);
        img.getData = function() {
            var canvas = document.createElement('canvas');
            var context = canvas.getContext('2d');
            canvas.width = img.width;
            canvas.height = img.height;
            context.drawImage(img, 0, 0);
            return context.getImageData(0, 0, img.width, img.height).data;
        };
        return img;
    });
};

exports.getVideo = function(urls, callback) {
    var video = document.createElement('video');
    video.onloadstart = function() {
        callback(null, video);
    };
    for (var i = 0; i < urls.length; i++) {
        var s = document.createElement('source');
        if (!sameOrigin(urls[i])) {
            video.crossOrigin = 'Anonymous';
        }
        s.src = urls[i];
        video.appendChild(s);
    }
    video.getData = function() { return video; };
    return video;
};

},{}],402:[function(require,module,exports){
'use strict';

/**
 * Unlike js/util/browser.js, this code is written with the expectation
 * of a browser environment with a global 'window' object
 * @module browser
 * @private
 */

exports.window = window;

/**
 * Provides a function that outputs milliseconds: either performance.now()
 * or a fallback to Date.now()
 */
module.exports.now = (function() {
    if (window.performance &&
        window.performance.now) {
        return window.performance.now.bind(window.performance);
    } else {
        return Date.now.bind(Date);
    }
}());

var frame = window.requestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.msRequestAnimationFrame;

exports.frame = function(fn) {
    return frame(fn);
};

var cancel = window.cancelAnimationFrame ||
    window.mozCancelAnimationFrame ||
    window.webkitCancelAnimationFrame ||
    window.msCancelAnimationFrame;

exports.cancelFrame = function(id) {
    cancel(id);
};

exports.timed = function (fn, dur, ctx) {
    if (!dur) {
        fn.call(ctx, 1);
        return null;
    }

    var abort = false,
        start = module.exports.now();

    function tick(now) {
        if (abort) return;
        now = module.exports.now();

        if (now >= start + dur) {
            fn.call(ctx, 1);
        } else {
            fn.call(ctx, (now - start) / dur);
            exports.frame(tick);
        }
    }

    exports.frame(tick);

    return function() { abort = true; };
};

/**
 * Test if the current browser supports Mapbox GL JS
 * @param {Object} options
 * @param {boolean} [options.failIfMajorPerformanceCaveat=false] Return `false`
 *   if the performance of Mapbox GL JS would be dramatically worse than
 *   expected (i.e. a software renderer would be used)
 * @return {boolean}
 */
exports.supported = require('mapbox-gl-supported');

exports.hardwareConcurrency = navigator.hardwareConcurrency || 4;

Object.defineProperty(exports, 'devicePixelRatio', {
    get: function() { return window.devicePixelRatio; }
});

exports.supportsWebp = false;

var webpImgTest = document.createElement('img');
webpImgTest.onload = function() {
    exports.supportsWebp = true;
};
webpImgTest.src = 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA=';

exports.supportsGeolocation = !!navigator.geolocation;

},{"mapbox-gl-supported":303}],403:[function(require,module,exports){
'use strict';

var util = require('../util');
var isSupported = require('mapbox-gl-supported');

module.exports = Canvas;

function Canvas(parent, container) {
    this.canvas = document.createElement('canvas');

    if (parent && container) {
        this.canvas.style.position = 'absolute';
        this.canvas.classList.add('mapboxgl-canvas');
        this.canvas.addEventListener('webglcontextlost', parent._contextLost.bind(parent), false);
        this.canvas.addEventListener('webglcontextrestored', parent._contextRestored.bind(parent), false);
        this.canvas.setAttribute('tabindex', 0);
        container.appendChild(this.canvas);
    }
}

Canvas.prototype.resize = function(width, height) {
    var pixelRatio = window.devicePixelRatio || 1;

    // Request the required canvas size taking the pixelratio into account.
    this.canvas.width = pixelRatio * width;
    this.canvas.height = pixelRatio * height;

    // Maintain the same canvas size, potentially downscaling it for HiDPI displays
    this.canvas.style.width = width + 'px';
    this.canvas.style.height = height + 'px';
};

Canvas.prototype.getWebGLContext = function(attributes) {
    attributes = util.extend({}, attributes, isSupported.webGLContextAttributes);

    return this.canvas.getContext('webgl', attributes) ||
        this.canvas.getContext('experimental-webgl', attributes);
};

Canvas.prototype.getElement = function() {
    return this.canvas;
};

},{"../util":418,"mapbox-gl-supported":303}],404:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');

exports.create = function (tagName, className, container) {
    var el = document.createElement(tagName);
    if (className) el.className = className;
    if (container) container.appendChild(el);
    return el;
};

var docStyle = document.documentElement.style;

function testProp(props) {
    for (var i = 0; i < props.length; i++) {
        if (props[i] in docStyle) {
            return props[i];
        }
    }
}

var selectProp = testProp(['userSelect', 'MozUserSelect', 'WebkitUserSelect', 'msUserSelect']),
    userSelect;
exports.disableDrag = function () {
    if (selectProp) {
        userSelect = docStyle[selectProp];
        docStyle[selectProp] = 'none';
    }
};
exports.enableDrag = function () {
    if (selectProp) {
        docStyle[selectProp] = userSelect;
    }
};

var transformProp = testProp(['transform', 'WebkitTransform']);
exports.setTransform = function(el, value) {
    el.style[transformProp] = value;
};

// Suppress the next click, but only if it's immediate.
function suppressClick(e) {
    e.preventDefault();
    e.stopPropagation();
    window.removeEventListener('click', suppressClick, true);
}
exports.suppressClick = function() {
    window.addEventListener('click', suppressClick, true);
    window.setTimeout(function() {
        window.removeEventListener('click', suppressClick, true);
    }, 0);
};

exports.mousePos = function (el, e) {
    var rect = el.getBoundingClientRect();
    e = e.touches ? e.touches[0] : e;
    return new Point(
        e.clientX - rect.left - el.clientLeft,
        e.clientY - rect.top - el.clientTop
    );
};

exports.touchPos = function (el, e) {
    var rect = el.getBoundingClientRect(),
        points = [];
    for (var i = 0; i < e.touches.length; i++) {
        points.push(new Point(
            e.touches[i].clientX - rect.left - el.clientLeft,
            e.touches[i].clientY - rect.top - el.clientTop
        ));
    }
    return points;
};

},{"point-geometry":919}],405:[function(require,module,exports){
'use strict';
var WebWorkify = require('webworkify');

module.exports = function () {
    return new WebWorkify(require('../../source/worker'));
};

},{"../../source/worker":349,"webworkify":1016}],406:[function(require,module,exports){
'use strict';

var quickselect = require('quickselect');

// classifies an array of rings into polygons with outer rings and holes
module.exports = function classifyRings(rings, maxRings) {
    var len = rings.length;

    if (len <= 1) return [rings];

    var polygons = [],
        polygon,
        ccw;

    for (var i = 0; i < len; i++) {
        var area = calculateSignedArea(rings[i]);
        if (area === 0) continue;

        rings[i].area = Math.abs(area);

        if (ccw === undefined) ccw = area < 0;

        if (ccw === area < 0) {
            if (polygon) polygons.push(polygon);
            polygon = [rings[i]];

        } else {
            polygon.push(rings[i]);
        }
    }
    if (polygon) polygons.push(polygon);

    // Earcut performance degrages with the # of rings in a polygon. For this
    // reason, we limit strip out all but the `maxRings` largest rings.
    if (maxRings > 1) {
        for (var j = 0; j < polygons.length; j++) {
            if (polygons[j].length <= maxRings) continue;
            quickselect(polygons[j], maxRings, 1, polygons[j].length - 1, compareAreas);
            polygons[j] = polygons[j].slice(0, maxRings);
        }
    }

    return polygons;
};

function compareAreas(a, b) {
    return b.area - a.area;
}

function calculateSignedArea(ring) {
    var sum = 0;
    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
        p1 = ring[i];
        p2 = ring[j];
        sum += (p2.x - p1.x) * (p1.y + p2.y);
    }
    return sum;
}

},{"quickselect":929}],407:[function(require,module,exports){
'use strict';

module.exports = {
    API_URL: 'https://api.mapbox.com',
    REQUIRE_ACCESS_TOKEN: true
};

},{}],408:[function(require,module,exports){
'use strict';

var assert = require('assert');

module.exports = DictionaryCoder;

function DictionaryCoder(strings) {
    this._stringToNumber = {};
    this._numberToString = [];
    for (var i = 0; i < strings.length; i++) {
        var string = strings[i];
        this._stringToNumber[string] = i;
        this._numberToString[i] = string;
    }
}

DictionaryCoder.prototype.encode = function(string) {
    assert(string in this._stringToNumber);
    return this._stringToNumber[string];
};

DictionaryCoder.prototype.decode = function(n) {
    assert(n < this._numberToString.length);
    return this._numberToString[n];
};

},{"assert":9}],409:[function(require,module,exports){
'use strict';

var util = require('./util');
var Actor = require('./actor');
var WebWorker = require('./web_worker');

module.exports = Dispatcher;

/**
 * Responsible for sending messages from a {@link Source} to an associated
 * {@link WorkerSource}.
 *
 * @interface Dispatcher
 * @private
 */
function Dispatcher(length, parent) {
    this.actors = [];
    this.currentActor = 0;
    for (var i = 0; i < length; i++) {
        var worker = new WebWorker();
        var actor = new Actor(worker, parent);
        actor.name = "Worker " + i;
        this.actors.push(actor);
    }
}

Dispatcher.prototype = {
    /**
     * Broadcast a message to all Workers.
     * @method
     * @name broadcast
     * @param {string} type
     * @param {object} data
     * @param {Function} callback
     * @memberof Dispatcher
     * @instance
     */
    broadcast: function(type, data, cb) {
        cb = cb || function () {};
        util.asyncAll(this.actors, function (actor, done) {
            actor.send(type, data, done);
        }, cb);
    },

    /**
     * Send a message to a Worker.
     * @method
     * @name send
     * @param {string} type
     * @param {object} data
     * @param {Function} callback
     * @param {number|undefined} [targetID] The ID of the Worker to which to send this message. Omit to allow the dispatcher to choose.
     * @returns {number} The ID of the worker to which the message was sent.
     * @memberof Dispatcher
     * @instance
     */
    send: function(type, data, callback, targetID, buffers) {
        if (typeof targetID !== 'number' || isNaN(targetID)) {
            // Use round robin to send requests to web workers.
            targetID = this.currentActor = (this.currentActor + 1) % this.actors.length;
        }

        this.actors[targetID].send(type, data, callback, buffers);
        return targetID;
    },

    remove: function() {
        for (var i = 0; i < this.actors.length; i++) {
            this.actors[i].target.terminate();
        }
        this.actors = [];
    }
};

},{"./actor":400,"./util":418,"./web_worker":405}],410:[function(require,module,exports){
'use strict';

var util = require('./util');

/**
 * Methods mixed in to other classes for event capabilities.
 *
 * @mixin Evented
 */
var Evented = {

    /**
     * Adds a listener to a specified event type.
     *
     * @param {string} type The event type to add a listen for.
     * @param {Function} listener The function to be called when the event is fired.
     *   The listener function is called with the data object passed to `fire`,
     *   extended with `target` and `type` properties.
     * @returns {Object} `this`
     */
    on: function(type, listener) {
        this._events = this._events || {};
        this._events[type] = this._events[type] || [];
        this._events[type].push(listener);

        return this;
    },

    /**
     * Removes a previously registered event listener.
     *
     * @param {string} [type] The event type to remove listeners for.
     *   If none is specified, listeners will be removed for all event types.
     * @param {Function} [listener] The listener function to remove.
     *   If none is specified, all listeners will be removed for the event type.
     * @returns {Object} `this`
     */
    off: function(type, listener) {
        if (!type) {
            // clear all listeners if no arguments specified
            delete this._events;
            return this;
        }

        if (!this.listens(type)) return this;

        if (listener) {
            var idx = this._events[type].indexOf(listener);
            if (idx >= 0) {
                this._events[type].splice(idx, 1);
            }
            if (!this._events[type].length) {
                delete this._events[type];
            }
        } else {
            delete this._events[type];
        }

        return this;
    },

    /**
     * Adds a listener that will be called only once to a specified event type.
     *
     * The listener will be called first time the event fires after the listener is registered.
     *
     * @param {string} type The event type to listen for.
     * @param {Function} listener The function to be called when the event is fired the first time.
     * @returns {Object} `this`
     */
    once: function(type, listener) {
        var wrapper = function(data) {
            this.off(type, wrapper);
            listener.call(this, data);
        }.bind(this);
        this.on(type, wrapper);
        return this;
    },

    /**
     * Fires an event of the specified type.
     *
     * @param {string} type The type of event to fire.
     * @param {Object} [data] Data to be passed to any listeners.
     * @returns {Object} `this`
     */
    fire: function(type, data) {
        if (!this.listens(type)) {
            // To ensure that no error events are dropped, print them to the
            // console if they have no listeners.
            if (util.endsWith(type, 'error')) {
                console.error((data && data.error) || data || 'Empty error event');
            }
            return this;
        }

        data = util.extend({}, data);
        util.extend(data, {type: type, target: this});

        // make sure adding/removing listeners inside other listeners won't cause infinite loop
        var listeners = this._events[type].slice();

        for (var i = 0; i < listeners.length; i++) {
            listeners[i].call(this, data);
        }

        return this;
    },

    /**
     * Returns a Boolean indicating whether any listeners are registered for a specified event type.
     *
     * @param {string} type The event type to check.
     * @returns {boolean} `true` if there is at least one registered listener for specified event type.
     */
    listens: function(type) {
        return !!(this._events && this._events[type]);
    }
};

module.exports = Evented;

},{"./util":418}],411:[function(require,module,exports){
'use strict';

module.exports = Glyphs;

function Glyphs(pbf, end) {
    this.stacks = pbf.readFields(readFontstacks, [], end);
}

function readFontstacks(tag, stacks, pbf) {
    if (tag === 1) {
        var fontstack = pbf.readMessage(readFontstack, {glyphs: {}});
        stacks.push(fontstack);
    }
}

function readFontstack(tag, fontstack, pbf) {
    if (tag === 1) fontstack.name = pbf.readString();
    else if (tag === 2) fontstack.range = pbf.readString();
    else if (tag === 3) {
        var glyph = pbf.readMessage(readGlyph, {});
        fontstack.glyphs[glyph.id] = glyph;
    }
}

function readGlyph(tag, glyph, pbf) {
    if (tag === 1) glyph.id = pbf.readVarint();
    else if (tag === 2) glyph.bitmap = pbf.readBytes();
    else if (tag === 3) glyph.width = pbf.readVarint();
    else if (tag === 4) glyph.height = pbf.readVarint();
    else if (tag === 5) glyph.left = pbf.readSVarint();
    else if (tag === 6) glyph.top = pbf.readSVarint();
    else if (tag === 7) glyph.advance = pbf.readVarint();
}

},{}],412:[function(require,module,exports){
'use strict';

module.exports = interpolate;

function interpolate(a, b, t) {
    return (a * (1 - t)) + (b * t);
}

interpolate.number = interpolate;

interpolate.vec2 = function(from, to, t) {
    return [
        interpolate(from[0], to[0], t),
        interpolate(from[1], to[1], t)
    ];
};

/*
 * Interpolate between two colors given as 4-element arrays.
 *
 * @param {Color} from
 * @param {Color} to
 * @param {number} t interpolation factor between 0 and 1
 * @returns {Color} interpolated color
 */
interpolate.color = function(from, to, t) {
    return [
        interpolate(from[0], to[0], t),
        interpolate(from[1], to[1], t),
        interpolate(from[2], to[2], t),
        interpolate(from[3], to[3], t)
    ];
};

interpolate.array = function(from, to, t) {
    return from.map(function(d, i) {
        return interpolate(d, to[i], t);
    });
};

},{}],413:[function(require,module,exports){
'use strict';

module.exports = {
    multiPolygonIntersectsBufferedMultiPoint: multiPolygonIntersectsBufferedMultiPoint,
    multiPolygonIntersectsMultiPolygon: multiPolygonIntersectsMultiPolygon,
    multiPolygonIntersectsBufferedMultiLine: multiPolygonIntersectsBufferedMultiLine
};

function multiPolygonIntersectsBufferedMultiPoint(multiPolygon, rings, radius) {
    for (var j = 0; j < multiPolygon.length; j++) {
        var polygon = multiPolygon[j];
        for (var i = 0; i < rings.length; i++) {
            var ring = rings[i];
            for (var k = 0; k < ring.length; k++) {
                var point = ring[k];
                if (polygonContainsPoint(polygon, point)) return true;
                if (pointIntersectsBufferedLine(point, polygon, radius)) return true;
            }
        }
    }
    return false;
}

function multiPolygonIntersectsMultiPolygon(multiPolygonA, multiPolygonB) {

    if (multiPolygonA.length === 1 && multiPolygonA[0].length === 1) {
        return multiPolygonContainsPoint(multiPolygonB, multiPolygonA[0][0]);
    }

    for (var m = 0; m < multiPolygonB.length; m++) {
        var ring = multiPolygonB[m];
        for (var n = 0; n < ring.length; n++) {
            if (multiPolygonContainsPoint(multiPolygonA, ring[n])) return true;
        }
    }

    for (var j = 0; j < multiPolygonA.length; j++) {
        var polygon = multiPolygonA[j];
        for (var i = 0; i < polygon.length; i++) {
            if (multiPolygonContainsPoint(multiPolygonB, polygon[i])) return true;
        }

        for (var k = 0; k < multiPolygonB.length; k++) {
            if (lineIntersectsLine(polygon, multiPolygonB[k])) return true;
        }
    }

    return false;
}

function multiPolygonIntersectsBufferedMultiLine(multiPolygon, multiLine, radius) {
    for (var i = 0; i < multiLine.length; i++) {
        var line = multiLine[i];

        for (var j = 0; j < multiPolygon.length; j++) {
            var polygon = multiPolygon[j];

            if (polygon.length >= 3) {
                for (var k = 0; k < line.length; k++) {
                    if (polygonContainsPoint(polygon, line[k])) return true;
                }
            }

            if (lineIntersectsBufferedLine(polygon, line, radius)) return true;
        }
    }
    return false;
}

function lineIntersectsBufferedLine(lineA, lineB, radius) {

    if (lineA.length > 1) {
        if (lineIntersectsLine(lineA, lineB)) return true;

        // Check whether any point in either line is within radius of the other line
        for (var j = 0; j < lineB.length; j++) {
            if (pointIntersectsBufferedLine(lineB[j], lineA, radius)) return true;
        }
    }

    for (var k = 0; k < lineA.length; k++) {
        if (pointIntersectsBufferedLine(lineA[k], lineB, radius)) return true;
    }

    return false;
}

function lineIntersectsLine(lineA, lineB) {
    for (var i = 0; i < lineA.length - 1; i++) {
        var a0 = lineA[i];
        var a1 = lineA[i + 1];
        for (var j = 0; j < lineB.length - 1; j++) {
            var b0 = lineB[j];
            var b1 = lineB[j + 1];
            if (lineSegmentIntersectsLineSegment(a0, a1, b0, b1)) return true;
        }
    }
    return false;
}


// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/
function isCounterClockwise(a, b, c) {
    return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);
}

function lineSegmentIntersectsLineSegment(a0, a1, b0, b1) {
    return isCounterClockwise(a0, b0, b1) !== isCounterClockwise(a1, b0, b1) &&
        isCounterClockwise(a0, a1, b0) !== isCounterClockwise(a0, a1, b1);
}

function pointIntersectsBufferedLine(p, line, radius) {
    var radiusSquared = radius * radius;

    if (line.length === 1) return p.distSqr(line[0]) < radiusSquared;

    for (var i = 1; i < line.length; i++) {
        // Find line segments that have a distance <= radius^2 to p
        // In that case, we treat the line as "containing point p".
        var v = line[i - 1], w = line[i];
        if (distToSegmentSquared(p, v, w) < radiusSquared) return true;
    }
    return false;
}

// Code from http://stackoverflow.com/a/1501725/331379.
function distToSegmentSquared(p, v, w) {
    var l2 = v.distSqr(w);
    if (l2 === 0) return p.distSqr(v);
    var t = ((p.x - v.x) * (w.x - v.x) + (p.y - v.y) * (w.y - v.y)) / l2;
    if (t < 0) return p.distSqr(v);
    if (t > 1) return p.distSqr(w);
    return p.distSqr(w.sub(v)._mult(t)._add(v));
}

// point in polygon ray casting algorithm
function multiPolygonContainsPoint(rings, p) {
    var c = false,
        ring, p1, p2;

    for (var k = 0; k < rings.length; k++) {
        ring = rings[k];
        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
            p1 = ring[i];
            p2 = ring[j];
            if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
                c = !c;
            }
        }
    }
    return c;
}

function polygonContainsPoint(ring, p) {
    var c = false;
    for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
        var p1 = ring[i];
        var p2 = ring[j];
        if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
            c = !c;
        }
    }
    return c;
}

},{}],414:[function(require,module,exports){
'use strict';

module.exports = LRUCache;

/**
 * A [least-recently-used cache](http://en.wikipedia.org/wiki/Cache_algorithms)
 * with hash lookup made possible by keeping a list of keys in parallel to
 * an array of dictionary of values
 *
 * @param {number} max number of permitted values
 * @param {Function} onRemove callback called with items when they expire
 * @private
 */
function LRUCache(max, onRemove) {
    this.max = max;
    this.onRemove = onRemove;
    this.reset();
}

/**
 * Clear the cache
 *
 * @returns {LRUCache} this cache
 * @private
 */
LRUCache.prototype.reset = function() {
    for (var key in this.data) {
        this.onRemove(this.data[key]);
    }

    this.data = {};
    this.order = [];

    return this;
};

/**
 * Add a key, value combination to the cache, trimming its size if this pushes
 * it over max length.
 *
 * @param {string} key lookup key for the item
 * @param {*} data any value
 *
 * @returns {LRUCache} this cache
 * @private
 */
LRUCache.prototype.add = function(key, data) {

    if (this.has(key)) {
        this.order.splice(this.order.indexOf(key), 1);
        this.data[key] = data;
        this.order.push(key);

    } else {
        this.data[key] = data;
        this.order.push(key);

        if (this.order.length > this.max) {
            var removedData = this.get(this.order[0]);
            if (removedData) this.onRemove(removedData);
        }
    }

    return this;
};

/**
 * Determine whether the value attached to `key` is present
 *
 * @param {string} key the key to be looked-up
 * @returns {boolean} whether the cache has this value
 * @private
 */
LRUCache.prototype.has = function(key) {
    return key in this.data;
};

/**
 * List all keys in the cache
 *
 * @returns {Array<string>} an array of keys in this cache.
 * @private
 */
LRUCache.prototype.keys = function() {
    return this.order;
};

/**
 * Get the value attached to a specific key. If the key is not found,
 * returns `null`
 *
 * @param {string} key the key to look up
 * @returns {*} the data, or null if it isn't found
 * @private
 */
LRUCache.prototype.get = function(key) {
    if (!this.has(key)) { return null; }

    var data = this.data[key];

    delete this.data[key];
    this.order.splice(this.order.indexOf(key), 1);

    return data;
};

/**
 * Change the max size of the cache.
 *
 * @param {number} max the max size of the cache
 * @returns {LRUCache} this cache
 * @private
 */
LRUCache.prototype.setMaxSize = function(max) {
    this.max = max;

    while (this.order.length > this.max) {
        var removedData = this.get(this.order[0]);
        if (removedData) this.onRemove(removedData);
    }

    return this;
};

},{}],415:[function(require,module,exports){
'use strict';

var config = require('./config');
var browser = require('./browser');
var URL = require('url');
var util = require('./util');

function normalizeURL(url, pathPrefix, accessToken) {
    accessToken = accessToken || config.ACCESS_TOKEN;

    if (!accessToken && config.REQUIRE_ACCESS_TOKEN) {
        throw new Error('An API access token is required to use Mapbox GL. ' +
            'See https://www.mapbox.com/developers/api/#access-tokens');
    }

    url = url.replace(/^mapbox:\/\//, config.API_URL + pathPrefix);
    url += url.indexOf('?') !== -1 ? '&access_token=' : '?access_token=';

    if (config.REQUIRE_ACCESS_TOKEN) {
        if (accessToken[0] === 's') {
            throw new Error('Use a public access token (pk.*) with Mapbox GL JS, not a secret access token (sk.*). ' +
                'See https://www.mapbox.com/developers/api/#access-tokens');
        }

        url += accessToken;
    }

    return url;
}

module.exports.normalizeStyleURL = function(url, accessToken) {
    var urlObject = URL.parse(url);

    if (urlObject.protocol !== 'mapbox:') {
        return url;
    } else {
        return normalizeURL(
            'mapbox:/' + urlObject.pathname + formatQuery(urlObject.query),
            '/styles/v1/',
            accessToken
        );
    }
};

module.exports.normalizeSourceURL = function(url, accessToken) {
    var urlObject = URL.parse(url);

    if (urlObject.protocol !== 'mapbox:') {
        return url;
    } else {
        // TileJSON requests need a secure flag appended to their URLs so
        // that the server knows to send SSL-ified resource references.
        return normalizeURL(
            url + '.json',
            '/v4/',
            accessToken
        ) + '&secure';
    }

};

module.exports.normalizeGlyphsURL = function(url, accessToken) {
    var urlObject = URL.parse(url);

    if (urlObject.protocol !== 'mapbox:') {
        return url;
    } else {
        var user = urlObject.pathname.split('/')[1];
        return normalizeURL(
            'mapbox://' + user + '/{fontstack}/{range}.pbf' + formatQuery(urlObject.query),
            '/fonts/v1/',
            accessToken
        );
    }
};

module.exports.normalizeSpriteURL = function(url, format, extension, accessToken) {
    var urlObject = URL.parse(url);

    if (urlObject.protocol !== 'mapbox:') {
        urlObject.pathname += format + extension;
        return URL.format(urlObject);
    } else {
        return normalizeURL(
            'mapbox:/' + urlObject.pathname + '/sprite' + format + extension + formatQuery(urlObject.query),
            '/styles/v1/',
            accessToken
        );
    }
};

module.exports.normalizeTileURL = function(tileURL, sourceURL, tileSize) {
    var tileURLObject = URL.parse(tileURL, true);
    if (!sourceURL) return tileURL;
    var sourceURLObject = URL.parse(sourceURL);
    if (sourceURLObject.protocol !== 'mapbox:') return tileURL;

    // The v4 mapbox tile API supports 512x512 image tiles only when @2x
    // is appended to the tile URL. If `tileSize: 512` is specified for
    // a Mapbox raster source force the @2x suffix even if a non hidpi
    // device.

    var extension = browser.supportsWebp ? '.webp' : '$1';
    var resolution = (browser.devicePixelRatio >= 2 || tileSize === 512) ? '@2x' : '';

    return URL.format({
        protocol: tileURLObject.protocol,
        hostname: tileURLObject.hostname,
        pathname: tileURLObject.pathname.replace(/(\.(?:png|jpg)\d*)/, resolution + extension),
        query: replaceTempAccessToken(tileURLObject.query)
    });
};

function formatQuery(query) {
    return (query ? '?' + query : '');
}

function replaceTempAccessToken(query) {
    if (query.access_token && query.access_token.slice(0, 3) === 'tk.') {
        return util.extend({}, query, {
            'access_token': config.ACCESS_TOKEN
        });
    } else {
        return query;
    }
}

},{"./browser":402,"./config":407,"./util":418,"url":996}],416:[function(require,module,exports){
'use strict';

// Note: all "sizes" are measured in bytes

var assert = require('assert');

module.exports = StructArrayType;

var viewTypes = {
    'Int8': Int8Array,
    'Uint8': Uint8Array,
    'Uint8Clamped': Uint8ClampedArray,
    'Int16': Int16Array,
    'Uint16': Uint16Array,
    'Int32': Int32Array,
    'Uint32': Uint32Array,
    'Float32': Float32Array,
    'Float64': Float64Array
};

/**
 * @typedef StructMember
 * @private
 * @property {string} name
 * @property {string} type
 * @property {number} components
 */

var structArrayTypeCache = {};

/**
 * `StructArrayType` is used to create new `StructArray` types.
 *
 * `StructArray` provides an abstraction over `ArrayBuffer` and `TypedArray` making it behave like
 * an array of typed structs. A StructArray is comprised of elements. Each element has a set of
 * members that are defined when the `StructArrayType` is created.
 *
 * StructArrays useful for creating large arrays that:
 * - can be transferred from workers as a Transferable object
 * - can be copied cheaply
 * - use less memory for lower-precision members
 * - can be used as buffers in WebGL.
 *
 * @class StructArrayType
 * @param {Array.<StructMember>}
 * @param options
 * @param {number} options.alignment Use `4` to align members to 4 byte boundaries. Default is 1.
 *
 * @example
 *
 * var PointArrayType = new StructArrayType({
 *  members: [
 *      { type: 'Int16', name: 'x' },
 *      { type: 'Int16', name: 'y' }
 *  ]});
 *
 *  var pointArray = new PointArrayType();
 *  pointArray.emplaceBack(10, 15);
 *  pointArray.emplaceBack(20, 35);
 *
 *  point = pointArray.get(0);
 *  assert(point.x === 10);
 *  assert(point.y === 15);
 *
 * @private
 */
function StructArrayType(options) {

    var key = JSON.stringify(options);
    if (structArrayTypeCache[key]) {
        return structArrayTypeCache[key];
    }

    if (options.alignment === undefined) options.alignment = 1;

    function StructType() {
        Struct.apply(this, arguments);
    }

    StructType.prototype = Object.create(Struct.prototype);

    var offset = 0;
    var maxSize = 0;
    var usedTypes = ['Uint8'];

    StructType.prototype.members = options.members.map(function(member) {
        member = {
            name: member.name,
            type: member.type,
            components: member.components || 1
        };

        assert(member.name.length);
        assert(member.type in viewTypes);

        if (usedTypes.indexOf(member.type) < 0) usedTypes.push(member.type);

        var typeSize = sizeOf(member.type);
        maxSize = Math.max(maxSize, typeSize);
        member.offset = offset = align(offset, Math.max(options.alignment, typeSize));

        for (var c = 0; c < member.components; c++) {
            Object.defineProperty(StructType.prototype, member.name + (member.components === 1 ? '' : c), {
                get: createGetter(member, c),
                set: createSetter(member, c)
            });
        }

        offset += typeSize * member.components;

        return member;
    });

    StructType.prototype.alignment = options.alignment;
    StructType.prototype.size = align(offset, Math.max(maxSize, options.alignment));

    function StructArrayType() {
        StructArray.apply(this, arguments);
        this.members = StructType.prototype.members;
    }

    StructArrayType.serialize = serializeStructArrayType;

    StructArrayType.prototype = Object.create(StructArray.prototype);
    StructArrayType.prototype.StructType = StructType;
    StructArrayType.prototype.bytesPerElement = StructType.prototype.size;
    StructArrayType.prototype.emplaceBack = createEmplaceBack(StructType.prototype.members, StructType.prototype.size);
    StructArrayType.prototype._usedTypes = usedTypes;


    structArrayTypeCache[key] = StructArrayType;

    return StructArrayType;
}

/**
 * Serialize the StructArray type. This serializes the *type* not an instance of the type.
 * @private
 */
function serializeStructArrayType() {
    return {
        members: this.prototype.StructType.prototype.members,
        alignment: this.prototype.StructType.prototype.alignment,
        bytesPerElement: this.prototype.bytesPerElement
    };
}


function align(offset, size) {
    return Math.ceil(offset / size) * size;
}

function sizeOf(type) {
    return viewTypes[type].BYTES_PER_ELEMENT;
}

function getArrayViewName(type) {
    return type.toLowerCase();
}


/*
 * > I saw major perf gains by shortening the source of these generated methods (i.e. renaming
 * > elementIndex to i) (likely due to v8 inlining heuristics).
 * - lucaswoj
 */
function createEmplaceBack(members, bytesPerElement) {
    var usedTypeSizes = [];
    var argNames = [];
    var body = '' +
    'var i = this.length;\n' +
    'this.resize(this.length + 1);\n';

    for (var m = 0; m < members.length; m++) {
        var member = members[m];
        var size = sizeOf(member.type);

        // array offsets to the end of current data for each type size
        // var o{SIZE} = i * ROUNDED(bytesPerElement / size);
        if (usedTypeSizes.indexOf(size) < 0) {
            usedTypeSizes.push(size);
            body += 'var o' + size.toFixed(0) + ' = i * ' + (bytesPerElement / size).toFixed(0) + ';\n';
        }

        for (var c = 0; c < member.components; c++) {
            // arguments v0, v1, v2, ... are, in order, the components of
            // member 0, then the components of member 1, etc.
            var argName = 'v' + argNames.length;
            // The index for `member` component `c` into the appropriate type array is:
            // this.{TYPE}[o{SIZE} + MEMBER_OFFSET + {c}] = v{X}
            // where MEMBER_OFFSET = ROUND(member.offset / size) is the per-element
            // offset of this member into the array
            var index = 'o' + size.toFixed(0) + ' + ' + (member.offset / size + c).toFixed(0);
            body += 'this.' + getArrayViewName(member.type) + '[' + index + '] = ' + argName + ';\n';
            argNames.push(argName);
        }
    }

    body += 'return i;';

    return new Function(argNames, body);
}

function createMemberComponentString(member, component) {
    var elementOffset = 'this._pos' + sizeOf(member.type).toFixed(0);
    var componentOffset = (member.offset / sizeOf(member.type) + component).toFixed(0);
    var index = elementOffset + ' + ' + componentOffset;
    return 'this._structArray.' + getArrayViewName(member.type) + '[' + index + ']';

}

function createGetter(member, c) {
    return new Function([], 'return ' + createMemberComponentString(member, c) + ';');
}

function createSetter(member, c) {
    return new Function(['x'], createMemberComponentString(member, c) + ' = x;');
}

/**
 * @class Struct
 * @param {StructArray} structArray The StructArray the struct is stored in
 * @param {number} index The index of the struct in the StructArray.
 * @private
 */
function Struct(structArray, index) {
    this._structArray = structArray;
    this._pos1 = index * this.size;
    this._pos2 = this._pos1 / 2;
    this._pos4 = this._pos1 / 4;
    this._pos8 = this._pos1 / 8;
}

/**
 * @class StructArray
 * The StructArray class is inherited by the custom StructArrayType classes created with
 * `new StructArrayType(members, options)`.
 * @private
 */
function StructArray(serialized) {
    if (serialized !== undefined) {
    // Create from an serialized StructArray
        this.arrayBuffer = serialized.arrayBuffer;
        this.length = serialized.length;
        this.capacity = this.arrayBuffer.byteLength / this.bytesPerElement;
        this._refreshViews();

    // Create a new StructArray
    } else {
        this.capacity = -1;
        this.resize(0);
    }
}

/**
 * @property {number}
 * @private
 * @readonly
 */
StructArray.prototype.DEFAULT_CAPACITY = 128;

/**
 * @property {number}
 * @private
 * @readonly
 */
StructArray.prototype.RESIZE_MULTIPLIER = 5;

/**
 * Serialize this StructArray instance
 * @private
 */
StructArray.prototype.serialize = function() {
    this.trim();
    return {
        length: this.length,
        arrayBuffer: this.arrayBuffer
    };
};

/**
 * Return the Struct at the given location in the array.
 * @private
 * @param {number} index The index of the element.
 */
StructArray.prototype.get = function(index) {
    return new this.StructType(this, index);
};

/**
 * Resize the array to discard unused capacity.
 * @private
 */
StructArray.prototype.trim = function() {
    if (this.length !== this.capacity) {
        this.capacity = this.length;
        this.arrayBuffer = this.arrayBuffer.slice(0, this.length * this.bytesPerElement);
        this._refreshViews();
    }
};

/**
 * Resize the array.
 * If `n` is greater than the current length then additional elements with undefined values are added.
 * If `n` is less than the current length then the array will be reduced to the first `n` elements.
 * @param {number} n The new size of the array.
 */
StructArray.prototype.resize = function(n) {
    this.length = n;
    if (n > this.capacity) {
        this.capacity = Math.max(n, Math.floor(this.capacity * this.RESIZE_MULTIPLIER), this.DEFAULT_CAPACITY);
        this.arrayBuffer = new ArrayBuffer(this.capacity * this.bytesPerElement);

        var oldUint8Array = this.uint8;
        this._refreshViews();
        if (oldUint8Array) this.uint8.set(oldUint8Array);
    }
};

/**
 * Create TypedArray views for the current ArrayBuffer.
 * @private
 */
StructArray.prototype._refreshViews = function() {
    for (var t = 0; t < this._usedTypes.length; t++) {
        var type = this._usedTypes[t];
        this[getArrayViewName(type)] = new viewTypes[type](this.arrayBuffer);
    }
};

/**
 * Output the `StructArray` between indices `startIndex` and `endIndex` as an array of `StructTypes` to enable sorting
 * @param {number} startIndex
 * @param {number} endIndex
 * @private
 */
StructArray.prototype.toArray = function(startIndex, endIndex) {
    var array = [];

    for (var i = startIndex; i < endIndex; i++) {
        var struct = this.get(i);
        array.push(struct);
    }

    return array;
};

},{"assert":9}],417:[function(require,module,exports){
'use strict';

module.exports = resolveTokens;

/**
 * Replace tokens in a string template with values in an object
 *
 * @param {Object} properties a key/value relationship between tokens and replacements
 * @param {string} text the template string
 * @returns {string} the template with tokens replaced
 * @private
 */
function resolveTokens(properties, text) {
    return text.replace(/{([^{}]+)}/g, function(match, key) {
        return key in properties ? properties[key] : '';
    });
}

},{}],418:[function(require,module,exports){
'use strict';

var UnitBezier = require('unitbezier');
var Coordinate = require('../geo/coordinate');

/**
 * Given a value `t` that varies between 0 and 1, return
 * an interpolation function that eases between 0 and 1 in a pleasing
 * cubic in-out fashion.
 *
 * @param {number} t input
 * @returns {number} input
 * @private
 */
exports.easeCubicInOut = function (t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t,
        t3 = t2 * t;
    return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);
};

/**
 * Given given (x, y), (x1, y1) control points for a bezier curve,
 * return a function that interpolates along that curve.
 *
 * @param {number} p1x control point 1 x coordinate
 * @param {number} p1y control point 1 y coordinate
 * @param {number} p2x control point 2 x coordinate
 * @param {number} p2y control point 2 y coordinate
 * @returns {Function} interpolator: receives number value, returns
 * number value.
 * @private
 */
exports.bezier = function(p1x, p1y, p2x, p2y) {
    var bezier = new UnitBezier(p1x, p1y, p2x, p2y);
    return function(t) {
        return bezier.solve(t);
    };
};

/**
 * A default bezier-curve powered easing function with
 * control points (0.25, 0.1) and (0.25, 1)
 *
 * @param {number} t
 * @returns {number} output
 * @private
 */
exports.ease = exports.bezier(0.25, 0.1, 0.25, 1);

/**
 * constrain n to the given range via min + max
 *
 * @param {number} n value
 * @param {number} min the minimum value to be returned
 * @param {number} max the maximum value to be returned
 * @returns {number} the clamped value
 * @private
 */
exports.clamp = function (n, min, max) {
    return Math.min(max, Math.max(min, n));
};

/*
 * constrain n to the given range, excluding the minimum, via modular arithmetic
 * @param {number} n value
 * @param {number} min the minimum value to be returned, exclusive
 * @param {number} max the maximum value to be returned, inclusive
 * @returns {number} constrained number
 * @private
 */
exports.wrap = function (n, min, max) {
    var d = max - min;
    var w = ((n - min) % d + d) % d + min;
    return (w === min) ? max : w;
};

/*
 * return the first non-null and non-undefined argument to this function.
 * @returns {*} argument
 * @private
 */
exports.coalesce = function() {
    for (var i = 0; i < arguments.length; i++) {
        var arg = arguments[i];
        if (arg !== null && arg !== undefined)
            return arg;
    }
};

/*
 * Call an asynchronous function on an array of arguments,
 * calling `callback` with the completed results of all calls.
 *
 * @param {Array<*>} array input to each call of the async function.
 * @param {Function} fn an async function with signature (data, callback)
 * @param {Function} callback a callback run after all async work is done.
 * called with an array, containing the results of each async call.
 * @returns {undefined}
 * @private
 */
exports.asyncAll = function (array, fn, callback) {
    if (!array.length) { return callback(null, []); }
    var remaining = array.length;
    var results = new Array(array.length);
    var error = null;
    array.forEach(function (item, i) {
        fn(item, function (err, result) {
            if (err) error = err;
            results[i] = result;
            if (--remaining === 0) callback(error, results);
        });
    });
};

/*
 * Compute the difference between the keys in one object and the keys
 * in another object.
 *
 * @param {Object} obj
 * @param {Object} other
 * @returns {Array<string>} keys difference
 * @private
 */
exports.keysDifference = function (obj, other) {
    var difference = [];
    for (var i in obj) {
        if (!(i in other)) {
            difference.push(i);
        }
    }
    return difference;
};

/**
 * Given a destination object and optionally many source objects,
 * copy all properties from the source objects into the destination.
 * The last source object given overrides properties from previous
 * source objects.
 * @param {Object} dest destination object
 * @param {...Object} sources sources from which properties are pulled
 * @returns {Object} dest
 * @private
 */
exports.extend = function (dest) {
    for (var i = 1; i < arguments.length; i++) {
        var src = arguments[i];
        for (var k in src) {
            dest[k] = src[k];
        }
    }
    return dest;
};

/**
 * Extend a destination object with all properties of the src object,
 * using defineProperty instead of simple assignment.
 * @param {Object} dest
 * @param {Object} src
 * @returns {Object} dest
 * @private
 */
exports.extendAll = function (dest, src) {
    for (var i in src) {
        Object.defineProperty(dest, i, Object.getOwnPropertyDescriptor(src, i));
    }
    return dest;
};

/**
 * Extend a parent's prototype with all properties in a properties
 * object.
 *
 * @param {Object} parent
 * @param {Object} props
 * @returns {Object}
 * @private
 */
exports.inherit = function (parent, props) {
    var parentProto = typeof parent === 'function' ? parent.prototype : parent,
        proto = Object.create(parentProto);
    exports.extendAll(proto, props);
    return proto;
};

/**
 * Given an object and a number of properties as strings, return version
 * of that object with only those properties.
 *
 * @param {Object} src the object
 * @param {Array<string>} properties an array of property names chosen
 * to appear on the resulting object.
 * @returns {Object} object with limited properties.
 * @example
 * var foo = { name: 'Charlie', age: 10 };
 * var justName = pick(foo, ['name']);
 * // justName = { name: 'Charlie' }
 * @private
 */
exports.pick = function (src, properties) {
    var result = {};
    for (var i = 0; i < properties.length; i++) {
        var k = properties[i];
        if (k in src) {
            result[k] = src[k];
        }
    }
    return result;
};

var id = 1;

/**
 * Return a unique numeric id, starting at 1 and incrementing with
 * each call.
 *
 * @returns {number} unique numeric id.
 * @private
 */
exports.uniqueId = function () {
    return id++;
};

/**
 * Create a version of `fn` that is only called `time` milliseconds
 * after its last invocation
 *
 * @param {Function} fn the function to be debounced
 * @param {number} time millseconds after which the function will be invoked
 * @returns {Function} debounced function
 * @private
 */
exports.debounce = function(fn, time) {
    var timer, args;

    return function() {
        args = arguments;
        clearTimeout(timer);

        timer = setTimeout(function() {
            fn.apply(null, args);
        }, time);
    };
};

/**
 * Given an array of member function names as strings, replace all of them
 * with bound versions that will always refer to `context` as `this`. This
 * is useful for classes where otherwise event bindings would reassign
 * `this` to the evented object or some other value: this lets you ensure
 * the `this` value always.
 *
 * @param {Array<string>} fns list of member function names
 * @param {*} context the context value
 * @returns {undefined} changes functions in-place
 * @example
 * function MyClass() {
 *   bindAll(['ontimer'], this);
 *   this.name = 'Tom';
 * }
 * MyClass.prototype.ontimer = function() {
 *   alert(this.name);
 * };
 * var myClass = new MyClass();
 * setTimeout(myClass.ontimer, 100);
 * @private
 */
exports.bindAll = function(fns, context) {
    fns.forEach(function(fn) {
        if (!context[fn]) { return; }
        context[fn] = context[fn].bind(context);
    });
};

/**
 * Given a class, bind all of the methods that look like handlers: that
 * begin with _on, and bind them to the class.
 *
 * @param {Object} context an object with methods
 * @private
 */
exports.bindHandlers = function(context) {
    for (var i in context) {
        if (typeof context[i] === 'function' && i.indexOf('_on') === 0) {
            context[i] = context[i].bind(context);
        }
    }
};

/**
 * Set the 'options' property on `obj` with properties
 * from the `options` argument. Properties in the `options`
 * object will override existing properties.
 *
 * @param {Object} obj destination object
 * @param {Object} options object of override options
 * @returns {Object} derived options object.
 * @private
 */
exports.setOptions = function(obj, options) {
    if (!obj.hasOwnProperty('options')) {
        obj.options = obj.options ? Object.create(obj.options) : {};
    }
    for (var i in options) {
        obj.options[i] = options[i];
    }
    return obj.options;
};

/**
 * Given a list of coordinates, get their center as a coordinate.
 * @param {Array<Coordinate>} coords
 * @returns {Coordinate} centerpoint
 * @private
 */
exports.getCoordinatesCenter = function(coords) {
    var minX = Infinity;
    var minY = Infinity;
    var maxX = -Infinity;
    var maxY = -Infinity;

    for (var i = 0; i < coords.length; i++) {
        minX = Math.min(minX, coords[i].column);
        minY = Math.min(minY, coords[i].row);
        maxX = Math.max(maxX, coords[i].column);
        maxY = Math.max(maxY, coords[i].row);
    }

    var dx = maxX - minX;
    var dy = maxY - minY;
    var dMax = Math.max(dx, dy);
    return new Coordinate((minX + maxX) / 2, (minY + maxY) / 2, 0)
        .zoomTo(Math.floor(-Math.log(dMax) / Math.LN2));
};

/**
 * Determine if a string ends with a particular substring
 * @param {string} string
 * @param {string} suffix
 * @returns {boolean}
 * @private
 */
exports.endsWith = function(string, suffix) {
    return string.indexOf(suffix, string.length - suffix.length) !== -1;
};

/**
 * Determine if a string starts with a particular substring
 * @param {string} string
 * @param {string} prefix
 * @returns {boolean}
 * @private
 */
exports.startsWith = function(string, prefix) {
    return string.indexOf(prefix) === 0;
};

/**
 * Create an object by mapping all the values of an existing object while
 * preserving their keys.
 * @param {Object} input
 * @param {Function} iterator
 * @returns {Object}
 * @private
 */
exports.mapObject = function(input, iterator, context) {
    var output = {};
    for (var key in input) {
        output[key] = iterator.call(context || this, input[key], key, input);
    }
    return output;
};

/**
 * Create an object by filtering out values of an existing object
 * @param {Object} input
 * @param {Function} iterator
 * @returns {Object}
 * @private
 */
exports.filterObject = function(input, iterator, context) {
    var output = {};
    for (var key in input) {
        if (iterator.call(context || this, input[key], key, input)) {
            output[key] = input[key];
        }
    }
    return output;
};

/**
 * Deeply compares two object literals.
 * @param {Object} obj1
 * @param {Object} obj2
 * @returns {boolean}
 * @private
 */
exports.deepEqual = function deepEqual(a, b) {
    if (Array.isArray(a)) {
        if (!Array.isArray(b) || a.length !== b.length) return false;
        for (var i = 0; i < a.length; i++) {
            if (!deepEqual(a[i], b[i])) return false;
        }
        return true;
    }
    if (typeof a === 'object' && a !== null && b !== null) {
        if (!(typeof b === 'object')) return false;
        var keys = Object.keys(a);
        if (keys.length !== Object.keys(b).length) return false;
        for (var key in a) {
            if (!deepEqual(a[key], b[key])) return false;
        }
        return true;
    }
    return a === b;
};

/**
 * Deeply clones two objects.
 * @param {Object} obj1
 * @param {Object} obj2
 * @returns {boolean}
 * @private
 */
exports.clone = function deepEqual(input) {
    if (Array.isArray(input)) {
        return input.map(exports.clone);
    } else if (typeof input === 'object') {
        return exports.mapObject(input, exports.clone);
    } else {
        return input;
    }
};

/**
 * Check if two arrays have at least one common element.
 * @param {Array} a
 * @param {Array} b
 * @returns {boolean}
 * @private
 */
exports.arraysIntersect = function(a, b) {
    for (var l = 0; l < a.length; l++) {
        if (b.indexOf(a[l]) >= 0) return true;
    }
    return false;
};

var warnOnceHistory = {};
exports.warnOnce = function(message) {
    if (!warnOnceHistory[message]) {
        // console isn't defined in some WebWorkers, see #2558
        if (typeof console !== "undefined") console.warn(message);
        warnOnceHistory[message] = true;
    }
};

},{"../geo/coordinate":314,"unitbezier":995}],419:[function(require,module,exports){
'use strict';

module.exports = Feature;

function Feature(vectorTileFeature, z, x, y) {
    this._vectorTileFeature = vectorTileFeature;
    vectorTileFeature._z = z;
    vectorTileFeature._x = x;
    vectorTileFeature._y = y;

    this.properties = vectorTileFeature.properties;

    if (vectorTileFeature.id != null) {
        this.id = vectorTileFeature.id;
    }
}

Feature.prototype = {
    type: "Feature",

    get geometry() {
        if (this._geometry === undefined) {
            this._geometry = this._vectorTileFeature.toGeoJSON(
                this._vectorTileFeature._x,
                this._vectorTileFeature._y,
                this._vectorTileFeature._z).geometry;
        }
        return this._geometry;
    },

    set geometry(g) {
        this._geometry = g;
    },

    toJSON: function() {
        var json = {};
        for (var i in this) {
            if (i === '_geometry' || i === '_vectorTileFeature' || i === 'toJSON') continue;
            json[i] = this[i];
        }
        return json;
    }
};

},{}],420:[function(require,module,exports){
module.exports={
  "_args": [
    [
      {
        "raw": "mapbox-gl@^0.22.0",
        "scope": null,
        "escapedName": "mapbox-gl",
        "name": "mapbox-gl",
        "rawSpec": "^0.22.0",
        "spec": ">=0.22.0 <0.23.0",
        "type": "range"
      },
      "/Users/ccdpandhare/Desktop/GSoC/image-sequencer/node_modules/plotly.js"
    ]
  ],
  "_from": "mapbox-gl@>=0.22.0 <0.23.0",
  "_id": "mapbox-gl@0.22.1",
  "_inCache": true,
  "_location": "/mapbox-gl",
  "_nodeVersion": "4.4.5",
  "_npmOperationalInternal": {
    "host": "packages-12-west.internal.npmjs.com",
    "tmp": "tmp/mapbox-gl-0.22.1.tgz_1471549891670_0.8762630566488951"
  },
  "_npmUser": {
    "name": "lucaswoj",
    "email": "lucas@lucaswoj.com"
  },
  "_npmVersion": "2.15.5",
  "_phantomChildren": {},
  "_requested": {
    "raw": "mapbox-gl@^0.22.0",
    "scope": null,
    "escapedName": "mapbox-gl",
    "name": "mapbox-gl",
    "rawSpec": "^0.22.0",
    "spec": ">=0.22.0 <0.23.0",
    "type": "range"
  },
  "_requiredBy": [
    "/plotly.js"
  ],
  "_resolved": "https://registry.npmjs.org/mapbox-gl/-/mapbox-gl-0.22.1.tgz",
  "_shasum": "92a965547d4c2f24c22cbc487eeda48694cb627a",
  "_shrinkwrap": null,
  "_spec": "mapbox-gl@^0.22.0",
  "_where": "/Users/ccdpandhare/Desktop/GSoC/image-sequencer/node_modules/plotly.js",
  "browser": {
    "./js/util/ajax.js": "./js/util/browser/ajax.js",
    "./js/util/browser.js": "./js/util/browser/browser.js",
    "./js/util/canvas.js": "./js/util/browser/canvas.js",
    "./js/util/dom.js": "./js/util/browser/dom.js",
    "./js/util/web_worker.js": "./js/util/browser/web_worker.js"
  },
  "bugs": {
    "url": "https://github.com/mapbox/mapbox-gl-js/issues"
  },
  "dependencies": {
    "csscolorparser": "^1.0.2",
    "earcut": "^2.0.3",
    "feature-filter": "^2.2.0",
    "geojson-rewind": "^0.1.0",
    "geojson-vt": "^2.4.0",
    "gl-matrix": "^2.3.1",
    "grid-index": "^1.0.0",
    "mapbox-gl-function": "^1.2.1",
    "mapbox-gl-shaders": "github:mapbox/mapbox-gl-shaders#de2ab007455aa2587c552694c68583f94c9f2747",
    "mapbox-gl-style-spec": "github:mapbox/mapbox-gl-style-spec#83b1a3e5837d785af582efd5ed1a212f2df6a4ae",
    "mapbox-gl-supported": "^1.2.0",
    "pbf": "^1.3.2",
    "pngjs": "^2.2.0",
    "point-geometry": "^0.0.0",
    "quickselect": "^1.0.0",
    "request": "^2.39.0",
    "resolve-url": "^0.2.1",
    "shelf-pack": "^1.0.0",
    "supercluster": "^2.0.1",
    "unassertify": "^2.0.0",
    "unitbezier": "^0.0.0",
    "vector-tile": "^1.3.0",
    "vt-pbf": "^2.0.2",
    "webworkify": "^1.3.0",
    "whoots-js": "^2.0.0"
  },
  "description": "A WebGL interactive maps library",
  "devDependencies": {
    "babel-preset-react": "^6.11.1",
    "babelify": "^7.3.0",
    "benchmark": "~2.1.0",
    "browserify": "^13.0.0",
    "clipboard": "^1.5.12",
    "concat-stream": "1.5.1",
    "coveralls": "^2.11.8",
    "doctrine": "^1.2.1",
    "documentation": "https://github.com/documentationjs/documentation/archive/bb41619c734e59ef3fbc3648610032efcfdaaace.tar.gz",
    "documentation-theme-utils": "3.0.0",
    "envify": "^3.4.0",
    "eslint": "^2.5.3",
    "eslint-config-mourner": "^2.0.0",
    "eslint-plugin-html": "^1.5.1",
    "gl": "^4.0.1",
    "handlebars": "4.0.5",
    "highlight.js": "9.3.0",
    "istanbul": "^0.4.2",
    "json-loader": "^0.5.4",
    "lodash": "^4.13.1",
    "mapbox-gl-test-suite": "github:mapbox/mapbox-gl-test-suite#7babab52fb02788ebbc38384139bf350e8e38552",
    "memory-fs": "^0.3.0",
    "minifyify": "^7.0.1",
    "npm-run-all": "^3.0.0",
    "nyc": "6.4.0",
    "proxyquire": "^1.7.9",
    "remark": "4.2.2",
    "remark-html": "3.0.0",
    "sinon": "^1.15.4",
    "st": "^1.2.0",
    "tap": "^5.7.0",
    "transform-loader": "^0.2.3",
    "unist-util-visit": "1.1.0",
    "vinyl": "1.1.1",
    "vinyl-fs": "2.4.3",
    "watchify": "^3.7.0",
    "webpack": "^1.13.1",
    "webworkify-webpack": "^1.1.3"
  },
  "directories": {},
  "dist": {
    "shasum": "92a965547d4c2f24c22cbc487eeda48694cb627a",
    "tarball": "https://registry.npmjs.org/mapbox-gl/-/mapbox-gl-0.22.1.tgz"
  },
  "engines": {
    "node": ">=4.0.0"
  },
  "gitHead": "13a9015341f0602ccb55c98c53079838ad4b70b5",
  "homepage": "https://github.com/mapbox/mapbox-gl-js#readme",
  "license": "BSD-3-Clause",
  "main": "js/mapbox-gl.js",
  "maintainers": [
    {
      "name": "aaronlidman",
      "email": "aaronlidman@gmail.com"
    },
    {
      "name": "ajashton",
      "email": "aj.ashton@gmail.com"
    },
    {
      "name": "ansis",
      "email": "ansis.brammanis@gmail.com"
    },
    {
      "name": "bergwerkgis",
      "email": "wb@bergwerk-gis.at"
    },
    {
      "name": "bhousel",
      "email": "bryan@mapbox.com"
    },
    {
      "name": "bsudekum",
      "email": "bobby@mapbox.com"
    },
    {
      "name": "camilleanne",
      "email": "camille@mapbox.com"
    },
    {
      "name": "dnomadb",
      "email": "damon@mapbox.com"
    },
    {
      "name": "dthompson",
      "email": "dthompson@gmail.com"
    },
    {
      "name": "emilymcafee",
      "email": "emily@mapbox.com"
    },
    {
      "name": "flippmoke",
      "email": "flippmoke@gmail.com"
    },
    {
      "name": "freenerd",
      "email": "spam@freenerd.de"
    },
    {
      "name": "gretacb",
      "email": "carol@mapbox.com"
    },
    {
      "name": "ian29",
      "email": "ian.villeda@gmail.com"
    },
    {
      "name": "ianshward",
      "email": "ian@mapbox.com"
    },
    {
      "name": "ingalls",
      "email": "nicholas.ingalls@gmail.com"
    },
    {
      "name": "jfirebaugh",
      "email": "john.firebaugh@gmail.com"
    },
    {
      "name": "jrpruit1",
      "email": "jake@jakepruitt.com"
    },
    {
      "name": "karenzshea",
      "email": "karen@mapbox.com"
    },
    {
      "name": "kkaefer",
      "email": "kkaefer@gmail.com"
    },
    {
      "name": "lbud",
      "email": "lauren@mapbox.com"
    },
    {
      "name": "lucaswoj",
      "email": "lucas@lucaswoj.com"
    },
    {
      "name": "lxbarth",
      "email": "alex@mapbox.com"
    },
    {
      "name": "lyzidiamond",
      "email": "lyzi@mapbox.com"
    },
    {
      "name": "mapbox-admin",
      "email": "accounts@mapbox.com"
    },
    {
      "name": "mateov",
      "email": "matt@mapbox.com"
    },
    {
      "name": "mcwhittemore",
      "email": "mcwhittemore@gmail.com"
    },
    {
      "name": "miccolis",
      "email": "jeff@miccolis.net"
    },
    {
      "name": "mikemorris",
      "email": "michael.patrick.morris@gmail.com"
    },
    {
      "name": "morganherlocker",
      "email": "morgan.herlocker@gmail.com"
    },
    {
      "name": "mourner",
      "email": "agafonkin@gmail.com"
    },
    {
      "name": "nickidlugash",
      "email": "nicki@mapbox.com"
    },
    {
      "name": "rclark",
      "email": "ryan.clark.j@gmail.com"
    },
    {
      "name": "samanbb",
      "email": "saman@mapbox.com"
    },
    {
      "name": "sbma44",
      "email": "tlee@mapbox.com"
    },
    {
      "name": "scothis",
      "email": "scothis@gmail.com"
    },
    {
      "name": "sgillies",
      "email": "sean@mapbox.com"
    },
    {
      "name": "springmeyer",
      "email": "dane@mapbox.com"
    },
    {
      "name": "themarex",
      "email": "patrick@mapbox.com"
    },
    {
      "name": "tmcw",
      "email": "tom@macwright.org"
    },
    {
      "name": "tristen",
      "email": "tristen.brown@gmail.com"
    },
    {
      "name": "willwhite",
      "email": "will@mapbox.com"
    },
    {
      "name": "yhahn",
      "email": "young@mapbox.com"
    }
  ],
  "name": "mapbox-gl",
  "optionalDependencies": {},
  "readme": "ERROR: No README data found!",
  "repository": {
    "type": "git",
    "url": "git://github.com/mapbox/mapbox-gl-js.git"
  },
  "scripts": {
    "build": "npm run build-docs # invoked by publisher when publishing docs on the mb-pages branch",
    "build-dev": "browserify js/mapbox-gl.js --debug --standalone mapboxgl > dist/mapbox-gl-dev.js && tap --no-coverage test/build/dev.test.js",
    "build-docs": "documentation build --github --format html -c documentation.yml --theme ./docs/_theme --output docs/api/",
    "build-min": "browserify js/mapbox-gl.js --debug -t unassertify --plugin [minifyify --map mapbox-gl.js.map --output dist/mapbox-gl.js.map] --standalone mapboxgl > dist/mapbox-gl.js && tap --no-coverage test/build/min.test.js",
    "build-token": "browserify debug/access-token-src.js --debug -t envify > debug/access-token.js",
    "lint": "eslint  --ignore-path .gitignore js test bench docs/_posts/examples/*.html",
    "open-changed-examples": "git diff --name-only mb-pages HEAD -- docs/_posts/examples/*.html | awk '{print \"http://127.0.0.1:4000/mapbox-gl-js/example/\" substr($0,33,length($0)-37)}' | xargs open",
    "start": "run-p build-token watch-dev watch-bench start-server",
    "start-bench": "run-p build-token watch-bench start-server",
    "start-debug": "run-p build-token watch-dev start-server",
    "start-docs": "npm run build-min && npm run build-docs && jekyll serve -w",
    "start-server": "st --no-cache --localhost --port 9966 --index index.html .",
    "test": "npm run lint && tap --reporter dot test/js/*/*.js test/build/webpack.test.js",
    "test-suite": "node test/render.test.js && node test/query.test.js",
    "watch-bench": "node bench/download-data.js && watchify bench/index.js --plugin [minifyify --no-map] -t [babelify --presets react] -t unassertify -t envify -o bench/bench.js -v",
    "watch-dev": "watchify js/mapbox-gl.js --debug --standalone mapboxgl -o dist/mapbox-gl-dev.js -v"
  },
  "version": "0.22.1"
}

},{}],421:[function(require,module,exports){
'use strict'

module.exports = createTable

var chull = require('convex-hull')

function constructVertex(d, a, b) {
  var x = new Array(d)
  for(var i=0; i<d; ++i) {
    x[i] = 0.0
    if(i === a) {
      x[i] += 0.5
    }
    if(i === b) {
      x[i] += 0.5
    }
  }
  return x
}

function constructCell(dimension, mask) {
  if(mask === 0 || mask === (1<<(dimension+1))-1) {
    return []
  }
  var points = []
  var index  = []
  for(var i=0; i<=dimension; ++i) {
    if(mask & (1<<i)) {
      points.push(constructVertex(dimension, i-1, i-1))
      index.push(null)
      for(var j=0; j<=dimension; ++j) {
        if(~mask & (1<<j)) {
          points.push(constructVertex(dimension, i-1, j-1))
          index.push([i,j])
        }
      }
    }
  }
  
  //Preprocess points so first d+1 points are linearly independent
  var hull = chull(points)
  var faces = []
i_loop:
  for(var i=0; i<hull.length; ++i) {
    var face = hull[i]
    var nface = []
    for(var j=0; j<face.length; ++j) {
      if(!index[face[j]]) {
        continue i_loop
      }
      nface.push(index[face[j]].slice())
    }
    faces.push(nface)
  }
  return faces
}

function createTable(dimension) {
  var numCells = 1<<(dimension+1)
  var result = new Array(numCells)
  for(var i=0; i<numCells; ++i) {
    result[i] = constructCell(dimension, i)
  }
  return result
}
},{"convex-hull":74}],422:[function(require,module,exports){
/*jshint unused:true*/
/*
Input:  matrix      ; a 4x4 matrix
Output: translation ; a 3 component vector
        scale       ; a 3 component vector
        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
        perspective ; a 4 component vector
        quaternion  ; a 4 component vector
Returns false if the matrix cannot be decomposed, true if it can


References:
https://github.com/kamicane/matrix3d/blob/master/lib/Matrix3d.js
https://github.com/ChromiumWebApps/chromium/blob/master/ui/gfx/transform_util.cc
http://www.w3.org/TR/css3-transforms/#decomposing-a-3d-matrix
*/

var normalize = require('./normalize')

var create = require('gl-mat4/create')
var clone = require('gl-mat4/clone')
var determinant = require('gl-mat4/determinant')
var invert = require('gl-mat4/invert')
var transpose = require('gl-mat4/transpose')
var vec3 = {
    length: require('gl-vec3/length'),
    normalize: require('gl-vec3/normalize'),
    dot: require('gl-vec3/dot'),
    cross: require('gl-vec3/cross')
}

var tmp = create()
var perspectiveMatrix = create()
var tmpVec4 = [0, 0, 0, 0]
var row = [ [0,0,0], [0,0,0], [0,0,0] ]
var pdum3 = [0,0,0]

module.exports = function decomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
    if (!translation) translation = [0,0,0]
    if (!scale) scale = [0,0,0]
    if (!skew) skew = [0,0,0]
    if (!perspective) perspective = [0,0,0,1]
    if (!quaternion) quaternion = [0,0,0,1]

    //normalize, if not possible then bail out early
    if (!normalize(tmp, matrix))
        return false

    // perspectiveMatrix is used to solve for perspective, but it also provides
    // an easy way to test for singularity of the upper 3x3 component.
    clone(perspectiveMatrix, tmp)

    perspectiveMatrix[3] = 0
    perspectiveMatrix[7] = 0
    perspectiveMatrix[11] = 0
    perspectiveMatrix[15] = 1

    // If the perspectiveMatrix is not invertible, we are also unable to
    // decompose, so we'll bail early. Constant taken from SkMatrix44::invert.
    if (Math.abs(determinant(perspectiveMatrix) < 1e-8))
        return false

    var a03 = tmp[3], a13 = tmp[7], a23 = tmp[11],
            a30 = tmp[12], a31 = tmp[13], a32 = tmp[14], a33 = tmp[15]

    // First, isolate perspective.
    if (a03 !== 0 || a13 !== 0 || a23 !== 0) {
        tmpVec4[0] = a03
        tmpVec4[1] = a13
        tmpVec4[2] = a23
        tmpVec4[3] = a33

        // Solve the equation by inverting perspectiveMatrix and multiplying
        // rightHandSide by the inverse.
        // resuing the perspectiveMatrix here since it's no longer needed
        var ret = invert(perspectiveMatrix, perspectiveMatrix)
        if (!ret) return false
        transpose(perspectiveMatrix, perspectiveMatrix)

        //multiply by transposed inverse perspective matrix, into perspective vec4
        vec4multMat4(perspective, tmpVec4, perspectiveMatrix)
    } else { 
        //no perspective
        perspective[0] = perspective[1] = perspective[2] = 0
        perspective[3] = 1
    }

    // Next take care of translation
    translation[0] = a30
    translation[1] = a31
    translation[2] = a32

    // Now get scale and shear. 'row' is a 3 element array of 3 component vectors
    mat3from4(row, tmp)

    // Compute X scale factor and normalize first row.
    scale[0] = vec3.length(row[0])
    vec3.normalize(row[0], row[0])

    // Compute XY shear factor and make 2nd row orthogonal to 1st.
    skew[0] = vec3.dot(row[0], row[1])
    combine(row[1], row[1], row[0], 1.0, -skew[0])

    // Now, compute Y scale and normalize 2nd row.
    scale[1] = vec3.length(row[1])
    vec3.normalize(row[1], row[1])
    skew[0] /= scale[1]

    // Compute XZ and YZ shears, orthogonalize 3rd row
    skew[1] = vec3.dot(row[0], row[2])
    combine(row[2], row[2], row[0], 1.0, -skew[1])
    skew[2] = vec3.dot(row[1], row[2])
    combine(row[2], row[2], row[1], 1.0, -skew[2])

    // Next, get Z scale and normalize 3rd row.
    scale[2] = vec3.length(row[2])
    vec3.normalize(row[2], row[2])
    skew[1] /= scale[2]
    skew[2] /= scale[2]


    // At this point, the matrix (in rows) is orthonormal.
    // Check for a coordinate system flip.  If the determinant
    // is -1, then negate the matrix and the scaling factors.
    vec3.cross(pdum3, row[1], row[2])
    if (vec3.dot(row[0], pdum3) < 0) {
        for (var i = 0; i < 3; i++) {
            scale[i] *= -1;
            row[i][0] *= -1
            row[i][1] *= -1
            row[i][2] *= -1
        }
    }

    // Now, get the rotations out
    quaternion[0] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] - row[1][1] - row[2][2], 0))
    quaternion[1] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] + row[1][1] - row[2][2], 0))
    quaternion[2] = 0.5 * Math.sqrt(Math.max(1 - row[0][0] - row[1][1] + row[2][2], 0))
    quaternion[3] = 0.5 * Math.sqrt(Math.max(1 + row[0][0] + row[1][1] + row[2][2], 0))

    if (row[2][1] > row[1][2])
        quaternion[0] = -quaternion[0]
    if (row[0][2] > row[2][0])
        quaternion[1] = -quaternion[1]
    if (row[1][0] > row[0][1])
        quaternion[2] = -quaternion[2]
    return true
}

//will be replaced by gl-vec4 eventually
function vec4multMat4(out, a, m) {
    var x = a[0], y = a[1], z = a[2], w = a[3];
    out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;
    out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;
    out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;
    out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;
    return out;
}

//gets upper-left of a 4x4 matrix into a 3x3 of vectors
function mat3from4(out, mat4x4) {
    out[0][0] = mat4x4[0]
    out[0][1] = mat4x4[1]
    out[0][2] = mat4x4[2]
    
    out[1][0] = mat4x4[4]
    out[1][1] = mat4x4[5]
    out[1][2] = mat4x4[6]

    out[2][0] = mat4x4[8]
    out[2][1] = mat4x4[9]
    out[2][2] = mat4x4[10]
}

function combine(out, a, b, scale1, scale2) {
    out[0] = a[0] * scale1 + b[0] * scale2
    out[1] = a[1] * scale1 + b[1] * scale2
    out[2] = a[2] * scale1 + b[2] * scale2
}
},{"./normalize":423,"gl-mat4/clone":150,"gl-mat4/create":151,"gl-mat4/determinant":152,"gl-mat4/invert":156,"gl-mat4/transpose":166,"gl-vec3/cross":244,"gl-vec3/dot":245,"gl-vec3/length":246,"gl-vec3/normalize":248}],423:[function(require,module,exports){
module.exports = function normalize(out, mat) {
    var m44 = mat[15]
    // Cannot normalize.
    if (m44 === 0) 
        return false
    var scale = 1 / m44
    for (var i=0; i<16; i++)
        out[i] = mat[i] * scale
    return true
}
},{}],424:[function(require,module,exports){
var lerp = require('gl-vec3/lerp')

var recompose = require('mat4-recompose')
var decompose = require('mat4-decompose')
var determinant = require('gl-mat4/determinant')
var slerp = require('quat-slerp')

var state0 = state()
var state1 = state()
var tmp = state()

module.exports = interpolate
function interpolate(out, start, end, alpha) {
    if (determinant(start) === 0 || determinant(end) === 0)
        return false

    //decompose the start and end matrices into individual components
    var r0 = decompose(start, state0.translate, state0.scale, state0.skew, state0.perspective, state0.quaternion)
    var r1 = decompose(end, state1.translate, state1.scale, state1.skew, state1.perspective, state1.quaternion)
    if (!r0 || !r1)
        return false    


    //now lerp/slerp the start and end components into a temporary     lerp(tmptranslate, state0.translate, state1.translate, alpha)
    lerp(tmp.translate, state0.translate, state1.translate, alpha)
    lerp(tmp.skew, state0.skew, state1.skew, alpha)
    lerp(tmp.scale, state0.scale, state1.scale, alpha)
    lerp(tmp.perspective, state0.perspective, state1.perspective, alpha)
    slerp(tmp.quaternion, state0.quaternion, state1.quaternion, alpha)

    //and recompose into our 'out' matrix
    recompose(out, tmp.translate, tmp.scale, tmp.skew, tmp.perspective, tmp.quaternion)
    return true
}

function state() {
    return {
        translate: vec3(),
        scale: vec3(1),
        skew: vec3(),
        perspective: vec4(),
        quaternion: vec4()
    }
}

function vec3(n) {
    return [n||0,n||0,n||0]
}

function vec4() {
    return [0,0,0,1]
}
},{"gl-mat4/determinant":152,"gl-vec3/lerp":247,"mat4-decompose":422,"mat4-recompose":425,"quat-slerp":925}],425:[function(require,module,exports){
/*
Input:  translation ; a 3 component vector
        scale       ; a 3 component vector
        skew        ; skew factors XY,XZ,YZ represented as a 3 component vector
        perspective ; a 4 component vector
        quaternion  ; a 4 component vector
Output: matrix      ; a 4x4 matrix

From: http://www.w3.org/TR/css3-transforms/#recomposing-to-a-3d-matrix
*/

var mat4 = {
    identity: require('gl-mat4/identity'),
    translate: require('gl-mat4/translate'),
    multiply: require('gl-mat4/multiply'),
    create: require('gl-mat4/create'),
    scale: require('gl-mat4/scale'),
    fromRotationTranslation: require('gl-mat4/fromRotationTranslation')
}

var rotationMatrix = mat4.create()
var temp = mat4.create()

module.exports = function recomposeMat4(matrix, translation, scale, skew, perspective, quaternion) {
    mat4.identity(matrix)

    //apply translation & rotation
    mat4.fromRotationTranslation(matrix, quaternion, translation)

    //apply perspective
    matrix[3] = perspective[0]
    matrix[7] = perspective[1]
    matrix[11] = perspective[2]
    matrix[15] = perspective[3]
        
    // apply skew
    // temp is a identity 4x4 matrix initially
    mat4.identity(temp)

    if (skew[2] !== 0) {
        temp[9] = skew[2]
        mat4.multiply(matrix, matrix, temp)
    }

    if (skew[1] !== 0) {
        temp[9] = 0
        temp[8] = skew[1]
        mat4.multiply(matrix, matrix, temp)
    }

    if (skew[0] !== 0) {
        temp[8] = 0
        temp[4] = skew[0]
        mat4.multiply(matrix, matrix, temp)
    }

    //apply scale
    mat4.scale(matrix, matrix, scale)
    return matrix
}
},{"gl-mat4/create":151,"gl-mat4/fromRotationTranslation":154,"gl-mat4/identity":155,"gl-mat4/multiply":158,"gl-mat4/scale":164,"gl-mat4/translate":165}],426:[function(require,module,exports){
'use strict'

var bsearch   = require('binary-search-bounds')
var m4interp  = require('mat4-interpolate')
var invert44  = require('gl-mat4/invert')
var rotateX   = require('gl-mat4/rotateX')
var rotateY   = require('gl-mat4/rotateY')
var rotateZ   = require('gl-mat4/rotateZ')
var lookAt    = require('gl-mat4/lookAt')
var translate = require('gl-mat4/translate')
var scale     = require('gl-mat4/scale')
var normalize = require('gl-vec3/normalize')

var DEFAULT_CENTER = [0,0,0]

module.exports = createMatrixCameraController

function MatrixCameraController(initialMatrix) {
  this._components    = initialMatrix.slice()
  this._time          = [0]
  this.prevMatrix     = initialMatrix.slice()
  this.nextMatrix     = initialMatrix.slice()
  this.computedMatrix = initialMatrix.slice()
  this.computedInverse = initialMatrix.slice()
  this.computedEye    = [0,0,0]
  this.computedUp     = [0,0,0]
  this.computedCenter = [0,0,0]
  this.computedRadius = [0]
  this._limits        = [-Infinity, Infinity]
}

var proto = MatrixCameraController.prototype

proto.recalcMatrix = function(t) {
  var time = this._time
  var tidx = bsearch.le(time, t)
  var mat = this.computedMatrix
  if(tidx < 0) {
    return
  }
  var comps = this._components
  if(tidx === time.length-1) {
    var ptr = 16*tidx
    for(var i=0; i<16; ++i) {
      mat[i] = comps[ptr++]
    }
  } else {
    var dt = (time[tidx+1] - time[tidx])
    var ptr = 16*tidx
    var prev = this.prevMatrix
    var allEqual = true
    for(var i=0; i<16; ++i) {
      prev[i] = comps[ptr++]
    }
    var next = this.nextMatrix
    for(var i=0; i<16; ++i) {
      next[i] = comps[ptr++]
      allEqual = allEqual && (prev[i] === next[i])
    }
    if(dt < 1e-6 || allEqual) {
      for(var i=0; i<16; ++i) {
        mat[i] = prev[i]
      }
    } else {
      m4interp(mat, prev, next, (t - time[tidx])/dt)
    }
  }

  var up = this.computedUp
  up[0] = mat[1]
  up[1] = mat[5]
  up[2] = mat[6]
  normalize(up, up)

  var imat = this.computedInverse
  invert44(imat, mat)
  var eye = this.computedEye
  var w = imat[15]
  eye[0] = imat[12]/w
  eye[1] = imat[13]/w
  eye[2] = imat[14]/w

  var center = this.computedCenter
  var radius = Math.exp(this.computedRadius[0])
  for(var i=0; i<3; ++i) {
    center[i] = eye[i] - mat[2+4*i] * radius
  }
}

proto.idle = function(t) {
  if(t < this.lastT()) {
    return
  }
  var mc = this._components
  var ptr = mc.length-16
  for(var i=0; i<16; ++i) {
    mc.push(mc[ptr++])
  }
  this._time.push(t)
}

proto.flush = function(t) {
  var idx = bsearch.gt(this._time, t) - 2
  if(idx < 0) {
    return
  }
  this._time.slice(0, idx)
  this._components.slice(0, 16*idx)
}

proto.lastT = function() {
  return this._time[this._time.length-1]
}

proto.lookAt = function(t, eye, center, up) {
  this.recalcMatrix(t)
  eye    = eye || this.computedEye
  center = center || DEFAULT_CENTER
  up     = up || this.computedUp
  this.setMatrix(t, lookAt(this.computedMatrix, eye, center, up))
  var d2 = 0.0
  for(var i=0; i<3; ++i) {
    d2 += Math.pow(center[i] - eye[i], 2)
  }
  d2 = Math.log(Math.sqrt(d2))
  this.computedRadius[0] = d2
}

proto.rotate = function(t, yaw, pitch, roll) {
  this.recalcMatrix(t)
  var mat = this.computedInverse
  if(yaw)   rotateY(mat, mat, yaw)
  if(pitch) rotateX(mat, mat, pitch)
  if(roll)  rotateZ(mat, mat, roll)
  this.setMatrix(t, invert44(this.computedMatrix, mat))
}

var tvec = [0,0,0]

proto.pan = function(t, dx, dy, dz) {
  tvec[0] = -(dx || 0.0)
  tvec[1] = -(dy || 0.0)
  tvec[2] = -(dz || 0.0)
  this.recalcMatrix(t)
  var mat = this.computedInverse
  translate(mat, mat, tvec)
  this.setMatrix(t, invert44(mat, mat))
}

proto.translate = function(t, dx, dy, dz) {
  tvec[0] = dx || 0.0
  tvec[1] = dy || 0.0
  tvec[2] = dz || 0.0
  this.recalcMatrix(t)
  var mat = this.computedMatrix
  translate(mat, mat, tvec)
  this.setMatrix(t, mat)
}

proto.setMatrix = function(t, mat) {
  if(t < this.lastT()) {
    return
  }
  this._time.push(t)
  for(var i=0; i<16; ++i) {
    this._components.push(mat[i])
  }
}

proto.setDistance = function(t, d) {
  this.computedRadius[0] = d
}

proto.setDistanceLimits = function(a,b) {
  var lim = this._limits
  lim[0] = a
  lim[1] = b
}

proto.getDistanceLimits = function(out) {
  var lim = this._limits
  if(out) {
    out[0] = lim[0]
    out[1] = lim[1]
    return out
  }
  return lim
}

function createMatrixCameraController(options) {
  options = options || {}
  var matrix = options.matrix || 
              [1,0,0,0,
               0,1,0,0,
               0,0,1,0,
               0,0,0,1]
  return new MatrixCameraController(matrix)
}
},{"binary-search-bounds":32,"gl-mat4/invert":156,"gl-mat4/lookAt":157,"gl-mat4/rotateX":161,"gl-mat4/rotateY":162,"gl-mat4/rotateZ":163,"gl-mat4/scale":164,"gl-mat4/translate":165,"gl-vec3/normalize":248,"mat4-interpolate":424}],427:[function(require,module,exports){
'use strict'

module.exports = monotoneConvexHull2D

var orient = require('robust-orientation')[3]

function monotoneConvexHull2D(points) {
  var n = points.length

  if(n < 3) {
    var result = new Array(n)
    for(var i=0; i<n; ++i) {
      result[i] = i
    }

    if(n === 2 &&
       points[0][0] === points[1][0] &&
       points[0][1] === points[1][1]) {
      return [0]
    }

    return result
  }

  //Sort point indices along x-axis
  var sorted = new Array(n)
  for(var i=0; i<n; ++i) {
    sorted[i] = i
  }
  sorted.sort(function(a,b) {
    var d = points[a][0]-points[b][0]
    if(d) {
      return d
    }
    return points[a][1] - points[b][1]
  })

  //Construct upper and lower hulls
  var lower = [sorted[0], sorted[1]]
  var upper = [sorted[0], sorted[1]]

  for(var i=2; i<n; ++i) {
    var idx = sorted[i]
    var p   = points[idx]

    //Insert into lower list
    var m = lower.length
    while(m > 1 && orient(
        points[lower[m-2]], 
        points[lower[m-1]], 
        p) <= 0) {
      m -= 1
      lower.pop()
    }
    lower.push(idx)

    //Insert into upper list
    m = upper.length
    while(m > 1 && orient(
        points[upper[m-2]], 
        points[upper[m-1]], 
        p) >= 0) {
      m -= 1
      upper.pop()
    }
    upper.push(idx)
  }

  //Merge lists together
  var result = new Array(upper.length + lower.length - 2)
  var ptr    = 0
  for(var i=0, nl=lower.length; i<nl; ++i) {
    result[ptr++] = lower[i]
  }
  for(var j=upper.length-2; j>0; --j) {
    result[ptr++] = upper[j]
  }

  //Return result
  return result
}
},{"robust-orientation":954}],428:[function(require,module,exports){
'use strict'

module.exports = mouseListen

var mouse = require('mouse-event')

function mouseListen(element, callback) {
  if(!callback) {
    callback = element
    element = window
  }

  var buttonState = 0
  var x = 0
  var y = 0
  var mods = {
    shift:   false,
    alt:     false,
    control: false,
    meta:    false
  }
  var attached = false

  function updateMods(ev) {
    var changed = false
    if('altKey' in ev) {
      changed = changed || ev.altKey !== mods.alt
      mods.alt = !!ev.altKey
    }
    if('shiftKey' in ev) {
      changed = changed || ev.shiftKey !== mods.shift
      mods.shift = !!ev.shiftKey
    }
    if('ctrlKey' in ev) {
      changed = changed || ev.ctrlKey !== mods.control
      mods.control = !!ev.ctrlKey
    }
    if('metaKey' in ev) {
      changed = changed || ev.metaKey !== mods.meta
      mods.meta = !!ev.metaKey
    }
    return changed
  }

  function handleEvent(nextButtons, ev) {
    var nextX = mouse.x(ev)
    var nextY = mouse.y(ev)
    if('buttons' in ev) {
      nextButtons = ev.buttons|0
    }
    if(nextButtons !== buttonState ||
       nextX !== x ||
       nextY !== y ||
       updateMods(ev)) {
      buttonState = nextButtons|0
      x = nextX||0
      y = nextY||0
      callback && callback(buttonState, x, y, mods)
    }
  }

  function clearState(ev) {
    handleEvent(0, ev)
  }

  function handleBlur() {
    if(buttonState ||
      x ||
      y ||
      mods.shift ||
      mods.alt ||
      mods.meta ||
      mods.control) {

      x = y = 0
      buttonState = 0
      mods.shift = mods.alt = mods.control = mods.meta = false
      callback && callback(0, 0, 0, mods)
    }
  }

  function handleMods(ev) {
    if(updateMods(ev)) {
      callback && callback(buttonState, x, y, mods)
    }
  }

  function handleMouseMove(ev) {
    if(mouse.buttons(ev) === 0) {
      handleEvent(0, ev)
    } else {
      handleEvent(buttonState, ev)
    }
  }

  function handleMouseDown(ev) {
    handleEvent(buttonState | mouse.buttons(ev), ev)
  }

  function handleMouseUp(ev) {
    handleEvent(buttonState & ~mouse.buttons(ev), ev)
  }

  function attachListeners() {
    if(attached) {
      return
    }
    attached = true

    element.addEventListener('mousemove', handleMouseMove)

    element.addEventListener('mousedown', handleMouseDown)

    element.addEventListener('mouseup', handleMouseUp)

    element.addEventListener('mouseleave', clearState)
    element.addEventListener('mouseenter', clearState)
    element.addEventListener('mouseout', clearState)
    element.addEventListener('mouseover', clearState)

    element.addEventListener('blur', handleBlur)

    element.addEventListener('keyup', handleMods)
    element.addEventListener('keydown', handleMods)
    element.addEventListener('keypress', handleMods)

    if(element !== window) {
      window.addEventListener('blur', handleBlur)

      window.addEventListener('keyup', handleMods)
      window.addEventListener('keydown', handleMods)
      window.addEventListener('keypress', handleMods)
    }
  }

  function detachListeners() {
    if(!attached) {
      return
    }
    attached = false

    element.removeEventListener('mousemove', handleMouseMove)

    element.removeEventListener('mousedown', handleMouseDown)

    element.removeEventListener('mouseup', handleMouseUp)

    element.removeEventListener('mouseleave', clearState)
    element.removeEventListener('mouseenter', clearState)
    element.removeEventListener('mouseout', clearState)
    element.removeEventListener('mouseover', clearState)

    element.removeEventListener('blur', handleBlur)

    element.removeEventListener('keyup', handleMods)
    element.removeEventListener('keydown', handleMods)
    element.removeEventListener('keypress', handleMods)

    if(element !== window) {
      window.removeEventListener('blur', handleBlur)

      window.removeEventListener('keyup', handleMods)
      window.removeEventListener('keydown', handleMods)
      window.removeEventListener('keypress', handleMods)
    }
  }

  //Attach listeners
  attachListeners()

  var result = {
    element: element
  }

  Object.defineProperties(result, {
    enabled: {
      get: function() { return attached },
      set: function(f) {
        if(f) {
          attachListeners()
        } else {
          detachListeners
        }
      },
      enumerable: true
    },
    buttons: {
      get: function() { return buttonState },
      enumerable: true
    },
    x: {
      get: function() { return x },
      enumerable: true
    },
    y: {
      get: function() { return y },
      enumerable: true
    },
    mods: {
      get: function() { return mods },
      enumerable: true
    }
  })

  return result
}

},{"mouse-event":430}],429:[function(require,module,exports){
var rootPosition = { left: 0, top: 0 }

module.exports = mouseEventOffset
function mouseEventOffset (ev, target, out) {
  target = target || ev.currentTarget || ev.srcElement
  if (!Array.isArray(out)) {
    out = [ 0, 0 ]
  }
  var cx = ev.clientX || 0
  var cy = ev.clientY || 0
  var rect = getBoundingClientOffset(target)
  out[0] = cx - rect.left
  out[1] = cy - rect.top
  return out
}

function getBoundingClientOffset (element) {
  if (element === window ||
      element === document ||
      element === document.body) {
    return rootPosition
  } else {
    return element.getBoundingClientRect()
  }
}

},{}],430:[function(require,module,exports){
'use strict'

function mouseButtons(ev) {
  if(typeof ev === 'object') {
    if('buttons' in ev) {
      return ev.buttons
    } else if('which' in ev) {
      var b = ev.which
      if(b === 2) {
        return 4
      } else if(b === 3) {
        return 2
      } else if(b > 0) {
        return 1<<(b-1)
      }
    } else if('button' in ev) {
      var b = ev.button
      if(b === 1) {
        return 4
      } else if(b === 2) {
        return 2
      } else if(b >= 0) {
        return 1<<b
      }
    }
  }
  return 0
}
exports.buttons = mouseButtons

function mouseElement(ev) {
  return ev.target || ev.srcElement || window
}
exports.element = mouseElement

function mouseRelativeX(ev) {
  if(typeof ev === 'object') {
    if('offsetX' in ev) {
      return ev.offsetX
    }
    var target = mouseElement(ev)
    var bounds = target.getBoundingClientRect()
    return ev.clientX - bounds.left
  }
  return 0
}
exports.x = mouseRelativeX

function mouseRelativeY(ev) {
  if(typeof ev === 'object') {
    if('offsetY' in ev) {
      return ev.offsetY
    }
    var target = mouseElement(ev)
    var bounds = target.getBoundingClientRect()
    return ev.clientY - bounds.top
  }
  return 0
}
exports.y = mouseRelativeY

},{}],431:[function(require,module,exports){
'use strict'

var toPX = require('to-px')

module.exports = mouseWheelListen

function mouseWheelListen(element, callback, noScroll) {
  if(typeof element === 'function') {
    noScroll = !!callback
    callback = element
    element = window
  }
  var lineHeight = toPX('ex', element)
  var listener = function(ev) {
    if(noScroll) {
      ev.preventDefault()
    }
    var dx = ev.deltaX || 0
    var dy = ev.deltaY || 0
    var dz = ev.deltaZ || 0
    var mode = ev.deltaMode
    var scale = 1
    switch(mode) {
      case 1:
        scale = lineHeight
      break
      case 2:
        scale = window.innerHeight
      break
    }
    dx *= scale
    dy *= scale
    dz *= scale
    if(dx || dy || dz) {
      return callback(dx, dy, dz, ev)
    }
  }
  element.addEventListener('wheel', listener)
  return listener
}

},{"to-px":986}],432:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")

module.exports = createSurfaceExtractor

//Helper macros
function array(i) {
  return "a" + i
}
function data(i) {
  return "d" + i
}
function cube(i,bitmask) {
  return "c" + i + "_" + bitmask
}
function shape(i) {
  return "s" + i
}
function stride(i,j) {
  return "t" + i + "_" + j
}
function offset(i) {
  return "o" + i
}
function scalar(i) {
  return "x" + i
}
function pointer(i) {
  return "p" + i
}
function delta(i,bitmask) {
  return "d" + i + "_" + bitmask
}
function index(i) {
  return "i" + i
}
function step(i,j) {
  return "u" + i + "_" + j
}
function pcube(bitmask) {
  return "b" + bitmask
}
function qcube(bitmask) {
  return "y" + bitmask
}
function pdelta(bitmask) {
  return "e" + bitmask
}
function vert(i) {
  return "v" + i
}
var VERTEX_IDS = "V"
var PHASES = "P"
var VERTEX_COUNT = "N"
var POOL_SIZE = "Q"
var POINTER = "X"
var TEMPORARY = "T"

function permBitmask(dimension, mask, order) {
  var r = 0
  for(var i=0; i<dimension; ++i) {
    if(mask & (1<<i)) {
      r |= (1<<order[i])
    }
  }
  return r
}

//Generates the surface procedure
function compileSurfaceProcedure(vertexFunc, faceFunc, phaseFunc, scalarArgs, order, typesig) {
  var arrayArgs = typesig.length
  var dimension = order.length

  if(dimension < 2) {
    throw new Error("ndarray-extract-contour: Dimension must be at least 2")
  }

  var funcName = "extractContour" + order.join("_")
  var code = []
  var vars = []
  var args = []

  //Assemble arguments
  for(var i=0; i<arrayArgs; ++i) {
    args.push(array(i))  
  }
  for(var i=0; i<scalarArgs; ++i) {
    args.push(scalar(i))
  }

  //Shape
  for(var i=0; i<dimension; ++i) {
    vars.push(shape(i) + "=" + array(0) + ".shape[" + i + "]|0")
  }
  //Data, stride, offset pointers
  for(var i=0; i<arrayArgs; ++i) {
    vars.push(data(i) + "=" + array(i) + ".data",
              offset(i) + "=" + array(i) + ".offset|0")
    for(var j=0; j<dimension; ++j) {
      vars.push(stride(i,j) + "=" + array(i) + ".stride[" + j + "]|0")
    }
  }
  //Pointer, delta and cube variables
  for(var i=0; i<arrayArgs; ++i) {
    vars.push(pointer(i) + "=" + offset(i))
    vars.push(cube(i,0))
    for(var j=1; j<(1<<dimension); ++j) {
      var ptrStr = []
      for(var k=0; k<dimension; ++k) {
        if(j & (1<<k)) {
          ptrStr.push("-" + stride(i,k))
        }
      }
      vars.push(delta(i,j) + "=(" + ptrStr.join("") + ")|0")
      vars.push(cube(i,j) + "=0")
    }
  }
  //Create step variables
  for(var i=0; i<arrayArgs; ++i) {
    for(var j=0; j<dimension; ++j) {
      var stepVal = [ stride(i,order[j]) ]
      if(j > 0) {
        stepVal.push(stride(i, order[j-1]) + "*" + shape(order[j-1]) )
      }
      vars.push(step(i,order[j]) + "=(" + stepVal.join("-") + ")|0")
    }
  }
  //Create index variables
  for(var i=0; i<dimension; ++i) {
    vars.push(index(i) + "=0")
  }
  //Vertex count
  vars.push(VERTEX_COUNT + "=0")
  //Compute pool size, initialize pool step
  var sizeVariable = ["2"]
  for(var i=dimension-2; i>=0; --i) {
    sizeVariable.push(shape(order[i]))
  }
  //Previous phases and vertex_ids
  vars.push(POOL_SIZE + "=(" + sizeVariable.join("*") + ")|0",
            PHASES + "=mallocUint32(" + POOL_SIZE + ")",
            VERTEX_IDS + "=mallocUint32(" + POOL_SIZE + ")",
            POINTER + "=0")
  //Create cube variables for phases
  vars.push(pcube(0) + "=0")
  for(var j=1; j<(1<<dimension); ++j) {
    var cubeDelta = []
    var cubeStep = [ ]
    for(var k=0; k<dimension; ++k) {
      if(j & (1<<k)) {
        if(cubeStep.length === 0) {
          cubeDelta.push("1")
        } else {
          cubeDelta.unshift(cubeStep.join("*"))
        }
      }
      cubeStep.push(shape(order[k]))
    }
    var signFlag = ""
    if(cubeDelta[0].indexOf(shape(order[dimension-2])) < 0) {
      signFlag = "-"
    }
    var jperm = permBitmask(dimension, j, order)
    vars.push(pdelta(jperm) + "=(-" + cubeDelta.join("-") + ")|0",
              qcube(jperm) + "=(" + signFlag + cubeDelta.join("-") + ")|0",
              pcube(jperm) + "=0")
  }
  vars.push(vert(0) + "=0", TEMPORARY + "=0")

  function forLoopBegin(i, start) {
    code.push("for(", index(order[i]), "=", start, ";",
      index(order[i]), "<", shape(order[i]), ";",
      "++", index(order[i]), "){")
  }

  function forLoopEnd(i) {
    for(var j=0; j<arrayArgs; ++j) {
      code.push(pointer(j), "+=", step(j,order[i]), ";")
    }
    code.push("}")
  }

  function fillEmptySlice(k) {
    for(var i=k-1; i>=0; --i) {
      forLoopBegin(i, 0) 
    }
    var phaseFuncArgs = []
    for(var i=0; i<arrayArgs; ++i) {
      if(typesig[i]) {
        phaseFuncArgs.push(data(i) + ".get(" + pointer(i) + ")")
      } else {
        phaseFuncArgs.push(data(i) + "[" + pointer(i) + "]")
      }
    }
    for(var i=0; i<scalarArgs; ++i) {
      phaseFuncArgs.push(scalar(i))
    }
    code.push(PHASES, "[", POINTER, "++]=phase(", phaseFuncArgs.join(), ");")
    for(var i=0; i<k; ++i) {
      forLoopEnd(i)
    }
    for(var j=0; j<arrayArgs; ++j) {
      code.push(pointer(j), "+=", step(j,order[k]), ";")
    }
  }

  function processGridCell(mask) {
    //Read in local data
    for(var i=0; i<arrayArgs; ++i) {
      if(typesig[i]) {
        code.push(cube(i,0), "=", data(i), ".get(", pointer(i), ");")
      } else {
        code.push(cube(i,0), "=", data(i), "[", pointer(i), "];")
      }
    }

    //Read in phase
    var phaseFuncArgs = []
    for(var i=0; i<arrayArgs; ++i) {
      phaseFuncArgs.push(cube(i,0))
    }
    for(var i=0; i<scalarArgs; ++i) {
      phaseFuncArgs.push(scalar(i))
    }
    
    code.push(pcube(0), "=", PHASES, "[", POINTER, "]=phase(", phaseFuncArgs.join(), ");")
    
    //Read in other cube data
    for(var j=1; j<(1<<dimension); ++j) {
      code.push(pcube(j), "=", PHASES, "[", POINTER, "+", pdelta(j), "];")
    }

    //Check for boundary crossing
    var vertexPredicate = []
    for(var j=1; j<(1<<dimension); ++j) {
      vertexPredicate.push("(" + pcube(0) + "!==" + pcube(j) + ")")
    }
    code.push("if(", vertexPredicate.join("||"), "){")

    //Read in boundary data
    var vertexArgs = []
    for(var i=0; i<dimension; ++i) {
      vertexArgs.push(index(i))
    }
    for(var i=0; i<arrayArgs; ++i) {
      vertexArgs.push(cube(i,0))
      for(var j=1; j<(1<<dimension); ++j) {
        if(typesig[i]) {
          code.push(cube(i,j), "=", data(i), ".get(", pointer(i), "+", delta(i,j), ");")
        } else {
          code.push(cube(i,j), "=", data(i), "[", pointer(i), "+", delta(i,j), "];")
        }
        vertexArgs.push(cube(i,j))
      }
    }
    for(var i=0; i<(1<<dimension); ++i) {
      vertexArgs.push(pcube(i))
    }
    for(var i=0; i<scalarArgs; ++i) {
      vertexArgs.push(scalar(i))
    }

    //Generate vertex
    code.push("vertex(", vertexArgs.join(), ");",
      vert(0), "=", VERTEX_IDS, "[", POINTER, "]=", VERTEX_COUNT, "++;")

    //Check for face crossings
    var base = (1<<dimension)-1
    var corner = pcube(base)
    for(var j=0; j<dimension; ++j) {
      if((mask & ~(1<<j))===0) {
        //Check face
        var subset = base^(1<<j)
        var edge = pcube(subset)
        var faceArgs = [ ]
        for(var k=subset; k>0; k=(k-1)&subset) {
          faceArgs.push(VERTEX_IDS + "[" + POINTER + "+" + pdelta(k) + "]")
        }
        faceArgs.push(vert(0))
        for(var k=0; k<arrayArgs; ++k) {
          if(j&1) {
            faceArgs.push(cube(k,base), cube(k,subset))
          } else {
            faceArgs.push(cube(k,subset), cube(k,base))
          }
        }
        if(j&1) {
          faceArgs.push(corner, edge)
        } else {
          faceArgs.push(edge, corner)
        }
        for(var k=0; k<scalarArgs; ++k) {
          faceArgs.push(scalar(k))
        }
        code.push("if(", corner, "!==", edge, "){",
          "face(", faceArgs.join(), ")}")
      }
    }
    
    //Increment pointer, close off if statement
    code.push("}",
      POINTER, "+=1;")
  }

  function flip() {
    for(var j=1; j<(1<<dimension); ++j) {
      code.push(TEMPORARY, "=", pdelta(j), ";",
                pdelta(j), "=", qcube(j), ";",
                qcube(j), "=", TEMPORARY, ";")
    }
  }

  function createLoop(i, mask) {
    if(i < 0) {
      processGridCell(mask)
      return
    }
    fillEmptySlice(i)
    code.push("if(", shape(order[i]), ">0){",
      index(order[i]), "=1;")
    createLoop(i-1, mask|(1<<order[i]))

    for(var j=0; j<arrayArgs; ++j) {
      code.push(pointer(j), "+=", step(j,order[i]), ";")
    }
    if(i === dimension-1) {
      code.push(POINTER, "=0;")
      flip()
    }
    forLoopBegin(i, 2)
    createLoop(i-1, mask)
    if(i === dimension-1) {
      code.push("if(", index(order[dimension-1]), "&1){",
        POINTER, "=0;}")
      flip()
    }
    forLoopEnd(i)
    code.push("}")
  }

  createLoop(dimension-1, 0)

  //Release scratch memory
  code.push("freeUint32(", VERTEX_IDS, ");freeUint32(", PHASES, ");")

  //Compile and link procedure
  var procedureCode = [
    "'use strict';",
    "function ", funcName, "(", args.join(), "){",
      "var ", vars.join(), ";",
      code.join(""),
    "}",
    "return ", funcName ].join("")

  var proc = new Function(
    "vertex", 
    "face", 
    "phase", 
    "mallocUint32", 
    "freeUint32",
    procedureCode)
  return proc(
    vertexFunc, 
    faceFunc, 
    phaseFunc, 
    pool.mallocUint32, 
    pool.freeUint32)
}

function createSurfaceExtractor(args) {
  function error(msg) {
    throw new Error("ndarray-extract-contour: " + msg)
  }
  if(typeof args !== "object") {
    error("Must specify arguments")
  }
  var order = args.order
  if(!Array.isArray(order)) {
    error("Must specify order")
  }
  var arrays = args.arrayArguments||1
  if(arrays < 1) {
    error("Must have at least one array argument")
  }
  var scalars = args.scalarArguments||0
  if(scalars < 0) {
    error("Scalar arg count must be > 0")
  }
  if(typeof args.vertex !== "function") {
    error("Must specify vertex creation function")
  }
  if(typeof args.cell !== "function") {
    error("Must specify cell creation function")
  }
  if(typeof args.phase !== "function") {
    error("Must specify phase function")
  }
  var getters = args.getters || []
  var typesig = new Array(arrays)
  for(var i=0; i<arrays; ++i) {
    if(getters.indexOf(i) >= 0) {
      typesig[i] = true
    } else {
      typesig[i] = false
    }
  }
  return compileSurfaceProcedure(
    args.vertex,
    args.cell,
    args.phase,
    scalars,
    order,
    typesig)
}
},{"typedarray-pool":992}],433:[function(require,module,exports){
"use strict"



var fill = require('cwise/lib/wrapper')({"args":["index","array","scalar"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{_inline_1_arg2_.apply(void 0,_inline_1_arg0_)}","args":[{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":1}],"thisVars":[],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"cwise","blockSize":64})

module.exports = function(array, f) {
  fill(array, f)
  return array
}

},{"cwise/lib/wrapper":85}],434:[function(require,module,exports){
'use strict'

module.exports      = gradient

var dup             = require('dup')
var cwiseCompiler   = require('cwise-compiler')

var TEMPLATE_CACHE  = {}
var GRADIENT_CACHE  = {}

var EmptyProc = {
  body: "",
  args: [],
  thisVars: [],
  localVars: []
}

var centralDiff = cwiseCompiler({
  args: [ 'array', 'array', 'array' ],
  pre: EmptyProc,
  post: EmptyProc,
  body: {
    args: [ {
      name: 'out', 
      lvalue: true,
      rvalue: false,
      count: 1
    }, {
      name: 'left', 
      lvalue: false,
      rvalue: true,
      count: 1
    }, {
      name: 'right', 
      lvalue: false,
      rvalue: true,
      count: 1
    }],
    body: "out=0.5*(left-right)",
    thisVars: [],
    localVars: []
  },
  funcName: 'cdiff'
})

var zeroOut = cwiseCompiler({
  args: [ 'array' ],
  pre: EmptyProc,
  post: EmptyProc,
  body: {
    args: [ {
      name: 'out', 
      lvalue: true,
      rvalue: false,
      count: 1
    }],
    body: "out=0",
    thisVars: [],
    localVars: []
  },
  funcName: 'zero'
})

function generateTemplate(d) {
  if(d in TEMPLATE_CACHE) {
    return TEMPLATE_CACHE[d]
  }
  var code = []
  for(var i=0; i<d; ++i) {
    code.push('out', i, 's=0.5*(inp', i, 'l-inp', i, 'r);')
  }
  var args = [ 'array' ]
  var names = ['junk']
  for(var i=0; i<d; ++i) {
    args.push('array')
    names.push('out' + i + 's')
    var o = dup(d)
    o[i] = -1
    args.push({
      array: 0,
      offset: o.slice()
    })
    o[i] = 1
    args.push({
      array: 0,
      offset: o.slice()
    })
    names.push('inp' + i + 'l', 'inp' + i + 'r')
  }
  return TEMPLATE_CACHE[d] = cwiseCompiler({
    args: args,
    pre:  EmptyProc,
    post: EmptyProc,
    body: {
      body: code.join(''),
      args: names.map(function(n) {
        return {
          name: n,
          lvalue: n.indexOf('out') === 0,
          rvalue: n.indexOf('inp') === 0,
          count: (n!=='junk')|0
        }
      }),
      thisVars: [],
      localVars: []
    },
    funcName: 'fdTemplate' + d
  })
}

function generateGradient(boundaryConditions) {
  var token = boundaryConditions.join()
  var proc = GRADIENT_CACHE[token]
  if(proc) {
    return proc
  }

  var d = boundaryConditions.length
  var code = ['function gradient(dst,src){var s=src.shape.slice();' ]
  
  function handleBoundary(facet) {
    var cod = d - facet.length

    var loStr = []
    var hiStr = []
    var pickStr = []
    for(var i=0; i<d; ++i) {
      if(facet.indexOf(i+1) >= 0) {
        pickStr.push('0')
      } else if(facet.indexOf(-(i+1)) >= 0) {
        pickStr.push('s['+i+']-1')
      } else {
        pickStr.push('-1')
        loStr.push('1')
        hiStr.push('s['+i+']-2')
      }
    }
    var boundStr = '.lo(' + loStr.join() + ').hi(' + hiStr.join() + ')'
    if(loStr.length === 0) {
      boundStr = ''
    }
        
    if(cod > 0) {
      code.push('if(1') 
      for(var i=0; i<d; ++i) {
        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
          continue
        }
        code.push('&&s[', i, ']>2')
      }
      code.push('){grad', cod, '(src.pick(', pickStr.join(), ')', boundStr)
      for(var i=0; i<d; ++i) {
        if(facet.indexOf(i+1) >= 0 || facet.indexOf(-(i+1)) >= 0) {
          continue
        }
        code.push(',dst.pick(', pickStr.join(), ',', i, ')', boundStr)
      }
      code.push(');')
    }

    for(var i=0; i<facet.length; ++i) {
      var bnd = Math.abs(facet[i])-1
      var outStr = 'dst.pick(' + pickStr.join() + ',' + bnd + ')' + boundStr
      switch(boundaryConditions[bnd]) {

        case 'clamp':
          var cPickStr = pickStr.slice()
          var dPickStr = pickStr.slice()
          if(facet[i] < 0) {
            cPickStr[bnd] = 's[' + bnd + ']-2'
          } else {
            dPickStr[bnd] = '1'
          }
          if(cod === 0) {
            code.push('if(s[', bnd, ']>1){dst.set(',
              pickStr.join(), ',', bnd, ',0.5*(src.get(',
                cPickStr.join(), ')-src.get(',
                dPickStr.join(), ')))}else{dst.set(',
              pickStr.join(), ',', bnd, ',0)};')
          } else {
            code.push('if(s[', bnd, ']>1){diff(', outStr, 
                ',src.pick(', cPickStr.join(), ')', boundStr, 
                ',src.pick(', dPickStr.join(), ')', boundStr, 
                ');}else{zero(', outStr, ');};')
          }
        break

        case 'mirror':
          if(cod === 0) {
            code.push('dst.set(', pickStr.join(), ',', bnd, ',0);')
          } else {
            code.push('zero(', outStr, ');')
          }
        break

        case 'wrap':
          var aPickStr = pickStr.slice()
          var bPickStr = pickStr.slice()
          if(facet[i] < 0) {
            aPickStr[bnd] = 's[' + bnd + ']-2'
            bPickStr[bnd] = '0'
            
          } else {
            aPickStr[bnd] = 's[' + bnd + ']-1'
            bPickStr[bnd] = '1'
          }
          if(cod === 0) {
            code.push('if(s[', bnd, ']>2){dst.set(',
              pickStr.join(), ',', bnd, ',0.5*(src.get(',
                aPickStr.join(), ')-src.get(',
                bPickStr.join(), ')))}else{dst.set(',
              pickStr.join(), ',', bnd, ',0)};')
          } else {
            code.push('if(s[', bnd, ']>2){diff(', outStr, 
                ',src.pick(', aPickStr.join(), ')', boundStr, 
                ',src.pick(', bPickStr.join(), ')', boundStr, 
                ');}else{zero(', outStr, ');};')
          }
        break

        default:
          throw new Error('ndarray-gradient: Invalid boundary condition')
      }
    }

    if(cod > 0) {
      code.push('};')
    }
  }

  //Enumerate ridges, facets, etc. of hypercube
  for(var i=0; i<(1<<d); ++i) {
    var faces = []
    for(var j=0; j<d; ++j) {
      if(i & (1<<j)) {
        faces.push(j+1)
      }
    }
    for(var k=0; k<(1<<faces.length); ++k) {
      var sfaces = faces.slice()
      for(var j=0; j<faces.length; ++j) {
        if(k & (1<<j)) {
          sfaces[j] = -sfaces[j]
        }
      }
      handleBoundary(sfaces)
    }
  }

  code.push('return dst;};return gradient')

  //Compile and link routine, save cached procedure
  var linkNames = [ 'diff', 'zero' ]
  var linkArgs  = [ centralDiff, zeroOut ]
  for(var i=1; i<=d; ++i) {
    linkNames.push('grad' + i)
    linkArgs.push(generateTemplate(i))
  }
  linkNames.push(code.join(''))

  var link = Function.apply(void 0, linkNames)
  var proc = link.apply(void 0, linkArgs)
  TEMPLATE_CACHE[token] = proc
  return proc
}

function gradient(out, inp, bc) {
  if(Array.isArray(bc)) {
    if(bc.length !== inp.dimension) {
      throw new Error('ndarray-gradient: invalid boundary conditions')
    }
  } else if(typeof bc === 'string') {
    bc = dup(inp.dimension, bc)
  } else {
    bc = dup(inp.dimension, 'clamp')
  }
  if(out.dimension !== inp.dimension + 1) {
    throw new Error('ndarray-gradient: output dimension must be +1 input dimension')
  }
  if(out.shape[inp.dimension] !== inp.dimension) {
    throw new Error('ndarray-gradient: output shape must match input shape')
  }
  for(var i=0; i<inp.dimension; ++i) {
    if(out.shape[i] !== inp.shape[i]) {
      throw new Error('ndarray-gradient: shape mismatch')
    }
  }
  if(inp.size === 0) {
    return out
  }
  if(inp.dimension <= 0) {
    out.set(0)
    return out
  }
  var cached = generateGradient(bc)
  return cached(out, inp)
}
},{"cwise-compiler":82,"dup":90}],435:[function(require,module,exports){
'use strict'

var warp = require('ndarray-warp')
var invert = require('gl-matrix-invert')

module.exports = applyHomography

function applyHomography(dest, src, Xi) {
  var n = src.dimension
  var X = invert([], Xi)
  warp(dest, src, function(out_c, inp_c) {
    for(var i=0; i<n; ++i) {
      out_c[i] = X[(n+1)*n + i]
      for(var j=0; j<n; ++j) {
        out_c[i] += X[(n+1)*j+i] * inp_c[j]
      }
    }
    var w = X[(n+1)*(n+1)-1]
    for(var j=0; j<n; ++j) {
      w += X[(n+1)*j+n] * inp_c[j]
    }
    var wr = 1.0 / w
    for(var i=0; i<n; ++i) {
      out_c[i] *= wr
    }
    return out_c
  })
  return dest
}
},{"gl-matrix-invert":167,"ndarray-warp":442}],436:[function(require,module,exports){
"use strict"

function interp1d(arr, x) {
  var ix = Math.floor(x)
    , fx = x - ix
    , s0 = 0 <= ix   && ix   < arr.shape[0]
    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
    , w0 = s0 ? +arr.get(ix)   : 0.0
    , w1 = s1 ? +arr.get(ix+1) : 0.0
  return (1.0-fx)*w0 + fx*w1
}

function interp2d(arr, x, y) {
  var ix = Math.floor(x)
    , fx = x - ix
    , s0 = 0 <= ix   && ix   < arr.shape[0]
    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
    , iy = Math.floor(y)
    , fy = y - iy
    , t0 = 0 <= iy   && iy   < arr.shape[1]
    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
    , w00 = s0&&t0 ? arr.get(ix  ,iy  ) : 0.0
    , w01 = s0&&t1 ? arr.get(ix  ,iy+1) : 0.0
    , w10 = s1&&t0 ? arr.get(ix+1,iy  ) : 0.0
    , w11 = s1&&t1 ? arr.get(ix+1,iy+1) : 0.0
  return (1.0-fy) * ((1.0-fx)*w00 + fx*w10) + fy * ((1.0-fx)*w01 + fx*w11)
}

function interp3d(arr, x, y, z) {
  var ix = Math.floor(x)
    , fx = x - ix
    , s0 = 0 <= ix   && ix   < arr.shape[0]
    , s1 = 0 <= ix+1 && ix+1 < arr.shape[0]
    , iy = Math.floor(y)
    , fy = y - iy
    , t0 = 0 <= iy   && iy   < arr.shape[1]
    , t1 = 0 <= iy+1 && iy+1 < arr.shape[1]
    , iz = Math.floor(z)
    , fz = z - iz
    , u0 = 0 <= iz   && iz   < arr.shape[2]
    , u1 = 0 <= iz+1 && iz+1 < arr.shape[2]
    , w000 = s0&&t0&&u0 ? arr.get(ix,iy,iz)       : 0.0
    , w010 = s0&&t1&&u0 ? arr.get(ix,iy+1,iz)     : 0.0
    , w100 = s1&&t0&&u0 ? arr.get(ix+1,iy,iz)     : 0.0
    , w110 = s1&&t1&&u0 ? arr.get(ix+1,iy+1,iz)   : 0.0
    , w001 = s0&&t0&&u1 ? arr.get(ix,iy,iz+1)     : 0.0
    , w011 = s0&&t1&&u1 ? arr.get(ix,iy+1,iz+1)   : 0.0
    , w101 = s1&&t0&&u1 ? arr.get(ix+1,iy,iz+1)   : 0.0
    , w111 = s1&&t1&&u1 ? arr.get(ix+1,iy+1,iz+1) : 0.0
  return (1.0-fz) * ((1.0-fy) * ((1.0-fx)*w000 + fx*w100) + fy * ((1.0-fx)*w010 + fx*w110)) + fz * ((1.0-fy) * ((1.0-fx)*w001 + fx*w101) + fy * ((1.0-fx)*w011 + fx*w111))
}

function interpNd(arr) {
  var d = arr.shape.length|0
    , ix = new Array(d)
    , fx = new Array(d)
    , s0 = new Array(d)
    , s1 = new Array(d)
    , i, t
  for(i=0; i<d; ++i) {
    t = +arguments[i+1]
    ix[i] = Math.floor(t)
    fx[i] = t - ix[i]
    s0[i] = (0 <= ix[i]   && ix[i]   < arr.shape[i])
    s1[i] = (0 <= ix[i]+1 && ix[i]+1 < arr.shape[i])
  }
  var r = 0.0, j, w, idx
i_loop:
  for(i=0; i<(1<<d); ++i) {
    w = 1.0
    idx = arr.offset
    for(j=0; j<d; ++j) {
      if(i & (1<<j)) {
        if(!s1[j]) {
          continue i_loop
        }
        w *= fx[j]
        idx += arr.stride[j] * (ix[j] + 1)
      } else {
        if(!s0[j]) {
          continue i_loop
        }
        w *= 1.0 - fx[j]
        idx += arr.stride[j] * ix[j]
      }
    }
    r += w * arr.data[idx]
  }
  return r
}

function interpolate(arr, x, y, z) {
  switch(arr.shape.length) {
    case 0:
      return 0.0
    case 1:
      return interp1d(arr, x)
    case 2:
      return interp2d(arr, x, y)
    case 3:
      return interp3d(arr, x, y, z)
    default:
      return interpNd.apply(undefined, arguments)
  }
}
module.exports = interpolate
module.exports.d1 = interp1d
module.exports.d2 = interp2d
module.exports.d3 = interp3d

},{}],437:[function(require,module,exports){
"use strict"

var compile = require("cwise-compiler")

var EmptyProc = {
  body: "",
  args: [],
  thisVars: [],
  localVars: []
}

function fixup(x) {
  if(!x) {
    return EmptyProc
  }
  for(var i=0; i<x.args.length; ++i) {
    var a = x.args[i]
    if(i === 0) {
      x.args[i] = {name: a, lvalue:true, rvalue: !!x.rvalue, count:x.count||1 }
    } else {
      x.args[i] = {name: a, lvalue:false, rvalue:true, count: 1}
    }
  }
  if(!x.thisVars) {
    x.thisVars = []
  }
  if(!x.localVars) {
    x.localVars = []
  }
  return x
}

function pcompile(user_args) {
  return compile({
    args:     user_args.args,
    pre:      fixup(user_args.pre),
    body:     fixup(user_args.body),
    post:     fixup(user_args.proc),
    funcName: user_args.funcName
  })
}

function makeOp(user_args) {
  var args = []
  for(var i=0; i<user_args.args.length; ++i) {
    args.push("a"+i)
  }
  var wrapper = new Function("P", [
    "return function ", user_args.funcName, "_ndarrayops(", args.join(","), ") {P(", args.join(","), ");return a0}"
  ].join(""))
  return wrapper(pcompile(user_args))
}

var assign_ops = {
  add:  "+",
  sub:  "-",
  mul:  "*",
  div:  "/",
  mod:  "%",
  band: "&",
  bor:  "|",
  bxor: "^",
  lshift: "<<",
  rshift: ">>",
  rrshift: ">>>"
}
;(function(){
  for(var id in assign_ops) {
    var op = assign_ops[id]
    exports[id] = makeOp({
      args: ["array","array","array"],
      body: {args:["a","b","c"],
             body: "a=b"+op+"c"},
      funcName: id
    })
    exports[id+"eq"] = makeOp({
      args: ["array","array"],
      body: {args:["a","b"],
             body:"a"+op+"=b"},
      rvalue: true,
      funcName: id+"eq"
    })
    exports[id+"s"] = makeOp({
      args: ["array", "array", "scalar"],
      body: {args:["a","b","s"],
             body:"a=b"+op+"s"},
      funcName: id+"s"
    })
    exports[id+"seq"] = makeOp({
      args: ["array","scalar"],
      body: {args:["a","s"],
             body:"a"+op+"=s"},
      rvalue: true,
      funcName: id+"seq"
    })
  }
})();

var unary_ops = {
  not: "!",
  bnot: "~",
  neg: "-",
  recip: "1.0/"
}
;(function(){
  for(var id in unary_ops) {
    var op = unary_ops[id]
    exports[id] = makeOp({
      args: ["array", "array"],
      body: {args:["a","b"],
             body:"a="+op+"b"},
      funcName: id
    })
    exports[id+"eq"] = makeOp({
      args: ["array"],
      body: {args:["a"],
             body:"a="+op+"a"},
      rvalue: true,
      count: 2,
      funcName: id+"eq"
    })
  }
})();

var binary_ops = {
  and: "&&",
  or: "||",
  eq: "===",
  neq: "!==",
  lt: "<",
  gt: ">",
  leq: "<=",
  geq: ">="
}
;(function() {
  for(var id in binary_ops) {
    var op = binary_ops[id]
    exports[id] = makeOp({
      args: ["array","array","array"],
      body: {args:["a", "b", "c"],
             body:"a=b"+op+"c"},
      funcName: id
    })
    exports[id+"s"] = makeOp({
      args: ["array","array","scalar"],
      body: {args:["a", "b", "s"],
             body:"a=b"+op+"s"},
      funcName: id+"s"
    })
    exports[id+"eq"] = makeOp({
      args: ["array", "array"],
      body: {args:["a", "b"],
             body:"a=a"+op+"b"},
      rvalue:true,
      count:2,
      funcName: id+"eq"
    })
    exports[id+"seq"] = makeOp({
      args: ["array", "scalar"],
      body: {args:["a","s"],
             body:"a=a"+op+"s"},
      rvalue:true,
      count:2,
      funcName: id+"seq"
    })
  }
})();

var math_unary = [
  "abs",
  "acos",
  "asin",
  "atan",
  "ceil",
  "cos",
  "exp",
  "floor",
  "log",
  "round",
  "sin",
  "sqrt",
  "tan"
]
;(function() {
  for(var i=0; i<math_unary.length; ++i) {
    var f = math_unary[i]
    exports[f] = makeOp({
                    args: ["array", "array"],
                    pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                    body: {args:["a","b"], body:"a=this_f(b)", thisVars:["this_f"]},
                    funcName: f
                  })
    exports[f+"eq"] = makeOp({
                      args: ["array"],
                      pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                      body: {args: ["a"], body:"a=this_f(a)", thisVars:["this_f"]},
                      rvalue: true,
                      count: 2,
                      funcName: f+"eq"
                    })
  }
})();

var math_comm = [
  "max",
  "min",
  "atan2",
  "pow"
]
;(function(){
  for(var i=0; i<math_comm.length; ++i) {
    var f= math_comm[i]
    exports[f] = makeOp({
                  args:["array", "array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
                  funcName: f
                })
    exports[f+"s"] = makeOp({
                  args:["array", "array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(b,c)", thisVars:["this_f"]},
                  funcName: f+"s"
                  })
    exports[f+"eq"] = makeOp({ args:["array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
                  rvalue: true,
                  count: 2,
                  funcName: f+"eq"
                  })
    exports[f+"seq"] = makeOp({ args:["array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(a,b)", thisVars:["this_f"]},
                  rvalue:true,
                  count:2,
                  funcName: f+"seq"
                  })
  }
})();

var math_noncomm = [
  "atan2",
  "pow"
]
;(function(){
  for(var i=0; i<math_noncomm.length; ++i) {
    var f= math_noncomm[i]
    exports[f+"op"] = makeOp({
                  args:["array", "array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
                  funcName: f+"op"
                })
    exports[f+"ops"] = makeOp({
                  args:["array", "array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b","c"], body:"a=this_f(c,b)", thisVars:["this_f"]},
                  funcName: f+"ops"
                  })
    exports[f+"opeq"] = makeOp({ args:["array", "array"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
                  rvalue: true,
                  count: 2,
                  funcName: f+"opeq"
                  })
    exports[f+"opseq"] = makeOp({ args:["array", "scalar"],
                  pre: {args:[], body:"this_f=Math."+f, thisVars:["this_f"]},
                  body: {args:["a","b"], body:"a=this_f(b,a)", thisVars:["this_f"]},
                  rvalue:true,
                  count:2,
                  funcName: f+"opseq"
                  })
  }
})();

exports.any = compile({
  args:["array"],
  pre: EmptyProc,
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "if(a){return true}", localVars: [], thisVars: []},
  post: {args:[], localVars:[], thisVars:[], body:"return false"},
  funcName: "any"
})

exports.all = compile({
  args:["array"],
  pre: EmptyProc,
  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1}], body: "if(!x){return false}", localVars: [], thisVars: []},
  post: {args:[], localVars:[], thisVars:[], body:"return true"},
  funcName: "all"
})

exports.sum = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s+=a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "sum"
})

exports.prod = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=1"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:1}], body: "this_s*=a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "prod"
})

exports.norm2squared = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "norm2squared"
})
  
exports.norm2 = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:2}], body: "this_s+=a*a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return Math.sqrt(this_s)"},
  funcName: "norm2"
})
  

exports.norminf = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:4}], body:"if(-a>this_s){this_s=-a}else if(a>this_s){this_s=a}", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "norminf"
})

exports.norm1 = compile({
  args:["array"],
  pre: {args:[], localVars:[], thisVars:["this_s"], body:"this_s=0"},
  body: {args:[{name:"a", lvalue:false, rvalue:true, count:3}], body: "this_s+=a<0?-a:a", localVars: [], thisVars: ["this_s"]},
  post: {args:[], localVars:[], thisVars:["this_s"], body:"return this_s"},
  funcName: "norm1"
})

exports.sup = compile({
  args: [ "array" ],
  pre:
   { body: "this_h=-Infinity",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] },
  body:
   { body: "if(_inline_1_arg0_>this_h)this_h=_inline_1_arg0_",
     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
     thisVars: [ "this_h" ],
     localVars: [] },
  post:
   { body: "return this_h",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] }
 })

exports.inf = compile({
  args: [ "array" ],
  pre:
   { body: "this_h=Infinity",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] },
  body:
   { body: "if(_inline_1_arg0_<this_h)this_h=_inline_1_arg0_",
     args: [{"name":"_inline_1_arg0_","lvalue":false,"rvalue":true,"count":2} ],
     thisVars: [ "this_h" ],
     localVars: [] },
  post:
   { body: "return this_h",
     args: [],
     thisVars: [ "this_h" ],
     localVars: [] }
 })

exports.argmin = compile({
  args:["index","array","shape"],
  pre:{
    body:"{this_v=Infinity;this_i=_inline_0_arg2_.slice(0)}",
    args:[
      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
      ],
    thisVars:["this_i","this_v"],
    localVars:[]},
  body:{
    body:"{if(_inline_1_arg1_<this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
    args:[
      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
    thisVars:["this_i","this_v"],
    localVars:["_inline_1_k"]},
  post:{
    body:"{return this_i}",
    args:[],
    thisVars:["this_i"],
    localVars:[]}
})

exports.argmax = compile({
  args:["index","array","shape"],
  pre:{
    body:"{this_v=-Infinity;this_i=_inline_0_arg2_.slice(0)}",
    args:[
      {name:"_inline_0_arg0_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg1_",lvalue:false,rvalue:false,count:0},
      {name:"_inline_0_arg2_",lvalue:false,rvalue:true,count:1}
      ],
    thisVars:["this_i","this_v"],
    localVars:[]},
  body:{
    body:"{if(_inline_1_arg1_>this_v){this_v=_inline_1_arg1_;for(var _inline_1_k=0;_inline_1_k<_inline_1_arg0_.length;++_inline_1_k){this_i[_inline_1_k]=_inline_1_arg0_[_inline_1_k]}}}",
    args:[
      {name:"_inline_1_arg0_",lvalue:false,rvalue:true,count:2},
      {name:"_inline_1_arg1_",lvalue:false,rvalue:true,count:2}],
    thisVars:["this_i","this_v"],
    localVars:["_inline_1_k"]},
  post:{
    body:"{return this_i}",
    args:[],
    thisVars:["this_i"],
    localVars:[]}
})  

exports.random = makeOp({
  args: ["array"],
  pre: {args:[], body:"this_f=Math.random", thisVars:["this_f"]},
  body: {args: ["a"], body:"a=this_f()", thisVars:["this_f"]},
  funcName: "random"
})

exports.assign = makeOp({
  args:["array", "array"],
  body: {args:["a", "b"], body:"a=b"},
  funcName: "assign" })

exports.assigns = makeOp({
  args:["array", "scalar"],
  body: {args:["a", "b"], body:"a=b"},
  funcName: "assigns" })


exports.equals = compile({
  args:["array", "array"],
  pre: EmptyProc,
  body: {args:[{name:"x", lvalue:false, rvalue:true, count:1},
               {name:"y", lvalue:false, rvalue:true, count:1}], 
        body: "if(x!==y){return false}", 
        localVars: [], 
        thisVars: []},
  post: {args:[], localVars:[], thisVars:[], body:"return true"},
  funcName: "equals"
})



},{"cwise-compiler":82}],438:[function(require,module,exports){
"use strict"

var ndarray = require("ndarray")
var do_convert = require("./doConvert.js")

module.exports = function convert(arr, result) {
  var shape = [], c = arr, sz = 1
  while(Array.isArray(c)) {
    shape.push(c.length)
    sz *= c.length
    c = c[0]
  }
  if(shape.length === 0) {
    return ndarray()
  }
  if(!result) {
    result = ndarray(new Float64Array(sz), shape)
  }
  do_convert(result, arr)
  return result
}

},{"./doConvert.js":439,"ndarray":443}],439:[function(require,module,exports){
module.exports=require('cwise-compiler')({"args":["array","scalar","index"],"pre":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"body":{"body":"{\nvar _inline_1_v=_inline_1_arg1_,_inline_1_i\nfor(_inline_1_i=0;_inline_1_i<_inline_1_arg2_.length-1;++_inline_1_i) {\n_inline_1_v=_inline_1_v[_inline_1_arg2_[_inline_1_i]]\n}\n_inline_1_arg0_=_inline_1_v[_inline_1_arg2_[_inline_1_arg2_.length-1]]\n}","args":[{"name":"_inline_1_arg0_","lvalue":true,"rvalue":false,"count":1},{"name":"_inline_1_arg1_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_1_arg2_","lvalue":false,"rvalue":true,"count":4}],"thisVars":[],"localVars":["_inline_1_i","_inline_1_v"]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"funcName":"convert","blockSize":64})

},{"cwise-compiler":82}],440:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")

var INSERTION_SORT_THRESHOLD = 32

function getMallocFree(dtype) {
  switch(dtype) {
    case "uint8":
      return [pool.mallocUint8, pool.freeUint8]
    case "uint16":
      return [pool.mallocUint16, pool.freeUint16]
    case "uint32":
      return [pool.mallocUint32, pool.freeUint32]
    case "int8":
      return [pool.mallocInt8, pool.freeInt8]
    case "int16":
      return [pool.mallocInt16, pool.freeInt16]
    case "int32":
      return [pool.mallocInt32, pool.freeInt32]
    case "float32":
      return [pool.mallocFloat, pool.freeFloat]
    case "float64":
      return [pool.mallocDouble, pool.freeDouble]
    default:
      return null
  }
}

function shapeArgs(dimension) {
  var args = []
  for(var i=0; i<dimension; ++i) {
    args.push("s"+i)
  }
  for(var i=0; i<dimension; ++i) {
    args.push("n"+i)
  }
  for(var i=1; i<dimension; ++i) {
    args.push("d"+i)
  }
  for(var i=1; i<dimension; ++i) {
    args.push("e"+i)
  }
  for(var i=1; i<dimension; ++i) {
    args.push("f"+i)
  }
  return args
}

function createInsertionSort(order, dtype) {

  var code = ["'use strict'"]
  var funcName = ["ndarrayInsertionSort", order.join("d"), dtype].join("")
  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
  var allocator = getMallocFree(dtype)
  
  var vars = [ "i,j,cptr,ptr=left*s0+offset" ]
  
  if(order.length > 1) {
    var scratch_shape = []
    for(var i=1; i<order.length; ++i) {
      vars.push("i"+i)
      scratch_shape.push("n"+i)
    }
    if(allocator) {
      vars.push("scratch=malloc(" + scratch_shape.join("*") + ")")
    } else {
      vars.push("scratch=new Array("+scratch_shape.join("*") + ")")
    }
    vars.push("dptr","sptr","a","b")
  } else {
    vars.push("scratch")
  }
  
  function dataRead(ptr) {
    if(dtype === "generic") {
      return ["data.get(", ptr, ")"].join("")
    }
    return ["data[",ptr,"]"].join("")
  }
  
  function dataWrite(ptr, v) {
    if(dtype === "generic") {
      return ["data.set(", ptr, ",", v, ")"].join("")
    }
    return ["data[",ptr,"]=",v].join("")
  }
  
  //Create function header
  code.push(
    ["function ", funcName, "(", funcArgs.join(","), "){var ", vars.join(",")].join(""),
      "for(i=left+1;i<=right;++i){",
        "j=i;ptr+=s0",
        "cptr=ptr")
  
  
  if(order.length > 1) {
  
    //Copy data into scratch
    code.push("dptr=0;sptr=ptr")
    for(var i=order.length-1; i>=0; --i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
    }
    code.push("scratch[dptr++]=",dataRead("sptr"))
    for(var i=0; i<order.length; ++i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push("sptr+=d"+j,"}")
    }

    
    //Compare items in outer loop
    code.push("__g:while(j-->left){",
              "dptr=0",
              "sptr=cptr-s0")
    for(var i=1; i<order.length; ++i) {
      if(i === 1) {
        code.push("__l:")
      }
      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
    }
    code.push(["a=", dataRead("sptr"),"\nb=scratch[dptr]\nif(a<b){break __g}\nif(a>b){break __l}"].join(""))
    for(var i=order.length-1; i>=1; --i) {
      code.push(
        "sptr+=e"+i,
        "dptr+=f"+i,
        "}")
    }
    
    //Copy data back
    code.push("dptr=cptr;sptr=cptr-s0")
    for(var i=order.length-1; i>=0; --i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
    }
    code.push(dataWrite("dptr", dataRead("sptr")))
    for(var i=0; i<order.length; ++i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push(["dptr+=d",j,";sptr+=d",j].join(""),"}")
    }
    
    //Close while loop
    code.push("cptr-=s0\n}")

    //Copy scratch into cptr
    code.push("dptr=cptr;sptr=0")
    for(var i=order.length-1; i>=0; --i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
    }
    code.push(dataWrite("dptr", "scratch[sptr++]"))
    for(var i=0; i<order.length; ++i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push("dptr+=d"+j,"}")
    }
  } else {
    code.push("scratch=" + dataRead("ptr"),
              "while((j-->left)&&("+dataRead("cptr-s0")+">scratch)){",
                dataWrite("cptr", dataRead("cptr-s0")),
                "cptr-=s0",
              "}",
              dataWrite("cptr", "scratch"))
  }
  
  //Close outer loop body
  code.push("}")
  if(order.length > 1 && allocator) {
    code.push("free(scratch)")
  }
  code.push("} return " + funcName)
  
  //Compile and link function
  if(allocator) {
    var result = new Function("malloc", "free", code.join("\n"))
    return result(allocator[0], allocator[1])
  } else {
    var result = new Function(code.join("\n"))
    return result()
  }
}

function createQuickSort(order, dtype, insertionSort) {
  var code = [ "'use strict'" ]
  var funcName = ["ndarrayQuickSort", order.join("d"), dtype].join("")
  var funcArgs = ["left", "right", "data", "offset" ].concat(shapeArgs(order.length))
  var allocator = getMallocFree(dtype)
  var labelCounter=0
  
  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
  
  var vars = [
    "sixth=((right-left+1)/6)|0",
    "index1=left+sixth",
    "index5=right-sixth",
    "index3=(left+right)>>1",
    "index2=index3-sixth",
    "index4=index3+sixth",
    "el1=index1",
    "el2=index2",
    "el3=index3",
    "el4=index4",
    "el5=index5",
    "less=left+1",
    "great=right-1",
    "pivots_are_equal=true",
    "tmp",
    "tmp0",
    "x",
    "y",
    "z",
    "k",
    "ptr0",
    "ptr1",
    "ptr2",
    "comp_pivot1=0",
    "comp_pivot2=0",
    "comp=0"
  ]
  
  if(order.length > 1) {
    var ele_size = []
    for(var i=1; i<order.length; ++i) {
      ele_size.push("n"+i)
      vars.push("i"+i)
    }
    for(var i=0; i<8; ++i) {
      vars.push("b_ptr"+i)
    }
    vars.push(
      "ptr3",
      "ptr4",
      "ptr5",
      "ptr6",
      "ptr7",
      "pivot_ptr",
      "ptr_shift",
      "elementSize="+ele_size.join("*"))
    if(allocator) {
      vars.push("pivot1=malloc(elementSize)",
                "pivot2=malloc(elementSize)")
    } else {
      vars.push("pivot1=new Array(elementSize),pivot2=new Array(elementSize)")
    }
  } else {
    vars.push("pivot1", "pivot2")
  }
  
  //Initialize local variables
  code.push("var " + vars.join(","))
  
  function toPointer(v) {
    return ["(offset+",v,"*s0)"].join("")
  }
  
  function dataRead(ptr) {
    if(dtype === "generic") {
      return ["data.get(", ptr, ")"].join("")
    }
    return ["data[",ptr,"]"].join("")
  }
  
  function dataWrite(ptr, v) {
    if(dtype === "generic") {
      return ["data.set(", ptr, ",", v, ")"].join("")
    }
    return ["data[",ptr,"]=",v].join("")
  }
  
  function cacheLoop(ptrs, usePivot, body) {
    if(ptrs.length === 1) {
      code.push("ptr0="+toPointer(ptrs[0]))
    } else {
      for(var i=0; i<ptrs.length; ++i) {
        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
      }
    }
    if(usePivot) {
      code.push("pivot_ptr=0")
    }
    code.push("ptr_shift=offset")
    for(var i=order.length-1; i>=0; --i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      code.push(["for(i",j,"=0;i",j,"<n",j,";++i",j,"){"].join(""))
    }
    if(ptrs.length > 1) {
      for(var i=0; i<ptrs.length; ++i) {
        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
      }
    }
    code.push(body)
    if(usePivot) {
      code.push("++pivot_ptr")
    }
    for(var i=0; i<order.length; ++i) {
      var j = order[i]
      if(j === 0) {
        continue
      }
      if(ptrs.length>1) {
        code.push("ptr_shift+=d"+j)
      } else {
        code.push("ptr0+=d"+j)
      }
      code.push("}")
    }
  }
  
  function lexicoLoop(label, ptrs, usePivot, body) {
    if(ptrs.length === 1) {
      code.push("ptr0="+toPointer(ptrs[0]))
    } else {
      for(var i=0; i<ptrs.length; ++i) {
        code.push(["b_ptr",i,"=s0*",ptrs[i]].join(""))
      }
      code.push("ptr_shift=offset")
    }
    if(usePivot) {
      code.push("pivot_ptr=0")
    }
    if(label) {
      code.push(label+":")
    }
    for(var i=1; i<order.length; ++i) {
      code.push(["for(i",i,"=0;i",i,"<n",i,";++i",i,"){"].join(""))
    }
    if(ptrs.length > 1) {
      for(var i=0; i<ptrs.length; ++i) {
        code.push(["ptr",i,"=b_ptr",i,"+ptr_shift"].join(""))
      }
    }
    code.push(body)
    for(var i=order.length-1; i>=1; --i) {
      if(usePivot) {
        code.push("pivot_ptr+=f"+i)
      }
      if(ptrs.length > 1) {
        code.push("ptr_shift+=e"+i)
      } else {
        code.push("ptr0+=e"+i)
      }
      code.push("}")
    }
  }
  
  function cleanUp() {
    if(order.length > 1 && allocator) {
      code.push("free(pivot1)", "free(pivot2)")
    }
  }
  
  function compareSwap(a_id, b_id) {
    var a = "el"+a_id
    var b = "el"+b_id
    if(order.length > 1) {
      var lbl = "__l" + (++labelCounter)
      lexicoLoop(lbl, [a, b], false, [
        "comp=",dataRead("ptr0"),"-",dataRead("ptr1"),"\n",
        "if(comp>0){tmp0=", a, ";",a,"=",b,";", b,"=tmp0;break ", lbl,"}\n",
        "if(comp<0){break ", lbl, "}"
      ].join(""))
    } else {
      code.push(["if(", dataRead(toPointer(a)), ">", dataRead(toPointer(b)), "){tmp0=", a, ";",a,"=",b,";", b,"=tmp0}"].join(""))
    }
  }
  
  compareSwap(1, 2)
  compareSwap(4, 5)
  compareSwap(1, 3)
  compareSwap(2, 3)
  compareSwap(1, 4)
  compareSwap(3, 4)
  compareSwap(2, 5)
  compareSwap(2, 3)
  compareSwap(4, 5)
  
  if(order.length > 1) {
    cacheLoop(["el1", "el2", "el3", "el4", "el5", "index1", "index3", "index5"], true, [
      "pivot1[pivot_ptr]=",dataRead("ptr1"),"\n",
      "pivot2[pivot_ptr]=",dataRead("ptr3"),"\n",
      "pivots_are_equal=pivots_are_equal&&(pivot1[pivot_ptr]===pivot2[pivot_ptr])\n",
      "x=",dataRead("ptr0"),"\n",
      "y=",dataRead("ptr2"),"\n",
      "z=",dataRead("ptr4"),"\n",
      dataWrite("ptr5", "x"),"\n",
      dataWrite("ptr6", "y"),"\n",
      dataWrite("ptr7", "z")
    ].join(""))
  } else {
    code.push([
      "pivot1=", dataRead(toPointer("el2")), "\n",
      "pivot2=", dataRead(toPointer("el4")), "\n",
      "pivots_are_equal=pivot1===pivot2\n",
      "x=", dataRead(toPointer("el1")), "\n",
      "y=", dataRead(toPointer("el3")), "\n",
      "z=", dataRead(toPointer("el5")), "\n",
      dataWrite(toPointer("index1"), "x"), "\n",
      dataWrite(toPointer("index3"), "y"), "\n",
      dataWrite(toPointer("index5"), "z")
    ].join(""))
  }
  

  function moveElement(dst, src) {
    if(order.length > 1) {
      cacheLoop([dst, src], false,
        dataWrite("ptr0", dataRead("ptr1"))
      )
    } else {
      code.push(dataWrite(toPointer(dst), dataRead(toPointer(src))))
    }
  }
  
  moveElement("index2", "left")
  moveElement("index4", "right")
  
  function comparePivot(result, ptr, n) {
    if(order.length > 1) {
      var lbl = "__l" + (++labelCounter)
      lexicoLoop(lbl, [ptr], true, [
        result,"=",dataRead("ptr0"),"-pivot",n,"[pivot_ptr]\n",
        "if(",result,"!==0){break ", lbl, "}"
      ].join(""))
    } else {
      code.push([result,"=", dataRead(toPointer(ptr)), "-pivot", n].join(""))
    }
  }
  
  function swapElements(a, b) {
    if(order.length > 1) {
      cacheLoop([a,b],false,[
        "tmp=",dataRead("ptr0"),"\n",
        dataWrite("ptr0", dataRead("ptr1")),"\n",
        dataWrite("ptr1", "tmp")
      ].join(""))
    } else {
      code.push([
        "ptr0=",toPointer(a),"\n",
        "ptr1=",toPointer(b),"\n",
        "tmp=",dataRead("ptr0"),"\n",
        dataWrite("ptr0", dataRead("ptr1")),"\n",
        dataWrite("ptr1", "tmp")
      ].join(""))
    }
  }
  
  function tripleSwap(k, less, great) {
    if(order.length > 1) {
      cacheLoop([k,less,great], false, [
        "tmp=",dataRead("ptr0"),"\n",
        dataWrite("ptr0", dataRead("ptr1")),"\n",
        dataWrite("ptr1", dataRead("ptr2")),"\n",
        dataWrite("ptr2", "tmp")
      ].join(""))
      code.push("++"+less, "--"+great)
    } else {
      code.push([
        "ptr0=",toPointer(k),"\n",
        "ptr1=",toPointer(less),"\n",
        "ptr2=",toPointer(great),"\n",
        "++",less,"\n",
        "--",great,"\n",
        "tmp=", dataRead("ptr0"), "\n",
        dataWrite("ptr0", dataRead("ptr1")), "\n",
        dataWrite("ptr1", dataRead("ptr2")), "\n",
        dataWrite("ptr2", "tmp")
      ].join(""))
    }
  }
  
  function swapAndDecrement(k, great) {
    swapElements(k, great)
    code.push("--"+great)
  }
    
  code.push("if(pivots_are_equal){")
    //Pivots are equal case
    code.push("for(k=less;k<=great;++k){")
      comparePivot("comp", "k", 1)
      code.push("if(comp===0){continue}")
      code.push("if(comp<0){")
        code.push("if(k!==less){")
          swapElements("k", "less")
        code.push("}")
        code.push("++less")
      code.push("}else{")
        code.push("while(true){")
          comparePivot("comp", "great", 1)
          code.push("if(comp>0){")
            code.push("great--")
          code.push("}else if(comp<0){")
            tripleSwap("k", "less", "great")
            code.push("break")
          code.push("}else{")
            swapAndDecrement("k", "great")
            code.push("break")
          code.push("}")
        code.push("}")
      code.push("}")
    code.push("}")
  code.push("}else{")
    //Pivots not equal case
    code.push("for(k=less;k<=great;++k){")
      comparePivot("comp_pivot1", "k", 1)
      code.push("if(comp_pivot1<0){")
        code.push("if(k!==less){")
          swapElements("k", "less")
        code.push("}")
        code.push("++less")
      code.push("}else{")
        comparePivot("comp_pivot2", "k", 2)
        code.push("if(comp_pivot2>0){")
          code.push("while(true){")
            comparePivot("comp", "great", 2)
            code.push("if(comp>0){")
              code.push("if(--great<k){break}")
              code.push("continue")
            code.push("}else{")
              comparePivot("comp", "great", 1)
              code.push("if(comp<0){")
                tripleSwap("k", "less", "great")
              code.push("}else{")
                swapAndDecrement("k", "great")
              code.push("}")
              code.push("break")
            code.push("}")
          code.push("}")
        code.push("}")
      code.push("}")
    code.push("}")
  code.push("}")
  
  //Move pivots to correct place
  function storePivot(mem_dest, pivot_dest, pivot) {
    if(order.length>1) {
      cacheLoop([mem_dest, pivot_dest], true, [
        dataWrite("ptr0", dataRead("ptr1")), "\n",
        dataWrite("ptr1", ["pivot",pivot,"[pivot_ptr]"].join(""))
      ].join(""))
    } else {
      code.push(
          dataWrite(toPointer(mem_dest), dataRead(toPointer(pivot_dest))),
          dataWrite(toPointer(pivot_dest), "pivot"+pivot))
    }
  }
  
  storePivot("left", "(less-1)", 1)
  storePivot("right", "(great+1)", 2)

  //Recursive sort call
  function doSort(left, right) {
    code.push([
      "if((",right,"-",left,")<=",INSERTION_SORT_THRESHOLD,"){\n",
        "insertionSort(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
      "}else{\n",
        funcName, "(", left, ",", right, ",data,offset,", shapeArgs(order.length).join(","), ")\n",
      "}"
    ].join(""))
  }
  doSort("left", "(less-2)")
  doSort("(great+2)", "right")
  
  //If pivots are equal, then early out
  code.push("if(pivots_are_equal){")
    cleanUp()
    code.push("return")
  code.push("}")
  
  function walkPointer(ptr, pivot, body) {
    if(order.length > 1) {
      code.push(["__l",++labelCounter,":while(true){"].join(""))
      cacheLoop([ptr], true, [
        "if(", dataRead("ptr0"), "!==pivot", pivot, "[pivot_ptr]){break __l", labelCounter, "}"
      ].join(""))
      code.push(body, "}")
    } else {
      code.push(["while(", dataRead(toPointer(ptr)), "===pivot", pivot, "){", body, "}"].join(""))
    }
  }
  
  //Check bounds
  code.push("if(less<index1&&great>index5){")
  
    walkPointer("less", 1, "++less")
    walkPointer("great", 2, "--great")
  
    code.push("for(k=less;k<=great;++k){")
      comparePivot("comp_pivot1", "k", 1)
      code.push("if(comp_pivot1===0){")
        code.push("if(k!==less){")
          swapElements("k", "less")
        code.push("}")
        code.push("++less")
      code.push("}else{")
        comparePivot("comp_pivot2", "k", 2)
        code.push("if(comp_pivot2===0){")
          code.push("while(true){")
            comparePivot("comp", "great", 2)
            code.push("if(comp===0){")
              code.push("if(--great<k){break}")
              code.push("continue")
            code.push("}else{")
              comparePivot("comp", "great", 1)
              code.push("if(comp<0){")
                tripleSwap("k", "less", "great")
              code.push("}else{")
                swapAndDecrement("k", "great")
              code.push("}")
              code.push("break")
            code.push("}")
          code.push("}")
        code.push("}")
      code.push("}")
    code.push("}")
  code.push("}")
  
  //Clean up and do a final sorting pass
  cleanUp()
  doSort("less", "great")
 
  //Close off main loop
  code.push("}return " + funcName)
  
  //Compile and link
  if(order.length > 1 && allocator) {
    var compiled = new Function("insertionSort", "malloc", "free", code.join("\n"))
    return compiled(insertionSort, allocator[0], allocator[1])
  }
  var compiled = new Function("insertionSort", code.join("\n"))
  return compiled(insertionSort)
}

function compileSort(order, dtype) {
  var code = ["'use strict'"]
  var funcName = ["ndarraySortWrapper", order.join("d"), dtype].join("")
  var funcArgs = [ "array" ]
  
  code.push(["function ", funcName, "(", funcArgs.join(","), "){"].join(""))
  
  //Unpack local variables from array
  var vars = ["data=array.data,offset=array.offset|0,shape=array.shape,stride=array.stride"]
  for(var i=0; i<order.length; ++i) {
    vars.push(["s",i,"=stride[",i,"]|0,n",i,"=shape[",i,"]|0"].join(""))
  }
  
  var scratch_stride = new Array(order.length)
  var nprod = []
  for(var i=0; i<order.length; ++i) {
    var k = order[i]
    if(k === 0) {
      continue
    }
    if(nprod.length === 0) {
      scratch_stride[k] = "1"
    } else {
      scratch_stride[k] = nprod.join("*")
    }
    nprod.push("n"+k)
  }
  
  var p = -1, q = -1
  for(var i=0; i<order.length; ++i) {
    var j = order[i]
    if(j !== 0) {
      if(p > 0) {
        vars.push(["d",j,"=s",j,"-d",p,"*n",p].join(""))
      } else {
        vars.push(["d",j,"=s",j].join(""))
      }
      p = j
    }
    var k = order.length-1-i
    if(k !== 0) {
      if(q > 0) {
        vars.push(["e",k,"=s",k,"-e",q,"*n",q,
                  ",f",k,"=",scratch_stride[k],"-f",q,"*n",q].join(""))
      } else {
        vars.push(["e",k,"=s",k,",f",k,"=",scratch_stride[k]].join(""))
      }
      q = k
    }
  }
  
  //Declare local variables
  code.push("var " + vars.join(","))
  
  //Create arguments for subroutine
  var sortArgs = ["0", "n0-1", "data", "offset"].concat(shapeArgs(order.length))
  
  //Call main sorting routine
  code.push([
    "if(n0<=",INSERTION_SORT_THRESHOLD,"){",
      "insertionSort(", sortArgs.join(","), ")}else{",
      "quickSort(", sortArgs.join(","),
    ")}"
  ].join(""))
  
  //Return
  code.push("}return " + funcName)
  
  //Link everything together
  var result = new Function("insertionSort", "quickSort", code.join("\n"))
  var insertionSort = createInsertionSort(order, dtype)
  var quickSort = createQuickSort(order, dtype, insertionSort)
  return result(insertionSort, quickSort)
}

module.exports = compileSort
},{"typedarray-pool":992}],441:[function(require,module,exports){
"use strict"

var compile = require("./lib/compile_sort.js")
var CACHE = {}

function sort(array) {
  var order = array.order
  var dtype = array.dtype
  var typeSig = [order, dtype ]
  var typeName = typeSig.join(":")
  var compiled = CACHE[typeName]
  if(!compiled) {
    CACHE[typeName] = compiled = compile(order, dtype)
  }
  compiled(array)
  return array
}

module.exports = sort
},{"./lib/compile_sort.js":440}],442:[function(require,module,exports){
'use strict'

var interp  = require('ndarray-linear-interpolate')


var do_warp = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=new Array(_inline_3_arg4_)}","args":[{"name":"_inline_3_arg0_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_3_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_3_arg2_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_3_arg3_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_3_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_4_arg2_(this_warped,_inline_4_arg0_),_inline_4_arg3_.apply(void 0,this_warped)}","args":[{"name":"_inline_4_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_4_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_4_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_4_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_4_arg4_","lvalue":false,"rvalue":false,"count":0}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warpND","blockSize":64})

var do_warp_1 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_7_arg2_(this_warped,_inline_7_arg0_),_inline_7_arg3_(_inline_7_arg4_,this_warped[0])}","args":[{"name":"_inline_7_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_7_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_7_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_7_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_7_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp1D","blockSize":64})

var do_warp_2 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_10_arg2_(this_warped,_inline_10_arg0_),_inline_10_arg3_(_inline_10_arg4_,this_warped[0],this_warped[1])}","args":[{"name":"_inline_10_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_10_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_10_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp2D","blockSize":64})

var do_warp_3 = require('cwise/lib/wrapper')({"args":["index","array","scalar","scalar","scalar"],"pre":{"body":"{this_warped=[0,0,0]}","args":[],"thisVars":["this_warped"],"localVars":[]},"body":{"body":"{_inline_13_arg2_(this_warped,_inline_13_arg0_),_inline_13_arg3_(_inline_13_arg4_,this_warped[0],this_warped[1],this_warped[2])}","args":[{"name":"_inline_13_arg0_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg1_","lvalue":false,"rvalue":false,"count":0},{"name":"_inline_13_arg2_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg3_","lvalue":false,"rvalue":true,"count":1},{"name":"_inline_13_arg4_","lvalue":false,"rvalue":true,"count":1}],"thisVars":["this_warped"],"localVars":[]},"post":{"body":"{}","args":[],"thisVars":[],"localVars":[]},"debug":false,"funcName":"warp3D","blockSize":64})

module.exports = function warp(dest, src, func) {
  switch(src.shape.length) {
    case 1:
      do_warp_1(dest, func, interp.d1, src)
      break
    case 2:
      do_warp_2(dest, func, interp.d2, src)
      break
    case 3:
      do_warp_3(dest, func, interp.d3, src)
      break
    default:
      do_warp(dest, func, interp.bind(undefined, src), src.shape.length)
      break
  }
  return dest
}

},{"cwise/lib/wrapper":85,"ndarray-linear-interpolate":436}],443:[function(require,module,exports){
var iota = require("iota-array")
var isBuffer = require("is-buffer")

var hasTypedArrays  = ((typeof Float64Array) !== "undefined")

function compare1st(a, b) {
  return a[0] - b[0]
}

function order() {
  var stride = this.stride
  var terms = new Array(stride.length)
  var i
  for(i=0; i<terms.length; ++i) {
    terms[i] = [Math.abs(stride[i]), i]
  }
  terms.sort(compare1st)
  var result = new Array(terms.length)
  for(i=0; i<result.length; ++i) {
    result[i] = terms[i][1]
  }
  return result
}

function compileConstructor(dtype, dimension) {
  var className = ["View", dimension, "d", dtype].join("")
  if(dimension < 0) {
    className = "View_Nil" + dtype
  }
  var useGetters = (dtype === "generic")

  if(dimension === -1) {
    //Special case for trivial arrays
    var code =
      "function "+className+"(a){this.data=a;};\
var proto="+className+".prototype;\
proto.dtype='"+dtype+"';\
proto.index=function(){return -1};\
proto.size=0;\
proto.dimension=-1;\
proto.shape=proto.stride=proto.order=[];\
proto.lo=proto.hi=proto.transpose=proto.step=\
function(){return new "+className+"(this.data);};\
proto.get=proto.set=function(){};\
proto.pick=function(){return null};\
return function construct_"+className+"(a){return new "+className+"(a);}"
    var procedure = new Function(code)
    return procedure()
  } else if(dimension === 0) {
    //Special case for 0d arrays
    var code =
      "function "+className+"(a,d) {\
this.data = a;\
this.offset = d\
};\
var proto="+className+".prototype;\
proto.dtype='"+dtype+"';\
proto.index=function(){return this.offset};\
proto.dimension=0;\
proto.size=1;\
proto.shape=\
proto.stride=\
proto.order=[];\
proto.lo=\
proto.hi=\
proto.transpose=\
proto.step=function "+className+"_copy() {\
return new "+className+"(this.data,this.offset)\
};\
proto.pick=function "+className+"_pick(){\
return TrivialArray(this.data);\
};\
proto.valueOf=proto.get=function "+className+"_get(){\
return "+(useGetters ? "this.data.get(this.offset)" : "this.data[this.offset]")+
"};\
proto.set=function "+className+"_set(v){\
return "+(useGetters ? "this.data.set(this.offset,v)" : "this.data[this.offset]=v")+"\
};\
return function construct_"+className+"(a,b,c,d){return new "+className+"(a,d)}"
    var procedure = new Function("TrivialArray", code)
    return procedure(CACHED_CONSTRUCTORS[dtype][0])
  }

  var code = ["'use strict'"]

  //Create constructor for view
  var indices = iota(dimension)
  var args = indices.map(function(i) { return "i"+i })
  var index_str = "this.offset+" + indices.map(function(i) {
        return "this.stride[" + i + "]*i" + i
      }).join("+")
  var shapeArg = indices.map(function(i) {
      return "b"+i
    }).join(",")
  var strideArg = indices.map(function(i) {
      return "c"+i
    }).join(",")
  code.push(
    "function "+className+"(a," + shapeArg + "," + strideArg + ",d){this.data=a",
      "this.shape=[" + shapeArg + "]",
      "this.stride=[" + strideArg + "]",
      "this.offset=d|0}",
    "var proto="+className+".prototype",
    "proto.dtype='"+dtype+"'",
    "proto.dimension="+dimension)

  //view.size:
  code.push("Object.defineProperty(proto,'size',{get:function "+className+"_size(){\
return "+indices.map(function(i) { return "this.shape["+i+"]" }).join("*"),
"}})")

  //view.order:
  if(dimension === 1) {
    code.push("proto.order=[0]")
  } else {
    code.push("Object.defineProperty(proto,'order',{get:")
    if(dimension < 4) {
      code.push("function "+className+"_order(){")
      if(dimension === 2) {
        code.push("return (Math.abs(this.stride[0])>Math.abs(this.stride[1]))?[1,0]:[0,1]}})")
      } else if(dimension === 3) {
        code.push(
"var s0=Math.abs(this.stride[0]),s1=Math.abs(this.stride[1]),s2=Math.abs(this.stride[2]);\
if(s0>s1){\
if(s1>s2){\
return [2,1,0];\
}else if(s0>s2){\
return [1,2,0];\
}else{\
return [1,0,2];\
}\
}else if(s0>s2){\
return [2,0,1];\
}else if(s2>s1){\
return [0,1,2];\
}else{\
return [0,2,1];\
}}})")
      }
    } else {
      code.push("ORDER})")
    }
  }

  //view.set(i0, ..., v):
  code.push(
"proto.set=function "+className+"_set("+args.join(",")+",v){")
  if(useGetters) {
    code.push("return this.data.set("+index_str+",v)}")
  } else {
    code.push("return this.data["+index_str+"]=v}")
  }

  //view.get(i0, ...):
  code.push("proto.get=function "+className+"_get("+args.join(",")+"){")
  if(useGetters) {
    code.push("return this.data.get("+index_str+")}")
  } else {
    code.push("return this.data["+index_str+"]}")
  }

  //view.index:
  code.push(
    "proto.index=function "+className+"_index(", args.join(), "){return "+index_str+"}")

  //view.hi():
  code.push("proto.hi=function "+className+"_hi("+args.join(",")+"){return new "+className+"(this.data,"+
    indices.map(function(i) {
      return ["(typeof i",i,"!=='number'||i",i,"<0)?this.shape[", i, "]:i", i,"|0"].join("")
    }).join(",")+","+
    indices.map(function(i) {
      return "this.stride["+i + "]"
    }).join(",")+",this.offset)}")

  //view.lo():
  var a_vars = indices.map(function(i) { return "a"+i+"=this.shape["+i+"]" })
  var c_vars = indices.map(function(i) { return "c"+i+"=this.stride["+i+"]" })
  code.push("proto.lo=function "+className+"_lo("+args.join(",")+"){var b=this.offset,d=0,"+a_vars.join(",")+","+c_vars.join(","))
  for(var i=0; i<dimension; ++i) {
    code.push(
"if(typeof i"+i+"==='number'&&i"+i+">=0){\
d=i"+i+"|0;\
b+=c"+i+"*d;\
a"+i+"-=d}")
  }
  code.push("return new "+className+"(this.data,"+
    indices.map(function(i) {
      return "a"+i
    }).join(",")+","+
    indices.map(function(i) {
      return "c"+i
    }).join(",")+",b)}")

  //view.step():
  code.push("proto.step=function "+className+"_step("+args.join(",")+"){var "+
    indices.map(function(i) {
      return "a"+i+"=this.shape["+i+"]"
    }).join(",")+","+
    indices.map(function(i) {
      return "b"+i+"=this.stride["+i+"]"
    }).join(",")+",c=this.offset,d=0,ceil=Math.ceil")
  for(var i=0; i<dimension; ++i) {
    code.push(
"if(typeof i"+i+"==='number'){\
d=i"+i+"|0;\
if(d<0){\
c+=b"+i+"*(a"+i+"-1);\
a"+i+"=ceil(-a"+i+"/d)\
}else{\
a"+i+"=ceil(a"+i+"/d)\
}\
b"+i+"*=d\
}")
  }
  code.push("return new "+className+"(this.data,"+
    indices.map(function(i) {
      return "a" + i
    }).join(",")+","+
    indices.map(function(i) {
      return "b" + i
    }).join(",")+",c)}")

  //view.transpose():
  var tShape = new Array(dimension)
  var tStride = new Array(dimension)
  for(var i=0; i<dimension; ++i) {
    tShape[i] = "a[i"+i+"]"
    tStride[i] = "b[i"+i+"]"
  }
  code.push("proto.transpose=function "+className+"_transpose("+args+"){"+
    args.map(function(n,idx) { return n + "=(" + n + "===undefined?" + idx + ":" + n + "|0)"}).join(";"),
    "var a=this.shape,b=this.stride;return new "+className+"(this.data,"+tShape.join(",")+","+tStride.join(",")+",this.offset)}")

  //view.pick():
  code.push("proto.pick=function "+className+"_pick("+args+"){var a=[],b=[],c=this.offset")
  for(var i=0; i<dimension; ++i) {
    code.push("if(typeof i"+i+"==='number'&&i"+i+">=0){c=(c+this.stride["+i+"]*i"+i+")|0}else{a.push(this.shape["+i+"]);b.push(this.stride["+i+"])}")
  }
  code.push("var ctor=CTOR_LIST[a.length+1];return ctor(this.data,a,b,c)}")

  //Add return statement
  code.push("return function construct_"+className+"(data,shape,stride,offset){return new "+className+"(data,"+
    indices.map(function(i) {
      return "shape["+i+"]"
    }).join(",")+","+
    indices.map(function(i) {
      return "stride["+i+"]"
    }).join(",")+",offset)}")

  //Compile procedure
  var procedure = new Function("CTOR_LIST", "ORDER", code.join("\n"))
  return procedure(CACHED_CONSTRUCTORS[dtype], order)
}

function arrayDType(data) {
  if(isBuffer(data)) {
    return "buffer"
  }
  if(hasTypedArrays) {
    switch(Object.prototype.toString.call(data)) {
      case "[object Float64Array]":
        return "float64"
      case "[object Float32Array]":
        return "float32"
      case "[object Int8Array]":
        return "int8"
      case "[object Int16Array]":
        return "int16"
      case "[object Int32Array]":
        return "int32"
      case "[object Uint8Array]":
        return "uint8"
      case "[object Uint16Array]":
        return "uint16"
      case "[object Uint32Array]":
        return "uint32"
      case "[object Uint8ClampedArray]":
        return "uint8_clamped"
    }
  }
  if(Array.isArray(data)) {
    return "array"
  }
  return "generic"
}

var CACHED_CONSTRUCTORS = {
  "float32":[],
  "float64":[],
  "int8":[],
  "int16":[],
  "int32":[],
  "uint8":[],
  "uint16":[],
  "uint32":[],
  "array":[],
  "uint8_clamped":[],
  "buffer":[],
  "generic":[]
}

;(function() {
  for(var id in CACHED_CONSTRUCTORS) {
    CACHED_CONSTRUCTORS[id].push(compileConstructor(id, -1))
  }
});

function wrappedNDArrayCtor(data, shape, stride, offset) {
  if(data === undefined) {
    var ctor = CACHED_CONSTRUCTORS.array[0]
    return ctor([])
  } else if(typeof data === "number") {
    data = [data]
  }
  if(shape === undefined) {
    shape = [ data.length ]
  }
  var d = shape.length
  if(stride === undefined) {
    stride = new Array(d)
    for(var i=d-1, sz=1; i>=0; --i) {
      stride[i] = sz
      sz *= shape[i]
    }
  }
  if(offset === undefined) {
    offset = 0
    for(var i=0; i<d; ++i) {
      if(stride[i] < 0) {
        offset -= (shape[i]-1)*stride[i]
      }
    }
  }
  var dtype = arrayDType(data)
  var ctor_list = CACHED_CONSTRUCTORS[dtype]
  while(ctor_list.length <= d+1) {
    ctor_list.push(compileConstructor(dtype, ctor_list.length-1))
  }
  var ctor = ctor_list[d+1]
  return ctor(data, shape, stride, offset)
}

module.exports = wrappedNDArrayCtor

},{"iota-array":269,"is-buffer":270}],444:[function(require,module,exports){
"use strict"

var doubleBits = require("double-bits")

var SMALLEST_DENORM = Math.pow(2, -1074)
var UINT_MAX = (-1)>>>0

module.exports = nextafter

function nextafter(x, y) {
  if(isNaN(x) || isNaN(y)) {
    return NaN
  }
  if(x === y) {
    return x
  }
  if(x === 0) {
    if(y < 0) {
      return -SMALLEST_DENORM
    } else {
      return SMALLEST_DENORM
    }
  }
  var hi = doubleBits.hi(x)
  var lo = doubleBits.lo(x)
  if((y > x) === (x > 0)) {
    if(lo === UINT_MAX) {
      hi += 1
      lo = 0
    } else {
      lo += 1
    }
  } else {
    if(lo === 0) {
      lo = UINT_MAX
      hi -= 1
    } else {
      lo -= 1
    }
  }
  return doubleBits.pack(lo, hi)
}
},{"double-bits":89}],445:[function(require,module,exports){
var DEFAULT_NORMALS_EPSILON = 1e-6;
var DEFAULT_FACE_EPSILON = 1e-6;

//Estimate the vertex normals of a mesh
exports.vertexNormals = function(faces, positions, specifiedEpsilon) {

  var N         = positions.length;
  var normals   = new Array(N);
  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_NORMALS_EPSILON : specifiedEpsilon;

  //Initialize normal array
  for(var i=0; i<N; ++i) {
    normals[i] = [0.0, 0.0, 0.0];
  }

  //Walk over all the faces and add per-vertex contribution to normal weights
  for(var i=0; i<faces.length; ++i) {
    var f = faces[i];
    var p = 0;
    var c = f[f.length-1];
    var n = f[0];
    for(var j=0; j<f.length; ++j) {

      //Shift indices back
      p = c;
      c = n;
      n = f[(j+1) % f.length];

      var v0 = positions[p];
      var v1 = positions[c];
      var v2 = positions[n];

      //Compute infineteismal arcs
      var d01 = new Array(3);
      var m01 = 0.0;
      var d21 = new Array(3);
      var m21 = 0.0;
      for(var k=0; k<3; ++k) {
        d01[k] = v0[k]  - v1[k];
        m01   += d01[k] * d01[k];
        d21[k] = v2[k]  - v1[k];
        m21   += d21[k] * d21[k];
      }

      //Accumulate values in normal
      if(m01 * m21 > epsilon) {
        var norm = normals[c];
        var w = 1.0 / Math.sqrt(m01 * m21);
        for(var k=0; k<3; ++k) {
          var u = (k+1)%3;
          var v = (k+2)%3;
          norm[k] += w * (d21[u] * d01[v] - d21[v] * d01[u]);
        }
      }
    }
  }

  //Scale all normals to unit length
  for(var i=0; i<N; ++i) {
    var norm = normals[i];
    var m = 0.0;
    for(var k=0; k<3; ++k) {
      m += norm[k] * norm[k];
    }
    if(m > epsilon) {
      var w = 1.0 / Math.sqrt(m);
      for(var k=0; k<3; ++k) {
        norm[k] *= w;
      }
    } else {
      for(var k=0; k<3; ++k) {
        norm[k] = 0.0;
      }
    }
  }

  //Return the resulting set of patches
  return normals;
}

//Compute face normals of a mesh
exports.faceNormals = function(faces, positions, specifiedEpsilon) {

  var N         = faces.length;
  var normals   = new Array(N);
  var epsilon   = specifiedEpsilon === void(0) ? DEFAULT_FACE_EPSILON : specifiedEpsilon;

  for(var i=0; i<N; ++i) {
    var f = faces[i];
    var pos = new Array(3);
    for(var j=0; j<3; ++j) {
      pos[j] = positions[f[j]];
    }

    var d01 = new Array(3);
    var d21 = new Array(3);
    for(var j=0; j<3; ++j) {
      d01[j] = pos[1][j] - pos[0][j];
      d21[j] = pos[2][j] - pos[0][j];
    }

    var n = new Array(3);
    var l = 0.0;
    for(var j=0; j<3; ++j) {
      var u = (j+1)%3;
      var v = (j+2)%3;
      n[j] = d01[u] * d21[v] - d01[v] * d21[u];
      l += n[j] * n[j];
    }
    if(l > epsilon) {
      l = 1.0 / Math.sqrt(l);
    } else {
      l = 0.0;
    }
    for(var j=0; j<3; ++j) {
      n[j] *= l;
    }
    normals[i] = n;
  }
  return normals;
}



},{}],446:[function(require,module,exports){
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/

'use strict';
/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

module.exports = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

},{}],447:[function(require,module,exports){
// (c) Dean McNamee <dean@gmail.com>, 2013.
//
// https://github.com/deanm/omggif
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
// omggif is a JavaScript implementation of a GIF 89a encoder and decoder,
// including animation and compression.  It does not rely on any specific
// underlying system, so should run in the browser, Node, or Plask.

function GifWriter(buf, width, height, gopts) {
  var p = 0;

  var gopts = gopts === undefined ? { } : gopts;
  var loop_count = gopts.loop === undefined ? null : gopts.loop;
  var global_palette = gopts.palette === undefined ? null : gopts.palette;

  if (width <= 0 || height <= 0 || width > 65535 || height > 65535)
    throw "Width/Height invalid."

  function check_palette_and_num_colors(palette) {
    var num_colors = palette.length;
    if (num_colors < 2 || num_colors > 256 ||  num_colors & (num_colors-1))
      throw "Invalid code/color length, must be power of 2 and 2 .. 256.";
    return num_colors;
  }

  // - Header.
  buf[p++] = 0x47; buf[p++] = 0x49; buf[p++] = 0x46;  // GIF
  buf[p++] = 0x38; buf[p++] = 0x39; buf[p++] = 0x61;  // 89a

  // Handling of Global Color Table (palette) and background index.
  var gp_num_colors_pow2 = 0;
  var background = 0;
  if (global_palette !== null) {
    var gp_num_colors = check_palette_and_num_colors(global_palette);
    while (gp_num_colors >>= 1) ++gp_num_colors_pow2;
    gp_num_colors = 1 << gp_num_colors_pow2;
    --gp_num_colors_pow2;
    if (gopts.background !== undefined) {
      background = gopts.background;
      if (background >= gp_num_colors) throw "Background index out of range.";
      // The GIF spec states that a background index of 0 should be ignored, so
      // this is probably a mistake and you really want to set it to another
      // slot in the palette.  But actually in the end most browsers, etc end
      // up ignoring this almost completely (including for dispose background).
      if (background === 0)
        throw "Background index explicitly passed as 0.";
    }
  }

  // - Logical Screen Descriptor.
  // NOTE(deanm): w/h apparently ignored by implementations, but set anyway.
  buf[p++] = width & 0xff; buf[p++] = width >> 8 & 0xff;
  buf[p++] = height & 0xff; buf[p++] = height >> 8 & 0xff;
  // NOTE: Indicates 0-bpp original color resolution (unused?).
  buf[p++] = (global_palette !== null ? 0x80 : 0) |  // Global Color Table Flag.
             gp_num_colors_pow2;  // NOTE: No sort flag (unused?).
  buf[p++] = background;  // Background Color Index.
  buf[p++] = 0;  // Pixel aspect ratio (unused?).

  // - Global Color Table
  if (global_palette !== null) {
    for (var i = 0, il = global_palette.length; i < il; ++i) {
      var rgb = global_palette[i];
      buf[p++] = rgb >> 16 & 0xff;
      buf[p++] = rgb >> 8 & 0xff;
      buf[p++] = rgb & 0xff;
    }
  }

  if (loop_count !== null) {  // Netscape block for looping.
    if (loop_count < 0 || loop_count > 65535)
      throw "Loop count invalid."
    // Extension code, label, and length.
    buf[p++] = 0x21; buf[p++] = 0xff; buf[p++] = 0x0b;
    // NETSCAPE2.0
    buf[p++] = 0x4e; buf[p++] = 0x45; buf[p++] = 0x54; buf[p++] = 0x53;
    buf[p++] = 0x43; buf[p++] = 0x41; buf[p++] = 0x50; buf[p++] = 0x45;
    buf[p++] = 0x32; buf[p++] = 0x2e; buf[p++] = 0x30;
    // Sub-block
    buf[p++] = 0x03; buf[p++] = 0x01;
    buf[p++] = loop_count & 0xff; buf[p++] = loop_count >> 8 & 0xff;
    buf[p++] = 0x00;  // Terminator.
  }


  var ended = false;

  this.addFrame = function(x, y, w, h, indexed_pixels, opts) {
    if (ended === true) { --p; ended = false; }  // Un-end.

    opts = opts === undefined ? { } : opts;

    // TODO(deanm): Bounds check x, y.  Do they need to be within the virtual
    // canvas width/height, I imagine?
    if (x < 0 || y < 0 || x > 65535 || y > 65535)
      throw "x/y invalid."

    if (w <= 0 || h <= 0 || w > 65535 || h > 65535)
      throw "Width/Height invalid."

    if (indexed_pixels.length < w * h)
      throw "Not enough pixels for the frame size.";

    var using_local_palette = true;
    var palette = opts.palette;
    if (palette === undefined || palette === null) {
      using_local_palette = false;
      palette = global_palette;
    }

    if (palette === undefined || palette === null)
      throw "Must supply either a local or global palette.";

    var num_colors = check_palette_and_num_colors(palette);

    // Compute the min_code_size (power of 2), destroying num_colors.
    var min_code_size = 0;
    while (num_colors >>= 1) ++min_code_size;
    num_colors = 1 << min_code_size;  // Now we can easily get it back.

    var delay = opts.delay === undefined ? 0 : opts.delay;

    // From the spec:
    //     0 -   No disposal specified. The decoder is
    //           not required to take any action.
    //     1 -   Do not dispose. The graphic is to be left
    //           in place.
    //     2 -   Restore to background color. The area used by the
    //           graphic must be restored to the background color.
    //     3 -   Restore to previous. The decoder is required to
    //           restore the area overwritten by the graphic with
    //           what was there prior to rendering the graphic.
    //  4-7 -    To be defined.
    // NOTE(deanm): Dispose background doesn't really work, apparently most
    // browsers ignore the background palette index and clear to transparency.
    var disposal = opts.disposal === undefined ? 0 : opts.disposal;
    if (disposal < 0 || disposal > 3)  // 4-7 is reserved.
      throw "Disposal out of range.";

    var use_transparency = false;
    var transparent_index = 0;
    if (opts.transparent !== undefined && opts.transparent !== null) {
      use_transparency = true;
      transparent_index = opts.transparent;
      if (transparent_index < 0 || transparent_index >= num_colors)
        throw "Transparent color index.";
    }

    if (disposal !== 0 || use_transparency || delay !== 0) {
      // - Graphics Control Extension
      buf[p++] = 0x21; buf[p++] = 0xf9;  // Extension / Label.
      buf[p++] = 4;  // Byte size.

      buf[p++] = disposal << 2 | (use_transparency === true ? 1 : 0);
      buf[p++] = delay & 0xff; buf[p++] = delay >> 8 & 0xff;
      buf[p++] = transparent_index;  // Transparent color index.
      buf[p++] = 0;  // Block Terminator.
    }

    // - Image Descriptor
    buf[p++] = 0x2c;  // Image Seperator.
    buf[p++] = x & 0xff; buf[p++] = x >> 8 & 0xff;  // Left.
    buf[p++] = y & 0xff; buf[p++] = y >> 8 & 0xff;  // Top.
    buf[p++] = w & 0xff; buf[p++] = w >> 8 & 0xff;
    buf[p++] = h & 0xff; buf[p++] = h >> 8 & 0xff;
    // NOTE: No sort flag (unused?).
    // TODO(deanm): Support interlace.
    buf[p++] = using_local_palette === true ? (0x80 | (min_code_size-1)) : 0;

    // - Local Color Table
    if (using_local_palette === true) {
      for (var i = 0, il = palette.length; i < il; ++i) {
        var rgb = palette[i];
        buf[p++] = rgb >> 16 & 0xff;
        buf[p++] = rgb >> 8 & 0xff;
        buf[p++] = rgb & 0xff;
      }
    }

    p = GifWriterOutputLZWCodeStream(
            buf, p, min_code_size < 2 ? 2 : min_code_size, indexed_pixels);
  };

  this.end = function() {
    if (ended === false) {
      buf[p++] = 0x3b;  // Trailer.
      ended = true;
    }
    return p;
  };
}

// Main compression routine, palette indexes -> LZW code stream.
// |index_stream| must have at least one entry.
function GifWriterOutputLZWCodeStream(buf, p, min_code_size, index_stream) {
  buf[p++] = min_code_size;
  var cur_subblock = p++;  // Pointing at the length field.

  var clear_code = 1 << min_code_size;
  var code_mask = clear_code - 1;
  var eoi_code = clear_code + 1;
  var next_code = eoi_code + 1;

  var cur_code_size = min_code_size + 1;  // Number of bits per code.
  var cur_shift = 0;
  // We have at most 12-bit codes, so we should have to hold a max of 19
  // bits here (and then we would write out).
  var cur = 0;

  function emit_bytes_to_buffer(bit_block_size) {
    while (cur_shift >= bit_block_size) {
      buf[p++] = cur & 0xff;
      cur >>= 8; cur_shift -= 8;
      if (p === cur_subblock + 256) {  // Finished a subblock.
        buf[cur_subblock] = 255;
        cur_subblock = p++;
      }
    }
  }

  function emit_code(c) {
    cur |= c << cur_shift;
    cur_shift += cur_code_size;
    emit_bytes_to_buffer(8);
  }

  // I am not an expert on the topic, and I don't want to write a thesis.
  // However, it is good to outline here the basic algorithm and the few data
  // structures and optimizations here that make this implementation fast.
  // The basic idea behind LZW is to build a table of previously seen runs
  // addressed by a short id (herein called output code).  All data is
  // referenced by a code, which represents one or more values from the
  // original input stream.  All input bytes can be referenced as the same
  // value as an output code.  So if you didn't want any compression, you
  // could more or less just output the original bytes as codes (there are
  // some details to this, but it is the idea).  In order to achieve
  // compression, values greater then the input range (codes can be up to
  // 12-bit while input only 8-bit) represent a sequence of previously seen
  // inputs.  The decompressor is able to build the same mapping while
  // decoding, so there is always a shared common knowledge between the
  // encoding and decoder, which is also important for "timing" aspects like
  // how to handle variable bit width code encoding.
  //
  // One obvious but very important consequence of the table system is there
  // is always a unique id (at most 12-bits) to map the runs.  'A' might be
  // 4, then 'AA' might be 10, 'AAA' 11, 'AAAA' 12, etc.  This relationship
  // can be used for an effecient lookup strategy for the code mapping.  We
  // need to know if a run has been seen before, and be able to map that run
  // to the output code.  Since we start with known unique ids (input bytes),
  // and then from those build more unique ids (table entries), we can
  // continue this chain (almost like a linked list) to always have small
  // integer values that represent the current byte chains in the encoder.
  // This means instead of tracking the input bytes (AAAABCD) to know our
  // current state, we can track the table entry for AAAABC (it is guaranteed
  // to exist by the nature of the algorithm) and the next character D.
  // Therefor the tuple of (table_entry, byte) is guaranteed to also be
  // unique.  This allows us to create a simple lookup key for mapping input
  // sequences to codes (table indices) without having to store or search
  // any of the code sequences.  So if 'AAAA' has a table entry of 12, the
  // tuple of ('AAAA', K) for any input byte K will be unique, and can be our
  // key.  This leads to a integer value at most 20-bits, which can always
  // fit in an SMI value and be used as a fast sparse array / object key.

  // Output code for the current contents of the index buffer.
  var ib_code = index_stream[0] & code_mask;  // Load first input index.
  var code_table = { };  // Key'd on our 20-bit "tuple".

  emit_code(clear_code);  // Spec says first code should be a clear code.

  // First index already loaded, process the rest of the stream.
  for (var i = 1, il = index_stream.length; i < il; ++i) {
    var k = index_stream[i] & code_mask;
    var cur_key = ib_code << 8 | k;  // (prev, k) unique tuple.
    var cur_code = code_table[cur_key];  // buffer + k.

    // Check if we have to create a new code table entry.
    if (cur_code === undefined) {  // We don't have buffer + k.
      // Emit index buffer (without k).
      // This is an inline version of emit_code, because this is the core
      // writing routine of the compressor (and V8 cannot inline emit_code
      // because it is a closure here in a different context).  Additionally
      // we can call emit_byte_to_buffer less often, because we can have
      // 30-bits (from our 31-bit signed SMI), and we know our codes will only
      // be 12-bits, so can safely have 18-bits there without overflow.
      // emit_code(ib_code);
      cur |= ib_code << cur_shift;
      cur_shift += cur_code_size;
      while (cur_shift >= 8) {
        buf[p++] = cur & 0xff;
        cur >>= 8; cur_shift -= 8;
        if (p === cur_subblock + 256) {  // Finished a subblock.
          buf[cur_subblock] = 255;
          cur_subblock = p++;
        }
      }

      if (next_code === 4096) {  // Table full, need a clear.
        emit_code(clear_code);
        next_code = eoi_code + 1;
        cur_code_size = min_code_size + 1;
        code_table = { };
      } else {  // Table not full, insert a new entry.
        // Increase our variable bit code sizes if necessary.  This is a bit
        // tricky as it is based on "timing" between the encoding and
        // decoder.  From the encoders perspective this should happen after
        // we've already emitted the index buffer and are about to create the
        // first table entry that would overflow our current code bit size.
        if (next_code >= (1 << cur_code_size)) ++cur_code_size;
        code_table[cur_key] = next_code++;  // Insert into code table.
      }

      ib_code = k;  // Index buffer to single input k.
    } else {
      ib_code = cur_code;  // Index buffer to sequence in code table.
    }
  }

  emit_code(ib_code);  // There will still be something in the index buffer.
  emit_code(eoi_code);  // End Of Information.

  // Flush / finalize the sub-blocks stream to the buffer.
  emit_bytes_to_buffer(1);

  // Finish the sub-blocks, writing out any unfinished lengths and
  // terminating with a sub-block of length 0.  If we have already started
  // but not yet used a sub-block it can just become the terminator.
  if (cur_subblock + 1 === p) {  // Started but unused.
    buf[cur_subblock] = 0;
  } else {  // Started and used, write length and additional terminator block.
    buf[cur_subblock] = p - cur_subblock - 1;
    buf[p++] = 0;
  }
  return p;
}

function GifReader(buf) {
  var p = 0;

  // - Header (GIF87a or GIF89a).
  if (buf[p++] !== 0x47 ||            buf[p++] !== 0x49 || buf[p++] !== 0x46 ||
      buf[p++] !== 0x38 || (buf[p++]+1 & 0xfd) !== 0x38 || buf[p++] !== 0x61) {
    throw "Invalid GIF 87a/89a header.";
  }

  // - Logical Screen Descriptor.
  var width = buf[p++] | buf[p++] << 8;
  var height = buf[p++] | buf[p++] << 8;
  var pf0 = buf[p++];  // <Packed Fields>.
  var global_palette_flag = pf0 >> 7;
  var num_global_colors_pow2 = pf0 & 0x7;
  var num_global_colors = 1 << (num_global_colors_pow2 + 1);
  var background = buf[p++];
  buf[p++];  // Pixel aspect ratio (unused?).

  var global_palette_offset = null;

  if (global_palette_flag) {
    global_palette_offset = p;
    p += num_global_colors * 3;  // Seek past palette.
  }

  var no_eof = true;

  var frames = [ ];

  var delay = 0;
  var transparent_index = null;
  var disposal = 0;  // 0 - No disposal specified.
  var loop_count = null;

  this.width = width;
  this.height = height;

  while (no_eof && p < buf.length) {
    switch (buf[p++]) {
      case 0x21:  // Graphics Control Extension Block
        switch (buf[p++]) {
          case 0xff:  // Application specific block
            // Try if it's a Netscape block (with animation loop counter).
            if (buf[p   ] !== 0x0b ||  // 21 FF already read, check block size.
                // NETSCAPE2.0
                buf[p+1 ] == 0x4e && buf[p+2 ] == 0x45 && buf[p+3 ] == 0x54 &&
                buf[p+4 ] == 0x53 && buf[p+5 ] == 0x43 && buf[p+6 ] == 0x41 &&
                buf[p+7 ] == 0x50 && buf[p+8 ] == 0x45 && buf[p+9 ] == 0x32 &&
                buf[p+10] == 0x2e && buf[p+11] == 0x30 &&
                // Sub-block
                buf[p+12] == 0x03 && buf[p+13] == 0x01 && buf[p+16] == 0) {
              p += 14;
              loop_count = buf[p++] | buf[p++] << 8;
              p++;  // Skip terminator.
            } else {  // We don't know what it is, just try to get past it.
              p += 12;
              while (true) {  // Seek through subblocks.
                var block_size = buf[p++];
                if (block_size === 0) break;
                p += block_size;
              }
            }
            break;

          case 0xf9:  // Graphics Control Extension
            if (buf[p++] !== 0x4 || buf[p+4] !== 0)
              throw "Invalid graphics extension block.";
            var pf1 = buf[p++];
            delay = buf[p++] | buf[p++] << 8;
            transparent_index = buf[p++];
            if ((pf1 & 1) === 0) transparent_index = null;
            disposal = pf1 >> 2 & 0x7;
            p++;  // Skip terminator.
            break;

          case 0xfe:  // Comment Extension.
            while (true) {  // Seek through subblocks.
              var block_size = buf[p++];
              if (block_size === 0) break;
              // console.log(buf.slice(p, p+block_size).toString('ascii'));
              p += block_size;
            }
            break;

          default:
            throw "Unknown graphic control label: 0x" + buf[p-1].toString(16);
        }
        break;

      case 0x2c:  // Image Descriptor.
        var x = buf[p++] | buf[p++] << 8;
        var y = buf[p++] | buf[p++] << 8;
        var w = buf[p++] | buf[p++] << 8;
        var h = buf[p++] | buf[p++] << 8;
        var pf2 = buf[p++];
        var local_palette_flag = pf2 >> 7;
        var interlace_flag = pf2 >> 6 & 1;
        var num_local_colors_pow2 = pf2 & 0x7;
        var num_local_colors = 1 << (num_local_colors_pow2 + 1);
        var palette_offset = global_palette_offset;
        var has_local_palette = false;
        if (local_palette_flag) {
          var has_local_palette = true;
          palette_offset = p;  // Override with local palette.
          p += num_local_colors * 3;  // Seek past palette.
        }

        var data_offset = p;

        p++;  // codesize
        while (true) {
          var block_size = buf[p++];
          if (block_size === 0) break;
          p += block_size;
        }

        frames.push({x: x, y: y, width: w, height: h,
                     has_local_palette: has_local_palette,
                     palette_offset: palette_offset,
                     data_offset: data_offset,
                     data_length: p - data_offset,
                     transparent_index: transparent_index,
                     interlaced: !!interlace_flag,
                     delay: delay,
                     disposal: disposal});
        break;

      case 0x3b:  // Trailer Marker (end of file).
        no_eof = false;
        break;

      default:
        throw "Unknown gif block: 0x" + buf[p-1].toString(16);
        break;
    }
  }

  this.numFrames = function() {
    return frames.length;
  };

  this.loopCount = function() {
    return loop_count;
  };

  this.frameInfo = function(frame_num) {
    if (frame_num < 0 || frame_num >= frames.length)
      throw "Frame index out of range.";
    return frames[frame_num];
  }

  this.decodeAndBlitFrameBGRA = function(frame_num, pixels) {
    var frame = this.frameInfo(frame_num);
    var num_pixels = frame.width * frame.height;
    var index_stream = new Uint8Array(num_pixels);  // At most 8-bit indices.
    GifReaderLZWOutputIndexStream(
        buf, frame.data_offset, index_stream, num_pixels);
    var palette_offset = frame.palette_offset;

    // NOTE(deanm): It seems to be much faster to compare index to 256 than
    // to === null.  Not sure why, but CompareStub_EQ_STRICT shows up high in
    // the profile, not sure if it's related to using a Uint8Array.
    var trans = frame.transparent_index;
    if (trans === null) trans = 256;

    // We are possibly just blitting to a portion of the entire frame.
    // That is a subrect within the framerect, so the additional pixels
    // must be skipped over after we finished a scanline.
    var framewidth  = frame.width;
    var framestride = width - framewidth;
    var xleft       = framewidth;  // Number of subrect pixels left in scanline.

    // Output indicies of the top left and bottom right corners of the subrect.
    var opbeg = ((frame.y * width) + frame.x) * 4;
    var opend = ((frame.y + frame.height) * width + frame.x) * 4;
    var op    = opbeg;

    var scanstride = framestride * 4;

    // Use scanstride to skip past the rows when interlacing.  This is skipping
    // 7 rows for the first two passes, then 3 then 1.
    if (frame.interlaced === true) {
      scanstride += width * 4 * 7;  // Pass 1.
    }

    var interlaceskip = 8;  // Tracking the row interval in the current pass.

    for (var i = 0, il = index_stream.length; i < il; ++i) {
      var index = index_stream[i];

      if (xleft === 0) {  // Beginning of new scan line
        op += scanstride;
        xleft = framewidth;
        if (op >= opend) { // Catch the wrap to switch passes when interlacing.
          scanstride = framestride * 4 + width * 4 * (interlaceskip-1);
          // interlaceskip / 2 * 4 is interlaceskip << 1.
          op = opbeg + (framewidth + framestride) * (interlaceskip << 1);
          interlaceskip >>= 1;
        }
      }

      if (index === trans) {
        op += 4;
      } else {
        var r = buf[palette_offset + index * 3];
        var g = buf[palette_offset + index * 3 + 1];
        var b = buf[palette_offset + index * 3 + 2];
        pixels[op++] = b;
        pixels[op++] = g;
        pixels[op++] = r;
        pixels[op++] = 255;
      }
      --xleft;
    }
  };

  // I will go to copy and paste hell one day...
  this.decodeAndBlitFrameRGBA = function(frame_num, pixels) {
    var frame = this.frameInfo(frame_num);
    var num_pixels = frame.width * frame.height;
    var index_stream = new Uint8Array(num_pixels);  // At most 8-bit indices.
    GifReaderLZWOutputIndexStream(
        buf, frame.data_offset, index_stream, num_pixels);
    var palette_offset = frame.palette_offset;

    // NOTE(deanm): It seems to be much faster to compare index to 256 than
    // to === null.  Not sure why, but CompareStub_EQ_STRICT shows up high in
    // the profile, not sure if it's related to using a Uint8Array.
    var trans = frame.transparent_index;
    if (trans === null) trans = 256;

    // We are possibly just blitting to a portion of the entire frame.
    // That is a subrect within the framerect, so the additional pixels
    // must be skipped over after we finished a scanline.
    var framewidth  = frame.width;
    var framestride = width - framewidth;
    var xleft       = framewidth;  // Number of subrect pixels left in scanline.

    // Output indicies of the top left and bottom right corners of the subrect.
    var opbeg = ((frame.y * width) + frame.x) * 4;
    var opend = ((frame.y + frame.height) * width + frame.x) * 4;
    var op    = opbeg;

    var scanstride = framestride * 4;

    // Use scanstride to skip past the rows when interlacing.  This is skipping
    // 7 rows for the first two passes, then 3 then 1.
    if (frame.interlaced === true) {
      scanstride += width * 4 * 7;  // Pass 1.
    }

    var interlaceskip = 8;  // Tracking the row interval in the current pass.

    for (var i = 0, il = index_stream.length; i < il; ++i) {
      var index = index_stream[i];

      if (xleft === 0) {  // Beginning of new scan line
        op += scanstride;
        xleft = framewidth;
        if (op >= opend) { // Catch the wrap to switch passes when interlacing.
          scanstride = framestride * 4 + width * 4 * (interlaceskip-1);
          // interlaceskip / 2 * 4 is interlaceskip << 1.
          op = opbeg + (framewidth + framestride) * (interlaceskip << 1);
          interlaceskip >>= 1;
        }
      }

      if (index === trans) {
        op += 4;
      } else {
        var r = buf[palette_offset + index * 3];
        var g = buf[palette_offset + index * 3 + 1];
        var b = buf[palette_offset + index * 3 + 2];
        pixels[op++] = r;
        pixels[op++] = g;
        pixels[op++] = b;
        pixels[op++] = 255;
      }
      --xleft;
    }
  };
}

function GifReaderLZWOutputIndexStream(code_stream, p, output, output_length) {
  var min_code_size = code_stream[p++];

  var clear_code = 1 << min_code_size;
  var eoi_code = clear_code + 1;
  var next_code = eoi_code + 1;

  var cur_code_size = min_code_size + 1;  // Number of bits per code.
  // NOTE: This shares the same name as the encoder, but has a different
  // meaning here.  Here this masks each code coming from the code stream.
  var code_mask = (1 << cur_code_size) - 1;
  var cur_shift = 0;
  var cur = 0;

  var op = 0;  // Output pointer.
  
  var subblock_size = code_stream[p++];

  // TODO(deanm): Would using a TypedArray be any faster?  At least it would
  // solve the fast mode / backing store uncertainty.
  // var code_table = Array(4096);
  var code_table = new Int32Array(4096);  // Can be signed, we only use 20 bits.

  var prev_code = null;  // Track code-1.

  while (true) {
    // Read up to two bytes, making sure we always 12-bits for max sized code.
    while (cur_shift < 16) {
      if (subblock_size === 0) break;  // No more data to be read.

      cur |= code_stream[p++] << cur_shift;
      cur_shift += 8;

      if (subblock_size === 1) {  // Never let it get to 0 to hold logic above.
        subblock_size = code_stream[p++];  // Next subblock.
      } else {
        --subblock_size;
      }
    }

    // TODO(deanm): We should never really get here, we should have received
    // and EOI.
    if (cur_shift < cur_code_size)
      break;

    var code = cur & code_mask;
    cur >>= cur_code_size;
    cur_shift -= cur_code_size;

    // TODO(deanm): Maybe should check that the first code was a clear code,
    // at least this is what you're supposed to do.  But actually our encoder
    // now doesn't emit a clear code first anyway.
    if (code === clear_code) {
      // We don't actually have to clear the table.  This could be a good idea
      // for greater error checking, but we don't really do any anyway.  We
      // will just track it with next_code and overwrite old entries.

      next_code = eoi_code + 1;
      cur_code_size = min_code_size + 1;
      code_mask = (1 << cur_code_size) - 1;

      // Don't update prev_code ?
      prev_code = null;
      continue;
    } else if (code === eoi_code) {
      break;
    }

    // We have a similar situation as the decoder, where we want to store
    // variable length entries (code table entries), but we want to do in a
    // faster manner than an array of arrays.  The code below stores sort of a
    // linked list within the code table, and then "chases" through it to
    // construct the dictionary entries.  When a new entry is created, just the
    // last byte is stored, and the rest (prefix) of the entry is only
    // referenced by its table entry.  Then the code chases through the
    // prefixes until it reaches a single byte code.  We have to chase twice,
    // first to compute the length, and then to actually copy the data to the
    // output (backwards, since we know the length).  The alternative would be
    // storing something in an intermediate stack, but that doesn't make any
    // more sense.  I implemented an approach where it also stored the length
    // in the code table, although it's a bit tricky because you run out of
    // bits (12 + 12 + 8), but I didn't measure much improvements (the table
    // entries are generally not the long).  Even when I created benchmarks for
    // very long table entries the complexity did not seem worth it.
    // The code table stores the prefix entry in 12 bits and then the suffix
    // byte in 8 bits, so each entry is 20 bits.

    var chase_code = code < next_code ? code : prev_code;

    // Chase what we will output, either {CODE} or {CODE-1}.
    var chase_length = 0;
    var chase = chase_code;
    while (chase > clear_code) {
      chase = code_table[chase] >> 8;
      ++chase_length;
    }

    var k = chase;
    
    var op_end = op + chase_length + (chase_code !== code ? 1 : 0);
    if (op_end > output_length) {
      console.log("Warning, gif stream longer than expected.");
      return;
    }

    // Already have the first byte from the chase, might as well write it fast.
    output[op++] = k;

    op += chase_length;
    var b = op;  // Track pointer, writing backwards.

    if (chase_code !== code)  // The case of emitting {CODE-1} + k.
      output[op++] = k;

    chase = chase_code;
    while (chase_length--) {
      chase = code_table[chase];
      output[--b] = chase & 0xff;  // Write backwards.
      chase >>= 8;  // Pull down to the prefix code.
    }

    if (prev_code !== null && next_code < 4096) {
      code_table[next_code++] = prev_code << 8 | k;
      // TODO(deanm): Figure out this clearing vs code growth logic better.  I
      // have an feeling that it should just happen somewhere else, for now it
      // is awkward between when we grow past the max and then hit a clear code.
      // For now just check if we hit the max 12-bits (then a clear code should
      // follow, also of course encoded in 12-bits).
      if (next_code >= code_mask+1 && cur_code_size < 12) {
        ++cur_code_size;
        code_mask = code_mask << 1 | 1;
      }
    }

    prev_code = code;
  }

  if (op !== output_length) {
    console.log("Warning, gif stream shorter than expected.");
  }

  return output;
}

try { exports.GifWriter = GifWriter; exports.GifReader = GifReader } catch(e) { }  // CommonJS.

},{}],448:[function(require,module,exports){
'use strict'

module.exports = quatFromFrame

function quatFromFrame(
  out,
  rx, ry, rz,
  ux, uy, uz,
  fx, fy, fz) {
  var tr = rx + uy + fz
  if(l > 0) {
    var l = Math.sqrt(tr + 1.0)
    out[0] = 0.5 * (uz - fy) / l
    out[1] = 0.5 * (fx - rz) / l
    out[2] = 0.5 * (ry - uy) / l
    out[3] = 0.5 * l
  } else {
    var tf = Math.max(rx, uy, fz)
    var l = Math.sqrt(2 * tf - tr + 1.0)
    if(rx >= tf) {
      //x y z  order
      out[0] = 0.5 * l
      out[1] = 0.5 * (ux + ry) / l
      out[2] = 0.5 * (fx + rz) / l
      out[3] = 0.5 * (uz - fy) / l
    } else if(uy >= tf) {
      //y z x  order
      out[0] = 0.5 * (ry + ux) / l
      out[1] = 0.5 * l
      out[2] = 0.5 * (fy + uz) / l
      out[3] = 0.5 * (fx - rz) / l
    } else {
      //z x y  order
      out[0] = 0.5 * (rz + fx) / l
      out[1] = 0.5 * (uz + fy) / l
      out[2] = 0.5 * l
      out[3] = 0.5 * (ry - ux) / l
    }
  }
  return out
}
},{}],449:[function(require,module,exports){
'use strict'

module.exports = createOrbitController

var filterVector  = require('filtered-vector')
var lookAt        = require('gl-mat4/lookAt')
var mat4FromQuat  = require('gl-mat4/fromQuat')
var invert44      = require('gl-mat4/invert')
var quatFromFrame = require('./lib/quatFromFrame')

function len3(x,y,z) {
  return Math.sqrt(Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
}

function len4(w,x,y,z) {
  return Math.sqrt(Math.pow(w,2) + Math.pow(x,2) + Math.pow(y,2) + Math.pow(z,2))
}

function normalize4(out, a) {
  var ax = a[0]
  var ay = a[1]
  var az = a[2]
  var aw = a[3]
  var al = len4(ax, ay, az, aw)
  if(al > 1e-6) {
    out[0] = ax/al
    out[1] = ay/al
    out[2] = az/al
    out[3] = aw/al
  } else {
    out[0] = out[1] = out[2] = 0.0
    out[3] = 1.0
  }
}

function OrbitCameraController(initQuat, initCenter, initRadius) {
  this.radius    = filterVector([initRadius])
  this.center    = filterVector(initCenter)
  this.rotation  = filterVector(initQuat)

  this.computedRadius   = this.radius.curve(0)
  this.computedCenter   = this.center.curve(0)
  this.computedRotation = this.rotation.curve(0)
  this.computedUp       = [0.1,0,0]
  this.computedEye      = [0.1,0,0]
  this.computedMatrix   = [0.1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]

  this.recalcMatrix(0)
}

var proto = OrbitCameraController.prototype

proto.lastT = function() {
  return Math.max(
    this.radius.lastT(),
    this.center.lastT(),
    this.rotation.lastT())
}

proto.recalcMatrix = function(t) {
  this.radius.curve(t)
  this.center.curve(t)
  this.rotation.curve(t)

  var quat = this.computedRotation
  normalize4(quat, quat)

  var mat = this.computedMatrix
  mat4FromQuat(mat, quat)

  var center = this.computedCenter
  var eye    = this.computedEye
  var up     = this.computedUp
  var radius = Math.exp(this.computedRadius[0])

  eye[0] = center[0] + radius * mat[2]
  eye[1] = center[1] + radius * mat[6]
  eye[2] = center[2] + radius * mat[10]
  up[0] = mat[1]
  up[1] = mat[5]
  up[2] = mat[9]

  for(var i=0; i<3; ++i) {
    var rr = 0.0
    for(var j=0; j<3; ++j) {
      rr += mat[i+4*j] * eye[j]
    }
    mat[12+i] = -rr
  }
}

proto.getMatrix = function(t, result) {
  this.recalcMatrix(t)
  var m = this.computedMatrix
  if(result) {
    for(var i=0; i<16; ++i) {
      result[i] = m[i]
    }
    return result
  }
  return m
}

proto.idle = function(t) {
  this.center.idle(t)
  this.radius.idle(t)
  this.rotation.idle(t)
}

proto.flush = function(t) {
  this.center.flush(t)
  this.radius.flush(t)
  this.rotation.flush(t)
}

proto.pan = function(t, dx, dy, dz) {
  dx = dx || 0.0
  dy = dy || 0.0
  dz = dz || 0.0

  this.recalcMatrix(t)
  var mat = this.computedMatrix

  var ux = mat[1]
  var uy = mat[5]
  var uz = mat[9]
  var ul = len3(ux, uy, uz)
  ux /= ul
  uy /= ul
  uz /= ul

  var rx = mat[0]
  var ry = mat[4]
  var rz = mat[8]
  var ru = rx * ux + ry * uy + rz * uz
  rx -= ux * ru
  ry -= uy * ru
  rz -= uz * ru
  var rl = len3(rx, ry, rz)
  rx /= rl
  ry /= rl
  rz /= rl

  var fx = mat[2]
  var fy = mat[6]
  var fz = mat[10]
  var fu = fx * ux + fy * uy + fz * uz
  var fr = fx * rx + fy * ry + fz * rz
  fx -= fu * ux + fr * rx
  fy -= fu * uy + fr * ry
  fz -= fu * uz + fr * rz
  var fl = len3(fx, fy, fz)
  fx /= fl
  fy /= fl
  fz /= fl

  var vx = rx * dx + ux * dy
  var vy = ry * dx + uy * dy
  var vz = rz * dx + uz * dy

  this.center.move(t, vx, vy, vz)

  //Update z-component of radius
  var radius = Math.exp(this.computedRadius[0])
  radius = Math.max(1e-4, radius + dz)
  this.radius.set(t, Math.log(radius))
}

proto.rotate = function(t, dx, dy, dz) {
  this.recalcMatrix(t)

  dx = dx||0.0
  dy = dy||0.0

  var mat = this.computedMatrix

  var rx = mat[0]
  var ry = mat[4]
  var rz = mat[8]

  var ux = mat[1]
  var uy = mat[5]
  var uz = mat[9]

  var fx = mat[2]
  var fy = mat[6]
  var fz = mat[10]

  var qx = dx * rx + dy * ux
  var qy = dx * ry + dy * uy
  var qz = dx * rz + dy * uz

  var bx = -(fy * qz - fz * qy)
  var by = -(fz * qx - fx * qz)
  var bz = -(fx * qy - fy * qx)  
  var bw = Math.sqrt(Math.max(0.0, 1.0 - Math.pow(bx,2) - Math.pow(by,2) - Math.pow(bz,2)))
  var bl = len4(bx, by, bz, bw)
  if(bl > 1e-6) {
    bx /= bl
    by /= bl
    bz /= bl
    bw /= bl
  } else {
    bx = by = bz = 0.0
    bw = 1.0
  }

  var rotation = this.computedRotation
  var ax = rotation[0]
  var ay = rotation[1]
  var az = rotation[2]
  var aw = rotation[3]

  var cx = ax*bw + aw*bx + ay*bz - az*by
  var cy = ay*bw + aw*by + az*bx - ax*bz
  var cz = az*bw + aw*bz + ax*by - ay*bx
  var cw = aw*bw - ax*bx - ay*by - az*bz
  
  //Apply roll
  if(dz) {
    bx = fx
    by = fy
    bz = fz
    var s = Math.sin(dz) / len3(bx, by, bz)
    bx *= s
    by *= s
    bz *= s
    bw = Math.cos(dx)
    cx = cx*bw + cw*bx + cy*bz - cz*by
    cy = cy*bw + cw*by + cz*bx - cx*bz
    cz = cz*bw + cw*bz + cx*by - cy*bx
    cw = cw*bw - cx*bx - cy*by - cz*bz
  }

  var cl = len4(cx, cy, cz, cw)
  if(cl > 1e-6) {
    cx /= cl
    cy /= cl
    cz /= cl
    cw /= cl
  } else {
    cx = cy = cz = 0.0
    cw = 1.0
  }

  this.rotation.set(t, cx, cy, cz, cw)
}

proto.lookAt = function(t, eye, center, up) {
  this.recalcMatrix(t)

  center = center || this.computedCenter
  eye    = eye    || this.computedEye
  up     = up     || this.computedUp

  var mat = this.computedMatrix
  lookAt(mat, eye, center, up)

  var rotation = this.computedRotation
  quatFromFrame(rotation,
    mat[0], mat[1], mat[2],
    mat[4], mat[5], mat[6],
    mat[8], mat[9], mat[10])
  normalize4(rotation, rotation)
  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])

  var fl = 0.0
  for(var i=0; i<3; ++i) {
    fl += Math.pow(center[i] - eye[i], 2)
  }
  this.radius.set(t, 0.5 * Math.log(Math.max(fl, 1e-6)))

  this.center.set(t, center[0], center[1], center[2])
}

proto.translate = function(t, dx, dy, dz) {
  this.center.move(t,
    dx||0.0,
    dy||0.0,
    dz||0.0)
}

proto.setMatrix = function(t, matrix) {

  var rotation = this.computedRotation
  quatFromFrame(rotation,
    matrix[0], matrix[1], matrix[2],
    matrix[4], matrix[5], matrix[6],
    matrix[8], matrix[9], matrix[10])
  normalize4(rotation, rotation)
  this.rotation.set(t, rotation[0], rotation[1], rotation[2], rotation[3])

  var mat = this.computedMatrix
  invert44(mat, matrix)
  var w = mat[15]
  if(Math.abs(w) > 1e-6) {
    var cx = mat[12]/w
    var cy = mat[13]/w
    var cz = mat[14]/w

    this.recalcMatrix(t)  
    var r = Math.exp(this.computedRadius[0])
    this.center.set(t, cx-mat[2]*r, cy-mat[6]*r, cz-mat[10]*r)
    this.radius.idle(t)
  } else {
    this.center.idle(t)
    this.radius.idle(t)
  }
}

proto.setDistance = function(t, d) {
  if(d > 0) {
    this.radius.set(t, Math.log(d))
  }
}

proto.setDistanceLimits = function(lo, hi) {
  if(lo > 0) {
    lo = Math.log(lo)
  } else {
    lo = -Infinity    
  }
  if(hi > 0) {
    hi = Math.log(hi)
  } else {
    hi = Infinity
  }
  hi = Math.max(hi, lo)
  this.radius.bounds[0][0] = lo
  this.radius.bounds[1][0] = hi
}

proto.getDistanceLimits = function(out) {
  var bounds = this.radius.bounds
  if(out) {
    out[0] = Math.exp(bounds[0][0])
    out[1] = Math.exp(bounds[1][0])
    return out
  }
  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
}

proto.toJSON = function() {
  this.recalcMatrix(this.lastT())
  return {
    center:   this.computedCenter.slice(),
    rotation: this.computedRotation.slice(),
    distance: Math.log(this.computedRadius[0]),
    zoomMin:  this.radius.bounds[0][0],
    zoomMax:  this.radius.bounds[1][0]
  }
}

proto.fromJSON = function(options) {
  var t = this.lastT()
  var c = options.center
  if(c) {
    this.center.set(t, c[0], c[1], c[2])
  }
  var r = options.rotation
  if(r) {
    this.rotation.set(t, r[0], r[1], r[2], r[3])
  }
  var d = options.distance
  if(d && d > 0) {
    this.radius.set(t, Math.log(d))
  }
  this.setDistanceLimits(options.zoomMin, options.zoomMax)
}

function createOrbitController(options) {
  options = options || {}
  var center   = options.center   || [0,0,0]
  var rotation = options.rotation || [0,0,0,1]
  var radius   = options.radius   || 1.0

  center = [].slice.call(center, 0, 3)
  rotation = [].slice.call(rotation, 0, 4)
  normalize4(rotation, rotation)

  var result = new OrbitCameraController(
    rotation,
    center,
    Math.log(radius))

  result.setDistanceLimits(options.zoomMin, options.zoomMax)

  if('eye' in options || 'up' in options) {
    result.lookAt(0, options.eye, options.center, options.up)
  }

  return result
}
},{"./lib/quatFromFrame":448,"filtered-vector":99,"gl-mat4/fromQuat":153,"gl-mat4/invert":156,"gl-mat4/lookAt":157}],450:[function(require,module,exports){
/*!
 * pad-left <https://github.com/jonschlinkert/pad-left>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT license.
 */

'use strict';

var repeat = require('repeat-string');

module.exports = function padLeft(str, num, ch) {
  ch = typeof ch !== 'undefined' ? (ch + '') : ' ';
  return repeat(ch, num) + str;
};
},{"repeat-string":946}],451:[function(require,module,exports){
'use strict';


var TYPED_OK =  (typeof Uint8Array !== 'undefined') &&
                (typeof Uint16Array !== 'undefined') &&
                (typeof Int32Array !== 'undefined');


exports.assign = function (obj /*from1, from2, from3, ...*/) {
  var sources = Array.prototype.slice.call(arguments, 1);
  while (sources.length) {
    var source = sources.shift();
    if (!source) { continue; }

    if (typeof source !== 'object') {
      throw new TypeError(source + 'must be non-object');
    }

    for (var p in source) {
      if (source.hasOwnProperty(p)) {
        obj[p] = source[p];
      }
    }
  }

  return obj;
};


// reduce buffer size, avoiding mem copy
exports.shrinkBuf = function (buf, size) {
  if (buf.length === size) { return buf; }
  if (buf.subarray) { return buf.subarray(0, size); }
  buf.length = size;
  return buf;
};


var fnTyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    if (src.subarray && dest.subarray) {
      dest.set(src.subarray(src_offs, src_offs + len), dest_offs);
      return;
    }
    // Fallback to ordinary array
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    var i, l, len, pos, chunk, result;

    // calculate data length
    len = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      len += chunks[i].length;
    }

    // join chunks
    result = new Uint8Array(len);
    pos = 0;
    for (i = 0, l = chunks.length; i < l; i++) {
      chunk = chunks[i];
      result.set(chunk, pos);
      pos += chunk.length;
    }

    return result;
  }
};

var fnUntyped = {
  arraySet: function (dest, src, src_offs, len, dest_offs) {
    for (var i = 0; i < len; i++) {
      dest[dest_offs + i] = src[src_offs + i];
    }
  },
  // Join array of chunks to single array.
  flattenChunks: function (chunks) {
    return [].concat.apply([], chunks);
  }
};


// Enable/Disable typed arrays use, for testing
//
exports.setTyped = function (on) {
  if (on) {
    exports.Buf8  = Uint8Array;
    exports.Buf16 = Uint16Array;
    exports.Buf32 = Int32Array;
    exports.assign(exports, fnTyped);
  } else {
    exports.Buf8  = Array;
    exports.Buf16 = Array;
    exports.Buf32 = Array;
    exports.assign(exports, fnUntyped);
  }
};

exports.setTyped(TYPED_OK);

},{}],452:[function(require,module,exports){
'use strict';

// Note: adler32 takes 12% for level 0 and 2% for level 6.
// It doesn't worth to make additional optimizationa as in original.
// Small size is preferable.

function adler32(adler, buf, len, pos) {
  var s1 = (adler & 0xffff) |0,
      s2 = ((adler >>> 16) & 0xffff) |0,
      n = 0;

  while (len !== 0) {
    // Set limit ~ twice less than 5552, to keep
    // s2 in 31-bits, because we force signed ints.
    // in other case %= will fail.
    n = len > 2000 ? 2000 : len;
    len -= n;

    do {
      s1 = (s1 + buf[pos++]) |0;
      s2 = (s2 + s1) |0;
    } while (--n);

    s1 %= 65521;
    s2 %= 65521;
  }

  return (s1 | (s2 << 16)) |0;
}


module.exports = adler32;

},{}],453:[function(require,module,exports){
'use strict';


module.exports = {

  /* Allowed flush values; see deflate() and inflate() below for details */
  Z_NO_FLUSH:         0,
  Z_PARTIAL_FLUSH:    1,
  Z_SYNC_FLUSH:       2,
  Z_FULL_FLUSH:       3,
  Z_FINISH:           4,
  Z_BLOCK:            5,
  Z_TREES:            6,

  /* Return codes for the compression/decompression functions. Negative values
  * are errors, positive values are used for special but normal events.
  */
  Z_OK:               0,
  Z_STREAM_END:       1,
  Z_NEED_DICT:        2,
  Z_ERRNO:           -1,
  Z_STREAM_ERROR:    -2,
  Z_DATA_ERROR:      -3,
  //Z_MEM_ERROR:     -4,
  Z_BUF_ERROR:       -5,
  //Z_VERSION_ERROR: -6,

  /* compression levels */
  Z_NO_COMPRESSION:         0,
  Z_BEST_SPEED:             1,
  Z_BEST_COMPRESSION:       9,
  Z_DEFAULT_COMPRESSION:   -1,


  Z_FILTERED:               1,
  Z_HUFFMAN_ONLY:           2,
  Z_RLE:                    3,
  Z_FIXED:                  4,
  Z_DEFAULT_STRATEGY:       0,

  /* Possible values of the data_type field (though see inflate()) */
  Z_BINARY:                 0,
  Z_TEXT:                   1,
  //Z_ASCII:                1, // = Z_TEXT (deprecated)
  Z_UNKNOWN:                2,

  /* The deflate compression method */
  Z_DEFLATED:               8
  //Z_NULL:                 null // Use -1 or null inline, depending on var type
};

},{}],454:[function(require,module,exports){
'use strict';

// Note: we can't get significant speed boost here.
// So write code to minimize size - no pregenerated tables
// and array tools dependencies.


// Use ordinary array, since untyped makes no boost here
function makeTable() {
  var c, table = [];

  for (var n = 0; n < 256; n++) {
    c = n;
    for (var k = 0; k < 8; k++) {
      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
    }
    table[n] = c;
  }

  return table;
}

// Create table on load. Just 255 signed longs. Not a problem.
var crcTable = makeTable();


function crc32(crc, buf, len, pos) {
  var t = crcTable,
      end = pos + len;

  crc ^= -1;

  for (var i = pos; i < end; i++) {
    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
  }

  return (crc ^ (-1)); // >>> 0;
}


module.exports = crc32;

},{}],455:[function(require,module,exports){
'use strict';

var utils   = require('../utils/common');
var trees   = require('./trees');
var adler32 = require('./adler32');
var crc32   = require('./crc32');
var msg     = require('./messages');

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
var Z_NO_FLUSH      = 0;
var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
//var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
//var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
//var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;


/* compression levels */
//var Z_NO_COMPRESSION      = 0;
//var Z_BEST_SPEED          = 1;
//var Z_BEST_COMPRESSION    = 9;
var Z_DEFAULT_COMPRESSION = -1;


var Z_FILTERED            = 1;
var Z_HUFFMAN_ONLY        = 2;
var Z_RLE                 = 3;
var Z_FIXED               = 4;
var Z_DEFAULT_STRATEGY    = 0;

/* Possible values of the data_type field (though see inflate()) */
//var Z_BINARY              = 0;
//var Z_TEXT                = 1;
//var Z_ASCII               = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;


/* The deflate compression method */
var Z_DEFLATED  = 8;

/*============================================================================*/


var MAX_MEM_LEVEL = 9;
/* Maximum value for memLevel in deflateInit2 */
var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_MEM_LEVEL = 8;


var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */
var LITERALS      = 256;
/* number of literal bytes 0..255 */
var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */
var D_CODES       = 30;
/* number of distance codes */
var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */
var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */
var MAX_BITS  = 15;
/* All codes must not exceed MAX_BITS bits */

var MIN_MATCH = 3;
var MAX_MATCH = 258;
var MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);

var PRESET_DICT = 0x20;

var INIT_STATE = 42;
var EXTRA_STATE = 69;
var NAME_STATE = 73;
var COMMENT_STATE = 91;
var HCRC_STATE = 103;
var BUSY_STATE = 113;
var FINISH_STATE = 666;

var BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
var BS_BLOCK_DONE     = 2; /* block flush performed */
var BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
var BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */

var OS_CODE = 0x03; // Unix :) . Don't detect, use this default.

function err(strm, errorCode) {
  strm.msg = msg[errorCode];
  return errorCode;
}

function rank(f) {
  return ((f) << 1) - ((f) > 4 ? 9 : 0);
}

function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }


/* =========================================================================
 * Flush as much pending output as possible. All deflate() output goes
 * through this function so some applications may wish to modify it
 * to avoid allocating a large strm->output buffer and copying into it.
 * (See also read_buf()).
 */
function flush_pending(strm) {
  var s = strm.state;

  //_tr_flush_bits(s);
  var len = s.pending;
  if (len > strm.avail_out) {
    len = strm.avail_out;
  }
  if (len === 0) { return; }

  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);
  strm.next_out += len;
  s.pending_out += len;
  strm.total_out += len;
  strm.avail_out -= len;
  s.pending -= len;
  if (s.pending === 0) {
    s.pending_out = 0;
  }
}


function flush_block_only(s, last) {
  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
  s.block_start = s.strstart;
  flush_pending(s.strm);
}


function put_byte(s, b) {
  s.pending_buf[s.pending++] = b;
}


/* =========================================================================
 * Put a short in the pending buffer. The 16-bit value is put in MSB order.
 * IN assertion: the stream state is correct and there is enough room in
 * pending_buf.
 */
function putShortMSB(s, b) {
//  put_byte(s, (Byte)(b >> 8));
//  put_byte(s, (Byte)(b & 0xff));
  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
  s.pending_buf[s.pending++] = b & 0xff;
}


/* ===========================================================================
 * Read a new buffer from the current input stream, update the adler32
 * and total number of bytes read.  All deflate() input goes through
 * this function so some applications may wish to modify it to avoid
 * allocating a large strm->input buffer and copying from it.
 * (See also flush_pending()).
 */
function read_buf(strm, buf, start, size) {
  var len = strm.avail_in;

  if (len > size) { len = size; }
  if (len === 0) { return 0; }

  strm.avail_in -= len;

  // zmemcpy(buf, strm->next_in, len);
  utils.arraySet(buf, strm.input, strm.next_in, len, start);
  if (strm.state.wrap === 1) {
    strm.adler = adler32(strm.adler, buf, len, start);
  }

  else if (strm.state.wrap === 2) {
    strm.adler = crc32(strm.adler, buf, len, start);
  }

  strm.next_in += len;
  strm.total_in += len;

  return len;
}


/* ===========================================================================
 * Set match_start to the longest match starting at the given string and
 * return its length. Matches shorter or equal to prev_length are discarded,
 * in which case the result is equal to prev_length and match_start is
 * garbage.
 * IN assertions: cur_match is the head of the hash chain for the current
 *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
 * OUT assertion: the match length is not greater than s->lookahead.
 */
function longest_match(s, cur_match) {
  var chain_length = s.max_chain_length;      /* max hash chain length */
  var scan = s.strstart; /* current string */
  var match;                       /* matched string */
  var len;                           /* length of current match */
  var best_len = s.prev_length;              /* best match length so far */
  var nice_match = s.nice_match;             /* stop if match long enough */
  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;

  var _win = s.window; // shortcut

  var wmask = s.w_mask;
  var prev  = s.prev;

  /* Stop when cur_match becomes <= limit. To simplify the code,
   * we prevent matches with the string of window index 0.
   */

  var strend = s.strstart + MAX_MATCH;
  var scan_end1  = _win[scan + best_len - 1];
  var scan_end   = _win[scan + best_len];

  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
   * It is easy to get rid of this optimization if necessary.
   */
  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

  /* Do not waste too much time if we already have a good match: */
  if (s.prev_length >= s.good_match) {
    chain_length >>= 2;
  }
  /* Do not look for matches beyond the end of the input. This is necessary
   * to make deflate deterministic.
   */
  if (nice_match > s.lookahead) { nice_match = s.lookahead; }

  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");

  do {
    // Assert(cur_match < s->strstart, "no future");
    match = cur_match;

    /* Skip to next match if the match length cannot increase
     * or if the match length is less than 2.  Note that the checks below
     * for insufficient lookahead only occur occasionally for performance
     * reasons.  Therefore uninitialized memory will be accessed, and
     * conditional jumps will be made that depend on those values.
     * However the length of the match is limited to the lookahead, so
     * the output of deflate is not affected by the uninitialized values.
     */

    if (_win[match + best_len]     !== scan_end  ||
        _win[match + best_len - 1] !== scan_end1 ||
        _win[match]                !== _win[scan] ||
        _win[++match]              !== _win[scan + 1]) {
      continue;
    }

    /* The check at best_len-1 can be removed because it will be made
     * again later. (This heuristic is not always a win.)
     * It is not necessary to compare scan[2] and match[2] since they
     * are always equal when the other bytes match, given that
     * the hash keys are equal and that HASH_BITS >= 8.
     */
    scan += 2;
    match++;
    // Assert(*scan == *match, "match[2]?");

    /* We check for insufficient lookahead only every 8th comparison;
     * the 256th check will be made at strstart+258.
     */
    do {
      /*jshint noempty:false*/
    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
             scan < strend);

    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");

    len = MAX_MATCH - (strend - scan);
    scan = strend - MAX_MATCH;

    if (len > best_len) {
      s.match_start = cur_match;
      best_len = len;
      if (len >= nice_match) {
        break;
      }
      scan_end1  = _win[scan + best_len - 1];
      scan_end   = _win[scan + best_len];
    }
  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);

  if (best_len <= s.lookahead) {
    return best_len;
  }
  return s.lookahead;
}


/* ===========================================================================
 * Fill the window when the lookahead becomes insufficient.
 * Updates strstart and lookahead.
 *
 * IN assertion: lookahead < MIN_LOOKAHEAD
 * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
 *    At least one byte has been read, or avail_in == 0; reads are
 *    performed for at least two bytes (required for the zip translate_eol
 *    option -- not supported here).
 */
function fill_window(s) {
  var _w_size = s.w_size;
  var p, n, m, more, str;

  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");

  do {
    more = s.window_size - s.lookahead - s.strstart;

    // JS ints have 32 bit, block below not needed
    /* Deal with !@#$% 64K limit: */
    //if (sizeof(int) <= 2) {
    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
    //        more = wsize;
    //
    //  } else if (more == (unsigned)(-1)) {
    //        /* Very unlikely, but possible on 16 bit machine if
    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
    //         */
    //        more--;
    //    }
    //}


    /* If the window is almost full and there is insufficient lookahead,
     * move the upper half to the lower one to make room in the upper half.
     */
    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {

      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);
      s.match_start -= _w_size;
      s.strstart -= _w_size;
      /* we now have strstart >= MAX_DIST */
      s.block_start -= _w_size;

      /* Slide the hash table (could be avoided with 32 bit values
       at the expense of memory usage). We slide even when level == 0
       to keep the hash table consistent if we switch back to level > 0
       later. (Using level 0 permanently is not an optimal usage of
       zlib, so we don't care about this pathological case.)
       */

      n = s.hash_size;
      p = n;
      do {
        m = s.head[--p];
        s.head[p] = (m >= _w_size ? m - _w_size : 0);
      } while (--n);

      n = _w_size;
      p = n;
      do {
        m = s.prev[--p];
        s.prev[p] = (m >= _w_size ? m - _w_size : 0);
        /* If n is not on any hash chain, prev[n] is garbage but
         * its value will never be used.
         */
      } while (--n);

      more += _w_size;
    }
    if (s.strm.avail_in === 0) {
      break;
    }

    /* If there was no sliding:
     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
     *    more == window_size - lookahead - strstart
     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
     * => more >= window_size - 2*WSIZE + 2
     * In the BIG_MEM or MMAP case (not yet supported),
     *   window_size == input_size + MIN_LOOKAHEAD  &&
     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
     * Otherwise, window_size == 2*WSIZE so more >= 2.
     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
     */
    //Assert(more >= 2, "more < 2");
    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
    s.lookahead += n;

    /* Initialize the hash value now that we have some input: */
    if (s.lookahead + s.insert >= MIN_MATCH) {
      str = s.strstart - s.insert;
      s.ins_h = s.window[str];

      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;
//#if MIN_MATCH != 3
//        Call update_hash() MIN_MATCH-3 more times
//#endif
      while (s.insert) {
        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

        s.prev[str & s.w_mask] = s.head[s.ins_h];
        s.head[s.ins_h] = str;
        str++;
        s.insert--;
        if (s.lookahead + s.insert < MIN_MATCH) {
          break;
        }
      }
    }
    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
     * but this is not important since only literal bytes will be emitted.
     */

  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);

  /* If the WIN_INIT bytes after the end of the current data have never been
   * written, then zero those bytes in order to avoid memory check reports of
   * the use of uninitialized (or uninitialised as Julian writes) bytes by
   * the longest match routines.  Update the high water mark for the next
   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
   */
//  if (s.high_water < s.window_size) {
//    var curr = s.strstart + s.lookahead;
//    var init = 0;
//
//    if (s.high_water < curr) {
//      /* Previous high water mark below current data -- zero WIN_INIT
//       * bytes or up to end of window, whichever is less.
//       */
//      init = s.window_size - curr;
//      if (init > WIN_INIT)
//        init = WIN_INIT;
//      zmemzero(s->window + curr, (unsigned)init);
//      s->high_water = curr + init;
//    }
//    else if (s->high_water < (ulg)curr + WIN_INIT) {
//      /* High water mark at or above current data, but below current data
//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
//       * to end of window, whichever is less.
//       */
//      init = (ulg)curr + WIN_INIT - s->high_water;
//      if (init > s->window_size - s->high_water)
//        init = s->window_size - s->high_water;
//      zmemzero(s->window + s->high_water, (unsigned)init);
//      s->high_water += init;
//    }
//  }
//
//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
//    "not enough room for search");
}

/* ===========================================================================
 * Copy without compression as much as possible from the input stream, return
 * the current block state.
 * This function does not insert new strings in the dictionary since
 * uncompressible data is probably not useful. This function is used
 * only for the level=0 compression option.
 * NOTE: this function should be optimized to avoid extra copying from
 * window to pending_buf.
 */
function deflate_stored(s, flush) {
  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
   * to pending_buf_size, and each stored block has a 5 byte header:
   */
  var max_block_size = 0xffff;

  if (max_block_size > s.pending_buf_size - 5) {
    max_block_size = s.pending_buf_size - 5;
  }

  /* Copy as much as possible from input to output: */
  for (;;) {
    /* Fill the window as much as possible: */
    if (s.lookahead <= 1) {

      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||
      //  s->block_start >= (long)s->w_size, "slide too late");
//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||
//        s.block_start >= s.w_size)) {
//        throw  new Error("slide too late");
//      }

      fill_window(s);
      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }

      if (s.lookahead === 0) {
        break;
      }
      /* flush the current block */
    }
    //Assert(s->block_start >= 0L, "block gone");
//    if (s.block_start < 0) throw new Error("block gone");

    s.strstart += s.lookahead;
    s.lookahead = 0;

    /* Emit a stored block if pending_buf will be full: */
    var max_start = s.block_start + max_block_size;

    if (s.strstart === 0 || s.strstart >= max_start) {
      /* strstart == 0 is possible when wraparound on 16-bit machine */
      s.lookahead = s.strstart - max_start;
      s.strstart = max_start;
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/


    }
    /* Flush if we may have to slide, otherwise block_start may become
     * negative and the data will be gone:
     */
    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }

  s.insert = 0;

  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }

  if (s.strstart > s.block_start) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_NEED_MORE;
}

/* ===========================================================================
 * Compress as much as possible from the input stream, return the current
 * block state.
 * This function does not perform lazy evaluation of matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
function deflate_fast(s, flush) {
  var hash_head;        /* head of the hash chain */
  var bflush;           /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) {
        break; /* flush the current block */
      }
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     * At this point we have always match_length < MIN_MATCH
     */
    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */
    }
    if (s.match_length >= MIN_MATCH) {
      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only

      /*** _tr_tally_dist(s, s.strstart - s.match_start,
                     s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;

      /* Insert new strings in the hash table only if the match length
       * is not too large. This saves time but degrades compression.
       */
      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
        s.match_length--; /* string at strstart already in table */
        do {
          s.strstart++;
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
           * always MIN_MATCH bytes ahead.
           */
        } while (--s.match_length !== 0);
        s.strstart++;
      } else
      {
        s.strstart += s.match_length;
        s.match_length = 0;
        s.ins_h = s.window[s.strstart];
        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;

//#if MIN_MATCH != 3
//                Call UPDATE_HASH() MIN_MATCH-3 more times
//#endif
        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
         * matter since it will be recomputed at next deflate call.
         */
      }
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s.window[s.strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * Same as above, but achieves better compression. We use a lazy
 * evaluation for matches: a match is finally adopted only if there is
 * no better match at the next window position.
 */
function deflate_slow(s, flush) {
  var hash_head;          /* head of hash chain */
  var bflush;              /* set if current block must be flushed */

  var max_insert;

  /* Process the input block. */
  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the next match, plus MIN_MATCH bytes to insert the
     * string following the next match.
     */
    if (s.lookahead < MIN_LOOKAHEAD) {
      fill_window(s);
      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* Insert the string window[strstart .. strstart+2] in the
     * dictionary, and set hash_head to the head of the hash chain:
     */
    hash_head = 0/*NIL*/;
    if (s.lookahead >= MIN_MATCH) {
      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
      s.head[s.ins_h] = s.strstart;
      /***/
    }

    /* Find the longest match, discarding those <= prev_length.
     */
    s.prev_length = s.match_length;
    s.prev_match = s.match_start;
    s.match_length = MIN_MATCH - 1;

    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
      /* To simplify the code, we prevent matches with the string
       * of window index 0 (in particular we have to avoid a match
       * of the string with itself at the start of the input file).
       */
      s.match_length = longest_match(s, hash_head);
      /* longest_match() sets match_start */

      if (s.match_length <= 5 &&
         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {

        /* If prev_match is also MIN_MATCH, match_start is garbage
         * but we will ignore the current match anyway.
         */
        s.match_length = MIN_MATCH - 1;
      }
    }
    /* If there was a match at the previous step and the current
     * match is not better, output the previous match:
     */
    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
      max_insert = s.strstart + s.lookahead - MIN_MATCH;
      /* Do not insert strings in hash table beyond this. */

      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);

      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
                     s.prev_length - MIN_MATCH, bflush);***/
      bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
      /* Insert in hash table all strings up to the end of the match.
       * strstart-1 and strstart are already inserted. If there is not
       * enough lookahead, the last two strings are not inserted in
       * the hash table.
       */
      s.lookahead -= s.prev_length - 1;
      s.prev_length -= 2;
      do {
        if (++s.strstart <= max_insert) {
          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;
          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
          s.head[s.ins_h] = s.strstart;
          /***/
        }
      } while (--s.prev_length !== 0);
      s.match_available = 0;
      s.match_length = MIN_MATCH - 1;
      s.strstart++;

      if (bflush) {
        /*** FLUSH_BLOCK(s, 0); ***/
        flush_block_only(s, false);
        if (s.strm.avail_out === 0) {
          return BS_NEED_MORE;
        }
        /***/
      }

    } else if (s.match_available) {
      /* If there was no match at the previous position, output a
       * single literal. If there was a match but the current match
       * is longer, truncate the previous match to a single literal.
       */
      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

      if (bflush) {
        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
        flush_block_only(s, false);
        /***/
      }
      s.strstart++;
      s.lookahead--;
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
    } else {
      /* There is no previous match to compare with, wait for
       * the next step to decide.
       */
      s.match_available = 1;
      s.strstart++;
      s.lookahead--;
    }
  }
  //Assert (flush != Z_NO_FLUSH, "no flush?");
  if (s.match_available) {
    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);

    s.match_available = 0;
  }
  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }

  return BS_BLOCK_DONE;
}


/* ===========================================================================
 * For Z_RLE, simply look for runs of bytes, generate matches only of distance
 * one.  Do not maintain a hash table.  (It will be regenerated if this run of
 * deflate switches away from Z_RLE.)
 */
function deflate_rle(s, flush) {
  var bflush;            /* set if current block must be flushed */
  var prev;              /* byte at distance one to match */
  var scan, strend;      /* scan goes up to strend for length of run */

  var _win = s.window;

  for (;;) {
    /* Make sure that we always have enough lookahead, except
     * at the end of the input file. We need MAX_MATCH bytes
     * for the longest run, plus one for the unrolled loop.
     */
    if (s.lookahead <= MAX_MATCH) {
      fill_window(s);
      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {
        return BS_NEED_MORE;
      }
      if (s.lookahead === 0) { break; } /* flush the current block */
    }

    /* See how many times the previous byte repeats */
    s.match_length = 0;
    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
      scan = s.strstart - 1;
      prev = _win[scan];
      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
        strend = s.strstart + MAX_MATCH;
        do {
          /*jshint noempty:false*/
        } while (prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 prev === _win[++scan] && prev === _win[++scan] &&
                 scan < strend);
        s.match_length = MAX_MATCH - (strend - scan);
        if (s.match_length > s.lookahead) {
          s.match_length = s.lookahead;
        }
      }
      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
    }

    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
    if (s.match_length >= MIN_MATCH) {
      //check_match(s, s.strstart, s.strstart - 1, s.match_length);

      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);

      s.lookahead -= s.match_length;
      s.strstart += s.match_length;
      s.match_length = 0;
    } else {
      /* No match, output a literal byte */
      //Tracevv((stderr,"%c", s->window[s->strstart]));
      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);

      s.lookahead--;
      s.strstart++;
    }
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* ===========================================================================
 * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
 * (It will be regenerated if this run of deflate switches away from Huffman.)
 */
function deflate_huff(s, flush) {
  var bflush;             /* set if current block must be flushed */

  for (;;) {
    /* Make sure that we have a literal to write. */
    if (s.lookahead === 0) {
      fill_window(s);
      if (s.lookahead === 0) {
        if (flush === Z_NO_FLUSH) {
          return BS_NEED_MORE;
        }
        break;      /* flush the current block */
      }
    }

    /* Output a literal byte */
    s.match_length = 0;
    //Tracevv((stderr,"%c", s->window[s->strstart]));
    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);
    s.lookahead--;
    s.strstart++;
    if (bflush) {
      /*** FLUSH_BLOCK(s, 0); ***/
      flush_block_only(s, false);
      if (s.strm.avail_out === 0) {
        return BS_NEED_MORE;
      }
      /***/
    }
  }
  s.insert = 0;
  if (flush === Z_FINISH) {
    /*** FLUSH_BLOCK(s, 1); ***/
    flush_block_only(s, true);
    if (s.strm.avail_out === 0) {
      return BS_FINISH_STARTED;
    }
    /***/
    return BS_FINISH_DONE;
  }
  if (s.last_lit) {
    /*** FLUSH_BLOCK(s, 0); ***/
    flush_block_only(s, false);
    if (s.strm.avail_out === 0) {
      return BS_NEED_MORE;
    }
    /***/
  }
  return BS_BLOCK_DONE;
}

/* Values for max_lazy_match, good_match and max_chain_length, depending on
 * the desired pack level (0..9). The values given below have been tuned to
 * exclude worst case performance for pathological files. Better values may be
 * found for specific files.
 */
function Config(good_length, max_lazy, nice_length, max_chain, func) {
  this.good_length = good_length;
  this.max_lazy = max_lazy;
  this.nice_length = nice_length;
  this.max_chain = max_chain;
  this.func = func;
}

var configuration_table;

configuration_table = [
  /*      good lazy nice chain */
  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */

  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
];


/* ===========================================================================
 * Initialize the "longest match" routines for a new zlib stream
 */
function lm_init(s) {
  s.window_size = 2 * s.w_size;

  /*** CLEAR_HASH(s); ***/
  zero(s.head); // Fill with NIL (= 0);

  /* Set the default configuration parameters:
   */
  s.max_lazy_match = configuration_table[s.level].max_lazy;
  s.good_match = configuration_table[s.level].good_length;
  s.nice_match = configuration_table[s.level].nice_length;
  s.max_chain_length = configuration_table[s.level].max_chain;

  s.strstart = 0;
  s.block_start = 0;
  s.lookahead = 0;
  s.insert = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  s.ins_h = 0;
}


function DeflateState() {
  this.strm = null;            /* pointer back to this zlib stream */
  this.status = 0;            /* as the name implies */
  this.pending_buf = null;      /* output still pending */
  this.pending_buf_size = 0;  /* size of pending_buf */
  this.pending_out = 0;       /* next pending byte to output to the stream */
  this.pending = 0;           /* nb of bytes in the pending buffer */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.gzhead = null;         /* gzip header information to write */
  this.gzindex = 0;           /* where in extra, name, or comment */
  this.method = Z_DEFLATED; /* can only be DEFLATED */
  this.last_flush = -1;   /* value of flush param for previous deflate call */

  this.w_size = 0;  /* LZ77 window size (32K by default) */
  this.w_bits = 0;  /* log2(w_size)  (8..16) */
  this.w_mask = 0;  /* w_size - 1 */

  this.window = null;
  /* Sliding window. Input bytes are read into the second half of the window,
   * and move to the first half later to keep a dictionary of at least wSize
   * bytes. With this organization, matches are limited to a distance of
   * wSize-MAX_MATCH bytes, but this ensures that IO is always
   * performed with a length multiple of the block size.
   */

  this.window_size = 0;
  /* Actual size of window: 2*wSize, except when the user input buffer
   * is directly used as sliding window.
   */

  this.prev = null;
  /* Link to older string with same hash index. To limit the size of this
   * array to 64K, this link is maintained only for the last 32K strings.
   * An index in this array is thus a window index modulo 32K.
   */

  this.head = null;   /* Heads of the hash chains or NIL. */

  this.ins_h = 0;       /* hash index of string to be inserted */
  this.hash_size = 0;   /* number of elements in hash table */
  this.hash_bits = 0;   /* log2(hash_size) */
  this.hash_mask = 0;   /* hash_size-1 */

  this.hash_shift = 0;
  /* Number of bits by which ins_h must be shifted at each input
   * step. It must be such that after MIN_MATCH steps, the oldest
   * byte no longer takes part in the hash key, that is:
   *   hash_shift * MIN_MATCH >= hash_bits
   */

  this.block_start = 0;
  /* Window position at the beginning of the current output block. Gets
   * negative when the window is moved backwards.
   */

  this.match_length = 0;      /* length of best match */
  this.prev_match = 0;        /* previous match */
  this.match_available = 0;   /* set if previous match exists */
  this.strstart = 0;          /* start of string to insert */
  this.match_start = 0;       /* start of matching string */
  this.lookahead = 0;         /* number of valid bytes ahead in window */

  this.prev_length = 0;
  /* Length of the best match at previous step. Matches not greater than this
   * are discarded. This is used in the lazy match evaluation.
   */

  this.max_chain_length = 0;
  /* To speed up deflation, hash chains are never searched beyond this
   * length.  A higher limit improves compression ratio but degrades the
   * speed.
   */

  this.max_lazy_match = 0;
  /* Attempt to find a better match only when the current match is strictly
   * smaller than this value. This mechanism is used only for compression
   * levels >= 4.
   */
  // That's alias to max_lazy_match, don't use directly
  //this.max_insert_length = 0;
  /* Insert new strings in the hash table only if the match length is not
   * greater than this length. This saves time but degrades compression.
   * max_insert_length is used only for compression levels <= 3.
   */

  this.level = 0;     /* compression level (1..9) */
  this.strategy = 0;  /* favor or force Huffman coding*/

  this.good_match = 0;
  /* Use a faster search when the previous match is longer than this */

  this.nice_match = 0; /* Stop searching when current match exceeds this */

              /* used by trees.c: */

  /* Didn't use ct_data typedef below to suppress compiler warning */

  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */

  // Use flat array of DOUBLE size, with interleaved fata,
  // because JS does not support effective
  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);
  this.dyn_dtree  = new utils.Buf16((2 * D_CODES + 1) * 2);
  this.bl_tree    = new utils.Buf16((2 * BL_CODES + 1) * 2);
  zero(this.dyn_ltree);
  zero(this.dyn_dtree);
  zero(this.bl_tree);

  this.l_desc   = null;         /* desc. for literal tree */
  this.d_desc   = null;         /* desc. for distance tree */
  this.bl_desc  = null;         /* desc. for bit length tree */

  //ush bl_count[MAX_BITS+1];
  this.bl_count = new utils.Buf16(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
  this.heap = new utils.Buf16(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
  zero(this.heap);

  this.heap_len = 0;               /* number of elements in the heap */
  this.heap_max = 0;               /* element of largest frequency */
  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
   * The same heap array is used to build all trees.
   */

  this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
  zero(this.depth);
  /* Depth of each subtree used as tie breaker for trees of equal frequency
   */

  this.l_buf = 0;          /* buffer index for literals or lengths */

  this.lit_bufsize = 0;
  /* Size of match buffer for literals/lengths.  There are 4 reasons for
   * limiting lit_bufsize to 64K:
   *   - frequencies can be kept in 16 bit counters
   *   - if compression is not successful for the first block, all input
   *     data is still in the window so we can still emit a stored block even
   *     when input comes from standard input.  (This can also be done for
   *     all blocks if lit_bufsize is not greater than 32K.)
   *   - if compression is not successful for a file smaller than 64K, we can
   *     even emit a stored file instead of a stored block (saving 5 bytes).
   *     This is applicable only for zip (not gzip or zlib).
   *   - creating new Huffman trees less frequently may not provide fast
   *     adaptation to changes in the input data statistics. (Take for
   *     example a binary file with poorly compressible code followed by
   *     a highly compressible string table.) Smaller buffer sizes give
   *     fast adaptation but have of course the overhead of transmitting
   *     trees more frequently.
   *   - I can't count above 4
   */

  this.last_lit = 0;      /* running index in l_buf */

  this.d_buf = 0;
  /* Buffer index for distances. To simplify the code, d_buf and l_buf have
   * the same number of elements. To use different lengths, an extra flag
   * array would be necessary.
   */

  this.opt_len = 0;       /* bit length of current block with optimal trees */
  this.static_len = 0;    /* bit length of current block with static trees */
  this.matches = 0;       /* number of string matches in current block */
  this.insert = 0;        /* bytes at end of window left to insert */


  this.bi_buf = 0;
  /* Output buffer. bits are inserted starting at the bottom (least
   * significant bits).
   */
  this.bi_valid = 0;
  /* Number of valid bits in bi_buf.  All bits above the last valid bit
   * are always zero.
   */

  // Used for window memory init. We safely ignore it for JS. That makes
  // sense only for pointers and memory check tools.
  //this.high_water = 0;
  /* High water mark offset in window for initialized bytes -- bytes above
   * this are set to zero in order to avoid memory check warnings when
   * longest match routines access bytes past the input.  This is then
   * updated to the new high water mark.
   */
}


function deflateResetKeep(strm) {
  var s;

  if (!strm || !strm.state) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.total_in = strm.total_out = 0;
  strm.data_type = Z_UNKNOWN;

  s = strm.state;
  s.pending = 0;
  s.pending_out = 0;

  if (s.wrap < 0) {
    s.wrap = -s.wrap;
    /* was made negative by deflate(..., Z_FINISH); */
  }
  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);
  strm.adler = (s.wrap === 2) ?
    0  // crc32(0, Z_NULL, 0)
  :
    1; // adler32(0, Z_NULL, 0)
  s.last_flush = Z_NO_FLUSH;
  trees._tr_init(s);
  return Z_OK;
}


function deflateReset(strm) {
  var ret = deflateResetKeep(strm);
  if (ret === Z_OK) {
    lm_init(strm.state);
  }
  return ret;
}


function deflateSetHeader(strm, head) {
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }
  strm.state.gzhead = head;
  return Z_OK;
}


function deflateInit2(strm, level, method, windowBits, memLevel, strategy) {
  if (!strm) { // === Z_NULL
    return Z_STREAM_ERROR;
  }
  var wrap = 1;

  if (level === Z_DEFAULT_COMPRESSION) {
    level = 6;
  }

  if (windowBits < 0) { /* suppress zlib wrapper */
    wrap = 0;
    windowBits = -windowBits;
  }

  else if (windowBits > 15) {
    wrap = 2;           /* write gzip wrapper instead */
    windowBits -= 16;
  }


  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||
    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
    strategy < 0 || strategy > Z_FIXED) {
    return err(strm, Z_STREAM_ERROR);
  }


  if (windowBits === 8) {
    windowBits = 9;
  }
  /* until 256-byte window bug fixed */

  var s = new DeflateState();

  strm.state = s;
  s.strm = strm;

  s.wrap = wrap;
  s.gzhead = null;
  s.w_bits = windowBits;
  s.w_size = 1 << s.w_bits;
  s.w_mask = s.w_size - 1;

  s.hash_bits = memLevel + 7;
  s.hash_size = 1 << s.hash_bits;
  s.hash_mask = s.hash_size - 1;
  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);

  s.window = new utils.Buf8(s.w_size * 2);
  s.head = new utils.Buf16(s.hash_size);
  s.prev = new utils.Buf16(s.w_size);

  // Don't need mem init magic for JS.
  //s.high_water = 0;  /* nothing written to s->window yet */

  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */

  s.pending_buf_size = s.lit_bufsize * 4;

  //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
  //s->pending_buf = (uchf *) overlay;
  s.pending_buf = new utils.Buf8(s.pending_buf_size);

  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
  //s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
  s.d_buf = 1 * s.lit_bufsize;

  //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
  s.l_buf = (1 + 2) * s.lit_bufsize;

  s.level = level;
  s.strategy = strategy;
  s.method = method;

  return deflateReset(strm);
}

function deflateInit(strm, level) {
  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
}


function deflate(strm, flush) {
  var old_flush, s;
  var beg, val; // for gzip header write only

  if (!strm || !strm.state ||
    flush > Z_BLOCK || flush < 0) {
    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;
  }

  s = strm.state;

  if (!strm.output ||
      (!strm.input && strm.avail_in !== 0) ||
      (s.status === FINISH_STATE && flush !== Z_FINISH)) {
    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);
  }

  s.strm = strm; /* just in case */
  old_flush = s.last_flush;
  s.last_flush = flush;

  /* Write the header */
  if (s.status === INIT_STATE) {

    if (s.wrap === 2) { // GZIP header
      strm.adler = 0;  //crc32(0L, Z_NULL, 0);
      put_byte(s, 31);
      put_byte(s, 139);
      put_byte(s, 8);
      if (!s.gzhead) { // s->gzhead == Z_NULL
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, 0);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, OS_CODE);
        s.status = BUSY_STATE;
      }
      else {
        put_byte(s, (s.gzhead.text ? 1 : 0) +
                    (s.gzhead.hcrc ? 2 : 0) +
                    (!s.gzhead.extra ? 0 : 4) +
                    (!s.gzhead.name ? 0 : 8) +
                    (!s.gzhead.comment ? 0 : 16)
                );
        put_byte(s, s.gzhead.time & 0xff);
        put_byte(s, (s.gzhead.time >> 8) & 0xff);
        put_byte(s, (s.gzhead.time >> 16) & 0xff);
        put_byte(s, (s.gzhead.time >> 24) & 0xff);
        put_byte(s, s.level === 9 ? 2 :
                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
                     4 : 0));
        put_byte(s, s.gzhead.os & 0xff);
        if (s.gzhead.extra && s.gzhead.extra.length) {
          put_byte(s, s.gzhead.extra.length & 0xff);
          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
        }
        if (s.gzhead.hcrc) {
          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);
        }
        s.gzindex = 0;
        s.status = EXTRA_STATE;
      }
    }
    else // DEFLATE header
    {
      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
      var level_flags = -1;

      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
        level_flags = 0;
      } else if (s.level < 6) {
        level_flags = 1;
      } else if (s.level === 6) {
        level_flags = 2;
      } else {
        level_flags = 3;
      }
      header |= (level_flags << 6);
      if (s.strstart !== 0) { header |= PRESET_DICT; }
      header += 31 - (header % 31);

      s.status = BUSY_STATE;
      putShortMSB(s, header);

      /* Save the adler32 of the preset dictionary: */
      if (s.strstart !== 0) {
        putShortMSB(s, strm.adler >>> 16);
        putShortMSB(s, strm.adler & 0xffff);
      }
      strm.adler = 1; // adler32(0L, Z_NULL, 0);
    }
  }

//#ifdef GZIP
  if (s.status === EXTRA_STATE) {
    if (s.gzhead.extra/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */

      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            break;
          }
        }
        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);
        s.gzindex++;
      }
      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (s.gzindex === s.gzhead.extra.length) {
        s.gzindex = 0;
        s.status = NAME_STATE;
      }
    }
    else {
      s.status = NAME_STATE;
    }
  }
  if (s.status === NAME_STATE) {
    if (s.gzhead.name/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.name.length) {
          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.gzindex = 0;
        s.status = COMMENT_STATE;
      }
    }
    else {
      s.status = COMMENT_STATE;
    }
  }
  if (s.status === COMMENT_STATE) {
    if (s.gzhead.comment/* != Z_NULL*/) {
      beg = s.pending;  /* start of bytes to update crc */
      //int val;

      do {
        if (s.pending === s.pending_buf_size) {
          if (s.gzhead.hcrc && s.pending > beg) {
            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
          }
          flush_pending(strm);
          beg = s.pending;
          if (s.pending === s.pending_buf_size) {
            val = 1;
            break;
          }
        }
        // JS specific: little magic to add zero terminator to end of string
        if (s.gzindex < s.gzhead.comment.length) {
          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
        } else {
          val = 0;
        }
        put_byte(s, val);
      } while (val !== 0);

      if (s.gzhead.hcrc && s.pending > beg) {
        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);
      }
      if (val === 0) {
        s.status = HCRC_STATE;
      }
    }
    else {
      s.status = HCRC_STATE;
    }
  }
  if (s.status === HCRC_STATE) {
    if (s.gzhead.hcrc) {
      if (s.pending + 2 > s.pending_buf_size) {
        flush_pending(strm);
      }
      if (s.pending + 2 <= s.pending_buf_size) {
        put_byte(s, strm.adler & 0xff);
        put_byte(s, (strm.adler >> 8) & 0xff);
        strm.adler = 0; //crc32(0L, Z_NULL, 0);
        s.status = BUSY_STATE;
      }
    }
    else {
      s.status = BUSY_STATE;
    }
  }
//#endif

  /* Flush as much pending output as possible */
  if (s.pending !== 0) {
    flush_pending(strm);
    if (strm.avail_out === 0) {
      /* Since avail_out is 0, deflate will be called again with
       * more output space, but possibly with both pending and
       * avail_in equal to zero. There won't be anything to do,
       * but this is not an error situation so make sure we
       * return OK instead of BUF_ERROR at next call of deflate:
       */
      s.last_flush = -1;
      return Z_OK;
    }

    /* Make sure there is something to do and avoid duplicate consecutive
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
    flush !== Z_FINISH) {
    return err(strm, Z_BUF_ERROR);
  }

  /* User must not provide more input after the first FINISH: */
  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
    return err(strm, Z_BUF_ERROR);
  }

  /* Start a new block or continue the current one.
   */
  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {
    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :
      (s.strategy === Z_RLE ? deflate_rle(s, flush) :
        configuration_table[s.level].func(s, flush));

    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
      s.status = FINISH_STATE;
    }
    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
      if (strm.avail_out === 0) {
        s.last_flush = -1;
        /* avoid BUF_ERROR next call, see above */
      }
      return Z_OK;
      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
       * of deflate should use the same flush parameter to make sure
       * that the flush is complete. So we don't have to output an
       * empty block here, this will be done at next call. This also
       * ensures that for a very small output buffer, we emit at most
       * one empty block.
       */
    }
    if (bstate === BS_BLOCK_DONE) {
      if (flush === Z_PARTIAL_FLUSH) {
        trees._tr_align(s);
      }
      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */

        trees._tr_stored_block(s, 0, 0, false);
        /* For a full flush, this empty block will be recognized
         * as a special marker by inflate_sync().
         */
        if (flush === Z_FULL_FLUSH) {
          /*** CLEAR_HASH(s); ***/             /* forget history */
          zero(s.head); // Fill with NIL (= 0);

          if (s.lookahead === 0) {
            s.strstart = 0;
            s.block_start = 0;
            s.insert = 0;
          }
        }
      }
      flush_pending(strm);
      if (strm.avail_out === 0) {
        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
        return Z_OK;
      }
    }
  }
  //Assert(strm->avail_out > 0, "bug2");
  //if (strm.avail_out <= 0) { throw new Error("bug2");}

  if (flush !== Z_FINISH) { return Z_OK; }
  if (s.wrap <= 0) { return Z_STREAM_END; }

  /* Write the trailer */
  if (s.wrap === 2) {
    put_byte(s, strm.adler & 0xff);
    put_byte(s, (strm.adler >> 8) & 0xff);
    put_byte(s, (strm.adler >> 16) & 0xff);
    put_byte(s, (strm.adler >> 24) & 0xff);
    put_byte(s, strm.total_in & 0xff);
    put_byte(s, (strm.total_in >> 8) & 0xff);
    put_byte(s, (strm.total_in >> 16) & 0xff);
    put_byte(s, (strm.total_in >> 24) & 0xff);
  }
  else
  {
    putShortMSB(s, strm.adler >>> 16);
    putShortMSB(s, strm.adler & 0xffff);
  }

  flush_pending(strm);
  /* If avail_out is zero, the application will call deflate again
   * to flush the rest.
   */
  if (s.wrap > 0) { s.wrap = -s.wrap; }
  /* write the trailer only once! */
  return s.pending !== 0 ? Z_OK : Z_STREAM_END;
}

function deflateEnd(strm) {
  var status;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  status = strm.state.status;
  if (status !== INIT_STATE &&
    status !== EXTRA_STATE &&
    status !== NAME_STATE &&
    status !== COMMENT_STATE &&
    status !== HCRC_STATE &&
    status !== BUSY_STATE &&
    status !== FINISH_STATE
  ) {
    return err(strm, Z_STREAM_ERROR);
  }

  strm.state = null;

  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;
}


/* =========================================================================
 * Initializes the compression dictionary from the given byte
 * sequence without producing any compressed output.
 */
function deflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var s;
  var str, n;
  var wrap;
  var avail;
  var next;
  var input;
  var tmpDict;

  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {
    return Z_STREAM_ERROR;
  }

  s = strm.state;
  wrap = s.wrap;

  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
    return Z_STREAM_ERROR;
  }

  /* when using zlib wrappers, compute Adler-32 for provided dictionary */
  if (wrap === 1) {
    /* adler32(strm->adler, dictionary, dictLength); */
    strm.adler = adler32(strm.adler, dictionary, dictLength, 0);
  }

  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */

  /* if dictionary would fill window, just replace the history */
  if (dictLength >= s.w_size) {
    if (wrap === 0) {            /* already empty otherwise */
      /*** CLEAR_HASH(s); ***/
      zero(s.head); // Fill with NIL (= 0);
      s.strstart = 0;
      s.block_start = 0;
      s.insert = 0;
    }
    /* use the tail */
    // dictionary = dictionary.slice(dictLength - s.w_size);
    tmpDict = new utils.Buf8(s.w_size);
    utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);
    dictionary = tmpDict;
    dictLength = s.w_size;
  }
  /* insert dictionary into window and hash */
  avail = strm.avail_in;
  next = strm.next_in;
  input = strm.input;
  strm.avail_in = dictLength;
  strm.next_in = 0;
  strm.input = dictionary;
  fill_window(s);
  while (s.lookahead >= MIN_MATCH) {
    str = s.strstart;
    n = s.lookahead - (MIN_MATCH - 1);
    do {
      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;

      s.prev[str & s.w_mask] = s.head[s.ins_h];

      s.head[s.ins_h] = str;
      str++;
    } while (--n);
    s.strstart = str;
    s.lookahead = MIN_MATCH - 1;
    fill_window(s);
  }
  s.strstart += s.lookahead;
  s.block_start = s.strstart;
  s.insert = s.lookahead;
  s.lookahead = 0;
  s.match_length = s.prev_length = MIN_MATCH - 1;
  s.match_available = 0;
  strm.next_in = next;
  strm.input = input;
  strm.avail_in = avail;
  s.wrap = wrap;
  return Z_OK;
}


exports.deflateInit = deflateInit;
exports.deflateInit2 = deflateInit2;
exports.deflateReset = deflateReset;
exports.deflateResetKeep = deflateResetKeep;
exports.deflateSetHeader = deflateSetHeader;
exports.deflate = deflate;
exports.deflateEnd = deflateEnd;
exports.deflateSetDictionary = deflateSetDictionary;
exports.deflateInfo = 'pako deflate (from Nodeca project)';

/* Not implemented
exports.deflateBound = deflateBound;
exports.deflateCopy = deflateCopy;
exports.deflateParams = deflateParams;
exports.deflatePending = deflatePending;
exports.deflatePrime = deflatePrime;
exports.deflateTune = deflateTune;
*/

},{"../utils/common":451,"./adler32":452,"./crc32":454,"./messages":459,"./trees":460}],456:[function(require,module,exports){
'use strict';

// See state defs from inflate.js
var BAD = 30;       /* got a data error -- remain here until reset */
var TYPE = 12;      /* i: waiting for type bits, including last-flag bit */

/*
   Decode literal, length, and distance codes and write out the resulting
   literal and match bytes until either not enough input or output is
   available, an end-of-block is encountered, or a data error is encountered.
   When large enough input and output buffers are supplied to inflate(), for
   example, a 16K input buffer and a 64K output buffer, more than 95% of the
   inflate execution time is spent in this routine.

   Entry assumptions:

        state.mode === LEN
        strm.avail_in >= 6
        strm.avail_out >= 258
        start >= strm.avail_out
        state.bits < 8

   On return, state.mode is one of:

        LEN -- ran out of enough output space or enough available input
        TYPE -- reached end of block code, inflate() to interpret next block
        BAD -- error in block data

   Notes:

    - The maximum input bits used by a length/distance pair is 15 bits for the
      length code, 5 bits for the length extra, 15 bits for the distance code,
      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
      Therefore if strm.avail_in >= 6, then there is enough input to avoid
      checking for available input while decoding.

    - The maximum bytes that a single length/distance pair can output is 258
      bytes, which is the maximum length that can be coded.  inflate_fast()
      requires strm.avail_out >= 258 for each loop to avoid checking for
      output space.
 */
module.exports = function inflate_fast(strm, start) {
  var state;
  var _in;                    /* local strm.input */
  var last;                   /* have enough input while in < last */
  var _out;                   /* local strm.output */
  var beg;                    /* inflate()'s initial strm.output */
  var end;                    /* while out < end, enough space available */
//#ifdef INFLATE_STRICT
  var dmax;                   /* maximum distance from zlib header */
//#endif
  var wsize;                  /* window size or zero if not using window */
  var whave;                  /* valid bytes in the window */
  var wnext;                  /* window write index */
  // Use `s_window` instead `window`, avoid conflict with instrumentation tools
  var s_window;               /* allocated sliding window, if wsize != 0 */
  var hold;                   /* local strm.hold */
  var bits;                   /* local strm.bits */
  var lcode;                  /* local strm.lencode */
  var dcode;                  /* local strm.distcode */
  var lmask;                  /* mask for first level of length codes */
  var dmask;                  /* mask for first level of distance codes */
  var here;                   /* retrieved table entry */
  var op;                     /* code bits, operation, extra bits, or */
                              /*  window position, window bytes to copy */
  var len;                    /* match length, unused bytes */
  var dist;                   /* match distance */
  var from;                   /* where to copy match from */
  var from_source;


  var input, output; // JS specific, because we have no pointers

  /* copy state to local variables */
  state = strm.state;
  //here = state.here;
  _in = strm.next_in;
  input = strm.input;
  last = _in + (strm.avail_in - 5);
  _out = strm.next_out;
  output = strm.output;
  beg = _out - (start - strm.avail_out);
  end = _out + (strm.avail_out - 257);
//#ifdef INFLATE_STRICT
  dmax = state.dmax;
//#endif
  wsize = state.wsize;
  whave = state.whave;
  wnext = state.wnext;
  s_window = state.window;
  hold = state.hold;
  bits = state.bits;
  lcode = state.lencode;
  dcode = state.distcode;
  lmask = (1 << state.lenbits) - 1;
  dmask = (1 << state.distbits) - 1;


  /* decode literals and length/distances until end-of-block or not enough
     input data or output space */

  top:
  do {
    if (bits < 15) {
      hold += input[_in++] << bits;
      bits += 8;
      hold += input[_in++] << bits;
      bits += 8;
    }

    here = lcode[hold & lmask];

    dolen:
    for (;;) { // Goto emulation
      op = here >>> 24/*here.bits*/;
      hold >>>= op;
      bits -= op;
      op = (here >>> 16) & 0xff/*here.op*/;
      if (op === 0) {                          /* literal */
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        output[_out++] = here & 0xffff/*here.val*/;
      }
      else if (op & 16) {                     /* length base */
        len = here & 0xffff/*here.val*/;
        op &= 15;                           /* number of extra bits */
        if (op) {
          if (bits < op) {
            hold += input[_in++] << bits;
            bits += 8;
          }
          len += hold & ((1 << op) - 1);
          hold >>>= op;
          bits -= op;
        }
        //Tracevv((stderr, "inflate:         length %u\n", len));
        if (bits < 15) {
          hold += input[_in++] << bits;
          bits += 8;
          hold += input[_in++] << bits;
          bits += 8;
        }
        here = dcode[hold & dmask];

        dodist:
        for (;;) { // goto emulation
          op = here >>> 24/*here.bits*/;
          hold >>>= op;
          bits -= op;
          op = (here >>> 16) & 0xff/*here.op*/;

          if (op & 16) {                      /* distance base */
            dist = here & 0xffff/*here.val*/;
            op &= 15;                       /* number of extra bits */
            if (bits < op) {
              hold += input[_in++] << bits;
              bits += 8;
              if (bits < op) {
                hold += input[_in++] << bits;
                bits += 8;
              }
            }
            dist += hold & ((1 << op) - 1);
//#ifdef INFLATE_STRICT
            if (dist > dmax) {
              strm.msg = 'invalid distance too far back';
              state.mode = BAD;
              break top;
            }
//#endif
            hold >>>= op;
            bits -= op;
            //Tracevv((stderr, "inflate:         distance %u\n", dist));
            op = _out - beg;                /* max distance in output */
            if (dist > op) {                /* see if copy from window */
              op = dist - op;               /* distance back in window */
              if (op > whave) {
                if (state.sane) {
                  strm.msg = 'invalid distance too far back';
                  state.mode = BAD;
                  break top;
                }

// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//                if (len <= op - whave) {
//                  do {
//                    output[_out++] = 0;
//                  } while (--len);
//                  continue top;
//                }
//                len -= op - whave;
//                do {
//                  output[_out++] = 0;
//                } while (--op > whave);
//                if (op === 0) {
//                  from = _out - dist;
//                  do {
//                    output[_out++] = output[from++];
//                  } while (--len);
//                  continue top;
//                }
//#endif
              }
              from = 0; // window index
              from_source = s_window;
              if (wnext === 0) {           /* very common case */
                from += wsize - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              else if (wnext < op) {      /* wrap around window */
                from += wsize + wnext - op;
                op -= wnext;
                if (op < len) {         /* some from end of window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = 0;
                  if (wnext < len) {  /* some from start of window */
                    op = wnext;
                    len -= op;
                    do {
                      output[_out++] = s_window[from++];
                    } while (--op);
                    from = _out - dist;      /* rest from output */
                    from_source = output;
                  }
                }
              }
              else {                      /* contiguous in window */
                from += wnext - op;
                if (op < len) {         /* some from window */
                  len -= op;
                  do {
                    output[_out++] = s_window[from++];
                  } while (--op);
                  from = _out - dist;  /* rest from output */
                  from_source = output;
                }
              }
              while (len > 2) {
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                output[_out++] = from_source[from++];
                len -= 3;
              }
              if (len) {
                output[_out++] = from_source[from++];
                if (len > 1) {
                  output[_out++] = from_source[from++];
                }
              }
            }
            else {
              from = _out - dist;          /* copy direct from output */
              do {                        /* minimum length is three */
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                output[_out++] = output[from++];
                len -= 3;
              } while (len > 2);
              if (len) {
                output[_out++] = output[from++];
                if (len > 1) {
                  output[_out++] = output[from++];
                }
              }
            }
          }
          else if ((op & 64) === 0) {          /* 2nd level distance code */
            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
            continue dodist;
          }
          else {
            strm.msg = 'invalid distance code';
            state.mode = BAD;
            break top;
          }

          break; // need to emulate goto via "continue"
        }
      }
      else if ((op & 64) === 0) {              /* 2nd level length code */
        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
        continue dolen;
      }
      else if (op & 32) {                     /* end-of-block */
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.mode = TYPE;
        break top;
      }
      else {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break top;
      }

      break; // need to emulate goto via "continue"
    }
  } while (_in < last && _out < end);

  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
  len = bits >> 3;
  _in -= len;
  bits -= len << 3;
  hold &= (1 << bits) - 1;

  /* update state and return */
  strm.next_in = _in;
  strm.next_out = _out;
  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
  state.hold = hold;
  state.bits = bits;
  return;
};

},{}],457:[function(require,module,exports){
'use strict';


var utils         = require('../utils/common');
var adler32       = require('./adler32');
var crc32         = require('./crc32');
var inflate_fast  = require('./inffast');
var inflate_table = require('./inftrees');

var CODES = 0;
var LENS = 1;
var DISTS = 2;

/* Public constants ==========================================================*/
/* ===========================================================================*/


/* Allowed flush values; see deflate() and inflate() below for details */
//var Z_NO_FLUSH      = 0;
//var Z_PARTIAL_FLUSH = 1;
//var Z_SYNC_FLUSH    = 2;
//var Z_FULL_FLUSH    = 3;
var Z_FINISH        = 4;
var Z_BLOCK         = 5;
var Z_TREES         = 6;


/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */
var Z_OK            = 0;
var Z_STREAM_END    = 1;
var Z_NEED_DICT     = 2;
//var Z_ERRNO         = -1;
var Z_STREAM_ERROR  = -2;
var Z_DATA_ERROR    = -3;
var Z_MEM_ERROR     = -4;
var Z_BUF_ERROR     = -5;
//var Z_VERSION_ERROR = -6;

/* The deflate compression method */
var Z_DEFLATED  = 8;


/* STATES ====================================================================*/
/* ===========================================================================*/


var    HEAD = 1;       /* i: waiting for magic header */
var    FLAGS = 2;      /* i: waiting for method and flags (gzip) */
var    TIME = 3;       /* i: waiting for modification time (gzip) */
var    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */
var    EXLEN = 5;      /* i: waiting for extra length (gzip) */
var    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */
var    NAME = 7;       /* i: waiting for end of file name (gzip) */
var    COMMENT = 8;    /* i: waiting for end of comment (gzip) */
var    HCRC = 9;       /* i: waiting for header crc (gzip) */
var    DICTID = 10;    /* i: waiting for dictionary check value */
var    DICT = 11;      /* waiting for inflateSetDictionary() call */
var        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */
var        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */
var        STORED = 14;    /* i: waiting for stored size (length and complement) */
var        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */
var        COPY = 16;      /* i/o: waiting for input or output to copy stored block */
var        TABLE = 17;     /* i: waiting for dynamic block table lengths */
var        LENLENS = 18;   /* i: waiting for code length code lengths */
var        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */
var            LEN_ = 20;      /* i: same as LEN below, but only first time in */
var            LEN = 21;       /* i: waiting for length/lit/eob code */
var            LENEXT = 22;    /* i: waiting for length extra bits */
var            DIST = 23;      /* i: waiting for distance code */
var            DISTEXT = 24;   /* i: waiting for distance extra bits */
var            MATCH = 25;     /* o: waiting for output space to copy string */
var            LIT = 26;       /* o: waiting for output space to write literal */
var    CHECK = 27;     /* i: waiting for 32-bit check value */
var    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */
var    DONE = 29;      /* finished check, done -- remain here until reset */
var    BAD = 30;       /* got a data error -- remain here until reset */
var    MEM = 31;       /* got an inflate() memory error -- remain here until reset */
var    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */

/* ===========================================================================*/



var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);

var MAX_WBITS = 15;
/* 32K LZ77 window */
var DEF_WBITS = MAX_WBITS;


function zswap32(q) {
  return  (((q >>> 24) & 0xff) +
          ((q >>> 8) & 0xff00) +
          ((q & 0xff00) << 8) +
          ((q & 0xff) << 24));
}


function InflateState() {
  this.mode = 0;             /* current inflate mode */
  this.last = false;          /* true if processing last block */
  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
  this.havedict = false;      /* true if dictionary provided */
  this.flags = 0;             /* gzip header method and flags (0 if zlib) */
  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
  this.check = 0;             /* protected copy of check value */
  this.total = 0;             /* protected copy of output count */
  // TODO: may be {}
  this.head = null;           /* where to save gzip header information */

  /* sliding window */
  this.wbits = 0;             /* log base 2 of requested window size */
  this.wsize = 0;             /* window size or zero if not using window */
  this.whave = 0;             /* valid bytes in the window */
  this.wnext = 0;             /* window write index */
  this.window = null;         /* allocated sliding window, if needed */

  /* bit accumulator */
  this.hold = 0;              /* input bit accumulator */
  this.bits = 0;              /* number of bits in "in" */

  /* for string and stored block copying */
  this.length = 0;            /* literal or length of data to copy */
  this.offset = 0;            /* distance back to copy string from */

  /* for table and code decoding */
  this.extra = 0;             /* extra bits needed */

  /* fixed and dynamic code tables */
  this.lencode = null;          /* starting table for length/literal codes */
  this.distcode = null;         /* starting table for distance codes */
  this.lenbits = 0;           /* index bits for lencode */
  this.distbits = 0;          /* index bits for distcode */

  /* dynamic table building */
  this.ncode = 0;             /* number of code length code lengths */
  this.nlen = 0;              /* number of length code lengths */
  this.ndist = 0;             /* number of distance code lengths */
  this.have = 0;              /* number of code lengths in lens[] */
  this.next = null;              /* next available space in codes[] */

  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */
  this.work = new utils.Buf16(288); /* work area for code table building */

  /*
   because we don't have pointers in js, we use lencode and distcode directly
   as buffers so we don't need codes
  */
  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */
  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
  this.sane = 0;                   /* if false, allow invalid distance too far */
  this.back = 0;                   /* bits back of last unprocessed length/lit */
  this.was = 0;                    /* initial length of match */
}

function inflateResetKeep(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  strm.total_in = strm.total_out = state.total = 0;
  strm.msg = ''; /*Z_NULL*/
  if (state.wrap) {       /* to support ill-conceived Java test suite */
    strm.adler = state.wrap & 1;
  }
  state.mode = HEAD;
  state.last = 0;
  state.havedict = 0;
  state.dmax = 32768;
  state.head = null/*Z_NULL*/;
  state.hold = 0;
  state.bits = 0;
  //state.lencode = state.distcode = state.next = state.codes;
  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);
  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);

  state.sane = 1;
  state.back = -1;
  //Tracev((stderr, "inflate: reset\n"));
  return Z_OK;
}

function inflateReset(strm) {
  var state;

  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  state.wsize = 0;
  state.whave = 0;
  state.wnext = 0;
  return inflateResetKeep(strm);

}

function inflateReset2(strm, windowBits) {
  var wrap;
  var state;

  /* get the state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;

  /* extract wrap request from windowBits parameter */
  if (windowBits < 0) {
    wrap = 0;
    windowBits = -windowBits;
  }
  else {
    wrap = (windowBits >> 4) + 1;
    if (windowBits < 48) {
      windowBits &= 15;
    }
  }

  /* set number of window bits, free window if different */
  if (windowBits && (windowBits < 8 || windowBits > 15)) {
    return Z_STREAM_ERROR;
  }
  if (state.window !== null && state.wbits !== windowBits) {
    state.window = null;
  }

  /* update state and reset the rest of it */
  state.wrap = wrap;
  state.wbits = windowBits;
  return inflateReset(strm);
}

function inflateInit2(strm, windowBits) {
  var ret;
  var state;

  if (!strm) { return Z_STREAM_ERROR; }
  //strm.msg = Z_NULL;                 /* in case we return an error */

  state = new InflateState();

  //if (state === Z_NULL) return Z_MEM_ERROR;
  //Tracev((stderr, "inflate: allocated\n"));
  strm.state = state;
  state.window = null/*Z_NULL*/;
  ret = inflateReset2(strm, windowBits);
  if (ret !== Z_OK) {
    strm.state = null/*Z_NULL*/;
  }
  return ret;
}

function inflateInit(strm) {
  return inflateInit2(strm, DEF_WBITS);
}


/*
 Return state with length and distance decoding tables and index sizes set to
 fixed code decoding.  Normally this returns fixed tables from inffixed.h.
 If BUILDFIXED is defined, then instead this routine builds the tables the
 first time it's called, and returns those tables the first time and
 thereafter.  This reduces the size of the code by about 2K bytes, in
 exchange for a little execution time.  However, BUILDFIXED should not be
 used for threaded applications, since the rewriting of the tables and virgin
 may not be thread-safe.
 */
var virgin = true;

var lenfix, distfix; // We have no pointers in JS, so keep tables separate

function fixedtables(state) {
  /* build fixed huffman tables if first call (may not be thread safe) */
  if (virgin) {
    var sym;

    lenfix = new utils.Buf32(512);
    distfix = new utils.Buf32(32);

    /* literal/length table */
    sym = 0;
    while (sym < 144) { state.lens[sym++] = 8; }
    while (sym < 256) { state.lens[sym++] = 9; }
    while (sym < 280) { state.lens[sym++] = 7; }
    while (sym < 288) { state.lens[sym++] = 8; }

    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });

    /* distance table */
    sym = 0;
    while (sym < 32) { state.lens[sym++] = 5; }

    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });

    /* do this just once */
    virgin = false;
  }

  state.lencode = lenfix;
  state.lenbits = 9;
  state.distcode = distfix;
  state.distbits = 5;
}


/*
 Update the window with the last wsize (normally 32K) bytes written before
 returning.  If window does not exist yet, create it.  This is only called
 when a window is already in use, or when output has been written during this
 inflate call, but the end of the deflate stream has not been reached yet.
 It is also called to create a window for dictionary data when a dictionary
 is loaded.

 Providing output buffers larger than 32K to inflate() should provide a speed
 advantage, since only the last 32K of output is copied to the sliding window
 upon return from inflate(), and since all distances after the first 32K of
 output will fall in the output data, making match copies simpler and faster.
 The advantage may be dependent on the size of the processor's data caches.
 */
function updatewindow(strm, src, end, copy) {
  var dist;
  var state = strm.state;

  /* if it hasn't been done already, allocate space for the window */
  if (state.window === null) {
    state.wsize = 1 << state.wbits;
    state.wnext = 0;
    state.whave = 0;

    state.window = new utils.Buf8(state.wsize);
  }

  /* copy state->wsize or less output bytes into the circular window */
  if (copy >= state.wsize) {
    utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);
    state.wnext = 0;
    state.whave = state.wsize;
  }
  else {
    dist = state.wsize - state.wnext;
    if (dist > copy) {
      dist = copy;
    }
    //zmemcpy(state->window + state->wnext, end - copy, dist);
    utils.arraySet(state.window, src, end - copy, dist, state.wnext);
    copy -= dist;
    if (copy) {
      //zmemcpy(state->window, end - copy, copy);
      utils.arraySet(state.window, src, end - copy, copy, 0);
      state.wnext = copy;
      state.whave = state.wsize;
    }
    else {
      state.wnext += dist;
      if (state.wnext === state.wsize) { state.wnext = 0; }
      if (state.whave < state.wsize) { state.whave += dist; }
    }
  }
  return 0;
}

function inflate(strm, flush) {
  var state;
  var input, output;          // input/output buffers
  var next;                   /* next input INDEX */
  var put;                    /* next output INDEX */
  var have, left;             /* available input and output */
  var hold;                   /* bit buffer */
  var bits;                   /* bits in bit buffer */
  var _in, _out;              /* save starting available input and output */
  var copy;                   /* number of stored or match bytes to copy */
  var from;                   /* where to copy match bytes from */
  var from_source;
  var here = 0;               /* current decoding table entry */
  var here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
  //var last;                   /* parent table entry */
  var last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
  var len;                    /* length to copy for repeats, bits to drop */
  var ret;                    /* return code */
  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */
  var opts;

  var n; // temporary var for NEED_BITS

  var order = /* permutation of code lengths */
    [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];


  if (!strm || !strm.state || !strm.output ||
      (!strm.input && strm.avail_in !== 0)) {
    return Z_STREAM_ERROR;
  }

  state = strm.state;
  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */


  //--- LOAD() ---
  put = strm.next_out;
  output = strm.output;
  left = strm.avail_out;
  next = strm.next_in;
  input = strm.input;
  have = strm.avail_in;
  hold = state.hold;
  bits = state.bits;
  //---

  _in = have;
  _out = left;
  ret = Z_OK;

  inf_leave: // goto emulation
  for (;;) {
    switch (state.mode) {
    case HEAD:
      if (state.wrap === 0) {
        state.mode = TYPEDO;
        break;
      }
      //=== NEEDBITS(16);
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
        state.check = 0/*crc32(0L, Z_NULL, 0)*/;
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//

        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        state.mode = FLAGS;
        break;
      }
      state.flags = 0;           /* expect zlib header */
      if (state.head) {
        state.head.done = false;
      }
      if (!(state.wrap & 1) ||   /* check if zlib header allowed */
        (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
        strm.msg = 'incorrect header check';
        state.mode = BAD;
        break;
      }
      if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {
        strm.msg = 'unknown compression method';
        state.mode = BAD;
        break;
      }
      //--- DROPBITS(4) ---//
      hold >>>= 4;
      bits -= 4;
      //---//
      len = (hold & 0x0f)/*BITS(4)*/ + 8;
      if (state.wbits === 0) {
        state.wbits = len;
      }
      else if (len > state.wbits) {
        strm.msg = 'invalid window size';
        state.mode = BAD;
        break;
      }
      state.dmax = 1 << len;
      //Tracev((stderr, "inflate:   zlib header ok\n"));
      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
      state.mode = hold & 0x200 ? DICTID : TYPE;
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      break;
    case FLAGS:
      //=== NEEDBITS(16); */
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.flags = hold;
      if ((state.flags & 0xff) !== Z_DEFLATED) {
        strm.msg = 'unknown compression method';
        state.mode = BAD;
        break;
      }
      if (state.flags & 0xe000) {
        strm.msg = 'unknown header flags set';
        state.mode = BAD;
        break;
      }
      if (state.head) {
        state.head.text = ((hold >> 8) & 1);
      }
      if (state.flags & 0x0200) {
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = TIME;
      /* falls through */
    case TIME:
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if (state.head) {
        state.head.time = hold;
      }
      if (state.flags & 0x0200) {
        //=== CRC4(state.check, hold)
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        hbuf[2] = (hold >>> 16) & 0xff;
        hbuf[3] = (hold >>> 24) & 0xff;
        state.check = crc32(state.check, hbuf, 4, 0);
        //===
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = OS;
      /* falls through */
    case OS:
      //=== NEEDBITS(16); */
      while (bits < 16) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if (state.head) {
        state.head.xflags = (hold & 0xff);
        state.head.os = (hold >> 8);
      }
      if (state.flags & 0x0200) {
        //=== CRC2(state.check, hold);
        hbuf[0] = hold & 0xff;
        hbuf[1] = (hold >>> 8) & 0xff;
        state.check = crc32(state.check, hbuf, 2, 0);
        //===//
      }
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = EXLEN;
      /* falls through */
    case EXLEN:
      if (state.flags & 0x0400) {
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.length = hold;
        if (state.head) {
          state.head.extra_len = hold;
        }
        if (state.flags & 0x0200) {
          //=== CRC2(state.check, hold);
          hbuf[0] = hold & 0xff;
          hbuf[1] = (hold >>> 8) & 0xff;
          state.check = crc32(state.check, hbuf, 2, 0);
          //===//
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
      }
      else if (state.head) {
        state.head.extra = null/*Z_NULL*/;
      }
      state.mode = EXTRA;
      /* falls through */
    case EXTRA:
      if (state.flags & 0x0400) {
        copy = state.length;
        if (copy > have) { copy = have; }
        if (copy) {
          if (state.head) {
            len = state.head.extra_len - state.length;
            if (!state.head.extra) {
              // Use untyped array for more conveniend processing later
              state.head.extra = new Array(state.head.extra_len);
            }
            utils.arraySet(
              state.head.extra,
              input,
              next,
              // extra field is limited to 65536 bytes
              // - no need for additional size check
              copy,
              /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
              len
            );
            //zmemcpy(state.head.extra + len, next,
            //        len + copy > state.head.extra_max ?
            //        state.head.extra_max - len : copy);
          }
          if (state.flags & 0x0200) {
            state.check = crc32(state.check, input, copy, next);
          }
          have -= copy;
          next += copy;
          state.length -= copy;
        }
        if (state.length) { break inf_leave; }
      }
      state.length = 0;
      state.mode = NAME;
      /* falls through */
    case NAME:
      if (state.flags & 0x0800) {
        if (have === 0) { break inf_leave; }
        copy = 0;
        do {
          // TODO: 2 or 1 bytes?
          len = input[next + copy++];
          /* use constant limit because in js we should not preallocate memory */
          if (state.head && len &&
              (state.length < 65536 /*state.head.name_max*/)) {
            state.head.name += String.fromCharCode(len);
          }
        } while (len && copy < have);

        if (state.flags & 0x0200) {
          state.check = crc32(state.check, input, copy, next);
        }
        have -= copy;
        next += copy;
        if (len) { break inf_leave; }
      }
      else if (state.head) {
        state.head.name = null;
      }
      state.length = 0;
      state.mode = COMMENT;
      /* falls through */
    case COMMENT:
      if (state.flags & 0x1000) {
        if (have === 0) { break inf_leave; }
        copy = 0;
        do {
          len = input[next + copy++];
          /* use constant limit because in js we should not preallocate memory */
          if (state.head && len &&
              (state.length < 65536 /*state.head.comm_max*/)) {
            state.head.comment += String.fromCharCode(len);
          }
        } while (len && copy < have);
        if (state.flags & 0x0200) {
          state.check = crc32(state.check, input, copy, next);
        }
        have -= copy;
        next += copy;
        if (len) { break inf_leave; }
      }
      else if (state.head) {
        state.head.comment = null;
      }
      state.mode = HCRC;
      /* falls through */
    case HCRC:
      if (state.flags & 0x0200) {
        //=== NEEDBITS(16); */
        while (bits < 16) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (hold !== (state.check & 0xffff)) {
          strm.msg = 'header crc mismatch';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
      }
      if (state.head) {
        state.head.hcrc = ((state.flags >> 9) & 1);
        state.head.done = true;
      }
      strm.adler = state.check = 0;
      state.mode = TYPE;
      break;
    case DICTID:
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      strm.adler = state.check = zswap32(hold);
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = DICT;
      /* falls through */
    case DICT:
      if (state.havedict === 0) {
        //--- RESTORE() ---
        strm.next_out = put;
        strm.avail_out = left;
        strm.next_in = next;
        strm.avail_in = have;
        state.hold = hold;
        state.bits = bits;
        //---
        return Z_NEED_DICT;
      }
      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
      state.mode = TYPE;
      /* falls through */
    case TYPE:
      if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case TYPEDO:
      if (state.last) {
        //--- BYTEBITS() ---//
        hold >>>= bits & 7;
        bits -= bits & 7;
        //---//
        state.mode = CHECK;
        break;
      }
      //=== NEEDBITS(3); */
      while (bits < 3) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.last = (hold & 0x01)/*BITS(1)*/;
      //--- DROPBITS(1) ---//
      hold >>>= 1;
      bits -= 1;
      //---//

      switch ((hold & 0x03)/*BITS(2)*/) {
      case 0:                             /* stored block */
        //Tracev((stderr, "inflate:     stored block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = STORED;
        break;
      case 1:                             /* fixed block */
        fixedtables(state);
        //Tracev((stderr, "inflate:     fixed codes block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = LEN_;             /* decode codes */
        if (flush === Z_TREES) {
          //--- DROPBITS(2) ---//
          hold >>>= 2;
          bits -= 2;
          //---//
          break inf_leave;
        }
        break;
      case 2:                             /* dynamic block */
        //Tracev((stderr, "inflate:     dynamic codes block%s\n",
        //        state.last ? " (last)" : ""));
        state.mode = TABLE;
        break;
      case 3:
        strm.msg = 'invalid block type';
        state.mode = BAD;
      }
      //--- DROPBITS(2) ---//
      hold >>>= 2;
      bits -= 2;
      //---//
      break;
    case STORED:
      //--- BYTEBITS() ---// /* go to byte boundary */
      hold >>>= bits & 7;
      bits -= bits & 7;
      //---//
      //=== NEEDBITS(32); */
      while (bits < 32) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
        strm.msg = 'invalid stored block lengths';
        state.mode = BAD;
        break;
      }
      state.length = hold & 0xffff;
      //Tracev((stderr, "inflate:       stored length %u\n",
      //        state.length));
      //=== INITBITS();
      hold = 0;
      bits = 0;
      //===//
      state.mode = COPY_;
      if (flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case COPY_:
      state.mode = COPY;
      /* falls through */
    case COPY:
      copy = state.length;
      if (copy) {
        if (copy > have) { copy = have; }
        if (copy > left) { copy = left; }
        if (copy === 0) { break inf_leave; }
        //--- zmemcpy(put, next, copy); ---
        utils.arraySet(output, input, next, copy, put);
        //---//
        have -= copy;
        next += copy;
        left -= copy;
        put += copy;
        state.length -= copy;
        break;
      }
      //Tracev((stderr, "inflate:       stored end\n"));
      state.mode = TYPE;
      break;
    case TABLE:
      //=== NEEDBITS(14); */
      while (bits < 14) {
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
      }
      //===//
      state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
      //--- DROPBITS(5) ---//
      hold >>>= 5;
      bits -= 5;
      //---//
      state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
      //--- DROPBITS(5) ---//
      hold >>>= 5;
      bits -= 5;
      //---//
      state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
      //--- DROPBITS(4) ---//
      hold >>>= 4;
      bits -= 4;
      //---//
//#ifndef PKZIP_BUG_WORKAROUND
      if (state.nlen > 286 || state.ndist > 30) {
        strm.msg = 'too many length or distance symbols';
        state.mode = BAD;
        break;
      }
//#endif
      //Tracev((stderr, "inflate:       table sizes ok\n"));
      state.have = 0;
      state.mode = LENLENS;
      /* falls through */
    case LENLENS:
      while (state.have < state.ncode) {
        //=== NEEDBITS(3);
        while (bits < 3) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
        //--- DROPBITS(3) ---//
        hold >>>= 3;
        bits -= 3;
        //---//
      }
      while (state.have < 19) {
        state.lens[order[state.have++]] = 0;
      }
      // We have separate tables & no pointers. 2 commented lines below not needed.
      //state.next = state.codes;
      //state.lencode = state.next;
      // Switch to use dynamic table
      state.lencode = state.lendyn;
      state.lenbits = 7;

      opts = { bits: state.lenbits };
      ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
      state.lenbits = opts.bits;

      if (ret) {
        strm.msg = 'invalid code lengths set';
        state.mode = BAD;
        break;
      }
      //Tracev((stderr, "inflate:       code lengths ok\n"));
      state.have = 0;
      state.mode = CODELENS;
      /* falls through */
    case CODELENS:
      while (state.have < state.nlen + state.ndist) {
        for (;;) {
          here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        if (here_val < 16) {
          //--- DROPBITS(here.bits) ---//
          hold >>>= here_bits;
          bits -= here_bits;
          //---//
          state.lens[state.have++] = here_val;
        }
        else {
          if (here_val === 16) {
            //=== NEEDBITS(here.bits + 2);
            n = here_bits + 2;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            if (state.have === 0) {
              strm.msg = 'invalid bit length repeat';
              state.mode = BAD;
              break;
            }
            len = state.lens[state.have - 1];
            copy = 3 + (hold & 0x03);//BITS(2);
            //--- DROPBITS(2) ---//
            hold >>>= 2;
            bits -= 2;
            //---//
          }
          else if (here_val === 17) {
            //=== NEEDBITS(here.bits + 3);
            n = here_bits + 3;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            len = 0;
            copy = 3 + (hold & 0x07);//BITS(3);
            //--- DROPBITS(3) ---//
            hold >>>= 3;
            bits -= 3;
            //---//
          }
          else {
            //=== NEEDBITS(here.bits + 7);
            n = here_bits + 7;
            while (bits < n) {
              if (have === 0) { break inf_leave; }
              have--;
              hold += input[next++] << bits;
              bits += 8;
            }
            //===//
            //--- DROPBITS(here.bits) ---//
            hold >>>= here_bits;
            bits -= here_bits;
            //---//
            len = 0;
            copy = 11 + (hold & 0x7f);//BITS(7);
            //--- DROPBITS(7) ---//
            hold >>>= 7;
            bits -= 7;
            //---//
          }
          if (state.have + copy > state.nlen + state.ndist) {
            strm.msg = 'invalid bit length repeat';
            state.mode = BAD;
            break;
          }
          while (copy--) {
            state.lens[state.have++] = len;
          }
        }
      }

      /* handle error breaks in while */
      if (state.mode === BAD) { break; }

      /* check for end-of-block code (better have one) */
      if (state.lens[256] === 0) {
        strm.msg = 'invalid code -- missing end-of-block';
        state.mode = BAD;
        break;
      }

      /* build code tables -- note: do not change the lenbits or distbits
         values here (9 and 6) without reading the comments in inftrees.h
         concerning the ENOUGH constants, which depend on those values */
      state.lenbits = 9;

      opts = { bits: state.lenbits };
      ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
      // We have separate tables & no pointers. 2 commented lines below not needed.
      // state.next_index = opts.table_index;
      state.lenbits = opts.bits;
      // state.lencode = state.next;

      if (ret) {
        strm.msg = 'invalid literal/lengths set';
        state.mode = BAD;
        break;
      }

      state.distbits = 6;
      //state.distcode.copy(state.codes);
      // Switch to use dynamic table
      state.distcode = state.distdyn;
      opts = { bits: state.distbits };
      ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
      // We have separate tables & no pointers. 2 commented lines below not needed.
      // state.next_index = opts.table_index;
      state.distbits = opts.bits;
      // state.distcode = state.next;

      if (ret) {
        strm.msg = 'invalid distances set';
        state.mode = BAD;
        break;
      }
      //Tracev((stderr, 'inflate:       codes ok\n'));
      state.mode = LEN_;
      if (flush === Z_TREES) { break inf_leave; }
      /* falls through */
    case LEN_:
      state.mode = LEN;
      /* falls through */
    case LEN:
      if (have >= 6 && left >= 258) {
        //--- RESTORE() ---
        strm.next_out = put;
        strm.avail_out = left;
        strm.next_in = next;
        strm.avail_in = have;
        state.hold = hold;
        state.bits = bits;
        //---
        inflate_fast(strm, _out);
        //--- LOAD() ---
        put = strm.next_out;
        output = strm.output;
        left = strm.avail_out;
        next = strm.next_in;
        input = strm.input;
        have = strm.avail_in;
        hold = state.hold;
        bits = state.bits;
        //---

        if (state.mode === TYPE) {
          state.back = -1;
        }
        break;
      }
      state.back = 0;
      for (;;) {
        here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/
        here_bits = here >>> 24;
        here_op = (here >>> 16) & 0xff;
        here_val = here & 0xffff;

        if (here_bits <= bits) { break; }
        //--- PULLBYTE() ---//
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
        //---//
      }
      if (here_op && (here_op & 0xf0) === 0) {
        last_bits = here_bits;
        last_op = here_op;
        last_val = here_val;
        for (;;) {
          here = state.lencode[last_val +
                  ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((last_bits + here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        //--- DROPBITS(last.bits) ---//
        hold >>>= last_bits;
        bits -= last_bits;
        //---//
        state.back += last_bits;
      }
      //--- DROPBITS(here.bits) ---//
      hold >>>= here_bits;
      bits -= here_bits;
      //---//
      state.back += here_bits;
      state.length = here_val;
      if (here_op === 0) {
        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
        //        "inflate:         literal '%c'\n" :
        //        "inflate:         literal 0x%02x\n", here.val));
        state.mode = LIT;
        break;
      }
      if (here_op & 32) {
        //Tracevv((stderr, "inflate:         end of block\n"));
        state.back = -1;
        state.mode = TYPE;
        break;
      }
      if (here_op & 64) {
        strm.msg = 'invalid literal/length code';
        state.mode = BAD;
        break;
      }
      state.extra = here_op & 15;
      state.mode = LENEXT;
      /* falls through */
    case LENEXT:
      if (state.extra) {
        //=== NEEDBITS(state.extra);
        n = state.extra;
        while (bits < n) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
        //--- DROPBITS(state.extra) ---//
        hold >>>= state.extra;
        bits -= state.extra;
        //---//
        state.back += state.extra;
      }
      //Tracevv((stderr, "inflate:         length %u\n", state.length));
      state.was = state.length;
      state.mode = DIST;
      /* falls through */
    case DIST:
      for (;;) {
        here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/
        here_bits = here >>> 24;
        here_op = (here >>> 16) & 0xff;
        here_val = here & 0xffff;

        if ((here_bits) <= bits) { break; }
        //--- PULLBYTE() ---//
        if (have === 0) { break inf_leave; }
        have--;
        hold += input[next++] << bits;
        bits += 8;
        //---//
      }
      if ((here_op & 0xf0) === 0) {
        last_bits = here_bits;
        last_op = here_op;
        last_val = here_val;
        for (;;) {
          here = state.distcode[last_val +
                  ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
          here_bits = here >>> 24;
          here_op = (here >>> 16) & 0xff;
          here_val = here & 0xffff;

          if ((last_bits + here_bits) <= bits) { break; }
          //--- PULLBYTE() ---//
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
          //---//
        }
        //--- DROPBITS(last.bits) ---//
        hold >>>= last_bits;
        bits -= last_bits;
        //---//
        state.back += last_bits;
      }
      //--- DROPBITS(here.bits) ---//
      hold >>>= here_bits;
      bits -= here_bits;
      //---//
      state.back += here_bits;
      if (here_op & 64) {
        strm.msg = 'invalid distance code';
        state.mode = BAD;
        break;
      }
      state.offset = here_val;
      state.extra = (here_op) & 15;
      state.mode = DISTEXT;
      /* falls through */
    case DISTEXT:
      if (state.extra) {
        //=== NEEDBITS(state.extra);
        n = state.extra;
        while (bits < n) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
        //--- DROPBITS(state.extra) ---//
        hold >>>= state.extra;
        bits -= state.extra;
        //---//
        state.back += state.extra;
      }
//#ifdef INFLATE_STRICT
      if (state.offset > state.dmax) {
        strm.msg = 'invalid distance too far back';
        state.mode = BAD;
        break;
      }
//#endif
      //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
      state.mode = MATCH;
      /* falls through */
    case MATCH:
      if (left === 0) { break inf_leave; }
      copy = _out - left;
      if (state.offset > copy) {         /* copy from window */
        copy = state.offset - copy;
        if (copy > state.whave) {
          if (state.sane) {
            strm.msg = 'invalid distance too far back';
            state.mode = BAD;
            break;
          }
// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility
//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
//          Trace((stderr, "inflate.c too far\n"));
//          copy -= state.whave;
//          if (copy > state.length) { copy = state.length; }
//          if (copy > left) { copy = left; }
//          left -= copy;
//          state.length -= copy;
//          do {
//            output[put++] = 0;
//          } while (--copy);
//          if (state.length === 0) { state.mode = LEN; }
//          break;
//#endif
        }
        if (copy > state.wnext) {
          copy -= state.wnext;
          from = state.wsize - copy;
        }
        else {
          from = state.wnext - copy;
        }
        if (copy > state.length) { copy = state.length; }
        from_source = state.window;
      }
      else {                              /* copy from output */
        from_source = output;
        from = put - state.offset;
        copy = state.length;
      }
      if (copy > left) { copy = left; }
      left -= copy;
      state.length -= copy;
      do {
        output[put++] = from_source[from++];
      } while (--copy);
      if (state.length === 0) { state.mode = LEN; }
      break;
    case LIT:
      if (left === 0) { break inf_leave; }
      output[put++] = state.length;
      left--;
      state.mode = LEN;
      break;
    case CHECK:
      if (state.wrap) {
        //=== NEEDBITS(32);
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          // Use '|' insdead of '+' to make sure that result is signed
          hold |= input[next++] << bits;
          bits += 8;
        }
        //===//
        _out -= left;
        strm.total_out += _out;
        state.total += _out;
        if (_out) {
          strm.adler = state.check =
              /*UPDATE(state.check, put - _out, _out);*/
              (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));

        }
        _out = left;
        // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too
        if ((state.flags ? hold : zswap32(hold)) !== state.check) {
          strm.msg = 'incorrect data check';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        //Tracev((stderr, "inflate:   check matches trailer\n"));
      }
      state.mode = LENGTH;
      /* falls through */
    case LENGTH:
      if (state.wrap && state.flags) {
        //=== NEEDBITS(32);
        while (bits < 32) {
          if (have === 0) { break inf_leave; }
          have--;
          hold += input[next++] << bits;
          bits += 8;
        }
        //===//
        if (hold !== (state.total & 0xffffffff)) {
          strm.msg = 'incorrect length check';
          state.mode = BAD;
          break;
        }
        //=== INITBITS();
        hold = 0;
        bits = 0;
        //===//
        //Tracev((stderr, "inflate:   length matches trailer\n"));
      }
      state.mode = DONE;
      /* falls through */
    case DONE:
      ret = Z_STREAM_END;
      break inf_leave;
    case BAD:
      ret = Z_DATA_ERROR;
      break inf_leave;
    case MEM:
      return Z_MEM_ERROR;
    case SYNC:
      /* falls through */
    default:
      return Z_STREAM_ERROR;
    }
  }

  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"

  /*
     Return from inflate(), updating the total counts and the check value.
     If there was no progress during the inflate() call, return a buffer
     error.  Call updatewindow() to create and/or update the window state.
     Note: a memory error from inflate() is non-recoverable.
   */

  //--- RESTORE() ---
  strm.next_out = put;
  strm.avail_out = left;
  strm.next_in = next;
  strm.avail_in = have;
  state.hold = hold;
  state.bits = bits;
  //---

  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&
                      (state.mode < CHECK || flush !== Z_FINISH))) {
    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {
      state.mode = MEM;
      return Z_MEM_ERROR;
    }
  }
  _in -= strm.avail_in;
  _out -= strm.avail_out;
  strm.total_in += _in;
  strm.total_out += _out;
  state.total += _out;
  if (state.wrap && _out) {
    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/
      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));
  }
  strm.data_type = state.bits + (state.last ? 64 : 0) +
                    (state.mode === TYPE ? 128 : 0) +
                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {
    ret = Z_BUF_ERROR;
  }
  return ret;
}

function inflateEnd(strm) {

  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {
    return Z_STREAM_ERROR;
  }

  var state = strm.state;
  if (state.window) {
    state.window = null;
  }
  strm.state = null;
  return Z_OK;
}

function inflateGetHeader(strm, head) {
  var state;

  /* check state */
  if (!strm || !strm.state) { return Z_STREAM_ERROR; }
  state = strm.state;
  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }

  /* save header structure */
  state.head = head;
  head.done = false;
  return Z_OK;
}

function inflateSetDictionary(strm, dictionary) {
  var dictLength = dictionary.length;

  var state;
  var dictid;
  var ret;

  /* check state */
  if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }
  state = strm.state;

  if (state.wrap !== 0 && state.mode !== DICT) {
    return Z_STREAM_ERROR;
  }

  /* check for correct dictionary identifier */
  if (state.mode === DICT) {
    dictid = 1; /* adler32(0, null, 0)*/
    /* dictid = adler32(dictid, dictionary, dictLength); */
    dictid = adler32(dictid, dictionary, dictLength, 0);
    if (dictid !== state.check) {
      return Z_DATA_ERROR;
    }
  }
  /* copy dictionary to window using updatewindow(), which will amend the
   existing dictionary if appropriate */
  ret = updatewindow(strm, dictionary, dictLength, dictLength);
  if (ret) {
    state.mode = MEM;
    return Z_MEM_ERROR;
  }
  state.havedict = 1;
  // Tracev((stderr, "inflate:   dictionary set\n"));
  return Z_OK;
}

exports.inflateReset = inflateReset;
exports.inflateReset2 = inflateReset2;
exports.inflateResetKeep = inflateResetKeep;
exports.inflateInit = inflateInit;
exports.inflateInit2 = inflateInit2;
exports.inflate = inflate;
exports.inflateEnd = inflateEnd;
exports.inflateGetHeader = inflateGetHeader;
exports.inflateSetDictionary = inflateSetDictionary;
exports.inflateInfo = 'pako inflate (from Nodeca project)';

/* Not implemented
exports.inflateCopy = inflateCopy;
exports.inflateGetDictionary = inflateGetDictionary;
exports.inflateMark = inflateMark;
exports.inflatePrime = inflatePrime;
exports.inflateSync = inflateSync;
exports.inflateSyncPoint = inflateSyncPoint;
exports.inflateUndermine = inflateUndermine;
*/

},{"../utils/common":451,"./adler32":452,"./crc32":454,"./inffast":456,"./inftrees":458}],458:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');

var MAXBITS = 15;
var ENOUGH_LENS = 852;
var ENOUGH_DISTS = 592;
//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);

var CODES = 0;
var LENS = 1;
var DISTS = 2;

var lbase = [ /* Length codes 257..285 base */
  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
];

var lext = [ /* Length codes 257..285 extra */
  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
];

var dbase = [ /* Distance codes 0..29 base */
  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
  8193, 12289, 16385, 24577, 0, 0
];

var dext = [ /* Distance codes 0..29 extra */
  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
  28, 28, 29, 29, 64, 64
];

module.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)
{
  var bits = opts.bits;
      //here = opts.here; /* table entry for duplication */

  var len = 0;               /* a code's length in bits */
  var sym = 0;               /* index of code symbols */
  var min = 0, max = 0;          /* minimum and maximum code lengths */
  var root = 0;              /* number of index bits for root table */
  var curr = 0;              /* number of index bits for current table */
  var drop = 0;              /* code bits to drop for sub-table */
  var left = 0;                   /* number of prefix codes available */
  var used = 0;              /* code entries in table used */
  var huff = 0;              /* Huffman code */
  var incr;              /* for incrementing code, index */
  var fill;              /* index for replicating entries */
  var low;               /* low bits for current root entry */
  var mask;              /* mask for low root bits */
  var next;             /* next available space in table */
  var base = null;     /* base value table to use */
  var base_index = 0;
//  var shoextra;    /* extra bits table to use */
  var end;                    /* use base and extra for symbol > end */
  var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */
  var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */
  var extra = null;
  var extra_index = 0;

  var here_bits, here_op, here_val;

  /*
   Process a set of code lengths to create a canonical Huffman code.  The
   code lengths are lens[0..codes-1].  Each length corresponds to the
   symbols 0..codes-1.  The Huffman code is generated by first sorting the
   symbols by length from short to long, and retaining the symbol order
   for codes with equal lengths.  Then the code starts with all zero bits
   for the first code of the shortest length, and the codes are integer
   increments for the same length, and zeros are appended as the length
   increases.  For the deflate format, these bits are stored backwards
   from their more natural integer increment ordering, and so when the
   decoding tables are built in the large loop below, the integer codes
   are incremented backwards.

   This routine assumes, but does not check, that all of the entries in
   lens[] are in the range 0..MAXBITS.  The caller must assure this.
   1..MAXBITS is interpreted as that code length.  zero means that that
   symbol does not occur in this code.

   The codes are sorted by computing a count of codes for each length,
   creating from that a table of starting indices for each length in the
   sorted table, and then entering the symbols in order in the sorted
   table.  The sorted table is work[], with that space being provided by
   the caller.

   The length counts are used for other purposes as well, i.e. finding
   the minimum and maximum length codes, determining if there are any
   codes at all, checking for a valid set of lengths, and looking ahead
   at length counts to determine sub-table sizes when building the
   decoding tables.
   */

  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
  for (len = 0; len <= MAXBITS; len++) {
    count[len] = 0;
  }
  for (sym = 0; sym < codes; sym++) {
    count[lens[lens_index + sym]]++;
  }

  /* bound code lengths, force root to be within code lengths */
  root = bits;
  for (max = MAXBITS; max >= 1; max--) {
    if (count[max] !== 0) { break; }
  }
  if (root > max) {
    root = max;
  }
  if (max === 0) {                     /* no symbols to code at all */
    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;


    //table.op[opts.table_index] = 64;
    //table.bits[opts.table_index] = 1;
    //table.val[opts.table_index++] = 0;
    table[table_index++] = (1 << 24) | (64 << 16) | 0;

    opts.bits = 1;
    return 0;     /* no symbols, but wait for decoding to report error */
  }
  for (min = 1; min < max; min++) {
    if (count[min] !== 0) { break; }
  }
  if (root < min) {
    root = min;
  }

  /* check for an over-subscribed or incomplete set of lengths */
  left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= count[len];
    if (left < 0) {
      return -1;
    }        /* over-subscribed */
  }
  if (left > 0 && (type === CODES || max !== 1)) {
    return -1;                      /* incomplete set */
  }

  /* generate offsets into symbol table for each length for sorting */
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++) {
    offs[len + 1] = offs[len] + count[len];
  }

  /* sort symbols by length, by symbol order within each length */
  for (sym = 0; sym < codes; sym++) {
    if (lens[lens_index + sym] !== 0) {
      work[offs[lens[lens_index + sym]]++] = sym;
    }
  }

  /*
   Create and fill in decoding tables.  In this loop, the table being
   filled is at next and has curr index bits.  The code being used is huff
   with length len.  That code is converted to an index by dropping drop
   bits off of the bottom.  For codes where len is less than drop + curr,
   those top drop + curr - len bits are incremented through all values to
   fill the table with replicated entries.

   root is the number of index bits for the root table.  When len exceeds
   root, sub-tables are created pointed to by the root entry with an index
   of the low root bits of huff.  This is saved in low to check for when a
   new sub-table should be started.  drop is zero when the root table is
   being filled, and drop is root when sub-tables are being filled.

   When a new sub-table is needed, it is necessary to look ahead in the
   code lengths to determine what size sub-table is needed.  The length
   counts are used for this, and so count[] is decremented as codes are
   entered in the tables.

   used keeps track of how many table entries have been allocated from the
   provided *table space.  It is checked for LENS and DIST tables against
   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
   the initial root table size constants.  See the comments in inftrees.h
   for more information.

   sym increments through all symbols, and the loop terminates when
   all codes of length max, i.e. all codes, have been processed.  This
   routine permits incomplete codes, so another loop after this one fills
   in the rest of the decoding tables with invalid code markers.
   */

  /* set up for code type */
  // poor man optimization - use if-else instead of switch,
  // to avoid deopts in old v8
  if (type === CODES) {
    base = extra = work;    /* dummy value--not used */
    end = 19;

  } else if (type === LENS) {
    base = lbase;
    base_index -= 257;
    extra = lext;
    extra_index -= 257;
    end = 256;

  } else {                    /* DISTS */
    base = dbase;
    extra = dext;
    end = -1;
  }

  /* initialize opts for loop */
  huff = 0;                   /* starting code */
  sym = 0;                    /* starting code symbol */
  len = min;                  /* starting code length */
  next = table_index;              /* current table to fill in */
  curr = root;                /* current table index bits */
  drop = 0;                   /* current bits to drop from code for index */
  low = -1;                   /* trigger new sub-table when len > root */
  used = 1 << root;          /* use root table entries */
  mask = used - 1;            /* mask for comparing low */

  /* check available table space */
  if ((type === LENS && used > ENOUGH_LENS) ||
    (type === DISTS && used > ENOUGH_DISTS)) {
    return 1;
  }

  var i = 0;
  /* process all codes and make table entries */
  for (;;) {
    i++;
    /* create table entry */
    here_bits = len - drop;
    if (work[sym] < end) {
      here_op = 0;
      here_val = work[sym];
    }
    else if (work[sym] > end) {
      here_op = extra[extra_index + work[sym]];
      here_val = base[base_index + work[sym]];
    }
    else {
      here_op = 32 + 64;         /* end of block */
      here_val = 0;
    }

    /* replicate for those indices with low len bits equal to huff */
    incr = 1 << (len - drop);
    fill = 1 << curr;
    min = fill;                 /* save offset to next table */
    do {
      fill -= incr;
      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
    } while (fill !== 0);

    /* backwards increment the len-bit code huff */
    incr = 1 << (len - 1);
    while (huff & incr) {
      incr >>= 1;
    }
    if (incr !== 0) {
      huff &= incr - 1;
      huff += incr;
    } else {
      huff = 0;
    }

    /* go to next symbol, update count, len */
    sym++;
    if (--count[len] === 0) {
      if (len === max) { break; }
      len = lens[lens_index + work[sym]];
    }

    /* create new sub-table if needed */
    if (len > root && (huff & mask) !== low) {
      /* if first time, transition to sub-tables */
      if (drop === 0) {
        drop = root;
      }

      /* increment past last table */
      next += min;            /* here min is 1 << curr */

      /* determine length of next table */
      curr = len - drop;
      left = 1 << curr;
      while (curr + drop < max) {
        left -= count[curr + drop];
        if (left <= 0) { break; }
        curr++;
        left <<= 1;
      }

      /* check for enough space */
      used += 1 << curr;
      if ((type === LENS && used > ENOUGH_LENS) ||
        (type === DISTS && used > ENOUGH_DISTS)) {
        return 1;
      }

      /* point entry in root table to sub-table */
      low = huff & mask;
      /*table.op[low] = curr;
      table.bits[low] = root;
      table.val[low] = next - opts.table_index;*/
      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
    }
  }

  /* fill in remaining table entry if code is incomplete (guaranteed to have
   at most one remaining entry, since if the code is incomplete, the
   maximum code length that was allowed to get this far is one bit) */
  if (huff !== 0) {
    //table.op[next + huff] = 64;            /* invalid code marker */
    //table.bits[next + huff] = len - drop;
    //table.val[next + huff] = 0;
    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
  }

  /* set return parameters */
  //opts.table_index += used;
  opts.bits = root;
  return 0;
};

},{"../utils/common":451}],459:[function(require,module,exports){
'use strict';

module.exports = {
  2:      'need dictionary',     /* Z_NEED_DICT       2  */
  1:      'stream end',          /* Z_STREAM_END      1  */
  0:      '',                    /* Z_OK              0  */
  '-1':   'file error',          /* Z_ERRNO         (-1) */
  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
};

},{}],460:[function(require,module,exports){
'use strict';


var utils = require('../utils/common');

/* Public constants ==========================================================*/
/* ===========================================================================*/


//var Z_FILTERED          = 1;
//var Z_HUFFMAN_ONLY      = 2;
//var Z_RLE               = 3;
var Z_FIXED               = 4;
//var Z_DEFAULT_STRATEGY  = 0;

/* Possible values of the data_type field (though see inflate()) */
var Z_BINARY              = 0;
var Z_TEXT                = 1;
//var Z_ASCII             = 1; // = Z_TEXT
var Z_UNKNOWN             = 2;

/*============================================================================*/


function zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }

// From zutil.h

var STORED_BLOCK = 0;
var STATIC_TREES = 1;
var DYN_TREES    = 2;
/* The three kinds of block type */

var MIN_MATCH    = 3;
var MAX_MATCH    = 258;
/* The minimum and maximum match lengths */

// From deflate.h
/* ===========================================================================
 * Internal compression state.
 */

var LENGTH_CODES  = 29;
/* number of length codes, not counting the special END_BLOCK code */

var LITERALS      = 256;
/* number of literal bytes 0..255 */

var L_CODES       = LITERALS + 1 + LENGTH_CODES;
/* number of Literal or Length codes, including the END_BLOCK code */

var D_CODES       = 30;
/* number of distance codes */

var BL_CODES      = 19;
/* number of codes used to transfer the bit lengths */

var HEAP_SIZE     = 2 * L_CODES + 1;
/* maximum heap size */

var MAX_BITS      = 15;
/* All codes must not exceed MAX_BITS bits */

var Buf_size      = 16;
/* size of bit buffer in bi_buf */


/* ===========================================================================
 * Constants
 */

var MAX_BL_BITS = 7;
/* Bit length codes must not exceed MAX_BL_BITS bits */

var END_BLOCK   = 256;
/* end of block literal code */

var REP_3_6     = 16;
/* repeat previous bit length 3-6 times (2 bits of repeat count) */

var REPZ_3_10   = 17;
/* repeat a zero length 3-10 times  (3 bits of repeat count) */

var REPZ_11_138 = 18;
/* repeat a zero length 11-138 times  (7 bits of repeat count) */

/* eslint-disable comma-spacing,array-bracket-spacing */
var extra_lbits =   /* extra bits for each length code */
  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];

var extra_dbits =   /* extra bits for each distance code */
  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];

var extra_blbits =  /* extra bits for each bit length code */
  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];

var bl_order =
  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];
/* eslint-enable comma-spacing,array-bracket-spacing */

/* The lengths of the bit length codes are sent in order of decreasing
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

/* ===========================================================================
 * Local data. These are initialized only once.
 */

// We pre-fill arrays with 0 to avoid uninitialized gaps

var DIST_CODE_LEN = 512; /* see definition of array dist_code below */

// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1
var static_ltree  = new Array((L_CODES + 2) * 2);
zero(static_ltree);
/* The static literal tree. Since the bit lengths are imposed, there is no
 * need for the L_CODES extra codes used during heap construction. However
 * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
 * below).
 */

var static_dtree  = new Array(D_CODES * 2);
zero(static_dtree);
/* The static distance tree. (Actually a trivial tree since all codes use
 * 5 bits.)
 */

var _dist_code    = new Array(DIST_CODE_LEN);
zero(_dist_code);
/* Distance codes. The first 256 values correspond to the distances
 * 3 .. 258, the last 256 values correspond to the top 8 bits of
 * the 15 bit distances.
 */

var _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);
zero(_length_code);
/* length code for each normalized match length (0 == MIN_MATCH) */

var base_length   = new Array(LENGTH_CODES);
zero(base_length);
/* First normalized length for each code (0 = MIN_MATCH) */

var base_dist     = new Array(D_CODES);
zero(base_dist);
/* First normalized distance for each code (0 = distance of 1) */


function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {

  this.static_tree  = static_tree;  /* static tree or NULL */
  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
  this.extra_base   = extra_base;   /* base index for extra_bits */
  this.elems        = elems;        /* max number of elements in the tree */
  this.max_length   = max_length;   /* max bit length for the codes */

  // show if `static_tree` has data or dummy - needed for monomorphic objects
  this.has_stree    = static_tree && static_tree.length;
}


var static_l_desc;
var static_d_desc;
var static_bl_desc;


function TreeDesc(dyn_tree, stat_desc) {
  this.dyn_tree = dyn_tree;     /* the dynamic tree */
  this.max_code = 0;            /* largest code with non zero frequency */
  this.stat_desc = stat_desc;   /* the corresponding static tree */
}



function d_code(dist) {
  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];
}


/* ===========================================================================
 * Output a short LSB first on the stream.
 * IN assertion: there is enough room in pendingBuf.
 */
function put_short(s, w) {
//    put_byte(s, (uch)((w) & 0xff));
//    put_byte(s, (uch)((ush)(w) >> 8));
  s.pending_buf[s.pending++] = (w) & 0xff;
  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
}


/* ===========================================================================
 * Send a value on a given number of bits.
 * IN assertion: length <= 16 and value fits in length bits.
 */
function send_bits(s, value, length) {
  if (s.bi_valid > (Buf_size - length)) {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    put_short(s, s.bi_buf);
    s.bi_buf = value >> (Buf_size - s.bi_valid);
    s.bi_valid += length - Buf_size;
  } else {
    s.bi_buf |= (value << s.bi_valid) & 0xffff;
    s.bi_valid += length;
  }
}


function send_code(s, c, tree) {
  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
}


/* ===========================================================================
 * Reverse the first len bits of a code, using straightforward code (a faster
 * method would use a table)
 * IN assertion: 1 <= len <= 15
 */
function bi_reverse(code, len) {
  var res = 0;
  do {
    res |= code & 1;
    code >>>= 1;
    res <<= 1;
  } while (--len > 0);
  return res >>> 1;
}


/* ===========================================================================
 * Flush the bit buffer, keeping at most 7 bits in it.
 */
function bi_flush(s) {
  if (s.bi_valid === 16) {
    put_short(s, s.bi_buf);
    s.bi_buf = 0;
    s.bi_valid = 0;

  } else if (s.bi_valid >= 8) {
    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
    s.bi_buf >>= 8;
    s.bi_valid -= 8;
  }
}


/* ===========================================================================
 * Compute the optimal bit lengths for a tree and update the total bit length
 * for the current block.
 * IN assertion: the fields freq and dad are set, heap[heap_max] and
 *    above are the tree nodes sorted by increasing frequency.
 * OUT assertions: the field len is set to the optimal bit length, the
 *     array bl_count contains the frequencies for each bit length.
 *     The length opt_len is updated; static_len is also updated if stree is
 *     not null.
 */
function gen_bitlen(s, desc)
//    deflate_state *s;
//    tree_desc *desc;    /* the tree descriptor */
{
  var tree            = desc.dyn_tree;
  var max_code        = desc.max_code;
  var stree           = desc.stat_desc.static_tree;
  var has_stree       = desc.stat_desc.has_stree;
  var extra           = desc.stat_desc.extra_bits;
  var base            = desc.stat_desc.extra_base;
  var max_length      = desc.stat_desc.max_length;
  var h;              /* heap index */
  var n, m;           /* iterate over the tree elements */
  var bits;           /* bit length */
  var xbits;          /* extra bits */
  var f;              /* frequency */
  var overflow = 0;   /* number of elements with bit length too large */

  for (bits = 0; bits <= MAX_BITS; bits++) {
    s.bl_count[bits] = 0;
  }

  /* In a first pass, compute the optimal bit lengths (which may
   * overflow in the case of the bit length tree).
   */
  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */

  for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {
    n = s.heap[h];
    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
    if (bits > max_length) {
      bits = max_length;
      overflow++;
    }
    tree[n * 2 + 1]/*.Len*/ = bits;
    /* We overwrite tree[n].Dad which is no longer needed */

    if (n > max_code) { continue; } /* not a leaf node */

    s.bl_count[bits]++;
    xbits = 0;
    if (n >= base) {
      xbits = extra[n - base];
    }
    f = tree[n * 2]/*.Freq*/;
    s.opt_len += f * (bits + xbits);
    if (has_stree) {
      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);
    }
  }
  if (overflow === 0) { return; }

  // Trace((stderr,"\nbit length overflow\n"));
  /* This happens for example on obj2 and pic of the Calgary corpus */

  /* Find the first bit length which could increase: */
  do {
    bits = max_length - 1;
    while (s.bl_count[bits] === 0) { bits--; }
    s.bl_count[bits]--;      /* move one leaf down the tree */
    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */
    s.bl_count[max_length]--;
    /* The brother of the overflow item also moves one step up,
     * but this does not affect bl_count[max_length]
     */
    overflow -= 2;
  } while (overflow > 0);

  /* Now recompute all bit lengths, scanning in increasing frequency.
   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
   * lengths instead of fixing only the wrong ones. This idea is taken
   * from 'ar' written by Haruhiko Okumura.)
   */
  for (bits = max_length; bits !== 0; bits--) {
    n = s.bl_count[bits];
    while (n !== 0) {
      m = s.heap[--h];
      if (m > max_code) { continue; }
      if (tree[m * 2 + 1]/*.Len*/ !== bits) {
        // Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;
        tree[m * 2 + 1]/*.Len*/ = bits;
      }
      n--;
    }
  }
}


/* ===========================================================================
 * Generate the codes for a given tree and bit counts (which need not be
 * optimal).
 * IN assertion: the array bl_count contains the bit length statistics for
 * the given tree and the field len is set for all tree elements.
 * OUT assertion: the field code is set for all tree elements of non
 *     zero code length.
 */
function gen_codes(tree, max_code, bl_count)
//    ct_data *tree;             /* the tree to decorate */
//    int max_code;              /* largest code with non zero frequency */
//    ushf *bl_count;            /* number of codes at each bit length */
{
  var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */
  var code = 0;              /* running code value */
  var bits;                  /* bit index */
  var n;                     /* code index */

  /* The distribution counts are first used to generate the code values
   * without bit reversal.
   */
  for (bits = 1; bits <= MAX_BITS; bits++) {
    next_code[bits] = code = (code + bl_count[bits - 1]) << 1;
  }
  /* Check that the bit counts in bl_count are consistent. The last code
   * must be all ones.
   */
  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
  //        "inconsistent bit counts");
  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));

  for (n = 0;  n <= max_code; n++) {
    var len = tree[n * 2 + 1]/*.Len*/;
    if (len === 0) { continue; }
    /* Now reverse the bits */
    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);

    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
  }
}


/* ===========================================================================
 * Initialize the various 'constant' tables.
 */
function tr_static_init() {
  var n;        /* iterates over tree elements */
  var bits;     /* bit counter */
  var length;   /* length value */
  var code;     /* code value */
  var dist;     /* distance index */
  var bl_count = new Array(MAX_BITS + 1);
  /* number of codes at each bit length for an optimal tree */

  // do check in _tr_init()
  //if (static_init_done) return;

  /* For some embedded targets, global variables are not initialized: */
/*#ifdef NO_INIT_GLOBAL_POINTERS
  static_l_desc.static_tree = static_ltree;
  static_l_desc.extra_bits = extra_lbits;
  static_d_desc.static_tree = static_dtree;
  static_d_desc.extra_bits = extra_dbits;
  static_bl_desc.extra_bits = extra_blbits;
#endif*/

  /* Initialize the mapping length (0..255) -> length code (0..28) */
  length = 0;
  for (code = 0; code < LENGTH_CODES - 1; code++) {
    base_length[code] = length;
    for (n = 0; n < (1 << extra_lbits[code]); n++) {
      _length_code[length++] = code;
    }
  }
  //Assert (length == 256, "tr_static_init: length != 256");
  /* Note that the length 255 (match length 258) can be represented
   * in two different ways: code 284 + 5 bits or code 285, so we
   * overwrite length_code[255] to use the best encoding:
   */
  _length_code[length - 1] = code;

  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
  dist = 0;
  for (code = 0; code < 16; code++) {
    base_dist[code] = dist;
    for (n = 0; n < (1 << extra_dbits[code]); n++) {
      _dist_code[dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: dist != 256");
  dist >>= 7; /* from now on, all distances are divided by 128 */
  for (; code < D_CODES; code++) {
    base_dist[code] = dist << 7;
    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
      _dist_code[256 + dist++] = code;
    }
  }
  //Assert (dist == 256, "tr_static_init: 256+dist != 512");

  /* Construct the codes of the static literal tree */
  for (bits = 0; bits <= MAX_BITS; bits++) {
    bl_count[bits] = 0;
  }

  n = 0;
  while (n <= 143) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  while (n <= 255) {
    static_ltree[n * 2 + 1]/*.Len*/ = 9;
    n++;
    bl_count[9]++;
  }
  while (n <= 279) {
    static_ltree[n * 2 + 1]/*.Len*/ = 7;
    n++;
    bl_count[7]++;
  }
  while (n <= 287) {
    static_ltree[n * 2 + 1]/*.Len*/ = 8;
    n++;
    bl_count[8]++;
  }
  /* Codes 286 and 287 do not exist, but we must include them in the
   * tree construction to get a canonical Huffman tree (longest code
   * all ones)
   */
  gen_codes(static_ltree, L_CODES + 1, bl_count);

  /* The static distance tree is trivial: */
  for (n = 0; n < D_CODES; n++) {
    static_dtree[n * 2 + 1]/*.Len*/ = 5;
    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);
  }

  // Now data ready and we can init static trees
  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS);
  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);
  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);

  //static_init_done = true;
}


/* ===========================================================================
 * Initialize a new block.
 */
function init_block(s) {
  var n; /* iterates over tree elements */

  /* Initialize the trees. */
  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }
  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }

  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;
  s.opt_len = s.static_len = 0;
  s.last_lit = s.matches = 0;
}


/* ===========================================================================
 * Flush the bit buffer and align the output on a byte boundary
 */
function bi_windup(s)
{
  if (s.bi_valid > 8) {
    put_short(s, s.bi_buf);
  } else if (s.bi_valid > 0) {
    //put_byte(s, (Byte)s->bi_buf);
    s.pending_buf[s.pending++] = s.bi_buf;
  }
  s.bi_buf = 0;
  s.bi_valid = 0;
}

/* ===========================================================================
 * Copy a stored block, storing first the length and its
 * one's complement if requested.
 */
function copy_block(s, buf, len, header)
//DeflateState *s;
//charf    *buf;    /* the input data */
//unsigned len;     /* its length */
//int      header;  /* true if block header must be written */
{
  bi_windup(s);        /* align on byte boundary */

  if (header) {
    put_short(s, len);
    put_short(s, ~len);
  }
//  while (len--) {
//    put_byte(s, *buf++);
//  }
  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);
  s.pending += len;
}

/* ===========================================================================
 * Compares to subtrees, using the tree depth as tie breaker when
 * the subtrees have equal frequency. This minimizes the worst case length.
 */
function smaller(tree, n, m, depth) {
  var _n2 = n * 2;
  var _m2 = m * 2;
  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
}

/* ===========================================================================
 * Restore the heap property by moving down the tree starting at node k,
 * exchanging a node with the smallest of its two sons if necessary, stopping
 * when the heap property is re-established (each father smaller than its
 * two sons).
 */
function pqdownheap(s, tree, k)
//    deflate_state *s;
//    ct_data *tree;  /* the tree to restore */
//    int k;               /* node to move down */
{
  var v = s.heap[k];
  var j = k << 1;  /* left son of k */
  while (j <= s.heap_len) {
    /* Set j to the smallest of the two sons: */
    if (j < s.heap_len &&
      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {
      j++;
    }
    /* Exit if v is smaller than both sons */
    if (smaller(tree, v, s.heap[j], s.depth)) { break; }

    /* Exchange v with the smallest son */
    s.heap[k] = s.heap[j];
    k = j;

    /* And continue down the tree, setting j to the left son of k */
    j <<= 1;
  }
  s.heap[k] = v;
}


// inlined manually
// var SMALLEST = 1;

/* ===========================================================================
 * Send the block data compressed using the given Huffman trees
 */
function compress_block(s, ltree, dtree)
//    deflate_state *s;
//    const ct_data *ltree; /* literal tree */
//    const ct_data *dtree; /* distance tree */
{
  var dist;           /* distance of matched string */
  var lc;             /* match length or unmatched char (if dist == 0) */
  var lx = 0;         /* running index in l_buf */
  var code;           /* the code to send */
  var extra;          /* number of extra bits to send */

  if (s.last_lit !== 0) {
    do {
      dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]);
      lc = s.pending_buf[s.l_buf + lx];
      lx++;

      if (dist === 0) {
        send_code(s, lc, ltree); /* send a literal byte */
        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
      } else {
        /* Here, lc is the match length - MIN_MATCH */
        code = _length_code[lc];
        send_code(s, code + LITERALS + 1, ltree); /* send the length code */
        extra = extra_lbits[code];
        if (extra !== 0) {
          lc -= base_length[code];
          send_bits(s, lc, extra);       /* send the extra length bits */
        }
        dist--; /* dist is now the match distance - 1 */
        code = d_code(dist);
        //Assert (code < D_CODES, "bad d_code");

        send_code(s, code, dtree);       /* send the distance code */
        extra = extra_dbits[code];
        if (extra !== 0) {
          dist -= base_dist[code];
          send_bits(s, dist, extra);   /* send the extra distance bits */
        }
      } /* literal or match pair ? */

      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
      //       "pendingBuf overflow");

    } while (lx < s.last_lit);
  }

  send_code(s, END_BLOCK, ltree);
}


/* ===========================================================================
 * Construct one Huffman tree and assigns the code bit strings and lengths.
 * Update the total bit length for the current block.
 * IN assertion: the field freq is set for all tree elements.
 * OUT assertions: the fields len and code are set to the optimal bit length
 *     and corresponding code. The length opt_len is updated; static_len is
 *     also updated if stree is not null. The field max_code is set.
 */
function build_tree(s, desc)
//    deflate_state *s;
//    tree_desc *desc; /* the tree descriptor */
{
  var tree     = desc.dyn_tree;
  var stree    = desc.stat_desc.static_tree;
  var has_stree = desc.stat_desc.has_stree;
  var elems    = desc.stat_desc.elems;
  var n, m;          /* iterate over heap elements */
  var max_code = -1; /* largest code with non zero frequency */
  var node;          /* new node being created */

  /* Construct the initial heap, with least frequent element in
   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
   * heap[0] is not used.
   */
  s.heap_len = 0;
  s.heap_max = HEAP_SIZE;

  for (n = 0; n < elems; n++) {
    if (tree[n * 2]/*.Freq*/ !== 0) {
      s.heap[++s.heap_len] = max_code = n;
      s.depth[n] = 0;

    } else {
      tree[n * 2 + 1]/*.Len*/ = 0;
    }
  }

  /* The pkzip format requires that at least one distance code exists,
   * and that at least one bit should be sent even if there is only one
   * possible code. So to avoid special checks later on we force at least
   * two codes of non zero frequency.
   */
  while (s.heap_len < 2) {
    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
    tree[node * 2]/*.Freq*/ = 1;
    s.depth[node] = 0;
    s.opt_len--;

    if (has_stree) {
      s.static_len -= stree[node * 2 + 1]/*.Len*/;
    }
    /* node is 0 or 1 so it does not have extra bits */
  }
  desc.max_code = max_code;

  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
   * establish sub-heaps of increasing lengths:
   */
  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }

  /* Construct the Huffman tree by repeatedly combining the least two
   * frequent nodes.
   */
  node = elems;              /* next internal node of the tree */
  do {
    //pqremove(s, tree, n);  /* n = node of least frequency */
    /*** pqremove ***/
    n = s.heap[1/*SMALLEST*/];
    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
    pqdownheap(s, tree, 1/*SMALLEST*/);
    /***/

    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */

    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
    s.heap[--s.heap_max] = m;

    /* Create a new node father of n and m */
    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;

    /* and insert the new node in the heap */
    s.heap[1/*SMALLEST*/] = node++;
    pqdownheap(s, tree, 1/*SMALLEST*/);

  } while (s.heap_len >= 2);

  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];

  /* At this point, the fields freq and dad are set. We can now
   * generate the bit lengths.
   */
  gen_bitlen(s, desc);

  /* The field len is now set, we can generate the bit codes */
  gen_codes(tree, max_code, s.bl_count);
}


/* ===========================================================================
 * Scan a literal or distance tree to determine the frequencies of the codes
 * in the bit length tree.
 */
function scan_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree;   /* the tree to be scanned */
//    int max_code;    /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }
  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      s.bl_tree[curlen * 2]/*.Freq*/ += count;

    } else if (curlen !== 0) {

      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;

    } else if (count <= 10) {
      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;

    } else {
      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;
    }

    count = 0;
    prevlen = curlen;

    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Send a literal or distance tree in compressed form, using the codes in
 * bl_tree.
 */
function send_tree(s, tree, max_code)
//    deflate_state *s;
//    ct_data *tree; /* the tree to be scanned */
//    int max_code;       /* and its largest code of non zero frequency */
{
  var n;                     /* iterates over all tree elements */
  var prevlen = -1;          /* last emitted length */
  var curlen;                /* length of current code */

  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */

  var count = 0;             /* repeat count of the current code */
  var max_count = 7;         /* max repeat count */
  var min_count = 4;         /* min repeat count */

  /* tree[max_code+1].Len = -1; */  /* guard already set */
  if (nextlen === 0) {
    max_count = 138;
    min_count = 3;
  }

  for (n = 0; n <= max_code; n++) {
    curlen = nextlen;
    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;

    if (++count < max_count && curlen === nextlen) {
      continue;

    } else if (count < min_count) {
      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);

    } else if (curlen !== 0) {
      if (curlen !== prevlen) {
        send_code(s, curlen, s.bl_tree);
        count--;
      }
      //Assert(count >= 3 && count <= 6, " 3_6?");
      send_code(s, REP_3_6, s.bl_tree);
      send_bits(s, count - 3, 2);

    } else if (count <= 10) {
      send_code(s, REPZ_3_10, s.bl_tree);
      send_bits(s, count - 3, 3);

    } else {
      send_code(s, REPZ_11_138, s.bl_tree);
      send_bits(s, count - 11, 7);
    }

    count = 0;
    prevlen = curlen;
    if (nextlen === 0) {
      max_count = 138;
      min_count = 3;

    } else if (curlen === nextlen) {
      max_count = 6;
      min_count = 3;

    } else {
      max_count = 7;
      min_count = 4;
    }
  }
}


/* ===========================================================================
 * Construct the Huffman tree for the bit lengths and return the index in
 * bl_order of the last bit length code to send.
 */
function build_bl_tree(s) {
  var max_blindex;  /* index of last bit length code of non zero freq */

  /* Determine the bit length frequencies for literal and distance trees */
  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);

  /* Build the bit length tree: */
  build_tree(s, s.bl_desc);
  /* opt_len now includes the length of the tree representations, except
   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
   */

  /* Determine the number of bit length codes to send. The pkzip format
   * requires that at least 4 bit length codes be sent. (appnote.txt says
   * 3 but the actual value used is 4.)
   */
  for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {
    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {
      break;
    }
  }
  /* Update opt_len to include the bit length tree and counts */
  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
  //        s->opt_len, s->static_len));

  return max_blindex;
}


/* ===========================================================================
 * Send the header for a block using dynamic Huffman trees: the counts, the
 * lengths of the bit length codes, the literal tree and the distance tree.
 * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
 */
function send_all_trees(s, lcodes, dcodes, blcodes)
//    deflate_state *s;
//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
{
  var rank;                    /* index in bl_order */

  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
  //        "too many codes");
  //Tracev((stderr, "\nbl counts: "));
  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
  send_bits(s, dcodes - 1,   5);
  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */
  for (rank = 0; rank < blcodes; rank++) {
    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);
  }
  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */
  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));

  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */
  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}


/* ===========================================================================
 * Check if the data type is TEXT or BINARY, using the following algorithm:
 * - TEXT if the two conditions below are satisfied:
 *    a) There are no non-portable control characters belonging to the
 *       "black list" (0..6, 14..25, 28..31).
 *    b) There is at least one printable character belonging to the
 *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
 * - BINARY otherwise.
 * - The following partially-portable control characters form a
 *   "gray list" that is ignored in this detection algorithm:
 *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
 * IN assertion: the fields Freq of dyn_ltree are set.
 */
function detect_data_type(s) {
  /* black_mask is the bit mask of black-listed bytes
   * set bits 0..6, 14..25, and 28..31
   * 0xf3ffc07f = binary 11110011111111111100000001111111
   */
  var black_mask = 0xf3ffc07f;
  var n;

  /* Check for non-textual ("black-listed") bytes. */
  for (n = 0; n <= 31; n++, black_mask >>>= 1) {
    if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {
      return Z_BINARY;
    }
  }

  /* Check for textual ("white-listed") bytes. */
  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
    return Z_TEXT;
  }
  for (n = 32; n < LITERALS; n++) {
    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
      return Z_TEXT;
    }
  }

  /* There are no "black-listed" or "white-listed" bytes:
   * this stream either is empty or has tolerated ("gray-listed") bytes only.
   */
  return Z_BINARY;
}


var static_init_done = false;

/* ===========================================================================
 * Initialize the tree data structures for a new zlib stream.
 */
function _tr_init(s)
{

  if (!static_init_done) {
    tr_static_init();
    static_init_done = true;
  }

  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);

  s.bi_buf = 0;
  s.bi_valid = 0;

  /* Initialize the first block of the first file: */
  init_block(s);
}


/* ===========================================================================
 * Send a stored block
 */
function _tr_stored_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */
  copy_block(s, buf, stored_len, true); /* with header */
}


/* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
 */
function _tr_align(s) {
  send_bits(s, STATIC_TREES << 1, 3);
  send_code(s, END_BLOCK, static_ltree);
  bi_flush(s);
}


/* ===========================================================================
 * Determine the best encoding for the current block: dynamic trees, static
 * trees or store, and output the encoded block to the zip file.
 */
function _tr_flush_block(s, buf, stored_len, last)
//DeflateState *s;
//charf *buf;       /* input block, or NULL if too old */
//ulg stored_len;   /* length of input block */
//int last;         /* one if this is the last block for a file */
{
  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
  var max_blindex = 0;        /* index of last bit length code of non zero freq */

  /* Build the Huffman trees unless a stored block is forced */
  if (s.level > 0) {

    /* Check if the file is binary or text */
    if (s.strm.data_type === Z_UNKNOWN) {
      s.strm.data_type = detect_data_type(s);
    }

    /* Construct the literal and distance trees */
    build_tree(s, s.l_desc);
    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));

    build_tree(s, s.d_desc);
    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
    //        s->static_len));
    /* At this point, opt_len and static_len are the total bit lengths of
     * the compressed block data, excluding the tree representations.
     */

    /* Build the bit length tree for the above two trees, and get the index
     * in bl_order of the last bit length code to send.
     */
    max_blindex = build_bl_tree(s);

    /* Determine the best encoding. Compute the block lengths in bytes. */
    opt_lenb = (s.opt_len + 3 + 7) >>> 3;
    static_lenb = (s.static_len + 3 + 7) >>> 3;

    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
    //        s->last_lit));

    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }

  } else {
    // Assert(buf != (char*)0, "lost buf");
    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
  }

  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {
    /* 4: two words for the lengths */

    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
     * Otherwise we can't have processed more than WSIZE input bytes since
     * the last block flush, because compression would have been
     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
     * transform a block into a stored block.
     */
    _tr_stored_block(s, buf, stored_len, last);

  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {

    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);
    compress_block(s, static_ltree, static_dtree);

  } else {
    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);
    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);
    compress_block(s, s.dyn_ltree, s.dyn_dtree);
  }
  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
  /* The above check is made mod 2^32, for files larger than 512 MB
   * and uLong implemented on 32 bits.
   */
  init_block(s);

  if (last) {
    bi_windup(s);
  }
  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
  //       s->compressed_len-7*last));
}

/* ===========================================================================
 * Save the match info and tally the frequency counts. Return true if
 * the current block must be flushed.
 */
function _tr_tally(s, dist, lc)
//    deflate_state *s;
//    unsigned dist;  /* distance of matched string */
//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
{
  //var out_length, in_length, dcode;

  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;
  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;

  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;
  s.last_lit++;

  if (dist === 0) {
    /* lc is the unmatched char */
    s.dyn_ltree[lc * 2]/*.Freq*/++;
  } else {
    s.matches++;
    /* Here, lc is the match length - MIN_MATCH */
    dist--;             /* dist = match distance - 1 */
    //Assert((ush)dist < (ush)MAX_DIST(s) &&
    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");

    s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++;
    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
  }

// (!) This block is disabled in zlib defailts,
// don't enable it for binary compatibility

//#ifdef TRUNCATE_BLOCK
//  /* Try to guess if it is profitable to stop the current block here */
//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {
//    /* Compute an upper bound for the compressed length */
//    out_length = s.last_lit*8;
//    in_length = s.strstart - s.block_start;
//
//    for (dcode = 0; dcode < D_CODES; dcode++) {
//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);
//    }
//    out_length >>>= 3;
//    //Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
//    //       s->last_lit, in_length, out_length,
//    //       100L - out_length*100L/in_length));
//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {
//      return true;
//    }
//  }
//#endif

  return (s.last_lit === s.lit_bufsize - 1);
  /* We avoid equality with lit_bufsize because of wraparound at 64K
   * on 16 bit machines and because stored blocks are restricted to
   * 64K-1 bytes.
   */
}

exports._tr_init  = _tr_init;
exports._tr_stored_block = _tr_stored_block;
exports._tr_flush_block  = _tr_flush_block;
exports._tr_tally = _tr_tally;
exports._tr_align = _tr_align;

},{"../utils/common":451}],461:[function(require,module,exports){
'use strict';


function ZStream() {
  /* next input byte */
  this.input = null; // JS specific, because we have no pointers
  this.next_in = 0;
  /* number of bytes available at input */
  this.avail_in = 0;
  /* total number of input bytes read so far */
  this.total_in = 0;
  /* next output byte should be put there */
  this.output = null; // JS specific, because we have no pointers
  this.next_out = 0;
  /* remaining free space at output */
  this.avail_out = 0;
  /* total number of bytes output so far */
  this.total_out = 0;
  /* last error message, NULL if no error */
  this.msg = ''/*Z_NULL*/;
  /* not visible by applications */
  this.state = null;
  /* best guess about the data type: binary or text */
  this.data_type = 2/*Z_UNKNOWN*/;
  /* adler32 value of the uncompressed data */
  this.adler = 0;
}

module.exports = ZStream;

},{}],462:[function(require,module,exports){
module.exports = function parseUnit(str, out) {
    if (!out)
        out = [ 0, '' ]

    str = String(str)
    var num = parseFloat(str, 10)
    out[0] = num
    out[1] = str.match(/[\d.\-\+]*\s*(.*)/)[1] || ''
    return out
}
},{}],463:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
}

// Split a filename into [root, dir, basename, ext], unix version
// 'root' is just a slash, or nothing.
var splitPathRe =
    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
var splitPath = function(filename) {
  return splitPathRe.exec(filename).slice(1);
};

// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};

// path.normalize(path)
// posix version
exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
};

// posix version
exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
};

// posix version
exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
};


// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
};

exports.sep = '/';
exports.delimiter = ':';

exports.dirname = function(path) {
  var result = splitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
};


exports.basename = function(path, ext) {
  var f = splitPath(path)[2];
  // TODO: make this comparison case-insensitive on windows?
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
};


exports.extname = function(path) {
  return splitPath(path)[3];
};

function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
}

// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
;

}).call(this,require('_process'))
},{"_process":923}],464:[function(require,module,exports){
'use strict';

// lightweight Buffer shim for pbf browser build
// based on code from github.com/feross/buffer (MIT-licensed)

module.exports = Buffer;

var ieee754 = require('ieee754');

var BufferMethods;

function Buffer(length) {
    var arr;
    if (length && length.length) {
        arr = length;
        length = arr.length;
    }
    var buf = new Uint8Array(length || 0);
    if (arr) buf.set(arr);

    buf.readUInt32LE = BufferMethods.readUInt32LE;
    buf.writeUInt32LE = BufferMethods.writeUInt32LE;
    buf.readInt32LE = BufferMethods.readInt32LE;
    buf.writeInt32LE = BufferMethods.writeInt32LE;
    buf.readFloatLE = BufferMethods.readFloatLE;
    buf.writeFloatLE = BufferMethods.writeFloatLE;
    buf.readDoubleLE = BufferMethods.readDoubleLE;
    buf.writeDoubleLE = BufferMethods.writeDoubleLE;
    buf.toString = BufferMethods.toString;
    buf.write = BufferMethods.write;
    buf.slice = BufferMethods.slice;
    buf.copy = BufferMethods.copy;

    buf._isBuffer = true;
    return buf;
}

var lastStr, lastStrEncoded;

BufferMethods = {
    readUInt32LE: function(pos) {
        return ((this[pos]) |
            (this[pos + 1] << 8) |
            (this[pos + 2] << 16)) +
            (this[pos + 3] * 0x1000000);
    },

    writeUInt32LE: function(val, pos) {
        this[pos] = val;
        this[pos + 1] = (val >>> 8);
        this[pos + 2] = (val >>> 16);
        this[pos + 3] = (val >>> 24);
    },

    readInt32LE: function(pos) {
        return ((this[pos]) |
            (this[pos + 1] << 8) |
            (this[pos + 2] << 16)) +
            (this[pos + 3] << 24);
    },

    readFloatLE:  function(pos) { return ieee754.read(this, pos, true, 23, 4); },
    readDoubleLE: function(pos) { return ieee754.read(this, pos, true, 52, 8); },

    writeFloatLE:  function(val, pos) { return ieee754.write(this, val, pos, true, 23, 4); },
    writeDoubleLE: function(val, pos) { return ieee754.write(this, val, pos, true, 52, 8); },

    toString: function(encoding, start, end) {
        var str = '',
            tmp = '';

        start = start || 0;
        end = Math.min(this.length, end || this.length);

        for (var i = start; i < end; i++) {
            var ch = this[i];
            if (ch <= 0x7F) {
                str += decodeURIComponent(tmp) + String.fromCharCode(ch);
                tmp = '';
            } else {
                tmp += '%' + ch.toString(16);
            }
        }

        str += decodeURIComponent(tmp);

        return str;
    },

    write: function(str, pos) {
        var bytes = str === lastStr ? lastStrEncoded : encodeString(str);
        for (var i = 0; i < bytes.length; i++) {
            this[pos + i] = bytes[i];
        }
    },

    slice: function(start, end) {
        return this.subarray(start, end);
    },

    copy: function(buf, pos) {
        pos = pos || 0;
        for (var i = 0; i < this.length; i++) {
            buf[pos + i] = this[i];
        }
    }
};

BufferMethods.writeInt32LE = BufferMethods.writeUInt32LE;

Buffer.byteLength = function(str) {
    lastStr = str;
    lastStrEncoded = encodeString(str);
    return lastStrEncoded.length;
};

Buffer.isBuffer = function(buf) {
    return !!(buf && buf._isBuffer);
};

function encodeString(str) {
    var length = str.length,
        bytes = [];

    for (var i = 0, c, lead; i < length; i++) {
        c = str.charCodeAt(i); // code point

        if (c > 0xD7FF && c < 0xE000) {

            if (lead) {
                if (c < 0xDC00) {
                    bytes.push(0xEF, 0xBF, 0xBD);
                    lead = c;
                    continue;

                } else {
                    c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;
                    lead = null;
                }

            } else {
                if (c > 0xDBFF || (i + 1 === length)) bytes.push(0xEF, 0xBF, 0xBD);
                else lead = c;

                continue;
            }

        } else if (lead) {
            bytes.push(0xEF, 0xBF, 0xBD);
            lead = null;
        }

        if (c < 0x80) bytes.push(c);
        else if (c < 0x800) bytes.push(c >> 0x6 | 0xC0, c & 0x3F | 0x80);
        else if (c < 0x10000) bytes.push(c >> 0xC | 0xE0, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
        else bytes.push(c >> 0x12 | 0xF0, c >> 0xC & 0x3F | 0x80, c >> 0x6 & 0x3F | 0x80, c & 0x3F | 0x80);
    }
    return bytes;
}

},{"ieee754":260}],465:[function(require,module,exports){
(function (global){
'use strict';

module.exports = Pbf;

var Buffer = global.Buffer || require('./buffer');

function Pbf(buf) {
    this.buf = !Buffer.isBuffer(buf) ? new Buffer(buf || 0) : buf;
    this.pos = 0;
    this.length = this.buf.length;
}

Pbf.Varint  = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum
Pbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64
Pbf.Bytes   = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields
Pbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32

var SHIFT_LEFT_32 = (1 << 16) * (1 << 16),
    SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32,
    POW_2_63 = Math.pow(2, 63);

Pbf.prototype = {

    destroy: function() {
        this.buf = null;
    },

    // === READING =================================================================

    readFields: function(readField, result, end) {
        end = end || this.length;

        while (this.pos < end) {
            var val = this.readVarint(),
                tag = val >> 3,
                startPos = this.pos;

            readField(tag, result, this);

            if (this.pos === startPos) this.skip(val);
        }
        return result;
    },

    readMessage: function(readField, result) {
        return this.readFields(readField, result, this.readVarint() + this.pos);
    },

    readFixed32: function() {
        var val = this.buf.readUInt32LE(this.pos);
        this.pos += 4;
        return val;
    },

    readSFixed32: function() {
        var val = this.buf.readInt32LE(this.pos);
        this.pos += 4;
        return val;
    },

    // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)

    readFixed64: function() {
        var val = this.buf.readUInt32LE(this.pos) + this.buf.readUInt32LE(this.pos + 4) * SHIFT_LEFT_32;
        this.pos += 8;
        return val;
    },

    readSFixed64: function() {
        var val = this.buf.readUInt32LE(this.pos) + this.buf.readInt32LE(this.pos + 4) * SHIFT_LEFT_32;
        this.pos += 8;
        return val;
    },

    readFloat: function() {
        var val = this.buf.readFloatLE(this.pos);
        this.pos += 4;
        return val;
    },

    readDouble: function() {
        var val = this.buf.readDoubleLE(this.pos);
        this.pos += 8;
        return val;
    },

    readVarint: function() {
        var buf = this.buf,
            val, b;

        b = buf[this.pos++]; val  =  b & 0x7f;        if (b < 0x80) return val;
        b = buf[this.pos++]; val |= (b & 0x7f) << 7;  if (b < 0x80) return val;
        b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;
        b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;

        return readVarintRemainder(val, this);
    },

    readVarint64: function() {
        var startPos = this.pos,
            val = this.readVarint();

        if (val < POW_2_63) return val;

        var pos = this.pos - 2;
        while (this.buf[pos] === 0xff) pos--;
        if (pos < startPos) pos = startPos;

        val = 0;
        for (var i = 0; i < pos - startPos + 1; i++) {
            var b = ~this.buf[startPos + i] & 0x7f;
            val += i < 4 ? b << i * 7 : b * Math.pow(2, i * 7);
        }

        return -val - 1;
    },

    readSVarint: function() {
        var num = this.readVarint();
        return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding
    },

    readBoolean: function() {
        return Boolean(this.readVarint());
    },

    readString: function() {
        var end = this.readVarint() + this.pos,
            str = this.buf.toString('utf8', this.pos, end);
        this.pos = end;
        return str;
    },

    readBytes: function() {
        var end = this.readVarint() + this.pos,
            buffer = this.buf.slice(this.pos, end);
        this.pos = end;
        return buffer;
    },

    // verbose for performance reasons; doesn't affect gzipped size

    readPackedVarint: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readVarint());
        return arr;
    },
    readPackedSVarint: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readSVarint());
        return arr;
    },
    readPackedBoolean: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readBoolean());
        return arr;
    },
    readPackedFloat: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readFloat());
        return arr;
    },
    readPackedDouble: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readDouble());
        return arr;
    },
    readPackedFixed32: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readFixed32());
        return arr;
    },
    readPackedSFixed32: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readSFixed32());
        return arr;
    },
    readPackedFixed64: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readFixed64());
        return arr;
    },
    readPackedSFixed64: function() {
        var end = this.readVarint() + this.pos, arr = [];
        while (this.pos < end) arr.push(this.readSFixed64());
        return arr;
    },

    skip: function(val) {
        var type = val & 0x7;
        if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}
        else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;
        else if (type === Pbf.Fixed32) this.pos += 4;
        else if (type === Pbf.Fixed64) this.pos += 8;
        else throw new Error('Unimplemented type: ' + type);
    },

    // === WRITING =================================================================

    writeTag: function(tag, type) {
        this.writeVarint((tag << 3) | type);
    },

    realloc: function(min) {
        var length = this.length || 16;

        while (length < this.pos + min) length *= 2;

        if (length !== this.length) {
            var buf = new Buffer(length);
            this.buf.copy(buf);
            this.buf = buf;
            this.length = length;
        }
    },

    finish: function() {
        this.length = this.pos;
        this.pos = 0;
        return this.buf.slice(0, this.length);
    },

    writeFixed32: function(val) {
        this.realloc(4);
        this.buf.writeUInt32LE(val, this.pos);
        this.pos += 4;
    },

    writeSFixed32: function(val) {
        this.realloc(4);
        this.buf.writeInt32LE(val, this.pos);
        this.pos += 4;
    },

    writeFixed64: function(val) {
        this.realloc(8);
        this.buf.writeInt32LE(val & -1, this.pos);
        this.buf.writeUInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
        this.pos += 8;
    },

    writeSFixed64: function(val) {
        this.realloc(8);
        this.buf.writeInt32LE(val & -1, this.pos);
        this.buf.writeInt32LE(Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);
        this.pos += 8;
    },

    writeVarint: function(val) {
        val = +val;

        if (val > 0xfffffff) {
            writeBigVarint(val, this);
            return;
        }

        this.realloc(4);

        this.buf[this.pos++] =           val & 0x7f  | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
        this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;
        this.buf[this.pos++] =   (val >>> 7) & 0x7f;
    },

    writeSVarint: function(val) {
        this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);
    },

    writeBoolean: function(val) {
        this.writeVarint(Boolean(val));
    },

    writeString: function(str) {
        str = String(str);
        var bytes = Buffer.byteLength(str);
        this.writeVarint(bytes);
        this.realloc(bytes);
        this.buf.write(str, this.pos);
        this.pos += bytes;
    },

    writeFloat: function(val) {
        this.realloc(4);
        this.buf.writeFloatLE(val, this.pos);
        this.pos += 4;
    },

    writeDouble: function(val) {
        this.realloc(8);
        this.buf.writeDoubleLE(val, this.pos);
        this.pos += 8;
    },

    writeBytes: function(buffer) {
        var len = buffer.length;
        this.writeVarint(len);
        this.realloc(len);
        for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];
    },

    writeRawMessage: function(fn, obj) {
        this.pos++; // reserve 1 byte for short message length

        // write the message directly to the buffer and see how much was written
        var startPos = this.pos;
        fn(obj, this);
        var len = this.pos - startPos;

        if (len >= 0x80) reallocForRawMessage(startPos, len, this);

        // finally, write the message length in the reserved place and restore the position
        this.pos = startPos - 1;
        this.writeVarint(len);
        this.pos += len;
    },

    writeMessage: function(tag, fn, obj) {
        this.writeTag(tag, Pbf.Bytes);
        this.writeRawMessage(fn, obj);
    },

    writePackedVarint:   function(tag, arr) { this.writeMessage(tag, writePackedVarint, arr);   },
    writePackedSVarint:  function(tag, arr) { this.writeMessage(tag, writePackedSVarint, arr);  },
    writePackedBoolean:  function(tag, arr) { this.writeMessage(tag, writePackedBoolean, arr);  },
    writePackedFloat:    function(tag, arr) { this.writeMessage(tag, writePackedFloat, arr);    },
    writePackedDouble:   function(tag, arr) { this.writeMessage(tag, writePackedDouble, arr);   },
    writePackedFixed32:  function(tag, arr) { this.writeMessage(tag, writePackedFixed32, arr);  },
    writePackedSFixed32: function(tag, arr) { this.writeMessage(tag, writePackedSFixed32, arr); },
    writePackedFixed64:  function(tag, arr) { this.writeMessage(tag, writePackedFixed64, arr);  },
    writePackedSFixed64: function(tag, arr) { this.writeMessage(tag, writePackedSFixed64, arr); },

    writeBytesField: function(tag, buffer) {
        this.writeTag(tag, Pbf.Bytes);
        this.writeBytes(buffer);
    },
    writeFixed32Field: function(tag, val) {
        this.writeTag(tag, Pbf.Fixed32);
        this.writeFixed32(val);
    },
    writeSFixed32Field: function(tag, val) {
        this.writeTag(tag, Pbf.Fixed32);
        this.writeSFixed32(val);
    },
    writeFixed64Field: function(tag, val) {
        this.writeTag(tag, Pbf.Fixed64);
        this.writeFixed64(val);
    },
    writeSFixed64Field: function(tag, val) {
        this.writeTag(tag, Pbf.Fixed64);
        this.writeSFixed64(val);
    },
    writeVarintField: function(tag, val) {
        this.writeTag(tag, Pbf.Varint);
        this.writeVarint(val);
    },
    writeSVarintField: function(tag, val) {
        this.writeTag(tag, Pbf.Varint);
        this.writeSVarint(val);
    },
    writeStringField: function(tag, str) {
        this.writeTag(tag, Pbf.Bytes);
        this.writeString(str);
    },
    writeFloatField: function(tag, val) {
        this.writeTag(tag, Pbf.Fixed32);
        this.writeFloat(val);
    },
    writeDoubleField: function(tag, val) {
        this.writeTag(tag, Pbf.Fixed64);
        this.writeDouble(val);
    },
    writeBooleanField: function(tag, val) {
        this.writeVarintField(tag, Boolean(val));
    }
};

function readVarintRemainder(val, pbf) {
    var buf = pbf.buf, b;

    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x10000000;         if (b < 0x80) return val;
    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x800000000;        if (b < 0x80) return val;
    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x40000000000;      if (b < 0x80) return val;
    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x2000000000000;    if (b < 0x80) return val;
    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x100000000000000;  if (b < 0x80) return val;
    b = buf[pbf.pos++]; val += (b & 0x7f) * 0x8000000000000000; if (b < 0x80) return val;

    throw new Error('Expected varint not more than 10 bytes');
}

function writeBigVarint(val, pbf) {
    pbf.realloc(10);

    var maxPos = pbf.pos + 10;

    while (val >= 1) {
        if (pbf.pos >= maxPos) throw new Error('Given varint doesn\'t fit into 10 bytes');
        var b = val & 0xff;
        pbf.buf[pbf.pos++] = b | (val >= 0x80 ? 0x80 : 0);
        val /= 0x80;
    }
}

function reallocForRawMessage(startPos, len, pbf) {
    var extraLen =
        len <= 0x3fff ? 1 :
        len <= 0x1fffff ? 2 :
        len <= 0xfffffff ? 3 : Math.ceil(Math.log(len) / (Math.LN2 * 7));

    // if 1 byte isn't enough for encoding message length, shift the data to the right
    pbf.realloc(extraLen);
    for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];
}

function writePackedVarint(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]);   }
function writePackedSVarint(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]);  }
function writePackedFloat(arr, pbf)    { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]);    }
function writePackedDouble(arr, pbf)   { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]);   }
function writePackedBoolean(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]);  }
function writePackedFixed32(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]);  }
function writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }
function writePackedFixed64(arr, pbf)  { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]);  }
function writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./buffer":464}],466:[function(require,module,exports){
"use strict"

module.exports = permutationSign

var BRUTE_FORCE_CUTOFF = 32

var pool = require("typedarray-pool")

function permutationSign(p) {
  var n = p.length
  if(n < BRUTE_FORCE_CUTOFF) {
    //Use quadratic algorithm for small n
    var sgn = 1
    for(var i=0; i<n; ++i) {
      for(var j=0; j<i; ++j) {
        if(p[i] < p[j]) {
          sgn = -sgn
        } else if(p[i] === p[j]) {
          return 0
        }
      }
    }
    return sgn
  } else {
    //Otherwise use linear time algorithm
    var visited = pool.mallocUint8(n)
    for(var i=0; i<n; ++i) {
      visited[i] = 0
    }
    var sgn = 1
    for(var i=0; i<n; ++i) {
      if(!visited[i]) {
        var count = 1
        visited[i] = 1
        for(var j=p[i]; j!==i; j=p[j]) {
          if(visited[j]) {
            pool.freeUint8(visited)
            return 0
          }
          count += 1
          visited[j] = 1
        }
        if(!(count & 1)) {
          sgn = -sgn
        }
      }
    }
    pool.freeUint8(visited)
    return sgn
  }
}
},{"typedarray-pool":992}],467:[function(require,module,exports){
"use strict"

var pool = require("typedarray-pool")
var inverse = require("invert-permutation")

function rank(permutation) {
  var n = permutation.length
  switch(n) {
    case 0:
    case 1:
      return 0
    case 2:
      return permutation[1]
    default:
      break
  }
  var p = pool.mallocUint32(n)
  var pinv = pool.mallocUint32(n)
  var r = 0, s, t, i
  inverse(permutation, pinv)
  for(i=0; i<n; ++i) {
    p[i] = permutation[i]
  }
  for(i=n-1; i>0; --i) {
    t = pinv[i]
    s = p[i]
    p[i] = p[t]
    p[t] = s
    pinv[i] = pinv[s]
    pinv[s] = t
    r = (r + s) * i
  }
  pool.freeUint32(pinv)
  pool.freeUint32(p)
  return r
}

function unrank(n, r, p) {
  switch(n) {
    case 0:
      if(p) { return p }
      return []
    case 1:
      if(p) {
        p[0] = 0
        return p
      } else {
        return [0]
      }
    case 2:
      if(p) {
        if(r) {
          p[0] = 0
          p[1] = 1
        } else {
          p[0] = 1
          p[1] = 0
        }
        return p
      } else {
        return r ? [0,1] : [1,0]
      }
    default:
      break
  }
  p = p || new Array(n)
  var s, t, i, nf=1
  p[0] = 0
  for(i=1; i<n; ++i) {
    p[i] = i
    nf = (nf*i)|0
  }
  for(i=n-1; i>0; --i) {
    s = (r / nf)|0
    r = (r - s * nf)|0
    nf = (nf / i)|0
    t = p[i]|0
    p[i] = p[s]|0
    p[s] = t|0
  }
  return p
}

exports.rank = rank
exports.unrank = unrank

},{"invert-permutation":268,"typedarray-pool":992}],468:[function(require,module,exports){
"use strict"

module.exports = planarDual

var compareAngle = require("compare-angle")

function planarDual(cells, positions) {

  var numVertices = positions.length|0
  var numEdges = cells.length
  var adj = [new Array(numVertices), new Array(numVertices)]
  for(var i=0; i<numVertices; ++i) {
    adj[0][i] = []
    adj[1][i] = []
  }
  for(var i=0; i<numEdges; ++i) {
    var c = cells[i]
    adj[0][c[0]].push(c)
    adj[1][c[1]].push(c)
  }

  var cycles = []

  //Add isolated vertices as trivial case
  for(var i=0; i<numVertices; ++i) {
    if(adj[0][i].length + adj[1][i].length === 0) {
      cycles.push( [i] )
    }
  }

  //Remove a half edge
  function cut(c, i) {
    var a = adj[i][c[i]]
    a.splice(a.indexOf(c), 1)
  }

  //Find next vertex and cut edge
  function next(a, b, noCut) {
    var nextCell, nextVertex, nextDir
    for(var i=0; i<2; ++i) {
      if(adj[i][b].length > 0) {
        nextCell = adj[i][b][0]
        nextDir = i
        break
      }
    }
    nextVertex = nextCell[nextDir^1]

    for(var dir=0; dir<2; ++dir) {
      var nbhd = adj[dir][b]
      for(var k=0; k<nbhd.length; ++k) {
        var e = nbhd[k]
        var p = e[dir^1]
        var cmp = compareAngle(
            positions[a], 
            positions[b], 
            positions[nextVertex],
            positions[p])
        if(cmp > 0) {
          nextCell = e
          nextVertex = p
          nextDir = dir
        }
      }
    }
    if(noCut) {
      return nextVertex
    }
    if(nextCell) {
      cut(nextCell, nextDir)
    }
    return nextVertex
  }

  function extractCycle(v, dir) {
    var e0 = adj[dir][v][0]
    var cycle = [v]
    cut(e0, dir)
    var u = e0[dir^1]
    var d0 = dir
    while(true) {
      while(u !== v) {
        cycle.push(u)
        u = next(cycle[cycle.length-2], u, false)
      }
      if(adj[0][v].length + adj[1][v].length === 0) {
        break
      }
      var a = cycle[cycle.length-1]
      var b = v
      var c = cycle[1]
      var d = next(a, b, true)
      if(compareAngle(positions[a], positions[b], positions[c], positions[d]) < 0) {
        break
      }
      cycle.push(v)
      u = next(a, b)
    }
    return cycle
  }

  function shouldGlue(pcycle, ncycle) {
    return (ncycle[1] === ncycle[ncycle.length-1])
  }

  for(var i=0; i<numVertices; ++i) {
    for(var j=0; j<2; ++j) {
      var pcycle = []
      while(adj[j][i].length > 0) {
        var ni = adj[0][i].length
        var ncycle = extractCycle(i,j)
        if(shouldGlue(pcycle, ncycle)) {
          //Glue together trivial cycles
          pcycle.push.apply(pcycle, ncycle)
        } else {
          if(pcycle.length > 0) {
            cycles.push(pcycle)
          }
          pcycle = ncycle
        }
      }
      if(pcycle.length > 0) {
        cycles.push(pcycle)
      }
    }
  }

  //Combine paths and loops together
  return cycles
}
},{"compare-angle":63}],469:[function(require,module,exports){
'use strict'

module.exports = trimLeaves

var e2a = require('edges-to-adjacency-list')

function trimLeaves(edges, positions) {
  var adj = e2a(edges, positions.length)
  var live = new Array(positions.length)
  var nbhd = new Array(positions.length)

  var dead = []
  for(var i=0; i<positions.length; ++i) {
    var count = adj[i].length
    nbhd[i] = count
    live[i] = true
    if(count <= 1) {
      dead.push(i)
    }
  }

  while(dead.length > 0) {
    var v = dead.pop()
    live[v] = false
    var n = adj[v]
    for(var i=0; i<n.length; ++i) {
      var u = n[i]
      if(--nbhd[u] === 0) {
        dead.push(u)
      }
    }
  }

  var newIndex = new Array(positions.length)
  var npositions = []
  for(var i=0; i<positions.length; ++i) {
    if(live[i]) {
      var v = npositions.length
      newIndex[i] = v
      npositions.push(positions[i])
    } else {
      newIndex[i] = -1
    }
  }

  var nedges = []
  for(var i=0; i<edges.length; ++i) {
    var e = edges[i]
    if(live[e[0]] && live[e[1]]) {
      nedges.push([ newIndex[e[0]], newIndex[e[1]] ])
    }
  }
  
  return [ nedges, npositions ]
}
},{"edges-to-adjacency-list":92}],470:[function(require,module,exports){
'use strict'

module.exports = planarGraphToPolyline

var e2a = require('edges-to-adjacency-list')
var planarDual = require('planar-dual')
var preprocessPolygon = require('point-in-big-polygon')
var twoProduct = require('two-product')
var robustSum = require('robust-sum')
var uniq = require('uniq')
var trimLeaves = require('./lib/trim-leaves')

function makeArray(length, fill) {
  var result = new Array(length)
  for(var i=0; i<length; ++i) {
    result[i] = fill
  }
  return result
}

function makeArrayOfArrays(length) {
  var result = new Array(length)
  for(var i=0; i<length; ++i) {
    result[i] = []
  }
  return result
}


function planarGraphToPolyline(edges, positions) {

  //Trim leaves
  var result = trimLeaves(edges, positions)
  edges = result[0]
  positions = result[1]

  var numVertices = positions.length
  var numEdges = edges.length

  //Calculate adjacency list, check manifold
  var adj = e2a(edges, positions.length)
  for(var i=0; i<numVertices; ++i) {
    if(adj[i].length % 2 === 1) {
      throw new Error('planar-graph-to-polyline: graph must be manifold')
    }
  }

  //Get faces
  var faces = planarDual(edges, positions)

  //Check orientation of a polygon using exact arithmetic
  function ccw(c) {
    var n = c.length
    var area = [0]
    for(var j=0; j<n; ++j) {
      var a = positions[c[j]]
      var b = positions[c[(j+1)%n]]
      var t00 = twoProduct(-a[0], a[1])
      var t01 = twoProduct(-a[0], b[1])
      var t10 = twoProduct( b[0], a[1])
      var t11 = twoProduct( b[0], b[1])
      area = robustSum(area, robustSum(robustSum(t00, t01), robustSum(t10, t11)))
    }
    return area[area.length-1] > 0
  }

  //Extract all clockwise faces
  faces = faces.filter(ccw)

  //Detect which loops are contained in one another to handle parent-of relation
  var numFaces = faces.length
  var parent = new Array(numFaces)
  var containment = new Array(numFaces)
  for(var i=0; i<numFaces; ++i) {
    parent[i] = i
    var row = new Array(numFaces)
    var loopVertices = faces[i].map(function(v) {
      return positions[v]
    })
    var pmc = preprocessPolygon([loopVertices])
    var count = 0
    outer:
    for(var j=0; j<numFaces; ++j) {
      row[j] = 0
      if(i === j) {
        continue
      }
      var c = faces[j]
      var n = c.length
      for(var k=0; k<n; ++k) {
        var d = pmc(positions[c[k]])
        if(d !== 0) {
          if(d < 0) {
            row[j] = 1
            count += 1
          }
          continue outer
        }
      }
      row[j] = 1
      count += 1
    }
    containment[i] = [count, i, row]
  }
  containment.sort(function(a,b) {
    return b[0] - a[0]
  })
  for(var i=0; i<numFaces; ++i) {
    var row = containment[i]
    var idx = row[1]
    var children = row[2]
    for(var j=0; j<numFaces; ++j) {
      if(children[j]) {
        parent[j] = idx
      }
    }
  }

  //Initialize face adjacency list
  var fadj = makeArrayOfArrays(numFaces)
  for(var i=0; i<numFaces; ++i) {
    fadj[i].push(parent[i])
    fadj[parent[i]].push(i)
  }

  //Build adjacency matrix for edges
  var edgeAdjacency = {}
  var internalVertices = makeArray(numVertices, false)
  for(var i=0; i<numFaces; ++i) {
    var c = faces[i]
    var n = c.length
    for(var j=0; j<n; ++j) {
      var a = c[j]
      var b = c[(j+1)%n]
      var key = Math.min(a,b) + ":" + Math.max(a,b)
      if(key in edgeAdjacency) {
        var neighbor = edgeAdjacency[key]
        fadj[neighbor].push(i)
        fadj[i].push(neighbor)
        internalVertices[a] = internalVertices[b] = true
      } else {
        edgeAdjacency[key] = i
      }
    }
  }

  function sharedBoundary(c) {
    var n = c.length
    for(var i=0; i<n; ++i) {
      if(!internalVertices[c[i]]) {
        return false
      }
    }
    return true
  }

  var toVisit = []
  var parity = makeArray(numFaces, -1)
  for(var i=0; i<numFaces; ++i) {
    if(parent[i] === i && !sharedBoundary(faces[i])) {
      toVisit.push(i)
      parity[i] = 0
    } else {
      parity[i] = -1
    }
  }

  //Using face adjacency, classify faces as in/out
  var result = []
  while(toVisit.length > 0) {
    var top = toVisit.pop()
    var nbhd = fadj[top]
    uniq(nbhd, function(a,b) {
      return a-b
    })
    var nnbhr = nbhd.length
    var p = parity[top]
    var polyline
    if(p === 0) {
      var c = faces[top]
      polyline = [c]
    }
    for(var i=0; i<nnbhr; ++i) {
      var f = nbhd[i]
      if(parity[f] >= 0) {
        continue
      }
      parity[f] = p^1
      toVisit.push(f)
      if(p === 0) {
        var c = faces[f]
        if(!sharedBoundary(c)) {
          c.reverse()
          polyline.push(c)
        }
      }
    }
    if(p === 0) {
      result.push(polyline)
    }
  }

  return result
}
},{"./lib/trim-leaves":469,"edges-to-adjacency-list":92,"planar-dual":468,"point-in-big-polygon":920,"robust-sum":959,"two-product":990,"uniq":994}],471:[function(require,module,exports){
'use strict';

var Lib = require('../src/lib');
var rules = {
    "X,X div": "font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;",
    "X input,X button": "font-family:'Open Sans', verdana, arial, sans-serif;",
    "X input:focus,X button:focus": "outline:none;",
    "X a": "text-decoration:none;",
    "X a:hover": "text-decoration:none;",
    "X .crisp": "shape-rendering:crispEdges;",
    "X .user-select-none": "-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;-o-user-select:none;user-select:none;",
    "X svg": "overflow:hidden;",
    "X svg a": "fill:#447adb;",
    "X svg a:hover": "fill:#3c6dc5;",
    "X .main-svg": "position:absolute;top:0;left:0;pointer-events:none;",
    "X .main-svg .draglayer": "pointer-events:all;",
    "X .cursor-pointer": "cursor:pointer;",
    "X .cursor-crosshair": "cursor:crosshair;",
    "X .cursor-move": "cursor:move;",
    "X .cursor-col-resize": "cursor:col-resize;",
    "X .cursor-row-resize": "cursor:row-resize;",
    "X .cursor-ns-resize": "cursor:ns-resize;",
    "X .cursor-ew-resize": "cursor:ew-resize;",
    "X .cursor-sw-resize": "cursor:sw-resize;",
    "X .cursor-s-resize": "cursor:s-resize;",
    "X .cursor-se-resize": "cursor:se-resize;",
    "X .cursor-w-resize": "cursor:w-resize;",
    "X .cursor-e-resize": "cursor:e-resize;",
    "X .cursor-nw-resize": "cursor:nw-resize;",
    "X .cursor-n-resize": "cursor:n-resize;",
    "X .cursor-ne-resize": "cursor:ne-resize;",
    "X .modebar": "position:absolute;top:2px;right:2px;z-index:1001;background:rgba(255,255,255,0.7);",
    "X .modebar--hover": "opacity:0;-webkit-transition:opacity 0.3s ease 0s;-moz-transition:opacity 0.3s ease 0s;-ms-transition:opacity 0.3s ease 0s;-o-transition:opacity 0.3s ease 0s;transition:opacity 0.3s ease 0s;",
    "X:hover .modebar--hover": "opacity:1;",
    "X .modebar-group": "float:left;display:inline-block;box-sizing:border-box;margin-left:8px;position:relative;vertical-align:middle;white-space:nowrap;",
    "X .modebar-group:first-child": "margin-left:0px;",
    "X .modebar-btn": "position:relative;font-size:16px;padding:3px 4px;cursor:pointer;line-height:normal;box-sizing:border-box;",
    "X .modebar-btn svg": "position:relative;top:2px;",
    "X .modebar-btn path": "fill:rgba(0,31,95,0.3);",
    "X .modebar-btn.active path,X .modebar-btn:hover path": "fill:rgba(0,22,72,0.5);",
    "X .modebar-btn.modebar-btn--logo": "padding:3px 1px;",
    "X .modebar-btn.modebar-btn--logo path": "fill:#447adb !important;",
    "X [data-title]:before,X [data-title]:after": "position:absolute;-webkit-transform:translate3d(0, 0, 0);-moz-transform:translate3d(0, 0, 0);-ms-transform:translate3d(0, 0, 0);-o-transform:translate3d(0, 0, 0);transform:translate3d(0, 0, 0);display:none;opacity:0;z-index:1001;pointer-events:none;top:110%;right:50%;",
    "X [data-title]:hover:before,X [data-title]:hover:after": "display:block;opacity:1;",
    "X [data-title]:before": "content:'';position:absolute;background:transparent;border:6px solid transparent;z-index:1002;margin-top:-12px;border-bottom-color:#69738a;margin-right:-6px;",
    "X [data-title]:after": "content:attr(data-title);background:#69738a;color:white;padding:8px 10px;font-size:12px;line-height:12px;white-space:nowrap;margin-right:-18px;border-radius:2px;",
    "X .select-outline": "fill:none;stroke-width:1;shape-rendering:crispEdges;",
    "X .select-outline-1": "stroke:white;",
    "X .select-outline-2": "stroke:black;stroke-dasharray:2px 2px;",
    Y: "font-family:'Open Sans';position:fixed;top:50px;right:20px;z-index:10000;font-size:10pt;max-width:180px;",
    "Y p": "margin:0;",
    "Y .notifier-note": "min-width:180px;max-width:250px;border:1px solid #fff;z-index:3000;margin:0;background-color:#8c97af;background-color:rgba(140,151,175,0.9);color:#fff;padding:10px;",
    "Y .notifier-close": "color:#fff;opacity:0.8;float:right;padding:0 5px;background:none;border:none;font-size:20px;font-weight:bold;line-height:20px;",
    "Y .notifier-close:hover": "color:#444;text-decoration:none;cursor:pointer;"
};

for(var selector in rules) {
    var fullSelector = selector.replace(/^,/,' ,')
        .replace(/X/g, '.js-plotly-plot .plotly')
        .replace(/Y/g, '.plotly-notifier');
    Lib.addStyleRule(fullSelector, rules[selector]);
}

},{"../src/lib":610}],472:[function(require,module,exports){
'use strict';

module.exports = {
    'undo': {
        'width': 857.1,
        'path': 'm857 350q0-87-34-166t-91-137-137-92-166-34q-96 0-183 41t-147 114q-4 6-4 13t5 11l76 77q6 5 14 5 9-1 13-7 41-53 100-82t126-29q58 0 110 23t92 61 61 91 22 111-22 111-61 91-92 61-110 23q-55 0-105-20t-90-57l77-77q17-16 8-38-10-23-33-23h-250q-15 0-25 11t-11 25v250q0 24 22 33 22 10 39-8l72-72q60 57 137 88t159 31q87 0 166-34t137-92 91-137 34-166z',
        'ascent': 850,
        'descent': -150
    },
    'home': {
        'width': 928.6,
        'path': 'm786 296v-267q0-15-11-26t-25-10h-214v214h-143v-214h-214q-15 0-25 10t-11 26v267q0 1 0 2t0 2l321 264 321-264q1-1 1-4z m124 39l-34-41q-5-5-12-6h-2q-7 0-12 3l-386 322-386-322q-7-4-13-4-7 2-12 7l-35 41q-4 5-3 13t6 12l401 334q18 15 42 15t43-15l136-114v109q0 8 5 13t13 5h107q8 0 13-5t5-13v-227l122-102q5-5 6-12t-4-13z',
        'ascent': 850,
        'descent': -150
    },
    'camera-retro': {
        'width': 1000,
        'path': 'm518 386q0 8-5 13t-13 5q-37 0-63-27t-26-63q0-8 5-13t13-5 12 5 5 13q0 23 16 38t38 16q8 0 13 5t5 13z m125-73q0-59-42-101t-101-42-101 42-42 101 42 101 101 42 101-42 42-101z m-572-320h858v71h-858v-71z m643 320q0 89-62 152t-152 62-151-62-63-152 63-151 151-63 152 63 62 151z m-571 358h214v72h-214v-72z m-72-107h858v143h-462l-36-71h-360v-72z m929 143v-714q0-30-21-51t-50-21h-858q-29 0-50 21t-21 51v714q0 30 21 51t50 21h858q29 0 50-21t21-51z',
        'ascent': 850,
        'descent': -150
    },
    'zoombox': {
        'width': 1000,
        'path': 'm1000-25l-250 251c40 63 63 138 63 218 0 224-182 406-407 406-224 0-406-182-406-406s183-406 407-406c80 0 155 22 218 62l250-250 125 125z m-812 250l0 438 437 0 0-438-437 0z m62 375l313 0 0-312-313 0 0 312z',
        'ascent': 850,
        'descent': -150
    },
    'pan': {
        'width': 1000,
        'path': 'm1000 350l-187 188 0-125-250 0 0 250 125 0-188 187-187-187 125 0 0-250-250 0 0 125-188-188 186-187 0 125 252 0 0-250-125 0 187-188 188 188-125 0 0 250 250 0 0-126 187 188z',
        'ascent': 850,
        'descent': -150
    },
    'zoom_plus': {
        'width': 1000,
        'path': 'm1 787l0-875 875 0 0 875-875 0z m687-500l-187 0 0-187-125 0 0 187-188 0 0 125 188 0 0 187 125 0 0-187 187 0 0-125z',
        'ascent': 850,
        'descent': -150
    },
    'zoom_minus': {
        'width': 1000,
        'path': 'm0 788l0-876 875 0 0 876-875 0z m688-500l-500 0 0 125 500 0 0-125z',
        'ascent': 850,
        'descent': -150
    },
    'autoscale': {
        'width': 1000,
        'path': 'm250 850l-187 0-63 0 0-62 0-188 63 0 0 188 187 0 0 62z m688 0l-188 0 0-62 188 0 0-188 62 0 0 188 0 62-62 0z m-875-938l0 188-63 0 0-188 0-62 63 0 187 0 0 62-187 0z m875 188l0-188-188 0 0-62 188 0 62 0 0 62 0 188-62 0z m-125 188l-1 0-93-94-156 156 156 156 92-93 2 0 0 250-250 0 0-2 93-92-156-156-156 156 94 92 0 2-250 0 0-250 0 0 93 93 157-156-157-156-93 94 0 0 0-250 250 0 0 0-94 93 156 157 156-157-93-93 0 0 250 0 0 250z',
        'ascent': 850,
        'descent': -150
    },
    'tooltip_basic': {
        'width': 1500,
        'path': 'm375 725l0 0-375-375 375-374 0-1 1125 0 0 750-1125 0z',
        'ascent': 850,
        'descent': -150
    },
    'tooltip_compare': {
        'width': 1125,
        'path': 'm187 786l0 2-187-188 188-187 0 0 937 0 0 373-938 0z m0-499l0 1-187-188 188-188 0 0 937 0 0 376-938-1z',
        'ascent': 850,
        'descent': -150
    },
    'plotlylogo': {
        'width': 1542,
        'path': 'm0-10h182v-140h-182v140z m228 146h183v-286h-183v286z m225 714h182v-1000h-182v1000z m225-285h182v-715h-182v715z m225 142h183v-857h-183v857z m231-428h182v-429h-182v429z m225-291h183v-138h-183v138z',
        'ascent': 850,
        'descent': -150
    },
    'z-axis': {
        'width': 1000,
        'path': 'm833 5l-17 108v41l-130-65 130-66c0 0 0 38 0 39 0-1 36-14 39-25 4-15-6-22-16-30-15-12-39-16-56-20-90-22-187-23-279-23-261 0-341 34-353 59 3 60 228 110 228 110-140-8-351-35-351-116 0-120 293-142 474-142 155 0 477 22 477 142 0 50-74 79-163 96z m-374 94c-58-5-99-21-99-40 0-24 65-43 144-43 79 0 143 19 143 43 0 19-42 34-98 40v216h87l-132 135-133-135h88v-216z m167 515h-136v1c16 16 31 34 46 52l84 109v54h-230v-71h124v-1c-16-17-28-32-44-51l-89-114v-51h245v72z',
        'ascent': 850,
        'descent': -150
    },
    '3d_rotate': {
        'width': 1000,
        'path': 'm922 660c-5 4-9 7-14 11-359 263-580-31-580-31l-102 28 58-400c0 1 1 1 2 2 118 108 351 249 351 249s-62 27-100 42c88 83 222 183 347 122 16-8 30-17 44-27-2 1-4 2-6 4z m36-329c0 0 64 229-88 296-62 27-124 14-175-11 157-78 225-208 249-266 8-19 11-31 11-31 2 5 6 15 11 32-5-13-8-20-8-20z m-775-239c70-31 117-50 198-32-121 80-199 346-199 346l-96-15-58-12c0 0 55-226 155-287z m603 133l-317-139c0 0 4-4 19-14 7-5 24-15 24-15s-177-147-389 4c235-287 536-112 536-112l31-22 100 299-4-1z m-298-153c6-4 14-9 24-15 0 0-17 10-24 15z',
        'ascent': 850,
        'descent': -150
    },
    'camera': {
        'width': 1000,
        'path': 'm500 450c-83 0-150-67-150-150 0-83 67-150 150-150 83 0 150 67 150 150 0 83-67 150-150 150z m400 150h-120c-16 0-34 13-39 29l-31 93c-6 15-23 28-40 28h-340c-16 0-34-13-39-28l-31-94c-6-15-23-28-40-28h-120c-55 0-100-45-100-100v-450c0-55 45-100 100-100h800c55 0 100 45 100 100v450c0 55-45 100-100 100z m-400-550c-138 0-250 112-250 250 0 138 112 250 250 250 138 0 250-112 250-250 0-138-112-250-250-250z m365 380c-19 0-35 16-35 35 0 19 16 35 35 35 19 0 35-16 35-35 0-19-16-35-35-35z',
        'ascent': 850,
        'descent': -150
    },
    'movie': {
        'width': 1000,
        'path': 'm938 413l-188-125c0 37-17 71-44 94 64 38 107 107 107 187 0 121-98 219-219 219-121 0-219-98-219-219 0-61 25-117 66-156h-115c30 33 49 76 49 125 0 103-84 187-187 187s-188-84-188-187c0-57 26-107 65-141-38-22-65-62-65-109v-250c0-70 56-126 125-126h500c69 0 125 56 125 126l188-126c34 0 62 28 62 63v375c0 35-28 63-62 63z m-750 0c-69 0-125 56-125 125s56 125 125 125 125-56 125-125-56-125-125-125z m406-1c-87 0-157 70-157 157 0 86 70 156 157 156s156-70 156-156-70-157-156-157z',
        'ascent': 850,
        'descent': -150
    },
    'question': {
        'width': 857.1,
        'path': 'm500 82v107q0 8-5 13t-13 5h-107q-8 0-13-5t-5-13v-107q0-8 5-13t13-5h107q8 0 13 5t5 13z m143 375q0 49-31 91t-77 65-95 23q-136 0-207-119-9-14 4-24l74-55q4-4 10-4 9 0 14 7 30 38 48 51 19 14 48 14 27 0 48-15t21-33q0-21-11-34t-38-25q-35-16-65-48t-29-70v-20q0-8 5-13t13-5h107q8 0 13 5t5 13q0 10 12 27t30 28q18 10 28 16t25 19 25 27 16 34 7 45z m214-107q0-117-57-215t-156-156-215-58-216 58-155 156-58 215 58 215 155 156 216 58 215-58 156-156 57-215z',
        'ascent': 850,
        'descent': -150
    },
    'disk': {
        'width': 857.1,
        'path': 'm214-7h429v214h-429v-214z m500 0h72v500q0 8-6 21t-11 20l-157 156q-5 6-19 12t-22 5v-232q0-22-15-38t-38-16h-322q-22 0-37 16t-16 38v232h-72v-714h72v232q0 22 16 38t37 16h465q22 0 38-16t15-38v-232z m-214 518v178q0 8-5 13t-13 5h-107q-7 0-13-5t-5-13v-178q0-8 5-13t13-5h107q7 0 13 5t5 13z m357-18v-518q0-22-15-38t-38-16h-750q-23 0-38 16t-16 38v750q0 22 16 38t38 16h517q23 0 50-12t42-26l156-157q16-15 27-42t11-49z',
        'ascent': 850,
        'descent': -150
    },
    'lasso': {
        'width': 1031,
        'path': 'm1018 538c-36 207-290 336-568 286-277-48-473-256-436-463 10-57 36-108 76-151-13-66 11-137 68-183 34-28 75-41 114-42l-55-70 0 0c-2-1-3-2-4-3-10-14-8-34 5-45 14-11 34-8 45 4 1 1 2 3 2 5l0 0 113 140c16 11 31 24 45 40 4 3 6 7 8 11 48-3 100 0 151 9 278 48 473 255 436 462z m-624-379c-80 14-149 48-197 96 42 42 109 47 156 9 33-26 47-66 41-105z m-187-74c-19 16-33 37-39 60 50-32 109-55 174-68-42-25-95-24-135 8z m360 75c-34-7-69-9-102-8 8 62-16 128-68 170-73 59-175 54-244-5-9 20-16 40-20 61-28 159 121 317 333 354s407-60 434-217c28-159-121-318-333-355z',
        'ascent': 850,
        'descent': -150
    },
    'selectbox': {
        'width': 1000,
        'path': 'm0 850l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z m285 0l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z m-857-286l0-143 143 0 0 143-143 0z m857 0l0-143 143 0 0 143-143 0z m-857-285l0-143 143 0 0 143-143 0z m857 0l0-143 143 0 0 143-143 0z m-857-286l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z m285 0l0-143 143 0 0 143-143 0z m286 0l0-143 143 0 0 143-143 0z',
        'ascent': 850,
        'descent': -150
    }
};

},{}],473:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/bar');

},{"../src/traces/bar":731}],474:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/box');

},{"../src/traces/box":743}],475:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/components/calendars');

},{"../src/components/calendars":508}],476:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/candlestick');

},{"../src/traces/candlestick":751}],477:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/choropleth');

},{"../src/traces/choropleth":756}],478:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/contour');

},{"../src/traces/contour":765}],479:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/core');

},{"../src/core":596}],480:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/transforms/filter');

},{"../src/transforms/filter":896}],481:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/transforms/groupby');

},{"../src/transforms/groupby":897}],482:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/heatmap');

},{"../src/traces/heatmap":780}],483:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/heatmapgl');

},{"../src/traces/heatmapgl":789}],484:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/histogram');

},{"../src/traces/histogram":797}],485:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/histogram2d');

},{"../src/traces/histogram2d":802}],486:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/histogram2dcontour');

},{"../src/traces/histogram2dcontour":806}],487:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Plotly = require('./core');

// traces
Plotly.register([
    require('./bar'),
    require('./box'),
    require('./heatmap'),
    require('./histogram'),
    require('./histogram2d'),
    require('./histogram2dcontour'),
    require('./pie'),
    require('./contour'),
    require('./scatterternary'),

    require('./scatter3d'),
    require('./surface'),
    require('./mesh3d'),

    require('./scattergeo'),
    require('./choropleth'),

    require('./scattergl'),
    require('./pointcloud'),
    require('./heatmapgl'),

    require('./scattermapbox'),

    require('./ohlc'),
    require('./candlestick')
]);

// transforms
//
// Please note that all *transform* methods are executed before
// all *calcTransform* methods - which could possibly lead to
// unexpected results when applying multiple transforms of different types
// to a given trace.
//
// For more info, see:
// https://github.com/plotly/plotly.js/pull/978#pullrequestreview-2403353
//
Plotly.register([
    require('./filter'),
    require('./groupby')
]);

// components
Plotly.register([
    require('./calendars')
]);

module.exports = Plotly;

},{"./bar":473,"./box":474,"./calendars":475,"./candlestick":476,"./choropleth":477,"./contour":478,"./core":479,"./filter":480,"./groupby":481,"./heatmap":482,"./heatmapgl":483,"./histogram":484,"./histogram2d":485,"./histogram2dcontour":486,"./mesh3d":488,"./ohlc":489,"./pie":490,"./pointcloud":491,"./scatter3d":492,"./scattergeo":493,"./scattergl":494,"./scattermapbox":495,"./scatterternary":496,"./surface":497}],488:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/mesh3d');

},{"../src/traces/mesh3d":810}],489:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/ohlc');

},{"../src/traces/ohlc":815}],490:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/pie');

},{"../src/traces/pie":823}],491:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/pointcloud');

},{"../src/traces/pointcloud":832}],492:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/scatter3d');

},{"../src/traces/scatter3d":862}],493:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/scattergeo');

},{"../src/traces/scattergeo":868}],494:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/scattergl');

},{"../src/traces/scattergl":873}],495:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/scattermapbox');

},{"../src/traces/scattermapbox":880}],496:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/scatterternary');

},{"../src/traces/scatterternary":886}],497:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = require('../src/traces/surface');

},{"../src/traces/surface":895}],498:[function(require,module,exports){
(function (process,global){
/*!
 * @overview es6-promise - a tiny implementation of Promises/A+.
 * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
 * @license   Licensed under MIT license
 *            See https://raw.githubusercontent.com/stefanpenner/es6-promise/master/LICENSE
 * @version   3.3.1
 */

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (global.ES6Promise = factory());
}(this, (function () { 'use strict';

function objectOrFunction(x) {
  return typeof x === 'function' || typeof x === 'object' && x !== null;
}

function isFunction(x) {
  return typeof x === 'function';
}

var _isArray = undefined;
if (!Array.isArray) {
  _isArray = function (x) {
    return Object.prototype.toString.call(x) === '[object Array]';
  };
} else {
  _isArray = Array.isArray;
}

var isArray = _isArray;

var len = 0;
var vertxNext = undefined;
var customSchedulerFn = undefined;

var asap = function asap(callback, arg) {
  queue[len] = callback;
  queue[len + 1] = arg;
  len += 2;
  if (len === 2) {
    // If len is 2, that means that we need to schedule an async flush.
    // If additional callbacks are queued before the queue is flushed, they
    // will be processed by this flush that we are scheduling.
    if (customSchedulerFn) {
      customSchedulerFn(flush);
    } else {
      scheduleFlush();
    }
  }
};

function setScheduler(scheduleFn) {
  customSchedulerFn = scheduleFn;
}

function setAsap(asapFn) {
  asap = asapFn;
}

var browserWindow = typeof window !== 'undefined' ? window : undefined;
var browserGlobal = browserWindow || {};
var BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
var isNode = typeof self === 'undefined' && typeof process !== 'undefined' && ({}).toString.call(process) === '[object process]';

// test for web worker but not in IE10
var isWorker = typeof Uint8ClampedArray !== 'undefined' && typeof importScripts !== 'undefined' && typeof MessageChannel !== 'undefined';

// node
function useNextTick() {
  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
  // see https://github.com/cujojs/when/issues/410 for details
  return function () {
    return process.nextTick(flush);
  };
}

// vertx
function useVertxTimer() {
  return function () {
    vertxNext(flush);
  };
}

function useMutationObserver() {
  var iterations = 0;
  var observer = new BrowserMutationObserver(flush);
  var node = document.createTextNode('');
  observer.observe(node, { characterData: true });

  return function () {
    node.data = iterations = ++iterations % 2;
  };
}

// web worker
function useMessageChannel() {
  var channel = new MessageChannel();
  channel.port1.onmessage = flush;
  return function () {
    return channel.port2.postMessage(0);
  };
}

function useSetTimeout() {
  // Store setTimeout reference so es6-promise will be unaffected by
  // other code modifying setTimeout (like sinon.useFakeTimers())
  var globalSetTimeout = setTimeout;
  return function () {
    return globalSetTimeout(flush, 1);
  };
}

var queue = new Array(1000);
function flush() {
  for (var i = 0; i < len; i += 2) {
    var callback = queue[i];
    var arg = queue[i + 1];

    callback(arg);

    queue[i] = undefined;
    queue[i + 1] = undefined;
  }

  len = 0;
}

function attemptVertx() {
  try {
    var r = require;
    var vertx = r('vertx');
    vertxNext = vertx.runOnLoop || vertx.runOnContext;
    return useVertxTimer();
  } catch (e) {
    return useSetTimeout();
  }
}

var scheduleFlush = undefined;
// Decide what async method to use to triggering processing of queued callbacks:
if (isNode) {
  scheduleFlush = useNextTick();
} else if (BrowserMutationObserver) {
  scheduleFlush = useMutationObserver();
} else if (isWorker) {
  scheduleFlush = useMessageChannel();
} else if (browserWindow === undefined && typeof require === 'function') {
  scheduleFlush = attemptVertx();
} else {
  scheduleFlush = useSetTimeout();
}

function then(onFulfillment, onRejection) {
  var _arguments = arguments;

  var parent = this;

  var child = new this.constructor(noop);

  if (child[PROMISE_ID] === undefined) {
    makePromise(child);
  }

  var _state = parent._state;

  if (_state) {
    (function () {
      var callback = _arguments[_state - 1];
      asap(function () {
        return invokeCallback(_state, child, callback, parent._result);
      });
    })();
  } else {
    subscribe(parent, child, onFulfillment, onRejection);
  }

  return child;
}

/**
  `Promise.resolve` returns a promise that will become resolved with the
  passed `value`. It is shorthand for the following:

  ```javascript
  let promise = new Promise(function(resolve, reject){
    resolve(1);
  });

  promise.then(function(value){
    // value === 1
  });
  ```

  Instead of writing the above, your code now simply becomes the following:

  ```javascript
  let promise = Promise.resolve(1);

  promise.then(function(value){
    // value === 1
  });
  ```

  @method resolve
  @static
  @param {Any} value value that the returned promise will be resolved with
  Useful for tooling.
  @return {Promise} a promise that will become fulfilled with the given
  `value`
*/
function resolve(object) {
  /*jshint validthis:true */
  var Constructor = this;

  if (object && typeof object === 'object' && object.constructor === Constructor) {
    return object;
  }

  var promise = new Constructor(noop);
  _resolve(promise, object);
  return promise;
}

var PROMISE_ID = Math.random().toString(36).substring(16);

function noop() {}

var PENDING = void 0;
var FULFILLED = 1;
var REJECTED = 2;

var GET_THEN_ERROR = new ErrorObject();

function selfFulfillment() {
  return new TypeError("You cannot resolve a promise with itself");
}

function cannotReturnOwn() {
  return new TypeError('A promises callback cannot return that same promise.');
}

function getThen(promise) {
  try {
    return promise.then;
  } catch (error) {
    GET_THEN_ERROR.error = error;
    return GET_THEN_ERROR;
  }
}

function tryThen(then, value, fulfillmentHandler, rejectionHandler) {
  try {
    then.call(value, fulfillmentHandler, rejectionHandler);
  } catch (e) {
    return e;
  }
}

function handleForeignThenable(promise, thenable, then) {
  asap(function (promise) {
    var sealed = false;
    var error = tryThen(then, thenable, function (value) {
      if (sealed) {
        return;
      }
      sealed = true;
      if (thenable !== value) {
        _resolve(promise, value);
      } else {
        fulfill(promise, value);
      }
    }, function (reason) {
      if (sealed) {
        return;
      }
      sealed = true;

      _reject(promise, reason);
    }, 'Settle: ' + (promise._label || ' unknown promise'));

    if (!sealed && error) {
      sealed = true;
      _reject(promise, error);
    }
  }, promise);
}

function handleOwnThenable(promise, thenable) {
  if (thenable._state === FULFILLED) {
    fulfill(promise, thenable._result);
  } else if (thenable._state === REJECTED) {
    _reject(promise, thenable._result);
  } else {
    subscribe(thenable, undefined, function (value) {
      return _resolve(promise, value);
    }, function (reason) {
      return _reject(promise, reason);
    });
  }
}

function handleMaybeThenable(promise, maybeThenable, then$$) {
  if (maybeThenable.constructor === promise.constructor && then$$ === then && maybeThenable.constructor.resolve === resolve) {
    handleOwnThenable(promise, maybeThenable);
  } else {
    if (then$$ === GET_THEN_ERROR) {
      _reject(promise, GET_THEN_ERROR.error);
    } else if (then$$ === undefined) {
      fulfill(promise, maybeThenable);
    } else if (isFunction(then$$)) {
      handleForeignThenable(promise, maybeThenable, then$$);
    } else {
      fulfill(promise, maybeThenable);
    }
  }
}

function _resolve(promise, value) {
  if (promise === value) {
    _reject(promise, selfFulfillment());
  } else if (objectOrFunction(value)) {
    handleMaybeThenable(promise, value, getThen(value));
  } else {
    fulfill(promise, value);
  }
}

function publishRejection(promise) {
  if (promise._onerror) {
    promise._onerror(promise._result);
  }

  publish(promise);
}

function fulfill(promise, value) {
  if (promise._state !== PENDING) {
    return;
  }

  promise._result = value;
  promise._state = FULFILLED;

  if (promise._subscribers.length !== 0) {
    asap(publish, promise);
  }
}

function _reject(promise, reason) {
  if (promise._state !== PENDING) {
    return;
  }
  promise._state = REJECTED;
  promise._result = reason;

  asap(publishRejection, promise);
}

function subscribe(parent, child, onFulfillment, onRejection) {
  var _subscribers = parent._subscribers;
  var length = _subscribers.length;

  parent._onerror = null;

  _subscribers[length] = child;
  _subscribers[length + FULFILLED] = onFulfillment;
  _subscribers[length + REJECTED] = onRejection;

  if (length === 0 && parent._state) {
    asap(publish, parent);
  }
}

function publish(promise) {
  var subscribers = promise._subscribers;
  var settled = promise._state;

  if (subscribers.length === 0) {
    return;
  }

  var child = undefined,
      callback = undefined,
      detail = promise._result;

  for (var i = 0; i < subscribers.length; i += 3) {
    child = subscribers[i];
    callback = subscribers[i + settled];

    if (child) {
      invokeCallback(settled, child, callback, detail);
    } else {
      callback(detail);
    }
  }

  promise._subscribers.length = 0;
}

function ErrorObject() {
  this.error = null;
}

var TRY_CATCH_ERROR = new ErrorObject();

function tryCatch(callback, detail) {
  try {
    return callback(detail);
  } catch (e) {
    TRY_CATCH_ERROR.error = e;
    return TRY_CATCH_ERROR;
  }
}

function invokeCallback(settled, promise, callback, detail) {
  var hasCallback = isFunction(callback),
      value = undefined,
      error = undefined,
      succeeded = undefined,
      failed = undefined;

  if (hasCallback) {
    value = tryCatch(callback, detail);

    if (value === TRY_CATCH_ERROR) {
      failed = true;
      error = value.error;
      value = null;
    } else {
      succeeded = true;
    }

    if (promise === value) {
      _reject(promise, cannotReturnOwn());
      return;
    }
  } else {
    value = detail;
    succeeded = true;
  }

  if (promise._state !== PENDING) {
    // noop
  } else if (hasCallback && succeeded) {
      _resolve(promise, value);
    } else if (failed) {
      _reject(promise, error);
    } else if (settled === FULFILLED) {
      fulfill(promise, value);
    } else if (settled === REJECTED) {
      _reject(promise, value);
    }
}

function initializePromise(promise, resolver) {
  try {
    resolver(function resolvePromise(value) {
      _resolve(promise, value);
    }, function rejectPromise(reason) {
      _reject(promise, reason);
    });
  } catch (e) {
    _reject(promise, e);
  }
}

var id = 0;
function nextId() {
  return id++;
}

function makePromise(promise) {
  promise[PROMISE_ID] = id++;
  promise._state = undefined;
  promise._result = undefined;
  promise._subscribers = [];
}

function Enumerator(Constructor, input) {
  this._instanceConstructor = Constructor;
  this.promise = new Constructor(noop);

  if (!this.promise[PROMISE_ID]) {
    makePromise(this.promise);
  }

  if (isArray(input)) {
    this._input = input;
    this.length = input.length;
    this._remaining = input.length;

    this._result = new Array(this.length);

    if (this.length === 0) {
      fulfill(this.promise, this._result);
    } else {
      this.length = this.length || 0;
      this._enumerate();
      if (this._remaining === 0) {
        fulfill(this.promise, this._result);
      }
    }
  } else {
    _reject(this.promise, validationError());
  }
}

function validationError() {
  return new Error('Array Methods must be provided an Array');
};

Enumerator.prototype._enumerate = function () {
  var length = this.length;
  var _input = this._input;

  for (var i = 0; this._state === PENDING && i < length; i++) {
    this._eachEntry(_input[i], i);
  }
};

Enumerator.prototype._eachEntry = function (entry, i) {
  var c = this._instanceConstructor;
  var resolve$$ = c.resolve;

  if (resolve$$ === resolve) {
    var _then = getThen(entry);

    if (_then === then && entry._state !== PENDING) {
      this._settledAt(entry._state, i, entry._result);
    } else if (typeof _then !== 'function') {
      this._remaining--;
      this._result[i] = entry;
    } else if (c === Promise) {
      var promise = new c(noop);
      handleMaybeThenable(promise, entry, _then);
      this._willSettleAt(promise, i);
    } else {
      this._willSettleAt(new c(function (resolve$$) {
        return resolve$$(entry);
      }), i);
    }
  } else {
    this._willSettleAt(resolve$$(entry), i);
  }
};

Enumerator.prototype._settledAt = function (state, i, value) {
  var promise = this.promise;

  if (promise._state === PENDING) {
    this._remaining--;

    if (state === REJECTED) {
      _reject(promise, value);
    } else {
      this._result[i] = value;
    }
  }

  if (this._remaining === 0) {
    fulfill(promise, this._result);
  }
};

Enumerator.prototype._willSettleAt = function (promise, i) {
  var enumerator = this;

  subscribe(promise, undefined, function (value) {
    return enumerator._settledAt(FULFILLED, i, value);
  }, function (reason) {
    return enumerator._settledAt(REJECTED, i, reason);
  });
};

/**
  `Promise.all` accepts an array of promises, and returns a new promise which
  is fulfilled with an array of fulfillment values for the passed promises, or
  rejected with the reason of the first passed promise to be rejected. It casts all
  elements of the passed iterable to promises as it runs this algorithm.

  Example:

  ```javascript
  let promise1 = resolve(1);
  let promise2 = resolve(2);
  let promise3 = resolve(3);
  let promises = [ promise1, promise2, promise3 ];

  Promise.all(promises).then(function(array){
    // The array here would be [ 1, 2, 3 ];
  });
  ```

  If any of the `promises` given to `all` are rejected, the first promise
  that is rejected will be given as an argument to the returned promises's
  rejection handler. For example:

  Example:

  ```javascript
  let promise1 = resolve(1);
  let promise2 = reject(new Error("2"));
  let promise3 = reject(new Error("3"));
  let promises = [ promise1, promise2, promise3 ];

  Promise.all(promises).then(function(array){
    // Code here never runs because there are rejected promises!
  }, function(error) {
    // error.message === "2"
  });
  ```

  @method all
  @static
  @param {Array} entries array of promises
  @param {String} label optional string for labeling the promise.
  Useful for tooling.
  @return {Promise} promise that is fulfilled when all `promises` have been
  fulfilled, or rejected if any of them become rejected.
  @static
*/
function all(entries) {
  return new Enumerator(this, entries).promise;
}

/**
  `Promise.race` returns a new promise which is settled in the same way as the
  first passed promise to settle.

  Example:

  ```javascript
  let promise1 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 1');
    }, 200);
  });

  let promise2 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 2');
    }, 100);
  });

  Promise.race([promise1, promise2]).then(function(result){
    // result === 'promise 2' because it was resolved before promise1
    // was resolved.
  });
  ```

  `Promise.race` is deterministic in that only the state of the first
  settled promise matters. For example, even if other promises given to the
  `promises` array argument are resolved, but the first settled promise has
  become rejected before the other promises became fulfilled, the returned
  promise will become rejected:

  ```javascript
  let promise1 = new Promise(function(resolve, reject){
    setTimeout(function(){
      resolve('promise 1');
    }, 200);
  });

  let promise2 = new Promise(function(resolve, reject){
    setTimeout(function(){
      reject(new Error('promise 2'));
    }, 100);
  });

  Promise.race([promise1, promise2]).then(function(result){
    // Code here never runs
  }, function(reason){
    // reason.message === 'promise 2' because promise 2 became rejected before
    // promise 1 became fulfilled
  });
  ```

  An example real-world use case is implementing timeouts:

  ```javascript
  Promise.race([ajax('foo.json'), timeout(5000)])
  ```

  @method race
  @static
  @param {Array} promises array of promises to observe
  Useful for tooling.
  @return {Promise} a promise which settles in the same way as the first passed
  promise to settle.
*/
function race(entries) {
  /*jshint validthis:true */
  var Constructor = this;

  if (!isArray(entries)) {
    return new Constructor(function (_, reject) {
      return reject(new TypeError('You must pass an array to race.'));
    });
  } else {
    return new Constructor(function (resolve, reject) {
      var length = entries.length;
      for (var i = 0; i < length; i++) {
        Constructor.resolve(entries[i]).then(resolve, reject);
      }
    });
  }
}

/**
  `Promise.reject` returns a promise rejected with the passed `reason`.
  It is shorthand for the following:

  ```javascript
  let promise = new Promise(function(resolve, reject){
    reject(new Error('WHOOPS'));
  });

  promise.then(function(value){
    // Code here doesn't run because the promise is rejected!
  }, function(reason){
    // reason.message === 'WHOOPS'
  });
  ```

  Instead of writing the above, your code now simply becomes the following:

  ```javascript
  let promise = Promise.reject(new Error('WHOOPS'));

  promise.then(function(value){
    // Code here doesn't run because the promise is rejected!
  }, function(reason){
    // reason.message === 'WHOOPS'
  });
  ```

  @method reject
  @static
  @param {Any} reason value that the returned promise will be rejected with.
  Useful for tooling.
  @return {Promise} a promise rejected with the given `reason`.
*/
function reject(reason) {
  /*jshint validthis:true */
  var Constructor = this;
  var promise = new Constructor(noop);
  _reject(promise, reason);
  return promise;
}

function needsResolver() {
  throw new TypeError('You must pass a resolver function as the first argument to the promise constructor');
}

function needsNew() {
  throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.");
}

/**
  Promise objects represent the eventual result of an asynchronous operation. The
  primary way of interacting with a promise is through its `then` method, which
  registers callbacks to receive either a promise's eventual value or the reason
  why the promise cannot be fulfilled.

  Terminology
  -----------

  - `promise` is an object or function with a `then` method whose behavior conforms to this specification.
  - `thenable` is an object or function that defines a `then` method.
  - `value` is any legal JavaScript value (including undefined, a thenable, or a promise).
  - `exception` is a value that is thrown using the throw statement.
  - `reason` is a value that indicates why a promise was rejected.
  - `settled` the final resting state of a promise, fulfilled or rejected.

  A promise can be in one of three states: pending, fulfilled, or rejected.

  Promises that are fulfilled have a fulfillment value and are in the fulfilled
  state.  Promises that are rejected have a rejection reason and are in the
  rejected state.  A fulfillment value is never a thenable.

  Promises can also be said to *resolve* a value.  If this value is also a
  promise, then the original promise's settled state will match the value's
  settled state.  So a promise that *resolves* a promise that rejects will
  itself reject, and a promise that *resolves* a promise that fulfills will
  itself fulfill.


  Basic Usage:
  ------------

  ```js
  let promise = new Promise(function(resolve, reject) {
    // on success
    resolve(value);

    // on failure
    reject(reason);
  });

  promise.then(function(value) {
    // on fulfillment
  }, function(reason) {
    // on rejection
  });
  ```

  Advanced Usage:
  ---------------

  Promises shine when abstracting away asynchronous interactions such as
  `XMLHttpRequest`s.

  ```js
  function getJSON(url) {
    return new Promise(function(resolve, reject){
      let xhr = new XMLHttpRequest();

      xhr.open('GET', url);
      xhr.onreadystatechange = handler;
      xhr.responseType = 'json';
      xhr.setRequestHeader('Accept', 'application/json');
      xhr.send();

      function handler() {
        if (this.readyState === this.DONE) {
          if (this.status === 200) {
            resolve(this.response);
          } else {
            reject(new Error('getJSON: `' + url + '` failed with status: [' + this.status + ']'));
          }
        }
      };
    });
  }

  getJSON('/posts.json').then(function(json) {
    // on fulfillment
  }, function(reason) {
    // on rejection
  });
  ```

  Unlike callbacks, promises are great composable primitives.

  ```js
  Promise.all([
    getJSON('/posts'),
    getJSON('/comments')
  ]).then(function(values){
    values[0] // => postsJSON
    values[1] // => commentsJSON

    return values;
  });
  ```

  @class Promise
  @param {function} resolver
  Useful for tooling.
  @constructor
*/
function Promise(resolver) {
  this[PROMISE_ID] = nextId();
  this._result = this._state = undefined;
  this._subscribers = [];

  if (noop !== resolver) {
    typeof resolver !== 'function' && needsResolver();
    this instanceof Promise ? initializePromise(this, resolver) : needsNew();
  }
}

Promise.all = all;
Promise.race = race;
Promise.resolve = resolve;
Promise.reject = reject;
Promise._setScheduler = setScheduler;
Promise._setAsap = setAsap;
Promise._asap = asap;

Promise.prototype = {
  constructor: Promise,

  /**
    The primary way of interacting with a promise is through its `then` method,
    which registers callbacks to receive either a promise's eventual value or the
    reason why the promise cannot be fulfilled.
  
    ```js
    findUser().then(function(user){
      // user is available
    }, function(reason){
      // user is unavailable, and you are given the reason why
    });
    ```
  
    Chaining
    --------
  
    The return value of `then` is itself a promise.  This second, 'downstream'
    promise is resolved with the return value of the first promise's fulfillment
    or rejection handler, or rejected if the handler throws an exception.
  
    ```js
    findUser().then(function (user) {
      return user.name;
    }, function (reason) {
      return 'default name';
    }).then(function (userName) {
      // If `findUser` fulfilled, `userName` will be the user's name, otherwise it
      // will be `'default name'`
    });
  
    findUser().then(function (user) {
      throw new Error('Found user, but still unhappy');
    }, function (reason) {
      throw new Error('`findUser` rejected and we're unhappy');
    }).then(function (value) {
      // never reached
    }, function (reason) {
      // if `findUser` fulfilled, `reason` will be 'Found user, but still unhappy'.
      // If `findUser` rejected, `reason` will be '`findUser` rejected and we're unhappy'.
    });
    ```
    If the downstream promise does not specify a rejection handler, rejection reasons will be propagated further downstream.
  
    ```js
    findUser().then(function (user) {
      throw new PedagogicalException('Upstream error');
    }).then(function (value) {
      // never reached
    }).then(function (value) {
      // never reached
    }, function (reason) {
      // The `PedgagocialException` is propagated all the way down to here
    });
    ```
  
    Assimilation
    ------------
  
    Sometimes the value you want to propagate to a downstream promise can only be
    retrieved asynchronously. This can be achieved by returning a promise in the
    fulfillment or rejection handler. The downstream promise will then be pending
    until the returned promise is settled. This is called *assimilation*.
  
    ```js
    findUser().then(function (user) {
      return findCommentsByAuthor(user);
    }).then(function (comments) {
      // The user's comments are now available
    });
    ```
  
    If the assimliated promise rejects, then the downstream promise will also reject.
  
    ```js
    findUser().then(function (user) {
      return findCommentsByAuthor(user);
    }).then(function (comments) {
      // If `findCommentsByAuthor` fulfills, we'll have the value here
    }, function (reason) {
      // If `findCommentsByAuthor` rejects, we'll have the reason here
    });
    ```
  
    Simple Example
    --------------
  
    Synchronous Example
  
    ```javascript
    let result;
  
    try {
      result = findResult();
      // success
    } catch(reason) {
      // failure
    }
    ```
  
    Errback Example
  
    ```js
    findResult(function(result, err){
      if (err) {
        // failure
      } else {
        // success
      }
    });
    ```
  
    Promise Example;
  
    ```javascript
    findResult().then(function(result){
      // success
    }, function(reason){
      // failure
    });
    ```
  
    Advanced Example
    --------------
  
    Synchronous Example
  
    ```javascript
    let author, books;
  
    try {
      author = findAuthor();
      books  = findBooksByAuthor(author);
      // success
    } catch(reason) {
      // failure
    }
    ```
  
    Errback Example
  
    ```js
  
    function foundBooks(books) {
  
    }
  
    function failure(reason) {
  
    }
  
    findAuthor(function(author, err){
      if (err) {
        failure(err);
        // failure
      } else {
        try {
          findBoooksByAuthor(author, function(books, err) {
            if (err) {
              failure(err);
            } else {
              try {
                foundBooks(books);
              } catch(reason) {
                failure(reason);
              }
            }
          });
        } catch(error) {
          failure(err);
        }
        // success
      }
    });
    ```
  
    Promise Example;
  
    ```javascript
    findAuthor().
      then(findBooksByAuthor).
      then(function(books){
        // found books
    }).catch(function(reason){
      // something went wrong
    });
    ```
  
    @method then
    @param {Function} onFulfilled
    @param {Function} onRejected
    Useful for tooling.
    @return {Promise}
  */
  then: then,

  /**
    `catch` is simply sugar for `then(undefined, onRejection)` which makes it the same
    as the catch block of a try/catch statement.
  
    ```js
    function findAuthor(){
      throw new Error('couldn't find that author');
    }
  
    // synchronous
    try {
      findAuthor();
    } catch(reason) {
      // something went wrong
    }
  
    // async with promises
    findAuthor().catch(function(reason){
      // something went wrong
    });
    ```
  
    @method catch
    @param {Function} onRejection
    Useful for tooling.
    @return {Promise}
  */
  'catch': function _catch(onRejection) {
    return this.then(null, onRejection);
  }
};

function polyfill() {
    var local = undefined;

    if (typeof global !== 'undefined') {
        local = global;
    } else if (typeof self !== 'undefined') {
        local = self;
    } else {
        try {
            local = Function('return this')();
        } catch (e) {
            throw new Error('polyfill failed because global object is unavailable in this environment');
        }
    }

    var P = local.Promise;

    if (P) {
        var promiseToString = null;
        try {
            promiseToString = Object.prototype.toString.call(P.resolve());
        } catch (e) {
            // silently ignored
        }

        if (promiseToString === '[object Promise]' && !P.cast) {
            return;
        }
    }

    local.Promise = Promise;
}

polyfill();
// Strange compat..
Promise.polyfill = polyfill;
Promise.Promise = Promise;

return Promise;

})));

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"_process":923}],499:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Color = require('../color');
var Axes = require('../../plots/cartesian/axes');

var attributes = require('./attributes');


module.exports = function handleAnnotationDefaults(annIn, annOut, fullLayout, opts, itemOpts) {
    opts = opts || {};
    itemOpts = itemOpts || {};

    function coerce(attr, dflt) {
        return Lib.coerce(annIn, annOut, attributes, attr, dflt);
    }

    var visible = coerce('visible', !itemOpts.itemIsNotPlainObject);

    if(!visible) return annOut;

    coerce('opacity');
    coerce('align');
    coerce('bgcolor');

    var borderColor = coerce('bordercolor'),
        borderOpacity = Color.opacity(borderColor);

    coerce('borderpad');

    var borderWidth = coerce('borderwidth');
    var showArrow = coerce('showarrow');

    coerce('text', showArrow ? ' ' : 'new text');
    coerce('textangle');
    Lib.coerceFont(coerce, 'font', fullLayout.font);

    // positioning
    var axLetters = ['x', 'y'],
        arrowPosDflt = [-10, -30],
        gdMock = {_fullLayout: fullLayout};
    for(var i = 0; i < 2; i++) {
        var axLetter = axLetters[i];

        // xref, yref
        var axRef = Axes.coerceRef(annIn, annOut, gdMock, axLetter, '', 'paper');

        // x, y
        Axes.coercePosition(annOut, gdMock, coerce, axRef, axLetter, 0.5);

        if(showArrow) {
            var arrowPosAttr = 'a' + axLetter,
                // axref, ayref
                aaxRef = Axes.coerceRef(annIn, annOut, gdMock, arrowPosAttr, 'pixel');

            // for now the arrow can only be on the same axis or specified as pixels
            // TODO: sometime it might be interesting to allow it to be on *any* axis
            // but that would require updates to drawing & autorange code and maybe more
            if(aaxRef !== 'pixel' && aaxRef !== axRef) {
                aaxRef = annOut[arrowPosAttr] = 'pixel';
            }

            // ax, ay
            var aDflt = (aaxRef === 'pixel') ? arrowPosDflt[i] : 0.4;
            Axes.coercePosition(annOut, gdMock, coerce, aaxRef, arrowPosAttr, aDflt);
        }

        // xanchor, yanchor
        else coerce(axLetter + 'anchor');
    }

    // if you have one coordinate you should have both
    Lib.noneOrAll(annIn, annOut, ['x', 'y']);

    if(showArrow) {
        coerce('arrowcolor', borderOpacity ? annOut.bordercolor : Color.defaultLine);
        coerce('arrowhead');
        coerce('arrowsize');
        coerce('arrowwidth', ((borderOpacity && borderWidth) || 1) * 2);

        // if you have one part of arrow length you should have both
        Lib.noneOrAll(annIn, annOut, ['ax', 'ay']);
    }

    return annOut;
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"../color":510,"./attributes":501}],500:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * centerx is a center of scaling tuned for maximum scalability of
 * the arrowhead ie throughout mag=0.3..3 the head is joined smoothly
 * to the line, but the endpoint moves.
 * backoff is the distance to move the arrowhead, and the end of the
 * line, in order to end at the right place
 *
 * TODO: option to have the pointed-to  point a little in front of the
 * end of the line, as people tend to want a bit of a gap there...
 */

module.exports = [
    // no arrow
    '',
    // wide with flat back
    {
        path: 'M-2.4,-3V3L0.6,0Z',
        backoff: 0.6
    },
    // narrower with flat back
    {
        path: 'M-3.7,-2.5V2.5L1.3,0Z',
        backoff: 1.3
    },
    // barbed
    {
        path: 'M-4.45,-3L-1.65,-0.2V0.2L-4.45,3L1.55,0Z',
        backoff: 1.55
    },
    // wide line-drawn
    {
        path: 'M-2.2,-2.2L-0.2,-0.2V0.2L-2.2,2.2L-1.4,3L1.6,0L-1.4,-3Z',
        backoff: 1.6
    },
    // narrower line-drawn
    {
        path: 'M-4.4,-2.1L-0.6,-0.2V0.2L-4.4,2.1L-4,3L2,0L-4,-3Z',
        backoff: 2
    },
    // circle
    {
        path: 'M2,0A2,2 0 1,1 0,-2A2,2 0 0,1 2,0Z',
        backoff: 0
    },
    // square
    {
        path: 'M2,2V-2H-2V2Z',
        backoff: 0
    }
];

},{}],501:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var ARROWPATHS = require('./arrow_paths');
var fontAttrs = require('../../plots/font_attributes');
var cartesianConstants = require('../../plots/cartesian/constants');
var extendFlat = require('../../lib/extend').extendFlat;


module.exports = {
    _isLinkedToArray: 'annotation',

    visible: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not this annotation is visible.'
        ].join(' ')
    },

    text: {
        valType: 'string',
        role: 'info',
        description: [
            'Sets the text associated with this annotation.',
            'Plotly uses a subset of HTML tags to do things like',
            'newline (<br>), bold (<b></b>), italics (<i></i>),',
            'hyperlinks (<a href=\'...\'></a>). Tags <em>, <sup>, <sub>',
            '<span> are also supported.'
        ].join(' ')
    },
    textangle: {
        valType: 'angle',
        dflt: 0,
        role: 'style',
        description: [
            'Sets the angle at which the `text` is drawn',
            'with respect to the horizontal.'
        ].join(' ')
    },
    font: extendFlat({}, fontAttrs, {
        description: 'Sets the annotation text font.'
    }),
    opacity: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 1,
        role: 'style',
        description: 'Sets the opacity of the annotation (text + arrow).'
    },
    align: {
        valType: 'enumerated',
        values: ['left', 'center', 'right'],
        dflt: 'center',
        role: 'style',
        description: [
            'Sets the vertical alignment of the `text` with',
            'respect to the set `x` and `y` position.',
            'Has only an effect if `text` spans more two or more lines',
            '(i.e. `text` contains one or more <br> HTML tags).'
        ].join(' ')
    },
    bgcolor: {
        valType: 'color',
        dflt: 'rgba(0,0,0,0)',
        role: 'style',
        description: 'Sets the background color of the annotation.'
    },
    bordercolor: {
        valType: 'color',
        dflt: 'rgba(0,0,0,0)',
        role: 'style',
        description: [
            'Sets the color of the border enclosing the annotation `text`.'
        ].join(' ')
    },
    borderpad: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: [
            'Sets the padding (in px) between the `text`',
            'and the enclosing border.'
        ].join(' ')
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: [
            'Sets the width (in px) of the border enclosing',
            'the annotation `text`.'
        ].join(' ')
    },
    // arrow
    showarrow: {
        valType: 'boolean',
        dflt: true,
        role: 'style',
        description: [
            'Determines whether or not the annotation is drawn with an arrow.',
            'If *true*, `text` is placed near the arrow\'s tail.',
            'If *false*, `text` lines up with the `x` and `y` provided.'
        ].join(' ')
    },
    arrowcolor: {
        valType: 'color',
        role: 'style',
        description: 'Sets the color of the annotation arrow.'
    },
    arrowhead: {
        valType: 'integer',
        min: 0,
        max: ARROWPATHS.length,
        dflt: 1,
        role: 'style',
        description: 'Sets the annotation arrow head style.'
    },
    arrowsize: {
        valType: 'number',
        min: 0.3,
        dflt: 1,
        role: 'style',
        description: 'Sets the size (in px) of annotation arrow head.'
    },
    arrowwidth: {
        valType: 'number',
        min: 0.1,
        role: 'style',
        description: 'Sets the width (in px) of annotation arrow.'
    },
    ax: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the x component of the arrow tail about the arrow head.',
            'If `axref` is `pixel`, a positive (negative) ',
            'component corresponds to an arrow pointing',
            'from right to left (left to right).',
            'If `axref` is an axis, this is an absolute value on that axis,',
            'like `x`, NOT a relative value.'
        ].join(' ')
    },
    ay: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the y component of the arrow tail about the arrow head.',
            'If `ayref` is `pixel`, a positive (negative) ',
            'component corresponds to an arrow pointing',
            'from bottom to top (top to bottom).',
            'If `ayref` is an axis, this is an absolute value on that axis,',
            'like `y`, NOT a relative value.'
        ].join(' ')
    },
    axref: {
        valType: 'enumerated',
        dflt: 'pixel',
        values: [
            'pixel',
            cartesianConstants.idRegex.x.toString()
        ],
        role: 'info',
        description: [
            'Indicates in what terms the tail of the annotation (ax,ay) ',
            'is specified. If `pixel`, `ax` is a relative offset in pixels ',
            'from `x`. If set to an x axis id (e.g. *x* or *x2*), `ax` is ',
            'specified in the same terms as that axis. This is useful ',
            'for trendline annotations which should continue to indicate ',
            'the correct trend when zoomed.'
        ].join(' ')
    },
    ayref: {
        valType: 'enumerated',
        dflt: 'pixel',
        values: [
            'pixel',
            cartesianConstants.idRegex.y.toString()
        ],
        role: 'info',
        description: [
            'Indicates in what terms the tail of the annotation (ax,ay) ',
            'is specified. If `pixel`, `ay` is a relative offset in pixels ',
            'from `y`. If set to a y axis id (e.g. *y* or *y2*), `ay` is ',
            'specified in the same terms as that axis. This is useful ',
            'for trendline annotations which should continue to indicate ',
            'the correct trend when zoomed.'
        ].join(' ')
    },
    // positioning
    xref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.x.toString()
        ],
        role: 'info',
        description: [
            'Sets the annotation\'s x coordinate axis.',
            'If set to an x axis id (e.g. *x* or *x2*), the `x` position',
            'refers to an x coordinate',
            'If set to *paper*, the `x` position refers to the distance from',
            'the left side of the plotting area in normalized coordinates',
            'where 0 (1) corresponds to the left (right) side.'
        ].join(' ')
    },
    x: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the annotation\'s x position.',
            'If the axis `type` is *log*, then you must take the',
            'log of your desired range.',
            'If the axis `type` is *date*, it should be date strings,',
            'like date data, though Date objects and unix milliseconds',
            'will be accepted and converted to strings.',
            'If the axis `type` is *category*, it should be numbers,',
            'using the scale where each category is assigned a serial',
            'number from zero in the order it appears.'
        ].join(' ')
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'auto',
        role: 'info',
        description: [
            'Sets the annotation\'s horizontal position anchor',
            'This anchor binds the `x` position to the *left*, *center*',
            'or *right* of the annotation.',
            'For example, if `x` is set to 1, `xref` to *paper* and',
            '`xanchor` to *right* then the right-most portion of the',
            'annotation lines up with the right-most edge of the',
            'plotting area.',
            'If *auto*, the anchor is equivalent to *center* for',
            'data-referenced annotations',
            'whereas for paper-referenced, the anchor picked corresponds',
            'to the closest side.'
        ].join(' ')
    },
    yref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.y.toString()
        ],
        role: 'info',
        description: [
            'Sets the annotation\'s y coordinate axis.',
            'If set to an y axis id (e.g. *y* or *y2*), the `y` position',
            'refers to an y coordinate',
            'If set to *paper*, the `y` position refers to the distance from',
            'the bottom of the plotting area in normalized coordinates',
            'where 0 (1) corresponds to the bottom (top).'
        ].join(' ')
    },
    y: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the annotation\'s y position.',
            'If the axis `type` is *log*, then you must take the',
            'log of your desired range.',
            'If the axis `type` is *date*, it should be date strings,',
            'like date data, though Date objects and unix milliseconds',
            'will be accepted and converted to strings.',
            'If the axis `type` is *category*, it should be numbers,',
            'using the scale where each category is assigned a serial',
            'number from zero in the order it appears.'
        ].join(' ')
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'auto',
        role: 'info',
        description: [
            'Sets the annotation\'s vertical position anchor',
            'This anchor binds the `y` position to the *top*, *middle*',
            'or *bottom* of the annotation.',
            'For example, if `y` is set to 1, `yref` to *paper* and',
            '`yanchor` to *top* then the top-most portion of the',
            'annotation lines up with the top-most edge of the',
            'plotting area.',
            'If *auto*, the anchor is equivalent to *middle* for',
            'data-referenced annotations',
            'whereas for paper-referenced, the anchor picked corresponds',
            'to the closest side.'
        ].join(' ')
    },

    _deprecated: {
        ref: {
            valType: 'string',
            role: 'info',
            description: [
                'Obsolete. Set `xref` and `yref` separately instead.'
            ].join(' ')
        }
    }
};

},{"../../lib/extend":603,"../../plots/cartesian/constants":647,"../../plots/font_attributes":662,"./arrow_paths":500}],502:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var draw = require('./draw').draw;


module.exports = function calcAutorange(gd) {
    var fullLayout = gd._fullLayout,
        annotationList = Lib.filterVisible(fullLayout.annotations);

    if(!annotationList.length || !gd._fullData.length) return;

    var annotationAxes = {};
    annotationList.forEach(function(ann) {
        annotationAxes[ann.xref] = true;
        annotationAxes[ann.yref] = true;
    });

    var autorangedAnnos = Axes.list(gd).filter(function(ax) {
        return ax.autorange && annotationAxes[ax._id];
    });
    if(!autorangedAnnos.length) return;

    return Lib.syncOrAsync([
        draw,
        annAutorange
    ], gd);
};

function annAutorange(gd) {
    var fullLayout = gd._fullLayout;

    // find the bounding boxes for each of these annotations'
    // relative to their anchor points
    // use the arrow and the text bg rectangle,
    // as the whole anno may include hidden text in its bbox
    fullLayout.annotations.forEach(function(ann) {
        var xa = Axes.getFromId(gd, ann.xref),
            ya = Axes.getFromId(gd, ann.yref);

        if(!(xa || ya)) return;

        var halfWidth = (ann._xsize || 0) / 2,
            xShift = ann._xshift || 0,
            halfHeight = (ann._ysize || 0) / 2,
            yShift = ann._yshift || 0,
            leftSize = halfWidth - xShift,
            rightSize = halfWidth + xShift,
            topSize = halfHeight - yShift,
            bottomSize = halfHeight + yShift;

        if(ann.showarrow) {
            var headSize = 3 * ann.arrowsize * ann.arrowwidth;
            leftSize = Math.max(leftSize, headSize);
            rightSize = Math.max(rightSize, headSize);
            topSize = Math.max(topSize, headSize);
            bottomSize = Math.max(bottomSize, headSize);
        }

        if(xa && xa.autorange) {
            Axes.expand(xa, [xa.r2c(ann.x)], {
                ppadplus: rightSize,
                ppadminus: leftSize
            });
        }

        if(ya && ya.autorange) {
            Axes.expand(ya, [ya.r2c(ann.y)], {
                ppadplus: bottomSize,
                ppadminus: topSize
            });
        }
    });
}

},{"../../lib":610,"../../plots/cartesian/axes":642,"./draw":504}],503:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var handleArrayContainerDefaults = require('../../plots/array_container_defaults');
var handleAnnotationDefaults = require('./annotation_defaults');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    var opts = {
        name: 'annotations',
        handleItemDefaults: handleAnnotationDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

},{"../../plots/array_container_defaults":639,"./annotation_defaults":499}],504:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var setCursor = require('../../lib/setcursor');
var dragElement = require('../dragelement');

var handleAnnotationDefaults = require('./annotation_defaults');
var supplyLayoutDefaults = require('./defaults');
var arrowhead = require('./draw_arrow_head');


// Annotations are stored in gd.layout.annotations, an array of objects
// index can point to one item in this array,
//  or non-numeric to simply add a new one
//  or -1 to modify all existing
// opt can be the full options object, or one key (to be set to value)
//  or undefined to simply redraw
// if opt is blank, val can be 'add' or a full options object to add a new
//  annotation at that point in the array, or 'remove' to delete this one

module.exports = {
    draw: draw,
    drawOne: drawOne
};

function draw(gd) {
    var fullLayout = gd._fullLayout;

    fullLayout._infolayer.selectAll('.annotation').remove();

    for(var i = 0; i < fullLayout.annotations.length; i++) {
        if(fullLayout.annotations[i].visible) {
            drawOne(gd, i);
        }
    }

    return Plots.previousPromises(gd);
}

function drawOne(gd, index, opt, value) {
    var layout = gd.layout,
        fullLayout = gd._fullLayout,
        i;

    if(!isNumeric(index) || index === -1) {

        // no index provided - we're operating on ALL annotations
        if(!index && Array.isArray(value)) {
            // a whole annotation array is passed in
            // (as in, redo of delete all)
            layout.annotations = value;
            supplyLayoutDefaults(layout, fullLayout);
            draw(gd);
            return;
        }
        else if(value === 'remove') {
            // delete all
            delete layout.annotations;
            fullLayout.annotations = [];
            draw(gd);
            return;
        }
        else if(opt && value !== 'add') {
            // make the same change to all annotations
            for(i = 0; i < fullLayout.annotations.length; i++) {
                drawOne(gd, i, opt, value);
            }
            return;
        }
        else {
            // add a new empty annotation
            index = fullLayout.annotations.length;
            fullLayout.annotations.push({});
        }
    }

    if(!opt && value) {
        if(value === 'remove') {
            fullLayout._infolayer.selectAll('.annotation[data-index="' + index + '"]')
                .remove();
            fullLayout.annotations.splice(index, 1);
            layout.annotations.splice(index, 1);
            for(i = index; i < fullLayout.annotations.length; i++) {
                fullLayout._infolayer
                    .selectAll('.annotation[data-index="' + (i + 1) + '"]')
                    .attr('data-index', String(i));

                // redraw all annotations past the removed one,
                // so they bind to the right events
                drawOne(gd, i);
            }
            return;
        }
        else if(value === 'add' || Lib.isPlainObject(value)) {
            fullLayout.annotations.splice(index, 0, {});

            var rule = Lib.isPlainObject(value) ?
                    Lib.extendFlat({}, value) :
                    {text: 'New text'};

            if(layout.annotations) {
                layout.annotations.splice(index, 0, rule);
            } else {
                layout.annotations = [rule];
            }

            for(i = fullLayout.annotations.length - 1; i > index; i--) {
                fullLayout._infolayer
                    .selectAll('.annotation[data-index="' + (i - 1) + '"]')
                    .attr('data-index', String(i));
                drawOne(gd, i);
            }
        }
    }

    // remove the existing annotation if there is one
    fullLayout._infolayer.selectAll('.annotation[data-index="' + index + '"]').remove();

    // remember a few things about what was already there,
    var optionsIn = layout.annotations[index],
        oldPrivate = fullLayout.annotations[index];

    // not sure how we're getting here... but C12 is seeing a bug
    // where we fail here when they add/remove annotations
    if(!optionsIn) return;

    // alter the input annotation as requested
    var optionsEdit = {};
    if(typeof opt === 'string' && opt) optionsEdit[opt] = value;
    else if(Lib.isPlainObject(opt)) optionsEdit = opt;

    var optionKeys = Object.keys(optionsEdit);
    for(i = 0; i < optionKeys.length; i++) {
        var k = optionKeys[i];
        Lib.nestedProperty(optionsIn, k).set(optionsEdit[k]);
    }

    // return early in visible: false updates
    if(optionsIn.visible === false) return;

    var gs = fullLayout._size;
    var oldRef = {xref: optionsIn.xref, yref: optionsIn.yref};

    var axLetters = ['x', 'y'];
    for(i = 0; i < 2; i++) {
        var axLetter = axLetters[i];
        // if we don't have an explicit position already,
        // don't set one just because we're changing references
        // or axis type.
        // the defaults will be consistent most of the time anyway,
        // except in log/linear changes
        if(optionsEdit[axLetter] !== undefined ||
                optionsIn[axLetter] === undefined) {
            continue;
        }

        var axOld = Axes.getFromId(gd, Axes.coerceRef(oldRef, {}, gd, axLetter, '', 'paper')),
            axNew = Axes.getFromId(gd, Axes.coerceRef(optionsIn, {}, gd, axLetter, '', 'paper')),
            position = optionsIn[axLetter],
            axTypeOld = oldPrivate['_' + axLetter + 'type'];

        if(optionsEdit[axLetter + 'ref'] !== undefined) {

            // TODO: include ax / ay / axref / ayref here if not 'pixel'
            // or even better, move all of this machinery out of here and into
            // streambed as extra attributes to a regular relayout call
            // we should do this after v2.0 when it can work equivalently for
            // annotations, shapes, and images.

            var autoAnchor = optionsIn[axLetter + 'anchor'] === 'auto',
                plotSize = (axLetter === 'x' ? gs.w : gs.h),
                halfSizeFrac = (oldPrivate['_' + axLetter + 'size'] || 0) /
                    (2 * plotSize);
            if(axOld && axNew) { // data -> different data
                // go to the same fraction of the axis length
                // whether or not these axes share a domain

                position = axNew.fraction2r(axOld.r2fraction(position));
            }
            else if(axOld) { // data -> paper
                // first convert to fraction of the axis
                position = axOld.r2fraction(position);

                // next scale the axis to the whole plot
                position = axOld.domain[0] +
                    position * (axOld.domain[1] - axOld.domain[0]);

                // finally see if we need to adjust auto alignment
                // because auto always means middle / center alignment for data,
                // but it changes for page alignment based on the closest side
                if(autoAnchor) {
                    var posPlus = position + halfSizeFrac,
                        posMinus = position - halfSizeFrac;
                    if(position + posMinus < 2 / 3) position = posMinus;
                    else if(position + posPlus > 4 / 3) position = posPlus;
                }
            }
            else if(axNew) { // paper -> data
                // first see if we need to adjust auto alignment
                if(autoAnchor) {
                    if(position < 1 / 3) position += halfSizeFrac;
                    else if(position > 2 / 3) position -= halfSizeFrac;
                }

                // next convert to fraction of the axis
                position = (position - axNew.domain[0]) /
                    (axNew.domain[1] - axNew.domain[0]);

                // finally convert to data coordinates
                position = axNew.fraction2r(position);
            }
        }

        if(axNew && axNew === axOld && axTypeOld) {
            if(axTypeOld === 'log' && axNew.type !== 'log') {
                position = Math.pow(10, position);
            }
            else if(axTypeOld !== 'log' && axNew.type === 'log') {
                position = (position > 0) ?
                    Math.log(position) / Math.LN10 : undefined;
            }
        }

        optionsIn[axLetter] = position;
    }

    var options = {};
    handleAnnotationDefaults(optionsIn, options, fullLayout);
    fullLayout.annotations[index] = options;

    var xa = Axes.getFromId(gd, options.xref),
        ya = Axes.getFromId(gd, options.yref),
        annPosPx = {x: 0, y: 0},
        textangle = +options.textangle || 0;

    // create the components
    // made a single group to contain all, so opacity can work right
    // with border/arrow together this could handle a whole bunch of
    // cleanup at this point, but works for now
    var anngroup = fullLayout._infolayer.append('g')
        .classed('annotation', true)
        .attr('data-index', String(index))
        .style('opacity', options.opacity)
        .on('click', function() {
            gd._dragging = false;
            gd.emit('plotly_clickannotation', {
                index: index,
                annotation: optionsIn,
                fullAnnotation: options
            });
        });

    // another group for text+background so that they can rotate together
    var anng = anngroup.append('g')
        .classed('annotation-text-g', true)
        .attr('data-index', String(index));

    var ann = anng.append('g');

    var borderwidth = options.borderwidth,
        borderpad = options.borderpad,
        borderfull = borderwidth + borderpad;

    var annbg = ann.append('rect')
        .attr('class', 'bg')
        .style('stroke-width', borderwidth + 'px')
        .call(Color.stroke, options.bordercolor)
        .call(Color.fill, options.bgcolor);

    var font = options.font;

    var anntext = ann.append('text')
        .classed('annotation', true)
        .attr('data-unformatted', options.text)
        .text(options.text);

    function textLayout(s) {
        s.call(Drawing.font, font)
        .attr({
            'text-anchor': {
                left: 'start',
                right: 'end'
            }[options.align] || 'middle'
        });

        svgTextUtils.convertToTspans(s, drawGraphicalElements);
        return s;
    }

    function drawGraphicalElements() {

        // make sure lines are aligned the way they will be
        // at the end, even if their position changes
        anntext.selectAll('tspan.line').attr({y: 0, x: 0});

        var mathjaxGroup = ann.select('.annotation-math-group'),
            hasMathjax = !mathjaxGroup.empty(),
            anntextBB = Drawing.bBox(
                (hasMathjax ? mathjaxGroup : anntext).node()),
            annwidth = anntextBB.width,
            annheight = anntextBB.height,
            outerwidth = Math.round(annwidth + 2 * borderfull),
            outerheight = Math.round(annheight + 2 * borderfull);


        // save size in the annotation object for use by autoscale
        options._w = annwidth;
        options._h = annheight;

        function shiftFraction(v, anchor) {
            if(anchor === 'auto') {
                if(v < 1 / 3) anchor = 'left';
                else if(v > 2 / 3) anchor = 'right';
                else anchor = 'center';
            }
            return {
                center: 0,
                middle: 0,
                left: 0.5,
                bottom: -0.5,
                right: -0.5,
                top: 0.5
            }[anchor];
        }

        var annotationIsOffscreen = false;
        ['x', 'y'].forEach(function(axLetter) {
            var axRef = options[axLetter + 'ref'] || axLetter,
                ax = Axes.getFromId(gd, axRef),
                dimAngle = (textangle + (axLetter === 'x' ? 0 : 90)) * Math.PI / 180,
                annSize = outerwidth * Math.abs(Math.cos(dimAngle)) +
                          outerheight * Math.abs(Math.sin(dimAngle)),
                anchor = options[axLetter + 'anchor'],
                alignPosition;

            // calculate pixel position
            if(ax) {
                // hide the annotation if it's pointing
                // outside the visible plot (as long as the axis
                // isn't autoranged - then we need to draw it
                // anyway to get its bounding box)
                var posFraction = ax.r2fraction(options[axLetter]);
                if(!ax.autorange && (posFraction < 0 || posFraction > 1)) {
                    if(options['a' + axLetter + 'ref'] === axRef) {
                        posFraction = ax.r2fraction(options['a' + axLetter]);
                        if(posFraction < 0 || posFraction > 1) {
                            annotationIsOffscreen = true;
                        }
                    }
                    else {
                        annotationIsOffscreen = true;
                    }

                    if(annotationIsOffscreen) return;
                }
                annPosPx[axLetter] = ax._offset + ax.r2p(options[axLetter]);
                alignPosition = 0.5;
            }
            else {
                alignPosition = options[axLetter];
                if(axLetter === 'y') alignPosition = 1 - alignPosition;
                annPosPx[axLetter] = (axLetter === 'x') ?
                    (gs.l + gs.w * alignPosition) :
                    (gs.t + gs.h * alignPosition);
            }

            var alignShift = 0;
            if(options['a' + axLetter + 'ref'] === axRef) {
                annPosPx['aa' + axLetter] = ax._offset + ax.r2p(options['a' + axLetter]);
            } else {
                if(options.showarrow) {
                    alignShift = options['a' + axLetter];
                }
                else {
                    alignShift = annSize * shiftFraction(alignPosition, anchor);
                }
                annPosPx[axLetter] += alignShift;
            }

            // save the current axis type for later log/linear changes
            options['_' + axLetter + 'type'] = ax && ax.type;

            // save the size and shift in this dim for autorange
            options['_' + axLetter + 'size'] = annSize;
            options['_' + axLetter + 'shift'] = alignShift;
        });

        if(annotationIsOffscreen) {
            ann.remove();
            return;
        }

        var arrowX, arrowY;

        // make sure the arrowhead (if there is one)
        // and the annotation center are visible
        if(options.showarrow) {
            if(options.axref === options.xref) {
                // we don't want to constrain if the tail is absolute
                // or the slope (which is meaningful) will change.
                arrowX = annPosPx.x;
            } else {
                arrowX = Lib.constrain(annPosPx.x - options.ax, 1, fullLayout.width - 1);
            }

            if(options.ayref === options.yref) {
                // we don't want to constrain if the tail is absolute
                // or the slope (which is meaningful) will change.
                arrowY = annPosPx.y;
            } else {
                arrowY = Lib.constrain(annPosPx.y - options.ay, 1, fullLayout.height - 1);
            }
        }
        annPosPx.x = Lib.constrain(annPosPx.x, 1, fullLayout.width - 1);
        annPosPx.y = Lib.constrain(annPosPx.y, 1, fullLayout.height - 1);

        var texty = borderfull - anntextBB.top,
            textx = borderfull - anntextBB.left;

        if(hasMathjax) {
            mathjaxGroup.select('svg').attr({x: borderfull - 1, y: borderfull});
        }
        else {
            anntext.attr({x: textx, y: texty});
            anntext.selectAll('tspan.line').attr({y: texty, x: textx});
        }

        annbg.call(Drawing.setRect, borderwidth / 2, borderwidth / 2,
            outerwidth - borderwidth, outerheight - borderwidth);

        var annX = 0, annY = 0;
        if(options.axref === options.xref) {
            annX = Math.round(annPosPx.aax - outerwidth / 2);
        } else {
            annX = Math.round(annPosPx.x - outerwidth / 2);
        }

        if(options.ayref === options.yref) {
            annY = Math.round(annPosPx.aay - outerheight / 2);
        } else {
            annY = Math.round(annPosPx.y - outerheight / 2);
        }

        ann.call(Lib.setTranslate, annX, annY);

        var annbase = 'annotations[' + index + ']';

        // add the arrow
        // uses options[arrowwidth,arrowcolor,arrowhead] for styling
        var drawArrow = function(dx, dy) {
            d3.select(gd)
                .selectAll('.annotation-arrow-g[data-index="' + index + '"]')
                .remove();
            // find where to start the arrow:
            // at the border of the textbox, if that border is visible,
            // or at the edge of the lines of text, if the border is hidden
            // TODO: tspan bounding box fails in chrome
            // looks like there may be a cross-browser solution, see
            // http://stackoverflow.com/questions/5364980/
            //    how-to-get-the-width-of-an-svg-tspan-element
            var arrowX0, arrowY0;

            if(options.axref === options.xref) {
                arrowX0 = annPosPx.aax + dx;
            } else {
                arrowX0 = annPosPx.x + dx;
            }

            if(options.ayref === options.yref) {
                arrowY0 = annPosPx.aay + dy;
            } else {
                arrowY0 = annPosPx.y + dy;
            }

                // create transform matrix and related functions
            var transform =
                    Lib.rotationXYMatrix(textangle, arrowX0, arrowY0),
                applyTransform = Lib.apply2DTransform(transform),
                applyTransform2 = Lib.apply2DTransform2(transform),

                // calculate and transform bounding box
                xHalf = annbg.attr('width') / 2,
                yHalf = annbg.attr('height') / 2,
                edges = [
                    [arrowX0 - xHalf, arrowY0 - yHalf, arrowX0 - xHalf, arrowY0 + yHalf],
                    [arrowX0 - xHalf, arrowY0 + yHalf, arrowX0 + xHalf, arrowY0 + yHalf],
                    [arrowX0 + xHalf, arrowY0 + yHalf, arrowX0 + xHalf, arrowY0 - yHalf],
                    [arrowX0 + xHalf, arrowY0 - yHalf, arrowX0 - xHalf, arrowY0 - yHalf]
                ].map(applyTransform2);

            // Remove the line if it ends inside the box.  Use ray
            // casting for rotated boxes: see which edges intersect a
            // line from the arrowhead to far away and reduce with xor
            // to get the parity of the number of intersections.
            if(edges.reduce(function(a, x) {
                return a ^
                    !!lineIntersect(arrowX, arrowY, arrowX + 1e6, arrowY + 1e6,
                            x[0], x[1], x[2], x[3]);
            }, false)) {
                // no line or arrow - so quit drawArrow now
                return;
            }

            edges.forEach(function(x) {
                var p = lineIntersect(arrowX0, arrowY0, arrowX, arrowY,
                            x[0], x[1], x[2], x[3]);
                if(p) {
                    arrowX0 = p.x;
                    arrowY0 = p.y;
                }
            });

            var strokewidth = options.arrowwidth,
                arrowColor = options.arrowcolor;

            var arrowgroup = anngroup.append('g')
                .style({opacity: Color.opacity(arrowColor)})
                .classed('annotation-arrow-g', true)
                .attr('data-index', String(index));

            var arrow = arrowgroup.append('path')
                .attr('d', 'M' + arrowX0 + ',' + arrowY0 + 'L' + arrowX + ',' + arrowY)
                .style('stroke-width', strokewidth + 'px')
                .call(Color.stroke, Color.rgb(arrowColor));

            arrowhead(arrow, options.arrowhead, 'end', options.arrowsize);

            var arrowdrag = arrowgroup.append('path')
                .classed('annotation', true)
                .classed('anndrag', true)
                .attr({
                    'data-index': String(index),
                    d: 'M3,3H-3V-3H3ZM0,0L' + (arrowX0 - arrowX) + ',' + (arrowY0 - arrowY),
                    transform: 'translate(' + arrowX + ',' + arrowY + ')'
                })
                .style('stroke-width', (strokewidth + 6) + 'px')
                .call(Color.stroke, 'rgba(0,0,0,0)')
                .call(Color.fill, 'rgba(0,0,0,0)');

            if(gd._context.editable) {
                var update,
                    annx0,
                    anny0;

                dragElement.init({
                    element: arrowdrag.node(),
                    prepFn: function() {
                        var pos = Lib.getTranslate(ann);

                        annx0 = pos.x;
                        anny0 = pos.y;
                        update = {};
                        if(xa && xa.autorange) {
                            update[xa._name + '.autorange'] = true;
                        }
                        if(ya && ya.autorange) {
                            update[ya._name + '.autorange'] = true;
                        }
                    },
                    moveFn: function(dx, dy) {
                        arrowgroup.attr('transform', 'translate(' + dx + ',' + dy + ')');

                        var annxy0 = applyTransform(annx0, anny0),
                            xcenter = annxy0[0] + dx,
                            ycenter = annxy0[1] + dy;
                        ann.call(Lib.setTranslate, xcenter, ycenter);

                        update[annbase + '.x'] = xa ?
                            xa.p2r(xa.r2p(options.x) + dx) :
                            ((arrowX + dx - gs.l) / gs.w);
                        update[annbase + '.y'] = ya ?
                            ya.p2r(ya.r2p(options.y) + dy) :
                            (1 - ((arrowY + dy - gs.t) / gs.h));

                        if(options.axref === options.xref) {
                            update[annbase + '.ax'] = xa ?
                                xa.p2r(xa.r2p(options.ax) + dx) :
                                ((arrowX + dx - gs.l) / gs.w);
                        }

                        if(options.ayref === options.yref) {
                            update[annbase + '.ay'] = ya ?
                                ya.p2r(ya.r2p(options.ay) + dy) :
                                (1 - ((arrowY + dy - gs.t) / gs.h));
                        }

                        anng.attr({
                            transform: 'rotate(' + textangle + ',' +
                                   xcenter + ',' + ycenter + ')'
                        });
                    },
                    doneFn: function(dragged) {
                        if(dragged) {
                            Plotly.relayout(gd, update);
                            var notesBox = document.querySelector('.js-notes-box-panel');
                            if(notesBox) notesBox.redraw(notesBox.selectedObj);
                        }
                    }
                });
            }
        };

        if(options.showarrow) drawArrow(0, 0);

        // create transform matrix and related functions
        var transform = Lib.rotationXYMatrix(textangle,
                annPosPx.x, annPosPx.y),
            applyTransform = Lib.apply2DTransform(transform);

        // user dragging the annotation (text, not arrow)
        if(gd._context.editable) {
            var x0,
                y0,
                update;

            dragElement.init({
                element: ann.node(),
                prepFn: function() {
                    var pos = Lib.getTranslate(ann);

                    x0 = pos.x;
                    y0 = pos.y;
                    update = {};
                },
                moveFn: function(dx, dy) {
                    ann.call(Lib.setTranslate, x0 + dx, y0 + dy);
                    var csr = 'pointer';
                    if(options.showarrow) {
                        if(options.axref === options.xref) {
                            update[annbase + '.ax'] = xa.p2r(xa.r2p(options.ax) + dx);
                        } else {
                            update[annbase + '.ax'] = options.ax + dx;
                        }

                        if(options.ayref === options.yref) {
                            update[annbase + '.ay'] = ya.p2r(ya.r2p(options.ay) + dy);
                        } else {
                            update[annbase + '.ay'] = options.ay + dy;
                        }

                        drawArrow(dx, dy);
                    }
                    else {
                        if(xa) update[annbase + '.x'] = options.x + dx / xa._m;
                        else {
                            var widthFraction = options._xsize / gs.w,
                                xLeft = options.x + options._xshift / gs.w - widthFraction / 2;

                            update[annbase + '.x'] = dragElement.align(xLeft + dx / gs.w,
                                widthFraction, 0, 1, options.xanchor);
                        }

                        if(ya) update[annbase + '.y'] = options.y + dy / ya._m;
                        else {
                            var heightFraction = options._ysize / gs.h,
                                yBottom = options.y - options._yshift / gs.h - heightFraction / 2;

                            update[annbase + '.y'] = dragElement.align(yBottom - dy / gs.h,
                                heightFraction, 0, 1, options.yanchor);
                        }
                        if(!xa || !ya) {
                            csr = dragElement.getCursor(
                                xa ? 0.5 : update[annbase + '.x'],
                                ya ? 0.5 : update[annbase + '.y'],
                                options.xanchor, options.yanchor
                            );
                        }
                    }

                    var xy1 = applyTransform(x0, y0),
                        x1 = xy1[0] + dx,
                        y1 = xy1[1] + dy;

                    ann.call(Lib.setTranslate, x0 + dx, y0 + dy);

                    anng.attr({
                        transform: 'rotate(' + textangle + ',' +
                               x1 + ',' + y1 + ')'
                    });

                    setCursor(ann, csr);
                },
                doneFn: function(dragged) {
                    setCursor(ann);
                    if(dragged) {
                        Plotly.relayout(gd, update);
                        var notesBox = document.querySelector('.js-notes-box-panel');
                        if(notesBox) notesBox.redraw(notesBox.selectedObj);
                    }
                }
            });
        }
    }

    if(gd._context.editable) {
        anntext.call(svgTextUtils.makeEditable, ann)
            .call(textLayout)
            .on('edit', function(_text) {
                options.text = _text;
                this.attr({'data-unformatted': options.text});
                this.call(textLayout);
                var update = {};
                update['annotations[' + index + '].text'] = options.text;
                if(xa && xa.autorange) {
                    update[xa._name + '.autorange'] = true;
                }
                if(ya && ya.autorange) {
                    update[ya._name + '.autorange'] = true;
                }
                Plotly.relayout(gd, update);
            });
    }
    else anntext.call(textLayout);

    // rotate and position text and background
    anng.attr({transform: 'rotate(' + textangle + ',' +
                        annPosPx.x + ',' + annPosPx.y + ')'})
        .call(Drawing.setPosition, annPosPx.x, annPosPx.y);
}

// look for intersection of two line segments
//   (1->2 and 3->4) - returns array [x,y] if they do, null if not
function lineIntersect(x1, y1, x2, y2, x3, y3, x4, y4) {
    var a = x2 - x1,
        b = x3 - x1,
        c = x4 - x3,
        d = y2 - y1,
        e = y3 - y1,
        f = y4 - y3,
        det = a * f - c * d;
    // parallel lines? intersection is undefined
    // ignore the case where they are colinear
    if(det === 0) return null;
    var t = (b * f - c * e) / det,
        u = (b * d - a * e) / det;
    // segments do not intersect?
    if(u < 0 || u > 1 || t < 0 || t > 1) return null;

    return {x: x1 + a * t, y: y1 + d * t};
}

},{"../../lib":610,"../../lib/setcursor":621,"../../lib/svg_text_utils":625,"../../plotly":637,"../../plots/cartesian/axes":642,"../../plots/plots":702,"../color":510,"../dragelement":531,"../drawing":533,"./annotation_defaults":499,"./defaults":503,"./draw_arrow_head":505,"d3":86,"fast-isnumeric":97}],505:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Color = require('../color');
var Drawing = require('../drawing');

var ARROWPATHS = require('./arrow_paths');

// add arrowhead(s) to a path or line d3 element el3
// style: 1-6, first 5 are pointers, 6 is circle, 7 is square, 8 is none
// ends is 'start', 'end' (default), 'start+end'
// mag is magnification vs. default (default 1)

module.exports = function drawArrowHead(el3, style, ends, mag) {
    if(!isNumeric(mag)) mag = 1;
    var el = el3.node(),
        headStyle = ARROWPATHS[style||0];
    if(!headStyle) return;

    if(typeof ends !== 'string' || !ends) ends = 'end';

    var scale = (Drawing.getPx(el3, 'stroke-width') || 1) * mag,
        stroke = el3.style('stroke') || Color.defaultLine,
        opacity = el3.style('stroke-opacity') || 1,
        doStart = ends.indexOf('start') >= 0,
        doEnd = ends.indexOf('end') >= 0,
        backOff = headStyle.backoff * scale,
        start,
        end,
        startRot,
        endRot;

    if(el.nodeName === 'line') {
        start = {x: +el3.attr('x1'), y: +el3.attr('y1')};
        end = {x: +el3.attr('x2'), y: +el3.attr('y2')};
        startRot = Math.atan2(start.y - end.y, start.x - end.x);
        endRot = startRot + Math.PI;
        if(backOff) {
            var backOffX = backOff * Math.cos(startRot),
                backOffY = backOff * Math.sin(startRot);

            if(doStart) {
                start.x -= backOffX;
                start.y -= backOffY;
                el3.attr({x1: start.x, y1: start.y});
            }
            if(doEnd) {
                end.x += backOffX;
                end.y += backOffY;
                el3.attr({x2: end.x, y2: end.y});
            }
        }
    }
    else if(el.nodeName === 'path') {
        var pathlen = el.getTotalLength(),
            // using dash to hide the backOff region of the path.
            // if we ever allow dash for the arrow we'll have to
            // do better than this hack... maybe just manually
            // combine the two
            dashArray = '';

        if(doStart) {
            var start0 = el.getPointAtLength(0),
                dstart = el.getPointAtLength(0.1);
            startRot = Math.atan2(start0.y - dstart.y, start0.x - dstart.x);
            start = el.getPointAtLength(Math.min(backOff, pathlen));
            if(backOff) dashArray = '0px,' + backOff + 'px,';
        }

        if(doEnd) {
            var end0 = el.getPointAtLength(pathlen),
                dend = el.getPointAtLength(pathlen - 0.1);
            endRot = Math.atan2(end0.y - dend.y, end0.x - dend.x);
            end = el.getPointAtLength(Math.max(0, pathlen - backOff));

            if(backOff) {
                var shortening = dashArray ? 2 * backOff : backOff;
                dashArray += (pathlen - shortening) + 'px,' + pathlen + 'px';
            }
        }
        else if(dashArray) dashArray += pathlen + 'px';

        if(dashArray) el3.style('stroke-dasharray', dashArray);
    }

    var drawhead = function(p, rot) {
        if(style > 5) rot = 0; // don't rotate square or circle
        d3.select(el.parentElement).append('path')
            .attr({
                'class': el3.attr('class'),
                d: headStyle.path,
                transform:
                    'translate(' + p.x + ',' + p.y + ')' +
                    'rotate(' + (rot * 180 / Math.PI) + ')' +
                    'scale(' + scale + ')'
            })
            .style({
                fill: stroke,
                opacity: opacity,
                'stroke-width': 0
            });
    };

    if(doStart) drawhead(start, startRot);
    if(doEnd) drawhead(end, endRot);
};

},{"../color":510,"../drawing":533,"./arrow_paths":500,"d3":86,"fast-isnumeric":97}],506:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var drawModule = require('./draw');

module.exports = {
    moduleType: 'component',
    name: 'annotations',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    calcAutorange: require('./calc_autorange'),
    draw: drawModule.draw,
    drawOne: drawModule.drawOne
};

},{"./attributes":501,"./calc_autorange":502,"./defaults":503,"./draw":504}],507:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// a trimmed down version of:
// https://github.com/alexcjohnson/world-calendars/blob/master/dist/index.js

module.exports = require('world-calendars/dist/main');

require('world-calendars/dist/plus');

require('world-calendars/dist/calendars/chinese');
require('world-calendars/dist/calendars/coptic');
require('world-calendars/dist/calendars/discworld');
require('world-calendars/dist/calendars/ethiopian');
require('world-calendars/dist/calendars/hebrew');
require('world-calendars/dist/calendars/islamic');
require('world-calendars/dist/calendars/julian');
require('world-calendars/dist/calendars/mayan');
require('world-calendars/dist/calendars/nanakshahi');
require('world-calendars/dist/calendars/nepali');
require('world-calendars/dist/calendars/persian');
require('world-calendars/dist/calendars/taiwan');
require('world-calendars/dist/calendars/thai');
require('world-calendars/dist/calendars/ummalqura');

},{"world-calendars/dist/calendars/chinese":1019,"world-calendars/dist/calendars/coptic":1020,"world-calendars/dist/calendars/discworld":1021,"world-calendars/dist/calendars/ethiopian":1022,"world-calendars/dist/calendars/hebrew":1023,"world-calendars/dist/calendars/islamic":1024,"world-calendars/dist/calendars/julian":1025,"world-calendars/dist/calendars/mayan":1026,"world-calendars/dist/calendars/nanakshahi":1027,"world-calendars/dist/calendars/nepali":1028,"world-calendars/dist/calendars/persian":1029,"world-calendars/dist/calendars/taiwan":1030,"world-calendars/dist/calendars/thai":1031,"world-calendars/dist/calendars/ummalqura":1032,"world-calendars/dist/main":1033,"world-calendars/dist/plus":1034}],508:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var calendars = require('./calendars');

var Lib = require('../../lib');
var constants = require('../../constants/numerical');

var EPOCHJD = constants.EPOCHJD;
var ONEDAY = constants.ONEDAY;

var attributes = {
    valType: 'enumerated',
    values: Object.keys(calendars.calendars),
    role: 'info',
    dflt: 'gregorian'
};

var handleDefaults = function(contIn, contOut, attr, dflt) {
    var attrs = {};
    attrs[attr] = attributes;

    return Lib.coerce(contIn, contOut, attrs, attr, dflt);
};

var handleTraceDefaults = function(traceIn, traceOut, coords, layout) {
    for(var i = 0; i < coords.length; i++) {
        handleDefaults(traceIn, traceOut, coords[i] + 'calendar', layout.calendar);
    }
};

// each calendar needs its own default canonical tick. I would love to use
// 2000-01-01 (or even 0000-01-01) for them all but they don't necessarily
// all support either of those dates. Instead I'll use the most significant
// number they *do* support, biased toward the present day.
var CANONICAL_TICK = {
    chinese: '2000-01-01',
    coptic: '2000-01-01',
    discworld: '2000-01-01',
    ethiopian: '2000-01-01',
    hebrew: '5000-01-01',
    islamic: '1000-01-01',
    julian: '2000-01-01',
    mayan: '5000-01-01',
    nanakshahi: '1000-01-01',
    nepali: '2000-01-01',
    persian: '1000-01-01',
    jalali: '1000-01-01',
    taiwan: '1000-01-01',
    thai: '2000-01-01',
    ummalqura: '1400-01-01'
};

// Start on a Sunday - for week ticks
// Discworld and Mayan calendars don't have 7-day weeks but we're going to give them
// 7-day week ticks so start on our Sundays.
// If anyone really cares we can customize the auto tick spacings for these calendars.
var CANONICAL_SUNDAY = {
    chinese: '2000-01-02',
    coptic: '2000-01-03',
    discworld: '2000-01-03',
    ethiopian: '2000-01-05',
    hebrew: '5000-01-01',
    islamic: '1000-01-02',
    julian: '2000-01-03',
    mayan: '5000-01-01',
    nanakshahi: '1000-01-05',
    nepali: '2000-01-05',
    persian: '1000-01-01',
    jalali: '1000-01-01',
    taiwan: '1000-01-04',
    thai: '2000-01-04',
    ummalqura: '1400-01-06'
};

var DFLTRANGE = {
    chinese: ['2000-01-01', '2001-01-01'],
    coptic: ['1700-01-01', '1701-01-01'],
    discworld: ['1800-01-01', '1801-01-01'],
    ethiopian: ['2000-01-01', '2001-01-01'],
    hebrew: ['5700-01-01', '5701-01-01'],
    islamic: ['1400-01-01', '1401-01-01'],
    julian: ['2000-01-01', '2001-01-01'],
    mayan: ['5200-01-01', '5201-01-01'],
    nanakshahi: ['0500-01-01', '0501-01-01'],
    nepali: ['2000-01-01', '2001-01-01'],
    persian: ['1400-01-01', '1401-01-01'],
    jalali: ['1400-01-01', '1401-01-01'],
    taiwan: ['0100-01-01', '0101-01-01'],
    thai: ['2500-01-01', '2501-01-01'],
    ummalqura: ['1400-01-01', '1401-01-01']
};

/*
 * convert d3 templates to world-calendars templates, so our users only need
 * to know d3's specifiers. Map space padding to no padding, and unknown fields
 * to an ugly placeholder
 */
var UNKNOWN = '##';
var d3ToWorldCalendars = {
    'd': {'0': 'dd', '-': 'd'}, // 2-digit or unpadded day of month
    'e': {'0': 'd', '-': 'd'}, // alternate, always unpadded day of month
    'a': {'0': 'D', '-': 'D'}, // short weekday name
    'A': {'0': 'DD', '-': 'DD'}, // full weekday name
    'j': {'0': 'oo', '-': 'o'}, // 3-digit or unpadded day of the year
    'W': {'0': 'ww', '-': 'w'}, // 2-digit or unpadded week of the year (Monday first)
    'm': {'0': 'mm', '-': 'm'}, // 2-digit or unpadded month number
    'b': {'0': 'M', '-': 'M'}, // short month name
    'B': {'0': 'MM', '-': 'MM'}, // full month name
    'y': {'0': 'yy', '-': 'yy'}, // 2-digit year (map unpadded to zero-padded)
    'Y': {'0': 'yyyy', '-': 'yyyy'}, // 4-digit year (map unpadded to zero-padded)
    'U': UNKNOWN, // Sunday-first week of the year
    'w': UNKNOWN, // day of the week [0(sunday),6]
    // combined format, we replace the date part with the world-calendar version
    // and the %X stays there for d3 to handle with time parts
    'c': {'0': 'D M d %X yyyy', '-': 'D M d %X yyyy'},
    'x': {'0': 'mm/dd/yyyy', '-': 'mm/dd/yyyy'}
};

function worldCalFmt(fmt, x, calendar) {
    var dateJD = Math.floor((x + 0.05) / ONEDAY) + EPOCHJD,
        cDate = getCal(calendar).fromJD(dateJD),
        i = 0,
        modifier, directive, directiveLen, directiveObj, replacementPart;
    while((i = fmt.indexOf('%', i)) !== -1) {
        modifier = fmt.charAt(i + 1);
        if(modifier === '0' || modifier === '-' || modifier === '_') {
            directiveLen = 3;
            directive = fmt.charAt(i + 2);
            if(modifier === '_') modifier = '-';
        }
        else {
            directive = modifier;
            modifier = '0';
            directiveLen = 2;
        }
        directiveObj = d3ToWorldCalendars[directive];
        if(!directiveObj) {
            i += directiveLen;
        }
        else {
            // code is recognized as a date part but world-calendars doesn't support it
            if(directiveObj === UNKNOWN) replacementPart = UNKNOWN;

            // format the cDate according to the translated directive
            else replacementPart = cDate.formatDate(directiveObj[modifier]);

            fmt = fmt.substr(0, i) + replacementPart + fmt.substr(i + directiveLen);
            i += replacementPart.length;
        }
    }
    return fmt;
}

// cache world calendars, so we don't have to reinstantiate
// during each date-time conversion
var allCals = {};
function getCal(calendar) {
    var calendarObj = allCals[calendar];
    if(calendarObj) return calendarObj;

    calendarObj = allCals[calendar] = calendars.instance(calendar);
    return calendarObj;
}

function makeAttrs(description) {
    return Lib.extendFlat({}, attributes, { description: description });
}

function makeTraceAttrsDescription(coord) {
    return 'Sets the calendar system to use with `' + coord + '` date data.';
}

var xAttrs = {
    xcalendar: makeAttrs(makeTraceAttrsDescription('x'))
};

var xyAttrs = Lib.extendFlat({}, xAttrs, {
    ycalendar: makeAttrs(makeTraceAttrsDescription('y'))
});

var xyzAttrs = Lib.extendFlat({}, xyAttrs, {
    zcalendar: makeAttrs(makeTraceAttrsDescription('z'))
});

var axisAttrs = makeAttrs([
    'Sets the calendar system to use for `range` and `tick0`',
    'if this is a date axis. This does not set the calendar for',
    'interpreting data on this axis, that\'s specified in the trace',
    'or via the global `layout.calendar`'
].join(' '));

module.exports = {
    moduleType: 'component',
    name: 'calendars',

    schema: {
        traces: {
            scatter: xyAttrs,
            bar: xyAttrs,
            heatmap: xyAttrs,
            contour: xyAttrs,
            histogram: xyAttrs,
            histogram2d: xyAttrs,
            histogram2dcontour: xyAttrs,
            scatter3d: xyzAttrs,
            surface: xyzAttrs,
            mesh3d: xyzAttrs,
            scattergl: xyAttrs,
            ohlc: xAttrs,
            candlestick: xAttrs
        },
        layout: {
            calendar: makeAttrs([
                'Sets the default calendar system to use for interpreting and',
                'displaying dates throughout the plot.'
            ].join(' ')),
            'xaxis.calendar': axisAttrs,
            'yaxis.calendar': axisAttrs,
            'scene.xaxis.calendar': axisAttrs,
            'scene.yaxis.calendar': axisAttrs,
            'scene.zaxis.calendar': axisAttrs
        },
        transforms: {
            filter: {
                valuecalendar: makeAttrs([
                    'Sets the calendar system to use for `value`, if it is a date.'
                ].join(' ')),
                targetcalendar: makeAttrs([
                    'Sets the calendar system to use for `target`, if it is an',
                    'array of dates. If `target` is a string (eg *x*) we use the',
                    'corresponding trace attribute (eg `xcalendar`) if it exists,',
                    'even if `targetcalendar` is provided.'
                ].join(' '))
            }
        }
    },

    layoutAttributes: attributes,

    handleDefaults: handleDefaults,
    handleTraceDefaults: handleTraceDefaults,

    CANONICAL_SUNDAY: CANONICAL_SUNDAY,
    CANONICAL_TICK: CANONICAL_TICK,
    DFLTRANGE: DFLTRANGE,

    getCal: getCal,
    worldCalFmt: worldCalFmt
};

},{"../../constants/numerical":593,"../../lib":610,"./calendars":507}],509:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


// IMPORTANT - default colors should be in hex for compatibility
exports.defaults = [
    '#1f77b4',  // muted blue
    '#ff7f0e',  // safety orange
    '#2ca02c',  // cooked asparagus green
    '#d62728',  // brick red
    '#9467bd',  // muted purple
    '#8c564b',  // chestnut brown
    '#e377c2',  // raspberry yogurt pink
    '#7f7f7f',  // middle gray
    '#bcbd22',  // curry yellow-green
    '#17becf'   // blue-teal
];

exports.defaultLine = '#444';

exports.lightLine = '#eee';

exports.background = '#fff';

exports.borderLine = '#BEC8D9';

// with axis.color and Color.interp we aren't using lightLine
// itself anymore, instead interpolating between axis.color
// and the background color using tinycolor.mix. lightFraction
// gives back exactly lightLine if the other colors are defaults.
exports.lightFraction = 100 * (0xe - 0x4) / (0xf - 0x4);

},{}],510:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');
var isNumeric = require('fast-isnumeric');

var color = module.exports = {};

var colorAttrs = require('./attributes');
color.defaults = colorAttrs.defaults;
color.defaultLine = colorAttrs.defaultLine;
color.lightLine = colorAttrs.lightLine;
color.background = colorAttrs.background;

color.tinyRGB = function(tc) {
    var c = tc.toRgb();
    return 'rgb(' + Math.round(c.r) + ', ' +
        Math.round(c.g) + ', ' + Math.round(c.b) + ')';
};

color.rgb = function(cstr) { return color.tinyRGB(tinycolor(cstr)); };

color.opacity = function(cstr) { return cstr ? tinycolor(cstr).getAlpha() : 0; };

color.addOpacity = function(cstr, op) {
    var c = tinycolor(cstr).toRgb();
    return 'rgba(' + Math.round(c.r) + ', ' +
        Math.round(c.g) + ', ' + Math.round(c.b) + ', ' + op + ')';
};

// combine two colors into one apparent color
// if back has transparency or is missing,
// color.background is assumed behind it
color.combine = function(front, back) {
    var fc = tinycolor(front).toRgb();
    if(fc.a === 1) return tinycolor(front).toRgbString();

    var bc = tinycolor(back || color.background).toRgb(),
        bcflat = bc.a === 1 ? bc : {
            r: 255 * (1 - bc.a) + bc.r * bc.a,
            g: 255 * (1 - bc.a) + bc.g * bc.a,
            b: 255 * (1 - bc.a) + bc.b * bc.a
        },
        fcflat = {
            r: bcflat.r * (1 - fc.a) + fc.r * fc.a,
            g: bcflat.g * (1 - fc.a) + fc.g * fc.a,
            b: bcflat.b * (1 - fc.a) + fc.b * fc.a
        };
    return tinycolor(fcflat).toRgbString();
};

color.contrast = function(cstr, lightAmount, darkAmount) {
    var tc = tinycolor(cstr);

    var newColor = tc.isLight() ?
        tc.darken(darkAmount) :
        tc.lighten(lightAmount);

    return newColor.toString();
};

color.stroke = function(s, c) {
    var tc = tinycolor(c);
    s.style({'stroke': color.tinyRGB(tc), 'stroke-opacity': tc.getAlpha()});
};

color.fill = function(s, c) {
    var tc = tinycolor(c);
    s.style({
        'fill': color.tinyRGB(tc),
        'fill-opacity': tc.getAlpha()
    });
};

// search container for colors with the deprecated rgb(fractions) format
// and convert them to rgb(0-255 values)
color.clean = function(container) {
    if(!container || typeof container !== 'object') return;

    var keys = Object.keys(container),
        i,
        j,
        key,
        val;

    for(i = 0; i < keys.length; i++) {
        key = keys[i];
        val = container[key];

        // only sanitize keys that end in "color" or "colorscale"
        if(key.substr(key.length - 5) === 'color') {
            if(Array.isArray(val)) {
                for(j = 0; j < val.length; j++) val[j] = cleanOne(val[j]);
            }
            else container[key] = cleanOne(val);
        }
        else if(key.substr(key.length - 10) === 'colorscale' && Array.isArray(val)) {
            // colorscales have the format [[0, color1], [frac, color2], ... [1, colorN]]
            for(j = 0; j < val.length; j++) {
                if(Array.isArray(val[j])) val[j][1] = cleanOne(val[j][1]);
            }
        }
        // recurse into arrays of objects, and plain objects
        else if(Array.isArray(val)) {
            var el0 = val[0];
            if(!Array.isArray(el0) && el0 && typeof el0 === 'object') {
                for(j = 0; j < val.length; j++) color.clean(val[j]);
            }
        }
        else if(val && typeof val === 'object') color.clean(val);
    }
};

function cleanOne(val) {
    if(isNumeric(val) || typeof val !== 'string') return val;

    var valTrim = val.trim();
    if(valTrim.substr(0, 3) !== 'rgb') return val;

    var match = valTrim.match(/^rgba?\s*\(([^()]*)\)$/);
    if(!match) return val;

    var parts = match[1].trim().split(/\s*[\s,]\s*/),
        rgba = valTrim.charAt(3) === 'a' && parts.length === 4;
    if(!rgba && parts.length !== 3) return val;

    for(var i = 0; i < parts.length; i++) {
        if(!parts[i].length) return val;
        parts[i] = Number(parts[i]);

        // all parts must be non-negative numbers
        if(!(parts[i] >= 0)) return val;
        // alpha>1 gets clipped to 1
        if(i === 3) {
            if(parts[i] > 1) parts[i] = 1;
        }
        // r, g, b must be < 1 (ie 1 itself is not allowed)
        else if(parts[i] >= 1) return val;
    }

    var rgbStr = Math.round(parts[0] * 255) + ', ' +
        Math.round(parts[1] * 255) + ', ' +
        Math.round(parts[2] * 255);

    if(rgba) return 'rgba(' + rgbStr + ', ' + parts[3] + ')';
    return 'rgb(' + rgbStr + ')';
}

},{"./attributes":509,"fast-isnumeric":97,"tinycolor2":985}],511:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var axesAttrs = require('../../plots/cartesian/layout_attributes');
var fontAttrs = require('../../plots/font_attributes');
var extendFlat = require('../../lib/extend').extendFlat;


module.exports = {
// TODO: only right is supported currently
//     orient: {
//         valType: 'enumerated',
//         role: 'info',
//         values: ['left', 'right', 'top', 'bottom'],
//         dflt: 'right',
//         description: [
//             'Determines which side are the labels on',
//             '(so left and right make vertical bars, etc.)'
//         ].join(' ')
//     },
    thicknessmode: {
        valType: 'enumerated',
        values: ['fraction', 'pixels'],
        role: 'style',
        dflt: 'pixels',
        description: [
            'Determines whether this color bar\'s thickness',
            '(i.e. the measure in the constant color direction)',
            'is set in units of plot *fraction* or in *pixels*.',
            'Use `thickness` to set the value.'
        ].join(' ')
    },
    thickness: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 30,
        description: [
            'Sets the thickness of the color bar',
            'This measure excludes the size of the padding, ticks and labels.'
        ].join(' ')
    },
    lenmode: {
        valType: 'enumerated',
        values: ['fraction', 'pixels'],
        role: 'info',
        dflt: 'fraction',
        description: [
            'Determines whether this color bar\'s length',
            '(i.e. the measure in the color variation direction)',
            'is set in units of plot *fraction* or in *pixels.',
            'Use `len` to set the value.'
        ].join(' ')
    },
    len: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: [
            'Sets the length of the color bar',
            'This measure excludes the padding of both ends.',
            'That is, the color bar length is this length minus the',
            'padding on both ends.'
        ].join(' ')
    },
    x: {
        valType: 'number',
        dflt: 1.02,
        min: -2,
        max: 3,
        role: 'style',
        description: [
            'Sets the x position of the color bar (in plot fraction).'
        ].join(' ')
    },
    xanchor: {
        valType: 'enumerated',
        values: ['left', 'center', 'right'],
        dflt: 'left',
        role: 'style',
        description: [
            'Sets this color bar\'s horizontal position anchor.',
            'This anchor binds the `x` position to the *left*, *center*',
            'or *right* of the color bar.'
        ].join(' ')
    },
    xpad: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 10,
        description: 'Sets the amount of padding (in px) along the x direction.'
    },
    y: {
        valType: 'number',
        role: 'style',
        dflt: 0.5,
        min: -2,
        max: 3,
        description: [
            'Sets the y position of the color bar (in plot fraction).'
        ].join(' ')
    },
    yanchor: {
        valType: 'enumerated',
        values: ['top', 'middle', 'bottom'],
        role: 'style',
        dflt: 'middle',
        description: [
            'Sets this color bar\'s vertical position anchor',
            'This anchor binds the `y` position to the *top*, *middle*',
            'or *bottom* of the color bar.'
        ].join(' ')
    },
    ypad: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 10,
        description: 'Sets the amount of padding (in px) along the y direction.'
    },
    // a possible line around the bar itself
    outlinecolor: axesAttrs.linecolor,
    outlinewidth: axesAttrs.linewidth,
    // Should outlinewidth have {dflt: 0} ?
    // another possible line outside the padding and tick labels
    bordercolor: axesAttrs.linecolor,
    borderwidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 0,
        description: [
            'Sets the width (in px) or the border enclosing this color bar.'
        ].join(' ')
    },
    bgcolor: {
        valType: 'color',
        role: 'style',
        dflt: 'rgba(0,0,0,0)',
        description: 'Sets the color of padded area.'
    },
    // tick and title properties named and function exactly as in axes
    tickmode: axesAttrs.tickmode,
    nticks: axesAttrs.nticks,
    tick0: axesAttrs.tick0,
    dtick: axesAttrs.dtick,
    tickvals: axesAttrs.tickvals,
    ticktext: axesAttrs.ticktext,
    ticks: extendFlat({}, axesAttrs.ticks, {dflt: ''}),
    ticklen: axesAttrs.ticklen,
    tickwidth: axesAttrs.tickwidth,
    tickcolor: axesAttrs.tickcolor,
    showticklabels: axesAttrs.showticklabels,
    tickfont: axesAttrs.tickfont,
    tickangle: axesAttrs.tickangle,
    tickformat: axesAttrs.tickformat,
    tickprefix: axesAttrs.tickprefix,
    showtickprefix: axesAttrs.showtickprefix,
    ticksuffix: axesAttrs.ticksuffix,
    showticksuffix: axesAttrs.showticksuffix,
    separatethousands: axesAttrs.separatethousands,
    exponentformat: axesAttrs.exponentformat,
    showexponent: axesAttrs.showexponent,
    title: {
        valType: 'string',
        role: 'info',
        dflt: 'Click to enter colorscale title',
        description: 'Sets the title of the color bar.'
    },
    titlefont: extendFlat({}, fontAttrs, {
        description: [
            'Sets this color bar\'s title font.'
        ].join(' ')
    }),
    titleside: {
        valType: 'enumerated',
        values: ['right', 'top', 'bottom'],
        role: 'style',
        dflt: 'top',
        description: [
            'Determines the location of the colorbar title',
            'with respect to the color bar.'
        ].join(' ')
    }
};

},{"../../lib/extend":603,"../../plots/cartesian/layout_attributes":651,"../../plots/font_attributes":662}],512:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var handleTickValueDefaults = require('../../plots/cartesian/tick_value_defaults');
var handleTickMarkDefaults = require('../../plots/cartesian/tick_mark_defaults');
var handleTickLabelDefaults = require('../../plots/cartesian/tick_label_defaults');

var attributes = require('./attributes');


module.exports = function colorbarDefaults(containerIn, containerOut, layout) {
    var colorbarOut = containerOut.colorbar = {},
        colorbarIn = containerIn.colorbar || {};

    function coerce(attr, dflt) {
        return Lib.coerce(colorbarIn, colorbarOut, attributes, attr, dflt);
    }

    var thicknessmode = coerce('thicknessmode');
    coerce('thickness', (thicknessmode === 'fraction') ?
        30 / (layout.width - layout.margin.l - layout.margin.r) :
        30
    );

    var lenmode = coerce('lenmode');
    coerce('len', (lenmode === 'fraction') ?
        1 :
        layout.height - layout.margin.t - layout.margin.b
    );

    coerce('x');
    coerce('xanchor');
    coerce('xpad');
    coerce('y');
    coerce('yanchor');
    coerce('ypad');
    Lib.noneOrAll(colorbarIn, colorbarOut, ['x', 'y']);

    coerce('outlinecolor');
    coerce('outlinewidth');
    coerce('bordercolor');
    coerce('borderwidth');
    coerce('bgcolor');

    handleTickValueDefaults(colorbarIn, colorbarOut, coerce, 'linear');

    handleTickLabelDefaults(colorbarIn, colorbarOut, coerce, 'linear',
        {outerTicks: false, font: layout.font, noHover: true});

    handleTickMarkDefaults(colorbarIn, colorbarOut, coerce, 'linear',
        {outerTicks: false, font: layout.font, noHover: true});

    coerce('title');
    Lib.coerceFont(coerce, 'titlefont', layout.font);
    coerce('titleside');
};

},{"../../lib":610,"../../plots/cartesian/tick_label_defaults":657,"../../plots/cartesian/tick_mark_defaults":658,"../../plots/cartesian/tick_value_defaults":659,"./attributes":511}],513:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');
var dragElement = require('../dragelement');
var Lib = require('../../lib');
var extendFlat = require('../../lib/extend').extendFlat;
var setCursor = require('../../lib/setcursor');
var Drawing = require('../drawing');
var Color = require('../color');
var Titles = require('../titles');

var handleAxisDefaults = require('../../plots/cartesian/axis_defaults');
var handleAxisPositionDefaults = require('../../plots/cartesian/position_defaults');
var axisLayoutAttrs = require('../../plots/cartesian/layout_attributes');

var attributes = require('./attributes');


module.exports = function draw(gd, id) {
    // opts: options object, containing everything from attributes
    // plus a few others that are the equivalent of the colorbar "data"
    var opts = {};
    Object.keys(attributes).forEach(function(k) {
        opts[k] = null;
    });
    // fillcolor can be a d3 scale, domain is z values, range is colors
    // or leave it out for no fill,
    // or set to a string constant for single-color fill
    opts.fillcolor = null;
    // line.color has the same options as fillcolor
    opts.line = {color: null, width: null, dash: null};
    // levels of lines to draw.
    // note that this DOES NOT determine the extent of the bar
    // that's given by the domain of fillcolor
    // (or line.color if no fillcolor domain)
    opts.levels = {start: null, end: null, size: null};
    // separate fill levels (for example, heatmap coloring of a
    // contour map) if this is omitted, fillcolors will be
    // evaluated halfway between levels
    opts.filllevels = null;

    function component() {
        var fullLayout = gd._fullLayout,
            gs = fullLayout._size;
        if((typeof opts.fillcolor !== 'function') &&
                (typeof opts.line.color !== 'function')) {
            fullLayout._infolayer.selectAll('g.' + id).remove();
            return;
        }
        var zrange = d3.extent(((typeof opts.fillcolor === 'function') ?
                opts.fillcolor : opts.line.color).domain()),
            linelevels = [],
            filllevels = [],
            l,
            linecolormap = typeof opts.line.color === 'function' ?
                opts.line.color : function() { return opts.line.color; },
            fillcolormap = typeof opts.fillcolor === 'function' ?
                opts.fillcolor : function() { return opts.fillcolor; };

        var l0 = opts.levels.end + opts.levels.size / 100,
            ls = opts.levels.size,
            zr0 = (1.001 * zrange[0] - 0.001 * zrange[1]),
            zr1 = (1.001 * zrange[1] - 0.001 * zrange[0]);
        for(l = opts.levels.start; (l - l0) * ls < 0; l += ls) {
            if(l > zr0 && l < zr1) linelevels.push(l);
        }

        if(typeof opts.fillcolor === 'function') {
            if(opts.filllevels) {
                l0 = opts.filllevels.end + opts.filllevels.size / 100;
                ls = opts.filllevels.size;
                for(l = opts.filllevels.start; (l - l0) * ls < 0; l += ls) {
                    if(l > zrange[0] && l < zrange[1]) filllevels.push(l);
                }
            }
            else {
                filllevels = linelevels.map(function(v) {
                    return v - opts.levels.size / 2;
                });
                filllevels.push(filllevels[filllevels.length - 1] +
                    opts.levels.size);
            }
        }
        else if(opts.fillcolor && typeof opts.fillcolor === 'string') {
            // doesn't matter what this value is, with a single value
            // we'll make a single fill rect covering the whole bar
            filllevels = [0];
        }

        if(opts.levels.size < 0) {
            linelevels.reverse();
            filllevels.reverse();
        }

        // now make a Plotly Axes object to scale with and draw ticks
        // TODO: does not support orientation other than right

        // we calculate pixel sizes based on the specified graph size,
        // not the actual (in case something pushed the margins around)
        // which is a little odd but avoids an odd iterative effect
        // when the colorbar itself is pushing the margins.
        // but then the fractional size is calculated based on the
        // actual graph size, so that the axes will size correctly.
        var originalPlotHeight = fullLayout.height - fullLayout.margin.t - fullLayout.margin.b,
            originalPlotWidth = fullLayout.width - fullLayout.margin.l - fullLayout.margin.r,
            thickPx = Math.round(opts.thickness *
                (opts.thicknessmode === 'fraction' ? originalPlotWidth : 1)),
            thickFrac = thickPx / gs.w,
            lenPx = Math.round(opts.len *
                (opts.lenmode === 'fraction' ? originalPlotHeight : 1)),
            lenFrac = lenPx / gs.h,
            xpadFrac = opts.xpad / gs.w,
            yExtraPx = (opts.borderwidth + opts.outlinewidth) / 2,
            ypadFrac = opts.ypad / gs.h,

            // x positioning: do it initially just for left anchor,
            // then fix at the end (since we don't know the width yet)
            xLeft = Math.round(opts.x * gs.w + opts.xpad),
            // for dragging... this is getting a little muddled...
            xLeftFrac = opts.x - thickFrac *
                ({middle: 0.5, right: 1}[opts.xanchor]||0),

            // y positioning we can do correctly from the start
            yBottomFrac = opts.y + lenFrac *
                (({top: -0.5, bottom: 0.5}[opts.yanchor] || 0) - 0.5),
            yBottomPx = Math.round(gs.h * (1 - yBottomFrac)),
            yTopPx = yBottomPx - lenPx,
            titleEl,
            cbAxisIn = {
                type: 'linear',
                range: zrange,
                tickmode: opts.tickmode,
                nticks: opts.nticks,
                tick0: opts.tick0,
                dtick: opts.dtick,
                tickvals: opts.tickvals,
                ticktext: opts.ticktext,
                ticks: opts.ticks,
                ticklen: opts.ticklen,
                tickwidth: opts.tickwidth,
                tickcolor: opts.tickcolor,
                showticklabels: opts.showticklabels,
                tickfont: opts.tickfont,
                tickangle: opts.tickangle,
                tickformat: opts.tickformat,
                exponentformat: opts.exponentformat,
                separatethousands: opts.separatethousands,
                showexponent: opts.showexponent,
                showtickprefix: opts.showtickprefix,
                tickprefix: opts.tickprefix,
                showticksuffix: opts.showticksuffix,
                ticksuffix: opts.ticksuffix,
                title: opts.title,
                titlefont: opts.titlefont,
                anchor: 'free',
                position: 1
            },
            cbAxisOut = {},
            axisOptions = {
                letter: 'y',
                font: fullLayout.font,
                noHover: true,
                calendar: fullLayout.calendar  // not really necessary (yet?)
            };

        // Coerce w.r.t. Axes layoutAttributes:
        // re-use axes.js logic without updating _fullData
        function coerce(attr, dflt) {
            return Lib.coerce(cbAxisIn, cbAxisOut, axisLayoutAttrs, attr, dflt);
        }

        // Prepare the Plotly axis object
        handleAxisDefaults(cbAxisIn, cbAxisOut, coerce, axisOptions);
        handleAxisPositionDefaults(cbAxisIn, cbAxisOut, coerce, axisOptions);

        cbAxisOut._id = 'y' + id;
        cbAxisOut._gd = gd;

        // position can't go in through supplyDefaults
        // because that restricts it to [0,1]
        cbAxisOut.position = opts.x + xpadFrac + thickFrac;

        // save for other callers to access this axis
        component.axis = cbAxisOut;

        if(['top', 'bottom'].indexOf(opts.titleside) !== -1) {
            cbAxisOut.titleside = opts.titleside;
            cbAxisOut.titlex = opts.x + xpadFrac;
            cbAxisOut.titley = yBottomFrac +
                (opts.titleside === 'top' ? lenFrac - ypadFrac : ypadFrac);
        }

        if(opts.line.color && opts.tickmode === 'auto') {
            cbAxisOut.tickmode = 'linear';
            cbAxisOut.tick0 = opts.levels.start;
            var dtick = opts.levels.size;
            // expand if too many contours, so we don't get too many ticks
            var autoNtick = Lib.constrain(
                    (yBottomPx - yTopPx) / 50, 4, 15) + 1,
                dtFactor = (zrange[1] - zrange[0]) /
                    ((opts.nticks || autoNtick) * dtick);
            if(dtFactor > 1) {
                var dtexp = Math.pow(10, Math.floor(
                    Math.log(dtFactor) / Math.LN10));
                dtick *= dtexp * Lib.roundUp(dtFactor / dtexp, [2, 5, 10]);
                // if the contours are at round multiples, reset tick0
                // so they're still at round multiples. Otherwise,
                // keep the first label on the first contour level
                if((Math.abs(opts.levels.start) /
                        opts.levels.size + 1e-6) % 1 < 2e-6) {
                    cbAxisOut.tick0 = 0;
                }
            }
            cbAxisOut.dtick = dtick;
        }

        // set domain after init, because we may want to
        // allow it outside [0,1]
        cbAxisOut.domain = [
            yBottomFrac + ypadFrac,
            yBottomFrac + lenFrac - ypadFrac
        ];
        cbAxisOut.setScale();

        // now draw the elements
        var container = fullLayout._infolayer.selectAll('g.' + id).data([0]);
        container.enter().append('g').classed(id, true)
            .each(function() {
                var s = d3.select(this);
                s.append('rect').classed('cbbg', true);
                s.append('g').classed('cbfills', true);
                s.append('g').classed('cblines', true);
                s.append('g').classed('cbaxis', true).classed('crisp', true);
                s.append('g').classed('cbtitleunshift', true)
                    .append('g').classed('cbtitle', true);
                s.append('rect').classed('cboutline', true);
                s.select('.cbtitle').datum(0);
            });
        container.attr('transform', 'translate(' + Math.round(gs.l) +
            ',' + Math.round(gs.t) + ')');
        // TODO: this opposite transform is a hack until we make it
        // more rational which items get this offset
        var titleCont = container.select('.cbtitleunshift')
            .attr('transform', 'translate(-' +
                Math.round(gs.l) + ',-' +
                Math.round(gs.t) + ')');

        cbAxisOut._axislayer = container.select('.cbaxis');
        var titleHeight = 0;
        if(['top', 'bottom'].indexOf(opts.titleside) !== -1) {
            // draw the title so we know how much room it needs
            // when we squish the axis. This one only applies to
            // top or bottom titles, not right side.
            var x = gs.l + (opts.x + xpadFrac) * gs.w,
                fontSize = cbAxisOut.titlefont.size,
                y;

            if(opts.titleside === 'top') {
                y = (1 - (yBottomFrac + lenFrac - ypadFrac)) * gs.h +
                    gs.t + 3 + fontSize * 0.75;
            }
            else {
                y = (1 - (yBottomFrac + ypadFrac)) * gs.h +
                    gs.t - 3 - fontSize * 0.25;
            }
            drawTitle(cbAxisOut._id + 'title', {
                attributes: {x: x, y: y, 'text-anchor': 'start'}
            });
        }

        function drawAxis() {
            if(['top', 'bottom'].indexOf(opts.titleside) !== -1) {
                // squish the axis top to make room for the title
                var titleGroup = container.select('.cbtitle'),
                    titleText = titleGroup.select('text'),
                    titleTrans =
                        [-opts.outlinewidth / 2, opts.outlinewidth / 2],
                    mathJaxNode = titleGroup
                        .select('.h' + cbAxisOut._id + 'title-math-group')
                        .node(),
                    lineSize = 15.6;
                if(titleText.node()) {
                    lineSize =
                        parseInt(titleText.style('font-size'), 10) * 1.3;
                }
                if(mathJaxNode) {
                    titleHeight = Drawing.bBox(mathJaxNode).height;
                    if(titleHeight > lineSize) {
                        // not entirely sure how mathjax is doing
                        // vertical alignment, but this seems to work.
                        titleTrans[1] -= (titleHeight - lineSize) / 2;
                    }
                }
                else if(titleText.node() &&
                        !titleText.classed('js-placeholder')) {
                    titleHeight = Drawing.bBox(
                        titleGroup.node()).height;
                }
                if(titleHeight) {
                    // buffer btwn colorbar and title
                    // TODO: configurable
                    titleHeight += 5;

                    if(opts.titleside === 'top') {
                        cbAxisOut.domain[1] -= titleHeight / gs.h;
                        titleTrans[1] *= -1;
                    }
                    else {
                        cbAxisOut.domain[0] += titleHeight / gs.h;
                        var nlines = Math.max(1,
                            titleText.selectAll('tspan.line').size());
                        titleTrans[1] += (1 - nlines) * lineSize;
                    }

                    titleGroup.attr('transform',
                        'translate(' + titleTrans + ')');

                    cbAxisOut.setScale();
                }
            }

            container.selectAll('.cbfills,.cblines,.cbaxis')
                .attr('transform', 'translate(0,' +
                    Math.round(gs.h * (1 - cbAxisOut.domain[1])) + ')');

            var fills = container.select('.cbfills')
                .selectAll('rect.cbfill')
                    .data(filllevels);
            fills.enter().append('rect')
                .classed('cbfill', true)
                .style('stroke', 'none');
            fills.exit().remove();
            fills.each(function(d, i) {
                var z = [
                    (i === 0) ? zrange[0] :
                        (filllevels[i] + filllevels[i - 1]) / 2,
                    (i === filllevels.length - 1) ? zrange[1] :
                        (filllevels[i] + filllevels[i + 1]) / 2
                ]
                .map(cbAxisOut.c2p)
                .map(Math.round);

                // offset the side adjoining the next rectangle so they
                // overlap, to prevent antialiasing gaps
                if(i !== filllevels.length - 1) {
                    z[1] += (z[1] > z[0]) ? 1 : -1;
                }


                // Tinycolor can't handle exponents and
                // at this scale, removing it makes no difference.
                var colorString = fillcolormap(d).replace('e-', ''),
                    opaqueColor = tinycolor(colorString).toHexString();

                // Colorbar cannot currently support opacities so we
                // use an opaque fill even when alpha channels present
                d3.select(this).attr({
                    x: xLeft,
                    width: Math.max(thickPx, 2),
                    y: d3.min(z),
                    height: Math.max(d3.max(z) - d3.min(z), 2),
                    fill: opaqueColor
                });
            });

            var lines = container.select('.cblines')
                .selectAll('path.cbline')
                    .data(opts.line.color && opts.line.width ?
                        linelevels : []);
            lines.enter().append('path')
                .classed('cbline', true);
            lines.exit().remove();
            lines.each(function(d) {
                d3.select(this)
                    .attr('d', 'M' + xLeft + ',' +
                        (Math.round(cbAxisOut.c2p(d)) + (opts.line.width / 2) % 1) +
                        'h' + thickPx)
                    .call(Drawing.lineGroupStyle,
                        opts.line.width, linecolormap(d), opts.line.dash);
            });

            // force full redraw of labels and ticks
            cbAxisOut._axislayer.selectAll('g.' + cbAxisOut._id + 'tick,path')
                .remove();

            cbAxisOut._pos = xLeft + thickPx +
                (opts.outlinewidth||0) / 2 - (opts.ticks === 'outside' ? 1 : 0);
            cbAxisOut.side = 'right';

            // separate out axis and title drawing,
            // so we don't need such complicated logic in Titles.draw
            // if title is on the top or bottom, we've already drawn it
            // this title call only handles side=right
            return Lib.syncOrAsync([
                function() {
                    return Axes.doTicks(gd, cbAxisOut, true);
                },
                function() {
                    if(['top', 'bottom'].indexOf(opts.titleside) === -1) {
                        var fontSize = cbAxisOut.titlefont.size,
                            y = cbAxisOut._offset + cbAxisOut._length / 2,
                            x = gs.l + (cbAxisOut.position || 0) * gs.w + ((cbAxisOut.side === 'right') ?
                                10 + fontSize * ((cbAxisOut.showticklabels ? 1 : 0.5)) :
                                -10 - fontSize * ((cbAxisOut.showticklabels ? 0.5 : 0)));

                        // the 'h' + is a hack to get around the fact that
                        // convertToTspans rotates any 'y...' class by 90 degrees.
                        // TODO: find a better way to control this.
                        drawTitle('h' + cbAxisOut._id + 'title', {
                            avoid: {
                                selection: d3.select(gd).selectAll('g.' + cbAxisOut._id + 'tick'),
                                side: opts.titleside,
                                offsetLeft: gs.l,
                                offsetTop: gs.t,
                                maxShift: fullLayout.width
                            },
                            attributes: {x: x, y: y, 'text-anchor': 'middle'},
                            transform: {rotate: '-90', offset: 0}
                        });
                    }
                }]);
        }

        function drawTitle(titleClass, titleOpts) {
            var trace = getTrace(),
                propName;
            if(Registry.traceIs(trace, 'markerColorscale')) {
                propName = 'marker.colorbar.title';
            }
            else propName = 'colorbar.title';

            var dfltTitleOpts = {
                propContainer: cbAxisOut,
                propName: propName,
                traceIndex: trace.index,
                dfltName: 'colorscale',
                containerGroup: container.select('.cbtitle')
            };

            // this class-to-rotate thing with convertToTspans is
            // getting hackier and hackier... delete groups with the
            // wrong class (in case earlier the colorbar was drawn on
            // a different side, I think?)
            var otherClass = titleClass.charAt(0) === 'h' ?
                titleClass.substr(1) : ('h' + titleClass);
            container.selectAll('.' + otherClass + ',.' + otherClass + '-math-group')
                .remove();

            Titles.draw(gd, titleClass,
                extendFlat(dfltTitleOpts, titleOpts || {}));
        }

        function positionCB() {
            // wait for the axis & title to finish rendering before
            // continuing positioning
            // TODO: why are we redrawing multiple times now with this?
            // I guess autoMargin doesn't like being post-promise?
            var innerWidth = thickPx + opts.outlinewidth / 2 +
                    Drawing.bBox(cbAxisOut._axislayer.node()).width;
            titleEl = titleCont.select('text');
            if(titleEl.node() && !titleEl.classed('js-placeholder')) {
                var mathJaxNode = titleCont
                        .select('.h' + cbAxisOut._id + 'title-math-group')
                        .node(),
                    titleWidth;
                if(mathJaxNode &&
                        ['top', 'bottom'].indexOf(opts.titleside) !== -1) {
                    titleWidth = Drawing.bBox(mathJaxNode).width;
                }
                else {
                    // note: the formula below works for all titlesides,
                    // (except for top/bottom mathjax, above)
                    // but the weird gs.l is because the titleunshift
                    // transform gets removed by Drawing.bBox
                    titleWidth =
                        Drawing.bBox(titleCont.node()).right -
                        xLeft - gs.l;
                }
                innerWidth = Math.max(innerWidth, titleWidth);
            }

            var outerwidth = 2 * opts.xpad + innerWidth +
                    opts.borderwidth + opts.outlinewidth / 2,
                outerheight = yBottomPx - yTopPx;

            container.select('.cbbg').attr({
                x: xLeft - opts.xpad -
                    (opts.borderwidth + opts.outlinewidth) / 2,
                y: yTopPx - yExtraPx,
                width: Math.max(outerwidth, 2),
                height: Math.max(outerheight + 2 * yExtraPx, 2)
            })
            .call(Color.fill, opts.bgcolor)
            .call(Color.stroke, opts.bordercolor)
            .style({'stroke-width': opts.borderwidth});

            container.selectAll('.cboutline').attr({
                x: xLeft,
                y: yTopPx + opts.ypad +
                    (opts.titleside === 'top' ? titleHeight : 0),
                width: Math.max(thickPx, 2),
                height: Math.max(outerheight - 2 * opts.ypad - titleHeight, 2)
            })
            .call(Color.stroke, opts.outlinecolor)
            .style({
                fill: 'None',
                'stroke-width': opts.outlinewidth
            });

            // fix positioning for xanchor!='left'
            var xoffset = ({center: 0.5, right: 1}[opts.xanchor] || 0) *
                outerwidth;
            container.attr('transform',
                'translate(' + (gs.l - xoffset) + ',' + gs.t + ')');

            // auto margin adjustment
            Plots.autoMargin(gd, id, {
                x: opts.x,
                y: opts.y,
                l: outerwidth * ({right: 1, center: 0.5}[opts.xanchor] || 0),
                r: outerwidth * ({left: 1, center: 0.5}[opts.xanchor] || 0),
                t: outerheight * ({bottom: 1, middle: 0.5}[opts.yanchor] || 0),
                b: outerheight * ({top: 1, middle: 0.5}[opts.yanchor] || 0)
            });
        }

        var cbDone = Lib.syncOrAsync([
            Plots.previousPromises,
            drawAxis,
            Plots.previousPromises,
            positionCB
        ], gd);

        if(cbDone && cbDone.then) (gd._promises || []).push(cbDone);

        // dragging...
        if(gd._context.editable) {
            var t0,
                xf,
                yf;

            dragElement.init({
                element: container.node(),
                prepFn: function() {
                    t0 = container.attr('transform');
                    setCursor(container);
                },
                moveFn: function(dx, dy) {
                    container.attr('transform',
                        t0 + ' ' + 'translate(' + dx + ',' + dy + ')');

                    xf = dragElement.align(xLeftFrac + (dx / gs.w), thickFrac,
                        0, 1, opts.xanchor);
                    yf = dragElement.align(yBottomFrac - (dy / gs.h), lenFrac,
                        0, 1, opts.yanchor);

                    var csr = dragElement.getCursor(xf, yf,
                        opts.xanchor, opts.yanchor);
                    setCursor(container, csr);
                },
                doneFn: function(dragged) {
                    setCursor(container);

                    if(dragged && xf !== undefined && yf !== undefined) {
                        Plotly.restyle(gd,
                            {'colorbar.x': xf, 'colorbar.y': yf},
                            getTrace().index);
                    }
                }
            });
        }
        return cbDone;
    }

    function getTrace() {
        var idNum = id.substr(2),
            i,
            trace;
        for(i = 0; i < gd._fullData.length; i++) {
            trace = gd._fullData[i];
            if(trace.uid === idNum) return trace;
        }
    }

    // setter/getters for every item defined in opts
    Object.keys(opts).forEach(function(name) {
        component[name] = function(v) {
            // getter
            if(!arguments.length) return opts[name];

            // setter - for multi-part properties,
            // set only the parts that are provided
            opts[name] = Lib.isPlainObject(opts[name]) ?
                 Lib.extendFlat(opts[name], v) :
                 v;

            return component;
        };
    });

    // or use .options to set multiple options at once via a dictionary
    component.options = function(o) {
        Object.keys(o).forEach(function(name) {
            // in case something random comes through
            // that's not an option, ignore it
            if(typeof component[name] === 'function') {
                component[name](o[name]);
            }
        });
        return component;
    };

    component._opts = opts;

    return component;
};

},{"../../lib":610,"../../lib/extend":603,"../../lib/setcursor":621,"../../plotly":637,"../../plots/cartesian/axes":642,"../../plots/cartesian/axis_defaults":644,"../../plots/cartesian/layout_attributes":651,"../../plots/cartesian/position_defaults":654,"../../plots/plots":702,"../../registry":717,"../color":510,"../dragelement":531,"../drawing":533,"../titles":584,"./attributes":511,"d3":86,"tinycolor2":985}],514:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


module.exports = function hasColorbar(container) {
    return Lib.isPlainObject(container.colorbar);
};

},{"../../lib":610}],515:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    zauto: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines the whether or not the color domain is computed',
            'with respect to the input data.'
        ].join(' ')
    },
    zmin: {
        valType: 'number',
        role: 'info',
        dflt: null,
        description: 'Sets the lower bound of color domain.'
    },
    zmax: {
        valType: 'number',
        role: 'info',
        dflt: null,
        description: 'Sets the upper bound of color domain.'
    },
    colorscale: {
        valType: 'colorscale',
        role: 'style',
        description: [
            'Sets the colorscale.',
            'The colorscale must be an array containing',
            'arrays mapping a normalized value to an',
            'rgb, rgba, hex, hsl, hsv, or named color string.',
            'At minimum, a mapping for the lowest (0) and highest (1)',
            'values are required. For example,',
            '`[[0, \'rgb(0,0,255)\', [1, \'rgb(255,0,0)\']]`.',
            'To control the bounds of the colorscale in z space,',
            'use zmin and zmax'
        ].join(' ')
    },
    autocolorscale: {
        valType: 'boolean',
        role: 'style',
        dflt: true,  // gets overrode in 'heatmap' & 'surface' for backwards comp.
        description: [
            'Determines whether or not the colorscale is picked using the sign of',
            'the input z values.'
        ].join(' ')
    },
    reversescale: {
        valType: 'boolean',
        role: 'style',
        dflt: false,
        description: 'Reverses the colorscale.'
    },
    showscale: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not a colorbar is displayed for this trace.'
        ].join(' ')
    }
};

},{}],516:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var scales = require('./scales');
var flipScale = require('./flip_scale');


module.exports = function calc(trace, vals, containerStr, cLetter) {
    var container, inputContainer;

    if(containerStr) {
        container = Lib.nestedProperty(trace, containerStr).get();
        inputContainer = Lib.nestedProperty(trace._input, containerStr).get();
    }
    else {
        container = trace;
        inputContainer = trace._input;
    }

    var auto = container[cLetter + 'auto'],
        min = container[cLetter + 'min'],
        max = container[cLetter + 'max'],
        scl = container.colorscale;

    if(auto !== false || min === undefined) {
        min = Lib.aggNums(Math.min, null, vals);
    }

    if(auto !== false || max === undefined) {
        max = Lib.aggNums(Math.max, null, vals);
    }

    if(min === max) {
        min -= 0.5;
        max += 0.5;
    }

    container[cLetter + 'min'] = min;
    container[cLetter + 'max'] = max;

    inputContainer[cLetter + 'min'] = min;
    inputContainer[cLetter + 'max'] = max;

    if(container.autocolorscale) {
        if(min * max < 0) scl = scales.RdBu;
        else if(min >= 0) scl = scales.Reds;
        else scl = scales.Blues;

        // reversescale is handled at the containerOut level
        inputContainer.colorscale = scl;
        if(container.reversescale) scl = flipScale(scl);
        container.colorscale = scl;
    }
};

},{"../../lib":610,"./flip_scale":521,"./scales":528}],517:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorScaleAttributes = require('./attributes');
var extendDeep = require('../../lib/extend').extendDeep;
var palettes = require('./scales.js');

module.exports = function makeColorScaleAttributes(context) {
    return {
        color: {
            valType: 'color',
            arrayOk: true,
            role: 'style',
            description: [
                'Sets the ', context, ' color. It accepts either a specific color',
                ' or an array of numbers that are mapped to the colorscale',
                ' relative to the max and min values of the array or relative to',
                ' `cmin` and `cmax` if set.'
            ].join('')
        },
        colorscale: extendDeep({}, colorScaleAttributes.colorscale, {
            description: [
                'Sets the colorscale and only has an effect',
                ' if `', context, '.color` is set to a numerical array.',
                ' The colorscale must be an array containing',
                ' arrays mapping a normalized value to an',
                ' rgb, rgba, hex, hsl, hsv, or named color string.',
                ' At minimum, a mapping for the lowest (0) and highest (1)',
                ' values are required. For example,',
                ' `[[0, \'rgb(0,0,255)\', [1, \'rgb(255,0,0)\']]`.',
                ' To control the bounds of the colorscale in color space,',
                ' use `', context, '.cmin` and `', context, '.cmax`.',
                ' Alternatively, `colorscale` may be a palette name string',
                ' of the following list: '
            ].join('').concat(Object.keys(palettes).join(', '))
        }),
        cauto: extendDeep({}, colorScaleAttributes.zauto, {
            description: [
                'Has an effect only if `', context, '.color` is set to a numerical array',
                ' and `cmin`, `cmax` are set by the user. In this case,',
                ' it controls whether the range of colors in `colorscale` is mapped to',
                ' the range of values in the `color` array (`cauto: true`), or the `cmin`/`cmax`',
                ' values (`cauto: false`).',
                ' Defaults to `false` when `cmin`, `cmax` are set by the user.'
            ].join('')
        }),
        cmax: extendDeep({}, colorScaleAttributes.zmax, {
            description: [
                'Has an effect only if `', context, '.color` is set to a numerical array.',
                ' Sets the upper bound of the color domain.',
                ' Value should be associated to the `', context, '.color` array index,',
                ' and if set, `', context, '.cmin` must be set as well.'
            ].join('')
        }),
        cmin: extendDeep({}, colorScaleAttributes.zmin, {
            description: [
                'Has an effect only if `', context, '.color` is set to a numerical array.',
                ' Sets the lower bound of the color domain.',
                ' Value should be associated to the `', context, '.color` array index,',
                ' and if set, `', context, '.cmax` must be set as well.'
            ].join('')
        }),
        autocolorscale: extendDeep({}, colorScaleAttributes.autocolorscale, {
            description: [
                'Has an effect only if `', context, '.color` is set to a numerical array.',
                ' Determines whether the colorscale is a default palette (`autocolorscale: true`)',
                ' or the palette determined by `', context, '.colorscale`.',
                ' In case `colorscale` is unspecified or `autocolorscale` is true, the default ',
                ' palette will be chosen according to whether numbers in the `color` array are',
                ' all positive, all negative or mixed.'
            ].join('')
        }),
        reversescale: extendDeep({}, colorScaleAttributes.reversescale, {
            description: [
                'Has an effect only if `', context, '.color` is set to a numerical array.',
                ' Reverses the color mapping if true (`cmin` will correspond to the last color',
                ' in the array and `cmax` will correspond to the first color).'
            ].join('')
        })
    };
};

},{"../../lib/extend":603,"./attributes":515,"./scales.js":528}],518:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scales = require('./scales');


module.exports = scales.RdBu;

},{"./scales":528}],519:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');

var hasColorbar = require('../colorbar/has_colorbar');
var colorbarDefaults = require('../colorbar/defaults');
var isValidScale = require('./is_valid_scale');
var flipScale = require('./flip_scale');


module.exports = function colorScaleDefaults(traceIn, traceOut, layout, coerce, opts) {
    var prefix = opts.prefix,
        cLetter = opts.cLetter,
        containerStr = prefix.slice(0, prefix.length - 1),
        containerIn = prefix ?
            Lib.nestedProperty(traceIn, containerStr).get() || {} :
            traceIn,
        containerOut = prefix ?
            Lib.nestedProperty(traceOut, containerStr).get() || {} :
            traceOut,
        minIn = containerIn[cLetter + 'min'],
        maxIn = containerIn[cLetter + 'max'],
        sclIn = containerIn.colorscale;

    var validMinMax = isNumeric(minIn) && isNumeric(maxIn) && (minIn < maxIn);
    coerce(prefix + cLetter + 'auto', !validMinMax);
    coerce(prefix + cLetter + 'min');
    coerce(prefix + cLetter + 'max');

    // handles both the trace case (autocolorscale is false by default) and
    // the marker and marker.line case (autocolorscale is true by default)
    var autoColorscaleDftl;
    if(sclIn !== undefined) autoColorscaleDftl = !isValidScale(sclIn);
    coerce(prefix + 'autocolorscale', autoColorscaleDftl);
    var sclOut = coerce(prefix + 'colorscale');

    // reversescale is handled at the containerOut level
    var reverseScale = coerce(prefix + 'reversescale');
    if(reverseScale) containerOut.colorscale = flipScale(sclOut);

    // ... until Scatter.colorbar can handle marker line colorbars
    if(prefix === 'marker.line.') return;

    // handle both the trace case where the dflt is listed in attributes and
    // the marker case where the dflt is determined by hasColorbar
    var showScaleDftl;
    if(prefix) showScaleDftl = hasColorbar(containerIn);
    var showScale = coerce(prefix + 'showscale', showScaleDftl);

    if(showScale) colorbarDefaults(containerIn, containerOut, layout);
};

},{"../../lib":610,"../colorbar/defaults":512,"../colorbar/has_colorbar":514,"./flip_scale":521,"./is_valid_scale":525,"fast-isnumeric":97}],520:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/**
 * Extract colorscale into numeric domain and color range.
 *
 * @param {array} scl colorscale array of arrays
 * @param {number} cmin minimum color value (used to clamp scale)
 * @param {number} cmax maximum color value (used to clamp scale)
 */
module.exports = function extractScale(scl, cmin, cmax) {
    var N = scl.length,
        domain = new Array(N),
        range = new Array(N);

    for(var i = 0; i < N; i++) {
        var si = scl[i];

        domain[i] = cmin + si[0] * (cmax - cmin);
        range[i] = si[1];
    }

    return {
        domain: domain,
        range: range
    };
};

},{}],521:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = function flipScale(scl) {
    var N = scl.length,
        sclNew = new Array(N),
        si;

    for(var i = N - 1, j = 0; i >= 0; i--, j++) {
        si = scl[i];
        sclNew[j] = [1 - si[0], si[1]];
    }

    return sclNew;
};

},{}],522:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scales = require('./scales');
var defaultScale = require('./default_scale');
var isValidScaleArray = require('./is_valid_scale_array');


module.exports = function getScale(scl, dflt) {
    if(!dflt) dflt = defaultScale;
    if(!scl) return dflt;

    function parseScale() {
        try {
            scl = scales[scl] || JSON.parse(scl);
        }
        catch(e) {
            scl = dflt;
        }
    }

    if(typeof scl === 'string') {
        parseScale();
        // occasionally scl is double-JSON encoded...
        if(typeof scl === 'string') parseScale();
    }

    if(!isValidScaleArray(scl)) return dflt;
    return scl;
};

},{"./default_scale":518,"./is_valid_scale_array":526,"./scales":528}],523:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');

var isValidScale = require('./is_valid_scale');


module.exports = function hasColorscale(trace, containerStr) {
    var container = containerStr ?
            Lib.nestedProperty(trace, containerStr).get() || {} :
            trace,
        color = container.color,
        isArrayWithOneNumber = false;

    if(Array.isArray(color)) {
        for(var i = 0; i < color.length; i++) {
            if(isNumeric(color[i])) {
                isArrayWithOneNumber = true;
                break;
            }
        }
    }

    return (
        Lib.isPlainObject(container) && (
            isArrayWithOneNumber ||
            container.showscale === true ||
            (isNumeric(container.cmin) && isNumeric(container.cmax)) ||
            isValidScale(container.colorscale) ||
            Lib.isPlainObject(container.colorbar)
        )
    );
};

},{"../../lib":610,"./is_valid_scale":525,"fast-isnumeric":97}],524:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.scales = require('./scales');

exports.defaultScale = require('./default_scale');

exports.attributes = require('./attributes');

exports.handleDefaults = require('./defaults');

exports.calc = require('./calc');

exports.hasColorscale = require('./has_colorscale');

exports.isValidScale = require('./is_valid_scale');

exports.getScale = require('./get_scale');

exports.flipScale = require('./flip_scale');

exports.extractScale = require('./extract_scale');

exports.makeColorScaleFunc = require('./make_color_scale_func');

},{"./attributes":515,"./calc":516,"./default_scale":518,"./defaults":519,"./extract_scale":520,"./flip_scale":521,"./get_scale":522,"./has_colorscale":523,"./is_valid_scale":525,"./make_color_scale_func":527,"./scales":528}],525:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scales = require('./scales');
var isValidScaleArray = require('./is_valid_scale_array');


module.exports = function isValidScale(scl) {
    if(scales[scl] !== undefined) return true;
    else return isValidScaleArray(scl);
};

},{"./is_valid_scale_array":526,"./scales":528}],526:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');


module.exports = function isValidScaleArray(scl) {
    var highestVal = 0;

    if(!Array.isArray(scl) || scl.length < 2) return false;

    if(!scl[0] || !scl[scl.length - 1]) return false;

    if(+scl[0][0] !== 0 || +scl[scl.length - 1][0] !== 1) return false;

    for(var i = 0; i < scl.length; i++) {
        var si = scl[i];

        if(si.length !== 2 || +si[0] < highestVal || !tinycolor(si[1]).isValid()) {
            return false;
        }

        highestVal = +si[0];
    }

    return true;
};

},{"tinycolor2":985}],527:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');
var isNumeric = require('fast-isnumeric');

var Color = require('../color');

/**
 * General colorscale function generator.
 *
 * @param {object} specs output of Colorscale.extractScale or precomputed domain, range.
 *  - domain {array}
 *  - range {array}
 *
 * @param {object} opts
 *  - noNumericCheck {boolean} if true, scale func bypasses numeric checks
 *  - returnArray {boolean} if true, scale func return 4-item array instead of color strings
 *
 * @return {function}
 */
module.exports = function makeColorScaleFunc(specs, opts) {
    opts = opts || {};

    var domain = specs.domain,
        range = specs.range,
        N = range.length,
        _range = new Array(N);

    for(var i = 0; i < N; i++) {
        var rgba = tinycolor(range[i]).toRgb();
        _range[i] = [rgba.r, rgba.g, rgba.b, rgba.a];
    }

    var _sclFunc = d3.scale.linear()
        .domain(domain)
        .range(_range)
        .clamp(true);

    var noNumericCheck = opts.noNumericCheck,
        returnArray = opts.returnArray,
        sclFunc;

    if(noNumericCheck && returnArray) {
        sclFunc = _sclFunc;
    }
    else if(noNumericCheck) {
        sclFunc = function(v) {
            return colorArray2rbga(_sclFunc(v));
        };
    }
    else if(returnArray) {
        sclFunc = function(v) {
            if(isNumeric(v)) return _sclFunc(v);
            else if(tinycolor(v).isValid()) return v;
            else return Color.defaultLine;
        };
    }
    else {
        sclFunc = function(v) {
            if(isNumeric(v)) return colorArray2rbga(_sclFunc(v));
            else if(tinycolor(v).isValid()) return v;
            else return Color.defaultLine;
        };
    }

    // colorbar draw looks into the d3 scale closure for domain and range

    sclFunc.domain = _sclFunc.domain;

    sclFunc.range = function() { return range; };

    return sclFunc;
};

function colorArray2rbga(colorArray) {
    var colorObj = {
        r: colorArray[0],
        g: colorArray[1],
        b: colorArray[2],
        a: colorArray[3]
    };

    return tinycolor(colorObj).toRgbString();
}

},{"../color":510,"d3":86,"fast-isnumeric":97,"tinycolor2":985}],528:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    'Greys': [
        [0, 'rgb(0,0,0)'], [1, 'rgb(255,255,255)']
    ],

    'YlGnBu': [
        [0, 'rgb(8,29,88)'], [0.125, 'rgb(37,52,148)'],
        [0.25, 'rgb(34,94,168)'], [0.375, 'rgb(29,145,192)'],
        [0.5, 'rgb(65,182,196)'], [0.625, 'rgb(127,205,187)'],
        [0.75, 'rgb(199,233,180)'], [0.875, 'rgb(237,248,217)'],
        [1, 'rgb(255,255,217)']
    ],

    'Greens': [
        [0, 'rgb(0,68,27)'], [0.125, 'rgb(0,109,44)'],
        [0.25, 'rgb(35,139,69)'], [0.375, 'rgb(65,171,93)'],
        [0.5, 'rgb(116,196,118)'], [0.625, 'rgb(161,217,155)'],
        [0.75, 'rgb(199,233,192)'], [0.875, 'rgb(229,245,224)'],
        [1, 'rgb(247,252,245)']
    ],

    'YlOrRd': [
        [0, 'rgb(128,0,38)'], [0.125, 'rgb(189,0,38)'],
        [0.25, 'rgb(227,26,28)'], [0.375, 'rgb(252,78,42)'],
        [0.5, 'rgb(253,141,60)'], [0.625, 'rgb(254,178,76)'],
        [0.75, 'rgb(254,217,118)'], [0.875, 'rgb(255,237,160)'],
        [1, 'rgb(255,255,204)']
    ],

    'Bluered': [
        [0, 'rgb(0,0,255)'], [1, 'rgb(255,0,0)']
    ],

    // modified RdBu based on
    // www.sandia.gov/~kmorel/documents/ColorMaps/ColorMapsExpanded.pdf
    'RdBu': [
        [0, 'rgb(5,10,172)'], [0.35, 'rgb(106,137,247)'],
        [0.5, 'rgb(190,190,190)'], [0.6, 'rgb(220,170,132)'],
        [0.7, 'rgb(230,145,90)'], [1, 'rgb(178,10,28)']
    ],

    // Scale for non-negative numeric values
    'Reds': [
        [0, 'rgb(220,220,220)'], [0.2, 'rgb(245,195,157)'],
        [0.4, 'rgb(245,160,105)'], [1, 'rgb(178,10,28)']
    ],

    // Scale for non-positive numeric values
    'Blues': [
        [0, 'rgb(5,10,172)'], [0.35, 'rgb(40,60,190)'],
        [0.5, 'rgb(70,100,245)'], [0.6, 'rgb(90,120,245)'],
        [0.7, 'rgb(106,137,247)'], [1, 'rgb(220,220,220)']
    ],

    'Picnic': [
        [0, 'rgb(0,0,255)'], [0.1, 'rgb(51,153,255)'],
        [0.2, 'rgb(102,204,255)'], [0.3, 'rgb(153,204,255)'],
        [0.4, 'rgb(204,204,255)'], [0.5, 'rgb(255,255,255)'],
        [0.6, 'rgb(255,204,255)'], [0.7, 'rgb(255,153,255)'],
        [0.8, 'rgb(255,102,204)'], [0.9, 'rgb(255,102,102)'],
        [1, 'rgb(255,0,0)']
    ],

    'Rainbow': [
        [0, 'rgb(150,0,90)'], [0.125, 'rgb(0,0,200)'],
        [0.25, 'rgb(0,25,255)'], [0.375, 'rgb(0,152,255)'],
        [0.5, 'rgb(44,255,150)'], [0.625, 'rgb(151,255,0)'],
        [0.75, 'rgb(255,234,0)'], [0.875, 'rgb(255,111,0)'],
        [1, 'rgb(255,0,0)']
    ],

    'Portland': [
        [0, 'rgb(12,51,131)'], [0.25, 'rgb(10,136,186)'],
        [0.5, 'rgb(242,211,56)'], [0.75, 'rgb(242,143,56)'],
        [1, 'rgb(217,30,30)']
    ],

    'Jet': [
        [0, 'rgb(0,0,131)'], [0.125, 'rgb(0,60,170)'],
        [0.375, 'rgb(5,255,255)'], [0.625, 'rgb(255,255,0)'],
        [0.875, 'rgb(250,0,0)'], [1, 'rgb(128,0,0)']
    ],

    'Hot': [
        [0, 'rgb(0,0,0)'], [0.3, 'rgb(230,0,0)'],
        [0.6, 'rgb(255,210,0)'], [1, 'rgb(255,255,255)']
    ],

    'Blackbody': [
        [0, 'rgb(0,0,0)'], [0.2, 'rgb(230,0,0)'],
        [0.4, 'rgb(230,210,0)'], [0.7, 'rgb(255,255,255)'],
        [1, 'rgb(160,200,255)']
    ],

    'Earth': [
        [0, 'rgb(0,0,130)'], [0.1, 'rgb(0,180,180)'],
        [0.2, 'rgb(40,210,40)'], [0.4, 'rgb(230,230,50)'],
        [0.6, 'rgb(120,70,20)'], [1, 'rgb(255,255,255)']
    ],

    'Electric': [
        [0, 'rgb(0,0,0)'], [0.15, 'rgb(30,0,100)'],
        [0.4, 'rgb(120,0,100)'], [0.6, 'rgb(160,90,0)'],
        [0.8, 'rgb(230,200,0)'], [1, 'rgb(255,250,220)']
    ],

    'Viridis': [
        [0, '#440154'], [0.06274509803921569, '#48186a'],
        [0.12549019607843137, '#472d7b'], [0.18823529411764706, '#424086'],
        [0.25098039215686274, '#3b528b'], [0.3137254901960784, '#33638d'],
        [0.3764705882352941, '#2c728e'], [0.4392156862745098, '#26828e'],
        [0.5019607843137255, '#21918c'], [0.5647058823529412, '#1fa088'],
        [0.6274509803921569, '#28ae80'], [0.6901960784313725, '#3fbc73'],
        [0.7529411764705882, '#5ec962'], [0.8156862745098039, '#84d44b'],
        [0.8784313725490196, '#addc30'], [0.9411764705882353, '#d8e219'],
        [1, '#fde725']
    ]
};

},{}],529:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


// for automatic alignment on dragging, <1/3 means left align,
// >2/3 means right, and between is center. Pick the right fraction
// based on where you are, and return the fraction corresponding to
// that position on the object
module.exports = function align(v, dv, v0, v1, anchor) {
    var vmin = (v - v0) / (v1 - v0),
        vmax = vmin + dv / (v1 - v0),
        vc = (vmin + vmax) / 2;

    // explicitly specified anchor
    if(anchor === 'left' || anchor === 'bottom') return vmin;
    if(anchor === 'center' || anchor === 'middle') return vc;
    if(anchor === 'right' || anchor === 'top') return vmax;

    // automatic based on position
    if(vmin < (2 / 3) - vc) return vmin;
    if(vmax > (4 / 3) - vc) return vmax;
    return vc;
};

},{}],530:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


// set cursors pointing toward the closest corner/side,
// to indicate alignment
// x and y are 0-1, fractions of the plot area
var cursorset = [
    ['sw-resize', 's-resize', 'se-resize'],
    ['w-resize', 'move', 'e-resize'],
    ['nw-resize', 'n-resize', 'ne-resize']
];

module.exports = function getCursor(x, y, xanchor, yanchor) {
    if(xanchor === 'left') x = 0;
    else if(xanchor === 'center') x = 1;
    else if(xanchor === 'right') x = 2;
    else x = Lib.constrain(Math.floor(x * 3), 0, 2);

    if(yanchor === 'bottom') y = 0;
    else if(yanchor === 'middle') y = 1;
    else if(yanchor === 'top') y = 2;
    else y = Lib.constrain(Math.floor(y * 3), 0, 2);

    return cursorset[y][x];
};

},{"../../lib":610}],531:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../../plotly');
var Lib = require('../../lib');

var constants = require('../../plots/cartesian/constants');


var dragElement = module.exports = {};

dragElement.align = require('./align');
dragElement.getCursor = require('./cursor');

var unhover = require('./unhover');
dragElement.unhover = unhover.wrapped;
dragElement.unhoverRaw = unhover.raw;

/**
 * Abstracts click & drag interactions
 * @param {object} options with keys:
 *      element (required) the DOM element to drag
 *      prepFn (optional) function(event, startX, startY)
 *          executed on mousedown
 *          startX and startY are the clientX and clientY pixel position
 *          of the mousedown event
 *      moveFn (optional) function(dx, dy, dragged)
 *          executed on move
 *          dx and dy are the net pixel offset of the drag,
 *          dragged is true/false, has the mouse moved enough to
 *          constitute a drag
 *      doneFn (optional) function(dragged, numClicks)
 *          executed on mouseup, or mouseout of window since
 *          we don't get events after that
 *          dragged is as in moveFn
 *          numClicks is how many clicks we've registered within
 *          a doubleclick time
 *      setCursor (optional) function(event)
 *          executed on mousemove before mousedown
 *          the purpose of this callback is to update the mouse cursor before
 *          the click & drag interaction has been initiated
 */
dragElement.init = function init(options) {
    var gd = Lib.getPlotDiv(options.element) || {},
        numClicks = 1,
        DBLCLICKDELAY = constants.DBLCLICKDELAY,
        startX,
        startY,
        newMouseDownTime,
        dragCover,
        initialTarget,
        initialOnMouseMove;

    if(!gd._mouseDownTime) gd._mouseDownTime = 0;

    function onStart(e) {
        // disable call to options.setCursor(evt)
        options.element.onmousemove = initialOnMouseMove;

        // make dragging and dragged into properties of gd
        // so that others can look at and modify them
        gd._dragged = false;
        gd._dragging = true;
        startX = e.clientX;
        startY = e.clientY;
        initialTarget = e.target;

        newMouseDownTime = (new Date()).getTime();
        if(newMouseDownTime - gd._mouseDownTime < DBLCLICKDELAY) {
            // in a click train
            numClicks += 1;
        }
        else {
            // new click train
            numClicks = 1;
            gd._mouseDownTime = newMouseDownTime;
        }

        if(options.prepFn) options.prepFn(e, startX, startY);

        dragCover = coverSlip();

        dragCover.onmousemove = onMove;
        dragCover.onmouseup = onDone;
        dragCover.onmouseout = onDone;

        dragCover.style.cursor = window.getComputedStyle(options.element).cursor;

        return Lib.pauseEvent(e);
    }

    function onMove(e) {
        var dx = e.clientX - startX,
            dy = e.clientY - startY,
            minDrag = options.minDrag || constants.MINDRAG;

        if(Math.abs(dx) < minDrag) dx = 0;
        if(Math.abs(dy) < minDrag) dy = 0;
        if(dx || dy) {
            gd._dragged = true;
            dragElement.unhover(gd);
        }

        if(options.moveFn) options.moveFn(dx, dy, gd._dragged);

        return Lib.pauseEvent(e);
    }

    function onDone(e) {
        // re-enable call to options.setCursor(evt)
        initialOnMouseMove = options.element.onmousemove;
        if(options.setCursor) options.element.onmousemove = options.setCursor;

        dragCover.onmousemove = null;
        dragCover.onmouseup = null;
        dragCover.onmouseout = null;
        Lib.removeElement(dragCover);

        if(!gd._dragging) {
            gd._dragged = false;
            return;
        }
        gd._dragging = false;

        // don't count as a dblClick unless the mouseUp is also within
        // the dblclick delay
        if((new Date()).getTime() - gd._mouseDownTime > DBLCLICKDELAY) {
            numClicks = Math.max(numClicks - 1, 1);
        }

        if(options.doneFn) options.doneFn(gd._dragged, numClicks);

        if(!gd._dragged) {
            var e2 = document.createEvent('MouseEvents');
            e2.initEvent('click', true, true);
            initialTarget.dispatchEvent(e2);
        }

        finishDrag(gd);

        gd._dragged = false;

        return Lib.pauseEvent(e);
    }

    // enable call to options.setCursor(evt)
    initialOnMouseMove = options.element.onmousemove;
    if(options.setCursor) options.element.onmousemove = options.setCursor;

    options.element.onmousedown = onStart;
    options.element.style.pointerEvents = 'all';
};

function coverSlip() {
    var cover = document.createElement('div');

    cover.className = 'dragcover';
    var cStyle = cover.style;
    cStyle.position = 'fixed';
    cStyle.left = 0;
    cStyle.right = 0;
    cStyle.top = 0;
    cStyle.bottom = 0;
    cStyle.zIndex = 999999999;
    cStyle.background = 'none';

    document.body.appendChild(cover);

    return cover;
}

dragElement.coverSlip = coverSlip;

function finishDrag(gd) {
    gd._dragging = false;
    if(gd._replotPending) Plotly.plot(gd);
}

},{"../../lib":610,"../../plotly":637,"../../plots/cartesian/constants":647,"./align":529,"./cursor":530,"./unhover":532}],532:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


var Events = require('../../lib/events');


var unhover = module.exports = {};


unhover.wrapped = function(gd, evt, subplot) {
    if(typeof gd === 'string') gd = document.getElementById(gd);

    // Important, clear any queued hovers
    if(gd._hoverTimer) {
        clearTimeout(gd._hoverTimer);
        gd._hoverTimer = undefined;
    }

    unhover.raw(gd, evt, subplot);
};


// remove hover effects on mouse out, and emit unhover event
unhover.raw = function unhoverRaw(gd, evt) {
    var fullLayout = gd._fullLayout;

    if(!evt) evt = {};
    if(evt.target &&
       Events.triggerHandler(gd, 'plotly_beforehover', evt) === false) {
        return;
    }

    fullLayout._hoverlayer.selectAll('g').remove();

    if(evt.target && gd._hoverdata) {
        gd.emit('plotly_unhover', {points: gd._hoverdata});
    }

    gd._hoverdata = undefined;
};

},{"../../lib/events":602}],533:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Color = require('../color');
var Colorscale = require('../colorscale');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');

var xmlnsNamespaces = require('../../constants/xmlns_namespaces');
var subTypes = require('../../traces/scatter/subtypes');
var makeBubbleSizeFn = require('../../traces/scatter/make_bubble_size_func');

var drawing = module.exports = {};

// -----------------------------------------------------
// styling functions for plot elements
// -----------------------------------------------------

drawing.font = function(s, family, size, color) {
    // also allow the form font(s, {family, size, color})
    if(family && family.family) {
        color = family.color;
        size = family.size;
        family = family.family;
    }
    if(family) s.style('font-family', family);
    if(size + 1) s.style('font-size', size + 'px');
    if(color) s.call(Color.fill, color);
};

drawing.setPosition = function(s, x, y) { s.attr('x', x).attr('y', y); };
drawing.setSize = function(s, w, h) { s.attr('width', w).attr('height', h); };
drawing.setRect = function(s, x, y, w, h) {
    s.call(drawing.setPosition, x, y).call(drawing.setSize, w, h);
};

drawing.translatePoint = function(d, sel, xa, ya) {
    // put xp and yp into d if pixel scaling is already done
    var x = d.xp || xa.c2p(d.x),
        y = d.yp || ya.c2p(d.y);

    if(isNumeric(x) && isNumeric(y)) {
        // for multiline text this works better
        if(sel.node().nodeName === 'text') {
            sel.attr('x', x).attr('y', y);
        } else {
            sel.attr('transform', 'translate(' + x + ',' + y + ')');
        }
    }
    else sel.remove();
};

drawing.translatePoints = function(s, xa, ya, trace) {
    s.each(function(d) {
        var sel = d3.select(this);
        drawing.translatePoint(d, sel, xa, ya, trace);
    });
};

drawing.getPx = function(s, styleAttr) {
    // helper to pull out a px value from a style that may contain px units
    // s is a d3 selection (will pull from the first one)
    return Number(s.style(styleAttr).replace(/px$/, ''));
};

drawing.crispRound = function(gd, lineWidth, dflt) {
    // for lines that disable antialiasing we want to
    // make sure the width is an integer, and at least 1 if it's nonzero

    if(!lineWidth || !isNumeric(lineWidth)) return dflt || 0;

    // but not for static plots - these don't get antialiased anyway.
    if(gd._context.staticPlot) return lineWidth;

    if(lineWidth < 1) return 1;
    return Math.round(lineWidth);
};

drawing.singleLineStyle = function(d, s, lw, lc, ld) {
    s.style('fill', 'none');
    var line = (((d || [])[0] || {}).trace || {}).line || {},
        lw1 = lw || line.width||0,
        dash = ld || line.dash || '';

    Color.stroke(s, lc || line.color);
    drawing.dashLine(s, dash, lw1);
};

drawing.lineGroupStyle = function(s, lw, lc, ld) {
    s.style('fill', 'none')
    .each(function(d) {
        var line = (((d || [])[0] || {}).trace || {}).line || {},
            lw1 = lw || line.width||0,
            dash = ld || line.dash || '';

        d3.select(this)
            .call(Color.stroke, lc || line.color)
            .call(drawing.dashLine, dash, lw1);
    });
};

drawing.dashLine = function(s, dash, lineWidth) {
    var dlw = Math.max(lineWidth, 3);

    if(dash === 'solid') dash = '';
    else if(dash === 'dot') dash = dlw + 'px,' + dlw + 'px';
    else if(dash === 'dash') dash = (3 * dlw) + 'px,' + (3 * dlw) + 'px';
    else if(dash === 'longdash') dash = (5 * dlw) + 'px,' + (5 * dlw) + 'px';
    else if(dash === 'dashdot') {
        dash = (3 * dlw) + 'px,' + dlw + 'px,' + dlw + 'px,' + dlw + 'px';
    }
    else if(dash === 'longdashdot') {
        dash = (5 * dlw) + 'px,' + (2 * dlw) + 'px,' + dlw + 'px,' + (2 * dlw) + 'px';
    }
    // otherwise user wrote the dasharray themselves - leave it be

    s.style({
        'stroke-dasharray': dash,
        'stroke-width': lineWidth + 'px'
    });
};

drawing.fillGroupStyle = function(s) {
    s.style('stroke-width', 0)
    .each(function(d) {
        var shape = d3.select(this);
        try {
            shape.call(Color.fill, d[0].trace.fillcolor);
        }
        catch(e) {
            Lib.error(e, s);
            shape.remove();
        }
    });
};

var SYMBOLDEFS = require('./symbol_defs');

drawing.symbolNames = [];
drawing.symbolFuncs = [];
drawing.symbolNeedLines = {};
drawing.symbolNoDot = {};
drawing.symbolList = [];

Object.keys(SYMBOLDEFS).forEach(function(k) {
    var symDef = SYMBOLDEFS[k];
    drawing.symbolList = drawing.symbolList.concat(
        [symDef.n, k, symDef.n + 100, k + '-open']);
    drawing.symbolNames[symDef.n] = k;
    drawing.symbolFuncs[symDef.n] = symDef.f;
    if(symDef.needLine) {
        drawing.symbolNeedLines[symDef.n] = true;
    }
    if(symDef.noDot) {
        drawing.symbolNoDot[symDef.n] = true;
    }
    else {
        drawing.symbolList = drawing.symbolList.concat(
            [symDef.n + 200, k + '-dot', symDef.n + 300, k + '-open-dot']);
    }
});
var MAXSYMBOL = drawing.symbolNames.length,
    // add a dot in the middle of the symbol
    DOTPATH = 'M0,0.5L0.5,0L0,-0.5L-0.5,0Z';

drawing.symbolNumber = function(v) {
    if(typeof v === 'string') {
        var vbase = 0;
        if(v.indexOf('-open') > 0) {
            vbase = 100;
            v = v.replace('-open', '');
        }
        if(v.indexOf('-dot') > 0) {
            vbase += 200;
            v = v.replace('-dot', '');
        }
        v = drawing.symbolNames.indexOf(v);
        if(v >= 0) { v += vbase; }
    }
    if((v % 100 >= MAXSYMBOL) || v >= 400) { return 0; }
    return Math.floor(Math.max(v, 0));
};

function singlePointStyle(d, sel, trace, markerScale, lineScale, marker, markerLine) {
    // only scatter & box plots get marker path and opacity
    // bars, histograms don't
    if(Registry.traceIs(trace, 'symbols')) {
        var sizeFn = makeBubbleSizeFn(trace);

        sel.attr('d', function(d) {
            var r;

            // handle multi-trace graph edit case
            if(d.ms === 'various' || marker.size === 'various') r = 3;
            else {
                r = subTypes.isBubble(trace) ?
                        sizeFn(d.ms) : (marker.size || 6) / 2;
            }

            // store the calculated size so hover can use it
            d.mrc = r;

            // turn the symbol into a sanitized number
            var x = drawing.symbolNumber(d.mx || marker.symbol) || 0,
                xBase = x % 100;

            // save if this marker is open
            // because that impacts how to handle colors
            d.om = x % 200 >= 100;

            return drawing.symbolFuncs[xBase](r) +
                (x >= 200 ? DOTPATH : '');
        })
        .style('opacity', function(d) {
            return (d.mo + 1 || marker.opacity + 1) - 1;
        });
    }

    // 'so' is suspected outliers, for box plots
    var fillColor,
        lineColor,
        lineWidth;
    if(d.so) {
        lineWidth = markerLine.outlierwidth;
        lineColor = markerLine.outliercolor;
        fillColor = marker.outliercolor;
    }
    else {
        lineWidth = (d.mlw + 1 || markerLine.width + 1 ||
            // TODO: we need the latter for legends... can we get rid of it?
            (d.trace ? d.trace.marker.line.width : 0) + 1) - 1;

        if('mlc' in d) lineColor = d.mlcc = lineScale(d.mlc);
        // weird case: array wasn't long enough to apply to every point
        else if(Array.isArray(markerLine.color)) lineColor = Color.defaultLine;
        else lineColor = markerLine.color;

        if('mc' in d) fillColor = d.mcc = markerScale(d.mc);
        else if(Array.isArray(marker.color)) fillColor = Color.defaultLine;
        else fillColor = marker.color || 'rgba(0,0,0,0)';
    }

    if(d.om) {
        // open markers can't have zero linewidth, default to 1px,
        // and use fill color as stroke color
        sel.call(Color.stroke, fillColor)
            .style({
                'stroke-width': (lineWidth || 1) + 'px',
                fill: 'none'
            });
    }
    else {
        sel.style('stroke-width', lineWidth + 'px')
            .call(Color.fill, fillColor);
        if(lineWidth) {
            sel.call(Color.stroke, lineColor);
        }
    }
}

drawing.singlePointStyle = function(d, sel, trace) {
    var marker = trace.marker,
        markerLine = marker.line;

    // allow array marker and marker line colors to be
    // scaled by given max and min to colorscales
    var markerScale = drawing.tryColorscale(marker, ''),
        lineScale = drawing.tryColorscale(marker, 'line');

    singlePointStyle(d, sel, trace, markerScale, lineScale, marker, markerLine);

};

drawing.pointStyle = function(s, trace) {
    if(!s.size()) return;

    // allow array marker and marker line colors to be
    // scaled by given max and min to colorscales
    var marker = trace.marker;
    var markerScale = drawing.tryColorscale(marker, ''),
        lineScale = drawing.tryColorscale(marker, 'line');

    s.each(function(d) {
        drawing.singlePointStyle(d, d3.select(this), trace, markerScale, lineScale);
    });
};

drawing.tryColorscale = function(marker, prefix) {
    var cont = prefix ? Lib.nestedProperty(marker, prefix).get() : marker,
        scl = cont.colorscale,
        colorArray = cont.color;

    if(scl && Array.isArray(colorArray)) {
        return Colorscale.makeColorScaleFunc(
            Colorscale.extractScale(scl, cont.cmin, cont.cmax)
        );
    }
    else return Lib.identity;
};

// draw text at points
var TEXTOFFSETSIGN = {start: 1, end: -1, middle: 0, bottom: 1, top: -1},
    LINEEXPAND = 1.3;
drawing.textPointStyle = function(s, trace) {
    s.each(function(d) {
        var p = d3.select(this),
            text = d.tx || trace.text;

        if(!text || Array.isArray(text)) {
            // isArray test handles the case of (intentionally) missing
            // or empty text within a text array
            p.remove();
            return;
        }

        var pos = d.tp || trace.textposition,
            v = pos.indexOf('top') !== -1 ? 'top' :
                pos.indexOf('bottom') !== -1 ? 'bottom' : 'middle',
            h = pos.indexOf('left') !== -1 ? 'end' :
                pos.indexOf('right') !== -1 ? 'start' : 'middle',
            fontSize = d.ts || trace.textfont.size,
            // if markers are shown, offset a little more than
            // the nominal marker size
            // ie 2/1.6 * nominal, bcs some markers are a bit bigger
            r = d.mrc ? (d.mrc / 0.8 + 1) : 0;

        fontSize = (isNumeric(fontSize) && fontSize > 0) ? fontSize : 0;

        p.call(drawing.font,
                d.tf || trace.textfont.family,
                fontSize,
                d.tc || trace.textfont.color)
            .attr('text-anchor', h)
            .text(text)
            .call(svgTextUtils.convertToTspans);
        var pgroup = d3.select(this.parentNode),
            tspans = p.selectAll('tspan.line'),
            numLines = ((tspans[0].length || 1) - 1) * LINEEXPAND + 1,
            dx = TEXTOFFSETSIGN[h] * r,
            dy = fontSize * 0.75 + TEXTOFFSETSIGN[v] * r +
                (TEXTOFFSETSIGN[v] - 1) * numLines * fontSize / 2;

        // fix the overall text group position
        pgroup.attr('transform', 'translate(' + dx + ',' + dy + ')');

        // then fix multiline text
        if(numLines > 1) {
            tspans.attr({ x: p.attr('x'), y: p.attr('y') });
        }
    });
};

// generalized Catmull-Rom splines, per
// http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
var CatmullRomExp = 0.5;
drawing.smoothopen = function(pts, smoothness) {
    if(pts.length < 3) { return 'M' + pts.join('L');}
    var path = 'M' + pts[0],
        tangents = [], i;
    for(i = 1; i < pts.length - 1; i++) {
        tangents.push(makeTangent(pts[i - 1], pts[i], pts[i + 1], smoothness));
    }
    path += 'Q' + tangents[0][0] + ' ' + pts[1];
    for(i = 2; i < pts.length - 1; i++) {
        path += 'C' + tangents[i - 2][1] + ' ' + tangents[i - 1][0] + ' ' + pts[i];
    }
    path += 'Q' + tangents[pts.length - 3][1] + ' ' + pts[pts.length - 1];
    return path;
};

drawing.smoothclosed = function(pts, smoothness) {
    if(pts.length < 3) { return 'M' + pts.join('L') + 'Z'; }
    var path = 'M' + pts[0],
        pLast = pts.length - 1,
        tangents = [makeTangent(pts[pLast],
                        pts[0], pts[1], smoothness)],
        i;
    for(i = 1; i < pLast; i++) {
        tangents.push(makeTangent(pts[i - 1], pts[i], pts[i + 1], smoothness));
    }
    tangents.push(
        makeTangent(pts[pLast - 1], pts[pLast], pts[0], smoothness)
    );

    for(i = 1; i <= pLast; i++) {
        path += 'C' + tangents[i - 1][1] + ' ' + tangents[i][0] + ' ' + pts[i];
    }
    path += 'C' + tangents[pLast][1] + ' ' + tangents[0][0] + ' ' + pts[0] + 'Z';
    return path;
};

function makeTangent(prevpt, thispt, nextpt, smoothness) {
    var d1x = prevpt[0] - thispt[0],
        d1y = prevpt[1] - thispt[1],
        d2x = nextpt[0] - thispt[0],
        d2y = nextpt[1] - thispt[1],
        d1a = Math.pow(d1x * d1x + d1y * d1y, CatmullRomExp / 2),
        d2a = Math.pow(d2x * d2x + d2y * d2y, CatmullRomExp / 2),
        numx = (d2a * d2a * d1x - d1a * d1a * d2x) * smoothness,
        numy = (d2a * d2a * d1y - d1a * d1a * d2y) * smoothness,
        denom1 = 3 * d2a * (d1a + d2a),
        denom2 = 3 * d1a * (d1a + d2a);
    return [
        [
            d3.round(thispt[0] + (denom1 && numx / denom1), 2),
            d3.round(thispt[1] + (denom1 && numy / denom1), 2)
        ], [
            d3.round(thispt[0] - (denom2 && numx / denom2), 2),
            d3.round(thispt[1] - (denom2 && numy / denom2), 2)
        ]
    ];
}

// step paths - returns a generator function for paths
// with the given step shape
var STEPPATH = {
    hv: function(p0, p1) {
        return 'H' + d3.round(p1[0], 2) + 'V' + d3.round(p1[1], 2);
    },
    vh: function(p0, p1) {
        return 'V' + d3.round(p1[1], 2) + 'H' + d3.round(p1[0], 2);
    },
    hvh: function(p0, p1) {
        return 'H' + d3.round((p0[0] + p1[0]) / 2, 2) + 'V' +
            d3.round(p1[1], 2) + 'H' + d3.round(p1[0], 2);
    },
    vhv: function(p0, p1) {
        return 'V' + d3.round((p0[1] + p1[1]) / 2, 2) + 'H' +
            d3.round(p1[0], 2) + 'V' + d3.round(p1[1], 2);
    }
};
var STEPLINEAR = function(p0, p1) {
    return 'L' + d3.round(p1[0], 2) + ',' + d3.round(p1[1], 2);
};
drawing.steps = function(shape) {
    var onestep = STEPPATH[shape] || STEPLINEAR;
    return function(pts) {
        var path = 'M' + d3.round(pts[0][0], 2) + ',' + d3.round(pts[0][1], 2);
        for(var i = 1; i < pts.length; i++) {
            path += onestep(pts[i - 1], pts[i]);
        }
        return path;
    };
};

// off-screen svg render testing element, shared by the whole page
// uses the id 'js-plotly-tester' and stores it in gd._tester
// makes a hash of cached text items in tester.node()._cache
// so we can add references to rendered text (including all info
// needed to fully determine its bounding rect)
drawing.makeTester = function(gd) {
    var tester = d3.select('body')
        .selectAll('#js-plotly-tester')
        .data([0]);

    tester.enter().append('svg')
        .attr('id', 'js-plotly-tester')
        .attr(xmlnsNamespaces.svgAttrs)
        .style({
            position: 'absolute',
            left: '-10000px',
            top: '-10000px',
            width: '9000px',
            height: '9000px',
            'z-index': '1'
        });

    // browsers differ on how they describe the bounding rect of
    // the svg if its contents spill over... so make a 1x1px
    // reference point we can measure off of.
    var testref = tester.selectAll('.js-reference-point').data([0]);
    testref.enter().append('path')
        .classed('js-reference-point', true)
        .attr('d', 'M0,0H1V1H0Z')
        .style({
            'stroke-width': 0,
            fill: 'black'
        });

    if(!tester.node()._cache) {
        tester.node()._cache = {};
    }

    gd._tester = tester;
    gd._testref = testref;
};

// use our offscreen tester to get a clientRect for an element,
// in a reference frame where it isn't translated and its anchor
// point is at (0,0)
// always returns a copy of the bbox, so the caller can modify it safely
var savedBBoxes = [],
    maxSavedBBoxes = 10000;
drawing.bBox = function(node) {
    // cache elements we've already measured so we don't have to
    // remeasure the same thing many times
    var saveNum = node.attributes['data-bb'];
    if(saveNum && saveNum.value) {
        return Lib.extendFlat({}, savedBBoxes[saveNum.value]);
    }

    var test3 = d3.select('#js-plotly-tester'),
        tester = test3.node();

    // copy the node to test into the tester
    var testNode = node.cloneNode(true);
    tester.appendChild(testNode);
    // standardize its position... do we really want to do this?
    d3.select(testNode).attr({
        x: 0,
        y: 0,
        transform: ''
    });

    var testRect = testNode.getBoundingClientRect(),
        refRect = test3.select('.js-reference-point')
            .node().getBoundingClientRect();

    tester.removeChild(testNode);

    var bb = {
        height: testRect.height,
        width: testRect.width,
        left: testRect.left - refRect.left,
        top: testRect.top - refRect.top,
        right: testRect.right - refRect.left,
        bottom: testRect.bottom - refRect.top
    };

    // make sure we don't have too many saved boxes,
    // or a long session could overload on memory
    // by saving boxes for long-gone elements
    if(savedBBoxes.length >= maxSavedBBoxes) {
        d3.selectAll('[data-bb]').attr('data-bb', null);
        savedBBoxes = [];
    }

    // cache this bbox
    node.setAttribute('data-bb', savedBBoxes.length);
    savedBBoxes.push(bb);

    return Lib.extendFlat({}, bb);
};

/*
 * make a robust clipPath url from a local id
 * note! We'd better not be exporting from a page
 * with a <base> or the svg will not be portable!
 */
drawing.setClipUrl = function(s, localId) {
    if(!localId) {
        s.attr('clip-path', null);
        return;
    }

    var url = '#' + localId,
        base = d3.select('base');

    // add id to location href w/o hashes if any)
    if(base.size() && base.attr('href')) {
        url = window.location.href.split('#')[0] + url;
    }

    s.attr('clip-path', 'url(' + url + ')');
};

},{"../../constants/xmlns_namespaces":595,"../../lib":610,"../../lib/svg_text_utils":625,"../../registry":717,"../../traces/scatter/make_bubble_size_func":849,"../../traces/scatter/subtypes":854,"../color":510,"../colorscale":524,"./symbol_defs":534,"d3":86,"fast-isnumeric":97}],534:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

/** Marker symbol definitions
 * users can specify markers either by number or name
 * add 100 (or '-open') and you get an open marker
 *  open markers have no fill and use line color as the stroke color
 * add 200 (or '-dot') and you get a dot in the middle
 * add both and you get both
 */

module.exports = {
    circle: {
        n: 0,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',0A' + rs + ',' + rs + ' 0 1,1 0,-' + rs +
                'A' + rs + ',' + rs + ' 0 0,1 ' + rs + ',0Z';
        }
    },
    square: {
        n: 1,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'H-' + rs + 'V-' + rs + 'H' + rs + 'Z';
        }
    },
    diamond: {
        n: 2,
        f: function(r) {
            var rd = d3.round(r * 1.3, 2);
            return 'M' + rd + ',0L0,' + rd + 'L-' + rd + ',0L0,-' + rd + 'Z';
        }
    },
    cross: {
        n: 3,
        f: function(r) {
            var rc = d3.round(r * 0.4, 2),
                rc2 = d3.round(r * 1.2, 2);
            return 'M' + rc2 + ',' + rc + 'H' + rc + 'V' + rc2 + 'H-' + rc +
                'V' + rc + 'H-' + rc2 + 'V-' + rc + 'H-' + rc + 'V-' + rc2 +
                'H' + rc + 'V-' + rc + 'H' + rc2 + 'Z';
        }
    },
    x: {
        n: 4,
        f: function(r) {
            var rx = d3.round(r * 0.8 / Math.sqrt(2), 2),
                ne = 'l' + rx + ',' + rx,
                se = 'l' + rx + ',-' + rx,
                sw = 'l-' + rx + ',-' + rx,
                nw = 'l-' + rx + ',' + rx;
            return 'M0,' + rx + ne + se + sw + se + sw + nw + sw + nw + ne + nw + ne + 'Z';
        }
    },
    'triangle-up': {
        n: 5,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M-' + rt + ',' + r2 + 'H' + rt + 'L0,-' + rs + 'Z';
        }
    },
    'triangle-down': {
        n: 6,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M-' + rt + ',-' + r2 + 'H' + rt + 'L0,' + rs + 'Z';
        }
    },
    'triangle-left': {
        n: 7,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M' + r2 + ',-' + rt + 'V' + rt + 'L-' + rs + ',0Z';
        }
    },
    'triangle-right': {
        n: 8,
        f: function(r) {
            var rt = d3.round(r * 2 / Math.sqrt(3), 2),
                r2 = d3.round(r / 2, 2),
                rs = d3.round(r, 2);
            return 'M-' + r2 + ',-' + rt + 'V' + rt + 'L' + rs + ',0Z';
        }
    },
    'triangle-ne': {
        n: 9,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M-' + r2 + ',-' + r1 + 'H' + r1 + 'V' + r2 + 'Z';
        }
    },
    'triangle-se': {
        n: 10,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M' + r1 + ',-' + r2 + 'V' + r1 + 'H-' + r2 + 'Z';
        }
    },
    'triangle-sw': {
        n: 11,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M' + r2 + ',' + r1 + 'H-' + r1 + 'V-' + r2 + 'Z';
        }
    },
    'triangle-nw': {
        n: 12,
        f: function(r) {
            var r1 = d3.round(r * 0.6, 2),
                r2 = d3.round(r * 1.2, 2);
            return 'M-' + r1 + ',' + r2 + 'V-' + r1 + 'H' + r2 + 'Z';
        }
    },
    pentagon: {
        n: 13,
        f: function(r) {
            var x1 = d3.round(r * 0.951, 2),
                x2 = d3.round(r * 0.588, 2),
                y0 = d3.round(-r, 2),
                y1 = d3.round(r * -0.309, 2),
                y2 = d3.round(r * 0.809, 2);
            return 'M' + x1 + ',' + y1 + 'L' + x2 + ',' + y2 + 'H-' + x2 +
                'L-' + x1 + ',' + y1 + 'L0,' + y0 + 'Z';
        }
    },
    hexagon: {
        n: 14,
        f: function(r) {
            var y0 = d3.round(r, 2),
                y1 = d3.round(r / 2, 2),
                x = d3.round(r * Math.sqrt(3) / 2, 2);
            return 'M' + x + ',-' + y1 + 'V' + y1 + 'L0,' + y0 +
                'L-' + x + ',' + y1 + 'V-' + y1 + 'L0,-' + y0 + 'Z';
        }
    },
    hexagon2: {
        n: 15,
        f: function(r) {
            var x0 = d3.round(r, 2),
                x1 = d3.round(r / 2, 2),
                y = d3.round(r * Math.sqrt(3) / 2, 2);
            return 'M-' + x1 + ',' + y + 'H' + x1 + 'L' + x0 +
                ',0L' + x1 + ',-' + y + 'H-' + x1 + 'L-' + x0 + ',0Z';
        }
    },
    octagon: {
        n: 16,
        f: function(r) {
            var a = d3.round(r * 0.924, 2),
                b = d3.round(r * 0.383, 2);
            return 'M-' + b + ',-' + a + 'H' + b + 'L' + a + ',-' + b + 'V' + b +
                'L' + b + ',' + a + 'H-' + b + 'L-' + a + ',' + b + 'V-' + b + 'Z';
        }
    },
    star: {
        n: 17,
        f: function(r) {
            var rs = r * 1.4,
                x1 = d3.round(rs * 0.225, 2),
                x2 = d3.round(rs * 0.951, 2),
                x3 = d3.round(rs * 0.363, 2),
                x4 = d3.round(rs * 0.588, 2),
                y0 = d3.round(-rs, 2),
                y1 = d3.round(rs * -0.309, 2),
                y3 = d3.round(rs * 0.118, 2),
                y4 = d3.round(rs * 0.809, 2),
                y5 = d3.round(rs * 0.382, 2);
            return 'M' + x1 + ',' + y1 + 'H' + x2 + 'L' + x3 + ',' + y3 +
                'L' + x4 + ',' + y4 + 'L0,' + y5 + 'L-' + x4 + ',' + y4 +
                'L-' + x3 + ',' + y3 + 'L-' + x2 + ',' + y1 + 'H-' + x1 +
                'L0,' + y0 + 'Z';
        }
    },
    hexagram: {
        n: 18,
        f: function(r) {
            var y = d3.round(r * 0.66, 2),
                x1 = d3.round(r * 0.38, 2),
                x2 = d3.round(r * 0.76, 2);
            return 'M-' + x2 + ',0l-' + x1 + ',-' + y + 'h' + x2 +
                'l' + x1 + ',-' + y + 'l' + x1 + ',' + y + 'h' + x2 +
                'l-' + x1 + ',' + y + 'l' + x1 + ',' + y + 'h-' + x2 +
                'l-' + x1 + ',' + y + 'l-' + x1 + ',-' + y + 'h-' + x2 + 'Z';
        }
    },
    'star-triangle-up': {
        n: 19,
        f: function(r) {
            var x = d3.round(r * Math.sqrt(3) * 0.8, 2),
                y1 = d3.round(r * 0.8, 2),
                y2 = d3.round(r * 1.6, 2),
                rc = d3.round(r * 4, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M-' + x + ',' + y1 + aPart + x + ',' + y1 +
                aPart + '0,-' + y2 + aPart + '-' + x + ',' + y1 + 'Z';
        }
    },
    'star-triangle-down': {
        n: 20,
        f: function(r) {
            var x = d3.round(r * Math.sqrt(3) * 0.8, 2),
                y1 = d3.round(r * 0.8, 2),
                y2 = d3.round(r * 1.6, 2),
                rc = d3.round(r * 4, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M' + x + ',-' + y1 + aPart + '-' + x + ',-' + y1 +
                aPart + '0,' + y2 + aPart + x + ',-' + y1 + 'Z';
        }
    },
    'star-square': {
        n: 21,
        f: function(r) {
            var rp = d3.round(r * 1.1, 2),
                rc = d3.round(r * 2, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M-' + rp + ',-' + rp + aPart + '-' + rp + ',' + rp +
                aPart + rp + ',' + rp + aPart + rp + ',-' + rp +
                aPart + '-' + rp + ',-' + rp + 'Z';
        }
    },
    'star-diamond': {
        n: 22,
        f: function(r) {
            var rp = d3.round(r * 1.4, 2),
                rc = d3.round(r * 1.9, 2),
                aPart = 'A ' + rc + ',' + rc + ' 0 0 1 ';
            return 'M-' + rp + ',0' + aPart + '0,' + rp +
                aPart + rp + ',0' + aPart + '0,-' + rp +
                aPart + '-' + rp + ',0' + 'Z';
        }
    },
    'diamond-tall': {
        n: 23,
        f: function(r) {
            var x = d3.round(r * 0.7, 2),
                y = d3.round(r * 1.4, 2);
            return 'M0,' + y + 'L' + x + ',0L0,-' + y + 'L-' + x + ',0Z';
        }
    },
    'diamond-wide': {
        n: 24,
        f: function(r) {
            var x = d3.round(r * 1.4, 2),
                y = d3.round(r * 0.7, 2);
            return 'M0,' + y + 'L' + x + ',0L0,-' + y + 'L-' + x + ',0Z';
        }
    },
    hourglass: {
        n: 25,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'H-' + rs + 'L' + rs + ',-' + rs + 'H-' + rs + 'Z';
        },
        noDot: true
    },
    bowtie: {
        n: 26,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'V-' + rs + 'L-' + rs + ',' + rs + 'V-' + rs + 'Z';
        },
        noDot: true
    },
    'circle-cross': {
        n: 27,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M0,' + rs + 'V-' + rs + 'M' + rs + ',0H-' + rs +
                'M' + rs + ',0A' + rs + ',' + rs + ' 0 1,1 0,-' + rs +
                'A' + rs + ',' + rs + ' 0 0,1 ' + rs + ',0Z';
        },
        needLine: true,
        noDot: true
    },
    'circle-x': {
        n: 28,
        f: function(r) {
            var rs = d3.round(r, 2),
                rc = d3.round(r / Math.sqrt(2), 2);
            return 'M' + rc + ',' + rc + 'L-' + rc + ',-' + rc +
                'M' + rc + ',-' + rc + 'L-' + rc + ',' + rc +
                'M' + rs + ',0A' + rs + ',' + rs + ' 0 1,1 0,-' + rs +
                'A' + rs + ',' + rs + ' 0 0,1 ' + rs + ',0Z';
        },
        needLine: true,
        noDot: true
    },
    'square-cross': {
        n: 29,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M0,' + rs + 'V-' + rs + 'M' + rs + ',0H-' + rs +
                'M' + rs + ',' + rs + 'H-' + rs + 'V-' + rs + 'H' + rs + 'Z';
        },
        needLine: true,
        noDot: true
    },
    'square-x': {
        n: 30,
        f: function(r) {
            var rs = d3.round(r, 2);
            return 'M' + rs + ',' + rs + 'L-' + rs + ',-' + rs +
                'M' + rs + ',-' + rs + 'L-' + rs + ',' + rs +
                'M' + rs + ',' + rs + 'H-' + rs + 'V-' + rs + 'H' + rs + 'Z';
        },
        needLine: true,
        noDot: true
    },
    'diamond-cross': {
        n: 31,
        f: function(r) {
            var rd = d3.round(r * 1.3, 2);
            return 'M' + rd + ',0L0,' + rd + 'L-' + rd + ',0L0,-' + rd + 'Z' +
                'M0,-' + rd + 'V' + rd + 'M-' + rd + ',0H' + rd;
        },
        needLine: true,
        noDot: true
    },
    'diamond-x': {
        n: 32,
        f: function(r) {
            var rd = d3.round(r * 1.3, 2),
                r2 = d3.round(r * 0.65, 2);
            return 'M' + rd + ',0L0,' + rd + 'L-' + rd + ',0L0,-' + rd + 'Z' +
                'M-' + r2 + ',-' + r2 + 'L' + r2 + ',' + r2 +
                'M-' + r2 + ',' + r2 + 'L' + r2 + ',-' + r2;
        },
        needLine: true,
        noDot: true
    },
    'cross-thin': {
        n: 33,
        f: function(r) {
            var rc = d3.round(r * 1.4, 2);
            return 'M0,' + rc + 'V-' + rc + 'M' + rc + ',0H-' + rc;
        },
        needLine: true,
        noDot: true
    },
    'x-thin': {
        n: 34,
        f: function(r) {
            var rx = d3.round(r, 2);
            return 'M' + rx + ',' + rx + 'L-' + rx + ',-' + rx +
                'M' + rx + ',-' + rx + 'L-' + rx + ',' + rx;
        },
        needLine: true,
        noDot: true
    },
    asterisk: {
        n: 35,
        f: function(r) {
            var rc = d3.round(r * 1.2, 2);
            var rs = d3.round(r * 0.85, 2);
            return 'M0,' + rc + 'V-' + rc + 'M' + rc + ',0H-' + rc +
                'M' + rs + ',' + rs + 'L-' + rs + ',-' + rs +
                'M' + rs + ',-' + rs + 'L-' + rs + ',' + rs;
        },
        needLine: true,
        noDot: true
    },
    hash: {
        n: 36,
        f: function(r) {
            var r1 = d3.round(r / 2, 2),
                r2 = d3.round(r, 2);
            return 'M' + r1 + ',' + r2 + 'V-' + r2 +
                'm-' + r2 + ',0V' + r2 +
                'M' + r2 + ',' + r1 + 'H-' + r2 +
                'm0,-' + r2 + 'H' + r2;
        },
        needLine: true
    },
    'y-up': {
        n: 37,
        f: function(r) {
            var x = d3.round(r * 1.2, 2),
                y0 = d3.round(r * 1.6, 2),
                y1 = d3.round(r * 0.8, 2);
            return 'M-' + x + ',' + y1 + 'L0,0M' + x + ',' + y1 + 'L0,0M0,-' + y0 + 'L0,0';
        },
        needLine: true,
        noDot: true
    },
    'y-down': {
        n: 38,
        f: function(r) {
            var x = d3.round(r * 1.2, 2),
                y0 = d3.round(r * 1.6, 2),
                y1 = d3.round(r * 0.8, 2);
            return 'M-' + x + ',-' + y1 + 'L0,0M' + x + ',-' + y1 + 'L0,0M0,' + y0 + 'L0,0';
        },
        needLine: true,
        noDot: true
    },
    'y-left': {
        n: 39,
        f: function(r) {
            var y = d3.round(r * 1.2, 2),
                x0 = d3.round(r * 1.6, 2),
                x1 = d3.round(r * 0.8, 2);
            return 'M' + x1 + ',' + y + 'L0,0M' + x1 + ',-' + y + 'L0,0M-' + x0 + ',0L0,0';
        },
        needLine: true,
        noDot: true
    },
    'y-right': {
        n: 40,
        f: function(r) {
            var y = d3.round(r * 1.2, 2),
                x0 = d3.round(r * 1.6, 2),
                x1 = d3.round(r * 0.8, 2);
            return 'M-' + x1 + ',' + y + 'L0,0M-' + x1 + ',-' + y + 'L0,0M' + x0 + ',0L0,0';
        },
        needLine: true,
        noDot: true
    },
    'line-ew': {
        n: 41,
        f: function(r) {
            var rc = d3.round(r * 1.4, 2);
            return 'M' + rc + ',0H-' + rc;
        },
        needLine: true,
        noDot: true
    },
    'line-ns': {
        n: 42,
        f: function(r) {
            var rc = d3.round(r * 1.4, 2);
            return 'M0,' + rc + 'V-' + rc;
        },
        needLine: true,
        noDot: true
    },
    'line-ne': {
        n: 43,
        f: function(r) {
            var rx = d3.round(r, 2);
            return 'M' + rx + ',-' + rx + 'L-' + rx + ',' + rx;
        },
        needLine: true,
        noDot: true
    },
    'line-nw': {
        n: 44,
        f: function(r) {
            var rx = d3.round(r, 2);
            return 'M' + rx + ',' + rx + 'L-' + rx + ',-' + rx;
        },
        needLine: true,
        noDot: true
    }
};

},{"d3":86}],535:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    visible: {
        valType: 'boolean',
        role: 'info',
        description: [
            'Determines whether or not this set of error bars is visible.'
        ].join(' ')
    },
    type: {
        valType: 'enumerated',
        values: ['percent', 'constant', 'sqrt', 'data'],
        role: 'info',
        description: [
            'Determines the rule used to generate the error bars.',

            'If *constant`, the bar lengths are of a constant value.',
            'Set this constant in `value`.',

            'If *percent*, the bar lengths correspond to a percentage of',
            'underlying data. Set this percentage in `value`.',

            'If *sqrt*, the bar lengths correspond to the sqaure of the',
            'underlying data.',

            'If *array*, the bar lengths are set with data set `array`.'
        ].join(' ')
    },
    symmetric: {
        valType: 'boolean',
        role: 'info',
        description: [
            'Determines whether or not the error bars have the same length',
            'in both direction',
            '(top/bottom for vertical bars, left/right for horizontal bars.'
        ].join(' ')
    },
    array: {
        valType: 'data_array',
        description: [
            'Sets the data corresponding the length of each error bar.',
            'Values are plotted relative to the underlying data.'
        ].join(' ')
    },
    arrayminus: {
        valType: 'data_array',
        description: [
            'Sets the data corresponding the length of each error bar in the',
            'bottom (left) direction for vertical (horizontal) bars',
            'Values are plotted relative to the underlying data.'
        ].join(' ')
    },
    value: {
        valType: 'number',
        min: 0,
        dflt: 10,
        role: 'info',
        description: [
            'Sets the value of either the percentage',
            '(if `type` is set to *percent*) or the constant',
            '(if `type` is set to *constant*) corresponding to the lengths of',
            'the error bars.'
        ].join(' ')
    },
    valueminus: {
        valType: 'number',
        min: 0,
        dflt: 10,
        role: 'info',
        description: [
            'Sets the value of either the percentage',
            '(if `type` is set to *percent*) or the constant',
            '(if `type` is set to *constant*) corresponding to the lengths of',
            'the error bars in the',
            'bottom (left) direction for vertical (horizontal) bars'
        ].join(' ')
    },
    traceref: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        role: 'info'
    },
    tracerefminus: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        role: 'info'
    },
    copy_ystyle: {
        valType: 'boolean',
        role: 'style'
    },
    copy_zstyle: {
        valType: 'boolean',
        role: 'style'
    },
    color: {
        valType: 'color',
        role: 'style',
        description: 'Sets the stoke color of the error bars.'
    },
    thickness: {
        valType: 'number',
        min: 0,
        dflt: 2,
        role: 'style',
        description: 'Sets the thickness (in px) of the error bars.'
    },
    width: {
        valType: 'number',
        min: 0,
        role: 'style',
        description: [
            'Sets the width (in px) of the cross-bar at both ends',
            'of the error bars.'
        ].join(' ')
    },

    _deprecated: {
        opacity: {
            valType: 'number',
            role: 'style',
            description: [
                'Obsolete.',
                'Use the alpha channel in error bar `color` to set the opacity.'
            ].join(' ')
        }
    }
};

},{}],536:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');

var makeComputeError = require('./compute_error');


module.exports = function calc(gd) {
    var calcdata = gd.calcdata;

    for(var i = 0; i < calcdata.length; i++) {
        var calcTrace = calcdata[i],
            trace = calcTrace[0].trace;

        if(!Registry.traceIs(trace, 'errorBarsOK')) continue;

        var xa = Axes.getFromId(gd, trace.xaxis),
            ya = Axes.getFromId(gd, trace.yaxis);

        calcOneAxis(calcTrace, trace, xa, 'x');
        calcOneAxis(calcTrace, trace, ya, 'y');
    }
};

function calcOneAxis(calcTrace, trace, axis, coord) {
    var opts = trace['error_' + coord] || {},
        isVisible = (opts.visible && ['linear', 'log'].indexOf(axis.type) !== -1),
        vals = [];

    if(!isVisible) return;

    var computeError = makeComputeError(opts);

    for(var i = 0; i < calcTrace.length; i++) {
        var calcPt = calcTrace[i],
            calcCoord = calcPt[coord];

        if(!isNumeric(axis.c2l(calcCoord))) continue;

        var errors = computeError(calcCoord, i);
        if(isNumeric(errors[0]) && isNumeric(errors[1])) {
            var shoe = calcPt[coord + 's'] = calcCoord - errors[0],
                hat = calcPt[coord + 'h'] = calcCoord + errors[1];
            vals.push(shoe, hat);
        }
    }

    Axes.expand(axis, vals, {padded: true});
}

},{"../../plots/cartesian/axes":642,"../../registry":717,"./compute_error":537,"fast-isnumeric":97}],537:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


/**
 * Error bar computing function generator
 *
 * N.B. The generated function does not clean the dataPt entries. Non-numeric
 * entries result in undefined error magnitudes.
 *
 * @param {object} opts error bar attributes
 *
 * @return {function} :
 *      @param {numeric} dataPt data point from where to compute the error magnitude
 *      @param {number} index index of dataPt in its corresponding data array
 *      @return {array}
 *        - error[0] : error magnitude in the negative direction
 *        - error[1] : " " " " positive "
 */
module.exports = function makeComputeError(opts) {
    var type = opts.type,
        symmetric = opts.symmetric;

    if(type === 'data') {
        var array = opts.array,
            arrayminus = opts.arrayminus;

        if(symmetric || arrayminus === undefined) {
            return function computeError(dataPt, index) {
                var val = +(array[index]);
                return [val, val];
            };
        }
        else {
            return function computeError(dataPt, index) {
                return [+arrayminus[index], +array[index]];
            };
        }
    }
    else {
        var computeErrorValue = makeComputeErrorValue(type, opts.value),
            computeErrorValueMinus = makeComputeErrorValue(type, opts.valueminus);

        if(symmetric || opts.valueminus === undefined) {
            return function computeError(dataPt) {
                var val = computeErrorValue(dataPt);
                return [val, val];
            };
        }
        else {
            return function computeError(dataPt) {
                return [
                    computeErrorValueMinus(dataPt),
                    computeErrorValue(dataPt)
                ];
            };
        }
    }
};

/**
 * Compute error bar magnitude (for all types except data)
 *
 * @param {string} type error bar type
 * @param {numeric} value error bar value
 *
 * @return {function} :
 *      @param {numeric} dataPt
 */
function makeComputeErrorValue(type, value) {
    if(type === 'percent') {
        return function(dataPt) {
            return Math.abs(dataPt * value / 100);
        };
    }
    if(type === 'constant') {
        return function() {
            return Math.abs(value);
        };
    }
    if(type === 'sqrt') {
        return function(dataPt) {
            return Math.sqrt(Math.abs(dataPt));
        };
    }
}

},{}],538:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Lib = require('../../lib');

var attributes = require('./attributes');


module.exports = function(traceIn, traceOut, defaultColor, opts) {
    var objName = 'error_' + opts.axis,
        containerOut = traceOut[objName] = {},
        containerIn = traceIn[objName] || {};

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, attributes, attr, dflt);
    }

    var hasErrorBars = (
        containerIn.array !== undefined ||
        containerIn.value !== undefined ||
        containerIn.type === 'sqrt'
    );

    var visible = coerce('visible', hasErrorBars);

    if(visible === false) return;

    var type = coerce('type', 'array' in containerIn ? 'data' : 'percent'),
        symmetric = true;

    if(type !== 'sqrt') {
        symmetric = coerce('symmetric',
            !((type === 'data' ? 'arrayminus' : 'valueminus') in containerIn));
    }

    if(type === 'data') {
        var array = coerce('array');
        if(!array) containerOut.array = [];
        coerce('traceref');
        if(!symmetric) {
            var arrayminus = coerce('arrayminus');
            if(!arrayminus) containerOut.arrayminus = [];
            coerce('tracerefminus');
        }
    }
    else if(type === 'percent' || type === 'constant') {
        coerce('value');
        if(!symmetric) coerce('valueminus');
    }

    var copyAttr = 'copy_' + opts.inherit + 'style';
    if(opts.inherit) {
        var inheritObj = traceOut['error_' + opts.inherit];
        if((inheritObj || {}).visible) {
            coerce(copyAttr, !(containerIn.color ||
                               isNumeric(containerIn.thickness) ||
                               isNumeric(containerIn.width)));
        }
    }
    if(!opts.inherit || !containerOut[copyAttr]) {
        coerce('color', defaultColor);
        coerce('thickness');
        coerce('width', Registry.traceIs(traceOut, 'gl3d') ? 0 : 4);
    }
};

},{"../../lib":610,"../../registry":717,"./attributes":535,"fast-isnumeric":97}],539:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var errorBars = module.exports = {};

errorBars.attributes = require('./attributes');

errorBars.supplyDefaults = require('./defaults');

errorBars.calc = require('./calc');

errorBars.calcFromTrace = function(trace, layout) {
    var x = trace.x || [],
        y = trace.y,
        len = x.length || y.length;

    var calcdataMock = new Array(len);

    for(var i = 0; i < len; i++) {
        calcdataMock[i] = {
            x: x[i],
            y: y[i]
        };
    }

    calcdataMock[0].trace = trace;

    errorBars.calc({
        calcdata: [calcdataMock],
        _fullLayout: layout
    });

    return calcdataMock;
};

errorBars.plot = require('./plot');

errorBars.style = require('./style');

errorBars.hoverInfo = function(calcPoint, trace, hoverPoint) {
    if((trace.error_y || {}).visible) {
        hoverPoint.yerr = calcPoint.yh - calcPoint.y;
        if(!trace.error_y.symmetric) hoverPoint.yerrneg = calcPoint.y - calcPoint.ys;
    }
    if((trace.error_x || {}).visible) {
        hoverPoint.xerr = calcPoint.xh - calcPoint.x;
        if(!trace.error_x.symmetric) hoverPoint.xerrneg = calcPoint.x - calcPoint.xs;
    }
};

},{"./attributes":535,"./calc":536,"./defaults":538,"./plot":540,"./style":541}],540:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var subTypes = require('../../traces/scatter/subtypes');

module.exports = function plot(traces, plotinfo, transitionOpts) {
    var isNew;

    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis;

    var hasAnimation = transitionOpts && transitionOpts.duration > 0;

    traces.each(function(d) {
        var trace = d[0].trace,
            // || {} is in case the trace (specifically scatterternary)
            // doesn't support error bars at all, but does go through
            // the scatter.plot mechanics, which calls ErrorBars.plot
            // internally
            xObj = trace.error_x || {},
            yObj = trace.error_y || {};

        var keyFunc;

        if(trace.ids) {
            keyFunc = function(d) {return d.id;};
        }

        var sparse = (
            subTypes.hasMarkers(trace) &&
            trace.marker.maxdisplayed > 0
        );

        if(!yObj.visible && !xObj.visible) return;

        var errorbars = d3.select(this).selectAll('g.errorbar')
            .data(d, keyFunc);

        errorbars.exit().remove();

        errorbars.style('opacity', 1);

        var enter = errorbars.enter().append('g')
            .classed('errorbar', true);

        if(hasAnimation) {
            enter.style('opacity', 0).transition()
                .duration(transitionOpts.duration)
                .style('opacity', 1);
        }

        errorbars.each(function(d) {
            var errorbar = d3.select(this);
            var coords = errorCoords(d, xa, ya);

            if(sparse && !d.vis) return;

            var path;

            if(yObj.visible && isNumeric(coords.x) &&
                    isNumeric(coords.yh) &&
                    isNumeric(coords.ys)) {
                var yw = yObj.width;

                path = 'M' + (coords.x - yw) + ',' +
                    coords.yh + 'h' + (2 * yw) + // hat
                    'm-' + yw + ',0V' + coords.ys; // bar


                if(!coords.noYS) path += 'm-' + yw + ',0h' + (2 * yw); // shoe

                var yerror = errorbar.select('path.yerror');

                isNew = !yerror.size();

                if(isNew) {
                    yerror = errorbar.append('path')
                        .classed('yerror', true);
                } else if(hasAnimation) {
                    yerror = yerror
                        .transition()
                            .duration(transitionOpts.duration)
                            .ease(transitionOpts.easing);
                }

                yerror.attr('d', path);
            }

            if(xObj.visible && isNumeric(coords.y) &&
                    isNumeric(coords.xh) &&
                    isNumeric(coords.xs)) {
                var xw = (xObj.copy_ystyle ? yObj : xObj).width;

                path = 'M' + coords.xh + ',' +
                    (coords.y - xw) + 'v' + (2 * xw) + // hat
                    'm0,-' + xw + 'H' + coords.xs; // bar

                if(!coords.noXS) path += 'm0,-' + xw + 'v' + (2 * xw); // shoe

                var xerror = errorbar.select('path.xerror');

                isNew = !xerror.size();

                if(isNew) {
                    xerror = errorbar.append('path')
                        .classed('xerror', true);
                } else if(hasAnimation) {
                    xerror = xerror
                        .transition()
                            .duration(transitionOpts.duration)
                            .ease(transitionOpts.easing);
                }

                xerror.attr('d', path);
            }
        });
    });
};

// compute the coordinates of the error-bar objects
function errorCoords(d, xa, ya) {
    var out = {
        x: xa.c2p(d.x),
        y: ya.c2p(d.y)
    };

    // calculate the error bar size and hat and shoe locations
    if(d.yh !== undefined) {
        out.yh = ya.c2p(d.yh);
        out.ys = ya.c2p(d.ys);

        // if the shoes go off-scale (ie log scale, error bars past zero)
        // clip the bar and hide the shoes
        if(!isNumeric(out.ys)) {
            out.noYS = true;
            out.ys = ya.c2p(d.ys, true);
        }
    }

    if(d.xh !== undefined) {
        out.xh = xa.c2p(d.xh);
        out.xs = xa.c2p(d.xs);

        if(!isNumeric(out.xs)) {
            out.noXS = true;
            out.xs = xa.c2p(d.xs, true);
        }
    }

    return out;
}

},{"../../traces/scatter/subtypes":854,"d3":86,"fast-isnumeric":97}],541:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Color = require('../color');


module.exports = function style(traces) {
    traces.each(function(d) {
        var trace = d[0].trace,
            yObj = trace.error_y || {},
            xObj = trace.error_x || {};

        var s = d3.select(this);

        s.selectAll('path.yerror')
            .style('stroke-width', yObj.thickness + 'px')
            .call(Color.stroke, yObj.color);

        if(xObj.copy_ystyle) xObj = yObj;

        s.selectAll('path.xerror')
            .style('stroke-width', xObj.thickness + 'px')
            .call(Color.stroke, xObj.color);
    });
};

},{"../color":510,"d3":86}],542:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var cartesianConstants = require('../../plots/cartesian/constants');


module.exports = {
    _isLinkedToArray: 'image',

    visible: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not this image is visible.'
        ].join(' ')
    },

    source: {
        valType: 'string',
        role: 'info',
        description: [
            'Specifies the URL of the image to be used.',
            'The URL must be accessible from the domain where the',
            'plot code is run, and can be either relative or absolute.'

        ].join(' ')
    },

    layer: {
        valType: 'enumerated',
        values: ['below', 'above'],
        dflt: 'above',
        role: 'info',
        description: [
            'Specifies whether images are drawn below or above traces.',
            'When `xref` and `yref` are both set to `paper`,',
            'image is drawn below the entire plot area.'
        ].join(' ')
    },

    sizex: {
        valType: 'number',
        role: 'info',
        dflt: 0,
        description: [
            'Sets the image container size horizontally.',
            'The image will be sized based on the `position` value.',
            'When `xref` is set to `paper`, units are sized relative',
            'to the plot width.'
        ].join(' ')
    },

    sizey: {
        valType: 'number',
        role: 'info',
        dflt: 0,
        description: [
            'Sets the image container size vertically.',
            'The image will be sized based on the `position` value.',
            'When `yref` is set to `paper`, units are sized relative',
            'to the plot height.'
        ].join(' ')
    },

    sizing: {
        valType: 'enumerated',
        values: ['fill', 'contain', 'stretch'],
        dflt: 'contain',
        role: 'info',
        description: [
            'Specifies which dimension of the image to constrain.'
        ].join(' ')
    },

    opacity: {
        valType: 'number',
        role: 'info',
        min: 0,
        max: 1,
        dflt: 1,
        description: 'Sets the opacity of the image.'
    },

    x: {
        valType: 'any',
        role: 'info',
        dflt: 0,
        description: [
            'Sets the image\'s x position.',
            'When `xref` is set to `paper`, units are sized relative',
            'to the plot height.',
            'See `xref` for more info'
        ].join(' ')
    },

    y: {
        valType: 'any',
        role: 'info',
        dflt: 0,
        description: [
            'Sets the image\'s y position.',
            'When `yref` is set to `paper`, units are sized relative',
            'to the plot height.',
            'See `yref` for more info'
        ].join(' ')
    },

    xanchor: {
        valType: 'enumerated',
        values: ['left', 'center', 'right'],
        dflt: 'left',
        role: 'info',
        description: 'Sets the anchor for the x position'
    },

    yanchor: {
        valType: 'enumerated',
        values: ['top', 'middle', 'bottom'],
        dflt: 'top',
        role: 'info',
        description: 'Sets the anchor for the y position.'
    },

    xref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.x.toString()
        ],
        dflt: 'paper',
        role: 'info',
        description: [
            'Sets the images\'s x coordinate axis.',
            'If set to a x axis id (e.g. *x* or *x2*), the `x` position',
            'refers to an x data coordinate',
            'If set to *paper*, the `x` position refers to the distance from',
            'the left of plot in normalized coordinates',
            'where *0* (*1*) corresponds to the left (right).'
        ].join(' ')
    },

    yref: {
        valType: 'enumerated',
        values: [
            'paper',
            cartesianConstants.idRegex.y.toString()
        ],
        dflt: 'paper',
        role: 'info',
        description: [
            'Sets the images\'s y coordinate axis.',
            'If set to a y axis id (e.g. *y* or *y2*), the `y` position',
            'refers to a y data coordinate.',
            'If set to *paper*, the `y` position refers to the distance from',
            'the bottom of the plot in normalized coordinates',
            'where *0* (*1*) corresponds to the bottom (top).'
        ].join(' ')
    }
};

},{"../../plots/cartesian/constants":647}],543:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');

var attributes = require('./attributes');
var name = 'images';

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    var opts = {
        name: name,
        handleItemDefaults: imageDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};


function imageDefaults(imageIn, imageOut, fullLayout) {

    function coerce(attr, dflt) {
        return Lib.coerce(imageIn, imageOut, attributes, attr, dflt);
    }

    var source = coerce('source');
    var visible = coerce('visible', !!source);

    if(!visible) return imageOut;

    coerce('layer');
    coerce('x');
    coerce('y');
    coerce('xanchor');
    coerce('yanchor');
    coerce('sizex');
    coerce('sizey');
    coerce('sizing');
    coerce('opacity');

    var gdMock = { _fullLayout: fullLayout },
        axLetters = ['x', 'y'];

    for(var i = 0; i < 2; i++) {
        // 'paper' is the fallback axref
        Axes.coerceRef(imageIn, imageOut, gdMock, axLetters[i], 'paper');
    }

    return imageOut;
}

},{"../../lib":610,"../../plots/array_container_defaults":639,"../../plots/cartesian/axes":642,"./attributes":542}],544:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');
var Drawing = require('../drawing');
var Axes = require('../../plots/cartesian/axes');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');

module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout,
        imageDataAbove = [],
        imageDataSubplot = [],
        imageDataBelow = [];

    // Sort into top, subplot, and bottom layers
    for(var i = 0; i < fullLayout.images.length; i++) {
        var img = fullLayout.images[i];

        if(img.visible) {
            if(img.layer === 'below' && img.xref !== 'paper' && img.yref !== 'paper') {
                imageDataSubplot.push(img);
            } else if(img.layer === 'above') {
                imageDataAbove.push(img);
            } else {
                imageDataBelow.push(img);
            }
        }
    }


    var anchors = {
        x: {
            left: { sizing: 'xMin', offset: 0 },
            center: { sizing: 'xMid', offset: -1 / 2 },
            right: { sizing: 'xMax', offset: -1 }
        },
        y: {
            top: { sizing: 'YMin', offset: 0 },
            middle: { sizing: 'YMid', offset: -1 / 2 },
            bottom: { sizing: 'YMax', offset: -1 }
        }
    };


    // Images must be converted to dataURL's for exporting.
    function setImage(d) {
        var thisImage = d3.select(this);

        if(this.img && this.img.src === d.source) {
            return;
        }

        thisImage.attr('xmlns', xmlnsNamespaces.svg);

        var imagePromise = new Promise(function(resolve) {

            var img = new Image();
            this.img = img;

            // If not set, a `tainted canvas` error is thrown
            img.setAttribute('crossOrigin', 'anonymous');
            img.onerror = errorHandler;
            img.onload = function() {
                var canvas = document.createElement('canvas');
                canvas.width = this.width;
                canvas.height = this.height;

                var ctx = canvas.getContext('2d');
                ctx.drawImage(this, 0, 0);

                var dataURL = canvas.toDataURL('image/png');

                thisImage.attr('xlink:href', dataURL);
            };


            thisImage.on('error', errorHandler);
            thisImage.on('load', resolve);

            img.src = d.source;

            function errorHandler() {
                thisImage.remove();
                resolve();
            }
        }.bind(this));

        gd._promises.push(imagePromise);
    }

    function applyAttributes(d) {
        var thisImage = d3.select(this);

        // Axes if specified
        var xa = Axes.getFromId(gd, d.xref),
            ya = Axes.getFromId(gd, d.yref);

        var size = fullLayout._size,
            width = xa ? Math.abs(xa.l2p(d.sizex) - xa.l2p(0)) : d.sizex * size.w,
            height = ya ? Math.abs(ya.l2p(d.sizey) - ya.l2p(0)) : d.sizey * size.h;

        // Offsets for anchor positioning
        var xOffset = width * anchors.x[d.xanchor].offset,
            yOffset = height * anchors.y[d.yanchor].offset;

        var sizing = anchors.x[d.xanchor].sizing + anchors.y[d.yanchor].sizing;

        // Final positions
        var xPos = (xa ? xa.r2p(d.x) + xa._offset : d.x * size.w + size.l) + xOffset,
            yPos = (ya ? ya.r2p(d.y) + ya._offset : size.h - d.y * size.h + size.t) + yOffset;


        // Construct the proper aspectRatio attribute
        switch(d.sizing) {
            case 'fill':
                sizing += ' slice';
                break;

            case 'stretch':
                sizing = 'none';
                break;
        }

        thisImage.attr({
            x: xPos,
            y: yPos,
            width: width,
            height: height,
            preserveAspectRatio: sizing,
            opacity: d.opacity
        });


        // Set proper clipping on images
        var xId = xa ? xa._id : '',
            yId = ya ? ya._id : '',
            clipAxes = xId + yId;

        if(clipAxes) {
            thisImage.call(Drawing.setClipUrl, 'clip' + fullLayout._uid + clipAxes);
        }
    }

    var imagesBelow = fullLayout._imageLowerLayer.selectAll('image')
            .data(imageDataBelow),
        imagesSubplot = fullLayout._imageSubplotLayer.selectAll('image')
            .data(imageDataSubplot),
        imagesAbove = fullLayout._imageUpperLayer.selectAll('image')
            .data(imageDataAbove);

    imagesBelow.enter().append('image');
    imagesSubplot.enter().append('image');
    imagesAbove.enter().append('image');

    imagesBelow.exit().remove();
    imagesSubplot.exit().remove();
    imagesAbove.exit().remove();

    imagesBelow.each(function(d) {
        setImage.bind(this)(d);
        applyAttributes.bind(this)(d);
    });
    imagesSubplot.each(function(d) {
        setImage.bind(this)(d);
        applyAttributes.bind(this)(d);
    });
    imagesAbove.each(function(d) {
        setImage.bind(this)(d);
        applyAttributes.bind(this)(d);
    });
};

},{"../../constants/xmlns_namespaces":595,"../../plots/cartesian/axes":642,"../drawing":533,"d3":86}],545:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'images',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    draw: require('./draw')
};

},{"./attributes":542,"./defaults":543,"./draw":544}],546:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


/**
 * Determine the position anchor property of x/y xanchor/yanchor components.
 *
 * - values < 1/3 align the low side at that fraction,
 * - values [1/3, 2/3] align the center at that fraction,
 * - values > 2/3 align the right at that fraction.
 */

exports.isRightAnchor = function isRightAnchor(opts) {
    return (
        opts.xanchor === 'right' ||
        (opts.xanchor === 'auto' && opts.x >= 2 / 3)
    );
};

exports.isCenterAnchor = function isCenterAnchor(opts) {
    return (
        opts.xanchor === 'center' ||
        (opts.xanchor === 'auto' && opts.x > 1 / 3 && opts.x < 2 / 3)
    );
};

exports.isBottomAnchor = function isBottomAnchor(opts) {
    return (
        opts.yanchor === 'bottom' ||
        (opts.yanchor === 'auto' && opts.y <= 1 / 3)
    );
};

exports.isMiddleAnchor = function isMiddleAnchor(opts) {
    return (
        opts.yanchor === 'middle' ||
        (opts.yanchor === 'auto' && opts.y > 1 / 3 && opts.y < 2 / 3)
    );
};

},{}],547:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var colorAttrs = require('../color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;


module.exports = {
    bgcolor: {
        valType: 'color',
        role: 'style',
        description: 'Sets the legend background color.'
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        role: 'style',
        description: 'Sets the color of the border enclosing the legend.'
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 0,
        role: 'style',
        description: 'Sets the width (in px) of the border enclosing the legend.'
    },
    font: extendFlat({}, fontAttrs, {
        description: 'Sets the font used to text the legend items.'
    }),
    orientation: {
        valType: 'enumerated',
        values: ['v', 'h'],
        dflt: 'v',
        role: 'info',
        description: 'Sets the orientation of the legend.'
    },
    traceorder: {
        valType: 'flaglist',
        flags: ['reversed', 'grouped'],
        extras: ['normal'],
        role: 'style',
        description: [
            'Determines the order at which the legend items are displayed.',

            'If *normal*, the items are displayed top-to-bottom in the same',
            'order as the input data.',

            'If *reversed*, the items are displayed in the opposite order',
            'as *normal*.',

            'If *grouped*, the items are displayed in groups',
            '(when a trace `legendgroup` is provided).',

            'if *grouped+reversed*, the items are displayed in the opposite order',
            'as *grouped*.'
        ].join(' ')
    },
    tracegroupgap: {
        valType: 'number',
        min: 0,
        dflt: 10,
        role: 'style',
        description: [
            'Sets the amount of vertical space (in px) between legend groups.'
        ].join(' ')
    },
    x: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 1.02,
        role: 'style',
        description: 'Sets the x position (in normalized coordinates) of the legend.'
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'left',
        role: 'info',
        description: [
            'Sets the legend\'s horizontal position anchor.',
            'This anchor binds the `x` position to the *left*, *center*',
            'or *right* of the legend.'
        ].join(' ')
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 1,
        role: 'style',
        description: 'Sets the y position (in normalized coordinates) of the legend.'
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'auto',
        role: 'info',
        description: [
            'Sets the legend\'s vertical position anchor',
            'This anchor binds the `y` position to the *top*, *middle*',
            'or *bottom* of the legend.'
        ].join(' ')
    }
};

},{"../../lib/extend":603,"../../plots/font_attributes":662,"../color/attributes":509}],548:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    scrollBarWidth: 4,
    scrollBarHeight: 20,
    scrollBarColor: '#808BA4',
    scrollBarMargin: 4
};

},{}],549:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');

var attributes = require('./attributes');
var basePlotLayoutAttributes = require('../../plots/layout_attributes');
var helpers = require('./helpers');


module.exports = function legendDefaults(layoutIn, layoutOut, fullData) {
    var containerIn = layoutIn.legend || {},
        containerOut = layoutOut.legend = {};

    var visibleTraces = 0,
        defaultOrder = 'normal',
        defaultX,
        defaultY,
        defaultXAnchor,
        defaultYAnchor;

    for(var i = 0; i < fullData.length; i++) {
        var trace = fullData[i];

        if(helpers.legendGetsTrace(trace)) {
            visibleTraces++;
            // always show the legend by default if there's a pie
            if(Registry.traceIs(trace, 'pie')) visibleTraces++;
        }

        if((Registry.traceIs(trace, 'bar') && layoutOut.barmode === 'stack') ||
                ['tonextx', 'tonexty'].indexOf(trace.fill) !== -1) {
            defaultOrder = helpers.isGrouped({traceorder: defaultOrder}) ?
                'grouped+reversed' : 'reversed';
        }

        if(trace.legendgroup !== undefined && trace.legendgroup !== '') {
            defaultOrder = helpers.isReversed({traceorder: defaultOrder}) ?
                'reversed+grouped' : 'grouped';
        }
    }

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, attributes, attr, dflt);
    }

    var showLegend = Lib.coerce(layoutIn, layoutOut,
        basePlotLayoutAttributes, 'showlegend', visibleTraces > 1);

    if(showLegend === false) return;

    coerce('bgcolor', layoutOut.paper_bgcolor);
    coerce('bordercolor');
    coerce('borderwidth');
    Lib.coerceFont(coerce, 'font', layoutOut.font);

    coerce('orientation');
    if(containerOut.orientation === 'h') {
        var xaxis = layoutIn.xaxis;
        if(xaxis && xaxis.rangeslider && xaxis.rangeslider.visible) {
            defaultX = 0;
            defaultXAnchor = 'left';
            defaultY = 1.1;
            defaultYAnchor = 'bottom';
        }
        else {
            defaultX = 0;
            defaultXAnchor = 'left';
            defaultY = -0.1;
            defaultYAnchor = 'top';
        }
    }

    coerce('traceorder', defaultOrder);
    if(helpers.isGrouped(layoutOut.legend)) coerce('tracegroupgap');

    coerce('x', defaultX);
    coerce('xanchor', defaultXAnchor);
    coerce('y', defaultY);
    coerce('yanchor', defaultYAnchor);
    Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);
};

},{"../../lib":610,"../../plots/layout_attributes":693,"../../registry":717,"./attributes":547,"./helpers":552}],550:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Registry = require('../../registry');
var dragElement = require('../dragelement');
var Drawing = require('../drawing');
var Color = require('../color');
var svgTextUtils = require('../../lib/svg_text_utils');

var constants = require('./constants');
var getLegendData = require('./get_legend_data');
var style = require('./style');
var helpers = require('./helpers');
var anchorUtils = require('./anchor_utils');


module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout;
    var clipId = 'legend' + fullLayout._uid;

    if(!fullLayout._infolayer || !gd.calcdata) return;

    var opts = fullLayout.legend,
        legendData = fullLayout.showlegend && getLegendData(gd.calcdata, opts),
        hiddenSlices = fullLayout.hiddenlabels || [];

    if(!fullLayout.showlegend || !legendData.length) {
        fullLayout._infolayer.selectAll('.legend').remove();
        fullLayout._topdefs.select('#' + clipId).remove();

        Plots.autoMargin(gd, 'legend');
        return;
    }

    var legend = fullLayout._infolayer.selectAll('g.legend')
        .data([0]);

    legend.enter().append('g')
        .attr({
            'class': 'legend',
            'pointer-events': 'all'
        });

    var clipPath = fullLayout._topdefs.selectAll('#' + clipId)
        .data([0]);

    clipPath.enter().append('clipPath')
        .attr('id', clipId)
        .append('rect');

    var bg = legend.selectAll('rect.bg')
        .data([0]);

    bg.enter().append('rect').attr({
        'class': 'bg',
        'shape-rendering': 'crispEdges'
    });

    bg.call(Color.stroke, opts.bordercolor);
    bg.call(Color.fill, opts.bgcolor);
    bg.style('stroke-width', opts.borderwidth + 'px');

    var scrollBox = legend.selectAll('g.scrollbox')
        .data([0]);

    scrollBox.enter().append('g')
        .attr('class', 'scrollbox');

    var scrollBar = legend.selectAll('rect.scrollbar')
        .data([0]);

    scrollBar.enter().append('rect')
        .attr({
            'class': 'scrollbar',
            'rx': 20,
            'ry': 2,
            'width': 0,
            'height': 0
        })
        .call(Color.fill, '#808BA4');

    var groups = scrollBox.selectAll('g.groups')
        .data(legendData);

    groups.enter().append('g')
        .attr('class', 'groups');

    groups.exit().remove();

    var traces = groups.selectAll('g.traces')
        .data(Lib.identity);

    traces.enter().append('g').attr('class', 'traces');
    traces.exit().remove();

    traces.call(style)
        .style('opacity', function(d) {
            var trace = d[0].trace;
            if(Registry.traceIs(trace, 'pie')) {
                return hiddenSlices.indexOf(d[0].label) !== -1 ? 0.5 : 1;
            } else {
                return trace.visible === 'legendonly' ? 0.5 : 1;
            }
        })
        .each(function() {
            d3.select(this)
                .call(drawTexts, gd)
                .call(setupTraceToggle, gd);
        });

    var firstRender = legend.enter().size() !== 0;
    if(firstRender) {
        computeLegendDimensions(gd, groups, traces);
        expandMargin(gd);
    }

    // Position and size the legend
    var lxMin = 0,
        lxMax = fullLayout.width,
        lyMin = 0,
        lyMax = fullLayout.height;

    computeLegendDimensions(gd, groups, traces);

    if(opts.height > lyMax) {
        // If the legend doesn't fit in the plot area,
        // do not expand the vertical margins.
        expandHorizontalMargin(gd);
    } else {
        expandMargin(gd);
    }

    // Scroll section must be executed after repositionLegend.
    // It requires the legend width, height, x and y to position the scrollbox
    // and these values are mutated in repositionLegend.
    var gs = fullLayout._size,
        lx = gs.l + gs.w * opts.x,
        ly = gs.t + gs.h * (1 - opts.y);

    if(anchorUtils.isRightAnchor(opts)) {
        lx -= opts.width;
    }
    else if(anchorUtils.isCenterAnchor(opts)) {
        lx -= opts.width / 2;
    }

    if(anchorUtils.isBottomAnchor(opts)) {
        ly -= opts.height;
    }
    else if(anchorUtils.isMiddleAnchor(opts)) {
        ly -= opts.height / 2;
    }

    // Make sure the legend left and right sides are visible
    var legendWidth = opts.width,
        legendWidthMax = gs.w;

    if(legendWidth > legendWidthMax) {
        lx = gs.l;
        legendWidth = legendWidthMax;
    }
    else {
        if(lx + legendWidth > lxMax) lx = lxMax - legendWidth;
        if(lx < lxMin) lx = lxMin;
        legendWidth = Math.min(lxMax - lx, opts.width);
    }

    // Make sure the legend top and bottom are visible
    // (legends with a scroll bar are not allowed to stretch beyond the extended
    // margins)
    var legendHeight = opts.height,
        legendHeightMax = gs.h;

    if(legendHeight > legendHeightMax) {
        ly = gs.t;
        legendHeight = legendHeightMax;
    }
    else {
        if(ly + legendHeight > lyMax) ly = lyMax - legendHeight;
        if(ly < lyMin) ly = lyMin;
        legendHeight = Math.min(lyMax - ly, opts.height);
    }

    // Set size and position of all the elements that make up a legend:
    // legend, background and border, scroll box and scroll bar
    Lib.setTranslate(legend, lx, ly);

    var scrollBarYMax = legendHeight -
            constants.scrollBarHeight -
            2 * constants.scrollBarMargin,
        scrollBoxYMax = opts.height - legendHeight,
        scrollBarY,
        scrollBoxY;

    if(opts.height <= legendHeight || gd._context.staticPlot) {
        // if scrollbar should not be shown.
        bg.attr({
            width: legendWidth - opts.borderwidth,
            height: legendHeight - opts.borderwidth,
            x: opts.borderwidth / 2,
            y: opts.borderwidth / 2
        });

        Lib.setTranslate(scrollBox, 0, 0);

        clipPath.select('rect').attr({
            width: legendWidth - 2 * opts.borderwidth,
            height: legendHeight - 2 * opts.borderwidth,
            x: opts.borderwidth,
            y: opts.borderwidth
        });

        scrollBox.call(Drawing.setClipUrl, clipId);
    }
    else {
        scrollBarY = constants.scrollBarMargin,
        scrollBoxY = scrollBox.attr('data-scroll') || 0;

        // increase the background and clip-path width
        // by the scrollbar width and margin
        bg.attr({
            width: legendWidth -
                2 * opts.borderwidth +
                constants.scrollBarWidth +
                constants.scrollBarMargin,
            height: legendHeight - opts.borderwidth,
            x: opts.borderwidth / 2,
            y: opts.borderwidth / 2
        });

        clipPath.select('rect').attr({
            width: legendWidth -
                2 * opts.borderwidth +
                constants.scrollBarWidth +
                constants.scrollBarMargin,
            height: legendHeight - 2 * opts.borderwidth,
            x: opts.borderwidth,
            y: opts.borderwidth - scrollBoxY
        });

        scrollBox.call(Drawing.setClipUrl, clipId);

        if(firstRender) scrollHandler(scrollBarY, scrollBoxY);

        legend.on('wheel', null);  // to be safe, remove previous listeners
        legend.on('wheel', function() {
            scrollBoxY = Lib.constrain(
                scrollBox.attr('data-scroll') -
                    d3.event.deltaY / scrollBarYMax * scrollBoxYMax,
                -scrollBoxYMax, 0);
            scrollBarY = constants.scrollBarMargin -
                scrollBoxY / scrollBoxYMax * scrollBarYMax;
            scrollHandler(scrollBarY, scrollBoxY);
            d3.event.preventDefault();
        });

        // to be safe, remove previous listeners
        scrollBar.on('.drag', null);
        scrollBox.on('.drag', null);

        var drag = d3.behavior.drag().on('drag', function() {
            scrollBarY = Lib.constrain(
                d3.event.y - constants.scrollBarHeight / 2,
                constants.scrollBarMargin,
                constants.scrollBarMargin + scrollBarYMax);
            scrollBoxY = - (scrollBarY - constants.scrollBarMargin) /
                scrollBarYMax * scrollBoxYMax;
            scrollHandler(scrollBarY, scrollBoxY);
        });

        scrollBar.call(drag);
        scrollBox.call(drag);
    }


    function scrollHandler(scrollBarY, scrollBoxY) {
        scrollBox
            .attr('data-scroll', scrollBoxY)
            .call(Lib.setTranslate, 0, scrollBoxY);

        scrollBar.call(
            Drawing.setRect,
            legendWidth,
            scrollBarY,
            constants.scrollBarWidth,
            constants.scrollBarHeight
        );
        clipPath.select('rect').attr({
            y: opts.borderwidth - scrollBoxY
        });
    }

    if(gd._context.editable) {
        var xf, yf, x0, y0;

        legend.classed('cursor-move', true);

        dragElement.init({
            element: legend.node(),
            prepFn: function() {
                var transform = Lib.getTranslate(legend);

                x0 = transform.x;
                y0 = transform.y;
            },
            moveFn: function(dx, dy) {
                var newX = x0 + dx,
                    newY = y0 + dy;

                Lib.setTranslate(legend, newX, newY);

                xf = dragElement.align(newX, 0, gs.l, gs.l + gs.w, opts.xanchor);
                yf = dragElement.align(newY, 0, gs.t + gs.h, gs.t, opts.yanchor);
            },
            doneFn: function(dragged) {
                if(dragged && xf !== undefined && yf !== undefined) {
                    Plotly.relayout(gd, {'legend.x': xf, 'legend.y': yf});
                }
            }
        });
    }
};

function drawTexts(g, gd) {
    var legendItem = g.data()[0][0],
        fullLayout = gd._fullLayout,
        trace = legendItem.trace,
        isPie = Registry.traceIs(trace, 'pie'),
        traceIndex = trace.index,
        name = isPie ? legendItem.label : trace.name;

    var text = g.selectAll('text.legendtext')
        .data([0]);
    text.enter().append('text').classed('legendtext', true);
    text.attr({
        x: 40,
        y: 0,
        'data-unformatted': name
    })
    .style('text-anchor', 'start')
    .classed('user-select-none', true)
    .call(Drawing.font, fullLayout.legend.font)
    .text(name);

    function textLayout(s) {
        svgTextUtils.convertToTspans(s, function() {
            s.selectAll('tspan.line').attr({x: s.attr('x')});
            g.call(computeTextDimensions, gd);
        });
    }

    if(gd._context.editable && !isPie) {
        text.call(svgTextUtils.makeEditable)
            .call(textLayout)
            .on('edit', function(text) {
                this.attr({'data-unformatted': text});

                this.text(text)
                    .call(textLayout);

                if(!this.text()) text = ' \u0020\u0020 ';

                var fullInput = legendItem.trace._fullInput || {},
                    astr;

                // N.B. this block isn't super clean,
                // is unfortunately untested at the moment,
                // and only works for for 'ohlc' and 'candlestick',
                // but should be generalized for other one-to-many transforms
                if(['ohlc', 'candlestick'].indexOf(fullInput.type) !== -1) {
                    var transforms = legendItem.trace.transforms,
                        direction = transforms[transforms.length - 1].direction;

                    astr = direction + '.legenditem.name';
                }
                else astr = 'name';

                Plotly.restyle(gd, astr, text, traceIndex);
            });
    }
    else text.call(textLayout);
}

function setupTraceToggle(g, gd) {
    var hiddenSlices = gd._fullLayout.hiddenlabels ?
        gd._fullLayout.hiddenlabels.slice() :
        [];

    var traceToggle = g.selectAll('rect')
        .data([0]);

    traceToggle.enter().append('rect')
        .classed('legendtoggle', true)
        .style('cursor', 'pointer')
        .attr('pointer-events', 'all')
        .call(Color.fill, 'rgba(0,0,0,0)');

    traceToggle.on('click', function() {
        if(gd._dragged) return;

        var legendItem = g.data()[0][0],
            fullData = gd._fullData,
            trace = legendItem.trace,
            legendgroup = trace.legendgroup,
            traceIndicesInGroup = [],
            tracei,
            newVisible;

        if(Registry.traceIs(trace, 'pie')) {
            var thisLabel = legendItem.label,
                thisLabelIndex = hiddenSlices.indexOf(thisLabel);

            if(thisLabelIndex === -1) hiddenSlices.push(thisLabel);
            else hiddenSlices.splice(thisLabelIndex, 1);

            Plotly.relayout(gd, 'hiddenlabels', hiddenSlices);
        } else {
            if(legendgroup === '') {
                traceIndicesInGroup = [trace.index];
            } else {
                for(var i = 0; i < fullData.length; i++) {
                    tracei = fullData[i];
                    if(tracei.legendgroup === legendgroup) {
                        traceIndicesInGroup.push(tracei.index);
                    }
                }
            }

            newVisible = trace.visible === true ? 'legendonly' : true;
            Plotly.restyle(gd, 'visible', newVisible, traceIndicesInGroup);
        }
    });
}

function computeTextDimensions(g, gd) {
    var legendItem = g.data()[0][0],
        mathjaxGroup = g.select('g[class*=math-group]'),
        opts = gd._fullLayout.legend,
        lineHeight = opts.font.size * 1.3,
        height,
        width;

    if(!legendItem.trace.showlegend) {
        g.remove();
        return;
    }

    if(mathjaxGroup.node()) {
        var mathjaxBB = Drawing.bBox(mathjaxGroup.node());

        height = mathjaxBB.height;
        width = mathjaxBB.width;

        Lib.setTranslate(mathjaxGroup, 0, (height / 4));
    }
    else {
        var text = g.selectAll('.legendtext'),
            textSpans = g.selectAll('.legendtext>tspan'),
            textLines = textSpans[0].length || 1;

        height = lineHeight * textLines;
        width = text.node() && Drawing.bBox(text.node()).width;

        // approximation to height offset to center the font
        // to avoid getBoundingClientRect
        var textY = lineHeight * (0.3 + (1 - textLines) / 2);
        text.attr('y', textY);
        textSpans.attr('y', textY);
    }

    height = Math.max(height, 16) + 3;

    legendItem.height = height;
    legendItem.width = width;
}

function computeLegendDimensions(gd, groups, traces) {
    var fullLayout = gd._fullLayout,
        opts = fullLayout.legend,
        borderwidth = opts.borderwidth,
        isGrouped = helpers.isGrouped(opts);

    if(helpers.isVertical(opts)) {
        if(isGrouped) {
            groups.each(function(d, i) {
                Lib.setTranslate(this, 0, i * opts.tracegroupgap);
            });
        }

        opts.width = 0;
        opts.height = 0;

        traces.each(function(d) {
            var legendItem = d[0],
                textHeight = legendItem.height,
                textWidth = legendItem.width;

            Lib.setTranslate(this,
                borderwidth,
                (5 + borderwidth + opts.height + textHeight / 2));

            opts.height += textHeight;
            opts.width = Math.max(opts.width, textWidth);
        });

        opts.width += 45 + borderwidth * 2;
        opts.height += 10 + borderwidth * 2;

        if(isGrouped) {
            opts.height += (opts._lgroupsLength - 1) * opts.tracegroupgap;
        }

        // make sure we're only getting full pixels
        opts.width = Math.ceil(opts.width);
        opts.height = Math.ceil(opts.height);

        traces.each(function(d) {
            var legendItem = d[0],
                bg = d3.select(this).select('.legendtoggle');

            bg.call(Drawing.setRect,
                0,
                -legendItem.height / 2,
                (gd._context.editable ? 0 : opts.width) + 40,
                legendItem.height
            );
        });
    }
    else if(isGrouped) {
        opts.width = 0;
        opts.height = 0;

        var groupXOffsets = [opts.width],
            groupData = groups.data();

        for(var i = 0, n = groupData.length; i < n; i++) {
            var textWidths = groupData[i].map(function(legendItemArray) {
                return legendItemArray[0].width;
            });

            var groupWidth = 40 + Math.max.apply(null, textWidths);

            opts.width += opts.tracegroupgap + groupWidth;

            groupXOffsets.push(opts.width);
        }

        groups.each(function(d, i) {
            Lib.setTranslate(this, groupXOffsets[i], 0);
        });

        groups.each(function() {
            var group = d3.select(this),
                groupTraces = group.selectAll('g.traces'),
                groupHeight = 0;

            groupTraces.each(function(d) {
                var legendItem = d[0],
                    textHeight = legendItem.height;

                Lib.setTranslate(this,
                    0,
                    (5 + borderwidth + groupHeight + textHeight / 2));

                groupHeight += textHeight;
            });

            opts.height = Math.max(opts.height, groupHeight);
        });

        opts.height += 10 + borderwidth * 2;
        opts.width += borderwidth * 2;

        // make sure we're only getting full pixels
        opts.width = Math.ceil(opts.width);
        opts.height = Math.ceil(opts.height);

        traces.each(function(d) {
            var legendItem = d[0],
                bg = d3.select(this).select('.legendtoggle');

            bg.call(Drawing.setRect,
                0,
                -legendItem.height / 2,
                (gd._context.editable ? 0 : opts.width),
                legendItem.height
            );
        });
    }
    else {
        opts.width = 0;
        opts.height = 0;
        var rowHeight = 0,
            maxTraceHeight = 0,
            maxTraceWidth = 0,
            offsetX = 0;

        // calculate largest width for traces and use for width of all legend items
        traces.each(function(d) {
            maxTraceWidth = Math.max(40 + d[0].width, maxTraceWidth);
        });

        traces.each(function(d) {
            var legendItem = d[0],
                traceWidth = maxTraceWidth,
                traceGap = opts.tracegroupgap || 5;

            if((borderwidth + offsetX + traceGap + traceWidth) > (fullLayout.width - (fullLayout.margin.r + fullLayout.margin.l))) {
                offsetX = 0;
                rowHeight = rowHeight + maxTraceHeight;
                opts.height = opts.height + maxTraceHeight;
                // reset for next row
                maxTraceHeight = 0;
            }

            Lib.setTranslate(this,
                (borderwidth + offsetX),
                (5 + borderwidth + legendItem.height / 2) + rowHeight);

            opts.width += traceGap + traceWidth;
            opts.height = Math.max(opts.height, legendItem.height);

            // keep track of tallest trace in group
            offsetX += traceGap + traceWidth;
            maxTraceHeight = Math.max(legendItem.height, maxTraceHeight);
        });

        opts.width += borderwidth * 2;
        opts.height += 10 + borderwidth * 2;

        // make sure we're only getting full pixels
        opts.width = Math.ceil(opts.width);
        opts.height = Math.ceil(opts.height);

        traces.each(function(d) {
            var legendItem = d[0],
                bg = d3.select(this).select('.legendtoggle');

            bg.call(Drawing.setRect,
                0,
                -legendItem.height / 2,
                (gd._context.editable ? 0 : opts.width),
                legendItem.height
            );
        });
    }
}

function expandMargin(gd) {
    var fullLayout = gd._fullLayout,
        opts = fullLayout.legend;

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(opts)) {
        xanchor = 'right';
    }
    else if(anchorUtils.isCenterAnchor(opts)) {
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(opts)) {
        yanchor = 'bottom';
    }
    else if(anchorUtils.isMiddleAnchor(opts)) {
        yanchor = 'middle';
    }

    // lastly check if the margin auto-expand has changed
    Plots.autoMargin(gd, 'legend', {
        x: opts.x,
        y: opts.y,
        l: opts.width * ({right: 1, center: 0.5}[xanchor] || 0),
        r: opts.width * ({left: 1, center: 0.5}[xanchor] || 0),
        b: opts.height * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: opts.height * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

function expandHorizontalMargin(gd) {
    var fullLayout = gd._fullLayout,
        opts = fullLayout.legend;

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(opts)) {
        xanchor = 'right';
    }
    else if(anchorUtils.isCenterAnchor(opts)) {
        xanchor = 'center';
    }

    // lastly check if the margin auto-expand has changed
    Plots.autoMargin(gd, 'legend', {
        x: opts.x,
        y: 0.5,
        l: opts.width * ({right: 1, center: 0.5}[xanchor] || 0),
        r: opts.width * ({left: 1, center: 0.5}[xanchor] || 0),
        b: 0,
        t: 0
    });
}

},{"../../lib":610,"../../lib/svg_text_utils":625,"../../plotly":637,"../../plots/plots":702,"../../registry":717,"../color":510,"../dragelement":531,"../drawing":533,"./anchor_utils":546,"./constants":548,"./get_legend_data":551,"./helpers":552,"./style":554,"d3":86}],551:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var helpers = require('./helpers');


module.exports = function getLegendData(calcdata, opts) {
    var lgroupToTraces = {},
        lgroups = [],
        hasOneNonBlankGroup = false,
        slicesShown = {},
        lgroupi = 0;

    var i, j;

    function addOneItem(legendGroup, legendItem) {
        // each '' legend group is treated as a separate group
        if(legendGroup === '' || !helpers.isGrouped(opts)) {
            var uniqueGroup = '~~i' + lgroupi; // TODO: check this against fullData legendgroups?

            lgroups.push(uniqueGroup);
            lgroupToTraces[uniqueGroup] = [[legendItem]];
            lgroupi++;
        }
        else if(lgroups.indexOf(legendGroup) === -1) {
            lgroups.push(legendGroup);
            hasOneNonBlankGroup = true;
            lgroupToTraces[legendGroup] = [[legendItem]];
        }
        else lgroupToTraces[legendGroup].push([legendItem]);
    }

    // build an { legendgroup: [cd0, cd0], ... } object
    for(i = 0; i < calcdata.length; i++) {
        var cd = calcdata[i],
            cd0 = cd[0],
            trace = cd0.trace,
            lgroup = trace.legendgroup;

        if(!helpers.legendGetsTrace(trace) || !trace.showlegend) continue;

        if(Registry.traceIs(trace, 'pie')) {
            if(!slicesShown[lgroup]) slicesShown[lgroup] = {};

            for(j = 0; j < cd.length; j++) {
                var labelj = cd[j].label;

                if(!slicesShown[lgroup][labelj]) {
                    addOneItem(lgroup, {
                        label: labelj,
                        color: cd[j].color,
                        i: cd[j].i,
                        trace: trace
                    });

                    slicesShown[lgroup][labelj] = true;
                }
            }
        }

        else addOneItem(lgroup, cd0);
    }

    // won't draw a legend in this case
    if(!lgroups.length) return [];

    // rearrange lgroupToTraces into a d3-friendly array of arrays
    var lgroupsLength = lgroups.length,
        ltraces,
        legendData;

    if(hasOneNonBlankGroup && helpers.isGrouped(opts)) {
        legendData = new Array(lgroupsLength);

        for(i = 0; i < lgroupsLength; i++) {
            ltraces = lgroupToTraces[lgroups[i]];
            legendData[i] = helpers.isReversed(opts) ? ltraces.reverse() : ltraces;
        }
    }
    else {
        // collapse all groups into one if all groups are blank
        legendData = [new Array(lgroupsLength)];

        for(i = 0; i < lgroupsLength; i++) {
            ltraces = lgroupToTraces[lgroups[i]][0];
            legendData[0][helpers.isReversed(opts) ? lgroupsLength - i - 1 : i] = ltraces;
        }
        lgroupsLength = 1;
    }

    // needed in repositionLegend
    opts._lgroupsLength = lgroupsLength;
    return legendData;
};

},{"../../registry":717,"./helpers":552}],552:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');


exports.legendGetsTrace = function legendGetsTrace(trace) {
    return trace.visible && Registry.traceIs(trace, 'showLegend');
};

exports.isGrouped = function isGrouped(legendLayout) {
    return (legendLayout.traceorder || '').indexOf('grouped') !== -1;
};

exports.isVertical = function isVertical(legendLayout) {
    return legendLayout.orientation !== 'h';
};

exports.isReversed = function isReversed(legendLayout) {
    return (legendLayout.traceorder || '').indexOf('reversed') !== -1;
};

},{"../../registry":717}],553:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    moduleType: 'component',
    name: 'legend',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    draw: require('./draw'),
    style: require('./style')
};

},{"./attributes":547,"./defaults":549,"./draw":550,"./style":554}],554:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Registry = require('../../registry');
var Lib = require('../../lib');
var Drawing = require('../drawing');
var Color = require('../color');

var subTypes = require('../../traces/scatter/subtypes');
var stylePie = require('../../traces/pie/style_one');


module.exports = function style(s) {
    s.each(function(d) {
        var traceGroup = d3.select(this);

        var fill = traceGroup
            .selectAll('g.legendfill')
                .data([d]);
        fill.enter().append('g')
            .classed('legendfill', true);

        var line = traceGroup
            .selectAll('g.legendlines')
                .data([d]);
        line.enter().append('g')
            .classed('legendlines', true);

        var symbol = traceGroup
            .selectAll('g.legendsymbols')
                .data([d]);
        symbol.enter().append('g')
            .classed('legendsymbols', true);
        symbol.style('opacity', d[0].trace.opacity);

        symbol.selectAll('g.legendpoints')
            .data([d])
          .enter().append('g')
            .classed('legendpoints', true);
    })
    .each(styleBars)
    .each(styleBoxes)
    .each(stylePies)
    .each(styleLines)
    .each(stylePoints);
};

function styleLines(d) {
    var trace = d[0].trace,
        showFill = trace.visible && trace.fill && trace.fill !== 'none',
        showLine = subTypes.hasLines(trace);

    var fill = d3.select(this).select('.legendfill').selectAll('path')
        .data(showFill ? [d] : []);
    fill.enter().append('path').classed('js-fill', true);
    fill.exit().remove();
    fill.attr('d', 'M5,0h30v6h-30z')
        .call(Drawing.fillGroupStyle);

    var line = d3.select(this).select('.legendlines').selectAll('path')
        .data(showLine ? [d] : []);
    line.enter().append('path').classed('js-line', true)
        .attr('d', 'M5,0h30');
    line.exit().remove();
    line.call(Drawing.lineGroupStyle);
}

function stylePoints(d) {
    var d0 = d[0],
        trace = d0.trace,
        showMarkers = subTypes.hasMarkers(trace),
        showText = subTypes.hasText(trace),
        showLines = subTypes.hasLines(trace);

    var dMod, tMod;

    // 'scatter3d' and 'scattergeo' don't use gd.calcdata yet;
    // use d0.trace to infer arrayOk attributes

    function boundVal(attrIn, arrayToValFn, bounds) {
        var valIn = Lib.nestedProperty(trace, attrIn).get(),
            valToBound = (Array.isArray(valIn) && arrayToValFn) ?
                arrayToValFn(valIn) : valIn;

        if(bounds) {
            if(valToBound < bounds[0]) return bounds[0];
            else if(valToBound > bounds[1]) return bounds[1];
        }
        return valToBound;
    }

    function pickFirst(array) { return array[0]; }

    // constrain text, markers, etc so they'll fit on the legend
    if(showMarkers || showText || showLines) {
        var dEdit = {},
            tEdit = {};

        if(showMarkers) {
            dEdit.mc = boundVal('marker.color', pickFirst);
            dEdit.mo = boundVal('marker.opacity', Lib.mean, [0.2, 1]);
            dEdit.ms = boundVal('marker.size', Lib.mean, [2, 16]);
            dEdit.mlc = boundVal('marker.line.color', pickFirst);
            dEdit.mlw = boundVal('marker.line.width', Lib.mean, [0, 5]);
            tEdit.marker = {
                sizeref: 1,
                sizemin: 1,
                sizemode: 'diameter'
            };
        }

        if(showLines) {
            tEdit.line = {
                width: boundVal('line.width', pickFirst, [0, 10])
            };
        }

        if(showText) {
            dEdit.tx = 'Aa';
            dEdit.tp = boundVal('textposition', pickFirst);
            dEdit.ts = 10;
            dEdit.tc = boundVal('textfont.color', pickFirst);
            dEdit.tf = boundVal('textfont.family', pickFirst);
        }

        dMod = [Lib.minExtend(d0, dEdit)];
        tMod = Lib.minExtend(trace, tEdit);
    }

    var ptgroup = d3.select(this).select('g.legendpoints');

    var pts = ptgroup.selectAll('path.scatterpts')
        .data(showMarkers ? dMod : []);
    pts.enter().append('path').classed('scatterpts', true)
        .attr('transform', 'translate(20,0)');
    pts.exit().remove();
    pts.call(Drawing.pointStyle, tMod);

    // 'mrc' is set in pointStyle and used in textPointStyle:
    // constrain it here
    if(showMarkers) dMod[0].mrc = 3;

    var txt = ptgroup.selectAll('g.pointtext')
        .data(showText ? dMod : []);
    txt.enter()
        .append('g').classed('pointtext', true)
            .append('text').attr('transform', 'translate(20,0)');
    txt.exit().remove();
    txt.selectAll('text').call(Drawing.textPointStyle, tMod);
}

function styleBars(d) {
    var trace = d[0].trace,
        marker = trace.marker || {},
        markerLine = marker.line || {},
        barpath = d3.select(this).select('g.legendpoints')
            .selectAll('path.legendbar')
            .data(Registry.traceIs(trace, 'bar') ? [d] : []);
    barpath.enter().append('path').classed('legendbar', true)
        .attr('d', 'M6,6H-6V-6H6Z')
        .attr('transform', 'translate(20,0)');
    barpath.exit().remove();
    barpath.each(function(d) {
        var w = (d.mlw + 1 || markerLine.width + 1) - 1,
            p = d3.select(this);

        p.style('stroke-width', w + 'px')
            .call(Color.fill, d.mc || marker.color);

        if(w) {
            p.call(Color.stroke, d.mlc || markerLine.color);
        }
    });
}

function styleBoxes(d) {
    var trace = d[0].trace,
        pts = d3.select(this).select('g.legendpoints')
            .selectAll('path.legendbox')
            .data(Registry.traceIs(trace, 'box') && trace.visible ? [d] : []);
    pts.enter().append('path').classed('legendbox', true)
        // if we want the median bar, prepend M6,0H-6
        .attr('d', 'M6,6H-6V-6H6Z')
        .attr('transform', 'translate(20,0)');
    pts.exit().remove();
    pts.each(function(d) {
        var w = (d.lw + 1 || trace.line.width + 1) - 1,
            p = d3.select(this);

        p.style('stroke-width', w + 'px')
            .call(Color.fill, d.fc || trace.fillcolor);

        if(w) {
            p.call(Color.stroke, d.lc || trace.line.color);
        }
    });
}

function stylePies(d) {
    var trace = d[0].trace,
        pts = d3.select(this).select('g.legendpoints')
            .selectAll('path.legendpie')
            .data(Registry.traceIs(trace, 'pie') && trace.visible ? [d] : []);
    pts.enter().append('path').classed('legendpie', true)
        .attr('d', 'M6,6H-6V-6H6Z')
        .attr('transform', 'translate(20,0)');
    pts.exit().remove();

    if(pts.size()) pts.call(stylePie, d[0], trace);
}

},{"../../lib":610,"../../registry":717,"../../traces/pie/style_one":828,"../../traces/scatter/subtypes":854,"../color":510,"../drawing":533,"d3":86}],555:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Axes = require('../../plots/cartesian/axes');
var Lib = require('../../lib');
var downloadImage = require('../../snapshot/download');
var Icons = require('../../../build/ploticon');


var modeBarButtons = module.exports = {};

/**
 * ModeBar buttons configuration
 *
 * @param {string} name
 *      name / id of the buttons (for tracking)
 * @param {string} title
 *      text that appears while hovering over the button,
 *      enter null, false or '' for no hover text
 * @param {string} icon
 *      svg icon object associated with the button
 *      can be linked to Plotly.Icons to use the default plotly icons
 * @param {string} [gravity]
 *      icon positioning
 * @param {function} click
 *      click handler associated with the button, a function of
 *      'gd' (the main graph object) and
 *      'ev' (the event object)
 * @param {string} [attr]
 *      attribute associated with button,
 *      use this with 'val' to keep track of the state
 * @param {*} [val]
 *      initial 'attr' value, can be a function of gd
 * @param {boolean} [toggle]
 *      is the button a toggle button?
 */

modeBarButtons.toImage = {
    name: 'toImage',
    title: 'Download plot as a png',
    icon: Icons.camera,
    click: function(gd) {
        var format = 'png';

        Lib.notifier('Taking snapshot - this may take a few seconds', 'long');

        if(Lib.isIE()) {
            Lib.notifier('IE only supports svg.  Changing format to svg.', 'long');
            format = 'svg';
        }

        downloadImage(gd, {'format': format})
          .then(function(filename) {
              Lib.notifier('Snapshot succeeded - ' + filename, 'long');
          })
          .catch(function() {
              Lib.notifier('Sorry there was a problem downloading your snapshot!', 'long');
          });
    }
};

modeBarButtons.sendDataToCloud = {
    name: 'sendDataToCloud',
    title: 'Save and edit plot in cloud',
    icon: Icons.disk,
    click: function(gd) {
        Plots.sendDataToCloud(gd);
    }
};

modeBarButtons.zoom2d = {
    name: 'zoom2d',
    title: 'Zoom',
    attr: 'dragmode',
    val: 'zoom',
    icon: Icons.zoombox,
    click: handleCartesian
};

modeBarButtons.pan2d = {
    name: 'pan2d',
    title: 'Pan',
    attr: 'dragmode',
    val: 'pan',
    icon: Icons.pan,
    click: handleCartesian
};

modeBarButtons.select2d = {
    name: 'select2d',
    title: 'Box Select',
    attr: 'dragmode',
    val: 'select',
    icon: Icons.selectbox,
    click: handleCartesian
};

modeBarButtons.lasso2d = {
    name: 'lasso2d',
    title: 'Lasso Select',
    attr: 'dragmode',
    val: 'lasso',
    icon: Icons.lasso,
    click: handleCartesian
};

modeBarButtons.zoomIn2d = {
    name: 'zoomIn2d',
    title: 'Zoom in',
    attr: 'zoom',
    val: 'in',
    icon: Icons.zoom_plus,
    click: handleCartesian
};

modeBarButtons.zoomOut2d = {
    name: 'zoomOut2d',
    title: 'Zoom out',
    attr: 'zoom',
    val: 'out',
    icon: Icons.zoom_minus,
    click: handleCartesian
};

modeBarButtons.autoScale2d = {
    name: 'autoScale2d',
    title: 'Autoscale',
    attr: 'zoom',
    val: 'auto',
    icon: Icons.autoscale,
    click: handleCartesian
};

modeBarButtons.resetScale2d = {
    name: 'resetScale2d',
    title: 'Reset axes',
    attr: 'zoom',
    val: 'reset',
    icon: Icons.home,
    click: handleCartesian
};

modeBarButtons.hoverClosestCartesian = {
    name: 'hoverClosestCartesian',
    title: 'Show closest data on hover',
    attr: 'hovermode',
    val: 'closest',
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: handleCartesian
};

modeBarButtons.hoverCompareCartesian = {
    name: 'hoverCompareCartesian',
    title: 'Compare data on hover',
    attr: 'hovermode',
    val: function(gd) {
        return gd._fullLayout._isHoriz ? 'y' : 'x';
    },
    icon: Icons.tooltip_compare,
    gravity: 'ne',
    click: handleCartesian
};

function handleCartesian(gd, ev) {
    var button = ev.currentTarget,
        astr = button.getAttribute('data-attr'),
        val = button.getAttribute('data-val') || true,
        fullLayout = gd._fullLayout,
        aobj = {};

    if(astr === 'zoom') {
        var mag = (val === 'in') ? 0.5 : 2,
            r0 = (1 + mag) / 2,
            r1 = (1 - mag) / 2,
            axList = Axes.list(gd, null, true);

        var ax, axName;

        for(var i = 0; i < axList.length; i++) {
            ax = axList[i];

            if(!ax.fixedrange) {
                axName = ax._name;
                if(val === 'auto') aobj[axName + '.autorange'] = true;
                else if(val === 'reset') {
                    if(ax._rangeInitial === undefined) {
                        aobj[axName + '.autorange'] = true;
                    }
                    else {
                        var rangeInitial = ax._rangeInitial.slice();
                        aobj[axName + '.range[0]'] = rangeInitial[0];
                        aobj[axName + '.range[1]'] = rangeInitial[1];
                    }
                }
                else {
                    var rangeNow = [
                        ax.r2l(ax.range[0]),
                        ax.r2l(ax.range[1]),
                    ];

                    var rangeNew = [
                        r0 * rangeNow[0] + r1 * rangeNow[1],
                        r0 * rangeNow[1] + r1 * rangeNow[0]
                    ];

                    aobj[axName + '.range[0]'] = ax.l2r(rangeNew[0]);
                    aobj[axName + '.range[1]'] = ax.l2r(rangeNew[1]);
                }
            }
        }
    }
    else {
        // if ALL traces have orientation 'h', 'hovermode': 'x' otherwise: 'y'
        if(astr === 'hovermode' && (val === 'x' || val === 'y')) {
            val = fullLayout._isHoriz ? 'y' : 'x';
            button.setAttribute('data-val', val);
        }

        aobj[astr] = val;
    }

    Plotly.relayout(gd, aobj);
}

modeBarButtons.zoom3d = {
    name: 'zoom3d',
    title: 'Zoom',
    attr: 'scene.dragmode',
    val: 'zoom',
    icon: Icons.zoombox,
    click: handleDrag3d
};

modeBarButtons.pan3d = {
    name: 'pan3d',
    title: 'Pan',
    attr: 'scene.dragmode',
    val: 'pan',
    icon: Icons.pan,
    click: handleDrag3d
};

modeBarButtons.orbitRotation = {
    name: 'orbitRotation',
    title: 'orbital rotation',
    attr: 'scene.dragmode',
    val: 'orbit',
    icon: Icons['3d_rotate'],
    click: handleDrag3d
};

modeBarButtons.tableRotation = {
    name: 'tableRotation',
    title: 'turntable rotation',
    attr: 'scene.dragmode',
    val: 'turntable',
    icon: Icons['z-axis'],
    click: handleDrag3d
};

function handleDrag3d(gd, ev) {
    var button = ev.currentTarget,
        attr = button.getAttribute('data-attr'),
        val = button.getAttribute('data-val') || true,
        fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d'),
        layoutUpdate = {};

    var parts = attr.split('.');

    for(var i = 0; i < sceneIds.length; i++) {
        layoutUpdate[sceneIds[i] + '.' + parts[1]] = val;
    }

    Plotly.relayout(gd, layoutUpdate);
}

modeBarButtons.resetCameraDefault3d = {
    name: 'resetCameraDefault3d',
    title: 'Reset camera to default',
    attr: 'resetDefault',
    icon: Icons.home,
    click: handleCamera3d
};

modeBarButtons.resetCameraLastSave3d = {
    name: 'resetCameraLastSave3d',
    title: 'Reset camera to last save',
    attr: 'resetLastSave',
    icon: Icons.movie,
    click: handleCamera3d
};

function handleCamera3d(gd, ev) {
    var button = ev.currentTarget,
        attr = button.getAttribute('data-attr'),
        fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d');

    for(var i = 0; i < sceneIds.length; i++) {
        var sceneId = sceneIds[i],
            fullSceneLayout = fullLayout[sceneId],
            scene = fullSceneLayout._scene;

        if(attr === 'resetDefault') scene.setCameraToDefault();
        else if(attr === 'resetLastSave') {
            // This handler looks in the un-updated fullLayout.scene.camera object to reset the camera
            // to the last saved position.
            scene.setCamera(fullSceneLayout.camera);
        }
    }
}

modeBarButtons.hoverClosest3d = {
    name: 'hoverClosest3d',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: handleHover3d
};

function handleHover3d(gd, ev) {
    var button = ev.currentTarget,
        val = button._previousVal || false,
        layout = gd.layout,
        fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d');

    var axes = ['xaxis', 'yaxis', 'zaxis'],
        spikeAttrs = ['showspikes', 'spikesides', 'spikethickness', 'spikecolor'];

    // initialize 'current spike' object to be stored in the DOM
    var currentSpikes = {},
        axisSpikes = {},
        layoutUpdate = {};

    if(val) {
        layoutUpdate = Lib.extendDeep(layout, val);
        button._previousVal = null;
    }
    else {
        layoutUpdate = {
            'allaxes.showspikes': false
        };

        for(var i = 0; i < sceneIds.length; i++) {
            var sceneId = sceneIds[i],
                sceneLayout = fullLayout[sceneId],
                sceneSpikes = currentSpikes[sceneId] = {};

            sceneSpikes.hovermode = sceneLayout.hovermode;
            layoutUpdate[sceneId + '.hovermode'] = false;

            // copy all the current spike attrs
            for(var j = 0; j < 3; j++) {
                var axis = axes[j];
                axisSpikes = sceneSpikes[axis] = {};

                for(var k = 0; k < spikeAttrs.length; k++) {
                    var spikeAttr = spikeAttrs[k];
                    axisSpikes[spikeAttr] = sceneLayout[axis][spikeAttr];
                }
            }
        }

        button._previousVal = Lib.extendDeep({}, currentSpikes);
    }

    Plotly.relayout(gd, layoutUpdate);
}

modeBarButtons.zoomInGeo = {
    name: 'zoomInGeo',
    title: 'Zoom in',
    attr: 'zoom',
    val: 'in',
    icon: Icons.zoom_plus,
    click: handleGeo
};

modeBarButtons.zoomOutGeo = {
    name: 'zoomOutGeo',
    title: 'Zoom out',
    attr: 'zoom',
    val: 'out',
    icon: Icons.zoom_minus,
    click: handleGeo
};

modeBarButtons.resetGeo = {
    name: 'resetGeo',
    title: 'Reset',
    attr: 'reset',
    val: null,
    icon: Icons.autoscale,
    click: handleGeo
};

modeBarButtons.hoverClosestGeo = {
    name: 'hoverClosestGeo',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: toggleHover
};

function handleGeo(gd, ev) {
    var button = ev.currentTarget,
        attr = button.getAttribute('data-attr'),
        val = button.getAttribute('data-val') || true,
        fullLayout = gd._fullLayout,
        geoIds = Plots.getSubplotIds(fullLayout, 'geo');

    for(var i = 0; i < geoIds.length; i++) {
        var geo = fullLayout[geoIds[i]]._subplot;

        if(attr === 'zoom') {
            var scale = geo.projection.scale();
            var newScale = (val === 'in') ? 2 * scale : 0.5 * scale;
            geo.projection.scale(newScale);
            geo.zoom.scale(newScale);
            geo.render();
        }
        else if(attr === 'reset') geo.zoomReset();
    }
}

modeBarButtons.hoverClosestGl2d = {
    name: 'hoverClosestGl2d',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: toggleHover
};

modeBarButtons.hoverClosestPie = {
    name: 'hoverClosestPie',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: 'closest',
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: toggleHover
};

function toggleHover(gd) {
    var fullLayout = gd._fullLayout;

    var onHoverVal;
    if(fullLayout._has('cartesian')) {
        onHoverVal = fullLayout._isHoriz ? 'y' : 'x';
    }
    else onHoverVal = 'closest';

    var newHover = gd._fullLayout.hovermode ? false : onHoverVal;

    Plotly.relayout(gd, 'hovermode', newHover);
}

// buttons when more then one plot types are present

modeBarButtons.toggleHover = {
    name: 'toggleHover',
    title: 'Toggle show closest data on hover',
    attr: 'hovermode',
    val: null,
    toggle: true,
    icon: Icons.tooltip_basic,
    gravity: 'ne',
    click: function(gd, ev) {
        toggleHover(gd);

        // the 3d hovermode update must come
        // last so that layout.hovermode update does not
        // override scene?.hovermode?.layout.
        handleHover3d(gd, ev);
    }
};

modeBarButtons.resetViews = {
    name: 'resetViews',
    title: 'Reset views',
    icon: Icons.home,
    click: function(gd, ev) {
        var button = ev.currentTarget;

        button.setAttribute('data-attr', 'zoom');
        button.setAttribute('data-val', 'reset');
        handleCartesian(gd, ev);

        button.setAttribute('data-attr', 'resetLastSave');
        handleCamera3d(gd, ev);

        // N.B handleCamera3d also triggers a replot for
        // geo subplots.
    }
};

},{"../../../build/ploticon":472,"../../lib":610,"../../plotly":637,"../../plots/cartesian/axes":642,"../../plots/plots":702,"../../snapshot/download":719}],556:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.manage = require('./manage');

},{"./manage":557}],557:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Axes = require('../../plots/cartesian/axes');
var scatterSubTypes = require('../../traces/scatter/subtypes');

var createModeBar = require('./modebar');
var modeBarButtons = require('./buttons');

/**
 * ModeBar wrapper around 'create' and 'update',
 * chooses buttons to pass to ModeBar constructor based on
 * plot type and plot config.
 *
 * @param {object} gd main plot object
 *
 */
module.exports = function manageModeBar(gd) {
    var fullLayout = gd._fullLayout,
        context = gd._context,
        modeBar = fullLayout._modeBar;

    if(!context.displayModeBar) {
        if(modeBar) {
            modeBar.destroy();
            delete fullLayout._modeBar;
        }
        return;
    }

    if(!Array.isArray(context.modeBarButtonsToRemove)) {
        throw new Error([
            '*modeBarButtonsToRemove* configuration options',
            'must be an array.'
        ].join(' '));
    }

    if(!Array.isArray(context.modeBarButtonsToAdd)) {
        throw new Error([
            '*modeBarButtonsToAdd* configuration options',
            'must be an array.'
        ].join(' '));
    }

    var customButtons = context.modeBarButtons;
    var buttonGroups;

    if(Array.isArray(customButtons) && customButtons.length) {
        buttonGroups = fillCustomButton(customButtons);
    }
    else {
        buttonGroups = getButtonGroups(
            gd,
            context.modeBarButtonsToRemove,
            context.modeBarButtonsToAdd
        );
    }

    if(modeBar) modeBar.update(gd, buttonGroups);
    else fullLayout._modeBar = createModeBar(gd, buttonGroups);
};

// logic behind which buttons are displayed by default
function getButtonGroups(gd, buttonsToRemove, buttonsToAdd) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData;

    var hasCartesian = fullLayout._has('cartesian'),
        hasGL3D = fullLayout._has('gl3d'),
        hasGeo = fullLayout._has('geo'),
        hasPie = fullLayout._has('pie'),
        hasGL2D = fullLayout._has('gl2d'),
        hasTernary = fullLayout._has('ternary');

    var groups = [];

    function addGroup(newGroup) {
        var out = [];

        for(var i = 0; i < newGroup.length; i++) {
            var button = newGroup[i];
            if(buttonsToRemove.indexOf(button) !== -1) continue;
            out.push(modeBarButtons[button]);
        }

        groups.push(out);
    }

    // buttons common to all plot types
    addGroup(['toImage', 'sendDataToCloud']);

    // graphs with more than one plot types get 'union buttons'
    // which reset the view or toggle hover labels across all subplots.
    if((hasCartesian || hasGL2D || hasPie || hasTernary) + hasGeo + hasGL3D > 1) {
        addGroup(['resetViews', 'toggleHover']);
        return appendButtonsToGroups(groups, buttonsToAdd);
    }

    if(hasGL3D) {
        addGroup(['zoom3d', 'pan3d', 'orbitRotation', 'tableRotation']);
        addGroup(['resetCameraDefault3d', 'resetCameraLastSave3d']);
        addGroup(['hoverClosest3d']);
    }

    if(hasGeo) {
        addGroup(['zoomInGeo', 'zoomOutGeo', 'resetGeo']);
        addGroup(['hoverClosestGeo']);
    }

    var allAxesFixed = areAllAxesFixed(fullLayout),
        dragModeGroup = [];

    if(((hasCartesian || hasGL2D) && !allAxesFixed) || hasTernary) {
        dragModeGroup = ['zoom2d', 'pan2d'];
    }
    if((hasCartesian || hasTernary) && isSelectable(fullData)) {
        dragModeGroup.push('select2d');
        dragModeGroup.push('lasso2d');
    }
    if(dragModeGroup.length) addGroup(dragModeGroup);

    if((hasCartesian || hasGL2D) && !allAxesFixed && !hasTernary) {
        addGroup(['zoomIn2d', 'zoomOut2d', 'autoScale2d', 'resetScale2d']);
    }

    if(hasCartesian && hasPie) {
        addGroup(['toggleHover']);
    }
    else if(hasGL2D) {
        addGroup(['hoverClosestGl2d']);
    }
    else if(hasCartesian) {
        addGroup(['hoverClosestCartesian', 'hoverCompareCartesian']);
    }
    else if(hasPie) {
        addGroup(['hoverClosestPie']);
    }

    return appendButtonsToGroups(groups, buttonsToAdd);
}

function areAllAxesFixed(fullLayout) {
    var axList = Axes.list({_fullLayout: fullLayout}, null, true);
    var allFixed = true;

    for(var i = 0; i < axList.length; i++) {
        if(!axList[i].fixedrange) {
            allFixed = false;
            break;
        }
    }

    return allFixed;
}

// look for traces that support selection
// to be updated as we add more selectPoints handlers
function isSelectable(fullData) {
    var selectable = false;

    for(var i = 0; i < fullData.length; i++) {
        if(selectable) break;

        var trace = fullData[i];

        if(!trace._module || !trace._module.selectPoints) continue;

        if(trace.type === 'scatter' || trace.type === 'scatterternary') {
            if(scatterSubTypes.hasMarkers(trace) || scatterSubTypes.hasText(trace)) {
                selectable = true;
            }
        }
        // assume that in general if the trace module has selectPoints,
        // then it's selectable. Scatter is an exception to this because it must
        // have markers or text, not just be a scatter type.
        else selectable = true;
    }

    return selectable;
}

function appendButtonsToGroups(groups, buttons) {
    if(buttons.length) {
        if(Array.isArray(buttons[0])) {
            for(var i = 0; i < buttons.length; i++) {
                groups.push(buttons[i]);
            }
        }
        else groups.push(buttons);
    }

    return groups;
}

// fill in custom buttons referring to default mode bar buttons
function fillCustomButton(customButtons) {
    for(var i = 0; i < customButtons.length; i++) {
        var buttonGroup = customButtons[i];

        for(var j = 0; j < buttonGroup.length; j++) {
            var button = buttonGroup[j];

            if(typeof button === 'string') {
                if(modeBarButtons[button] !== undefined) {
                    customButtons[i][j] = modeBarButtons[button];
                }
                else {
                    throw new Error([
                        '*modeBarButtons* configuration options',
                        'invalid button name'
                    ].join(' '));
                }
            }
        }
    }

    return customButtons;
}

},{"../../plots/cartesian/axes":642,"../../traces/scatter/subtypes":854,"./buttons":555,"./modebar":558}],558:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Lib = require('../../lib');
var Icons = require('../../../build/ploticon');


/**
 * UI controller for interactive plots
 * @Class
 * @Param {object} opts
 * @Param {object} opts.buttons    nested arrays of grouped buttons config objects
 * @Param {object} opts.container  container div to append modeBar
 * @Param {object} opts.graphInfo  primary plot object containing data and layout
 */
function ModeBar(opts) {
    this.container = opts.container;
    this.element = document.createElement('div');

    this.update(opts.graphInfo, opts.buttons);

    this.container.appendChild(this.element);
}

var proto = ModeBar.prototype;

/**
 * Update modeBar (buttons and logo)
 *
 * @param {object} graphInfo  primary plot object containing data and layout
 * @param {array of arrays} buttons nested arrays of grouped buttons to initialize
 *
 */
proto.update = function(graphInfo, buttons) {
    this.graphInfo = graphInfo;

    var context = this.graphInfo._context;

    if(context.displayModeBar === 'hover') {
        this.element.className = 'modebar modebar--hover';
    }
    else this.element.className = 'modebar';

    // if buttons or logo have changed, redraw modebar interior
    var needsNewButtons = !this.hasButtons(buttons),
        needsNewLogo = (this.hasLogo !== context.displaylogo);

    if(needsNewButtons || needsNewLogo) {
        this.removeAllButtons();

        this.updateButtons(buttons);

        if(context.displaylogo) {
            this.element.appendChild(this.getLogo());
            this.hasLogo = true;
        }
    }

    this.updateActiveButton();
};

proto.updateButtons = function(buttons) {
    var _this = this;

    this.buttons = buttons;
    this.buttonElements = [];
    this.buttonsNames = [];

    this.buttons.forEach(function(buttonGroup) {
        var group = _this.createGroup();

        buttonGroup.forEach(function(buttonConfig) {
            var buttonName = buttonConfig.name;
            if(!buttonName) {
                throw new Error('must provide button \'name\' in button config');
            }
            if(_this.buttonsNames.indexOf(buttonName) !== -1) {
                throw new Error('button name \'' + buttonName + '\' is taken');
            }
            _this.buttonsNames.push(buttonName);

            var button = _this.createButton(buttonConfig);
            _this.buttonElements.push(button);
            group.appendChild(button);
        });

        _this.element.appendChild(group);
    });
};

/**
 * Empty div for containing a group of buttons
 * @Return {HTMLelement}
 */
proto.createGroup = function() {
    var group = document.createElement('div');
    group.className = 'modebar-group';

    return group;
};

/**
 * Create a new button div and set constant and configurable attributes
 * @Param {object} config (see ./buttons.js for more info)
 * @Return {HTMLelement}
 */
proto.createButton = function(config) {
    var _this = this,
        button = document.createElement('a');

    button.setAttribute('rel', 'tooltip');
    button.className = 'modebar-btn';

    var title = config.title;
    if(title === undefined) title = config.name;
    if(title || title === 0) button.setAttribute('data-title', title);

    if(config.attr !== undefined) button.setAttribute('data-attr', config.attr);

    var val = config.val;
    if(val !== undefined) {
        if(typeof val === 'function') val = val(this.graphInfo);
        button.setAttribute('data-val', val);
    }

    var click = config.click;
    if(typeof click !== 'function') {
        throw new Error('must provide button \'click\' function in button config');
    }
    else {
        button.addEventListener('click', function(ev) {
            config.click(_this.graphInfo, ev);

            // only needed for 'hoverClosestGeo' which does not call relayout
            _this.updateActiveButton(ev.currentTarget);
        });
    }

    button.setAttribute('data-toggle', config.toggle || false);
    if(config.toggle) button.classList.add('active');

    button.appendChild(this.createIcon(config.icon || Icons.question));
    button.setAttribute('data-gravity', config.gravity || 'n');

    return button;
};

/**
 * Add an icon to a button
 * @Param {object} thisIcon
 * @Param {number} thisIcon.width
 * @Param {string} thisIcon.path
 * @Return {HTMLelement}
 */
proto.createIcon = function(thisIcon) {
    var iconHeight = thisIcon.ascent - thisIcon.descent,
        svgNS = 'http://www.w3.org/2000/svg',
        icon = document.createElementNS(svgNS, 'svg'),
        path = document.createElementNS(svgNS, 'path');

    icon.setAttribute('height', '1em');
    icon.setAttribute('width', (thisIcon.width / iconHeight) + 'em');
    icon.setAttribute('viewBox', [0, 0, thisIcon.width, iconHeight].join(' '));

    path.setAttribute('d', thisIcon.path);
    path.setAttribute('transform', 'matrix(1 0 0 -1 0 ' + thisIcon.ascent + ')');
    icon.appendChild(path);

    return icon;
};

/**
 * Updates active button with attribute specified in layout
 * @Param {object} graphInfo plot object containing data and layout
 * @Return {HTMLelement}
 */
proto.updateActiveButton = function(buttonClicked) {
    var fullLayout = this.graphInfo._fullLayout,
        dataAttrClicked = (buttonClicked !== undefined) ?
            buttonClicked.getAttribute('data-attr') :
            null;

    this.buttonElements.forEach(function(button) {
        var thisval = button.getAttribute('data-val') || true,
            dataAttr = button.getAttribute('data-attr'),
            isToggleButton = (button.getAttribute('data-toggle') === 'true'),
            button3 = d3.select(button);

        // Use 'data-toggle' and 'buttonClicked' to toggle buttons
        // that have no one-to-one equivalent in fullLayout
        if(isToggleButton) {
            if(dataAttr === dataAttrClicked) {
                button3.classed('active', !button3.classed('active'));
            }
        }
        else {
            var val = (dataAttr === null) ?
                dataAttr :
                Lib.nestedProperty(fullLayout, dataAttr).get();

            button3.classed('active', val === thisval);
        }

    });
};

/**
 * Check if modeBar is configured as button configuration argument
 *
 * @Param {object} buttons 2d array of grouped button config objects
 * @Return {boolean}
 */
proto.hasButtons = function(buttons) {
    var currentButtons = this.buttons;

    if(!currentButtons) return false;

    if(buttons.length !== currentButtons.length) return false;

    for(var i = 0; i < buttons.length; ++i) {
        if(buttons[i].length !== currentButtons[i].length) return false;
        for(var j = 0; j < buttons[i].length; j++) {
            if(buttons[i][j].name !== currentButtons[i][j].name) return false;
        }
    }

    return true;
};

/**
 * @return {HTMLDivElement} The logo image wrapped in a group
 */
proto.getLogo = function() {
    var group = this.createGroup(),
        a = document.createElement('a');

    a.href = 'https://plot.ly/';
    a.target = '_blank';
    a.setAttribute('data-title', 'Produced with Plotly');
    a.className = 'modebar-btn plotlyjsicon modebar-btn--logo';

    a.appendChild(this.createIcon(Icons.plotlylogo));

    group.appendChild(a);
    return group;
};

proto.removeAllButtons = function() {
    while(this.element.firstChild) {
        this.element.removeChild(this.element.firstChild);
    }

    this.hasLogo = false;
};

proto.destroy = function() {
    Lib.removeElement(this.container.querySelector('.modebar'));
};

function createModeBar(gd, buttons) {
    var fullLayout = gd._fullLayout;

    var modeBar = new ModeBar({
        graphInfo: gd,
        container: fullLayout._paperdiv.node(),
        buttons: buttons
    });

    if(fullLayout._privateplot) {
        d3.select(modeBar.element).append('span')
            .classed('badge-private float--left', true)
            .text('PRIVATE');
    }

    return modeBar;
}

module.exports = createModeBar;

},{"../../../build/ploticon":472,"../../lib":610,"d3":86}],559:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var colorAttrs = require('../color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var buttonAttrs = require('./button_attributes');

buttonAttrs = extendFlat(buttonAttrs, {
    _isLinkedToArray: 'button',

    description: [
        'Sets the specifications for each buttons.',
        'By default, a range selector comes with no buttons.'
    ].join(' ')
});

module.exports = {
    visible: {
        valType: 'boolean',
        role: 'info',
        description: [
            'Determines whether or not this range selector is visible.',
            'Note that range selectors are only available for x axes of',
            '`type` set to or auto-typed to *date*.'
        ].join(' ')
    },

    buttons: buttonAttrs,

    x: {
        valType: 'number',
        min: -2,
        max: 3,
        role: 'style',
        description: 'Sets the x position (in normalized coordinates) of the range selector.'
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'left',
        role: 'info',
        description: [
            'Sets the range selector\'s horizontal position anchor.',
            'This anchor binds the `x` position to the *left*, *center*',
            'or *right* of the range selector.'
        ].join(' ')
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        role: 'style',
        description: 'Sets the y position (in normalized coordinates) of the range selector.'
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'bottom',
        role: 'info',
        description: [
            'Sets the range selector\'s vertical position anchor',
            'This anchor binds the `y` position to the *top*, *middle*',
            'or *bottom* of the range selector.'
        ].join(' ')
    },

    font: extendFlat({}, fontAttrs, {
        description: 'Sets the font of the range selector button text.'
    }),

    bgcolor: {
        valType: 'color',
        dflt: colorAttrs.lightLine,
        role: 'style',
        description: 'Sets the background color of the range selector buttons.'
    },
    activecolor: {
        valType: 'color',
        role: 'style',
        description: 'Sets the background color of the active range selector button.'
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        role: 'style',
        description: 'Sets the color of the border enclosing the range selector.'
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 0,
        role: 'style',
        description: 'Sets the width (in px) of the border enclosing the range selector.'
    }
};

},{"../../lib/extend":603,"../../plots/font_attributes":662,"../color/attributes":509,"./button_attributes":560}],560:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    step: {
        valType: 'enumerated',
        role: 'info',
        values: ['month', 'year', 'day', 'hour', 'minute', 'second', 'all'],
        dflt: 'month',
        description: [
            'The unit of measurement that the `count` value will set the range by.'
        ].join(' ')
    },
    stepmode: {
        valType: 'enumerated',
        role: 'info',
        values: ['backward', 'todate'],
        dflt: 'backward',
        description: [
            'Sets the range update mode.',
            'If *backward*, the range update shifts the start of range',
            'back *count* times *step* milliseconds.',
            'If *todate*, the range update shifts the start of range',
            'back to the first timestamp from *count* times',
            '*step* milliseconds back.',
            'For example, with `step` set to *year* and `count` set to *1*',
            'the range update shifts the start of the range back to',
            'January 01 of the current year.',
            'Month and year *todate* are currently available only',
            'for the built-in (Gregorian) calendar.'
        ].join(' ')
    },
    count: {
        valType: 'number',
        role: 'info',
        min: 0,
        dflt: 1,
        description: [
            'Sets the number of steps to take to update the range.',
            'Use with `step` to specify the update interval.'
        ].join(' ')
    },
    label: {
        valType: 'string',
        role: 'info',
        description: 'Sets the text label to appear on the button.'
    }
};

},{}],561:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {

    // 'y' position pad above counter axis domain
    yPad: 0.02,

    // minimum button width (regardless of text size)
    minButtonWidth: 30,

    // buttons rect radii
    rx: 3,
    ry: 3,

    // light fraction used to compute the 'activecolor' default
    lightAmount: 25,
    darkAmount: 10
};

},{}],562:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Color = require('../color');

var attributes = require('./attributes');
var buttonAttrs = require('./button_attributes');
var constants = require('./constants');


module.exports = function handleDefaults(containerIn, containerOut, layout, counterAxes, calendar) {
    var selectorIn = containerIn.rangeselector || {},
        selectorOut = containerOut.rangeselector = {};

    function coerce(attr, dflt) {
        return Lib.coerce(selectorIn, selectorOut, attributes, attr, dflt);
    }

    var buttons = buttonsDefaults(selectorIn, selectorOut, calendar);

    var visible = coerce('visible', buttons.length > 0);
    if(!visible) return;

    var posDflt = getPosDflt(containerOut, layout, counterAxes);
    coerce('x', posDflt[0]);
    coerce('y', posDflt[1]);
    Lib.noneOrAll(containerIn, containerOut, ['x', 'y']);

    coerce('xanchor');
    coerce('yanchor');

    Lib.coerceFont(coerce, 'font', layout.font);

    var bgColor = coerce('bgcolor');
    coerce('activecolor', Color.contrast(bgColor, constants.lightAmount, constants.darkAmount));
    coerce('bordercolor');
    coerce('borderwidth');
};

function buttonsDefaults(containerIn, containerOut, calendar) {
    var buttonsIn = containerIn.buttons || [],
        buttonsOut = containerOut.buttons = [];

    var buttonIn, buttonOut;

    function coerce(attr, dflt) {
        return Lib.coerce(buttonIn, buttonOut, buttonAttrs, attr, dflt);
    }

    for(var i = 0; i < buttonsIn.length; i++) {
        buttonIn = buttonsIn[i];
        buttonOut = {};

        if(!Lib.isPlainObject(buttonIn)) continue;

        var step = coerce('step');
        if(step !== 'all') {
            if(calendar && calendar !== 'gregorian' && (step === 'month' || step === 'year')) {
                buttonOut.stepmode = 'backward';
            }
            else {
                coerce('stepmode');
            }

            coerce('count');
        }

        coerce('label');

        buttonOut._index = i;
        buttonsOut.push(buttonOut);
    }

    return buttonsOut;
}

function getPosDflt(containerOut, layout, counterAxes) {
    var anchoredList = counterAxes.filter(function(ax) {
        return layout[ax].anchor === containerOut._id;
    });

    var posY = 0;
    for(var i = 0; i < anchoredList.length; i++) {
        var domain = layout[anchoredList[i]].domain;
        if(domain) posY = Math.max(domain[1], posY);
    }

    return [containerOut.domain[0], posY + constants.yPad];
}

},{"../../lib":610,"../color":510,"./attributes":559,"./button_attributes":560,"./constants":561}],563:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var axisIds = require('../../plots/cartesian/axis_ids');
var anchorUtils = require('../legend/anchor_utils');

var constants = require('./constants');
var getUpdateObject = require('./get_update_object');


module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout;

    var selectors = fullLayout._infolayer.selectAll('.rangeselector')
        .data(makeSelectorData(gd), selectorKeyFunc);

    selectors.enter().append('g')
        .classed('rangeselector', true);

    selectors.exit().remove();

    selectors.style({
        cursor: 'pointer',
        'pointer-events': 'all'
    });

    selectors.each(function(d) {
        var selector = d3.select(this),
            axisLayout = d,
            selectorLayout = axisLayout.rangeselector;

        var buttons = selector.selectAll('g.button')
            .data(selectorLayout.buttons);

        buttons.enter().append('g')
            .classed('button', true);

        buttons.exit().remove();

        buttons.each(function(d) {
            var button = d3.select(this);
            var update = getUpdateObject(axisLayout, d);

            d.isActive = isActive(axisLayout, d, update);

            button.call(drawButtonRect, selectorLayout, d);
            button.call(drawButtonText, selectorLayout, d);

            button.on('click', function() {
                if(gd._dragged) return;

                Plotly.relayout(gd, update);
            });

            button.on('mouseover', function() {
                d.isHovered = true;
                button.call(drawButtonRect, selectorLayout, d);
            });

            button.on('mouseout', function() {
                d.isHovered = false;
                button.call(drawButtonRect, selectorLayout, d);
            });
        });

        // N.B. this mutates selectorLayout
        reposition(gd, buttons, selectorLayout, axisLayout._name);

        selector.attr('transform', 'translate(' +
            selectorLayout.lx + ',' + selectorLayout.ly +
        ')');
    });

};

function makeSelectorData(gd) {
    var axes = axisIds.list(gd, 'x', true);
    var data = [];

    for(var i = 0; i < axes.length; i++) {
        var axis = axes[i];

        if(axis.rangeselector && axis.rangeselector.visible) {
            data.push(axis);
        }
    }

    return data;
}

function selectorKeyFunc(d) {
    return d._id;
}

function isActive(axisLayout, opts, update) {
    if(opts.step === 'all') {
        return axisLayout.autorange === true;
    }
    else {
        var keys = Object.keys(update);

        return (
            axisLayout.range[0] === update[keys[0]] &&
            axisLayout.range[1] === update[keys[1]]
        );
    }
}

function drawButtonRect(button, selectorLayout, d) {
    var rect = button.selectAll('rect')
        .data([0]);

    rect.enter().append('rect')
        .classed('selector-rect', true);

    rect.attr('shape-rendering', 'crispEdges');

    rect.attr({
        'rx': constants.rx,
        'ry': constants.ry
    });

    rect.call(Color.stroke, selectorLayout.bordercolor)
        .call(Color.fill, getFillColor(selectorLayout, d))
        .style('stroke-width', selectorLayout.borderwidth + 'px');
}

function getFillColor(selectorLayout, d) {
    return (d.isActive || d.isHovered) ?
        selectorLayout.activecolor :
        selectorLayout.bgcolor;
}

function drawButtonText(button, selectorLayout, d) {
    function textLayout(s) {
        svgTextUtils.convertToTspans(s);

        // TODO do we need anything else here?
    }

    var text = button.selectAll('text')
        .data([0]);

    text.enter().append('text')
        .classed('selector-text', true)
        .classed('user-select-none', true);

    text.attr('text-anchor', 'middle');

    text.call(Drawing.font, selectorLayout.font)
        .text(getLabel(d))
        .call(textLayout);
}

function getLabel(opts) {
    if(opts.label) return opts.label;

    if(opts.step === 'all') return 'all';

    return opts.count + opts.step.charAt(0);
}

function reposition(gd, buttons, opts, axName) {
    opts.width = 0;
    opts.height = 0;

    var borderWidth = opts.borderwidth;

    buttons.each(function() {
        var button = d3.select(this),
            text = button.select('.selector-text'),
            tspans = text.selectAll('tspan');

        var tHeight = opts.font.size * 1.3,
            tLines = tspans[0].length || 1,
            hEff = Math.max(tHeight * tLines, 16) + 3;

        opts.height = Math.max(opts.height, hEff);
    });

    buttons.each(function() {
        var button = d3.select(this),
            rect = button.select('.selector-rect'),
            text = button.select('.selector-text'),
            tspans = text.selectAll('tspan');

        var tWidth = text.node() && Drawing.bBox(text.node()).width,
            tHeight = opts.font.size * 1.3,
            tLines = tspans[0].length || 1;

        var wEff = Math.max(tWidth + 10, constants.minButtonWidth);

        // TODO add MathJax support

        // TODO add buttongap attribute

        button.attr('transform', 'translate(' +
            (borderWidth + opts.width) + ',' + borderWidth +
        ')');

        rect.attr({
            x: 0,
            y: 0,
            width: wEff,
            height: opts.height
        });

        var textAttrs = {
            x: wEff / 2,
            y: opts.height / 2 - ((tLines - 1) * tHeight / 2) + 3
        };

        text.attr(textAttrs);
        tspans.attr(textAttrs);

        opts.width += wEff + 5;
    });

    buttons.selectAll('rect').attr('height', opts.height);

    var graphSize = gd._fullLayout._size;
    opts.lx = graphSize.l + graphSize.w * opts.x;
    opts.ly = graphSize.t + graphSize.h * (1 - opts.y);

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(opts)) {
        opts.lx -= opts.width;
        xanchor = 'right';
    }
    if(anchorUtils.isCenterAnchor(opts)) {
        opts.lx -= opts.width / 2;
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(opts)) {
        opts.ly -= opts.height;
        yanchor = 'bottom';
    }
    if(anchorUtils.isMiddleAnchor(opts)) {
        opts.ly -= opts.height / 2;
        yanchor = 'middle';
    }

    opts.width = Math.ceil(opts.width);
    opts.height = Math.ceil(opts.height);
    opts.lx = Math.round(opts.lx);
    opts.ly = Math.round(opts.ly);

    Plots.autoMargin(gd, axName + '-range-selector', {
        x: opts.x,
        y: opts.y,
        l: opts.width * ({right: 1, center: 0.5}[xanchor] || 0),
        r: opts.width * ({left: 1, center: 0.5}[xanchor] || 0),
        b: opts.height * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: opts.height * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

},{"../../lib/svg_text_utils":625,"../../plotly":637,"../../plots/cartesian/axis_ids":645,"../../plots/plots":702,"../color":510,"../drawing":533,"../legend/anchor_utils":546,"./constants":561,"./get_update_object":564,"d3":86}],564:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

module.exports = function getUpdateObject(axisLayout, buttonLayout) {
    var axName = axisLayout._name;
    var update = {};

    if(buttonLayout.step === 'all') {
        update[axName + '.autorange'] = true;
    }
    else {
        var xrange = getXRange(axisLayout, buttonLayout);

        update[axName + '.range[0]'] = xrange[0];
        update[axName + '.range[1]'] = xrange[1];
    }

    return update;
};

function getXRange(axisLayout, buttonLayout) {
    var currentRange = axisLayout.range;
    var base = new Date(axisLayout.r2l(currentRange[1]));

    var step = buttonLayout.step,
        count = buttonLayout.count;

    var range0;

    switch(buttonLayout.stepmode) {
        case 'backward':
            range0 = axisLayout.l2r(+d3.time[step].utc.offset(base, -count));
            break;

        case 'todate':
            var base2 = d3.time[step].utc.offset(base, -count);

            range0 = axisLayout.l2r(+d3.time[step].utc.ceil(base2));
            break;
    }

    var range1 = currentRange[1];

    return [range0, range1];
}

},{"d3":86}],565:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'rangeselector',

    schema: {
        layout: {
            'xaxis.rangeselector': require('./attributes')
        }
    },

    layoutAttributes: require('./attributes'),
    handleDefaults: require('./defaults'),

    draw: require('./draw')
};

},{"./attributes":559,"./defaults":562,"./draw":563}],566:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttributes = require('../color/attributes');

module.exports = {
    bgcolor: {
        valType: 'color',
        dflt: colorAttributes.background,
        role: 'style',
        description: 'Sets the background color of the range slider.'
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttributes.defaultLine,
        role: 'style',
        description: 'Sets the border color of the range slider.'
    },
    borderwidth: {
        valType: 'integer',
        dflt: 0,
        min: 0,
        role: 'style',
        description: 'Sets the border color of the range slider.'
    },
    range: {
        valType: 'info_array',
        role: 'info',
        items: [
            {valType: 'any'},
            {valType: 'any'}
        ],
        description: [
            'Sets the range of the range slider.',
            'If not set, defaults to the full xaxis range.',
            'If the axis `type` is *log*, then you must take the',
            'log of your desired range.',
            'If the axis `type` is *date*, it should be date strings,',
            'like date data, though Date objects and unix milliseconds',
            'will be accepted and converted to strings.',
            'If the axis `type` is *category*, it should be numbers,',
            'using the scale where each category is assigned a serial',
            'number from zero in the order it appears.'
        ].join(' ')
    },
    thickness: {
        valType: 'number',
        dflt: 0.15,
        min: 0,
        max: 1,
        role: 'style',
        description: [
            'The height of the range slider as a fraction of the',
            'total plot area height.'
        ].join(' ')
    },
    visible: {
        valType: 'boolean',
        dflt: true,
        role: 'info',
        description: [
            'Determines whether or not the range slider will be visible.',
            'If visible, perpendicular axes will be set to `fixedrange`'
        ].join(' ')
    }
};

},{"../color/attributes":509}],567:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {

    // attribute container name
    name: 'rangeslider',

    // class names

    containerClassName: 'rangeslider-container',
    bgClassName: 'rangeslider-bg',
    rangePlotClassName: 'rangeslider-rangeplot',

    maskMinClassName: 'rangeslider-mask-min',
    maskMaxClassName: 'rangeslider-mask-max',
    slideBoxClassName: 'rangeslider-slidebox',

    grabberMinClassName: 'rangeslider-grabber-min',
    grabAreaMinClassName: 'rangeslider-grabarea-min',
    handleMinClassName: 'rangeslider-handle-min',

    grabberMaxClassName: 'rangeslider-grabber-max',
    grabAreaMaxClassName: 'rangeslider-grabarea-max',
    handleMaxClassName: 'rangeslider-handle-max',

    // style constants

    maskColor: 'rgba(0,0,0,0.4)',

    slideBoxFill: 'transparent',
    slideBoxCursor: 'ew-resize',

    grabAreaFill: 'transparent',
    grabAreaCursor: 'col-resize',
    grabAreaWidth: 10,
    grabAreaMinOffset: -6,
    grabAreaMaxOffset: -2,

    handleWidth: 2,
    handleRadius: 1,
    handleFill: '#fff',
    handleStroke: '#666',
};

},{}],568:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var attributes = require('./attributes');


module.exports = function handleDefaults(layoutIn, layoutOut, axName, counterAxes) {
    if(!layoutIn[axName].rangeslider) return;

    // not super proud of this (maybe store _ in axis object instead
    if(!Lib.isPlainObject(layoutIn[axName].rangeslider)) {
        layoutIn[axName].rangeslider = {};
    }

    var containerIn = layoutIn[axName].rangeslider,
        axOut = layoutOut[axName],
        containerOut = axOut.rangeslider = {};

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, attributes, attr, dflt);
    }

    coerce('bgcolor', layoutOut.plot_bgcolor);
    coerce('bordercolor');
    coerce('borderwidth');
    coerce('thickness');
    coerce('visible');
    coerce('range');

    // Expand slider range to the axis range
    if(containerOut.range && !axOut.autorange) {
        // TODO: what if the ranges are reversed?
        var outRange = containerOut.range,
            axRange = axOut.range;

        outRange[0] = axOut.l2r(Math.min(axOut.r2l(outRange[0]), axOut.r2l(axRange[0])));
        outRange[1] = axOut.l2r(Math.max(axOut.r2l(outRange[1]), axOut.r2l(axRange[1])));
    } else {
        axOut._needsExpand = true;
    }

    if(containerOut.visible) {
        counterAxes.forEach(function(ax) {
            var opposing = layoutOut[ax] || {};
            opposing.fixedrange = true;
            layoutOut[ax] = opposing;
        });
    }

    // to map back range slider (auto) range
    containerOut._input = containerIn;
};

},{"../../lib":610,"./attributes":566}],569:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');

var Lib = require('../../lib');
var Drawing = require('../drawing');
var Color = require('../color');

var Cartesian = require('../../plots/cartesian');
var Axes = require('../../plots/cartesian/axes');

var dragElement = require('../dragelement');
var setCursor = require('../../lib/setcursor');

var constants = require('./constants');


module.exports = function(gd) {
    var fullLayout = gd._fullLayout,
        rangeSliderData = makeRangeSliderData(fullLayout);

    /*
     * <g container />
     *  <rect bg />
     *  < .... range plot />
     *  <rect mask-min />
     *  <rect mask-max />
     *  <rect slidebox />
     *  <g grabber-min />
     *      <rect handle-min />
     *      <rect grabare-min />
     *  <g grabber-max />
     *      <rect handle-max />
     *      <rect grabare-max />
     *
     *  ...
     */

    function keyFunction(axisOpts) {
        return axisOpts._name;
    }

    var rangeSliders = fullLayout._infolayer
        .selectAll('g.' + constants.containerClassName)
        .data(rangeSliderData, keyFunction);

    rangeSliders.enter().append('g')
        .classed(constants.containerClassName, true)
        .attr('pointer-events', 'all');

    // remove exiting sliders and their corresponding clip paths
    rangeSliders.exit().each(function(axisOpts) {
        var rangeSlider = d3.select(this),
            opts = axisOpts[constants.name];

        rangeSlider.remove();
        fullLayout._topdefs.select('#' + opts._clipId).remove();
    });

    // remove push margin object(s)
    if(rangeSliders.exit().size()) clearPushMargins(gd);

    // return early if no range slider is visible
    if(rangeSliderData.length === 0) return;

    // for all present range sliders
    rangeSliders.each(function(axisOpts) {
        var rangeSlider = d3.select(this),
            opts = axisOpts[constants.name];

        // compute new slider range using axis autorange if necessary
        // copy back range to input range slider container to skip
        // this step in subsequent draw calls
        if(!opts.range) {
            opts._input.range = opts.range = Axes.getAutoRange(axisOpts);
        }

        // update range slider dimensions

        var margin = fullLayout.margin,
            graphSize = fullLayout._size,
            domain = axisOpts.domain;

        opts._id = constants.name + axisOpts._id;
        opts._clipId = opts._id + '-' + fullLayout._uid;

        opts._width = graphSize.w * (domain[1] - domain[0]);
        opts._height = (fullLayout.height - margin.b - margin.t) * opts.thickness;
        opts._offsetShift = Math.floor(opts.borderwidth / 2);

        var x = margin.l + (graphSize.w * domain[0]),
            y = fullLayout.height - opts._height - margin.b;

        rangeSlider.attr('transform', 'translate(' + x + ',' + y + ')');

        // update data <--> pixel coordinate conversion methods

        var range0 = axisOpts.r2l(opts.range[0]),
            range1 = axisOpts.r2l(opts.range[1]),
            dist = range1 - range0;

        opts.p2d = function(v) {
            return (v / opts._width) * dist + range0;
        };

        opts.d2p = function(v) {
            return (v - range0) / dist * opts._width;
        };

        opts._rl = [range0, range1];

        // update inner nodes

        rangeSlider
            .call(drawBg, gd, axisOpts, opts)
            .call(addClipPath, gd, axisOpts, opts)
            .call(drawRangePlot, gd, axisOpts, opts)
            .call(drawMasks, gd, axisOpts, opts)
            .call(drawSlideBox, gd, axisOpts, opts)
            .call(drawGrabbers, gd, axisOpts, opts);

        // setup drag element
        setupDragElement(rangeSlider, gd, axisOpts, opts);

        // update current range
        setPixelRange(rangeSlider, gd, axisOpts, opts);

        // update margins

        var bb = axisOpts._boundingBox ? axisOpts._boundingBox.height : 0;

        Plots.autoMargin(gd, opts._id, {
            x: 0, y: 0, l: 0, r: 0, t: 0,
            b: opts._height + fullLayout.margin.b + bb,
            pad: 15 + opts._offsetShift * 2
        });
    });
};

function makeRangeSliderData(fullLayout) {
    if(!fullLayout.xaxis) return [];
    if(!fullLayout.xaxis[constants.name]) return [];
    if(!fullLayout.xaxis[constants.name].visible) return [];
    if(fullLayout._has('gl2d')) return [];

    return [fullLayout.xaxis];
}

function setupDragElement(rangeSlider, gd, axisOpts, opts) {
    var slideBox = rangeSlider.select('rect.' + constants.slideBoxClassName).node(),
        grabAreaMin = rangeSlider.select('rect.' + constants.grabAreaMinClassName).node(),
        grabAreaMax = rangeSlider.select('rect.' + constants.grabAreaMaxClassName).node();

    rangeSlider.on('mousedown', function() {
        var event = d3.event,
            target = event.target,
            startX = event.clientX,
            offsetX = startX - rangeSlider.node().getBoundingClientRect().left,
            minVal = opts.d2p(axisOpts._rl[0]),
            maxVal = opts.d2p(axisOpts._rl[1]);

        var dragCover = dragElement.coverSlip();

        dragCover.addEventListener('mousemove', mouseMove);
        dragCover.addEventListener('mouseup', mouseUp);

        function mouseMove(e) {
            var delta = +e.clientX - startX;
            var pixelMin, pixelMax, cursor;

            switch(target) {
                case slideBox:
                    cursor = 'ew-resize';
                    pixelMin = minVal + delta;
                    pixelMax = maxVal + delta;
                    break;

                case grabAreaMin:
                    cursor = 'col-resize';
                    pixelMin = minVal + delta;
                    pixelMax = maxVal;
                    break;

                case grabAreaMax:
                    cursor = 'col-resize';
                    pixelMin = minVal;
                    pixelMax = maxVal + delta;
                    break;

                default:
                    cursor = 'ew-resize';
                    pixelMin = offsetX;
                    pixelMax = offsetX + delta;
                    break;
            }

            if(pixelMax < pixelMin) {
                var tmp = pixelMax;
                pixelMax = pixelMin;
                pixelMin = tmp;
            }

            opts._pixelMin = pixelMin;
            opts._pixelMax = pixelMax;

            setCursor(d3.select(dragCover), cursor);
            setDataRange(rangeSlider, gd, axisOpts, opts);
        }

        function mouseUp() {
            dragCover.removeEventListener('mousemove', mouseMove);
            dragCover.removeEventListener('mouseup', mouseUp);
            Lib.removeElement(dragCover);
        }
    });
}

function setDataRange(rangeSlider, gd, axisOpts, opts) {

    function clamp(v) {
        return axisOpts.l2r(Lib.constrain(v, opts._rl[0], opts._rl[1]));
    }

    var dataMin = clamp(opts.p2d(opts._pixelMin)),
        dataMax = clamp(opts.p2d(opts._pixelMax));

    window.requestAnimationFrame(function() {
        Plotly.relayout(gd, 'xaxis.range', [dataMin, dataMax]);
    });
}

function setPixelRange(rangeSlider, gd, axisOpts, opts) {

    function clamp(v) {
        return Lib.constrain(v, 0, opts._width);
    }

    var pixelMin = clamp(opts.d2p(axisOpts._rl[0])),
        pixelMax = clamp(opts.d2p(axisOpts._rl[1]));

    rangeSlider.select('rect.' + constants.slideBoxClassName)
        .attr('x', pixelMin)
        .attr('width', pixelMax - pixelMin);

    rangeSlider.select('rect.' + constants.maskMinClassName)
        .attr('width', pixelMin);

    rangeSlider.select('rect.' + constants.maskMaxClassName)
        .attr('x', pixelMax)
        .attr('width', opts._width - pixelMax);

    rangeSlider.select('g.' + constants.grabberMinClassName)
        .attr('transform', 'translate(' + (pixelMin - constants.handleWidth - 1) + ',0)');

    rangeSlider.select('g.' + constants.grabberMaxClassName)
        .attr('transform', 'translate(' + pixelMax + ',0)');
}

function drawBg(rangeSlider, gd, axisOpts, opts) {
    var bg = rangeSlider.selectAll('rect.' + constants.bgClassName)
        .data([0]);

    bg.enter().append('rect')
        .classed(constants.bgClassName, true)
        .attr({
            x: 0,
            y: 0,
            'shape-rendering': 'crispEdges'
        });

    var borderCorrect = (opts.borderwidth % 2) === 0 ?
            opts.borderwidth :
            opts.borderwidth - 1;

    var offsetShift = -opts._offsetShift;

    bg.attr({
        width: opts._width + borderCorrect,
        height: opts._height + borderCorrect,
        transform: 'translate(' + offsetShift + ',' + offsetShift + ')',
        fill: opts.bgcolor,
        stroke: opts.bordercolor,
        'stroke-width': opts.borderwidth,
    });
}

function addClipPath(rangeSlider, gd, axisOpts, opts) {
    var fullLayout = gd._fullLayout;

    var clipPath = fullLayout._topdefs.selectAll('#' + opts._clipId)
        .data([0]);

    clipPath.enter().append('clipPath')
        .attr('id', opts._clipId)
        .append('rect')
        .attr({ x: 0, y: 0 });

    clipPath.select('rect').attr({
        width: opts._width,
        height: opts._height
    });
}

function drawRangePlot(rangeSlider, gd, axisOpts, opts) {
    var subplotData = Axes.getSubplots(gd, axisOpts),
        calcData = gd.calcdata;

    var rangePlots = rangeSlider.selectAll('g.' + constants.rangePlotClassName)
        .data(subplotData, Lib.identity);

    rangePlots.enter().append('g')
        .attr('class', function(id) { return constants.rangePlotClassName + ' ' + id; })
        .call(Drawing.setClipUrl, opts._clipId);

    rangePlots.order();

    rangePlots.exit().remove();

    var mainplotinfo;

    rangePlots.each(function(id, i) {
        var plotgroup = d3.select(this),
            isMainPlot = (i === 0);

        var oppAxisOpts = Axes.getFromId(gd, id, 'y'),
            oppAxisName = oppAxisOpts._name;

        var mockFigure = {
            data: [],
            layout: {
                xaxis: {
                    type: axisOpts.type,
                    domain: [0, 1],
                    range: opts.range.slice(),
                    calendar: axisOpts.calendar
                },
                width: opts._width,
                height: opts._height,
                margin: { t: 0, b: 0, l: 0, r: 0 }
            }
        };

        mockFigure.layout[oppAxisName] = {
            domain: [0, 1],
            range: oppAxisOpts.range.slice(),
            calendar: oppAxisOpts.calendar
        };

        Plots.supplyDefaults(mockFigure);

        var xa = mockFigure._fullLayout.xaxis,
            ya = mockFigure._fullLayout[oppAxisName];

        var plotinfo = {
            id: id,
            plotgroup: plotgroup,
            xaxis: xa,
            yaxis: ya
        };

        if(isMainPlot) mainplotinfo = plotinfo;
        else {
            plotinfo.mainplot = 'xy';
            plotinfo.mainplotinfo = mainplotinfo;
        }

        Cartesian.rangePlot(gd, plotinfo, filterRangePlotCalcData(calcData, id));

        if(isMainPlot) plotinfo.bg.call(Color.fill, opts.bgcolor);
    });
}

function filterRangePlotCalcData(calcData, subplotId) {
    var out = [];

    for(var i = 0; i < calcData.length; i++) {
        var calcTrace = calcData[i],
            trace = calcTrace[0].trace;

        if(trace.xaxis + trace.yaxis === subplotId) {
            out.push(calcTrace);
        }
    }

    return out;
}

function drawMasks(rangeSlider, gd, axisOpts, opts) {
    var maskMin = rangeSlider.selectAll('rect.' + constants.maskMinClassName)
        .data([0]);

    maskMin.enter().append('rect')
        .classed(constants.maskMinClassName, true)
        .attr({ x: 0, y: 0 });

    maskMin.attr({
        height: opts._height,
        fill: constants.maskColor
    });

    var maskMax = rangeSlider.selectAll('rect.' + constants.maskMaxClassName)
        .data([0]);

    maskMax.enter().append('rect')
        .classed(constants.maskMaxClassName, true)
        .attr('y', 0);

    maskMax.attr({
        height: opts._height,
        fill: constants.maskColor
    });
}

function drawSlideBox(rangeSlider, gd, axisOpts, opts) {
    var slideBox = rangeSlider.selectAll('rect.' + constants.slideBoxClassName)
        .data([0]);

    slideBox.enter().append('rect')
        .classed(constants.slideBoxClassName, true)
        .attr('y', 0)
        .attr('cursor', constants.slideBoxCursor);

    slideBox.attr({
        height: opts._height,
        fill: constants.slideBoxFill
    });
}

function drawGrabbers(rangeSlider, gd, axisOpts, opts) {

    // <g grabber />

    var grabberMin = rangeSlider.selectAll('g.' + constants.grabberMinClassName)
        .data([0]);
    grabberMin.enter().append('g')
        .classed(constants.grabberMinClassName, true);

    var grabberMax = rangeSlider.selectAll('g.' + constants.grabberMaxClassName)
        .data([0]);
    grabberMax.enter().append('g')
        .classed(constants.grabberMaxClassName, true);

    // <g handle />

    var handleFixAttrs = {
        x: 0,
        width: constants.handleWidth,
        rx: constants.handleRadius,
        fill: constants.handleFill,
        stroke: constants.handleStroke,
        'shape-rendering': 'crispEdges'
    };

    var handleDynamicAttrs = {
        y: opts._height / 4,
        height: opts._height / 2,
    };

    var handleMin = grabberMin.selectAll('rect.' + constants.handleMinClassName)
        .data([0]);
    handleMin.enter().append('rect')
        .classed(constants.handleMinClassName, true)
        .attr(handleFixAttrs);
    handleMin.attr(handleDynamicAttrs);

    var handleMax = grabberMax.selectAll('rect.' + constants.handleMaxClassName)
        .data([0]);
    handleMax.enter().append('rect')
        .classed(constants.handleMaxClassName, true)
        .attr(handleFixAttrs);
    handleMax.attr(handleDynamicAttrs);

    // <g grabarea />

    var grabAreaFixAttrs = {
        width: constants.grabAreaWidth,
        y: 0,
        fill: constants.grabAreaFill,
        cursor: constants.grabAreaCursor
    };

    var grabAreaMin = grabberMin.selectAll('rect.' + constants.grabAreaMinClassName)
        .data([0]);
    grabAreaMin.enter().append('rect')
        .classed(constants.grabAreaMinClassName, true)
        .attr(grabAreaFixAttrs);
    grabAreaMin.attr({
        x: constants.grabAreaMinOffset,
        height: opts._height
    });

    var grabAreaMax = grabberMax.selectAll('rect.' + constants.grabAreaMaxClassName)
        .data([0]);
    grabAreaMax.enter().append('rect')
        .classed(constants.grabAreaMaxClassName, true)
        .attr(grabAreaFixAttrs);
    grabAreaMax.attr({
        x: constants.grabAreaMaxOffset,
        height: opts._height
    });
}

function clearPushMargins(gd) {
    var pushMargins = gd._fullLayout._pushmargin || {},
        keys = Object.keys(pushMargins);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        if(k.indexOf(constants.name) !== -1) {
            Plots.autoMargin(gd, k);
        }
    }
}

},{"../../lib":610,"../../lib/setcursor":621,"../../plotly":637,"../../plots/cartesian":650,"../../plots/cartesian/axes":642,"../../plots/plots":702,"../color":510,"../dragelement":531,"../drawing":533,"./constants":567,"d3":86}],570:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    moduleType: 'component',
    name: 'rangeslider',

    schema: {
        layout: {
            'xaxis.rangeslider': require('./attributes')
        }
    },

    layoutAttributes: require('./attributes'),
    handleDefaults: require('./defaults'),

    draw: require('./draw')
};

},{"./attributes":566,"./defaults":568,"./draw":569}],571:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var annAttrs = require('../annotations/attributes');
var scatterAttrs = require('../../traces/scatter/attributes');
var extendFlat = require('../../lib/extend').extendFlat;

var scatterLineAttrs = scatterAttrs.line;

module.exports = {
    _isLinkedToArray: 'shape',

    visible: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not this shape is visible.'
        ].join(' ')
    },

    type: {
        valType: 'enumerated',
        values: ['circle', 'rect', 'path', 'line'],
        role: 'info',
        description: [
            'Specifies the shape type to be drawn.',

            'If *line*, a line is drawn from (`x0`,`y0`) to (`x1`,`y1`)',

            'If *circle*, a circle is drawn from',
            '((`x0`+`x1`)/2, (`y0`+`y1`)/2))',
            'with radius',
            '(|(`x0`+`x1`)/2 - `x0`|, |(`y0`+`y1`)/2 -`y0`)|)',

            'If *rect*, a rectangle is drawn linking',
            '(`x0`,`y0`), (`x1`,`y0`), (`x1`,`y1`), (`x0`,`y1`), (`x0`,`y0`)',

            'If *path*, draw a custom SVG path using `path`.'
        ].join(' ')
    },

    layer: {
        valType: 'enumerated',
        values: ['below', 'above'],
        dflt: 'above',
        role: 'info',
        description: 'Specifies whether shapes are drawn below or above traces.'
    },

    xref: extendFlat({}, annAttrs.xref, {
        description: [
            'Sets the shape\'s x coordinate axis.',
            'If set to an x axis id (e.g. *x* or *x2*), the `x` position',
            'refers to an x coordinate',
            'If set to *paper*, the `x` position refers to the distance from',
            'the left side of the plotting area in normalized coordinates',
            'where *0* (*1*) corresponds to the left (right) side.',
            'If the axis `type` is *log*, then you must take the',
            'log of your desired range.',
            'If the axis `type` is *date*, then you must convert',
            'the date to unix time in milliseconds.'
        ].join(' ')
    }),
    x0: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the shape\'s starting x position.',
            'See `type` for more info.'
        ].join(' ')
    },
    x1: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the shape\'s end x position.',
            'See `type` for more info.'
        ].join(' ')
    },

    yref: extendFlat({}, annAttrs.yref, {
        description: [
            'Sets the annotation\'s y coordinate axis.',
            'If set to an y axis id (e.g. *y* or *y2*), the `y` position',
            'refers to an y coordinate',
            'If set to *paper*, the `y` position refers to the distance from',
            'the bottom of the plotting area in normalized coordinates',
            'where *0* (*1*) corresponds to the bottom (top).'
        ].join(' ')
    }),
    y0: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the shape\'s starting y position.',
            'See `type` for more info.'
        ].join(' ')
    },
    y1: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the shape\'s end y position.',
            'See `type` for more info.'
        ].join(' ')
    },

    path: {
        valType: 'string',
        role: 'info',
        description: [
            'For `type` *path* - a valid SVG path but with the pixel values',
            'replaced by data values. There are a few restrictions / quirks',
            'only absolute instructions, not relative. So the allowed segments',
            'are: M, L, H, V, Q, C, T, S, and Z',
            'arcs (A) are not allowed because radius rx and ry are relative.',

            'In the future we could consider supporting relative commands,',
            'but we would have to decide on how to handle date and log axes.',
            'Note that even as is, Q and C Bezier paths that are smooth on',
            'linear axes may not be smooth on log, and vice versa.',
            'no chained "polybezier" commands - specify the segment type for',
            'each one.',

            'On category axes, values are numbers scaled to the serial numbers',
            'of categories because using the categories themselves there would',
            'be no way to describe fractional positions',
            'On data axes: because space and T are both normal components of path',
            'strings, we can\'t use either to separate date from time parts.',
            'Therefore we\'ll use underscore for this purpose:',
            '2015-02-21_13:45:56.789'
        ].join(' ')
    },

    opacity: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 1,
        role: 'info',
        description: 'Sets the opacity of the shape.'
    },
    line: {
        color: scatterLineAttrs.color,
        width: scatterLineAttrs.width,
        dash: scatterLineAttrs.dash,
        role: 'info'
    },
    fillcolor: {
        valType: 'color',
        dflt: 'rgba(0,0,0,0)',
        role: 'info',
        description: [
            'Sets the color filling the shape\'s interior.'
        ].join(' ')
    }
};

},{"../../lib/extend":603,"../../traces/scatter/attributes":834,"../annotations/attributes":501}],572:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var constants = require('./constants');
var helpers = require('./helpers');


module.exports = function calcAutorange(gd) {
    var fullLayout = gd._fullLayout,
        shapeList = Lib.filterVisible(fullLayout.shapes);

    if(!shapeList.length || !gd._fullData.length) return;

    for(var i = 0; i < shapeList.length; i++) {
        var shape = shapeList[i],
            ppad = shape.line.width / 2;

        var ax, bounds;

        if(shape.xref !== 'paper') {
            ax = Axes.getFromId(gd, shape.xref);
            bounds = shapeBounds(ax, shape.x0, shape.x1, shape.path, constants.paramIsX);
            if(bounds) Axes.expand(ax, bounds, {ppad: ppad});
        }

        if(shape.yref !== 'paper') {
            ax = Axes.getFromId(gd, shape.yref);
            bounds = shapeBounds(ax, shape.y0, shape.y1, shape.path, constants.paramIsY);
            if(bounds) Axes.expand(ax, bounds, {ppad: ppad});
        }
    }
};

function shapeBounds(ax, v0, v1, path, paramsToUse) {
    var convertVal = (ax.type === 'category') ? Number : ax.d2c;

    if(v0 !== undefined) return [convertVal(v0), convertVal(v1)];
    if(!path) return;

    var min = Infinity,
        max = -Infinity,
        segments = path.match(constants.segmentRE),
        i,
        segment,
        drawnParam,
        params,
        val;

    if(ax.type === 'date') convertVal = helpers.decodeDate(convertVal);

    for(i = 0; i < segments.length; i++) {
        segment = segments[i];
        drawnParam = paramsToUse[segment.charAt(0)].drawn;
        if(drawnParam === undefined) continue;

        params = segments[i].substr(1).match(constants.paramRE);
        if(!params || params.length < drawnParam) continue;

        val = convertVal(params[drawnParam]);
        if(val < min) min = val;
        if(val > max) max = val;
    }
    if(max >= min) return [min, max];
}

},{"../../lib":610,"../../plots/cartesian/axes":642,"./constants":573,"./helpers":576}],573:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    segmentRE: /[MLHVQCTSZ][^MLHVQCTSZ]*/g,
    paramRE: /[^\s,]+/g,

    // which numbers in each path segment are x (or y) values
    // drawn is which param is a drawn point, as opposed to a
    // control point (which doesn't count toward autorange.
    // TODO: this means curved paths could extend beyond the
    // autorange bounds. This is a bit tricky to get right
    // unless we revert to bounding boxes, but perhaps there's
    // a calculation we could do...)
    paramIsX: {
        M: {0: true, drawn: 0},
        L: {0: true, drawn: 0},
        H: {0: true, drawn: 0},
        V: {},
        Q: {0: true, 2: true, drawn: 2},
        C: {0: true, 2: true, 4: true, drawn: 4},
        T: {0: true, drawn: 0},
        S: {0: true, 2: true, drawn: 2},
        // A: {0: true, 5: true},
        Z: {}
    },

    paramIsY: {
        M: {1: true, drawn: 1},
        L: {1: true, drawn: 1},
        H: {},
        V: {0: true, drawn: 0},
        Q: {1: true, 3: true, drawn: 3},
        C: {1: true, 3: true, 5: true, drawn: 5},
        T: {1: true, drawn: 1},
        S: {1: true, 3: true, drawn: 5},
        // A: {1: true, 6: true},
        Z: {}
    },

    numParams: {
        M: 2,
        L: 2,
        H: 1,
        V: 1,
        Q: 4,
        C: 6,
        T: 2,
        S: 4,
        // A: 7,
        Z: 0
    }
};

},{}],574:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var handleArrayContainerDefaults = require('../../plots/array_container_defaults');
var handleShapeDefaults = require('./shape_defaults');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    var opts = {
        name: 'shapes',
        handleItemDefaults: handleShapeDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

},{"../../plots/array_container_defaults":639,"./shape_defaults":578}],575:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Plotly = require('../../plotly');
var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var Color = require('../color');
var Drawing = require('../drawing');

var dragElement = require('../dragelement');
var setCursor = require('../../lib/setcursor');

var constants = require('./constants');
var helpers = require('./helpers');
var handleShapeDefaults = require('./shape_defaults');
var supplyLayoutDefaults = require('./defaults');


// Shapes are stored in gd.layout.shapes, an array of objects
// index can point to one item in this array,
//  or non-numeric to simply add a new one
//  or -1 to modify all existing
// opt can be the full options object, or one key (to be set to value)
//  or undefined to simply redraw
// if opt is blank, val can be 'add' or a full options object to add a new
//  annotation at that point in the array, or 'remove' to delete this one

module.exports = {
    draw: draw,
    drawOne: drawOne
};

function draw(gd) {
    var fullLayout = gd._fullLayout;

    // Remove previous shapes before drawing new in shapes in fullLayout.shapes
    fullLayout._shapeUpperLayer.selectAll('path').remove();
    fullLayout._shapeLowerLayer.selectAll('path').remove();
    fullLayout._shapeSubplotLayer.selectAll('path').remove();

    for(var i = 0; i < fullLayout.shapes.length; i++) {
        if(fullLayout.shapes[i].visible) {
            drawOne(gd, i);
        }
    }

    // may need to resurrect this if we put text (LaTeX) in shapes
    // return Plots.previousPromises(gd);
}

function drawOne(gd, index, opt, value) {
    if(!isNumeric(index) || index === -1) {

        // no index provided - we're operating on ALL shapes
        if(!index && Array.isArray(value)) {
            replaceAllShapes(gd, value);
            return;
        }
        else if(value === 'remove') {
            deleteAllShapes(gd);
            return;
        }
        else if(opt && value !== 'add') {
            updateAllShapes(gd, opt, value);
            return;
        }
        else {
            // add a new empty annotation
            index = gd._fullLayout.shapes.length;
            gd._fullLayout.shapes.push({});
        }
    }

    if(!opt && value) {
        if(value === 'remove') {
            deleteShape(gd, index);
            return;
        }
        else if(value === 'add' || Lib.isPlainObject(value)) {
            insertShape(gd, index, value);
        }
    }

    updateShape(gd, index, opt, value);
}

function replaceAllShapes(gd, newShapes) {
    gd.layout.shapes = newShapes;
    supplyLayoutDefaults(gd.layout, gd._fullLayout);
    draw(gd);
}

function deleteAllShapes(gd) {
    delete gd.layout.shapes;
    gd._fullLayout.shapes = [];
    draw(gd);
}

function updateAllShapes(gd, opt, value) {
    for(var i = 0; i < gd._fullLayout.shapes.length; i++) {
        drawOne(gd, i, opt, value);
    }
}

function deleteShape(gd, index) {
    getShapeLayer(gd, index)
        .selectAll('[data-index="' + index + '"]')
        .remove();

    gd._fullLayout.shapes.splice(index, 1);

    gd.layout.shapes.splice(index, 1);

    for(var i = index; i < gd._fullLayout.shapes.length; i++) {
        // redraw all shapes past the removed one,
        // so they bind to the right events
        getShapeLayer(gd, i)
            .selectAll('[data-index="' + (i + 1) + '"]')
            .attr('data-index', i);
        drawOne(gd, i);
    }
}

function insertShape(gd, index, newShape) {
    gd._fullLayout.shapes.splice(index, 0, {});

    var rule = Lib.isPlainObject(newShape) ?
        Lib.extendFlat({}, newShape) :
        {text: 'New text'};

    if(gd.layout.shapes) {
        gd.layout.shapes.splice(index, 0, rule);
    } else {
        gd.layout.shapes = [rule];
    }

    // there is no need to call shapes.draw(gd, index),
    // because updateShape() is called from within shapes.draw()

    for(var i = gd._fullLayout.shapes.length - 1; i > index; i--) {
        getShapeLayer(gd, i)
            .selectAll('[data-index="' + (i - 1) + '"]')
            .attr('data-index', i);
        drawOne(gd, i);
    }
}

function updateShape(gd, index, opt, value) {
    var i, n;

    // remove the existing shape if there is one
    getShapeLayer(gd, index)
        .selectAll('[data-index="' + index + '"]')
        .remove();

    // remember a few things about what was already there,
    var optionsIn = gd.layout.shapes[index];

    // (from annos...) not sure how we're getting here... but C12 is seeing a bug
    // where we fail here when they add/remove annotations
    // TODO: clean this up and remove it.
    if(!optionsIn) return;

    // alter the input shape as requested
    var optionsEdit = {};
    if(typeof opt === 'string' && opt) optionsEdit[opt] = value;
    else if(Lib.isPlainObject(opt)) optionsEdit = opt;

    var optionKeys = Object.keys(optionsEdit);
    for(i = 0; i < optionKeys.length; i++) {
        var k = optionKeys[i];
        Lib.nestedProperty(optionsIn, k).set(optionsEdit[k]);
    }

    // return early in visible: false updates
    if(optionsIn.visible === false) return;

    var oldRef = {xref: optionsIn.xref, yref: optionsIn.yref},
        posAttrs = ['x0', 'x1', 'y0', 'y1'];

    for(i = 0; i < 4; i++) {
        var posAttr = posAttrs[i];
        // if we don't have an explicit position already,
        // don't set one just because we're changing references
        // or axis type.
        // the defaults will be consistent most of the time anyway,
        // except in log/linear changes
        if(optionsEdit[posAttr] !== undefined ||
                optionsIn[posAttr] === undefined) {
            continue;
        }

        var axLetter = posAttr.charAt(0),
            axOld = Axes.getFromId(gd,
                Axes.coerceRef(oldRef, {}, gd, axLetter, '', 'paper')),
            axNew = Axes.getFromId(gd,
                Axes.coerceRef(optionsIn, {}, gd, axLetter, '', 'paper')),
            position = optionsIn[posAttr],
            rangePosition;

        if(optionsEdit[axLetter + 'ref'] !== undefined) {
            // first convert to fraction of the axis
            if(axOld) {
                rangePosition = helpers.shapePositionToRange(axOld)(position);
                position = axOld.r2fraction(rangePosition);
            } else {
                position = (position - axNew.domain[0]) /
                    (axNew.domain[1] - axNew.domain[0]);
            }

            if(axNew) {
                // then convert to new data coordinates at the same fraction
                rangePosition = axNew.fraction2r(position);
                position = helpers.rangeToShapePosition(axNew)(rangePosition);
            } else {
                // or scale to the whole plot
                position = axOld.domain[0] +
                    position * (axOld.domain[1] - axOld.domain[0]);
            }
        }

        optionsIn[posAttr] = position;
    }

    var options = {};
    handleShapeDefaults(optionsIn, options, gd._fullLayout);
    gd._fullLayout.shapes[index] = options;

    var clipAxes;
    if(options.layer !== 'below') {
        clipAxes = (options.xref + options.yref).replace(/paper/g, '');
        drawShape(gd._fullLayout._shapeUpperLayer);
    }
    else if(options.xref === 'paper' && options.yref === 'paper') {
        clipAxes = '';
        drawShape(gd._fullLayout._shapeLowerLayer);
    }
    else {
        var plots = gd._fullLayout._plots || {},
            subplots = Object.keys(plots),
            plotinfo;

        for(i = 0, n = subplots.length; i < n; i++) {
            plotinfo = plots[subplots[i]];
            clipAxes = subplots[i];

            if(isShapeInSubplot(gd, options, plotinfo)) {
                drawShape(plotinfo.shapelayer);
            }
        }
    }

    function drawShape(shapeLayer) {
        var attrs = {
                'data-index': index,
                'fill-rule': 'evenodd',
                d: getPathString(gd, options)
            },
            lineColor = options.line.width ?
                options.line.color : 'rgba(0,0,0,0)';

        var path = shapeLayer.append('path')
            .attr(attrs)
            .style('opacity', options.opacity)
            .call(Color.stroke, lineColor)
            .call(Color.fill, options.fillcolor)
            .call(Drawing.dashLine, options.line.dash, options.line.width);

        if(clipAxes) {
            path.call(Drawing.setClipUrl,
                'clip' + gd._fullLayout._uid + clipAxes);
        }

        if(gd._context.editable) setupDragElement(gd, path, options, index);
    }
}

function setupDragElement(gd, shapePath, shapeOptions, index) {
    var MINWIDTH = 10,
        MINHEIGHT = 10;

    var update;
    var x0, y0, x1, y1, astrX0, astrY0, astrX1, astrY1;
    var n0, s0, w0, e0, astrN, astrS, astrW, astrE, optN, optS, optW, optE;
    var pathIn, astrPath;

    var xa, ya, x2p, y2p, p2x, p2y;

    var dragOptions = {
            setCursor: updateDragMode,
            element: shapePath.node(),
            prepFn: startDrag,
            doneFn: endDrag
        },
        dragBBox = dragOptions.element.getBoundingClientRect(),
        dragMode;

    dragElement.init(dragOptions);

    function updateDragMode(evt) {
        // choose 'move' or 'resize'
        // based on initial position of cursor within the drag element
        var w = dragBBox.right - dragBBox.left,
            h = dragBBox.bottom - dragBBox.top,
            x = evt.clientX - dragBBox.left,
            y = evt.clientY - dragBBox.top,
            cursor = (w > MINWIDTH && h > MINHEIGHT && !evt.shiftKey) ?
                dragElement.getCursor(x / w, 1 - y / h) :
                'move';

        setCursor(shapePath, cursor);

        // possible values 'move', 'sw', 'w', 'se', 'e', 'ne', 'n', 'nw' and 'w'
        dragMode = cursor.split('-')[0];
    }

    function startDrag(evt) {
        // setup conversion functions
        xa = Axes.getFromId(gd, shapeOptions.xref);
        ya = Axes.getFromId(gd, shapeOptions.yref);

        x2p = helpers.getDataToPixel(gd, xa);
        y2p = helpers.getDataToPixel(gd, ya, true);
        p2x = helpers.getPixelToData(gd, xa);
        p2y = helpers.getPixelToData(gd, ya, true);

        // setup update strings and initial values
        var astr = 'shapes[' + index + ']';
        if(shapeOptions.type === 'path') {
            pathIn = shapeOptions.path;
            astrPath = astr + '.path';
        }
        else {
            x0 = x2p(shapeOptions.x0);
            y0 = y2p(shapeOptions.y0);
            x1 = x2p(shapeOptions.x1);
            y1 = y2p(shapeOptions.y1);

            astrX0 = astr + '.x0';
            astrY0 = astr + '.y0';
            astrX1 = astr + '.x1';
            astrY1 = astr + '.y1';
        }

        if(x0 < x1) {
            w0 = x0; astrW = astr + '.x0'; optW = 'x0';
            e0 = x1; astrE = astr + '.x1'; optE = 'x1';
        }
        else {
            w0 = x1; astrW = astr + '.x1'; optW = 'x1';
            e0 = x0; astrE = astr + '.x0'; optE = 'x0';
        }
        if(y0 < y1) {
            n0 = y0; astrN = astr + '.y0'; optN = 'y0';
            s0 = y1; astrS = astr + '.y1'; optS = 'y1';
        }
        else {
            n0 = y1; astrN = astr + '.y1'; optN = 'y1';
            s0 = y0; astrS = astr + '.y0'; optS = 'y0';
        }

        update = {};

        // setup dragMode and the corresponding handler
        updateDragMode(evt);
        dragOptions.moveFn = (dragMode === 'move') ? moveShape : resizeShape;
    }

    function endDrag(dragged) {
        setCursor(shapePath);
        if(dragged) {
            Plotly.relayout(gd, update);
        }
    }

    function moveShape(dx, dy) {
        if(shapeOptions.type === 'path') {
            var moveX = function moveX(x) { return p2x(x2p(x) + dx); };
            if(xa && xa.type === 'date') moveX = helpers.encodeDate(moveX);

            var moveY = function moveY(y) { return p2y(y2p(y) + dy); };
            if(ya && ya.type === 'date') moveY = helpers.encodeDate(moveY);

            shapeOptions.path = movePath(pathIn, moveX, moveY);
            update[astrPath] = shapeOptions.path;
        }
        else {
            update[astrX0] = shapeOptions.x0 = p2x(x0 + dx);
            update[astrY0] = shapeOptions.y0 = p2y(y0 + dy);
            update[astrX1] = shapeOptions.x1 = p2x(x1 + dx);
            update[astrY1] = shapeOptions.y1 = p2y(y1 + dy);
        }

        shapePath.attr('d', getPathString(gd, shapeOptions));
    }

    function resizeShape(dx, dy) {
        if(shapeOptions.type === 'path') {
            // TODO: implement path resize
            var moveX = function moveX(x) { return p2x(x2p(x) + dx); };
            if(xa && xa.type === 'date') moveX = helpers.encodeDate(moveX);

            var moveY = function moveY(y) { return p2y(y2p(y) + dy); };
            if(ya && ya.type === 'date') moveY = helpers.encodeDate(moveY);

            shapeOptions.path = movePath(pathIn, moveX, moveY);
            update[astrPath] = shapeOptions.path;
        }
        else {
            var newN = (~dragMode.indexOf('n')) ? n0 + dy : n0,
                newS = (~dragMode.indexOf('s')) ? s0 + dy : s0,
                newW = (~dragMode.indexOf('w')) ? w0 + dx : w0,
                newE = (~dragMode.indexOf('e')) ? e0 + dx : e0;

            if(newS - newN > MINHEIGHT) {
                update[astrN] = shapeOptions[optN] = p2y(newN);
                update[astrS] = shapeOptions[optS] = p2y(newS);
            }

            if(newE - newW > MINWIDTH) {
                update[astrW] = shapeOptions[optW] = p2x(newW);
                update[astrE] = shapeOptions[optE] = p2x(newE);
            }
        }

        shapePath.attr('d', getPathString(gd, shapeOptions));
    }
}

function getShapeLayer(gd, index) {
    var shape = gd._fullLayout.shapes[index],
        shapeLayer = gd._fullLayout._shapeUpperLayer;

    if(!shape) {
        Lib.log('getShapeLayer: undefined shape: index', index);
    }
    else if(shape.layer === 'below') {
        shapeLayer = (shape.xref === 'paper' && shape.yref === 'paper') ?
            gd._fullLayout._shapeLowerLayer :
            gd._fullLayout._shapeSubplotLayer;
    }

    return shapeLayer;
}

function isShapeInSubplot(gd, shape, plotinfo) {
    var xa = Axes.getFromId(gd, plotinfo.id, 'x')._id,
        ya = Axes.getFromId(gd, plotinfo.id, 'y')._id,
        isBelow = shape.layer === 'below',
        inSuplotAxis = (xa === shape.xref || ya === shape.yref),
        isNotAnOverlaidSubplot = !!plotinfo.shapelayer;
    return isBelow && inSuplotAxis && isNotAnOverlaidSubplot;
}

function getPathString(gd, options) {
    var type = options.type,
        xa = Axes.getFromId(gd, options.xref),
        ya = Axes.getFromId(gd, options.yref),
        gs = gd._fullLayout._size,
        x2r,
        x2p,
        y2r,
        y2p;

    if(xa) {
        x2r = helpers.shapePositionToRange(xa);
        x2p = function(v) { return xa._offset + xa.r2p(x2r(v, true)); };
    }
    else {
        x2p = function(v) { return gs.l + gs.w * v; };
    }

    if(ya) {
        y2r = helpers.shapePositionToRange(ya);
        y2p = function(v) { return ya._offset + ya.r2p(y2r(v, true)); };
    }
    else {
        y2p = function(v) { return gs.t + gs.h * (1 - v); };
    }

    if(type === 'path') {
        if(xa && xa.type === 'date') x2p = helpers.decodeDate(x2p);
        if(ya && ya.type === 'date') y2p = helpers.decodeDate(y2p);
        return convertPath(options.path, x2p, y2p);
    }

    var x0 = x2p(options.x0),
        x1 = x2p(options.x1),
        y0 = y2p(options.y0),
        y1 = y2p(options.y1);

    if(type === 'line') return 'M' + x0 + ',' + y0 + 'L' + x1 + ',' + y1;
    if(type === 'rect') return 'M' + x0 + ',' + y0 + 'H' + x1 + 'V' + y1 + 'H' + x0 + 'Z';
    // circle
    var cx = (x0 + x1) / 2,
        cy = (y0 + y1) / 2,
        rx = Math.abs(cx - x0),
        ry = Math.abs(cy - y0),
        rArc = 'A' + rx + ',' + ry,
        rightPt = (cx + rx) + ',' + cy,
        topPt = cx + ',' + (cy - ry);
    return 'M' + rightPt + rArc + ' 0 1,1 ' + topPt +
        rArc + ' 0 0,1 ' + rightPt + 'Z';
}


function convertPath(pathIn, x2p, y2p) {
    // convert an SVG path string from data units to pixels
    return pathIn.replace(constants.segmentRE, function(segment) {
        var paramNumber = 0,
            segmentType = segment.charAt(0),
            xParams = constants.paramIsX[segmentType],
            yParams = constants.paramIsY[segmentType],
            nParams = constants.numParams[segmentType];

        var paramString = segment.substr(1).replace(constants.paramRE, function(param) {
            if(xParams[paramNumber]) param = x2p(param);
            else if(yParams[paramNumber]) param = y2p(param);
            paramNumber++;

            if(paramNumber > nParams) param = 'X';
            return param;
        });

        if(paramNumber > nParams) {
            paramString = paramString.replace(/[\s,]*X.*/, '');
            Lib.log('Ignoring extra params in segment ' + segment);
        }

        return segmentType + paramString;
    });
}

function movePath(pathIn, moveX, moveY) {
    return pathIn.replace(constants.segmentRE, function(segment) {
        var paramNumber = 0,
            segmentType = segment.charAt(0),
            xParams = constants.paramIsX[segmentType],
            yParams = constants.paramIsY[segmentType],
            nParams = constants.numParams[segmentType];

        var paramString = segment.substr(1).replace(constants.paramRE, function(param) {
            if(paramNumber >= nParams) return param;

            if(xParams[paramNumber]) param = moveX(param);
            else if(yParams[paramNumber]) param = moveY(param);

            paramNumber++;

            return param;
        });

        return segmentType + paramString;
    });
}

},{"../../lib":610,"../../lib/setcursor":621,"../../plotly":637,"../../plots/cartesian/axes":642,"../color":510,"../dragelement":531,"../drawing":533,"./constants":573,"./defaults":574,"./helpers":576,"./shape_defaults":578,"fast-isnumeric":97}],576:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// special position conversion functions... category axis positions can't be
// specified by their data values, because they don't make a continuous mapping.
// so these have to be specified in terms of the category serial numbers,
// but can take fractional values. Other axis types we specify position based on
// the actual data values.
// TODO: in V2.0 (when log axis ranges are in data units) range and shape position
// will be identical, so rangeToShapePosition and shapePositionToRange can be
// removed entirely.

exports.rangeToShapePosition = function(ax) {
    return (ax.type === 'log') ? ax.r2d : function(v) { return v; };
};

exports.shapePositionToRange = function(ax) {
    return (ax.type === 'log') ? ax.d2r : function(v) { return v; };
};

exports.decodeDate = function(convertToPx) {
    return function(v) {
        if(v.replace) v = v.replace('_', ' ');
        return convertToPx(v);
    };
};

exports.encodeDate = function(convertToDate) {
    return function(v) { return convertToDate(v).replace(' ', '_'); };
};

exports.getDataToPixel = function(gd, axis, isVertical) {
    var gs = gd._fullLayout._size,
        dataToPixel;

    if(axis) {
        var d2r = exports.shapePositionToRange(axis);

        dataToPixel = function(v) {
            return axis._offset + axis.r2p(d2r(v, true));
        };

        if(axis.type === 'date') dataToPixel = exports.decodeDate(dataToPixel);
    }
    else if(isVertical) {
        dataToPixel = function(v) { return gs.t + gs.h * (1 - v); };
    }
    else {
        dataToPixel = function(v) { return gs.l + gs.w * v; };
    }

    return dataToPixel;
};

exports.getPixelToData = function(gd, axis, isVertical) {
    var gs = gd._fullLayout._size,
        pixelToData;

    if(axis) {
        var r2d = exports.rangeToShapePosition(axis);
        pixelToData = function(p) { return r2d(axis.p2r(p - axis._offset)); };
    }
    else if(isVertical) {
        pixelToData = function(p) { return 1 - (p - gs.t) / gs.h; };
    }
    else {
        pixelToData = function(p) { return (p - gs.l) / gs.w; };
    }

    return pixelToData;
};

},{}],577:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var drawModule = require('./draw');

module.exports = {
    moduleType: 'component',
    name: 'shapes',

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    calcAutorange: require('./calc_autorange'),
    draw: drawModule.draw,
    drawOne: drawModule.drawOne
};

},{"./attributes":571,"./calc_autorange":572,"./defaults":574,"./draw":575}],578:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var attributes = require('./attributes');
var helpers = require('./helpers');


module.exports = function handleShapeDefaults(shapeIn, shapeOut, fullLayout, opts, itemOpts) {
    opts = opts || {};
    itemOpts = itemOpts || {};

    function coerce(attr, dflt) {
        return Lib.coerce(shapeIn, shapeOut, attributes, attr, dflt);
    }

    var visible = coerce('visible', !itemOpts.itemIsNotPlainObject);

    if(!visible) return shapeOut;

    coerce('layer');
    coerce('opacity');
    coerce('fillcolor');
    coerce('line.color');
    coerce('line.width');
    coerce('line.dash');

    var dfltType = shapeIn.path ? 'path' : 'rect',
        shapeType = coerce('type', dfltType);

    // positioning
    var axLetters = ['x', 'y'];
    for(var i = 0; i < 2; i++) {
        var axLetter = axLetters[i],
            gdMock = {_fullLayout: fullLayout};

        // xref, yref
        var axRef = Axes.coerceRef(shapeIn, shapeOut, gdMock, axLetter, '', 'paper');

        if(shapeType !== 'path') {
            var dflt0 = 0.25,
                dflt1 = 0.75,
                ax,
                pos2r,
                r2pos;

            if(axRef !== 'paper') {
                ax = Axes.getFromId(gdMock, axRef);
                r2pos = helpers.rangeToShapePosition(ax);
                pos2r = helpers.shapePositionToRange(ax);
            }
            else {
                pos2r = r2pos = Lib.identity;
            }

            // hack until V2.0 when log has regular range behavior - make it look like other
            // ranges to send to coerce, then put it back after
            // this is all to give reasonable default position behavior on log axes, which is
            // a pretty unimportant edge case so we could just ignore this.
            var attr0 = axLetter + '0',
                attr1 = axLetter + '1',
                in0 = shapeIn[attr0],
                in1 = shapeIn[attr1];
            shapeIn[attr0] = pos2r(shapeIn[attr0], true);
            shapeIn[attr1] = pos2r(shapeIn[attr1], true);

            // x0, x1 (and y0, y1)
            Axes.coercePosition(shapeOut, gdMock, coerce, axRef, attr0, dflt0);
            Axes.coercePosition(shapeOut, gdMock, coerce, axRef, attr1, dflt1);

            // hack part 2
            shapeOut[attr0] = r2pos(shapeOut[attr0]);
            shapeOut[attr1] = r2pos(shapeOut[attr1]);
            shapeIn[attr0] = in0;
            shapeIn[attr1] = in1;
        }
    }

    if(shapeType === 'path') {
        coerce('path');
    }
    else {
        Lib.noneOrAll(shapeIn, shapeOut, ['x0', 'x1', 'y0', 'y1']);
    }

    return shapeOut;
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"./attributes":571,"./helpers":576}],579:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var padAttrs = require('../../plots/pad_attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var extendDeep = require('../../lib/extend').extendDeep;
var animationAttrs = require('../../plots/animation_attributes');
var constants = require('./constants');

var stepsAttrs = {
    _isLinkedToArray: 'step',

    method: {
        valType: 'enumerated',
        values: ['restyle', 'relayout', 'animate', 'update'],
        dflt: 'restyle',
        role: 'info',
        description: [
            'Sets the Plotly method to be called when the slider value is changed.'
        ].join(' ')
    },
    args: {
        valType: 'info_array',
        role: 'info',
        freeLength: true,
        items: [
            { valType: 'any' },
            { valType: 'any' },
            { valType: 'any' }
        ],
        description: [
            'Sets the arguments values to be passed to the Plotly',
            'method set in `method` on slide.'
        ].join(' ')
    },
    label: {
        valType: 'string',
        role: 'info',
        description: 'Sets the text label to appear on the slider'
    },
    value: {
        valType: 'string',
        role: 'info',
        description: [
            'Sets the value of the slider step, used to refer to the step programatically.',
            'Defaults to the slider label if not provided.'
        ].join(' ')
    }
};

module.exports = {
    _isLinkedToArray: 'slider',

    visible: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not the slider is visible.'
        ].join(' ')
    },

    active: {
        valType: 'number',
        role: 'info',
        min: 0,
        dflt: 0,
        description: [
            'Determines which button (by index starting from 0) is',
            'considered active.'
        ].join(' ')
    },

    steps: stepsAttrs,

    lenmode: {
        valType: 'enumerated',
        values: ['fraction', 'pixels'],
        role: 'info',
        dflt: 'fraction',
        description: [
            'Determines whether this slider length',
            'is set in units of plot *fraction* or in *pixels.',
            'Use `len` to set the value.'
        ].join(' ')
    },
    len: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: [
            'Sets the length of the slider',
            'This measure excludes the padding of both ends.',
            'That is, the slider\'s length is this length minus the',
            'padding on both ends.'
        ].join(' ')
    },
    x: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 0,
        role: 'style',
        description: 'Sets the x position (in normalized coordinates) of the slider.'
    },
    pad: extendDeep({}, padAttrs, {
        description: 'Set the padding of the slider component along each side.'
    }, {t: {dflt: 20}}),
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'left',
        role: 'info',
        description: [
            'Sets the slider\'s horizontal position anchor.',
            'This anchor binds the `x` position to the *left*, *center*',
            'or *right* of the range selector.'
        ].join(' ')
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 0,
        role: 'style',
        description: 'Sets the y position (in normalized coordinates) of the slider.'
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'top',
        role: 'info',
        description: [
            'Sets the slider\'s vertical position anchor',
            'This anchor binds the `y` position to the *top*, *middle*',
            'or *bottom* of the range selector.'
        ].join(' ')
    },

    transition: {
        duration: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 150,
            description: 'Sets the duration of the slider transition'
        },
        easing: {
            valType: 'enumerated',
            values: animationAttrs.transition.easing.values,
            role: 'info',
            dflt: 'cubic-in-out',
            description: 'Sets the easing function of the slider transition'
        },
    },

    currentvalue: {
        visible: {
            valType: 'boolean',
            role: 'info',
            dflt: true,
            description: [
                'Shows the currently-selected value above the slider.'
            ].join(' ')
        },

        xanchor: {
            valType: 'enumerated',
            values: ['left', 'center', 'right'],
            dflt: 'left',
            role: 'info',
            description: [
                'The alignment of the value readout relative to the length of the slider.'
            ].join(' ')
        },

        offset: {
            valType: 'number',
            dflt: 10,
            role: 'info',
            description: [
                'The amount of space, in pixels, between the current value label',
                'and the slider.'
            ].join(' ')
        },

        prefix: {
            valType: 'string',
            role: 'info',
            description: 'When currentvalue.visible is true, this sets the prefix of the label.'
        },

        suffix: {
            valType: 'string',
            role: 'info',
            description: 'When currentvalue.visible is true, this sets the suffix of the label.'
        },

        font: extendFlat({}, fontAttrs, {
            description: 'Sets the font of the current value label text.'
        }),
    },

    font: extendFlat({}, fontAttrs, {
        description: 'Sets the font of the slider step labels.'
    }),

    activebgcolor: {
        valType: 'color',
        role: 'style',
        dflt: constants.gripBgActiveColor,
        description: [
            'Sets the background color of the slider grip',
            'while dragging.'
        ].join(' ')
    },
    bgcolor: {
        valType: 'color',
        role: 'style',
        dflt: constants.railBgColor,
        description: 'Sets the background color of the slider.'
    },
    bordercolor: {
        valType: 'color',
        dflt: constants.railBorderColor,
        role: 'style',
        description: 'Sets the color of the border enclosing the slider.'
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: constants.railBorderWidth,
        role: 'style',
        description: 'Sets the width (in px) of the border enclosing the slider.'
    },
    ticklen: {
        valType: 'number',
        min: 0,
        dflt: constants.tickLength,
        role: 'style',
        description: 'Sets the length in pixels of step tick marks'
    },
    tickcolor: {
        valType: 'color',
        dflt: constants.tickColor,
        role: 'style',
        description: 'Sets the color of the border enclosing the slider.'
    },
    tickwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: 'Sets the tick width (in px).'
    },
    minorticklen: {
        valType: 'number',
        min: 0,
        dflt: constants.minorTickLength,
        role: 'style',
        description: 'Sets the length in pixels of minor step tick marks'
    },
};

},{"../../lib/extend":603,"../../plots/animation_attributes":638,"../../plots/font_attributes":662,"../../plots/pad_attributes":701,"./constants":580}],580:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {

    // layout attribute name
    name: 'sliders',

    // class names
    containerClassName: 'slider-container',
    groupClassName: 'slider-group',
    inputAreaClass: 'slider-input-area',
    railRectClass: 'slider-rail-rect',
    railTouchRectClass: 'slider-rail-touch-rect',
    gripRectClass: 'slider-grip-rect',
    tickRectClass: 'slider-tick-rect',
    inputProxyClass: 'slider-input-proxy',
    labelsClass: 'slider-labels',
    labelGroupClass: 'slider-label-group',
    labelClass: 'slider-label',
    currentValueClass: 'slider-current-value',

    railHeight: 5,

    // DOM attribute name in button group keeping track
    // of active update menu
    menuIndexAttrName: 'slider-active-index',

    // id root pass to Plots.autoMargin
    autoMarginIdRoot: 'slider-',

    // min item width / height
    minWidth: 30,
    minHeight: 30,

    // padding around item text
    textPadX: 40,

    // font size to height scale
    fontSizeToHeight: 1.3,

    // arrow offset off right edge
    arrowOffsetX: 4,

    railRadius: 2,
    railWidth: 5,
    railBorder: 4,
    railBorderWidth: 1,
    railBorderColor: '#bec8d9',
    railBgColor: '#f8fafc',

    // The distance of the rail from the edge of the touchable area
    // Slightly less than the step inset because of the curved edges
    // of the rail
    railInset: 8,

    // The distance from the extremal tick marks to the edge of the
    // touchable area. This is basically the same as the grip radius,
    // but for other styles it wouldn't really need to be.
    stepInset: 10,

    gripRadius: 10,
    gripWidth: 20,
    gripHeight: 20,
    gripBorder: 20,
    gripBorderWidth: 1,
    gripBorderColor: '#bec8d9',
    gripBgColor: '#f6f8fa',
    gripBgActiveColor: '#dbdde0',

    labelPadding: 8,
    labelOffset: 0,

    tickWidth: 1,
    tickColor: '#333',
    tickOffset: 25,
    tickLength: 7,

    minorTickOffset: 25,
    minorTickColor: '#333',
    minorTickLength: 4,

    // Extra space below the current value label:
    currentValuePadding: 8,
    currentValueInset: 0,
};

},{}],581:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');

var attributes = require('./attributes');
var constants = require('./constants');

var name = constants.name;
var stepAttrs = attributes.steps;


module.exports = function slidersDefaults(layoutIn, layoutOut) {
    var opts = {
        name: name,
        handleItemDefaults: sliderDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

function sliderDefaults(sliderIn, sliderOut, layoutOut) {

    function coerce(attr, dflt) {
        return Lib.coerce(sliderIn, sliderOut, attributes, attr, dflt);
    }

    var steps = stepsDefaults(sliderIn, sliderOut);

    var visible = coerce('visible', steps.length > 0);
    if(!visible) return;

    coerce('active');

    coerce('x');
    coerce('y');
    Lib.noneOrAll(sliderIn, sliderOut, ['x', 'y']);

    coerce('xanchor');
    coerce('yanchor');

    coerce('len');
    coerce('lenmode');

    coerce('pad.t');
    coerce('pad.r');
    coerce('pad.b');
    coerce('pad.l');

    Lib.coerceFont(coerce, 'font', layoutOut.font);

    var currentValueIsVisible = coerce('currentvalue.visible');

    if(currentValueIsVisible) {
        coerce('currentvalue.xanchor');
        coerce('currentvalue.prefix');
        coerce('currentvalue.suffix');
        coerce('currentvalue.offset');

        Lib.coerceFont(coerce, 'currentvalue.font', sliderOut.font);
    }

    coerce('transition.duration');
    coerce('transition.easing');

    coerce('bgcolor');
    coerce('activebgcolor');
    coerce('bordercolor');
    coerce('borderwidth');
    coerce('ticklen');
    coerce('tickwidth');
    coerce('tickcolor');
    coerce('minorticklen');
}

function stepsDefaults(sliderIn, sliderOut) {
    var valuesIn = sliderIn.steps || [],
        valuesOut = sliderOut.steps = [];

    var valueIn, valueOut;

    function coerce(attr, dflt) {
        return Lib.coerce(valueIn, valueOut, stepAttrs, attr, dflt);
    }

    for(var i = 0; i < valuesIn.length; i++) {
        valueIn = valuesIn[i];
        valueOut = {};

        if(!Lib.isPlainObject(valueIn) || !Array.isArray(valueIn.args)) {
            continue;
        }

        coerce('method');
        coerce('args');
        coerce('label', 'step-' + i);
        coerce('value', valueOut.label);

        valuesOut.push(valueOut);
    }

    return valuesOut;
}

},{"../../lib":610,"../../plots/array_container_defaults":639,"./attributes":579,"./constants":580}],582:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plots = require('../../plots/plots');
var Lib = require('../../lib');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var anchorUtils = require('../legend/anchor_utils');

var constants = require('./constants');


module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout,
        sliderData = makeSliderData(fullLayout);

    // draw a container for *all* sliders:
    var sliders = fullLayout._infolayer
        .selectAll('g.' + constants.containerClassName)
        .data(sliderData.length > 0 ? [0] : []);

    sliders.enter().append('g')
        .classed(constants.containerClassName, true)
        .style('cursor', 'ew-resize');

    sliders.exit().remove();

    // If no more sliders, clear the margisn:
    if(sliders.exit().size()) clearPushMargins(gd);

    // Return early if no menus visible:
    if(sliderData.length === 0) return;

    var sliderGroups = sliders.selectAll('g.' + constants.groupClassName)
        .data(sliderData, keyFunction);

    sliderGroups.enter().append('g')
        .classed(constants.groupClassName, true);

    sliderGroups.exit().each(function(sliderOpts) {
        d3.select(this).remove();

        sliderOpts._commandObserver.remove();
        delete sliderOpts._commandObserver;

        Plots.autoMargin(gd, constants.autoMarginIdRoot + sliderOpts._index);
    });

    // Find the dimensions of the sliders:
    for(var i = 0; i < sliderData.length; i++) {
        var sliderOpts = sliderData[i];
        findDimensions(gd, sliderOpts);
    }

    sliderGroups.each(function(sliderOpts) {
        // If it has fewer than two options, it's not really a slider:
        if(sliderOpts.steps.length < 2) return;

        var gSlider = d3.select(this);

        computeLabelSteps(sliderOpts);

        Plots.manageCommandObserver(gd, sliderOpts, sliderOpts.steps, function(data) {
            // NB: Same as below. This is *not* always the same as sliderOpts since
            // if a new set of steps comes in, the reference in this callback would
            // be invalid. We need to refetch it from the slider group, which is
            // the join data that creates this slider. So if this slider still exists,
            // the group should be valid, *to the best of my knowledge.* If not,
            // we'd have to look it up by d3 data join index/key.
            var opts = gSlider.data()[0];

            if(opts.active === data.index) return;
            if(opts._dragging) return;

            setActive(gd, gSlider, opts, data.index, false, true);
        });

        drawSlider(gd, d3.select(this), sliderOpts);

        // makeInputProxy(gd, d3.select(this), sliderOpts);
    });
};

/* function makeInputProxy(gd, sliderGroup, sliderOpts) {
    sliderOpts.inputProxy = gd._fullLayout._paperdiv.selectAll('input.' + constants.inputProxyClass)
        .data([0]);
}*/

// This really only just filters by visibility:
function makeSliderData(fullLayout) {
    var contOpts = fullLayout[constants.name],
        sliderData = [];

    for(var i = 0; i < contOpts.length; i++) {
        var item = contOpts[i];
        if(!item.visible || !item.steps.length) continue;
        sliderData.push(item);
    }

    return sliderData;
}

// This is set in the defaults step:
function keyFunction(opts) {
    return opts._index;
}

// Compute the dimensions (mutates sliderOpts):
function findDimensions(gd, sliderOpts) {
    var sliderLabels = gd._tester.selectAll('g.' + constants.labelGroupClass)
        .data(sliderOpts.steps);

    sliderLabels.enter().append('g')
        .classed(constants.labelGroupClass, true);

    // loop over fake buttons to find width / height
    var maxLabelWidth = 0;
    var labelHeight = 0;
    sliderLabels.each(function(stepOpts) {
        var labelGroup = d3.select(this);

        var text = drawLabel(labelGroup, {step: stepOpts}, sliderOpts);

        var tWidth = (text.node() && Drawing.bBox(text.node()).width) || 0;

        // This just overwrites with the last. Which is fine as long as
        // the bounding box (probably incorrectly) measures the text *on
        // a single line*:
        labelHeight = (text.node() && Drawing.bBox(text.node()).height) || 0;

        maxLabelWidth = Math.max(maxLabelWidth, tWidth);
    });

    sliderLabels.remove();

    sliderOpts.inputAreaWidth = Math.max(
        constants.railWidth,
        constants.gripHeight
    );

    sliderOpts.currentValueMaxWidth = 0;
    sliderOpts.currentValueHeight = 0;
    sliderOpts.currentValueTotalHeight = 0;

    if(sliderOpts.currentvalue.visible) {
        // Get the dimensions of the current value label:
        var dummyGroup = gd._tester.append('g');

        sliderLabels.each(function(stepOpts) {
            var curValPrefix = drawCurrentValue(dummyGroup, sliderOpts, stepOpts.label);
            var curValSize = (curValPrefix.node() && Drawing.bBox(curValPrefix.node())) || {width: 0, height: 0};
            sliderOpts.currentValueMaxWidth = Math.max(sliderOpts.currentValueMaxWidth, Math.ceil(curValSize.width));
            sliderOpts.currentValueHeight = Math.max(sliderOpts.currentValueHeight, Math.ceil(curValSize.height));
        });

        sliderOpts.currentValueTotalHeight = sliderOpts.currentValueHeight + sliderOpts.currentvalue.offset;

        dummyGroup.remove();
    }

    var graphSize = gd._fullLayout._size;
    sliderOpts.lx = graphSize.l + graphSize.w * sliderOpts.x;
    sliderOpts.ly = graphSize.t + graphSize.h * (1 - sliderOpts.y);

    if(sliderOpts.lenmode === 'fraction') {
        // fraction:
        sliderOpts.outerLength = Math.round(graphSize.w * sliderOpts.len);
    } else {
        // pixels:
        sliderOpts.outerLength = sliderOpts.len;
    }

    // Set the length-wise padding so that the grip ends up *on* the end of
    // the bar when at either extreme
    sliderOpts.lenPad = Math.round(constants.gripWidth * 0.5);

    // The length of the rail, *excluding* padding on either end:
    sliderOpts.inputAreaStart = 0;
    sliderOpts.inputAreaLength = Math.round(sliderOpts.outerLength - sliderOpts.pad.l - sliderOpts.pad.r);

    var textableInputLength = sliderOpts.inputAreaLength - 2 * constants.stepInset;
    var availableSpacePerLabel = textableInputLength / (sliderOpts.steps.length - 1);
    var computedSpacePerLabel = maxLabelWidth + constants.labelPadding;
    sliderOpts.labelStride = Math.max(1, Math.ceil(computedSpacePerLabel / availableSpacePerLabel));
    sliderOpts.labelHeight = labelHeight;

    sliderOpts.height = sliderOpts.currentValueTotalHeight + constants.tickOffset + sliderOpts.ticklen + constants.labelOffset + sliderOpts.labelHeight + sliderOpts.pad.t + sliderOpts.pad.b;

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(sliderOpts)) {
        sliderOpts.lx -= sliderOpts.outerLength;
        xanchor = 'right';
    }
    if(anchorUtils.isCenterAnchor(sliderOpts)) {
        sliderOpts.lx -= sliderOpts.outerLength / 2;
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(sliderOpts)) {
        sliderOpts.ly -= sliderOpts.height;
        yanchor = 'bottom';
    }
    if(anchorUtils.isMiddleAnchor(sliderOpts)) {
        sliderOpts.ly -= sliderOpts.height / 2;
        yanchor = 'middle';
    }

    sliderOpts.outerLength = Math.ceil(sliderOpts.outerLength);
    sliderOpts.height = Math.ceil(sliderOpts.height);
    sliderOpts.lx = Math.round(sliderOpts.lx);
    sliderOpts.ly = Math.round(sliderOpts.ly);

    Plots.autoMargin(gd, constants.autoMarginIdRoot + sliderOpts._index, {
        x: sliderOpts.x,
        y: sliderOpts.y,
        l: sliderOpts.outerLength * ({right: 1, center: 0.5}[xanchor] || 0),
        r: sliderOpts.outerLength * ({left: 1, center: 0.5}[xanchor] || 0),
        b: sliderOpts.height * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: sliderOpts.height * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

function drawSlider(gd, sliderGroup, sliderOpts) {
    // This is related to the other long notes in this file regarding what happens
    // when slider steps disappear. This particular fix handles what happens when
    // the *current* slider step is removed. The drawing functions will error out
    // when they fail to find it, so the fix for now is that it will just draw the
    // slider in the first position but will not execute the command.
    if(sliderOpts.active >= sliderOpts.steps.length) {
        sliderOpts.active = 0;
    }

    // These are carefully ordered for proper z-ordering:
    sliderGroup
        .call(drawCurrentValue, sliderOpts)
        .call(drawRail, sliderOpts)
        .call(drawLabelGroup, sliderOpts)
        .call(drawTicks, sliderOpts)
        .call(drawTouchRect, gd, sliderOpts)
        .call(drawGrip, gd, sliderOpts);

    // Position the rectangle:
    Lib.setTranslate(sliderGroup, sliderOpts.lx + sliderOpts.pad.l, sliderOpts.ly + sliderOpts.pad.t);

    sliderGroup.call(setGripPosition, sliderOpts, sliderOpts.active / (sliderOpts.steps.length - 1), false);
    sliderGroup.call(drawCurrentValue, sliderOpts);

}

function drawCurrentValue(sliderGroup, sliderOpts, valueOverride) {
    if(!sliderOpts.currentvalue.visible) return;

    var x0, textAnchor;
    var text = sliderGroup.selectAll('text')
        .data([0]);

    switch(sliderOpts.currentvalue.xanchor) {
        case 'right':
            // This is anchored left and adjusted by the width of the longest label
            // so that the prefix doesn't move. The goal of this is to emphasize
            // what's actually changing and make the update less distracting.
            x0 = sliderOpts.inputAreaLength - constants.currentValueInset - sliderOpts.currentValueMaxWidth;
            textAnchor = 'left';
            break;
        case 'center':
            x0 = sliderOpts.inputAreaLength * 0.5;
            textAnchor = 'middle';
            break;
        default:
            x0 = constants.currentValueInset;
            textAnchor = 'left';
    }

    text.enter().append('text')
        .classed(constants.labelClass, true)
        .classed('user-select-none', true)
        .attr('text-anchor', textAnchor);

    var str = sliderOpts.currentvalue.prefix ? sliderOpts.currentvalue.prefix : '';

    if(typeof valueOverride === 'string') {
        str += valueOverride;
    } else {
        var curVal = sliderOpts.steps[sliderOpts.active].label;
        str += curVal;
    }

    if(sliderOpts.currentvalue.suffix) {
        str += sliderOpts.currentvalue.suffix;
    }

    text.call(Drawing.font, sliderOpts.currentvalue.font)
        .text(str)
        .call(svgTextUtils.convertToTspans);

    Lib.setTranslate(text, x0, sliderOpts.currentValueHeight);

    return text;
}

function drawGrip(sliderGroup, gd, sliderOpts) {
    var grip = sliderGroup.selectAll('rect.' + constants.gripRectClass)
        .data([0]);

    grip.enter().append('rect')
        .classed(constants.gripRectClass, true)
        .call(attachGripEvents, gd, sliderGroup, sliderOpts)
        .style('pointer-events', 'all');

    grip.attr({
        width: constants.gripWidth,
        height: constants.gripHeight,
        rx: constants.gripRadius,
        ry: constants.gripRadius,
    })
        .call(Color.stroke, sliderOpts.bordercolor)
        .call(Color.fill, sliderOpts.bgcolor)
        .style('stroke-width', sliderOpts.borderwidth + 'px');
}

function drawLabel(item, data, sliderOpts) {
    var text = item.selectAll('text')
        .data([0]);

    text.enter().append('text')
        .classed(constants.labelClass, true)
        .classed('user-select-none', true)
        .attr('text-anchor', 'middle');

    text.call(Drawing.font, sliderOpts.font)
        .text(data.step.label)
        .call(svgTextUtils.convertToTspans);

    return text;
}

function drawLabelGroup(sliderGroup, sliderOpts) {
    var labels = sliderGroup.selectAll('g.' + constants.labelsClass)
        .data([0]);

    labels.enter().append('g')
        .classed(constants.labelsClass, true);

    var labelItems = labels.selectAll('g.' + constants.labelGroupClass)
        .data(sliderOpts.labelSteps);

    labelItems.enter().append('g')
        .classed(constants.labelGroupClass, true);

    labelItems.exit().remove();

    labelItems.each(function(d) {
        var item = d3.select(this);

        item.call(drawLabel, d, sliderOpts);

        Lib.setTranslate(item,
            normalizedValueToPosition(sliderOpts, d.fraction),
            constants.tickOffset + sliderOpts.ticklen + sliderOpts.labelHeight + constants.labelOffset + sliderOpts.currentValueTotalHeight
        );
    });

}

function handleInput(gd, sliderGroup, sliderOpts, normalizedPosition, doTransition) {
    var quantizedPosition = Math.round(normalizedPosition * (sliderOpts.steps.length - 1));

    if(quantizedPosition !== sliderOpts.active) {
        setActive(gd, sliderGroup, sliderOpts, quantizedPosition, true, doTransition);
    }
}

function setActive(gd, sliderGroup, sliderOpts, index, doCallback, doTransition) {
    var previousActive = sliderOpts.active;
    sliderOpts._input.active = sliderOpts.active = index;

    var step = sliderOpts.steps[sliderOpts.active];

    sliderGroup.call(setGripPosition, sliderOpts, sliderOpts.active / (sliderOpts.steps.length - 1), doTransition);
    sliderGroup.call(drawCurrentValue, sliderOpts);

    gd.emit('plotly_sliderchange', {
        slider: sliderOpts,
        step: sliderOpts.steps[sliderOpts.active],
        interaction: doCallback,
        previousActive: previousActive
    });

    if(step && step.method && doCallback) {
        if(sliderGroup._nextMethod) {
            // If we've already queued up an update, just overwrite it with the most recent:
            sliderGroup._nextMethod.step = step;
            sliderGroup._nextMethod.doCallback = doCallback;
            sliderGroup._nextMethod.doTransition = doTransition;
        } else {
            sliderGroup._nextMethod = {step: step, doCallback: doCallback, doTransition: doTransition};
            sliderGroup._nextMethodRaf = window.requestAnimationFrame(function() {
                var _step = sliderGroup._nextMethod.step;
                if(!_step.method) return;

                Plots.executeAPICommand(gd, _step.method, _step.args);

                sliderGroup._nextMethod = null;
                sliderGroup._nextMethodRaf = null;
            });
        }
    }
}

function attachGripEvents(item, gd, sliderGroup) {
    var node = sliderGroup.node();
    var $gd = d3.select(gd);

    // NB: This is *not* the same as sliderOpts itself! These callbacks
    // are in a closure so this array won't actually be correct if the
    // steps have changed since this was initialized. The sliderGroup,
    // however, has not changed since that *is* the slider, so it must
    // be present to receive mouse events.
    function getSliderOpts() {
        return sliderGroup.data()[0];
    }

    item.on('mousedown', function() {
        var sliderOpts = getSliderOpts();
        gd.emit('plotly_sliderstart', {slider: sliderOpts});

        var grip = sliderGroup.select('.' + constants.gripRectClass);

        d3.event.stopPropagation();
        d3.event.preventDefault();
        grip.call(Color.fill, sliderOpts.activebgcolor);

        var normalizedPosition = positionToNormalizedValue(sliderOpts, d3.mouse(node)[0]);
        handleInput(gd, sliderGroup, sliderOpts, normalizedPosition, true);
        sliderOpts._dragging = true;

        $gd.on('mousemove', function() {
            var sliderOpts = getSliderOpts();
            var normalizedPosition = positionToNormalizedValue(sliderOpts, d3.mouse(node)[0]);
            handleInput(gd, sliderGroup, sliderOpts, normalizedPosition, false);
        });

        $gd.on('mouseup', function() {
            var sliderOpts = getSliderOpts();
            sliderOpts._dragging = false;
            grip.call(Color.fill, sliderOpts.bgcolor);
            $gd.on('mouseup', null);
            $gd.on('mousemove', null);

            gd.emit('plotly_sliderend', {
                slider: sliderOpts,
                step: sliderOpts.steps[sliderOpts.active]
            });
        });
    });
}

function drawTicks(sliderGroup, sliderOpts) {
    var tick = sliderGroup.selectAll('rect.' + constants.tickRectClass)
        .data(sliderOpts.steps);

    tick.enter().append('rect')
        .classed(constants.tickRectClass, true);

    tick.exit().remove();

    tick.attr({
        width: sliderOpts.tickwidth + 'px',
        'shape-rendering': 'crispEdges'
    });

    tick.each(function(d, i) {
        var isMajor = i % sliderOpts.labelStride === 0;
        var item = d3.select(this);

        item
            .attr({height: isMajor ? sliderOpts.ticklen : sliderOpts.minorticklen})
            .call(Color.fill, isMajor ? sliderOpts.tickcolor : sliderOpts.tickcolor);

        Lib.setTranslate(item,
            normalizedValueToPosition(sliderOpts, i / (sliderOpts.steps.length - 1)) - 0.5 * sliderOpts.tickwidth,
            (isMajor ? constants.tickOffset : constants.minorTickOffset) + sliderOpts.currentValueTotalHeight
        );
    });

}

function computeLabelSteps(sliderOpts) {
    sliderOpts.labelSteps = [];
    var i0 = 0;
    var nsteps = sliderOpts.steps.length;

    for(var i = i0; i < nsteps; i += sliderOpts.labelStride) {
        sliderOpts.labelSteps.push({
            fraction: i / (nsteps - 1),
            step: sliderOpts.steps[i]
        });
    }
}

function setGripPosition(sliderGroup, sliderOpts, position, doTransition) {
    var grip = sliderGroup.select('rect.' + constants.gripRectClass);

    var x = normalizedValueToPosition(sliderOpts, position);

    // If this is true, then *this component* is already invoking its own command
    // and has triggered its own animation.
    if(sliderOpts._invokingCommand) return;

    var el = grip;
    if(doTransition && sliderOpts.transition.duration > 0) {
        el = el.transition()
            .duration(sliderOpts.transition.duration)
            .ease(sliderOpts.transition.easing);
    }

    // Lib.setTranslate doesn't work here becasue of the transition duck-typing.
    // It's also not necessary because there are no other transitions to preserve.
    el.attr('transform', 'translate(' + (x - constants.gripWidth * 0.5) + ',' + (sliderOpts.currentValueTotalHeight) + ')');
}

// Convert a number from [0-1] to a pixel position relative to the slider group container:
function normalizedValueToPosition(sliderOpts, normalizedPosition) {
    return sliderOpts.inputAreaStart + constants.stepInset +
        (sliderOpts.inputAreaLength - 2 * constants.stepInset) * Math.min(1, Math.max(0, normalizedPosition));
}

// Convert a position relative to the slider group to a nubmer in [0, 1]
function positionToNormalizedValue(sliderOpts, position) {
    return Math.min(1, Math.max(0, (position - constants.stepInset - sliderOpts.inputAreaStart) / (sliderOpts.inputAreaLength - 2 * constants.stepInset - 2 * sliderOpts.inputAreaStart)));
}

function drawTouchRect(sliderGroup, gd, sliderOpts) {
    var rect = sliderGroup.selectAll('rect.' + constants.railTouchRectClass)
        .data([0]);

    rect.enter().append('rect')
        .classed(constants.railTouchRectClass, true)
        .call(attachGripEvents, gd, sliderGroup, sliderOpts)
        .style('pointer-events', 'all');

    rect.attr({
        width: sliderOpts.inputAreaLength,
        height: Math.max(sliderOpts.inputAreaWidth, constants.tickOffset + sliderOpts.ticklen + sliderOpts.labelHeight)
    })
        .call(Color.fill, sliderOpts.bgcolor)
        .attr('opacity', 0);

    Lib.setTranslate(rect, 0, sliderOpts.currentValueTotalHeight);
}

function drawRail(sliderGroup, sliderOpts) {
    var rect = sliderGroup.selectAll('rect.' + constants.railRectClass)
        .data([0]);

    rect.enter().append('rect')
        .classed(constants.railRectClass, true);

    var computedLength = sliderOpts.inputAreaLength - constants.railInset * 2;

    rect.attr({
        width: computedLength,
        height: constants.railWidth,
        rx: constants.railRadius,
        ry: constants.railRadius,
        'shape-rendering': 'crispEdges'
    })
        .call(Color.stroke, sliderOpts.bordercolor)
        .call(Color.fill, sliderOpts.bgcolor)
        .style('stroke-width', sliderOpts.borderwidth + 'px');

    Lib.setTranslate(rect,
        constants.railInset,
        (sliderOpts.inputAreaWidth - constants.railWidth) * 0.5 + sliderOpts.currentValueTotalHeight
    );
}

function clearPushMargins(gd) {
    var pushMargins = gd._fullLayout._pushmargin || {},
        keys = Object.keys(pushMargins);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        if(k.indexOf(constants.autoMarginIdRoot) !== -1) {
            Plots.autoMargin(gd, k);
        }
    }
}

},{"../../lib":610,"../../lib/svg_text_utils":625,"../../plots/plots":702,"../color":510,"../drawing":533,"../legend/anchor_utils":546,"./constants":580,"d3":86}],583:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var constants = require('./constants');

module.exports = {
    moduleType: 'component',
    name: constants.name,

    layoutAttributes: require('./attributes'),
    supplyLayoutDefaults: require('./defaults'),

    draw: require('./draw')
};

},{"./attributes":579,"./constants":580,"./defaults":581,"./draw":582}],584:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Plotly = require('../../plotly');
var Plots = require('../../plots/plots');
var Lib = require('../../lib');
var Drawing = require('../drawing');
var Color = require('../color');
var svgTextUtils = require('../../lib/svg_text_utils');


var Titles = module.exports = {};

/**
 * Titles - (re)draw titles on the axes and plot:
 * @param {DOM element} gd - the graphDiv
 * @param {string} titleClass - the css class of this title
 * @param {object} options - how and what to draw
 *      propContainer - the layout object containing `title` and `titlefont`
 *          attributes that apply to this title
 *      propName - the full name of the title property (for Plotly.relayout)
 *      [traceIndex] - include only if this property applies to one trace
 *          (such as a colorbar title) - then editing pipes to Plotly.restyle
 *          instead of Plotly.relayout
 *      dfltName - the name of the title in placeholder text
 *      [avoid] {object} - include if this title should move to avoid other elements
 *          selection - d3 selection of elements to avoid
 *          side - which direction to move if there is a conflict
 *          [offsetLeft] - if these elements are subject to a translation
 *              wrt the title element
 *          [offsetTop]
 *      attributes {object} - position and alignment attributes
 *          x - pixels
 *          y - pixels
 *          text-anchor - start|middle|end
 *      transform {object} - how to transform the title after positioning
 *          rotate - degrees
 *          offset - shift up/down in the rotated frame (unused?)
 *      containerGroup - if an svg <g> element already exists to hold this
 *          title, include here. Otherwise it will go in fullLayout._infolayer
 */
Titles.draw = function(gd, titleClass, options) {
    var cont = options.propContainer,
        prop = options.propName,
        traceIndex = options.traceIndex,
        name = options.dfltName,
        avoid = options.avoid || {},
        attributes = options.attributes,
        transform = options.transform,
        group = options.containerGroup,

        fullLayout = gd._fullLayout,
        font = cont.titlefont.family,
        fontSize = cont.titlefont.size,
        fontColor = cont.titlefont.color,

        opacity = 1,
        isplaceholder = false,
        txt = cont.title.trim();
    if(txt === '') opacity = 0;
    if(txt.match(/Click to enter .+ title/)) {
        opacity = 0.2;
        isplaceholder = true;
    }

    if(!group) {
        group = fullLayout._infolayer.selectAll('.g-' + titleClass)
            .data([0]);
        group.enter().append('g')
            .classed('g-' + titleClass, true);
    }

    var el = group.selectAll('text')
        .data([0]);
    el.enter().append('text');
    el.text(txt)
        // this is hacky, but convertToTspans uses the class
        // to determine whether to rotate mathJax...
        // so we need to clear out any old class and put the
        // correct one (only relevant for colorbars, at least
        // for now) - ie don't use .classed
        .attr('class', titleClass);

    function titleLayout(titleEl) {
        Lib.syncOrAsync([drawTitle, scootTitle], titleEl);
    }

    function drawTitle(titleEl) {
        titleEl.attr('transform', transform ?
            'rotate(' + [transform.rotate, attributes.x, attributes.y] +
                ') translate(0, ' + transform.offset + ')' :
            null);

        titleEl.style({
            'font-family': font,
            'font-size': d3.round(fontSize, 2) + 'px',
            fill: Color.rgb(fontColor),
            opacity: opacity * Color.opacity(fontColor),
            'font-weight': Plots.fontWeight
        })
        .attr(attributes)
        .call(svgTextUtils.convertToTspans)
        .attr(attributes);

        titleEl.selectAll('tspan.line')
            .attr(attributes);
        return Plots.previousPromises(gd);
    }

    function scootTitle(titleElIn) {
        var titleGroup = d3.select(titleElIn.node().parentNode);

        if(avoid && avoid.selection && avoid.side && txt) {
            titleGroup.attr('transform', null);

            // move toward avoid.side (= left, right, top, bottom) if needed
            // can include pad (pixels, default 2)
            var shift = 0,
                backside = {
                    left: 'right',
                    right: 'left',
                    top: 'bottom',
                    bottom: 'top'
                }[avoid.side],
                shiftSign = (['left', 'top'].indexOf(avoid.side) !== -1) ?
                    -1 : 1,
                pad = isNumeric(avoid.pad) ? avoid.pad : 2,
                titlebb = Drawing.bBox(titleGroup.node()),
                paperbb = {
                    left: 0,
                    top: 0,
                    right: fullLayout.width,
                    bottom: fullLayout.height
                },
                maxshift = avoid.maxShift || (
                    (paperbb[avoid.side] - titlebb[avoid.side]) *
                    ((avoid.side === 'left' || avoid.side === 'top') ? -1 : 1));
            // Prevent the title going off the paper
            if(maxshift < 0) shift = maxshift;
            else {
                // so we don't have to offset each avoided element,
                // give the title the opposite offset
                titlebb.left -= avoid.offsetLeft;
                titlebb.right -= avoid.offsetLeft;
                titlebb.top -= avoid.offsetTop;
                titlebb.bottom -= avoid.offsetTop;

                // iterate over a set of elements (avoid.selection)
                // to avoid collisions with
                avoid.selection.each(function() {
                    var avoidbb = Drawing.bBox(this);

                    if(Lib.bBoxIntersect(titlebb, avoidbb, pad)) {
                        shift = Math.max(shift, shiftSign * (
                            avoidbb[avoid.side] - titlebb[backside]) + pad);
                    }
                });
                shift = Math.min(maxshift, shift);
            }
            if(shift > 0 || maxshift < 0) {
                var shiftTemplate = {
                    left: [-shift, 0],
                    right: [shift, 0],
                    top: [0, -shift],
                    bottom: [0, shift]
                }[avoid.side];
                titleGroup.attr('transform',
                    'translate(' + shiftTemplate + ')');
            }
        }
    }

    el.attr({'data-unformatted': txt})
        .call(titleLayout);

    var placeholderText = 'Click to enter ' + name + ' title';

    function setPlaceholder() {
        opacity = 0;
        isplaceholder = true;
        txt = placeholderText;
        fullLayout._infolayer.select('.' + titleClass)
            .attr({'data-unformatted': txt})
            .text(txt)
            .on('mouseover.opacity', function() {
                d3.select(this).transition()
                    .duration(100).style('opacity', 1);
            })
            .on('mouseout.opacity', function() {
                d3.select(this).transition()
                    .duration(1000).style('opacity', 0);
            });
    }

    if(gd._context.editable) {
        if(!txt) setPlaceholder();

        el.call(svgTextUtils.makeEditable)
            .on('edit', function(text) {
                if(traceIndex !== undefined) Plotly.restyle(gd, prop, text, traceIndex);
                else Plotly.relayout(gd, prop, text);
            })
            .on('cancel', function() {
                this.text(this.attr('data-unformatted'))
                    .call(titleLayout);
            })
            .on('input', function(d) {
                this.text(d || ' ').attr(attributes)
                    .selectAll('tspan.line')
                        .attr(attributes);
            });
    }
    else if(!txt || txt.match(/Click to enter .+ title/)) {
        el.remove();
    }
    el.classed('js-placeholder', isplaceholder);
};

},{"../../lib":610,"../../lib/svg_text_utils":625,"../../plotly":637,"../../plots/plots":702,"../color":510,"../drawing":533,"d3":86,"fast-isnumeric":97}],585:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../../plots/font_attributes');
var colorAttrs = require('../color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;
var padAttrs = require('../../plots/pad_attributes');

var buttonsAttrs = {
    _isLinkedToArray: 'button',

    method: {
        valType: 'enumerated',
        values: ['restyle', 'relayout', 'animate', 'update'],
        dflt: 'restyle',
        role: 'info',
        description: [
            'Sets the Plotly method to be called on click.'
        ].join(' ')
    },
    args: {
        valType: 'info_array',
        role: 'info',
        freeLength: true,
        items: [
            { valType: 'any' },
            { valType: 'any' },
            { valType: 'any' }
        ],
        description: [
            'Sets the arguments values to be passed to the Plotly',
            'method set in `method` on click.'
        ].join(' ')
    },
    label: {
        valType: 'string',
        role: 'info',
        dflt: '',
        description: 'Sets the text label to appear on the button.'
    }
};

module.exports = {
    _isLinkedToArray: 'updatemenu',

    visible: {
        valType: 'boolean',
        role: 'info',
        description: [
            'Determines whether or not the update menu is visible.'
        ].join(' ')
    },

    type: {
        valType: 'enumerated',
        values: ['dropdown', 'buttons'],
        dflt: 'dropdown',
        role: 'info',
        description: [
            'Determines whether the buttons are accessible via a dropdown menu',
            'or whether the buttons are stacked horizontally or vertically'
        ].join(' ')
    },

    direction: {
        valType: 'enumerated',
        values: ['left', 'right', 'up', 'down'],
        dflt: 'down',
        role: 'info',
        description: [
            'Determines the direction in which the buttons are laid out, whether',
            'in a dropdown menu or a row/column of buttons. For `left` and `up`,',
            'the buttons will still appear in left-to-right or top-to-bottom order',
            'respectively.'
        ].join(' ')
    },

    active: {
        valType: 'integer',
        role: 'info',
        min: -1,
        dflt: 0,
        description: [
            'Determines which button (by index starting from 0) is',
            'considered active.'
        ].join(' ')
    },

    showactive: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: 'Highlights active dropdown item or active button if true.'
    },

    buttons: buttonsAttrs,

    x: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: -0.05,
        role: 'style',
        description: 'Sets the x position (in normalized coordinates) of the update menu.'
    },
    xanchor: {
        valType: 'enumerated',
        values: ['auto', 'left', 'center', 'right'],
        dflt: 'right',
        role: 'info',
        description: [
            'Sets the update menu\'s horizontal position anchor.',
            'This anchor binds the `x` position to the *left*, *center*',
            'or *right* of the range selector.'
        ].join(' ')
    },
    y: {
        valType: 'number',
        min: -2,
        max: 3,
        dflt: 1,
        role: 'style',
        description: 'Sets the y position (in normalized coordinates) of the update menu.'
    },
    yanchor: {
        valType: 'enumerated',
        values: ['auto', 'top', 'middle', 'bottom'],
        dflt: 'top',
        role: 'info',
        description: [
            'Sets the update menu\'s vertical position anchor',
            'This anchor binds the `y` position to the *top*, *middle*',
            'or *bottom* of the range selector.'
        ].join(' ')
    },

    pad: extendFlat({}, padAttrs, {
        description: 'Sets the padding around the buttons or dropdown menu.'
    }),

    font: extendFlat({}, fontAttrs, {
        description: 'Sets the font of the update menu button text.'
    }),

    bgcolor: {
        valType: 'color',
        role: 'style',
        description: 'Sets the background color of the update menu buttons.'
    },
    bordercolor: {
        valType: 'color',
        dflt: colorAttrs.borderLine,
        role: 'style',
        description: 'Sets the color of the border enclosing the update menu.'
    },
    borderwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: 'Sets the width (in px) of the border enclosing the update menu.'
    }
};

},{"../../lib/extend":603,"../../plots/font_attributes":662,"../../plots/pad_attributes":701,"../color/attributes":509}],586:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {

    // layout attribute name
    name: 'updatemenus',

    // class names
    containerClassName: 'updatemenu-container',
    headerGroupClassName: 'updatemenu-header-group',
    headerClassName: 'updatemenu-header',
    headerArrowClassName: 'updatemenu-header-arrow',
    dropdownButtonGroupClassName: 'updatemenu-dropdown-button-group',
    dropdownButtonClassName: 'updatemenu-dropdown-button',
    buttonClassName: 'updatemenu-button',
    itemRectClassName: 'updatemenu-item-rect',
    itemTextClassName: 'updatemenu-item-text',

    // DOM attribute name in button group keeping track
    // of active update menu
    menuIndexAttrName: 'updatemenu-active-index',

    // id root pass to Plots.autoMargin
    autoMarginIdRoot: 'updatemenu-',

    // options when 'active: -1'
    blankHeaderOpts: { label: '  ' },

    // min item width / height
    minWidth: 30,
    minHeight: 30,

    // padding around item text
    textPadX: 24,
    arrowPadX: 16,

    // font size to height scale
    fontSizeToHeight: 1.3,

    // item rect radii
    rx: 2,
    ry: 2,

    // item  text x offset off left edge
    textOffsetX: 12,

    // item  text y offset (w.r.t. middle)
    textOffsetY: 3,

    // arrow offset off right edge
    arrowOffsetX: 4,

    // gap between header and buttons
    gapButtonHeader: 5,

    // gap between between buttons
    gapButton: 2,

    // color given to active buttons
    activeColor: '#F4FAFF',

    // color given to hovered buttons
    hoverColor: '#F4FAFF'
};

},{}],587:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var handleArrayContainerDefaults = require('../../plots/array_container_defaults');

var attributes = require('./attributes');
var constants = require('./constants');

var name = constants.name;
var buttonAttrs = attributes.buttons;


module.exports = function updateMenusDefaults(layoutIn, layoutOut) {
    var opts = {
        name: name,
        handleItemDefaults: menuDefaults
    };

    handleArrayContainerDefaults(layoutIn, layoutOut, opts);
};

function menuDefaults(menuIn, menuOut, layoutOut) {

    function coerce(attr, dflt) {
        return Lib.coerce(menuIn, menuOut, attributes, attr, dflt);
    }

    var buttons = buttonsDefaults(menuIn, menuOut);

    var visible = coerce('visible', buttons.length > 0);
    if(!visible) return;

    coerce('active');
    coerce('direction');
    coerce('type');
    coerce('showactive');

    coerce('x');
    coerce('y');
    Lib.noneOrAll(menuIn, menuOut, ['x', 'y']);

    coerce('xanchor');
    coerce('yanchor');

    coerce('pad.t');
    coerce('pad.r');
    coerce('pad.b');
    coerce('pad.l');

    Lib.coerceFont(coerce, 'font', layoutOut.font);

    coerce('bgcolor', layoutOut.paper_bgcolor);
    coerce('bordercolor');
    coerce('borderwidth');
}

function buttonsDefaults(menuIn, menuOut) {
    var buttonsIn = menuIn.buttons || [],
        buttonsOut = menuOut.buttons = [];

    var buttonIn, buttonOut;

    function coerce(attr, dflt) {
        return Lib.coerce(buttonIn, buttonOut, buttonAttrs, attr, dflt);
    }

    for(var i = 0; i < buttonsIn.length; i++) {
        buttonIn = buttonsIn[i];
        buttonOut = {};

        if(!Lib.isPlainObject(buttonIn) || !Array.isArray(buttonIn.args)) {
            continue;
        }

        coerce('method');
        coerce('args');
        coerce('label');

        buttonOut._index = i;
        buttonsOut.push(buttonOut);
    }

    return buttonsOut;
}

},{"../../lib":610,"../../plots/array_container_defaults":639,"./attributes":585,"./constants":586}],588:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plots = require('../../plots/plots');
var Lib = require('../../lib');
var Color = require('../color');
var Drawing = require('../drawing');
var svgTextUtils = require('../../lib/svg_text_utils');
var anchorUtils = require('../legend/anchor_utils');

var constants = require('./constants');

module.exports = function draw(gd) {
    var fullLayout = gd._fullLayout,
        menuData = makeMenuData(fullLayout);

    /* Update menu data is bound to the header-group.
     * The items in the header group are always present.
     *
     * Upon clicking on a header its corresponding button
     * data is bound to the button-group.
     *
     * We draw all headers in one group before all buttons
     * so that the buttons *always* appear above the headers.
     *
     * Note that only one set of buttons are visible at once.
     *
     * <g container />
     *
     *     <g header-group />
     *         <g item header />
     *         <text item header-arrow />
     *     <g header-group />
     *         <g item header />
     *         <text item header-arrow />
     *     ...
     *
     *     <g button-group />
     *         <g item button />
     *         <g item button />
     *         ...
     */

    // draw update menu container
    var menus = fullLayout._infolayer
        .selectAll('g.' + constants.containerClassName)
        .data(menuData.length > 0 ? [0] : []);

    menus.enter().append('g')
        .classed(constants.containerClassName, true)
        .style('cursor', 'pointer');

    menus.exit().remove();

    // remove push margin object(s)
    if(menus.exit().size()) clearPushMargins(gd);

    // return early if no update menus are visible
    if(menuData.length === 0) return;

    // join header group
    var headerGroups = menus.selectAll('g.' + constants.headerGroupClassName)
        .data(menuData, keyFunction);

    headerGroups.enter().append('g')
        .classed(constants.headerGroupClassName, true);

    // draw dropdown button container
    var gButton = menus.selectAll('g.' + constants.dropdownButtonGroupClassName)
        .data([0]);

    gButton.enter().append('g')
        .classed(constants.dropdownButtonGroupClassName, true)
        .style('pointer-events', 'all');

    // whenever we add new menu, attach 'state' variable to node
    // to keep track of the active menu ('-1' means no menu is active)
    // and remove all dropped buttons (if any)
    if(headerGroups.enter().size()) {
        gButton
            .call(removeAllButtons)
            .attr(constants.menuIndexAttrName, '-1');
    }

    // remove exiting header, remove dropped buttons and reset margins
    headerGroups.exit().each(function(menuOpts) {
        d3.select(this).remove();

        gButton
            .call(removeAllButtons)
            .attr(constants.menuIndexAttrName, '-1');

        Plots.autoMargin(gd, constants.autoMarginIdRoot + menuOpts._index);
    });

    // find dimensions before plotting anything (this mutates menuOpts)
    for(var i = 0; i < menuData.length; i++) {
        var menuOpts = menuData[i];
        findDimensions(gd, menuOpts);
    }

    // draw headers!
    headerGroups.each(function(menuOpts) {
        var gHeader = d3.select(this);

        var _gButton = menuOpts.type === 'dropdown' ? gButton : null;
        Plots.manageCommandObserver(gd, menuOpts, menuOpts.buttons, function(data) {
            setActive(gd, menuOpts, menuOpts.buttons[data.index], gHeader, _gButton, data.index, true);
        });

        if(menuOpts.type === 'dropdown') {
            drawHeader(gd, gHeader, gButton, menuOpts);

            // update buttons if they are dropped
            if(areMenuButtonsDropped(gButton, menuOpts)) {
                drawButtons(gd, gHeader, gButton, menuOpts);
            }
        } else {
            drawButtons(gd, gHeader, null, menuOpts);
        }

    });
};

function makeMenuData(fullLayout) {
    var contOpts = fullLayout[constants.name],
        menuData = [];

    // Filter visible dropdowns and attach '_index' to each
    // fullLayout options object to be used for 'object constancy'
    // in the data join key function.

    for(var i = 0; i < contOpts.length; i++) {
        var item = contOpts[i];

        if(item.visible) menuData.push(item);
    }

    return menuData;
}

// Note that '_index' is set at the default step,
// it corresponds to the menu index in the user layout update menu container.
// This is a more 'consistent' field than e.g. the index in the menuData.
function keyFunction(opts) {
    return opts._index;
}

function areMenuButtonsDropped(gButton, menuOpts) {
    var droppedIndex = +gButton.attr(constants.menuIndexAttrName);

    return droppedIndex === menuOpts._index;
}

function drawHeader(gd, gHeader, gButton, menuOpts) {
    var header = gHeader.selectAll('g.' + constants.headerClassName)
        .data([0]);

    header.enter().append('g')
        .classed(constants.headerClassName, true)
        .style('pointer-events', 'all');

    var active = menuOpts.active,
        headerOpts = menuOpts.buttons[active] || constants.blankHeaderOpts,
        posOpts = { y: menuOpts.pad.t, yPad: 0, x: menuOpts.pad.l, xPad: 0, index: 0 },
        positionOverrides = {
            width: menuOpts.headerWidth,
            height: menuOpts.headerHeight
        };

    header
        .call(drawItem, menuOpts, headerOpts)
        .call(setItemPosition, menuOpts, posOpts, positionOverrides);

    // draw drop arrow at the right edge
    var arrow = gHeader.selectAll('text.' + constants.headerArrowClassName)
        .data([0]);

    arrow.enter().append('text')
        .classed(constants.headerArrowClassName, true)
        .classed('user-select-none', true)
        .attr('text-anchor', 'end')
        .call(Drawing.font, menuOpts.font)
        .text('▼');

    arrow.attr({
        x: menuOpts.headerWidth - constants.arrowOffsetX + menuOpts.pad.l,
        y: menuOpts.headerHeight / 2 + constants.textOffsetY + menuOpts.pad.t
    });

    header.on('click', function() {
        gButton.call(removeAllButtons);

        // if clicked index is same as dropped index => fold
        // otherwise => drop buttons associated with header
        gButton.attr(
            constants.menuIndexAttrName,
            areMenuButtonsDropped(gButton, menuOpts) ? '-1' : String(menuOpts._index)
        );

        drawButtons(gd, gHeader, gButton, menuOpts);
    });

    header.on('mouseover', function() {
        header.call(styleOnMouseOver);
    });

    header.on('mouseout', function() {
        header.call(styleOnMouseOut, menuOpts);
    });

    // translate header group
    Lib.setTranslate(gHeader, menuOpts.lx, menuOpts.ly);
}

function drawButtons(gd, gHeader, gButton, menuOpts) {
    // If this is a set of buttons, set pointer events = all since we play
    // some minor games with which container is which in order to simplify
    // the drawing of *either* buttons or menus
    if(!gButton) {
        gButton = gHeader;
        gButton.attr('pointer-events', 'all');
    }

    var buttonData = (gButton.attr(constants.menuIndexAttrName) !== '-1' || menuOpts.type === 'buttons') ?
        menuOpts.buttons :
        [];

    var klass = menuOpts.type === 'dropdown' ? constants.dropdownButtonClassName : constants.buttonClassName;

    var buttons = gButton.selectAll('g.' + klass)
        .data(buttonData);

    var enter = buttons.enter().append('g')
        .classed(klass, true);

    var exit = buttons.exit();

    if(menuOpts.type === 'dropdown') {
        enter.attr('opacity', '0')
            .transition()
            .attr('opacity', '1');

        exit.transition()
            .attr('opacity', '0')
            .remove();
    } else {
        exit.remove();
    }


    var x0 = 0;
    var y0 = 0;

    var isVertical = ['up', 'down'].indexOf(menuOpts.direction) !== -1;

    if(menuOpts.type === 'dropdown') {
        if(isVertical) {
            y0 = menuOpts.headerHeight + constants.gapButtonHeader;
        } else {
            x0 = menuOpts.headerWidth + constants.gapButtonHeader;
        }
    }

    if(menuOpts.type === 'dropdown' && menuOpts.direction === 'up') {
        y0 = -constants.gapButtonHeader + constants.gapButton - menuOpts.openHeight;
    }

    if(menuOpts.type === 'dropdown' && menuOpts.direction === 'left') {
        x0 = -constants.gapButtonHeader + constants.gapButton - menuOpts.openWidth;
    }

    var posOpts = {
        x: x0 + menuOpts.pad.l,
        y: y0 + menuOpts.pad.t,
        yPad: constants.gapButton,
        xPad: constants.gapButton,
        index: 0,
    };

    buttons.each(function(buttonOpts, buttonIndex) {
        var button = d3.select(this);

        button
            .call(drawItem, menuOpts, buttonOpts)
            .call(setItemPosition, menuOpts, posOpts);

        button.on('click', function() {
            setActive(gd, menuOpts, buttonOpts, gHeader, gButton, buttonIndex);

            Plots.executeAPICommand(gd, buttonOpts.method, buttonOpts.args);

            gd.emit('plotly_buttonclicked', {menu: menuOpts, button: buttonOpts, active: menuOpts.active});
        });

        button.on('mouseover', function() {
            button.call(styleOnMouseOver);
        });

        button.on('mouseout', function() {
            button.call(styleOnMouseOut, menuOpts);
            buttons.call(styleButtons, menuOpts);
        });
    });

    buttons.call(styleButtons, menuOpts);

    // translate button group
    Lib.setTranslate(gButton, menuOpts.lx, menuOpts.ly);
}

function setActive(gd, menuOpts, buttonOpts, gHeader, gButton, buttonIndex, isSilentUpdate) {
    // update 'active' attribute in menuOpts
    menuOpts._input.active = menuOpts.active = buttonIndex;

    if(menuOpts.type === 'dropdown') {
        // fold up buttons and redraw header
        gButton.attr(constants.menuIndexAttrName, '-1');

        drawHeader(gd, gHeader, gButton, menuOpts);
    }

    if(!isSilentUpdate || menuOpts.type === 'buttons') {
        drawButtons(gd, gHeader, gButton, menuOpts);
    }
}

function drawItem(item, menuOpts, itemOpts) {
    item.call(drawItemRect, menuOpts)
        .call(drawItemText, menuOpts, itemOpts);
}

function drawItemRect(item, menuOpts) {
    var rect = item.selectAll('rect')
        .data([0]);

    rect.enter().append('rect')
        .classed(constants.itemRectClassName, true)
        .attr({
            rx: constants.rx,
            ry: constants.ry,
            'shape-rendering': 'crispEdges'
        });

    rect.call(Color.stroke, menuOpts.bordercolor)
        .call(Color.fill, menuOpts.bgcolor)
        .style('stroke-width', menuOpts.borderwidth + 'px');
}

function drawItemText(item, menuOpts, itemOpts) {
    var text = item.selectAll('text')
        .data([0]);

    text.enter().append('text')
        .classed(constants.itemTextClassName, true)
        .classed('user-select-none', true)
        .attr('text-anchor', 'start');

    text.call(Drawing.font, menuOpts.font)
        .text(itemOpts.label)
        .call(svgTextUtils.convertToTspans);
}

function styleButtons(buttons, menuOpts) {
    var active = menuOpts.active;

    buttons.each(function(buttonOpts, i) {
        var button = d3.select(this);

        if(i === active && menuOpts.showactive) {
            button.select('rect.' + constants.itemRectClassName)
                .call(Color.fill, constants.activeColor);
        }
    });
}

function styleOnMouseOver(item) {
    item.select('rect.' + constants.itemRectClassName)
        .call(Color.fill, constants.hoverColor);
}

function styleOnMouseOut(item, menuOpts) {
    item.select('rect.' + constants.itemRectClassName)
        .call(Color.fill, menuOpts.bgcolor);
}

// find item dimensions (this mutates menuOpts)
function findDimensions(gd, menuOpts) {
    menuOpts.width1 = 0;
    menuOpts.height1 = 0;
    menuOpts.heights = [];
    menuOpts.widths = [];
    menuOpts.totalWidth = 0;
    menuOpts.totalHeight = 0;
    menuOpts.openWidth = 0;
    menuOpts.openHeight = 0;
    menuOpts.lx = 0;
    menuOpts.ly = 0;

    var fakeButtons = gd._tester.selectAll('g.' + constants.dropdownButtonClassName)
        .data(menuOpts.buttons);

    fakeButtons.enter().append('g')
        .classed(constants.dropdownButtonClassName, true);

    var isVertical = ['up', 'down'].indexOf(menuOpts.direction) !== -1;

    // loop over fake buttons to find width / height
    fakeButtons.each(function(buttonOpts, i) {
        var button = d3.select(this);

        button.call(drawItem, menuOpts, buttonOpts);

        var text = button.select('.' + constants.itemTextClassName),
            tspans = text.selectAll('tspan');

        // width is given by max width of all buttons
        var tWidth = text.node() && Drawing.bBox(text.node()).width,
            wEff = Math.max(tWidth + constants.textPadX, constants.minWidth);

        // height is determined by item text
        var tHeight = menuOpts.font.size * constants.fontSizeToHeight,
            tLines = tspans[0].length || 1,
            hEff = Math.max(tHeight * tLines, constants.minHeight) + constants.textOffsetY;

        hEff = Math.ceil(hEff);
        wEff = Math.ceil(wEff);

        // Store per-item sizes since a row of horizontal buttons, for example,
        // don't all need to be the same width:
        menuOpts.widths[i] = wEff;
        menuOpts.heights[i] = hEff;

        // Height and width of individual element:
        menuOpts.height1 = Math.max(menuOpts.height1, hEff);
        menuOpts.width1 = Math.max(menuOpts.width1, wEff);

        if(isVertical) {
            menuOpts.totalWidth = Math.max(menuOpts.totalWidth, wEff);
            menuOpts.openWidth = menuOpts.totalWidth;
            menuOpts.totalHeight += hEff + constants.gapButton;
            menuOpts.openHeight += hEff + constants.gapButton;
        } else {
            menuOpts.totalWidth += wEff + constants.gapButton;
            menuOpts.openWidth += wEff + constants.gapButton;
            menuOpts.totalHeight = Math.max(menuOpts.totalHeight, hEff);
            menuOpts.openHeight = menuOpts.totalHeight;
        }
    });

    if(isVertical) {
        menuOpts.totalHeight -= constants.gapButton;
    } else {
        menuOpts.totalWidth -= constants.gapButton;
    }


    menuOpts.headerWidth = menuOpts.width1 + constants.arrowPadX;
    menuOpts.headerHeight = menuOpts.height1;

    if(menuOpts.type === 'dropdown') {
        if(isVertical) {
            menuOpts.width1 += constants.arrowPadX;
            menuOpts.totalHeight = menuOpts.height1;
        } else {
            menuOpts.totalWidth = menuOpts.width1;
        }
        menuOpts.totalWidth += constants.arrowPadX;
    }

    fakeButtons.remove();

    var paddedWidth = menuOpts.totalWidth + menuOpts.pad.l + menuOpts.pad.r;
    var paddedHeight = menuOpts.totalHeight + menuOpts.pad.t + menuOpts.pad.b;

    var graphSize = gd._fullLayout._size;
    menuOpts.lx = graphSize.l + graphSize.w * menuOpts.x;
    menuOpts.ly = graphSize.t + graphSize.h * (1 - menuOpts.y);

    var xanchor = 'left';
    if(anchorUtils.isRightAnchor(menuOpts)) {
        menuOpts.lx -= paddedWidth;
        xanchor = 'right';
    }
    if(anchorUtils.isCenterAnchor(menuOpts)) {
        menuOpts.lx -= paddedWidth / 2;
        xanchor = 'center';
    }

    var yanchor = 'top';
    if(anchorUtils.isBottomAnchor(menuOpts)) {
        menuOpts.ly -= paddedHeight;
        yanchor = 'bottom';
    }
    if(anchorUtils.isMiddleAnchor(menuOpts)) {
        menuOpts.ly -= paddedHeight / 2;
        yanchor = 'middle';
    }

    menuOpts.totalWidth = Math.ceil(menuOpts.totalWidth);
    menuOpts.totalHeight = Math.ceil(menuOpts.totalHeight);
    menuOpts.lx = Math.round(menuOpts.lx);
    menuOpts.ly = Math.round(menuOpts.ly);

    Plots.autoMargin(gd, constants.autoMarginIdRoot + menuOpts._index, {
        x: menuOpts.x,
        y: menuOpts.y,
        l: paddedWidth * ({right: 1, center: 0.5}[xanchor] || 0),
        r: paddedWidth * ({left: 1, center: 0.5}[xanchor] || 0),
        b: paddedHeight * ({top: 1, middle: 0.5}[yanchor] || 0),
        t: paddedHeight * ({bottom: 1, middle: 0.5}[yanchor] || 0)
    });
}

// set item positions (mutates posOpts)
function setItemPosition(item, menuOpts, posOpts, overrideOpts) {
    overrideOpts = overrideOpts || {};
    var rect = item.select('.' + constants.itemRectClassName),
        text = item.select('.' + constants.itemTextClassName),
        tspans = text.selectAll('tspan'),
        borderWidth = menuOpts.borderwidth,
        index = posOpts.index;

    Lib.setTranslate(item, borderWidth + posOpts.x, borderWidth + posOpts.y);

    var isVertical = ['up', 'down'].indexOf(menuOpts.direction) !== -1;

    rect.attr({
        x: 0,
        y: 0,
        width: overrideOpts.width || (isVertical ? menuOpts.width1 : menuOpts.widths[index]),
        height: overrideOpts.height || (isVertical ? menuOpts.heights[index] : menuOpts.height1)
    });

    var tHeight = menuOpts.font.size * constants.fontSizeToHeight,
        tLines = tspans[0].length || 1,
        spanOffset = ((tLines - 1) * tHeight / 4);

    var textAttrs = {
        x: constants.textOffsetX,
        y: menuOpts.heights[index] / 2 - spanOffset + constants.textOffsetY
    };

    text.attr(textAttrs);
    tspans.attr(textAttrs);

    if(isVertical) {
        posOpts.y += menuOpts.heights[index] + posOpts.yPad;
    } else {
        posOpts.x += menuOpts.widths[index] + posOpts.xPad;
    }

    posOpts.index++;
}

function removeAllButtons(gButton) {
    gButton.selectAll('g.' + constants.dropdownButtonClassName).remove();
}

function clearPushMargins(gd) {
    var pushMargins = gd._fullLayout._pushmargin || {},
        keys = Object.keys(pushMargins);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        if(k.indexOf(constants.autoMarginIdRoot) !== -1) {
            Plots.autoMargin(gd, k);
        }
    }
}

},{"../../lib":610,"../../lib/svg_text_utils":625,"../../plots/plots":702,"../color":510,"../drawing":533,"../legend/anchor_utils":546,"./constants":586,"d3":86}],589:[function(require,module,exports){
arguments[4][583][0].apply(exports,arguments)
},{"./attributes":585,"./constants":586,"./defaults":587,"./draw":588,"dup":583}],590:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = {
    solid: [1],
    dot: [1, 1],
    dash: [4, 1],
    longdash: [8, 1],
    dashdot: [4, 1, 1, 1],
    longdashdot: [8, 1, 1, 1]
};

},{}],591:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = {
    solid: [[], 0],
    dot: [[0.5, 1], 200],
    dash: [[0.5, 1], 50],
    longdash: [[0.5, 1], 10],
    dashdot: [[0.5, 0.625, 0.875, 1], 50],
    longdashdot: [[0.5, 0.7, 0.8, 1], 10]
};

},{}],592:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = {
    circle: '●',
    'circle-open': '○',
    square: '■',
    'square-open': '□',
    diamond: '◆',
    'diamond-open': '◇',
    cross: '+',
    x: '❌'
};

},{}],593:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    /**
     * Standardize all missing data in calcdata to use undefined
     * never null or NaN.
     * That way we can use !==undefined, or !== BADNUM,
     * to test for real data
     */
    BADNUM: undefined,

    /*
     * Limit certain operations to well below floating point max value
     * to avoid glitches: Make sure that even when you multiply it by the
     * number of pixels on a giant screen it still works
     */
    FP_SAFE: Number.MAX_VALUE / 10000,

    /*
     * conversion of date units to milliseconds
     * year and month constants are marked "AVG"
     * to remind us that not all years and months
     * have the same length
     */
    ONEAVGYEAR: 31557600000, // 365.25 days
    ONEAVGMONTH: 2629800000, // 1/12 of ONEAVGYEAR
    ONEDAY: 86400000,
    ONEHOUR: 3600000,
    ONEMIN: 60000,
    ONESEC: 1000,

    /*
     * For fast conversion btwn world calendars and epoch ms, the Julian Day Number
     * of the unix epoch. From calendars.instance().newDate(1970, 1, 1).toJD()
     */
    EPOCHJD: 2440587.5
};

},{}],594:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// N.B. HTML entities are listed without the leading '&' and trailing ';'

module.exports = {

    entityToUnicode: {
        'mu': 'μ',
        'amp': '&',
        'lt': '<',
        'gt': '>',
        'nbsp': ' ',
        'times': '×',
        'plusmn': '±',
        'deg': '°'
    },

    unicodeToEntity: {
        '&': 'amp',
        '<': 'lt',
        '>': 'gt',
        '"': 'quot',
        '\'': '#x27',
        '\/': '#x2F'
    }

};

},{}],595:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


exports.xmlns = 'http://www.w3.org/2000/xmlns/';
exports.svg = 'http://www.w3.org/2000/svg';
exports.xlink = 'http://www.w3.org/1999/xlink';

// the 'old' d3 quirk got fix in v3.5.7
// https://github.com/mbostock/d3/commit/a6f66e9dd37f764403fc7c1f26be09ab4af24fed
exports.svgAttrs = {
    xmlns: exports.svg,
    'xmlns:xlink': exports.xlink
};

},{}],596:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/*
 * Export the plotly.js API methods.
 */

var Plotly = require('./plotly');

// package version injected by `npm run preprocess`
exports.version = '1.21.3';

// inject promise polyfill
require('es6-promise').polyfill();

// inject plot css
require('../build/plotcss');

// inject default MathJax config
require('./fonts/mathjax_config');

// plot api
exports.plot = Plotly.plot;
exports.newPlot = Plotly.newPlot;
exports.restyle = Plotly.restyle;
exports.relayout = Plotly.relayout;
exports.redraw = Plotly.redraw;
exports.update = Plotly.update;
exports.extendTraces = Plotly.extendTraces;
exports.prependTraces = Plotly.prependTraces;
exports.addTraces = Plotly.addTraces;
exports.deleteTraces = Plotly.deleteTraces;
exports.moveTraces = Plotly.moveTraces;
exports.purge = Plotly.purge;
exports.setPlotConfig = require('./plot_api/set_plot_config');
exports.register = require('./plot_api/register');
exports.toImage = require('./plot_api/to_image');
exports.downloadImage = require('./snapshot/download');
exports.validate = require('./plot_api/validate');
exports.addFrames = Plotly.addFrames;
exports.deleteFrames = Plotly.deleteFrames;
exports.animate = Plotly.animate;

// scatter is the only trace included by default
exports.register(require('./traces/scatter'));

// register all registrable components modules
exports.register([
    require('./components/legend'),
    require('./components/annotations'),
    require('./components/shapes'),
    require('./components/images'),
    require('./components/updatemenus'),
    require('./components/sliders'),
    require('./components/rangeslider'),
    require('./components/rangeselector')
]);

// plot icons
exports.Icons = require('../build/ploticon');

// unofficial 'beta' plot methods, use at your own risk
exports.Plots = Plotly.Plots;
exports.Fx = Plotly.Fx;
exports.Snapshot = require('./snapshot');
exports.PlotSchema = require('./plot_api/plot_schema');
exports.Queue = require('./lib/queue');

// export d3 used in the bundle
exports.d3 = require('d3');

},{"../build/plotcss":471,"../build/ploticon":472,"./components/annotations":506,"./components/images":545,"./components/legend":553,"./components/rangeselector":565,"./components/rangeslider":570,"./components/shapes":577,"./components/sliders":583,"./components/updatemenus":589,"./fonts/mathjax_config":597,"./lib/queue":619,"./plot_api/plot_schema":631,"./plot_api/register":632,"./plot_api/set_plot_config":633,"./plot_api/to_image":635,"./plot_api/validate":636,"./plotly":637,"./snapshot":722,"./snapshot/download":719,"./traces/scatter":844,"d3":86,"es6-promise":498}],597:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/* global MathJax:false */

/**
 * Check and configure MathJax
 */
if(typeof MathJax !== 'undefined') {
    exports.MathJax = true;

    MathJax.Hub.Config({
        messageStyle: 'none',
        skipStartupTypeset: true,
        displayAlign: 'left',
        tex2jax: {
            inlineMath: [['$', '$'], ['\\(', '\\)']]
        }
    });

    MathJax.Hub.Configured();
} else {
    exports.MathJax = false;
}

},{}],598:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// similar to Lib.mergeArray, but using inside a loop
module.exports = function arrayToCalcItem(traceAttr, calcItem, calcAttr, i) {
    if(Array.isArray(traceAttr)) calcItem[calcAttr] = traceAttr[i];
};

},{}],599:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var BADNUM = require('../constants/numerical').BADNUM;

// precompile for speed
var JUNK = /^['"%,$#\s']+|[, ]|['"%,$#\s']+$/g;

/**
 * cleanNumber: remove common leading and trailing cruft
 * Always returns either a number or BADNUM.
 */
module.exports = function cleanNumber(v) {
    if(typeof v === 'string') {
        v = v.replace(JUNK, '');
    }

    if(isNumeric(v)) return Number(v);

    return BADNUM;
};

},{"../constants/numerical":593,"fast-isnumeric":97}],600:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var tinycolor = require('tinycolor2');

var getColorscale = require('../components/colorscale/get_scale');
var colorscaleNames = Object.keys(require('../components/colorscale/scales'));
var nestedProperty = require('./nested_property');

var ID_REGEX = /^([2-9]|[1-9][0-9]+)$/;

exports.valObjects = {
    data_array: {
        // You can use *dflt=[] to force said array to exist though.
        description: [
            'An {array} of data.',
            'The value MUST be an {array}, or we ignore it.'
        ].join(' '),
        requiredOpts: [],
        otherOpts: ['dflt'],
        coerceFunction: function(v, propOut, dflt) {
            if(Array.isArray(v)) propOut.set(v);
            else if(dflt !== undefined) propOut.set(dflt);
        }
    },
    enumerated: {
        description: [
            'Enumerated value type. The available values are listed',
            'in `values`.'
        ].join(' '),
        requiredOpts: ['values'],
        otherOpts: ['dflt', 'coerceNumber', 'arrayOk'],
        coerceFunction: function(v, propOut, dflt, opts) {
            if(opts.coerceNumber) v = +v;
            if(opts.values.indexOf(v) === -1) propOut.set(dflt);
            else propOut.set(v);
        }
    },
    'boolean': {
        description: 'A boolean (true/false) value.',
        requiredOpts: [],
        otherOpts: ['dflt'],
        coerceFunction: function(v, propOut, dflt) {
            if(v === true || v === false) propOut.set(v);
            else propOut.set(dflt);
        }
    },
    number: {
        description: [
            'A number or a numeric value',
            '(e.g. a number inside a string).',
            'When applicable, values greater (less) than `max` (`min`)',
            'are coerced to the `dflt`.'
        ].join(' '),
        requiredOpts: [],
        otherOpts: ['dflt', 'min', 'max', 'arrayOk'],
        coerceFunction: function(v, propOut, dflt, opts) {
            if(!isNumeric(v) ||
                    (opts.min !== undefined && v < opts.min) ||
                    (opts.max !== undefined && v > opts.max)) {
                propOut.set(dflt);
            }
            else propOut.set(+v);
        }
    },
    integer: {
        description: [
            'An integer or an integer inside a string.',
            'When applicable, values greater (less) than `max` (`min`)',
            'are coerced to the `dflt`.'
        ].join(' '),
        requiredOpts: [],
        otherOpts: ['dflt', 'min', 'max'],
        coerceFunction: function(v, propOut, dflt, opts) {
            if(v % 1 || !isNumeric(v) ||
                    (opts.min !== undefined && v < opts.min) ||
                    (opts.max !== undefined && v > opts.max)) {
                propOut.set(dflt);
            }
            else propOut.set(+v);
        }
    },
    string: {
        description: [
            'A string value.',
            'Numbers are converted to strings except for attributes with',
            '`strict` set to true.'
        ].join(' '),
        requiredOpts: [],
        // TODO 'values shouldn't be in there (edge case: 'dash' in Scatter)
        otherOpts: ['dflt', 'noBlank', 'strict', 'arrayOk', 'values'],
        coerceFunction: function(v, propOut, dflt, opts) {
            if(typeof v !== 'string') {
                var okToCoerce = (typeof v === 'number');

                if(opts.strict === true || !okToCoerce) propOut.set(dflt);
                else propOut.set(String(v));
            }
            else if(opts.noBlank && !v) propOut.set(dflt);
            else propOut.set(v);
        }
    },
    color: {
        description: [
            'A string describing color.',
            'Supported formats:',
            '- hex (e.g. \'#d3d3d3\')',
            '- rgb (e.g. \'rgb(255, 0, 0)\')',
            '- rgba (e.g. \'rgb(255, 0, 0, 0.5)\')',
            '- hsl (e.g. \'hsl(0, 100%, 50%)\')',
            '- hsv (e.g. \'hsv(0, 100%, 100%)\')',
            '- named colors (full list: http://www.w3.org/TR/css3-color/#svg-color)'
        ].join(' '),
        requiredOpts: [],
        otherOpts: ['dflt', 'arrayOk'],
        coerceFunction: function(v, propOut, dflt) {
            if(tinycolor(v).isValid()) propOut.set(v);
            else propOut.set(dflt);
        }
    },
    colorscale: {
        description: [
            'A Plotly colorscale either picked by a name:',
            '(any of', colorscaleNames.join(', '), ')',
            'customized as an {array} of 2-element {arrays} where',
            'the first element is the normalized color level value',
            '(starting at *0* and ending at *1*),',
            'and the second item is a valid color string.'
        ].join(' '),
        requiredOpts: [],
        otherOpts: ['dflt'],
        coerceFunction: function(v, propOut, dflt) {
            propOut.set(getColorscale(v, dflt));
        }
    },
    angle: {
        description: [
            'A number (in degree) between -180 and 180.'
        ].join(' '),
        requiredOpts: [],
        otherOpts: ['dflt'],
        coerceFunction: function(v, propOut, dflt) {
            if(v === 'auto') propOut.set('auto');
            else if(!isNumeric(v)) propOut.set(dflt);
            else {
                if(Math.abs(v) > 180) v -= Math.round(v / 360) * 360;
                propOut.set(+v);
            }
        }
    },
    subplotid: {
        description: [
            'An id string of a subplot type (given by dflt), optionally',
            'followed by an integer >1. e.g. if dflt=\'geo\', we can have',
            '\'geo\', \'geo2\', \'geo3\', ...'
        ].join(' '),
        requiredOpts: ['dflt'],
        otherOpts: [],
        coerceFunction: function(v, propOut, dflt) {
            var dlen = dflt.length;
            if(typeof v === 'string' && v.substr(0, dlen) === dflt &&
                    ID_REGEX.test(v.substr(dlen))) {
                propOut.set(v);
                return;
            }
            propOut.set(dflt);
        },
        validateFunction: function(v, opts) {
            var dflt = opts.dflt,
                dlen = dflt.length;

            if(v === dflt) return true;
            if(typeof v !== 'string') return false;
            if(v.substr(0, dlen) === dflt && ID_REGEX.test(v.substr(dlen))) {
                return true;
            }

            return false;
        }
    },
    flaglist: {
        description: [
            'A string representing a combination of flags',
            '(order does not matter here).',
            'Combine any of the available `flags` with *+*.',
            '(e.g. (\'lines+markers\')).',
            'Values in `extras` cannot be combined.'
        ].join(' '),
        requiredOpts: ['flags'],
        otherOpts: ['dflt', 'extras'],
        coerceFunction: function(v, propOut, dflt, opts) {
            if(typeof v !== 'string') {
                propOut.set(dflt);
                return;
            }
            if((opts.extras || []).indexOf(v) !== -1) {
                propOut.set(v);
                return;
            }
            var vParts = v.split('+'),
                i = 0;
            while(i < vParts.length) {
                var vi = vParts[i];
                if(opts.flags.indexOf(vi) === -1 || vParts.indexOf(vi) < i) {
                    vParts.splice(i, 1);
                }
                else i++;
            }
            if(!vParts.length) propOut.set(dflt);
            else propOut.set(vParts.join('+'));
        }
    },
    any: {
        description: 'Any type.',
        requiredOpts: [],
        otherOpts: ['dflt', 'values', 'arrayOk'],
        coerceFunction: function(v, propOut, dflt) {
            if(v === undefined) propOut.set(dflt);
            else propOut.set(v);
        }
    },
    info_array: {
        description: [
            'An {array} of plot information.'
        ].join(' '),
        requiredOpts: ['items'],
        otherOpts: ['dflt', 'freeLength'],
        coerceFunction: function(v, propOut, dflt, opts) {
            if(!Array.isArray(v)) {
                propOut.set(dflt);
                return;
            }

            var items = opts.items,
                vOut = [];
            dflt = Array.isArray(dflt) ? dflt : [];

            for(var i = 0; i < items.length; i++) {
                exports.coerce(v, vOut, items, '[' + i + ']', dflt[i]);
            }

            propOut.set(vOut);
        },
        validateFunction: function(v, opts) {
            if(!Array.isArray(v)) return false;

            var items = opts.items;

            // when free length is off, input and declared lengths must match
            if(!opts.freeLength && v.length !== items.length) return false;

            // valid when all input items are valid
            for(var i = 0; i < v.length; i++) {
                var isItemValid = exports.validate(v[i], opts.items[i]);

                if(!isItemValid) return false;
            }

            return true;
        }
    }
};

/**
 * Ensures that container[attribute] has a valid value.
 *
 * attributes[attribute] is an object with possible keys:
 * - valType: data_array, enumerated, boolean, ... as in valObjects
 * - values: (enumerated only) array of allowed vals
 * - min, max: (number, integer only) inclusive bounds on allowed vals
 *      either or both may be omitted
 * - dflt: if attribute is invalid or missing, use this default
 *      if dflt is provided as an argument to lib.coerce it takes precedence
 *      as a convenience, returns the value it finally set
 */
exports.coerce = function(containerIn, containerOut, attributes, attribute, dflt) {
    var opts = nestedProperty(attributes, attribute).get(),
        propIn = nestedProperty(containerIn, attribute),
        propOut = nestedProperty(containerOut, attribute),
        v = propIn.get();

    if(dflt === undefined) dflt = opts.dflt;

    /**
     * arrayOk: value MAY be an array, then we do no value checking
     * at this point, because it can be more complicated than the
     * individual form (eg. some array vals can be numbers, even if the
     * single values must be color strings)
     */
    if(opts.arrayOk && Array.isArray(v)) {
        propOut.set(v);
        return v;
    }

    exports.valObjects[opts.valType].coerceFunction(v, propOut, dflt, opts);

    return propOut.get();
};

/**
 * Variation on coerce
 *
 * Uses coerce to get attribute value if user input is valid,
 * returns attribute default if user input it not valid or
 * returns false if there is no user input.
 */
exports.coerce2 = function(containerIn, containerOut, attributes, attribute, dflt) {
    var propIn = nestedProperty(containerIn, attribute),
        propOut = exports.coerce(containerIn, containerOut, attributes, attribute, dflt),
        valIn = propIn.get();

    return (valIn !== undefined && valIn !== null) ? propOut : false;
};

/*
 * Shortcut to coerce the three font attributes
 *
 * 'coerce' is a lib.coerce wrapper with implied first three arguments
 */
exports.coerceFont = function(coerce, attr, dfltObj) {
    var out = {};

    dfltObj = dfltObj || {};

    out.family = coerce(attr + '.family', dfltObj.family);
    out.size = coerce(attr + '.size', dfltObj.size);
    out.color = coerce(attr + '.color', dfltObj.color);

    return out;
};

exports.validate = function(value, opts) {
    var valObject = exports.valObjects[opts.valType];

    if(opts.arrayOk && Array.isArray(value)) return true;

    if(valObject.validateFunction) {
        return valObject.validateFunction(value, opts);
    }

    var failed = {},
        out = failed,
        propMock = { set: function(v) { out = v; } };

    // 'failed' just something mutable that won't be === anything else

    valObject.coerceFunction(value, propMock, failed, opts);
    return out !== failed;
};

},{"../components/colorscale/get_scale":522,"../components/colorscale/scales":528,"./nested_property":616,"fast-isnumeric":97,"tinycolor2":985}],601:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var logError = require('./loggers').error;
var mod = require('./mod');

var constants = require('../constants/numerical');
var BADNUM = constants.BADNUM;
var ONEDAY = constants.ONEDAY;
var ONEHOUR = constants.ONEHOUR;
var ONEMIN = constants.ONEMIN;
var ONESEC = constants.ONESEC;
var EPOCHJD = constants.EPOCHJD;

var Registry = require('../registry');

var utcFormat = d3.time.format.utc;

var DATETIME_REGEXP = /^\s*(-?\d\d\d\d|\d\d)(-(\d?\d)(-(\d?\d)([ Tt]([01]?\d|2[0-3])(:([0-5]\d)(:([0-5]\d(\.\d+)?))?(Z|z|[+\-]\d\d:?\d\d)?)?)?)?)?\s*$/m;
// special regex for chinese calendars to support yyyy-mmi-dd etc for intercalary months
var DATETIME_REGEXP_CN = /^\s*(-?\d\d\d\d|\d\d)(-(\d?\di?)(-(\d?\d)([ Tt]([01]?\d|2[0-3])(:([0-5]\d)(:([0-5]\d(\.\d+)?))?(Z|z|[+\-]\d\d:?\d\d)?)?)?)?)?\s*$/m;

// for 2-digit years, the first year we map them onto
var YFIRST = new Date().getFullYear() - 70;

function isWorldCalendar(calendar) {
    return (
        calendar &&
        Registry.componentsRegistry.calendars &&
        typeof calendar === 'string' && calendar !== 'gregorian'
    );
}

/*
 * dateTick0: get the canonical tick for this calendar
 *
 * bool sunday is for week ticks, shift it to a Sunday.
 */
exports.dateTick0 = function(calendar, sunday) {
    if(isWorldCalendar(calendar)) {
        return sunday ?
            Registry.getComponentMethod('calendars', 'CANONICAL_SUNDAY')[calendar] :
            Registry.getComponentMethod('calendars', 'CANONICAL_TICK')[calendar];
    }
    else {
        return sunday ? '2000-01-02' : '2000-01-01';
    }
};

/*
 * dfltRange: for each calendar, give a valid default range
 */
exports.dfltRange = function(calendar) {
    if(isWorldCalendar(calendar)) {
        return Registry.getComponentMethod('calendars', 'DFLTRANGE')[calendar];
    }
    else {
        return ['2000-01-01', '2001-01-01'];
    }
};

// is an object a javascript date?
exports.isJSDate = function(v) {
    return typeof v === 'object' && v !== null && typeof v.getTime === 'function';
};

// The absolute limits of our date-time system
// This is a little weird: we use MIN_MS and MAX_MS in dateTime2ms
// but we use dateTime2ms to calculate them (after defining it!)
var MIN_MS, MAX_MS;

/**
 * dateTime2ms - turn a date object or string s into milliseconds
 * (relative to 1970-01-01, per javascript standard)
 * optional calendar (string) to use a non-gregorian calendar
 *
 * Returns BADNUM if it doesn't find a date
 *
 * strings should have the form:
 *
 *    -?YYYY-mm-dd<sep>HH:MM:SS.sss<tzInfo>?
 *
 * <sep>: space (our normal standard) or T or t (ISO-8601)
 * <tzInfo>: Z, z, or [+\-]HH:?MM and we THROW IT AWAY
 * this format comes from https://tools.ietf.org/html/rfc3339#section-5.6
 * but we allow it even with a space as the separator
 *
 * May truncate after any full field, and sss can be any length
 * even >3 digits, though javascript dates truncate to milliseconds,
 * we keep as much as javascript numeric precision can hold, but we only
 * report back up to 100 microsecond precision, because most dates support
 * this precision (close to 1970 support more, very far away support less)
 *
 * Expanded to support negative years to -9999 but you must always
 * give 4 digits, except for 2-digit positive years which we assume are
 * near the present time.
 * Note that we follow ISO 8601:2004: there *is* a year 0, which
 * is 1BC/BCE, and -1===2BC etc.
 *
 * World calendars: not all of these *have* agreed extensions to this full range,
 * if you have another calendar system but want a date range outside its validity,
 * you can use a gregorian date string prefixed with 'G' or 'g'.
 *
 * Where to cut off 2-digit years between 1900s and 2000s?
 * from http://support.microsoft.com/kb/244664:
 *   1930-2029 (the most retro of all...)
 * but in my mac chrome from eg. d=new Date(Date.parse('8/19/50')):
 *   1950-2049
 * by Java, from http://stackoverflow.com/questions/2024273/:
 *   now-80 - now+19
 * or FileMaker Pro, from
 *      http://www.filemaker.com/12help/html/add_view_data.4.21.html:
 *   now-70 - now+29
 * but python strptime etc, via
 *      http://docs.python.org/py3k/library/time.html:
 *   1969-2068 (super forward-looking, but static, not sliding!)
 *
 * lets go with now-70 to now+29, and if anyone runs into this problem
 * they can learn the hard way not to use 2-digit years, as no choice we
 * make now will cover all possibilities. mostly this will all be taken
 * care of in initial parsing, should only be an issue for hand-entered data
 * currently (2016) this range is:
 *   1946-2045
 */
exports.dateTime2ms = function(s, calendar) {
    // first check if s is a date object
    if(exports.isJSDate(s)) {
        // Convert to the UTC milliseconds that give the same
        // hours as this date has in the local timezone
        s = Number(s) - s.getTimezoneOffset() * ONEMIN;
        if(s >= MIN_MS && s <= MAX_MS) return s;
        return BADNUM;
    }
    // otherwise only accept strings and numbers
    if(typeof s !== 'string' && typeof s !== 'number') return BADNUM;

    s = String(s);

    var isWorld = isWorldCalendar(calendar);

    // to handle out-of-range dates in international calendars, accept
    // 'G' as a prefix to force the built-in gregorian calendar.
    var s0 = s.charAt(0);
    if(isWorld && (s0 === 'G' || s0 === 'g')) {
        s = s.substr(1);
        calendar = '';
    }

    var isChinese = isWorld && calendar.substr(0, 7) === 'chinese';

    var match = s.match(isChinese ? DATETIME_REGEXP_CN : DATETIME_REGEXP);
    if(!match) return BADNUM;
    var y = match[1],
        m = match[3] || '1',
        d = Number(match[5] || 1),
        H = Number(match[7] || 0),
        M = Number(match[9] || 0),
        S = Number(match[11] || 0);

    if(isWorld) {
        // disallow 2-digit years for world calendars
        if(y.length === 2) return BADNUM;
        y = Number(y);

        var cDate;
        try {
            var calInstance = Registry.getComponentMethod('calendars', 'getCal')(calendar);
            if(isChinese) {
                var isIntercalary = m.charAt(m.length - 1) === 'i';
                m = parseInt(m, 10);
                cDate = calInstance.newDate(y, calInstance.toMonthIndex(y, m, isIntercalary), d);
            }
            else {
                cDate = calInstance.newDate(y, Number(m), d);
            }
        }
        catch(e) { return BADNUM; } // Invalid ... date

        if(!cDate) return BADNUM;

        return ((cDate.toJD() - EPOCHJD) * ONEDAY) +
            (H * ONEHOUR) + (M * ONEMIN) + (S * ONESEC);
    }

    if(y.length === 2) {
        y = (Number(y) + 2000 - YFIRST) % 100 + YFIRST;
    }
    else y = Number(y);

    // new Date uses months from 0; subtract 1 here just so we
    // don't have to do it again during the validity test below
    m -= 1;

    // javascript takes new Date(0..99,m,d) to mean 1900-1999, so
    // to support years 0-99 we need to use setFullYear explicitly
    // Note that 2000 is a leap year.
    var date = new Date(Date.UTC(2000, m, d, H, M));
    date.setUTCFullYear(y);

    if(date.getUTCMonth() !== m) return BADNUM;
    if(date.getUTCDate() !== d) return BADNUM;

    return date.getTime() + S * ONESEC;
};

MIN_MS = exports.MIN_MS = exports.dateTime2ms('-9999');
MAX_MS = exports.MAX_MS = exports.dateTime2ms('9999-12-31 23:59:59.9999');

// is string s a date? (see above)
exports.isDateTime = function(s, calendar) {
    return (exports.dateTime2ms(s, calendar) !== BADNUM);
};

// pad a number with zeroes, to given # of digits before the decimal point
function lpad(val, digits) {
    return String(val + Math.pow(10, digits)).substr(1);
}

/**
 * Turn ms into string of the form YYYY-mm-dd HH:MM:SS.ssss
 * Crop any trailing zeros in time, except never stop right after hours
 * (we could choose to crop '-01' from date too but for now we always
 * show the whole date)
 * Optional range r is the data range that applies, also in ms.
 * If rng is big, the later parts of time will be omitted
 */
var NINETYDAYS = 90 * ONEDAY;
var THREEHOURS = 3 * ONEHOUR;
var FIVEMIN = 5 * ONEMIN;
exports.ms2DateTime = function(ms, r, calendar) {
    if(typeof ms !== 'number' || !(ms >= MIN_MS && ms <= MAX_MS)) return BADNUM;

    if(!r) r = 0;

    var msecTenths = Math.floor(mod(ms + 0.05, 1) * 10),
        msRounded = Math.round(ms - msecTenths / 10),
        dateStr, h, m, s, msec10, d;

    if(isWorldCalendar(calendar)) {
        var dateJD = Math.floor(msRounded / ONEDAY) + EPOCHJD,
            timeMs = Math.floor(mod(ms, ONEDAY));
        try {
            dateStr = Registry.getComponentMethod('calendars', 'getCal')(calendar)
                .fromJD(dateJD).formatDate('yyyy-mm-dd');
        }
        catch(e) {
            // invalid date in this calendar - fall back to Gyyyy-mm-dd
            dateStr = utcFormat('G%Y-%m-%d')(new Date(msRounded));
        }

        // yyyy does NOT guarantee 4-digit years. YYYY mostly does, but does
        // other things for a few calendars, so we can't trust it. Just pad
        // it manually (after the '-' if there is one)
        if(dateStr.charAt(0) === '-') {
            while(dateStr.length < 11) dateStr = '-0' + dateStr.substr(1);
        }
        else {
            while(dateStr.length < 10) dateStr = '0' + dateStr;
        }

        // TODO: if this is faster, we could use this block for extracting
        // the time components of regular gregorian too
        h = (r < NINETYDAYS) ? Math.floor(timeMs / ONEHOUR) : 0;
        m = (r < NINETYDAYS) ? Math.floor((timeMs % ONEHOUR) / ONEMIN) : 0;
        s = (r < THREEHOURS) ? Math.floor((timeMs % ONEMIN) / ONESEC) : 0;
        msec10 = (r < FIVEMIN) ? (timeMs % ONESEC) * 10 + msecTenths : 0;
    }
    else {
        d = new Date(msRounded);

        dateStr = utcFormat('%Y-%m-%d')(d);

        // <90 days: add hours and minutes - never *only* add hours
        h = (r < NINETYDAYS) ? d.getUTCHours() : 0;
        m = (r < NINETYDAYS) ? d.getUTCMinutes() : 0;
        // <3 hours: add seconds
        s = (r < THREEHOURS) ? d.getUTCSeconds() : 0;
        // <5 minutes: add ms (plus one extra digit, this is msec*10)
        msec10 = (r < FIVEMIN) ? d.getUTCMilliseconds() * 10 + msecTenths : 0;
    }

    return includeTime(dateStr, h, m, s, msec10);
};

// For converting old-style milliseconds to date strings,
// we use the local timezone rather than UTC like we use
// everywhere else, both for backward compatibility and
// because that's how people mostly use javasript date objects.
// Clip one extra day off our date range though so we can't get
// thrown beyond the range by the timezone shift.
exports.ms2DateTimeLocal = function(ms) {
    if(!(ms >= MIN_MS + ONEDAY && ms <= MAX_MS - ONEDAY)) return BADNUM;

    var msecTenths = Math.floor(mod(ms + 0.05, 1) * 10),
        d = new Date(Math.round(ms - msecTenths / 10)),
        dateStr = d3.time.format('%Y-%m-%d')(d),
        h = d.getHours(),
        m = d.getMinutes(),
        s = d.getSeconds(),
        msec10 = d.getUTCMilliseconds() * 10 + msecTenths;

    return includeTime(dateStr, h, m, s, msec10);
};

function includeTime(dateStr, h, m, s, msec10) {
    // include each part that has nonzero data in or after it
    if(h || m || s || msec10) {
        dateStr += ' ' + lpad(h, 2) + ':' + lpad(m, 2);
        if(s || msec10) {
            dateStr += ':' + lpad(s, 2);
            if(msec10) {
                var digits = 4;
                while(msec10 % 10 === 0) {
                    digits -= 1;
                    msec10 /= 10;
                }
                dateStr += '.' + lpad(msec10, digits);
            }
        }
    }
    return dateStr;
}

// normalize date format to date string, in case it starts as
// a Date object or milliseconds
// optional dflt is the return value if cleaning fails
exports.cleanDate = function(v, dflt, calendar) {
    if(exports.isJSDate(v) || typeof v === 'number') {
        // do not allow milliseconds (old) or jsdate objects (inherently
        // described as gregorian dates) with world calendars
        if(isWorldCalendar(calendar)) {
            logError('JS Dates and milliseconds are incompatible with world calendars', v);
            return dflt;
        }

        // NOTE: if someone puts in a year as a number rather than a string,
        // this will mistakenly convert it thinking it's milliseconds from 1970
        // that is: '2012' -> Jan. 1, 2012, but 2012 -> 2012 epoch milliseconds
        v = exports.ms2DateTimeLocal(+v);
        if(!v && dflt !== undefined) return dflt;
    }
    else if(!exports.isDateTime(v, calendar)) {
        logError('unrecognized date', v);
        return dflt;
    }
    return v;
};

/*
 *  Date formatting for ticks and hovertext
 */

/*
 * modDateFormat: Support world calendars, and add one item to
 * d3's vocabulary:
 * %{n}f where n is the max number of digits of fractional seconds
 */
var fracMatch = /%\d?f/g;
function modDateFormat(fmt, x, calendar) {

    fmt = fmt.replace(fracMatch, function(match) {
        var digits = Math.min(+(match.charAt(1)) || 6, 6),
            fracSecs = ((x / 1000 % 1) + 2)
                .toFixed(digits)
                .substr(2).replace(/0+$/, '') || '0';
        return fracSecs;
    });

    var d = new Date(Math.floor(x + 0.05));

    if(isWorldCalendar(calendar)) {
        try {
            fmt = Registry.getComponentMethod('calendars', 'worldCalFmt')(fmt, x, calendar);
        }
        catch(e) {
            return 'Invalid';
        }
    }
    return utcFormat(fmt)(d);
}

/*
 * formatTime: create a time string from:
 *   x: milliseconds
 *   tr: tickround ('M', 'S', or # digits)
 * only supports UTC times (where every day is 24 hours and 0 is at midnight)
 */
var MAXSECONDS = [59, 59.9, 59.99, 59.999, 59.9999];
function formatTime(x, tr) {
    var timePart = mod(x + 0.05, ONEDAY);

    var timeStr = lpad(Math.floor(timePart / ONEHOUR), 2) + ':' +
        lpad(mod(Math.floor(timePart / ONEMIN), 60), 2);

    if(tr !== 'M') {
        if(!isNumeric(tr)) tr = 0; // should only be 'S'

        /*
         * this is a weird one - and shouldn't come up unless people
         * monkey with tick0 in weird ways, but we need to do something!
         * IN PARTICULAR we had better not display garbage (see below)
         * for numbers we always round to the nearest increment of the
         * precision we're showing, and this seems like the right way to
         * handle seconds and milliseconds, as they have a decimal point
         * and people will interpret that to mean rounding like numbers.
         * but for larger increments we floor the value: it's always
         * 2013 until the ball drops on the new year. We could argue about
         * which field it is where we start rounding (should 12:08:59
         * round to 12:09 if we're stopping at minutes?) but for now I'll
         * say we round seconds but floor everything else. BUT that means
         * we need to never round up to 60 seconds, ie 23:59:60
         */
        var sec = Math.min(mod(x / ONESEC, 60), MAXSECONDS[tr]);

        var secStr = (100 + sec).toFixed(tr).substr(1);
        if(tr > 0) {
            secStr = secStr.replace(/0+$/, '').replace(/[\.]$/, '');
        }

        timeStr += ':' + secStr;
    }
    return timeStr;
}

var yearFormat = utcFormat('%Y'),
    monthFormat = utcFormat('%b %Y'),
    dayFormat = utcFormat('%b %-d'),
    yearMonthDayFormat = utcFormat('%b %-d, %Y');

function yearFormatWorld(cDate) { return cDate.formatDate('yyyy'); }
function monthFormatWorld(cDate) { return cDate.formatDate('M yyyy'); }
function dayFormatWorld(cDate) { return cDate.formatDate('M d'); }
function yearMonthDayFormatWorld(cDate) { return cDate.formatDate('M d, yyyy'); }

/*
 * formatDate: turn a date into tick or hover label text.
 *
 *   x: milliseconds, the value to convert
 *   fmt: optional, an explicit format string (d3 format, even for world calendars)
 *   tr: tickround ('y', 'm', 'd', 'M', 'S', or # digits)
 *      used if no explicit fmt is provided
 *   calendar: optional string, the world calendar system to use
 *
 * returns the date/time as a string, potentially with the leading portion
 * on a separate line (after '\n')
 * Note that this means if you provide an explicit format which includes '\n'
 * the axis may choose to strip things after it when they don't change from
 * one tick to the next (as it does with automatic formatting)
 */
exports.formatDate = function(x, fmt, tr, calendar) {
    var headStr,
        dateStr;

    calendar = isWorldCalendar(calendar) && calendar;

    if(fmt) return modDateFormat(fmt, x, calendar);

    if(calendar) {
        try {
            var dateJD = Math.floor((x + 0.05) / ONEDAY) + EPOCHJD,
                cDate = Registry.getComponentMethod('calendars', 'getCal')(calendar)
                    .fromJD(dateJD);

            if(tr === 'y') dateStr = yearFormatWorld(cDate);
            else if(tr === 'm') dateStr = monthFormatWorld(cDate);
            else if(tr === 'd') {
                headStr = yearFormatWorld(cDate);
                dateStr = dayFormatWorld(cDate);
            }
            else {
                headStr = yearMonthDayFormatWorld(cDate);
                dateStr = formatTime(x, tr);
            }
        }
        catch(e) { return 'Invalid'; }
    }
    else {
        var d = new Date(Math.floor(x + 0.05));

        if(tr === 'y') dateStr = yearFormat(d);
        else if(tr === 'm') dateStr = monthFormat(d);
        else if(tr === 'd') {
            headStr = yearFormat(d);
            dateStr = dayFormat(d);
        }
        else {
            headStr = yearMonthDayFormat(d);
            dateStr = formatTime(x, tr);
        }
    }

    return dateStr + (headStr ? '\n' + headStr : '');
};

/*
 * incrementMonth: make a new milliseconds value from the given one,
 * having changed the month
 *
 * special case for world calendars: multiples of 12 are treated as years,
 * even for calendar systems that don't have (always or ever) 12 months/year
 * TODO: perhaps we need a different code for year increments to support this?
 *
 * ms (number): the initial millisecond value
 * dMonth (int): the (signed) number of months to shift
 * calendar (string): the calendar system to use
 *
 * changing month does not (and CANNOT) always preserve day, since
 * months have different lengths. The worst example of this is:
 *   d = new Date(1970,0,31); d.setMonth(1) -> Feb 31 turns into Mar 3
 *
 * But we want to be able to iterate over the last day of each month,
 * regardless of what its number is.
 * So shift 3 days forward, THEN set the new month, then unshift:
 *   1/31 -> 2/28 (or 29) -> 3/31 -> 4/30 -> ...
 *
 * Note that odd behavior still exists if you start from the 26th-28th:
 *   1/28 -> 2/28 -> 3/31
 * but at least you can't shift any dates into the wrong month,
 * and ticks on these days incrementing by month would be very unusual
 */
var THREEDAYS = 3 * ONEDAY;
exports.incrementMonth = function(ms, dMonth, calendar) {
    calendar = isWorldCalendar(calendar) && calendar;

    // pull time out and operate on pure dates, then add time back at the end
    // this gives maximum precision - not that we *normally* care if we're
    // incrementing by month, but better to be safe!
    var timeMs = mod(ms, ONEDAY);
    ms = Math.round(ms - timeMs);

    if(calendar) {
        try {
            var dateJD = Math.round(ms / ONEDAY) + EPOCHJD,
                calInstance = Registry.getComponentMethod('calendars', 'getCal')(calendar),
                cDate = calInstance.fromJD(dateJD);

            if(dMonth % 12) calInstance.add(cDate, dMonth, 'm');
            else calInstance.add(cDate, dMonth / 12, 'y');

            return (cDate.toJD() - EPOCHJD) * ONEDAY + timeMs;
        }
        catch(e) {
            logError('invalid ms ' + ms + ' in calendar ' + calendar);
            // then keep going in gregorian even though the result will be 'Invalid'
        }
    }

    var y = new Date(ms + THREEDAYS);
    return y.setUTCMonth(y.getUTCMonth() + dMonth) + timeMs - THREEDAYS;
};

/*
 * findExactDates: what fraction of data is exact days, months, or years?
 *
 * data: array of millisecond values
 * calendar (string) the calendar to test against
 */
exports.findExactDates = function(data, calendar) {
    var exactYears = 0,
        exactMonths = 0,
        exactDays = 0,
        blankCount = 0,
        d,
        di;

    var calInstance = (
        isWorldCalendar(calendar) &&
        Registry.getComponentMethod('calendars', 'getCal')(calendar)
    );

    for(var i = 0; i < data.length; i++) {
        di = data[i];

        // not date data at all
        if(!isNumeric(di)) {
            blankCount ++;
            continue;
        }

        // not an exact date
        if(di % ONEDAY) continue;

        if(calInstance) {
            try {
                d = calInstance.fromJD(di / ONEDAY + EPOCHJD);
                if(d.day() === 1) {
                    if(d.month() === 1) exactYears++;
                    else exactMonths++;
                }
                else exactDays++;
            }
            catch(e) {
                // invalid date in this calendar - ignore it here.
            }
        }
        else {
            d = new Date(di);
            if(d.getUTCDate() === 1) {
                if(d.getUTCMonth() === 0) exactYears++;
                else exactMonths++;
            }
            else exactDays++;
        }
    }
    exactMonths += exactYears;
    exactDays += exactMonths;

    var dataCount = data.length - blankCount;

    return {
        exactYears: exactYears / dataCount,
        exactMonths: exactMonths / dataCount,
        exactDays: exactDays / dataCount
    };
};

},{"../constants/numerical":593,"../registry":717,"./loggers":613,"./mod":615,"d3":86,"fast-isnumeric":97}],602:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/* global jQuery:false */

var EventEmitter = require('events').EventEmitter;

var Events = {

    init: function(plotObj) {

        /*
         * If we have already instantiated an emitter for this plot
         * return early.
         */
        if(plotObj._ev instanceof EventEmitter) return plotObj;

        var ev = new EventEmitter();
        var internalEv = new EventEmitter();

        /*
         * Assign to plot._ev while we still live in a land
         * where plot is a DOM element with stuff attached to it.
         * In the future we can make plot the event emitter itself.
         */
        plotObj._ev = ev;

        /*
         * Create a second event handler that will manage events *internally*.
         * This allows parts of plotly to respond to thing like relayout without
         * having to use the user-facing event handler. They cannot peacefully
         * coexist on the same handler because a user invoking
         * plotObj.removeAllListeners() would detach internal events, breaking
         * plotly.
         */
        plotObj._internalEv = internalEv;

        /*
         * Assign bound methods from the ev to the plot object. These methods
         * will reference the 'this' of plot._ev even though they are methods
         * of plot. This will keep the event machinery away from the plot object
         * which currently is often a DOM element but presents an API that will
         * continue to function when plot becomes an emitter. Not all EventEmitter
         * methods have been bound to `plot` as some do not currently add value to
         * the Plotly event API.
         */
        plotObj.on = ev.on.bind(ev);
        plotObj.once = ev.once.bind(ev);
        plotObj.removeListener = ev.removeListener.bind(ev);
        plotObj.removeAllListeners = ev.removeAllListeners.bind(ev);

        /*
         * Create funtions for managing internal events. These are *only* triggered
         * by the mirroring of external events via the emit function.
         */
        plotObj._internalOn = internalEv.on.bind(internalEv);
        plotObj._internalOnce = internalEv.once.bind(internalEv);
        plotObj._removeInternalListener = internalEv.removeListener.bind(internalEv);
        plotObj._removeAllInternalListeners = internalEv.removeAllListeners.bind(internalEv);

        /*
         * We must wrap emit to continue to support JQuery events. The idea
         * is to check to see if the user is using JQuery events, if they are
         * we emit JQuery events to trigger user handlers as well as the EventEmitter
         * events.
         */
        plotObj.emit = function(event, data) {
            if(typeof jQuery !== 'undefined') {
                jQuery(plotObj).trigger(event, data);
            }

            ev.emit(event, data);
            internalEv.emit(event, data);
        };

        return plotObj;
    },

    /*
     * This function behaves like jQueries triggerHandler. It calls
     * all handlers for a particular event and returns the return value
     * of the LAST handler. This function also triggers jQuery's
     * triggerHandler for backwards compatibility.
     *
     * Note: triggerHandler has been recommended for deprecation in v2.0.0,
     * so the additional behavior of triggerHandler triggering internal events
     * is deliberate excluded in order to avoid reinforcing more usage.
     */
    triggerHandler: function(plotObj, event, data) {
        var jQueryHandlerValue;
        var nodeEventHandlerValue;
        /*
         * If Jquery exists run all its handlers for this event and
         * collect the return value of the LAST handler function
         */
        if(typeof jQuery !== 'undefined') {
            jQueryHandlerValue = jQuery(plotObj).triggerHandler(event, data);
        }

        /*
         * Now run all the node style event handlers
         */
        var ev = plotObj._ev;
        if(!ev) return jQueryHandlerValue;

        var handlers = ev._events[event];
        if(!handlers) return jQueryHandlerValue;

        /*
         * handlers can be function or an array of functions
         */
        if(typeof handlers === 'function') handlers = [handlers];
        var lastHandler = handlers.pop();

        /*
         * Call all the handlers except the last one.
         */
        for(var i = 0; i < handlers.length; i++) {
            handlers[i](data);
        }

        /*
         * Now call the final handler and collect its value
         */
        nodeEventHandlerValue = lastHandler(data);

        /*
         * Return either the jquery handler value if it exists or the
         * nodeEventHandler value. Jquery event value superceeds nodejs
         * events for backwards compatability reasons.
         */
        return jQueryHandlerValue !== undefined ? jQueryHandlerValue :
            nodeEventHandlerValue;
    },

    purge: function(plotObj) {
        delete plotObj._ev;
        delete plotObj.on;
        delete plotObj.once;
        delete plotObj.removeListener;
        delete plotObj.removeAllListeners;
        delete plotObj.emit;

        delete plotObj._ev;
        delete plotObj._internalEv;
        delete plotObj._internalOn;
        delete plotObj._internalOnce;
        delete plotObj._removeInternalListener;
        delete plotObj._removeAllInternalListeners;

        return plotObj;
    }

};

module.exports = Events;

},{"events":95}],603:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isPlainObject = require('./is_plain_object.js');
var isArray = Array.isArray;

function primitivesLoopSplice(source, target) {
    var i, value;
    for(i = 0; i < source.length; i++) {
        value = source[i];
        if(value !== null && typeof(value) === 'object') {
            return false;
        }
        if(value !== void(0)) {
            target[i] = value;
        }
    }
    return true;
}

exports.extendFlat = function() {
    return _extend(arguments, false, false, false);
};

exports.extendDeep = function() {
    return _extend(arguments, true, false, false);
};

exports.extendDeepAll = function() {
    return _extend(arguments, true, true, false);
};

exports.extendDeepNoArrays = function() {
    return _extend(arguments, true, false, true);
};

/*
 * Inspired by https://github.com/justmoon/node-extend/blob/master/index.js
 * All credit to the jQuery authors for perfecting this amazing utility.
 *
 * API difference with jQuery version:
 * - No optional boolean (true -> deep extend) first argument,
 *   use `extendFlat` for first-level only extend and
 *   use `extendDeep` for a deep extend.
 *
 * Other differences with jQuery version:
 * - Uses a modern (and faster) isPlainObject routine.
 * - Expected to work with object {} and array [] arguments only.
 * - Does not check for circular structure.
 *   FYI: jQuery only does a check across one level.
 *   Warning: this might result in infinite loops.
 *
 */
function _extend(inputs, isDeep, keepAllKeys, noArrayCopies) {
    var target = inputs[0],
        length = inputs.length;

    var input, key, src, copy, copyIsArray, clone, allPrimitives;

    if(length === 2 && isArray(target) && isArray(inputs[1]) && target.length === 0) {

        allPrimitives = primitivesLoopSplice(inputs[1], target);

        if(allPrimitives) {
            return target;
        } else {
            target.splice(0, target.length); // reset target and continue to next block
        }
    }

    for(var i = 1; i < length; i++) {
        input = inputs[i];

        for(key in input) {
            src = target[key];
            copy = input[key];

            // Stop early and just transfer the array if array copies are disallowed:
            if(noArrayCopies && isArray(copy)) {
                target[key] = copy;
            }

            // recurse if we're merging plain objects or arrays
            else if(isDeep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
                if(copyIsArray) {
                    copyIsArray = false;
                    clone = src && isArray(src) ? src : [];
                } else {
                    clone = src && isPlainObject(src) ? src : {};
                }

                // never move original objects, clone them
                target[key] = _extend([clone, copy], isDeep, keepAllKeys, noArrayCopies);
            }

            // don't bring in undefined values, except for extendDeepAll
            else if(typeof copy !== 'undefined' || keepAllKeys) {
                target[key] = copy;
            }
        }
    }

    return target;
}

},{"./is_plain_object.js":612}],604:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


/**
 * Return news array containing only the unique items
 * found in input array.
 *
 * IMPORTANT: Note that items are considered unique
 * if `String({})` is unique. For example;
 *
 *  Lib.filterUnique([ { a: 1 }, { b: 2 } ])
 *
 *  returns [{ a: 1 }]
 *
 * and
 *
 *  Lib.filterUnique([ '1', 1 ])
 *
 *  returns ['1']
 *
 *
 * @param {array} array base array
 * @return {array} new filtered array
 */
module.exports = function filterUnique(array) {
    var seen = {},
        out = [],
        j = 0;

    for(var i = 0; i < array.length; i++) {
        var item = array[i];

        if(seen[item] !== 1) {
            seen[item] = 1;
            out[j++] = item;
        }
    }

    return out;
};

},{}],605:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/** Filter out object items with visible !== true
 *  insider array container.
 *
 *  @param {array of objects} container
 *  @return {array of objects} of length <= container
 *
 */
module.exports = function filterVisible(container) {
    var out = [];

    for(var i = 0; i < container.length; i++) {
        var item = container[i];

        if(item.visible === true) out.push(item);
    }

    return out;
};

},{}],606:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var countryRegex = require('country-regex');
var Lib = require('../lib');


// make list of all country iso3 ids from at runtime
var countryIds = Object.keys(countryRegex);

var locationmodeToIdFinder = {
    'ISO-3': Lib.identity,
    'USA-states': Lib.identity,
    'country names': countryNameToISO3
};

exports.locationToFeature = function(locationmode, location, features) {
    var locationId = getLocationId(locationmode, location);

    if(locationId) {
        for(var i = 0; i < features.length; i++) {
            var feature = features[i];

            if(feature.id === locationId) return feature;
        }

        Lib.warn([
            'Location with id', locationId,
            'does not have a matching topojson feature at this resolution.'
        ].join(' '));
    }

    return false;
};

function getLocationId(locationmode, location) {
    var idFinder = locationmodeToIdFinder[locationmode];
    return idFinder(location);
}

function countryNameToISO3(countryName) {
    for(var i = 0; i < countryIds.length; i++) {
        var iso3 = countryIds[i],
            regex = new RegExp(countryRegex[iso3]);

        if(regex.test(countryName.toLowerCase())) return iso3;
    }

    Lib.warn('Unrecognized country name: ' + countryName + '.');

    return false;
}

},{"../lib":610,"country-regex":79}],607:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/**
 * Convert calcTrace to GeoJSON 'MultiLineString' coordinate arrays
 *
 * @param {object} calcTrace
 *  gd.calcdata item.
 *  Note that calcTrace[i].lonlat is assumed to be defined
 *
 * @return {array}
 *  return line coords array (or array of arrays)
 *
 */
exports.calcTraceToLineCoords = function(calcTrace) {
    var trace = calcTrace[0].trace,
        connectgaps = trace.connectgaps;

    var coords = [],
        lineString = [];

    for(var i = 0; i < calcTrace.length; i++) {
        var calcPt = calcTrace[i];

        lineString.push(calcPt.lonlat);

        if(!connectgaps && calcPt.gapAfter && lineString.length > 0) {
            coords.push(lineString);
            lineString = [];
        }
    }

    coords.push(lineString);

    return coords;
};


/**
 * Make line ('LineString' or 'MultiLineString') GeoJSON
 *
 * @param {array} coords
 *  results form calcTraceToLineCoords
 * @param {object} trace
 *  (optional) full trace object to be added on to output
 *
 * @return {object} out
 *  GeoJSON object
 *
 */
exports.makeLine = function(coords, trace) {
    var out = {};

    if(coords.length === 1) {
        out = {
            type: 'LineString',
            coordinates: coords[0]
        };
    }
    else {
        out = {
            type: 'MultiLineString',
            coordinates: coords
        };
    }

    if(trace) out.trace = trace;

    return out;
};

/**
 * Make polygon ('Polygon' or 'MultiPolygon') GeoJSON
 *
 * @param {array} coords
 *  results form calcTraceToLineCoords
 * @param {object} trace
 *  (optional) full trace object to be added on to output
 *
 * @return {object} out
 *  GeoJSON object
 */
exports.makePolygon = function(coords, trace) {
    var out = {};

    if(coords.length === 1) {
        out = {
            type: 'Polygon',
            coordinates: coords
        };
    }
    else {
        var _coords = new Array(coords.length);

        for(var i = 0; i < coords.length; i++) {
            _coords[i] = [coords[i]];
        }

        out = {
            type: 'MultiPolygon',
            coordinates: _coords
        };
    }

    if(trace) out.trace = trace;

    return out;
};

/**
 * Make blank GeoJSON
 *
 * @return {object}
 *  Blank GeoJSON object
 *
 */
exports.makeBlank = function() {
    return {
        type: 'Point',
        coordinates: []
    };
};

},{}],608:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');
var isNumeric = require('fast-isnumeric');

var Colorscale = require('../components/colorscale');
var colorDflt = require('../components/color/attributes').defaultLine;

var str2RgbaArray = require('./str2rgbarray');

var opacityDflt = 1;

function calculateColor(colorIn, opacityIn) {
    var colorOut = str2RgbaArray(colorIn);
    colorOut[3] *= opacityIn;
    return colorOut;
}

function validateColor(colorIn) {
    return tinycolor(colorIn).isValid() ? colorIn : colorDflt;
}

function validateOpacity(opacityIn) {
    return isNumeric(opacityIn) ? opacityIn : opacityDflt;
}

function formatColor(containerIn, opacityIn, len) {
    var colorIn = containerIn.color,
        isArrayColorIn = Array.isArray(colorIn),
        isArrayOpacityIn = Array.isArray(opacityIn),
        colorOut = [];

    var sclFunc, getColor, getOpacity, colori, opacityi;

    if(containerIn.colorscale !== undefined) {
        sclFunc = Colorscale.makeColorScaleFunc(
            Colorscale.extractScale(
                containerIn.colorscale,
                containerIn.cmin,
                containerIn.cmax
            )
        );
    }
    else sclFunc = validateColor;

    if(isArrayColorIn) {
        getColor = function(c, i) {
            return c[i] === undefined ? colorDflt : sclFunc(c[i]);
        };
    }
    else getColor = validateColor;

    if(isArrayOpacityIn) {
        getOpacity = function(o, i) {
            return o[i] === undefined ? opacityDflt : validateOpacity(o[i]);
        };
    }
    else getOpacity = validateOpacity;

    if(isArrayColorIn || isArrayOpacityIn) {
        for(var i = 0; i < len; i++) {
            colori = getColor(colorIn, i);
            opacityi = getOpacity(opacityIn, i);
            colorOut[i] = calculateColor(colori, opacityi);
        }
    }
    else colorOut = calculateColor(colorIn, opacityIn);

    return colorOut;
}

module.exports = formatColor;

},{"../components/color/attributes":509,"../components/colorscale":524,"./str2rgbarray":624,"fast-isnumeric":97,"tinycolor2":985}],609:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var toSuperScript = require('superscript-text');
var stringMappings = require('../constants/string_mappings');

function fixSuperScript(x) {
    var idx = 0;

    while((idx = x.indexOf('<sup>', idx)) >= 0) {
        var nidx = x.indexOf('</sup>', idx);
        if(nidx < idx) break;

        x = x.slice(0, idx) + toSuperScript(x.slice(idx + 5, nidx)) + x.slice(nidx + 6);
    }

    return x;
}

function fixBR(x) {
    return x.replace(/\<br\>/g, '\n');
}

function stripTags(x) {
    return x.replace(/\<.*\>/g, '');
}

function fixEntities(x) {
    var entityToUnicode = stringMappings.entityToUnicode;
    var idx = 0;

    while((idx = x.indexOf('&', idx)) >= 0) {
        var nidx = x.indexOf(';', idx);
        if(nidx < idx) {
            idx += 1;
            continue;
        }

        var entity = entityToUnicode[x.slice(idx + 1, nidx)];
        if(entity) {
            x = x.slice(0, idx) + entity + x.slice(nidx + 1);
        } else {
            x = x.slice(0, idx) + x.slice(nidx + 1);
        }
    }

    return x;
}

function convertHTMLToUnicode(html) {
    return '' +
        fixEntities(
        stripTags(
        fixSuperScript(
        fixBR(
          html))));
}

module.exports = convertHTMLToUnicode;

},{"../constants/string_mappings":594,"superscript-text":981}],610:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var lib = module.exports = {};

lib.nestedProperty = require('./nested_property');
lib.isPlainObject = require('./is_plain_object');
lib.isArray = require('./is_array');
lib.mod = require('./mod');

var coerceModule = require('./coerce');
lib.valObjects = coerceModule.valObjects;
lib.coerce = coerceModule.coerce;
lib.coerce2 = coerceModule.coerce2;
lib.coerceFont = coerceModule.coerceFont;
lib.validate = coerceModule.validate;

var datesModule = require('./dates');
lib.dateTime2ms = datesModule.dateTime2ms;
lib.isDateTime = datesModule.isDateTime;
lib.ms2DateTime = datesModule.ms2DateTime;
lib.ms2DateTimeLocal = datesModule.ms2DateTimeLocal;
lib.cleanDate = datesModule.cleanDate;
lib.isJSDate = datesModule.isJSDate;
lib.formatDate = datesModule.formatDate;
lib.incrementMonth = datesModule.incrementMonth;
lib.dateTick0 = datesModule.dateTick0;
lib.dfltRange = datesModule.dfltRange;
lib.findExactDates = datesModule.findExactDates;
lib.MIN_MS = datesModule.MIN_MS;
lib.MAX_MS = datesModule.MAX_MS;

var searchModule = require('./search');
lib.findBin = searchModule.findBin;
lib.sorterAsc = searchModule.sorterAsc;
lib.sorterDes = searchModule.sorterDes;
lib.distinctVals = searchModule.distinctVals;
lib.roundUp = searchModule.roundUp;

var statsModule = require('./stats');
lib.aggNums = statsModule.aggNums;
lib.len = statsModule.len;
lib.mean = statsModule.mean;
lib.variance = statsModule.variance;
lib.stdev = statsModule.stdev;
lib.interp = statsModule.interp;

var matrixModule = require('./matrix');
lib.init2dArray = matrixModule.init2dArray;
lib.transposeRagged = matrixModule.transposeRagged;
lib.dot = matrixModule.dot;
lib.translationMatrix = matrixModule.translationMatrix;
lib.rotationMatrix = matrixModule.rotationMatrix;
lib.rotationXYMatrix = matrixModule.rotationXYMatrix;
lib.apply2DTransform = matrixModule.apply2DTransform;
lib.apply2DTransform2 = matrixModule.apply2DTransform2;

var extendModule = require('./extend');
lib.extendFlat = extendModule.extendFlat;
lib.extendDeep = extendModule.extendDeep;
lib.extendDeepAll = extendModule.extendDeepAll;
lib.extendDeepNoArrays = extendModule.extendDeepNoArrays;

var loggersModule = require('./loggers');
lib.log = loggersModule.log;
lib.warn = loggersModule.warn;
lib.error = loggersModule.error;

lib.notifier = require('./notifier');

lib.filterUnique = require('./filter_unique');
lib.filterVisible = require('./filter_visible');


lib.cleanNumber = require('./clean_number');

/**
 * swap x and y of the same attribute in container cont
 * specify attr with a ? in place of x/y
 * you can also swap other things than x/y by providing part1 and part2
 */
lib.swapAttrs = function(cont, attrList, part1, part2) {
    if(!part1) part1 = 'x';
    if(!part2) part2 = 'y';
    for(var i = 0; i < attrList.length; i++) {
        var attr = attrList[i],
            xp = lib.nestedProperty(cont, attr.replace('?', part1)),
            yp = lib.nestedProperty(cont, attr.replace('?', part2)),
            temp = xp.get();
        xp.set(yp.get());
        yp.set(temp);
    }
};

/**
 * to prevent event bubbling, in particular text selection during drag.
 * see http://stackoverflow.com/questions/5429827/
 *      how-can-i-prevent-text-element-selection-with-cursor-drag
 * for maximum effect use:
 *      return pauseEvent(e);
 */
lib.pauseEvent = function(e) {
    if(e.stopPropagation) e.stopPropagation();
    if(e.preventDefault) e.preventDefault();
    e.cancelBubble = true;
    return false;
};

// constrain - restrict a number v to be between v0 and v1
lib.constrain = function(v, v0, v1) {
    if(v0 > v1) return Math.max(v1, Math.min(v0, v));
    return Math.max(v0, Math.min(v1, v));
};

/**
 * do two bounding boxes from getBoundingClientRect,
 * ie {left,right,top,bottom,width,height}, overlap?
 * takes optional padding pixels
 */
lib.bBoxIntersect = function(a, b, pad) {
    pad = pad || 0;
    return (a.left <= b.right + pad &&
            b.left <= a.right + pad &&
            a.top <= b.bottom + pad &&
            b.top <= a.bottom + pad);
};

// minor convenience/performance booster for d3...
lib.identity = function(d) { return d; };

// minor convenience helper
lib.noop = function() {};

/*
 * simpleMap: alternative to Array.map that only
 * passes on the element and up to 2 extra args you
 * provide (but not the array index or the whole array)
 *
 * array: the array to map it to
 * func: the function to apply
 * x1, x2: optional extra args
 */
lib.simpleMap = function(array, func, x1, x2) {
    var len = array.length,
        out = new Array(len);
    for(var i = 0; i < len; i++) out[i] = func(array[i], x1, x2);
    return out;
};

// random string generator
lib.randstr = function randstr(existing, bits, base) {
    /*
     * Include number of bits, the base of the string you want
     * and an optional array of existing strings to avoid.
     */
    if(!base) base = 16;
    if(bits === undefined) bits = 24;
    if(bits <= 0) return '0';

    var digits = Math.log(Math.pow(2, bits)) / Math.log(base),
        res = '',
        i,
        b,
        x;

    for(i = 2; digits === Infinity; i *= 2) {
        digits = Math.log(Math.pow(2, bits / i)) / Math.log(base) * i;
    }

    var rem = digits - Math.floor(digits);

    for(i = 0; i < Math.floor(digits); i++) {
        x = Math.floor(Math.random() * base).toString(base);
        res = x + res;
    }

    if(rem) {
        b = Math.pow(base, rem);
        x = Math.floor(Math.random() * b).toString(base);
        res = x + res;
    }

    var parsed = parseInt(res, base);
    if((existing && (existing.indexOf(res) > -1)) ||
         (parsed !== Infinity && parsed >= Math.pow(2, bits))) {
        return randstr(existing, bits, base);
    }
    else return res;
};

lib.OptionControl = function(opt, optname) {
    /*
     * An environment to contain all option setters and
     * getters that collectively modify opts.
     *
     * You can call up opts from any function in new object
     * as this.optname || this.opt
     *
     * See FitOpts for example of usage
     */
    if(!opt) opt = {};
    if(!optname) optname = 'opt';

    var self = {};
    self.optionList = [];

    self._newoption = function(optObj) {
        optObj[optname] = opt;
        self[optObj.name] = optObj;
        self.optionList.push(optObj);
    };

    self['_' + optname] = opt;
    return self;
};

/**
 * lib.smooth: smooth arrayIn by convolving with
 * a hann window with given full width at half max
 * bounce the ends in, so the output has the same length as the input
 */
lib.smooth = function(arrayIn, FWHM) {
    FWHM = Math.round(FWHM) || 0; // only makes sense for integers
    if(FWHM < 2) return arrayIn;

    var alen = arrayIn.length,
        alen2 = 2 * alen,
        wlen = 2 * FWHM - 1,
        w = new Array(wlen),
        arrayOut = new Array(alen),
        i,
        j,
        k,
        v;

    // first make the window array
    for(i = 0; i < wlen; i++) {
        w[i] = (1 - Math.cos(Math.PI * (i + 1) / FWHM)) / (2 * FWHM);
    }

    // now do the convolution
    for(i = 0; i < alen; i++) {
        v = 0;
        for(j = 0; j < wlen; j++) {
            k = i + j + 1 - FWHM;

            // multibounce
            if(k < -alen) k -= alen2 * Math.round(k / alen2);
            else if(k >= alen2) k -= alen2 * Math.floor(k / alen2);

            // single bounce
            if(k < 0) k = - 1 - k;
            else if(k >= alen) k = alen2 - 1 - k;

            v += arrayIn[k] * w[j];
        }
        arrayOut[i] = v;
    }

    return arrayOut;
};

/**
 * syncOrAsync: run a sequence of functions synchronously
 * as long as its returns are not promises (ie have no .then)
 * includes one argument arg to send to all functions...
 * this is mainly just to prevent us having to make wrapper functions
 * when the only purpose of the wrapper is to reference gd
 * and a final step to be executed at the end
 * TODO: if there's an error and everything is sync,
 * this doesn't happen yet because we want to make sure
 * that it gets reported
 */
lib.syncOrAsync = function(sequence, arg, finalStep) {
    var ret, fni;

    function continueAsync() {
        return lib.syncOrAsync(sequence, arg, finalStep);
    }

    while(sequence.length) {
        fni = sequence.splice(0, 1)[0];
        ret = fni(arg);

        if(ret && ret.then) {
            return ret.then(continueAsync)
                .then(undefined, lib.promiseError);
        }
    }

    return finalStep && finalStep(arg);
};


/**
 * Helper to strip trailing slash, from
 * http://stackoverflow.com/questions/6680825/return-string-without-trailing-slash
 */
lib.stripTrailingSlash = function(str) {
    if(str.substr(-1) === '/') return str.substr(0, str.length - 1);
    return str;
};

lib.noneOrAll = function(containerIn, containerOut, attrList) {
    /**
     * some attributes come together, so if you have one of them
     * in the input, you should copy the default values of the others
     * to the input as well.
     */
    if(!containerIn) return;

    var hasAny = false,
        hasAll = true,
        i,
        val;

    for(i = 0; i < attrList.length; i++) {
        val = containerIn[attrList[i]];
        if(val !== undefined && val !== null) hasAny = true;
        else hasAll = false;
    }

    if(hasAny && !hasAll) {
        for(i = 0; i < attrList.length; i++) {
            containerIn[attrList[i]] = containerOut[attrList[i]];
        }
    }
};

/**
 * Push array with unique items
 *
 * @param {array} array
 *  array to be filled
 * @param {any} item
 *  item to be or not to be inserted
 * @return {array}
 *  ref to array (now possibly containing one more item)
 *
 */
lib.pushUnique = function(array, item) {
    if(item && array.indexOf(item) === -1) array.push(item);

    return array;
};

lib.mergeArray = function(traceAttr, cd, cdAttr) {
    if(Array.isArray(traceAttr)) {
        var imax = Math.min(traceAttr.length, cd.length);
        for(var i = 0; i < imax; i++) cd[i][cdAttr] = traceAttr[i];
    }
};

/**
 * modified version of jQuery's extend to strip out private objs and functions,
 * and cut arrays down to first <arraylen> or 1 elements
 * because extend-like algorithms are hella slow
 * obj2 is assumed to already be clean of these things (including no arrays)
 */
lib.minExtend = function(obj1, obj2) {
    var objOut = {};
    if(typeof obj2 !== 'object') obj2 = {};
    var arrayLen = 3,
        keys = Object.keys(obj1),
        i,
        k,
        v;
    for(i = 0; i < keys.length; i++) {
        k = keys[i];
        v = obj1[k];
        if(k.charAt(0) === '_' || typeof v === 'function') continue;
        else if(k === 'module') objOut[k] = v;
        else if(Array.isArray(v)) objOut[k] = v.slice(0, arrayLen);
        else if(v && (typeof v === 'object')) objOut[k] = lib.minExtend(obj1[k], obj2[k]);
        else objOut[k] = v;
    }

    keys = Object.keys(obj2);
    for(i = 0; i < keys.length; i++) {
        k = keys[i];
        v = obj2[k];
        if(typeof v !== 'object' || !(k in objOut) || typeof objOut[k] !== 'object') {
            objOut[k] = v;
        }
    }

    return objOut;
};

lib.titleCase = function(s) {
    return s.charAt(0).toUpperCase() + s.substr(1);
};

lib.containsAny = function(s, fragments) {
    for(var i = 0; i < fragments.length; i++) {
        if(s.indexOf(fragments[i]) !== -1) return true;
    }
    return false;
};

// get the parent Plotly plot of any element. Whoo jquery-free tree climbing!
lib.getPlotDiv = function(el) {
    for(; el && el.removeAttribute; el = el.parentNode) {
        if(lib.isPlotDiv(el)) return el;
    }
};

lib.isPlotDiv = function(el) {
    var el3 = d3.select(el);
    return el3.node() instanceof HTMLElement &&
        el3.size() &&
        el3.classed('js-plotly-plot');
};

lib.removeElement = function(el) {
    var elParent = el && el.parentNode;
    if(elParent) elParent.removeChild(el);
};

/**
 * for dynamically adding style rules
 * makes one stylesheet that contains all rules added
 * by all calls to this function
 */
lib.addStyleRule = function(selector, styleString) {
    if(!lib.styleSheet) {
        var style = document.createElement('style');
        // WebKit hack :(
        style.appendChild(document.createTextNode(''));
        document.head.appendChild(style);
        lib.styleSheet = style.sheet;
    }
    var styleSheet = lib.styleSheet;

    if(styleSheet.insertRule) {
        styleSheet.insertRule(selector + '{' + styleString + '}', 0);
    }
    else if(styleSheet.addRule) {
        styleSheet.addRule(selector, styleString, 0);
    }
    else lib.warn('addStyleRule failed');
};

lib.getTranslate = function(element) {

    var re = /.*\btranslate\((\d*\.?\d*)[^\d]*(\d*\.?\d*)[^\d].*/,
        getter = element.attr ? 'attr' : 'getAttribute',
        transform = element[getter]('transform') || '';

    var translate = transform.replace(re, function(match, p1, p2) {
        return [p1, p2].join(' ');
    })
    .split(' ');

    return {
        x: +translate[0] || 0,
        y: +translate[1] || 0
    };
};

lib.setTranslate = function(element, x, y) {

    var re = /(\btranslate\(.*?\);?)/,
        getter = element.attr ? 'attr' : 'getAttribute',
        setter = element.attr ? 'attr' : 'setAttribute',
        transform = element[getter]('transform') || '';

    x = x || 0;
    y = y || 0;

    transform = transform.replace(re, '').trim();
    transform += ' translate(' + x + ', ' + y + ')';
    transform = transform.trim();

    element[setter]('transform', transform);

    return transform;
};

lib.getScale = function(element) {

    var re = /.*\bscale\((\d*\.?\d*)[^\d]*(\d*\.?\d*)[^\d].*/,
        getter = element.attr ? 'attr' : 'getAttribute',
        transform = element[getter]('transform') || '';

    var translate = transform.replace(re, function(match, p1, p2) {
        return [p1, p2].join(' ');
    })
    .split(' ');

    return {
        x: +translate[0] || 1,
        y: +translate[1] || 1
    };
};

lib.setScale = function(element, x, y) {

    var re = /(\bscale\(.*?\);?)/,
        getter = element.attr ? 'attr' : 'getAttribute',
        setter = element.attr ? 'attr' : 'setAttribute',
        transform = element[getter]('transform') || '';

    x = x || 1;
    y = y || 1;

    transform = transform.replace(re, '').trim();
    transform += ' scale(' + x + ', ' + y + ')';
    transform = transform.trim();

    element[setter]('transform', transform);

    return transform;
};

lib.setPointGroupScale = function(selection, x, y) {
    var t, scale, re;

    x = x || 1;
    y = y || 1;

    if(x === 1 && y === 1) {
        scale = '';
    } else {
        // The same scale transform for every point:
        scale = ' scale(' + x + ',' + y + ')';
    }

    // A regex to strip any existing scale:
    re = /\s*sc.*/;

    selection.each(function() {
        // Get the transform:
        t = (this.getAttribute('transform') || '').replace(re, '');
        t += scale;
        t = t.trim();

        // Append the scale transform
        this.setAttribute('transform', t);
    });

    return scale;
};

lib.isIE = function() {
    return typeof window.navigator.msSaveBlob !== 'undefined';
};


/**
 * Converts a string path to an object.
 *
 * When given a string containing an array element, it will create a `null`
 * filled array of the given size.
 *
 * @example
 * lib.objectFromPath('nested.test[2].path', 'value');
 * // returns { nested: { test: [null, null, { path: 'value' }]}
 *
 * @param   {string}    path to nested value
 * @param   {*}         any value to be set
 *
 * @return {Object} the constructed object with a full nested path
 */
lib.objectFromPath = function(path, value) {
    var keys = path.split('.'),
        tmpObj,
        obj = tmpObj = {};

    for(var i = 0; i < keys.length; i++) {
        var key = keys[i];
        var el = null;

        var parts = keys[i].match(/(.*)\[([0-9]+)\]/);

        if(parts) {
            key = parts[1];
            el = parts[2];

            tmpObj = tmpObj[key] = [];

            if(i === keys.length - 1) {
                tmpObj[el] = value;
            } else {
                tmpObj[el] = {};
            }

            tmpObj = tmpObj[el];
        } else {

            if(i === keys.length - 1) {
                tmpObj[key] = value;
            } else {
                tmpObj[key] = {};
            }

            tmpObj = tmpObj[key];
        }
    }

    return obj;
};

/**
 * Iterate through an object in-place, converting dotted properties to objects.
 *
 * Examples:
 *
 *   lib.expandObjectPaths({'nested.test.path': 'value'});
 *     => { nested: { test: {path: 'value'}}}
 *
 * It also handles array notation, e.g.:
 *
 *   lib.expandObjectPaths({'foo[1].bar': 'value'});
 *     => { foo: [null, {bar: value}] }
 *
 * It handles merges the results when two properties are specified in parallel:
 *
 *   lib.expandObjectPaths({'foo[1].bar': 10, 'foo[0].bar': 20});
 *     => { foo: [{bar: 10}, {bar: 20}] }
 *
 * It does NOT, however, merge mulitple mutliply-nested arrays::
 *
 *   lib.expandObjectPaths({'marker[1].range[1]': 5, 'marker[1].range[0]': 4})
 *     => { marker: [null, {range: 4}] }
 */

// Store this to avoid recompiling regex on *every* prop since this may happen many
// many times for animations. Could maybe be inside the function. Not sure about
// scoping vs. recompilation tradeoff, but at least it's not just inlining it into
// the inner loop.
var dottedPropertyRegex = /^([^\[\.]+)\.(.+)?/;
var indexedPropertyRegex = /^([^\.]+)\[([0-9]+)\](\.)?(.+)?/;

lib.expandObjectPaths = function(data) {
    var match, key, prop, datum, idx, dest, trailingPath;
    if(typeof data === 'object' && !Array.isArray(data)) {
        for(key in data) {
            if(data.hasOwnProperty(key)) {
                if((match = key.match(dottedPropertyRegex))) {
                    datum = data[key];
                    prop = match[1];

                    delete data[key];

                    data[prop] = lib.extendDeepNoArrays(data[prop] || {}, lib.objectFromPath(key, lib.expandObjectPaths(datum))[prop]);
                } else if((match = key.match(indexedPropertyRegex))) {
                    datum = data[key];

                    prop = match[1];
                    idx = parseInt(match[2]);

                    delete data[key];

                    data[prop] = data[prop] || [];

                    if(match[3] === '.') {
                        // This is the case where theere are subsequent properties into which
                        // we must recurse, e.g. transforms[0].value
                        trailingPath = match[4];
                        dest = data[prop][idx] = data[prop][idx] || {};

                        // NB: Extend deep no arrays prevents this from working on multiple
                        // nested properties in the same object, e.g.
                        //
                        // {
                        //   foo[0].bar[1].range
                        //   foo[0].bar[0].range
                        // }
                        //
                        // In this case, the extendDeepNoArrays will overwrite one array with
                        // the other, so that both properties *will not* be present in the
                        // result. Fixing this would require a more intelligent tracking
                        // of changes and merging than extendDeepNoArrays currently accomplishes.
                        lib.extendDeepNoArrays(dest, lib.objectFromPath(trailingPath, lib.expandObjectPaths(datum)));
                    } else {
                        // This is the case where this property is the end of the line,
                        // e.g. xaxis.range[0]
                        data[prop][idx] = lib.expandObjectPaths(datum);
                    }
                } else {
                    data[key] = lib.expandObjectPaths(data[key]);
                }
            }
        }
    }

    return data;
};

/**
 * Converts value to string separated by the provided separators.
 *
 * @example
 * lib.numSeparate(2016, '.,');
 * // returns '2016'
 *
 * @example
 * lib.numSeparate(3000, '.,', true);
 * // returns '3,000'
 *
 * @example
 * lib.numSeparate(1234.56, '|,')
 * // returns '1,234|56'
 *
 * @param   {string|number} value       the value to be converted
 * @param   {string}    separators  string of decimal, then thousands separators
 * @param   {boolean}    separatethousands  boolean, 4-digit integers are separated if true
 *
 * @return  {string}    the value that has been separated
 */
lib.numSeparate = function(value, separators, separatethousands) {
    if(!separatethousands) separatethousands = false;

    if(typeof separators !== 'string' || separators.length === 0) {
        throw new Error('Separator string required for formatting!');
    }

    if(typeof value === 'number') {
        value = String(value);
    }

    var thousandsRe = /(\d+)(\d{3})/,
        decimalSep = separators.charAt(0),
        thouSep = separators.charAt(1);

    var x = value.split('.'),
        x1 = x[0],
        x2 = x.length > 1 ? decimalSep + x[1] : '';

    // Years are ignored for thousands separators
    if(thouSep && (x.length > 1 || x1.length > 4 || separatethousands)) {
        while(thousandsRe.test(x1)) {
            x1 = x1.replace(thousandsRe, '$1' + thouSep + '$2');
        }
    }

    return x1 + x2;
};

},{"./clean_number":599,"./coerce":600,"./dates":601,"./extend":603,"./filter_unique":604,"./filter_visible":605,"./is_array":611,"./is_plain_object":612,"./loggers":613,"./matrix":614,"./mod":615,"./nested_property":616,"./notifier":617,"./search":620,"./stats":623,"d3":86}],611:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * Return true for arrays, whether they're untyped or not.
 */
module.exports = function isArray(a) {
    return Array.isArray(a) || ArrayBuffer.isView(a);
};

},{}],612:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// more info: http://stackoverflow.com/questions/18531624/isplainobject-thing
module.exports = function isPlainObject(obj) {

    // We need to be a little less strict in the `imagetest` container because
    // of how async image requests are handled.
    //
    // N.B. isPlainObject(new Constructor()) will return true in `imagetest`
    if(window && window.process && window.process.versions) {
        return Object.prototype.toString.call(obj) === '[object Object]';
    }

    return (
        Object.prototype.toString.call(obj) === '[object Object]' &&
        Object.getPrototypeOf(obj) === Object.prototype
    );
};

},{}],613:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/* eslint-disable no-console */

var config = require('../plot_api/plot_config');

var loggers = module.exports = {};

/**
 * ------------------------------------------
 * debugging tools
 * ------------------------------------------
 */

loggers.log = function() {
    if(config.logging > 1) {
        var messages = ['LOG:'];

        for(var i = 0; i < arguments.length; i++) {
            messages.push(arguments[i]);
        }

        if(console.trace) {
            console.trace.apply(console, messages);
        } else {
            console.log.apply(console, messages);
        }
    }
};

loggers.warn = function() {
    if(config.logging > 0) {
        var messages = ['WARN:'];

        for(var i = 0; i < arguments.length; i++) {
            messages.push(arguments[i]);
        }

        if(console.trace) {
            console.trace.apply(console, messages);
        } else {
            console.log.apply(console, messages);
        }
    }
};

loggers.error = function() {
    if(config.logging > 0) {
        var messages = ['ERROR:'];

        for(var i = 0; i < arguments.length; i++) {
            messages.push(arguments[i]);
        }

        console.error.apply(console, arguments);
    }
};

},{"../plot_api/plot_config":630}],614:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


exports.init2dArray = function(rowLength, colLength) {
    var array = new Array(rowLength);
    for(var i = 0; i < rowLength; i++) array[i] = new Array(colLength);
    return array;
};

/**
 * transpose a (possibly ragged) 2d array z. inspired by
 * http://stackoverflow.com/questions/17428587/
 * transposing-a-2d-array-in-javascript
 */
exports.transposeRagged = function(z) {
    var maxlen = 0,
        zlen = z.length,
        i,
        j;
    // Maximum row length:
    for(i = 0; i < zlen; i++) maxlen = Math.max(maxlen, z[i].length);

    var t = new Array(maxlen);
    for(i = 0; i < maxlen; i++) {
        t[i] = new Array(zlen);
        for(j = 0; j < zlen; j++) t[i][j] = z[j][i];
    }

    return t;
};

// our own dot function so that we don't need to include numeric
exports.dot = function(x, y) {
    if(!(x.length && y.length) || x.length !== y.length) return null;

    var len = x.length,
        out,
        i;

    if(x[0].length) {
        // mat-vec or mat-mat
        out = new Array(len);
        for(i = 0; i < len; i++) out[i] = exports.dot(x[i], y);
    }
    else if(y[0].length) {
        // vec-mat
        var yTranspose = exports.transposeRagged(y);
        out = new Array(yTranspose.length);
        for(i = 0; i < yTranspose.length; i++) out[i] = exports.dot(x, yTranspose[i]);
    }
    else {
        // vec-vec
        out = 0;
        for(i = 0; i < len; i++) out += x[i] * y[i];
    }

    return out;
};

// translate by (x,y)
exports.translationMatrix = function(x, y) {
    return [[1, 0, x], [0, 1, y], [0, 0, 1]];
};

// rotate by alpha around (0,0)
exports.rotationMatrix = function(alpha) {
    var a = alpha * Math.PI / 180;
    return [[Math.cos(a), -Math.sin(a), 0],
            [Math.sin(a), Math.cos(a), 0],
            [0, 0, 1]];
};

// rotate by alpha around (x,y)
exports.rotationXYMatrix = function(a, x, y) {
    return exports.dot(
        exports.dot(exports.translationMatrix(x, y),
                    exports.rotationMatrix(a)),
        exports.translationMatrix(-x, -y));
};

// applies a 2D transformation matrix to either x and y params or an [x,y] array
exports.apply2DTransform = function(transform) {
    return function() {
        var args = arguments;
        if(args.length === 3) {
            args = args[0];
        }// from map
        var xy = arguments.length === 1 ? args[0] : [args[0], args[1]];
        return exports.dot(transform, [xy[0], xy[1], 1]).slice(0, 2);
    };
};

// applies a 2D transformation matrix to an [x1,y1,x2,y2] array (to transform a segment)
exports.apply2DTransform2 = function(transform) {
    var at = exports.apply2DTransform(transform);
    return function(xys) {
        return at(xys.slice(0, 2)).concat(at(xys.slice(2, 4)));
    };
};

},{}],615:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/**
 * sanitized modulus function that always returns in the range [0, d)
 * rather than (-d, 0] if v is negative
 */
module.exports = function mod(v, d) {
    var out = v % d;
    return out < 0 ? out + d : out;
};

},{}],616:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var isArray = require('./is_array');

/**
 * convert a string s (such as 'xaxis.range[0]')
 * representing a property of nested object into set and get methods
 * also return the string and object so we don't have to keep track of them
 * allows [-1] for an array index, to set a property inside all elements
 * of an array
 * eg if obj = {arr: [{a: 1}, {a: 2}]}
 * you can do p = nestedProperty(obj, 'arr[-1].a')
 * but you cannot set the array itself this way, to do that
 * just set the whole array.
 * eg if obj = {arr: [1, 2, 3]}
 * you can't do nestedProperty(obj, 'arr[-1]').set(5)
 * but you can do nestedProperty(obj, 'arr').set([5, 5, 5])
 */
module.exports = function nestedProperty(container, propStr) {
    if(isNumeric(propStr)) propStr = String(propStr);
    else if(typeof propStr !== 'string' ||
            propStr.substr(propStr.length - 4) === '[-1]') {
        throw 'bad property string';
    }

    var j = 0,
        propParts = propStr.split('.'),
        indexed,
        indices,
        i;

    // check for parts of the nesting hierarchy that are numbers (ie array elements)
    while(j < propParts.length) {
        // look for non-bracket chars, then any number of [##] blocks
        indexed = String(propParts[j]).match(/^([^\[\]]*)((\[\-?[0-9]*\])+)$/);
        if(indexed) {
            if(indexed[1]) propParts[j] = indexed[1];
            // allow propStr to start with bracketed array indices
            else if(j === 0) propParts.splice(0, 1);
            else throw 'bad property string';

            indices = indexed[2]
                .substr(1, indexed[2].length - 2)
                .split('][');

            for(i = 0; i < indices.length; i++) {
                j++;
                propParts.splice(j, 0, Number(indices[i]));
            }
        }
        j++;
    }

    if(typeof container !== 'object') {
        return badContainer(container, propStr, propParts);
    }

    return {
        set: npSet(container, propParts),
        get: npGet(container, propParts),
        astr: propStr,
        parts: propParts,
        obj: container
    };
};

function npGet(cont, parts) {
    return function() {
        var curCont = cont,
            curPart,
            allSame,
            out,
            i,
            j;

        for(i = 0; i < parts.length - 1; i++) {
            curPart = parts[i];
            if(curPart === -1) {
                allSame = true;
                out = [];
                for(j = 0; j < curCont.length; j++) {
                    out[j] = npGet(curCont[j], parts.slice(i + 1))();
                    if(out[j] !== out[0]) allSame = false;
                }
                return allSame ? out[0] : out;
            }
            if(typeof curPart === 'number' && !isArray(curCont)) {
                return undefined;
            }
            curCont = curCont[curPart];
            if(typeof curCont !== 'object' || curCont === null) {
                return undefined;
            }
        }

        // only hit this if parts.length === 1
        if(typeof curCont !== 'object' || curCont === null) return undefined;

        out = curCont[parts[i]];
        if(out === null) return undefined;
        return out;
    };
}

/*
 * Check known non-data-array arrays (containers). Data arrays only contain scalars,
 * so parts[end] values, such as -1 or n, indicate we are not dealing with a dataArray.
 * The ONLY case we are looking for is where the entire array is selected, parts[end] === 'x'
 * AND the replacement value is an array.
 */
function isDataArray(val, key) {

    var containers = ['annotations', 'shapes', 'range', 'domain', 'buttons'],
        isNotAContainer = containers.indexOf(key) === -1;

    return isArray(val) && isNotAContainer;
}

function npSet(cont, parts) {
    return function(val) {
        var curCont = cont,
            containerLevels = [cont],
            toDelete = emptyObj(val) && !isDataArray(val, parts[parts.length - 1]),
            curPart,
            i;

        for(i = 0; i < parts.length - 1; i++) {
            curPart = parts[i];

            if(typeof curPart === 'number' && !isArray(curCont)) {
                throw 'array index but container is not an array';
            }

            // handle special -1 array index
            if(curPart === -1) {
                toDelete = !setArrayAll(curCont, parts.slice(i + 1), val);
                if(toDelete) break;
                else return;
            }

            if(!checkNewContainer(curCont, curPart, parts[i + 1], toDelete)) {
                break;
            }

            curCont = curCont[curPart];

            if(typeof curCont !== 'object' || curCont === null) {
                throw 'container is not an object';
            }

            containerLevels.push(curCont);
        }

        if(toDelete) {
            if(i === parts.length - 1) delete curCont[parts[i]];
            pruneContainers(containerLevels);
        }
        else curCont[parts[i]] = val;
    };
}

// handle special -1 array index
function setArrayAll(containerArray, innerParts, val) {
    var arrayVal = isArray(val),
        allSet = true,
        thisVal = val,
        deleteThis = arrayVal ? false : emptyObj(val),
        firstPart = innerParts[0],
        i;

    for(i = 0; i < containerArray.length; i++) {
        if(arrayVal) {
            thisVal = val[i % val.length];
            deleteThis = emptyObj(thisVal);
        }
        if(deleteThis) allSet = false;
        if(!checkNewContainer(containerArray, i, firstPart, deleteThis)) {
            continue;
        }
        npSet(containerArray[i], innerParts)(thisVal);
    }
    return allSet;
}

/**
 * make new sub-container as needed.
 * returns false if there's no container and none is needed
 * because we're only deleting an attribute
 */
function checkNewContainer(container, part, nextPart, toDelete) {
    if(container[part] === undefined) {
        if(toDelete) return false;

        if(typeof nextPart === 'number') container[part] = [];
        else container[part] = {};
    }
    return true;
}

function pruneContainers(containerLevels) {
    var i,
        j,
        curCont,
        keys,
        remainingKeys;
    for(i = containerLevels.length - 1; i >= 0; i--) {
        curCont = containerLevels[i];
        remainingKeys = false;
        if(isArray(curCont)) {
            for(j = curCont.length - 1; j >= 0; j--) {
                if(emptyObj(curCont[j])) {
                    if(remainingKeys) curCont[j] = undefined;
                    else curCont.pop();
                }
                else remainingKeys = true;
            }
        }
        else if(typeof curCont === 'object' && curCont !== null) {
            keys = Object.keys(curCont);
            remainingKeys = false;
            for(j = keys.length - 1; j >= 0; j--) {
                if(emptyObj(curCont[keys[j]]) && !isDataArray(curCont[keys[j]], keys[j])) delete curCont[keys[j]];
                else remainingKeys = true;
            }
        }
        if(remainingKeys) return;
    }
}

function emptyObj(obj) {
    if(obj === undefined || obj === null) return true;
    if(typeof obj !== 'object') return false; // any plain value
    if(isArray(obj)) return !obj.length; // []
    return !Object.keys(obj).length; // {}
}

function badContainer(container, propStr, propParts) {
    return {
        set: function() { throw 'bad container'; },
        get: function() {},
        astr: propStr,
        parts: propParts,
        obj: container
    };
}

},{"./is_array":611,"fast-isnumeric":97}],617:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var NOTEDATA = [];

/**
 * notifier
 * @param {String} text The person's user name
 * @param {Number} [delay=1000] The delay time in milliseconds
 *          or 'long' which provides 2000 ms delay time.
 * @return {undefined} this function does not return a value
 */
module.exports = function(text, displayLength) {
    if(NOTEDATA.indexOf(text) !== -1) return;

    NOTEDATA.push(text);

    var ts = 1000;
    if(isNumeric(displayLength)) ts = displayLength;
    else if(displayLength === 'long') ts = 3000;

    var notifierContainer = d3.select('body')
        .selectAll('.plotly-notifier')
        .data([0]);
    notifierContainer.enter()
        .append('div')
        .classed('plotly-notifier', true);

    var notes = notifierContainer.selectAll('.notifier-note').data(NOTEDATA);

    function killNote(transition) {
        transition
            .duration(700)
            .style('opacity', 0)
            .each('end', function(thisText) {
                var thisIndex = NOTEDATA.indexOf(thisText);
                if(thisIndex !== -1) NOTEDATA.splice(thisIndex, 1);
                d3.select(this).remove();
            });
    }

    notes.enter().append('div')
        .classed('notifier-note', true)
        .style('opacity', 0)
        .each(function(thisText) {
            var note = d3.select(this);

            note.append('button')
                .classed('notifier-close', true)
                .html('&times;')
                .on('click', function() {
                    note.transition().call(killNote);
                });

            note.append('p').html(thisText);

            note.transition()
                    .duration(700)
                    .style('opacity', 1)
                .transition()
                    .delay(ts)
                    .call(killNote);
        });
};

},{"d3":86,"fast-isnumeric":97}],618:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var dot = require('./matrix').dot;

var polygon = module.exports = {};

/**
 * Turn an array of [x, y] pairs into a polygon object
 * that can test if points are inside it
 *
 * @param ptsIn Array of [x, y] pairs
 *
 * @returns polygon Object {xmin, xmax, ymin, ymax, pts, contains}
 *      (x|y)(min|max) are the bounding rect of the polygon
 *      pts is the original array, with the first pair repeated at the end
 *      contains is a function: (pt, omitFirstEdge)
 *          pt is the [x, y] pair to test
 *          omitFirstEdge truthy means points exactly on the first edge don't
 *              count. This is for use adding one polygon to another so we
 *              don't double-count the edge where they meet.
 *          returns boolean: is pt inside the polygon (including on its edges)
 */
polygon.tester = function tester(ptsIn) {
    var pts = ptsIn.slice(),
        xmin = pts[0][0],
        xmax = xmin,
        ymin = pts[0][1],
        ymax = ymin;

    pts.push(pts[0]);
    for(var i = 1; i < pts.length; i++) {
        xmin = Math.min(xmin, pts[i][0]);
        xmax = Math.max(xmax, pts[i][0]);
        ymin = Math.min(ymin, pts[i][1]);
        ymax = Math.max(ymax, pts[i][1]);
    }

    // do we have a rectangle? Handle this here, so we can use the same
    // tester for the rectangular case without sacrificing speed

    var isRect = false,
        rectFirstEdgeTest;

    if(pts.length === 5) {
        if(pts[0][0] === pts[1][0]) { // vert, horz, vert, horz
            if(pts[2][0] === pts[3][0] &&
                    pts[0][1] === pts[3][1] &&
                    pts[1][1] === pts[2][1]) {
                isRect = true;
                rectFirstEdgeTest = function(pt) { return pt[0] === pts[0][0]; };
            }
        }
        else if(pts[0][1] === pts[1][1]) { // horz, vert, horz, vert
            if(pts[2][1] === pts[3][1] &&
                    pts[0][0] === pts[3][0] &&
                    pts[1][0] === pts[2][0]) {
                isRect = true;
                rectFirstEdgeTest = function(pt) { return pt[1] === pts[0][1]; };
            }
        }
    }

    function rectContains(pt, omitFirstEdge) {
        var x = pt[0],
            y = pt[1];

        if(x < xmin || x > xmax || y < ymin || y > ymax) {
            // pt is outside the bounding box of polygon
            return false;
        }
        if(omitFirstEdge && rectFirstEdgeTest(pt)) return false;

        return true;
    }

    function contains(pt, omitFirstEdge) {
        var x = pt[0],
            y = pt[1];

        if(x < xmin || x > xmax || y < ymin || y > ymax) {
            // pt is outside the bounding box of polygon
            return false;
        }

        var imax = pts.length,
            x1 = pts[0][0],
            y1 = pts[0][1],
            crossings = 0,
            i,
            x0,
            y0,
            xmini,
            ycross;

        for(i = 1; i < imax; i++) {
            // find all crossings of a vertical line upward from pt with
            // polygon segments
            // crossings exactly at xmax don't count, unless the point is
            // exactly on the segment, then it counts as inside.
            x0 = x1;
            y0 = y1;
            x1 = pts[i][0];
            y1 = pts[i][1];
            xmini = Math.min(x0, x1);

            // outside the bounding box of this segment, it's only a crossing
            // if it's below the box.
            if(x < xmini || x > Math.max(x0, x1) || y > Math.max(y0, y1)) {
                continue;
            }
            else if(y < Math.min(y0, y1)) {
                // don't count the left-most point of the segment as a crossing
                // because we don't want to double-count adjacent crossings
                // UNLESS the polygon turns past vertical at exactly this x
                // Note that this is repeated below, but we can't factor it out
                // because
                if(x !== xmini) crossings++;
            }
            // inside the bounding box, check the actual line intercept
            else {
                // vertical segment - we know already that the point is exactly
                // on the segment, so mark the crossing as exactly at the point.
                if(x1 === x0) ycross = y;
                // any other angle
                else ycross = y0 + (x - x0) * (y1 - y0) / (x1 - x0);

                // exactly on the edge: counts as inside the polygon, unless it's the
                // first edge and we're omitting it.
                if(y === ycross) {
                    if(i === 1 && omitFirstEdge) return false;
                    return true;
                }

                if(y <= ycross && x !== xmini) crossings++;
            }
        }

        // if we've gotten this far, odd crossings means inside, even is outside
        return crossings % 2 === 1;
    }

    return {
        xmin: xmin,
        xmax: xmax,
        ymin: ymin,
        ymax: ymax,
        pts: pts,
        contains: isRect ? rectContains : contains,
        isRect: isRect
    };
};

/**
 * Test if a segment of a points array is bent or straight
 *
 * @param pts Array of [x, y] pairs
 * @param start the index of the proposed start of the straight section
 * @param end the index of the proposed end point
 * @param tolerance the max distance off the line connecting start and end
 *      before the line counts as bent
 * @returns boolean: true means this segment is bent, false means straight
 */
var isBent = polygon.isSegmentBent = function isBent(pts, start, end, tolerance) {
    var startPt = pts[start],
        segment = [pts[end][0] - startPt[0], pts[end][1] - startPt[1]],
        segmentSquared = dot(segment, segment),
        segmentLen = Math.sqrt(segmentSquared),
        unitPerp = [-segment[1] / segmentLen, segment[0] / segmentLen],
        i,
        part,
        partParallel;

    for(i = start + 1; i < end; i++) {
        part = [pts[i][0] - startPt[0], pts[i][1] - startPt[1]];
        partParallel = dot(part, segment);

        if(partParallel < 0 || partParallel > segmentSquared ||
            Math.abs(dot(part, unitPerp)) > tolerance) return true;
    }
    return false;
};

/**
 * Make a filtering polygon, to minimize the number of segments
 *
 * @param pts Array of [x, y] pairs (must start with at least 1 pair)
 * @param tolerance the maximum deviation from straight allowed for
 *      removing points to simplify the polygon
 *
 * @returns Object {addPt, raw, filtered}
 *      addPt is a function(pt: [x, y] pair) to add a raw point and
 *          continue filtering
 *      raw is all the input points
 *      filtered is the resulting filtered Array of [x, y] pairs
 */
polygon.filter = function filter(pts, tolerance) {
    var ptsFiltered = [pts[0]],
        doneRawIndex = 0,
        doneFilteredIndex = 0;

    function addPt(pt) {
        pts.push(pt);
        var prevFilterLen = ptsFiltered.length,
            iLast = doneRawIndex;
        ptsFiltered.splice(doneFilteredIndex + 1);

        for(var i = iLast + 1; i < pts.length; i++) {
            if(i === pts.length - 1 || isBent(pts, iLast, i + 1, tolerance)) {
                ptsFiltered.push(pts[i]);
                if(ptsFiltered.length < prevFilterLen - 2) {
                    doneRawIndex = i;
                    doneFilteredIndex = ptsFiltered.length - 1;
                }
                iLast = i;
            }
        }
    }

    if(pts.length > 1) {
        var lastPt = pts.pop();
        addPt(lastPt);
    }

    return {
        addPt: addPt,
        raw: pts,
        filtered: ptsFiltered
    };
};

},{"./matrix":614}],619:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../lib');
var config = require('../plot_api/plot_config');


/**
 * Copy arg array *without* removing `undefined` values from objects.
 *
 * @param gd
 * @param args
 * @returns {Array}
 */
function copyArgArray(gd, args) {
    var copy = [];
    var arg;

    for(var i = 0; i < args.length; i++) {
        arg = args[i];

        if(arg === gd) copy[i] = arg;
        else if(typeof arg === 'object') {
            copy[i] = Array.isArray(arg) ?
                Lib.extendDeep([], arg) :
                Lib.extendDeepAll({}, arg);
        }
        else copy[i] = arg;
    }

    return copy;
}


// -----------------------------------------------------
// Undo/Redo queue for plots
// -----------------------------------------------------


var queue = {};

// TODO: disable/enable undo and redo buttons appropriately

/**
 * Add an item to the undoQueue for a graphDiv
 *
 * @param gd
 * @param undoFunc Function undo this operation
 * @param undoArgs Args to supply undoFunc with
 * @param redoFunc Function to redo this operation
 * @param redoArgs Args to supply redoFunc with
 */
queue.add = function(gd, undoFunc, undoArgs, redoFunc, redoArgs) {
    var queueObj,
        queueIndex;

    // make sure we have the queue and our position in it
    gd.undoQueue = gd.undoQueue || {index: 0, queue: [], sequence: false};
    queueIndex = gd.undoQueue.index;

    // if we're already playing an undo or redo, or if this is an auto operation
    // (like pane resize... any others?) then we don't save this to the undo queue
    if(gd.autoplay) {
        if(!gd.undoQueue.inSequence) gd.autoplay = false;
        return;
    }

    // if we're not in a sequence or are just starting, we need a new queue item
    if(!gd.undoQueue.sequence || gd.undoQueue.beginSequence) {
        queueObj = {undo: {calls: [], args: []}, redo: {calls: [], args: []}};
        gd.undoQueue.queue.splice(queueIndex, gd.undoQueue.queue.length - queueIndex, queueObj);
        gd.undoQueue.index += 1;
    } else {
        queueObj = gd.undoQueue.queue[queueIndex - 1];
    }
    gd.undoQueue.beginSequence = false;

    // we unshift to handle calls for undo in a forward for loop later
    if(queueObj) {
        queueObj.undo.calls.unshift(undoFunc);
        queueObj.undo.args.unshift(undoArgs);
        queueObj.redo.calls.push(redoFunc);
        queueObj.redo.args.push(redoArgs);
    }

    if(gd.undoQueue.queue.length > config.queueLength) {
        gd.undoQueue.queue.shift();
        gd.undoQueue.index--;
    }
};

/**
 * Begin a sequence of undoQueue changes
 *
 * @param gd
 */
queue.startSequence = function(gd) {
    gd.undoQueue = gd.undoQueue || {index: 0, queue: [], sequence: false};
    gd.undoQueue.sequence = true;
    gd.undoQueue.beginSequence = true;
};

/**
 * Stop a sequence of undoQueue changes
 *
 * Call this *after* you're sure your undo chain has ended
 *
 * @param gd
 */
queue.stopSequence = function(gd) {
    gd.undoQueue = gd.undoQueue || {index: 0, queue: [], sequence: false};
    gd.undoQueue.sequence = false;
    gd.undoQueue.beginSequence = false;
};

/**
 * Move one step back in the undo queue, and undo the object there.
 *
 * @param gd
 */
queue.undo = function undo(gd) {
    var queueObj, i;

    if(gd.framework && gd.framework.isPolar) {
        gd.framework.undo();
        return;
    }
    if(gd.undoQueue === undefined ||
            isNaN(gd.undoQueue.index) ||
            gd.undoQueue.index <= 0) {
        return;
    }

    // index is pointing to next *forward* queueObj, point to the one we're undoing
    gd.undoQueue.index--;

    // get the queueObj for instructions on how to undo
    queueObj = gd.undoQueue.queue[gd.undoQueue.index];

    // this sequence keeps things from adding to the queue during undo/redo
    gd.undoQueue.inSequence = true;
    for(i = 0; i < queueObj.undo.calls.length; i++) {
        queue.plotDo(gd, queueObj.undo.calls[i], queueObj.undo.args[i]);
    }
    gd.undoQueue.inSequence = false;
    gd.autoplay = false;
};

/**
 * Redo the current object in the undo, then move forward in the queue.
 *
 * @param gd
 */
queue.redo = function redo(gd) {
    var queueObj, i;

    if(gd.framework && gd.framework.isPolar) {
        gd.framework.redo();
        return;
    }
    if(gd.undoQueue === undefined ||
            isNaN(gd.undoQueue.index) ||
            gd.undoQueue.index >= gd.undoQueue.queue.length) {
        return;
    }

    // get the queueObj for instructions on how to undo
    queueObj = gd.undoQueue.queue[gd.undoQueue.index];

    // this sequence keeps things from adding to the queue during undo/redo
    gd.undoQueue.inSequence = true;
    for(i = 0; i < queueObj.redo.calls.length; i++) {
        queue.plotDo(gd, queueObj.redo.calls[i], queueObj.redo.args[i]);
    }
    gd.undoQueue.inSequence = false;
    gd.autoplay = false;

    // index is pointing to the thing we just redid, move it
    gd.undoQueue.index++;
};

/**
 * Called by undo/redo to make the actual changes.
 *
 * Not meant to be called publically, but included for mocking out in tests.
 *
 * @param gd
 * @param func
 * @param args
 */
queue.plotDo = function(gd, func, args) {
    gd.autoplay = true;

    // this *won't* copy gd and it preserves `undefined` properties!
    args = copyArgArray(gd, args);

    // call the supplied function
    func.apply(null, args);
};

module.exports = queue;

},{"../lib":610,"../plot_api/plot_config":630}],620:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var loggers = require('./loggers');


/**
 * findBin - find the bin for val - note that it can return outside the
 * bin range any pos. or neg. integer for linear bins, or -1 or
 * bins.length-1 for explicit.
 * bins is either an object {start,size,end} or an array length #bins+1
 * bins can be either increasing or decreasing but must be monotonic
 * for linear bins, we can just calculate. For listed bins, run a binary
 * search linelow (truthy) says the bin boundary should be attributed to
 * the lower bin rather than the default upper bin
 */
exports.findBin = function(val, bins, linelow) {
    if(isNumeric(bins.start)) {
        return linelow ?
            Math.ceil((val - bins.start) / bins.size) - 1 :
            Math.floor((val - bins.start) / bins.size);
    }
    else {
        var n1 = 0,
            n2 = bins.length,
            c = 0,
            n,
            test;
        if(bins[bins.length - 1] >= bins[0]) {
            test = linelow ? lessThan : lessOrEqual;
        } else {
            test = linelow ? greaterOrEqual : greaterThan;
        }
        // c is just to avoid infinite loops if there's an error
        while(n1 < n2 && c++ < 100) {
            n = Math.floor((n1 + n2) / 2);
            if(test(bins[n], val)) n1 = n + 1;
            else n2 = n;
        }
        if(c > 90) loggers.log('Long binary search...');
        return n1 - 1;
    }
};

function lessThan(a, b) { return a < b; }
function lessOrEqual(a, b) { return a <= b; }
function greaterThan(a, b) { return a > b; }
function greaterOrEqual(a, b) { return a >= b; }

exports.sorterAsc = function(a, b) { return a - b; };
exports.sorterDes = function(a, b) { return b - a; };

/**
 * find distinct values in an array, lumping together ones that appear to
 * just be off by a rounding error
 * return the distinct values and the minimum difference between any two
 */
exports.distinctVals = function(valsIn) {
    var vals = valsIn.slice();  // otherwise we sort the original array...
    vals.sort(exports.sorterAsc);

    var l = vals.length - 1,
        minDiff = (vals[l] - vals[0]) || 1,
        errDiff = minDiff / (l || 1) / 10000,
        v2 = [vals[0]];

    for(var i = 0; i < l; i++) {
        // make sure values aren't just off by a rounding error
        if(vals[i + 1] > vals[i] + errDiff) {
            minDiff = Math.min(minDiff, vals[i + 1] - vals[i]);
            v2.push(vals[i + 1]);
        }
    }

    return {vals: v2, minDiff: minDiff};
};

/**
 * return the smallest element from (sorted) array arrayIn that's bigger than val,
 * or (reverse) the largest element smaller than val
 * used to find the best tick given the minimum (non-rounded) tick
 * particularly useful for date/time where things are not powers of 10
 * binary search is probably overkill here...
 */
exports.roundUp = function(val, arrayIn, reverse) {
    var low = 0,
        high = arrayIn.length - 1,
        mid,
        c = 0,
        dlow = reverse ? 0 : 1,
        dhigh = reverse ? 1 : 0,
        rounded = reverse ? Math.ceil : Math.floor;
    // c is just to avoid infinite loops if there's an error
    while(low < high && c++ < 100) {
        mid = rounded((low + high) / 2);
        if(arrayIn[mid] <= val) low = mid + dlow;
        else high = mid - dhigh;
    }
    return arrayIn[low];
};

},{"./loggers":613,"fast-isnumeric":97}],621:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

// works with our CSS cursor classes (see css/_cursor.scss)
// to apply cursors to d3 single-element selections.
// omit cursor to revert to the default.
module.exports = function setCursor(el3, csr) {
    (el3.attr('class') || '').split(' ').forEach(function(cls) {
        if(cls.indexOf('cursor-') === 0) el3.classed(cls, false);
    });

    if(csr) el3.classed('cursor-' + csr, true);
};

},{}],622:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../components/color');

var noop = function() {};


/**
 * Prints a no webgl error message into the scene container
 * @param {scene instance} scene
 *
 * Expects 'scene' to have property 'container'
 *
 */
module.exports = function showWebGlMsg(scene) {
    for(var prop in scene) {
        if(typeof scene[prop] === 'function') scene[prop] = noop;
    }

    scene.destroy = function() {
        scene.container.parentNode.removeChild(scene.container);
    };

    var div = document.createElement('div');
    div.textContent = 'Webgl is not supported by your browser - visit http://get.webgl.org for more info';
    div.style.cursor = 'pointer';
    div.style.fontSize = '24px';
    div.style.color = Color.defaults[0];

    scene.container.appendChild(div);
    scene.container.style.background = '#FFFFFF';
    scene.container.onclick = function() {
        window.open('http://get.webgl.org');
    };

    // return before setting up camera and onrender methods
    return false;
};

},{"../components/color":510}],623:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');


/**
 * aggNums() returns the result of an aggregate function applied to an array of
 * values, where non-numerical values have been tossed out.
 *
 * @param {function} f - aggregation function (e.g., Math.min)
 * @param {Number} v - initial value (continuing from previous calls)
 *      if there's no continuing value, use null for selector-type
 *      functions (max,min), or 0 for summations
 * @param {Array} a - array to aggregate (may be nested, we will recurse,
 *                    but all elements must have the same dimension)
 * @param {Number} len - maximum length of a to aggregate
 * @return {Number} - result of f applied to a starting from v
 */
exports.aggNums = function(f, v, a, len) {
    var i,
        b;
    if(!len) len = a.length;
    if(!isNumeric(v)) v = false;
    if(Array.isArray(a[0])) {
        b = new Array(len);
        for(i = 0; i < len; i++) b[i] = exports.aggNums(f, v, a[i]);
        a = b;
    }

    for(i = 0; i < len; i++) {
        if(!isNumeric(v)) v = a[i];
        else if(isNumeric(a[i])) v = f(+v, +a[i]);
    }
    return v;
};

/**
 * mean & std dev functions using aggNums, so it handles non-numerics nicely
 * even need to use aggNums instead of .length, to toss out non-numerics
 */
exports.len = function(data) {
    return exports.aggNums(function(a) { return a + 1; }, 0, data);
};

exports.mean = function(data, len) {
    if(!len) len = exports.len(data);
    return exports.aggNums(function(a, b) { return a + b; }, 0, data) / len;
};

exports.variance = function(data, len, mean) {
    if(!len) len = exports.len(data);
    if(!isNumeric(mean)) mean = exports.mean(data, len);

    return exports.aggNums(function(a, b) {
        return a + Math.pow(b - mean, 2);
    }, 0, data) / len;
};

exports.stdev = function(data, len, mean) {
    return Math.sqrt(exports.variance(data, len, mean));
};

/**
 * interp() computes a percentile (quantile) for a given distribution.
 * We interpolate the distribution (to compute quantiles, we follow method #10 here:
 * http://www.amstat.org/publications/jse/v14n3/langford.html).
 * Typically the index or rank (n * arr.length) may be non-integer.
 * For reference: ends are clipped to the extreme values in the array;
 * For box plots: index you get is half a point too high (see
 * http://en.wikipedia.org/wiki/Percentile#Nearest_rank) but note that this definition
 * indexes from 1 rather than 0, so we subtract 1/2 (instead of add).
 *
 * @param {Array} arr - This array contains the values that make up the distribution.
 * @param {Number} n - Between 0 and 1, n = p/100 is such that we compute the p^th percentile.
 * For example, the 50th percentile (or median) corresponds to n = 0.5
 * @return {Number} - percentile
 */
exports.interp = function(arr, n) {
    if(!isNumeric(n)) throw 'n should be a finite number';
    n = n * arr.length - 0.5;
    if(n < 0) return arr[0];
    if(n > arr.length - 1) return arr[arr.length - 1];
    var frac = n % 1;
    return frac * arr[Math.ceil(n)] + (1 - frac) * arr[Math.floor(n)];
};

},{"fast-isnumeric":97}],624:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');
var arrtools = require('arraytools');

function str2RgbaArray(color) {
    color = tinycolor(color);
    return arrtools.str2RgbaArray(color.toRgbString());
}

module.exports = str2RgbaArray;

},{"arraytools":8,"tinycolor2":985}],625:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/* global MathJax:false */

var d3 = require('d3');

var Lib = require('../lib');
var xmlnsNamespaces = require('../constants/xmlns_namespaces');
var stringMappings = require('../constants/string_mappings');

// Append SVG

d3.selection.prototype.appendSVG = function(_svgString) {
    var skeleton = [
        '<svg xmlns="', xmlnsNamespaces.svg, '" ',
        'xmlns:xlink="', xmlnsNamespaces.xlink, '">',
        _svgString,
        '</svg>'
    ].join('');

    var dom = new DOMParser().parseFromString(skeleton, 'application/xml'),
        childNode = dom.documentElement.firstChild;

    while(childNode) {
        this.node().appendChild(this.node().ownerDocument.importNode(childNode, true));
        childNode = childNode.nextSibling;
    }
    if(dom.querySelector('parsererror')) {
        Lib.log(dom.querySelector('parsererror div').textContent);
        return null;
    }
    return d3.select(this.node().lastChild);
};

// Text utilities

exports.html_entity_decode = function(s) {
    var hiddenDiv = d3.select('body').append('div').style({display: 'none'}).html('');
    var replaced = s.replace(/(&[^;]*;)/gi, function(d) {
        if(d === '&lt;') { return '&#60;'; } // special handling for brackets
        if(d === '&rt;') { return '&#62;'; }
        return hiddenDiv.html(d).text(); // everything else, let the browser decode it to unicode
    });
    hiddenDiv.remove();
    return replaced;
};

exports.xml_entity_encode = function(str) {
    return str.replace(/&(?!\w+;|\#[0-9]+;| \#x[0-9A-F]+;)/g, '&amp;');
};

// text converter

function getSize(_selection, _dimension) {
    return _selection.node().getBoundingClientRect()[_dimension];
}

exports.convertToTspans = function(_context, _callback) {
    var str = _context.text();
    var converted = convertToSVG(str);
    var that = _context;

    // Until we get tex integrated more fully (so it can be used along with non-tex)
    // allow some elements to prohibit it by attaching 'data-notex' to the original
    var tex = (!that.attr('data-notex')) && converted.match(/([^$]*)([$]+[^$]*[$]+)([^$]*)/);
    var result = str;
    var parent = d3.select(that.node().parentNode);
    if(parent.empty()) return;
    var svgClass = (that.attr('class')) ? that.attr('class').split(' ')[0] : 'text';
    svgClass += '-math';
    parent.selectAll('svg.' + svgClass).remove();
    parent.selectAll('g.' + svgClass + '-group').remove();
    _context.style({visibility: null});
    for(var up = _context.node(); up && up.removeAttribute; up = up.parentNode) {
        up.removeAttribute('data-bb');
    }

    function showText() {
        if(!parent.empty()) {
            svgClass = that.attr('class') + '-math';
            parent.select('svg.' + svgClass).remove();
        }
        _context.text('')
            .style({
                visibility: 'inherit',
                'white-space': 'pre'
            });

        result = _context.appendSVG(converted);

        if(!result) _context.text(str);

        if(_context.select('a').size()) {
            // at least in Chrome, pointer-events does not seem
            // to be honored in children of <text> elements
            // so if we have an anchor, we have to make the
            // whole element respond
            _context.style('pointer-events', 'all');
        }

        if(_callback) _callback.call(that);
    }

    if(tex) {
        var gd = Lib.getPlotDiv(that.node());
        ((gd && gd._promises) || []).push(new Promise(function(resolve) {
            that.style({visibility: 'hidden'});
            var config = {fontSize: parseInt(that.style('font-size'), 10)};

            texToSVG(tex[2], config, function(_svgEl, _glyphDefs, _svgBBox) {
                parent.selectAll('svg.' + svgClass).remove();
                parent.selectAll('g.' + svgClass + '-group').remove();

                var newSvg = _svgEl && _svgEl.select('svg');
                if(!newSvg || !newSvg.node()) {
                    showText();
                    resolve();
                    return;
                }

                var mathjaxGroup = parent.append('g')
                    .classed(svgClass + '-group', true)
                    .attr({'pointer-events': 'none'});

                mathjaxGroup.node().appendChild(newSvg.node());

                // stitch the glyph defs
                if(_glyphDefs && _glyphDefs.node()) {
                    newSvg.node().insertBefore(_glyphDefs.node().cloneNode(true),
                                               newSvg.node().firstChild);
                }

                newSvg.attr({
                    'class': svgClass,
                    height: _svgBBox.height,
                    preserveAspectRatio: 'xMinYMin meet'
                })
                .style({overflow: 'visible', 'pointer-events': 'none'});

                var fill = that.style('fill') || 'black';
                newSvg.select('g').attr({fill: fill, stroke: fill});

                var newSvgW = getSize(newSvg, 'width'),
                    newSvgH = getSize(newSvg, 'height'),
                    newX = +that.attr('x') - newSvgW *
                        {start: 0, middle: 0.5, end: 1}[that.attr('text-anchor') || 'start'],
                    // font baseline is about 1/4 fontSize below centerline
                    textHeight = parseInt(that.style('font-size'), 10) ||
                        getSize(that, 'height'),
                    dy = -textHeight / 4;

                if(svgClass[0] === 'y') {
                    mathjaxGroup.attr({
                        transform: 'rotate(' + [-90, +that.attr('x'), +that.attr('y')] +
                        ') translate(' + [-newSvgW / 2, dy - newSvgH / 2] + ')'
                    });
                    newSvg.attr({x: +that.attr('x'), y: +that.attr('y')});
                }
                else if(svgClass[0] === 'l') {
                    newSvg.attr({x: that.attr('x'), y: dy - (newSvgH / 2)});
                }
                else if(svgClass[0] === 'a') {
                    newSvg.attr({x: 0, y: dy});
                }
                else {
                    newSvg.attr({x: newX, y: (+that.attr('y') + dy - newSvgH / 2)});
                }

                if(_callback) _callback.call(that, mathjaxGroup);
                resolve(mathjaxGroup);
            });
        }));
    }
    else showText();

    return _context;
};


// MathJax

function cleanEscapesForTex(s) {
    return s.replace(/(<|&lt;|&#60;)/g, '\\lt ')
        .replace(/(>|&gt;|&#62;)/g, '\\gt ');
}

function texToSVG(_texString, _config, _callback) {
    var randomID = 'math-output-' + Lib.randstr([], 64);
    var tmpDiv = d3.select('body').append('div')
        .attr({id: randomID})
        .style({visibility: 'hidden', position: 'absolute'})
        .style({'font-size': _config.fontSize + 'px'})
        .text(cleanEscapesForTex(_texString));

    MathJax.Hub.Queue(['Typeset', MathJax.Hub, tmpDiv.node()], function() {
        var glyphDefs = d3.select('body').select('#MathJax_SVG_glyphs');

        if(tmpDiv.select('.MathJax_SVG').empty() || !tmpDiv.select('svg').node()) {
            Lib.log('There was an error in the tex syntax.', _texString);
            _callback();
        }
        else {
            var svgBBox = tmpDiv.select('svg').node().getBoundingClientRect();
            _callback(tmpDiv.select('.MathJax_SVG'), glyphDefs, svgBBox);
        }

        tmpDiv.remove();
    });
}

var TAG_STYLES = {
    // would like to use baseline-shift but FF doesn't support it yet
    // so we need to use dy along with the uber hacky shift-back-to
    // baseline below
    sup: 'font-size:70%" dy="-0.6em',
    sub: 'font-size:70%" dy="0.3em',
    b: 'font-weight:bold',
    i: 'font-style:italic',
    a: '',
    span: '',
    br: '',
    em: 'font-style:italic;font-weight:bold'
};

var PROTOCOLS = ['http:', 'https:', 'mailto:'];

var STRIP_TAGS = new RegExp('</?(' + Object.keys(TAG_STYLES).join('|') + ')( [^>]*)?/?>', 'g');

var ENTITY_TO_UNICODE = Object.keys(stringMappings.entityToUnicode).map(function(k) {
    return {
        regExp: new RegExp('&' + k + ';', 'g'),
        sub: stringMappings.entityToUnicode[k]
    };
});

var UNICODE_TO_ENTITY = Object.keys(stringMappings.unicodeToEntity).map(function(k) {
    return {
        regExp: new RegExp(k, 'g'),
        sub: '&' + stringMappings.unicodeToEntity[k] + ';'
    };
});

exports.plainText = function(_str) {
    // strip out our pseudo-html so we have a readable
    // version to put into text fields
    return (_str || '').replace(STRIP_TAGS, ' ');
};

function replaceFromMapObject(_str, list) {
    var out = _str || '';

    for(var i = 0; i < list.length; i++) {
        var item = list[i];
        out = out.replace(item.regExp, item.sub);
    }

    return out;
}

function convertEntities(_str) {
    return replaceFromMapObject(_str, ENTITY_TO_UNICODE);
}

function encodeForHTML(_str) {
    return replaceFromMapObject(_str, UNICODE_TO_ENTITY);
}

function convertToSVG(_str) {
    _str = convertEntities(_str);

    var result = _str
        .split(/(<[^<>]*>)/).map(function(d) {
            var match = d.match(/<(\/?)([^ >]*)\s*(.*)>/i),
                tag = match && match[2].toLowerCase(),
                style = TAG_STYLES[tag];

            if(style !== undefined) {
                var close = match[1],
                    extra = match[3],
                    /**
                     * extraStyle: any random extra css (that's supported by svg)
                     * use this like <span style="font-family:Arial"> to change font in the middle
                     *
                     * at one point we supported <font family="..." size="..."> but as this isn't even
                     * valid HTML anymore and we dropped it accidentally for many months, we will not
                     * resurrect it.
                     */
                    extraStyle = extra.match(/^style\s*=\s*"([^"]+)"\s*/i);

                // anchor and br are the only ones that don't turn into a tspan
                if(tag === 'a') {
                    if(close) return '</a>';
                    else if(extra.substr(0, 4).toLowerCase() !== 'href') return '<a>';
                    else {
                        // remove quotes, leading '=', replace '&' with '&amp;'
                        var href = extra.substr(4)
                            .replace(/["']/g, '')
                            .replace(/=/, '');

                        // check protocol
                        var dummyAnchor = document.createElement('a');
                        dummyAnchor.href = href;
                        if(PROTOCOLS.indexOf(dummyAnchor.protocol) === -1) return '<a>';

                        return '<a xlink:show="new" xlink:href="' + encodeForHTML(href) + '">';
                    }
                }
                else if(tag === 'br') return '<br>';
                else if(close) {
                    // closing tag

                    // sub/sup: extra tspan with zero-width space to get back to the right baseline
                    if(tag === 'sup') return '</tspan><tspan dy="0.42em">&#x200b;</tspan>';
                    if(tag === 'sub') return '</tspan><tspan dy="-0.21em">&#x200b;</tspan>';
                    else return '</tspan>';
                }
                else {
                    var tspanStart = '<tspan';

                    if(tag === 'sup' || tag === 'sub') {
                        // sub/sup: extra zero-width space, fixes problem if new line starts with sub/sup
                        tspanStart = '&#x200b;' + tspanStart;
                    }

                    if(extraStyle) {
                        // most of the svg css users will care about is just like html,
                        // but font color is different. Let our users ignore this.
                        extraStyle = extraStyle[1].replace(/(^|;)\s*color:/, '$1 fill:');
                        style = (style ? style + ';' : '') + encodeForHTML(extraStyle);
                    }

                    return tspanStart + (style ? ' style="' + style + '"' : '') + '>';
                }
            }
            else {
                return exports.xml_entity_encode(d).replace(/</g, '&lt;');
            }
        });

    var indices = [];
    for(var index = result.indexOf('<br>'); index > 0; index = result.indexOf('<br>', index + 1)) {
        indices.push(index);
    }
    var count = 0;
    indices.forEach(function(d) {
        var brIndex = d + count;
        var search = result.slice(0, brIndex);
        var previousOpenTag = '';
        for(var i2 = search.length - 1; i2 >= 0; i2--) {
            var isTag = search[i2].match(/<(\/?).*>/i);
            if(isTag && search[i2] !== '<br>') {
                if(!isTag[1]) previousOpenTag = search[i2];
                break;
            }
        }
        if(previousOpenTag) {
            result.splice(brIndex + 1, 0, previousOpenTag);
            result.splice(brIndex, 0, '</tspan>');
            count += 2;
        }
    });

    var joined = result.join('');
    var splitted = joined.split(/<br>/gi);
    if(splitted.length > 1) {
        result = splitted.map(function(d, i) {
            // TODO: figure out max font size of this line and alter dy
            // this requires either:
            // 1) bringing the base font size into convertToTspans, or
            // 2) only allowing relative percentage font sizes.
            // I think #2 is the way to go
            return '<tspan class="line" dy="' + (i * 1.3) + 'em">' + d + '</tspan>';
        });
    }

    return result.join('');
}

function alignHTMLWith(_base, container, options) {
    var alignH = options.horizontalAlign,
        alignV = options.verticalAlign || 'top',
        bRect = _base.node().getBoundingClientRect(),
        cRect = container.node().getBoundingClientRect(),
        thisRect,
        getTop,
        getLeft;

    if(alignV === 'bottom') {
        getTop = function() { return bRect.bottom - thisRect.height; };
    } else if(alignV === 'middle') {
        getTop = function() { return bRect.top + (bRect.height - thisRect.height) / 2; };
    } else { // default: top
        getTop = function() { return bRect.top; };
    }

    if(alignH === 'right') {
        getLeft = function() { return bRect.right - thisRect.width; };
    } else if(alignH === 'center') {
        getLeft = function() { return bRect.left + (bRect.width - thisRect.width) / 2; };
    } else { // default: left
        getLeft = function() { return bRect.left; };
    }

    return function() {
        thisRect = this.node().getBoundingClientRect();
        this.style({
            top: (getTop() - cRect.top) + 'px',
            left: (getLeft() - cRect.left) + 'px',
            'z-index': 1000
        });
        return this;
    };
}

// Editable title

exports.makeEditable = function(context, _delegate, options) {
    if(!options) options = {};
    var that = this;
    var dispatch = d3.dispatch('edit', 'input', 'cancel');
    var textSelection = d3.select(this.node())
        .style({'pointer-events': 'all'});

    var handlerElement = _delegate || textSelection;
    if(_delegate) textSelection.style({'pointer-events': 'none'});

    function handleClick() {
        appendEditable();
        that.style({opacity: 0});
        // also hide any mathjax svg
        var svgClass = handlerElement.attr('class'),
            mathjaxClass;
        if(svgClass) mathjaxClass = '.' + svgClass.split(' ')[0] + '-math-group';
        else mathjaxClass = '[class*=-math-group]';
        if(mathjaxClass) {
            d3.select(that.node().parentNode).select(mathjaxClass).style({opacity: 0});
        }
    }

    function selectElementContents(_el) {
        var el = _el.node();
        var range = document.createRange();
        range.selectNodeContents(el);
        var sel = window.getSelection();
        sel.removeAllRanges();
        sel.addRange(range);
        el.focus();
    }

    function appendEditable() {
        var plotDiv = d3.select(Lib.getPlotDiv(that.node())),
            container = plotDiv.select('.svg-container'),
            div = container.append('div');
        div.classed('plugin-editable editable', true)
            .style({
                position: 'absolute',
                'font-family': that.style('font-family') || 'Arial',
                'font-size': that.style('font-size') || 12,
                color: options.fill || that.style('fill') || 'black',
                opacity: 1,
                'background-color': options.background || 'transparent',
                outline: '#ffffff33 1px solid',
                margin: [-parseFloat(that.style('font-size')) / 8 + 1, 0, 0, -1].join('px ') + 'px',
                padding: '0',
                'box-sizing': 'border-box'
            })
            .attr({contenteditable: true})
            .text(options.text || that.attr('data-unformatted'))
            .call(alignHTMLWith(that, container, options))
            .on('blur', function() {
                that.text(this.textContent)
                    .style({opacity: 1});
                var svgClass = d3.select(this).attr('class'),
                    mathjaxClass;
                if(svgClass) mathjaxClass = '.' + svgClass.split(' ')[0] + '-math-group';
                else mathjaxClass = '[class*=-math-group]';
                if(mathjaxClass) {
                    d3.select(that.node().parentNode).select(mathjaxClass).style({opacity: 0});
                }
                var text = this.textContent;
                d3.select(this).transition().duration(0).remove();
                d3.select(document).on('mouseup', null);
                dispatch.edit.call(that, text);
            })
            .on('focus', function() {
                var context = this;
                d3.select(document).on('mouseup', function() {
                    if(d3.event.target === context) return false;
                    if(document.activeElement === div.node()) div.node().blur();
                });
            })
            .on('keyup', function() {
                if(d3.event.which === 27) {
                    that.style({opacity: 1});
                    d3.select(this)
                        .style({opacity: 0})
                        .on('blur', function() { return false; })
                        .transition().remove();
                    dispatch.cancel.call(that, this.textContent);
                }
                else {
                    dispatch.input.call(that, this.textContent);
                    d3.select(this).call(alignHTMLWith(that, container, options));
                }
            })
            .on('keydown', function() {
                if(d3.event.which === 13) this.blur();
            })
            .call(selectElementContents);
    }

    if(options.immediate) handleClick();
    else handlerElement.on('click', handleClick);

    return d3.rebind(this, dispatch, 'on');
};

},{"../constants/string_mappings":594,"../constants/xmlns_namespaces":595,"../lib":610,"d3":86}],626:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var topojsonUtils = module.exports = {};

var locationmodeToLayer = require('../plots/geo/constants').locationmodeToLayer;
var topojsonFeature = require('topojson-client').feature;


topojsonUtils.getTopojsonName = function(geoLayout) {
    return [
        geoLayout.scope.replace(/ /g, '-'), '_',
        geoLayout.resolution.toString(), 'm'
    ].join('');
};

topojsonUtils.getTopojsonPath = function(topojsonURL, topojsonName) {
    return topojsonURL + topojsonName + '.json';
};

topojsonUtils.getTopojsonFeatures = function(trace, topojson) {
    var layer = locationmodeToLayer[trace.locationmode],
        obj = topojson.objects[layer];

    return topojsonFeature(topojson, obj).features;
};

},{"../plots/geo/constants":664,"topojson-client":987}],627:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

function truncateFloat32(arrayIn, len) {
    var arrayOut = new Float32Array(len);
    for(var i = 0; i < len; i++) arrayOut[i] = arrayIn[i];
    return arrayOut;
}

function truncateFloat64(arrayIn, len) {
    var arrayOut = new Float64Array(len);
    for(var i = 0; i < len; i++) arrayOut[i] = arrayIn[i];
    return arrayOut;
}

/**
 * Truncate a typed array to some length.
 * For some reason, ES2015 Float32Array.prototype.slice takes
 * 2x as long, therefore we aren't checking for its existence
 */
module.exports = function truncate(arrayIn, len) {
    if(arrayIn instanceof Float32Array) return truncateFloat32(arrayIn, len);
    if(arrayIn instanceof Float64Array) return truncateFloat64(arrayIn, len);
    throw new Error('This array type is not yet supported by `truncate`.');
};

},{}],628:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var m4FromQuat = require('gl-mat4/fromQuat');

var Registry = require('../registry');
var Lib = require('../lib');
var Plots = require('../plots/plots');
var Axes = require('../plots/cartesian/axes');
var Color = require('../components/color');


// Get the container div: we store all variables for this plot as
// properties of this div
// some callers send this in by DOM element, others by id (string)
exports.getGraphDiv = function(gd) {
    var gdElement;

    if(typeof gd === 'string') {
        gdElement = document.getElementById(gd);

        if(gdElement === null) {
            throw new Error('No DOM element with id \'' + gd + '\' exists on the page.');
        }

        return gdElement;
    }
    else if(gd === null || gd === undefined) {
        throw new Error('DOM element provided is null or undefined');
    }

    return gd;  // otherwise assume that gd is a DOM element
};

// clear the promise queue if one of them got rejected
exports.clearPromiseQueue = function(gd) {
    if(Array.isArray(gd._promises) && gd._promises.length > 0) {
        Lib.log('Clearing previous rejected promises from queue.');
    }

    gd._promises = [];
};

// make a few changes to the layout right away
// before it gets used for anything
// backward compatibility and cleanup of nonstandard options
exports.cleanLayout = function(layout) {
    var i, j;

    if(!layout) layout = {};

    // cannot have (x|y)axis1, numbering goes axis, axis2, axis3...
    if(layout.xaxis1) {
        if(!layout.xaxis) layout.xaxis = layout.xaxis1;
        delete layout.xaxis1;
    }
    if(layout.yaxis1) {
        if(!layout.yaxis) layout.yaxis = layout.yaxis1;
        delete layout.yaxis1;
    }

    var axList = Axes.list({_fullLayout: layout});
    for(i = 0; i < axList.length; i++) {
        var ax = axList[i];
        if(ax.anchor && ax.anchor !== 'free') {
            ax.anchor = Axes.cleanId(ax.anchor);
        }
        if(ax.overlaying) ax.overlaying = Axes.cleanId(ax.overlaying);

        // old method of axis type - isdate and islog (before category existed)
        if(!ax.type) {
            if(ax.isdate) ax.type = 'date';
            else if(ax.islog) ax.type = 'log';
            else if(ax.isdate === false && ax.islog === false) ax.type = 'linear';
        }
        if(ax.autorange === 'withzero' || ax.autorange === 'tozero') {
            ax.autorange = true;
            ax.rangemode = 'tozero';
        }
        delete ax.islog;
        delete ax.isdate;
        delete ax.categories; // replaced by _categories

        // prune empty domain arrays made before the new nestedProperty
        if(emptyContainer(ax, 'domain')) delete ax.domain;

        // autotick -> tickmode
        if(ax.autotick !== undefined) {
            if(ax.tickmode === undefined) {
                ax.tickmode = ax.autotick ? 'auto' : 'linear';
            }
            delete ax.autotick;
        }
    }

    var annotationsLen = Array.isArray(layout.annotations) ? layout.annotations.length : 0;
    for(i = 0; i < annotationsLen; i++) {
        var ann = layout.annotations[i];

        if(!Lib.isPlainObject(ann)) continue;

        if(ann.ref) {
            if(ann.ref === 'paper') {
                ann.xref = 'paper';
                ann.yref = 'paper';
            }
            else if(ann.ref === 'data') {
                ann.xref = 'x';
                ann.yref = 'y';
            }
            delete ann.ref;
        }

        cleanAxRef(ann, 'xref');
        cleanAxRef(ann, 'yref');
    }

    var shapesLen = Array.isArray(layout.shapes) ? layout.shapes.length : 0;
    for(i = 0; i < shapesLen; i++) {
        var shape = layout.shapes[i];

        if(!Lib.isPlainObject(shape)) continue;

        cleanAxRef(shape, 'xref');
        cleanAxRef(shape, 'yref');
    }

    var legend = layout.legend;
    if(legend) {
        // check for old-style legend positioning (x or y is +/- 100)
        if(legend.x > 3) {
            legend.x = 1.02;
            legend.xanchor = 'left';
        }
        else if(legend.x < -2) {
            legend.x = -0.02;
            legend.xanchor = 'right';
        }

        if(legend.y > 3) {
            legend.y = 1.02;
            legend.yanchor = 'bottom';
        }
        else if(legend.y < -2) {
            legend.y = -0.02;
            legend.yanchor = 'top';
        }
    }

    /*
     * Moved from rotate -> orbit for dragmode
     */
    if(layout.dragmode === 'rotate') layout.dragmode = 'orbit';

    // cannot have scene1, numbering goes scene, scene2, scene3...
    if(layout.scene1) {
        if(!layout.scene) layout.scene = layout.scene1;
        delete layout.scene1;
    }

    /*
     * Clean up Scene layouts
     */
    var sceneIds = Plots.getSubplotIds(layout, 'gl3d');
    for(i = 0; i < sceneIds.length; i++) {
        var scene = layout[sceneIds[i]];

        // clean old Camera coords
        var cameraposition = scene.cameraposition;
        if(Array.isArray(cameraposition) && cameraposition[0].length === 4) {
            var rotation = cameraposition[0],
                center = cameraposition[1],
                radius = cameraposition[2],
                mat = m4FromQuat([], rotation),
                eye = [];

            for(j = 0; j < 3; ++j) {
                eye[j] = center[i] + radius * mat[2 + 4 * j];
            }

            scene.camera = {
                eye: {x: eye[0], y: eye[1], z: eye[2]},
                center: {x: center[0], y: center[1], z: center[2]},
                up: {x: mat[1], y: mat[5], z: mat[9]}
            };

            delete scene.cameraposition;
        }
    }

    // sanitize rgb(fractions) and rgba(fractions) that old tinycolor
    // supported, but new tinycolor does not because they're not valid css
    Color.clean(layout);

    return layout;
};

function cleanAxRef(container, attr) {
    var valIn = container[attr],
        axLetter = attr.charAt(0);
    if(valIn && valIn !== 'paper') {
        container[attr] = Axes.cleanId(valIn, axLetter);
    }
}

// Make a few changes to the data right away
// before it gets used for anything
exports.cleanData = function(data, existingData) {

    // Enforce unique IDs
    var suids = [], // seen uids --- so we can weed out incoming repeats
        uids = data.concat(Array.isArray(existingData) ? existingData : [])
               .filter(function(trace) { return 'uid' in trace; })
               .map(function(trace) { return trace.uid; });

    for(var tracei = 0; tracei < data.length; tracei++) {
        var trace = data[tracei];
        var i;

        // assign uids to each trace and detect collisions.
        if(!('uid' in trace) || suids.indexOf(trace.uid) !== -1) {
            var newUid;

            for(i = 0; i < 100; i++) {
                newUid = Lib.randstr(uids);
                if(suids.indexOf(newUid) === -1) break;
            }
            trace.uid = Lib.randstr(uids);
            uids.push(trace.uid);
        }
        // keep track of already seen uids, so that if there are
        // doubles we force the trace with a repeat uid to
        // acquire a new one
        suids.push(trace.uid);

        // BACKWARD COMPATIBILITY FIXES

        // use xbins to bin data in x, and ybins to bin data in y
        if(trace.type === 'histogramy' && 'xbins' in trace && !('ybins' in trace)) {
            trace.ybins = trace.xbins;
            delete trace.xbins;
        }

        // error_y.opacity is obsolete - merge into color
        if(trace.error_y && 'opacity' in trace.error_y) {
            var dc = Color.defaults,
                yeColor = trace.error_y.color ||
                (Registry.traceIs(trace, 'bar') ? Color.defaultLine : dc[tracei % dc.length]);
            trace.error_y.color = Color.addOpacity(
                Color.rgb(yeColor),
                Color.opacity(yeColor) * trace.error_y.opacity);
            delete trace.error_y.opacity;
        }

        // convert bardir to orientation, and put the data into
        // the axes it's eventually going to be used with
        if('bardir' in trace) {
            if(trace.bardir === 'h' && (Registry.traceIs(trace, 'bar') ||
                     trace.type.substr(0, 9) === 'histogram')) {
                trace.orientation = 'h';
                exports.swapXYData(trace);
            }
            delete trace.bardir;
        }

        // now we have only one 1D histogram type, and whether
        // it uses x or y data depends on trace.orientation
        if(trace.type === 'histogramy') exports.swapXYData(trace);
        if(trace.type === 'histogramx' || trace.type === 'histogramy') {
            trace.type = 'histogram';
        }

        // scl->scale, reversescl->reversescale
        if('scl' in trace) {
            trace.colorscale = trace.scl;
            delete trace.scl;
        }
        if('reversescl' in trace) {
            trace.reversescale = trace.reversescl;
            delete trace.reversescl;
        }

        // axis ids x1 -> x, y1-> y
        if(trace.xaxis) trace.xaxis = Axes.cleanId(trace.xaxis, 'x');
        if(trace.yaxis) trace.yaxis = Axes.cleanId(trace.yaxis, 'y');

        // scene ids scene1 -> scene
        if(Registry.traceIs(trace, 'gl3d') && trace.scene) {
            trace.scene = Plots.subplotsRegistry.gl3d.cleanId(trace.scene);
        }

        if(!Registry.traceIs(trace, 'pie') && !Registry.traceIs(trace, 'bar')) {
            if(Array.isArray(trace.textposition)) {
                trace.textposition = trace.textposition.map(cleanTextPosition);
            }
            else if(trace.textposition) {
                trace.textposition = cleanTextPosition(trace.textposition);
            }
        }

        // fix typo in colorscale definition
        if(Registry.traceIs(trace, '2dMap')) {
            if(trace.colorscale === 'YIGnBu') trace.colorscale = 'YlGnBu';
            if(trace.colorscale === 'YIOrRd') trace.colorscale = 'YlOrRd';
        }
        if(Registry.traceIs(trace, 'markerColorscale') && trace.marker) {
            var cont = trace.marker;
            if(cont.colorscale === 'YIGnBu') cont.colorscale = 'YlGnBu';
            if(cont.colorscale === 'YIOrRd') cont.colorscale = 'YlOrRd';
        }

        // fix typo in surface 'highlight*' definitions
        if(trace.type === 'surface' && Lib.isPlainObject(trace.contours)) {
            var dims = ['x', 'y', 'z'];

            for(i = 0; i < dims.length; i++) {
                var opts = trace.contours[dims[i]];

                if(!Lib.isPlainObject(opts)) continue;

                if(opts.highlightColor) {
                    opts.highlightcolor = opts.highlightColor;
                    delete opts.highlightColor;
                }

                if(opts.highlightWidth) {
                    opts.highlightwidth = opts.highlightWidth;
                    delete opts.highlightWidth;
                }
            }
        }

        // transforms backward compatibility fixes
        if(Array.isArray(trace.transforms)) {
            var transforms = trace.transforms;

            for(i = 0; i < transforms.length; i++) {
                var transform = transforms[i];

                if(!Lib.isPlainObject(transform)) continue;

                if(transform.type === 'filter') {
                    if(transform.filtersrc) {
                        transform.target = transform.filtersrc;
                        delete transform.filtersrc;
                    }

                    if(transform.calendar) {
                        if(!transform.valuecalendar) {
                            transform.valuecalendar = transform.calendar;
                        }
                        delete transform.calendar;
                    }
                }
            }
        }

        // prune empty containers made before the new nestedProperty
        if(emptyContainer(trace, 'line')) delete trace.line;
        if('marker' in trace) {
            if(emptyContainer(trace.marker, 'line')) delete trace.marker.line;
            if(emptyContainer(trace, 'marker')) delete trace.marker;
        }

        // sanitize rgb(fractions) and rgba(fractions) that old tinycolor
        // supported, but new tinycolor does not because they're not valid css
        Color.clean(trace);
    }
};

// textposition - support partial attributes (ie just 'top')
// and incorrect use of middle / center etc.
function cleanTextPosition(textposition) {
    var posY = 'middle',
        posX = 'center';
    if(textposition.indexOf('top') !== -1) posY = 'top';
    else if(textposition.indexOf('bottom') !== -1) posY = 'bottom';

    if(textposition.indexOf('left') !== -1) posX = 'left';
    else if(textposition.indexOf('right') !== -1) posX = 'right';

    return posY + ' ' + posX;
}

function emptyContainer(outer, innerStr) {
    return (innerStr in outer) &&
        (typeof outer[innerStr] === 'object') &&
        (Object.keys(outer[innerStr]).length === 0);
}


// swap all the data and data attributes associated with x and y
exports.swapXYData = function(trace) {
    var i;
    Lib.swapAttrs(trace, ['?', '?0', 'd?', '?bins', 'nbins?', 'autobin?', '?src', 'error_?']);
    if(Array.isArray(trace.z) && Array.isArray(trace.z[0])) {
        if(trace.transpose) delete trace.transpose;
        else trace.transpose = true;
    }
    if(trace.error_x && trace.error_y) {
        var errorY = trace.error_y,
            copyYstyle = ('copy_ystyle' in errorY) ? errorY.copy_ystyle :
                !(errorY.color || errorY.thickness || errorY.width);
        Lib.swapAttrs(trace, ['error_?.copy_ystyle']);
        if(copyYstyle) {
            Lib.swapAttrs(trace, ['error_?.color', 'error_?.thickness', 'error_?.width']);
        }
    }
    if(trace.hoverinfo) {
        var hoverInfoParts = trace.hoverinfo.split('+');
        for(i = 0; i < hoverInfoParts.length; i++) {
            if(hoverInfoParts[i] === 'x') hoverInfoParts[i] = 'y';
            else if(hoverInfoParts[i] === 'y') hoverInfoParts[i] = 'x';
        }
        trace.hoverinfo = hoverInfoParts.join('+');
    }
};

// coerce traceIndices input to array of trace indices
exports.coerceTraceIndices = function(gd, traceIndices) {
    if(isNumeric(traceIndices)) {
        return [traceIndices];
    }
    else if(!Array.isArray(traceIndices) || !traceIndices.length) {
        return gd.data.map(function(_, i) { return i; });
    }

    return traceIndices;
};

/**
 * Manages logic around array container item creation / deletion / update
 * that nested property along can't handle.
 *
 * @param {Object} np
 *  nested property of update attribute string about trace or layout object
 * @param {*} newVal
 *  update value passed to restyle / relayout / update
 * @param {Object} undoit
 *  undo hash (N.B. undoit may be mutated here).
 *
 */
exports.manageArrayContainers = function(np, newVal, undoit) {
    var obj = np.obj,
        parts = np.parts,
        pLength = parts.length,
        pLast = parts[pLength - 1];

    var pLastIsNumber = isNumeric(pLast);

    // delete item
    if(pLastIsNumber && newVal === null) {

        // Clear item in array container when new value is null
        var contPath = parts.slice(0, pLength - 1).join('.'),
            cont = Lib.nestedProperty(obj, contPath).get();
        cont.splice(pLast, 1);

        // Note that nested property clears null / undefined at end of
        // array container, but not within them.
    }
    // create item
    else if(pLastIsNumber && np.get() === undefined) {

        // When adding a new item, make sure undo command will remove it
        if(np.get() === undefined) undoit[np.astr] = null;

        np.set(newVal);
    }
    // update item
    else {

        // If the last part of attribute string isn't a number,
        // np.set is all we need.
        np.set(newVal);
    }
};

},{"../components/color":510,"../lib":610,"../plots/cartesian/axes":642,"../plots/plots":702,"../registry":717,"fast-isnumeric":97,"gl-mat4/fromQuat":153}],629:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Plotly = require('../plotly');
var Lib = require('../lib');
var Events = require('../lib/events');
var Queue = require('../lib/queue');

var Registry = require('../registry');
var Plots = require('../plots/plots');
var Fx = require('../plots/cartesian/graph_interact');
var Polar = require('../plots/polar');

var Drawing = require('../components/drawing');
var ErrorBars = require('../components/errorbars');
var xmlnsNamespaces = require('../constants/xmlns_namespaces');
var svgTextUtils = require('../lib/svg_text_utils');

var helpers = require('./helpers');
var subroutines = require('./subroutines');


/**
 * Main plot-creation function
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 * @param {array of objects} data
 *      array of traces, containing the data and display information for each trace
 * @param {object} layout
 *      object describing the overall display of the plot,
 *      all the stuff that doesn't pertain to any individual trace
 * @param {object} config
 *      configuration options (see ./plot_config.js for more info)
 *
 */
Plotly.plot = function(gd, data, layout, config) {
    var frames;

    gd = helpers.getGraphDiv(gd);

    // Events.init is idempotent and bails early if gd has already been init'd
    Events.init(gd);

    if(Lib.isPlainObject(data)) {
        var obj = data;
        data = obj.data;
        layout = obj.layout;
        config = obj.config;
        frames = obj.frames;
    }

    var okToPlot = Events.triggerHandler(gd, 'plotly_beforeplot', [data, layout, config]);
    if(okToPlot === false) return Promise.reject();

    // if there's no data or layout, and this isn't yet a plotly plot
    // container, log a warning to help plotly.js users debug
    if(!data && !layout && !Lib.isPlotDiv(gd)) {
        Lib.warn('Calling Plotly.plot as if redrawing ' +
            'but this container doesn\'t yet have a plot.', gd);
    }

    function addFrames() {
        if(frames) {
            return Plotly.addFrames(gd, frames);
        }
    }

    // transfer configuration options to gd until we move over to
    // a more OO like model
    setPlotContext(gd, config);

    if(!layout) layout = {};

    // hook class for plots main container (in case of plotly.js
    // this won't be #embedded-graph or .js-tab-contents)
    d3.select(gd).classed('js-plotly-plot', true);

    // off-screen getBoundingClientRect testing space,
    // in #js-plotly-tester (and stored as gd._tester)
    // so we can share cached text across tabs
    Drawing.makeTester(gd);

    // collect promises for any async actions during plotting
    // any part of the plotting code can push to gd._promises, then
    // before we move to the next step, we check that they're all
    // complete, and empty out the promise list again.
    gd._promises = [];

    var graphWasEmpty = ((gd.data || []).length === 0 && Array.isArray(data));

    // if there is already data on the graph, append the new data
    // if you only want to redraw, pass a non-array for data
    if(Array.isArray(data)) {
        helpers.cleanData(data, gd.data);

        if(graphWasEmpty) gd.data = data;
        else gd.data.push.apply(gd.data, data);

        // for routines outside graph_obj that want a clean tab
        // (rather than appending to an existing one) gd.empty
        // is used to determine whether to make a new tab
        gd.empty = false;
    }

    if(!gd.layout || graphWasEmpty) gd.layout = helpers.cleanLayout(layout);

    // if the user is trying to drag the axes, allow new data and layout
    // to come in but don't allow a replot.
    if(gd._dragging && !gd._transitioning) {
        // signal to drag handler that after everything else is done
        // we need to replot, because something has changed
        gd._replotPending = true;
        return Promise.reject();
    } else {
        // we're going ahead with a replot now
        gd._replotPending = false;
    }

    Plots.supplyDefaults(gd);

    // Polar plots
    if(data && data[0] && data[0].r) return plotPolar(gd, data, layout);

    // so we don't try to re-call Plotly.plot from inside
    // legend and colorbar, if margins changed
    gd._replotting = true;

    // make or remake the framework if we need to
    if(graphWasEmpty) makePlotFramework(gd);

    // polar need a different framework
    if(gd.framework !== makePlotFramework) {
        gd.framework = makePlotFramework;
        makePlotFramework(gd);
    }

    // save initial axis range once per graph
    if(graphWasEmpty) Plotly.Axes.saveRangeInitial(gd);

    var fullLayout = gd._fullLayout;

    // prepare the data and find the autorange

    // generate calcdata, if we need to
    // to force redoing calcdata, just delete it before calling Plotly.plot
    var recalc = !gd.calcdata || gd.calcdata.length !== (gd._fullData || []).length;
    if(recalc) Plots.doCalcdata(gd);

    // in case it has changed, attach fullData traces to calcdata
    for(var i = 0; i < gd.calcdata.length; i++) {
        gd.calcdata[i][0].trace = gd._fullData[i];
    }

    /*
     * start async-friendly code - now we're actually drawing things
     */

    var oldmargins = JSON.stringify(fullLayout._size);

    // draw framework first so that margin-pushing
    // components can position themselves correctly
    function drawFramework() {
        var basePlotModules = fullLayout._basePlotModules;

        for(var i = 0; i < basePlotModules.length; i++) {
            if(basePlotModules[i].drawFramework) {
                basePlotModules[i].drawFramework(gd);
            }
        }

        return Lib.syncOrAsync([
            subroutines.layoutStyles,
            drawAxes,
            Fx.init
        ], gd);
    }

    // draw anything that can affect margins.
    // currently this is legend and colorbars
    function marginPushers() {
        var calcdata = gd.calcdata;
        var i, cd, trace;

        Registry.getComponentMethod('legend', 'draw')(gd);
        Registry.getComponentMethod('rangeselector', 'draw')(gd);
        Registry.getComponentMethod('updatemenus', 'draw')(gd);
        Registry.getComponentMethod('sliders', 'draw')(gd);

        for(i = 0; i < calcdata.length; i++) {
            cd = calcdata[i];
            trace = cd[0].trace;
            if(trace.visible !== true || !trace._module.colorbar) {
                Plots.autoMargin(gd, 'cb' + trace.uid);
            }
            else trace._module.colorbar(gd, cd);
        }

        Plots.doAutoMargin(gd);
        return Plots.previousPromises(gd);
    }

    // in case the margins changed, draw margin pushers again
    function marginPushersAgain() {
        var seq = JSON.stringify(fullLayout._size) === oldmargins ?
            [] :
            [marginPushers, subroutines.layoutStyles];

        // re-initialize cartesian interaction,
        // which are sometimes cleared during marginPushers
        seq = seq.concat(Fx.init);

        return Lib.syncOrAsync(seq, gd);
    }

    function positionAndAutorange() {
        if(!recalc) return;

        var subplots = Plots.getSubplotIds(fullLayout, 'cartesian'),
            modules = fullLayout._modules;

        // position and range calculations for traces that
        // depend on each other ie bars (stacked or grouped)
        // and boxes (grouped) push each other out of the way

        var subplotInfo, _module;

        for(var i = 0; i < subplots.length; i++) {
            subplotInfo = fullLayout._plots[subplots[i]];

            for(var j = 0; j < modules.length; j++) {
                _module = modules[j];
                if(_module.setPositions) _module.setPositions(gd, subplotInfo);
            }
        }

        // calc and autorange for errorbars
        ErrorBars.calc(gd);

        // TODO: autosize extra for text markers
        return Lib.syncOrAsync([
            Registry.getComponentMethod('shapes', 'calcAutorange'),
            Registry.getComponentMethod('annotations', 'calcAutorange'),
            doAutoRange
        ], gd);
    }

    function doAutoRange() {
        if(gd._transitioning) return;

        var axList = Plotly.Axes.list(gd, '', true);
        for(var i = 0; i < axList.length; i++) {
            Plotly.Axes.doAutoRange(axList[i]);
        }
    }

    // draw ticks, titles, and calculate axis scaling (._b, ._m)
    function drawAxes() {
        return Plotly.Axes.doTicks(gd, 'redraw');
    }

    // Now plot the data
    function drawData() {
        var calcdata = gd.calcdata,
            i;

        // in case of traces that were heatmaps or contour maps
        // previously, remove them and their colorbars explicitly
        for(i = 0; i < calcdata.length; i++) {
            var trace = calcdata[i][0].trace,
                isVisible = (trace.visible === true),
                uid = trace.uid;

            if(!isVisible || !Registry.traceIs(trace, '2dMap')) {
                fullLayout._paper.selectAll(
                    '.hm' + uid +
                    ',.contour' + uid +
                    ',#clip' + uid
                ).remove();
            }

            if(!isVisible || !trace._module.colorbar) {
                fullLayout._infolayer.selectAll('.cb' + uid).remove();
            }
        }

        // loop over the base plot modules present on graph
        var basePlotModules = fullLayout._basePlotModules;
        for(i = 0; i < basePlotModules.length; i++) {
            basePlotModules[i].plot(gd);
        }

        // keep reference to shape layers in subplots
        var layerSubplot = fullLayout._paper.selectAll('.layer-subplot');
        fullLayout._imageSubplotLayer = layerSubplot.selectAll('.imagelayer');
        fullLayout._shapeSubplotLayer = layerSubplot.selectAll('.shapelayer');

        // styling separate from drawing
        Plots.style(gd);

        // show annotations and shapes
        Registry.getComponentMethod('shapes', 'draw')(gd);
        Registry.getComponentMethod('annotations', 'draw')(gd);

        // source links
        Plots.addLinks(gd);

        // Mark the first render as complete
        gd._replotting = false;

        return Plots.previousPromises(gd);
    }

    // An initial paint must be completed before these components can be
    // correctly sized and the whole plot re-margined. gd._replotting must
    // be set to false before these will work properly.
    function finalDraw() {
        Registry.getComponentMethod('shapes', 'draw')(gd);
        Registry.getComponentMethod('images', 'draw')(gd);
        Registry.getComponentMethod('annotations', 'draw')(gd);
        Registry.getComponentMethod('legend', 'draw')(gd);
        Registry.getComponentMethod('rangeslider', 'draw')(gd);
        Registry.getComponentMethod('rangeselector', 'draw')(gd);
        Registry.getComponentMethod('updatemenus', 'draw')(gd);
        Registry.getComponentMethod('sliders', 'draw')(gd);
    }

    function cleanUp() {
        // now we're REALLY TRULY done plotting...
        // so mark it as done and let other procedures call a replot
        gd.emit('plotly_afterplot');
    }

    Lib.syncOrAsync([
        Plots.previousPromises,
        addFrames,
        drawFramework,
        marginPushers,
        marginPushersAgain,
        positionAndAutorange,
        subroutines.layoutStyles,
        drawAxes,
        drawData,
        finalDraw
    ], gd, cleanUp);

    // even if everything we did was synchronous, return a promise
    // so that the caller doesn't care which route we took
    return Promise.all(gd._promises).then(function() {
        return gd;
    });
};


function opaqueSetBackground(gd, bgColor) {
    gd._fullLayout._paperdiv.style('background', 'white');
    Plotly.defaultConfig.setBackground(gd, bgColor);
}

function setPlotContext(gd, config) {
    if(!gd._context) gd._context = Lib.extendFlat({}, Plotly.defaultConfig);
    var context = gd._context;

    if(config) {
        Object.keys(config).forEach(function(key) {
            if(key in context) {
                if(key === 'setBackground' && config[key] === 'opaque') {
                    context[key] = opaqueSetBackground;
                }
                else context[key] = config[key];
            }
        });

        // map plot3dPixelRatio to plotGlPixelRatio for backward compatibility
        if(config.plot3dPixelRatio && !context.plotGlPixelRatio) {
            context.plotGlPixelRatio = context.plot3dPixelRatio;
        }
    }

    // staticPlot forces a bunch of others:
    if(context.staticPlot) {
        context.editable = false;
        context.autosizable = false;
        context.scrollZoom = false;
        context.doubleClick = false;
        context.showTips = false;
        context.showLink = false;
        context.displayModeBar = false;
    }
}

function plotPolar(gd, data, layout) {
    // build or reuse the container skeleton
    var plotContainer = d3.select(gd).selectAll('.plot-container')
        .data([0]);
    plotContainer.enter()
        .insert('div', ':first-child')
        .classed('plot-container plotly', true);
    var paperDiv = plotContainer.selectAll('.svg-container')
        .data([0]);
    paperDiv.enter().append('div')
        .classed('svg-container', true)
        .style('position', 'relative');

    // empty it everytime for now
    paperDiv.html('');

    // fulfill gd requirements
    if(data) gd.data = data;
    if(layout) gd.layout = layout;
    Polar.manager.fillLayout(gd);

    // resize canvas
    paperDiv.style({
        width: gd._fullLayout.width + 'px',
        height: gd._fullLayout.height + 'px'
    });

    // instantiate framework
    gd.framework = Polar.manager.framework(gd);

    // plot
    gd.framework({data: gd.data, layout: gd.layout}, paperDiv.node());

    // set undo point
    gd.framework.setUndoPoint();

    // get the resulting svg for extending it
    var polarPlotSVG = gd.framework.svg();

    // editable title
    var opacity = 1;
    var txt = gd._fullLayout.title;
    if(txt === '' || !txt) opacity = 0;
    var placeholderText = 'Click to enter title';

    var titleLayout = function() {
        this.call(svgTextUtils.convertToTspans);
        // TODO: html/mathjax
        // TODO: center title
    };

    var title = polarPlotSVG.select('.title-group text')
        .call(titleLayout);

    if(gd._context.editable) {
        title.attr({'data-unformatted': txt});
        if(!txt || txt === placeholderText) {
            opacity = 0.2;
            title.attr({'data-unformatted': placeholderText})
                .text(placeholderText)
                .style({opacity: opacity})
                .on('mouseover.opacity', function() {
                    d3.select(this).transition().duration(100)
                        .style('opacity', 1);
                })
                .on('mouseout.opacity', function() {
                    d3.select(this).transition().duration(1000)
                        .style('opacity', 0);
                });
        }

        var setContenteditable = function() {
            this.call(svgTextUtils.makeEditable)
                .on('edit', function(text) {
                    gd.framework({layout: {title: text}});
                    this.attr({'data-unformatted': text})
                        .text(text)
                        .call(titleLayout);
                    this.call(setContenteditable);
                })
                .on('cancel', function() {
                    var txt = this.attr('data-unformatted');
                    this.text(txt).call(titleLayout);
                });
        };
        title.call(setContenteditable);
    }

    gd._context.setBackground(gd, gd._fullLayout.paper_bgcolor);
    Plots.addLinks(gd);

    return Promise.resolve();
}

// convenience function to force a full redraw, mostly for use by plotly.js
Plotly.redraw = function(gd) {
    gd = helpers.getGraphDiv(gd);

    if(!Lib.isPlotDiv(gd)) {
        throw new Error('This element is not a Plotly plot: ' + gd);
    }

    helpers.cleanData(gd.data, gd.data);
    helpers.cleanLayout(gd.layout);

    gd.calcdata = undefined;
    return Plotly.plot(gd).then(function() {
        gd.emit('plotly_redraw');
        return gd;
    });
};

/**
 * Convenience function to make idempotent plot option obvious to users.
 *
 * @param gd
 * @param {Object[]} data
 * @param {Object} layout
 * @param {Object} config
 */
Plotly.newPlot = function(gd, data, layout, config) {
    gd = helpers.getGraphDiv(gd);

    // remove gl contexts
    Plots.cleanPlot([], {}, gd._fullData || {}, gd._fullLayout || {});

    Plots.purge(gd);
    return Plotly.plot(gd, data, layout, config);
};

/**
 * Wrap negative indicies to their positive counterparts.
 *
 * @param {Number[]} indices An array of indices
 * @param {Number} maxIndex The maximum index allowable (arr.length - 1)
 */
function positivifyIndices(indices, maxIndex) {
    var parentLength = maxIndex + 1,
        positiveIndices = [],
        i,
        index;

    for(i = 0; i < indices.length; i++) {
        index = indices[i];
        if(index < 0) {
            positiveIndices.push(parentLength + index);
        } else {
            positiveIndices.push(index);
        }
    }
    return positiveIndices;
}

/**
 * Ensures that an index array for manipulating gd.data is valid.
 *
 * Intended for use with addTraces, deleteTraces, and moveTraces.
 *
 * @param gd
 * @param indices
 * @param arrayName
 */
function assertIndexArray(gd, indices, arrayName) {
    var i,
        index;

    for(i = 0; i < indices.length; i++) {
        index = indices[i];

        // validate that indices are indeed integers
        if(index !== parseInt(index, 10)) {
            throw new Error('all values in ' + arrayName + ' must be integers');
        }

        // check that all indices are in bounds for given gd.data array length
        if(index >= gd.data.length || index < -gd.data.length) {
            throw new Error(arrayName + ' must be valid indices for gd.data.');
        }

        // check that indices aren't repeated
        if(indices.indexOf(index, i + 1) > -1 ||
                index >= 0 && indices.indexOf(-gd.data.length + index) > -1 ||
                index < 0 && indices.indexOf(gd.data.length + index) > -1) {
            throw new Error('each index in ' + arrayName + ' must be unique.');
        }
    }
}

/**
 * Private function used by Plotly.moveTraces to check input args
 *
 * @param gd
 * @param currentIndices
 * @param newIndices
 */
function checkMoveTracesArgs(gd, currentIndices, newIndices) {

    // check that gd has attribute 'data' and 'data' is array
    if(!Array.isArray(gd.data)) {
        throw new Error('gd.data must be an array.');
    }

    // validate currentIndices array
    if(typeof currentIndices === 'undefined') {
        throw new Error('currentIndices is a required argument.');
    } else if(!Array.isArray(currentIndices)) {
        currentIndices = [currentIndices];
    }
    assertIndexArray(gd, currentIndices, 'currentIndices');

    // validate newIndices array if it exists
    if(typeof newIndices !== 'undefined' && !Array.isArray(newIndices)) {
        newIndices = [newIndices];
    }
    if(typeof newIndices !== 'undefined') {
        assertIndexArray(gd, newIndices, 'newIndices');
    }

    // check currentIndices and newIndices are the same length if newIdices exists
    if(typeof newIndices !== 'undefined' && currentIndices.length !== newIndices.length) {
        throw new Error('current and new indices must be of equal length.');
    }

}
/**
 * A private function to reduce the type checking clutter in addTraces.
 *
 * @param gd
 * @param traces
 * @param newIndices
 */
function checkAddTracesArgs(gd, traces, newIndices) {
    var i, value;

    // check that gd has attribute 'data' and 'data' is array
    if(!Array.isArray(gd.data)) {
        throw new Error('gd.data must be an array.');
    }

    // make sure traces exists
    if(typeof traces === 'undefined') {
        throw new Error('traces must be defined.');
    }

    // make sure traces is an array
    if(!Array.isArray(traces)) {
        traces = [traces];
    }

    // make sure each value in traces is an object
    for(i = 0; i < traces.length; i++) {
        value = traces[i];
        if(typeof value !== 'object' || (Array.isArray(value) || value === null)) {
            throw new Error('all values in traces array must be non-array objects');
        }
    }

    // make sure we have an index for each trace
    if(typeof newIndices !== 'undefined' && !Array.isArray(newIndices)) {
        newIndices = [newIndices];
    }
    if(typeof newIndices !== 'undefined' && newIndices.length !== traces.length) {
        throw new Error(
            'if indices is specified, traces.length must equal indices.length'
        );
    }
}

/**
 * A private function to reduce the type checking clutter in spliceTraces.
 * Get all update Properties from gd.data. Validate inputs and outputs.
 * Used by prependTrace and extendTraces
 *
 * @param gd
 * @param update
 * @param indices
 * @param maxPoints
 */
function assertExtendTracesArgs(gd, update, indices, maxPoints) {

    var maxPointsIsObject = Lib.isPlainObject(maxPoints);

    if(!Array.isArray(gd.data)) {
        throw new Error('gd.data must be an array');
    }
    if(!Lib.isPlainObject(update)) {
        throw new Error('update must be a key:value object');
    }

    if(typeof indices === 'undefined') {
        throw new Error('indices must be an integer or array of integers');
    }

    assertIndexArray(gd, indices, 'indices');

    for(var key in update) {

        /*
         * Verify that the attribute to be updated contains as many trace updates
         * as indices. Failure must result in throw and no-op
         */
        if(!Array.isArray(update[key]) || update[key].length !== indices.length) {
            throw new Error('attribute ' + key + ' must be an array of length equal to indices array length');
        }

        /*
         * if maxPoints is an object it must match keys and array lengths of 'update' 1:1
         */
        if(maxPointsIsObject &&
            (!(key in maxPoints) || !Array.isArray(maxPoints[key]) ||
            maxPoints[key].length !== update[key].length)) {
            throw new Error('when maxPoints is set as a key:value object it must contain a 1:1 ' +
                            'corrispondence with the keys and number of traces in the update object');
        }
    }
}

/**
 * A private function to reduce the type checking clutter in spliceTraces.
 *
 * @param {Object|HTMLDivElement} gd
 * @param {Object} update
 * @param {Number[]} indices
 * @param {Number||Object} maxPoints
 * @return {Object[]}
 */
function getExtendProperties(gd, update, indices, maxPoints) {

    var maxPointsIsObject = Lib.isPlainObject(maxPoints),
        updateProps = [];
    var trace, target, prop, insert, maxp;

    // allow scalar index to represent a single trace position
    if(!Array.isArray(indices)) indices = [indices];

    // negative indices are wrapped around to their positive value. Equivalent to python indexing.
    indices = positivifyIndices(indices, gd.data.length - 1);

    // loop through all update keys and traces and harvest validated data.
    for(var key in update) {

        for(var j = 0; j < indices.length; j++) {

            /*
             * Choose the trace indexed by the indices map argument and get the prop setter-getter
             * instance that references the key and value for this particular trace.
             */
            trace = gd.data[indices[j]];
            prop = Lib.nestedProperty(trace, key);

            /*
             * Target is the existing gd.data.trace.dataArray value like "x" or "marker.size"
             * Target must exist as an Array to allow the extend operation to be performed.
             */
            target = prop.get();
            insert = update[key][j];

            if(!Array.isArray(insert)) {
                throw new Error('attribute: ' + key + ' index: ' + j + ' must be an array');
            }
            if(!Array.isArray(target)) {
                throw new Error('cannot extend missing or non-array attribute: ' + key);
            }

            /*
             * maxPoints may be an object map or a scalar. If object select the key:value, else
             * Use the scalar maxPoints for all key and trace combinations.
             */
            maxp = maxPointsIsObject ? maxPoints[key][j] : maxPoints;

            // could have chosen null here, -1 just tells us to not take a window
            if(!isNumeric(maxp)) maxp = -1;

            /*
             * Wrap the nestedProperty in an object containing required data
             * for lengthening and windowing this particular trace - key combination.
             * Flooring maxp mirrors the behaviour of floats in the Array.slice JSnative function.
             */
            updateProps.push({
                prop: prop,
                target: target,
                insert: insert,
                maxp: Math.floor(maxp)
            });
        }
    }

    // all target and insertion data now validated
    return updateProps;
}

/**
 * A private function to key Extend and Prepend traces DRY
 *
 * @param {Object|HTMLDivElement} gd
 * @param {Object} update
 * @param {Number[]} indices
 * @param {Number||Object} maxPoints
 * @param {Function} lengthenArray
 * @param {Function} spliceArray
 * @return {Object}
 */
function spliceTraces(gd, update, indices, maxPoints, lengthenArray, spliceArray) {

    assertExtendTracesArgs(gd, update, indices, maxPoints);

    var updateProps = getExtendProperties(gd, update, indices, maxPoints),
        remainder = [],
        undoUpdate = {},
        undoPoints = {};
    var target, prop, maxp;

    for(var i = 0; i < updateProps.length; i++) {

        /*
         * prop is the object returned by Lib.nestedProperties
         */
        prop = updateProps[i].prop;
        maxp = updateProps[i].maxp;

        target = lengthenArray(updateProps[i].target, updateProps[i].insert);

        /*
         * If maxp is set within post-extension trace.length, splice to maxp length.
         * Otherwise skip function call as splice op will have no effect anyway.
         */
        if(maxp >= 0 && maxp < target.length) remainder = spliceArray(target, maxp);

        /*
         * to reverse this operation we need the size of the original trace as the reverse
         * operation will need to window out any lengthening operation performed in this pass.
         */
        maxp = updateProps[i].target.length;

        /*
         * Magic happens here! update gd.data.trace[key] with new array data.
         */
        prop.set(target);

        if(!Array.isArray(undoUpdate[prop.astr])) undoUpdate[prop.astr] = [];
        if(!Array.isArray(undoPoints[prop.astr])) undoPoints[prop.astr] = [];

        /*
         * build the inverse update object for the undo operation
         */
        undoUpdate[prop.astr].push(remainder);

        /*
         * build the matching maxPoints undo object containing original trace lengths.
         */
        undoPoints[prop.astr].push(maxp);
    }

    return {update: undoUpdate, maxPoints: undoPoints};
}

/**
 * extend && prepend traces at indices with update arrays, window trace lengths to maxPoints
 *
 * Extend and Prepend have identical APIs. Prepend inserts an array at the head while Extend
 * inserts an array off the tail. Prepend truncates the tail of the array - counting maxPoints
 * from the head, whereas Extend truncates the head of the array, counting backward maxPoints
 * from the tail.
 *
 * If maxPoints is undefined, nonNumeric, negative or greater than extended trace length no
 * truncation / windowing will be performed. If its zero, well the whole trace is truncated.
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object} update The key:array map of target attributes to extend
 * @param {Number|Number[]} indices The locations of traces to be extended
 * @param {Number|Object} [maxPoints] Number of points for trace window after lengthening.
 *
 */
Plotly.extendTraces = function extendTraces(gd, update, indices, maxPoints) {
    gd = helpers.getGraphDiv(gd);

    var undo = spliceTraces(gd, update, indices, maxPoints,

                           /*
                            * The Lengthen operation extends trace from end with insert
                            */
                            function(target, insert) {
                                return target.concat(insert);
                            },

                            /*
                             * Window the trace keeping maxPoints, counting back from the end
                             */
                            function(target, maxPoints) {
                                return target.splice(0, target.length - maxPoints);
                            });

    var promise = Plotly.redraw(gd);

    var undoArgs = [gd, undo.update, indices, undo.maxPoints];
    Queue.add(gd, Plotly.prependTraces, undoArgs, extendTraces, arguments);

    return promise;
};

Plotly.prependTraces = function prependTraces(gd, update, indices, maxPoints) {
    gd = helpers.getGraphDiv(gd);

    var undo = spliceTraces(gd, update, indices, maxPoints,

                           /*
                            * The Lengthen operation extends trace by appending insert to start
                            */
                            function(target, insert) {
                                return insert.concat(target);
                            },

                            /*
                             * Window the trace keeping maxPoints, counting forward from the start
                             */
                            function(target, maxPoints) {
                                return target.splice(maxPoints, target.length);
                            });

    var promise = Plotly.redraw(gd);

    var undoArgs = [gd, undo.update, indices, undo.maxPoints];
    Queue.add(gd, Plotly.extendTraces, undoArgs, prependTraces, arguments);

    return promise;
};

/**
 * Add data traces to an existing graph div.
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object[]} gd.data The array of traces we're adding to
 * @param {Object[]|Object} traces The object or array of objects to add
 * @param {Number[]|Number} [newIndices=[gd.data.length]] Locations to add traces
 *
 */
Plotly.addTraces = function addTraces(gd, traces, newIndices) {
    gd = helpers.getGraphDiv(gd);

    var currentIndices = [],
        undoFunc = Plotly.deleteTraces,
        redoFunc = addTraces,
        undoArgs = [gd, currentIndices],
        redoArgs = [gd, traces],  // no newIndices here
        i,
        promise;

    // all validation is done elsewhere to remove clutter here
    checkAddTracesArgs(gd, traces, newIndices);

    // make sure traces is an array
    if(!Array.isArray(traces)) {
        traces = [traces];
    }

    // make sure traces do not repeat existing ones
    traces = traces.map(function(trace) {
        return Lib.extendFlat({}, trace);
    });

    helpers.cleanData(traces, gd.data);

    // add the traces to gd.data (no redrawing yet!)
    for(i = 0; i < traces.length; i++) {
        gd.data.push(traces[i]);
    }

    // to continue, we need to call moveTraces which requires currentIndices
    for(i = 0; i < traces.length; i++) {
        currentIndices.push(-traces.length + i);
    }

    // if the user didn't define newIndices, they just want the traces appended
    // i.e., we can simply redraw and be done
    if(typeof newIndices === 'undefined') {
        promise = Plotly.redraw(gd);
        Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);
        return promise;
    }

    // make sure indices is property defined
    if(!Array.isArray(newIndices)) {
        newIndices = [newIndices];
    }

    try {

        // this is redundant, but necessary to not catch later possible errors!
        checkMoveTracesArgs(gd, currentIndices, newIndices);
    }
    catch(error) {

        // something went wrong, reset gd to be safe and rethrow error
        gd.data.splice(gd.data.length - traces.length, traces.length);
        throw error;
    }

    // if we're here, the user has defined specific places to place the new traces
    // this requires some extra work that moveTraces will do
    Queue.startSequence(gd);
    Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);
    promise = Plotly.moveTraces(gd, currentIndices, newIndices);
    Queue.stopSequence(gd);
    return promise;
};

/**
 * Delete traces at `indices` from gd.data array.
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object[]} gd.data The array of traces we're removing from
 * @param {Number|Number[]} indices The indices
 */
Plotly.deleteTraces = function deleteTraces(gd, indices) {
    gd = helpers.getGraphDiv(gd);

    var traces = [],
        undoFunc = Plotly.addTraces,
        redoFunc = deleteTraces,
        undoArgs = [gd, traces, indices],
        redoArgs = [gd, indices],
        i,
        deletedTrace;

    // make sure indices are defined
    if(typeof indices === 'undefined') {
        throw new Error('indices must be an integer or array of integers.');
    } else if(!Array.isArray(indices)) {
        indices = [indices];
    }
    assertIndexArray(gd, indices, 'indices');

    // convert negative indices to positive indices
    indices = positivifyIndices(indices, gd.data.length - 1);

    // we want descending here so that splicing later doesn't affect indexing
    indices.sort(Lib.sorterDes);
    for(i = 0; i < indices.length; i += 1) {
        deletedTrace = gd.data.splice(indices[i], 1)[0];
        traces.push(deletedTrace);
    }

    var promise = Plotly.redraw(gd);
    Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return promise;
};

/**
 * Move traces at currentIndices array to locations in newIndices array.
 *
 * If newIndices is omitted, currentIndices will be moved to the end. E.g.,
 * these are equivalent:
 *
 * Plotly.moveTraces(gd, [1, 2, 3], [-3, -2, -1])
 * Plotly.moveTraces(gd, [1, 2, 3])
 *
 * @param {Object|HTMLDivElement} gd The graph div
 * @param {Object[]} gd.data The array of traces we're removing from
 * @param {Number|Number[]} currentIndices The locations of traces to be moved
 * @param {Number|Number[]} [newIndices] The locations to move traces to
 *
 * Example calls:
 *
 *      // move trace i to location x
 *      Plotly.moveTraces(gd, i, x)
 *
 *      // move trace i to end of array
 *      Plotly.moveTraces(gd, i)
 *
 *      // move traces i, j, k to end of array (i != j != k)
 *      Plotly.moveTraces(gd, [i, j, k])
 *
 *      // move traces [i, j, k] to [x, y, z] (i != j != k) (x != y != z)
 *      Plotly.moveTraces(gd, [i, j, k], [x, y, z])
 *
 *      // reorder all traces (assume there are 5--a, b, c, d, e)
 *      Plotly.moveTraces(gd, [b, d, e, a, c])  // same as 'move to end'
 */
Plotly.moveTraces = function moveTraces(gd, currentIndices, newIndices) {
    gd = helpers.getGraphDiv(gd);

    var newData = [],
        movingTraceMap = [],
        undoFunc = moveTraces,
        redoFunc = moveTraces,
        undoArgs = [gd, newIndices, currentIndices],
        redoArgs = [gd, currentIndices, newIndices],
        i;

    // to reduce complexity here, check args elsewhere
    // this throws errors where appropriate
    checkMoveTracesArgs(gd, currentIndices, newIndices);

    // make sure currentIndices is an array
    currentIndices = Array.isArray(currentIndices) ? currentIndices : [currentIndices];

    // if undefined, define newIndices to point to the end of gd.data array
    if(typeof newIndices === 'undefined') {
        newIndices = [];
        for(i = 0; i < currentIndices.length; i++) {
            newIndices.push(-currentIndices.length + i);
        }
    }

    // make sure newIndices is an array if it's user-defined
    newIndices = Array.isArray(newIndices) ? newIndices : [newIndices];

    // convert negative indices to positive indices (they're the same length)
    currentIndices = positivifyIndices(currentIndices, gd.data.length - 1);
    newIndices = positivifyIndices(newIndices, gd.data.length - 1);

    // at this point, we've coerced the index arrays into predictable forms

    // get the traces that aren't being moved around
    for(i = 0; i < gd.data.length; i++) {

        // if index isn't in currentIndices, include it in ignored!
        if(currentIndices.indexOf(i) === -1) {
            newData.push(gd.data[i]);
        }
    }

    // get a mapping of indices to moving traces
    for(i = 0; i < currentIndices.length; i++) {
        movingTraceMap.push({newIndex: newIndices[i], trace: gd.data[currentIndices[i]]});
    }

    // reorder this mapping by newIndex, ascending
    movingTraceMap.sort(function(a, b) {
        return a.newIndex - b.newIndex;
    });

    // now, add the moving traces back in, in order!
    for(i = 0; i < movingTraceMap.length; i += 1) {
        newData.splice(movingTraceMap[i].newIndex, 0, movingTraceMap[i].trace);
    }

    gd.data = newData;

    var promise = Plotly.redraw(gd);
    Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return promise;
};

/**
 * restyle: update trace attributes of an existing plot
 *
 * Can be called two ways.
 *
 * Signature 1:
 * @param {String | HTMLDivElement} gd
 *  the id or DOM element of the graph container div
 * @param {String} astr
 *  attribute string (like `'marker.symbol'`) to update
 * @param {*} val
 *  value to give this attribute
 * @param {Number[] | Number} [traces]
 *  integer or array of integers for the traces to alter (all if omitted)
 *
 * Signature 2:
 * @param {String | HTMLDivElement} gd
 *  (as in signature 1)
 * @param {Object} aobj
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  allows setting multiple attributes simultaneously
 * @param {Number[] | Number} [traces]
 *  (as in signature 1)
 *
 * `val` (or `val1`, `val2` ... in the object form) can be an array,
 * to apply different values to each trace.
 *
 * If the array is too short, it will wrap around (useful for
 * style files that want to specify cyclical default values).
 */
Plotly.restyle = function restyle(gd, astr, val, traces) {
    gd = helpers.getGraphDiv(gd);
    helpers.clearPromiseQueue(gd);

    var aobj = {};
    if(typeof astr === 'string') aobj[astr] = val;
    else if(Lib.isPlainObject(astr)) {
        // the 3-arg form
        aobj = astr;
        if(traces === undefined) traces = val;
    }
    else {
        Lib.warn('Restyle fail.', astr, val, traces);
        return Promise.reject();
    }

    if(Object.keys(aobj).length) gd.changed = true;

    var specs = _restyle(gd, aobj, traces),
        flags = specs.flags;

    // clear calcdata if required
    if(flags.clearCalc) gd.calcdata = undefined;

    // fill in redraw sequence
    var seq = [];

    if(flags.fullReplot) {
        seq.push(Plotly.plot);
    }
    else {
        seq.push(Plots.previousPromises);

        Plots.supplyDefaults(gd);

        if(flags.dostyle) seq.push(subroutines.doTraceStyle);
        if(flags.docolorbars) seq.push(subroutines.doColorBars);
    }

    Queue.add(gd,
        restyle, [gd, specs.undoit, specs.traces],
        restyle, [gd, specs.redoit, specs.traces]
    );

    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve();

    return plotDone.then(function() {
        gd.emit('plotly_restyle', specs.eventData);
        return gd;
    });
};

function _restyle(gd, aobj, _traces) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData,
        data = gd.data,
        i;

    var traces = helpers.coerceTraceIndices(gd, _traces);

    // initialize flags
    var flags = {
        docalc: false,
        docalcAutorange: false,
        doplot: false,
        dostyle: false,
        docolorbars: false,
        autorangeOn: false,
        clearCalc: false,
        fullReplot: false
    };

    // copies of the change (and previous values of anything affected)
    // for the undo / redo queue
    var redoit = {},
        undoit = {},
        axlist,
        flagAxForDelete = {};

    // recalcAttrs attributes need a full regeneration of calcdata
    // as well as a replot, because the right objects may not exist,
    // or autorange may need recalculating
    // in principle we generally shouldn't need to redo ALL traces... that's
    // harder though.
    var recalcAttrs = [
        'mode', 'visible', 'type', 'orientation', 'fill',
        'histfunc', 'histnorm', 'text',
        'x', 'y', 'z',
        'a', 'b', 'c',
        'open', 'high', 'low', 'close',
        'base', 'width', 'offset',
        'xtype', 'x0', 'dx', 'ytype', 'y0', 'dy', 'xaxis', 'yaxis',
        'line.width',
        'connectgaps', 'transpose', 'zsmooth',
        'showscale', 'marker.showscale',
        'zauto', 'marker.cauto',
        'autocolorscale', 'marker.autocolorscale',
        'colorscale', 'marker.colorscale',
        'reversescale', 'marker.reversescale',
        'autobinx', 'nbinsx', 'xbins', 'xbins.start', 'xbins.end', 'xbins.size',
        'autobiny', 'nbinsy', 'ybins', 'ybins.start', 'ybins.end', 'ybins.size',
        'autocontour', 'ncontours', 'contours', 'contours.coloring',
        'error_y', 'error_y.visible', 'error_y.value', 'error_y.type',
        'error_y.traceref', 'error_y.array', 'error_y.symmetric',
        'error_y.arrayminus', 'error_y.valueminus', 'error_y.tracerefminus',
        'error_x', 'error_x.visible', 'error_x.value', 'error_x.type',
        'error_x.traceref', 'error_x.array', 'error_x.symmetric',
        'error_x.arrayminus', 'error_x.valueminus', 'error_x.tracerefminus',
        'swapxy', 'swapxyaxes', 'orientationaxes',
        'marker.colors', 'values', 'labels', 'label0', 'dlabel', 'sort',
        'textinfo', 'textposition', 'textfont.size', 'textfont.family', 'textfont.color',
        'insidetextfont.size', 'insidetextfont.family', 'insidetextfont.color',
        'outsidetextfont.size', 'outsidetextfont.family', 'outsidetextfont.color',
        'hole', 'scalegroup', 'domain', 'domain.x', 'domain.y',
        'domain.x[0]', 'domain.x[1]', 'domain.y[0]', 'domain.y[1]',
        'tilt', 'tiltaxis', 'depth', 'direction', 'rotation', 'pull',
        'line.showscale', 'line.cauto', 'line.autocolorscale', 'line.reversescale',
        'marker.line.showscale', 'marker.line.cauto', 'marker.line.autocolorscale', 'marker.line.reversescale',
        'xcalendar', 'ycalendar'
    ];

    for(i = 0; i < traces.length; i++) {
        if(Registry.traceIs(fullData[traces[i]], 'box')) {
            recalcAttrs.push('name');
            break;
        }
    }

    // autorangeAttrs attributes need a full redo of calcdata
    // only if an axis is autoranged,
    // because .calc() is where the autorange gets determined
    // TODO: could we break this out as well?
    var autorangeAttrs = [
        'marker', 'marker.size', 'textfont',
        'boxpoints', 'jitter', 'pointpos', 'whiskerwidth', 'boxmean',
        'tickwidth'
    ];

    // replotAttrs attributes need a replot (because different
    // objects need to be made) but not a recalc
    var replotAttrs = [
        'zmin', 'zmax', 'zauto',
        'xgap', 'ygap',
        'marker.cmin', 'marker.cmax', 'marker.cauto',
        'line.cmin', 'line.cmax',
        'marker.line.cmin', 'marker.line.cmax',
        'contours.start', 'contours.end', 'contours.size',
        'contours.showlines',
        'line', 'line.smoothing', 'line.shape',
        'error_y.width', 'error_x.width', 'error_x.copy_ystyle',
        'marker.maxdisplayed'
    ];

    // these ones may alter the axis type
    // (at least if the first trace is involved)
    var axtypeAttrs = [
        'type', 'x', 'y', 'x0', 'y0', 'orientation', 'xaxis', 'yaxis'
    ];

    var zscl = ['zmin', 'zmax'],
        xbins = ['xbins.start', 'xbins.end', 'xbins.size'],
        ybins = ['ybins.start', 'ybins.end', 'ybins.size'],
        contourAttrs = ['contours.start', 'contours.end', 'contours.size'];

    // At the moment, only cartesian, pie and ternary plot types can afford
    // to not go through a full replot
    var doPlotWhiteList = ['cartesian', 'pie', 'ternary'];
    fullLayout._basePlotModules.forEach(function(_module) {
        if(doPlotWhiteList.indexOf(_module.name) === -1) flags.docalc = true;
    });

    // make a new empty vals array for undoit
    function a0() { return traces.map(function() { return undefined; }); }

    // for autoranging multiple axes
    function addToAxlist(axid) {
        var axName = Plotly.Axes.id2name(axid);
        if(axlist.indexOf(axName) === -1) axlist.push(axName);
    }

    function autorangeAttr(axName) { return 'LAYOUT' + axName + '.autorange'; }

    function rangeAttr(axName) { return 'LAYOUT' + axName + '.range'; }

    // for attrs that interact (like scales & autoscales), save the
    // old vals before making the change
    // val=undefined will not set a value, just record what the value was.
    // val=null will delete the attribute
    // attr can be an array to set several at once (all to the same val)
    function doextra(attr, val, i) {
        if(Array.isArray(attr)) {
            attr.forEach(function(a) { doextra(a, val, i); });
            return;
        }
        // quit if explicitly setting this elsewhere
        if(attr in aobj) return;

        var extraparam;
        if(attr.substr(0, 6) === 'LAYOUT') {
            extraparam = Lib.nestedProperty(gd.layout, attr.replace('LAYOUT', ''));
        } else {
            extraparam = Lib.nestedProperty(data[traces[i]], attr);
        }

        if(!(attr in undoit)) {
            undoit[attr] = a0();
        }
        if(undoit[attr][i] === undefined) {
            undoit[attr][i] = extraparam.get();
        }
        if(val !== undefined) {
            extraparam.set(val);
        }
    }

    // now make the changes to gd.data (and occasionally gd.layout)
    // and figure out what kind of graphics update we need to do
    for(var ai in aobj) {
        var vi = aobj[ai],
            cont,
            contFull,
            param,
            oldVal,
            newVal;

        redoit[ai] = vi;

        if(ai.substr(0, 6) === 'LAYOUT') {
            param = Lib.nestedProperty(gd.layout, ai.replace('LAYOUT', ''));
            undoit[ai] = [param.get()];
            // since we're allowing val to be an array, allow it here too,
            // even though that's meaningless
            param.set(Array.isArray(vi) ? vi[0] : vi);
            // ironically, the layout attrs in restyle only require replot,
            // not relayout
            flags.docalc = true;
            continue;
        }

        // set attribute in gd.data
        undoit[ai] = a0();
        for(i = 0; i < traces.length; i++) {
            cont = data[traces[i]];
            contFull = fullData[traces[i]];
            param = Lib.nestedProperty(cont, ai);
            oldVal = param.get();
            newVal = Array.isArray(vi) ? vi[i % vi.length] : vi;

            if(newVal === undefined) continue;

            // setting bin or z settings should turn off auto
            // and setting auto should save bin or z settings
            if(zscl.indexOf(ai) !== -1) {
                doextra('zauto', false, i);
            }
            else if(ai === 'colorscale') {
                doextra('autocolorscale', false, i);
            }
            else if(ai === 'autocolorscale') {
                doextra('colorscale', undefined, i);
            }
            else if(ai === 'marker.colorscale') {
                doextra('marker.autocolorscale', false, i);
            }
            else if(ai === 'marker.autocolorscale') {
                doextra('marker.colorscale', undefined, i);
            }
            else if(ai === 'zauto') {
                doextra(zscl, undefined, i);
            }
            else if(xbins.indexOf(ai) !== -1) {
                doextra('autobinx', false, i);
            }
            else if(ai === 'autobinx') {
                doextra(xbins, undefined, i);
            }
            else if(ybins.indexOf(ai) !== -1) {
                doextra('autobiny', false, i);
            }
            else if(ai === 'autobiny') {
                doextra(ybins, undefined, i);
            }
            else if(contourAttrs.indexOf(ai) !== -1) {
                doextra('autocontour', false, i);
            }
            else if(ai === 'autocontour') {
                doextra(contourAttrs, undefined, i);
            }
            // heatmaps: setting x0 or dx, y0 or dy,
            // should turn xtype/ytype to 'scaled' if 'array'
            else if(['x0', 'dx'].indexOf(ai) !== -1 &&
                    contFull.x && contFull.xtype !== 'scaled') {
                doextra('xtype', 'scaled', i);
            }
            else if(['y0', 'dy'].indexOf(ai) !== -1 &&
                    contFull.y && contFull.ytype !== 'scaled') {
                doextra('ytype', 'scaled', i);
            }
            // changing colorbar size modes,
            // make the resulting size not change
            // note that colorbar fractional sizing is based on the
            // original plot size, before anything (like a colorbar)
            // increases the margins
            else if(ai === 'colorbar.thicknessmode' && param.get() !== newVal &&
                        ['fraction', 'pixels'].indexOf(newVal) !== -1 &&
                        contFull.colorbar) {
                var thicknorm =
                    ['top', 'bottom'].indexOf(contFull.colorbar.orient) !== -1 ?
                        (fullLayout.height - fullLayout.margin.t - fullLayout.margin.b) :
                        (fullLayout.width - fullLayout.margin.l - fullLayout.margin.r);
                doextra('colorbar.thickness', contFull.colorbar.thickness *
                    (newVal === 'fraction' ? 1 / thicknorm : thicknorm), i);
            }
            else if(ai === 'colorbar.lenmode' && param.get() !== newVal &&
                        ['fraction', 'pixels'].indexOf(newVal) !== -1 &&
                        contFull.colorbar) {
                var lennorm =
                    ['top', 'bottom'].indexOf(contFull.colorbar.orient) !== -1 ?
                        (fullLayout.width - fullLayout.margin.l - fullLayout.margin.r) :
                        (fullLayout.height - fullLayout.margin.t - fullLayout.margin.b);
                doextra('colorbar.len', contFull.colorbar.len *
                    (newVal === 'fraction' ? 1 / lennorm : lennorm), i);
            }
            else if(ai === 'colorbar.tick0' || ai === 'colorbar.dtick') {
                doextra('colorbar.tickmode', 'linear', i);
            }
            else if(ai === 'colorbar.tickmode') {
                doextra(['colorbar.tick0', 'colorbar.dtick'], undefined, i);
            }


            if(ai === 'type' && (newVal === 'pie') !== (oldVal === 'pie')) {
                var labelsTo = 'x',
                    valuesTo = 'y';
                if((newVal === 'bar' || oldVal === 'bar') && cont.orientation === 'h') {
                    labelsTo = 'y';
                    valuesTo = 'x';
                }
                Lib.swapAttrs(cont, ['?', '?src'], 'labels', labelsTo);
                Lib.swapAttrs(cont, ['d?', '?0'], 'label', labelsTo);
                Lib.swapAttrs(cont, ['?', '?src'], 'values', valuesTo);

                if(oldVal === 'pie') {
                    Lib.nestedProperty(cont, 'marker.color')
                        .set(Lib.nestedProperty(cont, 'marker.colors').get());

                    // super kludgy - but if all pies are gone we won't remove them otherwise
                    fullLayout._pielayer.selectAll('g.trace').remove();
                } else if(Registry.traceIs(cont, 'cartesian')) {
                    Lib.nestedProperty(cont, 'marker.colors')
                        .set(Lib.nestedProperty(cont, 'marker.color').get());
                    // look for axes that are no longer in use and delete them
                    flagAxForDelete[cont.xaxis || 'x'] = true;
                    flagAxForDelete[cont.yaxis || 'y'] = true;
                }
            }

            undoit[ai][i] = oldVal;
            // set the new value - if val is an array, it's one el per trace
            // first check for attributes that get more complex alterations
            var swapAttrs = [
                'swapxy', 'swapxyaxes', 'orientation', 'orientationaxes'
            ];
            if(swapAttrs.indexOf(ai) !== -1) {
                // setting an orientation: make sure it's changing
                // before we swap everything else
                if(ai === 'orientation') {
                    param.set(newVal);
                    if(param.get() === undoit[ai][i]) continue;
                }
                // orientationaxes has no value,
                // it flips everything and the axes
                else if(ai === 'orientationaxes') {
                    cont.orientation =
                        {v: 'h', h: 'v'}[contFull.orientation];
                }
                helpers.swapXYData(cont);
            }
            else if(Plots.dataArrayContainers.indexOf(param.parts[0]) !== -1) {
                helpers.manageArrayContainers(param, newVal, undoit);
                flags.docalc = true;
            }
            // all the other ones, just modify that one attribute
            else param.set(newVal);

        }

        // swap the data attributes of the relevant x and y axes?
        if(['swapxyaxes', 'orientationaxes'].indexOf(ai) !== -1) {
            Plotly.Axes.swap(gd, traces);
        }

        // swap hovermode if set to "compare x/y data"
        if(ai === 'orientationaxes') {
            var hovermode = Lib.nestedProperty(gd.layout, 'hovermode');
            if(hovermode.get() === 'x') {
                hovermode.set('y');
            } else if(hovermode.get() === 'y') {
                hovermode.set('x');
            }
        }

        // check if we need to call axis type
        if((traces.indexOf(0) !== -1) && (axtypeAttrs.indexOf(ai) !== -1)) {
            Plotly.Axes.clearTypes(gd, traces);
            flags.docalc = true;
        }

        // switching from auto to manual binning or z scaling doesn't
        // actually do anything but change what you see in the styling
        // box. everything else at least needs to apply styles
        if((['autobinx', 'autobiny', 'zauto'].indexOf(ai) === -1) ||
                newVal !== false) {
            flags.dostyle = true;
        }
        if(['colorbar', 'line'].indexOf(param.parts[0]) !== -1 ||
            param.parts[0] === 'marker' && param.parts[1] === 'colorbar') {
            flags.docolorbars = true;
        }

        if(recalcAttrs.indexOf(ai) !== -1) {
            // major enough changes deserve autoscale, autobin, and
            // non-reversed axes so people don't get confused
            if(['orientation', 'type'].indexOf(ai) !== -1) {
                axlist = [];
                for(i = 0; i < traces.length; i++) {
                    var trace = data[traces[i]];

                    if(Registry.traceIs(trace, 'cartesian')) {
                        addToAxlist(trace.xaxis || 'x');
                        addToAxlist(trace.yaxis || 'y');

                        if(ai === 'type') {
                            doextra(['autobinx', 'autobiny'], true, i);
                        }
                    }
                }

                doextra(axlist.map(autorangeAttr), true, 0);
                doextra(axlist.map(rangeAttr), [0, 1], 0);
            }
            flags.docalc = true;
        }
        else if(replotAttrs.indexOf(ai) !== -1) flags.doplot = true;
        else if(autorangeAttrs.indexOf(ai) !== -1) flags.docalcAutorange = true;
    }

    // do we need to force a recalc?
    Plotly.Axes.list(gd).forEach(function(ax) {
        if(ax.autorange) flags.autorangeOn = true;
    });

    // check axes we've flagged for possible deletion
    // flagAxForDelete is a hash so we can make sure we only get each axis once
    var axListForDelete = Object.keys(flagAxForDelete);
    axisLoop:
    for(i = 0; i < axListForDelete.length; i++) {
        var axId = axListForDelete[i],
            axLetter = axId.charAt(0),
            axAttr = axLetter + 'axis';

        for(var j = 0; j < data.length; j++) {
            if(Registry.traceIs(data[j], 'cartesian') &&
                    (data[j][axAttr] || axLetter) === axId) {
                continue axisLoop;
            }
        }

        // no data on this axis - delete it.
        doextra('LAYOUT' + Plotly.Axes.id2name(axId), null, 0);
    }

    // combine a few flags together;
    if(flags.docalc || (flags.docalcAutorange && flags.autorangeOn)) {
        flags.clearCalc = true;
    }
    if(flags.docalc || flags.doplot || flags.docalcAutorange) {
        flags.fullReplot = true;
    }

    return {
        flags: flags,
        undoit: undoit,
        redoit: redoit,
        traces: traces,
        eventData: Lib.extendDeepNoArrays([], [redoit, traces])
    };
}

/**
 * relayout: update layout attributes of an existing plot
 *
 * Can be called two ways:
 *
 * Signature 1:
 * @param {String | HTMLDivElement} gd
 *  the id or dom element of the graph container div
 * @param {String} astr
 *  attribute string (like `'xaxis.range[0]'`) to update
 * @param {*} val
 *  value to give this attribute
 *
 * Signature 2:
 * @param {String | HTMLDivElement} gd
 *  (as in signature 1)
 * @param {Object} aobj
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  allows setting multiple attributes simultaneously
 */
Plotly.relayout = function relayout(gd, astr, val) {
    gd = helpers.getGraphDiv(gd);
    helpers.clearPromiseQueue(gd);

    if(gd.framework && gd.framework.isPolar) {
        return Promise.resolve(gd);
    }

    var aobj = {};
    if(typeof astr === 'string') aobj[astr] = val;
    else if(Lib.isPlainObject(astr)) aobj = astr;
    else {
        Lib.warn('Relayout fail.', astr, val);
        return Promise.reject();
    }

    if(Object.keys(aobj).length) gd.changed = true;

    var specs = _relayout(gd, aobj),
        flags = specs.flags;

    // clear calcdata if required
    if(flags.docalc) gd.calcdata = undefined;

    // fill in redraw sequence
    var seq = [];

    if(flags.layoutReplot) {
        seq.push(subroutines.layoutReplot);
    }
    else if(Object.keys(aobj).length) {
        seq.push(Plots.previousPromises);
        Plots.supplyDefaults(gd);

        if(flags.dolegend) seq.push(subroutines.doLegend);
        if(flags.dolayoutstyle) seq.push(subroutines.layoutStyles);
        if(flags.doticks) seq.push(subroutines.doTicksRelayout);
        if(flags.domodebar) seq.push(subroutines.doModeBar);
    }

    Queue.add(gd,
        relayout, [gd, specs.undoit],
        relayout, [gd, specs.redoit]
    );

    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve(gd);

    return plotDone.then(function() {
        gd.emit('plotly_relayout', specs.eventData);
        return gd;
    });
};

function _relayout(gd, aobj) {
    var layout = gd.layout,
        fullLayout = gd._fullLayout,
        keys = Object.keys(aobj),
        axes = Plotly.Axes.list(gd),
        i;

    // look for 'allaxes', split out into all axes
    // in case of 3D the axis are nested within a scene which is held in _id
    for(i = 0; i < keys.length; i++) {
        if(keys[i].indexOf('allaxes') === 0) {
            for(var j = 0; j < axes.length; j++) {
                var scene = axes[j]._id.substr(1),
                    axisAttr = (scene.indexOf('scene') !== -1) ? (scene + '.') : '',
                    newkey = keys[i].replace('allaxes', axisAttr + axes[j]._name);

                if(!aobj[newkey]) aobj[newkey] = aobj[keys[i]];
            }

            delete aobj[keys[i]];
        }
    }

    // initialize flags
    var flags = {
        dolegend: false,
        doticks: false,
        dolayoutstyle: false,
        doplot: false,
        docalc: false,
        domodebar: false,
        layoutReplot: false
    };

    // copies of the change (and previous values of anything affected)
    // for the undo / redo queue
    var redoit = {},
        undoit = {};

    // for attrs that interact (like scales & autoscales), save the
    // old vals before making the change
    // val=undefined will not set a value, just record what the value was.
    // attr can be an array to set several at once (all to the same val)
    function doextra(attr, val) {
        if(Array.isArray(attr)) {
            attr.forEach(function(a) { doextra(a, val); });
            return;
        }
        // quit if explicitly setting this elsewhere
        if(attr in aobj) return;

        var p = Lib.nestedProperty(layout, attr);
        if(!(attr in undoit)) undoit[attr] = p.get();
        if(val !== undefined) p.set(val);
    }

    // for editing annotations or shapes - is it on autoscaled axes?
    function refAutorange(obj, axletter) {
        var axName = Plotly.Axes.id2name(obj[axletter + 'ref'] || axletter);
        return (fullLayout[axName] || {}).autorange;
    }

    // alter gd.layout
    for(var ai in aobj) {
        var p = Lib.nestedProperty(layout, ai),
            vi = aobj[ai],
            plen = p.parts.length,
            // p.parts may end with an index integer if the property is an array
            pend = typeof p.parts[plen - 1] === 'string' ? (plen - 1) : (plen - 2),
            // last property in chain (leaf node)
            pleaf = p.parts[pend],
            // leaf plus immediate parent
            pleafPlus = p.parts[pend - 1] + '.' + pleaf,
            // trunk nodes (everything except the leaf)
            ptrunk = p.parts.slice(0, pend).join('.'),
            parentIn = Lib.nestedProperty(gd.layout, ptrunk).get(),
            parentFull = Lib.nestedProperty(fullLayout, ptrunk).get();

        if(vi === undefined) continue;

        redoit[ai] = vi;

        // axis reverse is special - it is its own inverse
        // op and has no flag.
        undoit[ai] = (pleaf === 'reverse') ? vi : p.get();

        // Setting width or height to null must reset the graph's width / height
        // back to its initial value as computed during the first pass in Plots.plotAutoSize.
        //
        // To do so, we must manually set them back here using the _initialAutoSize cache.
        if(['width', 'height'].indexOf(ai) !== -1 && vi === null) {
            gd._fullLayout[ai] = gd._initialAutoSize[ai];
        }
        // check autorange vs range
        else if(pleafPlus.match(/^[xyz]axis[0-9]*\.range(\[[0|1]\])?$/)) {
            doextra(ptrunk + '.autorange', false);
        }
        else if(pleafPlus.match(/^[xyz]axis[0-9]*\.autorange$/)) {
            doextra([ptrunk + '.range[0]', ptrunk + '.range[1]'],
                undefined);
        }
        else if(pleafPlus.match(/^aspectratio\.[xyz]$/)) {
            doextra(p.parts[0] + '.aspectmode', 'manual');
        }
        else if(pleafPlus.match(/^aspectmode$/)) {
            doextra([ptrunk + '.x', ptrunk + '.y', ptrunk + '.z'], undefined);
        }
        else if(pleaf === 'tick0' || pleaf === 'dtick') {
            doextra(ptrunk + '.tickmode', 'linear');
        }
        else if(pleaf === 'tickmode') {
            doextra([ptrunk + '.tick0', ptrunk + '.dtick'], undefined);
        }
        else if(/[xy]axis[0-9]*?$/.test(pleaf) && !Object.keys(vi || {}).length) {
            flags.docalc = true;
        }
        else if(/[xy]axis[0-9]*\.categoryorder$/.test(pleafPlus)) {
            flags.docalc = true;
        }
        else if(/[xy]axis[0-9]*\.categoryarray/.test(pleafPlus)) {
            flags.docalc = true;
        }

        if(pleafPlus.indexOf('rangeslider') !== -1) {
            flags.docalc = true;
        }

        // toggling log without autorange: need to also recalculate ranges
        // logical XOR (ie are we toggling log)
        if(pleaf === 'type' && ((parentFull.type === 'log') !== (vi === 'log'))) {
            var ax = parentIn;

            if(!ax || !ax.range) {
                doextra(ptrunk + '.autorange', true);
            }
            else if(!parentFull.autorange) {
                var r0 = ax.range[0],
                    r1 = ax.range[1];
                if(vi === 'log') {
                    // if both limits are negative, autorange
                    if(r0 <= 0 && r1 <= 0) {
                        doextra(ptrunk + '.autorange', true);
                    }
                    // if one is negative, set it 6 orders below the other.
                    if(r0 <= 0) r0 = r1 / 1e6;
                    else if(r1 <= 0) r1 = r0 / 1e6;
                    // now set the range values as appropriate
                    doextra(ptrunk + '.range[0]', Math.log(r0) / Math.LN10);
                    doextra(ptrunk + '.range[1]', Math.log(r1) / Math.LN10);
                }
                else {
                    doextra(ptrunk + '.range[0]', Math.pow(10, r0));
                    doextra(ptrunk + '.range[1]', Math.pow(10, r1));
                }
            }
            else if(vi === 'log') {
                // just make sure the range is positive and in the right
                // order, it'll get recalculated later
                ax.range = (ax.range[1] > ax.range[0]) ? [1, 2] : [2, 1];
            }
        }

        // handle axis reversal explicitly, as there's no 'reverse' flag
        if(pleaf === 'reverse') {
            if(parentIn.range) parentIn.range.reverse();
            else {
                doextra(ptrunk + '.autorange', true);
                parentIn.range = [1, 0];
            }

            if(parentFull.autorange) flags.docalc = true;
            else flags.doplot = true;
        }
        // send annotation and shape mods one-by-one through Annotations.draw(),
        // don't set via nestedProperty
        // that's because add and remove are special
        else if(p.parts[0] === 'annotations' || p.parts[0] === 'shapes') {
            var objNum = p.parts[1],
                objType = p.parts[0],
                objList = layout[objType] || [],
                obji = objList[objNum] || {};

            // if p.parts is just an annotation number, and val is either
            // 'add' or an entire annotation to add, the undo is 'remove'
            // if val is 'remove' then undo is the whole annotation object
            if(p.parts.length === 2) {

                // new API, remove annotation / shape with `null`
                if(vi === null) aobj[ai] = 'remove';

                if(aobj[ai] === 'add' || Lib.isPlainObject(aobj[ai])) {
                    undoit[ai] = 'remove';
                }
                else if(aobj[ai] === 'remove') {
                    if(objNum === -1) {
                        undoit[objType] = objList;
                        delete undoit[ai];
                    }
                    else undoit[ai] = obji;
                }
                else Lib.log('???', aobj);
            }

            if((refAutorange(obji, 'x') || refAutorange(obji, 'y')) &&
                    !Lib.containsAny(ai, ['color', 'opacity', 'align', 'dash'])) {
                flags.docalc = true;
            }

            // TODO: combine all edits to a given annotation / shape into one call
            // as it is we get separate calls for x and y (or ax and ay) on move

            var drawOne = Registry.getComponentMethod(objType, 'drawOne');
            drawOne(gd, objNum, p.parts.slice(2).join('.'), aobj[ai]);
            delete aobj[ai];
        }
        else if(
            Plots.layoutArrayContainers.indexOf(p.parts[0]) !== -1 ||
            (p.parts[0] === 'mapbox' && p.parts[1] === 'layers')
        ) {
            helpers.manageArrayContainers(p, vi, undoit);
            flags.doplot = true;
        }
        // alter gd.layout
        else {
            var pp1 = String(p.parts[1] || '');
            // check whether we can short-circuit a full redraw
            // 3d or geo at this point just needs to redraw.
            if(p.parts[0].indexOf('scene') === 0) flags.doplot = true;
            else if(p.parts[0].indexOf('geo') === 0) flags.doplot = true;
            else if(p.parts[0].indexOf('ternary') === 0) flags.doplot = true;
            else if(ai === 'paper_bgcolor') flags.doplot = true;
            else if(fullLayout._has('gl2d') &&
                (ai.indexOf('axis') !== -1 || p.parts[0] === 'plot_bgcolor')
            ) flags.doplot = true;
            else if(ai === 'hiddenlabels') flags.docalc = true;
            else if(p.parts[0].indexOf('legend') !== -1) flags.dolegend = true;
            else if(ai.indexOf('title') !== -1) flags.doticks = true;
            else if(p.parts[0].indexOf('bgcolor') !== -1) flags.dolayoutstyle = true;
            else if(p.parts.length > 1 &&
                    Lib.containsAny(pp1, ['tick', 'exponent', 'grid', 'zeroline'])) {
                flags.doticks = true;
            }
            else if(ai.indexOf('.linewidth') !== -1 &&
                    ai.indexOf('axis') !== -1) {
                flags.doticks = flags.dolayoutstyle = true;
            }
            else if(p.parts.length > 1 && pp1.indexOf('line') !== -1) {
                flags.dolayoutstyle = true;
            }
            else if(p.parts.length > 1 && pp1 === 'mirror') {
                flags.doticks = flags.dolayoutstyle = true;
            }
            else if(ai === 'margin.pad') {
                flags.doticks = flags.dolayoutstyle = true;
            }
            else if(p.parts[0] === 'margin' ||
                    p.parts[1] === 'autorange' ||
                    p.parts[1] === 'rangemode' ||
                    p.parts[1] === 'type' ||
                    p.parts[1] === 'domain' ||
                    ai.indexOf('calendar') !== -1 ||
                    ai.match(/^(bar|box|font)/)) {
                flags.docalc = true;
            }
            /*
             * hovermode and dragmode don't need any redrawing, since they just
             * affect reaction to user input, everything else, assume full replot.
             * height, width, autosize get dealt with below. Except for the case of
             * of subplots - scenes - which require scene.updateFx to be called.
             */
            else if(['hovermode', 'dragmode'].indexOf(ai) !== -1) flags.domodebar = true;
            else if(['hovermode', 'dragmode', 'height',
                'width', 'autosize'].indexOf(ai) === -1) {
                flags.doplot = true;
            }

            p.set(vi);
        }
    }

    var oldWidth = gd._fullLayout.width,
        oldHeight = gd._fullLayout.height;

    // coerce the updated layout
    Plots.supplyDefaults(gd);

    // calculate autosizing
    if(gd.layout.autosize) Plots.plotAutoSize(gd, gd.layout, gd._fullLayout);

    // avoid unnecessary redraws
    var hasSizechanged = aobj.height || aobj.width ||
        (gd._fullLayout.width !== oldWidth) ||
        (gd._fullLayout.height !== oldHeight);

    if(hasSizechanged) flags.docalc = true;

    if(flags.doplot || flags.docalc) {
        flags.layoutReplot = true;
    }

    // now all attribute mods are done, as are
    // redo and undo so we can save them

    return {
        flags: flags,
        undoit: undoit,
        redoit: redoit,
        eventData: Lib.extendDeep({}, redoit)
    };
}

/**
 * update: update trace and layout attributes of an existing plot
 *
 * @param {String | HTMLDivElement} gd
 *  the id or DOM element of the graph container div
 * @param {Object} traceUpdate
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  corresponding to updates in the plot's traces
 * @param {Object} layoutUpdate
 *  attribute object `{astr1: val1, astr2: val2 ...}`
 *  corresponding to updates in the plot's layout
 * @param {Number[] | Number} [traces]
 *  integer or array of integers for the traces to alter (all if omitted)
 *
 */
Plotly.update = function update(gd, traceUpdate, layoutUpdate, traces) {
    gd = helpers.getGraphDiv(gd);
    helpers.clearPromiseQueue(gd);

    if(gd.framework && gd.framework.isPolar) {
        return Promise.resolve(gd);
    }

    if(!Lib.isPlainObject(traceUpdate)) traceUpdate = {};
    if(!Lib.isPlainObject(layoutUpdate)) layoutUpdate = {};

    if(Object.keys(traceUpdate).length) gd.changed = true;
    if(Object.keys(layoutUpdate).length) gd.changed = true;

    var restyleSpecs = _restyle(gd, traceUpdate, traces),
        restyleFlags = restyleSpecs.flags;

    var relayoutSpecs = _relayout(gd, layoutUpdate),
        relayoutFlags = relayoutSpecs.flags;

    // clear calcdata if required
    if(restyleFlags.clearCalc || relayoutFlags.docalc) gd.calcdata = undefined;

    // fill in redraw sequence
    var seq = [];

    if(restyleFlags.fullReplot && relayoutFlags.layoutReplot) {
        var data = gd.data,
            layout = gd.layout;

        // clear existing data/layout on gd
        // so that Plotly.plot doesn't try to extend them
        gd.data = undefined;
        gd.layout = undefined;

        seq.push(function() { return Plotly.plot(gd, data, layout); });
    }
    else if(restyleFlags.fullReplot) {
        seq.push(Plotly.plot);
    }
    else if(relayoutFlags.layoutReplot) {
        seq.push(subroutines.layoutReplot);
    }
    else {
        seq.push(Plots.previousPromises);
        Plots.supplyDefaults(gd);

        if(restyleFlags.dostyle) seq.push(subroutines.doTraceStyle);
        if(restyleFlags.docolorbars) seq.push(subroutines.doColorBars);
        if(relayoutFlags.dolegend) seq.push(subroutines.doLegend);
        if(relayoutFlags.dolayoutstyle) seq.push(subroutines.layoutStyles);
        if(relayoutFlags.doticks) seq.push(subroutines.doTicksRelayout);
        if(relayoutFlags.domodebar) seq.push(subroutines.doModeBar);
    }

    Queue.add(gd,
        update, [gd, restyleSpecs.undoit, relayoutSpecs.undoit, restyleSpecs.traces],
        update, [gd, restyleSpecs.redoit, relayoutSpecs.redoit, restyleSpecs.traces]
    );

    var plotDone = Lib.syncOrAsync(seq, gd);
    if(!plotDone || !plotDone.then) plotDone = Promise.resolve(gd);

    return plotDone.then(function() {
        gd.emit('plotly_update', {
            data: restyleSpecs.eventData,
            layout: relayoutSpecs.eventData
        });

        return gd;
    });
};

/**
 * Animate to a frame, sequence of frame, frame group, or frame definition
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 *
 * @param {string or object or array of strings or array of objects} frameOrGroupNameOrFrameList
 *      a single frame, array of frames, or group to which to animate. The intent is
 *      inferred by the type of the input. Valid inputs are:
 *
 *      - string, e.g. 'groupname': animate all frames of a given `group` in the order
 *            in which they are defined via `Plotly.addFrames`.
 *
 *      - array of strings, e.g. ['frame1', frame2']: a list of frames by name to which
 *            to animate in sequence
 *
 *      - object: {data: ...}: a frame definition to which to animate. The frame is not
 *            and does not need to be added via `Plotly.addFrames`. It may contain any of
 *            the properties of a frame, including `data`, `layout`, and `traces`. The
 *            frame is used as provided and does not use the `baseframe` property.
 *
 *      - array of objects, e.g. [{data: ...}, {data: ...}]: a list of frame objects,
 *            each following the same rules as a single `object`.
 *
 * @param {object} animationOpts
 *      configuration for the animation
 */
Plotly.animate = function(gd, frameOrGroupNameOrFrameList, animationOpts) {
    gd = helpers.getGraphDiv(gd);

    if(!Lib.isPlotDiv(gd)) {
        throw new Error(
            'This element is not a Plotly plot: ' + gd + '. It\'s likely that you\'ve failed ' +
            'to create a plot before animating it. For more details, see ' +
            'https://plot.ly/javascript/animations/'
        );
    }

    var trans = gd._transitionData;

    // This is the queue of frames that will be animated as soon as possible. They
    // are popped immediately upon the *start* of a transition:
    if(!trans._frameQueue) {
        trans._frameQueue = [];
    }

    animationOpts = Plots.supplyAnimationDefaults(animationOpts);
    var transitionOpts = animationOpts.transition;
    var frameOpts = animationOpts.frame;

    // Since frames are popped immediately, an empty queue only means all frames have
    // *started* to transition, not that the animation is complete. To solve that,
    // track a separate counter that increments at the same time as frames are added
    // to the queue, but decrements only when the transition is complete.
    if(trans._frameWaitingCnt === undefined) {
        trans._frameWaitingCnt = 0;
    }

    function getTransitionOpts(i) {
        if(Array.isArray(transitionOpts)) {
            if(i >= transitionOpts.length) {
                return transitionOpts[0];
            } else {
                return transitionOpts[i];
            }
        } else {
            return transitionOpts;
        }
    }

    function getFrameOpts(i) {
        if(Array.isArray(frameOpts)) {
            if(i >= frameOpts.length) {
                return frameOpts[0];
            } else {
                return frameOpts[i];
            }
        } else {
            return frameOpts;
        }
    }

    // Execute a callback after the wrapper function has been called n times.
    // This is used to defer the resolution until a transition has resovled *and*
    // the frame has completed. If it's not done this way, then we get a race
    // condition in which the animation might resolve before a transition is complete
    // or vice versa.
    function callbackOnNthTime(cb, n) {
        var cnt = 0;
        return function() {
            if(cb && ++cnt === n) {
                return cb();
            }
        };
    }

    return new Promise(function(resolve, reject) {
        function discardExistingFrames() {
            if(trans._frameQueue.length === 0) {
                return;
            }

            while(trans._frameQueue.length) {
                var next = trans._frameQueue.pop();
                if(next.onInterrupt) {
                    next.onInterrupt();
                }
            }

            gd.emit('plotly_animationinterrupted', []);
        }

        function queueFrames(frameList) {
            if(frameList.length === 0) return;

            for(var i = 0; i < frameList.length; i++) {
                var computedFrame;

                if(frameList[i].type === 'byname') {
                    // If it's a named frame, compute it:
                    computedFrame = Plots.computeFrame(gd, frameList[i].name);
                } else {
                    // Otherwise we must have been given a simple object, so treat
                    // the input itself as the computed frame.
                    computedFrame = frameList[i].data;
                }

                var frameOpts = getFrameOpts(i);
                var transitionOpts = getTransitionOpts(i);

                // It doesn't make much sense for the transition duration to be greater than
                // the frame duration, so limit it:
                transitionOpts.duration = Math.min(transitionOpts.duration, frameOpts.duration);

                var nextFrame = {
                    frame: computedFrame,
                    name: frameList[i].name,
                    frameOpts: frameOpts,
                    transitionOpts: transitionOpts,
                };
                if(i === frameList.length - 1) {
                    // The last frame in this .animate call stores the promise resolve
                    // and reject callbacks. This is how we ensure that the animation
                    // loop (which may exist as a result of a *different* .animate call)
                    // still resolves or rejecdts this .animate call's promise. once it's
                    // complete.
                    nextFrame.onComplete = callbackOnNthTime(resolve, 2);
                    nextFrame.onInterrupt = reject;
                }

                trans._frameQueue.push(nextFrame);
            }

            // Set it as never having transitioned to a frame. This will cause the animation
            // loop to immediately transition to the next frame (which, for immediate mode,
            // is the first frame in the list since all others would have been discarded
            // below)
            if(animationOpts.mode === 'immediate') {
                trans._lastFrameAt = -Infinity;
            }

            // Only it's not already running, start a RAF loop. This could be avoided in the
            // case that there's only one frame, but it significantly complicated the logic
            // and only sped things up by about 5% or so for a lorenz attractor simulation.
            // It would be a fine thing to implement, but the benefit of that optimization
            // doesn't seem worth the extra complexity.
            if(!trans._animationRaf) {
                beginAnimationLoop();
            }
        }

        function stopAnimationLoop() {
            gd.emit('plotly_animated');

            // Be sure to unset also since it's how we know whether a loop is already running:
            window.cancelAnimationFrame(trans._animationRaf);
            trans._animationRaf = null;
        }

        function nextFrame() {
            if(trans._currentFrame && trans._currentFrame.onComplete) {
                // Execute the callback and unset it to ensure it doesn't
                // accidentally get called twice
                trans._currentFrame.onComplete();
            }

            var newFrame = trans._currentFrame = trans._frameQueue.shift();

            if(newFrame) {
                // Since it's sometimes necessary to do deep digging into frame data,
                // we'll consider it not 100% impossible for nulls or numbers to sneak through,
                // so check when casting the name, just to be absolutely certain:
                var stringName = newFrame.name ? newFrame.name.toString() : null;
                gd._fullLayout._currentFrame = stringName;

                trans._lastFrameAt = Date.now();
                trans._timeToNext = newFrame.frameOpts.duration;

                // This is simply called and it's left to .transition to decide how to manage
                // interrupting current transitions. That means we don't need to worry about
                // how it resolves or what happens after this:
                Plots.transition(gd,
                    newFrame.frame.data,
                    newFrame.frame.layout,
                    helpers.coerceTraceIndices(gd, newFrame.frame.traces),
                    newFrame.frameOpts,
                    newFrame.transitionOpts
                ).then(function() {
                    if(newFrame.onComplete) {
                        newFrame.onComplete();
                    }

                });

                gd.emit('plotly_animatingframe', {
                    name: stringName,
                    frame: newFrame.frame,
                    animation: {
                        frame: newFrame.frameOpts,
                        transition: newFrame.transitionOpts,
                    }
                });
            } else {
                // If there are no more frames, then stop the RAF loop:
                stopAnimationLoop();
            }
        }

        function beginAnimationLoop() {
            gd.emit('plotly_animating');

            // If no timer is running, then set last frame = long ago so that the next
            // frame is immediately transitioned:
            trans._lastFrameAt = -Infinity;
            trans._timeToNext = 0;
            trans._runningTransitions = 0;
            trans._currentFrame = null;

            var doFrame = function() {
                // This *must* be requested before nextFrame since nextFrame may decide
                // to cancel it if there's nothing more to animated:
                trans._animationRaf = window.requestAnimationFrame(doFrame);

                // Check if we're ready for a new frame:
                if(Date.now() - trans._lastFrameAt > trans._timeToNext) {
                    nextFrame();
                }
            };

            doFrame();
        }

        // This is an animate-local counter that helps match up option input list
        // items with the particular frame.
        var configCounter = 0;
        function setTransitionConfig(frame) {
            if(Array.isArray(transitionOpts)) {
                if(configCounter >= transitionOpts.length) {
                    frame.transitionOpts = transitionOpts[configCounter];
                } else {
                    frame.transitionOpts = transitionOpts[0];
                }
            } else {
                frame.transitionOpts = transitionOpts;
            }
            configCounter++;
            return frame;
        }

        // Disambiguate what's sort of frames have been received
        var i, frame;
        var frameList = [];
        var allFrames = frameOrGroupNameOrFrameList === undefined || frameOrGroupNameOrFrameList === null;
        var isFrameArray = Array.isArray(frameOrGroupNameOrFrameList);
        var isSingleFrame = !allFrames && !isFrameArray && Lib.isPlainObject(frameOrGroupNameOrFrameList);

        if(isSingleFrame) {
            // In this case, a simple object has been passed to animate.
            frameList.push({
                type: 'object',
                data: setTransitionConfig(Lib.extendFlat({}, frameOrGroupNameOrFrameList))
            });
        } else if(allFrames || ['string', 'number'].indexOf(typeof frameOrGroupNameOrFrameList) !== -1) {
            // In this case, null or undefined has been passed so that we want to
            // animate *all* currently defined frames
            for(i = 0; i < trans._frames.length; i++) {
                frame = trans._frames[i];

                if(!frame) continue;

                if(allFrames || String(frame.group) === String(frameOrGroupNameOrFrameList)) {
                    frameList.push({
                        type: 'byname',
                        name: String(frame.name),
                        data: setTransitionConfig({name: frame.name})
                    });
                }
            }
        } else if(isFrameArray) {
            for(i = 0; i < frameOrGroupNameOrFrameList.length; i++) {
                var frameOrName = frameOrGroupNameOrFrameList[i];
                if(['number', 'string'].indexOf(typeof frameOrName) !== -1) {
                    frameOrName = String(frameOrName);
                    // In this case, there's an array and this frame is a string name:
                    frameList.push({
                        type: 'byname',
                        name: frameOrName,
                        data: setTransitionConfig({name: frameOrName})
                    });
                } else if(Lib.isPlainObject(frameOrName)) {
                    frameList.push({
                        type: 'object',
                        data: setTransitionConfig(Lib.extendFlat({}, frameOrName))
                    });
                }
            }
        }

        // Verify that all of these frames actually exist; return and reject if not:
        for(i = 0; i < frameList.length; i++) {
            frame = frameList[i];
            if(frame.type === 'byname' && !trans._frameHash[frame.data.name]) {
                Lib.warn('animate failure: frame not found: "' + frame.data.name + '"');
                reject();
                return;
            }
        }

        // If the mode is either next or immediate, then all currently queued frames must
        // be dumped and the corresponding .animate promises rejected.
        if(['next', 'immediate'].indexOf(animationOpts.mode) !== -1) {
            discardExistingFrames();
        }

        if(animationOpts.direction === 'reverse') {
            frameList.reverse();
        }

        var currentFrame = gd._fullLayout._currentFrame;
        if(currentFrame && animationOpts.fromcurrent) {
            var idx = -1;
            for(i = 0; i < frameList.length; i++) {
                frame = frameList[i];
                if(frame.type === 'byname' && frame.name === currentFrame) {
                    idx = i;
                    break;
                }
            }

            if(idx > 0 && idx < frameList.length - 1) {
                var filteredFrameList = [];
                for(i = 0; i < frameList.length; i++) {
                    frame = frameList[i];
                    if(frameList[i].type !== 'byname' || i > idx) {
                        filteredFrameList.push(frame);
                    }
                }
                frameList = filteredFrameList;
            }
        }

        if(frameList.length > 0) {
            queueFrames(frameList);
        } else {
            // This is the case where there were simply no frames. It's a little strange
            // since there's not much to do:
            gd.emit('plotly_animated');
            resolve();
        }
    });
};

/**
 * Register new frames
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 *
 * @param {array of objects} frameList
 *      list of frame definitions, in which each object includes any of:
 *      - name: {string} name of frame to add
 *      - data: {array of objects} trace data
 *      - layout {object} layout definition
 *      - traces {array} trace indices
 *      - baseframe {string} name of frame from which this frame gets defaults
 *
 *  @param {array of integers) indices
 *      an array of integer indices matching the respective frames in `frameList`. If not
 *      provided, an index will be provided in serial order. If already used, the frame
 *      will be overwritten.
 */
Plotly.addFrames = function(gd, frameList, indices) {
    gd = helpers.getGraphDiv(gd);

    var numericNameWarningCount = 0;

    if(frameList === null || frameList === undefined) {
        return Promise.resolve();
    }

    if(!Lib.isPlotDiv(gd)) {
        throw new Error(
            'This element is not a Plotly plot: ' + gd + '. It\'s likely that you\'ve failed ' +
            'to create a plot before adding frames. For more details, see ' +
            'https://plot.ly/javascript/animations/'
        );
    }

    var i, frame, j, idx;
    var _frames = gd._transitionData._frames;
    var _hash = gd._transitionData._frameHash;


    if(!Array.isArray(frameList)) {
        throw new Error('addFrames failure: frameList must be an Array of frame definitions' + frameList);
    }

    // Create a sorted list of insertions since we run into lots of problems if these
    // aren't in ascending order of index:
    //
    // Strictly for sorting. Make sure this is guaranteed to never collide with any
    // already-exisisting indices:
    var bigIndex = _frames.length + frameList.length * 2;

    var insertions = [];
    for(i = frameList.length - 1; i >= 0; i--) {
        if(!Lib.isPlainObject(frameList[i])) continue;

        var name = (_hash[frameList[i].name] || {}).name;
        var newName = frameList[i].name;

        if(name && newName && typeof newName === 'number' && _hash[name]) {
            numericNameWarningCount++;

            Lib.warn('addFrames: overwriting frame "' + _hash[name].name +
                '" with a frame whose name of type "number" also equates to "' +
                name + '". This is valid but may potentially lead to unexpected ' +
                'behavior since all plotly.js frame names are stored internally ' +
                'as strings.');

            if(numericNameWarningCount > 5) {
                Lib.warn('addFrames: This API call has yielded too many warnings. ' +
                    'For the rest of this call, further warnings about numeric frame ' +
                    'names will be suppressed.');
            }
        }

        insertions.push({
            frame: Plots.supplyFrameDefaults(frameList[i]),
            index: (indices && indices[i] !== undefined && indices[i] !== null) ? indices[i] : bigIndex + i
        });
    }

    // Sort this, taking note that undefined insertions end up at the end:
    insertions.sort(function(a, b) {
        if(a.index > b.index) return -1;
        if(a.index < b.index) return 1;
        return 0;
    });

    var ops = [];
    var revops = [];
    var frameCount = _frames.length;

    for(i = insertions.length - 1; i >= 0; i--) {
        frame = insertions[i].frame;

        if(typeof frame.name === 'number') {
            Lib.warn('Warning: addFrames accepts frames with numeric names, but the numbers are' +
                'implicitly cast to strings');

        }

        if(!frame.name) {
            // Repeatedly assign a default name, incrementing the counter each time until
            // we get a name that's not in the hashed lookup table:
            while(_hash[(frame.name = 'frame ' + gd._transitionData._counter++)]);
        }

        if(_hash[frame.name]) {
            // If frame is present, overwrite its definition:
            for(j = 0; j < _frames.length; j++) {
                if((_frames[j] || {}).name === frame.name) break;
            }
            ops.push({type: 'replace', index: j, value: frame});
            revops.unshift({type: 'replace', index: j, value: _frames[j]});
        } else {
            // Otherwise insert it at the end of the list:
            idx = Math.max(0, Math.min(insertions[i].index, frameCount));

            ops.push({type: 'insert', index: idx, value: frame});
            revops.unshift({type: 'delete', index: idx});
            frameCount++;
        }
    }

    var undoFunc = Plots.modifyFrames,
        redoFunc = Plots.modifyFrames,
        undoArgs = [gd, revops],
        redoArgs = [gd, ops];

    if(Queue) Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return Plots.modifyFrames(gd, ops);
};

/**
 * Delete frame
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 *
 * @param {array of integers} frameList
 *      list of integer indices of frames to be deleted
 */
Plotly.deleteFrames = function(gd, frameList) {
    gd = helpers.getGraphDiv(gd);

    if(!Lib.isPlotDiv(gd)) {
        throw new Error('This element is not a Plotly plot: ' + gd);
    }

    var i, idx;
    var _frames = gd._transitionData._frames;
    var ops = [];
    var revops = [];

    frameList = frameList.slice(0);
    frameList.sort();

    for(i = frameList.length - 1; i >= 0; i--) {
        idx = frameList[i];
        ops.push({type: 'delete', index: idx});
        revops.unshift({type: 'insert', index: idx, value: _frames[idx]});
    }

    var undoFunc = Plots.modifyFrames,
        redoFunc = Plots.modifyFrames,
        undoArgs = [gd, revops],
        redoArgs = [gd, ops];

    if(Queue) Queue.add(gd, undoFunc, undoArgs, redoFunc, redoArgs);

    return Plots.modifyFrames(gd, ops);
};

/**
 * Purge a graph container div back to its initial pre-Plotly.plot state
 *
 * @param {string id or DOM element} gd
 *      the id or DOM element of the graph container div
 */
Plotly.purge = function purge(gd) {
    gd = helpers.getGraphDiv(gd);

    var fullLayout = gd._fullLayout || {},
        fullData = gd._fullData || [];

    // remove gl contexts
    Plots.cleanPlot([], {}, fullData, fullLayout);

    // purge properties
    Plots.purge(gd);

    // purge event emitter methods
    Events.purge(gd);

    // remove plot container
    if(fullLayout._container) fullLayout._container.remove();

    delete gd._context;
    delete gd._replotPending;
    delete gd._mouseDownTime;
    delete gd._hmpixcount;
    delete gd._hmlumcount;

    return gd;
};

// -------------------------------------------------------
// makePlotFramework: Create the plot container and axes
// -------------------------------------------------------
function makePlotFramework(gd) {
    var gd3 = d3.select(gd),
        fullLayout = gd._fullLayout;

    // Plot container
    fullLayout._container = gd3.selectAll('.plot-container').data([0]);
    fullLayout._container.enter().insert('div', ':first-child')
        .classed('plot-container', true)
        .classed('plotly', true);

    // Make the svg container
    fullLayout._paperdiv = fullLayout._container.selectAll('.svg-container').data([0]);
    fullLayout._paperdiv.enter().append('div')
        .classed('svg-container', true)
        .style('position', 'relative');

    // Make the graph containers
    // start fresh each time we get here, so we know the order comes out
    // right, rather than enter/exit which can muck up the order
    // TODO: sort out all the ordering so we don't have to
    // explicitly delete anything
    fullLayout._glcontainer = fullLayout._paperdiv.selectAll('.gl-container')
        .data([0]);
    fullLayout._glcontainer.enter().append('div')
        .classed('gl-container', true);

    fullLayout._geocontainer = fullLayout._paperdiv.selectAll('.geo-container')
        .data([0]);
    fullLayout._geocontainer.enter().append('div')
        .classed('geo-container', true);

    fullLayout._paperdiv.selectAll('.main-svg').remove();

    fullLayout._paper = fullLayout._paperdiv.insert('svg', ':first-child')
        .classed('main-svg', true);

    fullLayout._toppaper = fullLayout._paperdiv.append('svg')
        .classed('main-svg', true);

    if(!fullLayout._uid) {
        var otherUids = [];
        d3.selectAll('defs').each(function() {
            if(this.id) otherUids.push(this.id.split('-')[1]);
        });
        fullLayout._uid = Lib.randstr(otherUids);
    }

    fullLayout._paperdiv.selectAll('.main-svg')
        .attr(xmlnsNamespaces.svgAttrs);

    fullLayout._defs = fullLayout._paper.append('defs')
        .attr('id', 'defs-' + fullLayout._uid);

    fullLayout._topdefs = fullLayout._toppaper.append('defs')
        .attr('id', 'topdefs-' + fullLayout._uid);

    fullLayout._draggers = fullLayout._paper.append('g')
        .classed('draglayer', true);

    // lower shape layer
    // (only for shapes to be drawn below the whole plot)
    var layerBelow = fullLayout._paper.append('g')
        .classed('layer-below', true);
    fullLayout._imageLowerLayer = layerBelow.append('g')
        .classed('imagelayer', true);
    fullLayout._shapeLowerLayer = layerBelow.append('g')
        .classed('shapelayer', true);

    // single cartesian layer for the whole plot
    fullLayout._cartesianlayer = fullLayout._paper.append('g').classed('cartesianlayer', true);

    // single ternary layer for the whole plot
    fullLayout._ternarylayer = fullLayout._paper.append('g').classed('ternarylayer', true);

    // upper shape layer
    // (only for shapes to be drawn above the whole plot, including subplots)
    var layerAbove = fullLayout._paper.append('g')
        .classed('layer-above', true);
    fullLayout._imageUpperLayer = layerAbove.append('g')
        .classed('imagelayer', true);
    fullLayout._shapeUpperLayer = layerAbove.append('g')
        .classed('shapelayer', true);

    // single pie layer for the whole plot
    fullLayout._pielayer = fullLayout._paper.append('g').classed('pielayer', true);

    // fill in image server scrape-svg
    fullLayout._glimages = fullLayout._paper.append('g').classed('glimages', true);
    fullLayout._geoimages = fullLayout._paper.append('g').classed('geoimages', true);

    // lastly info (legend, annotations) and hover layers go on top
    // these are in a different svg element normally, but get collapsed into a single
    // svg when exporting (after inserting 3D)
    fullLayout._infolayer = fullLayout._toppaper.append('g').classed('infolayer', true);
    fullLayout._zoomlayer = fullLayout._toppaper.append('g').classed('zoomlayer', true);
    fullLayout._hoverlayer = fullLayout._toppaper.append('g').classed('hoverlayer', true);

    gd.emit('plotly_framework');
}

},{"../components/drawing":533,"../components/errorbars":539,"../constants/xmlns_namespaces":595,"../lib":610,"../lib/events":602,"../lib/queue":619,"../lib/svg_text_utils":625,"../plotly":637,"../plots/cartesian/graph_interact":649,"../plots/plots":702,"../plots/polar":705,"../registry":717,"./helpers":628,"./subroutines":634,"d3":86,"fast-isnumeric":97}],630:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/* eslint-disable no-console */

/**
 * This will be transferred over to gd and overridden by
 * config args to Plotly.plot.
 *
 * The defaults are the appropriate settings for plotly.js,
 * so we get the right experience without any config argument.
 */

module.exports = {

    // no interactivity, for export or image generation
    staticPlot: false,

    // we can edit titles, move annotations, etc
    editable: false,

    // DO autosize once regardless of layout.autosize
    // (use default width or height values otherwise)
    autosizable: false,

    // set the length of the undo/redo queue
    queueLength: 0,

    // if we DO autosize, do we fill the container or the screen?
    fillFrame: false,

    // if we DO autosize, set the frame margins in percents of plot size
    frameMargins: 0,

    // mousewheel or two-finger scroll zooms the plot
    scrollZoom: false,

    // double click interaction (false, 'reset', 'autosize' or 'reset+autosize')
    doubleClick: 'reset+autosize',

    // new users see some hints about interactivity
    showTips: true,

    // link to open this plot in plotly
    showLink: false,

    // if we show a link, does it contain data or just link to a plotly file?
    sendData: true,

    // text appearing in the sendData link
    linkText: 'Edit chart',

    // false or function adding source(s) to linkText <text>
    showSources: false,

    // display the mode bar (true, false, or 'hover')
    displayModeBar: 'hover',

    // remove mode bar button by name
    // (see ./components/modebar/buttons.js for the list of names)
    modeBarButtonsToRemove: [],

    // add mode bar button using config objects
    // (see ./components/modebar/buttons.js for list of arguments)
    modeBarButtonsToAdd: [],

    // fully custom mode bar buttons as nested array,
    // where the outer arrays represents button groups, and
    // the inner arrays have buttons config objects or names of default buttons
    // (see ./components/modebar/buttons.js for more info)
    modeBarButtons: false,

    // add the plotly logo on the end of the mode bar
    displaylogo: true,

    // increase the pixel ratio for Gl plot images
    plotGlPixelRatio: 2,

    // function to add the background color to a different container
    // or 'opaque' to ensure there's white behind it
    setBackground: defaultSetBackground,

    // URL to topojson files used in geo charts
    topojsonURL: 'https://cdn.plot.ly/',

    // Mapbox access token (required to plot mapbox trace types)
    // If using an Mapbox Atlas server, set this option to '',
    // so that plotly.js won't attempt to authenticate to the public Mapbox server.
    mapboxAccessToken: null,

    // Turn all console logging on or off (errors will be thrown)
    // This should ONLY be set via Plotly.setPlotConfig
    logging: false,

    // Set global transform to be applied to all traces with no
    // specification needed
    globalTransforms: []
};

// where and how the background gets set can be overridden by context
// so we define the default (plotly.js) behavior here
function defaultSetBackground(gd, bgColor) {
    try {
        gd._fullLayout._paper.style('background', bgColor);
    }
    catch(e) {
        if(module.exports.logging > 0) {
            console.error(e);
        }
    }
}

},{}],631:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../registry');
var Lib = require('../lib');

var baseAttributes = require('../plots/attributes');
var baseLayoutAttributes = require('../plots/layout_attributes');
var frameAttributes = require('../plots/frame_attributes');
var animationAttributes = require('../plots/animation_attributes');

// polar attributes are not part of the Registry yet
var polarAreaAttrs = require('../plots/polar/area_attributes');
var polarAxisAttrs = require('../plots/polar/axis_attributes');

var extendFlat = Lib.extendFlat;
var extendDeep = Lib.extendDeep;

var IS_SUBPLOT_OBJ = '_isSubplotObj';
var IS_LINKED_TO_ARRAY = '_isLinkedToArray';
var DEPRECATED = '_deprecated';
var UNDERSCORE_ATTRS = [IS_SUBPLOT_OBJ, IS_LINKED_TO_ARRAY, DEPRECATED];

exports.IS_SUBPLOT_OBJ = IS_SUBPLOT_OBJ;
exports.IS_LINKED_TO_ARRAY = IS_LINKED_TO_ARRAY;
exports.DEPRECATED = DEPRECATED;
exports.UNDERSCORE_ATTRS = UNDERSCORE_ATTRS;

/** Outputs the full plotly.js plot schema
 *
 * @return {object}
 *  - defs
 *  - traces
 *  - layout
 *  - transforms
 *  - frames
 *  - animations
 *  - config (coming soon ...)
 */
exports.get = function() {
    var traces = {};

    Registry.allTypes.concat('area').forEach(function(type) {
        traces[type] = getTraceAttributes(type);
    });

    var transforms = {};

    Object.keys(Registry.transformsRegistry).forEach(function(type) {
        transforms[type] = getTransformAttributes(type);
    });

    return {
        defs: {
            valObjects: Lib.valObjects,
            metaKeys: UNDERSCORE_ATTRS.concat(['description', 'role'])
        },

        traces: traces,
        layout: getLayoutAttributes(),

        transforms: transforms,

        frames: formatAttributes(frameAttributes),
        animation: formatAttributes(animationAttributes)
    };
};

/**
 * Crawl the attribute tree, recursively calling a callback function
 *
 * @param {object} attrs
 *  The node of the attribute tree (e.g. the root) from which recursion originates
 * @param {Function} callback
 *  A callback function with the signature:
 *          @callback callback
 *          @param {object} attr an attribute
 *          @param {String} attrName name string
 *          @param {object[]} attrs all the attributes
 *          @param {Number} level the recursion level, 0 at the root
 * @param {Number} [specifiedLevel]
 *  The level in the tree, in order to let the callback function detect descend or backtrack,
 *  typically unsupplied (implied 0), just used by the self-recursive call.
 *  The necessity arises because the tree traversal is not controlled by callback return values.
 *  The decision to not use callback return values for controlling tree pruning arose from
 *  the goal of keeping the crawler backwards compatible. Observe that one of the pruning conditions
 *  precedes the callback call.
 *
 * @return {object} transformOut
 *  copy of transformIn that contains attribute defaults
 */
exports.crawl = function(attrs, callback, specifiedLevel) {
    var level = specifiedLevel || 0;

    Object.keys(attrs).forEach(function(attrName) {
        var attr = attrs[attrName];

        if(UNDERSCORE_ATTRS.indexOf(attrName) !== -1) return;

        callback(attr, attrName, attrs, level);

        if(exports.isValObject(attr)) return;

        if(Lib.isPlainObject(attr)) exports.crawl(attr, callback, level + 1);
    });
};

/** Is object a value object (or a container object)?
 *
 * @param {object} obj
 * @return {boolean}
 *  returns true for a valid value object and
 *  false for tree nodes in the attribute hierarchy
 */
exports.isValObject = function(obj) {
    return obj && obj.valType !== undefined;
};

/**
 * Find all data array attributes in a given trace object - including
 * `arrayOk` attributes.
 *
 * @param {object} trace
 *  full trace object that contains a reference to `_module.attributes`
 *
 * @return {array} arrayAttributes
 *  list of array attributes for the given trace
 */
exports.findArrayAttributes = function(trace) {
    var arrayAttributes = [],
        stack = [];

    function callback(attr, attrName, attrs, level) {
        stack = stack.slice(0, level).concat([attrName]);

        var splittableAttr = attr && (attr.valType === 'data_array' || attr.arrayOk === true);
        if(!splittableAttr) return;

        var astr = toAttrString(stack);
        var val = Lib.nestedProperty(trace, astr).get();
        if(!Array.isArray(val)) return;

        arrayAttributes.push(astr);
    }

    function toAttrString(stack) {
        return stack.join('.');
    }

    exports.crawl(trace._module.attributes, callback);

    if(trace.transforms) {
        var transforms = trace.transforms;

        for(var i = 0; i < transforms.length; i++) {
            var transform = transforms[i];

            stack = ['transforms[' + i + ']'];

            exports.crawl(transform._module.attributes, callback, 1);
        }
    }

    // Look into the fullInput module attributes for array attributes
    // to make sure that 'custom' array attributes are detected.
    //
    // At the moment, we need this block to make sure that
    // ohlc and candlestick 'open', 'high', 'low', 'close' can be
    // used with filter ang groupby transforms.
    if(trace._fullInput) {
        exports.crawl(trace._fullInput._module.attributes, callback);

        arrayAttributes = Lib.filterUnique(arrayAttributes);
    }

    return arrayAttributes;
};

function getTraceAttributes(type) {
    var _module, basePlotModule;

    if(type === 'area') {
        _module = { attributes: polarAreaAttrs };
        basePlotModule = {};
    }
    else {
        _module = Registry.modules[type]._module,
        basePlotModule = _module.basePlotModule;
    }

    var attributes = {};

    // make 'type' the first attribute in the object
    attributes.type = null;

    // base attributes (same for all trace types)
    extendDeep(attributes, baseAttributes);

    // module attributes
    extendDeep(attributes, _module.attributes);

    // subplot attributes
    if(basePlotModule.attributes) {
        extendDeep(attributes, basePlotModule.attributes);
    }

    // add registered components trace attributes
    Object.keys(Registry.componentsRegistry).forEach(function(k) {
        var _module = Registry.componentsRegistry[k];

        if(_module.schema && _module.schema.traces && _module.schema.traces[type]) {
            Object.keys(_module.schema.traces[type]).forEach(function(v) {
                insertAttrs(attributes, _module.schema.traces[type][v], v);
            });
        }
    });

    // 'type' gets overwritten by baseAttributes; reset it here
    attributes.type = type;

    var out = {
        meta: _module.meta || {},
        attributes: formatAttributes(attributes),
    };

    // trace-specific layout attributes
    if(_module.layoutAttributes) {
        var layoutAttributes = {};

        extendDeep(layoutAttributes, _module.layoutAttributes);
        out.layoutAttributes = formatAttributes(layoutAttributes);
    }

    return out;
}

function getLayoutAttributes() {
    var layoutAttributes = {};

    // global layout attributes
    extendDeep(layoutAttributes, baseLayoutAttributes);

    // add base plot module layout attributes
    Object.keys(Registry.subplotsRegistry).forEach(function(k) {
        var _module = Registry.subplotsRegistry[k];

        if(!_module.layoutAttributes) return;

        if(_module.name === 'cartesian') {
            handleBasePlotModule(layoutAttributes, _module, 'xaxis');
            handleBasePlotModule(layoutAttributes, _module, 'yaxis');
        }
        else {
            var astr = _module.attr === 'subplot' ? _module.name : _module.attr;

            handleBasePlotModule(layoutAttributes, _module, astr);
        }
    });

    // polar layout attributes
    layoutAttributes = assignPolarLayoutAttrs(layoutAttributes);

    // add registered components layout attributes
    Object.keys(Registry.componentsRegistry).forEach(function(k) {
        var _module = Registry.componentsRegistry[k];

        if(!_module.layoutAttributes) return;

        if(_module.schema && _module.schema.layout) {
            Object.keys(_module.schema.layout).forEach(function(v) {
                insertAttrs(layoutAttributes, _module.schema.layout[v], v);
            });
        }
        else {
            insertAttrs(layoutAttributes, _module.layoutAttributes, _module.name);
        }
    });

    return {
        layoutAttributes: formatAttributes(layoutAttributes)
    };
}

function getTransformAttributes(type) {
    var _module = Registry.transformsRegistry[type];
    var attributes = extendDeep({}, _module.attributes);

    // add registered components transform attributes
    Object.keys(Registry.componentsRegistry).forEach(function(k) {
        var _module = Registry.componentsRegistry[k];

        if(_module.schema && _module.schema.transforms && _module.schema.transforms[type]) {
            Object.keys(_module.schema.transforms[type]).forEach(function(v) {
                insertAttrs(attributes, _module.schema.transforms[type][v], v);
            });
        }
    });

    return {
        attributes: formatAttributes(attributes)
    };
}

function formatAttributes(attrs) {
    mergeValTypeAndRole(attrs);
    formatArrayContainers(attrs);

    return attrs;
}

function mergeValTypeAndRole(attrs) {

    function makeSrcAttr(attrName) {
        return {
            valType: 'string',
            role: 'info',
            description: [
                'Sets the source reference on plot.ly for ',
                attrName, '.'
            ].join(' ')
        };
    }

    function callback(attr, attrName, attrs) {
        if(exports.isValObject(attr)) {
            if(attr.valType === 'data_array') {
                // all 'data_array' attrs have role 'data'
                attr.role = 'data';
                // all 'data_array' attrs have a corresponding 'src' attr
                attrs[attrName + 'src'] = makeSrcAttr(attrName);
            }
            else if(attr.arrayOk === true) {
                // all 'arrayOk' attrs have a corresponding 'src' attr
                attrs[attrName + 'src'] = makeSrcAttr(attrName);
            }
        }
        else if(Lib.isPlainObject(attr)) {
            // all attrs container objects get role 'object'
            attr.role = 'object';
        }
    }

    exports.crawl(attrs, callback);
}

function formatArrayContainers(attrs) {

    function callback(attr, attrName, attrs) {
        if(!attr) return;

        var itemName = attr[IS_LINKED_TO_ARRAY];

        if(!itemName) return;

        delete attr[IS_LINKED_TO_ARRAY];

        attrs[attrName] = { items: {} };
        attrs[attrName].items[itemName] = attr;
        attrs[attrName].role = 'object';
    }

    exports.crawl(attrs, callback);
}

function assignPolarLayoutAttrs(layoutAttributes) {
    extendFlat(layoutAttributes, {
        radialaxis: polarAxisAttrs.radialaxis,
        angularaxis: polarAxisAttrs.angularaxis
    });

    extendFlat(layoutAttributes, polarAxisAttrs.layout);

    return layoutAttributes;
}

function handleBasePlotModule(layoutAttributes, _module, astr) {
    var np = Lib.nestedProperty(layoutAttributes, astr),
        attrs = extendDeep({}, _module.layoutAttributes);

    attrs[IS_SUBPLOT_OBJ] = true;
    np.set(attrs);
}

function insertAttrs(baseAttrs, newAttrs, astr) {
    var np = Lib.nestedProperty(baseAttrs, astr);

    np.set(extendDeep(np.get() || {}, newAttrs));
}

},{"../lib":610,"../plots/animation_attributes":638,"../plots/attributes":640,"../plots/frame_attributes":663,"../plots/layout_attributes":693,"../plots/polar/area_attributes":703,"../plots/polar/axis_attributes":704,"../registry":717}],632:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../registry');
var Lib = require('../lib');


module.exports = function register(_modules) {
    if(!_modules) {
        throw new Error('No argument passed to Plotly.register.');
    }
    else if(_modules && !Array.isArray(_modules)) {
        _modules = [_modules];
    }

    for(var i = 0; i < _modules.length; i++) {
        var newModule = _modules[i];

        if(!newModule) {
            throw new Error('Invalid module was attempted to be registered!');
        }

        switch(newModule.moduleType) {
            case 'trace':
                registerTraceModule(newModule);
                break;

            case 'transform':
                registerTransformModule(newModule);
                break;

            case 'component':
                registerComponentModule(newModule);
                break;

            default:
                throw new Error('Invalid module was attempted to be registered!');
        }
    }
};

function registerTraceModule(newModule) {
    Registry.register(newModule, newModule.name, newModule.categories, newModule.meta);

    if(!Registry.subplotsRegistry[newModule.basePlotModule.name]) {
        Registry.registerSubplot(newModule.basePlotModule);
    }
}

function registerTransformModule(newModule) {
    if(typeof newModule.name !== 'string') {
        throw new Error('Transform module *name* must be a string.');
    }

    var prefix = 'Transform module ' + newModule.name;

    var hasTransform = typeof newModule.transform === 'function',
        hasCalcTransform = typeof newModule.calcTransform === 'function';


    if(!hasTransform && !hasCalcTransform) {
        throw new Error(prefix + ' is missing a *transform* or *calcTransform* method.');
    }

    if(hasTransform && hasCalcTransform) {
        Lib.log([
            prefix + ' has both a *transform* and *calcTransform* methods.',
            'Please note that all *transform* methods are executed',
            'before all *calcTransform* methods.'
        ].join(' '));
    }

    if(!Lib.isPlainObject(newModule.attributes)) {
        Lib.log(prefix + ' registered without an *attributes* object.');
    }

    if(typeof newModule.supplyDefaults !== 'function') {
        Lib.log(prefix + ' registered without a *supplyDefaults* method.');
    }

    Registry.transformsRegistry[newModule.name] = newModule;
}

function registerComponentModule(newModule) {
    if(typeof newModule.name !== 'string') {
        throw new Error('Component module *name* must be a string.');
    }

    Registry.registerComponent(newModule);
}

},{"../lib":610,"../registry":717}],633:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../plotly');
var Lib = require('../lib');

/**
 * Extends the plot config
 *
 * @param {object} configObj partial plot configuration object
 *      to extend the current plot configuration.
 *
 */
module.exports = function setPlotConfig(configObj) {
    return Lib.extendFlat(Plotly.defaultConfig, configObj);
};

},{"../lib":610,"../plotly":637}],634:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../plotly');
var Registry = require('../registry');
var Plots = require('../plots/plots');
var Lib = require('../lib');

var Color = require('../components/color');
var Drawing = require('../components/drawing');
var Titles = require('../components/titles');
var ModeBar = require('../components/modebar');


exports.layoutStyles = function(gd) {
    return Lib.syncOrAsync([Plots.doAutoMargin, exports.lsInner], gd);
};

exports.lsInner = function(gd) {
    var fullLayout = gd._fullLayout,
        gs = fullLayout._size,
        axList = Plotly.Axes.list(gd),
        i;

    // clear axis line positions, to be set in the subplot loop below
    for(i = 0; i < axList.length; i++) axList[i]._linepositions = {};

    fullLayout._paperdiv
        .style({
            width: fullLayout.width + 'px',
            height: fullLayout.height + 'px'
        })
        .selectAll('.main-svg')
            .call(Drawing.setSize, fullLayout.width, fullLayout.height);

    gd._context.setBackground(gd, fullLayout.paper_bgcolor);

    var freefinished = [];
    fullLayout._paper.selectAll('g.subplot').each(function(subplot) {
        var plotinfo = fullLayout._plots[subplot],
            xa = Plotly.Axes.getFromId(gd, subplot, 'x'),
            ya = Plotly.Axes.getFromId(gd, subplot, 'y');

        xa.setScale(); // this may already be done... not sure
        ya.setScale();

        if(plotinfo.bg) {
            plotinfo.bg
                .call(Drawing.setRect,
                    xa._offset - gs.p, ya._offset - gs.p,
                    xa._length + 2 * gs.p, ya._length + 2 * gs.p)
                .call(Color.fill, fullLayout.plot_bgcolor);
        }

        // Clip so that data only shows up on the plot area.
        plotinfo.clipId = 'clip' + fullLayout._uid + subplot + 'plot';

        var plotClip = fullLayout._defs.selectAll('g.clips')
            .selectAll('#' + plotinfo.clipId)
            .data([0]);

        plotClip.enter().append('clipPath')
            .attr({
                'class': 'plotclip',
                'id': plotinfo.clipId
            })
            .append('rect');

        plotClip.selectAll('rect')
            .attr({
                'width': xa._length,
                'height': ya._length
            });


        plotinfo.plot.call(Lib.setTranslate, xa._offset, ya._offset);
        plotinfo.plot.call(Drawing.setClipUrl, plotinfo.clipId);

        var xlw = Drawing.crispRound(gd, xa.linewidth, 1),
            ylw = Drawing.crispRound(gd, ya.linewidth, 1),
            xp = gs.p + ylw,
            xpathPrefix = 'M' + (-xp) + ',',
            xpathSuffix = 'h' + (xa._length + 2 * xp),
            showfreex = xa.anchor === 'free' &&
                freefinished.indexOf(xa._id) === -1,
            freeposx = gs.h * (1 - (xa.position||0)) + ((xlw / 2) % 1),
            showbottom =
                (xa.anchor === ya._id && (xa.mirror || xa.side !== 'top')) ||
                xa.mirror === 'all' || xa.mirror === 'allticks' ||
                (xa.mirrors && xa.mirrors[ya._id + 'bottom']),
            bottompos = ya._length + gs.p + xlw / 2,
            showtop =
                (xa.anchor === ya._id && (xa.mirror || xa.side === 'top')) ||
                xa.mirror === 'all' || xa.mirror === 'allticks' ||
                (xa.mirrors && xa.mirrors[ya._id + 'top']),
            toppos = -gs.p - xlw / 2,

            // shorten y axis lines so they don't overlap x axis lines
            yp = gs.p,
            // except where there's no x line
            // TODO: this gets more complicated with multiple x and y axes
            ypbottom = showbottom ? 0 : xlw,
            yptop = showtop ? 0 : xlw,
            ypathSuffix = ',' + (-yp - yptop) +
                'v' + (ya._length + 2 * yp + yptop + ypbottom),
            showfreey = ya.anchor === 'free' &&
                freefinished.indexOf(ya._id) === -1,
            freeposy = gs.w * (ya.position||0) + ((ylw / 2) % 1),
            showleft =
                (ya.anchor === xa._id && (ya.mirror || ya.side !== 'right')) ||
                ya.mirror === 'all' || ya.mirror === 'allticks' ||
                (ya.mirrors && ya.mirrors[xa._id + 'left']),
            leftpos = -gs.p - ylw / 2,
            showright =
                (ya.anchor === xa._id && (ya.mirror || ya.side === 'right')) ||
                ya.mirror === 'all' || ya.mirror === 'allticks' ||
                (ya.mirrors && ya.mirrors[xa._id + 'right']),
            rightpos = xa._length + gs.p + ylw / 2;

        // save axis line positions for ticks, draggers, etc to reference
        // each subplot gets an entry:
        //    [left or bottom, right or top, free, main]
        // main is the position at which to draw labels and draggers, if any
        xa._linepositions[subplot] = [
            showbottom ? bottompos : undefined,
            showtop ? toppos : undefined,
            showfreex ? freeposx : undefined
        ];
        if(xa.anchor === ya._id) {
            xa._linepositions[subplot][3] = xa.side === 'top' ?
                toppos : bottompos;
        }
        else if(showfreex) {
            xa._linepositions[subplot][3] = freeposx;
        }

        ya._linepositions[subplot] = [
            showleft ? leftpos : undefined,
            showright ? rightpos : undefined,
            showfreey ? freeposy : undefined
        ];
        if(ya.anchor === xa._id) {
            ya._linepositions[subplot][3] = ya.side === 'right' ?
                rightpos : leftpos;
        }
        else if(showfreey) {
            ya._linepositions[subplot][3] = freeposy;
        }

        // translate all the extra stuff to have the
        // same origin as the plot area or axes
        var origin = 'translate(' + xa._offset + ',' + ya._offset + ')',
            originx = origin,
            originy = origin;
        if(showfreex) {
            originx = 'translate(' + xa._offset + ',' + gs.t + ')';
            toppos += ya._offset - gs.t;
            bottompos += ya._offset - gs.t;
        }
        if(showfreey) {
            originy = 'translate(' + gs.l + ',' + ya._offset + ')';
            leftpos += xa._offset - gs.l;
            rightpos += xa._offset - gs.l;
        }

        plotinfo.xlines
            .attr('transform', originx)
            .attr('d', (
                (showbottom ? (xpathPrefix + bottompos + xpathSuffix) : '') +
                (showtop ? (xpathPrefix + toppos + xpathSuffix) : '') +
                (showfreex ? (xpathPrefix + freeposx + xpathSuffix) : '')) ||
                // so it doesn't barf with no lines shown
                'M0,0')
            .style('stroke-width', xlw + 'px')
            .call(Color.stroke, xa.showline ?
                xa.linecolor : 'rgba(0,0,0,0)');
        plotinfo.ylines
            .attr('transform', originy)
            .attr('d', (
                (showleft ? ('M' + leftpos + ypathSuffix) : '') +
                (showright ? ('M' + rightpos + ypathSuffix) : '') +
                (showfreey ? ('M' + freeposy + ypathSuffix) : '')) ||
                'M0,0')
            .attr('stroke-width', ylw + 'px')
            .call(Color.stroke, ya.showline ?
                ya.linecolor : 'rgba(0,0,0,0)');

        plotinfo.xaxislayer.attr('transform', originx);
        plotinfo.yaxislayer.attr('transform', originy);
        plotinfo.gridlayer.attr('transform', origin);
        plotinfo.zerolinelayer.attr('transform', origin);
        plotinfo.draglayer.attr('transform', origin);

        // mark free axes as displayed, so we don't draw them again
        if(showfreex) { freefinished.push(xa._id); }
        if(showfreey) { freefinished.push(ya._id); }
    });

    Plotly.Axes.makeClipPaths(gd);
    exports.drawMainTitle(gd);
    ModeBar.manage(gd);

    return gd._promises.length && Promise.all(gd._promises);
};

exports.drawMainTitle = function(gd) {
    var fullLayout = gd._fullLayout;

    Titles.draw(gd, 'gtitle', {
        propContainer: fullLayout,
        propName: 'title',
        dfltName: 'Plot',
        attributes: {
            x: fullLayout.width / 2,
            y: fullLayout._size.t / 2,
            'text-anchor': 'middle'
        }
    });
};

// First, see if we need to do arraysToCalcdata
// call it regardless of what change we made, in case
// supplyDefaults brought in an array that was already
// in gd.data but not in gd._fullData previously
exports.doTraceStyle = function(gd) {
    for(var i = 0; i < gd.calcdata.length; i++) {
        var cdi = gd.calcdata[i],
            _module = ((cdi[0] || {}).trace || {})._module || {},
            arraysToCalcdata = _module.arraysToCalcdata;

        if(arraysToCalcdata) arraysToCalcdata(cdi, cdi[0].trace);
    }

    Plots.style(gd);
    Registry.getComponentMethod('legend', 'draw')(gd);

    return Plots.previousPromises(gd);
};

exports.doColorBars = function(gd) {
    for(var i = 0; i < gd.calcdata.length; i++) {
        var cdi0 = gd.calcdata[i][0];

        if((cdi0.t || {}).cb) {
            var trace = cdi0.trace,
                cb = cdi0.t.cb;

            if(Registry.traceIs(trace, 'contour')) {
                cb.line({
                    width: trace.contours.showlines !== false ?
                        trace.line.width : 0,
                    dash: trace.line.dash,
                    color: trace.contours.coloring === 'line' ?
                        cb._opts.line.color : trace.line.color
                });
            }
            if(Registry.traceIs(trace, 'markerColorscale')) {
                cb.options(trace.marker.colorbar)();
            }
            else cb.options(trace.colorbar)();
        }
    }

    return Plots.previousPromises(gd);
};

// force plot() to redo the layout and replot with the modified layout
exports.layoutReplot = function(gd) {
    var layout = gd.layout;
    gd.layout = undefined;
    return Plotly.plot(gd, '', layout);
};

exports.doLegend = function(gd) {
    Registry.getComponentMethod('legend', 'draw')(gd);
    return Plots.previousPromises(gd);
};

exports.doTicksRelayout = function(gd) {
    Plotly.Axes.doTicks(gd, 'redraw');
    exports.drawMainTitle(gd);
    return Plots.previousPromises(gd);
};

exports.doModeBar = function(gd) {
    var fullLayout = gd._fullLayout;
    var subplotIds, i;

    ModeBar.manage(gd);
    Plotly.Fx.supplyLayoutDefaults(gd.layout, gd._fullLayout, gd._fullData);
    Plotly.Fx.init(gd);

    subplotIds = Plots.getSubplotIds(fullLayout, 'gl3d');
    for(i = 0; i < subplotIds.length; i++) {
        var scene = fullLayout[subplotIds[i]]._scene;
        scene.updateFx(fullLayout.dragmode, fullLayout.hovermode);
    }

    subplotIds = Plots.getSubplotIds(fullLayout, 'gl2d');
    for(i = 0; i < subplotIds.length; i++) {
        var scene2d = fullLayout._plots[subplotIds[i]]._scene2d;
        scene2d.updateFx(fullLayout);
    }

    subplotIds = Plots.getSubplotIds(fullLayout, 'geo');
    for(i = 0; i < subplotIds.length; i++) {
        var geo = fullLayout[subplotIds[i]]._subplot;
        geo.updateFx(fullLayout.hovermode);
    }

    return Plots.previousPromises(gd);
};

},{"../components/color":510,"../components/drawing":533,"../components/modebar":556,"../components/titles":584,"../lib":610,"../plotly":637,"../plots/plots":702,"../registry":717}],635:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

var Plotly = require('../plotly');
var Lib = require('../lib');

var helpers = require('../snapshot/helpers');
var clonePlot = require('../snapshot/cloneplot');
var toSVG = require('../snapshot/tosvg');
var svgToImg = require('../snapshot/svgtoimg');

/**
 * @param {object} gd figure Object
 * @param {object} opts option object
 * @param opts.format 'jpeg' | 'png' | 'webp' | 'svg'
 * @param opts.width width of snapshot in px
 * @param opts.height height of snapshot in px
 */
function toImage(gd, opts) {

    var promise = new Promise(function(resolve, reject) {
        // check for undefined opts
        opts = opts || {};
        // default to png
        opts.format = opts.format || 'png';

        var isSizeGood = function(size) {
            // undefined and null are valid options
            if(size === undefined || size === null) {
                return true;
            }

            if(isNumeric(size) && size > 1) {
                return true;
            }

            return false;
        };

        if(!isSizeGood(opts.width) || !isSizeGood(opts.height)) {
            reject(new Error('Height and width should be pixel values.'));
        }

        // first clone the GD so we can operate in a clean environment
        var clone = clonePlot(gd, {format: 'png', height: opts.height, width: opts.width});
        var clonedGd = clone.gd;

        // put the cloned div somewhere off screen before attaching to DOM
        clonedGd.style.position = 'absolute';
        clonedGd.style.left = '-5000px';
        document.body.appendChild(clonedGd);

        function wait() {
            var delay = helpers.getDelay(clonedGd._fullLayout);

            return new Promise(function(resolve, reject) {
                setTimeout(function() {
                    var svg = toSVG(clonedGd);

                    var canvas = document.createElement('canvas');
                    canvas.id = Lib.randstr();

                    svgToImg({
                        format: opts.format,
                        width: clonedGd._fullLayout.width,
                        height: clonedGd._fullLayout.height,
                        canvas: canvas,
                        svg: svg,
                        // ask svgToImg to return a Promise
                        //  rather than EventEmitter
                        //  leave EventEmitter for backward
                        //  compatibility
                        promise: true
                    }).then(function(url) {
                        if(clonedGd) document.body.removeChild(clonedGd);
                        resolve(url);
                    }).catch(function(err) {
                        reject(err);
                    });

                }, delay);
            });
        }

        var redrawFunc = helpers.getRedrawFunc(clonedGd);

        Plotly.plot(clonedGd, clone.data, clone.layout, clone.config)
            .then(redrawFunc)
            .then(wait)
            .then(function(url) { resolve(url); })
            .catch(function(err) {
                reject(err);
            });
    });

    return promise;
}

module.exports = toImage;

},{"../lib":610,"../plotly":637,"../snapshot/cloneplot":718,"../snapshot/helpers":721,"../snapshot/svgtoimg":723,"../snapshot/tosvg":725,"fast-isnumeric":97}],636:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


var Lib = require('../lib');
var Plots = require('../plots/plots');
var PlotSchema = require('./plot_schema');

var isPlainObject = Lib.isPlainObject;
var isArray = Array.isArray;


/**
 * Validate a data array and layout object.
 *
 * @param {array} data
 * @param {object} layout
 *
 * @return {array} array of error objects each containing:
 *  - {string} code
 *      error code ('object', 'array', 'schema', 'unused', 'invisible' or 'value')
 *  - {string} container
 *      container where the error occurs ('data' or 'layout')
 *  - {number} trace
 *      trace index of the 'data' container where the error occurs
 *  - {array} path
 *      nested path to the key that causes the error
 *  - {string} astr
 *      attribute string variant of 'path' compatible with Plotly.restyle and
 *      Plotly.relayout.
 *  - {string} msg
 *      error message (shown in console in logger config argument is enable)
 */
module.exports = function valiate(data, layout) {
    var schema = PlotSchema.get(),
        errorList = [],
        gd = {};

    var dataIn, layoutIn;

    if(isArray(data)) {
        gd.data = Lib.extendDeep([], data);
        dataIn = data;
    }
    else {
        gd.data = [];
        dataIn = [];
        errorList.push(format('array', 'data'));
    }

    if(isPlainObject(layout)) {
        gd.layout = Lib.extendDeep({}, layout);
        layoutIn = layout;
    }
    else {
        gd.layout = {};
        layoutIn = {};
        if(arguments.length > 1) {
            errorList.push(format('object', 'layout'));
        }
    }

    // N.B. dataIn and layoutIn are in general not the same as
    // gd.data and gd.layout after supplyDefaults as some attributes
    // in gd.data and gd.layout (still) get mutated during this step.

    Plots.supplyDefaults(gd);

    var dataOut = gd._fullData,
        len = dataIn.length;

    for(var i = 0; i < len; i++) {
        var traceIn = dataIn[i],
            base = ['data', i];

        if(!isPlainObject(traceIn)) {
            errorList.push(format('object', base));
            continue;
        }

        var traceOut = dataOut[i],
            traceType = traceOut.type,
            traceSchema = schema.traces[traceType].attributes;

        // PlotSchema does something fancy with trace 'type', reset it here
        // to make the trace schema compatible with Lib.validate.
        traceSchema.type = {
            valType: 'enumerated',
            values: [traceType]
        };

        if(traceOut.visible === false && traceIn.visible !== false) {
            errorList.push(format('invisible', base));
        }

        crawl(traceIn, traceOut, traceSchema, errorList, base);

        var transformsIn = traceIn.transforms,
            transformsOut = traceOut.transforms;

        if(transformsIn) {
            if(!isArray(transformsIn)) {
                errorList.push(format('array', base, ['transforms']));
            }

            base.push('transforms');

            for(var j = 0; j < transformsIn.length; j++) {
                var path = ['transforms', j],
                    transformType = transformsIn[j].type;

                if(!isPlainObject(transformsIn[j])) {
                    errorList.push(format('object', base, path));
                    continue;
                }

                var transformSchema = schema.transforms[transformType] ?
                    schema.transforms[transformType].attributes :
                    {};

                // add 'type' to transform schema to validate the transform type
                transformSchema.type = {
                    valType: 'enumerated',
                    values: Object.keys(schema.transforms)
                };

                crawl(transformsIn[j], transformsOut[j], transformSchema, errorList, base, path);
            }
        }
    }

    var layoutOut = gd._fullLayout,
        layoutSchema = fillLayoutSchema(schema, dataOut);

    crawl(layoutIn, layoutOut, layoutSchema, errorList, 'layout');

    // return undefined if no validation errors were found
    return (errorList.length === 0) ? void(0) : errorList;
};

function crawl(objIn, objOut, schema, list, base, path) {
    path = path || [];

    var keys = Object.keys(objIn);

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i];

        // transforms are handled separately
        if(k === 'transforms') continue;

        var p = path.slice();
        p.push(k);

        var valIn = objIn[k],
            valOut = objOut[k];

        var nestedSchema = getNestedSchema(schema, k),
            isInfoArray = (nestedSchema || {}).valType === 'info_array';

        if(!isInSchema(schema, k)) {
            list.push(format('schema', base, p));
        }
        else if(isPlainObject(valIn) && isPlainObject(valOut)) {
            crawl(valIn, valOut, nestedSchema, list, base, p);
        }
        else if(nestedSchema.items && !isInfoArray && isArray(valIn)) {
            var items = nestedSchema.items,
                _nestedSchema = items[Object.keys(items)[0]],
                indexList = [];

            var j, _p;

            // loop over valOut items while keeping track of their
            // corresponding input container index (given by _index)
            for(j = 0; j < valOut.length; j++) {
                var _index = valOut[j]._index || j;

                _p = p.slice();
                _p.push(_index);

                if(isPlainObject(valIn[_index]) && isPlainObject(valOut[j])) {
                    indexList.push(_index);
                    crawl(valIn[_index], valOut[j], _nestedSchema, list, base, _p);
                }
            }

            // loop over valIn to determine where it went wrong for some items
            for(j = 0; j < valIn.length; j++) {
                _p = p.slice();
                _p.push(j);

                if(!isPlainObject(valIn[j])) {
                    list.push(format('object', base, _p, valIn[j]));
                }
                else if(indexList.indexOf(j) === -1) {
                    list.push(format('unused', base, _p));
                }
            }
        }
        else if(!isPlainObject(valIn) && isPlainObject(valOut)) {
            list.push(format('object', base, p, valIn));
        }
        else if(!isArray(valIn) && isArray(valOut) && !isInfoArray) {
            list.push(format('array', base, p, valIn));
        }
        else if(!(k in objOut)) {
            list.push(format('unused', base, p, valIn));
        }
        else if(!Lib.validate(valIn, nestedSchema)) {
            list.push(format('value', base, p, valIn));
        }
    }

    return list;
}

// the 'full' layout schema depends on the traces types presents
function fillLayoutSchema(schema, dataOut) {
    for(var i = 0; i < dataOut.length; i++) {
        var traceType = dataOut[i].type,
            traceLayoutAttr = schema.traces[traceType].layoutAttributes;

        if(traceLayoutAttr) {
            Lib.extendFlat(schema.layout.layoutAttributes, traceLayoutAttr);
        }
    }

    return schema.layout.layoutAttributes;
}

// validation error codes
var code2msgFunc = {
    object: function(base, astr) {
        var prefix;

        if(base === 'layout' && astr === '') prefix = 'The layout argument';
        else if(base[0] === 'data' && astr === '') {
            prefix = 'Trace ' + base[1] + ' in the data argument';
        }
        else prefix = inBase(base) + 'key ' + astr;

        return prefix + ' must be linked to an object container';
    },
    array: function(base, astr) {
        var prefix;

        if(base === 'data') prefix = 'The data argument';
        else prefix = inBase(base) + 'key ' + astr;

        return prefix + ' must be linked to an array container';
    },
    schema: function(base, astr) {
        return inBase(base) + 'key ' + astr + ' is not part of the schema';
    },
    unused: function(base, astr, valIn) {
        var target = isPlainObject(valIn) ? 'container' : 'key';

        return inBase(base) + target + ' ' + astr + ' did not get coerced';
    },
    invisible: function(base) {
        return 'Trace ' + base[1] + ' got defaulted to be not visible';
    },
    value: function(base, astr, valIn) {
        return [
            inBase(base) + 'key ' + astr,
            'is set to an invalid value (' + valIn + ')'
        ].join(' ');
    }
};

function inBase(base) {
    if(isArray(base)) return 'In data trace ' + base[1] + ', ';

    return 'In ' + base + ', ';
}

function format(code, base, path, valIn) {
    path = path || '';

    var container, trace;

    // container is either 'data' or 'layout
    // trace is the trace index if 'data', null otherwise

    if(isArray(base)) {
        container = base[0];
        trace = base[1];
    }
    else {
        container = base;
        trace = null;
    }

    var astr = convertPathToAttributeString(path),
        msg = code2msgFunc[code](base, astr, valIn);

    // log to console if logger config option is enabled
    Lib.log(msg);

    return {
        code: code,
        container: container,
        trace: trace,
        path: path,
        astr: astr,
        msg: msg
    };
}

function isInSchema(schema, key) {
    var parts = splitKey(key),
        keyMinusId = parts.keyMinusId,
        id = parts.id;

    if((keyMinusId in schema) && schema[keyMinusId]._isSubplotObj && id) {
        return true;
    }

    return (key in schema);
}

function getNestedSchema(schema, key) {
    var parts = splitKey(key);

    return schema[parts.keyMinusId];
}

function splitKey(key) {
    var idRegex = /([2-9]|[1-9][0-9]+)$/;

    var keyMinusId = key.split(idRegex)[0],
        id = key.substr(keyMinusId.length, key.length);

    return {
        keyMinusId: keyMinusId,
        id: id
    };
}

function convertPathToAttributeString(path) {
    if(!isArray(path)) return String(path);

    var astr = '';

    for(var i = 0; i < path.length; i++) {
        var p = path[i];

        if(typeof p === 'number') {
            astr = astr.substr(0, astr.length - 1) + '[' + p + ']';
        }
        else {
            astr += p;
        }

        if(i < path.length - 1) astr += '.';
    }

    return astr;
}

},{"../lib":610,"../plots/plots":702,"./plot_schema":631}],637:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

/*
 * Pack internal modules unto an object.
 *
 * This object is require'ed in as 'Plotly' in numerous src and test files.
 * Require'ing 'Plotly' bypasses circular dependencies.
 *
 * Future development should move away from this pattern.
 *
 */

// configuration
exports.defaultConfig = require('./plot_api/plot_config');

// plots
exports.Plots = require('./plots/plots');
exports.Axes = require('./plots/cartesian/axes');
exports.Fx = require('./plots/cartesian/graph_interact');
exports.ModeBar = require('./components/modebar');

// plot api
require('./plot_api/plot_api');

},{"./components/modebar":556,"./plot_api/plot_api":629,"./plot_api/plot_config":630,"./plots/cartesian/axes":642,"./plots/cartesian/graph_interact":649,"./plots/plots":702}],638:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    mode: {
        valType: 'enumerated',
        dflt: 'afterall',
        role: 'info',
        values: ['immediate', 'next', 'afterall'],
        description: [
            'Describes how a new animate call interacts with currently-running',
            'animations. If `immediate`, current animations are interrupted and',
            'the new animation is started. If `next`, the current frame is allowed',
            'to complete, after which the new animation is started. If `afterall`',
            'all existing frames are animated to completion before the new animation',
            'is started.'
        ].join(' ')
    },
    direction: {
        valType: 'enumerated',
        role: 'info',
        values: ['forward', 'reverse'],
        dflt: 'forward',
        description: [
            'The direction in which to play the frames triggered by the animation call'
        ].join(' ')
    },
    fromcurrent: {
        valType: 'boolean',
        dflt: false,
        role: 'info',
        description: [
            'Play frames starting at the current frame instead of the beginning.'
        ].join(' ')
    },
    frame: {
        duration: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 500,
            description: [
                'The duration in milliseconds of each frame. If greater than the frame',
                'duration, it will be limited to the frame duration.'
            ].join(' ')
        },
        redraw: {
            valType: 'boolean',
            role: 'info',
            dflt: true,
            description: [
                'Redraw the plot at completion of the transition. This is desirable',
                'for transitions that include properties that cannot be transitioned,',
                'but may significantly slow down updates that do not require a full',
                'redraw of the plot'
            ].join(' ')
        },
    },
    transition: {
        duration: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 500,
            description: [
                'The duration of the transition, in milliseconds. If equal to zero,',
                'updates are synchronous.'
            ].join(' ')
        },
        easing: {
            valType: 'enumerated',
            dflt: 'cubic-in-out',
            values: [
                'linear',
                'quad',
                'cubic',
                'sin',
                'exp',
                'circle',
                'elastic',
                'back',
                'bounce',
                'linear-in',
                'quad-in',
                'cubic-in',
                'sin-in',
                'exp-in',
                'circle-in',
                'elastic-in',
                'back-in',
                'bounce-in',
                'linear-out',
                'quad-out',
                'cubic-out',
                'sin-out',
                'exp-out',
                'circle-out',
                'elastic-out',
                'back-out',
                'bounce-out',
                'linear-in-out',
                'quad-in-out',
                'cubic-in-out',
                'sin-in-out',
                'exp-in-out',
                'circle-in-out',
                'elastic-in-out',
                'back-in-out',
                'bounce-in-out'
            ],
            role: 'info',
            description: 'The easing function used for the transition'
        },
    }
};

},{}],639:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');


/** Convenience wrapper for making array container logic DRY and consistent
 *
 * @param {object} parentObjIn
 *  user input object where the container in question is linked
 *  (i.e. either a user trace object or the user layout object)
 *
 * @param {object} parentObjOut
 *  full object where the coerced container will be linked
 *  (i.e. either a full trace object or the full layout object)
 *
 * @param {object} opts
 *  options object:
 *   - name {string}
 *      name of the key linking the container in question
 *   - handleItemDefaults {function}
 *      defaults method to be called on each item in the array container in question
 *
 *      Its arguments are:
 *          - itemIn {object} item in user layout
 *          - itemOut {object} item in full layout
 *          - parentObj {object} (as in closure)
 *          - opts {object} (as in closure)
 *          - itemOpts {object}
 *              - itemIsNotPlainObject {boolean}
 * N.B.
 *
 *  - opts is passed to handleItemDefaults so it can also store
 *    links to supplementary data (e.g. fullData for layout components)
 *
 */
module.exports = function handleArrayContainerDefaults(parentObjIn, parentObjOut, opts) {
    var name = opts.name;

    var contIn = Array.isArray(parentObjIn[name]) ? parentObjIn[name] : [],
        contOut = parentObjOut[name] = [];

    for(var i = 0; i < contIn.length; i++) {
        var itemIn = contIn[i],
            itemOut = {},
            itemOpts = {};

        if(!Lib.isPlainObject(itemIn)) {
            itemOpts.itemIsNotPlainObject = true;
            itemIn = {};
        }

        opts.handleItemDefaults(itemIn, itemOut, parentObjOut, opts, itemOpts);

        itemOut._input = itemIn;
        itemOut._index = i;

        contOut.push(itemOut);
    }
};

},{"../lib":610}],640:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    type: {
        valType: 'enumerated',
        role: 'info',
        values: [],     // listed dynamically
        dflt: 'scatter'
    },
    visible: {
        valType: 'enumerated',
        values: [true, false, 'legendonly'],
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not this trace is visible.',
            'If *legendonly*, the trace is not drawn,',
            'but can appear as a legend item',
            '(provided that the legend itself is visible).'
        ].join(' ')
    },
    showlegend: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not an item corresponding to this',
            'trace is shown in the legend.'
        ].join(' ')
    },
    legendgroup: {
        valType: 'string',
        role: 'info',
        dflt: '',
        description: [
            'Sets the legend group for this trace.',
            'Traces part of the same legend group hide/show at the same time',
            'when toggling legend items.'
        ].join(' ')
    },
    opacity: {
        valType: 'number',
        role: 'style',
        min: 0,
        max: 1,
        dflt: 1,
        description: 'Sets the opacity of the trace.'
    },
    name: {
        valType: 'string',
        role: 'info',
        description: [
            'Sets the trace name.',
            'The trace name appear as the legend item and on hover.'
        ].join(' ')
    },
    uid: {
        valType: 'string',
        role: 'info',
        dflt: ''
    },
    hoverinfo: {
        valType: 'flaglist',
        role: 'info',
        flags: ['x', 'y', 'z', 'text', 'name'],
        extras: ['all', 'none', 'skip'],
        dflt: 'all',
        description: [
            'Determines which trace information appear on hover.',
            'If `none` or `skip` are set, no information is displayed upon hovering.',
            'But, if `none` is set, click and hover events are still fired.'
        ].join(' ')
    },
    stream: {
        token: {
            valType: 'string',
            noBlank: true,
            strict: true,
            role: 'info',
            description: [
                'The stream id number links a data trace on a plot with a stream.',
                'See https://plot.ly/settings for more details.'
            ].join(' ')
        },
        maxpoints: {
            valType: 'number',
            min: 0,
            max: 10000,
            dflt: 500,
            role: 'info',
            description: [
                'Sets the maximum number of points to keep on the plots from an',
                'incoming stream.',
                'If `maxpoints` is set to *50*, only the newest 50 points will',
                'be displayed on the plot.'
            ].join(' ')
        }
    }
};

},{}],641:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    xaxis: {
        valType: 'subplotid',
        role: 'info',
        dflt: 'x',
        description: [
            'Sets a reference between this trace\'s x coordinates and',
            'a 2D cartesian x axis.',
            'If *x* (the default value), the x coordinates refer to',
            '`layout.xaxis`.',
            'If *x2*, the x coordinates refer to `layout.xaxis2`, and so on.'
        ].join(' ')
    },
    yaxis: {
        valType: 'subplotid',
        role: 'info',
        dflt: 'y',
        description: [
            'Sets a reference between this trace\'s y coordinates and',
            'a 2D cartesian y axis.',
            'If *y* (the default value), the y coordinates refer to',
            '`layout.yaxis`.',
            'If *y2*, the y coordinates refer to `layout.xaxis2`, and so on.'
        ].join(' ')
    }
};

},{}],642:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');
var Titles = require('../../components/titles');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');

var constants = require('../../constants/numerical');
var FP_SAFE = constants.FP_SAFE;
var ONEAVGYEAR = constants.ONEAVGYEAR;
var ONEAVGMONTH = constants.ONEAVGMONTH;
var ONEDAY = constants.ONEDAY;
var ONEHOUR = constants.ONEHOUR;
var ONEMIN = constants.ONEMIN;
var ONESEC = constants.ONESEC;
var BADNUM = constants.BADNUM;


var axes = module.exports = {};

axes.layoutAttributes = require('./layout_attributes');
axes.supplyLayoutDefaults = require('./layout_defaults');

axes.setConvert = require('./set_convert');

var axisIds = require('./axis_ids');
axes.id2name = axisIds.id2name;
axes.cleanId = axisIds.cleanId;
axes.list = axisIds.list;
axes.listIds = axisIds.listIds;
axes.getFromId = axisIds.getFromId;
axes.getFromTrace = axisIds.getFromTrace;


/*
 * find the list of possible axes to reference with an xref or yref attribute
 * and coerce it to that list
 *
 * attr: the attribute we're generating a reference for. Should end in 'x' or 'y'
 *     but can be prefixed, like 'ax' for annotation's arrow x
 * dflt: the default to coerce to, or blank to use the first axis (falling back on
 *     extraOption if there is no axis)
 * extraOption: aside from existing axes with this letter, what non-axis value is allowed?
 *     Only required if it's different from `dflt`
 */
axes.coerceRef = function(containerIn, containerOut, gd, attr, dflt, extraOption) {
    var axLetter = attr.charAt(attr.length - 1),
        axlist = gd._fullLayout._has('gl2d') ? [] : axes.listIds(gd, axLetter),
        refAttr = attr + 'ref',
        attrDef = {};

    if(!dflt) dflt = axlist[0] || extraOption;
    if(!extraOption) extraOption = dflt;

    // data-ref annotations are not supported in gl2d yet

    attrDef[refAttr] = {
        valType: 'enumerated',
        values: axlist.concat(extraOption ? [extraOption] : []),
        dflt: dflt
    };

    // xref, yref
    return Lib.coerce(containerIn, containerOut, attrDef, refAttr);
};

/*
 * coerce position attributes (range-type) that can be either on axes or absolute
 * (paper or pixel) referenced. The biggest complication here is that we don't know
 * before looking at the axis whether the value must be a number or not (it may be
 * a date string), so we can't use the regular valType='number' machinery
 *
 * axRef (string): the axis this position is referenced to, or:
 *     paper: fraction of the plot area
 *     pixel: pixels relative to some starting position
 * attr (string): the attribute in containerOut we are coercing
 * dflt (number): the default position, as a fraction or pixels. If the attribute
 *     is to be axis-referenced, this will be converted to an axis data value
 *
 * Also cleans the values, since the attribute definition itself has to say
 * valType: 'any' to handle date axes. This allows us to accept:
 * - for category axes: category names, and convert them here into serial numbers.
 *   Note that this will NOT work for axis range endpoints, because we don't know
 *   the category list yet (it's set by ax.makeCalcdata during calc)
 *   but it works for component (note, shape, images) positions.
 * - for date axes: JS Dates or milliseconds, and convert to date strings
 * - for other types: coerce them to numbers
 */
axes.coercePosition = function(containerOut, gd, coerce, axRef, attr, dflt) {
    var pos,
        newPos;

    if(axRef === 'paper' || axRef === 'pixel') {
        pos = coerce(attr, dflt);
    }
    else {
        var ax = axes.getFromId(gd, axRef);

        dflt = ax.fraction2r(dflt);
        pos = coerce(attr, dflt);

        if(ax.type === 'category') {
            // if position is given as a category name, convert it to a number
            if(typeof pos === 'string' && (ax._categories || []).length) {
                newPos = ax._categories.indexOf(pos);
                containerOut[attr] = (newPos === -1) ? dflt : newPos;
                return;
            }
        }
        else if(ax.type === 'date') {
            containerOut[attr] = Lib.cleanDate(pos, BADNUM, ax.calendar);
            return;
        }
    }
    // finally make sure we have a number (unless date type already returned a string)
    containerOut[attr] = isNumeric(pos) ? Number(pos) : dflt;
};

// empty out types for all axes containing these traces
// so we auto-set them again
axes.clearTypes = function(gd, traces) {
    if(!Array.isArray(traces) || !traces.length) {
        traces = (gd._fullData).map(function(d, i) { return i; });
    }
    traces.forEach(function(tracenum) {
        var trace = gd.data[tracenum];
        delete (axes.getFromId(gd, trace.xaxis) || {}).type;
        delete (axes.getFromId(gd, trace.yaxis) || {}).type;
    });
};

// get counteraxis letter for this axis (name or id)
// this can also be used as the id for default counter axis
axes.counterLetter = function(id) {
    var axLetter = id.charAt(0);
    if(axLetter === 'x') return 'y';
    if(axLetter === 'y') return 'x';
};

// incorporate a new minimum difference and first tick into
// forced
// note that _forceTick0 is linearized, so needs to be turned into
// a range value for setting tick0
axes.minDtick = function(ax, newDiff, newFirst, allow) {
    // doesn't make sense to do forced min dTick on log or category axes,
    // and the plot itself may decide to cancel (ie non-grouped bars)
    if(['log', 'category'].indexOf(ax.type) !== -1 || !allow) {
        ax._minDtick = 0;
    }
    // undefined means there's nothing there yet
    else if(ax._minDtick === undefined) {
        ax._minDtick = newDiff;
        ax._forceTick0 = newFirst;
    }
    else if(ax._minDtick) {
        // existing minDtick is an integer multiple of newDiff
        // (within rounding err)
        // and forceTick0 can be shifted to newFirst
        if((ax._minDtick / newDiff + 1e-6) % 1 < 2e-6 &&
                (((newFirst - ax._forceTick0) / newDiff % 1) +
                    1.000001) % 1 < 2e-6) {
            ax._minDtick = newDiff;
            ax._forceTick0 = newFirst;
        }
        // if the converse is true (newDiff is a multiple of minDtick and
        // newFirst can be shifted to forceTick0) then do nothing - same
        // forcing stands. Otherwise, cancel forced minimum
        else if((newDiff / ax._minDtick + 1e-6) % 1 > 2e-6 ||
                (((newFirst - ax._forceTick0) / ax._minDtick % 1) +
                    1.000001) % 1 > 2e-6) {
            ax._minDtick = 0;
        }
    }
};

// Find the autorange for this axis
//
// assumes ax._min and ax._max have already been set by calling axes.expand
// using calcdata from all traces. These are arrays of:
// {val: calcdata value, pad: extra pixels beyond this value}
//
// Returns an array of [min, max]. These are calcdata for log and category axes
// and data for linear and date axes.
//
// TODO: we want to change log to data as well, but it's hard to do this
// maintaining backward compatibility. category will always have to use calcdata
// though, because otherwise values between categories (or outside all categories)
// would be impossible.
axes.getAutoRange = function(ax) {
    var newRange = [];

    var minmin = ax._min[0].val,
        maxmax = ax._max[0].val,
        i;

    for(i = 1; i < ax._min.length; i++) {
        if(minmin !== maxmax) break;
        minmin = Math.min(minmin, ax._min[i].val);
    }
    for(i = 1; i < ax._max.length; i++) {
        if(minmin !== maxmax) break;
        maxmax = Math.max(maxmax, ax._max[i].val);
    }

    var j, minpt, maxpt, minbest, maxbest, dp, dv,
        mbest = 0,
        axReverse = false;

    if(ax.range) {
        var rng = Lib.simpleMap(ax.range, ax.r2l);
        axReverse = rng[1] < rng[0];
    }

    // one-time setting to easily reverse the axis
    // when plotting from code
    if(ax.autorange === 'reversed') {
        axReverse = true;
        ax.autorange = true;
    }

    for(i = 0; i < ax._min.length; i++) {
        minpt = ax._min[i];
        for(j = 0; j < ax._max.length; j++) {
            maxpt = ax._max[j];
            dv = maxpt.val - minpt.val;
            dp = ax._length - minpt.pad - maxpt.pad;
            if(dv > 0 && dp > 0 && dv / dp > mbest) {
                minbest = minpt;
                maxbest = maxpt;
                mbest = dv / dp;
            }
        }
    }

    if(minmin === maxmax) {
        var lower = minmin - 1;
        var upper = minmin + 1;
        if(ax.rangemode === 'tozero') {
            newRange = minmin < 0 ? [lower, 0] : [0, upper];
        }
        else if(ax.rangemode === 'nonnegative') {
            newRange = [Math.max(0, lower), Math.max(0, upper)];
        }
        else {
            newRange = [lower, upper];
        }
    }
    else if(mbest) {
        if(ax.type === 'linear' || ax.type === '-') {
            if(ax.rangemode === 'tozero') {
                if(minbest.val >= 0) {
                    minbest = {val: 0, pad: 0};
                }
                if(maxbest.val <= 0) {
                    maxbest = {val: 0, pad: 0};
                }
            }
            else if(ax.rangemode === 'nonnegative') {
                if(minbest.val - mbest * minbest.pad < 0) {
                    minbest = {val: 0, pad: 0};
                }
                if(maxbest.val < 0) {
                    maxbest = {val: 1, pad: 0};
                }
            }

            // in case it changed again...
            mbest = (maxbest.val - minbest.val) /
                (ax._length - minbest.pad - maxbest.pad);

        }

        newRange = [
            minbest.val - mbest * minbest.pad,
            maxbest.val + mbest * maxbest.pad
        ];
    }

    // don't let axis have zero size, while still respecting tozero and nonnegative
    if(newRange[0] === newRange[1]) {
        if(ax.rangemode === 'tozero') {
            if(newRange[0] < 0) {
                newRange = [newRange[0], 0];
            }
            else if(newRange[0] > 0) {
                newRange = [0, newRange[0]];
            }
            else {
                newRange = [0, 1];
            }
        }
        else {
            newRange = [newRange[0] - 1, newRange[0] + 1];
            if(ax.rangemode === 'nonnegative') {
                newRange[0] = Math.max(0, newRange[0]);
            }
        }
    }

    // maintain reversal
    if(axReverse) newRange.reverse();

    return Lib.simpleMap(newRange, ax.l2r || Number);
};

axes.doAutoRange = function(ax) {
    if(!ax._length) ax.setScale();

    // TODO do we really need this?
    var hasDeps = (ax._min && ax._max && ax._min.length && ax._max.length);

    if(ax.autorange && hasDeps) {
        ax.range = axes.getAutoRange(ax);

        // doAutoRange will get called on fullLayout,
        // but we want to report its results back to layout
        var axIn = ax._gd.layout[ax._name];

        if(!axIn) ax._gd.layout[ax._name] = axIn = {};

        if(axIn !== ax) {
            axIn.range = ax.range.slice();
            axIn.autorange = ax.autorange;
        }
    }
};

// save a copy of the initial axis ranges in fullLayout
// use them in mode bar and dblclick events
axes.saveRangeInitial = function(gd, overwrite) {
    var axList = axes.list(gd, '', true),
        hasOneAxisChanged = false;

    for(var i = 0; i < axList.length; i++) {
        var ax = axList[i];

        var isNew = (ax._rangeInitial === undefined);
        var hasChanged = (
            isNew || !(
                ax.range[0] === ax._rangeInitial[0] &&
                ax.range[1] === ax._rangeInitial[1]
            )
        );

        if((isNew && ax.autorange === false) || (overwrite && hasChanged)) {
            ax._rangeInitial = ax.range.slice();
            hasOneAxisChanged = true;
        }
    }

    return hasOneAxisChanged;
};

// axes.expand: if autoranging, include new data in the outer limits
// for this axis
// data is an array of numbers (ie already run through ax.d2c)
// available options:
//      vpad: (number or number array) pad values (data value +-vpad)
//      ppad: (number or number array) pad pixels (pixel location +-ppad)
//      ppadplus, ppadminus, vpadplus, vpadminus:
//          separate padding for each side, overrides symmetric
//      padded: (boolean) add 5% padding to both ends
//          (unless one end is overridden by tozero)
//      tozero: (boolean) make sure to include zero if axis is linear,
//          and make it a tight bound if possible
axes.expand = function(ax, data, options) {
    if(!(ax.autorange || ax._needsExpand) || !data) return;
    if(!ax._min) ax._min = [];
    if(!ax._max) ax._max = [];
    if(!options) options = {};
    if(!ax._m) ax.setScale();

    var len = data.length,
        extrappad = options.padded ? ax._length * 0.05 : 0,
        tozero = options.tozero && (ax.type === 'linear' || ax.type === '-'),
        i, j, v, di, dmin, dmax,
        ppadiplus, ppadiminus, includeThis, vmin, vmax;

    function getPad(item) {
        if(Array.isArray(item)) {
            return function(i) { return Math.max(Number(item[i]||0), 0); };
        }
        else {
            var v = Math.max(Number(item||0), 0);
            return function() { return v; };
        }
    }
    var ppadplus = getPad((ax._m > 0 ?
            options.ppadplus : options.ppadminus) || options.ppad || 0),
        ppadminus = getPad((ax._m > 0 ?
            options.ppadminus : options.ppadplus) || options.ppad || 0),
        vpadplus = getPad(options.vpadplus || options.vpad),
        vpadminus = getPad(options.vpadminus || options.vpad);

    function addItem(i) {
        di = data[i];
        if(!isNumeric(di)) return;
        ppadiplus = ppadplus(i) + extrappad;
        ppadiminus = ppadminus(i) + extrappad;
        vmin = di - vpadminus(i);
        vmax = di + vpadplus(i);
        // special case for log axes: if vpad makes this object span
        // more than an order of mag, clip it to one order. This is so
        // we don't have non-positive errors or absurdly large lower
        // range due to rounding errors
        if(ax.type === 'log' && vmin < vmax / 10) { vmin = vmax / 10; }

        dmin = ax.c2l(vmin);
        dmax = ax.c2l(vmax);

        if(tozero) {
            dmin = Math.min(0, dmin);
            dmax = Math.max(0, dmax);
        }

        // In order to stop overflow errors, don't consider points
        // too close to the limits of js floating point
        function goodNumber(v) {
            return isNumeric(v) && Math.abs(v) < FP_SAFE;
        }

        if(goodNumber(dmin)) {
            includeThis = true;
            // take items v from ax._min and compare them to the
            // presently active point:
            // - if the item supercedes the new point, set includethis false
            // - if the new pt supercedes the item, delete it from ax._min
            for(j = 0; j < ax._min.length && includeThis; j++) {
                v = ax._min[j];
                if(v.val <= dmin && v.pad >= ppadiminus) {
                    includeThis = false;
                }
                else if(v.val >= dmin && v.pad <= ppadiminus) {
                    ax._min.splice(j, 1);
                    j--;
                }
            }
            if(includeThis) {
                ax._min.push({
                    val: dmin,
                    pad: (tozero && dmin === 0) ? 0 : ppadiminus
                });
            }
        }

        if(goodNumber(dmax)) {
            includeThis = true;
            for(j = 0; j < ax._max.length && includeThis; j++) {
                v = ax._max[j];
                if(v.val >= dmax && v.pad >= ppadiplus) {
                    includeThis = false;
                }
                else if(v.val <= dmax && v.pad <= ppadiplus) {
                    ax._max.splice(j, 1);
                    j--;
                }
            }
            if(includeThis) {
                ax._max.push({
                    val: dmax,
                    pad: (tozero && dmax === 0) ? 0 : ppadiplus
                });
            }
        }
    }

    // For efficiency covering monotonic or near-monotonic data,
    // check a few points at both ends first and then sweep
    // through the middle
    for(i = 0; i < 6; i++) addItem(i);
    for(i = len - 1; i > 5; i--) addItem(i);

};

axes.autoBin = function(data, ax, nbins, is2d, calendar) {
    var dataMin = Lib.aggNums(Math.min, null, data),
        dataMax = Lib.aggNums(Math.max, null, data);

    if(!calendar) calendar = ax.calendar;

    if(ax.type === 'category') {
        return {
            start: dataMin - 0.5,
            end: dataMax + 0.5,
            size: 1
        };
    }

    var size0;
    if(nbins) size0 = ((dataMax - dataMin) / nbins);
    else {
        // totally auto: scale off std deviation so the highest bin is
        // somewhat taller than the total number of bins, but don't let
        // the size get smaller than the 'nice' rounded down minimum
        // difference between values
        var distinctData = Lib.distinctVals(data),
            msexp = Math.pow(10, Math.floor(
                Math.log(distinctData.minDiff) / Math.LN10)),
            minSize = msexp * Lib.roundUp(
                distinctData.minDiff / msexp, [0.9, 1.9, 4.9, 9.9], true);
        size0 = Math.max(minSize, 2 * Lib.stdev(data) /
            Math.pow(data.length, is2d ? 0.25 : 0.4));
    }

    // piggyback off autotick code to make "nice" bin sizes
    var dummyAx;
    if(ax.type === 'log') {
        dummyAx = {
            type: 'linear',
            range: [dataMin, dataMax]
        };
    }
    else {
        dummyAx = {
            type: ax.type,
            range: Lib.simpleMap([dataMin, dataMax], ax.c2r, 0, calendar),
            calendar: calendar
        };
    }
    axes.setConvert(dummyAx);

    axes.autoTicks(dummyAx, size0);
    var binStart = axes.tickIncrement(
            axes.tickFirst(dummyAx), dummyAx.dtick, 'reverse', calendar),
        binEnd;

    // check for too many data points right at the edges of bins
    // (>50% within 1% of bin edges) or all data points integral
    // and offset the bins accordingly
    if(typeof dummyAx.dtick === 'number') {
        binStart = autoShiftNumericBins(binStart, data, dummyAx, dataMin, dataMax);

        var bincount = 1 + Math.floor((dataMax - binStart) / dummyAx.dtick);
        binEnd = binStart + bincount * dummyAx.dtick;
    }
    else {
        // month ticks - should be the only nonlinear kind we have at this point.
        // dtick (as supplied by axes.autoTick) only has nonlinear values on
        // date and log axes, but even if you display a histogram on a log axis
        // we bin it on a linear axis (which one could argue against, but that's
        // a separate issue)
        if(dummyAx.dtick.charAt(0) === 'M') {
            binStart = autoShiftMonthBins(binStart, data, dummyAx.dtick, dataMin, calendar);
        }

        // calculate the endpoint for nonlinear ticks - you have to
        // just increment until you're done
        binEnd = binStart;
        while(binEnd <= dataMax) {
            binEnd = axes.tickIncrement(binEnd, dummyAx.dtick, false, calendar);
        }
    }

    return {
        start: ax.c2r(binStart, 0, calendar),
        end: ax.c2r(binEnd, 0, calendar),
        size: dummyAx.dtick
    };
};


function autoShiftNumericBins(binStart, data, ax, dataMin, dataMax) {
    var edgecount = 0,
        midcount = 0,
        intcount = 0,
        blankCount = 0;

    function nearEdge(v) {
        // is a value within 1% of a bin edge?
        return (1 + (v - binStart) * 100 / ax.dtick) % 100 < 2;
    }

    for(var i = 0; i < data.length; i++) {
        if(data[i] % 1 === 0) intcount++;
        else if(!isNumeric(data[i])) blankCount++;

        if(nearEdge(data[i])) edgecount++;
        if(nearEdge(data[i] + ax.dtick / 2)) midcount++;
    }
    var dataCount = data.length - blankCount;

    if(intcount === dataCount && ax.type !== 'date') {
        // all integers: if bin size is <1, it's because
        // that was specifically requested (large nbins)
        // so respect that... but center the bins containing
        // integers on those integers
        if(ax.dtick < 1) {
            binStart = dataMin - 0.5 * ax.dtick;
        }
        // otherwise start half an integer down regardless of
        // the bin size, just enough to clear up endpoint
        // ambiguity about which integers are in which bins.
        else binStart -= 0.5;
    }
    else if(midcount < dataCount * 0.1) {
        if(edgecount > dataCount * 0.3 ||
                nearEdge(dataMin) || nearEdge(dataMax)) {
            // lots of points at the edge, not many in the middle
            // shift half a bin
            var binshift = ax.dtick / 2;
            binStart += (binStart + binshift < dataMin) ? binshift : -binshift;
        }
    }
    return binStart;
}


function autoShiftMonthBins(binStart, data, dtick, dataMin, calendar) {
    var stats = Lib.findExactDates(data, calendar);
    // number of data points that needs to be an exact value
    // to shift that increment to (near) the bin center
    var threshold = 0.8;

    if(stats.exactDays > threshold) {
        var numMonths = Number(dtick.substr(1));

        if((stats.exactYears > threshold) && (numMonths % 12 === 0)) {
            // The exact middle of a non-leap-year is 1.5 days into July
            // so if we start the bins here, all but leap years will
            // get hover-labeled as exact years.
            binStart = axes.tickIncrement(binStart, 'M6', 'reverse') + ONEDAY * 1.5;
        }
        else if(stats.exactMonths > threshold) {
            // Months are not as clean, but if we shift half the *longest*
            // month (31/2 days) then 31-day months will get labeled exactly
            // and shorter months will get labeled with the correct month
            // but shifted 12-36 hours into it.
            binStart = axes.tickIncrement(binStart, 'M1', 'reverse') + ONEDAY * 15.5;
        }
        else {
            // Shifting half a day is exact, but since these are month bins it
            // will always give a somewhat odd-looking label, until we do something
            // smarter like showing the bin boundaries (or the bounds of the actual
            // data in each bin)
            binStart -= ONEDAY / 2;
        }
        var nextBinStart = axes.tickIncrement(binStart, dtick);

        if(nextBinStart <= dataMin) return nextBinStart;
    }
    return binStart;
}

// ----------------------------------------------------
// Ticks and grids
// ----------------------------------------------------

// calculate the ticks: text, values, positioning
// if ticks are set to automatic, determine the right values (tick0,dtick)
// in any case, set tickround to # of digits to round tick labels to,
// or codes to this effect for log and date scales
axes.calcTicks = function calcTicks(ax) {
    var rng = Lib.simpleMap(ax.range, ax.r2l);

    // calculate max number of (auto) ticks to display based on plot size
    if(ax.tickmode === 'auto' || !ax.dtick) {
        var nt = ax.nticks,
            minPx;
        if(!nt) {
            if(ax.type === 'category') {
                minPx = ax.tickfont ? (ax.tickfont.size || 12) * 1.2 : 15;
                nt = ax._length / minPx;
            }
            else {
                minPx = ax._id.charAt(0) === 'y' ? 40 : 80;
                nt = Lib.constrain(ax._length / minPx, 4, 9) + 1;
            }
        }

        // add a couple of extra digits for filling in ticks when we
        // have explicit tickvals without tick text
        if(ax.tickmode === 'array') nt *= 100;

        axes.autoTicks(ax, Math.abs(rng[1] - rng[0]) / nt);
        // check for a forced minimum dtick
        if(ax._minDtick > 0 && ax.dtick < ax._minDtick * 2) {
            ax.dtick = ax._minDtick;
            ax.tick0 = ax.l2r(ax._forceTick0);
        }
    }

    // check for missing tick0
    if(!ax.tick0) {
        ax.tick0 = (ax.type === 'date') ? '2000-01-01' : 0;
    }

    // now figure out rounding of tick values
    autoTickRound(ax);

    // now that we've figured out the auto values for formatting
    // in case we're missing some ticktext, we can break out for array ticks
    if(ax.tickmode === 'array') return arrayTicks(ax);

    // find the first tick
    ax._tmin = axes.tickFirst(ax);

    // check for reversed axis
    var axrev = (rng[1] < rng[0]);

    // return the full set of tick vals
    var vals = [],
        // add a tiny bit so we get ticks which may have rounded out
        endtick = rng[1] * 1.0001 - rng[0] * 0.0001;
    if(ax.type === 'category') {
        endtick = (axrev) ? Math.max(-0.5, endtick) :
            Math.min(ax._categories.length - 0.5, endtick);
    }
    for(var x = ax._tmin;
            (axrev) ? (x >= endtick) : (x <= endtick);
            x = axes.tickIncrement(x, ax.dtick, axrev, ax.calendar)) {
        vals.push(x);

        // prevent infinite loops
        if(vals.length > 1000) break;
    }

    // save the last tick as well as first, so we can
    // show the exponent only on the last one
    ax._tmax = vals[vals.length - 1];

    // for showing the rest of a date when the main tick label is only the
    // latter part: ax._prevDateHead holds what we showed most recently.
    // Start with it cleared and mark that we're in calcTicks (ie calculating a
    // whole string of these so we should care what the previous date head was!)
    ax._prevDateHead = '';
    ax._inCalcTicks = true;

    var ticksOut = new Array(vals.length);
    for(var i = 0; i < vals.length; i++) ticksOut[i] = axes.tickText(ax, vals[i]);

    ax._inCalcTicks = false;

    return ticksOut;
};

function arrayTicks(ax) {
    var vals = ax.tickvals,
        text = ax.ticktext,
        ticksOut = new Array(vals.length),
        rng = Lib.simpleMap(ax.range, ax.r2l),
        r0expanded = rng[0] * 1.0001 - rng[1] * 0.0001,
        r1expanded = rng[1] * 1.0001 - rng[0] * 0.0001,
        tickMin = Math.min(r0expanded, r1expanded),
        tickMax = Math.max(r0expanded, r1expanded),
        vali,
        i,
        j = 0;

    // without a text array, just format the given values as any other ticks
    // except with more precision to the numbers
    if(!Array.isArray(text)) text = [];

    // make sure showing ticks doesn't accidentally add new categories
    var tickVal2l = ax.type === 'category' ? ax.d2l_noadd : ax.d2l;

    // array ticks on log axes always show the full number
    // (if no explicit ticktext overrides it)
    if(ax.type === 'log' && String(ax.dtick).charAt(0) !== 'L') {
        ax.dtick = 'L' + Math.pow(10, Math.floor(Math.min(ax.range[0], ax.range[1])) - 1);
    }

    for(i = 0; i < vals.length; i++) {
        vali = tickVal2l(vals[i]);
        if(vali > tickMin && vali < tickMax) {
            if(text[i] === undefined) ticksOut[j] = axes.tickText(ax, vali);
            else ticksOut[j] = tickTextObj(ax, vali, String(text[i]));
            j++;
        }
    }

    if(j < vals.length) ticksOut.splice(j, vals.length - j);

    return ticksOut;
}

var roundBase10 = [2, 5, 10],
    roundBase24 = [1, 2, 3, 6, 12],
    roundBase60 = [1, 2, 5, 10, 15, 30],
    // 2&3 day ticks are weird, but need something btwn 1&7
    roundDays = [1, 2, 3, 7, 14],
    // approx. tick positions for log axes, showing all (1) and just 1, 2, 5 (2)
    // these don't have to be exact, just close enough to round to the right value
    roundLog1 = [-0.046, 0, 0.301, 0.477, 0.602, 0.699, 0.778, 0.845, 0.903, 0.954, 1],
    roundLog2 = [-0.301, 0, 0.301, 0.699, 1];

function roundDTick(roughDTick, base, roundingSet) {
    return base * Lib.roundUp(roughDTick / base, roundingSet);
}

// autoTicks: calculate best guess at pleasant ticks for this axis
// inputs:
//      ax - an axis object
//      roughDTick - rough tick spacing (to be turned into a nice round number)
// outputs (into ax):
//   tick0: starting point for ticks (not necessarily on the graph)
//      usually 0 for numeric (=10^0=1 for log) or jan 1, 2000 for dates
//   dtick: the actual, nice round tick spacing, usually a little larger than roughDTick
//      if the ticks are spaced linearly (linear scale, categories,
//          log with only full powers, date ticks < month),
//          this will just be a number
//      months: M#
//      years: M# where # is 12*number of years
//      log with linear ticks: L# where # is the linear tick spacing
//      log showing powers plus some intermediates:
//          D1 shows all digits, D2 shows 2 and 5
axes.autoTicks = function(ax, roughDTick) {
    var base;

    if(ax.type === 'date') {
        ax.tick0 = Lib.dateTick0(ax.calendar);
        // the criteria below are all based on the rough spacing we calculate
        // being > half of the final unit - so precalculate twice the rough val
        var roughX2 = 2 * roughDTick;

        if(roughX2 > ONEAVGYEAR) {
            roughDTick /= ONEAVGYEAR;
            base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
            ax.dtick = 'M' + (12 * roundDTick(roughDTick, base, roundBase10));
        }
        else if(roughX2 > ONEAVGMONTH) {
            roughDTick /= ONEAVGMONTH;
            ax.dtick = 'M' + roundDTick(roughDTick, 1, roundBase24);
        }
        else if(roughX2 > ONEDAY) {
            ax.dtick = roundDTick(roughDTick, ONEDAY, roundDays);
            // get week ticks on sunday
            // this will also move the base tick off 2000-01-01 if dtick is
            // 2 or 3 days... but that's a weird enough case that we'll ignore it.
            ax.tick0 = Lib.dateTick0(ax.calendar, true);
        }
        else if(roughX2 > ONEHOUR) {
            ax.dtick = roundDTick(roughDTick, ONEHOUR, roundBase24);
        }
        else if(roughX2 > ONEMIN) {
            ax.dtick = roundDTick(roughDTick, ONEMIN, roundBase60);
        }
        else if(roughX2 > ONESEC) {
            ax.dtick = roundDTick(roughDTick, ONESEC, roundBase60);
        }
        else {
            // milliseconds
            base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
            ax.dtick = roundDTick(roughDTick, base, roundBase10);
        }
    }
    else if(ax.type === 'log') {
        ax.tick0 = 0;
        var rng = Lib.simpleMap(ax.range, ax.r2l);

        if(roughDTick > 0.7) {
            // only show powers of 10
            ax.dtick = Math.ceil(roughDTick);
        }
        else if(Math.abs(rng[1] - rng[0]) < 1) {
            // span is less than one power of 10
            var nt = 1.5 * Math.abs((rng[1] - rng[0]) / roughDTick);

            // ticks on a linear scale, labeled fully
            roughDTick = Math.abs(Math.pow(10, rng[1]) -
                Math.pow(10, rng[0])) / nt;
            base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
            ax.dtick = 'L' + roundDTick(roughDTick, base, roundBase10);
        }
        else {
            // include intermediates between powers of 10,
            // labeled with small digits
            // ax.dtick = "D2" (show 2 and 5) or "D1" (show all digits)
            ax.dtick = (roughDTick > 0.3) ? 'D2' : 'D1';
        }
    }
    else if(ax.type === 'category') {
        ax.tick0 = 0;
        ax.dtick = Math.ceil(Math.max(roughDTick, 1));
    }
    else {
        // auto ticks always start at 0
        ax.tick0 = 0;
        base = Math.pow(10, Math.floor(Math.log(roughDTick) / Math.LN10));
        ax.dtick = roundDTick(roughDTick, base, roundBase10);
    }

    // prevent infinite loops
    if(ax.dtick === 0) ax.dtick = 1;

    // TODO: this is from log axis histograms with autorange off
    if(!isNumeric(ax.dtick) && typeof ax.dtick !== 'string') {
        var olddtick = ax.dtick;
        ax.dtick = 1;
        throw 'ax.dtick error: ' + String(olddtick);
    }
};

// after dtick is already known, find tickround = precision
// to display in tick labels
//   for numeric ticks, integer # digits after . to round to
//   for date ticks, the last date part to show (y,m,d,H,M,S)
//      or an integer # digits past seconds
function autoTickRound(ax) {
    var dtick = ax.dtick;

    ax._tickexponent = 0;
    if(!isNumeric(dtick) && typeof dtick !== 'string') {
        dtick = 1;
    }

    if(ax.type === 'category') {
        ax._tickround = null;
    }
    if(ax.type === 'date') {
        // If tick0 is unusual, give tickround a bit more information
        // not necessarily *all* the information in tick0 though, if it's really odd
        // minimal string length for tick0: 'd' is 10, 'M' is 16, 'S' is 19
        // take off a leading minus (year < 0) and i (intercalary month) so length is consistent
        var tick0ms = ax.r2l(ax.tick0),
            tick0str = ax.l2r(tick0ms).replace(/(^-|i)/g, ''),
            tick0len = tick0str.length;

        if(String(dtick).charAt(0) === 'M') {
            // any tick0 more specific than a year: alway show the full date
            if(tick0len > 10 || tick0str.substr(5) !== '01-01') ax._tickround = 'd';
            // show the month unless ticks are full multiples of a year
            else ax._tickround = (+(dtick.substr(1)) % 12 === 0) ? 'y' : 'm';
        }
        else if((dtick >= ONEDAY && tick0len <= 10) || (dtick >= ONEDAY * 15)) ax._tickround = 'd';
        else if((dtick >= ONEMIN && tick0len <= 16) || (dtick >= ONEHOUR)) ax._tickround = 'M';
        else if((dtick >= ONESEC && tick0len <= 19) || (dtick >= ONEMIN)) ax._tickround = 'S';
        else {
            // tickround is a number of digits of fractional seconds
            // of any two adjacent ticks, at least one will have the maximum fractional digits
            // of all possible ticks - so take the max. length of tick0 and the next one
            var tick1len = ax.l2r(tick0ms + dtick).replace(/^-/, '').length;
            ax._tickround = Math.max(tick0len, tick1len) - 20;
        }
    }
    else if(isNumeric(dtick) || dtick.charAt(0) === 'L') {
        // linear or log (except D1, D2)
        var rng = ax.range.map(ax.r2d || Number);
        if(!isNumeric(dtick)) dtick = Number(dtick.substr(1));
        // 2 digits past largest digit of dtick
        ax._tickround = 2 - Math.floor(Math.log(dtick) / Math.LN10 + 0.01);

        var maxend = Math.max(Math.abs(rng[0]), Math.abs(rng[1]));

        var rangeexp = Math.floor(Math.log(maxend) / Math.LN10 + 0.01);
        if(Math.abs(rangeexp) > 3) {
            if(ax.exponentformat === 'SI' || ax.exponentformat === 'B') {
                ax._tickexponent = 3 * Math.round((rangeexp - 1) / 3);
            }
            else ax._tickexponent = rangeexp;
        }
    }
    // D1 or D2 (log)
    else ax._tickround = null;
}

// months and years don't have constant millisecond values
// (but a year is always 12 months so we only need months)
// log-scale ticks are also not consistently spaced, except
// for pure powers of 10
// numeric ticks always have constant differences, other datetime ticks
// can all be calculated as constant number of milliseconds
axes.tickIncrement = function(x, dtick, axrev, calendar) {
    var axSign = axrev ? -1 : 1;

    // includes linear, all dates smaller than month, and pure 10^n in log
    if(isNumeric(dtick)) return x + axSign * dtick;

    // everything else is a string, one character plus a number
    var tType = dtick.charAt(0),
        dtSigned = axSign * Number(dtick.substr(1));

    // Dates: months (or years - see Lib.incrementMonth)
    if(tType === 'M') return Lib.incrementMonth(x, dtSigned, calendar);

    // Log scales: Linear, Digits
    else if(tType === 'L') return Math.log(Math.pow(10, x) + dtSigned) / Math.LN10;

    // log10 of 2,5,10, or all digits (logs just have to be
    // close enough to round)
    else if(tType === 'D') {
        var tickset = (dtick === 'D2') ? roundLog2 : roundLog1,
            x2 = x + axSign * 0.01,
            frac = Lib.roundUp(Lib.mod(x2, 1), tickset, axrev);

        return Math.floor(x2) +
            Math.log(d3.round(Math.pow(10, frac), 1)) / Math.LN10;
    }
    else throw 'unrecognized dtick ' + String(dtick);
};

// calculate the first tick on an axis
axes.tickFirst = function(ax) {
    var r2l = ax.r2l || Number,
        rng = Lib.simpleMap(ax.range, r2l),
        axrev = rng[1] < rng[0],
        sRound = axrev ? Math.floor : Math.ceil,
        // add a tiny extra bit to make sure we get ticks
        // that may have been rounded out
        r0 = rng[0] * 1.0001 - rng[1] * 0.0001,
        dtick = ax.dtick,
        tick0 = r2l(ax.tick0);

    if(isNumeric(dtick)) {
        var tmin = sRound((r0 - tick0) / dtick) * dtick + tick0;

        // make sure no ticks outside the category list
        if(ax.type === 'category') {
            tmin = Lib.constrain(tmin, 0, ax._categories.length - 1);
        }
        return tmin;
    }

    var tType = dtick.charAt(0),
        dtNum = Number(dtick.substr(1));

    // Dates: months (or years)
    if(tType === 'M') {
        var cnt = 0,
            t0 = tick0,
            t1,
            mult,
            newDTick;

        // This algorithm should work for *any* nonlinear (but close to linear!)
        // tick spacing. Limit to 10 iterations, for gregorian months it's normally <=3.
        while(cnt < 10) {
            t1 = axes.tickIncrement(t0, dtick, axrev, ax.calendar);
            if((t1 - r0) * (t0 - r0) <= 0) {
                // t1 and t0 are on opposite sides of r0! we've succeeded!
                if(axrev) return Math.min(t0, t1);
                return Math.max(t0, t1);
            }
            mult = (r0 - ((t0 + t1) / 2)) / (t1 - t0);
            newDTick = tType + ((Math.abs(Math.round(mult)) || 1) * dtNum);
            t0 = axes.tickIncrement(t0, newDTick, mult < 0 ? !axrev : axrev, ax.calendar);
            cnt++;
        }
        Lib.error('tickFirst did not converge', ax);
        return t0;
    }

    // Log scales: Linear, Digits
    else if(tType === 'L') {
        return Math.log(sRound(
            (Math.pow(10, r0) - tick0) / dtNum) * dtNum + tick0) / Math.LN10;
    }
    else if(tType === 'D') {
        var tickset = (dtick === 'D2') ? roundLog2 : roundLog1,
            frac = Lib.roundUp(Lib.mod(r0, 1), tickset, axrev);

        return Math.floor(r0) +
            Math.log(d3.round(Math.pow(10, frac), 1)) / Math.LN10;
    }
    else throw 'unrecognized dtick ' + String(dtick);
};

// draw the text for one tick.
// px,py are the location on gd.paper
// prefix is there so the x axis ticks can be dropped a line
// ax is the axis layout, x is the tick value
// hover is a (truthy) flag for whether to show numbers with a bit
// more precision for hovertext
axes.tickText = function(ax, x, hover) {
    var out = tickTextObj(ax, x),
        hideexp,
        arrayMode = ax.tickmode === 'array',
        extraPrecision = hover || arrayMode,
        i,
        tickVal2l = ax.type === 'category' ? ax.d2l_noadd : ax.d2l;

    if(arrayMode && Array.isArray(ax.ticktext)) {
        var rng = Lib.simpleMap(ax.range, ax.r2l),
            minDiff = Math.abs(rng[1] - rng[0]) / 10000;
        for(i = 0; i < ax.ticktext.length; i++) {
            if(Math.abs(x - tickVal2l(ax.tickvals[i])) < minDiff) break;
        }
        if(i < ax.ticktext.length) {
            out.text = String(ax.ticktext[i]);
            return out;
        }
    }

    function isHidden(showAttr) {
        var first_or_last;

        if(showAttr === undefined) return true;
        if(hover) return showAttr === 'none';

        first_or_last = {
            first: ax._tmin,
            last: ax._tmax
        }[showAttr];

        return showAttr !== 'all' && x !== first_or_last;
    }

    hideexp = ax.exponentformat !== 'none' && isHidden(ax.showexponent) ? 'hide' : '';

    if(ax.type === 'date') formatDate(ax, out, hover, extraPrecision);
    else if(ax.type === 'log') formatLog(ax, out, hover, extraPrecision, hideexp);
    else if(ax.type === 'category') formatCategory(ax, out);
    else formatLinear(ax, out, hover, extraPrecision, hideexp);

    // add prefix and suffix
    if(ax.tickprefix && !isHidden(ax.showtickprefix)) out.text = ax.tickprefix + out.text;
    if(ax.ticksuffix && !isHidden(ax.showticksuffix)) out.text += ax.ticksuffix;

    return out;
};

function tickTextObj(ax, x, text) {
    var tf = ax.tickfont || ax._gd._fullLayout.font;

    return {
        x: x,
        dx: 0,
        dy: 0,
        text: text || '',
        fontSize: tf.size,
        font: tf.family,
        fontColor: tf.color
    };
}

function formatDate(ax, out, hover, extraPrecision) {
    var tr = ax._tickround,
        fmt = (hover && ax.hoverformat) || ax.tickformat;

    if(extraPrecision) {
        // second or sub-second precision: extra always shows max digits.
        // for other fields, extra precision just adds one field.
        if(isNumeric(tr)) tr = 4;
        else tr = {y: 'm', m: 'd', d: 'M', M: 'S', S: 4}[tr];
    }

    var dateStr = Lib.formatDate(out.x, fmt, tr, ax.calendar),
        headStr;

    var splitIndex = dateStr.indexOf('\n');
    if(splitIndex !== -1) {
        headStr = dateStr.substr(splitIndex + 1);
        dateStr = dateStr.substr(0, splitIndex);
    }

    if(extraPrecision) {
        // if extraPrecision led to trailing zeros, strip them off
        // actually, this can lead to removing even more zeros than
        // in the original rounding, but that's fine because in these
        // contexts uniformity is not so important (if there's even
        // anything to be uniform with!)

        // can we remove the whole time part?
        if(dateStr === '00:00:00' || dateStr === '00:00') {
            dateStr = headStr;
            headStr = '';
        }
        else if(dateStr.length === 8) {
            // strip off seconds if they're zero (zero fractional seconds
            // are already omitted)
            // but we never remove minutes and leave just hours
            dateStr = dateStr.replace(/:00$/, '');
        }
    }

    if(headStr) {
        if(hover) {
            // hover puts it all on one line, so headPart works best up front
            // except for year headPart: turn this into "Jan 1, 2000" etc.
            if(tr === 'd') dateStr += ', ' + headStr;
            else dateStr = headStr + (dateStr ? ', ' + dateStr : '');
        }
        else if(!ax._inCalcTicks || (headStr !== ax._prevDateHead)) {
            dateStr += '<br>' + headStr;
            ax._prevDateHead = headStr;
        }
    }

    out.text = dateStr;
}

function formatLog(ax, out, hover, extraPrecision, hideexp) {
    var dtick = ax.dtick,
        x = out.x;
    if(extraPrecision && ((typeof dtick !== 'string') || dtick.charAt(0) !== 'L')) dtick = 'L3';

    if(ax.tickformat || (typeof dtick === 'string' && dtick.charAt(0) === 'L')) {
        out.text = numFormat(Math.pow(10, x), ax, hideexp, extraPrecision);
    }
    else if(isNumeric(dtick) || ((dtick.charAt(0) === 'D') && (Lib.mod(x + 0.01, 1) < 0.1))) {
        if(['e', 'E', 'power'].indexOf(ax.exponentformat) !== -1) {
            var p = Math.round(x);
            if(p === 0) out.text = 1;
            else if(p === 1) out.text = '10';
            else if(p > 1) out.text = '10<sup>' + p + '</sup>';
            else out.text = '10<sup>\u2212' + -p + '</sup>';

            out.fontSize *= 1.25;
        }
        else {
            out.text = numFormat(Math.pow(10, x), ax, '', 'fakehover');
            if(dtick === 'D1' && ax._id.charAt(0) === 'y') {
                out.dy -= out.fontSize / 6;
            }
        }
    }
    else if(dtick.charAt(0) === 'D') {
        out.text = String(Math.round(Math.pow(10, Lib.mod(x, 1))));
        out.fontSize *= 0.75;
    }
    else throw 'unrecognized dtick ' + String(dtick);

    // if 9's are printed on log scale, move the 10's away a bit
    if(ax.dtick === 'D1') {
        var firstChar = String(out.text).charAt(0);
        if(firstChar === '0' || firstChar === '1') {
            if(ax._id.charAt(0) === 'y') {
                out.dx -= out.fontSize / 4;
            }
            else {
                out.dy += out.fontSize / 2;
                out.dx += (ax.range[1] > ax.range[0] ? 1 : -1) *
                    out.fontSize * (x < 0 ? 0.5 : 0.25);
            }
        }
    }
}

function formatCategory(ax, out) {
    var tt = ax._categories[Math.round(out.x)];
    if(tt === undefined) tt = '';
    out.text = String(tt);
}

function formatLinear(ax, out, hover, extraPrecision, hideexp) {
    // don't add an exponent to zero if we're showing all exponents
    // so the only reason you'd show an exponent on zero is if it's the
    // ONLY tick to get an exponent (first or last)
    if(ax.showexponent === 'all' && Math.abs(out.x / ax.dtick) < 1e-6) {
        hideexp = 'hide';
    }
    out.text = numFormat(out.x, ax, hideexp, extraPrecision);
}

// format a number (tick value) according to the axis settings
// new, more reliable procedure than d3.round or similar:
// add half the rounding increment, then stringify and truncate
// also automatically switch to sci. notation
var SIPREFIXES = ['f', 'p', 'n', 'μ', 'm', '', 'k', 'M', 'G', 'T'];

function numFormat(v, ax, fmtoverride, hover) {
        // negative?
    var isNeg = v < 0,
        // max number of digits past decimal point to show
        tickRound = ax._tickround,
        exponentFormat = fmtoverride || ax.exponentformat || 'B',
        exponent = ax._tickexponent,
        tickformat = ax.tickformat,
        separatethousands = ax.separatethousands;

    // special case for hover: set exponent just for this value, and
    // add a couple more digits of precision over tick labels
    if(hover) {
        // make a dummy axis obj to get the auto rounding and exponent
        var ah = {
            exponentformat: ax.exponentformat,
            dtick: ax.showexponent === 'none' ? ax.dtick :
                (isNumeric(v) ? Math.abs(v) || 1 : 1),
            // if not showing any exponents, don't change the exponent
            // from what we calculate
            range: ax.showexponent === 'none' ? ax.range.map(ax.r2d) : [0, v || 1]
        };
        autoTickRound(ah);
        tickRound = (Number(ah._tickround) || 0) + 4;
        exponent = ah._tickexponent;
        if(ax.hoverformat) tickformat = ax.hoverformat;
    }

    if(tickformat) return d3.format(tickformat)(v).replace(/-/g, '\u2212');

    // 'epsilon' - rounding increment
    var e = Math.pow(10, -tickRound) / 2;

    // exponentFormat codes:
    // 'e' (1.2e+6, default)
    // 'E' (1.2E+6)
    // 'SI' (1.2M)
    // 'B' (same as SI except 10^9=B not G)
    // 'none' (1200000)
    // 'power' (1.2x10^6)
    // 'hide' (1.2, use 3rd argument=='hide' to eg
    //      only show exponent on last tick)
    if(exponentFormat === 'none') exponent = 0;

    // take the sign out, put it back manually at the end
    // - makes cases easier
    v = Math.abs(v);
    if(v < e) {
        // 0 is just 0, but may get exponent if it's the last tick
        v = '0';
        isNeg = false;
    }
    else {
        v += e;
        // take out a common exponent, if any
        if(exponent) {
            v *= Math.pow(10, -exponent);
            tickRound += exponent;
        }
        // round the mantissa
        if(tickRound === 0) v = String(Math.floor(v));
        else if(tickRound < 0) {
            v = String(Math.round(v));
            v = v.substr(0, v.length + tickRound);
            for(var i = tickRound; i < 0; i++) v += '0';
        }
        else {
            v = String(v);
            var dp = v.indexOf('.') + 1;
            if(dp) v = v.substr(0, dp + tickRound).replace(/\.?0+$/, '');
        }
        // insert appropriate decimal point and thousands separator
        v = Lib.numSeparate(v, ax._gd._fullLayout.separators, separatethousands);
    }

    // add exponent
    if(exponent && exponentFormat !== 'hide') {
        var signedExponent;
        if(exponent < 0) signedExponent = '\u2212' + -exponent;
        else if(exponentFormat !== 'power') signedExponent = '+' + exponent;
        else signedExponent = String(exponent);

        if(exponentFormat === 'e' ||
                ((exponentFormat === 'SI' || exponentFormat === 'B') &&
                 (exponent > 12 || exponent < -15))) {
            v += 'e' + signedExponent;
        }
        else if(exponentFormat === 'E') {
            v += 'E' + signedExponent;
        }
        else if(exponentFormat === 'power') {
            v += '×10<sup>' + signedExponent + '</sup>';
        }
        else if(exponentFormat === 'B' && exponent === 9) {
            v += 'B';
        }
        else if(exponentFormat === 'SI' || exponentFormat === 'B') {
            v += SIPREFIXES[exponent / 3 + 5];
        }
    }

    // put sign back in and return
    // replace standard minus character (which is technically a hyphen)
    // with a true minus sign
    if(isNeg) return '\u2212' + v;
    return v;
}


axes.subplotMatch = /^x([0-9]*)y([0-9]*)$/;

// getSubplots - extract all combinations of axes we need to make plots for
// as an array of items like 'xy', 'x2y', 'x2y2'...
// sorted by x (x,x2,x3...) then y
// optionally restrict to only subplots containing axis object ax
// looks both for combinations of x and y found in the data
// and at axes and their anchors
axes.getSubplots = function(gd, ax) {
    var subplots = [];
    var i, j, sp;

    // look for subplots in the data
    var data = gd._fullData || gd.data || [];

    for(i = 0; i < data.length; i++) {
        var trace = data[i];

        if(trace.visible === false || trace.visible === 'legendonly' ||
            !(Registry.traceIs(trace, 'cartesian') || Registry.traceIs(trace, 'gl2d'))
        ) continue;

        var xId = trace.xaxis || 'x',
            yId = trace.yaxis || 'y';
        sp = xId + yId;

        if(subplots.indexOf(sp) === -1) subplots.push(sp);
    }

    // look for subplots in the axes/anchors, so that we at least draw all axes
    var axesList = axes.list(gd, '', true);

    function hasAx2(sp, ax2) {
        return sp.indexOf(ax2._id) !== -1;
    }

    for(i = 0; i < axesList.length; i++) {
        var ax2 = axesList[i],
            ax2Letter = ax2._id.charAt(0),
            ax3Id = (ax2.anchor === 'free') ?
                ((ax2Letter === 'x') ? 'y' : 'x') :
                ax2.anchor,
            ax3 = axes.getFromId(gd, ax3Id);

        // look if ax2 is already represented in the data
        var foundAx2 = false;
        for(j = 0; j < subplots.length; j++) {
            if(hasAx2(subplots[j], ax2)) {
                foundAx2 = true;
                break;
            }
        }

        // ignore free axes that already represented in the data
        if(ax2.anchor === 'free' && foundAx2) continue;

        // ignore anchor-less axes
        if(!ax3) continue;

        sp = (ax2Letter === 'x') ?
            ax2._id + ax3._id :
            ax3._id + ax2._id;

        if(subplots.indexOf(sp) === -1) subplots.push(sp);
    }

    // filter invalid subplots
    var spMatch = axes.subplotMatch,
        allSubplots = [];

    for(i = 0; i < subplots.length; i++) {
        sp = subplots[i];
        if(spMatch.test(sp)) allSubplots.push(sp);
    }

    // sort the subplot ids
    allSubplots.sort(function(a, b) {
        var aMatch = a.match(spMatch),
            bMatch = b.match(spMatch);

        if(aMatch[1] === bMatch[1]) {
            return +(aMatch[2] || 1) - (bMatch[2] || 1);
        }

        return +(aMatch[1]||0) - (bMatch[1]||0);
    });

    if(ax) return axes.findSubplotsWithAxis(allSubplots, ax);
    return allSubplots;
};

// find all subplots with axis 'ax'
axes.findSubplotsWithAxis = function(subplots, ax) {
    var axMatch = new RegExp(
        (ax._id.charAt(0) === 'x') ? ('^' + ax._id + 'y') : (ax._id + '$')
    );
    var subplotsWithAxis = [];

    for(var i = 0; i < subplots.length; i++) {
        var sp = subplots[i];
        if(axMatch.test(sp)) subplotsWithAxis.push(sp);
    }

    return subplotsWithAxis;
};

// makeClipPaths: prepare clipPaths for all single axes and all possible xy pairings
axes.makeClipPaths = function(gd) {
    var fullLayout = gd._fullLayout,
        defs = fullLayout._defs,
        fullWidth = {_offset: 0, _length: fullLayout.width, _id: ''},
        fullHeight = {_offset: 0, _length: fullLayout.height, _id: ''},
        xaList = axes.list(gd, 'x', true),
        yaList = axes.list(gd, 'y', true),
        clipList = [],
        i,
        j;

    for(i = 0; i < xaList.length; i++) {
        clipList.push({x: xaList[i], y: fullHeight});
        for(j = 0; j < yaList.length; j++) {
            if(i === 0) clipList.push({x: fullWidth, y: yaList[j]});
            clipList.push({x: xaList[i], y: yaList[j]});
        }
    }

    var defGroup = defs.selectAll('g.clips')
        .data([0]);

    defGroup.enter().append('g')
        .classed('clips', true);

    // selectors don't work right with camelCase tags,
    // have to use class instead
    // https://groups.google.com/forum/#!topic/d3-js/6EpAzQ2gU9I
    var axClips = defGroup.selectAll('.axesclip')
        .data(clipList, function(d) { return d.x._id + d.y._id; });

    axClips.enter().append('clipPath')
        .classed('axesclip', true)
        .attr('id', function(d) { return 'clip' + fullLayout._uid + d.x._id + d.y._id; })
      .append('rect');

    axClips.exit().remove();

    axClips.each(function(d) {
        d3.select(this).select('rect').attr({
            x: d.x._offset || 0,
            y: d.y._offset || 0,
            width: d.x._length || 1,
            height: d.y._length || 1
        });
    });
};


// doTicks: draw ticks, grids, and tick labels
// axid: 'x', 'y', 'x2' etc,
//     blank to do all,
//     'redraw' to force full redraw, and reset:
//          ax._r (stored range for use by zoom/pan)
//          ax._rl (stored linearized range for use by zoom/pan)
//     or can pass in an axis object directly
axes.doTicks = function(gd, axid, skipTitle) {
    var fullLayout = gd._fullLayout,
        ax,
        independent = false;

    // allow passing an independent axis object instead of id
    if(typeof axid === 'object') {
        ax = axid;
        axid = ax._id;
        independent = true;
    }
    else {
        ax = axes.getFromId(gd, axid);

        if(axid === 'redraw') {
            fullLayout._paper.selectAll('g.subplot').each(function(subplot) {
                var plotinfo = fullLayout._plots[subplot],
                    xa = plotinfo.xaxis,
                    ya = plotinfo.yaxis;

                plotinfo.xaxislayer
                    .selectAll('.' + xa._id + 'tick').remove();
                plotinfo.yaxislayer
                    .selectAll('.' + ya._id + 'tick').remove();
                plotinfo.gridlayer
                    .selectAll('path').remove();
                plotinfo.zerolinelayer
                    .selectAll('path').remove();
            });
        }

        if(!axid || axid === 'redraw') {
            return Lib.syncOrAsync(axes.list(gd, '', true).map(function(ax) {
                return function() {
                    if(!ax._id) return;
                    var axDone = axes.doTicks(gd, ax._id);
                    if(axid === 'redraw') {
                        ax._r = ax.range.slice();
                        ax._rl = Lib.simpleMap(ax._r, ax.r2l);
                    }
                    return axDone;
                };
            }));
        }
    }

    // make sure we only have allowed options for exponents
    // (others can make confusing errors)
    if(!ax.tickformat) {
        if(['none', 'e', 'E', 'power', 'SI', 'B'].indexOf(ax.exponentformat) === -1) {
            ax.exponentformat = 'e';
        }
        if(['all', 'first', 'last', 'none'].indexOf(ax.showexponent) === -1) {
            ax.showexponent = 'all';
        }
    }

    // set scaling to pixels
    ax.setScale();

    var axletter = axid.charAt(0),
        counterLetter = axes.counterLetter(axid),
        vals = axes.calcTicks(ax),
        datafn = function(d) { return d.text + d.x + ax.mirror; },
        tcls = axid + 'tick',
        gcls = axid + 'grid',
        zcls = axid + 'zl',
        pad = (ax.linewidth || 1) / 2,
        labelStandoff =
            (ax.ticks === 'outside' ? ax.ticklen : 1) + (ax.linewidth || 0),
        labelShift = 0,
        gridWidth = Drawing.crispRound(gd, ax.gridwidth, 1),
        zeroLineWidth = Drawing.crispRound(gd, ax.zerolinewidth, gridWidth),
        tickWidth = Drawing.crispRound(gd, ax.tickwidth, 1),
        sides, transfn, tickpathfn,
        i;

    if(ax._counterangle && ax.ticks === 'outside') {
        var caRad = ax._counterangle * Math.PI / 180;
        labelStandoff = ax.ticklen * Math.cos(caRad) + (ax.linewidth || 0);
        labelShift = ax.ticklen * Math.sin(caRad);
    }

    // positioning arguments for x vs y axes
    if(axletter === 'x') {
        sides = ['bottom', 'top'];
        transfn = function(d) {
            return 'translate(' + ax.l2p(d.x) + ',0)';
        };
        tickpathfn = function(shift, len) {
            if(ax._counterangle) {
                var caRad = ax._counterangle * Math.PI / 180;
                return 'M0,' + shift + 'l' + (Math.sin(caRad) * len) + ',' + (Math.cos(caRad) * len);
            }
            else return 'M0,' + shift + 'v' + len;
        };
    }
    else if(axletter === 'y') {
        sides = ['left', 'right'];
        transfn = function(d) {
            return 'translate(0,' + ax.l2p(d.x) + ')';
        };
        tickpathfn = function(shift, len) {
            if(ax._counterangle) {
                var caRad = ax._counterangle * Math.PI / 180;
                return 'M' + shift + ',0l' + (Math.cos(caRad) * len) + ',' + (-Math.sin(caRad) * len);
            }
            else return 'M' + shift + ',0h' + len;
        };
    }
    else {
        Lib.warn('Unrecognized doTicks axis:', axid);
        return;
    }
    var axside = ax.side || sides[0],
    // which direction do the side[0], side[1], and free ticks go?
    // then we flip if outside XOR y axis
        ticksign = [-1, 1, axside === sides[1] ? 1 : -1];
    if((ax.ticks !== 'inside') === (axletter === 'x')) {
        ticksign = ticksign.map(function(v) { return -v; });
    }

    // remove zero lines, grid lines, and inside ticks if they're within
    // 1 pixel of the end
    // The key case here is removing zero lines when the axis bound is zero.
    function clipEnds(d) {
        var p = ax.l2p(d.x);
        return (p > 1 && p < ax._length - 1);
    }
    var valsClipped = vals.filter(clipEnds);

    function drawTicks(container, tickpath) {
        var ticks = container.selectAll('path.' + tcls)
            .data(ax.ticks === 'inside' ? valsClipped : vals, datafn);
        if(tickpath && ax.ticks) {
            ticks.enter().append('path').classed(tcls, 1).classed('ticks', 1)
                .classed('crisp', 1)
                .call(Color.stroke, ax.tickcolor)
                .style('stroke-width', tickWidth + 'px')
                .attr('d', tickpath);
            ticks.attr('transform', transfn);
            ticks.exit().remove();
        }
        else ticks.remove();
    }

    function drawLabels(container, position) {
        // tick labels - for now just the main labels.
        // TODO: mirror labels, esp for subplots
        var tickLabels = container.selectAll('g.' + tcls).data(vals, datafn);
        if(!ax.showticklabels || !isNumeric(position)) {
            tickLabels.remove();
            drawAxTitle(axid);
            return;
        }

        var labelx, labely, labelanchor, labelpos0, flipit;
        if(axletter === 'x') {
            flipit = (axside === 'bottom') ? 1 : -1;
            labelx = function(d) { return d.dx + labelShift * flipit; };
            labelpos0 = position + (labelStandoff + pad) * flipit;
            labely = function(d) {
                return d.dy + labelpos0 + d.fontSize *
                    ((axside === 'bottom') ? 1 : -0.5);
            };
            labelanchor = function(angle) {
                if(!isNumeric(angle) || angle === 0 || angle === 180) {
                    return 'middle';
                }
                return (angle * flipit < 0) ? 'end' : 'start';
            };
        }
        else {
            flipit = (axside === 'right') ? 1 : -1;
            labely = function(d) { return d.dy + d.fontSize / 2 - labelShift * flipit; };
            labelx = function(d) {
                return d.dx + position + (labelStandoff + pad +
                    ((Math.abs(ax.tickangle) === 90) ? d.fontSize / 2 : 0)) * flipit;
            };
            labelanchor = function(angle) {
                if(isNumeric(angle) && Math.abs(angle) === 90) {
                    return 'middle';
                }
                return axside === 'right' ? 'start' : 'end';
            };
        }
        var maxFontSize = 0,
            autoangle = 0,
            labelsReady = [];
        tickLabels.enter().append('g').classed(tcls, 1)
            .append('text')
                // only so tex has predictable alignment that we can
                // alter later
                .attr('text-anchor', 'middle')
                .each(function(d) {
                    var thisLabel = d3.select(this),
                        newPromise = gd._promises.length;
                    thisLabel
                        .call(Drawing.setPosition, labelx(d), labely(d))
                        .call(Drawing.font, d.font, d.fontSize, d.fontColor)
                        .text(d.text)
                        .call(svgTextUtils.convertToTspans);
                    newPromise = gd._promises[newPromise];
                    if(newPromise) {
                        // if we have an async label, we'll deal with that
                        // all here so take it out of gd._promises and
                        // instead position the label and promise this in
                        // labelsReady
                        labelsReady.push(gd._promises.pop().then(function() {
                            positionLabels(thisLabel, ax.tickangle);
                        }));
                    }
                    else {
                        // sync label: just position it now.
                        positionLabels(thisLabel, ax.tickangle);
                    }
                });
        tickLabels.exit().remove();

        tickLabels.each(function(d) {
            maxFontSize = Math.max(maxFontSize, d.fontSize);
        });

        function positionLabels(s, angle) {
            s.each(function(d) {
                var anchor = labelanchor(angle);
                var thisLabel = d3.select(this),
                    mathjaxGroup = thisLabel.select('.text-math-group'),
                    transform = transfn(d) +
                        ((isNumeric(angle) && +angle !== 0) ?
                        (' rotate(' + angle + ',' + labelx(d) + ',' +
                            (labely(d) - d.fontSize / 2) + ')') :
                        '');
                if(mathjaxGroup.empty()) {
                    var txt = thisLabel.select('text').attr({
                        transform: transform,
                        'text-anchor': anchor
                    });

                    if(!txt.empty()) {
                        txt.selectAll('tspan.line').attr({
                            x: txt.attr('x'),
                            y: txt.attr('y')
                        });
                    }
                }
                else {
                    var mjShift =
                        Drawing.bBox(mathjaxGroup.node()).width *
                            {end: -0.5, start: 0.5}[anchor];
                    mathjaxGroup.attr('transform', transform +
                        (mjShift ? 'translate(' + mjShift + ',0)' : ''));
                }
            });
        }

        // make sure all labels are correctly positioned at their base angle
        // the positionLabels call above is only for newly drawn labels.
        // do this without waiting, using the last calculated angle to
        // minimize flicker, then do it again when we know all labels are
        // there, putting back the prescribed angle to check for overlaps.
        positionLabels(tickLabels, ax._lastangle || ax.tickangle);

        function allLabelsReady() {
            return labelsReady.length && Promise.all(labelsReady);
        }

        function fixLabelOverlaps() {
            positionLabels(tickLabels, ax.tickangle);

            // check for auto-angling if x labels overlap
            // don't auto-angle at all for log axes with
            // base and digit format
            if(axletter === 'x' && !isNumeric(ax.tickangle) &&
                    (ax.type !== 'log' || String(ax.dtick).charAt(0) !== 'D')) {
                var lbbArray = [];
                tickLabels.each(function(d) {
                    var s = d3.select(this),
                        thisLabel = s.select('.text-math-group'),
                        x = ax.l2p(d.x);
                    if(thisLabel.empty()) thisLabel = s.select('text');

                    var bb = Drawing.bBox(thisLabel.node());

                    lbbArray.push({
                        // ignore about y, just deal with x overlaps
                        top: 0,
                        bottom: 10,
                        height: 10,
                        left: x - bb.width / 2,
                        // impose a 2px gap
                        right: x + bb.width / 2 + 2,
                        width: bb.width + 2
                    });
                });
                for(i = 0; i < lbbArray.length - 1; i++) {
                    if(Lib.bBoxIntersect(lbbArray[i], lbbArray[i + 1])) {
                        // any overlap at all - set 30 degrees
                        autoangle = 30;
                        break;
                    }
                }
                if(autoangle) {
                    var tickspacing = Math.abs(
                            (vals[vals.length - 1].x - vals[0].x) * ax._m
                        ) / (vals.length - 1);
                    if(tickspacing < maxFontSize * 2.5) {
                        autoangle = 90;
                    }
                    positionLabels(tickLabels, autoangle);
                }
                ax._lastangle = autoangle;
            }

            // update the axis title
            // (so it can move out of the way if needed)
            // TODO: separate out scoot so we don't need to do
            // a full redraw of the title (mostly relevant for MathJax)
            drawAxTitle(axid);
            return axid + ' done';
        }

        function calcBoundingBox() {
            ax._boundingBox = container.node().getBoundingClientRect();
        }

        var done = Lib.syncOrAsync([
            allLabelsReady,
            fixLabelOverlaps,
            calcBoundingBox
        ]);
        if(done && done.then) gd._promises.push(done);
        return done;
    }

    function drawAxTitle(axid) {
        if(skipTitle) return;

        // now this only applies to regular cartesian axes; colorbars and
        // others ALWAYS call doTicks with skipTitle=true so they can
        // configure their own titles.
        var ax = axisIds.getFromId(gd, axid),
            avoidSelection = d3.select(gd).selectAll('g.' + axid + 'tick'),
            avoid = {
                selection: avoidSelection,
                side: ax.side
            },
            axLetter = axid.charAt(0),
            gs = gd._fullLayout._size,
            offsetBase = 1.5,
            fontSize = ax.titlefont.size,
            transform,
            counterAxis,
            x,
            y;
        if(avoidSelection.size()) {
            var avoidTransform = d3.select(avoidSelection.node().parentNode)
                .attr('transform')
                .match(/translate\(([-\.\d]+),([-\.\d]+)\)/);
            if(avoidTransform) {
                avoid.offsetLeft = +avoidTransform[1];
                avoid.offsetTop = +avoidTransform[2];
            }
        }

        if(axLetter === 'x') {
            counterAxis = (ax.anchor === 'free') ?
                {_offset: gs.t + (1 - (ax.position || 0)) * gs.h, _length: 0} :
                axisIds.getFromId(gd, ax.anchor);

            x = ax._offset + ax._length / 2;
            y = counterAxis._offset + ((ax.side === 'top') ?
                -10 - fontSize * (offsetBase + (ax.showticklabels ? 1 : 0)) :
                counterAxis._length + 10 +
                    fontSize * (offsetBase + (ax.showticklabels ? 1.5 : 0.5)));

            if(ax.rangeslider && ax.rangeslider.visible && ax._boundingBox) {
                y += (fullLayout.height - fullLayout.margin.b - fullLayout.margin.t) *
                    ax.rangeslider.thickness + ax._boundingBox.height;
            }

            if(!avoid.side) avoid.side = 'bottom';
        }
        else {
            counterAxis = (ax.anchor === 'free') ?
                {_offset: gs.l + (ax.position || 0) * gs.w, _length: 0} :
                axisIds.getFromId(gd, ax.anchor);

            y = ax._offset + ax._length / 2;
            x = counterAxis._offset + ((ax.side === 'right') ?
                counterAxis._length + 10 +
                    fontSize * (offsetBase + (ax.showticklabels ? 1 : 0.5)) :
                -10 - fontSize * (offsetBase + (ax.showticklabels ? 0.5 : 0)));

            transform = {rotate: '-90', offset: 0};
            if(!avoid.side) avoid.side = 'left';
        }

        Titles.draw(gd, axid + 'title', {
            propContainer: ax,
            propName: ax._name + '.title',
            dfltName: axLetter.toUpperCase() + ' axis',
            avoid: avoid,
            transform: transform,
            attributes: {x: x, y: y, 'text-anchor': 'middle'}
        });
    }

    function traceHasBarsOrFill(trace, subplot) {
        if(trace.visible !== true || trace.xaxis + trace.yaxis !== subplot) return false;
        if(Registry.traceIs(trace, 'bar') && trace.orientation === {x: 'h', y: 'v'}[axletter]) return true;
        return trace.fill && trace.fill.charAt(trace.fill.length - 1) === axletter;
    }

    function drawGrid(plotinfo, counteraxis, subplot) {
        var gridcontainer = plotinfo.gridlayer,
            zlcontainer = plotinfo.zerolinelayer,
            gridvals = plotinfo['hidegrid' + axletter] ? [] : valsClipped,
            gridpath = ax._gridpath ||
                'M0,0' + ((axletter === 'x') ? 'v' : 'h') + counteraxis._length,
            grid = gridcontainer.selectAll('path.' + gcls)
                .data((ax.showgrid === false) ? [] : gridvals, datafn);
        grid.enter().append('path').classed(gcls, 1)
            .classed('crisp', 1)
            .attr('d', gridpath)
            .each(function(d) {
                if(ax.zeroline && (ax.type === 'linear' || ax.type === '-') &&
                        Math.abs(d.x) < ax.dtick / 100) {
                    d3.select(this).remove();
                }
            });
        grid.attr('transform', transfn)
            .call(Color.stroke, ax.gridcolor || '#ddd')
            .style('stroke-width', gridWidth + 'px');
        grid.exit().remove();

        // zero line
        if(zlcontainer) {
            var hasBarsOrFill = false;
            for(var i = 0; i < gd._fullData.length; i++) {
                if(traceHasBarsOrFill(gd._fullData[i], subplot)) {
                    hasBarsOrFill = true;
                    break;
                }
            }
            var rng = Lib.simpleMap(ax.range, ax.r2l),
                showZl = (rng[0] * rng[1] <= 0) && ax.zeroline &&
                (ax.type === 'linear' || ax.type === '-') && gridvals.length &&
                (hasBarsOrFill || clipEnds({x: 0}) || !ax.showline);
            var zl = zlcontainer.selectAll('path.' + zcls)
                .data(showZl ? [{x: 0}] : []);
            zl.enter().append('path').classed(zcls, 1).classed('zl', 1)
                .classed('crisp', 1)
                .attr('d', gridpath);
            zl.attr('transform', transfn)
                .call(Color.stroke, ax.zerolinecolor || Color.defaultLine)
                .style('stroke-width', zeroLineWidth + 'px');
            zl.exit().remove();
        }
    }

    if(independent) {
        drawTicks(ax._axislayer, tickpathfn(ax._pos + pad * ticksign[2], ticksign[2] * ax.ticklen));
        if(ax._counteraxis) {
            var fictionalPlotinfo = {
                gridlayer: ax._gridlayer,
                zerolinelayer: ax._zerolinelayer
            };
            drawGrid(fictionalPlotinfo, ax._counteraxis);
        }
        return drawLabels(ax._axislayer, ax._pos);
    }
    else {
        var alldone = axes.getSubplots(gd, ax).map(function(subplot) {
            var plotinfo = fullLayout._plots[subplot];

            if(!fullLayout._has('cartesian')) return;

            var container = plotinfo[axletter + 'axislayer'],

                // [bottom or left, top or right, free, main]
                linepositions = ax._linepositions[subplot] || [],
                counteraxis = plotinfo[counterLetter + 'axis'],
                mainSubplot = counteraxis._id === ax.anchor,
                ticksides = [false, false, false],
                tickpath = '';

            // ticks
            if(ax.mirror === 'allticks') ticksides = [true, true, false];
            else if(mainSubplot) {
                if(ax.mirror === 'ticks') ticksides = [true, true, false];
                else ticksides[sides.indexOf(axside)] = true;
            }
            if(ax.mirrors) {
                for(i = 0; i < 2; i++) {
                    var thisMirror = ax.mirrors[counteraxis._id + sides[i]];
                    if(thisMirror === 'ticks' || thisMirror === 'labels') {
                        ticksides[i] = true;
                    }
                }
            }

            // free axis ticks
            if(linepositions[2] !== undefined) ticksides[2] = true;

            ticksides.forEach(function(showside, sidei) {
                var pos = linepositions[sidei],
                    tsign = ticksign[sidei];
                if(showside && isNumeric(pos)) {
                    tickpath += tickpathfn(pos + pad * tsign, tsign * ax.ticklen);
                }
            });

            drawTicks(container, tickpath);
            drawGrid(plotinfo, counteraxis, subplot);
            return drawLabels(container, linepositions[3]);
        }).filter(function(onedone) { return onedone && onedone.then; });

        return alldone.length ? Promise.all(alldone) : 0;
    }
};

// swap all the presentation attributes of the axes showing these traces
axes.swap = function(gd, traces) {
    var axGroups = makeAxisGroups(gd, traces);

    for(var i = 0; i < axGroups.length; i++) {
        swapAxisGroup(gd, axGroups[i].x, axGroups[i].y);
    }
};

function makeAxisGroups(gd, traces) {
    var groups = [],
        i,
        j;

    for(i = 0; i < traces.length; i++) {
        var groupsi = [],
            xi = gd._fullData[traces[i]].xaxis,
            yi = gd._fullData[traces[i]].yaxis;
        if(!xi || !yi) continue; // not a 2D cartesian trace?

        for(j = 0; j < groups.length; j++) {
            if(groups[j].x.indexOf(xi) !== -1 || groups[j].y.indexOf(yi) !== -1) {
                groupsi.push(j);
            }
        }

        if(!groupsi.length) {
            groups.push({x: [xi], y: [yi]});
            continue;
        }

        var group0 = groups[groupsi[0]],
            groupj;

        if(groupsi.length > 1) {
            for(j = 1; j < groupsi.length; j++) {
                groupj = groups[groupsi[j]];
                mergeAxisGroups(group0.x, groupj.x);
                mergeAxisGroups(group0.y, groupj.y);
            }
        }
        mergeAxisGroups(group0.x, [xi]);
        mergeAxisGroups(group0.y, [yi]);
    }

    return groups;
}

function mergeAxisGroups(intoSet, fromSet) {
    for(var i = 0; i < fromSet.length; i++) {
        if(intoSet.indexOf(fromSet[i]) === -1) intoSet.push(fromSet[i]);
    }
}

function swapAxisGroup(gd, xIds, yIds) {
    var i,
        j,
        xFullAxes = [],
        yFullAxes = [],
        layout = gd.layout;

    for(i = 0; i < xIds.length; i++) xFullAxes.push(axes.getFromId(gd, xIds[i]));
    for(i = 0; i < yIds.length; i++) yFullAxes.push(axes.getFromId(gd, yIds[i]));

    var allAxKeys = Object.keys(xFullAxes[0]),
        noSwapAttrs = [
            'anchor', 'domain', 'overlaying', 'position', 'side', 'tickangle'
        ],
        numericTypes = ['linear', 'log'];

    for(i = 0; i < allAxKeys.length; i++) {
        var keyi = allAxKeys[i],
            xVal = xFullAxes[0][keyi],
            yVal = yFullAxes[0][keyi],
            allEqual = true,
            coerceLinearX = false,
            coerceLinearY = false;
        if(keyi.charAt(0) === '_' || typeof xVal === 'function' ||
                noSwapAttrs.indexOf(keyi) !== -1) {
            continue;
        }
        for(j = 1; j < xFullAxes.length && allEqual; j++) {
            var xVali = xFullAxes[j][keyi];
            if(keyi === 'type' && numericTypes.indexOf(xVal) !== -1 &&
                    numericTypes.indexOf(xVali) !== -1 && xVal !== xVali) {
                // type is special - if we find a mixture of linear and log,
                // coerce them all to linear on flipping
                coerceLinearX = true;
            }
            else if(xVali !== xVal) allEqual = false;
        }
        for(j = 1; j < yFullAxes.length && allEqual; j++) {
            var yVali = yFullAxes[j][keyi];
            if(keyi === 'type' && numericTypes.indexOf(yVal) !== -1 &&
                    numericTypes.indexOf(yVali) !== -1 && yVal !== yVali) {
                // type is special - if we find a mixture of linear and log,
                // coerce them all to linear on flipping
                coerceLinearY = true;
            }
            else if(yFullAxes[j][keyi] !== yVal) allEqual = false;
        }
        if(allEqual) {
            if(coerceLinearX) layout[xFullAxes[0]._name].type = 'linear';
            if(coerceLinearY) layout[yFullAxes[0]._name].type = 'linear';
            swapAxisAttrs(layout, keyi, xFullAxes, yFullAxes);
        }
    }

    // now swap x&y for any annotations anchored to these x & y
    for(i = 0; i < gd._fullLayout.annotations.length; i++) {
        var ann = gd._fullLayout.annotations[i];
        if(xIds.indexOf(ann.xref) !== -1 &&
                yIds.indexOf(ann.yref) !== -1) {
            Lib.swapAttrs(layout.annotations[i], ['?']);
        }
    }
}

function swapAxisAttrs(layout, key, xFullAxes, yFullAxes) {
    // in case the value is the default for either axis,
    // look at the first axis in each list and see if
    // this key's value is undefined
    var np = Lib.nestedProperty,
        xVal = np(layout[xFullAxes[0]._name], key).get(),
        yVal = np(layout[yFullAxes[0]._name], key).get(),
        i;
    if(key === 'title') {
        // special handling of placeholder titles
        if(xVal === 'Click to enter X axis title') {
            xVal = 'Click to enter Y axis title';
        }
        if(yVal === 'Click to enter Y axis title') {
            yVal = 'Click to enter X axis title';
        }
    }

    for(i = 0; i < xFullAxes.length; i++) {
        np(layout, xFullAxes[i]._name + '.' + key).set(yVal);
    }
    for(i = 0; i < yFullAxes.length; i++) {
        np(layout, yFullAxes[i]._name + '.' + key).set(xVal);
    }
}

},{"../../components/color":510,"../../components/drawing":533,"../../components/titles":584,"../../constants/numerical":593,"../../lib":610,"../../lib/svg_text_utils":625,"../../registry":717,"./axis_ids":645,"./layout_attributes":651,"./layout_defaults":652,"./set_convert":656,"d3":86,"fast-isnumeric":97}],643:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var BADNUM = require('../../constants/numerical').BADNUM;

module.exports = function autoType(array, calendar) {
    if(moreDates(array, calendar)) return 'date';
    if(category(array)) return 'category';
    if(linearOK(array)) return 'linear';
    else return '-';
};

// is there at least one number in array? If not, we should leave
// ax.type empty so it can be autoset later
function linearOK(array) {
    if(!array) return false;

    for(var i = 0; i < array.length; i++) {
        if(isNumeric(array[i])) return true;
    }

    return false;
}

// does the array a have mostly dates rather than numbers?
// note: some values can be neither (such as blanks, text)
// 2- or 4-digit integers can be both, so require twice as many
// dates as non-dates, to exclude cases with mostly 2 & 4 digit
// numbers and a few dates
function moreDates(a, calendar) {
    var dcnt = 0,
        ncnt = 0,
        // test at most 1000 points, evenly spaced
        inc = Math.max(1, (a.length - 1) / 1000),
        ai;

    for(var i = 0; i < a.length; i += inc) {
        ai = a[Math.round(i)];
        if(Lib.isDateTime(ai, calendar)) dcnt += 1;
        if(isNumeric(ai)) ncnt += 1;
    }

    return (dcnt > ncnt * 2);
}

// are the (x,y)-values in gd.data mostly text?
// require twice as many categories as numbers
function category(a) {
    // test at most 1000 points
    var inc = Math.max(1, (a.length - 1) / 1000),
        curvenums = 0,
        curvecats = 0,
        ai;

    for(var i = 0; i < a.length; i += inc) {
        ai = a[Math.round(i)];
        if(Lib.cleanNumber(ai) !== BADNUM) curvenums++;
        else if(typeof ai === 'string' && ai !== '' && ai !== 'None') curvecats++;
    }

    return curvecats > curvenums * 2;
}

},{"../../constants/numerical":593,"../../lib":610,"fast-isnumeric":97}],644:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var colorMix = require('tinycolor2').mix;

var Registry = require('../../registry');
var Lib = require('../../lib');
var lightFraction = require('../../components/color/attributes').lightFraction;

var layoutAttributes = require('./layout_attributes');
var handleTickValueDefaults = require('./tick_value_defaults');
var handleTickMarkDefaults = require('./tick_mark_defaults');
var handleTickLabelDefaults = require('./tick_label_defaults');
var handleCategoryOrderDefaults = require('./category_order_defaults');
var setConvert = require('./set_convert');
var orderedCategories = require('./ordered_categories');
var axisIds = require('./axis_ids');
var autoType = require('./axis_autotype');


/**
 * options: object containing:
 *
 *  letter: 'x' or 'y'
 *  title: name of the axis (ie 'Colorbar') to go in default title
 *  name: axis object name (ie 'xaxis') if one should be stored
 *  font: the default font to inherit
 *  outerTicks: boolean, should ticks default to outside?
 *  showGrid: boolean, should gridlines be shown by default?
 *  noHover: boolean, this axis doesn't support hover effects?
 *  data: the plot data to use in choosing auto type
 *  bgColor: the plot background color, to calculate default gridline colors
 */
module.exports = function handleAxisDefaults(containerIn, containerOut, coerce, options) {
    var letter = options.letter,
        font = options.font || {},
        defaultTitle = 'Click to enter ' +
            (options.title || (letter.toUpperCase() + ' axis')) +
            ' title';

    function coerce2(attr, dflt) {
        return Lib.coerce2(containerIn, containerOut, layoutAttributes, attr, dflt);
    }

    // set up some private properties
    if(options.name) {
        containerOut._name = options.name;
        containerOut._id = axisIds.name2id(options.name);
    }

    // now figure out type and do some more initialization
    var axType = coerce('type');
    if(axType === '-') {
        setAutoType(containerOut, options.data);

        if(containerOut.type === '-') {
            containerOut.type = 'linear';
        }
        else {
            // copy autoType back to input axis
            // note that if this object didn't exist
            // in the input layout, we have to put it in
            // this happens in the main supplyDefaults function
            axType = containerIn.type = containerOut.type;
        }
    }

    if(axType === 'date') {
        var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleDefaults');
        handleCalendarDefaults(containerIn, containerOut, 'calendar', options.calendar);
    }

    setConvert(containerOut);

    var dfltColor = coerce('color');
    // if axis.color was provided, use it for fonts too; otherwise,
    // inherit from global font color in case that was provided.
    var dfltFontColor = (dfltColor === containerIn.color) ? dfltColor : font.color;

    coerce('title', defaultTitle);
    Lib.coerceFont(coerce, 'titlefont', {
        family: font.family,
        size: Math.round(font.size * 1.2),
        color: dfltFontColor
    });

    var validRange = (
        (containerIn.range || []).length === 2 &&
        isNumeric(containerOut.r2l(containerIn.range[0])) &&
        isNumeric(containerOut.r2l(containerIn.range[1]))
    );
    var autoRange = coerce('autorange', !validRange);

    if(autoRange) coerce('rangemode');

    coerce('range');
    containerOut.cleanRange();

    coerce('fixedrange');

    handleTickValueDefaults(containerIn, containerOut, coerce, axType);
    handleTickLabelDefaults(containerIn, containerOut, coerce, axType, options);
    handleTickMarkDefaults(containerIn, containerOut, coerce, options);
    handleCategoryOrderDefaults(containerIn, containerOut, coerce);

    var lineColor = coerce2('linecolor', dfltColor),
        lineWidth = coerce2('linewidth'),
        showLine = coerce('showline', !!lineColor || !!lineWidth);

    if(!showLine) {
        delete containerOut.linecolor;
        delete containerOut.linewidth;
    }

    if(showLine || containerOut.ticks) coerce('mirror');

    var gridColor = coerce2('gridcolor', colorMix(dfltColor, options.bgColor, lightFraction).toRgbString()),
        gridWidth = coerce2('gridwidth'),
        showGridLines = coerce('showgrid', options.showGrid || !!gridColor || !!gridWidth);

    if(!showGridLines) {
        delete containerOut.gridcolor;
        delete containerOut.gridwidth;
    }

    var zeroLineColor = coerce2('zerolinecolor', dfltColor),
        zeroLineWidth = coerce2('zerolinewidth'),
        showZeroLine = coerce('zeroline', options.showGrid || !!zeroLineColor || !!zeroLineWidth);

    if(!showZeroLine) {
        delete containerOut.zerolinecolor;
        delete containerOut.zerolinewidth;
    }

    // fill in categories
    containerOut._initialCategories = axType === 'category' ?
        orderedCategories(letter, containerOut.categoryorder, containerOut.categoryarray, options.data) :
        [];

    return containerOut;
};

function setAutoType(ax, data) {
    // new logic: let people specify any type they want,
    // only autotype if type is '-'
    if(ax.type !== '-') return;

    var id = ax._id,
        axLetter = id.charAt(0);

    // support 3d
    if(id.indexOf('scene') !== -1) id = axLetter;

    var d0 = getFirstNonEmptyTrace(data, id, axLetter);
    if(!d0) return;

    // first check for histograms, as the count direction
    // should always default to a linear axis
    if(d0.type === 'histogram' &&
            axLetter === {v: 'y', h: 'x'}[d0.orientation || 'v']) {
        ax.type = 'linear';
        return;
    }

    var calAttr = axLetter + 'calendar',
        calendar = d0[calAttr];

    // check all boxes on this x axis to see
    // if they're dates, numbers, or categories
    if(isBoxWithoutPositionCoords(d0, axLetter)) {
        var posLetter = getBoxPosLetter(d0),
            boxPositions = [],
            trace;

        for(var i = 0; i < data.length; i++) {
            trace = data[i];
            if(!Registry.traceIs(trace, 'box') ||
               (trace[axLetter + 'axis'] || axLetter) !== id) continue;

            if(trace[posLetter] !== undefined) boxPositions.push(trace[posLetter][0]);
            else if(trace.name !== undefined) boxPositions.push(trace.name);
            else boxPositions.push('text');

            if(trace[calAttr] !== calendar) calendar = undefined;
        }

        ax.type = autoType(boxPositions, calendar);
    }
    else {
        ax.type = autoType(d0[axLetter] || [d0[axLetter + '0']], calendar);
    }
}

function getBoxPosLetter(trace) {
    return {v: 'x', h: 'y'}[trace.orientation || 'v'];
}

function isBoxWithoutPositionCoords(trace, axLetter) {
    var posLetter = getBoxPosLetter(trace);

    return (
        Registry.traceIs(trace, 'box') &&
        axLetter === posLetter &&
        trace[posLetter] === undefined &&
        trace[posLetter + '0'] === undefined
    );
}

function getFirstNonEmptyTrace(data, id, axLetter) {
    for(var i = 0; i < data.length; i++) {
        var trace = data[i];

        if((trace[axLetter + 'axis'] || axLetter) === id) {
            if(isBoxWithoutPositionCoords(trace, axLetter)) {
                return trace;
            }
            else if((trace[axLetter] || []).length || trace[axLetter + '0']) {
                return trace;
            }
        }
    }
}

},{"../../components/color/attributes":509,"../../lib":610,"../../registry":717,"./axis_autotype":643,"./axis_ids":645,"./category_order_defaults":646,"./layout_attributes":651,"./ordered_categories":653,"./set_convert":656,"./tick_label_defaults":657,"./tick_mark_defaults":658,"./tick_value_defaults":659,"fast-isnumeric":97,"tinycolor2":985}],645:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');
var Plots = require('../plots');
var Lib = require('../../lib');

var constants = require('./constants');


// convert between axis names (xaxis, xaxis2, etc, elements of gd.layout)
// and axis id's (x, x2, etc). Would probably have ditched 'xaxis'
// completely in favor of just 'x' if it weren't ingrained in the API etc.
exports.id2name = function id2name(id) {
    if(typeof id !== 'string' || !id.match(constants.AX_ID_PATTERN)) return;
    var axNum = id.substr(1);
    if(axNum === '1') axNum = '';
    return id.charAt(0) + 'axis' + axNum;
};

exports.name2id = function name2id(name) {
    if(!name.match(constants.AX_NAME_PATTERN)) return;
    var axNum = name.substr(5);
    if(axNum === '1') axNum = '';
    return name.charAt(0) + axNum;
};

exports.cleanId = function cleanId(id, axLetter) {
    if(!id.match(constants.AX_ID_PATTERN)) return;
    if(axLetter && id.charAt(0) !== axLetter) return;

    var axNum = id.substr(1).replace(/^0+/, '');
    if(axNum === '1') axNum = '';
    return id.charAt(0) + axNum;
};

// get all axis object names
// optionally restricted to only x or y or z by string axLetter
// and optionally 2D axes only, not those inside 3D scenes
function listNames(gd, axLetter, only2d) {
    var fullLayout = gd._fullLayout;
    if(!fullLayout) return [];

    function filterAxis(obj, extra) {
        var keys = Object.keys(obj),
            axMatch = /^[xyz]axis[0-9]*/,
            out = [];

        for(var i = 0; i < keys.length; i++) {
            var k = keys[i];
            if(axLetter && k.charAt(0) !== axLetter) continue;
            if(axMatch.test(k)) out.push(extra + k);
        }

        return out.sort();
    }

    var names = filterAxis(fullLayout, '');
    if(only2d) return names;

    var sceneIds3D = Plots.getSubplotIds(fullLayout, 'gl3d') || [];
    for(var i = 0; i < sceneIds3D.length; i++) {
        var sceneId = sceneIds3D[i];
        names = names.concat(
            filterAxis(fullLayout[sceneId], sceneId + '.')
        );
    }

    return names;
}

// get all axis objects, as restricted in listNames
exports.list = function(gd, axletter, only2d) {
    return listNames(gd, axletter, only2d)
        .map(function(axName) {
            return Lib.nestedProperty(gd._fullLayout, axName).get();
        });
};

// get all axis ids, optionally restricted by letter
// this only makes sense for 2d axes
exports.listIds = function(gd, axletter) {
    return listNames(gd, axletter, true).map(exports.name2id);
};

// get an axis object from its id 'x','x2' etc
// optionally, id can be a subplot (ie 'x2y3') and type gets x or y from it
exports.getFromId = function(gd, id, type) {
    var fullLayout = gd._fullLayout;

    if(type === 'x') id = id.replace(/y[0-9]*/, '');
    else if(type === 'y') id = id.replace(/x[0-9]*/, '');

    return fullLayout[exports.id2name(id)];
};

// get an axis object of specified type from the containing trace
exports.getFromTrace = function(gd, fullTrace, type) {
    var fullLayout = gd._fullLayout;
    var ax = null;

    if(Registry.traceIs(fullTrace, 'gl3d')) {
        var scene = fullTrace.scene;
        if(scene.substr(0, 5) === 'scene') {
            ax = fullLayout[scene][type + 'axis'];
        }
    }
    else {
        ax = exports.getFromId(gd, fullTrace[type + 'axis'] || type);
    }

    return ax;
};

},{"../../lib":610,"../../registry":717,"../plots":702,"./constants":647}],646:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = function handleCategoryOrderDefaults(containerIn, containerOut, coerce) {
    if(containerOut.type !== 'category') return;

    var arrayIn = containerIn.categoryarray,
        orderDefault;

    var isValidArray = (Array.isArray(arrayIn) && arrayIn.length > 0);

    // override default 'categoryorder' value when non-empty array is supplied
    if(isValidArray) orderDefault = 'array';

    var order = coerce('categoryorder', orderDefault);

    // coerce 'categoryarray' only in array order case
    if(order === 'array') coerce('categoryarray');

    // cannot set 'categoryorder' to 'array' with an invalid 'categoryarray'
    if(!isValidArray && order === 'array') {
        containerOut.categoryorder = 'trace';
    }
};

},{}],647:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {

    idRegex: {
        x: /^x([2-9]|[1-9][0-9]+)?$/,
        y: /^y([2-9]|[1-9][0-9]+)?$/
    },

    attrRegex: {
        x: /^xaxis([2-9]|[1-9][0-9]+)?$/,
        y: /^yaxis([2-9]|[1-9][0-9]+)?$/
    },

    // axis match regular expression
    xAxisMatch: /^xaxis[0-9]*$/,
    yAxisMatch: /^yaxis[0-9]*$/,

    // pattern matching axis ids and names
    AX_ID_PATTERN: /^[xyz][0-9]*$/,
    AX_NAME_PATTERN: /^[xyz]axis[0-9]*$/,

    // ms between first mousedown and 2nd mouseup to constitute dblclick...
    // we don't seem to have access to the system setting
    DBLCLICKDELAY: 300,

    // pixels to move mouse before you stop clamping to starting point
    MINDRAG: 8,

    // smallest dimension allowed for a select box
    MINSELECT: 12,

    // smallest dimension allowed for a zoombox
    MINZOOM: 20,

    // width of axis drag regions
    DRAGGERSIZE: 20,

    // max pixels away from mouse to allow a point to highlight
    MAXDIST: 20,

    // hover labels for multiple horizontal bars get tilted by this angle
    YANGLE: 60,

    // size and display constants for hover text
    HOVERARROWSIZE: 6, // pixel size of hover arrows
    HOVERTEXTPAD: 3, // pixels padding around text
    HOVERFONTSIZE: 13,
    HOVERFONT: 'Arial, sans-serif',

    // minimum time (msec) between hover calls
    HOVERMINTIME: 50,

    // max pixels off straight before a lasso select line counts as bent
    BENDPX: 1.5,

    // delay before a redraw (relayout) after smooth panning and zooming
    REDRAWDELAY: 50,

    // last resort axis ranges for x and y axes if we have no data
    DFLTRANGEX: [-1, 6],
    DFLTRANGEY: [-1, 4]
};

},{}],648:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');

var Plotly = require('../../plotly');
var Registry = require('../../registry');
var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var setCursor = require('../../lib/setcursor');
var dragElement = require('../../components/dragelement');

var Axes = require('./axes');
var prepSelect = require('./select');
var constants = require('./constants');


// flag for showing "doubleclick to zoom out" only at the beginning
var SHOWZOOMOUTTIP = true;

// dragBox: create an element to drag one or more axis ends
// inputs:
//      plotinfo - which subplot are we making dragboxes on?
//      x,y,w,h - left, top, width, height of the box
//      ns - how does this drag the vertical axis?
//          'n' - top only
//          's' - bottom only
//          'ns' - top and bottom together, difference unchanged
//      ew - same for horizontal axis
module.exports = function dragBox(gd, plotinfo, x, y, w, h, ns, ew) {
    // mouseDown stores ms of first mousedown event in the last
    // DBLCLICKDELAY ms on the drag bars
    // numClicks stores how many mousedowns have been seen
    // within DBLCLICKDELAY so we can check for click or doubleclick events
    // dragged stores whether a drag has occurred, so we don't have to
    // redraw unnecessarily, ie if no move bigger than MINDRAG or MINZOOM px
    var fullLayout = gd._fullLayout,
        // if we're dragging two axes at once, also drag overlays
        subplots = [plotinfo].concat((ns && ew) ? plotinfo.overlays : []),
        xa = [plotinfo.xaxis],
        ya = [plotinfo.yaxis],
        pw = xa[0]._length,
        ph = ya[0]._length,
        MINDRAG = constants.MINDRAG,
        MINZOOM = constants.MINZOOM,
        isMainDrag = (ns + ew === 'nsew');

    for(var i = 1; i < subplots.length; i++) {
        var subplotXa = subplots[i].xaxis,
            subplotYa = subplots[i].yaxis;
        if(xa.indexOf(subplotXa) === -1) xa.push(subplotXa);
        if(ya.indexOf(subplotYa) === -1) ya.push(subplotYa);
    }

    function isDirectionActive(axList, activeVal) {
        for(var i = 0; i < axList.length; i++) {
            if(!axList[i].fixedrange) return activeVal;
        }
        return '';
    }

    var allaxes = xa.concat(ya),
        xActive = isDirectionActive(xa, ew),
        yActive = isDirectionActive(ya, ns),
        cursor = getDragCursor(yActive + xActive, fullLayout.dragmode),
        dragClass = ns + ew + 'drag';

    var dragger3 = plotinfo.draglayer.selectAll('.' + dragClass).data([0]);

    dragger3.enter().append('rect')
        .classed('drag', true)
        .classed(dragClass, true)
        .style({fill: 'transparent', 'stroke-width': 0})
        .attr('data-subplot', plotinfo.id);

    dragger3.call(Drawing.setRect, x, y, w, h)
        .call(setCursor, cursor);

    var dragger = dragger3.node();

    // still need to make the element if the axes are disabled
    // but nuke its events (except for maindrag which needs them for hover)
    // and stop there
    if(!yActive && !xActive && !isSelectOrLasso(fullLayout.dragmode)) {
        dragger.onmousedown = null;
        dragger.style.pointerEvents = isMainDrag ? 'all' : 'none';
        return dragger;
    }

    var dragOptions = {
        element: dragger,
        gd: gd,
        plotinfo: plotinfo,
        xaxes: xa,
        yaxes: ya,
        doubleclick: doubleClick,
        prepFn: function(e, startX, startY) {
            var dragModeNow = gd._fullLayout.dragmode;

            if(isMainDrag) {
                // main dragger handles all drag modes, and changes
                // to pan (or to zoom if it already is pan) on shift
                if(e.shiftKey) {
                    if(dragModeNow === 'pan') dragModeNow = 'zoom';
                    else dragModeNow = 'pan';
                }
            }
            // all other draggers just pan
            else dragModeNow = 'pan';

            if(dragModeNow === 'lasso') dragOptions.minDrag = 1;
            else dragOptions.minDrag = undefined;

            if(dragModeNow === 'zoom') {
                dragOptions.moveFn = zoomMove;
                dragOptions.doneFn = zoomDone;
                zoomPrep(e, startX, startY);
            }
            else if(dragModeNow === 'pan') {
                dragOptions.moveFn = plotDrag;
                dragOptions.doneFn = dragDone;
                clearSelect();
            }
            else if(isSelectOrLasso(dragModeNow)) {
                prepSelect(e, startX, startY, dragOptions, dragModeNow);
            }
        }
    };

    dragElement.init(dragOptions);

    var zoomlayer = gd._fullLayout._zoomlayer,
        xs = plotinfo.xaxis._offset,
        ys = plotinfo.yaxis._offset,
        x0,
        y0,
        box,
        lum,
        path0,
        dimmed,
        zoomMode,
        zb,
        corners;

    function recomputeAxisLists() {
        xa = [plotinfo.xaxis];
        ya = [plotinfo.yaxis];
        pw = xa[0]._length;
        ph = ya[0]._length;

        for(var i = 1; i < subplots.length; i++) {
            var subplotXa = subplots[i].xaxis,
                subplotYa = subplots[i].yaxis;
            if(xa.indexOf(subplotXa) === -1) xa.push(subplotXa);
            if(ya.indexOf(subplotYa) === -1) ya.push(subplotYa);
        }
        allaxes = xa.concat(ya);
        xActive = isDirectionActive(xa, ew);
        yActive = isDirectionActive(ya, ns);
        cursor = getDragCursor(yActive + xActive, fullLayout.dragmode);
        xs = plotinfo.xaxis._offset;
        ys = plotinfo.yaxis._offset;
        dragOptions.xa = xa;
        dragOptions.ya = ya;
    }

    function zoomPrep(e, startX, startY) {
        var dragBBox = dragger.getBoundingClientRect();
        x0 = startX - dragBBox.left;
        y0 = startY - dragBBox.top;
        box = {l: x0, r: x0, w: 0, t: y0, b: y0, h: 0};
        lum = gd._hmpixcount ?
            (gd._hmlumcount / gd._hmpixcount) :
            tinycolor(gd._fullLayout.plot_bgcolor).getLuminance();
        path0 = 'M0,0H' + pw + 'V' + ph + 'H0V0';
        dimmed = false;
        zoomMode = 'xy';

        zb = zoomlayer.append('path')
            .attr('class', 'zoombox')
            .style({
                'fill': lum > 0.2 ? 'rgba(0,0,0,0)' : 'rgba(255,255,255,0)',
                'stroke-width': 0
            })
            .attr('transform', 'translate(' + xs + ', ' + ys + ')')
            .attr('d', path0 + 'Z');

        corners = zoomlayer.append('path')
            .attr('class', 'zoombox-corners')
            .style({
                fill: Color.background,
                stroke: Color.defaultLine,
                'stroke-width': 1,
                opacity: 0
            })
            .attr('transform', 'translate(' + xs + ', ' + ys + ')')
            .attr('d', 'M0,0Z');

        clearSelect();
    }

    function clearSelect() {
        // until we get around to persistent selections, remove the outline
        // here. The selection itself will be removed when the plot redraws
        // at the end.
        zoomlayer.selectAll('.select-outline').remove();
    }

    function zoomMove(dx0, dy0) {
        if(gd._transitioningWithDuration) {
            return false;
        }

        var x1 = Math.max(0, Math.min(pw, dx0 + x0)),
            y1 = Math.max(0, Math.min(ph, dy0 + y0)),
            dx = Math.abs(x1 - x0),
            dy = Math.abs(y1 - y0),
            clen = Math.floor(Math.min(dy, dx, MINZOOM) / 2);

        box.l = Math.min(x0, x1);
        box.r = Math.max(x0, x1);
        box.t = Math.min(y0, y1);
        box.b = Math.max(y0, y1);

        // look for small drags in one direction or the other,
        // and only drag the other axis
        if(!yActive || dy < Math.min(Math.max(dx * 0.6, MINDRAG), MINZOOM)) {
            if(dx < MINDRAG) {
                zoomMode = '';
                box.r = box.l;
                box.t = box.b;
                corners.attr('d', 'M0,0Z');
            }
            else {
                box.t = 0;
                box.b = ph;
                zoomMode = 'x';
                corners.attr('d',
                    'M' + (box.l - 0.5) + ',' + (y0 - MINZOOM - 0.5) +
                    'h-3v' + (2 * MINZOOM + 1) + 'h3ZM' +
                    (box.r + 0.5) + ',' + (y0 - MINZOOM - 0.5) +
                    'h3v' + (2 * MINZOOM + 1) + 'h-3Z');
            }
        }
        else if(!xActive || dx < Math.min(dy * 0.6, MINZOOM)) {
            box.l = 0;
            box.r = pw;
            zoomMode = 'y';
            corners.attr('d',
                'M' + (x0 - MINZOOM - 0.5) + ',' + (box.t - 0.5) +
                'v-3h' + (2 * MINZOOM + 1) + 'v3ZM' +
                (x0 - MINZOOM - 0.5) + ',' + (box.b + 0.5) +
                'v3h' + (2 * MINZOOM + 1) + 'v-3Z');
        }
        else {
            zoomMode = 'xy';
            corners.attr('d',
                'M' + (box.l - 3.5) + ',' + (box.t - 0.5 + clen) + 'h3v' + (-clen) +
                        'h' + clen + 'v-3h-' + (clen + 3) + 'ZM' +
                    (box.r + 3.5) + ',' + (box.t - 0.5 + clen) + 'h-3v' + (-clen) +
                        'h' + (-clen) + 'v-3h' + (clen + 3) + 'ZM' +
                    (box.r + 3.5) + ',' + (box.b + 0.5 - clen) + 'h-3v' + clen +
                        'h' + (-clen) + 'v3h' + (clen + 3) + 'ZM' +
                    (box.l - 3.5) + ',' + (box.b + 0.5 - clen) + 'h3v' + clen +
                        'h' + clen + 'v3h-' + (clen + 3) + 'Z');
        }
        box.w = box.r - box.l;
        box.h = box.b - box.t;

        // Not sure about the addition of window.scrollX/Y...
        // seems to work but doesn't seem robust.
        zb.attr('d',
            path0 + 'M' + (box.l) + ',' + (box.t) + 'v' + (box.h) +
            'h' + (box.w) + 'v-' + (box.h) + 'h-' + (box.w) + 'Z');
        if(!dimmed) {
            zb.transition()
                .style('fill', lum > 0.2 ? 'rgba(0,0,0,0.4)' :
                    'rgba(255,255,255,0.3)')
                .duration(200);
            corners.transition()
                .style('opacity', 1)
                .duration(200);
            dimmed = true;
        }
    }

    function zoomAxRanges(axList, r0Fraction, r1Fraction) {
        var i,
            axi,
            axRangeLinear0,
            axRangeLinearSpan;

        for(i = 0; i < axList.length; i++) {
            axi = axList[i];
            if(axi.fixedrange) continue;

            axRangeLinear0 = axi._rl[0];
            axRangeLinearSpan = axi._rl[1] - axRangeLinear0;
            axi.range = [
                axi.l2r(axRangeLinear0 + axRangeLinearSpan * r0Fraction),
                axi.l2r(axRangeLinear0 + axRangeLinearSpan * r1Fraction)
            ];
        }
    }

    function zoomDone(dragged, numClicks) {
        if(Math.min(box.h, box.w) < MINDRAG * 2) {
            if(numClicks === 2) doubleClick();

            return removeZoombox(gd);
        }

        if(zoomMode === 'xy' || zoomMode === 'x') zoomAxRanges(xa, box.l / pw, box.r / pw);
        if(zoomMode === 'xy' || zoomMode === 'y') zoomAxRanges(ya, (ph - box.b) / ph, (ph - box.t) / ph);

        removeZoombox(gd);
        dragTail(zoomMode);

        if(SHOWZOOMOUTTIP && gd.data && gd._context.showTips) {
            Lib.notifier('Double-click to<br>zoom back out', 'long');
            SHOWZOOMOUTTIP = false;
        }
    }

    function dragDone(dragged, numClicks) {
        var singleEnd = (ns + ew).length === 1;
        if(dragged) dragTail();
        else if(numClicks === 2 && !singleEnd) doubleClick();
        else if(numClicks === 1 && singleEnd) {
            var ax = ns ? ya[0] : xa[0],
                end = (ns === 's' || ew === 'w') ? 0 : 1,
                attrStr = ax._name + '.range[' + end + ']',
                initialText = getEndText(ax, end),
                hAlign = 'left',
                vAlign = 'middle';

            if(ax.fixedrange) return;

            if(ns) {
                vAlign = (ns === 'n') ? 'top' : 'bottom';
                if(ax.side === 'right') hAlign = 'right';
            }
            else if(ew === 'e') hAlign = 'right';

            dragger3
                .call(svgTextUtils.makeEditable, null, {
                    immediate: true,
                    background: fullLayout.paper_bgcolor,
                    text: String(initialText),
                    fill: ax.tickfont ? ax.tickfont.color : '#444',
                    horizontalAlign: hAlign,
                    verticalAlign: vAlign
                })
                .on('edit', function(text) {
                    var v = ax.d2r(text);
                    if(v !== undefined) {
                        Plotly.relayout(gd, attrStr, v);
                    }
                });
        }
    }

    // scroll zoom, on all draggers except corners
    var scrollViewBox = [0, 0, pw, ph],
        // wait a little after scrolling before redrawing
        redrawTimer = null,
        REDRAWDELAY = constants.REDRAWDELAY,
        mainplot = plotinfo.mainplot ?
            fullLayout._plots[plotinfo.mainplot] : plotinfo;

    function zoomWheel(e) {
        // deactivate mousewheel scrolling on embedded graphs
        // devs can override this with layout._enablescrollzoom,
        // but _ ensures this setting won't leave their page
        if(!gd._context.scrollZoom && !fullLayout._enablescrollzoom) {
            return;
        }

        // If a transition is in progress, then disable any behavior:
        if(gd._transitioningWithDuration) {
            return Lib.pauseEvent(e);
        }

        var pc = gd.querySelector('.plotly');

        recomputeAxisLists();

        // if the plot has scrollbars (more than a tiny excess)
        // disable scrollzoom too.
        if(pc.scrollHeight - pc.clientHeight > 10 ||
                pc.scrollWidth - pc.clientWidth > 10) {
            return;
        }

        clearTimeout(redrawTimer);

        var wheelDelta = -e.deltaY;
        if(!isFinite(wheelDelta)) wheelDelta = e.wheelDelta / 10;
        if(!isFinite(wheelDelta)) {
            Lib.log('Did not find wheel motion attributes: ', e);
            return;
        }

        var zoom = Math.exp(-Math.min(Math.max(wheelDelta, -20), 20) / 100),
            gbb = mainplot.draglayer.select('.nsewdrag')
                .node().getBoundingClientRect(),
            xfrac = (e.clientX - gbb.left) / gbb.width,
            vbx0 = scrollViewBox[0] + scrollViewBox[2] * xfrac,
            yfrac = (gbb.bottom - e.clientY) / gbb.height,
            vby0 = scrollViewBox[1] + scrollViewBox[3] * (1 - yfrac),
            i;

        function zoomWheelOneAxis(ax, centerFraction, zoom) {
            if(ax.fixedrange) return;

            var axRange = Lib.simpleMap(ax.range, ax.r2l),
                v0 = axRange[0] + (axRange[1] - axRange[0]) * centerFraction;
            function doZoom(v) { return ax.l2r(v0 + (v - v0) * zoom); }
            ax.range = axRange.map(doZoom);
        }

        if(ew) {
            for(i = 0; i < xa.length; i++) zoomWheelOneAxis(xa[i], xfrac, zoom);
            scrollViewBox[2] *= zoom;
            scrollViewBox[0] = vbx0 - scrollViewBox[2] * xfrac;
        }
        if(ns) {
            for(i = 0; i < ya.length; i++) zoomWheelOneAxis(ya[i], yfrac, zoom);
            scrollViewBox[3] *= zoom;
            scrollViewBox[1] = vby0 - scrollViewBox[3] * (1 - yfrac);
        }

        // viewbox redraw at first
        updateSubplots(scrollViewBox);
        ticksAndAnnotations(ns, ew);

        // then replot after a delay to make sure
        // no more scrolling is coming
        redrawTimer = setTimeout(function() {
            scrollViewBox = [0, 0, pw, ph];
            dragTail();
        }, REDRAWDELAY);

        return Lib.pauseEvent(e);
    }

    // everything but the corners gets wheel zoom
    if(ns.length * ew.length !== 1) {
        // still seems to be some confusion about onwheel vs onmousewheel...
        if(dragger.onwheel !== undefined) dragger.onwheel = zoomWheel;
        else if(dragger.onmousewheel !== undefined) dragger.onmousewheel = zoomWheel;
    }

    // plotDrag: move the plot in response to a drag
    function plotDrag(dx, dy) {
        // If a transition is in progress, then disable any behavior:
        if(gd._transitioningWithDuration) {
            return;
        }

        recomputeAxisLists();

        function dragAxList(axList, pix) {
            for(var i = 0; i < axList.length; i++) {
                var axi = axList[i];
                if(!axi.fixedrange) {
                    axi.range = [
                        axi.l2r(axi._rl[0] - pix / axi._m),
                        axi.l2r(axi._rl[1] - pix / axi._m)
                    ];
                }
            }
        }

        if(xActive === 'ew' || yActive === 'ns') {
            if(xActive) dragAxList(xa, dx);
            if(yActive) dragAxList(ya, dy);
            updateSubplots([xActive ? -dx : 0, yActive ? -dy : 0, pw, ph]);
            ticksAndAnnotations(yActive, xActive);
            return;
        }

        // common transform for dragging one end of an axis
        // d>0 is compressing scale (cursor is over the plot,
        //  the axis end should move with the cursor)
        // d<0 is expanding (cursor is off the plot, axis end moves
        //  nonlinearly so you can expand far)
        function dZoom(d) {
            return 1 - ((d >= 0) ? Math.min(d, 0.9) :
                1 / (1 / Math.max(d, -0.3) + 3.222));
        }

        // dz: set a new value for one end (0 or 1) of an axis array axArray,
        // and return a pixel shift for that end for the viewbox
        // based on pixel drag distance d
        // TODO: this makes (generally non-fatal) errors when you get
        // near floating point limits
        function dz(axArray, end, d) {
            var otherEnd = 1 - end,
                movedAx,
                newLinearizedEnd;
            for(var i = 0; i < axArray.length; i++) {
                var axi = axArray[i];
                if(axi.fixedrange) continue;
                movedAx = axi;
                newLinearizedEnd = axi._rl[otherEnd] +
                    (axi._rl[end] - axi._rl[otherEnd]) / dZoom(d / axi._length);
                var newEnd = axi.l2r(newLinearizedEnd);

                // if l2r comes back false or undefined, it means we've dragged off
                // the end of valid ranges - so stop.
                if(newEnd !== false && newEnd !== undefined) axi.range[end] = newEnd;
            }
            return movedAx._length * (movedAx._rl[end] - newLinearizedEnd) /
                (movedAx._rl[end] - movedAx._rl[otherEnd]);
        }

        if(xActive === 'w') dx = dz(xa, 0, dx);
        else if(xActive === 'e') dx = dz(xa, 1, -dx);
        else if(!xActive) dx = 0;

        if(yActive === 'n') dy = dz(ya, 1, dy);
        else if(yActive === 's') dy = dz(ya, 0, -dy);
        else if(!yActive) dy = 0;

        updateSubplots([
            (xActive === 'w') ? dx : 0,
            (yActive === 'n') ? dy : 0,
            pw - dx,
            ph - dy
        ]);
        ticksAndAnnotations(yActive, xActive);
    }

    function ticksAndAnnotations(ns, ew) {
        var activeAxIds = [],
            i;

        function pushActiveAxIds(axList) {
            for(i = 0; i < axList.length; i++) {
                if(!axList[i].fixedrange) activeAxIds.push(axList[i]._id);
            }
        }

        if(ew) pushActiveAxIds(xa);
        if(ns) pushActiveAxIds(ya);

        for(i = 0; i < activeAxIds.length; i++) {
            Axes.doTicks(gd, activeAxIds[i], true);
        }

        function redrawObjs(objArray, method) {
            for(i = 0; i < objArray.length; i++) {
                var obji = objArray[i];

                if((ew && activeAxIds.indexOf(obji.xref) !== -1) ||
                    (ns && activeAxIds.indexOf(obji.yref) !== -1)) {
                    method(gd, i);
                }
            }
        }

        // annotations and shapes 'draw' method is slow,
        // use the finer-grained 'drawOne' method instead

        redrawObjs(fullLayout.annotations || [], Registry.getComponentMethod('annotations', 'drawOne'));
        redrawObjs(fullLayout.shapes || [], Registry.getComponentMethod('shapes', 'drawOne'));
        redrawObjs(fullLayout.images || [], Registry.getComponentMethod('images', 'draw'));
    }

    function doubleClick() {
        if(gd._transitioningWithDuration) return;

        var doubleClickConfig = gd._context.doubleClick,
            axList = (xActive ? xa : []).concat(yActive ? ya : []),
            attrs = {};

        var ax, i, rangeInitial;

        if(doubleClickConfig === 'autosize') {
            for(i = 0; i < axList.length; i++) {
                ax = axList[i];
                if(!ax.fixedrange) attrs[ax._name + '.autorange'] = true;
            }
        }
        else if(doubleClickConfig === 'reset') {
            for(i = 0; i < axList.length; i++) {
                ax = axList[i];

                if(!ax._rangeInitial) {
                    attrs[ax._name + '.autorange'] = true;
                }
                else {
                    rangeInitial = ax._rangeInitial.slice();
                    attrs[ax._name + '.range[0]'] = rangeInitial[0];
                    attrs[ax._name + '.range[1]'] = rangeInitial[1];
                }
            }
        }
        else if(doubleClickConfig === 'reset+autosize') {
            for(i = 0; i < axList.length; i++) {
                ax = axList[i];

                if(ax.fixedrange) continue;
                if(ax._rangeInitial === undefined ||
                    ax.range[0] === ax._rangeInitial[0] &&
                    ax.range[1] === ax._rangeInitial[1]
                ) {
                    attrs[ax._name + '.autorange'] = true;
                }
                else {
                    rangeInitial = ax._rangeInitial.slice();
                    attrs[ax._name + '.range[0]'] = rangeInitial[0];
                    attrs[ax._name + '.range[1]'] = rangeInitial[1];
                }
            }
        }

        gd.emit('plotly_doubleclick', null);
        Plotly.relayout(gd, attrs);
    }

    // dragTail - finish a drag event with a redraw
    function dragTail(zoommode) {
        var attrs = {};
        // revert to the previous axis settings, then apply the new ones
        // through relayout - this lets relayout manage undo/redo
        for(var i = 0; i < allaxes.length; i++) {
            var axi = allaxes[i];
            if(zoommode && zoommode.indexOf(axi._id.charAt(0)) === -1) {
                continue;
            }
            if(axi._r[0] !== axi.range[0]) attrs[axi._name + '.range[0]'] = axi.range[0];
            if(axi._r[1] !== axi.range[1]) attrs[axi._name + '.range[1]'] = axi.range[1];

            axi.range = axi._r.slice();
        }

        updateSubplots([0, 0, pw, ph]);
        Plotly.relayout(gd, attrs);
    }

    // updateSubplots - find all plot viewboxes that should be
    // affected by this drag, and update them. look for all plots
    // sharing an affected axis (including the one being dragged)
    function updateSubplots(viewBox) {
        var j;
        var plotinfos = fullLayout._plots,
            subplots = Object.keys(plotinfos);

        for(var i = 0; i < subplots.length; i++) {

            var subplot = plotinfos[subplots[i]],
                xa2 = subplot.xaxis,
                ya2 = subplot.yaxis,
                editX = ew && !xa2.fixedrange,
                editY = ns && !ya2.fixedrange;

            if(editX) {
                var isInX = false;
                for(j = 0; j < xa.length; j++) {
                    if(xa[j]._id === xa2._id) {
                        isInX = true;
                        break;
                    }
                }
                editX = editX && isInX;
            }

            if(editY) {
                var isInY = false;
                for(j = 0; j < ya.length; j++) {
                    if(ya[j]._id === ya2._id) {
                        isInY = true;
                        break;
                    }
                }
                editY = editY && isInY;
            }

            var xScaleFactor = editX ? xa2._length / viewBox[2] : 1,
                yScaleFactor = editY ? ya2._length / viewBox[3] : 1;

            var clipDx = editX ? viewBox[0] : 0,
                clipDy = editY ? viewBox[1] : 0;

            var fracDx = editX ? (viewBox[0] / viewBox[2] * xa2._length) : 0,
                fracDy = editY ? (viewBox[1] / viewBox[3] * ya2._length) : 0;

            var plotDx = xa2._offset - fracDx,
                plotDy = ya2._offset - fracDy;

            fullLayout._defs.selectAll('#' + subplot.clipId)
                .call(Lib.setTranslate, clipDx, clipDy)
                .call(Lib.setScale, 1 / xScaleFactor, 1 / yScaleFactor);

            subplot.plot
                .call(Lib.setTranslate, plotDx, plotDy)
                .call(Lib.setScale, xScaleFactor, yScaleFactor)

                // This is specifically directed at scatter traces, applying an inverse
                // scale to individual points to counteract the scale of the trace
                // as a whole:
                .selectAll('.points').selectAll('.point')
                    .call(Lib.setPointGroupScale, 1 / xScaleFactor, 1 / yScaleFactor);
        }
    }

    return dragger;
};

function getEndText(ax, end) {
    var initialVal = ax.range[end],
        diff = Math.abs(initialVal - ax.range[1 - end]),
        dig;

    // TODO: this should basically be ax.r2d but we're doing extra
    // rounding here... can we clean up at all?
    if(ax.type === 'date') {
        return initialVal;
    }
    else if(ax.type === 'log') {
        dig = Math.ceil(Math.max(0, -Math.log(diff) / Math.LN10)) + 3;
        return d3.format('.' + dig + 'g')(Math.pow(10, initialVal));
    }
    else { // linear numeric (or category... but just show numbers here)
        dig = Math.floor(Math.log(Math.abs(initialVal)) / Math.LN10) -
            Math.floor(Math.log(diff) / Math.LN10) + 4;
        return d3.format('.' + String(dig) + 'g')(initialVal);
    }
}

function getDragCursor(nsew, dragmode) {
    if(!nsew) return 'pointer';
    if(nsew === 'nsew') {
        if(dragmode === 'pan') return 'move';
        return 'crosshair';
    }
    return nsew.toLowerCase() + '-resize';
}

function removeZoombox(gd) {
    d3.select(gd)
        .selectAll('.zoombox,.js-zoombox-backdrop,.js-zoombox-menu,.zoombox-corners')
        .remove();
}

function isSelectOrLasso(dragmode) {
    var modes = ['lasso', 'select'];

    return modes.indexOf(dragmode) !== -1;
}

},{"../../components/color":510,"../../components/dragelement":531,"../../components/drawing":533,"../../lib":610,"../../lib/setcursor":621,"../../lib/svg_text_utils":625,"../../plotly":637,"../../registry":717,"./axes":642,"./constants":647,"./select":655,"d3":86,"tinycolor2":985}],649:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');
var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Events = require('../../lib/events');
var svgTextUtils = require('../../lib/svg_text_utils');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var dragElement = require('../../components/dragelement');

var Axes = require('./axes');
var constants = require('./constants');
var dragBox = require('./dragbox');
var layoutAttributes = require('../layout_attributes');


var fx = module.exports = {};

// TODO remove this in version 2.0
// copy on Fx for backward compatible
fx.unhover = dragElement.unhover;

fx.layoutAttributes = {
};

fx.supplyLayoutDefaults = function(layoutIn, layoutOut, fullData) {

    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }

    coerce('dragmode');

    var hovermodeDflt;
    if(layoutOut._has('cartesian')) {
        // flag for 'horizontal' plots:
        // determines the state of the mode bar 'compare' hovermode button
        var isHoriz = layoutOut._isHoriz = fx.isHoriz(fullData);
        hovermodeDflt = isHoriz ? 'y' : 'x';
    }
    else hovermodeDflt = 'closest';

    coerce('hovermode', hovermodeDflt);
};

fx.isHoriz = function(fullData) {
    var isHoriz = true;

    for(var i = 0; i < fullData.length; i++) {
        var trace = fullData[i];

        if(trace.orientation !== 'h') {
            isHoriz = false;
            break;
        }
    }

    return isHoriz;
};

fx.init = function(gd) {
    var fullLayout = gd._fullLayout;

    if(!fullLayout._has('cartesian') || gd._context.staticPlot) return;

    var subplots = Object.keys(fullLayout._plots || {}).sort(function(a, b) {
        // sort overlays last, then by x axis number, then y axis number
        if((fullLayout._plots[a].mainplot && true) ===
            (fullLayout._plots[b].mainplot && true)) {
            var aParts = a.split('y'),
                bParts = b.split('y');
            return (aParts[0] === bParts[0]) ?
                (Number(aParts[1] || 1) - Number(bParts[1] || 1)) :
                (Number(aParts[0] || 1) - Number(bParts[0] || 1));
        }
        return fullLayout._plots[a].mainplot ? 1 : -1;
    });

    subplots.forEach(function(subplot) {
        var plotinfo = fullLayout._plots[subplot];

        if(!fullLayout._has('cartesian')) return;

        var xa = plotinfo.xaxis,
            ya = plotinfo.yaxis,

            // the y position of the main x axis line
            y0 = (xa._linepositions[subplot] || [])[3],

            // the x position of the main y axis line
            x0 = (ya._linepositions[subplot] || [])[3];

        var DRAGGERSIZE = constants.DRAGGERSIZE;
        if(isNumeric(y0) && xa.side === 'top') y0 -= DRAGGERSIZE;
        if(isNumeric(x0) && ya.side !== 'right') x0 -= DRAGGERSIZE;

        // main and corner draggers need not be repeated for
        // overlaid subplots - these draggers drag them all
        if(!plotinfo.mainplot) {
            // main dragger goes over the grids and data, so we use its
            // mousemove events for all data hover effects
            var maindrag = dragBox(gd, plotinfo, 0, 0,
                xa._length, ya._length, 'ns', 'ew');

            maindrag.onmousemove = function(evt) {
                fx.hover(gd, evt, subplot);
                fullLayout._lasthover = maindrag;
                fullLayout._hoversubplot = subplot;
            };

            /*
             * IMPORTANT:
             * We must check for the presence of the drag cover here.
             * If we don't, a 'mouseout' event is triggered on the
             * maindrag before each 'click' event, which has the effect
             * of clearing the hoverdata; thus, cancelling the click event.
             */
            maindrag.onmouseout = function(evt) {
                if(gd._dragging) return;

                dragElement.unhover(gd, evt);
            };

            maindrag.onclick = function(evt) {
                fx.click(gd, evt);
            };

            // corner draggers
            dragBox(gd, plotinfo, -DRAGGERSIZE, -DRAGGERSIZE,
                DRAGGERSIZE, DRAGGERSIZE, 'n', 'w');
            dragBox(gd, plotinfo, xa._length, -DRAGGERSIZE,
                DRAGGERSIZE, DRAGGERSIZE, 'n', 'e');
            dragBox(gd, plotinfo, -DRAGGERSIZE, ya._length,
                DRAGGERSIZE, DRAGGERSIZE, 's', 'w');
            dragBox(gd, plotinfo, xa._length, ya._length,
                DRAGGERSIZE, DRAGGERSIZE, 's', 'e');
        }

        // x axis draggers - if you have overlaid plots,
        // these drag each axis separately
        if(isNumeric(y0)) {
            if(xa.anchor === 'free') y0 -= fullLayout._size.h * (1 - ya.domain[1]);
            dragBox(gd, plotinfo, xa._length * 0.1, y0,
                xa._length * 0.8, DRAGGERSIZE, '', 'ew');
            dragBox(gd, plotinfo, 0, y0,
                xa._length * 0.1, DRAGGERSIZE, '', 'w');
            dragBox(gd, plotinfo, xa._length * 0.9, y0,
                xa._length * 0.1, DRAGGERSIZE, '', 'e');
        }
        // y axis draggers
        if(isNumeric(x0)) {
            if(ya.anchor === 'free') x0 -= fullLayout._size.w * xa.domain[0];
            dragBox(gd, plotinfo, x0, ya._length * 0.1,
                DRAGGERSIZE, ya._length * 0.8, 'ns', '');
            dragBox(gd, plotinfo, x0, ya._length * 0.9,
                DRAGGERSIZE, ya._length * 0.1, 's', '');
            dragBox(gd, plotinfo, x0, 0,
                DRAGGERSIZE, ya._length * 0.1, 'n', '');
        }
    });

    // In case you mousemove over some hovertext, send it to fx.hover too
    // we do this so that we can put the hover text in front of everything,
    // but still be able to interact with everything as if it isn't there
    var hoverLayer = fullLayout._hoverlayer.node();

    hoverLayer.onmousemove = function(evt) {
        evt.target = fullLayout._lasthover;
        fx.hover(gd, evt, fullLayout._hoversubplot);
    };

    hoverLayer.onclick = function(evt) {
        evt.target = fullLayout._lasthover;
        fx.click(gd, evt);
    };

    // also delegate mousedowns... TODO: does this actually work?
    hoverLayer.onmousedown = function(evt) {
        fullLayout._lasthover.onmousedown(evt);
    };
};

// hover labels for multiple horizontal bars get tilted by some angle,
// then need to be offset differently if they overlap
var YANGLE = constants.YANGLE,
    YA_RADIANS = Math.PI * YANGLE / 180,

    // expansion of projected height
    YFACTOR = 1 / Math.sin(YA_RADIANS),

    // to make the appropriate post-rotation x offset,
    // you need both x and y offsets
    YSHIFTX = Math.cos(YA_RADIANS),
    YSHIFTY = Math.sin(YA_RADIANS);

// convenience functions for mapping all relevant axes
function flat(subplots, v) {
    var out = [];
    for(var i = subplots.length; i > 0; i--) out.push(v);
    return out;
}

function p2c(axArray, v) {
    var out = [];
    for(var i = 0; i < axArray.length; i++) out.push(axArray[i].p2c(v));
    return out;
}

function quadrature(dx, dy) {
    return function(di) {
        var x = dx(di),
            y = dy(di);
        return Math.sqrt(x * x + y * y);
    };
}

// size and display constants for hover text
var HOVERARROWSIZE = constants.HOVERARROWSIZE,
    HOVERTEXTPAD = constants.HOVERTEXTPAD,
    HOVERFONTSIZE = constants.HOVERFONTSIZE,
    HOVERFONT = constants.HOVERFONT;

// fx.hover: highlight data on hover
// evt can be a mousemove event, or an object with data about what points
//   to hover on
//      {xpx,ypx[,hovermode]} - pixel locations from top left
//          (with optional overriding hovermode)
//      {xval,yval[,hovermode]} - data values
//      [{curveNumber,(pointNumber|xval and/or yval)}] -
//              array of specific points to highlight
//          pointNumber is a single integer if gd.data[curveNumber] is 1D,
//              or a two-element array if it's 2D
//          xval and yval are data values,
//              1D data may specify either or both,
//              2D data must specify both
// subplot is an id string (default "xy")
// makes use of gl.hovermode, which can be:
//      x (find the points with the closest x values, ie a column),
//      closest (find the single closest point)
//    internally there are two more that occasionally get used:
//      y (pick out a row - only used for multiple horizontal bar charts)
//      array (used when the user specifies an explicit
//          array of points to hover on)
//
// We wrap the hovers in a timer, to limit their frequency.
// The actual rendering is done by private functions
// hover() and unhover().

fx.hover = function(gd, evt, subplot) {
    if(typeof gd === 'string') gd = document.getElementById(gd);
    if(gd._lastHoverTime === undefined) gd._lastHoverTime = 0;

    // If we have an update queued, discard it now
    if(gd._hoverTimer !== undefined) {
        clearTimeout(gd._hoverTimer);
        gd._hoverTimer = undefined;
    }
    // Is it more than 100ms since the last update?  If so, force
    // an update now (synchronously) and exit
    if(Date.now() > gd._lastHoverTime + constants.HOVERMINTIME) {
        hover(gd, evt, subplot);
        gd._lastHoverTime = Date.now();
        return;
    }
    // Queue up the next hover for 100ms from now (if no further events)
    gd._hoverTimer = setTimeout(function() {
        hover(gd, evt, subplot);
        gd._lastHoverTime = Date.now();
        gd._hoverTimer = undefined;
    }, constants.HOVERMINTIME);
};

// The actual implementation is here:

function hover(gd, evt, subplot) {
    if(subplot === 'pie') {
        gd.emit('plotly_hover', {
            points: [evt]
        });
        return;
    }

    if(!subplot) subplot = 'xy';

    // if the user passed in an array of subplots,
    // use those instead of finding overlayed plots
    var subplots = Array.isArray(subplot) ? subplot : [subplot];

    var fullLayout = gd._fullLayout,
        plots = fullLayout._plots || [],
        plotinfo = plots[subplot];

    // list of all overlaid subplots to look at
    if(plotinfo) {
        var overlayedSubplots = plotinfo.overlays.map(function(pi) {
            return pi.id;
        });

        subplots = subplots.concat(overlayedSubplots);
    }

    var len = subplots.length,
        xaArray = new Array(len),
        yaArray = new Array(len);

    for(var i = 0; i < len; i++) {
        var spId = subplots[i];

        // 'cartesian' case
        var plotObj = plots[spId];
        if(plotObj) {

            // TODO make sure that fullLayout_plots axis refs
            // get updated properly so that we don't have
            // to use Axes.getFromId in general.

            xaArray[i] = Axes.getFromId(gd, plotObj.xaxis._id);
            yaArray[i] = Axes.getFromId(gd, plotObj.yaxis._id);
            continue;
        }

        // other subplot types
        var _subplot = fullLayout[spId]._subplot;
        xaArray[i] = _subplot.xaxis;
        yaArray[i] = _subplot.yaxis;
    }

    var hovermode = evt.hovermode || fullLayout.hovermode;

    if(['x', 'y', 'closest'].indexOf(hovermode) === -1 || !gd.calcdata ||
            gd.querySelector('.zoombox') || gd._dragging) {
        return dragElement.unhoverRaw(gd, evt);
    }

        // hoverData: the set of candidate points we've found to highlight
    var hoverData = [],

        // searchData: the data to search in. Mostly this is just a copy of
        // gd.calcdata, filtered to the subplot and overlays we're on
        // but if a point array is supplied it will be a mapping
        // of indicated curves
        searchData = [],

        // [x|y]valArray: the axis values of the hover event
        // mapped onto each of the currently selected overlaid subplots
        xvalArray,
        yvalArray,

        // used in loops
        itemnum,
        curvenum,
        cd,
        trace,
        subplotId,
        subploti,
        mode,
        xval,
        yval,
        pointData,
        closedataPreviousLength;

    // Figure out what we're hovering on:
    // mouse location or user-supplied data

    if(Array.isArray(evt)) {
        // user specified an array of points to highlight
        hovermode = 'array';
        for(itemnum = 0; itemnum < evt.length; itemnum++) {
            cd = gd.calcdata[evt[itemnum].curveNumber||0];
            if(cd[0].trace.hoverinfo !== 'skip') {
                searchData.push(cd);
            }
        }
    }
    else {
        for(curvenum = 0; curvenum < gd.calcdata.length; curvenum++) {
            cd = gd.calcdata[curvenum];
            trace = cd[0].trace;
            if(trace.hoverinfo !== 'skip' && subplots.indexOf(getSubplot(trace)) !== -1) {
                searchData.push(cd);
            }
        }

        // [x|y]px: the pixels (from top left) of the mouse location
        // on the currently selected plot area
        var xpx, ypx;

        // mouse event? ie is there a target element with
        // clientX and clientY values?
        if(evt.target && ('clientX' in evt) && ('clientY' in evt)) {

            // fire the beforehover event and quit if it returns false
            // note that we're only calling this on real mouse events, so
            // manual calls to fx.hover will always run.
            if(Events.triggerHandler(gd, 'plotly_beforehover', evt) === false) {
                return;
            }

            var dbb = evt.target.getBoundingClientRect();

            xpx = evt.clientX - dbb.left;
            ypx = evt.clientY - dbb.top;

            // in case hover was called from mouseout into hovertext,
            // it's possible you're not actually over the plot anymore
            if(xpx < 0 || xpx > dbb.width || ypx < 0 || ypx > dbb.height) {
                return dragElement.unhoverRaw(gd, evt);
            }
        }
        else {
            if('xpx' in evt) xpx = evt.xpx;
            else xpx = xaArray[0]._length / 2;

            if('ypx' in evt) ypx = evt.ypx;
            else ypx = yaArray[0]._length / 2;
        }

        if('xval' in evt) xvalArray = flat(subplots, evt.xval);
        else xvalArray = p2c(xaArray, xpx);

        if('yval' in evt) yvalArray = flat(subplots, evt.yval);
        else yvalArray = p2c(yaArray, ypx);

        if(!isNumeric(xvalArray[0]) || !isNumeric(yvalArray[0])) {
            Lib.warn('Fx.hover failed', evt, gd);
            return dragElement.unhoverRaw(gd, evt);
        }
    }

    // the pixel distance to beat as a matching point
    // in 'x' or 'y' mode this resets for each trace
    var distance = Infinity;

    // find the closest point in each trace
    // this is minimum dx and/or dy, depending on mode
    // and the pixel position for the label (labelXpx, labelYpx)
    for(curvenum = 0; curvenum < searchData.length; curvenum++) {
        cd = searchData[curvenum];

        // filter out invisible or broken data
        if(!cd || !cd[0] || !cd[0].trace || cd[0].trace.visible !== true) continue;

        trace = cd[0].trace;
        subplotId = getSubplot(trace);
        subploti = subplots.indexOf(subplotId);

        // within one trace mode can sometimes be overridden
        mode = hovermode;

        // container for new point, also used to pass info into module.hoverPoints
        pointData = {
            // trace properties
            cd: cd,
            trace: trace,
            xa: xaArray[subploti],
            ya: yaArray[subploti],
            name: (gd.data.length > 1 || trace.hoverinfo.indexOf('name') !== -1) ? trace.name : undefined,
            // point properties - override all of these
            index: false, // point index in trace - only used by plotly.js hoverdata consumers
            distance: Math.min(distance, constants.MAXDIST), // pixel distance or pseudo-distance
            color: Color.defaultLine, // trace color
            x0: undefined,
            x1: undefined,
            y0: undefined,
            y1: undefined,
            xLabelVal: undefined,
            yLabelVal: undefined,
            zLabelVal: undefined,
            text: undefined
        };

        // add ref to subplot object (non-cartesian case)
        if(fullLayout[subplotId]) {
            pointData.subplot = fullLayout[subplotId]._subplot;
        }

        closedataPreviousLength = hoverData.length;

        // for a highlighting array, figure out what
        // we're searching for with this element
        if(mode === 'array') {
            var selection = evt[curvenum];
            if('pointNumber' in selection) {
                pointData.index = selection.pointNumber;
                mode = 'closest';
            }
            else {
                mode = '';
                if('xval' in selection) {
                    xval = selection.xval;
                    mode = 'x';
                }
                if('yval' in selection) {
                    yval = selection.yval;
                    mode = mode ? 'closest' : 'y';
                }
            }
        }
        else {
            xval = xvalArray[subploti];
            yval = yvalArray[subploti];
        }

        // Now find the points.
        if(trace._module && trace._module.hoverPoints) {
            var newPoints = trace._module.hoverPoints(pointData, xval, yval, mode);
            if(newPoints) {
                var newPoint;
                for(var newPointNum = 0; newPointNum < newPoints.length; newPointNum++) {
                    newPoint = newPoints[newPointNum];
                    if(isNumeric(newPoint.x0) && isNumeric(newPoint.y0)) {
                        hoverData.push(cleanPoint(newPoint, hovermode));
                    }
                }
            }
        }
        else {
            Lib.log('Unrecognized trace type in hover:', trace);
        }

        // in closest mode, remove any existing (farther) points
        // and don't look any farther than this latest point (or points, if boxes)
        if(hovermode === 'closest' && hoverData.length > closedataPreviousLength) {
            hoverData.splice(0, closedataPreviousLength);
            distance = hoverData[0].distance;
        }
    }

    // nothing left: remove all labels and quit
    if(hoverData.length === 0) return dragElement.unhoverRaw(gd, evt);

    // if there's more than one horz bar trace,
    // rotate the labels so they don't overlap
    var rotateLabels = hovermode === 'y' && searchData.length > 1;

    hoverData.sort(function(d1, d2) { return d1.distance - d2.distance; });

    var bgColor = Color.combine(
        fullLayout.plot_bgcolor || Color.background,
        fullLayout.paper_bgcolor
    );

    var labelOpts = {
        hovermode: hovermode,
        rotateLabels: rotateLabels,
        bgColor: bgColor,
        container: fullLayout._hoverlayer,
        outerContainer: fullLayout._paperdiv
    };
    var hoverLabels = createHoverText(hoverData, labelOpts);

    hoverAvoidOverlaps(hoverData, rotateLabels ? 'xa' : 'ya');

    alignHoverText(hoverLabels, rotateLabels);

    // lastly, emit custom hover/unhover events
    var oldhoverdata = gd._hoverdata,
        newhoverdata = [];

    // pull out just the data that's useful to
    // other people and send it to the event
    for(itemnum = 0; itemnum < hoverData.length; itemnum++) {
        var pt = hoverData[itemnum];

        var out = {
            data: pt.trace._input,
            fullData: pt.trace,
            curveNumber: pt.trace.index,
            pointNumber: pt.index
        };

        if(pt.trace._module.eventData) out = pt.trace._module.eventData(out, pt);
        else {
            out.x = pt.xVal;
            out.y = pt.yVal;
            out.xaxis = pt.xa;
            out.yaxis = pt.ya;

            if(pt.zLabelVal !== undefined) out.z = pt.zLabelVal;
        }

        newhoverdata.push(out);
    }

    gd._hoverdata = newhoverdata;

    if(!hoverChanged(gd, evt, oldhoverdata)) return;

    if(oldhoverdata) {
        gd.emit('plotly_unhover', { points: oldhoverdata });
    }

    gd.emit('plotly_hover', {
        points: gd._hoverdata,
        xaxes: xaArray,
        yaxes: yaArray,
        xvals: xvalArray,
        yvals: yvalArray
    });
}

// look for either .subplot (currently just ternary)
// or xaxis and yaxis attributes
function getSubplot(trace) {
    return trace.subplot || (trace.xaxis + trace.yaxis) || trace.geo;
}

fx.getDistanceFunction = function(mode, dx, dy, dxy) {
    if(mode === 'closest') return dxy || quadrature(dx, dy);
    return mode === 'x' ? dx : dy;
};

fx.getClosest = function(cd, distfn, pointData) {
    // do we already have a point number? (array mode only)
    if(pointData.index !== false) {
        if(pointData.index >= 0 && pointData.index < cd.length) {
            pointData.distance = 0;
        }
        else pointData.index = false;
    }
    else {
        // apply the distance function to each data point
        // this is the longest loop... if this bogs down, we may need
        // to create pre-sorted data (by x or y), not sure how to
        // do this for 'closest'
        for(var i = 0; i < cd.length; i++) {
            var newDistance = distfn(cd[i]);
            if(newDistance <= pointData.distance) {
                pointData.index = i;
                pointData.distance = newDistance;
            }
        }
    }
    return pointData;
};

function cleanPoint(d, hovermode) {
    d.posref = hovermode === 'y' ? (d.x0 + d.x1) / 2 : (d.y0 + d.y1) / 2;

    // then constrain all the positions to be on the plot
    d.x0 = Lib.constrain(d.x0, 0, d.xa._length);
    d.x1 = Lib.constrain(d.x1, 0, d.xa._length);
    d.y0 = Lib.constrain(d.y0, 0, d.ya._length);
    d.y1 = Lib.constrain(d.y1, 0, d.ya._length);

    // and convert the x and y label values into objects
    // formatted as text, with font info
    var logOffScale;
    if(d.xLabelVal !== undefined) {
        logOffScale = (d.xa.type === 'log' && d.xLabelVal <= 0);
        var xLabelObj = Axes.tickText(d.xa,
                d.xa.c2l(logOffScale ? -d.xLabelVal : d.xLabelVal), 'hover');
        if(logOffScale) {
            if(d.xLabelVal === 0) d.xLabel = '0';
            else d.xLabel = '-' + xLabelObj.text;
        }
        // TODO: should we do something special if the axis calendar and
        // the data calendar are different? Somehow display both dates with
        // their system names? Right now it will just display in the axis calendar
        // but users could add the other one as text.
        else d.xLabel = xLabelObj.text;
        d.xVal = d.xa.c2d(d.xLabelVal);
    }

    if(d.yLabelVal !== undefined) {
        logOffScale = (d.ya.type === 'log' && d.yLabelVal <= 0);
        var yLabelObj = Axes.tickText(d.ya,
                d.ya.c2l(logOffScale ? -d.yLabelVal : d.yLabelVal), 'hover');
        if(logOffScale) {
            if(d.yLabelVal === 0) d.yLabel = '0';
            else d.yLabel = '-' + yLabelObj.text;
        }
        // TODO: see above TODO
        else d.yLabel = yLabelObj.text;
        d.yVal = d.ya.c2d(d.yLabelVal);
    }

    if(d.zLabelVal !== undefined) d.zLabel = String(d.zLabelVal);

    // for box means and error bars, add the range to the label
    if(!isNaN(d.xerr) && !(d.xa.type === 'log' && d.xerr <= 0)) {
        var xeText = Axes.tickText(d.xa, d.xa.c2l(d.xerr), 'hover').text;
        if(d.xerrneg !== undefined) {
            d.xLabel += ' +' + xeText + ' / -' +
                Axes.tickText(d.xa, d.xa.c2l(d.xerrneg), 'hover').text;
        }
        else d.xLabel += ' ± ' + xeText;

        // small distance penalty for error bars, so that if there are
        // traces with errors and some without, the error bar label will
        // hoist up to the point
        if(hovermode === 'x') d.distance += 1;
    }
    if(!isNaN(d.yerr) && !(d.ya.type === 'log' && d.yerr <= 0)) {
        var yeText = Axes.tickText(d.ya, d.ya.c2l(d.yerr), 'hover').text;
        if(d.yerrneg !== undefined) {
            d.yLabel += ' +' + yeText + ' / -' +
                Axes.tickText(d.ya, d.ya.c2l(d.yerrneg), 'hover').text;
        }
        else d.yLabel += ' ± ' + yeText;

        if(hovermode === 'y') d.distance += 1;
    }

    var infomode = d.trace.hoverinfo;
    if(infomode !== 'all') {
        infomode = infomode.split('+');
        if(infomode.indexOf('x') === -1) d.xLabel = undefined;
        if(infomode.indexOf('y') === -1) d.yLabel = undefined;
        if(infomode.indexOf('z') === -1) d.zLabel = undefined;
        if(infomode.indexOf('text') === -1) d.text = undefined;
        if(infomode.indexOf('name') === -1) d.name = undefined;
    }

    return d;
}

fx.loneHover = function(hoverItem, opts) {
    // draw a single hover item in a pre-existing svg container somewhere
    // hoverItem should have keys:
    //    - x and y (or x0, x1, y0, and y1):
    //      the pixel position to mark, relative to opts.container
    //    - xLabel, yLabel, zLabel, text, and name:
    //      info to go in the label
    //    - color:
    //      the background color for the label. text & outline color will
    //      be chosen black or white to contrast with this
    // opts should have keys:
    //    - bgColor:
    //      the background color this is against, used if the trace is
    //      non-opaque, and for the name, which goes outside the box
    //    - container:
    //      a dom <svg> element - must be big enough to contain the whole
    //      hover label
    var pointData = {
        color: hoverItem.color || Color.defaultLine,
        x0: hoverItem.x0 || hoverItem.x || 0,
        x1: hoverItem.x1 || hoverItem.x || 0,
        y0: hoverItem.y0 || hoverItem.y || 0,
        y1: hoverItem.y1 || hoverItem.y || 0,
        xLabel: hoverItem.xLabel,
        yLabel: hoverItem.yLabel,
        zLabel: hoverItem.zLabel,
        text: hoverItem.text,
        name: hoverItem.name,
        idealAlign: hoverItem.idealAlign,

        // filler to make createHoverText happy
        trace: {
            index: 0,
            hoverinfo: ''
        },
        xa: {_offset: 0},
        ya: {_offset: 0},
        index: 0
    };

    var container3 = d3.select(opts.container),
        outerContainer3 = opts.outerContainer ?
            d3.select(opts.outerContainer) : container3;

    var fullOpts = {
        hovermode: 'closest',
        rotateLabels: false,
        bgColor: opts.bgColor || Color.background,
        container: container3,
        outerContainer: outerContainer3
    };

    var hoverLabel = createHoverText([pointData], fullOpts);
    alignHoverText(hoverLabel, fullOpts.rotateLabels);

    return hoverLabel.node();
};

fx.loneUnhover = function(containerOrSelection) {
    var selection = containerOrSelection instanceof d3.selection ?
            containerOrSelection :
            d3.select(containerOrSelection);

    selection.selectAll('g.hovertext').remove();
};

function createHoverText(hoverData, opts) {
    var hovermode = opts.hovermode,
        rotateLabels = opts.rotateLabels,
        bgColor = opts.bgColor,
        container = opts.container,
        outerContainer = opts.outerContainer,

        c0 = hoverData[0],
        xa = c0.xa,
        ya = c0.ya,
        commonAttr = hovermode === 'y' ? 'yLabel' : 'xLabel',
        t0 = c0[commonAttr],
        t00 = (String(t0) || '').split(' ')[0],
        outerContainerBB = outerContainer.node().getBoundingClientRect(),
        outerTop = outerContainerBB.top,
        outerWidth = outerContainerBB.width,
        outerHeight = outerContainerBB.height;

    // show the common label, if any, on the axis
    // never show a common label in array mode,
    // even if sometimes there could be one
    var showCommonLabel = c0.distance <= constants.MAXDIST &&
                          (hovermode === 'x' || hovermode === 'y');

    // all hover traces hoverinfo must contain the hovermode
    // to have common labels
    var i, traceHoverinfo;
    for(i = 0; i < hoverData.length; i++) {
        traceHoverinfo = hoverData[i].trace.hoverinfo;
        var parts = traceHoverinfo.split('+');
        if(parts.indexOf('all') === -1 &&
            parts.indexOf(hovermode) === -1) {
            showCommonLabel = false;
            break;
        }
    }

    var commonLabel = container.selectAll('g.axistext')
        .data(showCommonLabel ? [0] : []);
    commonLabel.enter().append('g')
        .classed('axistext', true);
    commonLabel.exit().remove();

    commonLabel.each(function() {
        var label = d3.select(this),
            lpath = label.selectAll('path').data([0]),
            ltext = label.selectAll('text').data([0]);

        lpath.enter().append('path')
            .style({fill: Color.defaultLine, 'stroke-width': '1px', stroke: Color.background});
        ltext.enter().append('text')
            .call(Drawing.font, HOVERFONT, HOVERFONTSIZE, Color.background)
            // prohibit tex interpretation until we can handle
            // tex and regular text together
            .attr('data-notex', 1);

        ltext.text(t0)
            .call(svgTextUtils.convertToTspans)
            .call(Drawing.setPosition, 0, 0)
          .selectAll('tspan.line')
            .call(Drawing.setPosition, 0, 0);
        label.attr('transform', '');

        var tbb = ltext.node().getBoundingClientRect();
        if(hovermode === 'x') {
            ltext.attr('text-anchor', 'middle')
                .call(Drawing.setPosition, 0, (xa.side === 'top' ?
                    (outerTop - tbb.bottom - HOVERARROWSIZE - HOVERTEXTPAD) :
                    (outerTop - tbb.top + HOVERARROWSIZE + HOVERTEXTPAD)))
                .selectAll('tspan.line')
                    .attr({
                        x: ltext.attr('x'),
                        y: ltext.attr('y')
                    });

            var topsign = xa.side === 'top' ? '-' : '';
            lpath.attr('d', 'M0,0' +
                'L' + HOVERARROWSIZE + ',' + topsign + HOVERARROWSIZE +
                'H' + (HOVERTEXTPAD + tbb.width / 2) +
                'v' + topsign + (HOVERTEXTPAD * 2 + tbb.height) +
                'H-' + (HOVERTEXTPAD + tbb.width / 2) +
                'V' + topsign + HOVERARROWSIZE + 'H-' + HOVERARROWSIZE + 'Z');

            label.attr('transform', 'translate(' +
                (xa._offset + (c0.x0 + c0.x1) / 2) + ',' +
                (ya._offset + (xa.side === 'top' ? 0 : ya._length)) + ')');
        }
        else {
            ltext.attr('text-anchor', ya.side === 'right' ? 'start' : 'end')
                .call(Drawing.setPosition,
                    (ya.side === 'right' ? 1 : -1) * (HOVERTEXTPAD + HOVERARROWSIZE),
                    outerTop - tbb.top - tbb.height / 2)
                .selectAll('tspan.line')
                    .attr({
                        x: ltext.attr('x'),
                        y: ltext.attr('y')
                    });

            var leftsign = ya.side === 'right' ? '' : '-';
            lpath.attr('d', 'M0,0' +
                'L' + leftsign + HOVERARROWSIZE + ',' + HOVERARROWSIZE +
                'V' + (HOVERTEXTPAD + tbb.height / 2) +
                'h' + leftsign + (HOVERTEXTPAD * 2 + tbb.width) +
                'V-' + (HOVERTEXTPAD + tbb.height / 2) +
                'H' + leftsign + HOVERARROWSIZE + 'V-' + HOVERARROWSIZE + 'Z');

            label.attr('transform', 'translate(' +
                (xa._offset + (ya.side === 'right' ? xa._length : 0)) + ',' +
                (ya._offset + (c0.y0 + c0.y1) / 2) + ')');
        }
        // remove the "close but not quite" points
        // because of error bars, only take up to a space
        hoverData = hoverData.filter(function(d) {
            return (d.zLabelVal !== undefined) ||
                (d[commonAttr] || '').split(' ')[0] === t00;
        });
    });

    // show all the individual labels

    // first create the objects
    var hoverLabels = container.selectAll('g.hovertext')
        .data(hoverData, function(d) {
            return [d.trace.index, d.index, d.x0, d.y0, d.name, d.attr, d.xa, d.ya || ''].join(',');
        });
    hoverLabels.enter().append('g')
        .classed('hovertext', true)
        .each(function() {
            var g = d3.select(this);
            // trace name label (rect and text.name)
            g.append('rect')
                .call(Color.fill, Color.addOpacity(bgColor, 0.8));
            g.append('text').classed('name', true)
                .call(Drawing.font, HOVERFONT, HOVERFONTSIZE);
            // trace data label (path and text.nums)
            g.append('path')
                .style('stroke-width', '1px');
            g.append('text').classed('nums', true)
                .call(Drawing.font, HOVERFONT, HOVERFONTSIZE);
        });
    hoverLabels.exit().remove();

    // then put the text in, position the pointer to the data,
    // and figure out sizes
    hoverLabels.each(function(d) {
        var g = d3.select(this).attr('transform', ''),
            name = '',
            text = '',
            // combine possible non-opaque trace color with bgColor
            baseColor = Color.opacity(d.color) ?
                d.color : Color.defaultLine,
            traceColor = Color.combine(baseColor, bgColor),

            // find a contrasting color for border and text
            contrastColor = tinycolor(traceColor).getBrightness() > 128 ?
                '#000' : Color.background;


        if(d.name && d.zLabelVal === undefined) {
            // strip out any html elements from d.name (if it exists at all)
            // Note that this isn't an XSS vector, only because it never gets
            // attached to the DOM
            var tmp = document.createElement('p');
            tmp.innerHTML = d.name;
            name = tmp.textContent || '';

            if(name.length > 15) name = name.substr(0, 12) + '...';
        }

        // used by other modules (initially just ternary) that
        // manage their own hoverinfo independent of cleanPoint
        // the rest of this will still apply, so such modules
        // can still put things in (x|y|z)Label, text, and name
        // and hoverinfo will still determine their visibility
        if(d.extraText !== undefined) text += d.extraText;

        if(d.zLabel !== undefined) {
            if(d.xLabel !== undefined) text += 'x: ' + d.xLabel + '<br>';
            if(d.yLabel !== undefined) text += 'y: ' + d.yLabel + '<br>';
            text += (text ? 'z: ' : '') + d.zLabel;
        }
        else if(showCommonLabel && d[hovermode + 'Label'] === t0) {
            text = d[(hovermode === 'x' ? 'y' : 'x') + 'Label'] || '';
        }
        else if(d.xLabel === undefined) {
            if(d.yLabel !== undefined) text = d.yLabel;
        }
        else if(d.yLabel === undefined) text = d.xLabel;
        else text = '(' + d.xLabel + ', ' + d.yLabel + ')';

        if(d.text && !Array.isArray(d.text)) text += (text ? '<br>' : '') + d.text;

        // if 'text' is empty at this point,
        // put 'name' in main label and don't show secondary label
        if(text === '') {
            // if 'name' is also empty, remove entire label
            if(name === '') g.remove();
            text = name;
        }

        // main label
        var tx = g.select('text.nums')
            .style('fill', contrastColor)
            .call(Drawing.setPosition, 0, 0)
            .text(text)
            .attr('data-notex', 1)
            .call(svgTextUtils.convertToTspans);
        tx.selectAll('tspan.line')
            .call(Drawing.setPosition, 0, 0);

        var tx2 = g.select('text.name'),
            tx2width = 0;

        // secondary label for non-empty 'name'
        if(name && name !== text) {
            tx2.style('fill', traceColor)
                .text(name)
                .call(Drawing.setPosition, 0, 0)
                .attr('data-notex', 1)
                .call(svgTextUtils.convertToTspans);
            tx2.selectAll('tspan.line')
                .call(Drawing.setPosition, 0, 0);
            tx2width = tx2.node().getBoundingClientRect().width + 2 * HOVERTEXTPAD;
        }
        else {
            tx2.remove();
            g.select('rect').remove();
        }

        g.select('path')
            .style({
                fill: traceColor,
                stroke: contrastColor
            });
        var tbb = tx.node().getBoundingClientRect(),
            htx = d.xa._offset + (d.x0 + d.x1) / 2,
            hty = d.ya._offset + (d.y0 + d.y1) / 2,
            dx = Math.abs(d.x1 - d.x0),
            dy = Math.abs(d.y1 - d.y0),
            txTotalWidth = tbb.width + HOVERARROWSIZE + HOVERTEXTPAD + tx2width,
            anchorStartOK,
            anchorEndOK;

        d.ty0 = outerTop - tbb.top;
        d.bx = tbb.width + 2 * HOVERTEXTPAD;
        d.by = tbb.height + 2 * HOVERTEXTPAD;
        d.anchor = 'start';
        d.txwidth = tbb.width;
        d.tx2width = tx2width;
        d.offset = 0;

        if(rotateLabels) {
            d.pos = htx;
            anchorStartOK = hty + dy / 2 + txTotalWidth <= outerHeight;
            anchorEndOK = hty - dy / 2 - txTotalWidth >= 0;
            if((d.idealAlign === 'top' || !anchorStartOK) && anchorEndOK) {
                hty -= dy / 2;
                d.anchor = 'end';
            } else if(anchorStartOK) {
                hty += dy / 2;
                d.anchor = 'start';
            } else d.anchor = 'middle';
        }
        else {
            d.pos = hty;
            anchorStartOK = htx + dx / 2 + txTotalWidth <= outerWidth;
            anchorEndOK = htx - dx / 2 - txTotalWidth >= 0;
            if((d.idealAlign === 'left' || !anchorStartOK) && anchorEndOK) {
                htx -= dx / 2;
                d.anchor = 'end';
            } else if(anchorStartOK) {
                htx += dx / 2;
                d.anchor = 'start';
            } else d.anchor = 'middle';
        }

        tx.attr('text-anchor', d.anchor);
        if(tx2width) tx2.attr('text-anchor', d.anchor);
        g.attr('transform', 'translate(' + htx + ',' + hty + ')' +
            (rotateLabels ? 'rotate(' + YANGLE + ')' : ''));
    });

    return hoverLabels;
}

// Make groups of touching points, and within each group
// move each point so that no labels overlap, but the average
// label position is the same as it was before moving. Indicentally,
// this is equivalent to saying all the labels are on equal linear
// springs about their initial position. Initially, each point is
// its own group, but as we find overlaps we will clump the points.
//
// Also, there are hard constraints at the edges of the graphs,
// that push all groups to the middle so they are visible. I don't
// know what happens if the group spans all the way from one edge to
// the other, though it hardly matters - there's just too much
// information then.
function hoverAvoidOverlaps(hoverData, ax) {
    var nummoves = 0,

        // make groups of touching points
        pointgroups = hoverData
            .map(function(d, i) {
                var axis = d[ax];
                return [{
                    i: i,
                    dp: 0,
                    pos: d.pos,
                    posref: d.posref,
                    size: d.by * (axis._id.charAt(0) === 'x' ? YFACTOR : 1) / 2,
                    pmin: axis._offset,
                    pmax: axis._offset + axis._length
                }];
            })
            .sort(function(a, b) { return a[0].posref - b[0].posref; }),
        donepositioning,
        topOverlap,
        bottomOverlap,
        i, j,
        pti,
        sumdp;

    function constrainGroup(grp) {
        var minPt = grp[0],
            maxPt = grp[grp.length - 1];

        // overlap with the top - positive vals are overlaps
        topOverlap = minPt.pmin - minPt.pos - minPt.dp + minPt.size;

        // overlap with the bottom - positive vals are overlaps
        bottomOverlap = maxPt.pos + maxPt.dp + maxPt.size - minPt.pmax;

        // check for min overlap first, so that we always
        // see the largest labels
        // allow for .01px overlap, so we don't get an
        // infinite loop from rounding errors
        if(topOverlap > 0.01) {
            for(j = grp.length - 1; j >= 0; j--) grp[j].dp += topOverlap;
            donepositioning = false;
        }
        if(bottomOverlap < 0.01) return;
        if(topOverlap < -0.01) {
            // make sure we're not pushing back and forth
            for(j = grp.length - 1; j >= 0; j--) grp[j].dp -= bottomOverlap;
            donepositioning = false;
        }
        if(!donepositioning) return;

        // no room to fix positioning, delete off-screen points

        // first see how many points we need to delete
        var deleteCount = 0;
        for(i = 0; i < grp.length; i++) {
            pti = grp[i];
            if(pti.pos + pti.dp + pti.size > minPt.pmax) deleteCount++;
        }

        // start by deleting points whose data is off screen
        for(i = grp.length - 1; i >= 0; i--) {
            if(deleteCount <= 0) break;
            pti = grp[i];

            // pos has already been constrained to [pmin,pmax]
            // so look for points close to that to delete
            if(pti.pos > minPt.pmax - 1) {
                pti.del = true;
                deleteCount--;
            }
        }
        for(i = 0; i < grp.length; i++) {
            if(deleteCount <= 0) break;
            pti = grp[i];

            // pos has already been constrained to [pmin,pmax]
            // so look for points close to that to delete
            if(pti.pos < minPt.pmin + 1) {
                pti.del = true;
                deleteCount--;

                // shift the whole group minus into this new space
                bottomOverlap = pti.size * 2;
                for(j = grp.length - 1; j >= 0; j--) grp[j].dp -= bottomOverlap;
            }
        }
        // then delete points that go off the bottom
        for(i = grp.length - 1; i >= 0; i--) {
            if(deleteCount <= 0) break;
            pti = grp[i];
            if(pti.pos + pti.dp + pti.size > minPt.pmax) {
                pti.del = true;
                deleteCount--;
            }
        }
    }

    // loop through groups, combining them if they overlap,
    // until nothing moves
    while(!donepositioning && nummoves <= hoverData.length) {
        // to avoid infinite loops, don't move more times
        // than there are traces
        nummoves++;

        // assume nothing will move in this iteration,
        // reverse this if it does
        donepositioning = true;
        i = 0;
        while(i < pointgroups.length - 1) {
                // the higher (g0) and lower (g1) point group
            var g0 = pointgroups[i],
                g1 = pointgroups[i + 1],

                // the lowest point in the higher group (p0)
                // the highest point in the lower group (p1)
                p0 = g0[g0.length - 1],
                p1 = g1[0];
            topOverlap = p0.pos + p0.dp + p0.size - p1.pos - p1.dp + p1.size;

            // Only group points that lie on the same axes
            if(topOverlap > 0.01 && (p0.pmin === p1.pmin) && (p0.pmax === p1.pmax)) {
                // push the new point(s) added to this group out of the way
                for(j = g1.length - 1; j >= 0; j--) g1[j].dp += topOverlap;

                // add them to the group
                g0.push.apply(g0, g1);
                pointgroups.splice(i + 1, 1);

                // adjust for minimum average movement
                sumdp = 0;
                for(j = g0.length - 1; j >= 0; j--) sumdp += g0[j].dp;
                bottomOverlap = sumdp / g0.length;
                for(j = g0.length - 1; j >= 0; j--) g0[j].dp -= bottomOverlap;
                donepositioning = false;
            }
            else i++;
        }

        // check if we're going off the plot on either side and fix
        pointgroups.forEach(constrainGroup);
    }

    // now put these offsets into hoverData
    for(i = pointgroups.length - 1; i >= 0; i--) {
        var grp = pointgroups[i];
        for(j = grp.length - 1; j >= 0; j--) {
            var pt = grp[j],
                hoverPt = hoverData[pt.i];
            hoverPt.offset = pt.dp;
            hoverPt.del = pt.del;
        }
    }
}

function alignHoverText(hoverLabels, rotateLabels) {
    // finally set the text positioning relative to the data and draw the
    // box around it
    hoverLabels.each(function(d) {
        var g = d3.select(this);
        if(d.del) {
            g.remove();
            return;
        }
        var horzSign = d.anchor === 'end' ? -1 : 1,
            tx = g.select('text.nums'),
            alignShift = {start: 1, end: -1, middle: 0}[d.anchor],
            txx = alignShift * (HOVERARROWSIZE + HOVERTEXTPAD),
            tx2x = txx + alignShift * (d.txwidth + HOVERTEXTPAD),
            offsetX = 0,
            offsetY = d.offset;
        if(d.anchor === 'middle') {
            txx -= d.tx2width / 2;
            tx2x -= d.tx2width / 2;
        }
        if(rotateLabels) {
            offsetY *= -YSHIFTY;
            offsetX = d.offset * YSHIFTX;
        }

        g.select('path').attr('d', d.anchor === 'middle' ?
            // middle aligned: rect centered on data
            ('M-' + (d.bx / 2) + ',-' + (d.by / 2) + 'h' + d.bx + 'v' + d.by + 'h-' + d.bx + 'Z') :
            // left or right aligned: side rect with arrow to data
            ('M0,0L' + (horzSign * HOVERARROWSIZE + offsetX) + ',' + (HOVERARROWSIZE + offsetY) +
                'v' + (d.by / 2 - HOVERARROWSIZE) +
                'h' + (horzSign * d.bx) +
                'v-' + d.by +
                'H' + (horzSign * HOVERARROWSIZE + offsetX) +
                'V' + (offsetY - HOVERARROWSIZE) +
                'Z'));

        tx.call(Drawing.setPosition,
                txx + offsetX, offsetY + d.ty0 - d.by / 2 + HOVERTEXTPAD)
            .selectAll('tspan.line')
                .attr({
                    x: tx.attr('x'),
                    y: tx.attr('y')
                });

        if(d.tx2width) {
            g.select('text.name, text.name tspan.line')
                .call(Drawing.setPosition,
                    tx2x + alignShift * HOVERTEXTPAD + offsetX,
                    offsetY + d.ty0 - d.by / 2 + HOVERTEXTPAD);
            g.select('rect')
                .call(Drawing.setRect,
                    tx2x + (alignShift - 1) * d.tx2width / 2 + offsetX,
                    offsetY - d.by / 2 - 1,
                    d.tx2width, d.by + 2);
        }
    });
}

function hoverChanged(gd, evt, oldhoverdata) {
    // don't emit any events if nothing changed or
    // if fx.hover was called manually
    if(!evt.target) return false;
    if(!oldhoverdata || oldhoverdata.length !== gd._hoverdata.length) return true;

    for(var i = oldhoverdata.length - 1; i >= 0; i--) {
        var oldPt = oldhoverdata[i],
            newPt = gd._hoverdata[i];
        if(oldPt.curveNumber !== newPt.curveNumber ||
                String(oldPt.pointNumber) !== String(newPt.pointNumber)) {
            return true;
        }
    }
    return false;
}

// on click
fx.click = function(gd, evt) {
    if(gd._hoverdata && evt && evt.target) {
        gd.emit('plotly_click', {points: gd._hoverdata});
        // why do we get a double event without this???
        if(evt.stopImmediatePropagation) evt.stopImmediatePropagation();
    }
};


// for bar charts and others with finite-size objects: you must be inside
// it to see its hover info, so distance is infinite outside.
// But make distance inside be at least 1/4 MAXDIST, and a little bigger
// for bigger bars, to prioritize scatter and smaller bars over big bars

// note that for closest mode, two inbox's will get added in quadrature
// args are (signed) difference from the two opposite edges
// count one edge as in, so that over continuous ranges you never get a gap
fx.inbox = function(v0, v1) {
    if(v0 * v1 < 0 || v0 === 0) {
        return constants.MAXDIST * (0.6 - 0.3 / Math.max(3, Math.abs(v0 - v1)));
    }
    return Infinity;
};

},{"../../components/color":510,"../../components/dragelement":531,"../../components/drawing":533,"../../lib":610,"../../lib/events":602,"../../lib/svg_text_utils":625,"../layout_attributes":693,"./axes":642,"./constants":647,"./dragbox":648,"d3":86,"fast-isnumeric":97,"tinycolor2":985}],650:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var Lib = require('../../lib');
var Plots = require('../plots');
var Axes = require('./axes');
var constants = require('./constants');

exports.name = 'cartesian';

exports.attr = ['xaxis', 'yaxis'];

exports.idRoot = ['x', 'y'];

exports.idRegex = constants.idRegex;

exports.attrRegex = constants.attrRegex;

exports.attributes = require('./attributes');

exports.layoutAttributes = require('./layout_attributes');

exports.transitionAxes = require('./transition_axes');

exports.plot = function(gd, traces, transitionOpts, makeOnCompleteCallback) {
    var fullLayout = gd._fullLayout,
        subplots = Plots.getSubplotIds(fullLayout, 'cartesian'),
        calcdata = gd.calcdata,
        i;

    // If traces is not provided, then it's a complete replot and missing
    // traces are removed
    if(!Array.isArray(traces)) {
        traces = [];

        for(i = 0; i < calcdata.length; i++) {
            traces.push(i);
        }
    }

    for(i = 0; i < subplots.length; i++) {
        var subplot = subplots[i],
            subplotInfo = fullLayout._plots[subplot];

        // Get all calcdata for this subplot:
        var cdSubplot = [];
        var pcd;

        for(var j = 0; j < calcdata.length; j++) {
            var cd = calcdata[j],
                trace = cd[0].trace;

            // Skip trace if whitelist provided and it's not whitelisted:
            // if (Array.isArray(traces) && traces.indexOf(i) === -1) continue;
            if(trace.xaxis + trace.yaxis === subplot) {
                // If this trace is specifically requested, add it to the list:
                if(traces.indexOf(trace.index) !== -1) {
                    // Okay, so example: traces 0, 1, and 2 have fill = tonext. You animate
                    // traces 0 and 2. Trace 1 also needs to be updated, otherwise its fill
                    // is outdated. So this retroactively adds the previous trace if the
                    // traces are interdependent.
                    if(
                        pcd &&
                        pcd[0].trace.xaxis + pcd[0].trace.yaxis === subplot &&
                        ['tonextx', 'tonexty', 'tonext'].indexOf(trace.fill) !== -1 &&
                        cdSubplot.indexOf(pcd) === -1
                    ) {
                        cdSubplot.push(pcd);
                    }

                    cdSubplot.push(cd);
                }

                // Track the previous trace on this subplot for the retroactive-add step
                // above:
                pcd = cd;
            }
        }

        plotOne(gd, subplotInfo, cdSubplot, transitionOpts, makeOnCompleteCallback);
    }
};

function plotOne(gd, plotinfo, cdSubplot, transitionOpts, makeOnCompleteCallback) {
    var fullLayout = gd._fullLayout,
        modules = fullLayout._modules;

    // remove old traces, then redraw everything
    //
    // TODO: scatterlayer is manually excluded from this since it knows how
    // to update instead of fully removing and redrawing every time. The
    // remaining plot traces should also be able to do this. Once implemented,
    // we won't need this - which should sometimes be a big speedup.
    if(plotinfo.plot) {
        plotinfo.plot.selectAll('g:not(.scatterlayer)').selectAll('g.trace').remove();
    }

    // plot all traces for each module at once
    for(var j = 0; j < modules.length; j++) {
        var _module = modules[j];

        // skip over non-cartesian trace modules
        if(_module.basePlotModule.name !== 'cartesian') continue;

        // plot all traces of this type on this subplot at once
        var cdModule = [];
        for(var k = 0; k < cdSubplot.length; k++) {
            var cd = cdSubplot[k],
                trace = cd[0].trace;

            if((trace._module === _module) && (trace.visible === true)) {
                cdModule.push(cd);
            }
        }

        _module.plot(gd, plotinfo, cdModule, transitionOpts, makeOnCompleteCallback);
    }
}

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldModules = oldFullLayout._modules || [],
        newModules = newFullLayout._modules || [];

    var hadScatter, hasScatter, i;

    for(i = 0; i < oldModules.length; i++) {
        if(oldModules[i].name === 'scatter') {
            hadScatter = true;
            break;
        }
    }

    for(i = 0; i < newModules.length; i++) {
        if(newModules[i].name === 'scatter') {
            hasScatter = true;
            break;
        }
    }

    if(hadScatter && !hasScatter) {
        var oldPlots = oldFullLayout._plots,
            ids = Object.keys(oldPlots || {});

        for(i = 0; i < ids.length; i++) {
            var subplotInfo = oldPlots[ids[i]];

            if(subplotInfo.plot) {
                subplotInfo.plot.select('g.scatterlayer')
                    .selectAll('g.trace')
                    .remove();
            }
        }
    }

    var hadCartesian = (oldFullLayout._has && oldFullLayout._has('cartesian'));
    var hasCartesian = (newFullLayout._has && newFullLayout._has('cartesian'));

    if(hadCartesian && !hasCartesian) {
        var subplotLayers = oldFullLayout._cartesianlayer.selectAll('.subplot');

        subplotLayers.call(purgeSubplotLayers, oldFullLayout);
        oldFullLayout._defs.selectAll('.axesclip').remove();
    }
};

exports.drawFramework = function(gd) {
    var fullLayout = gd._fullLayout,
        subplotData = makeSubplotData(gd);

    var subplotLayers = fullLayout._cartesianlayer.selectAll('.subplot')
        .data(subplotData, Lib.identity);

    subplotLayers.enter().append('g')
        .attr('class', function(name) { return 'subplot ' + name; });

    subplotLayers.order();

    subplotLayers.exit()
        .call(purgeSubplotLayers, fullLayout);

    subplotLayers.each(function(name) {
        var plotinfo = fullLayout._plots[name];

        // keep ref to plot group
        plotinfo.plotgroup = d3.select(this);

        // initialize list of overlay subplots
        plotinfo.overlays = [];

        makeSubplotLayer(plotinfo);

        // fill in list of overlay subplots
        if(plotinfo.mainplot) {
            var mainplot = fullLayout._plots[plotinfo.mainplot];
            mainplot.overlays.push(plotinfo);
        }

        // make separate drag layers for each subplot,
        // but append them to paper rather than the plot groups,
        // so they end up on top of the rest
        plotinfo.draglayer = joinLayer(fullLayout._draggers, 'g', name);
    });
};

exports.rangePlot = function(gd, plotinfo, cdSubplot) {
    makeSubplotLayer(plotinfo);
    plotOne(gd, plotinfo, cdSubplot);
    Plots.style(gd);
};

function makeSubplotData(gd) {
    var fullLayout = gd._fullLayout,
        subplots = Object.keys(fullLayout._plots);

    var subplotData = [],
        overlays = [];

    for(var i = 0; i < subplots.length; i++) {
        var subplot = subplots[i],
            plotinfo = fullLayout._plots[subplot];

        var xa = plotinfo.xaxis,
            ya = plotinfo.yaxis;

        // is this subplot overlaid on another?
        // ax.overlaying is the id of another axis of the same
        // dimension that this one overlays to be an overlaid subplot,
        // the main plot must exist make sure we're not trying to
        // overlay on an axis that's already overlaying another
        var xa2 = Axes.getFromId(gd, xa.overlaying) || xa;
        if(xa2 !== xa && xa2.overlaying) {
            xa2 = xa;
            xa.overlaying = false;
        }

        var ya2 = Axes.getFromId(gd, ya.overlaying) || ya;
        if(ya2 !== ya && ya2.overlaying) {
            ya2 = ya;
            ya.overlaying = false;
        }

        var mainplot = xa2._id + ya2._id;
        if(mainplot !== subplot && subplots.indexOf(mainplot) !== -1) {
            plotinfo.mainplot = mainplot;
            plotinfo.mainplotinfo = fullLayout._plots[mainplot];
            overlays.push(subplot);

            // for now force overlays to overlay completely... so they
            // can drag together correctly and share backgrounds.
            // Later perhaps we make separate axis domain and
            // tick/line domain or something, so they can still share
            // the (possibly larger) dragger and background but don't
            // have to both be drawn over that whole domain
            xa.domain = xa2.domain.slice();
            ya.domain = ya2.domain.slice();
        }
        else {
            subplotData.push(subplot);
        }
    }

    // main subplots before overlays
    subplotData = subplotData.concat(overlays);

    return subplotData;
}

function makeSubplotLayer(plotinfo) {
    var plotgroup = plotinfo.plotgroup,
        id = plotinfo.id;

    // Layers to keep plot types in the right order.
    // from back to front:
    // 1. heatmaps, 2D histos and contour maps
    // 2. bars / 1D histos
    // 3. errorbars for bars and scatter
    // 4. scatter
    // 5. box plots
    function joinPlotLayers(parent) {
        joinLayer(parent, 'g', 'imagelayer');
        joinLayer(parent, 'g', 'maplayer');
        joinLayer(parent, 'g', 'barlayer');
        joinLayer(parent, 'g', 'boxlayer');
        joinLayer(parent, 'g', 'scatterlayer');
    }

    if(!plotinfo.mainplot) {
        plotinfo.bg = joinLayer(plotgroup, 'rect', 'bg');
        plotinfo.bg.style('stroke-width', 0);

        var backLayer = joinLayer(plotgroup, 'g', 'layer-subplot');
        plotinfo.shapelayer = joinLayer(backLayer, 'g', 'shapelayer');
        plotinfo.imagelayer = joinLayer(backLayer, 'g', 'imagelayer');

        plotinfo.gridlayer = joinLayer(plotgroup, 'g', 'gridlayer');
        plotinfo.overgrid = joinLayer(plotgroup, 'g', 'overgrid');

        plotinfo.zerolinelayer = joinLayer(plotgroup, 'g', 'zerolinelayer');
        plotinfo.overzero = joinLayer(plotgroup, 'g', 'overzero');

        plotinfo.plot = joinLayer(plotgroup, 'g', 'plot');
        plotinfo.overplot = joinLayer(plotgroup, 'g', 'overplot');

        plotinfo.xlines = joinLayer(plotgroup, 'path', 'xlines');
        plotinfo.ylines = joinLayer(plotgroup, 'path', 'ylines');
        plotinfo.overlines = joinLayer(plotgroup, 'g', 'overlines');

        plotinfo.xaxislayer = joinLayer(plotgroup, 'g', 'xaxislayer');
        plotinfo.yaxislayer = joinLayer(plotgroup, 'g', 'yaxislayer');
        plotinfo.overaxes = joinLayer(plotgroup, 'g', 'overaxes');
    }
    else {
        var mainplotinfo = plotinfo.mainplotinfo;

        // now make the components of overlaid subplots
        // overlays don't have backgrounds, and append all
        // their other components to the corresponding
        // extra groups of their main plots.

        plotinfo.gridlayer = joinLayer(mainplotinfo.overgrid, 'g', id);
        plotinfo.zerolinelayer = joinLayer(mainplotinfo.overzero, 'g', id);

        plotinfo.plot = joinLayer(mainplotinfo.overplot, 'g', id);
        plotinfo.xlines = joinLayer(mainplotinfo.overlines, 'path', id);
        plotinfo.ylines = joinLayer(mainplotinfo.overlines, 'path', id);
        plotinfo.xaxislayer = joinLayer(mainplotinfo.overaxes, 'g', id);
        plotinfo.yaxislayer = joinLayer(mainplotinfo.overaxes, 'g', id);
    }

    // common attributes for all subplots, overlays or not
    plotinfo.plot.call(joinPlotLayers);

    plotinfo.xlines
        .style('fill', 'none')
        .classed('crisp', true);

    plotinfo.ylines
        .style('fill', 'none')
        .classed('crisp', true);
}

function purgeSubplotLayers(layers, fullLayout) {
    if(!layers) return;

    layers.each(function(subplot) {
        var plotgroup = d3.select(this),
            clipId = 'clip' + fullLayout._uid + subplot + 'plot';

        plotgroup.remove();
        fullLayout._draggers.selectAll('g.' + subplot).remove();
        fullLayout._defs.select('#' + clipId).remove();

        // do not remove individual axis <clipPath>s here
        // as other subplots may need them
    });
}

function joinLayer(parent, nodeType, className) {
    var layer = parent.selectAll('.' + className)
        .data([0]);

    layer.enter().append(nodeType)
        .classed(className, true);

    return layer;
}

},{"../../lib":610,"../plots":702,"./attributes":641,"./axes":642,"./constants":647,"./layout_attributes":651,"./transition_axes":660,"d3":86}],651:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var fontAttrs = require('../font_attributes');
var colorAttrs = require('../../components/color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;

var constants = require('./constants');


module.exports = {
    color: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        role: 'style',
        description: [
            'Sets default for all colors associated with this axis',
            'all at once: line, font, tick, and grid colors.',
            'Grid color is lightened by blending this with the plot background',
            'Individual pieces can override this.'
        ].join(' ')
    },
    title: {
        valType: 'string',
        role: 'info',
        description: 'Sets the title of this axis.'
    },
    titlefont: extendFlat({}, fontAttrs, {
        description: [
            'Sets this axis\' title font.'
        ].join(' ')
    }),
    type: {
        valType: 'enumerated',
        // '-' means we haven't yet run autotype or couldn't find any data
        // it gets turned into linear in gd._fullLayout but not copied back
        // to gd.data like the others are.
        values: ['-', 'linear', 'log', 'date', 'category'],
        dflt: '-',
        role: 'info',
        description: [
            'Sets the axis type.',
            'By default, plotly attempts to determined the axis type',
            'by looking into the data of the traces that referenced',
            'the axis in question.'
        ].join(' ')
    },
    autorange: {
        valType: 'enumerated',
        values: [true, false, 'reversed'],
        dflt: true,
        role: 'style',
        description: [
            'Determines whether or not the range of this axis is',
            'computed in relation to the input data.',
            'See `rangemode` for more info.',
            'If `range` is provided, then `autorange` is set to *false*.'
        ].join(' ')
    },
    rangemode: {
        valType: 'enumerated',
        values: ['normal', 'tozero', 'nonnegative'],
        dflt: 'normal',
        role: 'style',
        description: [
            'If *normal*, the range is computed in relation to the extrema',
            'of the input data.',
            'If *tozero*`, the range extends to 0,',
            'regardless of the input data',
            'If *nonnegative*, the range is non-negative,',
            'regardless of the input data.'
        ].join(' ')
    },
    range: {
        valType: 'info_array',
        role: 'info',
        items: [
            {valType: 'any'},
            {valType: 'any'}
        ],
        description: [
            'Sets the range of this axis.',
            'If the axis `type` is *log*, then you must take the log of your',
            'desired range (e.g. to set the range from 1 to 100,',
            'set the range from 0 to 2).',
            'If the axis `type` is *date*, it should be date strings,',
            'like date data, though Date objects and unix milliseconds',
            'will be accepted and converted to strings.',
            'If the axis `type` is *category*, it should be numbers,',
            'using the scale where each category is assigned a serial',
            'number from zero in the order it appears.'
        ].join(' ')
    },

    fixedrange: {
        valType: 'boolean',
        dflt: false,
        role: 'info',
        description: [
            'Determines whether or not this axis is zoom-able.',
            'If true, then zoom is disabled.'
        ].join(' ')
    },
    // ticks
    tickmode: {
        valType: 'enumerated',
        values: ['auto', 'linear', 'array'],
        role: 'info',
        description: [
            'Sets the tick mode for this axis.',
            'If *auto*, the number of ticks is set via `nticks`.',
            'If *linear*, the placement of the ticks is determined by',
            'a starting position `tick0` and a tick step `dtick`',
            '(*linear* is the default value if `tick0` and `dtick` are provided).',
            'If *array*, the placement of the ticks is set via `tickvals`',
            'and the tick text is `ticktext`.',
            '(*array* is the default value if `tickvals` is provided).'
        ].join(' ')
    },
    nticks: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        role: 'style',
        description: [
            'Specifies the maximum number of ticks for the particular axis.',
            'The actual number of ticks will be chosen automatically to be',
            'less than or equal to `nticks`.',
            'Has an effect only if `tickmode` is set to *auto*.'
        ].join(' ')
    },
    tick0: {
        valType: 'any',
        role: 'style',
        description: [
            'Sets the placement of the first tick on this axis.',
            'Use with `dtick`.',
            'If the axis `type` is *log*, then you must take the log of your starting tick',
            '(e.g. to set the starting tick to 100, set the `tick0` to 2)',
            'except when `dtick`=*L<f>* (see `dtick` for more info).',
            'If the axis `type` is *date*, it should be a date string, like date data.',
            'If the axis `type` is *category*, it should be a number, using the scale where',
            'each category is assigned a serial number from zero in the order it appears.'
        ].join(' ')
    },
    dtick: {
        valType: 'any',
        role: 'style',
        description: [
            'Sets the step in-between ticks on this axis. Use with `tick0`.',
            'Must be a positive number, or special strings available to *log* and *date* axes.',
            'If the axis `type` is *log*, then ticks are set every 10^(n*dtick) where n',
            'is the tick number. For example,',
            'to set a tick mark at 1, 10, 100, 1000, ... set dtick to 1.',
            'To set tick marks at 1, 100, 10000, ... set dtick to 2.',
            'To set tick marks at 1, 5, 25, 125, 625, 3125, ... set dtick to log_10(5), or 0.69897000433.',
            '*log* has several special values; *L<f>*, where `f` is a positive number,',
            'gives ticks linearly spaced in value (but not position).',
            'For example `tick0` = 0.1, `dtick` = *L0.5* will put ticks at 0.1, 0.6, 1.1, 1.6 etc.',
            'To show powers of 10 plus small digits between, use *D1* (all digits) or *D2* (only 2 and 5).',
            '`tick0` is ignored for *D1* and *D2*.',
            'If the axis `type` is *date*, then you must convert the time to milliseconds.',
            'For example, to set the interval between ticks to one day,',
            'set `dtick` to 86400000.0.',
            '*date* also has special values *M<n>* gives ticks spaced by a number of months.',
            '`n` must be a positive integer.',
            'To set ticks on the 15th of every third month, set `tick0` to *2000-01-15* and `dtick` to *M3*.',
            'To set ticks every 4 years, set `dtick` to *M48*'
        ].join(' ')
    },
    tickvals: {
        valType: 'data_array',
        description: [
            'Sets the values at which ticks on this axis appear.',
            'Only has an effect if `tickmode` is set to *array*.',
            'Used with `ticktext`.'
        ].join(' ')
    },
    ticktext: {
        valType: 'data_array',
        description: [
            'Sets the text displayed at the ticks position via `tickvals`.',
            'Only has an effect if `tickmode` is set to *array*.',
            'Used with `tickvals`.'
        ].join(' ')
    },
    ticks: {
        valType: 'enumerated',
        values: ['outside', 'inside', ''],
        role: 'style',
        description: [
            'Determines whether ticks are drawn or not.',
            'If **, this axis\' ticks are not drawn.',
            'If *outside* (*inside*), this axis\' are drawn outside (inside)',
            'the axis lines.'
        ].join(' ')
    },
    mirror: {
        valType: 'enumerated',
        values: [true, 'ticks', false, 'all', 'allticks'],
        dflt: false,
        role: 'style',
        description: [
            'Determines if the axis lines or/and ticks are mirrored to',
            'the opposite side of the plotting area.',
            'If *true*, the axis lines are mirrored.',
            'If *ticks*, the axis lines and ticks are mirrored.',
            'If *false*, mirroring is disable.',
            'If *all*, axis lines are mirrored on all shared-axes subplots.',
            'If *allticks*, axis lines and ticks are mirrored',
            'on all shared-axes subplots.'
        ].join(' ')
    },
    ticklen: {
        valType: 'number',
        min: 0,
        dflt: 5,
        role: 'style',
        description: 'Sets the tick length (in px).'
    },
    tickwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: 'Sets the tick width (in px).'
    },
    tickcolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        role: 'style',
        description: 'Sets the tick color.'
    },
    showticklabels: {
        valType: 'boolean',
        dflt: true,
        role: 'style',
        description: 'Determines whether or not the tick labels are drawn.'
    },
    tickfont: extendFlat({}, fontAttrs, {
        description: 'Sets the tick font.'
    }),
    tickangle: {
        valType: 'angle',
        dflt: 'auto',
        role: 'style',
        description: [
            'Sets the angle of the tick labels with respect to the horizontal.',
            'For example, a `tickangle` of -90 draws the tick labels',
            'vertically.'
        ].join(' ')
    },
    tickprefix: {
        valType: 'string',
        dflt: '',
        role: 'style',
        description: 'Sets a tick label prefix.'
    },
    showtickprefix: {
        valType: 'enumerated',
        values: ['all', 'first', 'last', 'none'],
        dflt: 'all',
        role: 'style',
        description: [
            'If *all*, all tick labels are displayed with a prefix.',
            'If *first*, only the first tick is displayed with a prefix.',
            'If *last*, only the last tick is displayed with a suffix.',
            'If *none*, tick prefixes are hidden.'
        ].join(' ')
    },
    ticksuffix: {
        valType: 'string',
        dflt: '',
        role: 'style',
        description: 'Sets a tick label suffix.'
    },
    showticksuffix: {
        valType: 'enumerated',
        values: ['all', 'first', 'last', 'none'],
        dflt: 'all',
        role: 'style',
        description: 'Same as `showtickprefix` but for tick suffixes.'
    },
    showexponent: {
        valType: 'enumerated',
        values: ['all', 'first', 'last', 'none'],
        dflt: 'all',
        role: 'style',
        description: [
            'If *all*, all exponents are shown besides their significands.',
            'If *first*, only the exponent of the first tick is shown.',
            'If *last*, only the exponent of the last tick is shown.',
            'If *none*, no exponents appear.'
        ].join(' ')
    },
    exponentformat: {
        valType: 'enumerated',
        values: ['none', 'e', 'E', 'power', 'SI', 'B'],
        dflt: 'B',
        role: 'style',
        description: [
            'Determines a formatting rule for the tick exponents.',
            'For example, consider the number 1,000,000,000.',
            'If *none*, it appears as 1,000,000,000.',
            'If *e*, 1e+9.',
            'If *E*, 1E+9.',
            'If *power*, 1x10^9 (with 9 in a super script).',
            'If *SI*, 1G.',
            'If *B*, 1B.'
        ].join(' ')
    },
    separatethousands: {
        valType: 'boolean',
        dflt: false,
        role: 'style',
        description: [
            'If "true", even 4-digit integers are separated'
        ].join(' ')
    },
    tickformat: {
        valType: 'string',
        dflt: '',
        role: 'style',
        description: [
            'Sets the tick label formatting rule using d3 formatting mini-languages',
            'which are very similar to those in Python. For numbers, see:',
            'https://github.com/d3/d3-format/blob/master/README.md#locale_format',
            'And for dates see:',
            'https://github.com/d3/d3-time-format/blob/master/README.md#locale_format',
            'We add one item to d3\'s date formatter: *%{n}f* for fractional seconds',
            'with n digits. For example, *2016-10-13 09:15:23.456* with tickformat',
            '*%H~%M~%S.%2f* would display *09~15~23.46*'
        ].join(' ')
    },
    hoverformat: {
        valType: 'string',
        dflt: '',
        role: 'style',
        description: [
            'Sets the hover text formatting rule using d3 formatting mini-languages',
            'which are very similar to those in Python. For numbers, see:',
            'https://github.com/d3/d3-format/blob/master/README.md#locale_format',
            'And for dates see:',
            'https://github.com/d3/d3-time-format/blob/master/README.md#locale_format',
            'We add one item to d3\'s date formatter: *%{n}f* for fractional seconds',
            'with n digits. For example, *2016-10-13 09:15:23.456* with tickformat',
            '*%H~%M~%S.%2f* would display *09~15~23.46*'
        ].join(' ')
    },
    // lines and grids
    showline: {
        valType: 'boolean',
        dflt: false,
        role: 'style',
        description: [
            'Determines whether or not a line bounding this axis is drawn.'
        ].join(' ')
    },
    linecolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        role: 'style',
        description: 'Sets the axis line color.'
    },
    linewidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: 'Sets the width (in px) of the axis line.'
    },
    showgrid: {
        valType: 'boolean',
        role: 'style',
        description: [
            'Determines whether or not grid lines are drawn.',
            'If *true*, the grid lines are drawn at every tick mark.'
        ].join(' ')
    },
    gridcolor: {
        valType: 'color',
        dflt: colorAttrs.lightLine,
        role: 'style',
        description: 'Sets the color of the grid lines.'
    },
    gridwidth: {
        valType: 'number',
        min: 0,
        dflt: 1,
        role: 'style',
        description: 'Sets the width (in px) of the grid lines.'
    },
    zeroline: {
        valType: 'boolean',
        role: 'style',
        description: [
            'Determines whether or not a line is drawn at along the 0 value',
            'of this axis.',
            'If *true*, the zero line is drawn on top of the grid lines.'
        ].join(' ')
    },
    zerolinecolor: {
        valType: 'color',
        dflt: colorAttrs.defaultLine,
        role: 'style',
        description: 'Sets the line color of the zero line.'
    },
    zerolinewidth: {
        valType: 'number',
        dflt: 1,
        role: 'style',
        description: 'Sets the width (in px) of the zero line.'
    },
    // positioning attributes
    // anchor: not used directly, just put here for reference
    // values are any opposite-letter axis id
    anchor: {
        valType: 'enumerated',
        values: [
            'free',
            constants.idRegex.x.toString(),
            constants.idRegex.y.toString()
        ],
        role: 'info',
        description: [
            'If set to an opposite-letter axis id (e.g. `xaxis2`, `yaxis`), this axis is bound to',
            'the corresponding opposite-letter axis.',
            'If set to *free*, this axis\' position is determined by `position`.'
        ].join(' ')
    },
    // side: not used directly, as values depend on direction
    // values are top, bottom for x axes, and left, right for y
    side: {
        valType: 'enumerated',
        values: ['top', 'bottom', 'left', 'right'],
        role: 'info',
        description: [
            'Determines whether a x (y) axis is positioned',
            'at the *bottom* (*left*) or *top* (*right*)',
            'of the plotting area.'
        ].join(' ')
    },
    // overlaying: not used directly, just put here for reference
    // values are false and any other same-letter axis id that's not
    // itself overlaying anything
    overlaying: {
        valType: 'enumerated',
        values: [
            'free',
            constants.idRegex.x.toString(),
            constants.idRegex.y.toString()
        ],
        role: 'info',
        description: [
            'If set a same-letter axis id, this axis is overlaid on top of',
            'the corresponding same-letter axis.',
            'If *false*, this axis does not overlay any same-letter axes.'
        ].join(' ')
    },
    domain: {
        valType: 'info_array',
        role: 'info',
        items: [
            {valType: 'number', min: 0, max: 1},
            {valType: 'number', min: 0, max: 1}
        ],
        dflt: [0, 1],
        description: [
            'Sets the domain of this axis (in plot fraction).'
        ].join(' ')
    },
    position: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 0,
        role: 'style',
        description: [
            'Sets the position of this axis in the plotting space',
            '(in normalized coordinates).',
            'Only has an effect if `anchor` is set to *free*.'
        ].join(' ')
    },
    categoryorder: {
        valType: 'enumerated',
        values: [
            'trace', 'category ascending', 'category descending', 'array'
            /* , 'value ascending', 'value descending'*/ // value ascending / descending to be implemented later
        ],
        dflt: 'trace',
        role: 'info',
        description: [
            'Specifies the ordering logic for the case of categorical variables.',
            'By default, plotly uses *trace*, which specifies the order that is present in the data supplied.',
            'Set `categoryorder` to *category ascending* or *category descending* if order should be determined by',
            'the alphanumerical order of the category names.',
            /* 'Set `categoryorder` to *value ascending* or *value descending* if order should be determined by the',
            'numerical order of the values.',*/ // // value ascending / descending to be implemented later
            'Set `categoryorder` to *array* to derive the ordering from the attribute `categoryarray`. If a category',
            'is not found in the `categoryarray` array, the sorting behavior for that attribute will be identical to',
            'the *trace* mode. The unspecified categories will follow the categories in `categoryarray`.'
        ].join(' ')
    },
    categoryarray: {
        valType: 'data_array',
        role: 'info',
        description: [
            'Sets the order in which categories on this axis appear.',
            'Only has an effect if `categoryorder` is set to *array*.',
            'Used with `categoryorder`.'
        ].join(' ')
    },

    _deprecated: {
        autotick: {
            valType: 'boolean',
            role: 'info',
            description: [
                'Obsolete.',
                'Set `tickmode` to *auto* for old `autotick` *true* behavior.',
                'Set `tickmode` to *linear* for `autotick` *false*.'
            ].join(' ')
        }
    }
};

},{"../../components/color/attributes":509,"../../lib/extend":603,"../font_attributes":662,"./constants":647}],652:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var Color = require('../../components/color');
var basePlotLayoutAttributes = require('../layout_attributes');

var constants = require('./constants');
var layoutAttributes = require('./layout_attributes');
var handleAxisDefaults = require('./axis_defaults');
var handlePositionDefaults = require('./position_defaults');
var axisIds = require('./axis_ids');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    var layoutKeys = Object.keys(layoutIn),
        xaListCartesian = [],
        yaListCartesian = [],
        xaListGl2d = [],
        yaListGl2d = [],
        outerTicks = {},
        noGrids = {},
        i;

    // look for axes in the data
    for(i = 0; i < fullData.length; i++) {
        var trace = fullData[i];
        var listX, listY;

        if(Registry.traceIs(trace, 'cartesian')) {
            listX = xaListCartesian;
            listY = yaListCartesian;
        }
        else if(Registry.traceIs(trace, 'gl2d')) {
            listX = xaListGl2d;
            listY = yaListGl2d;
        }
        else continue;

        var xaName = axisIds.id2name(trace.xaxis),
            yaName = axisIds.id2name(trace.yaxis);

        // add axes implied by traces
        if(xaName && listX.indexOf(xaName) === -1) listX.push(xaName);
        if(yaName && listY.indexOf(yaName) === -1) listY.push(yaName);

        // check for default formatting tweaks
        if(Registry.traceIs(trace, '2dMap')) {
            outerTicks[xaName] = true;
            outerTicks[yaName] = true;
        }

        if(Registry.traceIs(trace, 'oriented')) {
            var positionAxis = trace.orientation === 'h' ? yaName : xaName;
            noGrids[positionAxis] = true;
        }
    }

    // N.B. Ignore orphan axes (i.e. axes that have no data attached to them)
    // if gl3d or geo is present on graph. This is retain backward compatible.
    //
    // TODO drop this in version 2.0
    var ignoreOrphan = (layoutOut._has('gl3d') || layoutOut._has('geo'));

    if(!ignoreOrphan) {
        for(i = 0; i < layoutKeys.length; i++) {
            var key = layoutKeys[i];

            // orphan layout axes are considered cartesian subplots

            if(xaListGl2d.indexOf(key) === -1 &&
                xaListCartesian.indexOf(key) === -1 &&
                    constants.xAxisMatch.test(key)) {
                xaListCartesian.push(key);
            }
            else if(yaListGl2d.indexOf(key) === -1 &&
                yaListCartesian.indexOf(key) === -1 &&
                    constants.yAxisMatch.test(key)) {
                yaListCartesian.push(key);
            }
        }
    }

    // make sure that plots with orphan cartesian axes
    // are considered 'cartesian'
    if(xaListCartesian.length && yaListCartesian.length) {
        Lib.pushUnique(layoutOut._basePlotModules, Registry.subplotsRegistry.cartesian);
    }

    function axSort(a, b) {
        var aNum = Number(a.substr(5) || 1),
            bNum = Number(b.substr(5) || 1);
        return aNum - bNum;
    }

    var xaList = xaListCartesian.concat(xaListGl2d).sort(axSort),
        yaList = yaListCartesian.concat(yaListGl2d).sort(axSort),
        axesList = xaList.concat(yaList);

    // plot_bgcolor only makes sense if there's a (2D) plot!
    // TODO: bgcolor for each subplot, to inherit from the main one
    var plot_bgcolor = Color.background;
    if(xaList.length && yaList.length) {
        plot_bgcolor = Lib.coerce(layoutIn, layoutOut, basePlotLayoutAttributes, 'plot_bgcolor');
    }

    var bgColor = Color.combine(plot_bgcolor, layoutOut.paper_bgcolor);

    axesList.forEach(function(axName) {
        var axLetter = axName.charAt(0),
            axLayoutIn = layoutIn[axName] || {},
            axLayoutOut = {},
            defaultOptions = {
                letter: axLetter,
                font: layoutOut.font,
                outerTicks: outerTicks[axName],
                showGrid: !noGrids[axName],
                name: axName,
                data: fullData,
                bgColor: bgColor,
                calendar: layoutOut.calendar
            },
            positioningOptions = {
                letter: axLetter,
                counterAxes: {x: yaList, y: xaList}[axLetter].map(axisIds.name2id),
                overlayableAxes: {x: xaList, y: yaList}[axLetter].filter(function(axName2) {
                    return axName2 !== axName && !(layoutIn[axName2] || {}).overlaying;
                }).map(axisIds.name2id)
            };

        function coerce(attr, dflt) {
            return Lib.coerce(axLayoutIn, axLayoutOut, layoutAttributes, attr, dflt);
        }

        handleAxisDefaults(axLayoutIn, axLayoutOut, coerce, defaultOptions, layoutOut);
        handlePositionDefaults(axLayoutIn, axLayoutOut, coerce, positioningOptions);

        layoutOut[axName] = axLayoutOut;

        // so we don't have to repeat autotype unnecessarily,
        // copy an autotype back to layoutIn
        if(!layoutIn[axName] && axLayoutIn.type !== '-') {
            layoutIn[axName] = {type: axLayoutIn.type};
        }

    });

    // quick second pass for range slider and selector defaults
    var rangeSliderDefaults = Registry.getComponentMethod('rangeslider', 'handleDefaults'),
        rangeSelectorDefaults = Registry.getComponentMethod('rangeselector', 'handleDefaults');

    axesList.forEach(function(axName) {
        var axLetter = axName.charAt(0),
            axLayoutIn = layoutIn[axName],
            axLayoutOut = layoutOut[axName],
            counterAxes = {x: yaList, y: xaList}[axLetter];

        rangeSliderDefaults(layoutIn, layoutOut, axName, counterAxes);

        if(axLetter === 'x' && axLayoutOut.type === 'date') {
            rangeSelectorDefaults(axLayoutIn, axLayoutOut, layoutOut, counterAxes,
                axLayoutOut.calendar);
        }
    });
};

},{"../../components/color":510,"../../lib":610,"../../registry":717,"../layout_attributes":693,"./axis_defaults":644,"./axis_ids":645,"./constants":647,"./layout_attributes":651,"./position_defaults":654}],653:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

// flattenUniqueSort :: String -> Function -> [[String]] -> [String]
function flattenUniqueSort(axisLetter, sortFunction, data) {

    // Bisection based insertion sort of distinct values for logarithmic time complexity.
    // Can't use a hashmap, which is O(1), because ES5 maps coerce keys to strings. If it ever becomes a bottleneck,
    // code can be separated: a hashmap (JS object) based version if all values encountered are strings; and
    // downgrading to this O(log(n)) array on the first encounter of a non-string value.

    var categoryArray = [];

    var traceLines = data.map(function(d) {return d[axisLetter];});

    var i, j, tracePoints, category, insertionIndex;

    var bisector = d3.bisector(sortFunction).left;

    for(i = 0; i < traceLines.length; i++) {

        tracePoints = traceLines[i];

        for(j = 0; j < tracePoints.length; j++) {

            category = tracePoints[j];

            // skip loop: ignore null and undefined categories
            if(category === null || category === undefined) continue;

            insertionIndex = bisector(categoryArray, category);

            // skip loop on already encountered values
            if(insertionIndex < categoryArray.length && categoryArray[insertionIndex] === category) continue;

            // insert value
            categoryArray.splice(insertionIndex, 0, category);
        }
    }

    return categoryArray;
}


/**
 * This pure function returns the ordered categories for specified axisLetter, categoryorder, categoryarray and data.
 *
 * If categoryorder is 'array', the result is a fresh copy of categoryarray, or if unspecified, an empty array.
 *
 * If categoryorder is 'category ascending' or 'category descending', the result is an array of ascending or descending
 * order of the unique categories encountered in the data for specified axisLetter.
 *
 * See cartesian/layout_attributes.js for the definition of categoryorder and categoryarray
 *
 */

// orderedCategories :: String -> String -> [String] -> [[String]] -> [String]
module.exports = function orderedCategories(axisLetter, categoryorder, categoryarray, data) {

    switch(categoryorder) {
        case 'array': return Array.isArray(categoryarray) ? categoryarray.slice() : [];
        case 'category ascending': return flattenUniqueSort(axisLetter, d3.ascending, data);
        case 'category descending': return flattenUniqueSort(axisLetter, d3.descending, data);
        case 'trace': return [];
        default: return [];
    }
};

},{"d3":86}],654:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');


module.exports = function handlePositionDefaults(containerIn, containerOut, coerce, options) {
    var counterAxes = options.counterAxes || [],
        overlayableAxes = options.overlayableAxes || [],
        letter = options.letter;

    var anchor = Lib.coerce(containerIn, containerOut, {
        anchor: {
            valType: 'enumerated',
            values: ['free'].concat(counterAxes),
            dflt: isNumeric(containerIn.position) ? 'free' :
                (counterAxes[0] || 'free')
        }
    }, 'anchor');

    if(anchor === 'free') coerce('position');

    Lib.coerce(containerIn, containerOut, {
        side: {
            valType: 'enumerated',
            values: letter === 'x' ? ['bottom', 'top'] : ['left', 'right'],
            dflt: letter === 'x' ? 'bottom' : 'left'
        }
    }, 'side');

    var overlaying = false;
    if(overlayableAxes.length) {
        overlaying = Lib.coerce(containerIn, containerOut, {
            overlaying: {
                valType: 'enumerated',
                values: [false].concat(overlayableAxes),
                dflt: false
            }
        }, 'overlaying');
    }

    if(!overlaying) {
        // TODO: right now I'm copying this domain over to overlaying axes
        // in ax.setscale()... but this means we still need (imperfect) logic
        // in the axes popover to hide domain for the overlaying axis.
        // perhaps I should make a private version _domain that all axes get???
        var domain = coerce('domain');
        if(domain[0] > domain[1] - 0.01) containerOut.domain = [0, 1];
        Lib.noneOrAll(containerIn.domain, containerOut.domain, [0, 1]);
    }

    return containerOut;
};

},{"../../lib":610,"fast-isnumeric":97}],655:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var polygon = require('../../lib/polygon');
var color = require('../../components/color');

var axes = require('./axes');
var constants = require('./constants');

var filteredPolygon = polygon.filter;
var polygonTester = polygon.tester;
var MINSELECT = constants.MINSELECT;

function getAxId(ax) { return ax._id; }

module.exports = function prepSelect(e, startX, startY, dragOptions, mode) {
    var plot = dragOptions.gd._fullLayout._zoomlayer,
        dragBBox = dragOptions.element.getBoundingClientRect(),
        xs = dragOptions.plotinfo.xaxis._offset,
        ys = dragOptions.plotinfo.yaxis._offset,
        x0 = startX - dragBBox.left,
        y0 = startY - dragBBox.top,
        x1 = x0,
        y1 = y0,
        path0 = 'M' + x0 + ',' + y0,
        pw = dragOptions.xaxes[0]._length,
        ph = dragOptions.yaxes[0]._length,
        xAxisIds = dragOptions.xaxes.map(getAxId),
        yAxisIds = dragOptions.yaxes.map(getAxId),
        allAxes = dragOptions.xaxes.concat(dragOptions.yaxes),
        pts;

    if(mode === 'lasso') {
        pts = filteredPolygon([[x0, y0]], constants.BENDPX);
    }

    var outlines = plot.selectAll('path.select-outline').data([1, 2]);

    outlines.enter()
        .append('path')
        .attr('class', function(d) { return 'select-outline select-outline-' + d; })
        .attr('transform', 'translate(' + xs + ', ' + ys + ')')
        .attr('d', path0 + 'Z');

    var corners = plot.append('path')
        .attr('class', 'zoombox-corners')
        .style({
            fill: color.background,
            stroke: color.defaultLine,
            'stroke-width': 1
        })
        .attr('transform', 'translate(' + xs + ', ' + ys + ')')
        .attr('d', 'M0,0Z');


    // find the traces to search for selection points
    var searchTraces = [],
        gd = dragOptions.gd,
        i,
        cd,
        trace,
        searchInfo,
        selection = [],
        eventData;
    for(i = 0; i < gd.calcdata.length; i++) {
        cd = gd.calcdata[i];
        trace = cd[0].trace;
        if(!trace._module || !trace._module.selectPoints) continue;

        if(dragOptions.subplot) {
            if(trace.subplot !== dragOptions.subplot) continue;

            searchTraces.push({
                selectPoints: trace._module.selectPoints,
                cd: cd,
                xaxis: dragOptions.xaxes[0],
                yaxis: dragOptions.yaxes[0]
            });
        }
        else {
            if(xAxisIds.indexOf(trace.xaxis) === -1) continue;
            if(yAxisIds.indexOf(trace.yaxis) === -1) continue;

            searchTraces.push({
                selectPoints: trace._module.selectPoints,
                cd: cd,
                xaxis: axes.getFromId(gd, trace.xaxis),
                yaxis: axes.getFromId(gd, trace.yaxis)
            });
        }
    }

    function axValue(ax) {
        var index = (ax._id.charAt(0) === 'y') ? 1 : 0;
        return function(v) { return ax.p2d(v[index]); };
    }

    function ascending(a, b) { return a - b; }

    dragOptions.moveFn = function(dx0, dy0) {
        var poly,
            ax;
        x1 = Math.max(0, Math.min(pw, dx0 + x0));
        y1 = Math.max(0, Math.min(ph, dy0 + y0));

        var dx = Math.abs(x1 - x0),
            dy = Math.abs(y1 - y0);

        if(mode === 'select') {
            if(dy < Math.min(dx * 0.6, MINSELECT)) {
                // horizontal motion: make a vertical box
                poly = polygonTester([[x0, 0], [x0, ph], [x1, ph], [x1, 0]]);
                // extras to guide users in keeping a straight selection
                corners.attr('d', 'M' + poly.xmin + ',' + (y0 - MINSELECT) +
                    'h-4v' + (2 * MINSELECT) + 'h4Z' +
                    'M' + (poly.xmax - 1) + ',' + (y0 - MINSELECT) +
                    'h4v' + (2 * MINSELECT) + 'h-4Z');

            }
            else if(dx < Math.min(dy * 0.6, MINSELECT)) {
                // vertical motion: make a horizontal box
                poly = polygonTester([[0, y0], [0, y1], [pw, y1], [pw, y0]]);
                corners.attr('d', 'M' + (x0 - MINSELECT) + ',' + poly.ymin +
                    'v-4h' + (2 * MINSELECT) + 'v4Z' +
                    'M' + (x0 - MINSELECT) + ',' + (poly.ymax - 1) +
                    'v4h' + (2 * MINSELECT) + 'v-4Z');
            }
            else {
                // diagonal motion
                poly = polygonTester([[x0, y0], [x0, y1], [x1, y1], [x1, y0]]);
                corners.attr('d', 'M0,0Z');
            }
            outlines.attr('d', 'M' + poly.xmin + ',' + poly.ymin +
                'H' + (poly.xmax - 1) + 'V' + (poly.ymax - 1) +
                'H' + poly.xmin + 'Z');
        }
        else if(mode === 'lasso') {
            pts.addPt([x1, y1]);
            poly = polygonTester(pts.filtered);
            outlines.attr('d', 'M' + pts.filtered.join('L') + 'Z');
        }

        selection = [];
        for(i = 0; i < searchTraces.length; i++) {
            searchInfo = searchTraces[i];
            [].push.apply(selection, searchInfo.selectPoints(searchInfo, poly));
        }

        eventData = {points: selection};

        if(mode === 'select') {
            var ranges = eventData.range = {},
                axLetter;

            for(i = 0; i < allAxes.length; i++) {
                ax = allAxes[i];
                axLetter = ax._id.charAt(0);
                ranges[ax._id] = [
                    ax.p2d(poly[axLetter + 'min']),
                    ax.p2d(poly[axLetter + 'max'])].sort(ascending);
            }
        }
        else {
            var dataPts = eventData.lassoPoints = {};

            for(i = 0; i < allAxes.length; i++) {
                ax = allAxes[i];
                dataPts[ax._id] = pts.filtered.map(axValue(ax));
            }
        }
        dragOptions.gd.emit('plotly_selecting', eventData);
    };

    dragOptions.doneFn = function(dragged, numclicks) {
        corners.remove();
        if(!dragged && numclicks === 2) {
            // clear selection on doubleclick
            outlines.remove();
            for(i = 0; i < searchTraces.length; i++) {
                searchInfo = searchTraces[i];
                searchInfo.selectPoints(searchInfo, false);
            }

            gd.emit('plotly_deselect', null);
        }
        else {
            dragOptions.gd.emit('plotly_selected', eventData);
        }
    };
};

},{"../../components/color":510,"../../lib/polygon":618,"./axes":642,"./constants":647}],656:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var cleanNumber = Lib.cleanNumber;
var ms2DateTime = Lib.ms2DateTime;
var dateTime2ms = Lib.dateTime2ms;

var numConstants = require('../../constants/numerical');
var FP_SAFE = numConstants.FP_SAFE;
var BADNUM = numConstants.BADNUM;

var constants = require('./constants');
var axisIds = require('./axis_ids');

function fromLog(v) {
    return Math.pow(10, v);
}

function num(v) {
    if(!isNumeric(v)) return BADNUM;
    v = Number(v);
    if(v < -FP_SAFE || v > FP_SAFE) return BADNUM;
    return isNumeric(v) ? Number(v) : BADNUM;
}

/**
 * Define the conversion functions for an axis data is used in 5 ways:
 *
 *  d: data, in whatever form it's provided
 *  c: calcdata: turned into numbers, but not linearized
 *  l: linearized - same as c except for log axes (and other nonlinear
 *      mappings later?) this is used when we need to know if it's
 *      *possible* to show some data on this axis, without caring about
 *      the current range
 *  p: pixel value - mapped to the screen with current size and zoom
 *  r: ranges, tick0, and annotation positions match one of the above
 *     but are handled differently for different types:
 *     - linear and date: data format (d)
 *     - category: calcdata format (c), and will stay that way because
 *       the data format has no continuous mapping
 *     - log: linearized (l) format
 *       TODO: in v2.0 we plan to change it to data format. At that point
 *       shapes will work the same way as ranges, tick0, and annotations
 *       so they can use this conversion too.
 *
 * Creates/updates these conversion functions, and a few more utilities
 * like cleanRange, and makeCalcdata
 *
 * also clears the autorange bounds ._min and ._max
 * and the autotick constraints ._minDtick, ._forceTick0
 */
module.exports = function setConvert(ax) {

    // clipMult: how many axis lengths past the edge do we render?
    // for panning, 1-2 would suffice, but for zooming more is nice.
    // also, clipping can affect the direction of lines off the edge...
    var clipMult = 10;

    function toLog(v, clip) {
        if(v > 0) return Math.log(v) / Math.LN10;

        else if(v <= 0 && clip && ax.range && ax.range.length === 2) {
            // clip NaN (ie past negative infinity) to clipMult axis
            // length past the negative edge
            var r0 = ax.range[0],
                r1 = ax.range[1];
            return 0.5 * (r0 + r1 - 3 * clipMult * Math.abs(r0 - r1));
        }

        else return BADNUM;
    }

    /*
     * wrapped dateTime2ms that:
     * - accepts ms numbers for backward compatibility
     * - inserts a dummy arg so calendar is the 3rd arg (see notes below).
     * - defaults to ax.calendar
     */
    function dt2ms(v, _, calendar) {
        // NOTE: Changed this behavior: previously we took any numeric value
        // to be a ms, even if it was a string that could be a bare year.
        // Now we convert it as a date if at all possible, and only try
        // as (local) ms if that fails.
        var ms = dateTime2ms(v, calendar || ax.calendar);
        if(ms === BADNUM) {
            if(isNumeric(v)) ms = dateTime2ms(new Date(+v));
            else return BADNUM;
        }
        return ms;
    }

    // wrapped ms2DateTime to insert default ax.calendar
    function ms2dt(v, r, calendar) {
        return ms2DateTime(v, r, calendar || ax.calendar);
    }

    function getCategoryName(v) {
        return ax._categories[Math.round(v)];
    }

    /*
     * setCategoryIndex: return the index of category v,
     * inserting it in the list if it's not already there
     *
     * this will enter the categories in the order it
     * encounters them, ie all the categories from the
     * first data set, then all the ones from the second
     * that aren't in the first etc.
     *
     * it is assumed that this function is being invoked in the
     * already sorted category order; otherwise there would be
     * a disconnect between the array and the index returned
     */
    function setCategoryIndex(v) {
        if(v !== null && v !== undefined) {
            var c = ax._categories.indexOf(v);
            if(c === -1) {
                ax._categories.push(v);
                return ax._categories.length - 1;
            }
            return c;
        }
        return BADNUM;
    }

    function getCategoryIndex(v) {
        // d2l/d2c variant that that won't add categories but will also
        // allow numbers to be mapped to the linearized axis positions
        var index = ax._categories.indexOf(v);
        if(index !== -1) return index;
        if(typeof v === 'number') return v;
    }

    function l2p(v) {
        if(!isNumeric(v)) return BADNUM;

        // include 2 fractional digits on pixel, for PDF zooming etc
        return d3.round(ax._b + ax._m * v, 2);
    }

    function p2l(px) { return (px - ax._b) / ax._m; }

    // conversions among c/l/p are fairly simple - do them together for all axis types
    ax.c2l = (ax.type === 'log') ? toLog : num;
    ax.l2c = (ax.type === 'log') ? fromLog : num;

    ax.l2p = l2p;
    ax.p2l = p2l;

    ax.c2p = (ax.type === 'log') ? function(v, clip) { return l2p(toLog(v, clip)); } : l2p;
    ax.p2c = (ax.type === 'log') ? function(px) { return fromLog(p2l(px)); } : p2l;

    /*
     * now type-specific conversions for **ALL** other combinations
     * they're all written out, instead of being combinations of each other, for
     * both clarity and speed.
     */
    if(['linear', '-'].indexOf(ax.type) !== -1) {
        // all are data vals, but d and r need cleaning
        ax.d2r = ax.r2d = ax.d2c = ax.r2c = ax.d2l = ax.r2l = cleanNumber;
        ax.c2d = ax.c2r = ax.l2d = ax.l2r = num;

        ax.d2p = ax.r2p = function(v) { return l2p(cleanNumber(v)); };
        ax.p2d = ax.p2r = p2l;
    }
    else if(ax.type === 'log') {
        // d and c are data vals, r and l are logged (but d and r need cleaning)
        ax.d2r = ax.d2l = function(v, clip) { return toLog(cleanNumber(v), clip); };
        ax.r2d = ax.r2c = function(v) { return fromLog(cleanNumber(v)); };

        ax.d2c = ax.r2l = cleanNumber;
        ax.c2d = ax.l2r = num;

        ax.c2r = toLog;
        ax.l2d = fromLog;

        ax.d2p = function(v, clip) { return l2p(ax.d2r(v, clip)); };
        ax.p2d = function(px) { return fromLog(p2l(px)); };

        ax.r2p = function(v) { return l2p(cleanNumber(v)); };
        ax.p2r = p2l;
    }
    else if(ax.type === 'date') {
        // r and d are date strings, l and c are ms

        /*
         * Any of these functions with r and d on either side, calendar is the
         * **3rd** argument. log has reserved the second argument.
         *
         * Unless you need the special behavior of the second arg (ms2DateTime
         * uses this to limit precision, toLog uses true to clip negatives
         * to offscreen low rather than undefined), it's safe to pass 0.
         */
        ax.d2r = ax.r2d = Lib.identity;

        ax.d2c = ax.r2c = ax.d2l = ax.r2l = dt2ms;
        ax.c2d = ax.c2r = ax.l2d = ax.l2r = ms2dt;

        ax.d2p = ax.r2p = function(v, _, calendar) { return l2p(dt2ms(v, 0, calendar)); };
        ax.p2d = ax.p2r = function(px, r, calendar) { return ms2dt(p2l(px), r, calendar); };
    }
    else if(ax.type === 'category') {
        // d is categories; r, c, and l are indices
        // TODO: should r accept category names too?
        // ie r2c and r2l would be getCategoryIndex (and r2p would change)

        ax.d2r = ax.d2c = ax.d2l = setCategoryIndex;
        ax.r2d = ax.c2d = ax.l2d = getCategoryName;

        // special d2l variant that won't add categories
        ax.d2l_noadd = getCategoryIndex;

        ax.r2l = ax.l2r = ax.r2c = ax.c2r = num;

        ax.d2p = function(v) { return l2p(getCategoryIndex(v)); };
        ax.p2d = function(px) { return getCategoryName(p2l(px)); };
        ax.r2p = l2p;
        ax.p2r = p2l;
    }

    // find the range value at the specified (linear) fraction of the axis
    ax.fraction2r = function(v) {
        var rl0 = ax.r2l(ax.range[0]),
            rl1 = ax.r2l(ax.range[1]);
        return ax.l2r(rl0 + v * (rl1 - rl0));
    };

    // find the fraction of the range at the specified range value
    ax.r2fraction = function(v) {
        var rl0 = ax.r2l(ax.range[0]),
            rl1 = ax.r2l(ax.range[1]);
        return (ax.r2l(v) - rl0) / (rl1 - rl0);
    };

    /*
     * cleanRange: make sure range is a couplet of valid & distinct values
     * keep numbers away from the limits of floating point numbers,
     * and dates away from the ends of our date system (+/- 9999 years)
     *
     * optional param rangeAttr: operate on a different attribute, like
     * ax._r, rather than ax.range
     */
    ax.cleanRange = function(rangeAttr) {
        if(!rangeAttr) rangeAttr = 'range';
        var range = ax[rangeAttr],
            axLetter = (ax._id || 'x').charAt(0),
            i, dflt;

        if(ax.type === 'date') dflt = Lib.dfltRange(ax.calendar);
        else if(axLetter === 'y') dflt = constants.DFLTRANGEY;
        else dflt = constants.DFLTRANGEX;

        // make sure we don't later mutate the defaults
        dflt = dflt.slice();

        if(!range || range.length !== 2) {
            ax[rangeAttr] = dflt;
            return;
        }

        if(ax.type === 'date') {
            // check if milliseconds or js date objects are provided for range
            // and convert to date strings
            range[0] = Lib.cleanDate(range[0], BADNUM, ax.calendar);
            range[1] = Lib.cleanDate(range[1], BADNUM, ax.calendar);
        }

        for(i = 0; i < 2; i++) {
            if(ax.type === 'date') {
                if(!Lib.isDateTime(range[i], ax.calendar)) {
                    ax[rangeAttr] = dflt;
                    break;
                }

                if(ax.r2l(range[0]) === ax.r2l(range[1])) {
                    // split by +/- 1 second
                    var linCenter = Lib.constrain(ax.r2l(range[0]),
                        Lib.MIN_MS + 1000, Lib.MAX_MS - 1000);
                    range[0] = ax.l2r(linCenter - 1000);
                    range[1] = ax.l2r(linCenter + 1000);
                    break;
                }
            }
            else {
                if(!isNumeric(range[i])) {
                    if(isNumeric(range[1 - i])) {
                        range[i] = range[1 - i] * (i ? 10 : 0.1);
                    }
                    else {
                        ax[rangeAttr] = dflt;
                        break;
                    }
                }

                if(range[i] < -FP_SAFE) range[i] = -FP_SAFE;
                else if(range[i] > FP_SAFE) range[i] = FP_SAFE;

                if(range[0] === range[1]) {
                    // somewhat arbitrary: split by 1 or 1ppm, whichever is bigger
                    var inc = Math.max(1, Math.abs(range[0] * 1e-6));
                    range[0] -= inc;
                    range[1] += inc;
                }
            }
        }
    };

    // set scaling to pixels
    ax.setScale = function(usePrivateRange) {
        var gs = ax._gd._fullLayout._size,
            axLetter = ax._id.charAt(0);

        // TODO cleaner way to handle this case
        if(!ax._categories) ax._categories = [];

        // make sure we have a domain (pull it in from the axis
        // this one is overlaying if necessary)
        if(ax.overlaying) {
            var ax2 = axisIds.getFromId(ax._gd, ax.overlaying);
            ax.domain = ax2.domain;
        }

        // While transitions are occuring, occurring, we get a double-transform
        // issue if we transform the drawn layer *and* use the new axis range to
        // draw the data. This allows us to construct setConvert using the pre-
        // interaction values of the range:
        var rangeAttr = (usePrivateRange && ax._r) ? '_r' : 'range',
            calendar = ax.calendar;
        ax.cleanRange(rangeAttr);

        var rl0 = ax.r2l(ax[rangeAttr][0], calendar),
            rl1 = ax.r2l(ax[rangeAttr][1], calendar);

        if(axLetter === 'y') {
            ax._offset = gs.t + (1 - ax.domain[1]) * gs.h;
            ax._length = gs.h * (ax.domain[1] - ax.domain[0]);
            ax._m = ax._length / (rl0 - rl1);
            ax._b = -ax._m * rl1;
        }
        else {
            ax._offset = gs.l + ax.domain[0] * gs.w;
            ax._length = gs.w * (ax.domain[1] - ax.domain[0]);
            ax._m = ax._length / (rl1 - rl0);
            ax._b = -ax._m * rl0;
        }

        if(!isFinite(ax._m) || !isFinite(ax._b)) {
            Lib.notifier(
                'Something went wrong with axis scaling',
                'long');
            ax._gd._replotting = false;
            throw new Error('axis scaling');
        }
    };

    // makeCalcdata: takes an x or y array and converts it
    // to a position on the axis object "ax"
    // inputs:
    //      trace - a data object from gd.data
    //      axLetter - a string, either 'x' or 'y', for which item
    //          to convert (TODO: is this now always the same as
    //          the first letter of ax._id?)
    // in case the expected data isn't there, make a list of
    // integers based on the opposite data
    ax.makeCalcdata = function(trace, axLetter) {
        var arrayIn, arrayOut, i;

        var cal = ax.type === 'date' && trace[axLetter + 'calendar'];

        if(axLetter in trace) {
            arrayIn = trace[axLetter];
            arrayOut = new Array(arrayIn.length);

            for(i = 0; i < arrayIn.length; i++) {
                arrayOut[i] = ax.d2c(arrayIn[i], 0, cal);
            }
        }
        else {
            var v0 = ((axLetter + '0') in trace) ?
                    ax.d2c(trace[axLetter + '0'], 0, cal) : 0,
                dv = (trace['d' + axLetter]) ?
                    Number(trace['d' + axLetter]) : 1;

            // the opposing data, for size if we have x and dx etc
            arrayIn = trace[{x: 'y', y: 'x'}[axLetter]];
            arrayOut = new Array(arrayIn.length);

            for(i = 0; i < arrayIn.length; i++) arrayOut[i] = v0 + i * dv;
        }
        return arrayOut;
    };

    // for autoranging: arrays of objects:
    //      {val: axis value, pad: pixel padding}
    // on the low and high sides
    ax._min = [];
    ax._max = [];

    // and for bar charts and box plots: reset forced minimum tick spacing
    delete ax._minDtick;
    delete ax._forceTick0;
};

},{"../../constants/numerical":593,"../../lib":610,"./axis_ids":645,"./constants":647,"d3":86,"fast-isnumeric":97}],657:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


/**
 * options: inherits font, outerTicks, noHover from axes.handleAxisDefaults
 */
module.exports = function handleTickLabelDefaults(containerIn, containerOut, coerce, axType, options) {
    var showAttrDflt = getShowAttrDflt(containerIn);

    var tickPrefix = coerce('tickprefix');
    if(tickPrefix) coerce('showtickprefix', showAttrDflt);

    var tickSuffix = coerce('ticksuffix');
    if(tickSuffix) coerce('showticksuffix', showAttrDflt);

    var showTickLabels = coerce('showticklabels');
    if(showTickLabels) {
        var font = options.font || {};
        // as with titlefont.color, inherit axis.color only if one was
        // explicitly provided
        var dfltFontColor = (containerOut.color === containerIn.color) ?
            containerOut.color : font.color;
        Lib.coerceFont(coerce, 'tickfont', {
            family: font.family,
            size: font.size,
            color: dfltFontColor
        });
        coerce('tickangle');

        if(axType !== 'category') {
            var tickFormat = coerce('tickformat');
            if(!tickFormat && axType !== 'date') {
                coerce('showexponent', showAttrDflt);
                coerce('exponentformat');
                coerce('separatethousands');
            }
        }
    }

    if(axType !== 'category' && !options.noHover) coerce('hoverformat');
};

/*
 * Attributes 'showexponent', 'showtickprefix' and 'showticksuffix'
 * share values.
 *
 * If only 1 attribute is set,
 * the remaining attributes inherit that value.
 *
 * If 2 attributes are set to the same value,
 * the remaining attribute inherits that value.
 *
 * If 2 attributes are set to different values,
 * the remaining is set to its dflt value.
 *
 */
function getShowAttrDflt(containerIn) {
    var showAttrsAll = ['showexponent',
            'showtickprefix',
            'showticksuffix'],
        showAttrs = showAttrsAll.filter(function(a) {
            return containerIn[a] !== undefined;
        }),
        sameVal = function(a) {
            return containerIn[a] === containerIn[showAttrs[0]];
        };

    if(showAttrs.every(sameVal) || showAttrs.length === 1) {
        return containerIn[showAttrs[0]];
    }
}

},{"../../lib":610}],658:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var layoutAttributes = require('./layout_attributes');


/**
 * options: inherits outerTicks from axes.handleAxisDefaults
 */
module.exports = function handleTickDefaults(containerIn, containerOut, coerce, options) {
    var tickLen = Lib.coerce2(containerIn, containerOut, layoutAttributes, 'ticklen'),
        tickWidth = Lib.coerce2(containerIn, containerOut, layoutAttributes, 'tickwidth'),
        tickColor = Lib.coerce2(containerIn, containerOut, layoutAttributes, 'tickcolor', containerOut.color),
        showTicks = coerce('ticks', (options.outerTicks || tickLen || tickWidth || tickColor) ? 'outside' : '');

    if(!showTicks) {
        delete containerOut.ticklen;
        delete containerOut.tickwidth;
        delete containerOut.tickcolor;
    }
};

},{"../../lib":610,"./layout_attributes":651}],659:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');
var Lib = require('../../lib');
var ONEDAY = require('../../constants/numerical').ONEDAY;


module.exports = function handleTickValueDefaults(containerIn, containerOut, coerce, axType) {
    var tickmodeDefault = 'auto';

    if(containerIn.tickmode === 'array' &&
            (axType === 'log' || axType === 'date')) {
        containerIn.tickmode = 'auto';
    }

    if(Array.isArray(containerIn.tickvals)) tickmodeDefault = 'array';
    else if(containerIn.dtick) {
        tickmodeDefault = 'linear';
    }
    var tickmode = coerce('tickmode', tickmodeDefault);

    if(tickmode === 'auto') coerce('nticks');
    else if(tickmode === 'linear') {
        // dtick is usually a positive number, but there are some
        // special strings available for log or date axes
        // default is 1 day for dates, otherwise 1
        var dtickDflt = (axType === 'date') ? ONEDAY : 1;
        var dtick = coerce('dtick', dtickDflt);
        if(isNumeric(dtick)) {
            containerOut.dtick = (dtick > 0) ? Number(dtick) : dtickDflt;
        }
        else if(typeof dtick !== 'string') {
            containerOut.dtick = dtickDflt;
        }
        else {
            // date and log special cases are all one character plus a number
            var prefix = dtick.charAt(0),
                dtickNum = dtick.substr(1);

            dtickNum = isNumeric(dtickNum) ? Number(dtickNum) : 0;
            if((dtickNum <= 0) || !(
                    // "M<n>" gives ticks every (integer) n months
                    (axType === 'date' && prefix === 'M' && dtickNum === Math.round(dtickNum)) ||
                    // "L<f>" gives ticks linearly spaced in data (not in position) every (float) f
                    (axType === 'log' && prefix === 'L') ||
                    // "D1" gives powers of 10 with all small digits between, "D2" gives only 2 and 5
                    (axType === 'log' && prefix === 'D' && (dtickNum === 1 || dtickNum === 2))
                )) {
                containerOut.dtick = dtickDflt;
            }
        }

        // tick0 can have different valType for different axis types, so
        // validate that now. Also for dates, change milliseconds to date strings
        var tick0Dflt = (axType === 'date') ? Lib.dateTick0(containerOut.calendar) : 0;
        var tick0 = coerce('tick0', tick0Dflt);
        if(axType === 'date') {
            containerOut.tick0 = Lib.cleanDate(tick0, tick0Dflt);
        }
        // Aside from date axes, dtick must be numeric; D1 and D2 modes ignore tick0 entirely
        else if(isNumeric(tick0) && dtick !== 'D1' && dtick !== 'D2') {
            containerOut.tick0 = Number(tick0);
        }
        else {
            containerOut.tick0 = tick0Dflt;
        }
    }
    else {
        var tickvals = coerce('tickvals');
        if(tickvals === undefined) containerOut.tickmode = 'auto';
        else coerce('ticktext');
    }
};

},{"../../constants/numerical":593,"../../lib":610,"fast-isnumeric":97}],660:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Plotly = require('../../plotly');
var Registry = require('../../registry');
var Lib = require('../../lib');
var Axes = require('./axes');
var axisRegex = /((x|y)([2-9]|[1-9][0-9]+)?)axis$/;

module.exports = function transitionAxes(gd, newLayout, transitionOpts, makeOnCompleteCallback) {
    var fullLayout = gd._fullLayout;
    var axes = [];

    function computeUpdates(layout) {
        var ai, attrList, match, axis, update;
        var updates = {};

        for(ai in layout) {
            attrList = ai.split('.');
            match = attrList[0].match(axisRegex);
            if(match) {
                var axisLetter = match[1];
                var axisName = axisLetter + 'axis';
                axis = fullLayout[axisName];
                update = {};

                if(Array.isArray(layout[ai])) {
                    update.to = layout[ai].slice(0);
                } else {
                    if(Array.isArray(layout[ai].range)) {
                        update.to = layout[ai].range.slice(0);
                    }
                }
                if(!update.to) continue;

                update.axisName = axisName;
                update.length = axis._length;

                axes.push(axisLetter);

                updates[axisLetter] = update;
            }
        }

        return updates;
    }

    function computeAffectedSubplots(fullLayout, updatedAxisIds, updates) {
        var plotName;
        var plotinfos = fullLayout._plots;
        var affectedSubplots = [];
        var toX, toY;

        for(plotName in plotinfos) {
            var plotinfo = plotinfos[plotName];

            if(affectedSubplots.indexOf(plotinfo) !== -1) continue;

            var x = plotinfo.xaxis._id;
            var y = plotinfo.yaxis._id;
            var fromX = plotinfo.xaxis.range;
            var fromY = plotinfo.yaxis.range;

            // Store the initial range at the beginning of this transition:
            plotinfo.xaxis._r = plotinfo.xaxis.range.slice();
            plotinfo.yaxis._r = plotinfo.yaxis.range.slice();

            if(updates[x]) {
                toX = updates[x].to;
            } else {
                toX = fromX;
            }
            if(updates[y]) {
                toY = updates[y].to;
            } else {
                toY = fromY;
            }

            if(fromX[0] === toX[0] && fromX[1] === toX[1] && fromY[0] === toY[0] && fromY[1] === toY[1]) continue;

            if(updatedAxisIds.indexOf(x) !== -1 || updatedAxisIds.indexOf(y) !== -1) {
                affectedSubplots.push(plotinfo);
            }
        }

        return affectedSubplots;
    }

    var updates = computeUpdates(newLayout);
    var updatedAxisIds = Object.keys(updates);
    var affectedSubplots = computeAffectedSubplots(fullLayout, updatedAxisIds, updates);

    if(!affectedSubplots.length) {
        return false;
    }

    function ticksAndAnnotations(xa, ya) {
        var activeAxIds = [],
            i;

        activeAxIds = [xa._id, ya._id];

        for(i = 0; i < activeAxIds.length; i++) {
            Axes.doTicks(gd, activeAxIds[i], true);
        }

        function redrawObjs(objArray, method) {
            for(i = 0; i < objArray.length; i++) {
                var obji = objArray[i];

                if((activeAxIds.indexOf(obji.xref) !== -1) ||
                    (activeAxIds.indexOf(obji.yref) !== -1)) {
                    method(gd, i);
                }
            }
        }

        // annotations and shapes 'draw' method is slow,
        // use the finer-grained 'drawOne' method instead

        redrawObjs(fullLayout.annotations || [], Registry.getComponentMethod('annotations', 'drawOne'));
        redrawObjs(fullLayout.shapes || [], Registry.getComponentMethod('shapes', 'drawOne'));
        redrawObjs(fullLayout.images || [], Registry.getComponentMethod('images', 'draw'));
    }

    function unsetSubplotTransform(subplot) {
        var xa2 = subplot.xaxis;
        var ya2 = subplot.yaxis;

        fullLayout._defs.selectAll('#' + subplot.clipId)
            .call(Lib.setTranslate, 0, 0)
            .call(Lib.setScale, 1, 1);

        subplot.plot
            .call(Lib.setTranslate, xa2._offset, ya2._offset)
            .call(Lib.setScale, 1, 1)

            // This is specifically directed at scatter traces, applying an inverse
            // scale to individual points to counteract the scale of the trace
            // as a whole:
            .selectAll('.points').selectAll('.point')
                .call(Lib.setPointGroupScale, 1, 1);

    }

    function updateSubplot(subplot, progress) {
        var axis, r0, r1;
        var xUpdate = updates[subplot.xaxis._id];
        var yUpdate = updates[subplot.yaxis._id];

        var viewBox = [];

        if(xUpdate) {
            axis = gd._fullLayout[xUpdate.axisName];
            r0 = axis._r;
            r1 = xUpdate.to;
            viewBox[0] = (r0[0] * (1 - progress) + progress * r1[0] - r0[0]) / (r0[1] - r0[0]) * subplot.xaxis._length;
            var dx1 = r0[1] - r0[0];
            var dx2 = r1[1] - r1[0];

            axis.range[0] = r0[0] * (1 - progress) + progress * r1[0];
            axis.range[1] = r0[1] * (1 - progress) + progress * r1[1];

            viewBox[2] = subplot.xaxis._length * ((1 - progress) + progress * dx2 / dx1);
        } else {
            viewBox[0] = 0;
            viewBox[2] = subplot.xaxis._length;
        }

        if(yUpdate) {
            axis = gd._fullLayout[yUpdate.axisName];
            r0 = axis._r;
            r1 = yUpdate.to;
            viewBox[1] = (r0[1] * (1 - progress) + progress * r1[1] - r0[1]) / (r0[0] - r0[1]) * subplot.yaxis._length;
            var dy1 = r0[1] - r0[0];
            var dy2 = r1[1] - r1[0];

            axis.range[0] = r0[0] * (1 - progress) + progress * r1[0];
            axis.range[1] = r0[1] * (1 - progress) + progress * r1[1];

            viewBox[3] = subplot.yaxis._length * ((1 - progress) + progress * dy2 / dy1);
        } else {
            viewBox[1] = 0;
            viewBox[3] = subplot.yaxis._length;
        }

        ticksAndAnnotations(subplot.xaxis, subplot.yaxis);


        var xa2 = subplot.xaxis;
        var ya2 = subplot.yaxis;

        var editX = !!xUpdate;
        var editY = !!yUpdate;

        var xScaleFactor = editX ? xa2._length / viewBox[2] : 1,
            yScaleFactor = editY ? ya2._length / viewBox[3] : 1;

        var clipDx = editX ? viewBox[0] : 0,
            clipDy = editY ? viewBox[1] : 0;

        var fracDx = editX ? (viewBox[0] / viewBox[2] * xa2._length) : 0,
            fracDy = editY ? (viewBox[1] / viewBox[3] * ya2._length) : 0;

        var plotDx = xa2._offset - fracDx,
            plotDy = ya2._offset - fracDy;

        fullLayout._defs.selectAll('#' + subplot.clipId)
            .call(Lib.setTranslate, clipDx, clipDy)
            .call(Lib.setScale, 1 / xScaleFactor, 1 / yScaleFactor);

        subplot.plot
            .call(Lib.setTranslate, plotDx, plotDy)
            .call(Lib.setScale, xScaleFactor, yScaleFactor)

            // This is specifically directed at scatter traces, applying an inverse
            // scale to individual points to counteract the scale of the trace
            // as a whole:
            .selectAll('.points').selectAll('.point')
                .call(Lib.setPointGroupScale, 1 / xScaleFactor, 1 / yScaleFactor);

    }

    var onComplete;
    if(makeOnCompleteCallback) {
        // This module makes the choice whether or not it notifies Plotly.transition
        // about completion:
        onComplete = makeOnCompleteCallback();
    }

    function transitionComplete() {
        var aobj = {};
        for(var i = 0; i < updatedAxisIds.length; i++) {
            var axi = gd._fullLayout[updates[updatedAxisIds[i]].axisName];
            var to = updates[updatedAxisIds[i]].to;
            aobj[axi._name + '.range[0]'] = to[0];
            aobj[axi._name + '.range[1]'] = to[1];

            axi.range = to.slice();
        }

        // Signal that this transition has completed:
        onComplete && onComplete();

        return Plotly.relayout(gd, aobj).then(function() {
            for(var i = 0; i < affectedSubplots.length; i++) {
                unsetSubplotTransform(affectedSubplots[i]);
            }
        });
    }

    function transitionInterrupt() {
        var aobj = {};
        for(var i = 0; i < updatedAxisIds.length; i++) {
            var axi = gd._fullLayout[updatedAxisIds[i] + 'axis'];
            aobj[axi._name + '.range[0]'] = axi.range[0];
            aobj[axi._name + '.range[1]'] = axi.range[1];

            axi.range = axi._r.slice();
        }

        return Plotly.relayout(gd, aobj).then(function() {
            for(var i = 0; i < affectedSubplots.length; i++) {
                unsetSubplotTransform(affectedSubplots[i]);
            }
        });
    }

    var t1, t2, raf;
    var easeFn = d3.ease(transitionOpts.easing);

    gd._transitionData._interruptCallbacks.push(function() {
        window.cancelAnimationFrame(raf);
        raf = null;
        return transitionInterrupt();
    });

    function doFrame() {
        t2 = Date.now();

        var tInterp = Math.min(1, (t2 - t1) / transitionOpts.duration);
        var progress = easeFn(tInterp);

        for(var i = 0; i < affectedSubplots.length; i++) {
            updateSubplot(affectedSubplots[i], progress);
        }

        if(t2 - t1 > transitionOpts.duration) {
            transitionComplete();
            raf = window.cancelAnimationFrame(doFrame);
        } else {
            raf = window.requestAnimationFrame(doFrame);
        }
    }

    t1 = Date.now();
    raf = window.requestAnimationFrame(doFrame);

    return Promise.resolve();
};

},{"../../lib":610,"../../plotly":637,"../../registry":717,"./axes":642,"d3":86}],661:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plotly = require('../plotly');
var Lib = require('../lib');

/*
 * Create or update an observer. This function is designed to be
 * idempotent so that it can be called over and over as the component
 * updates, and will attach and detach listeners as needed.
 *
 * @param {optional object} container
 *      An object on which the observer is stored. This is the mechanism
 *      by which it is idempotent. If it already exists, another won't be
 *      added. Each time it's called, the value lookup table is updated.
 * @param {array} commandList
 *      An array of commands, following either `buttons` of `updatemenus`
 *      or `steps` of `sliders`.
 * @param {function} onchange
 *      A listener called when the value is changed. Receives data object
 *      with information about the new state.
 */
exports.manageCommandObserver = function(gd, container, commandList, onchange) {
    var ret = {};
    var enabled = true;

    if(container && container._commandObserver) {
        ret = container._commandObserver;
    }

    if(!ret.cache) {
        ret.cache = {};
    }

    // Either create or just recompute this:
    ret.lookupTable = {};

    var binding = exports.hasSimpleAPICommandBindings(gd, commandList, ret.lookupTable);

    if(container && container._commandObserver) {
        if(!binding) {
            // If container exists and there are no longer any bindings,
            // remove existing:
            if(container._commandObserver.remove) {
                container._commandObserver.remove();
                container._commandObserver = null;
                return ret;
            }
        } else {
            // If container exists and there *are* bindings, then the lookup
            // table should have been updated and check is already attached,
            // so there's nothing to be done:
            return ret;


        }
    }

    // Determine whether there's anything to do for this binding:

    if(binding) {
        // Build the cache:
        bindingValueHasChanged(gd, binding, ret.cache);

        ret.check = function check() {
            if(!enabled) return;

            var update = bindingValueHasChanged(gd, binding, ret.cache);

            if(update.changed && onchange) {
                // Disable checks for the duration of this command in order to avoid
                // infinite loops:
                if(ret.lookupTable[update.value] !== undefined) {
                    ret.disable();
                    Promise.resolve(onchange({
                        value: update.value,
                        type: binding.type,
                        prop: binding.prop,
                        traces: binding.traces,
                        index: ret.lookupTable[update.value]
                    })).then(ret.enable, ret.enable);
                }
            }

            return update.changed;
        };

        var checkEvents = [
            'plotly_relayout',
            'plotly_redraw',
            'plotly_restyle',
            'plotly_update',
            'plotly_animatingframe',
            'plotly_afterplot'
        ];

        for(var i = 0; i < checkEvents.length; i++) {
            gd._internalOn(checkEvents[i], ret.check);
        }

        ret.remove = function() {
            for(var i = 0; i < checkEvents.length; i++) {
                gd._removeInternalListener(checkEvents[i], ret.check);
            }
        };
    } else {
        // TODO: It'd be really neat to actually give a *reason* for this, but at least a warning
        // is a start
        Lib.warn('Unable to automatically bind plot updates to API command');

        ret.lookupTable = {};
        ret.remove = function() {};
    }

    ret.disable = function disable() {
        enabled = false;
    };

    ret.enable = function enable() {
        enabled = true;
    };

    if(container) {
        container._commandObserver = ret;
    }

    return ret;
};

/*
 * This function checks to see if an array of objects containing
 * method and args properties is compatible with automatic two-way
 * binding. The criteria right now are that
 *
 *   1. multiple traces may be affected
 *   2. only one property may be affected
 *   3. the same property must be affected by all commands
 */
exports.hasSimpleAPICommandBindings = function(gd, commandList, bindingsByValue) {
    var i;
    var n = commandList.length;

    var refBinding;

    for(i = 0; i < n; i++) {
        var binding;
        var command = commandList[i];
        var method = command.method;
        var args = command.args;

        // If any command has no method, refuse to bind:
        if(!method) {
            return false;
        }
        var bindings = exports.computeAPICommandBindings(gd, method, args);

        // Right now, handle one and *only* one property being set:
        if(bindings.length !== 1) {
            return false;
        }

        if(!refBinding) {
            refBinding = bindings[0];
            if(Array.isArray(refBinding.traces)) {
                refBinding.traces.sort();
            }
        } else {
            binding = bindings[0];
            if(binding.type !== refBinding.type) {
                return false;
            }
            if(binding.prop !== refBinding.prop) {
                return false;
            }
            if(Array.isArray(refBinding.traces)) {
                if(Array.isArray(binding.traces)) {
                    binding.traces.sort();
                    for(var j = 0; j < refBinding.traces.length; j++) {
                        if(refBinding.traces[j] !== binding.traces[j]) {
                            return false;
                        }
                    }
                } else {
                    return false;
                }
            } else {
                if(binding.prop !== refBinding.prop) {
                    return false;
                }
            }
        }

        binding = bindings[0];
        var value = binding.value;
        if(Array.isArray(value)) {
            if(value.length === 1) {
                value = value[0];
            } else {
                return false;
            }
        }
        if(bindingsByValue) {
            bindingsByValue[value] = i;
        }
    }

    return refBinding;
};

function bindingValueHasChanged(gd, binding, cache) {
    var container, value, obj;
    var changed = false;

    if(binding.type === 'data') {
        // If it's data, we need to get a trace. Based on the limited scope
        // of what we cover, we can just take the first trace from the list,
        // or otherwise just the first trace:
        container = gd._fullData[binding.traces !== null ? binding.traces[0] : 0];
    } else if(binding.type === 'layout') {
        container = gd._fullLayout;
    } else {
        return false;
    }

    value = Lib.nestedProperty(container, binding.prop).get();

    obj = cache[binding.type] = cache[binding.type] || {};

    if(obj.hasOwnProperty(binding.prop)) {
        if(obj[binding.prop] !== value) {
            changed = true;
        }
    }

    obj[binding.prop] = value;

    return {
        changed: changed,
        value: value
    };
}

/*
 * Execute an API command. There's really not much to this; it just provides
 * a common hook so that implementations don't need to be synchronized across
 * multiple components with the ability to invoke API commands.
 *
 * @param {string} method
 *      The name of the plotly command to execute. Must be one of 'animate',
 *      'restyle', 'relayout', 'update'.
 * @param {array} args
 *      A list of arguments passed to the API command
 */
exports.executeAPICommand = function(gd, method, args) {
    var apiMethod = Plotly[method];

    var allArgs = [gd];
    for(var i = 0; i < args.length; i++) {
        allArgs.push(args[i]);
    }

    return apiMethod.apply(null, allArgs).catch(function(err) {
        Lib.warn('API call to Plotly.' + method + ' rejected.', err);
        return Promise.reject(err);
    });
};

exports.computeAPICommandBindings = function(gd, method, args) {
    var bindings;
    switch(method) {
        case 'restyle':
            bindings = computeDataBindings(gd, args);
            break;
        case 'relayout':
            bindings = computeLayoutBindings(gd, args);
            break;
        case 'update':
            bindings = computeDataBindings(gd, [args[0], args[2]])
                .concat(computeLayoutBindings(gd, [args[1]]));
            break;
        case 'animate':
            bindings = computeAnimateBindings(gd, args);
            break;
        default:
            // This is the case where intelligent logic about what affects
            // this command is not implemented. It causes no ill effects.
            // For example, addFrames simply won't bind to a control component.
            bindings = [];
    }
    return bindings;
};

function computeAnimateBindings(gd, args) {
    // We'll assume that the only relevant modification an animation
    // makes that's meaningfully tracked is the frame:
    if(Array.isArray(args[0]) && args[0].length === 1 && ['string', 'number'].indexOf(typeof args[0][0]) !== -1) {
        return [{type: 'layout', prop: '_currentFrame', value: args[0][0].toString()}];
    } else {
        return [];
    }
}

function computeLayoutBindings(gd, args) {
    var bindings = [];

    var astr = args[0];
    var aobj = {};
    if(typeof astr === 'string') {
        aobj[astr] = args[1];
    } else if(Lib.isPlainObject(astr)) {
        aobj = astr;
    } else {
        return bindings;
    }

    crawl(aobj, function(path, attrName, attr) {
        bindings.push({type: 'layout', prop: path, value: attr});
    }, '', 0);

    return bindings;
}

function computeDataBindings(gd, args) {
    var traces, astr, val, aobj;
    var bindings = [];

    // Logic copied from Plotly.restyle:
    astr = args[0];
    val = args[1];
    traces = args[2];
    aobj = {};
    if(typeof astr === 'string') {
        aobj[astr] = val;
    } else if(Lib.isPlainObject(astr)) {
        // the 3-arg form
        aobj = astr;

        if(traces === undefined) {
            traces = val;
        }
    } else {
        return bindings;
    }

    if(traces === undefined) {
        // Explicitly assign this to null instead of undefined:
        traces = null;
    }

    crawl(aobj, function(path, attrName, attr) {
        var thisTraces;
        if(Array.isArray(attr)) {
            var nAttr = Math.min(attr.length, gd.data.length);
            if(traces) {
                nAttr = Math.min(nAttr, traces.length);
            }
            thisTraces = [];
            for(var j = 0; j < nAttr; j++) {
                thisTraces[j] = traces ? traces[j] : j;
            }
        } else {
            thisTraces = traces ? traces.slice(0) : null;
        }

        // Convert [7] to just 7 when traces is null:
        if(thisTraces === null) {
            if(Array.isArray(attr)) {
                attr = attr[0];
            }
        } else if(Array.isArray(thisTraces)) {
            if(!Array.isArray(attr)) {
                var tmp = attr;
                attr = [];
                for(var i = 0; i < thisTraces.length; i++) {
                    attr[i] = tmp;
                }
            }
            attr.length = Math.min(thisTraces.length, attr.length);
        }

        bindings.push({
            type: 'data',
            prop: path,
            traces: thisTraces,
            value: attr
        });
    }, '', 0);

    return bindings;
}

function crawl(attrs, callback, path, depth) {
    Object.keys(attrs).forEach(function(attrName) {
        var attr = attrs[attrName];

        if(attrName[0] === '_') return;

        var thisPath = path + (depth > 0 ? '.' : '') + attrName;

        if(Lib.isPlainObject(attr)) {
            crawl(attr, callback, thisPath, depth + 1);
        } else {
            // Only execute the callback on leaf nodes:
            callback(thisPath, attrName, attr);
        }
    });
}

},{"../lib":610,"../plotly":637}],662:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    family: {
        valType: 'string',
        role: 'style',
        noBlank: true,
        strict: true,
        description: [
            'HTML font family - the typeface that will be applied by the web browser.',
            'The web browser will only be able to apply a font if it is available on the system',
            'which it operates. Provide multiple font families, separated by commas, to indicate',
            'the preference in which to apply fonts if they aren\'t available on the system.',
            'The plotly service (at https://plot.ly or on-premise) generates images on a server,',
            'where only a select number of',
            'fonts are installed and supported.',
            'These include *Arial*, *Balto*, *Courier New*, *Droid Sans*,, *Droid Serif*,',
            '*Droid Sans Mono*, *Gravitas One*, *Old Standard TT*, *Open Sans*, *Overpass*,',
            '*PT Sans Narrow*, *Raleway*, *Times New Roman*.'
        ].join(' ')
    },
    size: {
        valType: 'number',
        role: 'style',
        min: 1
    },
    color: {
        valType: 'color',
        role: 'style'
    }
};

},{}],663:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    group: {
        valType: 'string',
        role: 'info',
        description: [
            'An identifier that specifies the group to which the frame belongs,',
            'used by animate to select a subset of frames.'
        ].join(' ')
    },
    name: {
        valType: 'string',
        role: 'info',
        description: 'A label by which to identify the frame'
    },
    traces: {
        valType: 'data_array',
        description: [
            'A list of trace indices that identify the respective traces in the',
            'data attribute'
        ].join(' ')
    },
    baseframe: {
        valType: 'string',
        role: 'info',
        description: [
            'The name of the frame into which this frame\'s properties are merged',
            'before applying. This is used to unify properties and avoid needing',
            'to specify the same values for the same properties in multiple frames.'
        ].join(' ')
    },
    data: {
        valType: 'data_array',
        description: [
            'A list of traces this frame modifies. The format is identical to the',
            'normal trace definition.'
        ].join(' ')
    },
    layout: {
        valType: 'any',
        description: [
            'Layout properties which this frame modifies. The format is identical',
            'to the normal layout definition.'
        ].join(' ')
    }
};

},{}],664:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var params = module.exports = {};

// projection names to d3 function name
params.projNames = {
    // d3.geo.projection
    'equirectangular': 'equirectangular',
    'mercator': 'mercator',
    'orthographic': 'orthographic',
    'natural earth': 'naturalEarth',
    'kavrayskiy7': 'kavrayskiy7',
    'miller': 'miller',
    'robinson': 'robinson',
    'eckert4': 'eckert4',
    'azimuthal equal area': 'azimuthalEqualArea',
    'azimuthal equidistant': 'azimuthalEquidistant',
    'conic equal area': 'conicEqualArea',
    'conic conformal': 'conicConformal',
    'conic equidistant': 'conicEquidistant',
    'gnomonic': 'gnomonic',
    'stereographic': 'stereographic',
    'mollweide': 'mollweide',
    'hammer': 'hammer',
    'transverse mercator': 'transverseMercator',
    'albers usa': 'albersUsa',
    'winkel tripel': 'winkel3'
};

// name of the axes
params.axesNames = ['lonaxis', 'lataxis'];

// max longitudinal angular span (EXPERIMENTAL)
params.lonaxisSpan = {
    'orthographic': 180,
    'azimuthal equal area': 360,
    'azimuthal equidistant': 360,
    'conic conformal': 180,
    'gnomonic': 160,
    'stereographic': 180,
    'transverse mercator': 180,
    '*': 360
};

// max latitudinal angular span (EXPERIMENTAL)
params.lataxisSpan = {
    'conic conformal': 150,
    'stereographic': 179.5,
    '*': 180
};

// defaults for each scope
params.scopeDefaults = {
    world: {
        lonaxisRange: [-180, 180],
        lataxisRange: [-90, 90],
        projType: 'equirectangular',
        projRotate: [0, 0, 0]
    },
    usa: {
        lonaxisRange: [-180, -50],
        lataxisRange: [15, 80],
        projType: 'albers usa'
    },
    europe: {
        lonaxisRange: [-30, 60],
        lataxisRange: [30, 80],
        projType: 'conic conformal',
        projRotate: [15, 0, 0],
        projParallels: [0, 60]
    },
    asia: {
        lonaxisRange: [22, 160],
        lataxisRange: [-15, 55],
        projType: 'mercator',
        projRotate: [0, 0, 0]
    },
    africa: {
        lonaxisRange: [-30, 60],
        lataxisRange: [-40, 40],
        projType: 'mercator',
        projRotate: [0, 0, 0]
    },
    'north america': {
        lonaxisRange: [-180, -45],
        lataxisRange: [5, 85],
        projType: 'conic conformal',
        projRotate: [-100, 0, 0],
        projParallels: [29.5, 45.5]
    },
    'south america': {
        lonaxisRange: [-100, -30],
        lataxisRange: [-60, 15],
        projType: 'mercator',
        projRotate: [0, 0, 0]
    }
};

// angular pad to avoid rounding error around clip angles
params.clipPad = 1e-3;

// map projection precision
params.precision = 0.1;

// default land and water fill colors
params.landColor = '#F0DC82';
params.waterColor = '#3399FF';

// locationmode to layer name
params.locationmodeToLayer = {
    'ISO-3': 'countries',
    'USA-states': 'subunits',
    'country names': 'countries'
};

// SVG element for a sphere (use to frame maps)
params.sphereSVG = {type: 'Sphere'};

// N.B. base layer names must be the same as in the topojson files

// base layer with a fill color
params.fillLayers = ['ocean', 'land', 'lakes'];

// base layer with a only a line color
params.lineLayers = ['subunits', 'countries', 'coastlines', 'rivers', 'frame'];

// all base layers - in order
params.baseLayers = [
    'ocean', 'land', 'lakes',
    'subunits', 'countries', 'coastlines', 'rivers',
    'lataxis', 'lonaxis',
    'frame'
];

params.layerNameToAdjective = {
    ocean: 'ocean',
    land: 'land',
    lakes: 'lake',
    subunits: 'subunit',
    countries: 'country',
    coastlines: 'coastline',
    rivers: 'river',
    frame: 'frame'
};

// base layers drawn over choropleth
params.baseLayersOverChoropleth = ['rivers', 'lakes'];

},{}],665:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/* global PlotlyGeoAssets:false */

var d3 = require('d3');

var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var Axes = require('../../plots/cartesian/axes');
var Fx = require('../../plots/cartesian/graph_interact');

var addProjectionsToD3 = require('./projections');
var createGeoScale = require('./set_scale');
var createGeoZoom = require('./zoom');
var createGeoZoomReset = require('./zoom_reset');
var constants = require('./constants');

var xmlnsNamespaces = require('../../constants/xmlns_namespaces');
var topojsonUtils = require('../../lib/topojson_utils');
var topojsonFeature = require('topojson-client').feature;

// add a few projection types to d3.geo
addProjectionsToD3(d3);


function Geo(options, fullLayout) {
    this.id = options.id;
    this.graphDiv = options.graphDiv;
    this.container = options.container;
    this.topojsonURL = options.topojsonURL;

    this.hoverContainer = null;

    this.topojsonName = null;
    this.topojson = null;

    this.projectionType = null;
    this.projection = null;

    this.clipAngle = null;
    this.setScale = null;
    this.path = null;

    this.zoom = null;
    this.zoomReset = null;

    this.xaxis = null;
    this.yaxis = null;

    this.makeFramework();
    this.updateFx(fullLayout.hovermode);

    this.traceHash = {};
}

module.exports = Geo;

var proto = Geo.prototype;

proto.plot = function(geoCalcData, fullLayout, promises) {
    var _this = this,
        geoLayout = fullLayout[_this.id],
        graphSize = fullLayout._size;

    var topojsonNameNew, topojsonPath;

    // N.B. 'geoLayout' is unambiguous, no need for 'user' geo layout here

    // TODO don't reset projection on all graph edits
    _this.projection = null;

    _this.setScale = createGeoScale(geoLayout, graphSize);
    _this.makeProjection(geoLayout);
    _this.makePath();
    _this.adjustLayout(geoLayout, graphSize);

    _this.zoom = createGeoZoom(_this, geoLayout);
    _this.zoomReset = createGeoZoomReset(_this, geoLayout);
    _this.mockAxis = createMockAxis(fullLayout);

    _this.framework
        .call(_this.zoom)
        .on('dblclick.zoom', _this.zoomReset);

    _this.framework.on('mousemove', function() {
        var mouse = d3.mouse(this),
            lonlat = _this.projection.invert(mouse);

        if(isNaN(lonlat[0]) || isNaN(lonlat[1])) return;

        var evt = {
            target: true,
            xpx: mouse[0],
            ypx: mouse[1]
        };

        _this.xaxis.c2p = function() { return mouse[0]; };
        _this.xaxis.p2c = function() { return lonlat[0]; };
        _this.yaxis.c2p = function() { return mouse[1]; };
        _this.yaxis.p2c = function() { return lonlat[1]; };

        Fx.hover(_this.graphDiv, evt, _this.id);
    });

    _this.framework.on('mouseout', function() {
        Fx.loneUnhover(fullLayout._toppaper);
    });

    _this.framework.on('click', function() {
        Fx.click(_this.graphDiv, { target: true });
    });

    topojsonNameNew = topojsonUtils.getTopojsonName(geoLayout);

    if(_this.topojson === null || topojsonNameNew !== _this.topojsonName) {
        _this.topojsonName = topojsonNameNew;

        if(PlotlyGeoAssets.topojson[_this.topojsonName] !== undefined) {
            _this.topojson = PlotlyGeoAssets.topojson[_this.topojsonName];
            _this.onceTopojsonIsLoaded(geoCalcData, geoLayout);
        }
        else {
            topojsonPath = topojsonUtils.getTopojsonPath(
                _this.topojsonURL,
                _this.topojsonName
            );

            promises.push(new Promise(function(resolve, reject) {
                d3.json(topojsonPath, function(error, topojson) {
                    if(error) {
                        if(error.status === 404) {
                            reject(new Error([
                                'plotly.js could not find topojson file at',
                                topojsonPath, '.',
                                'Make sure the *topojsonURL* plot config option',
                                'is set properly.'
                            ].join(' ')));
                        }
                        else {
                            reject(new Error([
                                'unexpected error while fetching topojson file at',
                                topojsonPath
                            ].join(' ')));
                        }
                        return;
                    }

                    _this.topojson = topojson;
                    PlotlyGeoAssets.topojson[_this.topojsonName] = topojson;

                    _this.onceTopojsonIsLoaded(geoCalcData, geoLayout);
                    resolve();
                });
            }));
        }
    }
    else _this.onceTopojsonIsLoaded(geoCalcData, geoLayout);

    // TODO handle topojson-is-loading case
    // to avoid making multiple request while streaming
};

proto.onceTopojsonIsLoaded = function(geoCalcData, geoLayout) {
    var i;

    this.drawLayout(geoLayout);

    var traceHashOld = this.traceHash;
    var traceHash = {};

    for(i = 0; i < geoCalcData.length; i++) {
        var calcData = geoCalcData[i],
            trace = calcData[0].trace;

        traceHash[trace.type] = traceHash[trace.type] || [];
        traceHash[trace.type].push(calcData);
    }

    var moduleNamesOld = Object.keys(traceHashOld);
    var moduleNames = Object.keys(traceHash);

    // when a trace gets deleted, make sure that its module's
    // plot method is called so that it is properly
    // removed from the DOM.
    for(i = 0; i < moduleNamesOld.length; i++) {
        var moduleName = moduleNamesOld[i];

        if(moduleNames.indexOf(moduleName) === -1) {
            var fakeCalcTrace = traceHashOld[moduleName][0],
                fakeTrace = fakeCalcTrace[0].trace;

            fakeTrace.visible = false;
            traceHash[moduleName] = [fakeCalcTrace];
        }
    }

    moduleNames = Object.keys(traceHash);

    for(i = 0; i < moduleNames.length; i++) {
        var moduleCalcData = traceHash[moduleNames[i]],
            _module = moduleCalcData[0][0].trace._module;

        _module.plot(this, filterVisible(moduleCalcData), geoLayout);
    }

    this.traceHash = traceHash;

    this.render();
};

function filterVisible(calcDataIn) {
    var calcDataOut = [];

    for(var i = 0; i < calcDataIn.length; i++) {
        var calcTrace = calcDataIn[i],
            trace = calcTrace[0].trace;

        if(trace.visible === true) calcDataOut.push(calcTrace);
    }

    return calcDataOut;
}

proto.updateFx = function(hovermode) {
    this.showHover = (hovermode !== false);

    // TODO should more strict, any layout.hovermode other
    // then false will make all geo subplot display hover text.
    // Instead each geo should have its own geo.hovermode
    // to control hover visibility independently of other subplots.
};

proto.makeProjection = function(geoLayout) {
    var projLayout = geoLayout.projection,
        projType = projLayout.type,
        isNew = this.projection === null || projType !== this.projectionType,
        projection;

    if(isNew) {
        this.projectionType = projType;
        projection = this.projection = d3.geo[constants.projNames[projType]]();
    }
    else projection = this.projection;

    projection
        .translate(projLayout._translate0)
        .precision(constants.precision);

    if(!geoLayout._isAlbersUsa) {
        projection
            .rotate(projLayout._rotate)
            .center(projLayout._center);
    }

    if(geoLayout._clipAngle) {
        this.clipAngle = geoLayout._clipAngle;  // needed in proto.render
        projection
            .clipAngle(geoLayout._clipAngle - constants.clipPad);
    }
    else this.clipAngle = null;  // for graph edits

    if(projLayout.parallels) {
        projection
            .parallels(projLayout.parallels);
    }

    if(isNew) this.setScale(projection);

    projection
        .translate(projLayout._translate)
        .scale(projLayout._scale);
};

proto.makePath = function() {
    this.path = d3.geo.path().projection(this.projection);
};

/*
 * <div this.container>
 *   <div this.geoDiv>
 *     <svg this.hoverContainer>
 *     <svg this.framework>
 */
proto.makeFramework = function() {
    var geoDiv = this.geoDiv = d3.select(this.container).append('div');
    geoDiv
        .attr('id', this.id)
        .style('position', 'absolute');

    // only choropleth traces use this,
    // scattergeo traces use Fx.hover and fullLayout._hoverlayer
    var hoverContainer = this.hoverContainer = geoDiv.append('svg');
    hoverContainer
        .attr(xmlnsNamespaces.svgAttrs)
        .style({
            'position': 'absolute',
            'z-index': 20,
            'pointer-events': 'none'
        });

    var framework = this.framework = geoDiv.append('svg');
    framework
        .attr(xmlnsNamespaces.svgAttrs)
        .attr({
            'position': 'absolute',
            'preserveAspectRatio': 'none'
        });

    framework.append('g').attr('class', 'bglayer')
        .append('rect');

    framework.append('g').attr('class', 'baselayer');
    framework.append('g').attr('class', 'choroplethlayer');
    framework.append('g').attr('class', 'baselayeroverchoropleth');
    framework.append('g').attr('class', 'scattergeolayer');

    // N.B. disable dblclick zoom default
    framework.on('dblclick.zoom', null);

    // TODO use clip paths instead of nested SVG

    this.xaxis = { _id: 'x' };
    this.yaxis = { _id: 'y' };
};

proto.adjustLayout = function(geoLayout, graphSize) {
    var domain = geoLayout.domain;

    var left = graphSize.l + graphSize.w * domain.x[0] + geoLayout._marginX,
        top = graphSize.t + graphSize.h * (1 - domain.y[1]) + geoLayout._marginY;

    this.geoDiv.style({
        left: left + 'px',
        top: top + 'px',
        width: geoLayout._width + 'px',
        height: geoLayout._height + 'px'
    });

    this.hoverContainer.attr({
        width: geoLayout._width,
        height: geoLayout._height
    });

    this.framework.attr({
        width: geoLayout._width,
        height: geoLayout._height
    });

    this.framework.select('.bglayer').select('rect')
        .attr({
            width: geoLayout._width,
            height: geoLayout._height
        })
        .call(Color.fill, geoLayout.bgcolor);

    this.xaxis._offset = left;
    this.xaxis._length = geoLayout._width;

    this.yaxis._offset = top;
    this.yaxis._length = geoLayout._height;
};

proto.drawTopo = function(selection, layerName, geoLayout) {
    if(geoLayout['show' + layerName] !== true) return;

    var topojson = this.topojson,
        datum = layerName === 'frame' ?
            constants.sphereSVG :
            topojsonFeature(topojson, topojson.objects[layerName]);

    selection.append('g')
        .datum(datum)
        .attr('class', layerName)
          .append('path')
            .attr('class', 'basepath');
};

function makeGraticule(lonaxisRange, lataxisRange, step) {
    return d3.geo.graticule()
        .extent([
            [lonaxisRange[0], lataxisRange[0]],
            [lonaxisRange[1], lataxisRange[1]]
        ])
        .step(step);
}

proto.drawGraticule = function(selection, axisName, geoLayout) {
    var axisLayout = geoLayout[axisName];

    if(axisLayout.showgrid !== true) return;

    var scopeDefaults = constants.scopeDefaults[geoLayout.scope],
        lonaxisRange = scopeDefaults.lonaxisRange,
        lataxisRange = scopeDefaults.lataxisRange,
        step = axisName === 'lonaxis' ?
            [axisLayout.dtick] :
            [0, axisLayout.dtick],
        graticule = makeGraticule(lonaxisRange, lataxisRange, step);

    selection.append('g')
        .datum(graticule)
        .attr('class', axisName + 'graticule')
            .append('path')
                .attr('class', 'graticulepath');
};

proto.drawLayout = function(geoLayout) {
    var gBaseLayer = this.framework.select('g.baselayer'),
        baseLayers = constants.baseLayers,
        axesNames = constants.axesNames,
        layerName;

    // TODO move to more d3-idiomatic pattern (that's work on replot)
    // N.B. html('') does not work in IE11
    gBaseLayer.selectAll('*').remove();

    for(var i = 0; i < baseLayers.length; i++) {
        layerName = baseLayers[i];

        if(axesNames.indexOf(layerName) !== -1) {
            this.drawGraticule(gBaseLayer, layerName, geoLayout);
        }
        else this.drawTopo(gBaseLayer, layerName, geoLayout);
    }

    this.styleLayout(geoLayout);
};

function styleFillLayer(selection, layerName, geoLayout) {
    var layerAdj = constants.layerNameToAdjective[layerName];

    selection.select('.' + layerName)
        .selectAll('path')
            .attr('stroke', 'none')
            .call(Color.fill, geoLayout[layerAdj + 'color']);
}

function styleLineLayer(selection, layerName, geoLayout) {
    var layerAdj = constants.layerNameToAdjective[layerName];

    selection.select('.' + layerName)
        .selectAll('path')
            .attr('fill', 'none')
            .call(Color.stroke, geoLayout[layerAdj + 'color'])
            .call(Drawing.dashLine, '', geoLayout[layerAdj + 'width']);
}

function styleGraticule(selection, axisName, geoLayout) {
    selection.select('.' + axisName + 'graticule')
        .selectAll('path')
            .attr('fill', 'none')
            .call(Color.stroke, geoLayout[axisName].gridcolor)
            .call(Drawing.dashLine, '', geoLayout[axisName].gridwidth);
}

proto.styleLayer = function(selection, layerName, geoLayout) {
    var fillLayers = constants.fillLayers,
        lineLayers = constants.lineLayers;

    if(fillLayers.indexOf(layerName) !== -1) {
        styleFillLayer(selection, layerName, geoLayout);
    }
    else if(lineLayers.indexOf(layerName) !== -1) {
        styleLineLayer(selection, layerName, geoLayout);
    }
};

proto.styleLayout = function(geoLayout) {
    var gBaseLayer = this.framework.select('g.baselayer'),
        baseLayers = constants.baseLayers,
        axesNames = constants.axesNames,
        layerName;

    for(var i = 0; i < baseLayers.length; i++) {
        layerName = baseLayers[i];

        if(axesNames.indexOf(layerName) !== -1) {
            styleGraticule(gBaseLayer, layerName, geoLayout);
        }
        else this.styleLayer(gBaseLayer, layerName, geoLayout);
    }
};

proto.isLonLatOverEdges = function(lonlat) {
    var clipAngle = this.clipAngle;

    if(clipAngle === null) return false;

    var p = this.projection.rotate(),
        angle = d3.geo.distance(lonlat, [-p[0], -p[1]]),
        maxAngle = clipAngle * Math.PI / 180;

    return angle > maxAngle;
};

// [hot code path] (re)draw all paths which depend on the projection
proto.render = function() {
    var _this = this,
        framework = _this.framework,
        gChoropleth = framework.select('g.choroplethlayer'),
        gScatterGeo = framework.select('g.scattergeolayer'),
        path = _this.path;

    function translatePoints(d) {
        var lonlatPx = _this.projection(d.lonlat);
        if(!lonlatPx) return null;

        return 'translate(' + lonlatPx[0] + ',' + lonlatPx[1] + ')';
    }

    // hide paths over edges of clipped projections
    function hideShowPoints(d) {
        return _this.isLonLatOverEdges(d.lonlat) ? '0' : '1.0';
    }

    framework.selectAll('path.basepath').attr('d', path);
    framework.selectAll('path.graticulepath').attr('d', path);

    gChoropleth.selectAll('path.choroplethlocation').attr('d', path);
    gChoropleth.selectAll('path.basepath').attr('d', path);

    gScatterGeo.selectAll('path.js-line').attr('d', path);

    if(_this.clipAngle !== null) {
        gScatterGeo.selectAll('path.point')
            .style('opacity', hideShowPoints)
            .attr('transform', translatePoints);
        gScatterGeo.selectAll('text')
            .style('opacity', hideShowPoints)
            .attr('transform', translatePoints);
    }
    else {
        gScatterGeo.selectAll('path.point')
            .attr('transform', translatePoints);
        gScatterGeo.selectAll('text')
            .attr('transform', translatePoints);
    }
};

// create a mock axis used to format hover text
function createMockAxis(fullLayout) {
    var mockAxis = {
        type: 'linear',
        showexponent: 'all',
        exponentformat: Axes.layoutAttributes.exponentformat.dflt,
        _gd: { _fullLayout: fullLayout }
    };

    Axes.setConvert(mockAxis);
    return mockAxis;
}

},{"../../components/color":510,"../../components/drawing":533,"../../constants/xmlns_namespaces":595,"../../lib/topojson_utils":626,"../../plots/cartesian/axes":642,"../../plots/cartesian/graph_interact":649,"./constants":664,"./projections":672,"./set_scale":673,"./zoom":674,"./zoom_reset":675,"d3":86,"topojson-client":987}],666:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Geo = require('./geo');

var Plots = require('../../plots/plots');


exports.name = 'geo';

exports.attr = 'geo';

exports.idRoot = 'geo';

exports.idRegex = /^geo([2-9]|[1-9][0-9]+)?$/;

exports.attrRegex = /^geo([2-9]|[1-9][0-9]+)?$/;

exports.attributes = require('./layout/attributes');

exports.layoutAttributes = require('./layout/layout_attributes');

exports.supplyLayoutDefaults = require('./layout/defaults');

exports.plot = function plotGeo(gd) {
    var fullLayout = gd._fullLayout,
        calcData = gd.calcdata,
        geoIds = Plots.getSubplotIds(fullLayout, 'geo');

    /**
     * If 'plotly-geo-assets.js' is not included,
     * initialize object to keep reference to every loaded topojson
     */
    if(window.PlotlyGeoAssets === undefined) {
        window.PlotlyGeoAssets = { topojson: {} };
    }

    for(var i = 0; i < geoIds.length; i++) {
        var geoId = geoIds[i],
            geoCalcData = getSubplotCalcData(calcData, geoId),
            geo = fullLayout[geoId]._subplot;

        // If geo is not instantiated, create one!
        if(geo === undefined) {
            geo = new Geo({
                id: geoId,
                graphDiv: gd,
                container: fullLayout._geocontainer.node(),
                topojsonURL: gd._context.topojsonURL
            },
                fullLayout
            );

            fullLayout[geoId]._subplot = geo;
        }

        geo.plot(geoCalcData, fullLayout, gd._promises);
    }
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldGeoKeys = Plots.getSubplotIds(oldFullLayout, 'geo');

    for(var i = 0; i < oldGeoKeys.length; i++) {
        var oldGeoKey = oldGeoKeys[i];
        var oldGeo = oldFullLayout[oldGeoKey]._subplot;

        if(!newFullLayout[oldGeoKey] && !!oldGeo) {
            oldGeo.geoDiv.remove();
        }
    }
};

exports.toSVG = function(gd) {
    var fullLayout = gd._fullLayout,
        geoIds = Plots.getSubplotIds(fullLayout, 'geo'),
        size = fullLayout._size;

    for(var i = 0; i < geoIds.length; i++) {
        var geoLayout = fullLayout[geoIds[i]],
            domain = geoLayout.domain,
            geoFramework = geoLayout._subplot.framework;

        geoFramework.attr('style', null);
        geoFramework
            .attr({
                x: size.l + size.w * domain.x[0] + geoLayout._marginX,
                y: size.t + size.h * (1 - domain.y[1]) + geoLayout._marginY,
                width: geoLayout._width,
                height: geoLayout._height
            });

        fullLayout._geoimages.node()
            .appendChild(geoFramework.node());
    }
};

function getSubplotCalcData(calcData, id) {
    var subplotCalcData = [];

    for(var i = 0; i < calcData.length; i++) {
        var calcTrace = calcData[i],
            trace = calcTrace[0].trace;

        if(trace.geo === id) subplotCalcData.push(calcTrace);
    }

    return subplotCalcData;
}

},{"../../plots/plots":702,"./geo":665,"./layout/attributes":667,"./layout/defaults":670,"./layout/layout_attributes":671}],667:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    geo: {
        valType: 'subplotid',
        role: 'info',
        dflt: 'geo',
        description: [
            'Sets a reference between this trace\'s geospatial coordinates and',
            'a geographic map.',
            'If *geo* (the default value), the geospatial coordinates refer to',
            '`layout.geo`.',
            'If *geo2*, the geospatial coordinates refer to `layout.geo2`,',
            'and so on.'
        ].join(' ')
    }
};

},{}],668:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttrs = require('../../../components/color/attributes');


module.exports = {
    range: {
        valType: 'info_array',
        role: 'info',
        items: [
            {valType: 'number'},
            {valType: 'number'}
        ],
        description: 'Sets the range of this axis (in degrees).'
    },
    showgrid: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: 'Sets whether or not graticule are shown on the map.'
    },
    tick0: {
        valType: 'number',
        role: 'info',
        description: [
            'Sets the graticule\'s starting tick longitude/latitude.'
        ].join(' ')
    },
    dtick: {
        valType: 'number',
        role: 'info',
        description: [
            'Sets the graticule\'s longitude/latitude tick step.'
        ].join(' ')
    },
    gridcolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.lightLine,
        description: [
            'Sets the graticule\'s stroke color.'
        ].join(' ')
    },
    gridwidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 1,
        description: [
            'Sets the graticule\'s stroke width (in px).'
        ].join(' ')
    }
};

},{"../../../components/color/attributes":509}],669:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../../lib');
var constants = require('../constants');
var axisAttributes = require('./axis_attributes');


module.exports = function supplyGeoAxisLayoutDefaults(geoLayoutIn, geoLayoutOut) {
    var axesNames = constants.axesNames;

    var axisIn, axisOut;

    function coerce(attr, dflt) {
        return Lib.coerce(axisIn, axisOut, axisAttributes, attr, dflt);
    }

    function getRangeDflt(axisName) {
        var scope = geoLayoutOut.scope;

        var projLayout, projType, projRotation, rotateAngle, dfltSpans, halfSpan;

        if(scope === 'world') {
            projLayout = geoLayoutOut.projection;
            projType = projLayout.type;
            projRotation = projLayout.rotation;
            dfltSpans = constants[axisName + 'Span'];

            halfSpan = dfltSpans[projType] !== undefined ?
                dfltSpans[projType] / 2 :
                dfltSpans['*'] / 2;
            rotateAngle = axisName === 'lonaxis' ?
                projRotation.lon :
                projRotation.lat;

            return [rotateAngle - halfSpan, rotateAngle + halfSpan];
        }
        else return constants.scopeDefaults[scope][axisName + 'Range'];
    }

    for(var i = 0; i < axesNames.length; i++) {
        var axisName = axesNames[i];
        axisIn = geoLayoutIn[axisName] || {};
        axisOut = {};

        var rangeDflt = getRangeDflt(axisName);

        var range = coerce('range', rangeDflt);

        Lib.noneOrAll(axisIn.range, axisOut.range, [0, 1]);

        coerce('tick0', range[0]);
        coerce('dtick', axisName === 'lonaxis' ? 30 : 10);

        var show = coerce('showgrid');
        if(show) {
            coerce('gridcolor');
            coerce('gridwidth');
        }

        geoLayoutOut[axisName] = axisOut;
        geoLayoutOut[axisName]._fullRange = rangeDflt;
    }
};

},{"../../../lib":610,"../constants":664,"./axis_attributes":668}],670:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var handleSubplotDefaults = require('../../subplot_defaults');
var constants = require('../constants');
var layoutAttributes = require('./layout_attributes');
var supplyGeoAxisLayoutDefaults = require('./axis_defaults');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    handleSubplotDefaults(layoutIn, layoutOut, fullData, {
        type: 'geo',
        attributes: layoutAttributes,
        handleDefaults: handleGeoDefaults,
        partition: 'y'
    });
};

function handleGeoDefaults(geoLayoutIn, geoLayoutOut, coerce) {
    var show;

    var scope = coerce('scope');
    var isScoped = (scope !== 'world');
    var scopeParams = constants.scopeDefaults[scope];

    var resolution = coerce('resolution');

    var projType = coerce('projection.type', scopeParams.projType);
    var isAlbersUsa = projType === 'albers usa';
    var isConic = projType.indexOf('conic') !== -1;

    if(isConic) {
        var dfltProjParallels = scopeParams.projParallels || [0, 60];
        coerce('projection.parallels', dfltProjParallels);
    }

    if(!isAlbersUsa) {
        var dfltProjRotate = scopeParams.projRotate || [0, 0, 0];
        coerce('projection.rotation.lon', dfltProjRotate[0]);
        coerce('projection.rotation.lat', dfltProjRotate[1]);
        coerce('projection.rotation.roll', dfltProjRotate[2]);

        show = coerce('showcoastlines', !isScoped);
        if(show) {
            coerce('coastlinecolor');
            coerce('coastlinewidth');
        }

        show = coerce('showocean');
        if(show) coerce('oceancolor');
    }
    else geoLayoutOut.scope = 'usa';

    coerce('projection.scale');

    show = coerce('showland');
    if(show) coerce('landcolor');

    show = coerce('showlakes');
    if(show) coerce('lakecolor');

    show = coerce('showrivers');
    if(show) {
        coerce('rivercolor');
        coerce('riverwidth');
    }

    show = coerce('showcountries', isScoped && scope !== 'usa');
    if(show) {
        coerce('countrycolor');
        coerce('countrywidth');
    }

    if(scope === 'usa' || (scope === 'north america' && resolution === 50)) {
        // Only works for:
        //   USA states at 110m
        //   USA states + Canada provinces at 50m
        coerce('showsubunits', true);
        coerce('subunitcolor');
        coerce('subunitwidth');
    }

    if(!isScoped) {
        // Does not work in non-world scopes
        show = coerce('showframe', true);
        if(show) {
            coerce('framecolor');
            coerce('framewidth');
        }
    }

    coerce('bgcolor');

    supplyGeoAxisLayoutDefaults(geoLayoutIn, geoLayoutOut);

    // bind a few helper variables
    geoLayoutOut._isHighRes = resolution === 50;
    geoLayoutOut._clipAngle = constants.lonaxisSpan[projType] / 2;
    geoLayoutOut._isAlbersUsa = isAlbersUsa;
    geoLayoutOut._isConic = isConic;
    geoLayoutOut._isScoped = isScoped;

    var rotation = geoLayoutOut.projection.rotation || {};
    geoLayoutOut.projection._rotate = [
        -rotation.lon || 0,
        -rotation.lat || 0,
        rotation.roll || 0
    ];
}

},{"../../subplot_defaults":709,"../constants":664,"./axis_defaults":669,"./layout_attributes":671}],671:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttrs = require('../../../components/color/attributes');
var constants = require('../constants');
var geoAxesAttrs = require('./axis_attributes');


module.exports = {
    domain: {
        x: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the horizontal domain of this map',
                '(in plot fraction).'
            ].join(' ')
        },
        y: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the vertical domain of this map',
                '(in plot fraction).'
            ].join(' ')
        }
    },
    resolution: {
        valType: 'enumerated',
        values: [110, 50],
        role: 'info',
        dflt: 110,
        coerceNumber: true,
        description: [
            'Sets the resolution of the base layers.',
            'The values have units of km/mm',
            'e.g. 110 corresponds to a scale ratio of 1:110,000,000.'
        ].join(' ')
    },
    scope: {
        valType: 'enumerated',
        role: 'info',
        values: Object.keys(constants.scopeDefaults),
        dflt: 'world',
        description: 'Set the scope of the map.'
    },
    projection: {
        type: {
            valType: 'enumerated',
            role: 'info',
            values: Object.keys(constants.projNames),
            description: 'Sets the projection type.'
        },
        rotation: {
            lon: {
                valType: 'number',
                role: 'info',
                description: [
                    'Rotates the map along parallels',
                    '(in degrees East).'
                ].join(' ')
            },
            lat: {
                valType: 'number',
                role: 'info',
                description: [
                    'Rotates the map along meridians',
                    '(in degrees North).'
                ].join(' ')
            },
            roll: {
                valType: 'number',
                role: 'info',
                description: [
                    'Roll the map (in degrees)',
                    'For example, a roll of *180* makes the map appear upside down.'
                ].join(' ')
            }
        },
        parallels: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number'},
                {valType: 'number'}
            ],
            description: [
                'For conic projection types only.',
                'Sets the parallels (tangent, secant)',
                'where the cone intersects the sphere.'
            ].join(' ')
        },
        scale: {
            valType: 'number',
            role: 'info',
            min: 0,
            max: 10,
            dflt: 1,
            description: 'Zooms in or out on the map view.'
        }
    },
    showcoastlines: {
        valType: 'boolean',
        role: 'info',
        description: 'Sets whether or not the coastlines are drawn.'
    },
    coastlinecolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.defaultLine,
        description: 'Sets the coastline color.'
    },
    coastlinewidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 1,
        description: 'Sets the coastline stroke width (in px).'
    },
    showland: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: 'Sets whether or not land masses are filled in color.'
    },
    landcolor: {
        valType: 'color',
        role: 'style',
        dflt: constants.landColor,
        description: 'Sets the land mass color.'
    },
    showocean: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: 'Sets whether or not oceans are filled in color.'
    },
    oceancolor: {
        valType: 'color',
        role: 'style',
        dflt: constants.waterColor,
        description: 'Sets the ocean color'
    },
    showlakes: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: 'Sets whether or not lakes are drawn.'
    },
    lakecolor: {
        valType: 'color',
        role: 'style',
        dflt: constants.waterColor,
        description: 'Sets the color of the lakes.'
    },
    showrivers: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: 'Sets whether or not rivers are drawn.'
    },
    rivercolor: {
        valType: 'color',
        role: 'style',
        dflt: constants.waterColor,
        description: 'Sets color of the rivers.'
    },
    riverwidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 1,
        description: 'Sets the stroke width (in px) of the rivers.'
    },
    showcountries: {
        valType: 'boolean',
        role: 'info',
        description: 'Sets whether or not country boundaries are drawn.'
    },
    countrycolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.defaultLine,
        description: 'Sets line color of the country boundaries.'
    },
    countrywidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 1,
        description: 'Sets line width (in px) of the country boundaries.'
    },
    showsubunits: {
        valType: 'boolean',
        role: 'info',
        description: [
            'Sets whether or not boundaries of subunits within countries',
            '(e.g. states, provinces) are drawn.'
        ].join(' ')
    },
    subunitcolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.defaultLine,
        description: 'Sets the color of the subunits boundaries.'
    },
    subunitwidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 1,
        description: 'Sets the stroke width (in px) of the subunits boundaries.'
    },
    showframe: {
        valType: 'boolean',
        role: 'info',
        description: 'Sets whether or not a frame is drawn around the map.'
    },
    framecolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.defaultLine,
        description: 'Sets the color the frame.'
    },
    framewidth: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 1,
        description: 'Sets the stroke width (in px) of the frame.'
    },
    bgcolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.background,
        description: 'Set the background color of the map'
    },
    lonaxis: geoAxesAttrs,
    lataxis: geoAxesAttrs
};

},{"../../../components/color/attributes":509,"../constants":664,"./axis_attributes":668}],672:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

/*
 * Generated by https://github.com/etpinard/d3-geo-projection-picker
 *
 * which is hand-picks projection from https://github.com/d3/d3-geo-projection
 *
 * into a CommonJS require-able module.
 */

'use strict';

/* eslint-disable */

function addProjectionsToD3(d3) {
  d3.geo.project = function(object, projection) {
    var stream = projection.stream;
    if (!stream) throw new Error("not yet supported");
    return (object && d3_geo_projectObjectType.hasOwnProperty(object.type) ? d3_geo_projectObjectType[object.type] : d3_geo_projectGeometry)(object, stream);
  };
  function d3_geo_projectFeature(object, stream) {
    return {
      type: "Feature",
      id: object.id,
      properties: object.properties,
      geometry: d3_geo_projectGeometry(object.geometry, stream)
    };
  }
  function d3_geo_projectGeometry(geometry, stream) {
    if (!geometry) return null;
    if (geometry.type === "GeometryCollection") return {
      type: "GeometryCollection",
      geometries: object.geometries.map(function(geometry) {
        return d3_geo_projectGeometry(geometry, stream);
      })
    };
    if (!d3_geo_projectGeometryType.hasOwnProperty(geometry.type)) return null;
    var sink = d3_geo_projectGeometryType[geometry.type];
    d3.geo.stream(geometry, stream(sink));
    return sink.result();
  }
  var d3_geo_projectObjectType = {
    Feature: d3_geo_projectFeature,
    FeatureCollection: function(object, stream) {
      return {
        type: "FeatureCollection",
        features: object.features.map(function(feature) {
          return d3_geo_projectFeature(feature, stream);
        })
      };
    }
  };
  var d3_geo_projectPoints = [], d3_geo_projectLines = [];
  var d3_geo_projectPoint = {
    point: function(x, y) {
      d3_geo_projectPoints.push([ x, y ]);
    },
    result: function() {
      var result = !d3_geo_projectPoints.length ? null : d3_geo_projectPoints.length < 2 ? {
        type: "Point",
        coordinates: d3_geo_projectPoints[0]
      } : {
        type: "MultiPoint",
        coordinates: d3_geo_projectPoints
      };
      d3_geo_projectPoints = [];
      return result;
    }
  };
  var d3_geo_projectLine = {
    lineStart: d3_geo_projectNoop,
    point: function(x, y) {
      d3_geo_projectPoints.push([ x, y ]);
    },
    lineEnd: function() {
      if (d3_geo_projectPoints.length) d3_geo_projectLines.push(d3_geo_projectPoints), 
      d3_geo_projectPoints = [];
    },
    result: function() {
      var result = !d3_geo_projectLines.length ? null : d3_geo_projectLines.length < 2 ? {
        type: "LineString",
        coordinates: d3_geo_projectLines[0]
      } : {
        type: "MultiLineString",
        coordinates: d3_geo_projectLines
      };
      d3_geo_projectLines = [];
      return result;
    }
  };
  var d3_geo_projectPolygon = {
    polygonStart: d3_geo_projectNoop,
    lineStart: d3_geo_projectNoop,
    point: function(x, y) {
      d3_geo_projectPoints.push([ x, y ]);
    },
    lineEnd: function() {
      var n = d3_geo_projectPoints.length;
      if (n) {
        do d3_geo_projectPoints.push(d3_geo_projectPoints[0].slice()); while (++n < 4);
        d3_geo_projectLines.push(d3_geo_projectPoints), d3_geo_projectPoints = [];
      }
    },
    polygonEnd: d3_geo_projectNoop,
    result: function() {
      if (!d3_geo_projectLines.length) return null;
      var polygons = [], holes = [];
      d3_geo_projectLines.forEach(function(ring) {
        if (d3_geo_projectClockwise(ring)) polygons.push([ ring ]); else holes.push(ring);
      });
      holes.forEach(function(hole) {
        var point = hole[0];
        polygons.some(function(polygon) {
          if (d3_geo_projectContains(polygon[0], point)) {
            polygon.push(hole);
            return true;
          }
        }) || polygons.push([ hole ]);
      });
      d3_geo_projectLines = [];
      return !polygons.length ? null : polygons.length > 1 ? {
        type: "MultiPolygon",
        coordinates: polygons
      } : {
        type: "Polygon",
        coordinates: polygons[0]
      };
    }
  };
  var d3_geo_projectGeometryType = {
    Point: d3_geo_projectPoint,
    MultiPoint: d3_geo_projectPoint,
    LineString: d3_geo_projectLine,
    MultiLineString: d3_geo_projectLine,
    Polygon: d3_geo_projectPolygon,
    MultiPolygon: d3_geo_projectPolygon,
    Sphere: d3_geo_projectPolygon
  };
  function d3_geo_projectNoop() {}
  function d3_geo_projectClockwise(ring) {
    if ((n = ring.length) < 4) return false;
    var i = 0, n, area = ring[n - 1][1] * ring[0][0] - ring[n - 1][0] * ring[0][1];
    while (++i < n) area += ring[i - 1][1] * ring[i][0] - ring[i - 1][0] * ring[i][1];
    return area <= 0;
  }
  function d3_geo_projectContains(ring, point) {
    var x = point[0], y = point[1], contains = false;
    for (var i = 0, n = ring.length, j = n - 1; i < n; j = i++) {
      var pi = ring[i], xi = pi[0], yi = pi[1], pj = ring[j], xj = pj[0], yj = pj[1];
      if (yi > y ^ yj > y && x < (xj - xi) * (y - yi) / (yj - yi) + xi) contains = !contains;
    }
    return contains;
  }
  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, halfπ = π / 2, sqrtπ = Math.sqrt(π), radians = π / 180, degrees = 180 / π;
  function sinci(x) {
    return x ? x / Math.sin(x) : 1;
  }
  function sgn(x) {
    return x > 0 ? 1 : x < 0 ? -1 : 0;
  }
  function asin(x) {
    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
  }
  function acos(x) {
    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
  }
  function asqrt(x) {
    return x > 0 ? Math.sqrt(x) : 0;
  }
  var projection = d3.geo.projection, projectionMutator = d3.geo.projectionMutator;
  d3.geo.interrupt = function(project) {
    var lobes = [ [ [ [ -π, 0 ], [ 0, halfπ ], [ π, 0 ] ] ], [ [ [ -π, 0 ], [ 0, -halfπ ], [ π, 0 ] ] ] ];
    var bounds;
    function forward(λ, φ) {
      var sign = φ < 0 ? -1 : +1, hemilobes = lobes[+(φ < 0)];
      for (var i = 0, n = hemilobes.length - 1; i < n && λ > hemilobes[i][2][0]; ++i) ;
      var coordinates = project(λ - hemilobes[i][1][0], φ);
      coordinates[0] += project(hemilobes[i][1][0], sign * φ > sign * hemilobes[i][0][1] ? hemilobes[i][0][1] : φ)[0];
      return coordinates;
    }
    function reset() {
      bounds = lobes.map(function(hemilobes) {
        return hemilobes.map(function(lobe) {
          var x0 = project(lobe[0][0], lobe[0][1])[0], x1 = project(lobe[2][0], lobe[2][1])[0], y0 = project(lobe[1][0], lobe[0][1])[1], y1 = project(lobe[1][0], lobe[1][1])[1], t;
          if (y0 > y1) t = y0, y0 = y1, y1 = t;
          return [ [ x0, y0 ], [ x1, y1 ] ];
        });
      });
    }
    if (project.invert) forward.invert = function(x, y) {
      var hemibounds = bounds[+(y < 0)], hemilobes = lobes[+(y < 0)];
      for (var i = 0, n = hemibounds.length; i < n; ++i) {
        var b = hemibounds[i];
        if (b[0][0] <= x && x < b[1][0] && b[0][1] <= y && y < b[1][1]) {
          var coordinates = project.invert(x - project(hemilobes[i][1][0], 0)[0], y);
          coordinates[0] += hemilobes[i][1][0];
          return pointEqual(forward(coordinates[0], coordinates[1]), [ x, y ]) ? coordinates : null;
        }
      }
    };
    var projection = d3.geo.projection(forward), stream_ = projection.stream;
    projection.stream = function(stream) {
      var rotate = projection.rotate(), rotateStream = stream_(stream), sphereStream = (projection.rotate([ 0, 0 ]), 
      stream_(stream));
      projection.rotate(rotate);
      rotateStream.sphere = function() {
        d3.geo.stream(sphere(), sphereStream);
      };
      return rotateStream;
    };
    projection.lobes = function(_) {
      if (!arguments.length) return lobes.map(function(lobes) {
        return lobes.map(function(lobe) {
          return [ [ lobe[0][0] * 180 / π, lobe[0][1] * 180 / π ], [ lobe[1][0] * 180 / π, lobe[1][1] * 180 / π ], [ lobe[2][0] * 180 / π, lobe[2][1] * 180 / π ] ];
        });
      });
      lobes = _.map(function(lobes) {
        return lobes.map(function(lobe) {
          return [ [ lobe[0][0] * π / 180, lobe[0][1] * π / 180 ], [ lobe[1][0] * π / 180, lobe[1][1] * π / 180 ], [ lobe[2][0] * π / 180, lobe[2][1] * π / 180 ] ];
        });
      });
      reset();
      return projection;
    };
    function sphere() {
      var ε = 1e-6, coordinates = [];
      for (var i = 0, n = lobes[0].length; i < n; ++i) {
        var lobe = lobes[0][i], λ0 = lobe[0][0] * 180 / π, φ0 = lobe[0][1] * 180 / π, φ1 = lobe[1][1] * 180 / π, λ2 = lobe[2][0] * 180 / π, φ2 = lobe[2][1] * 180 / π;
        coordinates.push(resample([ [ λ0 + ε, φ0 + ε ], [ λ0 + ε, φ1 - ε ], [ λ2 - ε, φ1 - ε ], [ λ2 - ε, φ2 + ε ] ], 30));
      }
      for (var i = lobes[1].length - 1; i >= 0; --i) {
        var lobe = lobes[1][i], λ0 = lobe[0][0] * 180 / π, φ0 = lobe[0][1] * 180 / π, φ1 = lobe[1][1] * 180 / π, λ2 = lobe[2][0] * 180 / π, φ2 = lobe[2][1] * 180 / π;
        coordinates.push(resample([ [ λ2 - ε, φ2 - ε ], [ λ2 - ε, φ1 + ε ], [ λ0 + ε, φ1 + ε ], [ λ0 + ε, φ0 - ε ] ], 30));
      }
      return {
        type: "Polygon",
        coordinates: [ d3.merge(coordinates) ]
      };
    }
    function resample(coordinates, m) {
      var i = -1, n = coordinates.length, p0 = coordinates[0], p1, dx, dy, resampled = [];
      while (++i < n) {
        p1 = coordinates[i];
        dx = (p1[0] - p0[0]) / m;
        dy = (p1[1] - p0[1]) / m;
        for (var j = 0; j < m; ++j) resampled.push([ p0[0] + j * dx, p0[1] + j * dy ]);
        p0 = p1;
      }
      resampled.push(p1);
      return resampled;
    }
    function pointEqual(a, b) {
      return Math.abs(a[0] - b[0]) < ε && Math.abs(a[1] - b[1]) < ε;
    }
    return projection;
  };
  function eckert4(λ, φ) {
    var k = (2 + halfπ) * Math.sin(φ);
    φ /= 2;
    for (var i = 0, δ = Infinity; i < 10 && Math.abs(δ) > ε; i++) {
      var cosφ = Math.cos(φ);
      φ -= δ = (φ + Math.sin(φ) * (cosφ + 2) - k) / (2 * cosφ * (1 + cosφ));
    }
    return [ 2 / Math.sqrt(π * (4 + π)) * λ * (1 + Math.cos(φ)), 2 * Math.sqrt(π / (4 + π)) * Math.sin(φ) ];
  }
  eckert4.invert = function(x, y) {
    var A = .5 * y * Math.sqrt((4 + π) / π), k = asin(A), c = Math.cos(k);
    return [ x / (2 / Math.sqrt(π * (4 + π)) * (1 + c)), asin((k + A * (c + 2)) / (2 + halfπ)) ];
  };
  (d3.geo.eckert4 = function() {
    return projection(eckert4);
  }).raw = eckert4;
  var hammerAzimuthalEqualArea = d3.geo.azimuthalEqualArea.raw;
  function hammer(A, B) {
    if (arguments.length < 2) B = A;
    if (B === 1) return hammerAzimuthalEqualArea;
    if (B === Infinity) return hammerQuarticAuthalic;
    function forward(λ, φ) {
      var coordinates = hammerAzimuthalEqualArea(λ / B, φ);
      coordinates[0] *= A;
      return coordinates;
    }
    forward.invert = function(x, y) {
      var coordinates = hammerAzimuthalEqualArea.invert(x / A, y);
      coordinates[0] *= B;
      return coordinates;
    };
    return forward;
  }
  function hammerProjection() {
    var B = 2, m = projectionMutator(hammer), p = m(B);
    p.coefficient = function(_) {
      if (!arguments.length) return B;
      return m(B = +_);
    };
    return p;
  }
  function hammerQuarticAuthalic(λ, φ) {
    return [ λ * Math.cos(φ) / Math.cos(φ /= 2), 2 * Math.sin(φ) ];
  }
  hammerQuarticAuthalic.invert = function(x, y) {
    var φ = 2 * asin(y / 2);
    return [ x * Math.cos(φ / 2) / Math.cos(φ), φ ];
  };
  (d3.geo.hammer = hammerProjection).raw = hammer;
  function kavrayskiy7(λ, φ) {
    return [ 3 * λ / (2 * π) * Math.sqrt(π * π / 3 - φ * φ), φ ];
  }
  kavrayskiy7.invert = function(x, y) {
    return [ 2 / 3 * π * x / Math.sqrt(π * π / 3 - y * y), y ];
  };
  (d3.geo.kavrayskiy7 = function() {
    return projection(kavrayskiy7);
  }).raw = kavrayskiy7;
  function miller(λ, φ) {
    return [ λ, 1.25 * Math.log(Math.tan(π / 4 + .4 * φ)) ];
  }
  miller.invert = function(x, y) {
    return [ x, 2.5 * Math.atan(Math.exp(.8 * y)) - .625 * π ];
  };
  (d3.geo.miller = function() {
    return projection(miller);
  }).raw = miller;
  function mollweideBromleyθ(Cp) {
    return function(θ) {
      var Cpsinθ = Cp * Math.sin(θ), i = 30, δ;
      do θ -= δ = (θ + Math.sin(θ) - Cpsinθ) / (1 + Math.cos(θ)); while (Math.abs(δ) > ε && --i > 0);
      return θ / 2;
    };
  }
  function mollweideBromley(Cx, Cy, Cp) {
    var θ = mollweideBromleyθ(Cp);
    function forward(λ, φ) {
      return [ Cx * λ * Math.cos(φ = θ(φ)), Cy * Math.sin(φ) ];
    }
    forward.invert = function(x, y) {
      var θ = asin(y / Cy);
      return [ x / (Cx * Math.cos(θ)), asin((2 * θ + Math.sin(2 * θ)) / Cp) ];
    };
    return forward;
  }
  var mollweideθ = mollweideBromleyθ(π), mollweide = mollweideBromley(Math.SQRT2 / halfπ, Math.SQRT2, π);
  (d3.geo.mollweide = function() {
    return projection(mollweide);
  }).raw = mollweide;
  function naturalEarth(λ, φ) {
    var φ2 = φ * φ, φ4 = φ2 * φ2;
    return [ λ * (.8707 - .131979 * φ2 + φ4 * (-.013791 + φ4 * (.003971 * φ2 - .001529 * φ4))), φ * (1.007226 + φ2 * (.015085 + φ4 * (-.044475 + .028874 * φ2 - .005916 * φ4))) ];
  }
  naturalEarth.invert = function(x, y) {
    var φ = y, i = 25, δ;
    do {
      var φ2 = φ * φ, φ4 = φ2 * φ2;
      φ -= δ = (φ * (1.007226 + φ2 * (.015085 + φ4 * (-.044475 + .028874 * φ2 - .005916 * φ4))) - y) / (1.007226 + φ2 * (.015085 * 3 + φ4 * (-.044475 * 7 + .028874 * 9 * φ2 - .005916 * 11 * φ4)));
    } while (Math.abs(δ) > ε && --i > 0);
    return [ x / (.8707 + (φ2 = φ * φ) * (-.131979 + φ2 * (-.013791 + φ2 * φ2 * φ2 * (.003971 - .001529 * φ2)))), φ ];
  };
  (d3.geo.naturalEarth = function() {
    return projection(naturalEarth);
  }).raw = naturalEarth;
  var robinsonConstants = [ [ .9986, -.062 ], [ 1, 0 ], [ .9986, .062 ], [ .9954, .124 ], [ .99, .186 ], [ .9822, .248 ], [ .973, .31 ], [ .96, .372 ], [ .9427, .434 ], [ .9216, .4958 ], [ .8962, .5571 ], [ .8679, .6176 ], [ .835, .6769 ], [ .7986, .7346 ], [ .7597, .7903 ], [ .7186, .8435 ], [ .6732, .8936 ], [ .6213, .9394 ], [ .5722, .9761 ], [ .5322, 1 ] ];
  robinsonConstants.forEach(function(d) {
    d[1] *= 1.0144;
  });
  function robinson(λ, φ) {
    var i = Math.min(18, Math.abs(φ) * 36 / π), i0 = Math.floor(i), di = i - i0, ax = (k = robinsonConstants[i0])[0], ay = k[1], bx = (k = robinsonConstants[++i0])[0], by = k[1], cx = (k = robinsonConstants[Math.min(19, ++i0)])[0], cy = k[1], k;
    return [ λ * (bx + di * (cx - ax) / 2 + di * di * (cx - 2 * bx + ax) / 2), (φ > 0 ? halfπ : -halfπ) * (by + di * (cy - ay) / 2 + di * di * (cy - 2 * by + ay) / 2) ];
  }
  robinson.invert = function(x, y) {
    var yy = y / halfπ, φ = yy * 90, i = Math.min(18, Math.abs(φ / 5)), i0 = Math.max(0, Math.floor(i));
    do {
      var ay = robinsonConstants[i0][1], by = robinsonConstants[i0 + 1][1], cy = robinsonConstants[Math.min(19, i0 + 2)][1], u = cy - ay, v = cy - 2 * by + ay, t = 2 * (Math.abs(yy) - by) / u, c = v / u, di = t * (1 - c * t * (1 - 2 * c * t));
      if (di >= 0 || i0 === 1) {
        φ = (y >= 0 ? 5 : -5) * (di + i);
        var j = 50, δ;
        do {
          i = Math.min(18, Math.abs(φ) / 5);
          i0 = Math.floor(i);
          di = i - i0;
          ay = robinsonConstants[i0][1];
          by = robinsonConstants[i0 + 1][1];
          cy = robinsonConstants[Math.min(19, i0 + 2)][1];
          φ -= (δ = (y >= 0 ? halfπ : -halfπ) * (by + di * (cy - ay) / 2 + di * di * (cy - 2 * by + ay) / 2) - y) * degrees;
        } while (Math.abs(δ) > ε2 && --j > 0);
        break;
      }
    } while (--i0 >= 0);
    var ax = robinsonConstants[i0][0], bx = robinsonConstants[i0 + 1][0], cx = robinsonConstants[Math.min(19, i0 + 2)][0];
    return [ x / (bx + di * (cx - ax) / 2 + di * di * (cx - 2 * bx + ax) / 2), φ * radians ];
  };
  (d3.geo.robinson = function() {
    return projection(robinson);
  }).raw = robinson;
  function sinusoidal(λ, φ) {
    return [ λ * Math.cos(φ), φ ];
  }
  sinusoidal.invert = function(x, y) {
    return [ x / Math.cos(y), y ];
  };
  (d3.geo.sinusoidal = function() {
    return projection(sinusoidal);
  }).raw = sinusoidal;
  function aitoff(λ, φ) {
    var cosφ = Math.cos(φ), sinciα = sinci(acos(cosφ * Math.cos(λ /= 2)));
    return [ 2 * cosφ * Math.sin(λ) * sinciα, Math.sin(φ) * sinciα ];
  }
  aitoff.invert = function(x, y) {
    if (x * x + 4 * y * y > π * π + ε) return;
    var λ = x, φ = y, i = 25;
    do {
      var sinλ = Math.sin(λ), sinλ_2 = Math.sin(λ / 2), cosλ_2 = Math.cos(λ / 2), sinφ = Math.sin(φ), cosφ = Math.cos(φ), sin_2φ = Math.sin(2 * φ), sin2φ = sinφ * sinφ, cos2φ = cosφ * cosφ, sin2λ_2 = sinλ_2 * sinλ_2, C = 1 - cos2φ * cosλ_2 * cosλ_2, E = C ? acos(cosφ * cosλ_2) * Math.sqrt(F = 1 / C) : F = 0, F, fx = 2 * E * cosφ * sinλ_2 - x, fy = E * sinφ - y, δxδλ = F * (cos2φ * sin2λ_2 + E * cosφ * cosλ_2 * sin2φ), δxδφ = F * (.5 * sinλ * sin_2φ - E * 2 * sinφ * sinλ_2), δyδλ = F * .25 * (sin_2φ * sinλ_2 - E * sinφ * cos2φ * sinλ), δyδφ = F * (sin2φ * cosλ_2 + E * sin2λ_2 * cosφ), denominator = δxδφ * δyδλ - δyδφ * δxδλ;
      if (!denominator) break;
      var δλ = (fy * δxδφ - fx * δyδφ) / denominator, δφ = (fx * δyδλ - fy * δxδλ) / denominator;
      λ -= δλ, φ -= δφ;
    } while ((Math.abs(δλ) > ε || Math.abs(δφ) > ε) && --i > 0);
    return [ λ, φ ];
  };
  (d3.geo.aitoff = function() {
    return projection(aitoff);
  }).raw = aitoff;
  function winkel3(λ, φ) {
    var coordinates = aitoff(λ, φ);
    return [ (coordinates[0] + λ / halfπ) / 2, (coordinates[1] + φ) / 2 ];
  }
  winkel3.invert = function(x, y) {
    var λ = x, φ = y, i = 25;
    do {
      var cosφ = Math.cos(φ), sinφ = Math.sin(φ), sin_2φ = Math.sin(2 * φ), sin2φ = sinφ * sinφ, cos2φ = cosφ * cosφ, sinλ = Math.sin(λ), cosλ_2 = Math.cos(λ / 2), sinλ_2 = Math.sin(λ / 2), sin2λ_2 = sinλ_2 * sinλ_2, C = 1 - cos2φ * cosλ_2 * cosλ_2, E = C ? acos(cosφ * cosλ_2) * Math.sqrt(F = 1 / C) : F = 0, F, fx = .5 * (2 * E * cosφ * sinλ_2 + λ / halfπ) - x, fy = .5 * (E * sinφ + φ) - y, δxδλ = .5 * F * (cos2φ * sin2λ_2 + E * cosφ * cosλ_2 * sin2φ) + .5 / halfπ, δxδφ = F * (sinλ * sin_2φ / 4 - E * sinφ * sinλ_2), δyδλ = .125 * F * (sin_2φ * sinλ_2 - E * sinφ * cos2φ * sinλ), δyδφ = .5 * F * (sin2φ * cosλ_2 + E * sin2λ_2 * cosφ) + .5, denominator = δxδφ * δyδλ - δyδφ * δxδλ, δλ = (fy * δxδφ - fx * δyδφ) / denominator, δφ = (fx * δyδλ - fy * δxδλ) / denominator;
      λ -= δλ, φ -= δφ;
    } while ((Math.abs(δλ) > ε || Math.abs(δφ) > ε) && --i > 0);
    return [ λ, φ ];
  };
  (d3.geo.winkel3 = function() {
    return projection(winkel3);
  }).raw = winkel3;
}

module.exports = addProjectionsToD3;

},{}],673:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var clipPad = require('./constants').clipPad;

function createGeoScale(geoLayout, graphSize) {
    var projLayout = geoLayout.projection,
        lonaxisLayout = geoLayout.lonaxis,
        lataxisLayout = geoLayout.lataxis,
        geoDomain = geoLayout.domain,
        frameWidth = geoLayout.framewidth || 0;

    // width & height the geo div
    var geoWidth = graphSize.w * (geoDomain.x[1] - geoDomain.x[0]),
        geoHeight = graphSize.h * (geoDomain.y[1] - geoDomain.y[0]);

    // add padding around range to avoid aliasing
    var lon0 = lonaxisLayout.range[0] + clipPad,
        lon1 = lonaxisLayout.range[1] - clipPad,
        lat0 = lataxisLayout.range[0] + clipPad,
        lat1 = lataxisLayout.range[1] - clipPad,
        lonfull0 = lonaxisLayout._fullRange[0] + clipPad,
        lonfull1 = lonaxisLayout._fullRange[1] - clipPad,
        latfull0 = lataxisLayout._fullRange[0] + clipPad,
        latfull1 = lataxisLayout._fullRange[1] - clipPad;

    // initial translation (makes the math easier)
    projLayout._translate0 = [
        graphSize.l + geoWidth / 2, graphSize.t + geoHeight / 2
    ];


    // center of the projection is given by
    // the lon/lat ranges and the rotate angle
    var dlon = lon1 - lon0,
        dlat = lat1 - lat0,
        c0 = [lon0 + dlon / 2, lat0 + dlat / 2],
        r = projLayout._rotate;

    projLayout._center = [c0[0] + r[0], c0[1] + r[1]];

    // needs a initial projection; it is called from makeProjection
    var setScale = function(projection) {
        var scale0 = projection.scale(),
            translate0 = projLayout._translate0,
            rangeBox = makeRangeBox(lon0, lat0, lon1, lat1),
            fullRangeBox = makeRangeBox(lonfull0, latfull0, lonfull1, latfull1);

        var scale, translate, bounds, fullBounds;

        // Inspired by: http://stackoverflow.com/a/14654988/4068492
        // using the path determine the bounds of the current map and use
        // these to determine better values for the scale and translation

        function getScale(bounds) {
            return Math.min(
                scale0 * geoWidth / (bounds[1][0] - bounds[0][0]),
                scale0 * geoHeight / (bounds[1][1] - bounds[0][1])
            );
        }

        // scale projection given how range box get deformed
        // by the projection
        bounds = getBounds(projection, rangeBox);
        scale = getScale(bounds);

        // similarly, get scale at full range
        fullBounds = getBounds(projection, fullRangeBox);
        projLayout._fullScale = getScale(fullBounds);

        projection.scale(scale);

        // translate the projection so that the top-left corner
        // of the range box is at the top-left corner of the viewbox
        bounds = getBounds(projection, rangeBox);
        translate = [
            translate0[0] - bounds[0][0] + frameWidth,
            translate0[1] - bounds[0][1] + frameWidth
        ];
        projLayout._translate = translate;
        projection.translate(translate);

        // clip regions out of the range box
        // (these are clipping along horizontal/vertical lines)
        bounds = getBounds(projection, rangeBox);
        if(!geoLayout._isAlbersUsa) projection.clipExtent(bounds);

        // adjust scale one more time with the 'scale' attribute
        scale = projLayout.scale * scale;

        // set projection scale and save it
        projLayout._scale = scale;

        // save the effective width & height of the geo framework
        geoLayout._width = Math.round(bounds[1][0]) + frameWidth;
        geoLayout._height = Math.round(bounds[1][1]) + frameWidth;

        // save the margin length induced by the map scaling
        geoLayout._marginX = (geoWidth - Math.round(bounds[1][0])) / 2;
        geoLayout._marginY = (geoHeight - Math.round(bounds[1][1])) / 2;
    };

    return setScale;
}

module.exports = createGeoScale;

// polygon GeoJSON corresponding to lon/lat range box
// with well-defined direction
function makeRangeBox(lon0, lat0, lon1, lat1) {
    var dlon4 = (lon1 - lon0) / 4;

    // TODO is this enough to handle ALL cases?
    // -- this makes scaling less precise than using d3.geo.graticule
    //    as great circles can overshoot the boundary
    //    (that's not a big deal I think)
    return {
        type: 'Polygon',
        coordinates: [
            [ [lon0, lat0],
            [lon0, lat1],
            [lon0 + dlon4, lat1],
            [lon0 + 2 * dlon4, lat1],
            [lon0 + 3 * dlon4, lat1],
            [lon1, lat1],
            [lon1, lat0],
            [lon1 - dlon4, lat0],
            [lon1 - 2 * dlon4, lat0],
            [lon1 - 3 * dlon4, lat0],
            [lon0, lat0] ]
        ]
    };
}

// bounds array [[top, left], [bottom, right]]
// of the lon/lat range box
function getBounds(projection, rangeBox) {
    return d3.geo.path().projection(projection).bounds(rangeBox);
}

},{"./constants":664,"d3":86}],674:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var radians = Math.PI / 180,
    degrees = 180 / Math.PI,
    zoomstartStyle = { cursor: 'pointer' },
    zoomendStyle = { cursor: 'auto' };


function createGeoZoom(geo, geoLayout) {
    var zoomConstructor;

    if(geoLayout._isScoped) zoomConstructor = zoomScoped;
    else if(geoLayout._clipAngle) zoomConstructor = zoomClipped;
    else zoomConstructor = zoomNonClipped;

    // TODO add a conic-specific zoom

    return zoomConstructor(geo, geoLayout.projection);
}

module.exports = createGeoZoom;

// common to all zoom types
function initZoom(projection, projLayout) {
    var fullScale = projLayout._fullScale;

    return d3.behavior.zoom()
        .translate(projection.translate())
        .scale(projection.scale())
        .scaleExtent([0.5 * fullScale, 100 * fullScale]);
}

// zoom for scoped projections
function zoomScoped(geo, projLayout) {
    var projection = geo.projection,
        zoom = initZoom(projection, projLayout);

    function handleZoomstart() {
        d3.select(this).style(zoomstartStyle);
    }

    function handleZoom() {
        projection
            .scale(d3.event.scale)
            .translate(d3.event.translate);

        geo.render();
    }

    function handleZoomend() {
        d3.select(this).style(zoomendStyle);
    }

    zoom
        .on('zoomstart', handleZoomstart)
        .on('zoom', handleZoom)
        .on('zoomend', handleZoomend);

    return zoom;
}

// zoom for non-clipped projections
function zoomNonClipped(geo, projLayout) {
    var projection = geo.projection,
        zoom = initZoom(projection, projLayout);

    var INSIDETOLORANCEPXS = 2;

    var mouse0, rotate0, translate0, lastRotate, zoomPoint,
        mouse1, rotate1, point1;

    function position(x) { return projection.invert(x); }

    function outside(x) {
        var pt = projection(position(x));
        return (Math.abs(pt[0] - x[0]) > INSIDETOLORANCEPXS ||
                Math.abs(pt[1] - x[1]) > INSIDETOLORANCEPXS);
    }

    function handleZoomstart() {
        d3.select(this).style(zoomstartStyle);

        mouse0 = d3.mouse(this);
        rotate0 = projection.rotate();
        translate0 = projection.translate();
        lastRotate = rotate0;
        zoomPoint = position(mouse0);
    }

    function handleZoom() {
        mouse1 = d3.mouse(this);

        if(outside(mouse0)) {
            zoom.scale(projection.scale());
            zoom.translate(projection.translate());
            return;
        }

        projection.scale(d3.event.scale);

        projection.translate([translate0[0], d3.event.translate[1]]);

        if(!zoomPoint) {
            mouse0 = mouse1;
            zoomPoint = position(mouse0);
        }
        else if(position(mouse1)) {
            point1 = position(mouse1);
            rotate1 = [lastRotate[0] + (point1[0] - zoomPoint[0]), rotate0[1], rotate0[2]];
            projection.rotate(rotate1);
            lastRotate = rotate1;
        }

        geo.render();
    }

    function handleZoomend() {
        d3.select(this).style(zoomendStyle);

        // or something like
        // http://www.jasondavies.com/maps/gilbert/
        // ... a little harder with multiple base layers
    }

    zoom
        .on('zoomstart', handleZoomstart)
        .on('zoom', handleZoom)
        .on('zoomend', handleZoomend);

    return zoom;
}

// zoom for clipped projections
// inspired by https://www.jasondavies.com/maps/d3.geo.zoom.js
function zoomClipped(geo, projLayout) {
    var projection = geo.projection,
        view = {r: projection.rotate(), k: projection.scale()},
        zoom = initZoom(projection, projLayout),
        event = d3_eventDispatch(zoom, 'zoomstart', 'zoom', 'zoomend'),
        zooming = 0,
        zoomOn = zoom.on;

    var zoomPoint;

    zoom.on('zoomstart', function() {
        d3.select(this).style(zoomstartStyle);

        var mouse0 = d3.mouse(this),
            rotate0 = projection.rotate(),
            lastRotate = rotate0,
            translate0 = projection.translate(),
            q = quaternionFromEuler(rotate0);

        zoomPoint = position(projection, mouse0);

        zoomOn.call(zoom, 'zoom', function() {
            var mouse1 = d3.mouse(this);

            projection.scale(view.k = d3.event.scale);

            if(!zoomPoint) {
                // if no zoomPoint, the mouse wasn't over the actual geography yet
                // maybe this point is the start... we'll find out next time!
                mouse0 = mouse1;
                zoomPoint = position(projection, mouse0);
            }
            // check if the point is on the map
            // if not, don't do anything new but scale
            // if it is, then we can assume between will exist below
            // so we don't need the 'bank' function, whatever that is.
            // TODO: is this right?
            else if(position(projection, mouse1)) {
                // go back to original projection temporarily
                // except for scale... that's kind of independent?
                projection
                    .rotate(rotate0)
                    .translate(translate0);

                // calculate the new params
                var point1 = position(projection, mouse1),
                    between = rotateBetween(zoomPoint, point1),
                    newEuler = eulerFromQuaternion(multiply(q, between)),
                    rotateAngles = view.r = unRoll(newEuler, zoomPoint, lastRotate);

                if(!isFinite(rotateAngles[0]) || !isFinite(rotateAngles[1]) ||
                   !isFinite(rotateAngles[2])) {
                    rotateAngles = lastRotate;
                }

                // update the projection
                projection.rotate(rotateAngles);
                lastRotate = rotateAngles;
            }

            zoomed(event.of(this, arguments));
        });

        zoomstarted(event.of(this, arguments));
    })
    .on('zoomend', function() {
        d3.select(this).style(zoomendStyle);
        zoomOn.call(zoom, 'zoom', null);
        zoomended(event.of(this, arguments));
    })
    .on('zoom.redraw', function() {
        geo.render();
    });

    function zoomstarted(dispatch) {
        if(!zooming++) dispatch({type: 'zoomstart'});
    }

    function zoomed(dispatch) {
        dispatch({type: 'zoom'});
    }

    function zoomended(dispatch) {
        if(!--zooming) dispatch({type: 'zoomend'});
    }

    return d3.rebind(zoom, event, 'on');
}

// -- helper functions for zoomClipped

function position(projection, point) {
    var spherical = projection.invert(point);
    return spherical && isFinite(spherical[0]) && isFinite(spherical[1]) && cartesian(spherical);
}

function quaternionFromEuler(euler) {
    var lambda = 0.5 * euler[0] * radians,
        phi = 0.5 * euler[1] * radians,
        gamma = 0.5 * euler[2] * radians,
        sinLambda = Math.sin(lambda), cosLambda = Math.cos(lambda),
        sinPhi = Math.sin(phi), cosPhi = Math.cos(phi),
        sinGamma = Math.sin(gamma), cosGamma = Math.cos(gamma);
    return [
        cosLambda * cosPhi * cosGamma + sinLambda * sinPhi * sinGamma,
        sinLambda * cosPhi * cosGamma - cosLambda * sinPhi * sinGamma,
        cosLambda * sinPhi * cosGamma + sinLambda * cosPhi * sinGamma,
        cosLambda * cosPhi * sinGamma - sinLambda * sinPhi * cosGamma
    ];
}

function multiply(a, b) {
    var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
        b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
    return [
        a0 * b0 - a1 * b1 - a2 * b2 - a3 * b3,
        a0 * b1 + a1 * b0 + a2 * b3 - a3 * b2,
        a0 * b2 - a1 * b3 + a2 * b0 + a3 * b1,
        a0 * b3 + a1 * b2 - a2 * b1 + a3 * b0
    ];
}

function rotateBetween(a, b) {
    if(!a || !b) return;
    var axis = cross(a, b),
        norm = Math.sqrt(dot(axis, axis)),
        halfgamma = 0.5 * Math.acos(Math.max(-1, Math.min(1, dot(a, b)))),
        k = Math.sin(halfgamma) / norm;
    return norm && [Math.cos(halfgamma), axis[2] * k, -axis[1] * k, axis[0] * k];
}

// input:
//   rotateAngles: a calculated set of Euler angles
//   pt: a point (cartesian in 3-space) to keep fixed
//   roll0: an initial roll, to be preserved
// output:
//   a set of Euler angles that preserve the projection of pt
//     but set roll (output[2]) equal to roll0
//     note that this doesn't depend on the particular projection,
//     just on the rotation angles
function unRoll(rotateAngles, pt, lastRotate) {
    // calculate the fixed point transformed by these Euler angles
    // but with the desired roll undone
    var ptRotated = rotateCartesian(pt, 2, rotateAngles[0]);
    ptRotated = rotateCartesian(ptRotated, 1, rotateAngles[1]);
    ptRotated = rotateCartesian(ptRotated, 0, rotateAngles[2] - lastRotate[2]);

    var x = pt[0],
        y = pt[1],
        z = pt[2],
        f = ptRotated[0],
        g = ptRotated[1],
        h = ptRotated[2],

        // the following essentially solves:
        // ptRotated = rotateCartesian(rotateCartesian(pt, 2, newYaw), 1, newPitch)
        // for newYaw and newPitch, as best it can
        theta = Math.atan2(y, x) * degrees,
        a = Math.sqrt(x * x + y * y),
        b,
        newYaw1;

    if(Math.abs(g) > a) {
        newYaw1 = (g > 0 ? 90 : -90) - theta;
        b = 0;
    } else {
        newYaw1 = Math.asin(g / a) * degrees - theta;
        b = Math.sqrt(a * a - g * g);
    }

    var newYaw2 = 180 - newYaw1 - 2 * theta,
        newPitch1 = (Math.atan2(h, f) - Math.atan2(z, b)) * degrees,
        newPitch2 = (Math.atan2(h, f) - Math.atan2(z, -b)) * degrees;

    // which is closest to lastRotate[0,1]: newYaw/Pitch or newYaw2/Pitch2?
    var dist1 = angleDistance(lastRotate[0], lastRotate[1], newYaw1, newPitch1),
        dist2 = angleDistance(lastRotate[0], lastRotate[1], newYaw2, newPitch2);

    if(dist1 <= dist2) return [newYaw1, newPitch1, lastRotate[2]];
    else return [newYaw2, newPitch2, lastRotate[2]];
}

function angleDistance(yaw0, pitch0, yaw1, pitch1) {
    var dYaw = angleMod(yaw1 - yaw0),
        dPitch = angleMod(pitch1 - pitch0);
    return Math.sqrt(dYaw * dYaw + dPitch * dPitch);
}

// reduce an angle in degrees to [-180,180]
function angleMod(angle) {
    return (angle % 360 + 540) % 360 - 180;
}

// rotate a cartesian vector
// axis is 0 (x), 1 (y), or 2 (z)
// angle is in degrees
function rotateCartesian(vector, axis, angle) {
    var angleRads = angle * radians,
        vectorOut = vector.slice(),
        ax1 = (axis === 0) ? 1 : 0,
        ax2 = (axis === 2) ? 1 : 2,
        cosa = Math.cos(angleRads),
        sina = Math.sin(angleRads);

    vectorOut[ax1] = vector[ax1] * cosa - vector[ax2] * sina;
    vectorOut[ax2] = vector[ax2] * cosa + vector[ax1] * sina;

    return vectorOut;
}
function eulerFromQuaternion(q) {
    return [
        Math.atan2(2 * (q[0] * q[1] + q[2] * q[3]), 1 - 2 * (q[1] * q[1] + q[2] * q[2])) * degrees,
        Math.asin(Math.max(-1, Math.min(1, 2 * (q[0] * q[2] - q[3] * q[1])))) * degrees,
        Math.atan2(2 * (q[0] * q[3] + q[1] * q[2]), 1 - 2 * (q[2] * q[2] + q[3] * q[3])) * degrees
    ];
}

function cartesian(spherical) {
    var lambda = spherical[0] * radians,
        phi = spherical[1] * radians,
        cosPhi = Math.cos(phi);
    return [
        cosPhi * Math.cos(lambda),
        cosPhi * Math.sin(lambda),
        Math.sin(phi)
    ];
}

function dot(a, b) {
    var s = 0;
    for(var i = 0, n = a.length; i < n; ++i) s += a[i] * b[i];
    return s;
}

function cross(a, b) {
    return [
        a[1] * b[2] - a[2] * b[1],
        a[2] * b[0] - a[0] * b[2],
        a[0] * b[1] - a[1] * b[0]
    ];
}

// Like d3.dispatch, but for custom events abstracting native UI events. These
// events have a target component (such as a brush), a target element (such as
// the svg:g element containing the brush) and the standard arguments `d` (the
// target element's data) and `i` (the selection index of the target element).
function d3_eventDispatch(target) {
    var i = 0,
        n = arguments.length,
        argumentz = [];

    while(++i < n) argumentz.push(arguments[i]);

    var dispatch = d3.dispatch.apply(null, argumentz);

    // Creates a dispatch context for the specified `thiz` (typically, the target
    // DOM element that received the source event) and `argumentz` (typically, the
    // data `d` and index `i` of the target element). The returned function can be
    // used to dispatch an event to any registered listeners; the function takes a
    // single argument as input, being the event to dispatch. The event must have
    // a "type" attribute which corresponds to a type registered in the
    // constructor. This context will automatically populate the "sourceEvent" and
    // "target" attributes of the event, as well as setting the `d3.event` global
    // for the duration of the notification.
    dispatch.of = function(thiz, argumentz) {
        return function(e1) {
            var e0;
            try {
                e0 = e1.sourceEvent = d3.event;
                e1.target = target;
                d3.event = e1;
                dispatch[e1.type].apply(thiz, argumentz);
            } finally {
                d3.event = e0;
            }
        };
    };

    return dispatch;
}

},{"d3":86}],675:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Fx = require('../cartesian/graph_interact');

function createGeoZoomReset(geo, geoLayout) {
    var projection = geo.projection,
        zoom = geo.zoom;

    var zoomReset = function() {
        geo.makeProjection(geoLayout);
        geo.makePath();

        zoom.scale(projection.scale());
        zoom.translate(projection.translate());

        Fx.loneUnhover(geo.hoverContainer);

        geo.render();
    };

    return zoomReset;
}

module.exports = createGeoZoomReset;

},{"../cartesian/graph_interact":649}],676:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var mouseChange = require('mouse-change');
var mouseWheel = require('mouse-wheel');

module.exports = createCamera;

function Camera2D(element, plot) {
    this.element = element;
    this.plot = plot;
    this.mouseListener = null;
    this.wheelListener = null;
    this.lastInputTime = Date.now();
    this.lastPos = [0, 0];
    this.boxEnabled = false;
    this.boxStart = [0, 0];
    this.boxEnd = [0, 0];
}


function createCamera(scene) {
    var element = scene.mouseContainer,
        plot = scene.glplot,
        result = new Camera2D(element, plot);

    function unSetAutoRange() {
        scene.xaxis.autorange = false;
        scene.yaxis.autorange = false;
    }

    result.mouseListener = mouseChange(element, function(buttons, x, y) {
        var dataBox = scene.calcDataBox(),
            viewBox = plot.viewBox;

        var lastX = result.lastPos[0],
            lastY = result.lastPos[1];

        x *= plot.pixelRatio;
        y *= plot.pixelRatio;

        // mouseChange gives y about top; convert to about bottom
        y = (viewBox[3] - viewBox[1]) - y;

        function updateRange(i0, start, end) {
            var range0 = Math.min(start, end),
                range1 = Math.max(start, end);

            if(range0 !== range1) {
                dataBox[i0] = range0;
                dataBox[i0 + 2] = range1;
                result.dataBox = dataBox;
                scene.setRanges(dataBox);
            }
            else {
                scene.selectBox.selectBox = [0, 0, 1, 1];
                scene.glplot.setDirty();
            }
        }

        switch(scene.fullLayout.dragmode) {
            case 'zoom':
                if(buttons) {
                    var dataX = x /
                            (viewBox[2] - viewBox[0]) * (dataBox[2] - dataBox[0]) +
                        dataBox[0];
                    var dataY = y /
                            (viewBox[3] - viewBox[1]) * (dataBox[3] - dataBox[1]) +
                        dataBox[1];

                    if(!result.boxEnabled) {
                        result.boxStart[0] = dataX;
                        result.boxStart[1] = dataY;
                    }

                    result.boxEnd[0] = dataX;
                    result.boxEnd[1] = dataY;

                    result.boxEnabled = true;
                }
                else if(result.boxEnabled) {
                    updateRange(0, result.boxStart[0], result.boxEnd[0]);
                    updateRange(1, result.boxStart[1], result.boxEnd[1]);
                    unSetAutoRange();
                    result.boxEnabled = false;
                }
                break;

            case 'pan':
                result.boxEnabled = false;

                if(buttons) {
                    var dx = (lastX - x) * (dataBox[2] - dataBox[0]) /
                        (plot.viewBox[2] - plot.viewBox[0]);
                    var dy = (lastY - y) * (dataBox[3] - dataBox[1]) /
                        (plot.viewBox[3] - plot.viewBox[1]);

                    dataBox[0] += dx;
                    dataBox[2] += dx;
                    dataBox[1] += dy;
                    dataBox[3] += dy;

                    scene.setRanges(dataBox);

                    result.lastInputTime = Date.now();
                    unSetAutoRange();
                    scene.cameraChanged();
                }
                break;
        }

        result.lastPos[0] = x;
        result.lastPos[1] = y;
    });

    result.wheelListener = mouseWheel(element, function(dx, dy) {
        var dataBox = scene.calcDataBox(),
            viewBox = plot.viewBox;

        var lastX = result.lastPos[0],
            lastY = result.lastPos[1];

        switch(scene.fullLayout.dragmode) {
            case 'zoom':
                break;

            case 'pan':
                var scale = Math.exp(0.1 * dy / (viewBox[3] - viewBox[1]));

                var cx = lastX /
                        (viewBox[2] - viewBox[0]) * (dataBox[2] - dataBox[0]) +
                    dataBox[0];
                var cy = lastY /
                        (viewBox[3] - viewBox[1]) * (dataBox[3] - dataBox[1]) +
                    dataBox[1];

                dataBox[0] = (dataBox[0] - cx) * scale + cx;
                dataBox[2] = (dataBox[2] - cx) * scale + cx;
                dataBox[1] = (dataBox[1] - cy) * scale + cy;
                dataBox[3] = (dataBox[3] - cy) * scale + cy;

                scene.setRanges(dataBox);

                result.lastInputTime = Date.now();
                unSetAutoRange();
                scene.cameraChanged();
                break;
        }

        return true;
    });

    return result;
}

},{"mouse-change":428,"mouse-wheel":431}],677:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plots = require('../plots');
var Axes = require('../cartesian/axes');

var convertHTMLToUnicode = require('../../lib/html2unicode');
var str2RGBArray = require('../../lib/str2rgbarray');

function Axes2DOptions(scene) {
    this.scene = scene;
    this.gl = scene.gl;
    this.pixelRatio = scene.pixelRatio;

    this.screenBox = [0, 0, 1, 1];
    this.viewBox = [0, 0, 1, 1];
    this.dataBox = [-1, -1, 1, 1];

    this.borderLineEnable = [false, false, false, false];
    this.borderLineWidth = [1, 1, 1, 1];
    this.borderLineColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.ticks = [[], []];
    this.tickEnable = [true, true, false, false];
    this.tickPad = [15, 15, 15, 15];
    this.tickAngle = [0, 0, 0, 0];
    this.tickColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];
    this.tickMarkLength = [0, 0, 0, 0];
    this.tickMarkWidth = [0, 0, 0, 0];
    this.tickMarkColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.labels = ['x', 'y'];
    this.labelEnable = [true, true, false, false];
    this.labelAngle = [0, Math.PI / 2, 0, 3.0 * Math.PI / 2];
    this.labelPad = [15, 15, 15, 15];
    this.labelSize = [12, 12];
    this.labelFont = ['sans-serif', 'sans-serif'];
    this.labelColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.title = '';
    this.titleEnable = true;
    this.titleCenter = [0, 0, 0, 0];
    this.titleAngle = 0;
    this.titleColor = [0, 0, 0, 1];
    this.titleFont = 'sans-serif';
    this.titleSize = 18;

    this.gridLineEnable = [true, true];
    this.gridLineColor = [
        [0, 0, 0, 0.5],
        [0, 0, 0, 0.5]
    ];
    this.gridLineWidth = [1, 1];

    this.zeroLineEnable = [true, true];
    this.zeroLineWidth = [1, 1];
    this.zeroLineColor = [
        [0, 0, 0, 1],
        [0, 0, 0, 1]
    ];

    this.borderColor = [0, 0, 0, 0];
    this.backgroundColor = [0, 0, 0, 0];

    this.static = this.scene.staticPlot;
}

var proto = Axes2DOptions.prototype;

var AXES = ['xaxis', 'yaxis'];

proto.merge = function(options) {

    // titles are rendered in SVG
    this.titleEnable = false;
    this.backgroundColor = str2RGBArray(options.plot_bgcolor);

    var axisName, ax, axTitle, axMirror;
    var hasAxisInDfltPos, hasAxisInAltrPos, hasSharedAxis, mirrorLines, mirrorTicks;
    var i, j;

    for(i = 0; i < 2; ++i) {
        axisName = AXES[i];

        // get options relevant to this subplot,
        // '_name' is e.g. xaxis, xaxis2, yaxis, yaxis4 ...
        ax = options[this.scene[axisName]._name];

        axTitle = /Click to enter .+ title/.test(ax.title) ? '' : ax.title;

        for(j = 0; j <= 2; j += 2) {
            this.labelEnable[i + j] = false;
            this.labels[i + j] = convertHTMLToUnicode(axTitle);
            this.labelColor[i + j] = str2RGBArray(ax.titlefont.color);
            this.labelFont[i + j] = ax.titlefont.family;
            this.labelSize[i + j] = ax.titlefont.size;
            this.labelPad[i + j] = this.getLabelPad(axisName, ax);

            this.tickEnable[i + j] = false;
            this.tickColor[i + j] = str2RGBArray((ax.tickfont || {}).color);
            this.tickAngle[i + j] = (ax.tickangle === 'auto') ?
                0 :
                Math.PI * -ax.tickangle / 180;
            this.tickPad[i + j] = this.getTickPad(ax);

            this.tickMarkLength[i + j] = 0;
            this.tickMarkWidth[i + j] = ax.tickwidth || 0;
            this.tickMarkColor[i + j] = str2RGBArray(ax.tickcolor);

            this.borderLineEnable[i + j] = false;
            this.borderLineColor[i + j] = str2RGBArray(ax.linecolor);
            this.borderLineWidth[i + j] = ax.linewidth || 0;
        }

        hasSharedAxis = this.hasSharedAxis(ax);
        hasAxisInDfltPos = this.hasAxisInDfltPos(axisName, ax) && !hasSharedAxis;
        hasAxisInAltrPos = this.hasAxisInAltrPos(axisName, ax) && !hasSharedAxis;

        axMirror = ax.mirror || false;
        mirrorLines = hasSharedAxis ?
            (String(axMirror).indexOf('all') !== -1) :  // 'all' or 'allticks'
            !!axMirror;                                 // all but false
        mirrorTicks = hasSharedAxis ?
            (axMirror === 'allticks') :
            (String(axMirror).indexOf('ticks') !== -1); // 'ticks' or 'allticks'

        // Axis titles and tick labels can only appear of one side of the scene
        //  and are never show on subplots that share existing axes.

        if(hasAxisInDfltPos) this.labelEnable[i] = true;
        else if(hasAxisInAltrPos) this.labelEnable[i + 2] = true;

        if(hasAxisInDfltPos) this.tickEnable[i] = ax.showticklabels;
        else if(hasAxisInAltrPos) this.tickEnable[i + 2] = ax.showticklabels;

        // Grid lines and ticks can appear on both sides of the scene
        //  and can appear on subplot that share existing axes via `ax.mirror`.

        if(hasAxisInDfltPos || mirrorLines) this.borderLineEnable[i] = ax.showline;
        if(hasAxisInAltrPos || mirrorLines) this.borderLineEnable[i + 2] = ax.showline;

        if(hasAxisInDfltPos || mirrorTicks) this.tickMarkLength[i] = this.getTickMarkLength(ax);
        if(hasAxisInAltrPos || mirrorTicks) this.tickMarkLength[i + 2] = this.getTickMarkLength(ax);

        this.gridLineEnable[i] = ax.showgrid;
        this.gridLineColor[i] = str2RGBArray(ax.gridcolor);
        this.gridLineWidth[i] = ax.gridwidth;

        this.zeroLineEnable[i] = ax.zeroline;
        this.zeroLineColor[i] = str2RGBArray(ax.zerolinecolor);
        this.zeroLineWidth[i] = ax.zerolinewidth;
    }
};

// is an axis shared with an already-drawn subplot ?
proto.hasSharedAxis = function(ax) {
    var scene = this.scene,
        subplotIds = Plots.getSubplotIds(scene.fullLayout, 'gl2d'),
        list = Axes.findSubplotsWithAxis(subplotIds, ax);

    // if index === 0, then the subplot is already drawn as subplots
    // are drawn in order.
    return (list.indexOf(scene.id) !== 0);
};

// has an axis in default position (i.e. bottom/left) ?
proto.hasAxisInDfltPos = function(axisName, ax) {
    var axSide = ax.side;

    if(axisName === 'xaxis') return (axSide === 'bottom');
    else if(axisName === 'yaxis') return (axSide === 'left');
};

// has an axis in alternate position (i.e. top/right) ?
proto.hasAxisInAltrPos = function(axisName, ax) {
    var axSide = ax.side;

    if(axisName === 'xaxis') return (axSide === 'top');
    else if(axisName === 'yaxis') return (axSide === 'right');
};

proto.getLabelPad = function(axisName, ax) {
    var offsetBase = 1.5,
        fontSize = ax.titlefont.size,
        showticklabels = ax.showticklabels;

    if(axisName === 'xaxis') {
        return (ax.side === 'top') ?
            -10 + fontSize * (offsetBase + (showticklabels ? 1 : 0)) :
            -10 + fontSize * (offsetBase + (showticklabels ? 0.5 : 0));
    }
    else if(axisName === 'yaxis') {
        return (ax.side === 'right') ?
            10 + fontSize * (offsetBase + (showticklabels ? 1 : 0.5)) :
            10 + fontSize * (offsetBase + (showticklabels ? 0.5 : 0));
    }
};

proto.getTickPad = function(ax) {
    return (ax.ticks === 'outside') ? 10 + ax.ticklen : 15;
};

proto.getTickMarkLength = function(ax) {
    if(!ax.ticks) return 0;

    var ticklen = ax.ticklen;

    return (ax.ticks === 'inside') ? -ticklen : ticklen;
};


function createAxes2D(scene) {
    return new Axes2DOptions(scene);
}

module.exports = createAxes2D;

},{"../../lib/html2unicode":609,"../../lib/str2rgbarray":624,"../cartesian/axes":642,"../plots":702}],678:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Scene2D = require('./scene2d');
var Plots = require('../plots');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');


exports.name = 'gl2d';

exports.attr = ['xaxis', 'yaxis'];

exports.idRoot = ['x', 'y'];

exports.idRegex = {
    x: /^x([2-9]|[1-9][0-9]+)?$/,
    y: /^y([2-9]|[1-9][0-9]+)?$/
};

exports.attrRegex = {
    x: /^xaxis([2-9]|[1-9][0-9]+)?$/,
    y: /^yaxis([2-9]|[1-9][0-9]+)?$/
};

exports.attributes = require('../cartesian/attributes');

exports.plot = function plotGl2d(gd) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData,
        subplotIds = Plots.getSubplotIds(fullLayout, 'gl2d');

    for(var i = 0; i < subplotIds.length; i++) {
        var subplotId = subplotIds[i],
            subplotObj = fullLayout._plots[subplotId],
            fullSubplotData = Plots.getSubplotData(fullData, 'gl2d', subplotId);

        // ref. to corresp. Scene instance
        var scene = subplotObj._scene2d;

        // If Scene is not instantiated, create one!
        if(scene === undefined) {
            scene = new Scene2D({
                id: subplotId,
                graphDiv: gd,
                container: gd.querySelector('.gl-container'),
                staticPlot: gd._context.staticPlot,
                plotGlPixelRatio: gd._context.plotGlPixelRatio
            },
                fullLayout
            );

            // set ref to Scene instance
            subplotObj._scene2d = scene;
        }

        scene.plot(fullSubplotData, gd.calcdata, fullLayout, gd.layout);
    }
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldSceneKeys = Plots.getSubplotIds(oldFullLayout, 'gl2d');

    for(var i = 0; i < oldSceneKeys.length; i++) {
        var id = oldSceneKeys[i],
            oldSubplot = oldFullLayout._plots[id];

        // old subplot wasn't gl2d; nothing to do
        if(!oldSubplot._scene2d) continue;

        // if no traces are present, delete gl2d subplot
        var subplotData = Plots.getSubplotData(newFullData, 'gl2d', id);
        if(subplotData.length === 0) {
            oldSubplot._scene2d.destroy();
            delete oldFullLayout._plots[id];
        }
    }
};

exports.toSVG = function(gd) {
    var fullLayout = gd._fullLayout,
        subplotIds = Plots.getSubplotIds(fullLayout, 'gl2d');

    for(var i = 0; i < subplotIds.length; i++) {
        var subplot = fullLayout._plots[subplotIds[i]],
            scene = subplot._scene2d;

        var imageData = scene.toImage('png');
        var image = fullLayout._glimages.append('svg:image');

        image.attr({
            xmlns: xmlnsNamespaces.svg,
            'xlink:href': imageData,
            x: 0,
            y: 0,
            width: '100%',
            height: '100%',
            preserveAspectRatio: 'none'
        });

        scene.destroy();
    }
};

},{"../../constants/xmlns_namespaces":595,"../cartesian/attributes":641,"../plots":702,"./scene2d":679}],679:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Axes = require('../../plots/cartesian/axes');
var Fx = require('../../plots/cartesian/graph_interact');

var createPlot2D = require('gl-plot2d');
var createSpikes = require('gl-spikes2d');
var createSelectBox = require('gl-select-box');
var getContext = require('webgl-context');

var createOptions = require('./convert');
var createCamera = require('./camera');
var convertHTMLToUnicode = require('../../lib/html2unicode');
var showNoWebGlMsg = require('../../lib/show_no_webgl_msg');

var AXES = ['xaxis', 'yaxis'];
var STATIC_CANVAS, STATIC_CONTEXT;


function Scene2D(options, fullLayout) {
    this.container = options.container;
    this.graphDiv = options.graphDiv;
    this.pixelRatio = options.plotGlPixelRatio || window.devicePixelRatio;
    this.id = options.id;
    this.staticPlot = !!options.staticPlot;

    this.fullLayout = fullLayout;
    this.fullData = null;
    this.updateAxes(fullLayout);

    this.makeFramework();

    // update options
    this.glplotOptions = createOptions(this);
    this.glplotOptions.merge(fullLayout);

    // create the plot
    this.glplot = createPlot2D(this.glplotOptions);

    // create camera
    this.camera = createCamera(this);

    // trace set
    this.traces = {};
    this._inputs = {};

    // create axes spikes
    this.spikes = createSpikes(this.glplot);

    this.selectBox = createSelectBox(this.glplot, {
        innerFill: false,
        outerFill: true
    });

    // last button state
    this.lastButtonState = 0;

    // last pick result
    this.pickResult = null;

    this.bounds = [Infinity, Infinity, -Infinity, -Infinity];

    // flag to stop render loop
    this.stopped = false;

    // redraw the plot
    this.redraw = this.draw.bind(this);
    this.redraw();
}

module.exports = Scene2D;

var proto = Scene2D.prototype;

proto.makeFramework = function() {

    // create canvas and gl context
    if(this.staticPlot) {
        if(!STATIC_CONTEXT) {
            STATIC_CANVAS = document.createElement('canvas');

            STATIC_CONTEXT = getContext({
                canvas: STATIC_CANVAS,
                preserveDrawingBuffer: false,
                premultipliedAlpha: true,
                antialias: true
            });

            if(!STATIC_CONTEXT) {
                throw new Error('Error creating static canvas/context for image server');
            }
        }

        this.canvas = STATIC_CANVAS;
        this.gl = STATIC_CONTEXT;
    }
    else {
        var liveCanvas = document.createElement('canvas');

        var gl = getContext({
            canvas: liveCanvas,
            premultipliedAlpha: true
        });

        if(!gl) showNoWebGlMsg(this);

        this.canvas = liveCanvas;
        this.gl = gl;
    }

    // position the canvas
    var canvas = this.canvas;

    canvas.style.width = '100%';
    canvas.style.height = '100%';
    canvas.style.position = 'absolute';
    canvas.style.top = '0px';
    canvas.style.left = '0px';
    canvas.style['pointer-events'] = 'none';

    this.updateSize(canvas);

    // disabling user select on the canvas
    // sanitizes double-clicks interactions
    // ref: https://github.com/plotly/plotly.js/issues/744
    canvas.className += 'user-select-none';

    // create SVG container for hover text
    var svgContainer = this.svgContainer = document.createElementNS(
        'http://www.w3.org/2000/svg',
        'svg');
    svgContainer.style.position = 'absolute';
    svgContainer.style.top = svgContainer.style.left = '0px';
    svgContainer.style.width = svgContainer.style.height = '100%';
    svgContainer.style['z-index'] = 20;
    svgContainer.style['pointer-events'] = 'none';

    // create div to catch the mouse event
    var mouseContainer = this.mouseContainer = document.createElement('div');
    mouseContainer.style.position = 'absolute';

    // append canvas, hover svg and mouse div to container
    var container = this.container;
    container.appendChild(canvas);
    container.appendChild(svgContainer);
    container.appendChild(mouseContainer);
};

proto.toImage = function(format) {
    if(!format) format = 'png';

    this.stopped = true;
    if(this.staticPlot) this.container.appendChild(STATIC_CANVAS);

    // update canvas size
    this.updateSize(this.canvas);

    // force redraw
    this.glplot.setDirty();
    this.glplot.draw();

    // grab context and yank out pixels
    var gl = this.glplot.gl,
        w = gl.drawingBufferWidth,
        h = gl.drawingBufferHeight;

    gl.bindFramebuffer(gl.FRAMEBUFFER, null);

    var pixels = new Uint8Array(w * h * 4);
    gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, pixels);

    // flip pixels
    for(var j = 0, k = h - 1; j < k; ++j, --k) {
        for(var i = 0; i < w; ++i) {
            for(var l = 0; l < 4; ++l) {
                var tmp = pixels[4 * (w * j + i) + l];
                pixels[4 * (w * j + i) + l] = pixels[4 * (w * k + i) + l];
                pixels[4 * (w * k + i) + l] = tmp;
            }
        }
    }

    var canvas = document.createElement('canvas');
    canvas.width = w;
    canvas.height = h;

    var context = canvas.getContext('2d');
    var imageData = context.createImageData(w, h);
    imageData.data.set(pixels);
    context.putImageData(imageData, 0, 0);

    var dataURL;

    switch(format) {
        case 'jpeg':
            dataURL = canvas.toDataURL('image/jpeg');
            break;
        case 'webp':
            dataURL = canvas.toDataURL('image/webp');
            break;
        default:
            dataURL = canvas.toDataURL('image/png');
    }

    if(this.staticPlot) this.container.removeChild(STATIC_CANVAS);

    return dataURL;
};

proto.updateSize = function(canvas) {
    if(!canvas) canvas = this.canvas;

    var pixelRatio = this.pixelRatio,
        fullLayout = this.fullLayout;

    var width = fullLayout.width,
        height = fullLayout.height,
        pixelWidth = Math.ceil(pixelRatio * width) |0,
        pixelHeight = Math.ceil(pixelRatio * height) |0;

    // check for resize
    if(canvas.width !== pixelWidth || canvas.height !== pixelHeight) {
        canvas.width = pixelWidth;
        canvas.height = pixelHeight;
    }

    return canvas;
};

proto.computeTickMarks = function() {
    this.xaxis._length =
        this.glplot.viewBox[2] - this.glplot.viewBox[0];
    this.yaxis._length =
        this.glplot.viewBox[3] - this.glplot.viewBox[1];

    var nextTicks = [
        Axes.calcTicks(this.xaxis),
        Axes.calcTicks(this.yaxis)
    ];

    for(var j = 0; j < 2; ++j) {
        for(var i = 0; i < nextTicks[j].length; ++i) {
            // coercing tick value (may not be a string) to a string
            nextTicks[j][i].text = convertHTMLToUnicode(nextTicks[j][i].text + '');
        }
    }

    return nextTicks;
};

function compareTicks(a, b) {
    for(var i = 0; i < 2; ++i) {
        var aticks = a[i],
            bticks = b[i];

        if(aticks.length !== bticks.length) return true;

        for(var j = 0; j < aticks.length; ++j) {
            if(aticks[j].x !== bticks[j].x) return true;
        }
    }

    return false;
}

proto.updateAxes = function(options) {
    var spmatch = Axes.subplotMatch,
        xaxisName = 'xaxis' + this.id.match(spmatch)[1],
        yaxisName = 'yaxis' + this.id.match(spmatch)[2];

    this.xaxis = options[xaxisName];
    this.yaxis = options[yaxisName];
};

proto.updateFx = function(options) {
    var fullLayout = this.fullLayout;

    fullLayout.dragmode = options.dragmode;
    fullLayout.hovermode = options.hovermode;
};

var relayoutCallback = function(scene) {

    var xrange = scene.xaxis.range,
        yrange = scene.yaxis.range;

    // Update the layout on the DIV
    scene.graphDiv.layout.xaxis.autorange = scene.xaxis.autorange;
    scene.graphDiv.layout.xaxis.range = xrange.slice(0);
    scene.graphDiv.layout.yaxis.autorange = scene.yaxis.autorange;
    scene.graphDiv.layout.yaxis.range = yrange.slice(0);

    // Make a meaningful value to be passed on to the possible 'plotly_relayout' subscriber(s)
    var update = { // scene.camera has no many useful projection or scale information
        lastInputTime: scene.camera.lastInputTime // helps determine which one is the latest input (if async)
    };
    update[scene.xaxis._name] = xrange.slice();
    update[scene.yaxis._name] = yrange.slice();

    scene.graphDiv.emit('plotly_relayout', update);
};

proto.cameraChanged = function() {
    var camera = this.camera;

    this.glplot.setDataBox(this.calcDataBox());

    var nextTicks = this.computeTickMarks();
    var curTicks = this.glplotOptions.ticks;

    if(compareTicks(nextTicks, curTicks)) {
        this.glplotOptions.ticks = nextTicks;
        this.glplotOptions.dataBox = camera.dataBox;
        this.glplot.update(this.glplotOptions);
        relayoutCallback(this);
    }
};

proto.destroy = function() {
    var traces = this.traces;

    if(traces) {
        Object.keys(traces).map(function(key) {
            traces[key].dispose();
            delete traces[key];
        });
    }

    this.glplot.dispose();

    if(!this.staticPlot) this.container.removeChild(this.canvas);
    this.container.removeChild(this.svgContainer);
    this.container.removeChild(this.mouseContainer);

    this.fullData = null;
    this._inputs = null;
    this.glplot = null;
    this.stopped = true;
};

proto.plot = function(fullData, calcData, fullLayout) {
    var glplot = this.glplot;

    this.fullLayout = fullLayout;
    this.updateAxes(fullLayout);
    this.updateTraces(fullData, calcData);

    var width = fullLayout.width,
        height = fullLayout.height;

    this.updateSize(this.canvas);

    var options = this.glplotOptions;
    options.merge(fullLayout);
    options.screenBox = [0, 0, width, height];

    var size = fullLayout._size,
        domainX = this.xaxis.domain,
        domainY = this.yaxis.domain;

    options.viewBox = [
        size.l + domainX[0] * size.w,
        size.b + domainY[0] * size.h,
        (width - size.r) - (1 - domainX[1]) * size.w,
        (height - size.t) - (1 - domainY[1]) * size.h
    ];

    this.mouseContainer.style.width = size.w * (domainX[1] - domainX[0]) + 'px';
    this.mouseContainer.style.height = size.h * (domainY[1] - domainY[0]) + 'px';
    this.mouseContainer.height = size.h * (domainY[1] - domainY[0]);
    this.mouseContainer.style.left = size.l + domainX[0] * size.w + 'px';
    this.mouseContainer.style.top = size.t + (1 - domainY[1]) * size.h + 'px';

    var bounds = this.bounds;
    bounds[0] = bounds[1] = Infinity;
    bounds[2] = bounds[3] = -Infinity;

    var traceIds = Object.keys(this.traces);
    var ax, i;

    for(i = 0; i < traceIds.length; ++i) {
        var traceObj = this.traces[traceIds[i]];

        for(var k = 0; k < 2; ++k) {
            bounds[k] = Math.min(bounds[k], traceObj.bounds[k]);
            bounds[k + 2] = Math.max(bounds[k + 2], traceObj.bounds[k + 2]);
        }
    }

    for(i = 0; i < 2; ++i) {
        if(bounds[i] > bounds[i + 2]) {
            bounds[i] = -1;
            bounds[i + 2] = 1;
        }

        ax = this[AXES[i]];
        ax._length = options.viewBox[i + 2] - options.viewBox[i];

        Axes.doAutoRange(ax);
    }

    options.ticks = this.computeTickMarks();

    options.dataBox = this.calcDataBox();

    options.merge(fullLayout);
    glplot.update(options);

    // force redraw so that promise is returned when rendering is completed
    this.glplot.draw();
};

proto.calcDataBox = function() {
    var xaxis = this.xaxis,
        yaxis = this.yaxis,
        xrange = xaxis.range,
        yrange = yaxis.range,
        xr2l = xaxis.r2l,
        yr2l = yaxis.r2l;

    return [xr2l(xrange[0]), yr2l(yrange[0]), xr2l(xrange[1]), yr2l(yrange[1])];
};

proto.setRanges = function(dataBox) {
    var xaxis = this.xaxis,
        yaxis = this.yaxis,
        xl2r = xaxis.l2r,
        yl2r = yaxis.l2r;

    xaxis.range = [xl2r(dataBox[0]), xl2r(dataBox[2])];
    yaxis.range = [yl2r(dataBox[1]), yl2r(dataBox[3])];
};

proto.updateTraces = function(fullData, calcData) {
    var traceIds = Object.keys(this.traces);
    var i, j, fullTrace;

    this.fullData = fullData;

    // remove empty traces
    trace_id_loop:
    for(i = 0; i < traceIds.length; i++) {
        var oldUid = traceIds[i],
            oldTrace = this.traces[oldUid];

        for(j = 0; j < fullData.length; j++) {
            fullTrace = fullData[j];

            if(fullTrace.uid === oldUid && fullTrace.type === oldTrace.type) {
                continue trace_id_loop;
            }
        }

        oldTrace.dispose();
        delete this.traces[oldUid];
    }

    // update / create trace objects
    for(i = 0; i < fullData.length; i++) {
        fullTrace = fullData[i];
        this._inputs[fullTrace.uid] = i;
        var calcTrace = calcData[i],
            traceObj = this.traces[fullTrace.uid];

        if(traceObj) traceObj.update(fullTrace, calcTrace);
        else {
            traceObj = fullTrace._module.plot(this, fullTrace, calcTrace);
            this.traces[fullTrace.uid] = traceObj;
        }
    }
};

proto.emitPointAction = function(nextSelection, eventType) {

    var curveIndex = this._inputs[nextSelection.trace.uid];

    this.graphDiv.emit(eventType, {
        points: [{
            x: nextSelection.traceCoord[0],
            y: nextSelection.traceCoord[1],
            curveNumber: curveIndex,
            pointNumber: nextSelection.pointIndex,
            data: this.fullData[curveIndex]._input,
            fullData: this.fullData,
            xaxis: this.xaxis,
            yaxis: this.yaxis
        }]
    });
};

proto.draw = function() {
    if(this.stopped) return;

    requestAnimationFrame(this.redraw);

    var glplot = this.glplot,
        camera = this.camera,
        mouseListener = camera.mouseListener,
        mouseUp = this.lastButtonState === 1 && mouseListener.buttons === 0,
        fullLayout = this.fullLayout;

    this.lastButtonState = mouseListener.buttons;

    this.cameraChanged();

    var x = mouseListener.x * glplot.pixelRatio;
    var y = this.canvas.height - glplot.pixelRatio * mouseListener.y;

    if(camera.boxEnabled && fullLayout.dragmode === 'zoom') {
        this.selectBox.enabled = true;

        this.selectBox.selectBox = [
            Math.min(camera.boxStart[0], camera.boxEnd[0]),
            Math.min(camera.boxStart[1], camera.boxEnd[1]),
            Math.max(camera.boxStart[0], camera.boxEnd[0]),
            Math.max(camera.boxStart[1], camera.boxEnd[1])
        ];

        glplot.setDirty();
    }
    else {
        this.selectBox.enabled = false;

        var size = fullLayout._size,
            domainX = this.xaxis.domain,
            domainY = this.yaxis.domain;

        var result = glplot.pick(
            (x / glplot.pixelRatio) + size.l + domainX[0] * size.w,
            (y / glplot.pixelRatio) - (size.t + (1 - domainY[1]) * size.h)
        );

        var nextSelection = result && result.object._trace.handlePick(result);

        if(nextSelection && mouseUp) {
            this.emitPointAction(nextSelection, 'plotly_click');
        }

        if(result && result.object._trace.hoverinfo !== 'skip' && fullLayout.hovermode) {

            if(nextSelection && (
                !this.lastPickResult ||
                this.lastPickResult.traceUid !== nextSelection.trace.uid ||
                this.lastPickResult.dataCoord[0] !== nextSelection.dataCoord[0] ||
                this.lastPickResult.dataCoord[1] !== nextSelection.dataCoord[1])
            ) {
                var selection = nextSelection;

                this.lastPickResult = {
                    traceUid: nextSelection.trace ? nextSelection.trace.uid : null,
                    dataCoord: nextSelection.dataCoord.slice()
                };
                this.spikes.update({ center: result.dataCoord });

                selection.screenCoord = [
                    ((glplot.viewBox[2] - glplot.viewBox[0]) *
                    (result.dataCoord[0] - glplot.dataBox[0]) /
                        (glplot.dataBox[2] - glplot.dataBox[0]) + glplot.viewBox[0]) /
                            glplot.pixelRatio,
                    (this.canvas.height - (glplot.viewBox[3] - glplot.viewBox[1]) *
                    (result.dataCoord[1] - glplot.dataBox[1]) /
                        (glplot.dataBox[3] - glplot.dataBox[1]) - glplot.viewBox[1]) /
                            glplot.pixelRatio
                ];

                // this needs to happen before the next block that deletes traceCoord data
                // also it's important to copy, otherwise data is lost by the time event data is read
                this.emitPointAction(nextSelection, 'plotly_hover');

                var hoverinfo = selection.hoverinfo;
                if(hoverinfo !== 'all') {
                    var parts = hoverinfo.split('+');
                    if(parts.indexOf('x') === -1) selection.traceCoord[0] = undefined;
                    if(parts.indexOf('y') === -1) selection.traceCoord[1] = undefined;
                    if(parts.indexOf('z') === -1) selection.traceCoord[2] = undefined;
                    if(parts.indexOf('text') === -1) selection.textLabel = undefined;
                    if(parts.indexOf('name') === -1) selection.name = undefined;
                }

                Fx.loneHover({
                    x: selection.screenCoord[0],
                    y: selection.screenCoord[1],
                    xLabel: this.hoverFormatter('xaxis', selection.traceCoord[0]),
                    yLabel: this.hoverFormatter('yaxis', selection.traceCoord[1]),
                    zLabel: selection.traceCoord[2],
                    text: selection.textLabel,
                    name: selection.name,
                    color: selection.color
                }, {
                    container: this.svgContainer
                });
            }
        }
        else if(!result && this.lastPickResult) {
            this.spikes.update({});
            this.lastPickResult = null;
            this.graphDiv.emit('plotly_unhover');
            Fx.loneUnhover(this.svgContainer);
        }
    }

    glplot.draw();
};

proto.hoverFormatter = function(axisName, val) {
    if(val === undefined) return undefined;

    var axis = this[axisName];
    return Axes.tickText(axis, axis.c2l(val), 'hover').text;
};

},{"../../lib/html2unicode":609,"../../lib/show_no_webgl_msg":622,"../../plots/cartesian/axes":642,"../../plots/cartesian/graph_interact":649,"./camera":676,"./convert":677,"gl-plot2d":194,"gl-select-box":225,"gl-spikes2d":234,"webgl-context":1015}],680:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = createCamera;

var now = require('right-now');
var createView = require('3d-view');
var mouseChange = require('mouse-change');
var mouseWheel = require('mouse-wheel');

function createCamera(element, options) {
    element = element || document.body;
    options = options || {};

    var limits = [ 0.01, Infinity ];
    if('distanceLimits' in options) {
        limits[0] = options.distanceLimits[0];
        limits[1] = options.distanceLimits[1];
    }
    if('zoomMin' in options) {
        limits[0] = options.zoomMin;
    }
    if('zoomMax' in options) {
        limits[1] = options.zoomMax;
    }

    var view = createView({
        center: options.center || [0, 0, 0],
        up: options.up || [0, 1, 0],
        eye: options.eye || [0, 0, 10],
        mode: options.mode || 'orbit',
        distanceLimits: limits
    });

    var pmatrix = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
    var distance = 0.0;
    var width = element.clientWidth;
    var height = element.clientHeight;

    var camera = {
        keyBindingMode: 'rotate',
        view: view,
        element: element,
        delay: options.delay || 16,
        rotateSpeed: options.rotateSpeed || 1,
        zoomSpeed: options.zoomSpeed || 1,
        translateSpeed: options.translateSpeed || 1,
        flipX: !!options.flipX,
        flipY: !!options.flipY,
        modes: view.modes,
        tick: function() {
            var t = now();
            var delay = this.delay;
            var ctime = t - 2 * delay;
            view.idle(t - delay);
            view.recalcMatrix(ctime);
            view.flush(t - (100 + delay * 2));
            var allEqual = true;
            var matrix = view.computedMatrix;
            for(var i = 0; i < 16; ++i) {
                allEqual = allEqual && (pmatrix[i] === matrix[i]);
                pmatrix[i] = matrix[i];
            }
            var sizeChanged =
                element.clientWidth === width &&
                element.clientHeight === height;
            width = element.clientWidth;
            height = element.clientHeight;
            if(allEqual) return !sizeChanged;
            distance = Math.exp(view.computedRadius[0]);
            return true;
        },
        lookAt: function(center, eye, up) {
            view.lookAt(view.lastT(), center, eye, up);
        },
        rotate: function(pitch, yaw, roll) {
            view.rotate(view.lastT(), pitch, yaw, roll);
        },
        pan: function(dx, dy, dz) {
            view.pan(view.lastT(), dx, dy, dz);
        },
        translate: function(dx, dy, dz) {
            view.translate(view.lastT(), dx, dy, dz);
        }
    };

    Object.defineProperties(camera, {
        matrix: {
            get: function() {
                return view.computedMatrix;
            },
            set: function(mat) {
                view.setMatrix(view.lastT(), mat);
                return view.computedMatrix;
            },
            enumerable: true
        },
        mode: {
            get: function() {
                return view.getMode();
            },
            set: function(mode) {
                var curUp = view.computedUp.slice();
                var curEye = view.computedEye.slice();
                var curCenter = view.computedCenter.slice();
                view.setMode(mode);
                if(mode === 'turntable') {
                    // Hacky time warping stuff to generate smooth animation
                    var t0 = now();
                    view._active.lookAt(t0, curEye, curCenter, curUp);
                    view._active.lookAt(t0 + 500, curEye, curCenter, [0, 0, 1]);
                    view._active.flush(t0);
                }
                return view.getMode();
            },
            enumerable: true
        },
        center: {
            get: function() {
                return view.computedCenter;
            },
            set: function(ncenter) {
                view.lookAt(view.lastT(), null, ncenter);
                return view.computedCenter;
            },
            enumerable: true
        },
        eye: {
            get: function() {
                return view.computedEye;
            },
            set: function(neye) {
                view.lookAt(view.lastT(), neye);
                return view.computedEye;
            },
            enumerable: true
        },
        up: {
            get: function() {
                return view.computedUp;
            },
            set: function(nup) {
                view.lookAt(view.lastT(), null, null, nup);
                return view.computedUp;
            },
            enumerable: true
        },
        distance: {
            get: function() {
                return distance;
            },
            set: function(d) {
                view.setDistance(view.lastT(), d);
                return d;
            },
            enumerable: true
        },
        distanceLimits: {
            get: function() {
                return view.getDistanceLimits(limits);
            },
            set: function(v) {
                view.setDistanceLimits(v);
                return v;
            },
            enumerable: true
        }
    });

    element.addEventListener('contextmenu', function(ev) {
        ev.preventDefault();
        return false;
    });

    var lastX = 0, lastY = 0;
    mouseChange(element, function(buttons, x, y, mods) {
        var rotate = camera.keyBindingMode === 'rotate';
        var pan = camera.keyBindingMode === 'pan';
        var zoom = camera.keyBindingMode === 'zoom';

        var ctrl = !!mods.control;
        var alt = !!mods.alt;
        var shift = !!mods.shift;
        var left = !!(buttons & 1);
        var right = !!(buttons & 2);
        var middle = !!(buttons & 4);

        var scale = 1.0 / element.clientHeight;
        var dx = scale * (x - lastX);
        var dy = scale * (y - lastY);

        var flipX = camera.flipX ? 1 : -1;
        var flipY = camera.flipY ? 1 : -1;

        var t = now();

        var drot = Math.PI * camera.rotateSpeed;

        if((rotate && left && !ctrl && !alt && !shift) || (left && !ctrl && !alt && shift)) {
            // Rotate
            view.rotate(t, flipX * drot * dx, -flipY * drot * dy, 0);
        }

        if((pan && left && !ctrl && !alt && !shift) || right || (left && ctrl && !alt && !shift)) {
            // Pan
            view.pan(t, -camera.translateSpeed * dx * distance, camera.translateSpeed * dy * distance, 0);
        }

        if((zoom && left && !ctrl && !alt && !shift) || middle || (left && !ctrl && alt && !shift)) {
            // Zoom
            var kzoom = -camera.zoomSpeed * dy / window.innerHeight * (t - view.lastT()) * 100;
            view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1));
        }

        lastX = x;
        lastY = y;

        return true;
    });

    mouseWheel(element, function(dx, dy) {
        var flipX = camera.flipX ? 1 : -1;
        var flipY = camera.flipY ? 1 : -1;
        var t = now();
        if(Math.abs(dx) > Math.abs(dy)) {
            view.rotate(t, 0, 0, -dx * flipX * Math.PI * camera.rotateSpeed / window.innerWidth);
        } else {
            var kzoom = -camera.zoomSpeed * flipY * dy / window.innerHeight * (t - view.lastT()) / 100.0;
            view.pan(t, 0, 0, distance * (Math.exp(kzoom) - 1));
        }
    }, true);

    return camera;
}

},{"3d-view":2,"mouse-change":428,"mouse-wheel":431,"right-now":948}],681:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Scene = require('./scene');
var Plots = require('../plots');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');

var axesNames = ['xaxis', 'yaxis', 'zaxis'];


exports.name = 'gl3d';

exports.attr = 'scene';

exports.idRoot = 'scene';

exports.idRegex = /^scene([2-9]|[1-9][0-9]+)?$/;

exports.attrRegex = /^scene([2-9]|[1-9][0-9]+)?$/;

exports.attributes = require('./layout/attributes');

exports.layoutAttributes = require('./layout/layout_attributes');

exports.supplyLayoutDefaults = require('./layout/defaults');

exports.plot = function plotGl3d(gd) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d');

    fullLayout._paperdiv.style({
        width: fullLayout.width + 'px',
        height: fullLayout.height + 'px'
    });

    gd._context.setBackground(gd, fullLayout.paper_bgcolor);

    for(var i = 0; i < sceneIds.length; i++) {
        var sceneId = sceneIds[i],
            fullSceneData = Plots.getSubplotData(fullData, 'gl3d', sceneId),
            sceneLayout = fullLayout[sceneId],
            scene = sceneLayout._scene;

        // If Scene is not instantiated, create one!
        if(scene === undefined) {
            initAxes(gd, sceneLayout);

            scene = new Scene({
                id: sceneId,
                graphDiv: gd,
                container: gd.querySelector('.gl-container'),
                staticPlot: gd._context.staticPlot,
                plotGlPixelRatio: gd._context.plotGlPixelRatio
            },
                fullLayout
            );

            // set ref to Scene instance
            sceneLayout._scene = scene;
        }

        scene.plot(fullSceneData, fullLayout, gd.layout);
    }
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldSceneKeys = Plots.getSubplotIds(oldFullLayout, 'gl3d');

    for(var i = 0; i < oldSceneKeys.length; i++) {
        var oldSceneKey = oldSceneKeys[i];

        if(!newFullLayout[oldSceneKey] && !!oldFullLayout[oldSceneKey]._scene) {
            oldFullLayout[oldSceneKey]._scene.destroy();
        }
    }
};

exports.toSVG = function(gd) {
    var fullLayout = gd._fullLayout,
        sceneIds = Plots.getSubplotIds(fullLayout, 'gl3d'),
        size = fullLayout._size;

    for(var i = 0; i < sceneIds.length; i++) {
        var sceneLayout = fullLayout[sceneIds[i]],
            domain = sceneLayout.domain,
            scene = sceneLayout._scene;

        var imageData = scene.toImage('png');
        var image = fullLayout._glimages.append('svg:image');

        image.attr({
            xmlns: xmlnsNamespaces.svg,
            'xlink:href': imageData,
            x: size.l + size.w * domain.x[0],
            y: size.t + size.h * (1 - domain.y[1]),
            width: size.w * (domain.x[1] - domain.x[0]),
            height: size.h * (domain.y[1] - domain.y[0]),
            preserveAspectRatio: 'none'
        });

        scene.destroy();
    }
};

// clean scene ids, 'scene1' -> 'scene'
exports.cleanId = function cleanId(id) {
    if(!id.match(/^scene[0-9]*$/)) return;

    var sceneNum = id.substr(5);
    if(sceneNum === '1') sceneNum = '';

    return 'scene' + sceneNum;
};

exports.setConvert = require('./set_convert');

function initAxes(gd, sceneLayout) {
    for(var j = 0; j < 3; ++j) {
        var axisName = axesNames[j];

        sceneLayout[axisName]._gd = gd;
    }
}

},{"../../constants/xmlns_namespaces":595,"../plots":702,"./layout/attributes":682,"./layout/defaults":686,"./layout/layout_attributes":687,"./scene":691,"./set_convert":692}],682:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    scene: {
        valType: 'subplotid',
        role: 'info',
        dflt: 'scene',
        description: [
            'Sets a reference between this trace\'s 3D coordinate system and',
            'a 3D scene.',
            'If *scene* (the default value), the (x,y,z) coordinates refer to',
            '`layout.scene`.',
            'If *scene2*, the (x,y,z) coordinates refer to `layout.scene2`,',
            'and so on.'
        ].join(' ')
    }
};

},{}],683:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Color = require('../../../components/color');
var axesAttrs = require('../../cartesian/layout_attributes');
var extendFlat = require('../../../lib/extend').extendFlat;


module.exports = {
    showspikes: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Sets whether or not spikes starting from',
            'data points to this axis\' wall are shown on hover.'
        ].join(' ')
    },
    spikesides: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Sets whether or not spikes extending from the',
            'projection data points to this axis\' wall boundaries',
            'are shown on hover.'
        ].join(' ')
    },
    spikethickness: {
        valType: 'number',
        role: 'style',
        min: 0,
        dflt: 2,
        description: 'Sets the thickness (in px) of the spikes.'
    },
    spikecolor: {
        valType: 'color',
        role: 'style',
        dflt: Color.defaultLine,
        description: 'Sets the color of the spikes.'
    },
    showbackground: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: [
            'Sets whether or not this axis\' wall',
            'has a background color.'
        ].join(' ')
    },
    backgroundcolor: {
        valType: 'color',
        role: 'style',
        dflt: 'rgba(204, 204, 204, 0.5)',
        description: 'Sets the background color of this axis\' wall.'
    },
    showaxeslabels: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: 'Sets whether or not this axis is labeled'
    },
    color: axesAttrs.color,
    categoryorder: axesAttrs.categoryorder,
    categoryarray: axesAttrs.categoryarray,
    title: axesAttrs.title,
    titlefont: axesAttrs.titlefont,
    type: axesAttrs.type,
    autorange: axesAttrs.autorange,
    rangemode: axesAttrs.rangemode,
    range: axesAttrs.range,
    fixedrange: axesAttrs.fixedrange,
    // ticks
    tickmode: axesAttrs.tickmode,
    nticks: axesAttrs.nticks,
    tick0: axesAttrs.tick0,
    dtick: axesAttrs.dtick,
    tickvals: axesAttrs.tickvals,
    ticktext: axesAttrs.ticktext,
    ticks: axesAttrs.ticks,
    mirror: axesAttrs.mirror,
    ticklen: axesAttrs.ticklen,
    tickwidth: axesAttrs.tickwidth,
    tickcolor: axesAttrs.tickcolor,
    showticklabels: axesAttrs.showticklabels,
    tickfont: axesAttrs.tickfont,
    tickangle: axesAttrs.tickangle,
    tickprefix: axesAttrs.tickprefix,
    showtickprefix: axesAttrs.showtickprefix,
    ticksuffix: axesAttrs.ticksuffix,
    showticksuffix: axesAttrs.showticksuffix,
    showexponent: axesAttrs.showexponent,
    exponentformat: axesAttrs.exponentformat,
    separatethousands: axesAttrs.separatethousands,
    tickformat: axesAttrs.tickformat,
    hoverformat: axesAttrs.hoverformat,
    // lines and grids
    showline: axesAttrs.showline,
    linecolor: axesAttrs.linecolor,
    linewidth: axesAttrs.linewidth,
    showgrid: axesAttrs.showgrid,
    gridcolor: extendFlat({}, axesAttrs.gridcolor,  // shouldn't this be on-par with 2D?
        {dflt: 'rgb(204, 204, 204)'}),
    gridwidth: axesAttrs.gridwidth,
    zeroline: axesAttrs.zeroline,
    zerolinecolor: axesAttrs.zerolinecolor,
    zerolinewidth: axesAttrs.zerolinewidth
};

},{"../../../components/color":510,"../../../lib/extend":603,"../../cartesian/layout_attributes":651}],684:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var colorMix = require('tinycolor2').mix;

var Lib = require('../../../lib');

var layoutAttributes = require('./axis_attributes');
var handleAxisDefaults = require('../../cartesian/axis_defaults');

var axesNames = ['xaxis', 'yaxis', 'zaxis'];

// TODO: hard-coded lightness fraction based on gridline default colors
// that differ from other subplot types.
var gridLightness = 100 * (204 - 0x44) / (255 - 0x44);

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, options) {
    var containerIn, containerOut;

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, layoutAttributes, attr, dflt);
    }

    for(var j = 0; j < axesNames.length; j++) {
        var axName = axesNames[j];
        containerIn = layoutIn[axName] || {};

        containerOut = {
            _id: axName[0] + options.scene,
            _name: axName
        };

        layoutOut[axName] = containerOut = handleAxisDefaults(
            containerIn,
            containerOut,
            coerce, {
                font: options.font,
                letter: axName[0],
                data: options.data,
                showGrid: true,
                bgColor: options.bgColor,
                calendar: options.calendar
            });

        coerce('gridcolor', colorMix(containerOut.color, options.bgColor, gridLightness).toRgbString());
        coerce('title', axName[0]);  // shouldn't this be on-par with 2D?

        containerOut.setScale = Lib.noop;

        if(coerce('showspikes')) {
            coerce('spikesides');
            coerce('spikethickness');
            coerce('spikecolor', containerOut.color);
        }

        coerce('showaxeslabels');
        if(coerce('showbackground')) coerce('backgroundcolor');
    }
};

},{"../../../lib":610,"../../cartesian/axis_defaults":644,"./axis_attributes":683,"tinycolor2":985}],685:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var arrtools = require('arraytools');
var convertHTMLToUnicode = require('../../../lib/html2unicode');
var str2RgbaArray = require('../../../lib/str2rgbarray');

var arrayCopy1D = arrtools.copy1D;

var AXES_NAMES = ['xaxis', 'yaxis', 'zaxis'];

function AxesOptions() {
    this.bounds = [
        [-10, -10, -10],
        [10, 10, 10]
    ];

    this.ticks = [ [], [], [] ];
    this.tickEnable = [ true, true, true ];
    this.tickFont = [ 'sans-serif', 'sans-serif', 'sans-serif' ];
    this.tickSize = [ 12, 12, 12 ];
    this.tickAngle = [ 0, 0, 0 ];
    this.tickColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ];
    this.tickPad = [ 18, 18, 18 ];

    this.labels = [ 'x', 'y', 'z' ];
    this.labelEnable = [ true, true, true ];
    this.labelFont = ['Open Sans', 'Open Sans', 'Open Sans'];
    this.labelSize = [ 20, 20, 20 ];
    this.labelAngle = [ 0, 0, 0 ];
    this.labelColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ];
    this.labelPad = [ 30, 30, 30 ];

    this.lineEnable = [ true, true, true ];
    this.lineMirror = [ false, false, false ];
    this.lineWidth = [ 1, 1, 1 ];
    this.lineColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ];

    this.lineTickEnable = [ true, true, true ];
    this.lineTickMirror = [ false, false, false ];
    this.lineTickLength = [ 10, 10, 10 ];
    this.lineTickWidth = [ 1, 1, 1 ];
    this.lineTickColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ];

    this.gridEnable = [ true, true, true ];
    this.gridWidth = [ 1, 1, 1 ];
    this.gridColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ];

    this.zeroEnable = [ true, true, true ];
    this.zeroLineColor = [ [0, 0, 0, 1], [0, 0, 0, 1], [0, 0, 0, 1] ];
    this.zeroLineWidth = [ 2, 2, 2 ];

    this.backgroundEnable = [ true, true, true ];
    this.backgroundColor = [ [0.8, 0.8, 0.8, 0.5],
                              [0.8, 0.8, 0.8, 0.5],
                              [0.8, 0.8, 0.8, 0.5] ];

    // some default values are stored for applying model transforms
    this._defaultTickPad = arrayCopy1D(this.tickPad);
    this._defaultLabelPad = arrayCopy1D(this.labelPad);
    this._defaultLineTickLength = arrayCopy1D(this.lineTickLength);
}

var proto = AxesOptions.prototype;

proto.merge = function(sceneLayout) {
    var opts = this;
    for(var i = 0; i < 3; ++i) {
        var axes = sceneLayout[AXES_NAMES[i]];

        // Axes labels
        opts.labels[i] = convertHTMLToUnicode(axes.title);
        if('titlefont' in axes) {
            if(axes.titlefont.color) opts.labelColor[i] = str2RgbaArray(axes.titlefont.color);
            if(axes.titlefont.family) opts.labelFont[i] = axes.titlefont.family;
            if(axes.titlefont.size) opts.labelSize[i] = axes.titlefont.size;
        }

        // Lines
        if('showline' in axes) opts.lineEnable[i] = axes.showline;
        if('linecolor' in axes) opts.lineColor[i] = str2RgbaArray(axes.linecolor);
        if('linewidth' in axes) opts.lineWidth[i] = axes.linewidth;

        if('showgrid' in axes) opts.gridEnable[i] = axes.showgrid;
        if('gridcolor' in axes) opts.gridColor[i] = str2RgbaArray(axes.gridcolor);
        if('gridwidth' in axes) opts.gridWidth[i] = axes.gridwidth;

        // Remove zeroline if axis type is log
        // otherwise the zeroline is incorrectly drawn at 1 on log axes
        if(axes.type === 'log') opts.zeroEnable[i] = false;
        else if('zeroline' in axes) opts.zeroEnable[i] = axes.zeroline;
        if('zerolinecolor' in axes) opts.zeroLineColor[i] = str2RgbaArray(axes.zerolinecolor);
        if('zerolinewidth' in axes) opts.zeroLineWidth[i] = axes.zerolinewidth;

        // tick lines
        if('ticks' in axes && !!axes.ticks) opts.lineTickEnable[i] = true;
        else opts.lineTickEnable[i] = false;

        if('ticklen' in axes) {
            opts.lineTickLength[i] = opts._defaultLineTickLength[i] = axes.ticklen;
        }
        if('tickcolor' in axes) opts.lineTickColor[i] = str2RgbaArray(axes.tickcolor);
        if('tickwidth' in axes) opts.lineTickWidth[i] = axes.tickwidth;
        if('tickangle' in axes) {
            opts.tickAngle[i] = (axes.tickangle === 'auto') ?
                0 :
                Math.PI * -axes.tickangle / 180;
        }
        // tick labels
        if('showticklabels' in axes) opts.tickEnable[i] = axes.showticklabels;
        if('tickfont' in axes) {
            if(axes.tickfont.color) opts.tickColor[i] = str2RgbaArray(axes.tickfont.color);
            if(axes.tickfont.family) opts.tickFont[i] = axes.tickfont.family;
            if(axes.tickfont.size) opts.tickSize[i] = axes.tickfont.size;
        }

        if('mirror' in axes) {
            if(['ticks', 'all', 'allticks'].indexOf(axes.mirror) !== -1) {
                opts.lineTickMirror[i] = true;
                opts.lineMirror[i] = true;
            } else if(axes.mirror === true) {
                opts.lineTickMirror[i] = false;
                opts.lineMirror[i] = true;
            } else {
                opts.lineTickMirror[i] = false;
                opts.lineMirror[i] = false;
            }
        } else opts.lineMirror[i] = false;

        // grid background
        if('showbackground' in axes && axes.showbackground !== false) {
            opts.backgroundEnable[i] = true;
            opts.backgroundColor[i] = str2RgbaArray(axes.backgroundcolor);
        } else opts.backgroundEnable[i] = false;
    }
};


function createAxesOptions(plotlyOptions) {
    var result = new AxesOptions();
    result.merge(plotlyOptions);
    return result;
}

module.exports = createAxesOptions;

},{"../../../lib/html2unicode":609,"../../../lib/str2rgbarray":624,"arraytools":8}],686:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../../components/color');

var handleSubplotDefaults = require('../../subplot_defaults');
var layoutAttributes = require('./layout_attributes');
var supplyGl3dAxisLayoutDefaults = require('./axis_defaults');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    var hasNon3D = (
        layoutOut._has('cartesian') ||
        layoutOut._has('geo') ||
        layoutOut._has('gl2d') ||
        layoutOut._has('pie') ||
        layoutOut._has('ternary')
    );

    // some layout-wide attribute are used in all scenes
    // if 3D is the only visible plot type
    function getDfltFromLayout(attr) {
        if(hasNon3D) return;

        var isValid = layoutAttributes[attr].values.indexOf(layoutIn[attr]) !== -1;
        if(isValid) return layoutIn[attr];
    }

    handleSubplotDefaults(layoutIn, layoutOut, fullData, {
        type: 'gl3d',
        attributes: layoutAttributes,
        handleDefaults: handleGl3dDefaults,
        font: layoutOut.font,
        fullData: fullData,
        getDfltFromLayout: getDfltFromLayout,
        paper_bgcolor: layoutOut.paper_bgcolor,
        calendar: layoutOut.calendar
    });
};

function handleGl3dDefaults(sceneLayoutIn, sceneLayoutOut, coerce, opts) {
    /*
     * Scene numbering proceeds as follows
     * scene
     * scene2
     * scene3
     *
     * and d.scene will be undefined or some number or number string
     *
     * Also write back a blank scene object to user layout so that some
     * attributes like aspectratio can be written back dynamically.
     */

    var bgcolor = coerce('bgcolor'),
        bgColorCombined = Color.combine(bgcolor, opts.paper_bgcolor);

    var cameraKeys = Object.keys(layoutAttributes.camera);

    for(var j = 0; j < cameraKeys.length; j++) {
        coerce('camera.' + cameraKeys[j] + '.x');
        coerce('camera.' + cameraKeys[j] + '.y');
        coerce('camera.' + cameraKeys[j] + '.z');
    }

    /*
     * coerce to positive number (min 0) but also do not accept 0 (>0 not >=0)
     * note that 0's go false with the !! call
     */
    var hasAspect = !!coerce('aspectratio.x') &&
                    !!coerce('aspectratio.y') &&
                    !!coerce('aspectratio.z');

    var defaultAspectMode = hasAspect ? 'manual' : 'auto';
    var aspectMode = coerce('aspectmode', defaultAspectMode);

    /*
     * We need aspectratio object in all the Layouts as it is dynamically set
     * in the calculation steps, ie, we cant set the correct data now, it happens later.
     * We must also account for the case the user sends bad ratio data with 'manual' set
     * for the mode. In this case we must force change it here as the default coerce
     * misses it above.
     */
    if(!hasAspect) {
        sceneLayoutIn.aspectratio = sceneLayoutOut.aspectratio = {x: 1, y: 1, z: 1};

        if(aspectMode === 'manual') sceneLayoutOut.aspectmode = 'auto';
    }

    supplyGl3dAxisLayoutDefaults(sceneLayoutIn, sceneLayoutOut, {
        font: opts.font,
        scene: opts.id,
        data: opts.fullData,
        bgColor: bgColorCombined,
        calendar: opts.calendar
    });

    coerce('dragmode', opts.getDfltFromLayout('dragmode'));
    coerce('hovermode', opts.getDfltFromLayout('hovermode'));
}

},{"../../../components/color":510,"../../subplot_defaults":709,"./axis_defaults":684,"./layout_attributes":687}],687:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var gl3dAxisAttrs = require('./axis_attributes');
var extendFlat = require('../../../lib/extend').extendFlat;

function makeVector(x, y, z) {
    return {
        x: {
            valType: 'number',
            role: 'info',
            dflt: x
        },
        y: {
            valType: 'number',
            role: 'info',
            dflt: y
        },
        z: {
            valType: 'number',
            role: 'info',
            dflt: z
        }
    };
}

module.exports = {
    bgcolor: {
        valType: 'color',
        role: 'style',
        dflt: 'rgba(0,0,0,0)'
    },
    camera: {
        up: extendFlat(makeVector(0, 0, 1), {
            description: [
                'Sets the (x,y,z) components of the \'up\' camera vector.',
                'This vector determines the up direction of this scene',
                'with respect to the page.',
                'The default is *{x: 0, y: 0, z: 1}* which means that',
                'the z axis points up.'
            ].join(' ')
        }),
        center: extendFlat(makeVector(0, 0, 0), {
            description: [
                'Sets the (x,y,z) components of the \'center\' camera vector',
                'This vector determines the translation (x,y,z) space',
                'about the center of this scene.',
                'By default, there is no such translation.'
            ].join(' ')
        }),
        eye: extendFlat(makeVector(1.25, 1.25, 1.25), {
            description: [
                'Sets the (x,y,z) components of the \'eye\' camera vector.',
                'This vector determines the view point about the origin',
                'of this scene.'
            ].join(' ')
        })
    },
    domain: {
        x: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the horizontal domain of this scene',
                '(in plot fraction).'
            ].join(' ')
        },
        y: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the vertical domain of this scene',
                '(in plot fraction).'
            ].join(' ')
        }
    },
    aspectmode: {
        valType: 'enumerated',
        role: 'info',
        values: ['auto', 'cube', 'data', 'manual'],
        dflt: 'auto',
        description: [
            'If *cube*, this scene\'s axes are drawn as a cube,',
            'regardless of the axes\' ranges.',

            'If *data*, this scene\'s axes are drawn',
            'in proportion with the axes\' ranges.',

            'If *manual*, this scene\'s axes are drawn',
            'in proportion with the input of *aspectratio*',
            '(the default behavior if *aspectratio* is provided).',

            'If *auto*, this scene\'s axes are drawn',
            'using the results of *data* except when one axis',
            'is more than four times the size of the two others,',
            'where in that case the results of *cube* are used.'
        ].join(' ')
    },
    aspectratio: { // must be positive (0's are coerced to 1)
        x: {
            valType: 'number',
            role: 'info',
            min: 0
        },
        y: {
            valType: 'number',
            role: 'info',
            min: 0
        },
        z: {
            valType: 'number',
            role: 'info',
            min: 0
        },
        description: [
            'Sets this scene\'s axis aspectratio.'
        ].join(' ')
    },

    xaxis: gl3dAxisAttrs,
    yaxis: gl3dAxisAttrs,
    zaxis: gl3dAxisAttrs,

    dragmode: {
        valType: 'enumerated',
        role: 'info',
        values: ['orbit', 'turntable', 'zoom', 'pan'],
        dflt: 'turntable',
        description: [
            'Determines the mode of drag interactions for this scene.'
        ].join(' ')
    },
    hovermode: {
        valType: 'enumerated',
        role: 'info',
        values: ['closest', false],
        dflt: 'closest',
        description: [
            'Determines the mode of hover interactions for this scene.'
        ].join(' ')
    },

    _deprecated: {
        cameraposition: {
            valType: 'info_array',
            role: 'info',
            description: 'Obsolete. Use `camera` instead.'
        }
    }
};

},{"../../../lib/extend":603,"./axis_attributes":683}],688:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var str2RGBArray = require('../../../lib/str2rgbarray');

var AXES_NAMES = ['xaxis', 'yaxis', 'zaxis'];

function SpikeOptions() {
    this.enabled = [true, true, true];
    this.colors = [[0, 0, 0, 1],
                   [0, 0, 0, 1],
                   [0, 0, 0, 1]];
    this.drawSides = [true, true, true];
    this.lineWidth = [1, 1, 1];
}

var proto = SpikeOptions.prototype;

proto.merge = function(sceneLayout) {
    for(var i = 0; i < 3; ++i) {
        var axes = sceneLayout[AXES_NAMES[i]];

        this.enabled[i] = axes.showspikes;
        this.colors[i] = str2RGBArray(axes.spikecolor);
        this.drawSides[i] = axes.spikesides;
        this.lineWidth[i] = axes.spikethickness;
    }
};

function createSpikeOptions(layout) {
    var result = new SpikeOptions();
    result.merge(layout);
    return result;
}

module.exports = createSpikeOptions;

},{"../../../lib/str2rgbarray":624}],689:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

/* eslint block-scoped-var: 0*/
/* eslint no-redeclare: 0*/

'use strict';

module.exports = computeTickMarks;

var Axes = require('../../cartesian/axes');
var Lib = require('../../../lib');
var convertHTMLToUnicode = require('../../../lib/html2unicode');

var AXES_NAMES = ['xaxis', 'yaxis', 'zaxis'];

var centerPoint = [0, 0, 0];

function contourLevelsFromTicks(ticks) {
    var result = new Array(3);
    for(var i = 0; i < 3; ++i) {
        var tlevel = ticks[i];
        var clevel = new Array(tlevel.length);
        for(var j = 0; j < tlevel.length; ++j) {
            clevel[j] = tlevel[j].x;
        }
        result[i] = clevel;
    }
    return result;
}

function computeTickMarks(scene) {
    var axesOptions = scene.axesOptions;
    var glRange = scene.glplot.axesPixels;
    var sceneLayout = scene.fullSceneLayout;

    var ticks = [[], [], []];

    for(var i = 0; i < 3; ++i) {
        var axes = sceneLayout[AXES_NAMES[i]];

        axes._length = (glRange[i].hi - glRange[i].lo) *
            glRange[i].pixelsPerDataUnit / scene.dataScale[i];

        if(Math.abs(axes._length) === Infinity) {
            ticks[i] = [];
        } else {
            axes.range[0] = (glRange[i].lo) / scene.dataScale[i];
            axes.range[1] = (glRange[i].hi) / scene.dataScale[i];
            axes._m = 1.0 / (scene.dataScale[i] * glRange[i].pixelsPerDataUnit);

            if(axes.range[0] === axes.range[1]) {
                axes.range[0] -= 1;
                axes.range[1] += 1;
            }
            // this is necessary to short-circuit the 'y' handling
            // in autotick part of calcTicks... Treating all axes as 'y' in this case
            // running the autoticks here, then setting
            // autoticks to false to get around the 2D handling in calcTicks.
            var tickModeCached = axes.tickmode;
            if(axes.tickmode === 'auto') {
                axes.tickmode = 'linear';
                var nticks = axes.nticks || Lib.constrain((axes._length / 40), 4, 9);
                Axes.autoTicks(axes, Math.abs(axes.range[1] - axes.range[0]) / nticks);
            }
            var dataTicks = Axes.calcTicks(axes);
            for(var j = 0; j < dataTicks.length; ++j) {
                dataTicks[j].x = dataTicks[j].x * scene.dataScale[i];
                dataTicks[j].text = convertHTMLToUnicode(dataTicks[j].text);
            }
            ticks[i] = dataTicks;


            axes.tickmode = tickModeCached;
        }
    }

    axesOptions.ticks = ticks;

    // Calculate tick lengths dynamically
    for(var i = 0; i < 3; ++i) {
        centerPoint[i] = 0.5 * (scene.glplot.bounds[0][i] + scene.glplot.bounds[1][i]);
        for(var j = 0; j < 2; ++j) {
            axesOptions.bounds[j][i] = scene.glplot.bounds[j][i];
        }
    }

    scene.contourLevels = contourLevelsFromTicks(ticks);
}

},{"../../../lib":610,"../../../lib/html2unicode":609,"../../cartesian/axes":642}],690:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

function xformMatrix(m, v) {
    var out = [0, 0, 0, 0];
    var i, j;

    for(i = 0; i < 4; ++i) {
        for(j = 0; j < 4; ++j) {
            out[j] += m[4 * i + j] * v[i];
        }
    }

    return out;
}

function project(camera, v) {
    var p = xformMatrix(camera.projection,
        xformMatrix(camera.view,
        xformMatrix(camera.model, [v[0], v[1], v[2], 1])));
    return p;
}

module.exports = project;

},{}],691:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createPlot = require('gl-plot3d');
var getContext = require('webgl-context');

var Lib = require('../../lib');

var Axes = require('../../plots/cartesian/axes');
var Fx = require('../../plots/cartesian/graph_interact');

var str2RGBAarray = require('../../lib/str2rgbarray');
var showNoWebGlMsg = require('../../lib/show_no_webgl_msg');

var createCamera = require('./camera');
var project = require('./project');
var setConvert = require('./set_convert');
var createAxesOptions = require('./layout/convert');
var createSpikeOptions = require('./layout/spikes');
var computeTickMarks = require('./layout/tick_marks');

var STATIC_CANVAS, STATIC_CONTEXT;

function render(scene) {

    var trace;

    // update size of svg container
    var svgContainer = scene.svgContainer;
    var clientRect = scene.container.getBoundingClientRect();
    var width = clientRect.width, height = clientRect.height;
    svgContainer.setAttributeNS(null, 'viewBox', '0 0 ' + width + ' ' + height);
    svgContainer.setAttributeNS(null, 'width', width);
    svgContainer.setAttributeNS(null, 'height', height);

    computeTickMarks(scene);
    scene.glplot.axes.update(scene.axesOptions);

    // check if pick has changed
    var keys = Object.keys(scene.traces);
    var lastPicked = null;
    var selection = scene.glplot.selection;
    for(var i = 0; i < keys.length; ++i) {
        trace = scene.traces[keys[i]];
        if(trace.data.hoverinfo !== 'skip' && trace.handlePick(selection)) {
            lastPicked = trace;
        }

        if(trace.setContourLevels) trace.setContourLevels();
    }

    function formatter(axisName, val) {
        if(typeof val === 'string') return val;

        var axis = scene.fullSceneLayout[axisName];
        return Axes.tickText(axis, axis.c2l(val), 'hover').text;
    }

    var oldEventData;

    if(lastPicked !== null) {
        var pdata = project(scene.glplot.cameraParams, selection.dataCoordinate);
        trace = lastPicked.data;
        var hoverinfo = trace.hoverinfo;

        var xVal = formatter('xaxis', selection.traceCoordinate[0]),
            yVal = formatter('yaxis', selection.traceCoordinate[1]),
            zVal = formatter('zaxis', selection.traceCoordinate[2]);

        if(hoverinfo !== 'all') {
            var hoverinfoParts = hoverinfo.split('+');
            if(hoverinfoParts.indexOf('x') === -1) xVal = undefined;
            if(hoverinfoParts.indexOf('y') === -1) yVal = undefined;
            if(hoverinfoParts.indexOf('z') === -1) zVal = undefined;
            if(hoverinfoParts.indexOf('text') === -1) selection.textLabel = undefined;
            if(hoverinfoParts.indexOf('name') === -1) lastPicked.name = undefined;
        }

        if(scene.fullSceneLayout.hovermode) {
            Fx.loneHover({
                x: (0.5 + 0.5 * pdata[0] / pdata[3]) * width,
                y: (0.5 - 0.5 * pdata[1] / pdata[3]) * height,
                xLabel: xVal,
                yLabel: yVal,
                zLabel: zVal,
                text: selection.textLabel,
                name: lastPicked.name,
                color: lastPicked.color
            }, {
                container: svgContainer
            });
        }

        var eventData = {
            points: [{
                x: xVal,
                y: yVal,
                z: zVal,
                data: trace._input,
                fullData: trace,
                curveNumber: trace.index,
                pointNumber: selection.data.index
            }]
        };

        if(selection.buttons && selection.distance < 5) {
            scene.graphDiv.emit('plotly_click', eventData);
        }
        else {
            scene.graphDiv.emit('plotly_hover', eventData);
        }

        oldEventData = eventData;
    }
    else {
        Fx.loneUnhover(svgContainer);
        scene.graphDiv.emit('plotly_unhover', oldEventData);
    }
}

function initializeGLPlot(scene, fullLayout, canvas, gl) {
    var glplotOptions = {
        canvas: canvas,
        gl: gl,
        container: scene.container,
        axes: scene.axesOptions,
        spikes: scene.spikeOptions,
        pickRadius: 10,
        snapToData: true,
        autoScale: true,
        autoBounds: false
    };

    // for static plots, we reuse the WebGL context
    //  as WebKit doesn't collect them reliably
    if(scene.staticMode) {
        if(!STATIC_CONTEXT) {
            STATIC_CANVAS = document.createElement('canvas');
            STATIC_CONTEXT = getContext({
                canvas: STATIC_CANVAS,
                preserveDrawingBuffer: true,
                premultipliedAlpha: true,
                antialias: true
            });
            if(!STATIC_CONTEXT) {
                throw new Error('error creating static canvas/context for image server');
            }
        }
        glplotOptions.pixelRatio = scene.pixelRatio;
        glplotOptions.gl = STATIC_CONTEXT;
        glplotOptions.canvas = STATIC_CANVAS;
    }

    try {
        scene.glplot = createPlot(glplotOptions);
    }
    catch(e) {
        /*
        * createPlot will throw when webgl is not enabled in the client.
        * Lets return an instance of the module with all functions noop'd.
        * The destroy method - which will remove the container from the DOM
        * is overridden with a function that removes the container only.
        */
        showNoWebGlMsg(scene);
    }

    var relayoutCallback = function(scene) {
        var update = {};
        update[scene.id] = getLayoutCamera(scene.camera);
        scene.saveCamera(scene.graphDiv.layout);
        scene.graphDiv.emit('plotly_relayout', update);
    };

    scene.glplot.canvas.addEventListener('mouseup', relayoutCallback.bind(null, scene));
    scene.glplot.canvas.addEventListener('wheel', relayoutCallback.bind(null, scene));

    if(!scene.staticMode) {
        scene.glplot.canvas.addEventListener('webglcontextlost', function(ev) {
            Lib.warn('Lost WebGL context.');
            ev.preventDefault();
        });
    }

    if(!scene.camera) {
        var cameraData = scene.fullSceneLayout.camera;
        scene.camera = createCamera(scene.container, {
            center: [cameraData.center.x, cameraData.center.y, cameraData.center.z],
            eye: [cameraData.eye.x, cameraData.eye.y, cameraData.eye.z],
            up: [cameraData.up.x, cameraData.up.y, cameraData.up.z],
            zoomMin: 0.1,
            zoomMax: 100,
            mode: 'orbit'
        });
    }

    scene.glplot.mouseListener.enabled = false;
    scene.glplot.camera = scene.camera;

    scene.glplot.oncontextloss = function() {
        scene.recoverContext();
    };

    scene.glplot.onrender = render.bind(null, scene);

    // List of scene objects
    scene.traces = {};

    return true;
}

function Scene(options, fullLayout) {

    // create sub container for plot
    var sceneContainer = document.createElement('div');
    var plotContainer = options.container;

    // keep a ref to the graph div to fire hover+click events
    this.graphDiv = options.graphDiv;

    // create SVG container for hover text
    var svgContainer = document.createElementNS(
        'http://www.w3.org/2000/svg',
        'svg');
    svgContainer.style.position = 'absolute';
    svgContainer.style.top = svgContainer.style.left = '0px';
    svgContainer.style.width = svgContainer.style.height = '100%';
    svgContainer.style['z-index'] = 20;
    svgContainer.style['pointer-events'] = 'none';
    sceneContainer.appendChild(svgContainer);
    this.svgContainer = svgContainer;

    // Tag the container with the sceneID
    sceneContainer.id = options.id;
    sceneContainer.style.position = 'absolute';
    sceneContainer.style.top = sceneContainer.style.left = '0px';
    sceneContainer.style.width = sceneContainer.style.height = '100%';
    plotContainer.appendChild(sceneContainer);

    this.fullLayout = fullLayout;
    this.id = options.id || 'scene';
    this.fullSceneLayout = fullLayout[this.id];

    // Saved from last call to plot()
    this.plotArgs = [ [], {}, {} ];

    /*
     * Move this to calc step? Why does it work here?
     */
    this.axesOptions = createAxesOptions(fullLayout[this.id]);
    this.spikeOptions = createSpikeOptions(fullLayout[this.id]);
    this.container = sceneContainer;
    this.staticMode = !!options.staticPlot;
    this.pixelRatio = options.plotGlPixelRatio || 2;

    // Coordinate rescaling
    this.dataScale = [1, 1, 1];

    this.contourLevels = [ [], [], [] ];

    if(!initializeGLPlot(this, fullLayout)) return; // todo check the necessity for this line
}

var proto = Scene.prototype;

proto.recoverContext = function() {
    var scene = this;
    var gl = this.glplot.gl;
    var canvas = this.glplot.canvas;
    this.glplot.dispose();

    function tryRecover() {
        if(gl.isContextLost()) {
            requestAnimationFrame(tryRecover);
            return;
        }
        if(!initializeGLPlot(scene, scene.fullLayout, canvas, gl)) {
            Lib.error('Catastrophic and unrecoverable WebGL error. Context lost.');
            return;
        }
        scene.plot.apply(scene, scene.plotArgs);
    }
    requestAnimationFrame(tryRecover);
};

var axisProperties = [ 'xaxis', 'yaxis', 'zaxis' ];

function coordinateBound(axis, coord, d, bounds, calendar) {
    var x;
    for(var i = 0; i < coord.length; ++i) {
        if(Array.isArray(coord[i])) {
            for(var j = 0; j < coord[i].length; ++j) {
                x = axis.d2l(coord[i][j], 0, calendar);
                if(!isNaN(x) && isFinite(x)) {
                    bounds[0][d] = Math.min(bounds[0][d], x);
                    bounds[1][d] = Math.max(bounds[1][d], x);
                }
            }
        }
        else {
            x = axis.d2l(coord[i], 0, calendar);
            if(!isNaN(x) && isFinite(x)) {
                bounds[0][d] = Math.min(bounds[0][d], x);
                bounds[1][d] = Math.max(bounds[1][d], x);
            }
        }
    }
}

function computeTraceBounds(scene, trace, bounds) {
    var sceneLayout = scene.fullSceneLayout;
    coordinateBound(sceneLayout.xaxis, trace.x, 0, bounds, trace.xcalendar);
    coordinateBound(sceneLayout.yaxis, trace.y, 1, bounds, trace.ycalendar);
    coordinateBound(sceneLayout.zaxis, trace.z, 2, bounds, trace.zcalendar);
}

proto.plot = function(sceneData, fullLayout, layout) {
    // Save parameters
    this.plotArgs = [sceneData, fullLayout, layout];

    if(this.glplot.contextLost) return;

    var data, trace;
    var i, j, axis, axisType;
    var fullSceneLayout = fullLayout[this.id];
    var sceneLayout = layout[this.id];

    if(fullSceneLayout.bgcolor) this.glplot.clearColor = str2RGBAarray(fullSceneLayout.bgcolor);
    else this.glplot.clearColor = [0, 0, 0, 0];

    this.glplot.snapToData = true;

    // Update layout
    this.fullSceneLayout = fullSceneLayout;

    this.glplotLayout = fullSceneLayout;
    this.axesOptions.merge(fullSceneLayout);
    this.spikeOptions.merge(fullSceneLayout);

    // Update camera mode
    this.updateFx(fullSceneLayout.dragmode, fullSceneLayout.hovermode);

    // Update scene
    this.glplot.update({});

    // Update axes functions BEFORE updating traces
    for(i = 0; i < 3; ++i) {
        axis = fullSceneLayout[axisProperties[i]];
        setConvert(axis);
    }

    // Convert scene data
    if(!sceneData) sceneData = [];
    else if(!Array.isArray(sceneData)) sceneData = [sceneData];

    // Compute trace bounding box
    var dataBounds = [
        [Infinity, Infinity, Infinity],
        [-Infinity, -Infinity, -Infinity]
    ];
    for(i = 0; i < sceneData.length; ++i) {
        data = sceneData[i];
        if(data.visible !== true) continue;

        computeTraceBounds(this, data, dataBounds);
    }
    var dataScale = [1, 1, 1];
    for(j = 0; j < 3; ++j) {
        if(dataBounds[0][j] > dataBounds[1][j]) {
            dataScale[j] = 1.0;
        }
        else {
            if(dataBounds[1][j] === dataBounds[0][j]) {
                dataScale[j] = 1.0;
            }
            else {
                dataScale[j] = 1.0 / (dataBounds[1][j] - dataBounds[0][j]);
            }
        }
    }

    // Save scale
    this.dataScale = dataScale;

    // Update traces
    for(i = 0; i < sceneData.length; ++i) {
        data = sceneData[i];
        if(data.visible !== true) {
            continue;
        }
        trace = this.traces[data.uid];
        if(trace) {
            trace.update(data);
        } else {
            trace = data._module.plot(this, data);
            this.traces[data.uid] = trace;
        }
        trace.name = data.name;
    }

    // Remove empty traces
    var traceIds = Object.keys(this.traces);

    trace_id_loop:
    for(i = 0; i < traceIds.length; ++i) {
        for(j = 0; j < sceneData.length; ++j) {
            if(sceneData[j].uid === traceIds[i] && sceneData[j].visible === true) {
                continue trace_id_loop;
            }
        }
        trace = this.traces[traceIds[i]];
        trace.dispose();
        delete this.traces[traceIds[i]];
    }

    // Update ranges (needs to be called *after* objects are added due to updates)
    var sceneBounds = [[0, 0, 0], [0, 0, 0]],
        axisDataRange = [],
        axisTypeRatios = {};

    for(i = 0; i < 3; ++i) {
        axis = fullSceneLayout[axisProperties[i]];
        axisType = axis.type;

        if(axisType in axisTypeRatios) {
            axisTypeRatios[axisType].acc *= dataScale[i];
            axisTypeRatios[axisType].count += 1;
        }
        else {
            axisTypeRatios[axisType] = {
                acc: dataScale[i],
                count: 1
            };
        }

        if(axis.autorange) {
            sceneBounds[0][i] = Infinity;
            sceneBounds[1][i] = -Infinity;
            for(j = 0; j < this.glplot.objects.length; ++j) {
                var objBounds = this.glplot.objects[j].bounds;
                sceneBounds[0][i] = Math.min(sceneBounds[0][i],
                  objBounds[0][i] / dataScale[i]);
                sceneBounds[1][i] = Math.max(sceneBounds[1][i],
                  objBounds[1][i] / dataScale[i]);
            }
            if('rangemode' in axis && axis.rangemode === 'tozero') {
                sceneBounds[0][i] = Math.min(sceneBounds[0][i], 0);
                sceneBounds[1][i] = Math.max(sceneBounds[1][i], 0);
            }
            if(sceneBounds[0][i] > sceneBounds[1][i]) {
                sceneBounds[0][i] = -1;
                sceneBounds[1][i] = 1;
            } else {
                var d = sceneBounds[1][i] - sceneBounds[0][i];
                sceneBounds[0][i] -= d / 32.0;
                sceneBounds[1][i] += d / 32.0;
            }
        } else {
            var range = fullSceneLayout[axisProperties[i]].range;
            sceneBounds[0][i] = range[0];
            sceneBounds[1][i] = range[1];
        }
        if(sceneBounds[0][i] === sceneBounds[1][i]) {
            sceneBounds[0][i] -= 1;
            sceneBounds[1][i] += 1;
        }
        axisDataRange[i] = sceneBounds[1][i] - sceneBounds[0][i];

        // Update plot bounds
        this.glplot.bounds[0][i] = sceneBounds[0][i] * dataScale[i];
        this.glplot.bounds[1][i] = sceneBounds[1][i] * dataScale[i];
    }

    var axesScaleRatio = [1, 1, 1];

    // Compute axis scale per category
    for(i = 0; i < 3; ++i) {
        axis = fullSceneLayout[axisProperties[i]];
        axisType = axis.type;
        var axisRatio = axisTypeRatios[axisType];
        axesScaleRatio[i] = Math.pow(axisRatio.acc, 1.0 / axisRatio.count) / dataScale[i];
    }

    /*
     * Dynamically set the aspect ratio depending on the users aspect settings
     */
    var axisAutoScaleFactor = 4;
    var aspectRatio;

    if(fullSceneLayout.aspectmode === 'auto') {

        if(Math.max.apply(null, axesScaleRatio) / Math.min.apply(null, axesScaleRatio) <= axisAutoScaleFactor) {

            /*
             * USE DATA MODE WHEN AXIS RANGE DIMENSIONS ARE RELATIVELY EQUAL
             */

            aspectRatio = axesScaleRatio;
        } else {

            /*
             * USE EQUAL MODE WHEN AXIS RANGE DIMENSIONS ARE HIGHLY UNEQUAL
             */
            aspectRatio = [1, 1, 1];
        }

    } else if(fullSceneLayout.aspectmode === 'cube') {
        aspectRatio = [1, 1, 1];

    } else if(fullSceneLayout.aspectmode === 'data') {
        aspectRatio = axesScaleRatio;

    } else if(fullSceneLayout.aspectmode === 'manual') {
        var userRatio = fullSceneLayout.aspectratio;
        aspectRatio = [userRatio.x, userRatio.y, userRatio.z];

    } else {
        throw new Error('scene.js aspectRatio was not one of the enumerated types');
    }

    /*
     * Write aspect Ratio back to user data and fullLayout so that it is modifies as user
     * manipulates the aspectmode settings and the fullLayout is up-to-date.
     */
    fullSceneLayout.aspectratio.x = sceneLayout.aspectratio.x = aspectRatio[0];
    fullSceneLayout.aspectratio.y = sceneLayout.aspectratio.y = aspectRatio[1];
    fullSceneLayout.aspectratio.z = sceneLayout.aspectratio.z = aspectRatio[2];

    /*
     * Finally assign the computed aspecratio to the glplot module. This will have an effect
     * on the next render cycle.
     */
    this.glplot.aspect = aspectRatio;


    // Update frame position for multi plots
    var domain = fullSceneLayout.domain || null,
        size = fullLayout._size || null;

    if(domain && size) {
        var containerStyle = this.container.style;
        containerStyle.position = 'absolute';
        containerStyle.left = (size.l + domain.x[0] * size.w) + 'px';
        containerStyle.top = (size.t + (1 - domain.y[1]) * size.h) + 'px';
        containerStyle.width = (size.w * (domain.x[1] - domain.x[0])) + 'px';
        containerStyle.height = (size.h * (domain.y[1] - domain.y[0])) + 'px';
    }

    // force redraw so that promise is returned when rendering is completed
    this.glplot.redraw();
};

proto.destroy = function() {
    this.glplot.dispose();
    this.container.parentNode.removeChild(this.container);

    // Remove reference to glplot
    this.glplot = null;
};


// for reset camera button in mode bar
proto.setCameraToDefault = function setCameraToDefault() {
    // as in Gl3d.layoutAttributes

    this.setCamera({
        eye: { x: 1.25, y: 1.25, z: 1.25 },
        center: { x: 0, y: 0, z: 0 },
        up: { x: 0, y: 0, z: 1 }
    });
};

// getOrbitCamera :: plotly_coords -> orbit_camera_coords
// inverse of getLayoutCamera
function getOrbitCamera(camera) {
    return [
        [camera.eye.x, camera.eye.y, camera.eye.z],
        [camera.center.x, camera.center.y, camera.center.z],
        [camera.up.x, camera.up.y, camera.up.z]
    ];
}

// getLayoutCamera :: orbit_camera_coords -> plotly_coords
// inverse of getOrbitCamera
function getLayoutCamera(camera) {
    return {
        up: {x: camera.up[0], y: camera.up[1], z: camera.up[2]},
        center: {x: camera.center[0], y: camera.center[1], z: camera.center[2]},
        eye: {x: camera.eye[0], y: camera.eye[1], z: camera.eye[2]}
    };
}

// get camera position in plotly coords from 'orbit-camera' coords
proto.getCamera = function getCamera() {
    this.glplot.camera.view.recalcMatrix(this.camera.view.lastT());
    return getLayoutCamera(this.glplot.camera);
};

// set camera position with a set of plotly coords
proto.setCamera = function setCamera(cameraData) {

    var update = {};

    update[this.id] = cameraData;

    this.glplot.camera.lookAt.apply(this, getOrbitCamera(cameraData));
    this.graphDiv.emit('plotly_relayout', update);
};

// save camera to user layout (i.e. gd.layout)
proto.saveCamera = function saveCamera(layout) {
    var cameraData = this.getCamera(),
        cameraNestedProp = Lib.nestedProperty(layout, this.id + '.camera'),
        cameraDataLastSave = cameraNestedProp.get(),
        hasChanged = false;

    function same(x, y, i, j) {
        var vectors = ['up', 'center', 'eye'],
            components = ['x', 'y', 'z'];
        return y[vectors[i]] && (x[vectors[i]][components[j]] === y[vectors[i]][components[j]]);
    }

    if(cameraDataLastSave === undefined) hasChanged = true;
    else {
        for(var i = 0; i < 3; i++) {
            for(var j = 0; j < 3; j++) {
                if(!same(cameraData, cameraDataLastSave, i, j)) {
                    hasChanged = true;
                    break;
                }
            }
        }
    }

    if(hasChanged) cameraNestedProp.set(cameraData);

    return hasChanged;
};

proto.updateFx = function(dragmode, hovermode) {
    var camera = this.camera;

    if(camera) {
        // rotate and orbital are synonymous
        if(dragmode === 'orbit') {
            camera.mode = 'orbit';
            camera.keyBindingMode = 'rotate';

        } else if(dragmode === 'turntable') {
            camera.up = [0, 0, 1];
            camera.mode = 'turntable';
            camera.keyBindingMode = 'rotate';

        } else {

            // none rotation modes [pan or zoom]
            camera.keyBindingMode = dragmode;
        }
    }

    // to put dragmode and hovermode on the same grounds from relayout
    this.fullSceneLayout.hovermode = hovermode;
};

proto.toImage = function(format) {
    if(!format) format = 'png';

    if(this.staticMode) this.container.appendChild(STATIC_CANVAS);

    // Force redraw
    this.glplot.redraw();

    // Grab context and yank out pixels
    var gl = this.glplot.gl;
    var w = gl.drawingBufferWidth;
    var h = gl.drawingBufferHeight;

    gl.bindFramebuffer(gl.FRAMEBUFFER, null);

    var pixels = new Uint8Array(w * h * 4);
    gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, pixels);

    // Flip pixels
    for(var j = 0, k = h - 1; j < k; ++j, --k) {
        for(var i = 0; i < w; ++i) {
            for(var l = 0; l < 4; ++l) {
                var tmp = pixels[4 * (w * j + i) + l];
                pixels[4 * (w * j + i) + l] = pixels[4 * (w * k + i) + l];
                pixels[4 * (w * k + i) + l] = tmp;
            }
        }
    }

    var canvas = document.createElement('canvas');
    canvas.width = w;
    canvas.height = h;
    var context = canvas.getContext('2d');
    var imageData = context.createImageData(w, h);
    imageData.data.set(pixels);
    context.putImageData(imageData, 0, 0);

    var dataURL;

    switch(format) {
        case 'jpeg':
            dataURL = canvas.toDataURL('image/jpeg');
            break;
        case 'webp':
            dataURL = canvas.toDataURL('image/webp');
            break;
        default:
            dataURL = canvas.toDataURL('image/png');
    }

    if(this.staticMode) this.container.removeChild(STATIC_CANVAS);

    return dataURL;
};

module.exports = Scene;

},{"../../lib":610,"../../lib/show_no_webgl_msg":622,"../../lib/str2rgbarray":624,"../../plots/cartesian/axes":642,"../../plots/cartesian/graph_interact":649,"./camera":680,"./layout/convert":685,"./layout/spikes":688,"./layout/tick_marks":689,"./project":690,"./set_convert":692,"gl-plot3d":196,"webgl-context":1015}],692:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../cartesian/axes');


module.exports = function setConvert(containerOut) {
    Axes.setConvert(containerOut);
    containerOut.setScale = Lib.noop;
};

},{"../../lib":610,"../cartesian/axes":642}],693:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');
var extendFlat = Lib.extendFlat;

var fontAttrs = require('./font_attributes');
var colorAttrs = require('../components/color/attributes');

module.exports = {
    font: {
        family: extendFlat({}, fontAttrs.family, {
            dflt: '"Open Sans", verdana, arial, sans-serif'
        }),
        size: extendFlat({}, fontAttrs.size, {
            dflt: 12
        }),
        color: extendFlat({}, fontAttrs.color, {
            dflt: colorAttrs.defaultLine
        }),
        description: [
            'Sets the global font.',
            'Note that fonts used in traces and other',
            'layout components inherit from the global font.'
        ].join(' ')
    },
    title: {
        valType: 'string',
        role: 'info',
        dflt: 'Click to enter Plot title',
        description: [
            'Sets the plot\'s title.'
        ].join(' ')
    },
    titlefont: extendFlat({}, fontAttrs, {
        description: 'Sets the title font.'
    }),
    autosize: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: [
            'Determines whether or not a layout width or height',
            'that has been left undefined by the user',
            'is initialized on each relayout.',

            'Note that, regardless of this attribute,',
            'an undefined layout width or height',
            'is always initialized on the first call to plot.'
        ].join(' ')
    },
    width: {
        valType: 'number',
        role: 'info',
        min: 10,
        dflt: 700,
        description: [
            'Sets the plot\'s width (in px).'
        ].join(' ')
    },
    height: {
        valType: 'number',
        role: 'info',
        min: 10,
        dflt: 450,
        description: [
            'Sets the plot\'s height (in px).'
        ].join(' ')
    },
    margin: {
        l: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 80,
            description: 'Sets the left margin (in px).'
        },
        r: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 80,
            description: 'Sets the right margin (in px).'
        },
        t: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 100,
            description: 'Sets the top margin (in px).'
        },
        b: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 80,
            description: 'Sets the bottom margin (in px).'
        },
        pad: {
            valType: 'number',
            role: 'info',
            min: 0,
            dflt: 0,
            description: [
                'Sets the amount of padding (in px)',
                'between the plotting area and the axis lines'
            ].join(' ')
        },
        autoexpand: {
            valType: 'boolean',
            role: 'info',
            dflt: true
        }
    },
    paper_bgcolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.background,
        description: 'Sets the color of paper where the graph is drawn.'
    },
    plot_bgcolor: {
        // defined here, but set in Axes.supplyLayoutDefaults
        // because it needs to know if there are (2D) axes or not
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.background,
        description: [
            'Sets the color of plotting area in-between x and y axes.'
        ].join(' ')
    },
    separators: {
        valType: 'string',
        role: 'style',
        dflt: '.,',
        description: [
            'Sets the decimal and thousand separators.',
            'For example, *. * puts a \'.\' before decimals and',
            'a space between thousands.'
        ].join(' ')
    },
    hidesources: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: [
            'Determines whether or not a text link citing the data source is',
            'placed at the bottom-right cored of the figure.',
            'Has only an effect only on graphs that have been generated via',
            'forked graphs from the plotly service (at https://plot.ly or on-premise).'
        ].join(' ')
    },
    smith: {
        // will become a boolean if/when we implement this
        valType: 'enumerated',
        role: 'info',
        values: [false],
        dflt: false
    },
    showlegend: {
        // handled in legend.supplyLayoutDefaults
        // but included here because it's not in the legend object
        valType: 'boolean',
        role: 'info',
        description: 'Determines whether or not a legend is drawn.'
    },
    dragmode: {
        valType: 'enumerated',
        role: 'info',
        values: ['zoom', 'pan', 'select', 'lasso', 'orbit', 'turntable'],
        dflt: 'zoom',
        description: [
            'Determines the mode of drag interactions.',
            '*select* and *lasso* apply only to scatter traces with',
            'markers or text. *orbit* and *turntable* apply only to',
            '3D scenes.'
        ].join(' ')
    },
    hovermode: {
        valType: 'enumerated',
        role: 'info',
        values: ['x', 'y', 'closest', false],
        description: 'Determines the mode of hover interactions.'
    }
};

},{"../components/color/attributes":509,"../lib":610,"./font_attributes":662}],694:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    styleUrlPrefix: 'mapbox://styles/mapbox/',
    styleUrlSuffix: 'v9',

    controlContainerClassName: 'mapboxgl-control-container',

    noAccessTokenErrorMsg: [
        'Missing Mapbox access token.',
        'Mapbox trace type require a Mapbox access token to be registered.',
        'For example:',
        '  Plotly.plot(gd, data, layout, { mapboxAccessToken: \'my-access-token\' });',
        'More info here: https://www.mapbox.com/help/define-access-token/'
    ].join('\n'),

    mapOnErrorMsg: 'Mapbox error.'
};

},{}],695:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


/**
 * Convert plotly.js 'textposition' to mapbox-gl 'anchor' and 'offset'
 * (with the help of the icon size).
 *
 * @param {string} textpostion : plotly.js textposition value
 * @param {number} iconSize : plotly.js icon size (e.g. marker.size for traces)
 *
 * @return {object}
 *      - anchor
 *      - offset
 */
module.exports = function convertTextOpts(textposition, iconSize) {
    var parts = textposition.split(' '),
        vPos = parts[0],
        hPos = parts[1];

    // ballpack values
    var factor = Array.isArray(iconSize) ? Lib.mean(iconSize) : iconSize,
        xInc = 0.5 + (factor / 100),
        yInc = 1.5 + (factor / 100);

    var anchorVals = ['', ''],
        offset = [0, 0];

    switch(vPos) {
        case 'top':
            anchorVals[0] = 'top';
            offset[1] = -yInc;
            break;
        case 'bottom':
            anchorVals[0] = 'bottom';
            offset[1] = yInc;
            break;
    }

    switch(hPos) {
        case 'left':
            anchorVals[1] = 'right';
            offset[0] = -xInc;
            break;
        case 'right':
            anchorVals[1] = 'left';
            offset[0] = xInc;
            break;
    }

    // Mapbox text-anchor must be one of:
    //  center, left, right, top, bottom,
    //  top-left, top-right, bottom-left, bottom-right

    var anchor;
    if(anchorVals[0] && anchorVals[1]) anchor = anchorVals.join('-');
    else if(anchorVals[0]) anchor = anchorVals[0];
    else if(anchorVals[1]) anchor = anchorVals[1];
    else anchor = 'center';

    return { anchor: anchor, offset: offset };
};

},{"../../lib":610}],696:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var mapboxgl = require('mapbox-gl');

var Plots = require('../plots');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');

var createMapbox = require('./mapbox');
var constants = require('./constants');


exports.name = 'mapbox';

exports.attr = 'subplot';

exports.idRoot = 'mapbox';

exports.idRegex = /^mapbox([2-9]|[1-9][0-9]+)?$/;

exports.attrRegex = /^mapbox([2-9]|[1-9][0-9]+)?$/;

exports.attributes = {
    subplot: {
        valType: 'subplotid',
        role: 'info',
        dflt: 'mapbox',
        description: [
            'Sets a reference between this trace\'s data coordinates and',
            'a mapbox subplot.',
            'If *mapbox* (the default value), the data refer to `layout.mapbox`.',
            'If *mapbox2*, the data refer to `layout.mapbox2`, and so on.'
        ].join(' ')
    }
};

exports.layoutAttributes = require('./layout_attributes');

exports.supplyLayoutDefaults = require('./layout_defaults');

exports.plot = function plotMapbox(gd) {
    var fullLayout = gd._fullLayout,
        calcData = gd.calcdata,
        mapboxIds = Plots.getSubplotIds(fullLayout, 'mapbox');

    var accessToken = findAccessToken(gd, mapboxIds);
    mapboxgl.accessToken = accessToken;

    for(var i = 0; i < mapboxIds.length; i++) {
        var id = mapboxIds[i],
            subplotCalcData = getSubplotCalcData(calcData, id),
            opts = fullLayout[id],
            mapbox = opts._subplot;

        // copy access token to fullLayout (to handle the context case)
        opts.accesstoken = accessToken;

        if(!mapbox) {
            mapbox = createMapbox({
                gd: gd,
                container: fullLayout._glcontainer.node(),
                id: id,
                fullLayout: fullLayout,
                staticPlot: gd._context.staticPlot
            });

            fullLayout[id]._subplot = mapbox;
        }

        mapbox.plot(subplotCalcData, fullLayout, gd._promises);
    }
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldMapboxKeys = Plots.getSubplotIds(oldFullLayout, 'mapbox');

    for(var i = 0; i < oldMapboxKeys.length; i++) {
        var oldMapboxKey = oldMapboxKeys[i];

        if(!newFullLayout[oldMapboxKey] && !!oldFullLayout[oldMapboxKey]._subplot) {
            oldFullLayout[oldMapboxKey]._subplot.destroy();
        }
    }
};

exports.toSVG = function(gd) {
    var fullLayout = gd._fullLayout,
        subplotIds = Plots.getSubplotIds(fullLayout, 'mapbox'),
        size = fullLayout._size;

    for(var i = 0; i < subplotIds.length; i++) {
        var opts = fullLayout[subplotIds[i]],
            domain = opts.domain,
            mapbox = opts._subplot;

        var imageData = mapbox.toImage('png');
        var image = fullLayout._glimages.append('svg:image');

        image.attr({
            xmlns: xmlnsNamespaces.svg,
            'xlink:href': imageData,
            x: size.l + size.w * domain.x[0],
            y: size.t + size.h * (1 - domain.y[1]),
            width: size.w * (domain.x[1] - domain.x[0]),
            height: size.h * (domain.y[1] - domain.y[0]),
            preserveAspectRatio: 'none'
        });

        mapbox.destroy();
    }
};

function getSubplotCalcData(calcData, id) {
    var subplotCalcData = [];

    for(var i = 0; i < calcData.length; i++) {
        var calcTrace = calcData[i],
            trace = calcTrace[0].trace;

        if(trace.subplot === id) subplotCalcData.push(calcTrace);
    }

    return subplotCalcData;
}

function findAccessToken(gd, mapboxIds) {
    var fullLayout = gd._fullLayout,
        context = gd._context;

    // special case for Mapbox Atlas users
    if(context.mapboxAccessToken === '') return '';

    // first look for access token in context
    var accessToken = context.mapboxAccessToken;

    // allow mapbox layout options to override it
    for(var i = 0; i < mapboxIds.length; i++) {
        var opts = fullLayout[mapboxIds[i]];

        if(opts.accesstoken) {
            accessToken = opts.accesstoken;
            break;
        }
    }

    if(!accessToken) {
        throw new Error(constants.noAccessTokenErrorMsg);
    }

    return accessToken;
}

},{"../../constants/xmlns_namespaces":595,"../plots":702,"./constants":694,"./layout_attributes":698,"./layout_defaults":699,"./mapbox":700,"mapbox-gl":319}],697:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var convertTextOpts = require('./convert_text_opts');


function MapboxLayer(mapbox, index) {
    this.mapbox = mapbox;
    this.map = mapbox.map;

    this.uid = mapbox.uid + '-' + 'layer' + index;

    this.idSource = this.uid + '-source';
    this.idLayer = this.uid + '-layer';

    // some state variable to check if a remove/add step is needed
    this.sourceType = null;
    this.source = null;
    this.layerType = null;
    this.below = null;

    // is layer currently visible
    this.visible = false;
}

var proto = MapboxLayer.prototype;

proto.update = function update(opts) {
    if(!this.visible) {

        // IMPORTANT: must create source before layer to not cause errors
        this.updateSource(opts);
        this.updateLayer(opts);
    }
    else if(this.needsNewSource(opts)) {

        // IMPORTANT: must delete layer before source to not cause errors
        this.updateLayer(opts);
        this.updateSource(opts);
    }
    else if(this.needsNewLayer(opts)) {
        this.updateLayer(opts);
    }

    this.updateStyle(opts);

    this.visible = isVisible(opts);
};

proto.needsNewSource = function(opts) {

    // for some reason changing layer to 'fill' or 'symbol'
    // w/o changing the source throws an exception in mapbox-gl 0.18 ;
    // stay safe and make new source on type changes

    return (
        this.sourceType !== opts.sourcetype ||
        this.source !== opts.source ||
        this.layerType !== opts.type
    );
};

proto.needsNewLayer = function(opts) {
    return (
        this.layerType !== opts.type ||
        this.below !== opts.below
    );
};

proto.updateSource = function(opts) {
    var map = this.map;

    if(map.getSource(this.idSource)) map.removeSource(this.idSource);

    this.sourceType = opts.sourcetype;
    this.source = opts.source;

    if(!isVisible(opts)) return;

    var sourceOpts = convertSourceOpts(opts);

    map.addSource(this.idSource, sourceOpts);
};

proto.updateLayer = function(opts) {
    var map = this.map;

    if(map.getLayer(this.idLayer)) map.removeLayer(this.idLayer);

    this.layerType = opts.type;

    if(!isVisible(opts)) return;

    map.addLayer({
        id: this.idLayer,
        source: this.idSource,
        'source-layer': opts.sourcelayer || '',
        type: opts.type
    }, opts.below);

    // the only way to make a layer invisible is to remove it
    var layoutOpts = { visibility: 'visible' };
    this.mapbox.setOptions(this.idLayer, 'setLayoutProperty', layoutOpts);
};

proto.updateStyle = function(opts) {
    var convertedOpts = convertOpts(opts);

    if(isVisible(opts)) {
        this.mapbox.setOptions(this.idLayer, 'setLayoutProperty', convertedOpts.layout);
        this.mapbox.setOptions(this.idLayer, 'setPaintProperty', convertedOpts.paint);
    }
};

proto.dispose = function dispose() {
    var map = this.map;

    map.removeLayer(this.idLayer);
    map.removeSource(this.idSource);
};

function isVisible(opts) {
    var source = opts.source;

    return (
        Lib.isPlainObject(source) ||
        (typeof source === 'string' && source.length > 0)
    );
}

function convertOpts(opts) {
    var layout = {},
        paint = {};

    switch(opts.type) {

        case 'circle':
            Lib.extendFlat(paint, {
                'circle-radius': opts.circle.radius,
                'circle-color': opts.color,
                'circle-opacity': opts.opacity
            });
            break;

        case 'line':
            Lib.extendFlat(paint, {
                'line-width': opts.line.width,
                'line-color': opts.color,
                'line-opacity': opts.opacity
            });
            break;

        case 'fill':
            Lib.extendFlat(paint, {
                'fill-color': opts.color,
                'fill-outline-color': opts.fill.outlinecolor,
                'fill-opacity': opts.opacity

                // no way to pass specify outline width at the moment
            });
            break;

        case 'symbol':
            var symbol = opts.symbol,
                textOpts = convertTextOpts(symbol.textposition, symbol.iconsize);

            Lib.extendFlat(layout, {
                'icon-image': symbol.icon + '-15',
                'icon-size': symbol.iconsize / 10,

                'text-field': symbol.text,
                'text-size': symbol.textfont.size,
                'text-anchor': textOpts.anchor,
                'text-offset': textOpts.offset

                // TODO font family
                // 'text-font': symbol.textfont.family.split(', '),
            });

            Lib.extendFlat(paint, {
                'icon-color': opts.color,
                'text-color': symbol.textfont.color,
                'text-opacity': opts.opacity
            });
            break;
    }

    return { layout: layout, paint: paint };
}

function convertSourceOpts(opts) {
    var sourceType = opts.sourcetype,
        source = opts.source,
        sourceOpts = { type: sourceType },
        isSourceAString = (typeof source === 'string'),
        field;

    if(sourceType === 'geojson') field = 'data';
    else if(sourceType === 'vector') {
        field = isSourceAString ? 'url' : 'tiles';
    }

    sourceOpts[field] = source;

    return sourceOpts;
}

module.exports = function createMapboxLayer(mapbox, index, opts) {
    var mapboxLayer = new MapboxLayer(mapbox, index);

    mapboxLayer.update(opts);

    return mapboxLayer;
};

},{"../../lib":610,"./convert_text_opts":695}],698:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var defaultLine = require('../../components/color').defaultLine;
var fontAttrs = require('../font_attributes');
var textposition = require('../../traces/scatter/attributes').textposition;


module.exports = {
    domain: {
        x: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the horizontal domain of this subplot',
                '(in plot fraction).'
            ].join(' ')
        },
        y: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the vertical domain of this subplot',
                '(in plot fraction).'
            ].join(' ')
        }
    },

    accesstoken: {
        valType: 'string',
        noBlank: true,
        strict: true,
        role: 'info',
        description: [
            'Sets the mapbox access token to be used for this mapbox map.',
            'Alternatively, the mapbox access token can be set in the',
            'configuration options under `mapboxAccessToken`.'
        ].join(' ')
    },
    style: {
        valType: 'any',
        values: ['basic', 'streets', 'outdoors', 'light', 'dark', 'satellite', 'satellite-streets'],
        dflt: 'basic',
        role: 'style',
        description: [
            'Sets the Mapbox map style.',
            'Either input one of the default Mapbox style names or the URL to a custom style',
            'or a valid Mapbox style JSON.'
        ].join(' ')
    },

    center: {
        lon: {
            valType: 'number',
            dflt: 0,
            role: 'info',
            description: 'Sets the longitude of the center of the map (in degrees East).'
        },
        lat: {
            valType: 'number',
            dflt: 0,
            role: 'info',
            description: 'Sets the latitude of the center of the map (in degrees North).'
        }
    },
    zoom: {
        valType: 'number',
        dflt: 1,
        role: 'info',
        description: 'Sets the zoom level of the map.'
    },
    bearing: {
        valType: 'number',
        dflt: 0,
        role: 'info',
        description: 'Sets the bearing angle of the map (in degrees counter-clockwise from North).'
    },
    pitch: {
        valType: 'number',
        dflt: 0,
        role: 'info',
        description: [
            'Sets the pitch angle of the map',
            '(in degrees, where *0* means perpendicular to the surface of the map).'
        ].join(' ')
    },

    layers: {
        _isLinkedToArray: 'layer',

        sourcetype: {
            valType: 'enumerated',
            values: ['geojson', 'vector'],
            dflt: 'geojson',
            role: 'info',
            description: [
                'Sets the source type for this layer.',
                'Support for *raster*, *image* and *video* source types is coming soon.'
            ].join(' ')
        },

        source: {
            valType: 'any',
            role: 'info',
            description: [
                'Sets the source data for this layer.',
                'Source can be either a URL,',
                'a geojson object (with `sourcetype` set to *geojson*)',
                'or an array of tile URLS (with `sourcetype` set to *vector*).'
            ].join(' ')
        },

        sourcelayer: {
            valType: 'string',
            dflt: '',
            role: 'info',
            description: [
                'Specifies the layer to use from a vector tile source.',
                'Required for *vector* source type that supports multiple layers.'
            ].join(' ')
        },

        type: {
            valType: 'enumerated',
            values: ['circle', 'line', 'fill', 'symbol'],
            dflt: 'circle',
            role: 'info',
            description: [
                'Sets the layer type.',
                'Support for *raster*, *background* types is coming soon.',
                'Note that *line* and *fill* are not compatible with Point',
                'GeoJSON geometries.'
            ].join(' ')
        },

        // attributes shared between all types
        below: {
            valType: 'string',
            dflt: '',
            role: 'info',
            description: [
                'Determines if the layer will be inserted',
                'before the layer with the specified ID.',
                'If omitted or set to \'\',',
                'the layer will be inserted above every existing layer.'
            ].join(' ')
        },
        color: {
            valType: 'color',
            dflt: defaultLine,
            role: 'style',
            description: [
                'Sets the primary layer color.',
                'If `type` is *circle*, color corresponds to the circle color',
                'If `type` is *line*, color corresponds to the line color',
                'If `type` is *fill*, color corresponds to the fill color',
                'If `type` is *symbol*, color corresponds to the icon color'
            ].join(' ')
        },
        opacity: {
            valType: 'number',
            min: 0,
            max: 1,
            dflt: 1,
            role: 'info',
            description: 'Sets the opacity of the layer.'
        },

        // type-specific style attributes
        circle: {
            radius: {
                valType: 'number',
                dflt: 15,
                role: 'style',
                description: [
                    'Sets the circle radius.',
                    'Has an effect only when `type` is set to *circle*.'
                ].join(' ')
            }
        },

        line: {
            width: {
                valType: 'number',
                dflt: 2,
                role: 'style',
                description: [
                    'Sets the line width.',
                    'Has an effect only when `type` is set to *line*.'
                ].join(' ')
            }
        },

        fill: {
            outlinecolor: {
                valType: 'color',
                dflt: defaultLine,
                role: 'style',
                description: [
                    'Sets the fill outline color.',
                    'Has an effect only when `type` is set to *fill*.'
                ].join(' ')
            }
        },

        symbol: {
            icon: {
                valType: 'string',
                dflt: 'marker',
                role: 'style',
                description: [
                    'Sets the symbol icon image.',
                    'Full list: https://www.mapbox.com/maki-icons/'
                ].join(' ')
            },
            iconsize: {
                valType: 'number',
                dflt: 10,
                role: 'style',
                description: [
                    'Sets the symbol icon size.',
                    'Has an effect only when `type` is set to *symbol*.'
                ].join(' ')
            },
            text: {
                valType: 'string',
                dflt: '',
                role: 'info',
                description: [
                    'Sets the symbol text.'
                ].join(' ')
            },
            textfont: Lib.extendDeep({}, fontAttrs, {
                description: [
                    'Sets the icon text font.',
                    'Has an effect only when `type` is set to *symbol*.'
                ].join(' '),
                family: {
                    dflt: 'Open Sans Regular, Arial Unicode MS Regular'
                }
            }),
            textposition: Lib.extendFlat({}, textposition, { arrayOk: false })
        }
    }

};

},{"../../components/color":510,"../../lib":610,"../../traces/scatter/attributes":834,"../font_attributes":662}],699:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var handleSubplotDefaults = require('../subplot_defaults');
var layoutAttributes = require('./layout_attributes');


module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    handleSubplotDefaults(layoutIn, layoutOut, fullData, {
        type: 'mapbox',
        attributes: layoutAttributes,
        handleDefaults: handleDefaults,
        partition: 'y'
    });
};

function handleDefaults(containerIn, containerOut, coerce) {
    coerce('accesstoken');
    coerce('style');
    coerce('center.lon');
    coerce('center.lat');
    coerce('zoom');
    coerce('bearing');
    coerce('pitch');

    handleLayerDefaults(containerIn, containerOut);

    // copy ref to input container to update 'center' and 'zoom' on map move
    containerOut._input = containerIn;
}

function handleLayerDefaults(containerIn, containerOut) {
    var layersIn = containerIn.layers || [],
        layersOut = containerOut.layers = [];

    var layerIn, layerOut;

    function coerce(attr, dflt) {
        return Lib.coerce(layerIn, layerOut, layoutAttributes.layers, attr, dflt);
    }

    for(var i = 0; i < layersIn.length; i++) {
        layerIn = layersIn[i];
        layerOut = {};

        if(!Lib.isPlainObject(layerIn)) continue;

        var sourceType = coerce('sourcetype');
        coerce('source');

        if(sourceType === 'vector') coerce('sourcelayer');

        // maybe add smart default based off GeoJSON geometry?
        var type = coerce('type');

        coerce('below');
        coerce('color');
        coerce('opacity');

        if(type === 'circle') {
            coerce('circle.radius');
        }

        if(type === 'line') {
            coerce('line.width');
        }

        if(type === 'fill') {
            coerce('fill.outlinecolor');
        }

        if(type === 'symbol') {
            coerce('symbol.icon');
            coerce('symbol.iconsize');

            coerce('symbol.text');
            Lib.coerceFont(coerce, 'symbol.textfont');
            coerce('symbol.textposition');
        }

        layerOut._index = i;
        layersOut.push(layerOut);
    }
}

},{"../../lib":610,"../subplot_defaults":709,"./layout_attributes":698}],700:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var mapboxgl = require('mapbox-gl');

var Fx = require('../cartesian/graph_interact');
var Lib = require('../../lib');
var constants = require('./constants');
var layoutAttributes = require('./layout_attributes');
var createMapboxLayer = require('./layers');


function Mapbox(opts) {
    this.id = opts.id;
    this.gd = opts.gd;
    this.container = opts.container;
    this.isStatic = opts.staticPlot;

    var fullLayout = opts.fullLayout;

    // unique id for this Mapbox instance
    this.uid = fullLayout._uid + '-' + this.id;

    // full mapbox options (N.B. needs to be updated on every updates)
    this.opts = fullLayout[this.id];

    // create framework on instantiation for a smoother first plot call
    this.div = null;
    this.xaxis = null;
    this.yaxis = null;
    this.createFramework(fullLayout);

    // state variables used to infer how and what to update
    this.map = null;
    this.accessToken = null;
    this.styleObj = null;
    this.traceHash = {};
    this.layerList = [];
}

var proto = Mapbox.prototype;

module.exports = function createMapbox(opts) {
    var mapbox = new Mapbox(opts);

    return mapbox;
};

proto.plot = function(calcData, fullLayout, promises) {
    var self = this;

    // feed in new mapbox options
    var opts = self.opts = fullLayout[this.id];

    // remove map and create a new map if access token has change
    if(self.map && (opts.accesstoken !== self.accessToken)) {
        self.map.remove();
        self.map = null;
        self.styleObj = null;
        self.traceHash = [];
        self.layerList = {};
    }

    var promise;

    if(!self.map) {
        promise = new Promise(function(resolve, reject) {
            self.createMap(calcData, fullLayout, resolve, reject);
        });
    }
    else {
        promise = new Promise(function(resolve, reject) {
            self.updateMap(calcData, fullLayout, resolve, reject);
        });
    }

    promises.push(promise);
};

proto.createMap = function(calcData, fullLayout, resolve, reject) {
    var self = this,
        gd = self.gd,
        opts = self.opts;

    // store style id and URL or object
    var styleObj = self.styleObj = getStyleObj(opts.style);

    // store access token associated with this map
    self.accessToken = opts.accesstoken;

    // create the map!
    var map = self.map = new mapboxgl.Map({
        container: self.div,

        style: styleObj.style,
        center: convertCenter(opts.center),
        zoom: opts.zoom,
        bearing: opts.bearing,
        pitch: opts.pitch,

        interactive: !self.isStatic,
        preserveDrawingBuffer: self.isStatic
    });

    // clear navigation container
    var className = constants.controlContainerClassName,
        controlContainer = self.div.getElementsByClassName(className)[0];
    self.div.removeChild(controlContainer);

    self.rejectOnError(reject);

    map.once('load', function() {
        self.updateData(calcData);
        self.updateLayout(fullLayout);

        self.resolveOnRender(resolve);
    });

    // keep track of pan / zoom in user layout and emit relayout event
    map.on('moveend', function(eventData) {
        if(!self.map) return;

        var view = self.getView();

        opts._input.center = opts.center = view.center;
        opts._input.zoom = opts.zoom = view.zoom;
        opts._input.bearing = opts.bearing = view.bearing;
        opts._input.pitch = opts.pitch = view.pitch;

        // 'moveend' gets triggered by map.setCenter, map.setZoom,
        // map.setBearing and map.setPitch.
        //
        // Here, we make sure that 'plotly_relayout' is
        // triggered here only when the 'moveend' originates from a
        // mouse target (filtering out API calls) to not
        // duplicate 'plotly_relayout' events.

        if(eventData.originalEvent) {
            var update = {};
            update[self.id] = Lib.extendFlat({}, view);
            gd.emit('plotly_relayout', update);
        }
    });

    map.on('mousemove', function(evt) {
        var bb = self.div.getBoundingClientRect();

        // some hackery to get Fx.hover to work

        evt.clientX = evt.point.x + bb.left;
        evt.clientY = evt.point.y + bb.top;

        evt.target.getBoundingClientRect = function() { return bb; };

        self.xaxis.p2c = function() { return evt.lngLat.lng; };
        self.yaxis.p2c = function() { return evt.lngLat.lat; };

        Fx.hover(gd, evt, self.id);
    });

    map.on('click', function() {
        Fx.click(gd, { target: true });
    });

    function unhover() {
        Fx.loneUnhover(fullLayout._toppaper);
    }

    map.on('dragstart', unhover);
    map.on('zoomstart', unhover);

};

proto.updateMap = function(calcData, fullLayout, resolve, reject) {
    var self = this,
        map = self.map;

    self.rejectOnError(reject);

    var styleObj = getStyleObj(self.opts.style);

    if(self.styleObj.id !== styleObj.id) {
        self.styleObj = styleObj;
        map.setStyle(styleObj.style);

        map.style.once('load', function() {

            // need to rebuild trace layers on reload
            // to avoid 'lost event' errors
            self.traceHash = {};

            self.updateData(calcData);
            self.updateLayout(fullLayout);

            self.resolveOnRender(resolve);
        });
    }
    else {
        self.updateData(calcData);
        self.updateLayout(fullLayout);

        self.resolveOnRender(resolve);
    }
};

proto.updateData = function(calcData) {
    var traceHash = this.traceHash;

    var traceObj, trace, i, j;

    // update or create trace objects
    for(i = 0; i < calcData.length; i++) {
        var calcTrace = calcData[i];

        trace = calcTrace[0].trace;
        traceObj = traceHash[trace.uid];

        if(traceObj) traceObj.update(calcTrace);
        else if(trace._module) {
            traceHash[trace.uid] = trace._module.plot(this, calcTrace);
        }
    }

    // remove empty trace objects
    var ids = Object.keys(traceHash);
    id_loop:
    for(i = 0; i < ids.length; i++) {
        var id = ids[i];

        for(j = 0; j < calcData.length; j++) {
            trace = calcData[j][0].trace;

            if(id === trace.uid) continue id_loop;
        }

        traceObj = traceHash[id];
        traceObj.dispose();
        delete traceHash[id];
    }
};

proto.updateLayout = function(fullLayout) {
    var map = this.map,
        opts = this.opts;

    map.setCenter(convertCenter(opts.center));
    map.setZoom(opts.zoom);
    map.setBearing(opts.bearing);
    map.setPitch(opts.pitch);

    this.updateLayers();
    this.updateFramework(fullLayout);
    this.map.resize();
};

proto.resolveOnRender = function(resolve) {
    var map = this.map;

    map.on('render', function onRender() {
        if(map.loaded()) {
            map.off('render', onRender);
            resolve();
        }
    });
};

proto.rejectOnError = function(reject) {
    var map = this.map;

    function handler() {
        reject(new Error(constants.mapOnErrorMsg));
    }

    map.once('error', handler);
    map.once('style.error', handler);
    map.once('source.error', handler);
    map.once('tile.error', handler);
    map.once('layer.error', handler);
};

proto.createFramework = function(fullLayout) {
    var self = this;

    var div = self.div = document.createElement('div');

    div.id = self.uid;
    div.style.position = 'absolute';

    self.container.appendChild(div);

    // create mock x/y axes for hover routine

    self.xaxis = {
        _id: 'x',
        c2p: function(v) { return self.project(v).x; }
    };

    self.yaxis = {
        _id: 'y',
        c2p: function(v) { return self.project(v).y; }
    };

    self.updateFramework(fullLayout);
};

proto.updateFramework = function(fullLayout) {
    var domain = fullLayout[this.id].domain,
        size = fullLayout._size;

    var style = this.div.style;

    // TODO Is this correct? It seems to get the map zoom level wrong?

    style.width = size.w * (domain.x[1] - domain.x[0]) + 'px';
    style.height = size.h * (domain.y[1] - domain.y[0]) + 'px';
    style.left = size.l + domain.x[0] * size.w + 'px';
    style.top = size.t + (1 - domain.y[1]) * size.h + 'px';

    this.xaxis._offset = size.l + domain.x[0] * size.w;
    this.xaxis._length = size.w * (domain.x[1] - domain.x[0]);

    this.yaxis._offset = size.t + (1 - domain.y[1]) * size.h;
    this.yaxis._length = size.h * (domain.y[1] - domain.y[0]);
};

proto.updateLayers = function() {
    var opts = this.opts,
        layers = opts.layers,
        layerList = this.layerList,
        i;

    // if the layer arrays don't match,
    // don't try to be smart,
    // delete them all, and start all over.

    if(layers.length !== layerList.length) {
        for(i = 0; i < layerList.length; i++) {
            layerList[i].dispose();
        }

        layerList = this.layerList = [];

        for(i = 0; i < layers.length; i++) {
            layerList.push(createMapboxLayer(this, i, layers[i]));
        }
    }
    else {
        for(i = 0; i < layers.length; i++) {
            layerList[i].update(layers[i]);
        }
    }
};

proto.destroy = function() {
    if(this.map) {
        this.map.remove();
        this.map = null;
    }
    this.container.removeChild(this.div);
};

proto.toImage = function() {
    return this.map.getCanvas().toDataURL();
};

// convenience wrapper to create blank GeoJSON sources
// and avoid 'invalid GeoJSON' errors
proto.initSource = function(idSource) {
    var blank = {
        type: 'geojson',
        data: {
            type: 'Feature',
            geometry: {
                type: 'Point',
                coordinates: []
            }
        }
    };

    return this.map.addSource(idSource, blank);
};

// convenience wrapper to set data of GeoJSON sources
proto.setSourceData = function(idSource, data) {
    this.map.getSource(idSource).setData(data);
};

// convenience wrapper to create set multiple layer
// 'layout' or 'paint options at once.
proto.setOptions = function(id, methodName, opts) {
    var map = this.map,
        keys = Object.keys(opts);

    for(var i = 0; i < keys.length; i++) {
        var key = keys[i];

        map[methodName](id, key, opts[key]);
    }
};

// convenience method to project a [lon, lat] array to pixel coords
proto.project = function(v) {
    return this.map.project(new mapboxgl.LngLat(v[0], v[1]));
};

// get map's current view values in plotly.js notation
proto.getView = function() {
    var map = this.map;

    var mapCenter = map.getCenter(),
        center = { lon: mapCenter.lng, lat: mapCenter.lat };

    return {
        center: center,
        zoom: map.getZoom(),
        bearing: map.getBearing(),
        pitch: map.getPitch()
    };
};

function getStyleObj(val) {
    var styleValues = layoutAttributes.style.values,
        styleDflt = layoutAttributes.style.dflt,
        styleObj = {};

    if(Lib.isPlainObject(val)) {
        styleObj.id = val.id;
        styleObj.style = val;
    }
    else if(typeof val === 'string') {
        styleObj.id = val;
        styleObj.style = (styleValues.indexOf(val) !== -1) ?
             convertStyleVal(val) :
             val;
    }
    else {
        styleObj.id = styleDflt;
        styleObj.style = convertStyleVal(styleDflt);
    }

    return styleObj;
}

// if style is part of the 'official' mapbox values, add URL prefix and suffix
function convertStyleVal(val) {
    return constants.styleUrlPrefix + val + '-' + constants.styleUrlSuffix;
}

function convertCenter(center) {
    return [center.lon, center.lat];
}

},{"../../lib":610,"../cartesian/graph_interact":649,"./constants":694,"./layers":697,"./layout_attributes":698,"mapbox-gl":319}],701:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    t: {
        valType: 'number',
        dflt: 0,
        role: 'style',
        description: 'The amount of padding (in px) along the top of the component.'
    },
    r: {
        valType: 'number',
        dflt: 0,
        role: 'style',
        description: 'The amount of padding (in px) on the right side of the component.'
    },
    b: {
        valType: 'number',
        dflt: 0,
        role: 'style',
        description: 'The amount of padding (in px) along the bottom of the component.'
    },
    l: {
        valType: 'number',
        dflt: 0,
        role: 'style',
        description: 'The amount of padding (in px) on the left side of the component.'
    }
};

},{}],702:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');

var Plotly = require('../plotly');
var Registry = require('../registry');
var Lib = require('../lib');
var Color = require('../components/color');

var plots = module.exports = {};

var animationAttrs = require('./animation_attributes');
var frameAttrs = require('./frame_attributes');

// Expose registry methods on Plots for backward-compatibility
Lib.extendFlat(plots, Registry);

plots.attributes = require('./attributes');
plots.attributes.type.values = plots.allTypes;
plots.fontAttrs = require('./font_attributes');
plots.layoutAttributes = require('./layout_attributes');

// TODO make this a plot attribute?
plots.fontWeight = 'normal';

var subplotsRegistry = plots.subplotsRegistry;
var transformsRegistry = plots.transformsRegistry;

var ErrorBars = require('../components/errorbars');

var commandModule = require('./command');
plots.executeAPICommand = commandModule.executeAPICommand;
plots.computeAPICommandBindings = commandModule.computeAPICommandBindings;
plots.manageCommandObserver = commandModule.manageCommandObserver;
plots.hasSimpleAPICommandBindings = commandModule.hasSimpleAPICommandBindings;

/**
 * Find subplot ids in data.
 * Meant to be used in the defaults step.
 *
 * Use plots.getSubplotIds to grab the current
 * subplot ids later on in Plotly.plot.
 *
 * @param {array} data plotly data array
 *      (intended to be _fullData, but does not have to be).
 * @param {string} type subplot type to look for.
 *
 * @return {array} list of subplot ids (strings).
 *      N.B. these ids possibly un-ordered.
 *
 * TODO incorporate cartesian/gl2d axis finders in this paradigm.
 */
plots.findSubplotIds = function findSubplotIds(data, type) {
    var subplotIds = [];

    if(plots.subplotsRegistry[type] === undefined) return subplotIds;

    var attr = plots.subplotsRegistry[type].attr;

    for(var i = 0; i < data.length; i++) {
        var trace = data[i];

        if(plots.traceIs(trace, type) && subplotIds.indexOf(trace[attr]) === -1) {
            subplotIds.push(trace[attr]);
        }
    }

    return subplotIds;
};

/**
 * Get the ids of the current subplots.
 *
 * @param {object} layout plotly full layout object.
 * @param {string} type subplot type to look for.
 *
 * @return {array} list of ordered subplot ids (strings).
 *
 */
plots.getSubplotIds = function getSubplotIds(layout, type) {
    var _module = plots.subplotsRegistry[type];

    if(_module === undefined) return [];

    // layout must be 'fullLayout' here
    if(type === 'cartesian' && (!layout._has || !layout._has('cartesian'))) return [];
    if(type === 'gl2d' && (!layout._has || !layout._has('gl2d'))) return [];
    if(type === 'cartesian' || type === 'gl2d') {
        return Object.keys(layout._plots || {});
    }

    var idRegex = _module.idRegex,
        layoutKeys = Object.keys(layout),
        subplotIds = [];

    for(var i = 0; i < layoutKeys.length; i++) {
        var layoutKey = layoutKeys[i];

        if(idRegex.test(layoutKey)) subplotIds.push(layoutKey);
    }

    // order the ids
    var idLen = _module.idRoot.length;
    subplotIds.sort(function(a, b) {
        var aNum = +(a.substr(idLen) || 1),
            bNum = +(b.substr(idLen) || 1);
        return aNum - bNum;
    });

    return subplotIds;
};

/**
 * Get the data trace(s) associated with a given subplot.
 *
 * @param {array} data  plotly full data array.
 * @param {object} layout plotly full layout object.
 * @param {string} subplotId subplot ids to look for.
 *
 * @return {array} list of trace objects.
 *
 */
plots.getSubplotData = function getSubplotData(data, type, subplotId) {
    if(plots.subplotsRegistry[type] === undefined) return [];

    var attr = plots.subplotsRegistry[type].attr,
        subplotData = [],
        trace;

    for(var i = 0; i < data.length; i++) {
        trace = data[i];

        if(type === 'gl2d' && plots.traceIs(trace, 'gl2d')) {
            var spmatch = Plotly.Axes.subplotMatch,
                subplotX = 'x' + subplotId.match(spmatch)[1],
                subplotY = 'y' + subplotId.match(spmatch)[2];

            if(trace[attr[0]] === subplotX && trace[attr[1]] === subplotY) {
                subplotData.push(trace);
            }
        }
        else {
            if(trace[attr] === subplotId) subplotData.push(trace);
        }
    }

    return subplotData;
};

// in some cases the browser doesn't seem to know how big
// the text is at first, so it needs to draw it,
// then wait a little, then draw it again
plots.redrawText = function(gd) {

    // do not work if polar is present
    if((gd.data && gd.data[0] && gd.data[0].r)) return;

    return new Promise(function(resolve) {
        setTimeout(function() {
            Registry.getComponentMethod('annotations', 'draw')(gd);
            Registry.getComponentMethod('legend', 'draw')(gd);

            (gd.calcdata || []).forEach(function(d) {
                if(d[0] && d[0].t && d[0].t.cb) d[0].t.cb();
            });

            resolve(plots.previousPromises(gd));
        }, 300);
    });
};

// resize plot about the container size
plots.resize = function(gd) {
    return new Promise(function(resolve, reject) {

        if(!gd || d3.select(gd).style('display') === 'none') {
            reject(new Error('Resize must be passed a plot div element.'));
        }

        if(gd._redrawTimer) clearTimeout(gd._redrawTimer);

        gd._redrawTimer = setTimeout(function() {
            // return if there is nothing to resize
            if(gd.layout.width && gd.layout.height) {
                resolve(gd);
                return;
            }

            delete gd.layout.width;
            delete gd.layout.height;

            // autosizing doesn't count as a change that needs saving
            var oldchanged = gd.changed;

            // nor should it be included in the undo queue
            gd.autoplay = true;

            Plotly.relayout(gd, { autosize: true }).then(function() {
                gd.changed = oldchanged;
                resolve(gd);
            });
        }, 100);
    });
};


// for use in Lib.syncOrAsync, check if there are any
// pending promises in this plot and wait for them
plots.previousPromises = function(gd) {
    if((gd._promises || []).length) {
        return Promise.all(gd._promises)
            .then(function() { gd._promises = []; });
    }
};

/**
 * Adds the 'Edit chart' link.
 * Note that now Plotly.plot() calls this so it can regenerate whenever it replots
 *
 * Add source links to your graph inside the 'showSources' config argument.
 */
plots.addLinks = function(gd) {
    var fullLayout = gd._fullLayout;

    var linkContainer = fullLayout._paper
        .selectAll('text.js-plot-link-container').data([0]);

    linkContainer.enter().append('text')
        .classed('js-plot-link-container', true)
        .style({
            'font-family': '"Open Sans", Arial, sans-serif',
            'font-size': '12px',
            'fill': Color.defaultLine,
            'pointer-events': 'all'
        })
        .each(function() {
            var links = d3.select(this);
            links.append('tspan').classed('js-link-to-tool', true);
            links.append('tspan').classed('js-link-spacer', true);
            links.append('tspan').classed('js-sourcelinks', true);
        });

    // The text node inside svg
    var text = linkContainer.node(),
        attrs = {
            y: fullLayout._paper.attr('height') - 9
        };

    // If text's width is bigger than the layout
    // Check that text is a child node or document.body
    // because otherwise IE/Edge might throw an exception
    // when calling getComputedTextLength().
    // Apparently offsetParent is null for invisibles.
    if(document.body.contains(text) && text.getComputedTextLength() >= (fullLayout.width - 20)) {
        // Align the text at the left
        attrs['text-anchor'] = 'start';
        attrs.x = 5;
    }
    else {
        // Align the text at the right
        attrs['text-anchor'] = 'end';
        attrs.x = fullLayout._paper.attr('width') - 7;
    }

    linkContainer.attr(attrs);

    var toolspan = linkContainer.select('.js-link-to-tool'),
        spacespan = linkContainer.select('.js-link-spacer'),
        sourcespan = linkContainer.select('.js-sourcelinks');

    if(gd._context.showSources) gd._context.showSources(gd);

    // 'view in plotly' link for embedded plots
    if(gd._context.showLink) positionPlayWithData(gd, toolspan);

    // separator if we have both sources and tool link
    spacespan.text((toolspan.text() && sourcespan.text()) ? ' - ' : '');
};

// note that now this function is only adding the brand in
// iframes and 3rd-party apps
function positionPlayWithData(gd, container) {
    container.text('');
    var link = container.append('a')
        .attr({
            'xlink:xlink:href': '#',
            'class': 'link--impt link--embedview',
            'font-weight': 'bold'
        })
        .text(gd._context.linkText + ' ' + String.fromCharCode(187));

    if(gd._context.sendData) {
        link.on('click', function() {
            plots.sendDataToCloud(gd);
        });
    }
    else {
        var path = window.location.pathname.split('/');
        var query = window.location.search;
        link.attr({
            'xlink:xlink:show': 'new',
            'xlink:xlink:href': '/' + path[2].split('.')[0] + '/' + path[1] + query
        });
    }
}

plots.sendDataToCloud = function(gd) {
    gd.emit('plotly_beforeexport');

    var baseUrl = (window.PLOTLYENV && window.PLOTLYENV.BASE_URL) || 'https://plot.ly';

    var hiddenformDiv = d3.select(gd)
        .append('div')
        .attr('id', 'hiddenform')
        .style('display', 'none');

    var hiddenform = hiddenformDiv
        .append('form')
        .attr({
            action: baseUrl + '/external',
            method: 'post',
            target: '_blank'
        });

    var hiddenformInput = hiddenform
        .append('input')
        .attr({
            type: 'text',
            name: 'data'
        });

    hiddenformInput.node().value = plots.graphJson(gd, false, 'keepdata');
    hiddenform.node().submit();
    hiddenformDiv.remove();

    gd.emit('plotly_afterexport');
    return false;
};

// Fill in default values:
//
// gd.data, gd.layout:
//   are precisely what the user specified,
//   these fields shouldn't be modified nor used directly
//   after the supply defaults step.
//
// gd._fullData, gd._fullLayout:
//   are complete descriptions of how to draw the plot,
//   use these fields in all required computations.
//
// gd._fullLayout._modules
//   is a list of all the trace modules required to draw the plot.
//
// gd._fullLayout._basePlotModules
//   is a list of all the plot modules required to draw the plot.
//
// gd._fullLayout._transformModules
//   is a list of all the transform modules invoked.
//
plots.supplyDefaults = function(gd) {
    var oldFullLayout = gd._fullLayout || {},
        newFullLayout = gd._fullLayout = {},
        newLayout = gd.layout || {};

    var oldFullData = gd._fullData || [],
        newFullData = gd._fullData = [],
        newData = gd.data || [];

    var i;

    // Create all the storage space for frames, but only if doesn't already exist
    if(!gd._transitionData) plots.createTransitionData(gd);

    // first fill in what we can of layout without looking at data
    // because fullData needs a few things from layout

    if(oldFullLayout._initialAutoSizeIsDone) {

        // coerce the updated layout while preserving width and height
        var oldWidth = oldFullLayout.width,
            oldHeight = oldFullLayout.height;

        plots.supplyLayoutGlobalDefaults(newLayout, newFullLayout);

        if(!newLayout.width) newFullLayout.width = oldWidth;
        if(!newLayout.height) newFullLayout.height = oldHeight;
    }
    else {

        // coerce the updated layout and autosize if needed
        plots.supplyLayoutGlobalDefaults(newLayout, newFullLayout);

        var missingWidthOrHeight = (!newLayout.width || !newLayout.height),
            autosize = newFullLayout.autosize,
            autosizable = gd._context && gd._context.autosizable,
            initialAutoSize = missingWidthOrHeight && (autosize || autosizable);

        if(initialAutoSize) plots.plotAutoSize(gd, newLayout, newFullLayout);
        else if(missingWidthOrHeight) plots.sanitizeMargins(gd);

        // for backwards-compatibility with Plotly v1.x.x
        if(!autosize && missingWidthOrHeight) {
            newLayout.width = newFullLayout.width;
            newLayout.height = newFullLayout.height;
        }
    }

    newFullLayout._initialAutoSizeIsDone = true;

    // keep track of how many traces are inputted
    newFullLayout._dataLength = newData.length;

    // then do the data
    newFullLayout._globalTransforms = (gd._context || {}).globalTransforms;
    plots.supplyDataDefaults(newData, newFullData, newLayout, newFullLayout);

    // attach helper method to check whether a plot type is present on graph
    newFullLayout._has = plots._hasPlotType.bind(newFullLayout);

    // special cases that introduce interactions between traces
    var _modules = newFullLayout._modules;
    for(i = 0; i < _modules.length; i++) {
        var _module = _modules[i];
        if(_module.cleanData) _module.cleanData(newFullData);
    }

    if(oldFullData.length === newData.length) {
        for(i = 0; i < newFullData.length; i++) {
            relinkPrivateKeys(newFullData[i], oldFullData[i]);
        }
    }

    // finally, fill in the pieces of layout that may need to look at data
    plots.supplyLayoutModuleDefaults(newLayout, newFullLayout, newFullData, gd._transitionData);

    // TODO remove in v2.0.0
    // add has-plot-type refs to fullLayout for backward compatibility
    newFullLayout._hasCartesian = newFullLayout._has('cartesian');
    newFullLayout._hasGeo = newFullLayout._has('geo');
    newFullLayout._hasGL3D = newFullLayout._has('gl3d');
    newFullLayout._hasGL2D = newFullLayout._has('gl2d');
    newFullLayout._hasTernary = newFullLayout._has('ternary');
    newFullLayout._hasPie = newFullLayout._has('pie');

    // clean subplots and other artifacts from previous plot calls
    plots.cleanPlot(newFullData, newFullLayout, oldFullData, oldFullLayout);

    // relink / initialize subplot axis objects
    plots.linkSubplots(newFullData, newFullLayout, oldFullData, oldFullLayout);

    // relink functions and _ attributes to promote consistency between plots
    relinkPrivateKeys(newFullLayout, oldFullLayout);

    // TODO may return a promise
    plots.doAutoMargin(gd);

    // can't quite figure out how to get rid of this... each axis needs
    // a reference back to the DOM object for just a few purposes
    var axList = Plotly.Axes.list(gd);
    for(i = 0; i < axList.length; i++) {
        var ax = axList[i];
        ax._gd = gd;
        ax.setScale();
    }

    // update object references in calcdata
    if((gd.calcdata || []).length === newFullData.length) {
        for(i = 0; i < newFullData.length; i++) {
            var trace = newFullData[i];
            (gd.calcdata[i][0] || {}).trace = trace;
        }
    }
};

// Create storage for all of the data related to frames and transitions:
plots.createTransitionData = function(gd) {
    // Set up the default keyframe if it doesn't exist:
    if(!gd._transitionData) {
        gd._transitionData = {};
    }

    if(!gd._transitionData._frames) {
        gd._transitionData._frames = [];
    }

    if(!gd._transitionData._frameHash) {
        gd._transitionData._frameHash = {};
    }

    if(!gd._transitionData._counter) {
        gd._transitionData._counter = 0;
    }

    if(!gd._transitionData._interruptCallbacks) {
        gd._transitionData._interruptCallbacks = [];
    }
};

// helper function to be bound to fullLayout to check
// whether a certain plot type is present on plot
plots._hasPlotType = function(category) {
    var basePlotModules = this._basePlotModules || [];

    for(var i = 0; i < basePlotModules.length; i++) {
        var _module = basePlotModules[i];

        if(_module.name === category) return true;
    }

    return false;
};

plots.cleanPlot = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var i, j;

    var basePlotModules = oldFullLayout._basePlotModules || [];
    for(i = 0; i < basePlotModules.length; i++) {
        var _module = basePlotModules[i];

        if(_module.clean) {
            _module.clean(newFullData, newFullLayout, oldFullData, oldFullLayout);
        }
    }

    var hasPaper = !!oldFullLayout._paper;
    var hasInfoLayer = !!oldFullLayout._infolayer;

    oldLoop:
    for(i = 0; i < oldFullData.length; i++) {
        var oldTrace = oldFullData[i],
            oldUid = oldTrace.uid;

        for(j = 0; j < newFullData.length; j++) {
            var newTrace = newFullData[j];

            if(oldUid === newTrace.uid) continue oldLoop;
        }

        // clean old heatmap, contour, and scatter traces
        //
        // Note: This is also how scatter traces (cartesian and scatterternary) get
        // removed since otherwise the scatter module is not called (and so the join
        // doesn't register the removal) if scatter traces disappear entirely.
        if(hasPaper) {
            oldFullLayout._paper.selectAll(
                '.hm' + oldUid +
                ',.contour' + oldUid +
                ',#clip' + oldUid +
                ',.trace' + oldUid
            ).remove();
        }

        // clean old colorbars
        if(hasInfoLayer) {
            oldFullLayout._infolayer.selectAll('.cb' + oldUid).remove();
        }
    }
};

/**
 * Relink private _keys and keys with a function value from one container
 * to the new container.
 * Relink means copying if object is pass-by-value and adding a reference
 * if object is pass-by-ref.
 * This prevents deepCopying massive structures like a webgl context.
 */
function relinkPrivateKeys(toContainer, fromContainer) {
    var isPlainObject = Lib.isPlainObject,
        isArray = Array.isArray;

    var keys = Object.keys(fromContainer || {});

    for(var i = 0; i < keys.length; i++) {
        var k = keys[i],
            fromVal = fromContainer[k],
            toVal = toContainer[k];

        if(k.charAt(0) === '_' || typeof fromVal === 'function') {

            // if it already exists at this point, it's something
            // that we recreate each time around, so ignore it
            if(k in toContainer) continue;

            toContainer[k] = fromVal;
        }
        else if(isArray(fromVal) && isArray(toVal) && isPlainObject(fromVal[0])) {

            // recurse into arrays containers
            for(var j = 0; j < fromVal.length; j++) {
                if(isPlainObject(fromVal[j]) && isPlainObject(toVal[j])) {
                    relinkPrivateKeys(toVal[j], fromVal[j]);
                }
            }
        }
        else if(isPlainObject(fromVal) && isPlainObject(toVal)) {

            // recurse into objects, but only if they still exist
            relinkPrivateKeys(toVal, fromVal);

            if(!Object.keys(toVal).length) delete toContainer[k];
        }
    }
}

plots.linkSubplots = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldSubplots = oldFullLayout._plots || {},
        newSubplots = newFullLayout._plots = {};

    var mockGd = {
        _fullData: newFullData,
        _fullLayout: newFullLayout
    };

    var ids = Plotly.Axes.getSubplots(mockGd);

    for(var i = 0; i < ids.length; i++) {
        var id = ids[i],
            oldSubplot = oldSubplots[id],
            plotinfo;

        if(oldSubplot) {
            plotinfo = newSubplots[id] = oldSubplot;
        }
        else {
            plotinfo = newSubplots[id] = {};
            plotinfo.id = id;
        }

        plotinfo.xaxis = Plotly.Axes.getFromId(mockGd, id, 'x');
        plotinfo.yaxis = Plotly.Axes.getFromId(mockGd, id, 'y');
    }
};

plots.supplyDataDefaults = function(dataIn, dataOut, layout, fullLayout) {
    var modules = fullLayout._modules = [],
        basePlotModules = fullLayout._basePlotModules = [],
        cnt = 0;

    fullLayout._transformModules = [];

    function pushModule(fullTrace) {
        dataOut.push(fullTrace);

        var _module = fullTrace._module;
        if(!_module) return;

        Lib.pushUnique(modules, _module);
        Lib.pushUnique(basePlotModules, fullTrace._module.basePlotModule);

        cnt++;
    }

    for(var i = 0; i < dataIn.length; i++) {
        var trace = dataIn[i],
            fullTrace = plots.supplyTraceDefaults(trace, cnt, fullLayout, i);

        fullTrace.index = i;
        fullTrace._input = trace;
        fullTrace._expandedIndex = cnt;

        if(fullTrace.transforms && fullTrace.transforms.length) {
            var expandedTraces = applyTransforms(fullTrace, dataOut, layout, fullLayout);

            for(var j = 0; j < expandedTraces.length; j++) {
                var expandedTrace = expandedTraces[j],
                    fullExpandedTrace = plots.supplyTraceDefaults(expandedTrace, cnt, fullLayout, i);

                // mutate uid here using parent uid and expanded index
                // to promote consistency between update calls
                expandedTrace.uid = fullExpandedTrace.uid = fullTrace.uid + j;

                // add info about parent data trace
                fullExpandedTrace.index = i;
                fullExpandedTrace._input = trace;
                fullExpandedTrace._fullInput = fullTrace;

                // add info about the expanded data
                fullExpandedTrace._expandedIndex = cnt;
                fullExpandedTrace._expandedInput = expandedTrace;

                pushModule(fullExpandedTrace);
            }
        }
        else {

            // add identify refs for consistency with transformed traces
            fullTrace._fullInput = fullTrace;
            fullTrace._expandedInput = fullTrace;

            pushModule(fullTrace);
        }
    }
};

plots.supplyAnimationDefaults = function(opts) {
    opts = opts || {};
    var i;
    var optsOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts || {}, optsOut, animationAttrs, attr, dflt);
    }

    coerce('mode');
    coerce('direction');
    coerce('fromcurrent');

    if(Array.isArray(opts.frame)) {
        optsOut.frame = [];
        for(i = 0; i < opts.frame.length; i++) {
            optsOut.frame[i] = plots.supplyAnimationFrameDefaults(opts.frame[i] || {});
        }
    } else {
        optsOut.frame = plots.supplyAnimationFrameDefaults(opts.frame || {});
    }

    if(Array.isArray(opts.transition)) {
        optsOut.transition = [];
        for(i = 0; i < opts.transition.length; i++) {
            optsOut.transition[i] = plots.supplyAnimationTransitionDefaults(opts.transition[i] || {});
        }
    } else {
        optsOut.transition = plots.supplyAnimationTransitionDefaults(opts.transition || {});
    }

    return optsOut;
};

plots.supplyAnimationFrameDefaults = function(opts) {
    var optsOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts || {}, optsOut, animationAttrs.frame, attr, dflt);
    }

    coerce('duration');
    coerce('redraw');

    return optsOut;
};

plots.supplyAnimationTransitionDefaults = function(opts) {
    var optsOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(opts || {}, optsOut, animationAttrs.transition, attr, dflt);
    }

    coerce('duration');
    coerce('easing');

    return optsOut;
};

plots.supplyFrameDefaults = function(frameIn) {
    var frameOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(frameIn, frameOut, frameAttrs, attr, dflt);
    }

    coerce('group');
    coerce('name');
    coerce('traces');
    coerce('baseframe');
    coerce('data');
    coerce('layout');

    return frameOut;
};

plots.supplyTraceDefaults = function(traceIn, traceOutIndex, layout, traceInIndex) {
    var traceOut = {},
        defaultColor = Color.defaults[traceOutIndex % Color.defaults.length];

    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, plots.attributes, attr, dflt);
    }

    function coerceSubplotAttr(subplotType, subplotAttr) {
        if(!plots.traceIs(traceOut, subplotType)) return;

        return Lib.coerce(traceIn, traceOut,
            plots.subplotsRegistry[subplotType].attributes, subplotAttr);
    }

    var visible = coerce('visible');

    coerce('type');
    coerce('uid');
    coerce('name', 'trace ' + traceInIndex);

    // coerce subplot attributes of all registered subplot types
    var subplotTypes = Object.keys(subplotsRegistry);
    for(var i = 0; i < subplotTypes.length; i++) {
        var subplotType = subplotTypes[i];

        // done below (only when visible is true)
        // TODO unified this pattern
        if(['cartesian', 'gl2d'].indexOf(subplotType) !== -1) continue;

        var attr = subplotsRegistry[subplotType].attr;

        if(attr) coerceSubplotAttr(subplotType, attr);
    }

    if(visible) {
        var _module = plots.getModule(traceOut);
        traceOut._module = _module;

        // gets overwritten in pie, geo and ternary modules
        coerce('hoverinfo', (layout._dataLength === 1) ? 'x+y+z+text' : undefined);

        // TODO add per-base-plot-module trace defaults step

        if(_module) _module.supplyDefaults(traceIn, traceOut, defaultColor, layout);

        if(!plots.traceIs(traceOut, 'noOpacity')) coerce('opacity');

        coerceSubplotAttr('cartesian', 'xaxis');
        coerceSubplotAttr('cartesian', 'yaxis');

        coerceSubplotAttr('gl2d', 'xaxis');
        coerceSubplotAttr('gl2d', 'yaxis');

        if(plots.traceIs(traceOut, 'showLegend')) {
            coerce('showlegend');
            coerce('legendgroup');
        }

        supplyTransformDefaults(traceIn, traceOut, layout);
    }

    return traceOut;
};

function supplyTransformDefaults(traceIn, traceOut, layout) {
    var globalTransforms = layout._globalTransforms || [];

    if(!Array.isArray(traceIn.transforms) && globalTransforms.length === 0) return;

    var containerIn = traceIn.transforms || [],
        transformList = globalTransforms.concat(containerIn),
        containerOut = traceOut.transforms = [];

    for(var i = 0; i < transformList.length; i++) {
        var transformIn = transformList[i],
            type = transformIn.type,
            _module = transformsRegistry[type],
            transformOut;

        if(!_module) Lib.warn('Unrecognized transform type ' + type + '.');

        if(_module && _module.supplyDefaults) {
            transformOut = _module.supplyDefaults(transformIn, traceOut, layout, traceIn);
            transformOut.type = type;
            transformOut._module = _module;

            Lib.pushUnique(layout._transformModules, _module);
        }
        else {
            transformOut = Lib.extendFlat({}, transformIn);
        }

        containerOut.push(transformOut);
    }
}

function applyTransforms(fullTrace, fullData, layout, fullLayout) {
    var container = fullTrace.transforms,
        dataOut = [fullTrace];

    for(var i = 0; i < container.length; i++) {
        var transform = container[i],
            _module = transformsRegistry[transform.type];

        if(_module && _module.transform) {
            dataOut = _module.transform(dataOut, {
                transform: transform,
                fullTrace: fullTrace,
                fullData: fullData,
                layout: layout,
                fullLayout: fullLayout,
                transformIndex: i
            });
        }
    }

    return dataOut;
}

plots.supplyLayoutGlobalDefaults = function(layoutIn, layoutOut) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, plots.layoutAttributes, attr, dflt);
    }

    var globalFont = Lib.coerceFont(coerce, 'font');

    coerce('title');

    Lib.coerceFont(coerce, 'titlefont', {
        family: globalFont.family,
        size: Math.round(globalFont.size * 1.4),
        color: globalFont.color
    });

    // Make sure that autosize is defaulted to *true*
    // on layouts with no set width and height for backward compatibly,
    // in particular https://plot.ly/javascript/responsive-fluid-layout/
    //
    // Before https://github.com/plotly/plotly.js/pull/635 ,
    // layouts with no set width and height were set temporary set to 'initial'
    // to pass through the autosize routine
    //
    // This behavior is subject to change in v2.
    coerce('autosize', !(layoutIn.width && layoutIn.height));

    coerce('width');
    coerce('height');
    coerce('margin.l');
    coerce('margin.r');
    coerce('margin.t');
    coerce('margin.b');
    coerce('margin.pad');
    coerce('margin.autoexpand');

    if(layoutIn.width && layoutIn.height) plots.sanitizeMargins(layoutOut);

    coerce('paper_bgcolor');

    coerce('separators');
    coerce('hidesources');
    coerce('smith');

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleDefaults');
    handleCalendarDefaults(layoutIn, layoutOut, 'calendar');
};

plots.plotAutoSize = function plotAutoSize(gd, layout, fullLayout) {
    var context = gd._context || {},
        frameMargins = context.frameMargins,
        newWidth,
        newHeight;

    var isPlotDiv = Lib.isPlotDiv(gd);

    if(isPlotDiv) gd.emit('plotly_autosize');

    // embedded in an iframe - just take the full iframe size
    // if we get to this point, with no aspect ratio restrictions
    if(context.fillFrame) {
        newWidth = window.innerWidth;
        newHeight = window.innerHeight;

        // somehow we get a few extra px height sometimes...
        // just hide it
        document.body.style.overflow = 'hidden';
    }
    else if(isNumeric(frameMargins) && frameMargins > 0) {
        var reservedMargins = calculateReservedMargins(gd._boundingBoxMargins),
            reservedWidth = reservedMargins.left + reservedMargins.right,
            reservedHeight = reservedMargins.bottom + reservedMargins.top,
            factor = 1 - 2 * frameMargins;

        var gdBB = fullLayout._container && fullLayout._container.node ?
            fullLayout._container.node().getBoundingClientRect() : {
                width: fullLayout.width,
                height: fullLayout.height
            };

        newWidth = Math.round(factor * (gdBB.width - reservedWidth));
        newHeight = Math.round(factor * (gdBB.height - reservedHeight));
    }
    else {
        // plotly.js - let the developers do what they want, either
        // provide height and width for the container div,
        // specify size in layout, or take the defaults,
        // but don't enforce any ratio restrictions
        var computedStyle = isPlotDiv ? window.getComputedStyle(gd) : {};

        newWidth = parseFloat(computedStyle.width) || fullLayout.width;
        newHeight = parseFloat(computedStyle.height) || fullLayout.height;
    }

    var minWidth = plots.layoutAttributes.width.min,
        minHeight = plots.layoutAttributes.height.min;
    if(newWidth < minWidth) newWidth = minWidth;
    if(newHeight < minHeight) newHeight = minHeight;

    var widthHasChanged = !layout.width &&
            (Math.abs(fullLayout.width - newWidth) > 1),
        heightHasChanged = !layout.height &&
            (Math.abs(fullLayout.height - newHeight) > 1);

    if(heightHasChanged || widthHasChanged) {
        if(widthHasChanged) fullLayout.width = newWidth;
        if(heightHasChanged) fullLayout.height = newHeight;
    }

    // cache initial autosize value, used in relayout when
    // width or height values are set to null
    if(!gd._initialAutoSize) {
        gd._initialAutoSize = { width: newWidth, height: newHeight };
    }

    plots.sanitizeMargins(fullLayout);
};

/**
 * Reduce all reserved margin objects to a single required margin reservation.
 *
 * @param {Object} margins
 * @returns {{left: number, right: number, bottom: number, top: number}}
 */
function calculateReservedMargins(margins) {
    var resultingMargin = {left: 0, right: 0, bottom: 0, top: 0},
        marginName;

    if(margins) {
        for(marginName in margins) {
            if(margins.hasOwnProperty(marginName)) {
                resultingMargin.left += margins[marginName].left || 0;
                resultingMargin.right += margins[marginName].right || 0;
                resultingMargin.bottom += margins[marginName].bottom || 0;
                resultingMargin.top += margins[marginName].top || 0;
            }
        }
    }
    return resultingMargin;
}

plots.supplyLayoutModuleDefaults = function(layoutIn, layoutOut, fullData, transitionData) {
    var i, _module;

    // can't be be part of basePlotModules loop
    // in order to handle the orphan axes case
    Plotly.Axes.supplyLayoutDefaults(layoutIn, layoutOut, fullData);

    // base plot module layout defaults
    var basePlotModules = layoutOut._basePlotModules;
    for(i = 0; i < basePlotModules.length; i++) {
        _module = basePlotModules[i];

        // done above already
        if(_module.name === 'cartesian') continue;

        // e.g. gl2d does not have a layout-defaults step
        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData);
        }
    }

    // trace module layout defaults
    var modules = layoutOut._modules;
    for(i = 0; i < modules.length; i++) {
        _module = modules[i];

        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData);
        }
    }

    // transform module layout defaults
    var transformModules = layoutOut._transformModules;
    for(i = 0; i < transformModules.length; i++) {
        _module = transformModules[i];

        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData, transitionData);
        }
    }

    // should FX be a component?
    Plotly.Fx.supplyLayoutDefaults(layoutIn, layoutOut, fullData);

    var components = Object.keys(Registry.componentsRegistry);
    for(i = 0; i < components.length; i++) {
        _module = Registry.componentsRegistry[components[i]];

        if(_module.supplyLayoutDefaults) {
            _module.supplyLayoutDefaults(layoutIn, layoutOut, fullData);
        }
    }
};

// Remove all plotly attributes from a div so it can be replotted fresh
// TODO: these really need to be encapsulated into a much smaller set...
plots.purge = function(gd) {

    // note: we DO NOT remove _context because it doesn't change when we insert
    // a new plot, and may have been set outside of our scope.

    var fullLayout = gd._fullLayout || {};
    if(fullLayout._glcontainer !== undefined) fullLayout._glcontainer.remove();
    if(fullLayout._geocontainer !== undefined) fullLayout._geocontainer.remove();

    // remove modebar
    if(fullLayout._modeBar) fullLayout._modeBar.destroy();

    if(gd._transitionData) {
        // Ensure any dangling callbacks are simply dropped if the plot is purged.
        // This is more or less only actually important for testing.
        if(gd._transitionData._interruptCallbacks) {
            gd._transitionData._interruptCallbacks.length = 0;
        }

        if(gd._transitionData._animationRaf) {
            window.cancelAnimationFrame(gd._transitionData._animationRaf);
        }
    }

    // data and layout
    delete gd.data;
    delete gd.layout;
    delete gd._fullData;
    delete gd._fullLayout;
    delete gd.calcdata;
    delete gd.framework;
    delete gd.empty;

    delete gd.fid;

    delete gd.undoqueue; // action queue
    delete gd.undonum;
    delete gd.autoplay; // are we doing an action that doesn't go in undo queue?
    delete gd.changed;

    // these get recreated on Plotly.plot anyway, but just to be safe
    // (and to have a record of them...)
    delete gd._tester;
    delete gd._testref;
    delete gd._promises;
    delete gd._redrawTimer;
    delete gd._replotting;
    delete gd.firstscatter;
    delete gd.hmlumcount;
    delete gd.hmpixcount;
    delete gd.numboxes;
    delete gd._hoverTimer;
    delete gd._lastHoverTime;
    delete gd._transitionData;
    delete gd._transitioning;
    delete gd._initialAutoSize;

    // remove all event listeners
    if(gd.removeAllListeners) gd.removeAllListeners();
};

plots.style = function(gd) {
    var _modules = gd._fullLayout._modules;

    for(var i = 0; i < _modules.length; i++) {
        var _module = _modules[i];

        if(_module.style) _module.style(gd);
    }
};

plots.sanitizeMargins = function(fullLayout) {
    // polar doesn't do margins...
    if(!fullLayout || !fullLayout.margin) return;

    var width = fullLayout.width,
        height = fullLayout.height,
        margin = fullLayout.margin,
        plotWidth = width - (margin.l + margin.r),
        plotHeight = height - (margin.t + margin.b),
        correction;

    // if margin.l + margin.r = 0 then plotWidth > 0
    // as width >= 10 by supplyDefaults
    // similarly for margin.t + margin.b

    if(plotWidth < 0) {
        correction = (width - 1) / (margin.l + margin.r);
        margin.l = Math.floor(correction * margin.l);
        margin.r = Math.floor(correction * margin.r);
    }

    if(plotHeight < 0) {
        correction = (height - 1) / (margin.t + margin.b);
        margin.t = Math.floor(correction * margin.t);
        margin.b = Math.floor(correction * margin.b);
    }
};

// called by legend and colorbar routines to see if we need to
// expand the margins to show them
// o is {x,l,r,y,t,b} where x and y are plot fractions,
// the rest are pixels in each direction
// or leave o out to delete this entry (like if it's hidden)
plots.autoMargin = function(gd, id, o) {
    var fullLayout = gd._fullLayout;

    if(!fullLayout._pushmargin) fullLayout._pushmargin = {};

    if(fullLayout.margin.autoexpand !== false) {
        if(!o) delete fullLayout._pushmargin[id];
        else {
            var pad = o.pad === undefined ? 12 : o.pad;

            // if the item is too big, just give it enough automargin to
            // make sure you can still grab it and bring it back
            if(o.l + o.r > fullLayout.width * 0.5) o.l = o.r = 0;
            if(o.b + o.t > fullLayout.height * 0.5) o.b = o.t = 0;

            fullLayout._pushmargin[id] = {
                l: {val: o.x, size: o.l + pad},
                r: {val: o.x, size: o.r + pad},
                b: {val: o.y, size: o.b + pad},
                t: {val: o.y, size: o.t + pad}
            };
        }

        if(!gd._replotting) plots.doAutoMargin(gd);
    }
};

plots.doAutoMargin = function(gd) {
    var fullLayout = gd._fullLayout;
    if(!fullLayout._size) fullLayout._size = {};
    if(!fullLayout._pushmargin) fullLayout._pushmargin = {};

    var gs = fullLayout._size,
        oldmargins = JSON.stringify(gs);

    // adjust margins for outside legends and colorbars
    // fullLayout.margin is the requested margin,
    // fullLayout._size has margins and plotsize after adjustment
    var ml = Math.max(fullLayout.margin.l || 0, 0),
        mr = Math.max(fullLayout.margin.r || 0, 0),
        mt = Math.max(fullLayout.margin.t || 0, 0),
        mb = Math.max(fullLayout.margin.b || 0, 0),
        pm = fullLayout._pushmargin;

    if(fullLayout.margin.autoexpand !== false) {
        // fill in the requested margins
        pm.base = {
            l: {val: 0, size: ml},
            r: {val: 1, size: mr},
            t: {val: 1, size: mt},
            b: {val: 0, size: mb}
        };
        // now cycle through all the combinations of l and r
        // (and t and b) to find the required margins
        Object.keys(pm).forEach(function(k1) {
            var pushleft = pm[k1].l || {},
                pushbottom = pm[k1].b || {},
                fl = pushleft.val,
                pl = pushleft.size,
                fb = pushbottom.val,
                pb = pushbottom.size;
            Object.keys(pm).forEach(function(k2) {
                if(isNumeric(pl) && pm[k2].r) {
                    var fr = pm[k2].r.val,
                        pr = pm[k2].r.size;
                    if(fr > fl) {
                        var newl = (pl * fr +
                                (pr - fullLayout.width) * fl) / (fr - fl),
                            newr = (pr * (1 - fl) +
                                (pl - fullLayout.width) * (1 - fr)) / (fr - fl);
                        if(newl >= 0 && newr >= 0 && newl + newr > ml + mr) {
                            ml = newl;
                            mr = newr;
                        }
                    }
                }
                if(isNumeric(pb) && pm[k2].t) {
                    var ft = pm[k2].t.val,
                        pt = pm[k2].t.size;
                    if(ft > fb) {
                        var newb = (pb * ft +
                                (pt - fullLayout.height) * fb) / (ft - fb),
                            newt = (pt * (1 - fb) +
                                (pb - fullLayout.height) * (1 - ft)) / (ft - fb);
                        if(newb >= 0 && newt >= 0 && newb + newt > mb + mt) {
                            mb = newb;
                            mt = newt;
                        }
                    }
                }
            });
        });
    }

    gs.l = Math.round(ml);
    gs.r = Math.round(mr);
    gs.t = Math.round(mt);
    gs.b = Math.round(mb);
    gs.p = Math.round(fullLayout.margin.pad);
    gs.w = Math.round(fullLayout.width) - gs.l - gs.r;
    gs.h = Math.round(fullLayout.height) - gs.t - gs.b;

    // if things changed and we're not already redrawing, trigger a redraw
    if(!gd._replotting && oldmargins !== '{}' &&
            oldmargins !== JSON.stringify(fullLayout._size)) {
        return Plotly.plot(gd);
    }
};

/**
 * JSONify the graph data and layout
 *
 * This function needs to recurse because some src can be inside
 * sub-objects.
 *
 * It also strips out functions and private (starts with _) elements.
 * Therefore, we can add temporary things to data and layout that don't
 * get saved.
 *
 * @param gd The graphDiv
 * @param {Boolean} dataonly If true, don't return layout.
 * @param {'keepref'|'keepdata'|'keepall'} [mode='keepref'] Filter what's kept
 *      keepref: remove data for which there's a src present
 *          eg if there's xsrc present (and xsrc is well-formed,
 *          ie has : and some chars before it), strip out x
 *      keepdata: remove all src tags, don't remove the data itself
 *      keepall: keep data and src
 * @param {String} output If you specify 'object', the result will not be stringified
 * @param {Boolean} useDefaults If truthy, use _fullLayout and _fullData
 * @returns {Object|String}
 */
plots.graphJson = function(gd, dataonly, mode, output, useDefaults) {
    // if the defaults aren't supplied yet, we need to do that...
    if((useDefaults && dataonly && !gd._fullData) ||
            (useDefaults && !dataonly && !gd._fullLayout)) {
        plots.supplyDefaults(gd);
    }

    var data = (useDefaults) ? gd._fullData : gd.data,
        layout = (useDefaults) ? gd._fullLayout : gd.layout,
        frames = (gd._transitionData || {})._frames;

    function stripObj(d) {
        if(typeof d === 'function') {
            return null;
        }
        if(Lib.isPlainObject(d)) {
            var o = {}, v, src;
            for(v in d) {
                // remove private elements and functions
                // _ is for private, [ is a mistake ie [object Object]
                if(typeof d[v] === 'function' ||
                        ['_', '['].indexOf(v.charAt(0)) !== -1) {
                    continue;
                }

                // look for src/data matches and remove the appropriate one
                if(mode === 'keepdata') {
                    // keepdata: remove all ...src tags
                    if(v.substr(v.length - 3) === 'src') {
                        continue;
                    }
                }
                else if(mode === 'keepstream') {
                    // keep sourced data if it's being streamed.
                    // similar to keepref, but if the 'stream' object exists
                    // in a trace, we will keep the data array.
                    src = d[v + 'src'];
                    if(typeof src === 'string' && src.indexOf(':') > 0) {
                        if(!Lib.isPlainObject(d.stream)) {
                            continue;
                        }
                    }
                }
                else if(mode !== 'keepall') {
                    // keepref: remove sourced data but only
                    // if the source tag is well-formed
                    src = d[v + 'src'];
                    if(typeof src === 'string' && src.indexOf(':') > 0) {
                        continue;
                    }
                }

                // OK, we're including this... recurse into it
                o[v] = stripObj(d[v]);
            }
            return o;
        }

        if(Array.isArray(d)) {
            return d.map(stripObj);
        }

        // convert native dates to date strings...
        // mostly for external users exporting to plotly
        if(Lib.isJSDate(d)) return Lib.ms2DateTimeLocal(+d);

        return d;
    }

    var obj = {
        data: (data || []).map(function(v) {
            var d = stripObj(v);
            // fit has some little arrays in it that don't contain data,
            // just fit params and meta
            if(dataonly) { delete d.fit; }
            return d;
        })
    };
    if(!dataonly) { obj.layout = stripObj(layout); }

    if(gd.framework && gd.framework.isPolar) obj = gd.framework.getConfig();

    if(frames) obj.frames = stripObj(frames);

    return (output === 'object') ? obj : JSON.stringify(obj);
};

/**
 * Modify a keyframe using a list of operations:
 *
 * @param {array of objects} operations
 *      Sequence of operations to be performed on the keyframes
 */
plots.modifyFrames = function(gd, operations) {
    var i, op, frame;
    var _frames = gd._transitionData._frames;
    var _hash = gd._transitionData._frameHash;

    for(i = 0; i < operations.length; i++) {
        op = operations[i];

        switch(op.type) {
            // No reason this couldn't exist, but is currently unused/untested:
            /* case 'rename':
                frame = _frames[op.index];
                delete _hash[frame.name];
                _hash[op.name] = frame;
                frame.name = op.name;
                break;*/
            case 'replace':
                frame = op.value;
                var oldName = (_frames[op.index] || {}).name;
                var newName = frame.name;
                _frames[op.index] = _hash[newName] = frame;

                if(newName !== oldName) {
                    // If name has changed in addition to replacement, then update
                    // the lookup table:
                    delete _hash[oldName];
                    _hash[newName] = frame;
                }

                break;
            case 'insert':
                frame = op.value;
                _hash[frame.name] = frame;
                _frames.splice(op.index, 0, frame);
                break;
            case 'delete':
                frame = _frames[op.index];
                delete _hash[frame.name];
                _frames.splice(op.index, 1);
                break;
        }
    }

    return Promise.resolve();
};

/*
 * Compute a keyframe. Merge a keyframe into its base frame(s) and
 * expand properties.
 *
 * @param {object} frameLookup
 *      An object containing frames keyed by name (i.e. gd._transitionData._frameHash)
 * @param {string} frame
 *      The name of the keyframe to be computed
 *
 * Returns: a new object with the merged content
 */
plots.computeFrame = function(gd, frameName) {
    var frameLookup = gd._transitionData._frameHash;
    var i, traceIndices, traceIndex, destIndex;

    // Null or undefined will fail on .toString(). We'll allow numbers since we
    // make it clear frames must be given string names, but we'll allow numbers
    // here since they're otherwise fine for looking up frames as long as they're
    // properly cast to strings. We really just want to ensure here that this
    // 1) doesn't fail, and
    // 2) doens't give an incorrect answer (which String(frameName) would)
    if(!frameName) {
        throw new Error('computeFrame must be given a string frame name');
    }

    var framePtr = frameLookup[frameName.toString()];

    // Return false if the name is invalid:
    if(!framePtr) {
        return false;
    }

    var frameStack = [framePtr];
    var frameNameStack = [framePtr.name];

    // Follow frame pointers:
    while(framePtr.baseframe && (framePtr = frameLookup[framePtr.baseframe.toString()])) {
        // Avoid infinite loops:
        if(frameNameStack.indexOf(framePtr.name) !== -1) break;

        frameStack.push(framePtr);
        frameNameStack.push(framePtr.name);
    }

    // A new object for the merged result:
    var result = {};

    // Merge, starting with the last and ending with the desired frame:
    while((framePtr = frameStack.pop())) {
        if(framePtr.layout) {
            result.layout = plots.extendLayout(result.layout, framePtr.layout);
        }

        if(framePtr.data) {
            if(!result.data) {
                result.data = [];
            }
            traceIndices = framePtr.traces;

            if(!traceIndices) {
                // If not defined, assume serial order starting at zero
                traceIndices = [];
                for(i = 0; i < framePtr.data.length; i++) {
                    traceIndices[i] = i;
                }
            }

            if(!result.traces) {
                result.traces = [];
            }

            for(i = 0; i < framePtr.data.length; i++) {
                // Loop through this frames data, find out where it should go,
                // and merge it!
                traceIndex = traceIndices[i];
                if(traceIndex === undefined || traceIndex === null) {
                    continue;
                }

                destIndex = result.traces.indexOf(traceIndex);
                if(destIndex === -1) {
                    destIndex = result.data.length;
                    result.traces[destIndex] = traceIndex;
                }

                result.data[destIndex] = plots.extendTrace(result.data[destIndex], framePtr.data[i]);
            }
        }
    }

    return result;
};

/*
 * Recompute the lookup table that maps frame name -> frame object. addFrames/
 * deleteFrames already manages this data one at a time, so the only time this
 * is necessary is if you poke around manually in `gd._transitionData._frames`
 * and create and haven't updated the lookup table.
 */
plots.recomputeFrameHash = function(gd) {
    var hash = gd._transitionData._frameHash = {};
    var frames = gd._transitionData._frames;
    for(var i = 0; i < frames.length; i++) {
        var frame = frames[i];
        if(frame && frame.name) {
            hash[frame.name] = frame;
        }
    }
};

/**
 * Extend an object, treating container arrays very differently by extracting
 * their contents and merging them separately.
 *
 * This exists so that we can extendDeepNoArrays and avoid stepping into data
 * arrays without knowledge of the plot schema, but so that we may also manually
 * recurse into known container arrays, such as transforms.
 *
 * See extendTrace and extendLayout below for usage.
 */
plots.extendObjectWithContainers = function(dest, src, containerPaths) {
    var containerProp, containerVal, i, j, srcProp, destProp, srcContainer, destContainer;
    var copy = Lib.extendDeepNoArrays({}, src || {});
    var expandedObj = Lib.expandObjectPaths(copy);
    var containerObj = {};

    // Step through and extract any container properties. Otherwise extendDeepNoArrays
    // will clobber any existing properties with an empty array and then supplyDefaults
    // will reset everything to defaults.
    if(containerPaths && containerPaths.length) {
        for(i = 0; i < containerPaths.length; i++) {
            containerProp = Lib.nestedProperty(expandedObj, containerPaths[i]);
            containerVal = containerProp.get();

            if(containerVal === undefined) {
                Lib.nestedProperty(containerObj, containerPaths[i]).set(null);
            }
            else {
                containerProp.set(null);
                Lib.nestedProperty(containerObj, containerPaths[i]).set(containerVal);
            }
        }
    }

    dest = Lib.extendDeepNoArrays(dest || {}, expandedObj);

    if(containerPaths && containerPaths.length) {
        for(i = 0; i < containerPaths.length; i++) {
            srcProp = Lib.nestedProperty(containerObj, containerPaths[i]);
            srcContainer = srcProp.get();

            if(!srcContainer) continue;

            destProp = Lib.nestedProperty(dest, containerPaths[i]);
            destContainer = destProp.get();

            if(!Array.isArray(destContainer)) {
                destContainer = [];
                destProp.set(destContainer);
            }

            for(j = 0; j < srcContainer.length; j++) {
                var srcObj = srcContainer[j];

                if(srcObj === null) destContainer[j] = null;
                else {
                    destContainer[j] = plots.extendObjectWithContainers(destContainer[j], srcObj);
                }
            }

            destProp.set(destContainer);
        }
    }

    return dest;
};

plots.dataArrayContainers = ['transforms'];
plots.layoutArrayContainers = Registry.layoutArrayContainers;

/*
 * Extend a trace definition. This method:
 *
 *  1. directly transfers any array references
 *  2. manually recurses into container arrays like transforms
 *
 * The result is the original object reference with the new contents merged in.
 */
plots.extendTrace = function(destTrace, srcTrace) {
    return plots.extendObjectWithContainers(destTrace, srcTrace, plots.dataArrayContainers);
};

/*
 * Extend a layout definition. This method:
 *
 *  1. directly transfers any array references (not critically important for
 *     layout since there aren't really data arrays)
 *  2. manually recurses into container arrays like annotations
 *
 * The result is the original object reference with the new contents merged in.
 */
plots.extendLayout = function(destLayout, srcLayout) {
    return plots.extendObjectWithContainers(destLayout, srcLayout, plots.layoutArrayContainers);
};

/**
 * Transition to a set of new data and layout properties
 *
 * @param {DOM element} gd
 *      the DOM element of the graph container div
 * @param {Object[]} data
 *      an array of data objects following the normal Plotly data definition format
 * @param {Object} layout
 *      a layout object, following normal Plotly layout format
 * @param {Number[]} traces
 *      indices of the corresponding traces specified in `data`
 * @param {Object} frameOpts
 *      options for the frame (i.e. whether to redraw post-transition)
 * @param {Object} transitionOpts
 *      options for the transition
 */
plots.transition = function(gd, data, layout, traces, frameOpts, transitionOpts) {
    var i, traceIdx;

    var dataLength = Array.isArray(data) ? data.length : 0;
    var traceIndices = traces.slice(0, dataLength);

    var transitionedTraces = [];

    function prepareTransitions() {
        var i;

        for(i = 0; i < traceIndices.length; i++) {
            var traceIdx = traceIndices[i];
            var trace = gd._fullData[traceIdx];
            var module = trace._module;

            // There's nothing to do if this module is not defined:
            if(!module) continue;

            // Don't register the trace as transitioned if it doens't know what to do.
            // If it *is* registered, it will receive a callback that it's responsible
            // for calling in order to register the transition as having completed.
            if(module.animatable) {
                transitionedTraces.push(traceIdx);
            }

            gd.data[traceIndices[i]] = plots.extendTrace(gd.data[traceIndices[i]], data[i]);
        }

        // Follow the same procedure. Clone it so we don't mangle the input, then
        // expand any object paths so we can merge deep into gd.layout:
        var layoutUpdate = Lib.expandObjectPaths(Lib.extendDeepNoArrays({}, layout));

        // Before merging though, we need to modify the incoming layout. We only
        // know how to *transition* layout ranges, so it's imperative that a new
        // range not be sent to the layout before the transition has started. So
        // we must remove the things we can transition:
        var axisAttrRe = /^[xy]axis[0-9]*$/;
        for(var attr in layoutUpdate) {
            if(!axisAttrRe.test(attr)) continue;
            delete layoutUpdate[attr].range;
        }

        plots.extendLayout(gd.layout, layoutUpdate);

        // Supply defaults after applying the incoming properties. Note that any attempt
        // to simplify this step and reduce the amount of work resulted in the reconstruction
        // of essentially the whole supplyDefaults step, so that it seems sensible to just use
        // supplyDefaults even though it's heavier than would otherwise be desired for
        // transitions:
        plots.supplyDefaults(gd);

        plots.doCalcdata(gd);

        ErrorBars.calc(gd);

        return Promise.resolve();
    }

    function executeCallbacks(list) {
        var p = Promise.resolve();
        if(!list) return p;
        while(list.length) {
            p = p.then((list.shift()));
        }
        return p;
    }

    function flushCallbacks(list) {
        if(!list) return;
        while(list.length) {
            list.shift();
        }
    }

    var aborted = false;

    function executeTransitions() {

        gd.emit('plotly_transitioning', []);

        return new Promise(function(resolve) {
            // This flag is used to disabled things like autorange:
            gd._transitioning = true;

            // When instantaneous updates are coming through quickly, it's too much to simply disable
            // all interaction, so store this flag so we can disambiguate whether mouse interactions
            // should be fully disabled or not:
            if(transitionOpts.duration > 0) {
                gd._transitioningWithDuration = true;
            }


            // If another transition is triggered, this callback will be executed simply because it's
            // in the interruptCallbacks queue. If this transition completes, it will instead flush
            // that queue and forget about this callback.
            gd._transitionData._interruptCallbacks.push(function() {
                aborted = true;
            });

            if(frameOpts.redraw) {
                gd._transitionData._interruptCallbacks.push(function() {
                    return Plotly.redraw(gd);
                });
            }

            // Emit this and make sure it happens last:
            gd._transitionData._interruptCallbacks.push(function() {
                gd.emit('plotly_transitioninterrupted', []);
            });

            // Construct callbacks that are executed on transition end. This ensures the d3 transitions
            // are *complete* before anything else is done.
            var numCallbacks = 0;
            var numCompleted = 0;
            function makeCallback() {
                numCallbacks++;
                return function() {
                    numCompleted++;
                    // When all are complete, perform a redraw:
                    if(!aborted && numCompleted === numCallbacks) {
                        completeTransition(resolve);
                    }
                };
            }

            var traceTransitionOpts;
            var j;
            var basePlotModules = gd._fullLayout._basePlotModules;
            var hasAxisTransition = false;

            if(layout) {
                for(j = 0; j < basePlotModules.length; j++) {
                    if(basePlotModules[j].transitionAxes) {
                        var newLayout = Lib.expandObjectPaths(layout);
                        hasAxisTransition = basePlotModules[j].transitionAxes(gd, newLayout, transitionOpts, makeCallback) || hasAxisTransition;
                    }
                }
            }

            // Here handle the exception that we refuse to animate scales and axes at the same
            // time. In other words, if there's an axis transition, then set the data transition
            // to instantaneous.
            if(hasAxisTransition) {
                traceTransitionOpts = Lib.extendFlat({}, transitionOpts);
                traceTransitionOpts.duration = 0;
            } else {
                traceTransitionOpts = transitionOpts;
            }

            for(j = 0; j < basePlotModules.length; j++) {
                // Note that we pass a callback to *create* the callback that must be invoked on completion.
                // This is since not all traces know about transitions, so it greatly simplifies matters if
                // the trace is responsible for creating a callback, if needed, and then executing it when
                // the time is right.
                basePlotModules[j].plot(gd, transitionedTraces, traceTransitionOpts, makeCallback);
            }

            // If nothing else creates a callback, then this will trigger the completion in the next tick:
            setTimeout(makeCallback());

        });
    }

    function completeTransition(callback) {
        // This a simple workaround for tests which purge the graph before animations
        // have completed. That's not a very common case, so this is the simplest
        // fix.
        if(!gd._transitionData) return;

        flushCallbacks(gd._transitionData._interruptCallbacks);

        return Promise.resolve().then(function() {
            if(frameOpts.redraw) {
                return Plotly.redraw(gd);
            }
        }).then(function() {
            // Set transitioning false again once the redraw has occurred. This is used, for example,
            // to prevent the trailing redraw from autoranging:
            gd._transitioning = false;
            gd._transitioningWithDuration = false;

            gd.emit('plotly_transitioned', []);
        }).then(callback);
    }

    function interruptPreviousTransitions() {
        // Fail-safe against purged plot:
        if(!gd._transitionData) return;

        // If a transition is interrupted, set this to false. At the moment, the only thing that would
        // interrupt a transition is another transition, so that it will momentarily be set to true
        // again, but this determines whether autorange or dragbox work, so it's for the sake of
        // cleanliness:
        gd._transitioning = false;

        return executeCallbacks(gd._transitionData._interruptCallbacks);
    }

    for(i = 0; i < traceIndices.length; i++) {
        traceIdx = traceIndices[i];
        var contFull = gd._fullData[traceIdx];
        var module = contFull._module;

        if(!module) continue;

        if(!module.animatable) {
            var thisUpdate = {};

            for(var ai in data[i]) {
                thisUpdate[ai] = [data[i][ai]];
            }
        }
    }

    var seq = [plots.previousPromises, interruptPreviousTransitions, prepareTransitions, executeTransitions];

    var transitionStarting = Lib.syncOrAsync(seq, gd);

    if(!transitionStarting || !transitionStarting.then) {
        transitionStarting = Promise.resolve();
    }

    return transitionStarting.then(function() {
        return gd;
    });
};

plots.doCalcdata = function(gd, traces) {
    var axList = Plotly.Axes.list(gd),
        fullData = gd._fullData,
        fullLayout = gd._fullLayout;

    var trace, _module, i, j;

    // XXX: Is this correct? Needs a closer look so that *some* traces can be recomputed without
    // *all* needing doCalcdata:
    var calcdata = new Array(fullData.length);
    var oldCalcdata = (gd.calcdata || []).slice(0);
    gd.calcdata = calcdata;

    // extra helper variables
    // firstscatter: fill-to-next on the first trace goes to zero
    gd.firstscatter = true;

    // how many box plots do we have (in case they're grouped)
    gd.numboxes = 0;

    // for calculating avg luminosity of heatmaps
    gd._hmpixcount = 0;
    gd._hmlumcount = 0;

    // for sharing colors across pies (and for legend)
    fullLayout._piecolormap = {};
    fullLayout._piedefaultcolorcount = 0;

    // initialize the category list, if there is one, so we start over
    // to be filled in later by ax.d2c
    for(i = 0; i < axList.length; i++) {
        axList[i]._categories = axList[i]._initialCategories.slice();
    }

    // If traces were specified and this trace was not included,
    // then transfer it over from the old calcdata:
    for(i = 0; i < fullData.length; i++) {
        if(Array.isArray(traces) && traces.indexOf(i) === -1) {
            calcdata[i] = oldCalcdata[i];
            continue;
        }
    }

    var hasCalcTransform = false;

    // transform loop
    for(i = 0; i < fullData.length; i++) {
        trace = fullData[i];

        if(trace.visible === true && trace.transforms) {
            _module = trace._module;

            // we need one round of trace module calc before
            // the calc transform to 'fill in' the categories list
            // used for example in the data-to-coordinate method
            if(_module && _module.calc) _module.calc(gd, trace);

            for(j = 0; j < trace.transforms.length; j++) {
                var transform = trace.transforms[j];

                _module = transformsRegistry[transform.type];
                if(_module && _module.calcTransform) {
                    hasCalcTransform = true;
                    _module.calcTransform(gd, trace, transform);
                }
            }
        }
    }

    // clear stuff that should recomputed in 'regular' loop
    if(hasCalcTransform) {
        for(i = 0; i < axList.length; i++) {
            axList[i]._min = [];
            axList[i]._max = [];
            axList[i]._categories = [];
        }
    }

    // 'regular' loop
    for(i = 0; i < fullData.length; i++) {
        var cd = [];

        trace = fullData[i];

        if(trace.visible === true) {
            _module = trace._module;
            if(_module && _module.calc) cd = _module.calc(gd, trace);
        }

        // Make sure there is a first point.
        //
        // This ensures there is a calcdata item for every trace,
        // even if cartesian logic doesn't handle it (for things like legends).
        //
        // Tag this artificial calc point with 'placeholder: true',
        // to make it easier to skip over them in during the plot and hover step.
        if(!Array.isArray(cd) || !cd[0]) {
            cd = [{x: false, y: false, placeholder: true}];
        }

        // add the trace-wide properties to the first point,
        // per point properties to every point
        // t is the holder for trace-wide properties
        if(!cd[0].t) cd[0].t = {};
        cd[0].trace = trace;

        calcdata[i] = cd;
    }
};

},{"../components/color":510,"../components/errorbars":539,"../lib":610,"../plotly":637,"../registry":717,"./animation_attributes":638,"./attributes":640,"./command":661,"./font_attributes":662,"./frame_attributes":663,"./layout_attributes":693,"d3":86,"fast-isnumeric":97}],703:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../../traces/scatter/attributes');
var scatterMarkerAttrs = scatterAttrs.marker;

module.exports = {
    r: scatterAttrs.r,
    t: scatterAttrs.t,
    marker: {
        color: scatterMarkerAttrs.color,
        size: scatterMarkerAttrs.size,
        symbol: scatterMarkerAttrs.symbol,
        opacity: scatterMarkerAttrs.opacity
    }
};

},{"../../traces/scatter/attributes":834}],704:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var axesAttrs = require('../cartesian/layout_attributes');
var extendFlat = require('../../lib/extend').extendFlat;

var domainAttr = extendFlat({}, axesAttrs.domain, {
    description: [
        'Polar chart subplots are not supported yet.',
        'This key has currently no effect.'
    ].join(' ')
});

function mergeAttrs(axisName, nonCommonAttrs) {
    var commonAttrs = {
        showline: {
            valType: 'boolean',
            role: 'style',
            description: [
                'Determines whether or not the line bounding this',
                axisName, 'axis',
                'will be shown on the figure.'
            ].join(' ')
        },
        showticklabels: {
            valType: 'boolean',
            role: 'style',
            description: [
                'Determines whether or not the',
                axisName, 'axis ticks',
                'will feature tick labels.'
            ].join(' ')
        },
        tickorientation: {
            valType: 'enumerated',
            values: ['horizontal', 'vertical'],
            role: 'style',
            description: [
                'Sets the orientation (from the paper perspective)',
                'of the', axisName, 'axis tick labels.'
            ].join(' ')
        },
        ticklen: {
            valType: 'number',
            min: 0,
            role: 'style',
            description: [
                'Sets the length of the tick lines on this', axisName, 'axis.'
            ].join(' ')
        },
        tickcolor: {
            valType: 'color',
            role: 'style',
            description: [
                'Sets the color of the tick lines on this', axisName, 'axis.'
            ].join(' ')
        },
        ticksuffix: {
            valType: 'string',
            role: 'style',
            description: [
                'Sets the length of the tick lines on this', axisName, 'axis.'
            ].join(' ')
        },
        endpadding: {
            valType: 'number',
            role: 'style'
        },
        visible: {
            valType: 'boolean',
            role: 'info',
            description: [
                'Determines whether or not this axis will be visible.'
            ].join(' ')
        }
    };

    return extendFlat({}, nonCommonAttrs, commonAttrs);
}

module.exports = {
    radialaxis: mergeAttrs('radial', {
        range: {
            valType: 'info_array',
            role: 'info',
            items: [
                { valType: 'number' },
                { valType: 'number' }
            ],
            description: [
                'Defines the start and end point of this radial axis.'
            ].join(' ')
        },
        domain: domainAttr,
        orientation: {
            valType: 'number',
            role: 'style',
            description: [
                'Sets the orientation (an angle with respect to the origin)',
                'of the radial axis.'
            ].join(' ')
        }
    }),

    angularaxis: mergeAttrs('angular', {
        range: {
            valType: 'info_array',
            role: 'info',
            items: [
                { valType: 'number', dflt: 0 },
                { valType: 'number', dflt: 360 }
            ],
            description: [
                'Defines the start and end point of this angular axis.'
            ].join(' ')
        },
        domain: domainAttr
    }),

    // attributes that appear at layout root
    layout: {
        direction: {
            valType: 'enumerated',
            values: ['clockwise', 'counterclockwise'],
            role: 'info',
            description: [
                'For polar plots only.',
                'Sets the direction corresponding to positive angles.'
            ].join(' ')
        },
        orientation: {
            valType: 'angle',
            role: 'info',
            description: [
                'For polar plots only.',
                'Rotates the entire polar by the given angle.'
            ].join(' ')
        }
    }
};

},{"../../lib/extend":603,"../cartesian/layout_attributes":651}],705:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Polar = module.exports = require('./micropolar');

Polar.manager = require('./micropolar_manager');

},{"./micropolar":706,"./micropolar_manager":707}],706:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

var d3 = require('d3');
var Lib = require('../../lib');
var extendDeepAll = Lib.extendDeepAll;

var µ = module.exports = { version: '0.2.2' };

µ.Axis = function module() {
    var config = {
        data: [],
        layout: {}
    }, inputConfig = {}, liveConfig = {};
    var svg, container, dispatch = d3.dispatch('hover'), radialScale, angularScale;
    var exports = {};
    function render(_container) {
        container = _container || container;
        var data = config.data;
        var axisConfig = config.layout;
        if (typeof container == 'string' || container.nodeName) container = d3.select(container);
        container.datum(data).each(function(_data, _index) {
            var dataOriginal = _data.slice();
            liveConfig = {
                data: µ.util.cloneJson(dataOriginal),
                layout: µ.util.cloneJson(axisConfig)
            };
            var colorIndex = 0;
            dataOriginal.forEach(function(d, i) {
                if (!d.color) {
                    d.color = axisConfig.defaultColorRange[colorIndex];
                    colorIndex = (colorIndex + 1) % axisConfig.defaultColorRange.length;
                }
                if (!d.strokeColor) {
                    d.strokeColor = d.geometry === 'LinePlot' ? d.color : d3.rgb(d.color).darker().toString();
                }
                liveConfig.data[i].color = d.color;
                liveConfig.data[i].strokeColor = d.strokeColor;
                liveConfig.data[i].strokeDash = d.strokeDash;
                liveConfig.data[i].strokeSize = d.strokeSize;
            });
            var data = dataOriginal.filter(function(d, i) {
                var visible = d.visible;
                return typeof visible === 'undefined' || visible === true;
            });
            var isStacked = false;
            var dataWithGroupId = data.map(function(d, i) {
                isStacked = isStacked || typeof d.groupId !== 'undefined';
                return d;
            });
            if (isStacked) {
                var grouped = d3.nest().key(function(d, i) {
                    return typeof d.groupId != 'undefined' ? d.groupId : 'unstacked';
                }).entries(dataWithGroupId);
                var dataYStack = [];
                var stacked = grouped.map(function(d, i) {
                    if (d.key === 'unstacked') return d.values; else {
                        var prevArray = d.values[0].r.map(function(d, i) {
                            return 0;
                        });
                        d.values.forEach(function(d, i, a) {
                            d.yStack = [ prevArray ];
                            dataYStack.push(prevArray);
                            prevArray = µ.util.sumArrays(d.r, prevArray);
                        });
                        return d.values;
                    }
                });
                data = d3.merge(stacked);
            }
            data.forEach(function(d, i) {
                d.t = Array.isArray(d.t[0]) ? d.t : [ d.t ];
                d.r = Array.isArray(d.r[0]) ? d.r : [ d.r ];
            });
            var radius = Math.min(axisConfig.width - axisConfig.margin.left - axisConfig.margin.right, axisConfig.height - axisConfig.margin.top - axisConfig.margin.bottom) / 2;
            radius = Math.max(10, radius);
            var chartCenter = [ axisConfig.margin.left + radius, axisConfig.margin.top + radius ];
            var extent;
            if (isStacked) {
                var highestStackedValue = d3.max(µ.util.sumArrays(µ.util.arrayLast(data).r[0], µ.util.arrayLast(dataYStack)));
                extent = [ 0, highestStackedValue ];
            } else extent = d3.extent(µ.util.flattenArray(data.map(function(d, i) {
                return d.r;
            })));
            if (axisConfig.radialAxis.domain != µ.DATAEXTENT) extent[0] = 0;
            radialScale = d3.scale.linear().domain(axisConfig.radialAxis.domain != µ.DATAEXTENT && axisConfig.radialAxis.domain ? axisConfig.radialAxis.domain : extent).range([ 0, radius ]);
            liveConfig.layout.radialAxis.domain = radialScale.domain();
            var angularDataMerged = µ.util.flattenArray(data.map(function(d, i) {
                return d.t;
            }));
            var isOrdinal = typeof angularDataMerged[0] === 'string';
            var ticks;
            if (isOrdinal) {
                angularDataMerged = µ.util.deduplicate(angularDataMerged);
                ticks = angularDataMerged.slice();
                angularDataMerged = d3.range(angularDataMerged.length);
                data = data.map(function(d, i) {
                    var result = d;
                    d.t = [ angularDataMerged ];
                    if (isStacked) result.yStack = d.yStack;
                    return result;
                });
            }
            var hasOnlyLineOrDotPlot = data.filter(function(d, i) {
                return d.geometry === 'LinePlot' || d.geometry === 'DotPlot';
            }).length === data.length;
            var needsEndSpacing = axisConfig.needsEndSpacing === null ? isOrdinal || !hasOnlyLineOrDotPlot : axisConfig.needsEndSpacing;
            var useProvidedDomain = axisConfig.angularAxis.domain && axisConfig.angularAxis.domain != µ.DATAEXTENT && !isOrdinal && axisConfig.angularAxis.domain[0] >= 0;
            var angularDomain = useProvidedDomain ? axisConfig.angularAxis.domain : d3.extent(angularDataMerged);
            var angularDomainStep = Math.abs(angularDataMerged[1] - angularDataMerged[0]);
            if (hasOnlyLineOrDotPlot && !isOrdinal) angularDomainStep = 0;
            var angularDomainWithPadding = angularDomain.slice();
            if (needsEndSpacing && isOrdinal) angularDomainWithPadding[1] += angularDomainStep;
            var tickCount = axisConfig.angularAxis.ticksCount || 4;
            if (tickCount > 8) tickCount = tickCount / (tickCount / 8) + tickCount % 8;
            if (axisConfig.angularAxis.ticksStep) {
                tickCount = (angularDomainWithPadding[1] - angularDomainWithPadding[0]) / tickCount;
            }
            var angularTicksStep = axisConfig.angularAxis.ticksStep || (angularDomainWithPadding[1] - angularDomainWithPadding[0]) / (tickCount * (axisConfig.minorTicks + 1));
            if (ticks) angularTicksStep = Math.max(Math.round(angularTicksStep), 1);
            if (!angularDomainWithPadding[2]) angularDomainWithPadding[2] = angularTicksStep;
            var angularAxisRange = d3.range.apply(this, angularDomainWithPadding);
            angularAxisRange = angularAxisRange.map(function(d, i) {
                return parseFloat(d.toPrecision(12));
            });
            angularScale = d3.scale.linear().domain(angularDomainWithPadding.slice(0, 2)).range(axisConfig.direction === 'clockwise' ? [ 0, 360 ] : [ 360, 0 ]);
            liveConfig.layout.angularAxis.domain = angularScale.domain();
            liveConfig.layout.angularAxis.endPadding = needsEndSpacing ? angularDomainStep : 0;
            svg = d3.select(this).select('svg.chart-root');
            if (typeof svg === 'undefined' || svg.empty()) {
                var skeleton = "<svg xmlns='http://www.w3.org/2000/svg' class='chart-root'>' + '<g class='outer-group'>' + '<g class='chart-group'>' + '<circle class='background-circle'></circle>' + '<g class='geometry-group'></g>' + '<g class='radial axis-group'>' + '<circle class='outside-circle'></circle>' + '</g>' + '<g class='angular axis-group'></g>' + '<g class='guides-group'><line></line><circle r='0'></circle></g>' + '</g>' + '<g class='legend-group'></g>' + '<g class='tooltips-group'></g>' + '<g class='title-group'><text></text></g>' + '</g>' + '</svg>";
                var doc = new DOMParser().parseFromString(skeleton, 'application/xml');
                var newSvg = this.appendChild(this.ownerDocument.importNode(doc.documentElement, true));
                svg = d3.select(newSvg);
            }
            svg.select('.guides-group').style({
                'pointer-events': 'none'
            });
            svg.select('.angular.axis-group').style({
                'pointer-events': 'none'
            });
            svg.select('.radial.axis-group').style({
                'pointer-events': 'none'
            });
            var chartGroup = svg.select('.chart-group');
            var lineStyle = {
                fill: 'none',
                stroke: axisConfig.tickColor
            };
            var fontStyle = {
                'font-size': axisConfig.font.size,
                'font-family': axisConfig.font.family,
                fill: axisConfig.font.color,
                'text-shadow': [ '-1px 0px', '1px -1px', '-1px 1px', '1px 1px' ].map(function(d, i) {
                    return ' ' + d + ' 0 ' + axisConfig.font.outlineColor;
                }).join(',')
            };
            var legendContainer;
            if (axisConfig.showLegend) {
                legendContainer = svg.select('.legend-group').attr({
                    transform: 'translate(' + [ radius, axisConfig.margin.top ] + ')'
                }).style({
                    display: 'block'
                });
                var elements = data.map(function(d, i) {
                    var datumClone = µ.util.cloneJson(d);
                    datumClone.symbol = d.geometry === 'DotPlot' ? d.dotType || 'circle' : d.geometry != 'LinePlot' ? 'square' : 'line';
                    datumClone.visibleInLegend = typeof d.visibleInLegend === 'undefined' || d.visibleInLegend;
                    datumClone.color = d.geometry === 'LinePlot' ? d.strokeColor : d.color;
                    return datumClone;
                });

                µ.Legend().config({
                    data: data.map(function(d, i) {
                        return d.name || 'Element' + i;
                    }),
                    legendConfig: extendDeepAll({},
                        µ.Legend.defaultConfig().legendConfig,
                        {
                            container: legendContainer,
                            elements: elements,
                            reverseOrder: axisConfig.legend.reverseOrder
                        }
                    )
                })();

                var legendBBox = legendContainer.node().getBBox();
                radius = Math.min(axisConfig.width - legendBBox.width - axisConfig.margin.left - axisConfig.margin.right, axisConfig.height - axisConfig.margin.top - axisConfig.margin.bottom) / 2;
                radius = Math.max(10, radius);
                chartCenter = [ axisConfig.margin.left + radius, axisConfig.margin.top + radius ];
                radialScale.range([ 0, radius ]);
                liveConfig.layout.radialAxis.domain = radialScale.domain();
                legendContainer.attr('transform', 'translate(' + [ chartCenter[0] + radius, chartCenter[1] - radius ] + ')');
            } else {
                legendContainer = svg.select('.legend-group').style({
                    display: 'none'
                });
            }
            svg.attr({
                width: axisConfig.width,
                height: axisConfig.height
            }).style({
                opacity: axisConfig.opacity
            });
            chartGroup.attr('transform', 'translate(' + chartCenter + ')').style({
                cursor: 'crosshair'
            });
            var centeringOffset = [ (axisConfig.width - (axisConfig.margin.left + axisConfig.margin.right + radius * 2 + (legendBBox ? legendBBox.width : 0))) / 2, (axisConfig.height - (axisConfig.margin.top + axisConfig.margin.bottom + radius * 2)) / 2 ];
            centeringOffset[0] = Math.max(0, centeringOffset[0]);
            centeringOffset[1] = Math.max(0, centeringOffset[1]);
            svg.select('.outer-group').attr('transform', 'translate(' + centeringOffset + ')');
            if (axisConfig.title) {
                var title = svg.select('g.title-group text').style(fontStyle).text(axisConfig.title);
                var titleBBox = title.node().getBBox();
                title.attr({
                    x: chartCenter[0] - titleBBox.width / 2,
                    y: chartCenter[1] - radius - 20
                });
            }
            var radialAxis = svg.select('.radial.axis-group');
            if (axisConfig.radialAxis.gridLinesVisible) {
                var gridCircles = radialAxis.selectAll('circle.grid-circle').data(radialScale.ticks(5));
                gridCircles.enter().append('circle').attr({
                    'class': 'grid-circle'
                }).style(lineStyle);
                gridCircles.attr('r', radialScale);
                gridCircles.exit().remove();
            }
            radialAxis.select('circle.outside-circle').attr({
                r: radius
            }).style(lineStyle);
            var backgroundCircle = svg.select('circle.background-circle').attr({
                r: radius
            }).style({
                fill: axisConfig.backgroundColor,
                stroke: axisConfig.stroke
            });
            function currentAngle(d, i) {
                return angularScale(d) % 360 + axisConfig.orientation;
            }
            if (axisConfig.radialAxis.visible) {
                var axis = d3.svg.axis().scale(radialScale).ticks(5).tickSize(5);
                radialAxis.call(axis).attr({
                    transform: 'rotate(' + axisConfig.radialAxis.orientation + ')'
                });
                radialAxis.selectAll('.domain').style(lineStyle);
                radialAxis.selectAll('g>text').text(function(d, i) {
                    return this.textContent + axisConfig.radialAxis.ticksSuffix;
                }).style(fontStyle).style({
                    'text-anchor': 'start'
                }).attr({
                    x: 0,
                    y: 0,
                    dx: 0,
                    dy: 0,
                    transform: function(d, i) {
                        if (axisConfig.radialAxis.tickOrientation === 'horizontal') {
                            return 'rotate(' + -axisConfig.radialAxis.orientation + ') translate(' + [ 0, fontStyle['font-size'] ] + ')';
                        } else return 'translate(' + [ 0, fontStyle['font-size'] ] + ')';
                    }
                });
                radialAxis.selectAll('g>line').style({
                    stroke: 'black'
                });
            }
            var angularAxis = svg.select('.angular.axis-group').selectAll('g.angular-tick').data(angularAxisRange);
            var angularAxisEnter = angularAxis.enter().append('g').classed('angular-tick', true);
            angularAxis.attr({
                transform: function(d, i) {
                    return 'rotate(' + currentAngle(d, i) + ')';
                }
            }).style({
                display: axisConfig.angularAxis.visible ? 'block' : 'none'
            });
            angularAxis.exit().remove();
            angularAxisEnter.append('line').classed('grid-line', true).classed('major', function(d, i) {
                return i % (axisConfig.minorTicks + 1) == 0;
            }).classed('minor', function(d, i) {
                return !(i % (axisConfig.minorTicks + 1) == 0);
            }).style(lineStyle);
            angularAxisEnter.selectAll('.minor').style({
                stroke: axisConfig.minorTickColor
            });
            angularAxis.select('line.grid-line').attr({
                x1: axisConfig.tickLength ? radius - axisConfig.tickLength : 0,
                x2: radius
            }).style({
                display: axisConfig.angularAxis.gridLinesVisible ? 'block' : 'none'
            });
            angularAxisEnter.append('text').classed('axis-text', true).style(fontStyle);
            var ticksText = angularAxis.select('text.axis-text').attr({
                x: radius + axisConfig.labelOffset,
                dy: '.35em',
                transform: function(d, i) {
                    var angle = currentAngle(d, i);
                    var rad = radius + axisConfig.labelOffset;
                    var orient = axisConfig.angularAxis.tickOrientation;
                    if (orient == 'horizontal') return 'rotate(' + -angle + ' ' + rad + ' 0)'; else if (orient == 'radial') return angle < 270 && angle > 90 ? 'rotate(180 ' + rad + ' 0)' : null; else return 'rotate(' + (angle <= 180 && angle > 0 ? -90 : 90) + ' ' + rad + ' 0)';
                }
            }).style({
                'text-anchor': 'middle',
                display: axisConfig.angularAxis.labelsVisible ? 'block' : 'none'
            }).text(function(d, i) {
                if (i % (axisConfig.minorTicks + 1) != 0) return '';
                if (ticks) {
                    return ticks[d] + axisConfig.angularAxis.ticksSuffix;
                } else return d + axisConfig.angularAxis.ticksSuffix;
            }).style(fontStyle);
            if (axisConfig.angularAxis.rewriteTicks) ticksText.text(function(d, i) {
                if (i % (axisConfig.minorTicks + 1) != 0) return '';
                return axisConfig.angularAxis.rewriteTicks(this.textContent, i);
            });
            var rightmostTickEndX = d3.max(chartGroup.selectAll('.angular-tick text')[0].map(function(d, i) {
                return d.getCTM().e + d.getBBox().width;
            }));
            legendContainer.attr({
                transform: 'translate(' + [ radius + rightmostTickEndX, axisConfig.margin.top ] + ')'
            });
            var hasGeometry = svg.select('g.geometry-group').selectAll('g').size() > 0;
            var geometryContainer = svg.select('g.geometry-group').selectAll('g.geometry').data(data);
            geometryContainer.enter().append('g').attr({
                'class': function(d, i) {
                    return 'geometry geometry' + i;
                }
            });
            geometryContainer.exit().remove();
            if (data[0] || hasGeometry) {
                var geometryConfigs = [];
                data.forEach(function(d, i) {
                    var geometryConfig = {};
                    geometryConfig.radialScale = radialScale;
                    geometryConfig.angularScale = angularScale;
                    geometryConfig.container = geometryContainer.filter(function(dB, iB) {
                        return iB == i;
                    });
                    geometryConfig.geometry = d.geometry;
                    geometryConfig.orientation = axisConfig.orientation;
                    geometryConfig.direction = axisConfig.direction;
                    geometryConfig.index = i;
                    geometryConfigs.push({
                        data: d,
                        geometryConfig: geometryConfig
                    });
                });
                var geometryConfigsGrouped = d3.nest().key(function(d, i) {
                    return typeof d.data.groupId != 'undefined' || 'unstacked';
                }).entries(geometryConfigs);
                var geometryConfigsGrouped2 = [];
                geometryConfigsGrouped.forEach(function(d, i) {
                    if (d.key === 'unstacked') geometryConfigsGrouped2 = geometryConfigsGrouped2.concat(d.values.map(function(d, i) {
                        return [ d ];
                    })); else geometryConfigsGrouped2.push(d.values);
                });
                geometryConfigsGrouped2.forEach(function(d, i) {
                    var geometry;
                    if (Array.isArray(d)) geometry = d[0].geometryConfig.geometry; else geometry = d.geometryConfig.geometry;
                    var finalGeometryConfig = d.map(function(dB, iB) {
                        return extendDeepAll(µ[geometry].defaultConfig(), dB);
                    });
                    µ[geometry]().config(finalGeometryConfig)();
                });
            }
            var guides = svg.select('.guides-group');
            var tooltipContainer = svg.select('.tooltips-group');
            var angularTooltip = µ.tooltipPanel().config({
                container: tooltipContainer,
                fontSize: 8
            })();
            var radialTooltip = µ.tooltipPanel().config({
                container: tooltipContainer,
                fontSize: 8
            })();
            var geometryTooltip = µ.tooltipPanel().config({
                container: tooltipContainer,
                hasTick: true
            })();
            var angularValue, radialValue;
            if (!isOrdinal) {
                var angularGuideLine = guides.select('line').attr({
                    x1: 0,
                    y1: 0,
                    y2: 0
                }).style({
                    stroke: 'grey',
                    'pointer-events': 'none'
                });
                chartGroup.on('mousemove.angular-guide', function(d, i) {
                    var mouseAngle = µ.util.getMousePos(backgroundCircle).angle;
                    angularGuideLine.attr({
                        x2: -radius,
                        transform: 'rotate(' + mouseAngle + ')'
                    }).style({
                        opacity: .5
                    });
                    var angleWithOriginOffset = (mouseAngle + 180 + 360 - axisConfig.orientation) % 360;
                    angularValue = angularScale.invert(angleWithOriginOffset);
                    var pos = µ.util.convertToCartesian(radius + 12, mouseAngle + 180);
                    angularTooltip.text(µ.util.round(angularValue)).move([ pos[0] + chartCenter[0], pos[1] + chartCenter[1] ]);
                }).on('mouseout.angular-guide', function(d, i) {
                    guides.select('line').style({
                        opacity: 0
                    });
                });
            }
            var angularGuideCircle = guides.select('circle').style({
                stroke: 'grey',
                fill: 'none'
            });
            chartGroup.on('mousemove.radial-guide', function(d, i) {
                var r = µ.util.getMousePos(backgroundCircle).radius;
                angularGuideCircle.attr({
                    r: r
                }).style({
                    opacity: .5
                });
                radialValue = radialScale.invert(µ.util.getMousePos(backgroundCircle).radius);
                var pos = µ.util.convertToCartesian(r, axisConfig.radialAxis.orientation);
                radialTooltip.text(µ.util.round(radialValue)).move([ pos[0] + chartCenter[0], pos[1] + chartCenter[1] ]);
            }).on('mouseout.radial-guide', function(d, i) {
                angularGuideCircle.style({
                    opacity: 0
                });
                geometryTooltip.hide();
                angularTooltip.hide();
                radialTooltip.hide();
            });
            svg.selectAll('.geometry-group .mark').on('mouseover.tooltip', function(d, i) {
                var el = d3.select(this);
                var color = el.style('fill');
                var newColor = 'black';
                var opacity = el.style('opacity') || 1;
                el.attr({
                    'data-opacity': opacity
                });
                if (color != 'none') {
                    el.attr({
                        'data-fill': color
                    });
                    newColor = d3.hsl(color).darker().toString();
                    el.style({
                        fill: newColor,
                        opacity: 1
                    });
                    var textData = {
                        t: µ.util.round(d[0]),
                        r: µ.util.round(d[1])
                    };
                    if (isOrdinal) textData.t = ticks[d[0]];
                    var text = 't: ' + textData.t + ', r: ' + textData.r;
                    var bbox = this.getBoundingClientRect();
                    var svgBBox = svg.node().getBoundingClientRect();
                    var pos = [ bbox.left + bbox.width / 2 - centeringOffset[0] - svgBBox.left, bbox.top + bbox.height / 2 - centeringOffset[1] - svgBBox.top ];
                    geometryTooltip.config({
                        color: newColor
                    }).text(text);
                    geometryTooltip.move(pos);
                } else {
                    color = el.style('stroke');
                    el.attr({
                        'data-stroke': color
                    });
                    newColor = d3.hsl(color).darker().toString();
                    el.style({
                        stroke: newColor,
                        opacity: 1
                    });
                }
            }).on('mousemove.tooltip', function(d, i) {
                if (d3.event.which != 0) return false;
                if (d3.select(this).attr('data-fill')) geometryTooltip.show();
            }).on('mouseout.tooltip', function(d, i) {
                geometryTooltip.hide();
                var el = d3.select(this);
                var fillColor = el.attr('data-fill');
                if (fillColor) el.style({
                    fill: fillColor,
                    opacity: el.attr('data-opacity')
                }); else el.style({
                    stroke: el.attr('data-stroke'),
                    opacity: el.attr('data-opacity')
                });
            });
        });
        return exports;
    }
    exports.render = function(_container) {
        render(_container);
        return this;
    };
    exports.config = function(_x) {
        if (!arguments.length) return config;
        var xClone = µ.util.cloneJson(_x);
        xClone.data.forEach(function(d, i) {
            if (!config.data[i]) config.data[i] = {};
            extendDeepAll(config.data[i], µ.Axis.defaultConfig().data[0]);
            extendDeepAll(config.data[i], d);
        });
        extendDeepAll(config.layout, µ.Axis.defaultConfig().layout);
        extendDeepAll(config.layout, xClone.layout);
        return this;
    };
    exports.getLiveConfig = function() {
        return liveConfig;
    };
    exports.getinputConfig = function() {
        return inputConfig;
    };
    exports.radialScale = function(_x) {
        return radialScale;
    };
    exports.angularScale = function(_x) {
        return angularScale;
    };
    exports.svg = function() {
        return svg;
    };
    d3.rebind(exports, dispatch, 'on');
    return exports;
};

µ.Axis.defaultConfig = function(d, i) {
    var config = {
        data: [ {
            t: [ 1, 2, 3, 4 ],
            r: [ 10, 11, 12, 13 ],
            name: 'Line1',
            geometry: 'LinePlot',
            color: null,
            strokeDash: 'solid',
            strokeColor: null,
            strokeSize: '1',
            visibleInLegend: true,
            opacity: 1
        } ],
        layout: {
            defaultColorRange: d3.scale.category10().range(),
            title: null,
            height: 450,
            width: 500,
            margin: {
                top: 40,
                right: 40,
                bottom: 40,
                left: 40
            },
            font: {
                size: 12,
                color: 'gray',
                outlineColor: 'white',
                family: 'Tahoma, sans-serif'
            },
            direction: 'clockwise',
            orientation: 0,
            labelOffset: 10,
            radialAxis: {
                domain: null,
                orientation: -45,
                ticksSuffix: '',
                visible: true,
                gridLinesVisible: true,
                tickOrientation: 'horizontal',
                rewriteTicks: null
            },
            angularAxis: {
                domain: [ 0, 360 ],
                ticksSuffix: '',
                visible: true,
                gridLinesVisible: true,
                labelsVisible: true,
                tickOrientation: 'horizontal',
                rewriteTicks: null,
                ticksCount: null,
                ticksStep: null
            },
            minorTicks: 0,
            tickLength: null,
            tickColor: 'silver',
            minorTickColor: '#eee',
            backgroundColor: 'none',
            needsEndSpacing: null,
            showLegend: true,
            legend: {
                reverseOrder: false
            },
            opacity: 1
        }
    };
    return config;
};

µ.util = {};

µ.DATAEXTENT = 'dataExtent';

µ.AREA = 'AreaChart';

µ.LINE = 'LinePlot';

µ.DOT = 'DotPlot';

µ.BAR = 'BarChart';

µ.util._override = function(_objA, _objB) {
    for (var x in _objA) if (x in _objB) _objB[x] = _objA[x];
};

µ.util._extend = function(_objA, _objB) {
    for (var x in _objA) _objB[x] = _objA[x];
};

µ.util._rndSnd = function() {
    return Math.random() * 2 - 1 + (Math.random() * 2 - 1) + (Math.random() * 2 - 1);
};

µ.util.dataFromEquation2 = function(_equation, _step) {
    var step = _step || 6;
    var data = d3.range(0, 360 + step, step).map(function(deg, index) {
        var theta = deg * Math.PI / 180;
        var radius = _equation(theta);
        return [ deg, radius ];
    });
    return data;
};

µ.util.dataFromEquation = function(_equation, _step, _name) {
    var step = _step || 6;
    var t = [], r = [];
    d3.range(0, 360 + step, step).forEach(function(deg, index) {
        var theta = deg * Math.PI / 180;
        var radius = _equation(theta);
        t.push(deg);
        r.push(radius);
    });
    var result = {
        t: t,
        r: r
    };
    if (_name) result.name = _name;
    return result;
};

µ.util.ensureArray = function(_val, _count) {
    if (typeof _val === 'undefined') return null;
    var arr = [].concat(_val);
    return d3.range(_count).map(function(d, i) {
        return arr[i] || arr[0];
    });
};

µ.util.fillArrays = function(_obj, _valueNames, _count) {
    _valueNames.forEach(function(d, i) {
        _obj[d] = µ.util.ensureArray(_obj[d], _count);
    });
    return _obj;
};

µ.util.cloneJson = function(json) {
    return JSON.parse(JSON.stringify(json));
};

µ.util.validateKeys = function(obj, keys) {
    if (typeof keys === 'string') keys = keys.split('.');
    var next = keys.shift();
    return obj[next] && (!keys.length || objHasKeys(obj[next], keys));
};

µ.util.sumArrays = function(a, b) {
    return d3.zip(a, b).map(function(d, i) {
        return d3.sum(d);
    });
};

µ.util.arrayLast = function(a) {
    return a[a.length - 1];
};

µ.util.arrayEqual = function(a, b) {
    var i = Math.max(a.length, b.length, 1);
    while (i-- >= 0 && a[i] === b[i]) ;
    return i === -2;
};

µ.util.flattenArray = function(arr) {
    var r = [];
    while (!µ.util.arrayEqual(r, arr)) {
        r = arr;
        arr = [].concat.apply([], arr);
    }
    return arr;
};

µ.util.deduplicate = function(arr) {
    return arr.filter(function(v, i, a) {
        return a.indexOf(v) == i;
    });
};

µ.util.convertToCartesian = function(radius, theta) {
    var thetaRadians = theta * Math.PI / 180;
    var x = radius * Math.cos(thetaRadians);
    var y = radius * Math.sin(thetaRadians);
    return [ x, y ];
};

µ.util.round = function(_value, _digits) {
    var digits = _digits || 2;
    var mult = Math.pow(10, digits);
    return Math.round(_value * mult) / mult;
};

µ.util.getMousePos = function(_referenceElement) {
    var mousePos = d3.mouse(_referenceElement.node());
    var mouseX = mousePos[0];
    var mouseY = mousePos[1];
    var mouse = {};
    mouse.x = mouseX;
    mouse.y = mouseY;
    mouse.pos = mousePos;
    mouse.angle = (Math.atan2(mouseY, mouseX) + Math.PI) * 180 / Math.PI;
    mouse.radius = Math.sqrt(mouseX * mouseX + mouseY * mouseY);
    return mouse;
};

µ.util.duplicatesCount = function(arr) {
    var uniques = {}, val;
    var dups = {};
    for (var i = 0, len = arr.length; i < len; i++) {
        val = arr[i];
        if (val in uniques) {
            uniques[val]++;
            dups[val] = uniques[val];
        } else {
            uniques[val] = 1;
        }
    }
    return dups;
};

µ.util.duplicates = function(arr) {
    return Object.keys(µ.util.duplicatesCount(arr));
};

µ.util.translator = function(obj, sourceBranch, targetBranch, reverse) {
    if (reverse) {
        var targetBranchCopy = targetBranch.slice();
        targetBranch = sourceBranch;
        sourceBranch = targetBranchCopy;
    }
    var value = sourceBranch.reduce(function(previousValue, currentValue) {
        if (typeof previousValue != 'undefined') return previousValue[currentValue];
    }, obj);
    if (typeof value === 'undefined') return;
    sourceBranch.reduce(function(previousValue, currentValue, index) {
        if (typeof previousValue == 'undefined') return;
        if (index === sourceBranch.length - 1) delete previousValue[currentValue];
        return previousValue[currentValue];
    }, obj);
    targetBranch.reduce(function(previousValue, currentValue, index) {
        if (typeof previousValue[currentValue] === 'undefined') previousValue[currentValue] = {};
        if (index === targetBranch.length - 1) previousValue[currentValue] = value;
        return previousValue[currentValue];
    }, obj);
};

µ.PolyChart = function module() {
    var config = [ µ.PolyChart.defaultConfig() ];
    var dispatch = d3.dispatch('hover');
    var dashArray = {
        solid: 'none',
        dash: [ 5, 2 ],
        dot: [ 2, 5 ]
    };
    var colorScale;
    function exports() {
        var geometryConfig = config[0].geometryConfig;
        var container = geometryConfig.container;
        if (typeof container == 'string') container = d3.select(container);
        container.datum(config).each(function(_config, _index) {
            var isStack = !!_config[0].data.yStack;
            var data = _config.map(function(d, i) {
                if (isStack) return d3.zip(d.data.t[0], d.data.r[0], d.data.yStack[0]); else return d3.zip(d.data.t[0], d.data.r[0]);
            });
            var angularScale = geometryConfig.angularScale;
            var domainMin = geometryConfig.radialScale.domain()[0];
            var generator = {};
            generator.bar = function(d, i, pI) {
                var dataConfig = _config[pI].data;
                var h = geometryConfig.radialScale(d[1]) - geometryConfig.radialScale(0);
                var stackTop = geometryConfig.radialScale(d[2] || 0);
                var w = dataConfig.barWidth;
                d3.select(this).attr({
                    'class': 'mark bar',
                    d: 'M' + [ [ h + stackTop, -w / 2 ], [ h + stackTop, w / 2 ], [ stackTop, w / 2 ], [ stackTop, -w / 2 ] ].join('L') + 'Z',
                    transform: function(d, i) {
                        return 'rotate(' + (geometryConfig.orientation + angularScale(d[0])) + ')';
                    }
                });
            };
            generator.dot = function(d, i, pI) {
                var stackedData = d[2] ? [ d[0], d[1] + d[2] ] : d;
                var symbol = d3.svg.symbol().size(_config[pI].data.dotSize).type(_config[pI].data.dotType)(d, i);
                d3.select(this).attr({
                    'class': 'mark dot',
                    d: symbol,
                    transform: function(d, i) {
                        var coord = convertToCartesian(getPolarCoordinates(stackedData));
                        return 'translate(' + [ coord.x, coord.y ] + ')';
                    }
                });
            };
            var line = d3.svg.line.radial().interpolate(_config[0].data.lineInterpolation).radius(function(d) {
                return geometryConfig.radialScale(d[1]);
            }).angle(function(d) {
                return geometryConfig.angularScale(d[0]) * Math.PI / 180;
            });
            generator.line = function(d, i, pI) {
                var lineData = d[2] ? data[pI].map(function(d, i) {
                    return [ d[0], d[1] + d[2] ];
                }) : data[pI];
                d3.select(this).each(generator['dot']).style({
                    opacity: function(dB, iB) {
                        return +_config[pI].data.dotVisible;
                    },
                    fill: markStyle.stroke(d, i, pI)
                }).attr({
                    'class': 'mark dot'
                });
                if (i > 0) return;
                var lineSelection = d3.select(this.parentNode).selectAll('path.line').data([ 0 ]);
                lineSelection.enter().insert('path');
                lineSelection.attr({
                    'class': 'line',
                    d: line(lineData),
                    transform: function(dB, iB) {
                        return 'rotate(' + (geometryConfig.orientation + 90) + ')';
                    },
                    'pointer-events': 'none'
                }).style({
                    fill: function(dB, iB) {
                        return markStyle.fill(d, i, pI);
                    },
                    'fill-opacity': 0,
                    stroke: function(dB, iB) {
                        return markStyle.stroke(d, i, pI);
                    },
                    'stroke-width': function(dB, iB) {
                        return markStyle['stroke-width'](d, i, pI);
                    },
                    'stroke-dasharray': function(dB, iB) {
                        return markStyle['stroke-dasharray'](d, i, pI);
                    },
                    opacity: function(dB, iB) {
                        return markStyle.opacity(d, i, pI);
                    },
                    display: function(dB, iB) {
                        return markStyle.display(d, i, pI);
                    }
                });
            };
            var angularRange = geometryConfig.angularScale.range();
            var triangleAngle = Math.abs(angularRange[1] - angularRange[0]) / data[0].length * Math.PI / 180;
            var arc = d3.svg.arc().startAngle(function(d) {
                return -triangleAngle / 2;
            }).endAngle(function(d) {
                return triangleAngle / 2;
            }).innerRadius(function(d) {
                return geometryConfig.radialScale(domainMin + (d[2] || 0));
            }).outerRadius(function(d) {
                return geometryConfig.radialScale(domainMin + (d[2] || 0)) + geometryConfig.radialScale(d[1]);
            });
            generator.arc = function(d, i, pI) {
                d3.select(this).attr({
                    'class': 'mark arc',
                    d: arc,
                    transform: function(d, i) {
                        return 'rotate(' + (geometryConfig.orientation + angularScale(d[0]) + 90) + ')';
                    }
                });
            };
            var markStyle = {
                fill: function(d, i, pI) {
                    return _config[pI].data.color;
                },
                stroke: function(d, i, pI) {
                    return _config[pI].data.strokeColor;
                },
                'stroke-width': function(d, i, pI) {
                    return _config[pI].data.strokeSize + 'px';
                },
                'stroke-dasharray': function(d, i, pI) {
                    return dashArray[_config[pI].data.strokeDash];
                },
                opacity: function(d, i, pI) {
                    return _config[pI].data.opacity;
                },
                display: function(d, i, pI) {
                    return typeof _config[pI].data.visible === 'undefined' || _config[pI].data.visible ? 'block' : 'none';
                }
            };
            var geometryLayer = d3.select(this).selectAll('g.layer').data(data);
            geometryLayer.enter().append('g').attr({
                'class': 'layer'
            });
            var geometry = geometryLayer.selectAll('path.mark').data(function(d, i) {
                return d;
            });
            geometry.enter().append('path').attr({
                'class': 'mark'
            });
            geometry.style(markStyle).each(generator[geometryConfig.geometryType]);
            geometry.exit().remove();
            geometryLayer.exit().remove();
            function getPolarCoordinates(d, i) {
                var r = geometryConfig.radialScale(d[1]);
                var t = (geometryConfig.angularScale(d[0]) + geometryConfig.orientation) * Math.PI / 180;
                return {
                    r: r,
                    t: t
                };
            }
            function convertToCartesian(polarCoordinates) {
                var x = polarCoordinates.r * Math.cos(polarCoordinates.t);
                var y = polarCoordinates.r * Math.sin(polarCoordinates.t);
                return {
                    x: x,
                    y: y
                };
            }
        });
    }
    exports.config = function(_x) {
        if (!arguments.length) return config;
        _x.forEach(function(d, i) {
            if (!config[i]) config[i] = {};
            extendDeepAll(config[i], µ.PolyChart.defaultConfig());
            extendDeepAll(config[i], d);
        });
        return this;
    };
    exports.getColorScale = function() {
        return colorScale;
    };
    d3.rebind(exports, dispatch, 'on');
    return exports;
};

µ.PolyChart.defaultConfig = function() {
    var config = {
        data: {
            name: 'geom1',
            t: [ [ 1, 2, 3, 4 ] ],
            r: [ [ 1, 2, 3, 4 ] ],
            dotType: 'circle',
            dotSize: 64,
            dotVisible: false,
            barWidth: 20,
            color: '#ffa500',
            strokeSize: 1,
            strokeColor: 'silver',
            strokeDash: 'solid',
            opacity: 1,
            index: 0,
            visible: true,
            visibleInLegend: true
        },
        geometryConfig: {
            geometry: 'LinePlot',
            geometryType: 'arc',
            direction: 'clockwise',
            orientation: 0,
            container: 'body',
            radialScale: null,
            angularScale: null,
            colorScale: d3.scale.category20()
        }
    };
    return config;
};

µ.BarChart = function module() {
    return µ.PolyChart();
};

µ.BarChart.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'bar'
        }
    };
    return config;
};

µ.AreaChart = function module() {
    return µ.PolyChart();
};

µ.AreaChart.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'arc'
        }
    };
    return config;
};

µ.DotPlot = function module() {
    return µ.PolyChart();
};

µ.DotPlot.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'dot',
            dotType: 'circle'
        }
    };
    return config;
};

µ.LinePlot = function module() {
    return µ.PolyChart();
};

µ.LinePlot.defaultConfig = function() {
    var config = {
        geometryConfig: {
            geometryType: 'line'
        }
    };
    return config;
};

µ.Legend = function module() {
    var config = µ.Legend.defaultConfig();
    var dispatch = d3.dispatch('hover');
    function exports() {
        var legendConfig = config.legendConfig;
        var flattenData = config.data.map(function(d, i) {
            return [].concat(d).map(function(dB, iB) {
                var element = extendDeepAll({}, legendConfig.elements[i]);
                element.name = dB;
                element.color = [].concat(legendConfig.elements[i].color)[iB];
                return element;
            });
        });
        var data = d3.merge(flattenData);
        data = data.filter(function(d, i) {
            return legendConfig.elements[i] && (legendConfig.elements[i].visibleInLegend || typeof legendConfig.elements[i].visibleInLegend === 'undefined');
        });
        if (legendConfig.reverseOrder) data = data.reverse();
        var container = legendConfig.container;
        if (typeof container == 'string' || container.nodeName) container = d3.select(container);
        var colors = data.map(function(d, i) {
            return d.color;
        });
        var lineHeight = legendConfig.fontSize;
        var isContinuous = legendConfig.isContinuous == null ? typeof data[0] === 'number' : legendConfig.isContinuous;
        var height = isContinuous ? legendConfig.height : lineHeight * data.length;
        var legendContainerGroup = container.classed('legend-group', true);
        var svg = legendContainerGroup.selectAll('svg').data([ 0 ]);
        var svgEnter = svg.enter().append('svg').attr({
            width: 300,
            height: height + lineHeight,
            xmlns: 'http://www.w3.org/2000/svg',
            'xmlns:xlink': 'http://www.w3.org/1999/xlink',
            version: '1.1'
        });
        svgEnter.append('g').classed('legend-axis', true);
        svgEnter.append('g').classed('legend-marks', true);
        var dataNumbered = d3.range(data.length);
        var colorScale = d3.scale[isContinuous ? 'linear' : 'ordinal']().domain(dataNumbered).range(colors);
        var dataScale = d3.scale[isContinuous ? 'linear' : 'ordinal']().domain(dataNumbered)[isContinuous ? 'range' : 'rangePoints']([ 0, height ]);
        var shapeGenerator = function(_type, _size) {
            var squareSize = _size * 3;
            if (_type === 'line') {
                return 'M' + [ [ -_size / 2, -_size / 12 ], [ _size / 2, -_size / 12 ], [ _size / 2, _size / 12 ], [ -_size / 2, _size / 12 ] ] + 'Z';
            } else if (d3.svg.symbolTypes.indexOf(_type) != -1) return d3.svg.symbol().type(_type).size(squareSize)(); else return d3.svg.symbol().type('square').size(squareSize)();
        };
        if (isContinuous) {
            var gradient = svg.select('.legend-marks').append('defs').append('linearGradient').attr({
                id: 'grad1',
                x1: '0%',
                y1: '0%',
                x2: '0%',
                y2: '100%'
            }).selectAll('stop').data(colors);
            gradient.enter().append('stop');
            gradient.attr({
                offset: function(d, i) {
                    return i / (colors.length - 1) * 100 + '%';
                }
            }).style({
                'stop-color': function(d, i) {
                    return d;
                }
            });
            svg.append('rect').classed('legend-mark', true).attr({
                height: legendConfig.height,
                width: legendConfig.colorBandWidth,
                fill: 'url(#grad1)'
            });
        } else {
            var legendElement = svg.select('.legend-marks').selectAll('path.legend-mark').data(data);
            legendElement.enter().append('path').classed('legend-mark', true);
            legendElement.attr({
                transform: function(d, i) {
                    return 'translate(' + [ lineHeight / 2, dataScale(i) + lineHeight / 2 ] + ')';
                },
                d: function(d, i) {
                    var symbolType = d.symbol;
                    return shapeGenerator(symbolType, lineHeight);
                },
                fill: function(d, i) {
                    return colorScale(i);
                }
            });
            legendElement.exit().remove();
        }
        var legendAxis = d3.svg.axis().scale(dataScale).orient('right');
        var axis = svg.select('g.legend-axis').attr({
            transform: 'translate(' + [ isContinuous ? legendConfig.colorBandWidth : lineHeight, lineHeight / 2 ] + ')'
        }).call(legendAxis);
        axis.selectAll('.domain').style({
            fill: 'none',
            stroke: 'none'
        });
        axis.selectAll('line').style({
            fill: 'none',
            stroke: isContinuous ? legendConfig.textColor : 'none'
        });
        axis.selectAll('text').style({
            fill: legendConfig.textColor,
            'font-size': legendConfig.fontSize
        }).text(function(d, i) {
            return data[i].name;
        });
        return exports;
    }
    exports.config = function(_x) {
        if (!arguments.length) return config;
        extendDeepAll(config, _x);
        return this;
    };
    d3.rebind(exports, dispatch, 'on');
    return exports;
};

µ.Legend.defaultConfig = function(d, i) {
    var config = {
        data: [ 'a', 'b', 'c' ],
        legendConfig: {
            elements: [ {
                symbol: 'line',
                color: 'red'
            }, {
                symbol: 'square',
                color: 'yellow'
            }, {
                symbol: 'diamond',
                color: 'limegreen'
            } ],
            height: 150,
            colorBandWidth: 30,
            fontSize: 12,
            container: 'body',
            isContinuous: null,
            textColor: 'grey',
            reverseOrder: false
        }
    };
    return config;
};

µ.tooltipPanel = function() {
    var tooltipEl, tooltipTextEl, backgroundEl;
    var config = {
        container: null,
        hasTick: false,
        fontSize: 12,
        color: 'white',
        padding: 5
    };
    var id = 'tooltip-' + µ.tooltipPanel.uid++;
    var tickSize = 10;
    var exports = function() {
        tooltipEl = config.container.selectAll('g.' + id).data([ 0 ]);
        var tooltipEnter = tooltipEl.enter().append('g').classed(id, true).style({
            'pointer-events': 'none',
            display: 'none'
        });
        backgroundEl = tooltipEnter.append('path').style({
            fill: 'white',
            'fill-opacity': .9
        }).attr({
            d: 'M0 0'
        });
        tooltipTextEl = tooltipEnter.append('text').attr({
            dx: config.padding + tickSize,
            dy: +config.fontSize * .3
        });
        return exports;
    };
    exports.text = function(_text) {
        var l = d3.hsl(config.color).l;
        var strokeColor = l >= .5 ? '#aaa' : 'white';
        var fillColor = l >= .5 ? 'black' : 'white';
        var text = _text || '';
        tooltipTextEl.style({
            fill: fillColor,
            'font-size': config.fontSize + 'px'
        }).text(text);
        var padding = config.padding;
        var bbox = tooltipTextEl.node().getBBox();
        var boxStyle = {
            fill: config.color,
            stroke: strokeColor,
            'stroke-width': '2px'
        };
        var backGroundW = bbox.width + padding * 2 + tickSize;
        var backGroundH = bbox.height + padding * 2;
        backgroundEl.attr({
            d: 'M' + [ [ tickSize, -backGroundH / 2 ], [ tickSize, -backGroundH / 4 ], [ config.hasTick ? 0 : tickSize, 0 ], [ tickSize, backGroundH / 4 ], [ tickSize, backGroundH / 2 ], [ backGroundW, backGroundH / 2 ], [ backGroundW, -backGroundH / 2 ] ].join('L') + 'Z'
        }).style(boxStyle);
        tooltipEl.attr({
            transform: 'translate(' + [ tickSize, -backGroundH / 2 + padding * 2 ] + ')'
        });
        tooltipEl.style({
            display: 'block'
        });
        return exports;
    };
    exports.move = function(_pos) {
        if (!tooltipEl) return;
        tooltipEl.attr({
            transform: 'translate(' + [ _pos[0], _pos[1] ] + ')'
        }).style({
            display: 'block'
        });
        return exports;
    };
    exports.hide = function() {
        if (!tooltipEl) return;
        tooltipEl.style({
            display: 'none'
        });
        return exports;
    };
    exports.show = function() {
        if (!tooltipEl) return;
        tooltipEl.style({
            display: 'block'
        });
        return exports;
    };
    exports.config = function(_x) {
        extendDeepAll(config, _x);
        return exports;
    };
    return exports;
};

µ.tooltipPanel.uid = 1;

µ.adapter = {};

µ.adapter.plotly = function module() {
    var exports = {};
    exports.convert = function(_inputConfig, reverse) {
        var outputConfig = {};
        if (_inputConfig.data) {
            outputConfig.data = _inputConfig.data.map(function(d, i) {
                var r = extendDeepAll({}, d);
                var toTranslate = [
                    [ r, [ 'marker', 'color' ], [ 'color' ] ],
                    [ r, [ 'marker', 'opacity' ], [ 'opacity' ] ],
                    [ r, [ 'marker', 'line', 'color' ], [ 'strokeColor' ] ],
                    [ r, [ 'marker', 'line', 'dash' ], [ 'strokeDash' ] ],
                    [ r, [ 'marker', 'line', 'width' ], [ 'strokeSize' ] ],
                    [ r, [ 'marker', 'symbol' ], [ 'dotType' ] ],
                    [ r, [ 'marker', 'size' ], [ 'dotSize' ] ],
                    [ r, [ 'marker', 'barWidth' ], [ 'barWidth' ] ],
                    [ r, [ 'line', 'interpolation' ], [ 'lineInterpolation' ] ],
                    [ r, [ 'showlegend' ], [ 'visibleInLegend' ] ]
                ];
                toTranslate.forEach(function(d, i) {
                    µ.util.translator.apply(null, d.concat(reverse));
                });

                if (!reverse) delete r.marker;
                if (reverse) delete r.groupId;
                if (!reverse) {
                    if (r.type === 'scatter') {
                        if (r.mode === 'lines') r.geometry = 'LinePlot'; else if (r.mode === 'markers') r.geometry = 'DotPlot'; else if (r.mode === 'lines+markers') {
                            r.geometry = 'LinePlot';
                            r.dotVisible = true;
                        }
                    } else if (r.type === 'area') r.geometry = 'AreaChart'; else if (r.type === 'bar') r.geometry = 'BarChart';
                    delete r.mode;
                    delete r.type;
                } else {
                    if (r.geometry === 'LinePlot') {
                        r.type = 'scatter';
                        if (r.dotVisible === true) {
                            delete r.dotVisible;
                            r.mode = 'lines+markers';
                        } else r.mode = 'lines';
                    } else if (r.geometry === 'DotPlot') {
                        r.type = 'scatter';
                        r.mode = 'markers';
                    } else if (r.geometry === 'AreaChart') r.type = 'area'; else if (r.geometry === 'BarChart') r.type = 'bar';
                    delete r.geometry;
                }
                return r;
            });
            if (!reverse && _inputConfig.layout && _inputConfig.layout.barmode === 'stack') {
                var duplicates = µ.util.duplicates(outputConfig.data.map(function(d, i) {
                    return d.geometry;
                }));
                outputConfig.data.forEach(function(d, i) {
                    var idx = duplicates.indexOf(d.geometry);
                    if (idx != -1) outputConfig.data[i].groupId = idx;
                });
            }
        }
        if (_inputConfig.layout) {
            var r = extendDeepAll({}, _inputConfig.layout);
            var toTranslate = [
                [ r, [ 'plot_bgcolor' ], [ 'backgroundColor' ] ],
                [ r, [ 'showlegend' ], [ 'showLegend' ] ],
                [ r, [ 'radialaxis' ], [ 'radialAxis' ] ],
                [ r, [ 'angularaxis' ], [ 'angularAxis' ] ],
                [ r.angularaxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.angularaxis, [ 'showticklabels' ], [ 'labelsVisible' ] ],
                [ r.angularaxis, [ 'nticks' ], [ 'ticksCount' ] ],
                [ r.angularaxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.angularaxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.angularaxis, [ 'range' ], [ 'domain' ] ],
                [ r.angularaxis, [ 'endpadding' ], [ 'endPadding' ] ],
                [ r.radialaxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.radialaxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.radialaxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.radialaxis, [ 'range' ], [ 'domain' ] ],
                [ r.angularAxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.angularAxis, [ 'showticklabels' ], [ 'labelsVisible' ] ],
                [ r.angularAxis, [ 'nticks' ], [ 'ticksCount' ] ],
                [ r.angularAxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.angularAxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.angularAxis, [ 'range' ], [ 'domain' ] ],
                [ r.angularAxis, [ 'endpadding' ], [ 'endPadding' ] ],
                [ r.radialAxis, [ 'showline' ], [ 'gridLinesVisible' ] ],
                [ r.radialAxis, [ 'tickorientation' ], [ 'tickOrientation' ] ],
                [ r.radialAxis, [ 'ticksuffix' ], [ 'ticksSuffix' ] ],
                [ r.radialAxis, [ 'range' ], [ 'domain' ] ],
                [ r.font, [ 'outlinecolor' ], [ 'outlineColor' ] ],
                [ r.legend, [ 'traceorder' ], [ 'reverseOrder' ] ],
                [ r, [ 'labeloffset' ], [ 'labelOffset' ] ],
                [ r, [ 'defaultcolorrange' ], [ 'defaultColorRange' ] ]
            ];
            toTranslate.forEach(function(d, i) {
                µ.util.translator.apply(null, d.concat(reverse));
            });

            if (!reverse) {
                if (r.angularAxis && typeof r.angularAxis.ticklen !== 'undefined') r.tickLength = r.angularAxis.ticklen;
                if (r.angularAxis && typeof r.angularAxis.tickcolor !== 'undefined') r.tickColor = r.angularAxis.tickcolor;
            } else {
                if (typeof r.tickLength !== 'undefined') {
                    r.angularaxis.ticklen = r.tickLength;
                    delete r.tickLength;
                }
                if (r.tickColor) {
                    r.angularaxis.tickcolor = r.tickColor;
                    delete r.tickColor;
                }
            }
            if (r.legend && typeof r.legend.reverseOrder != 'boolean') {
                r.legend.reverseOrder = r.legend.reverseOrder != 'normal';
            }
            if (r.legend && typeof r.legend.traceorder == 'boolean') {
                r.legend.traceorder = r.legend.traceorder ? 'reversed' : 'normal';
                delete r.legend.reverseOrder;
            }
            if (r.margin && typeof r.margin.t != 'undefined') {
                var source = [ 't', 'r', 'b', 'l', 'pad' ];
                var target = [ 'top', 'right', 'bottom', 'left', 'pad' ];
                var margin = {};
                d3.entries(r.margin).forEach(function(dB, iB) {
                    margin[target[source.indexOf(dB.key)]] = dB.value;
                });
                r.margin = margin;
            }
            if (reverse) {
                delete r.needsEndSpacing;
                delete r.minorTickColor;
                delete r.minorTicks;
                delete r.angularaxis.ticksCount;
                delete r.angularaxis.ticksCount;
                delete r.angularaxis.ticksStep;
                delete r.angularaxis.rewriteTicks;
                delete r.angularaxis.nticks;
                delete r.radialaxis.ticksCount;
                delete r.radialaxis.ticksCount;
                delete r.radialaxis.ticksStep;
                delete r.radialaxis.rewriteTicks;
                delete r.radialaxis.nticks;
            }
            outputConfig.layout = r;
        }
        return outputConfig;
    };
    return exports;
};

},{"../../lib":610,"d3":86}],707:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

/* eslint-disable new-cap */

'use strict';

var d3 = require('d3');
var Lib = require('../../lib');
var Color = require('../../components/color');

var micropolar = require('./micropolar');
var UndoManager = require('./undo_manager');
var extendDeepAll = Lib.extendDeepAll;

var manager = module.exports = {};

manager.framework = function(_gd) {
    var config, previousConfigClone, plot, convertedInput, container;
    var undoManager = new UndoManager();

    function exports(_inputConfig, _container) {
        if(_container) container = _container;
        d3.select(d3.select(container).node().parentNode).selectAll('.svg-container>*:not(.chart-root)').remove();

        config = (!config) ?
            _inputConfig :
            extendDeepAll(config, _inputConfig);

        if(!plot) plot = micropolar.Axis();
        convertedInput = micropolar.adapter.plotly().convert(config);
        plot.config(convertedInput).render(container);
        _gd.data = config.data;
        _gd.layout = config.layout;
        manager.fillLayout(_gd);
        return config;
    }
    exports.isPolar = true;
    exports.svg = function() { return plot.svg(); };
    exports.getConfig = function() { return config; };
    exports.getLiveConfig = function() {
        return micropolar.adapter.plotly().convert(plot.getLiveConfig(), true);
    };
    exports.getLiveScales = function() { return {t: plot.angularScale(), r: plot.radialScale()}; };
    exports.setUndoPoint = function() {
        var that = this;
        var configClone = micropolar.util.cloneJson(config);
        (function(_configClone, _previousConfigClone) {
            undoManager.add({
                undo: function() {
                    if(_previousConfigClone) that(_previousConfigClone);
                },
                redo: function() {
                    that(_configClone);
                }
            });
        })(configClone, previousConfigClone);
        previousConfigClone = micropolar.util.cloneJson(configClone);
    };
    exports.undo = function() { undoManager.undo(); };
    exports.redo = function() { undoManager.redo(); };
    return exports;
};

manager.fillLayout = function(_gd) {
    var container = d3.select(_gd).selectAll('.plot-container'),
        paperDiv = container.selectAll('.svg-container'),
        paper = _gd.framework && _gd.framework.svg && _gd.framework.svg(),
        dflts = {
            width: 800,
            height: 600,
            paper_bgcolor: Color.background,
            _container: container,
            _paperdiv: paperDiv,
            _paper: paper
        };

    _gd._fullLayout = extendDeepAll(dflts, _gd.layout);
};

},{"../../components/color":510,"../../lib":610,"./micropolar":706,"./undo_manager":708,"d3":86}],708:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// Modified from https://github.com/ArthurClemens/Javascript-Undo-Manager
// Copyright (c) 2010-2013 Arthur Clemens, arthur@visiblearea.com
module.exports = function UndoManager() {
    var undoCommands = [],
        index = -1,
        isExecuting = false,
        callback;

    function execute(command, action) {
        if(!command) return this;

        isExecuting = true;
        command[action]();
        isExecuting = false;

        return this;
    }

    return {
        add: function(command) {
            if(isExecuting) return this;
            undoCommands.splice(index + 1, undoCommands.length - index);
            undoCommands.push(command);
            index = undoCommands.length - 1;
            return this;
        },
        setCallback: function(callbackFunc) { callback = callbackFunc; },
        undo: function() {
            var command = undoCommands[index];
            if(!command) return this;
            execute(command, 'undo');
            index -= 1;
            if(callback) callback(command.undo);
            return this;
        },
        redo: function() {
            var command = undoCommands[index + 1];
            if(!command) return this;
            execute(command, 'redo');
            index += 1;
            if(callback) callback(command.redo);
            return this;
        },
        clear: function() {
            undoCommands = [];
            index = -1;
        },
        hasUndo: function() { return index !== -1; },
        hasRedo: function() { return index < (undoCommands.length - 1); },
        getCommands: function() { return undoCommands; },
        getPreviousCommand: function() { return undoCommands[index - 1]; },
        getIndex: function() { return index; }
    };
};

},{}],709:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../lib');
var Plots = require('./plots');


/**
 * Find and supply defaults to all subplots of a given type
 * This handles subplots that are contained within one container - so
 * gl3d, geo, ternary... but not 2d axes which have separate x and y axes
 * finds subplots, coerces their `domain` attributes, then calls the
 * given handleDefaults function to fill in everything else.
 *
 * layoutIn: the complete user-supplied input layout
 * layoutOut: the complete finished layout
 * fullData: the finished data array, used only to find subplots
 * opts: {
 *  type: subplot type string
 *  attributes: subplot attributes object
 *  partition: 'x' or 'y', which direction to divide domain space by default
 *      (default 'x', ie side-by-side subplots)
 *      TODO: this option is only here because 3D and geo made opposite
 *      choices in this regard previously and I didn't want to change it.
 *      Instead we should do:
 *      - something consistent
 *      - something more square (4 cuts 2x2, 5/6 cuts 2x3, etc.)
 *      - something that includes all subplot types in one arrangement,
 *        now that we can have them together!
 *  handleDefaults: function of (subplotLayoutIn, subplotLayoutOut, coerce, opts)
 *      this opts object is passed through to handleDefaults, so attach any
 *      additional items needed by this function here as well
 * }
 */
module.exports = function handleSubplotDefaults(layoutIn, layoutOut, fullData, opts) {
    var subplotType = opts.type,
        subplotAttributes = opts.attributes,
        handleDefaults = opts.handleDefaults,
        partition = opts.partition || 'x';

    var ids = Plots.findSubplotIds(fullData, subplotType),
        idsLength = ids.length;

    var subplotLayoutIn, subplotLayoutOut;

    function coerce(attr, dflt) {
        return Lib.coerce(subplotLayoutIn, subplotLayoutOut, subplotAttributes, attr, dflt);
    }

    for(var i = 0; i < idsLength; i++) {
        var id = ids[i];

        // ternary traces get a layout ternary for free!
        if(layoutIn[id]) subplotLayoutIn = layoutIn[id];
        else subplotLayoutIn = layoutIn[id] = {};

        layoutOut[id] = subplotLayoutOut = {};

        coerce('domain.' + partition, [i / idsLength, (i + 1) / idsLength]);
        coerce('domain.' + {x: 'y', y: 'x'}[partition]);

        opts.id = id;
        handleDefaults(subplotLayoutIn, subplotLayoutOut, coerce, opts);
    }
};

},{"../lib":610,"./plots":702}],710:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Ternary = require('./ternary');

var Plots = require('../../plots/plots');


exports.name = 'ternary';

exports.attr = 'subplot';

exports.idRoot = 'ternary';

exports.idRegex = /^ternary([2-9]|[1-9][0-9]+)?$/;

exports.attrRegex = /^ternary([2-9]|[1-9][0-9]+)?$/;

exports.attributes = require('./layout/attributes');

exports.layoutAttributes = require('./layout/layout_attributes');

exports.supplyLayoutDefaults = require('./layout/defaults');

exports.plot = function plotTernary(gd) {
    var fullLayout = gd._fullLayout,
        fullData = gd._fullData,
        ternaryIds = Plots.getSubplotIds(fullLayout, 'ternary');

    for(var i = 0; i < ternaryIds.length; i++) {
        var ternaryId = ternaryIds[i],
            fullTernaryData = Plots.getSubplotData(fullData, 'ternary', ternaryId),
            ternary = fullLayout[ternaryId]._subplot;

        // If ternary is not instantiated, create one!
        if(ternary === undefined) {
            ternary = new Ternary({
                id: ternaryId,
                graphDiv: gd,
                container: fullLayout._ternarylayer.node()
            },
                fullLayout
            );

            fullLayout[ternaryId]._subplot = ternary;
        }

        ternary.plot(fullTernaryData, fullLayout, gd._promises);
    }
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var oldTernaryKeys = Plots.getSubplotIds(oldFullLayout, 'ternary');

    for(var i = 0; i < oldTernaryKeys.length; i++) {
        var oldTernaryKey = oldTernaryKeys[i];
        var oldTernary = oldFullLayout[oldTernaryKey]._subplot;

        if(!newFullLayout[oldTernaryKey] && !!oldTernary) {
            oldTernary.plotContainer.remove();
            oldTernary.clipDef.remove();
        }
    }
};

},{"../../plots/plots":702,"./layout/attributes":711,"./layout/defaults":714,"./layout/layout_attributes":715,"./ternary":716}],711:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    subplot: {
        valType: 'subplotid',
        role: 'info',
        dflt: 'ternary',
        description: [
            'Sets a reference between this trace\'s data coordinates and',
            'a ternary subplot.',
            'If *ternary* (the default value), the data refer to `layout.ternary`.',
            'If *ternary2*, the data refer to `layout.ternary2`, and so on.'
        ].join(' ')
    }
};

},{}],712:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


var axesAttrs = require('../../cartesian/layout_attributes');
var extendFlat = require('../../../lib/extend').extendFlat;


module.exports = {
    title: axesAttrs.title,
    titlefont: axesAttrs.titlefont,
    color: axesAttrs.color,
    // ticks
    tickmode: axesAttrs.tickmode,
    nticks: extendFlat({}, axesAttrs.nticks, {dflt: 6, min: 1}),
    tick0: axesAttrs.tick0,
    dtick: axesAttrs.dtick,
    tickvals: axesAttrs.tickvals,
    ticktext: axesAttrs.ticktext,
    ticks: axesAttrs.ticks,
    ticklen: axesAttrs.ticklen,
    tickwidth: axesAttrs.tickwidth,
    tickcolor: axesAttrs.tickcolor,
    showticklabels: axesAttrs.showticklabels,
    showtickprefix: axesAttrs.showtickprefix,
    tickprefix: axesAttrs.tickprefix,
    showticksuffix: axesAttrs.showticksuffix,
    ticksuffix: axesAttrs.ticksuffix,
    showexponent: axesAttrs.showexponent,
    exponentformat: axesAttrs.exponentformat,
    separatethousands: axesAttrs.separatethousands,
    tickfont: axesAttrs.tickfont,
    tickangle: axesAttrs.tickangle,
    tickformat: axesAttrs.tickformat,
    hoverformat: axesAttrs.hoverformat,
    // lines and grids
    showline: extendFlat({}, axesAttrs.showline, {dflt: true}),
    linecolor: axesAttrs.linecolor,
    linewidth: axesAttrs.linewidth,
    showgrid: extendFlat({}, axesAttrs.showgrid, {dflt: true}),
    gridcolor: axesAttrs.gridcolor,
    gridwidth: axesAttrs.gridwidth,
    // range
    min: {
        valType: 'number',
        dflt: 0,
        role: 'info',
        min: 0,
        description: [
            'The minimum value visible on this axis.',
            'The maximum is determined by the sum minus the minimum',
            'values of the other two axes. The full view corresponds to',
            'all the minima set to zero.'
        ].join(' ')
    }
};

},{"../../../lib/extend":603,"../../cartesian/layout_attributes":651}],713:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';
var colorMix = require('tinycolor2').mix;

var Lib = require('../../../lib');

var layoutAttributes = require('./axis_attributes');
var handleTickLabelDefaults = require('../../cartesian/tick_label_defaults');
var handleTickMarkDefaults = require('../../cartesian/tick_mark_defaults');
var handleTickValueDefaults = require('../../cartesian/tick_value_defaults');


module.exports = function supplyLayoutDefaults(containerIn, containerOut, options) {

    function coerce(attr, dflt) {
        return Lib.coerce(containerIn, containerOut, layoutAttributes, attr, dflt);
    }

    containerOut.type = 'linear'; // no other types allowed for ternary

    var dfltColor = coerce('color');
    // if axis.color was provided, use it for fonts too; otherwise,
    // inherit from global font color in case that was provided.
    var dfltFontColor = (dfltColor === containerIn.color) ? dfltColor : options.font.color;

    var axName = containerOut._name,
        letterUpper = axName.charAt(0).toUpperCase(),
        dfltTitle = 'Component ' + letterUpper;

    var title = coerce('title', dfltTitle);
    containerOut._hovertitle = title === dfltTitle ? title : letterUpper;

    Lib.coerceFont(coerce, 'titlefont', {
        family: options.font.family,
        size: Math.round(options.font.size * 1.2),
        color: dfltFontColor
    });

    // range is just set by 'min' - max is determined by the other axes mins
    coerce('min');

    handleTickValueDefaults(containerIn, containerOut, coerce, 'linear');
    handleTickLabelDefaults(containerIn, containerOut, coerce, 'linear',
        { noHover: false });
    handleTickMarkDefaults(containerIn, containerOut, coerce,
        { outerTicks: true });

    var showTickLabels = coerce('showticklabels');
    if(showTickLabels) {
        Lib.coerceFont(coerce, 'tickfont', {
            family: options.font.family,
            size: options.font.size,
            color: dfltFontColor
        });
        coerce('tickangle');
        coerce('tickformat');
    }

    coerce('hoverformat');

    var showLine = coerce('showline');
    if(showLine) {
        coerce('linecolor', dfltColor);
        coerce('linewidth');
    }

    var showGridLines = coerce('showgrid');
    if(showGridLines) {
        // default grid color is darker here (60%, vs cartesian default ~91%)
        // because the grid is not square so the eye needs heavier cues to follow
        coerce('gridcolor', colorMix(dfltColor, options.bgColor, 60).toRgbString());
        coerce('gridwidth');
    }
};

},{"../../../lib":610,"../../cartesian/tick_label_defaults":657,"../../cartesian/tick_mark_defaults":658,"../../cartesian/tick_value_defaults":659,"./axis_attributes":712,"tinycolor2":985}],714:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../../components/color');

var handleSubplotDefaults = require('../../subplot_defaults');
var layoutAttributes = require('./layout_attributes');
var handleAxisDefaults = require('./axis_defaults');

var axesNames = ['aaxis', 'baxis', 'caxis'];

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    handleSubplotDefaults(layoutIn, layoutOut, fullData, {
        type: 'ternary',
        attributes: layoutAttributes,
        handleDefaults: handleTernaryDefaults,
        font: layoutOut.font,
        paper_bgcolor: layoutOut.paper_bgcolor
    });
};

function handleTernaryDefaults(ternaryLayoutIn, ternaryLayoutOut, coerce, options) {
    var bgColor = coerce('bgcolor');
    var sum = coerce('sum');
    options.bgColor = Color.combine(bgColor, options.paper_bgcolor);
    var axName, containerIn, containerOut;

    // TODO: allow most (if not all) axis attributes to be set
    // in the outer container and used as defaults in the individual axes?

    for(var j = 0; j < axesNames.length; j++) {
        axName = axesNames[j];
        containerIn = ternaryLayoutIn[axName] || {};
        containerOut = ternaryLayoutOut[axName] = {_name: axName};

        handleAxisDefaults(containerIn, containerOut, options);
    }

    // if the min values contradict each other, set them all to default (0)
    // and delete *all* the inputs so the user doesn't get confused later by
    // changing one and having them all change.
    var aaxis = ternaryLayoutOut.aaxis,
        baxis = ternaryLayoutOut.baxis,
        caxis = ternaryLayoutOut.caxis;
    if(aaxis.min + baxis.min + caxis.min >= sum) {
        aaxis.min = 0;
        baxis.min = 0;
        caxis.min = 0;
        if(ternaryLayoutIn.aaxis) delete ternaryLayoutIn.aaxis.min;
        if(ternaryLayoutIn.baxis) delete ternaryLayoutIn.baxis.min;
        if(ternaryLayoutIn.caxis) delete ternaryLayoutIn.caxis.min;
    }
}

},{"../../../components/color":510,"../../subplot_defaults":709,"./axis_defaults":713,"./layout_attributes":715}],715:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttrs = require('../../../components/color/attributes');
var ternaryAxesAttrs = require('./axis_attributes');


module.exports = {
    domain: {
        x: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the horizontal domain of this subplot',
                '(in plot fraction).'
            ].join(' ')
        },
        y: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the vertical domain of this subplot',
                '(in plot fraction).'
            ].join(' ')
        }
    },
    bgcolor: {
        valType: 'color',
        role: 'style',
        dflt: colorAttrs.background,
        description: 'Set the background color of the subplot'
    },
    sum: {
        valType: 'number',
        role: 'info',
        dflt: 1,
        min: 0,
        description: [
            'The number each triplet should sum to,',
            'and the maximum range of each axis'
        ].join(' ')
    },
    aaxis: ternaryAxesAttrs,
    baxis: ternaryAxesAttrs,
    caxis: ternaryAxesAttrs
};

},{"../../../components/color/attributes":509,"./axis_attributes":712}],716:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var tinycolor = require('tinycolor2');

var Plotly = require('../../plotly');
var Lib = require('../../lib');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var setConvert = require('../cartesian/set_convert');
var extendFlat = require('../../lib/extend').extendFlat;
var Axes = require('../cartesian/axes');
var dragElement = require('../../components/dragelement');
var Titles = require('../../components/titles');
var prepSelect = require('../cartesian/select');
var constants = require('../cartesian/constants');
var fx = require('../cartesian/graph_interact');


function Ternary(options, fullLayout) {
    this.id = options.id;
    this.graphDiv = options.graphDiv;
    this.init(fullLayout);
    this.makeFramework();
}

module.exports = Ternary;

var proto = Ternary.prototype;

proto.init = function(fullLayout) {
    this.container = fullLayout._ternarylayer;
    this.defs = fullLayout._defs;
    this.layoutId = fullLayout._uid;
    this.traceHash = {};
};

proto.plot = function(ternaryData, fullLayout) {
    var _this = this,
        ternaryLayout = fullLayout[_this.id],
        graphSize = fullLayout._size,
        i;

    if(Lib.getPlotDiv(_this.plotContainer.node()) !== _this.graphDiv) {
        // someone deleted the framework - remake it
        // TODO: this is getting deleted in (cartesian) makePlotFramework
        // turn that into idiomatic d3 (enter/exit, the piece I didn't know
        // before was ordering selections) so we don't need this.
        _this.init(_this.graphDiv._fullLayout);
        _this.makeFramework();
    }

    _this.adjustLayout(ternaryLayout, graphSize);

    var traceHashOld = _this.traceHash;
    var traceHash = {};

    for(i = 0; i < ternaryData.length; i++) {
        var trace = ternaryData[i];

        traceHash[trace.type] = traceHash[trace.type] || [];
        traceHash[trace.type].push(trace);
    }

    var moduleNamesOld = Object.keys(traceHashOld);
    var moduleNames = Object.keys(traceHash);

    // when a trace gets deleted, make sure that its module's
    // plot method is called so that it is properly
    // removed from the DOM.
    for(i = 0; i < moduleNamesOld.length; i++) {
        var moduleName = moduleNamesOld[i];

        if(moduleNames.indexOf(moduleName) === -1) {
            var fakeModule = traceHashOld[moduleName][0];
            fakeModule.visible = false;
            traceHash[moduleName] = [fakeModule];
        }
    }

    moduleNames = Object.keys(traceHash);

    for(i = 0; i < moduleNames.length; i++) {
        var moduleData = traceHash[moduleNames[i]];
        var _module = moduleData[0]._module;

        _module.plot(_this, Lib.filterVisible(moduleData), ternaryLayout);
    }

    _this.traceHash = traceHash;

    _this.layers.plotbg.select('path').call(Color.fill, ternaryLayout.bgcolor);
};

proto.makeFramework = function() {
    var _this = this;

    var defGroup = _this.defs.selectAll('g.clips')
        .data([0]);
    defGroup.enter().append('g')
        .classed('clips', true);

    // clippath for this ternary subplot
    var clipId = 'clip' + _this.layoutId + _this.id;
    _this.clipDef = defGroup.selectAll('#' + clipId)
        .data([0]);
    _this.clipDef.enter().append('clipPath').attr('id', clipId)
        .append('path').attr('d', 'M0,0Z');

    // container for everything in this ternary subplot
    _this.plotContainer = _this.container.selectAll('g.' + _this.id)
        .data([0]);
    _this.plotContainer.enter().append('g')
        .classed(_this.id, true);

    _this.layers = {};

    // inside that container, we have one container for the data, and
    // one each for the three axes around it.
    var plotLayers = [
        'draglayer',
        'plotbg',
        'backplot',
        'grids',
        'frontplot',
        'zoom',
        'aaxis', 'baxis', 'caxis', 'axlines'
    ];
    var toplevel = _this.plotContainer.selectAll('g.toplevel')
        .data(plotLayers);
    toplevel.enter().append('g')
        .attr('class', function(d) { return 'toplevel ' + d; })
        .each(function(d) {
            var s = d3.select(this);
            _this.layers[d] = s;

            // containers for different trace types.
            // NOTE - this is different from cartesian, where all traces
            // are in front of grids. Here I'm putting maps behind the grids
            // so the grids will always be visible if they're requested.
            // Perhaps we want that for cartesian too?
            if(d === 'frontplot') s.append('g').classed('scatterlayer', true);
            else if(d === 'backplot') s.append('g').classed('maplayer', true);
            else if(d === 'plotbg') s.append('path').attr('d', 'M0,0Z');
            else if(d === 'axlines') {
                s.selectAll('path').data(['aline', 'bline', 'cline'])
                    .enter().append('path').each(function(d) {
                        d3.select(this).classed(d, true);
                    });
            }
        });

    var grids = _this.plotContainer.select('.grids').selectAll('g.grid')
        .data(['agrid', 'bgrid', 'cgrid']);
    grids.enter().append('g')
        .attr('class', function(d) { return 'grid ' + d; })
        .each(function(d) { _this.layers[d] = d3.select(this); });

    _this.plotContainer.selectAll('.backplot,.frontplot,.grids')
        .call(Drawing.setClipUrl, clipId);

    if(!_this.graphDiv._context.staticPlot) {
        _this.initInteractions();
    }
};

var w_over_h = Math.sqrt(4 / 3);

proto.adjustLayout = function(ternaryLayout, graphSize) {
    var _this = this,
        domain = ternaryLayout.domain,
        xDomainCenter = (domain.x[0] + domain.x[1]) / 2,
        yDomainCenter = (domain.y[0] + domain.y[1]) / 2,
        xDomain = domain.x[1] - domain.x[0],
        yDomain = domain.y[1] - domain.y[0],
        wmax = xDomain * graphSize.w,
        hmax = yDomain * graphSize.h,
        sum = ternaryLayout.sum,
        amin = ternaryLayout.aaxis.min,
        bmin = ternaryLayout.baxis.min,
        cmin = ternaryLayout.caxis.min;

    var x0, y0, w, h, xDomainFinal, yDomainFinal;

    if(wmax > w_over_h * hmax) {
        h = hmax;
        w = h * w_over_h;
    }
    else {
        w = wmax;
        h = w / w_over_h;
    }

    xDomainFinal = xDomain * w / wmax;
    yDomainFinal = yDomain * h / hmax;

    x0 = graphSize.l + graphSize.w * xDomainCenter - w / 2;
    y0 = graphSize.t + graphSize.h * (1 - yDomainCenter) - h / 2;

    _this.x0 = x0;
    _this.y0 = y0;
    _this.w = w;
    _this.h = h;
    _this.sum = sum;

    // set up the x and y axis objects we'll use to lay out the points
    _this.xaxis = {
        type: 'linear',
        range: [amin + 2 * cmin - sum, sum - amin - 2 * bmin],
        domain: [
            xDomainCenter - xDomainFinal / 2,
            xDomainCenter + xDomainFinal / 2
        ],
        _id: 'x',
        _gd: _this.graphDiv
    };
    setConvert(_this.xaxis);
    _this.xaxis.setScale();

    _this.yaxis = {
        type: 'linear',
        range: [amin, sum - bmin - cmin],
        domain: [
            yDomainCenter - yDomainFinal / 2,
            yDomainCenter + yDomainFinal / 2
        ],
        _id: 'y',
        _gd: _this.graphDiv
    };
    setConvert(_this.yaxis);
    _this.yaxis.setScale();

    // set up the modified axes for tick drawing
    var yDomain0 = _this.yaxis.domain[0];

    // aaxis goes up the left side. Set it up as a y axis, but with
    // fictitious angles and domain, but then rotate and translate
    // it into place at the end
    var aaxis = _this.aaxis = extendFlat({}, ternaryLayout.aaxis, {
        range: [amin, sum - bmin - cmin],
        side: 'left',
        _counterangle: 30,
        // tickangle = 'auto' means 0 anyway for a y axis, need to coerce to 0 here
        // so we can shift by 30.
        tickangle: (+ternaryLayout.aaxis.tickangle || 0) - 30,
        domain: [yDomain0, yDomain0 + yDomainFinal * w_over_h],
        _axislayer: _this.layers.aaxis,
        _gridlayer: _this.layers.agrid,
        _pos: 0, // _this.xaxis.domain[0] * graphSize.w,
        _gd: _this.graphDiv,
        _id: 'y',
        _length: w,
        _gridpath: 'M0,0l' + h + ',-' + (w / 2)
    });
    setConvert(aaxis);

    // baxis goes across the bottom (backward). We can set it up as an x axis
    // without any enclosing transformation.
    var baxis = _this.baxis = extendFlat({}, ternaryLayout.baxis, {
        range: [sum - amin - cmin, bmin],
        side: 'bottom',
        _counterangle: 30,
        domain: _this.xaxis.domain,
        _axislayer: _this.layers.baxis,
        _gridlayer: _this.layers.bgrid,
        _counteraxis: _this.aaxis,
        _pos: 0, // (1 - yDomain0) * graphSize.h,
        _gd: _this.graphDiv,
        _id: 'x',
        _length: w,
        _gridpath: 'M0,0l-' + (w / 2) + ',-' + h
    });
    setConvert(baxis);
    aaxis._counteraxis = baxis;

    // caxis goes down the right side. Set it up as a y axis, with
    // post-transformation similar to aaxis
    var caxis = _this.caxis = extendFlat({}, ternaryLayout.caxis, {
        range: [sum - amin - bmin, cmin],
        side: 'right',
        _counterangle: 30,
        tickangle: (+ternaryLayout.caxis.tickangle || 0) + 30,
        domain: [yDomain0, yDomain0 + yDomainFinal * w_over_h],
        _axislayer: _this.layers.caxis,
        _gridlayer: _this.layers.cgrid,
        _counteraxis: _this.baxis,
        _pos: 0, // _this.xaxis.domain[1] * graphSize.w,
        _gd: _this.graphDiv,
        _id: 'y',
        _length: w,
        _gridpath: 'M0,0l-' + h + ',' + (w / 2)
    });
    setConvert(caxis);

    var triangleClip = 'M' + x0 + ',' + (y0 + h) + 'h' + w + 'l-' + (w / 2) + ',-' + h + 'Z';
    _this.clipDef.select('path').attr('d', triangleClip);
    _this.layers.plotbg.select('path').attr('d', triangleClip);

    var plotTransform = 'translate(' + x0 + ',' + y0 + ')';
    _this.plotContainer.selectAll('.scatterlayer,.maplayer,.zoom')
        .attr('transform', plotTransform);

    // TODO: shift axes to accommodate linewidth*sin(30) tick mark angle

    var bTransform = 'translate(' + x0 + ',' + (y0 + h) + ')';

    _this.layers.baxis.attr('transform', bTransform);
    _this.layers.bgrid.attr('transform', bTransform);

    var aTransform = 'translate(' + (x0 + w / 2) + ',' + y0 + ')rotate(30)';
    _this.layers.aaxis.attr('transform', aTransform);
    _this.layers.agrid.attr('transform', aTransform);

    var cTransform = 'translate(' + (x0 + w / 2) + ',' + y0 + ')rotate(-30)';
    _this.layers.caxis.attr('transform', cTransform);
    _this.layers.cgrid.attr('transform', cTransform);

    _this.drawAxes(true);

    // remove crispEdges - all the off-square angles in ternary plots
    // make these counterproductive.
    _this.plotContainer.selectAll('.crisp').classed('crisp', false);

    var axlines = _this.layers.axlines;
    axlines.select('.aline')
        .attr('d', aaxis.showline ?
            'M' + x0 + ',' + (y0 + h) + 'l' + (w / 2) + ',-' + h : 'M0,0')
        .call(Color.stroke, aaxis.linecolor || '#000')
        .style('stroke-width', (aaxis.linewidth || 0) + 'px');
    axlines.select('.bline')
        .attr('d', baxis.showline ?
            'M' + x0 + ',' + (y0 + h) + 'h' + w : 'M0,0')
        .call(Color.stroke, baxis.linecolor || '#000')
        .style('stroke-width', (baxis.linewidth || 0) + 'px');
    axlines.select('.cline')
        .attr('d', caxis.showline ?
            'M' + (x0 + w / 2) + ',' + y0 + 'l' + (w / 2) + ',' + h : 'M0,0')
        .call(Color.stroke, caxis.linecolor || '#000')
        .style('stroke-width', (caxis.linewidth || 0) + 'px');
};

proto.drawAxes = function(doTitles) {
    var _this = this,
        gd = _this.graphDiv,
        titlesuffix = _this.id.substr(7) + 'title',
        aaxis = _this.aaxis,
        baxis = _this.baxis,
        caxis = _this.caxis;
    // 3rd arg true below skips titles, so we can configure them
    // correctly later on.
    Axes.doTicks(gd, aaxis, true);
    Axes.doTicks(gd, baxis, true);
    Axes.doTicks(gd, caxis, true);

    if(doTitles) {
        var apad = Math.max(aaxis.showticklabels ? aaxis.tickfont.size / 2 : 0,
            (caxis.showticklabels ? caxis.tickfont.size * 0.75 : 0) +
            (caxis.ticks === 'outside' ? caxis.ticklen * 0.87 : 0));
        Titles.draw(gd, 'a' + titlesuffix, {
            propContainer: aaxis,
            propName: _this.id + '.aaxis.title',
            dfltName: 'Component A',
            attributes: {
                x: _this.x0 + _this.w / 2,
                y: _this.y0 - aaxis.titlefont.size / 3 - apad,
                'text-anchor': 'middle'
            }
        });

        var bpad = (baxis.showticklabels ? baxis.tickfont.size : 0) +
            (baxis.ticks === 'outside' ? baxis.ticklen : 0) + 3;

        Titles.draw(gd, 'b' + titlesuffix, {
            propContainer: baxis,
            propName: _this.id + '.baxis.title',
            dfltName: 'Component B',
            attributes: {
                x: _this.x0 - bpad,
                y: _this.y0 + _this.h + baxis.titlefont.size * 0.83 + bpad,
                'text-anchor': 'middle'
            }
        });

        Titles.draw(gd, 'c' + titlesuffix, {
            propContainer: caxis,
            propName: _this.id + '.caxis.title',
            dfltName: 'Component C',
            attributes: {
                x: _this.x0 + _this.w + bpad,
                y: _this.y0 + _this.h + caxis.titlefont.size * 0.83 + bpad,
                'text-anchor': 'middle'
            }
        });
    }
};

// hard coded paths for zoom corners
// uses the same sizing as cartesian, length is MINZOOM/2, width is 3px
var CLEN = constants.MINZOOM / 2 + 0.87;
var BLPATH = 'm-0.87,.5h' + CLEN + 'v3h-' + (CLEN + 5.2) +
    'l' + (CLEN / 2 + 2.6) + ',-' + (CLEN * 0.87 + 4.5) +
    'l2.6,1.5l-' + (CLEN / 2) + ',' + (CLEN * 0.87) + 'Z';
var BRPATH = 'm0.87,.5h-' + CLEN + 'v3h' + (CLEN + 5.2) +
    'l-' + (CLEN / 2 + 2.6) + ',-' + (CLEN * 0.87 + 4.5) +
    'l-2.6,1.5l' + (CLEN / 2) + ',' + (CLEN * 0.87) + 'Z';
var TOPPATH = 'm0,1l' + (CLEN / 2) + ',' + (CLEN * 0.87) +
    'l2.6,-1.5l-' + (CLEN / 2 + 2.6) + ',-' + (CLEN * 0.87 + 4.5) +
    'l-' + (CLEN / 2 + 2.6) + ',' + (CLEN * 0.87 + 4.5) +
    'l2.6,1.5l' + (CLEN / 2) + ',-' + (CLEN * 0.87) + 'Z';
var STARTMARKER = 'm0.5,0.5h5v-2h-5v-5h-2v5h-5v2h5v5h2Z';

// I guess this could be shared with cartesian... but for now it's separate.
var SHOWZOOMOUTTIP = true;

proto.initInteractions = function() {
    var _this = this,
        dragger = _this.layers.plotbg.select('path').node(),
        gd = _this.graphDiv,
        zoomContainer = _this.layers.zoom;

    // use plotbg for the main interactions
    var dragOptions = {
        element: dragger,
        gd: gd,
        plotinfo: {plot: zoomContainer},
        doubleclick: doubleClick,
        subplot: _this.id,
        prepFn: function(e, startX, startY) {
            // these aren't available yet when initInteractions
            // is called
            dragOptions.xaxes = [_this.xaxis];
            dragOptions.yaxes = [_this.yaxis];
            var dragModeNow = gd._fullLayout.dragmode;
            if(e.shiftKey) {
                if(dragModeNow === 'pan') dragModeNow = 'zoom';
                else dragModeNow = 'pan';
            }

            if(dragModeNow === 'lasso') dragOptions.minDrag = 1;
            else dragOptions.minDrag = undefined;

            if(dragModeNow === 'zoom') {
                dragOptions.moveFn = zoomMove;
                dragOptions.doneFn = zoomDone;
                zoomPrep(e, startX, startY);
            }
            else if(dragModeNow === 'pan') {
                dragOptions.moveFn = plotDrag;
                dragOptions.doneFn = dragDone;
                panPrep();
                clearSelect();
            }
            else if(dragModeNow === 'select' || dragModeNow === 'lasso') {
                prepSelect(e, startX, startY, dragOptions, dragModeNow);
            }
        }
    };

    var x0, y0, mins0, span0, mins, lum, path0, dimmed, zb, corners;

    function zoomPrep(e, startX, startY) {
        var dragBBox = dragger.getBoundingClientRect();
        x0 = startX - dragBBox.left;
        y0 = startY - dragBBox.top;
        mins0 = {
            a: _this.aaxis.range[0],
            b: _this.baxis.range[1],
            c: _this.caxis.range[1]
        };
        mins = mins0;
        span0 = _this.aaxis.range[1] - mins0.a;
        lum = tinycolor(_this.graphDiv._fullLayout[_this.id].bgcolor).getLuminance();
        path0 = 'M0,' + _this.h + 'L' + (_this.w / 2) + ', 0L' + _this.w + ',' + _this.h + 'Z';
        dimmed = false;

        zb = zoomContainer.append('path')
            .attr('class', 'zoombox')
            .style({
                'fill': lum > 0.2 ? 'rgba(0,0,0,0)' : 'rgba(255,255,255,0)',
                'stroke-width': 0
            })
            .attr('d', path0);

        corners = zoomContainer.append('path')
            .attr('class', 'zoombox-corners')
            .style({
                fill: Color.background,
                stroke: Color.defaultLine,
                'stroke-width': 1,
                opacity: 0
            })
            .attr('d', 'M0,0Z');

        clearSelect();
    }

    function getAFrac(x, y) { return 1 - (y / _this.h); }
    function getBFrac(x, y) { return 1 - ((x + (_this.h - y) / Math.sqrt(3)) / _this.w); }
    function getCFrac(x, y) { return ((x - (_this.h - y) / Math.sqrt(3)) / _this.w); }

    function zoomMove(dx0, dy0) {
        var x1 = x0 + dx0,
            y1 = y0 + dy0,
            afrac = Math.max(0, Math.min(1, getAFrac(x0, y0), getAFrac(x1, y1))),
            bfrac = Math.max(0, Math.min(1, getBFrac(x0, y0), getBFrac(x1, y1))),
            cfrac = Math.max(0, Math.min(1, getCFrac(x0, y0), getCFrac(x1, y1))),
            xLeft = ((afrac / 2) + cfrac) * _this.w,
            xRight = (1 - (afrac / 2) - bfrac) * _this.w,
            xCenter = (xLeft + xRight) / 2,
            xSpan = xRight - xLeft,
            yBottom = (1 - afrac) * _this.h,
            yTop = yBottom - xSpan / w_over_h;

        if(xSpan < constants.MINZOOM) {
            mins = mins0;
            zb.attr('d', path0);
            corners.attr('d', 'M0,0Z');
        }
        else {
            mins = {
                a: mins0.a + afrac * span0,
                b: mins0.b + bfrac * span0,
                c: mins0.c + cfrac * span0
            };
            zb.attr('d', path0 + 'M' + xLeft + ',' + yBottom +
                'H' + xRight + 'L' + xCenter + ',' + yTop +
                'L' + xLeft + ',' + yBottom + 'Z');
            corners.attr('d', 'M' + x0 + ',' + y0 + STARTMARKER +
                'M' + xLeft + ',' + yBottom + BLPATH +
                'M' + xRight + ',' + yBottom + BRPATH +
                'M' + xCenter + ',' + yTop + TOPPATH);
        }

        if(!dimmed) {
            zb.transition()
                .style('fill', lum > 0.2 ? 'rgba(0,0,0,0.4)' :
                    'rgba(255,255,255,0.3)')
                .duration(200);
            corners.transition()
                .style('opacity', 1)
                .duration(200);
            dimmed = true;
        }
    }

    function zoomDone(dragged, numClicks) {
        if(mins === mins0) {
            if(numClicks === 2) doubleClick();

            return removeZoombox(gd);
        }

        removeZoombox(gd);

        var attrs = {};
        attrs[_this.id + '.aaxis.min'] = mins.a;
        attrs[_this.id + '.baxis.min'] = mins.b;
        attrs[_this.id + '.caxis.min'] = mins.c;

        Plotly.relayout(gd, attrs);

        if(SHOWZOOMOUTTIP && gd.data && gd._context.showTips) {
            Lib.notifier('Double-click to<br>zoom back out', 'long');
            SHOWZOOMOUTTIP = false;
        }
    }

    function panPrep() {
        mins0 = {
            a: _this.aaxis.range[0],
            b: _this.baxis.range[1],
            c: _this.caxis.range[1]
        };
        mins = mins0;
    }

    function plotDrag(dx, dy) {
        var dxScaled = dx / _this.xaxis._m,
            dyScaled = dy / _this.yaxis._m;
        mins = {
            a: mins0.a - dyScaled,
            b: mins0.b + (dxScaled + dyScaled) / 2,
            c: mins0.c - (dxScaled - dyScaled) / 2
        };
        var minsorted = [mins.a, mins.b, mins.c].sort(),
            minindices = {
                a: minsorted.indexOf(mins.a),
                b: minsorted.indexOf(mins.b),
                c: minsorted.indexOf(mins.c)
            };
        if(minsorted[0] < 0) {
            if(minsorted[1] + minsorted[0] / 2 < 0) {
                minsorted[2] += minsorted[0] + minsorted[1];
                minsorted[0] = minsorted[1] = 0;
            }
            else {
                minsorted[2] += minsorted[0] / 2;
                minsorted[1] += minsorted[0] / 2;
                minsorted[0] = 0;
            }
            mins = {
                a: minsorted[minindices.a],
                b: minsorted[minindices.b],
                c: minsorted[minindices.c]
            };
            dy = (mins0.a - mins.a) * _this.yaxis._m;
            dx = (mins0.c - mins.c - mins0.b + mins.b) * _this.xaxis._m;
        }

        // move the data (translate, don't redraw)
        var plotTransform = 'translate(' + (_this.x0 + dx) + ',' + (_this.y0 + dy) + ')';
        _this.plotContainer.selectAll('.scatterlayer,.maplayer')
            .attr('transform', plotTransform);

        // move the ticks
        _this.aaxis.range = [mins.a, _this.sum - mins.b - mins.c];
        _this.baxis.range = [_this.sum - mins.a - mins.c, mins.b];
        _this.caxis.range = [_this.sum - mins.a - mins.b, mins.c];

        _this.drawAxes(false);
        _this.plotContainer.selectAll('.crisp').classed('crisp', false);
    }

    function dragDone(dragged, numClicks) {
        if(dragged) {
            var attrs = {};
            attrs[_this.id + '.aaxis.min'] = mins.a;
            attrs[_this.id + '.baxis.min'] = mins.b;
            attrs[_this.id + '.caxis.min'] = mins.c;

            Plotly.relayout(gd, attrs);
        }
        else if(numClicks === 2) doubleClick();
    }

    function clearSelect() {
        // until we get around to persistent selections, remove the outline
        // here. The selection itself will be removed when the plot redraws
        // at the end.
        _this.plotContainer.selectAll('.select-outline').remove();
    }

    function doubleClick() {
        var attrs = {};
        attrs[_this.id + '.aaxis.min'] = 0;
        attrs[_this.id + '.baxis.min'] = 0;
        attrs[_this.id + '.caxis.min'] = 0;
        gd.emit('plotly_doubleclick', null);
        Plotly.relayout(gd, attrs);
    }

    // finally, set up hover and click
    // these event handlers must already be set before dragElement.init
    // so it can stash them and override them.
    dragger.onmousemove = function(evt) {
        fx.hover(gd, evt, _this.id);
        gd._fullLayout._lasthover = dragger;
        gd._fullLayout._hoversubplot = _this.id;
    };

    dragger.onmouseout = function(evt) {
        if(gd._dragging) return;

        dragElement.unhover(gd, evt);
    };

    dragger.onclick = function(evt) {
        fx.click(gd, evt);
    };

    dragElement.init(dragOptions);
};

function removeZoombox(gd) {
    d3.select(gd)
        .selectAll('.zoombox,.js-zoombox-backdrop,.js-zoombox-menu,.zoombox-corners')
        .remove();
}

},{"../../components/color":510,"../../components/dragelement":531,"../../components/drawing":533,"../../components/titles":584,"../../lib":610,"../../lib/extend":603,"../../plotly":637,"../cartesian/axes":642,"../cartesian/constants":647,"../cartesian/graph_interact":649,"../cartesian/select":655,"../cartesian/set_convert":656,"d3":86,"tinycolor2":985}],717:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('./lib');
var basePlotAttributes = require('./plots/attributes');

exports.modules = {};
exports.allCategories = {};
exports.allTypes = [];
exports.subplotsRegistry = {};
exports.transformsRegistry = {};
exports.componentsRegistry = {};
exports.layoutArrayContainers = [];

/**
 * register a module as the handler for a trace type
 *
 * @param {object} _module the module that will handle plotting this trace type
 * @param {string} thisType
 * @param {array of strings} categoriesIn all the categories this type is in,
 *     tested by calls: traceIs(trace, oneCategory)
 * @param {object} meta meta information about the trace type
 */
exports.register = function(_module, thisType, categoriesIn, meta) {
    if(exports.modules[thisType]) {
        Lib.log('Type ' + thisType + ' already registered');
        return;
    }

    var categoryObj = {};
    for(var i = 0; i < categoriesIn.length; i++) {
        categoryObj[categoriesIn[i]] = true;
        exports.allCategories[categoriesIn[i]] = true;
    }

    exports.modules[thisType] = {
        _module: _module,
        categories: categoryObj
    };

    if(meta && Object.keys(meta).length) {
        exports.modules[thisType].meta = meta;
    }

    exports.allTypes.push(thisType);
};

/**
 * register a subplot type
 *
 * @param {object} _module subplot module:
 *
 *      @param {string or array of strings} attr
 *          attribute name in traces and layout
 *      @param {string or array of strings} idRoot
 *          root of id (setting the possible value for attrName)
 *      @param {object} attributes
 *          attribute(s) for traces of this subplot type
 *
 * In trace objects `attr` is the object key taking a valid `id` as value
 * (the set of all valid ids is generated below and stored in idRegex).
 *
 * In the layout object, a or several valid `attr` name(s) can be keys linked
 * to a nested attribute objects
 * (the set of all valid attr names is generated below and stored in attrRegex).
 */
exports.registerSubplot = function(_module) {
    var plotType = _module.name;

    if(exports.subplotsRegistry[plotType]) {
        Lib.log('Plot type ' + plotType + ' already registered.');
        return;
    }

    // not sure what's best for the 'cartesian' type at this point
    exports.subplotsRegistry[plotType] = _module;
};

exports.registerComponent = function(_module) {
    var name = _module.name;

    exports.componentsRegistry[name] = _module;

    if(_module.layoutAttributes && _module.layoutAttributes._isLinkedToArray) {
        Lib.pushUnique(exports.layoutArrayContainers, name);
    }
};

/**
 * Get registered module using trace object or trace type
 *
 * @param {object||string} trace
 *  trace object with prop 'type' or trace type as a string
 * @return {object}
 *  module object corresponding to trace type
 */
exports.getModule = function(trace) {
    if(trace.r !== undefined) {
        Lib.warn('Tried to put a polar trace ' +
            'on an incompatible graph of cartesian ' +
            'data. Ignoring this dataset.', trace
        );
        return false;
    }

    var _module = exports.modules[getTraceType(trace)];
    if(!_module) return false;
    return _module._module;
};

/**
 * Determine if this trace type is in a given category
 *
 * @param {object||string} traceType
 *  a trace (object) or trace type (string)
 * @param {string} category
 *  category in question
 * @return {boolean}
 */
exports.traceIs = function(traceType, category) {
    traceType = getTraceType(traceType);

    // old plot.ly workspace hack, nothing to see here
    if(traceType === 'various') return false;

    var _module = exports.modules[traceType];

    if(!_module) {
        if(traceType && traceType !== 'area') {
            Lib.log('Unrecognized trace type ' + traceType + '.');
        }

        _module = exports.modules[basePlotAttributes.type.dflt];
    }

    return !!_module.categories[category];
};

/**
 * Retrieve component module method
 *
 * @param {string} name
 *  name of component (as declared in component module)
 * @param {string} method
 *  name of component module method
 * @return {function}
 */
exports.getComponentMethod = function(name, method) {
    var _module = exports.componentsRegistry[name];

    if(!_module) return Lib.noop;
    return _module[method];
};

function getTraceType(traceType) {
    if(typeof traceType === 'object') traceType = traceType.type;
    return traceType;
}

},{"./lib":610,"./plots/attributes":640}],718:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../lib');
var Plots = require('../plots/plots');

var extendFlat = Lib.extendFlat;
var extendDeep = Lib.extendDeep;

// Put default plotTile layouts here
function cloneLayoutOverride(tileClass) {
    var override;

    switch(tileClass) {
        case 'themes__thumb':
            override = {
                autosize: true,
                width: 150,
                height: 150,
                title: '',
                showlegend: false,
                margin: {l: 5, r: 5, t: 5, b: 5, pad: 0},
                annotations: []
            };
            break;

        case 'thumbnail':
            override = {
                title: '',
                hidesources: true,
                showlegend: false,
                borderwidth: 0,
                bordercolor: '',
                margin: {l: 1, r: 1, t: 1, b: 1, pad: 0},
                annotations: []
            };
            break;

        default:
            override = {};
    }


    return override;
}

function keyIsAxis(keyName) {
    var types = ['xaxis', 'yaxis', 'zaxis'];
    return (types.indexOf(keyName.slice(0, 5)) > -1);
}


module.exports = function clonePlot(graphObj, options) {

    // Polar plot compatibility
    if(graphObj.framework && graphObj.framework.isPolar) {
        graphObj = graphObj.framework.getConfig();
    }

    var i;
    var oldData = graphObj.data;
    var oldLayout = graphObj.layout;
    var newData = extendDeep([], oldData);
    var newLayout = extendDeep({}, oldLayout, cloneLayoutOverride(options.tileClass));

    if(options.width) newLayout.width = options.width;
    if(options.height) newLayout.height = options.height;

    if(options.tileClass === 'thumbnail' || options.tileClass === 'themes__thumb') {
        // kill annotations
        newLayout.annotations = [];
        var keys = Object.keys(newLayout);

        for(i = 0; i < keys.length; i++) {
            if(keyIsAxis(keys[i])) {
                newLayout[keys[i]].title = '';
            }
        }

        // kill colorbar and pie labels
        for(i = 0; i < newData.length; i++) {
            var trace = newData[i];
            trace.showscale = false;
            if(trace.marker) trace.marker.showscale = false;
            if(trace.type === 'pie') trace.textposition = 'none';
        }
    }

    if(Array.isArray(options.annotations)) {
        for(i = 0; i < options.annotations.length; i++) {
            newLayout.annotations.push(options.annotations[i]);
        }
    }

    var sceneIds = Plots.getSubplotIds(newLayout, 'gl3d');

    if(sceneIds.length) {
        var axesImageOverride = {};
        if(options.tileClass === 'thumbnail') {
            axesImageOverride = {
                title: '',
                showaxeslabels: false,
                showticklabels: false,
                linetickenable: false
            };
        }
        for(i = 0; i < sceneIds.length; i++) {
            var sceneId = sceneIds[i];

            extendFlat(newLayout[sceneId].xaxis, axesImageOverride);
            extendFlat(newLayout[sceneId].yaxis, axesImageOverride);
            extendFlat(newLayout[sceneId].zaxis, axesImageOverride);

            // TODO what does this do?
            newLayout[sceneId]._scene = null;
        }
    }

    var gd = document.createElement('div');
    if(options.tileClass) gd.className = options.tileClass;

    var plotTile = {
        gd: gd,
        td: gd, // for external (image server) compatibility
        layout: newLayout,
        data: newData,
        config: {
            staticPlot: (options.staticPlot === undefined) ?
                true :
                options.staticPlot,
            plotGlPixelRatio: (options.plotGlPixelRatio === undefined) ?
                2 :
                options.plotGlPixelRatio,
            displaylogo: options.displaylogo || false,
            showLink: options.showLink || false,
            showTips: options.showTips || false
        }
    };

    if(options.setBackground !== 'transparent') {
        plotTile.config.setBackground = options.setBackground || 'opaque';
    }

    // attaching the default Layout the gd, so you can grab it later
    plotTile.gd.defaultLayout = cloneLayoutOverride(options.tileClass);

    return plotTile;
};

},{"../lib":610,"../plots/plots":702}],719:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var toImage = require('../plot_api/to_image');
var Lib = require('../lib'); // for isIE
var fileSaver = require('./filesaver');

/**
 * @param {object} gd figure Object
 * @param {object} opts option object
 * @param opts.format 'jpeg' | 'png' | 'webp' | 'svg'
 * @param opts.width width of snapshot in px
 * @param opts.height height of snapshot in px
 * @param opts.filename name of file excluding extension
 */
function downloadImage(gd, opts) {

    // check for undefined opts
    opts = opts || {};

    // default to png
    opts.format = opts.format || 'png';

    return new Promise(function(resolve, reject) {
        if(gd._snapshotInProgress) {
            reject(new Error('Snapshotting already in progress.'));
        }

        // see comments within svgtoimg for additional
        //   discussion of problems with IE
        //   can now draw to canvas, but CORS tainted canvas
        //   does not allow toDataURL
        //   svg format will work though
        if(Lib.isIE() && opts.format !== 'svg') {
            reject(new Error('Sorry IE does not support downloading from canvas. Try {format:\'svg\'} instead.'));
        }

        gd._snapshotInProgress = true;
        var promise = toImage(gd, opts);

        var filename = opts.filename || gd.fn || 'newplot';
        filename += '.' + opts.format;

        promise.then(function(result) {
            gd._snapshotInProgress = false;
            return fileSaver(result, filename);
        }).then(function(name) {
            resolve(name);
        }).catch(function(err) {
            gd._snapshotInProgress = false;
            reject(err);
        });
    });
}

module.exports = downloadImage;

},{"../lib":610,"../plot_api/to_image":635,"./filesaver":720}],720:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

/*
* substantial portions of this code from FileSaver.js
* https://github.com/eligrey/FileSaver.js
* License: https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
* FileSaver.js
* A saveAs() FileSaver implementation.
* 1.1.20160328
*
* By Eli Grey, http://eligrey.com
* License: MIT
*   See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
*/

'use strict';

var fileSaver = function(url, name) {
    var saveLink = document.createElement('a');
    var canUseSaveLink = 'download' in saveLink;
    var isSafari = /Version\/[\d\.]+.*Safari/.test(navigator.userAgent);
    var promise = new Promise(function(resolve, reject) {
        // IE <10 is explicitly unsupported
        if(typeof navigator !== 'undefined' && /MSIE [1-9]\./.test(navigator.userAgent)) {
            reject(new Error('IE < 10 unsupported'));
        }

        // First try a.download, then web filesystem, then object URLs
        if(isSafari) {
            // Safari doesn't allow downloading of blob urls
            document.location.href = 'data:application/octet-stream' + url.slice(url.search(/[,;]/));
            resolve(name);
        }

        if(!name) {
            name = 'download';
        }

        if(canUseSaveLink) {
            saveLink.href = url;
            saveLink.download = name;
            document.body.appendChild(saveLink);
            saveLink.click();
            document.body.removeChild(saveLink);
            resolve(name);
        }

        // IE 10+ (native saveAs)
        if(typeof navigator !== 'undefined' && navigator.msSaveBlob) {
            navigator.msSaveBlob(new Blob([url]), name);
            resolve(name);
        }

        reject(new Error('download error'));
    });

    return promise;
};

module.exports = fileSaver;

},{}],721:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

exports.getDelay = function(fullLayout) {

    // polar clears fullLayout._has for some reason
    if(!fullLayout._has) return 0;

    // maybe we should add a 'gl' (and 'svg') layoutCategory ??
    return (fullLayout._has('gl3d') || fullLayout._has('gl2d')) ? 500 : 0;
};

exports.getRedrawFunc = function(gd) {

    // do not work if polar is present
    if((gd.data && gd.data[0] && gd.data[0].r)) return;

    return function() {
        (gd.calcdata || []).forEach(function(d) {
            if(d[0] && d[0].t && d[0].t.cb) d[0].t.cb();
        });
    };
};

},{}],722:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var helpers = require('./helpers');

var Snapshot = {
    getDelay: helpers.getDelay,
    getRedrawFunc: helpers.getRedrawFunc,
    clone: require('./cloneplot'),
    toSVG: require('./tosvg'),
    svgToImg: require('./svgtoimg'),
    toImage: require('./toimage'),
    downloadImage: require('./download')
};

module.exports = Snapshot;

},{"./cloneplot":718,"./download":719,"./helpers":721,"./svgtoimg":723,"./toimage":724,"./tosvg":725}],723:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');
var EventEmitter = require('events').EventEmitter;

function svgToImg(opts) {

    var ev = opts.emitter || new EventEmitter();

    var promise = new Promise(function(resolve, reject) {

        var Image = window.Image;

        var svg = opts.svg;
        var format = opts.format || 'png';

        // IE is very strict, so we will need to clean
        //  svg with the following regex
        //  yes this is messy, but do not know a better way
        // Even with this IE will not work due to tainted canvas
        //  see https://github.com/kangax/fabric.js/issues/1957
        //      http://stackoverflow.com/questions/18112047/canvas-todataurl-working-in-all-browsers-except-ie10
        // Leave here just in case the CORS/tainted IE issue gets resolved
        if(Lib.isIE()) {
            // replace double quote with single quote
            svg = svg.replace(/"/gi, '\'');
            // url in svg are single quoted
            //   since we changed double to single
            //   we'll need to change these to double-quoted
            svg = svg.replace(/(\('#)(.*)('\))/gi, '(\"$2\")');
            // font names with spaces will be escaped single-quoted
            //   we'll need to change these to double-quoted
            svg = svg.replace(/(\\')/gi, '\"');
            // IE only support svg
            if(format !== 'svg') {
                var ieSvgError = new Error('Sorry IE does not support downloading from canvas. Try {format:\'svg\'} instead.');
                reject(ieSvgError);
                // eventually remove the ev
                //  in favor of promises
                if(!opts.promise) {
                    return ev.emit('error', ieSvgError);
                } else {
                    return promise;
                }
            }
        }

        var canvas = opts.canvas;

        var ctx = canvas.getContext('2d');
        var img = new Image();

        // for Safari support, eliminate createObjectURL
        //  this decision could cause problems if content
        //  is not restricted to svg
        var url = 'data:image/svg+xml,' + encodeURIComponent(svg);

        canvas.height = opts.height || 150;
        canvas.width = opts.width || 300;

        img.onload = function() {
            var imgData;

            // don't need to draw to canvas if svg
            //  save some time and also avoid failure on IE
            if(format !== 'svg') {
                ctx.drawImage(img, 0, 0);
            }

            switch(format) {
                case 'jpeg':
                    imgData = canvas.toDataURL('image/jpeg');
                    break;
                case 'png':
                    imgData = canvas.toDataURL('image/png');
                    break;
                case 'webp':
                    imgData = canvas.toDataURL('image/webp');
                    break;
                case 'svg':
                    imgData = url;
                    break;
                default:
                    reject(new Error('Image format is not jpeg, png or svg'));
                    // eventually remove the ev
                    //  in favor of promises
                    if(!opts.promise) {
                        return ev.emit('error', 'Image format is not jpeg, png or svg');
                    }
            }
            resolve(imgData);
            // eventually remove the ev
            //  in favor of promises
            if(!opts.promise) {
                ev.emit('success', imgData);
            }
        };

        img.onerror = function(err) {
            reject(err);
            // eventually remove the ev
            //  in favor of promises
            if(!opts.promise) {
                return ev.emit('error', err);
            }
        };

        img.src = url;
    });

    // temporary for backward compatibility
    //  move to only Promise in 2.0.0
    //  and eliminate the EventEmitter
    if(opts.promise) {
        return promise;
    }

    return ev;
}

module.exports = svgToImg;

},{"../lib":610,"events":95}],724:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var EventEmitter = require('events').EventEmitter;

var Plotly = require('../plotly');
var Lib = require('../lib');

var helpers = require('./helpers');
var clonePlot = require('./cloneplot');
var toSVG = require('./tosvg');
var svgToImg = require('./svgtoimg');


/**
 * @param {object} gd figure Object
 * @param {object} opts option object
 * @param opts.format 'jpeg' | 'png' | 'webp' | 'svg'
 */
function toImage(gd, opts) {

    // first clone the GD so we can operate in a clean environment
    var ev = new EventEmitter();

    var clone = clonePlot(gd, {format: 'png'});
    var clonedGd = clone.gd;

    // put the cloned div somewhere off screen before attaching to DOM
    clonedGd.style.position = 'absolute';
    clonedGd.style.left = '-5000px';
    document.body.appendChild(clonedGd);

    function wait() {
        var delay = helpers.getDelay(clonedGd._fullLayout);

        setTimeout(function() {
            var svg = toSVG(clonedGd);

            var canvas = document.createElement('canvas');
            canvas.id = Lib.randstr();

            ev = svgToImg({
                format: opts.format,
                width: clonedGd._fullLayout.width,
                height: clonedGd._fullLayout.height,
                canvas: canvas,
                emitter: ev,
                svg: svg
            });

            ev.clean = function() {
                if(clonedGd) document.body.removeChild(clonedGd);
            };

        }, delay);
    }

    var redrawFunc = helpers.getRedrawFunc(clonedGd);

    Plotly.plot(clonedGd, clone.data, clone.layout, clone.config)
        .then(redrawFunc)
        .then(wait)
        .catch(function(err) {
            ev.emit('error', err);
        });


    return ev;
}

module.exports = toImage;

},{"../lib":610,"../plotly":637,"./cloneplot":718,"./helpers":721,"./svgtoimg":723,"./tosvg":725,"events":95}],725:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var svgTextUtils = require('../lib/svg_text_utils');
var Drawing = require('../components/drawing');
var Color = require('../components/color');

var xmlnsNamespaces = require('../constants/xmlns_namespaces');


module.exports = function toSVG(gd, format) {
    var fullLayout = gd._fullLayout,
        svg = fullLayout._paper,
        toppaper = fullLayout._toppaper,
        i;

    // make background color a rect in the svg, then revert after scraping
    // all other alterations have been dealt with by properly preparing the svg
    // in the first place... like setting cursors with css classes so we don't
    // have to remove them, and providing the right namespaces in the svg to
    // begin with
    svg.insert('rect', ':first-child')
        .call(Drawing.setRect, 0, 0, fullLayout.width, fullLayout.height)
        .call(Color.fill, fullLayout.paper_bgcolor);

    // subplot-specific to-SVG methods
    // which notably add the contents of the gl-container
    // into the main svg node
    var basePlotModules = fullLayout._basePlotModules || [];
    for(i = 0; i < basePlotModules.length; i++) {
        var _module = basePlotModules[i];

        if(_module.toSVG) _module.toSVG(gd);
    }

    // add top items above them assumes everything in toppaper is either
    // a group or a defs, and if it's empty (like hoverlayer) we can ignore it.
    if(toppaper) {
        var nodes = toppaper.node().childNodes;

        // make copy of nodes as childNodes prop gets mutated in loop below
        var topGroups = Array.prototype.slice.call(nodes);

        for(i = 0; i < topGroups.length; i++) {
            var topGroup = topGroups[i];

            if(topGroup.childNodes.length) svg.node().appendChild(topGroup);
        }
    }

    // remove draglayer for Adobe Illustrator compatibility
    if(fullLayout._draggers) {
        fullLayout._draggers.remove();
    }

    // in case the svg element had an explicit background color, remove this
    // we want the rect to get the color so it's the right size; svg bg will
    // fill whatever container it's displayed in regardless of plot size.
    svg.node().style.background = '';

    svg.selectAll('text')
        .attr('data-unformatted', null)
        .each(function() {
            var txt = d3.select(this);

            // hidden text is pre-formatting mathjax,
            // the browser ignores it but it can still confuse batik
            if(txt.style('visibility') === 'hidden') {
                txt.remove();
                return;
            }
            else {
                // force other visibility value to export as visible
                // to not potentially confuse non-browser SVG implementations
                txt.style('visibility', 'visible');
            }

            // Font family styles break things because of quotation marks,
            // so we must remove them *after* the SVG DOM has been serialized
            // to a string (browsers convert singles back)
            var ff = txt.style('font-family');
            if(ff && ff.indexOf('"') !== -1) {
                txt.style('font-family', ff.replace(/"/g, 'TOBESTRIPPED'));
            }
        });

    if(format === 'pdf' || format === 'eps') {
        // these formats make the extra line MathJax adds around symbols look super thick in some cases
        // it looks better if this is removed entirely.
        svg.selectAll('#MathJax_SVG_glyphs path')
            .attr('stroke-width', 0);
    }

    // fix for IE namespacing quirk?
    // http://stackoverflow.com/questions/19610089/unwanted-namespaces-on-svg-markup-when-using-xmlserializer-in-javascript-with-ie
    svg.node().setAttributeNS(xmlnsNamespaces.xmlns, 'xmlns', xmlnsNamespaces.svg);
    svg.node().setAttributeNS(xmlnsNamespaces.xmlns, 'xmlns:xlink', xmlnsNamespaces.xlink);

    var s = new window.XMLSerializer().serializeToString(svg.node());
    s = svgTextUtils.html_entity_decode(s);
    s = svgTextUtils.xml_entity_encode(s);

    // Fix quotations around font strings
    s = s.replace(/("TOBESTRIPPED)|(TOBESTRIPPED")/g, '\'');

    return s;
};

},{"../components/color":510,"../components/drawing":533,"../constants/xmlns_namespaces":595,"../lib/svg_text_utils":625,"d3":86}],726:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var mergeArray = require('../../lib').mergeArray;


// arrayOk attributes, merge them into calcdata array
module.exports = function arraysToCalcdata(cd, trace) {
    mergeArray(trace.text, cd, 'tx');

    var marker = trace.marker;
    if(marker) {
        mergeArray(marker.opacity, cd, 'mo');
        mergeArray(marker.color, cd, 'mc');

        var markerLine = marker.line;
        if(markerLine) {
            mergeArray(markerLine.color, cd, 'mlc');
            mergeArray(markerLine.width, cd, 'mlw');
        }
    }
};

},{"../../lib":610}],727:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorAttributes = require('../../components/colorscale/color_attributes');
var errorBarAttrs = require('../../components/errorbars/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var fontAttrs = require('../../plots/font_attributes');

var extendFlat = require('../../lib/extend').extendFlat;
var extendDeep = require('../../lib/extend').extendDeep;

var textFontAttrs = extendDeep({}, fontAttrs);
textFontAttrs.family.arrayOk = true;
textFontAttrs.size.arrayOk = true;
textFontAttrs.color.arrayOk = true;

var scatterMarkerAttrs = scatterAttrs.marker;
var scatterMarkerLineAttrs = scatterMarkerAttrs.line;

var markerLineWidth = extendFlat({},
    scatterMarkerLineAttrs.width, { dflt: 0 });

var markerLine = extendFlat({}, {
    width: markerLineWidth
}, colorAttributes('marker.line'));

var marker = extendFlat({}, {
    line: markerLine
}, colorAttributes('marker'), {
    showscale: scatterMarkerAttrs.showscale,
    colorbar: colorbarAttrs
});


module.exports = {
    x: scatterAttrs.x,
    x0: scatterAttrs.x0,
    dx: scatterAttrs.dx,
    y: scatterAttrs.y,
    y0: scatterAttrs.y0,
    dy: scatterAttrs.dy,

    text: scatterAttrs.text,

    textposition: {
        valType: 'enumerated',
        role: 'info',
        values: ['inside', 'outside', 'auto', 'none'],
        dflt: 'none',
        arrayOk: true,
        description: [
            'Specifies the location of the `text`.',
            '*inside* positions `text` inside, next to the bar end',
            '(rotated and scaled if needed).',
            '*outside* positions `text` outside, next to the bar end',
            '(scaled if needed).',
            '*auto* positions `text` inside or outside',
            'so that `text` size is maximized.'
        ].join(' ')
    },

    textfont: extendFlat({}, textFontAttrs, {
        description: 'Sets the font used for `text`.'
    }),

    insidetextfont: extendFlat({}, textFontAttrs, {
        description: 'Sets the font used for `text` lying inside the bar.'
    }),

    outsidetextfont: extendFlat({}, textFontAttrs, {
        description: 'Sets the font used for `text` lying outside the bar.'
    }),

    orientation: {
        valType: 'enumerated',
        role: 'info',
        values: ['v', 'h'],
        description: [
            'Sets the orientation of the bars.',
            'With *v* (*h*), the value of the each bar spans',
            'along the vertical (horizontal).'
        ].join(' ')
    },

    base: {
        valType: 'any',
        dflt: null,
        arrayOk: true,
        role: 'info',
        description: [
            'Sets where the bar base is drawn (in position axis units).',
            'In *stack* or *relative* barmode,',
            'traces that set *base* will be excluded',
            'and drawn in *overlay* mode instead.'
        ].join(' ')
    },

    offset: {
        valType: 'number',
        dflt: null,
        arrayOk: true,
        role: 'info',
        description: [
            'Shifts the position where the bar is drawn',
            '(in position axis units).',
            'In *group* barmode,',
            'traces that set *offset* will be excluded',
            'and drawn in *overlay* mode instead.'
        ].join(' ')
    },

    width: {
        valType: 'number',
        dflt: null,
        min: 0,
        arrayOk: true,
        role: 'info',
        description: [
            'Sets the bar width (in position axis units).'
        ].join(' ')
    },

    marker: marker,

    r: scatterAttrs.r,
    t: scatterAttrs.t,

    error_y: errorBarAttrs,
    error_x: errorBarAttrs,

    _deprecated: {
        bardir: {
            valType: 'enumerated',
            role: 'info',
            values: ['v', 'h'],
            description: 'Renamed to `orientation`.'
        }
    }
};

},{"../../components/colorbar/attributes":511,"../../components/colorscale/color_attributes":517,"../../components/errorbars/attributes":535,"../../lib/extend":603,"../../plots/font_attributes":662,"../scatter/attributes":834}],728:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Axes = require('../../plots/cartesian/axes');
var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleCalc = require('../../components/colorscale/calc');

var arraysToCalcdata = require('./arrays_to_calcdata');


module.exports = function calc(gd, trace) {
    // depending on bar direction, set position and size axes
    // and data ranges
    // note: this logic for choosing orientation is
    // duplicated in graph_obj->setstyles

    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        ya = Axes.getFromId(gd, trace.yaxis || 'y'),
        orientation = trace.orientation || ((trace.x && !trace.y) ? 'h' : 'v'),
        sa, pos, size, i, scalendar;

    if(orientation === 'h') {
        sa = xa;
        size = xa.makeCalcdata(trace, 'x');
        pos = ya.makeCalcdata(trace, 'y');

        // not sure if it really makes sense to have dates for bar size data...
        // ideally if we want to make gantt charts or something we'd treat
        // the actual size (trace.x or y) as time delta but base as absolute
        // time. But included here for completeness.
        scalendar = trace.xcalendar;
    }
    else {
        sa = ya;
        size = ya.makeCalcdata(trace, 'y');
        pos = xa.makeCalcdata(trace, 'x');
        scalendar = trace.ycalendar;
    }

    // create the "calculated data" to plot
    var serieslen = Math.min(pos.length, size.length),
        cd = [];

    // set position
    for(i = 0; i < serieslen; i++) {

        // add bars with non-numeric sizes to calcdata
        // so that ensure that traces with gaps are
        // plotted in the correct order

        if(isNumeric(pos[i])) {
            cd.push({p: pos[i]});
        }
    }

    // set base
    var base = trace.base,
        b;

    if(Array.isArray(base)) {
        for(i = 0; i < Math.min(base.length, cd.length); i++) {
            b = sa.d2c(base[i], 0, scalendar);
            cd[i].b = (isNumeric(b)) ? b : 0;
        }
        for(; i < cd.length; i++) {
            cd[i].b = 0;
        }
    }
    else {
        b = sa.d2c(base, 0, scalendar);
        b = (isNumeric(b)) ? b : 0;
        for(i = 0; i < cd.length; i++) {
            cd[i].b = b;
        }
    }

    // set size
    for(i = 0; i < cd.length; i++) {
        if(isNumeric(size[i])) {
            cd[i].s = size[i];
        }
    }

    // auto-z and autocolorscale if applicable
    if(hasColorscale(trace, 'marker')) {
        colorscaleCalc(trace, trace.marker.color, 'marker', 'c');
    }
    if(hasColorscale(trace, 'marker.line')) {
        colorscaleCalc(trace, trace.marker.line.color, 'marker.line', 'c');
    }

    arraysToCalcdata(cd, trace);

    return cd;
};

},{"../../components/colorscale/calc":516,"../../components/colorscale/has_colorscale":523,"../../plots/cartesian/axes":642,"./arrays_to_calcdata":726,"fast-isnumeric":97}],729:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Color = require('../../components/color');

var handleXYDefaults = require('../scatter/xy_defaults');
var handleStyleDefaults = require('../bar/style_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var coerceFont = Lib.coerceFont;

    var len = handleXYDefaults(traceIn, traceOut, layout, coerce);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('orientation', (traceOut.x && !traceOut.y) ? 'h' : 'v');
    coerce('base');
    coerce('offset');
    coerce('width');

    coerce('text');

    var textPosition = coerce('textposition');

    var hasBoth = Array.isArray(textPosition) || textPosition === 'auto',
        hasInside = hasBoth || textPosition === 'inside',
        hasOutside = hasBoth || textPosition === 'outside';
    if(hasInside || hasOutside) {
        var textFont = coerceFont(coerce, 'textfont', layout.font);
        if(hasInside) coerceFont(coerce, 'insidetextfont', textFont);
        if(hasOutside) coerceFont(coerce, 'outsidetextfont', textFont);
    }

    handleStyleDefaults(traceIn, traceOut, coerce, defaultColor, layout);

    // override defaultColor for error bars with defaultLine
    errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'y'});
    errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'x', inherit: 'y'});
};

},{"../../components/color":510,"../../components/errorbars/defaults":538,"../../lib":610,"../bar/style_defaults":738,"../scatter/xy_defaults":856,"./attributes":727}],730:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Fx = require('../../plots/cartesian/graph_interact');
var ErrorBars = require('../../components/errorbars');
var Color = require('../../components/color');


module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
    var cd = pointData.cd,
        trace = cd[0].trace,
        t = cd[0].t,
        xa = pointData.xa,
        ya = pointData.ya,
        barDelta = (hovermode === 'closest') ?
            t.barwidth / 2 :
            t.bargroupwidth / 2,
        barPos;

    if(hovermode !== 'closest') barPos = function(di) { return di.p; };
    else if(trace.orientation === 'h') barPos = function(di) { return di.y; };
    else barPos = function(di) { return di.x; };

    var dx, dy;
    if(trace.orientation === 'h') {
        dx = function(di) {
            // add a gradient so hovering near the end of a
            // bar makes it a little closer match
            return Fx.inbox(di.b - xval, di.x - xval) + (di.x - xval) / (di.x - di.b);
        };
        dy = function(di) {
            var centerPos = barPos(di) - yval;
            return Fx.inbox(centerPos - barDelta, centerPos + barDelta);
        };
    }
    else {
        dy = function(di) {
            return Fx.inbox(di.b - yval, di.y - yval) + (di.y - yval) / (di.y - di.b);
        };
        dx = function(di) {
            var centerPos = barPos(di) - xval;
            return Fx.inbox(centerPos - barDelta, centerPos + barDelta);
        };
    }

    var distfn = Fx.getDistanceFunction(hovermode, dx, dy);
    Fx.getClosest(cd, distfn, pointData);

    // skip the rest (for this trace) if we didn't find a close point
    if(pointData.index === false) return;

    // the closest data point
    var di = cd[pointData.index],
        mc = di.mcc || trace.marker.color,
        mlc = di.mlcc || trace.marker.line.color,
        mlw = di.mlw || trace.marker.line.width;
    if(Color.opacity(mc)) pointData.color = mc;
    else if(Color.opacity(mlc) && mlw) pointData.color = mlc;

    var size = (trace.base) ? di.b + di.s : di.s;
    if(trace.orientation === 'h') {
        pointData.x0 = pointData.x1 = xa.c2p(di.x, true);
        pointData.xLabelVal = size;

        pointData.y0 = ya.c2p(barPos(di) - barDelta, true);
        pointData.y1 = ya.c2p(barPos(di) + barDelta, true);
        pointData.yLabelVal = di.p;
    }
    else {
        pointData.y0 = pointData.y1 = ya.c2p(di.y, true);
        pointData.yLabelVal = size;

        pointData.x0 = xa.c2p(barPos(di) - barDelta, true);
        pointData.x1 = xa.c2p(barPos(di) + barDelta, true);
        pointData.xLabelVal = di.p;
    }

    if(di.tx) pointData.text = di.tx;

    ErrorBars.hoverInfo(di, trace, pointData);

    return [pointData];
};

},{"../../components/color":510,"../../components/errorbars":539,"../../plots/cartesian/graph_interact":649}],731:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Bar = {};

Bar.attributes = require('./attributes');
Bar.layoutAttributes = require('./layout_attributes');
Bar.supplyDefaults = require('./defaults');
Bar.supplyLayoutDefaults = require('./layout_defaults');
Bar.calc = require('./calc');
Bar.setPositions = require('./set_positions');
Bar.colorbar = require('../scatter/colorbar');
Bar.arraysToCalcdata = require('./arrays_to_calcdata');
Bar.plot = require('./plot');
Bar.style = require('./style');
Bar.hoverPoints = require('./hover');

Bar.moduleType = 'trace';
Bar.name = 'bar';
Bar.basePlotModule = require('../../plots/cartesian');
Bar.categories = ['cartesian', 'bar', 'oriented', 'markerColorscale', 'errorBarsOK', 'showLegend'];
Bar.meta = {
    description: [
        'The data visualized by the span of the bars is set in `y`',
        'if `orientation` is set th *v* (the default)',
        'and the labels are set in `x`.',
        'By setting `orientation` to *h*, the roles are interchanged.'
    ].join(' ')
};

module.exports = Bar;

},{"../../plots/cartesian":650,"../scatter/colorbar":837,"./arrays_to_calcdata":726,"./attributes":727,"./calc":728,"./defaults":729,"./hover":730,"./layout_attributes":732,"./layout_defaults":733,"./plot":734,"./set_positions":735,"./style":737}],732:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    barmode: {
        valType: 'enumerated',
        values: ['stack', 'group', 'overlay', 'relative'],
        dflt: 'group',
        role: 'info',
        description: [
            'Determines how bars at the same location coordinate',
            'are displayed on the graph.',
            'With *stack*, the bars are stacked on top of one another',
            'With *relative*, the bars are stacked on top of one another,',
            'with negative values below the axis, positive values above',
            'With *group*, the bars are plotted next to one another',
            'centered around the shared location.',
            'With *overlay*, the bars are plotted over one another,',
            'you might need to an *opacity* to see multiple bars.'
        ].join(' ')
    },
    barnorm: {
        valType: 'enumerated',
        values: ['', 'fraction', 'percent'],
        dflt: '',
        role: 'info',
        description: [
            'Sets the normalization for bar traces on the graph.',
            'With *fraction*, the value of each bar is divide by the sum of the',
            'values at the location coordinate.',
            'With *percent*, the results form *fraction* are presented in percents.'
        ].join(' ')
    },
    bargap: {
        valType: 'number',
        min: 0,
        max: 1,
        role: 'style',
        description: [
            'Sets the gap (in plot fraction) between bars of',
            'adjacent location coordinates.'
        ].join(' ')
    },
    bargroupgap: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 0,
        role: 'style',
        description: [
            'Sets the gap (in plot fraction) between bars of',
            'the same location coordinate.'
        ].join(' ')
    }
};

},{}],733:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');
var Lib = require('../../lib');

var layoutAttributes = require('./layout_attributes');


module.exports = function(layoutIn, layoutOut, fullData) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }

    var hasBars = false,
        shouldBeGapless = false,
        gappedAnyway = false,
        usedSubplots = {};

    for(var i = 0; i < fullData.length; i++) {
        var trace = fullData[i];
        if(Registry.traceIs(trace, 'bar')) hasBars = true;
        else continue;

        // if we have at least 2 grouped bar traces on the same subplot,
        // we should default to a gap anyway, even if the data is histograms
        if(layoutIn.barmode !== 'overlay' && layoutIn.barmode !== 'stack') {
            var subploti = trace.xaxis + trace.yaxis;
            if(usedSubplots[subploti]) gappedAnyway = true;
            usedSubplots[subploti] = true;
        }

        if(trace.visible && trace.type === 'histogram') {
            var pa = Axes.getFromId({_fullLayout: layoutOut},
                        trace[trace.orientation === 'v' ? 'xaxis' : 'yaxis']);
            if(pa.type !== 'category') shouldBeGapless = true;
        }
    }

    if(!hasBars) return;

    var mode = coerce('barmode');
    if(mode !== 'overlay') coerce('barnorm');

    coerce('bargap', (shouldBeGapless && !gappedAnyway) ? 0 : 0.2);
    coerce('bargroupgap');
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"../../registry":717,"./layout_attributes":732}],734:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var isNumeric = require('fast-isnumeric');
var tinycolor = require('tinycolor2');

var Lib = require('../../lib');
var svgTextUtils = require('../../lib/svg_text_utils');

var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var ErrorBars = require('../../components/errorbars');

var attributes = require('./attributes'),
    attributeText = attributes.text,
    attributeTextPosition = attributes.textposition,
    attributeTextFont = attributes.textfont,
    attributeInsideTextFont = attributes.insidetextfont,
    attributeOutsideTextFont = attributes.outsidetextfont;

// padding in pixels around text
var TEXTPAD = 3;

module.exports = function plot(gd, plotinfo, cdbar) {
    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        fullLayout = gd._fullLayout;

    var bartraces = plotinfo.plot.select('.barlayer')
        .selectAll('g.trace.bars')
            .data(cdbar)
      .enter().append('g')
        .attr('class', 'trace bars');

    bartraces.append('g')
        .attr('class', 'points')
        .each(function(d) {
            var t = d[0].t,
                trace = d[0].trace,
                poffset = t.poffset,
                poffsetIsArray = Array.isArray(poffset),
                barwidth = t.barwidth,
                barwidthIsArray = Array.isArray(barwidth);

            d3.select(this).selectAll('g.point')
                .data(Lib.identity)
              .enter().append('g').classed('point', true)
                .each(function(di, i) {
                    // now display the bar
                    // clipped xf/yf (2nd arg true): non-positive
                    // log values go off-screen by plotwidth
                    // so you see them continue if you drag the plot
                    var p0 = di.p + ((poffsetIsArray) ? poffset[i] : poffset),
                        p1 = p0 + ((barwidthIsArray) ? barwidth[i] : barwidth),
                        s0 = di.b,
                        s1 = s0 + di.s;

                    var x0, x1, y0, y1;
                    if(trace.orientation === 'h') {
                        y0 = ya.c2p(p0, true);
                        y1 = ya.c2p(p1, true);
                        x0 = xa.c2p(s0, true);
                        x1 = xa.c2p(s1, true);
                    }
                    else {
                        x0 = xa.c2p(p0, true);
                        x1 = xa.c2p(p1, true);
                        y0 = ya.c2p(s0, true);
                        y1 = ya.c2p(s1, true);
                    }

                    if(!isNumeric(x0) || !isNumeric(x1) ||
                            !isNumeric(y0) || !isNumeric(y1) ||
                            x0 === x1 || y0 === y1) {
                        d3.select(this).remove();
                        return;
                    }

                    var lw = (di.mlw + 1 || trace.marker.line.width + 1 ||
                            (di.trace ? di.trace.marker.line.width : 0) + 1) - 1,
                        offset = d3.round((lw / 2) % 1, 2);

                    function roundWithLine(v) {
                        // if there are explicit gaps, don't round,
                        // it can make the gaps look crappy
                        return (fullLayout.bargap === 0 && fullLayout.bargroupgap === 0) ?
                            d3.round(Math.round(v) - offset, 2) : v;
                    }

                    function expandToVisible(v, vc) {
                        // if it's not in danger of disappearing entirely,
                        // round more precisely
                        return Math.abs(v - vc) >= 2 ? roundWithLine(v) :
                        // but if it's very thin, expand it so it's
                        // necessarily visible, even if it might overlap
                        // its neighbor
                        (v > vc ? Math.ceil(v) : Math.floor(v));
                    }

                    if(!gd._context.staticPlot) {
                        // if bars are not fully opaque or they have a line
                        // around them, round to integer pixels, mainly for
                        // safari so we prevent overlaps from its expansive
                        // pixelation. if the bars ARE fully opaque and have
                        // no line, expand to a full pixel to make sure we
                        // can see them
                        var op = Color.opacity(di.mc || trace.marker.color),
                            fixpx = (op < 1 || lw > 0.01) ?
                                roundWithLine : expandToVisible;
                        x0 = fixpx(x0, x1);
                        x1 = fixpx(x1, x0);
                        y0 = fixpx(y0, y1);
                        y1 = fixpx(y1, y0);
                    }

                    // append bar path and text
                    var bar = d3.select(this);

                    bar.append('path').attr('d',
                        'M' + x0 + ',' + y0 + 'V' + y1 + 'H' + x1 + 'V' + y0 + 'Z');

                    appendBarText(gd, bar, d, i, x0, x1, y0, y1);
                });
        });

    // error bars are on the top
    bartraces.call(ErrorBars.plot, plotinfo);

};

function appendBarText(gd, bar, calcTrace, i, x0, x1, y0, y1) {
    function appendTextNode(bar, text, textFont) {
        var textSelection = bar.append('text')
            // prohibit tex interpretation until we can handle
            // tex and regular text together
            .attr('data-notex', 1)
            .text(text)
            .attr({
                'class': 'bartext',
                transform: '',
                'data-bb': '',
                'text-anchor': 'middle',
                x: 0,
                y: 0
            })
            .call(Drawing.font, textFont);

        textSelection.call(svgTextUtils.convertToTspans);
        textSelection.selectAll('tspan.line').attr({x: 0, y: 0});

        return textSelection;
    }

    // get trace attributes
    var trace = calcTrace[0].trace,
        orientation = trace.orientation;

    var text = getText(trace, i);
    if(!text) return;

    var textPosition = getTextPosition(trace, i);
    if(textPosition === 'none') return;

    var textFont = getTextFont(trace, i, gd._fullLayout.font),
        insideTextFont = getInsideTextFont(trace, i, textFont),
        outsideTextFont = getOutsideTextFont(trace, i, textFont);

    // compute text position
    var barmode = gd._fullLayout.barmode,
        inStackMode = (barmode === 'stack'),
        inRelativeMode = (barmode === 'relative'),
        inStackOrRelativeMode = inStackMode || inRelativeMode,

        calcBar = calcTrace[i],
        isOutmostBar = !inStackOrRelativeMode || calcBar._outmost,

        barWidth = Math.abs(x1 - x0) - 2 * TEXTPAD,  // padding excluded
        barHeight = Math.abs(y1 - y0) - 2 * TEXTPAD,  // padding excluded

        textSelection,
        textBB,
        textWidth,
        textHeight;

    if(textPosition === 'outside') {
        if(!isOutmostBar) textPosition = 'inside';
    }

    if(textPosition === 'auto') {
        if(isOutmostBar) {
            // draw text using insideTextFont and check if it fits inside bar
            textSelection = appendTextNode(bar, text, insideTextFont);

            textBB = Drawing.bBox(textSelection.node()),
            textWidth = textBB.width,
            textHeight = textBB.height;

            var textHasSize = (textWidth > 0 && textHeight > 0),
                fitsInside =
                    (textWidth <= barWidth && textHeight <= barHeight),
                fitsInsideIfRotated =
                    (textWidth <= barHeight && textHeight <= barWidth),
                fitsInsideIfShrunk = (orientation === 'h') ?
                    (barWidth >= textWidth * (barHeight / textHeight)) :
                    (barHeight >= textHeight * (barWidth / textWidth));
            if(textHasSize &&
                    (fitsInside || fitsInsideIfRotated || fitsInsideIfShrunk)) {
                textPosition = 'inside';
            }
            else {
                textPosition = 'outside';
                textSelection.remove();
                textSelection = null;
            }
        }
        else textPosition = 'inside';
    }

    if(!textSelection) {
        textSelection = appendTextNode(bar, text,
                (textPosition === 'outside') ?
                outsideTextFont : insideTextFont);

        textBB = Drawing.bBox(textSelection.node()),
        textWidth = textBB.width,
        textHeight = textBB.height;

        if(textWidth <= 0 || textHeight <= 0) {
            textSelection.remove();
            return;
        }
    }

    // compute text transform
    var transform;
    if(textPosition === 'outside') {
        transform = getTransformToMoveOutsideBar(x0, x1, y0, y1, textBB,
            orientation);
    }
    else {
        transform = getTransformToMoveInsideBar(x0, x1, y0, y1, textBB,
            orientation);
    }

    textSelection.attr('transform', transform);
}

function getTransformToMoveInsideBar(x0, x1, y0, y1, textBB, orientation) {
    // compute text and target positions
    var textWidth = textBB.width,
        textHeight = textBB.height,
        textX = (textBB.left + textBB.right) / 2,
        textY = (textBB.top + textBB.bottom) / 2,
        barWidth = Math.abs(x1 - x0),
        barHeight = Math.abs(y1 - y0),
        targetWidth,
        targetHeight,
        targetX,
        targetY;

    // apply text padding
    var textpad;
    if(barWidth > (2 * TEXTPAD) && barHeight > (2 * TEXTPAD)) {
        textpad = TEXTPAD;
        barWidth -= 2 * textpad;
        barHeight -= 2 * textpad;
    }
    else textpad = 0;

    // compute rotation and scale
    var rotate,
        scale;

    if(textWidth <= barWidth && textHeight <= barHeight) {
        // no scale or rotation is required
        rotate = false;
        scale = 1;
    }
    else if(textWidth <= barHeight && textHeight <= barWidth) {
        // only rotation is required
        rotate = true;
        scale = 1;
    }
    else if((textWidth < textHeight) === (barWidth < barHeight)) {
        // only scale is required
        rotate = false;
        scale = Math.min(barWidth / textWidth, barHeight / textHeight);
    }
    else {
        // both scale and rotation are required
        rotate = true;
        scale = Math.min(barHeight / textWidth, barWidth / textHeight);
    }

    if(rotate) rotate = 90;  // rotate clockwise

    // compute text and target positions
    if(rotate) {
        targetWidth = scale * textHeight;
        targetHeight = scale * textWidth;
    }
    else {
        targetWidth = scale * textWidth;
        targetHeight = scale * textHeight;
    }

    if(orientation === 'h') {
        if(x1 < x0) {
            // bar end is on the left hand side
            targetX = x1 + textpad + targetWidth / 2;
            targetY = (y0 + y1) / 2;
        }
        else {
            targetX = x1 - textpad - targetWidth / 2;
            targetY = (y0 + y1) / 2;
        }
    }
    else {
        if(y1 > y0) {
            // bar end is on the bottom
            targetX = (x0 + x1) / 2;
            targetY = y1 - textpad - targetHeight / 2;
        }
        else {
            targetX = (x0 + x1) / 2;
            targetY = y1 + textpad + targetHeight / 2;
        }
    }

    return getTransform(textX, textY, targetX, targetY, scale, rotate);
}

function getTransformToMoveOutsideBar(x0, x1, y0, y1, textBB, orientation) {
    var barWidth = (orientation === 'h') ?
            Math.abs(y1 - y0) :
            Math.abs(x1 - x0),
        textpad;

    // apply text padding if possible
    if(barWidth > 2 * TEXTPAD) {
        textpad = TEXTPAD;
        barWidth -= 2 * textpad;
    }

    // compute rotation and scale
    var rotate = false,
        scale = (orientation === 'h') ?
            Math.min(1, barWidth / textBB.height) :
            Math.min(1, barWidth / textBB.width);

    // compute text and target positions
    var textX = (textBB.left + textBB.right) / 2,
        textY = (textBB.top + textBB.bottom) / 2,
        targetWidth,
        targetHeight,
        targetX,
        targetY;
    if(rotate) {
        targetWidth = scale * textBB.height;
        targetHeight = scale * textBB.width;
    }
    else {
        targetWidth = scale * textBB.width;
        targetHeight = scale * textBB.height;
    }

    if(orientation === 'h') {
        if(x1 < x0) {
            // bar end is on the left hand side
            targetX = x1 - textpad - targetWidth / 2;
            targetY = (y0 + y1) / 2;
        }
        else {
            targetX = x1 + textpad + targetWidth / 2;
            targetY = (y0 + y1) / 2;
        }
    }
    else {
        if(y1 > y0) {
            // bar end is on the bottom
            targetX = (x0 + x1) / 2;
            targetY = y1 + textpad + targetHeight / 2;
        }
        else {
            targetX = (x0 + x1) / 2;
            targetY = y1 - textpad - targetHeight / 2;
        }
    }

    return getTransform(textX, textY, targetX, targetY, scale, rotate);
}

function getTransform(textX, textY, targetX, targetY, scale, rotate) {
    var transformScale,
        transformRotate,
        transformTranslate;

    if(scale < 1) transformScale = 'scale(' + scale + ') ';
    else {
        scale = 1;
        transformScale = '';
    }

    transformRotate = (rotate) ?
        'rotate(' + rotate + ' ' + textX + ' ' + textY + ') ' : '';

    // Note that scaling also affects the center of the text box
    var translateX = (targetX - scale * textX),
        translateY = (targetY - scale * textY);
    transformTranslate = 'translate(' + translateX + ' ' + translateY + ')';

    return transformTranslate + transformScale + transformRotate;
}

function getText(trace, index) {
    var value = getValue(trace.text, index);
    return coerceString(attributeText, value);
}

function getTextPosition(trace, index) {
    var value = getValue(trace.textposition, index);
    return coerceEnumerated(attributeTextPosition, value);
}

function getTextFont(trace, index, defaultValue) {
    return getFontValue(
        attributeTextFont, trace.textfont, index, defaultValue);
}

function getInsideTextFont(trace, index, defaultValue) {
    return getFontValue(
        attributeInsideTextFont, trace.insidetextfont, index, defaultValue);
}

function getOutsideTextFont(trace, index, defaultValue) {
    return getFontValue(
        attributeOutsideTextFont, trace.outsidetextfont, index, defaultValue);
}

function getFontValue(attributeDefinition, attributeValue, index, defaultValue) {
    attributeValue = attributeValue || {};

    var familyValue = getValue(attributeValue.family, index),
        sizeValue = getValue(attributeValue.size, index),
        colorValue = getValue(attributeValue.color, index);

    return {
        family: coerceString(
            attributeDefinition.family, familyValue, defaultValue.family),
        size: coerceNumber(
            attributeDefinition.size, sizeValue, defaultValue.size),
        color: coerceColor(
            attributeDefinition.color, colorValue, defaultValue.color)
    };
}

function getValue(arrayOrScalar, index) {
    var value;
    if(!Array.isArray(arrayOrScalar)) value = arrayOrScalar;
    else if(index < arrayOrScalar.length) value = arrayOrScalar[index];
    return value;
}

function coerceString(attributeDefinition, value, defaultValue) {
    if(typeof value === 'string') {
        if(value || !attributeDefinition.noBlank) return value;
    }
    else if(typeof value === 'number') {
        if(!attributeDefinition.strict) return String(value);
    }

    return (defaultValue !== undefined) ?
        defaultValue :
        attributeDefinition.dflt;
}

function coerceEnumerated(attributeDefinition, value, defaultValue) {
    if(attributeDefinition.coerceNumber) value = +value;

    if(attributeDefinition.values.indexOf(value) !== -1) return value;

    return (defaultValue !== undefined) ?
        defaultValue :
        attributeDefinition.dflt;
}

function coerceNumber(attributeDefinition, value, defaultValue) {
    if(isNumeric(value)) {
        value = +value;

        var min = attributeDefinition.min,
            max = attributeDefinition.max,
            isOutOfBounds = (min !== undefined && value < min) ||
                (max !== undefined && value > max);

        if(!isOutOfBounds) return value;
    }

    return (defaultValue !== undefined) ?
        defaultValue :
        attributeDefinition.dflt;
}

function coerceColor(attributeDefinition, value, defaultValue) {
    if(tinycolor(value).isValid()) return value;

    return (defaultValue !== undefined) ?
        defaultValue :
        attributeDefinition.dflt;
}

},{"../../components/color":510,"../../components/drawing":533,"../../components/errorbars":539,"../../lib":610,"../../lib/svg_text_utils":625,"./attributes":727,"d3":86,"fast-isnumeric":97,"tinycolor2":985}],735:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');
var Sieve = require('./sieve.js');

/*
 * Bar chart stacking/grouping positioning and autoscaling calculations
 * for each direction separately calculate the ranges and positions
 * note that this handles histograms too
 * now doing this one subplot at a time
 */

module.exports = function setPositions(gd, plotinfo) {
    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis;

    var fullTraces = gd._fullData,
        calcTraces = gd.calcdata,
        calcTracesHorizontal = [],
        calcTracesVertical = [],
        i;
    for(i = 0; i < fullTraces.length; i++) {
        var fullTrace = fullTraces[i];
        if(
            fullTrace.visible === true &&
            Registry.traceIs(fullTrace, 'bar') &&
            fullTrace.xaxis === xa._id &&
            fullTrace.yaxis === ya._id
        ) {
            if(fullTrace.orientation === 'h') {
                calcTracesHorizontal.push(calcTraces[i]);
            }
            else {
                calcTracesVertical.push(calcTraces[i]);
            }
        }
    }

    setGroupPositions(gd, xa, ya, calcTracesVertical);
    setGroupPositions(gd, ya, xa, calcTracesHorizontal);
};


function setGroupPositions(gd, pa, sa, calcTraces) {
    if(!calcTraces.length) return;

    var barmode = gd._fullLayout.barmode,
        overlay = (barmode === 'overlay'),
        group = (barmode === 'group'),
        excluded,
        included,
        i, calcTrace, fullTrace;

    if(overlay) {
        setGroupPositionsInOverlayMode(gd, pa, sa, calcTraces);
    }
    else if(group) {
        // exclude from the group those traces for which the user set an offset
        excluded = [];
        included = [];
        for(i = 0; i < calcTraces.length; i++) {
            calcTrace = calcTraces[i];
            fullTrace = calcTrace[0].trace;

            if(fullTrace.offset === undefined) included.push(calcTrace);
            else excluded.push(calcTrace);
        }

        if(included.length) {
            setGroupPositionsInGroupMode(gd, pa, sa, included);
        }
        if(excluded.length) {
            setGroupPositionsInOverlayMode(gd, pa, sa, excluded);
        }
    }
    else {
        // exclude from the stack those traces for which the user set a base
        excluded = [];
        included = [];
        for(i = 0; i < calcTraces.length; i++) {
            calcTrace = calcTraces[i];
            fullTrace = calcTrace[0].trace;

            if(fullTrace.base === undefined) included.push(calcTrace);
            else excluded.push(calcTrace);
        }

        if(included.length) {
            setGroupPositionsInStackOrRelativeMode(gd, pa, sa, included);
        }
        if(excluded.length) {
            setGroupPositionsInOverlayMode(gd, pa, sa, excluded);
        }
    }
}


function setGroupPositionsInOverlayMode(gd, pa, sa, calcTraces) {
    var barnorm = gd._fullLayout.barnorm,
        separateNegativeValues = false,
        dontMergeOverlappingData = !barnorm;

    // update position axis and set bar offsets and widths
    for(var i = 0; i < calcTraces.length; i++) {
        var calcTrace = calcTraces[i];

        var sieve = new Sieve(
            [calcTrace], separateNegativeValues, dontMergeOverlappingData
        );

        // set bar offsets and widths, and update position axis
        setOffsetAndWidth(gd, pa, sieve);

        // set bar bases and sizes, and update size axis
        //
        // (note that `setGroupPositionsInOverlayMode` handles the case barnorm
        // is defined, because this function is also invoked for traces that
        // can't be grouped or stacked)
        if(barnorm) {
            sieveBars(gd, sa, sieve);
            normalizeBars(gd, sa, sieve);
        }
        else {
            setBaseAndTop(gd, sa, sieve);
        }
    }
}


function setGroupPositionsInGroupMode(gd, pa, sa, calcTraces) {
    var fullLayout = gd._fullLayout,
        barnorm = fullLayout.barnorm,
        separateNegativeValues = false,
        dontMergeOverlappingData = !barnorm,
        sieve = new Sieve(
                calcTraces, separateNegativeValues, dontMergeOverlappingData
            );

    // set bar offsets and widths, and update position axis
    setOffsetAndWidthInGroupMode(gd, pa, sieve);

    // set bar bases and sizes, and update size axis
    if(barnorm) {
        sieveBars(gd, sa, sieve);
        normalizeBars(gd, sa, sieve);
    }
    else {
        setBaseAndTop(gd, sa, sieve);
    }
}


function setGroupPositionsInStackOrRelativeMode(gd, pa, sa, calcTraces) {
    var fullLayout = gd._fullLayout,
        barmode = fullLayout.barmode,
        stack = (barmode === 'stack'),
        relative = (barmode === 'relative'),
        barnorm = gd._fullLayout.barnorm,
        separateNegativeValues = relative,
        dontMergeOverlappingData = !(barnorm || stack || relative),
        sieve = new Sieve(
                calcTraces, separateNegativeValues, dontMergeOverlappingData
            );

    // set bar offsets and widths, and update position axis
    setOffsetAndWidth(gd, pa, sieve);

    // set bar bases and sizes, and update size axis
    stackBars(gd, sa, sieve);

    // flag the outmost bar (for text display purposes)
    for(var i = 0; i < calcTraces.length; i++) {
        var calcTrace = calcTraces[i];

        for(var j = 0; j < calcTrace.length; j++) {
            var bar = calcTrace[j];

            if(!isNumeric(bar.s)) continue;

            var isOutmostBar = ((bar.b + bar.s) === sieve.get(bar.p, bar.s));
            if(isOutmostBar) bar._outmost = true;
        }
    }

    // Note that marking the outmost bars has to be done
    // before `normalizeBars` changes `bar.b` and `bar.s`.
    if(barnorm) normalizeBars(gd, sa, sieve);
}


function setOffsetAndWidth(gd, pa, sieve) {
    var fullLayout = gd._fullLayout,
        bargap = fullLayout.bargap,
        bargroupgap = fullLayout.bargroupgap,
        minDiff = sieve.minDiff,
        calcTraces = sieve.traces,
        i, calcTrace, calcTrace0,
        t;

    // set bar offsets and widths
    var barGroupWidth = minDiff * (1 - bargap),
        barWidthPlusGap = barGroupWidth,
        barWidth = barWidthPlusGap * (1 - bargroupgap);

    // computer bar group center and bar offset
    var offsetFromCenter = -barWidth / 2;

    for(i = 0; i < calcTraces.length; i++) {
        calcTrace = calcTraces[i];
        calcTrace0 = calcTrace[0];

        // store bar width and offset for this trace
        t = calcTrace0.t;
        t.barwidth = barWidth;
        t.poffset = offsetFromCenter;
        t.bargroupwidth = barGroupWidth;
    }

    // stack bars that only differ by rounding
    sieve.binWidth = calcTraces[0][0].t.barwidth / 100;

    // if defined, apply trace offset and width
    applyAttributes(sieve);

    // store the bar center in each calcdata item
    setBarCenter(gd, pa, sieve);

    // update position axes
    updatePositionAxis(gd, pa, sieve);
}


function setOffsetAndWidthInGroupMode(gd, pa, sieve) {
    var fullLayout = gd._fullLayout,
        bargap = fullLayout.bargap,
        bargroupgap = fullLayout.bargroupgap,
        positions = sieve.positions,
        distinctPositions = sieve.distinctPositions,
        minDiff = sieve.minDiff,
        calcTraces = sieve.traces,
        i, calcTrace, calcTrace0,
        t;

    // if there aren't any overlapping positions,
    // let them have full width even if mode is group
    var overlap = (positions.length !== distinctPositions.length);

    var nTraces = calcTraces.length,
        barGroupWidth = minDiff * (1 - bargap),
        barWidthPlusGap = (overlap) ? barGroupWidth / nTraces : barGroupWidth,
        barWidth = barWidthPlusGap * (1 - bargroupgap);

    for(i = 0; i < nTraces; i++) {
        calcTrace = calcTraces[i];
        calcTrace0 = calcTrace[0];

        // computer bar group center and bar offset
        var offsetFromCenter = (overlap) ?
                ((2 * i + 1 - nTraces) * barWidthPlusGap - barWidth) / 2 :
                -barWidth / 2;

        // store bar width and offset for this trace
        t = calcTrace0.t;
        t.barwidth = barWidth;
        t.poffset = offsetFromCenter;
        t.bargroupwidth = barGroupWidth;
    }

    // stack bars that only differ by rounding
    sieve.binWidth = calcTraces[0][0].t.barwidth / 100;

    // if defined, apply trace width
    applyAttributes(sieve);

    // store the bar center in each calcdata item
    setBarCenter(gd, pa, sieve);

    // update position axes
    updatePositionAxis(gd, pa, sieve, overlap);
}


function applyAttributes(sieve) {
    var calcTraces = sieve.traces,
        i, calcTrace, calcTrace0, fullTrace,
        j,
        t;

    for(i = 0; i < calcTraces.length; i++) {
        calcTrace = calcTraces[i];
        calcTrace0 = calcTrace[0];
        fullTrace = calcTrace0.trace;
        t = calcTrace0.t;

        var offset = fullTrace.offset,
            initialPoffset = t.poffset,
            newPoffset;

        if(Array.isArray(offset)) {
            // if offset is an array, then clone it into t.poffset.
            newPoffset = offset.slice(0, calcTrace.length);

            // guard against non-numeric items
            for(j = 0; j < newPoffset.length; j++) {
                if(!isNumeric(newPoffset[j])) {
                    newPoffset[j] = initialPoffset;
                }
            }

            // if the length of the array is too short,
            // then extend it with the initial value of t.poffset
            for(j = newPoffset.length; j < calcTrace.length; j++) {
                newPoffset.push(initialPoffset);
            }

            t.poffset = newPoffset;
        }
        else if(offset !== undefined) {
            t.poffset = offset;
        }

        var width = fullTrace.width,
            initialBarwidth = t.barwidth;

        if(Array.isArray(width)) {
            // if width is an array, then clone it into t.barwidth.
            var newBarwidth = width.slice(0, calcTrace.length);

            // guard against non-numeric items
            for(j = 0; j < newBarwidth.length; j++) {
                if(!isNumeric(newBarwidth[j])) newBarwidth[j] = initialBarwidth;
            }

            // if the length of the array is too short,
            // then extend it with the initial value of t.barwidth
            for(j = newBarwidth.length; j < calcTrace.length; j++) {
                newBarwidth.push(initialBarwidth);
            }

            t.barwidth = newBarwidth;

            // if user didn't set offset,
            // then correct t.poffset to ensure bars remain centered
            if(offset === undefined) {
                newPoffset = [];
                for(j = 0; j < calcTrace.length; j++) {
                    newPoffset.push(
                        initialPoffset + (initialBarwidth - newBarwidth[j]) / 2
                    );
                }
                t.poffset = newPoffset;
            }
        }
        else if(width !== undefined) {
            t.barwidth = width;

            // if user didn't set offset,
            // then correct t.poffset to ensure bars remain centered
            if(offset === undefined) {
                t.poffset = initialPoffset + (initialBarwidth - width) / 2;
            }
        }
    }
}


function setBarCenter(gd, pa, sieve) {
    var calcTraces = sieve.traces,
        pLetter = getAxisLetter(pa);

    for(var i = 0; i < calcTraces.length; i++) {
        var calcTrace = calcTraces[i],
            t = calcTrace[0].t,
            poffset = t.poffset,
            poffsetIsArray = Array.isArray(poffset),
            barwidth = t.barwidth,
            barwidthIsArray = Array.isArray(barwidth);

        for(var j = 0; j < calcTrace.length; j++) {
            var calcBar = calcTrace[j];

            calcBar[pLetter] = calcBar.p +
                ((poffsetIsArray) ? poffset[j] : poffset) +
                ((barwidthIsArray) ? barwidth[j] : barwidth) / 2;
        }
    }
}


function updatePositionAxis(gd, pa, sieve, allowMinDtick) {
    var calcTraces = sieve.traces,
        distinctPositions = sieve.distinctPositions,
        distinctPositions0 = distinctPositions[0],
        minDiff = sieve.minDiff,
        vpad = minDiff / 2;

    Axes.minDtick(pa, minDiff, distinctPositions0, allowMinDtick);

    // If the user set the bar width or the offset,
    // then bars can be shifted away from their positions
    // and widths can be larger than minDiff.
    //
    // Here, we compute pMin and pMax to expand the position axis,
    // so that all bars are fully within the axis range.
    var pMin = Math.min.apply(Math, distinctPositions) - vpad,
        pMax = Math.max.apply(Math, distinctPositions) + vpad;

    for(var i = 0; i < calcTraces.length; i++) {
        var calcTrace = calcTraces[i],
            calcTrace0 = calcTrace[0],
            fullTrace = calcTrace0.trace;

        if(fullTrace.width === undefined && fullTrace.offset === undefined) {
            continue;
        }

        var t = calcTrace0.t,
            poffset = t.poffset,
            barwidth = t.barwidth,
            poffsetIsArray = Array.isArray(poffset),
            barwidthIsArray = Array.isArray(barwidth);

        for(var j = 0; j < calcTrace.length; j++) {
            var calcBar = calcTrace[j],
                calcBarOffset = (poffsetIsArray) ? poffset[j] : poffset,
                calcBarWidth = (barwidthIsArray) ? barwidth[j] : barwidth,
                p = calcBar.p,
                l = p + calcBarOffset,
                r = l + calcBarWidth;

            pMin = Math.min(pMin, l);
            pMax = Math.max(pMax, r);
        }
    }

    Axes.expand(pa, [pMin, pMax], {padded: false});
}


function setBaseAndTop(gd, sa, sieve) {
    // store these bar bases and tops in calcdata
    // and make sure the size axis includes zero,
    // along with the bases and tops of each bar.
    var traces = sieve.traces,
        sLetter = getAxisLetter(sa),
        sMax = sa.l2c(sa.c2l(0)),
        sMin = sMax;

    for(var i = 0; i < traces.length; i++) {
        var trace = traces[i];

        for(var j = 0; j < trace.length; j++) {
            var bar = trace[j],
                barBase = bar.b,
                barTop = barBase + bar.s;

            bar[sLetter] = barTop;

            if(isNumeric(sa.c2l(barTop))) {
                sMax = Math.max(sMax, barTop);
                sMin = Math.min(sMin, barTop);
            }
            if(isNumeric(sa.c2l(barBase))) {
                sMax = Math.max(sMax, barBase);
                sMin = Math.min(sMin, barBase);
            }
        }
    }

    Axes.expand(sa, [sMin, sMax], {tozero: true, padded: true});
}


function stackBars(gd, sa, sieve) {
    var fullLayout = gd._fullLayout,
        barnorm = fullLayout.barnorm,
        sLetter = getAxisLetter(sa),
        traces = sieve.traces,
        i, trace,
        j, bar;

    var sMax = sa.l2c(sa.c2l(0)),
        sMin = sMax;

    for(i = 0; i < traces.length; i++) {
        trace = traces[i];

        for(j = 0; j < trace.length; j++) {
            bar = trace[j];

            if(!isNumeric(bar.s)) continue;

            // stack current bar and get previous sum
            var barBase = sieve.put(bar.p, bar.b + bar.s),
                barTop = barBase + bar.b + bar.s;

            // store the bar base and top in each calcdata item
            bar.b = barBase;
            bar[sLetter] = barTop;

            if(!barnorm) {
                if(isNumeric(sa.c2l(barTop))) {
                    sMax = Math.max(sMax, barTop);
                    sMin = Math.min(sMin, barTop);
                }
                if(isNumeric(sa.c2l(barBase))) {
                    sMax = Math.max(sMax, barBase);
                    sMin = Math.min(sMin, barBase);
                }
            }
        }
    }

    // if barnorm is set, let normalizeBars update the axis range
    if(!barnorm) Axes.expand(sa, [sMin, sMax], {tozero: true, padded: true});
}


function sieveBars(gd, sa, sieve) {
    var traces = sieve.traces;

    for(var i = 0; i < traces.length; i++) {
        var trace = traces[i];

        for(var j = 0; j < trace.length; j++) {
            var bar = trace[j];

            if(isNumeric(bar.s)) sieve.put(bar.p, bar.b + bar.s);
        }
    }
}


function normalizeBars(gd, sa, sieve) {
    // Note:
    //
    // normalizeBars requires that either sieveBars or stackBars has been
    // previously invoked.

    var traces = sieve.traces,
        sLetter = getAxisLetter(sa),
        sTop = (gd._fullLayout.barnorm === 'fraction') ? 1 : 100,
        sTiny = sTop / 1e9, // in case of rounding error in sum
        sMin = 0,
        sMax = (gd._fullLayout.barmode === 'stack') ? sTop : 0,
        padded = false;

    for(var i = 0; i < traces.length; i++) {
        var trace = traces[i];

        for(var j = 0; j < trace.length; j++) {
            var bar = trace[j];

            if(!isNumeric(bar.s)) continue;

            var scale = Math.abs(sTop / sieve.get(bar.p, bar.s));
            bar.b *= scale;
            bar.s *= scale;

            var barBase = bar.b,
                barTop = barBase + bar.s;
            bar[sLetter] = barTop;

            if(isNumeric(sa.c2l(barTop))) {
                if(barTop < sMin - sTiny) {
                    padded = true;
                    sMin = barTop;
                }
                if(barTop > sMax + sTiny) {
                    padded = true;
                    sMax = barTop;
                }
            }

            if(isNumeric(sa.c2l(barBase))) {
                if(barBase < sMin - sTiny) {
                    padded = true;
                    sMin = barBase;
                }
                if(barBase > sMax + sTiny) {
                    padded = true;
                    sMax = barBase;
                }
            }
        }
    }

    // update range of size axis
    Axes.expand(sa, [sMin, sMax], {tozero: true, padded: padded});
}


function getAxisLetter(ax) {
    return ax._id.charAt(0);
}

},{"../../plots/cartesian/axes":642,"../../registry":717,"./sieve.js":736,"fast-isnumeric":97}],736:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = Sieve;

var Lib = require('../../lib');

/**
 * Helper class to sieve data from traces into bins
 *
 * @class
 * @param {Array}   traces
 *                  Array of calculated traces
 * @param {boolean} [separateNegativeValues]
 *                  If true, then split data at the same position into a bar
 *                  for positive values and another for negative values
 * @param {boolean} [dontMergeOverlappingData]
 *                  If true, then don't merge overlapping bars into a single bar
 */
function Sieve(traces, separateNegativeValues, dontMergeOverlappingData) {
    this.traces = traces;
    this.separateNegativeValues = separateNegativeValues;
    this.dontMergeOverlappingData = dontMergeOverlappingData;

    var positions = [];
    for(var i = 0; i < traces.length; i++) {
        var trace = traces[i];
        for(var j = 0; j < trace.length; j++) {
            var bar = trace[j];
            positions.push(bar.p);
        }
    }
    this.positions = positions;

    var dv = Lib.distinctVals(this.positions);
    this.distinctPositions = dv.vals;
    this.minDiff = dv.minDiff;

    this.binWidth = this.minDiff;

    this.bins = {};
}

/**
 * Sieve datum
 *
 * @method
 * @param {number} position
 * @param {number} value
 * @returns {number} Previous bin value
 */
Sieve.prototype.put = function put(position, value) {
    var label = this.getLabel(position, value),
        oldValue = this.bins[label] || 0;

    this.bins[label] = oldValue + value;

    return oldValue;
};

/**
 * Get current bin value for a given datum
 *
 * @method
 * @param {number} position  Position of datum
 * @param {number} [value]   Value of datum
 *                           (required if this.separateNegativeValues is true)
 * @returns {number} Current bin value
 */
Sieve.prototype.get = function put(position, value) {
    var label = this.getLabel(position, value);
    return this.bins[label] || 0;
};

/**
 * Get bin label for a given datum
 *
 * @method
 * @param {number} position  Position of datum
 * @param {number} [value]   Value of datum
 *                           (required if this.separateNegativeValues is true)
 * @returns {string} Bin label
 * (prefixed with a 'v' if value is negative and this.separateNegativeValues is
 * true; otherwise prefixed with '^')
 */
Sieve.prototype.getLabel = function getLabel(position, value) {
    var prefix = (value < 0 && this.separateNegativeValues) ? 'v' : '^',
        label = (this.dontMergeOverlappingData) ?
            position :
            Math.round(position / this.binWidth);
    return prefix + label;
};

},{"../../lib":610}],737:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var ErrorBars = require('../../components/errorbars');


module.exports = function style(gd) {
    var s = d3.select(gd).selectAll('g.trace.bars'),
        barcount = s.size(),
        fullLayout = gd._fullLayout;

    // trace styling
    s.style('opacity', function(d) { return d[0].trace.opacity; })

    // for gapless (either stacked or neighboring grouped) bars use
    // crispEdges to turn off antialiasing so an artificial gap
    // isn't introduced.
    .each(function(d) {
        if((fullLayout.barmode === 'stack' && barcount > 1) ||
                (fullLayout.bargap === 0 &&
                 fullLayout.bargroupgap === 0 &&
                 !d[0].trace.marker.line.width)) {
            d3.select(this).attr('shape-rendering', 'crispEdges');
        }
    });

    // then style the individual bars
    s.selectAll('g.points').each(function(d) {
        var trace = d[0].trace,
            marker = trace.marker,
            markerLine = marker.line,
            markerScale = Drawing.tryColorscale(marker, ''),
            lineScale = Drawing.tryColorscale(marker, 'line');

        d3.select(this).selectAll('path').each(function(d) {
            // allow all marker and marker line colors to be scaled
            // by given max and min to colorscales
            var fillColor,
                lineColor,
                lineWidth = (d.mlw + 1 || markerLine.width + 1) - 1,
                p = d3.select(this);

            if('mc' in d) fillColor = d.mcc = markerScale(d.mc);
            else if(Array.isArray(marker.color)) fillColor = Color.defaultLine;
            else fillColor = marker.color;

            p.style('stroke-width', lineWidth + 'px')
                .call(Color.fill, fillColor);
            if(lineWidth) {
                if('mlc' in d) lineColor = d.mlcc = lineScale(d.mlc);
                // weird case: array wasn't long enough to apply to every point
                else if(Array.isArray(markerLine.color)) lineColor = Color.defaultLine;
                else lineColor = markerLine.color;

                p.call(Color.stroke, lineColor);
            }
        });
        // TODO: text markers on bars, either extra text or just bar values
        // d3.select(this).selectAll('text')
        //     .call(Drawing.textPointStyle,d.t||d[0].t);
    });

    s.call(ErrorBars.style);
};

},{"../../components/color":510,"../../components/drawing":533,"../../components/errorbars":539,"d3":86}],738:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');
var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleDefaults = require('../../components/colorscale/defaults');


module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, defaultColor, layout) {
    coerce('marker.color', defaultColor);

    if(hasColorscale(traceIn, 'marker')) {
        colorscaleDefaults(
            traceIn, traceOut, layout, coerce, {prefix: 'marker.', cLetter: 'c'}
        );
    }

    coerce('marker.line.color', Color.defaultLine);

    if(hasColorscale(traceIn, 'marker.line')) {
        colorscaleDefaults(
            traceIn, traceOut, layout, coerce, {prefix: 'marker.line.', cLetter: 'c'}
        );
    }

    coerce('marker.line.width');
};

},{"../../components/color":510,"../../components/colorscale/defaults":519,"../../components/colorscale/has_colorscale":523}],739:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorAttrs = require('../../components/color/attributes');
var extendFlat = require('../../lib/extend').extendFlat;

var scatterMarkerAttrs = scatterAttrs.marker,
    scatterMarkerLineAttrs = scatterMarkerAttrs.line;


module.exports = {
    y: {
        valType: 'data_array',
        description: [
            'Sets the y sample data or coordinates.',
            'See overview for more info.'
        ].join(' ')
    },
    x: {
        valType: 'data_array',
        description: [
            'Sets the x sample data or coordinates.',
            'See overview for more info.'
        ].join(' ')
    },
    x0: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the x coordinate of the box.',
            'See overview for more info.'
        ].join(' ')
    },
    y0: {
        valType: 'any',
        role: 'info',
        description: [
            'Sets the y coordinate of the box.',
            'See overview for more info.'
        ].join(' ')
    },
    xcalendar: scatterAttrs.xcalendar,
    ycalendar: scatterAttrs.ycalendar,
    whiskerwidth: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 0.5,
        role: 'style',
        description: [
            'Sets the width of the whiskers relative to',
            'the box\' width.',
            'For example, with 1, the whiskers are as wide as the box(es).'
        ].join(' ')
    },
    boxpoints: {
        valType: 'enumerated',
        values: ['all', 'outliers', 'suspectedoutliers', false],
        dflt: 'outliers',
        role: 'style',
        description: [
            'If *outliers*, only the sample points lying outside the whiskers',
            'are shown',
            'If *suspectedoutliers*, the outlier points are shown and',
            'points either less than 4*Q1-3*Q3 or greater than 4*Q3-3*Q1',
            'are highlighted (see `outliercolor`)',
            'If *all*, all sample points are shown',
            'If *false*, only the box(es) are shown with no sample points'
        ].join(' ')
    },
    boxmean: {
        valType: 'enumerated',
        values: [true, 'sd', false],
        dflt: false,
        role: 'style',
        description: [
            'If *true*, the mean of the box(es)\' underlying distribution is',
            'drawn as a dashed line inside the box(es).',
            'If *sd* the standard deviation is also drawn.'
        ].join(' ')
    },
    jitter: {
        valType: 'number',
        min: 0,
        max: 1,
        role: 'style',
        description: [
            'Sets the amount of jitter in the sample points drawn.',
            'If *0*, the sample points align along the distribution axis.',
            'If *1*, the sample points are drawn in a random jitter of width',
            'equal to the width of the box(es).'
        ].join(' ')
    },
    pointpos: {
        valType: 'number',
        min: -2,
        max: 2,
        role: 'style',
        description: [
            'Sets the position of the sample points in relation to the box(es).',
            'If *0*, the sample points are places over the center of the box(es).',
            'Positive (negative) values correspond to positions to the',
            'right (left) for vertical boxes and above (below) for horizontal boxes'
        ].join(' ')
    },
    orientation: {
        valType: 'enumerated',
        values: ['v', 'h'],
        role: 'style',
        description: [
            'Sets the orientation of the box(es).',
            'If *v* (*h*), the distribution is visualized along',
            'the vertical (horizontal).'
        ].join(' ')
    },
    marker: {
        outliercolor: {
            valType: 'color',
            dflt: 'rgba(0, 0, 0, 0)',
            role: 'style',
            description: 'Sets the color of the outlier sample points.'
        },
        symbol: extendFlat({}, scatterMarkerAttrs.symbol,
            {arrayOk: false}),
        opacity: extendFlat({}, scatterMarkerAttrs.opacity,
            {arrayOk: false, dflt: 1}),
        size: extendFlat({}, scatterMarkerAttrs.size,
            {arrayOk: false}),
        color: extendFlat({}, scatterMarkerAttrs.color,
            {arrayOk: false}),
        line: {
            color: extendFlat({}, scatterMarkerLineAttrs.color,
                {arrayOk: false, dflt: colorAttrs.defaultLine}),
            width: extendFlat({}, scatterMarkerLineAttrs.width,
                {arrayOk: false, dflt: 0}),
            outliercolor: {
                valType: 'color',
                role: 'style',
                description: [
                    'Sets the border line color of the outlier sample points.',
                    'Defaults to marker.color'
                ].join(' ')
            },
            outlierwidth: {
                valType: 'number',
                min: 0,
                dflt: 1,
                role: 'style',
                description: [
                    'Sets the border line width (in px) of the outlier sample points.'
                ].join(' ')
            }
        }
    },
    line: {
        color: {
            valType: 'color',
            role: 'style',
            description: 'Sets the color of line bounding the box(es).'
        },
        width: {
            valType: 'number',
            role: 'style',
            min: 0,
            dflt: 2,
            description: 'Sets the width (in px) of line bounding the box(es).'
        }
    },
    fillcolor: scatterAttrs.fillcolor
};

},{"../../components/color/attributes":509,"../../lib/extend":603,"../scatter/attributes":834}],740:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');


// outlier definition based on http://www.physics.csbsju.edu/stats/box2.html
module.exports = function calc(gd, trace) {
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        ya = Axes.getFromId(gd, trace.yaxis || 'y'),
        orientation = trace.orientation,
        cd = [],
        valAxis, valLetter, val, valBinned,
        posAxis, posLetter, pos, posDistinct, dPos;

    // Set value (val) and position (pos) keys via orientation
    if(orientation === 'h') {
        valAxis = xa;
        valLetter = 'x';
        posAxis = ya;
        posLetter = 'y';
    } else {
        valAxis = ya;
        valLetter = 'y';
        posAxis = xa;
        posLetter = 'x';
    }

    val = valAxis.makeCalcdata(trace, valLetter);  // get val

    // size autorange based on all source points
    // position happens afterward when we know all the pos
    Axes.expand(valAxis, val, {padded: true});

    // In vertical (horizontal) box plots:
    // if no x (y) data, use x0 (y0), or name
    // so if you want one box
    // per trace, set x0 (y0) to the x (y) value or category for this trace
    // (or set x (y) to a constant array matching y (x))
    function getPos(gd, trace, posLetter, posAxis, val) {
        var pos0;
        if(posLetter in trace) pos = posAxis.makeCalcdata(trace, posLetter);
        else {
            if(posLetter + '0' in trace) pos0 = trace[posLetter + '0'];
            else if('name' in trace && (
                        posAxis.type === 'category' ||
                        (isNumeric(trace.name) &&
                            ['linear', 'log'].indexOf(posAxis.type) !== -1) ||
                        (Lib.isDateTime(trace.name) &&
                         posAxis.type === 'date')
                    )) {
                pos0 = trace.name;
            }
            else pos0 = gd.numboxes;
            pos0 = posAxis.d2c(pos0, 0, trace[posLetter + 'calendar']);
            pos = val.map(function() { return pos0; });
        }
        return pos;
    }

    pos = getPos(gd, trace, posLetter, posAxis, val);

    // get distinct positions and min difference
    var dv = Lib.distinctVals(pos);
    posDistinct = dv.vals;
    dPos = dv.minDiff / 2;

    function binVal(cd, val, pos, posDistinct, dPos) {
        var posDistinctLength = posDistinct.length,
            valLength = val.length,
            valBinned = [],
            bins = [],
            i, p, n, v;

        // store distinct pos in cd, find bins, init. valBinned
        for(i = 0; i < posDistinctLength; ++i) {
            p = posDistinct[i];
            cd[i] = {pos: p};
            bins[i] = p - dPos;
            valBinned[i] = [];
        }
        bins.push(posDistinct[posDistinctLength - 1] + dPos);

        // bin the values
        for(i = 0; i < valLength; ++i) {
            v = val[i];
            if(!isNumeric(v)) continue;
            n = Lib.findBin(pos[i], bins);
            if(n >= 0 && n < valLength) valBinned[n].push(v);
        }

        return valBinned;
    }

    valBinned = binVal(cd, val, pos, posDistinct, dPos);

    // sort the bins and calculate the stats
    function calculateStats(cd, valBinned) {
        var v, l, cdi, i;

        for(i = 0; i < valBinned.length; ++i) {
            v = valBinned[i].sort(Lib.sorterAsc);
            l = v.length;
            cdi = cd[i];

            cdi.val = v;  // put all values into calcdata
            cdi.min = v[0];
            cdi.max = v[l - 1];
            cdi.mean = Lib.mean(v, l);
            cdi.sd = Lib.stdev(v, l, cdi.mean);
            cdi.q1 = Lib.interp(v, 0.25);  // first quartile
            cdi.med = Lib.interp(v, 0.5);  // median
            cdi.q3 = Lib.interp(v, 0.75);  // third quartile
            // lower and upper fences - last point inside
            // 1.5 interquartile ranges from quartiles
            cdi.lf = Math.min(cdi.q1, v[
                Math.min(Lib.findBin(2.5 * cdi.q1 - 1.5 * cdi.q3, v, true) + 1, l - 1)]);
            cdi.uf = Math.max(cdi.q3, v[
                Math.max(Lib.findBin(2.5 * cdi.q3 - 1.5 * cdi.q1, v), 0)]);
            // lower and upper outliers - 3 IQR out (don't clip to max/min,
            // this is only for discriminating suspected & far outliers)
            cdi.lo = 4 * cdi.q1 - 3 * cdi.q3;
            cdi.uo = 4 * cdi.q3 - 3 * cdi.q1;
        }
    }

    calculateStats(cd, valBinned);

    // remove empty bins
    cd = cd.filter(function(cdi) { return cdi.val && cdi.val.length; });
    if(!cd.length) return [{t: {emptybox: true}}];

    // add numboxes and dPos to cd
    cd[0].t = {boxnum: gd.numboxes, dPos: dPos};
    gd.numboxes++;
    return cd;
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"fast-isnumeric":97}],741:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var Registry = require('../../registry');
var Color = require('../../components/color');

var attributes = require('./attributes');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var y = coerce('y'),
        x = coerce('x'),
        defaultOrientation;

    if(y && y.length) {
        defaultOrientation = 'v';
        if(!x) coerce('x0');
    } else if(x && x.length) {
        defaultOrientation = 'h';
        coerce('y0');
    } else {
        traceOut.visible = false;
        return;
    }

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y'], layout);

    coerce('orientation', defaultOrientation);

    coerce('line.color', (traceIn.marker || {}).color || defaultColor);
    coerce('line.width', 2);
    coerce('fillcolor', Color.addOpacity(traceOut.line.color, 0.5));

    coerce('whiskerwidth');
    coerce('boxmean');

    var outlierColorDflt = Lib.coerce2(traceIn, traceOut, attributes, 'marker.outliercolor'),
        lineoutliercolor = coerce('marker.line.outliercolor'),
        boxpoints = outlierColorDflt ||
                    lineoutliercolor ? coerce('boxpoints', 'suspectedoutliers') :
                    coerce('boxpoints');

    if(boxpoints) {
        coerce('jitter', boxpoints === 'all' ? 0.3 : 0);
        coerce('pointpos', boxpoints === 'all' ? -1.5 : 0);

        coerce('marker.symbol');
        coerce('marker.opacity');
        coerce('marker.size');
        coerce('marker.color', traceOut.line.color);
        coerce('marker.line.color');
        coerce('marker.line.width');

        if(boxpoints === 'suspectedoutliers') {
            coerce('marker.line.outliercolor', traceOut.marker.color);
            coerce('marker.line.outlierwidth');
        }
    }
};

},{"../../components/color":510,"../../lib":610,"../../registry":717,"./attributes":739}],742:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Axes = require('../../plots/cartesian/axes');
var Fx = require('../../plots/cartesian/graph_interact');
var Lib = require('../../lib');
var Color = require('../../components/color');

module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
    // closest mode: handicap box plots a little relative to others
    var cd = pointData.cd,
        trace = cd[0].trace,
        t = cd[0].t,
        xa = pointData.xa,
        ya = pointData.ya,
        closeData = [],
        dx, dy, distfn, boxDelta,
        posLetter, posAxis,
        val, valLetter, valAxis;

    // adjust inbox w.r.t. to calculate box size
    boxDelta = (hovermode === 'closest') ? 2.5 * t.bdPos : t.bdPos;

    if(trace.orientation === 'h') {
        dx = function(di) {
            return Fx.inbox(di.min - xval, di.max - xval);
        };
        dy = function(di) {
            var pos = di.pos + t.bPos - yval;
            return Fx.inbox(pos - boxDelta, pos + boxDelta);
        };
        posLetter = 'y';
        posAxis = ya;
        valLetter = 'x';
        valAxis = xa;
    } else {
        dx = function(di) {
            var pos = di.pos + t.bPos - xval;
            return Fx.inbox(pos - boxDelta, pos + boxDelta);
        };
        dy = function(di) {
            return Fx.inbox(di.min - yval, di.max - yval);
        };
        posLetter = 'x';
        posAxis = xa;
        valLetter = 'y';
        valAxis = ya;
    }

    distfn = Fx.getDistanceFunction(hovermode, dx, dy);
    Fx.getClosest(cd, distfn, pointData);

    // skip the rest (for this trace) if we didn't find a close point
    if(pointData.index === false) return;

    // create the item(s) in closedata for this point

    // the closest data point
    var di = cd[pointData.index],
        lc = trace.line.color,
        mc = (trace.marker || {}).color;
    if(Color.opacity(lc) && trace.line.width) pointData.color = lc;
    else if(Color.opacity(mc) && trace.boxpoints) pointData.color = mc;
    else pointData.color = trace.fillcolor;

    pointData[posLetter + '0'] = posAxis.c2p(di.pos + t.bPos - t.bdPos, true);
    pointData[posLetter + '1'] = posAxis.c2p(di.pos + t.bPos + t.bdPos, true);

    Axes.tickText(posAxis, posAxis.c2l(di.pos), 'hover').text;
    pointData[posLetter + 'LabelVal'] = di.pos;

    // box plots: each "point" gets many labels
    var usedVals = {},
        attrs = ['med', 'min', 'q1', 'q3', 'max'],
        attr,
        pointData2;
    if(trace.boxmean) attrs.push('mean');
    if(trace.boxpoints) [].push.apply(attrs, ['lf', 'uf']);

    for(var i = 0; i < attrs.length; i++) {
        attr = attrs[i];

        if(!(attr in di) || (di[attr] in usedVals)) continue;
        usedVals[di[attr]] = true;

        // copy out to a new object for each value to label
        val = valAxis.c2p(di[attr], true);
        pointData2 = Lib.extendFlat({}, pointData);
        pointData2[valLetter + '0'] = pointData2[valLetter + '1'] = val;
        pointData2[valLetter + 'LabelVal'] = di[attr];
        pointData2.attr = attr;

        if(attr === 'mean' && ('sd' in di) && trace.boxmean === 'sd') {
            pointData2[valLetter + 'err'] = di.sd;
        }
        pointData.name = ''; // only keep name on the first item (median)
        closeData.push(pointData2);
    }
    return closeData;
};

},{"../../components/color":510,"../../lib":610,"../../plots/cartesian/axes":642,"../../plots/cartesian/graph_interact":649}],743:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Box = {};

Box.attributes = require('./attributes');
Box.layoutAttributes = require('./layout_attributes');
Box.supplyDefaults = require('./defaults');
Box.supplyLayoutDefaults = require('./layout_defaults');
Box.calc = require('./calc');
Box.setPositions = require('./set_positions');
Box.plot = require('./plot');
Box.style = require('./style');
Box.hoverPoints = require('./hover');

Box.moduleType = 'trace';
Box.name = 'box';
Box.basePlotModule = require('../../plots/cartesian');
Box.categories = ['cartesian', 'symbols', 'oriented', 'box', 'showLegend'];
Box.meta = {
    description: [
        'In vertical (horizontal) box plots,',
        'statistics are computed using `y` (`x`) values.',
        'By supplying an `x` (`y`) array, one box per distinct x (y) value',
        'is drawn',
        'If no `x` (`y`) {array} is provided, a single box is drawn.',
        'That box position is then positioned with',
        'with `name` or with `x0` (`y0`) if provided.',
        'Each box spans from quartile 1 (Q1) to quartile 3 (Q3).',
        'The second quartile (Q2) is marked by a line inside the box.',
        'By default, the whiskers correspond to the box\' edges',
        '+/- 1.5 times the interquartile range (IQR = Q3-Q1),',
        'see *boxpoints* for other options.'
    ].join(' ')
};

module.exports = Box;

},{"../../plots/cartesian":650,"./attributes":739,"./calc":740,"./defaults":741,"./hover":742,"./layout_attributes":744,"./layout_defaults":745,"./plot":746,"./set_positions":747,"./style":748}],744:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


module.exports = {
    boxmode: {
        valType: 'enumerated',
        values: ['group', 'overlay'],
        dflt: 'overlay',
        role: 'info',
        description: [
            'Determines how boxes at the same location coordinate',
            'are displayed on the graph.',
            'If *group*, the boxes are plotted next to one another',
            'centered around the shared location.',
            'If *overlay*, the boxes are plotted over one another,',
            'you might need to set *opacity* to see them multiple boxes.'
        ].join(' ')
    },
    boxgap: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 0.3,
        role: 'style',
        description: [
            'Sets the gap (in plot fraction) between boxes of',
            'adjacent location coordinates.'
        ].join(' ')
    },
    boxgroupgap: {
        valType: 'number',
        min: 0,
        max: 1,
        dflt: 0.3,
        role: 'style',
        description: [
            'Sets the gap (in plot fraction) between boxes of',
            'the same location coordinate.'
        ].join(' ')
    }
};

},{}],745:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var layoutAttributes = require('./layout_attributes');

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut, fullData) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }

    var hasBoxes;
    for(var i = 0; i < fullData.length; i++) {
        if(Registry.traceIs(fullData[i], 'box')) {
            hasBoxes = true;
            break;
        }
    }
    if(!hasBoxes) return;

    coerce('boxmode');
    coerce('boxgap');
    coerce('boxgroupgap');
};

},{"../../lib":610,"../../registry":717,"./layout_attributes":744}],746:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var Lib = require('../../lib');
var Drawing = require('../../components/drawing');


// repeatable pseudorandom generator
var randSeed = 2000000000;

function seed() {
    randSeed = 2000000000;
}

function rand() {
    var lastVal = randSeed;
    randSeed = (69069 * randSeed + 1) % 4294967296;
    // don't let consecutive vals be too close together
    // gets away from really trying to be random, in favor of better local uniformity
    if(Math.abs(randSeed - lastVal) < 429496729) return rand();
    return randSeed / 4294967296;
}

// constants for dynamic jitter (ie less jitter for sparser points)
var JITTERCOUNT = 5, // points either side of this to include
    JITTERSPREAD = 0.01; // fraction of IQR to count as "dense"


module.exports = function plot(gd, plotinfo, cdbox) {
    var fullLayout = gd._fullLayout,
        xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        posAxis, valAxis;

    var boxtraces = plotinfo.plot.select('.boxlayer')
        .selectAll('g.trace.boxes')
            .data(cdbox)
      .enter().append('g')
        .attr('class', 'trace boxes');

    boxtraces.each(function(d) {
        var t = d[0].t,
            trace = d[0].trace,
            group = (fullLayout.boxmode === 'group' && gd.numboxes > 1),
            // box half width
            bdPos = t.dPos * (1 - fullLayout.boxgap) * (1 - fullLayout.boxgroupgap) / (group ? gd.numboxes : 1),
            // box center offset
            bPos = group ? 2 * t.dPos * (-0.5 + (t.boxnum + 0.5) / gd.numboxes) * (1 - fullLayout.boxgap) : 0,
            // whisker width
            wdPos = bdPos * trace.whiskerwidth;
        if(trace.visible !== true || t.emptybox) {
            d3.select(this).remove();
            return;
        }

        // set axis via orientation
        if(trace.orientation === 'h') {
            posAxis = ya;
            valAxis = xa;
        } else {
            posAxis = xa;
            valAxis = ya;
        }

        // save the box size and box position for use by hover
        t.bPos = bPos;
        t.bdPos = bdPos;

        // repeatable pseudorandom number generator
        seed();

        // boxes and whiskers
        d3.select(this).selectAll('path.box')
            .data(Lib.identity)
            .enter().append('path')
            .attr('class', 'box')
            .each(function(d) {
                var posc = posAxis.c2p(d.pos + bPos, true),
                    pos0 = posAxis.c2p(d.pos + bPos - bdPos, true),
                    pos1 = posAxis.c2p(d.pos + bPos + bdPos, true),
                    posw0 = posAxis.c2p(d.pos + bPos - wdPos, true),
                    posw1 = posAxis.c2p(d.pos + bPos + wdPos, true),
                    q1 = valAxis.c2p(d.q1, true),
                    q3 = valAxis.c2p(d.q3, true),
                    // make sure median isn't identical to either of the
                    // quartiles, so we can see it
                    m = Lib.constrain(valAxis.c2p(d.med, true),
                        Math.min(q1, q3) + 1, Math.max(q1, q3) - 1),
                    lf = valAxis.c2p(trace.boxpoints === false ? d.min : d.lf, true),
                    uf = valAxis.c2p(trace.boxpoints === false ? d.max : d.uf, true);
                if(trace.orientation === 'h') {
                    d3.select(this).attr('d',
                        'M' + m + ',' + pos0 + 'V' + pos1 + // median line
                        'M' + q1 + ',' + pos0 + 'V' + pos1 + 'H' + q3 + 'V' + pos0 + 'Z' + // box
                        'M' + q1 + ',' + posc + 'H' + lf + 'M' + q3 + ',' + posc + 'H' + uf + // whiskers
                        ((trace.whiskerwidth === 0) ? '' : // whisker caps
                            'M' + lf + ',' + posw0 + 'V' + posw1 + 'M' + uf + ',' + posw0 + 'V' + posw1));
                } else {
                    d3.select(this).attr('d',
                        'M' + pos0 + ',' + m + 'H' + pos1 + // median line
                        'M' + pos0 + ',' + q1 + 'H' + pos1 + 'V' + q3 + 'H' + pos0 + 'Z' + // box
                        'M' + posc + ',' + q1 + 'V' + lf + 'M' + posc + ',' + q3 + 'V' + uf + // whiskers
                        ((trace.whiskerwidth === 0) ? '' : // whisker caps
                            'M' + posw0 + ',' + lf + 'H' + posw1 + 'M' + posw0 + ',' + uf + 'H' + posw1));
                }
            });

        // draw points, if desired
        if(trace.boxpoints) {
            d3.select(this).selectAll('g.points')
                // since box plot points get an extra level of nesting, each
                // box needs the trace styling info
                .data(function(d) {
                    d.forEach(function(v) {
                        v.t = t;
                        v.trace = trace;
                    });
                    return d;
                })
                .enter().append('g')
                .attr('class', 'points')
              .selectAll('path')
                .data(function(d) {
                    var pts = (trace.boxpoints === 'all') ? d.val :
                            d.val.filter(function(v) { return (v < d.lf || v > d.uf); }),
                        // normally use IQR, but if this is 0 or too small, use max-min
                        typicalSpread = Math.max((d.max - d.min) / 10, d.q3 - d.q1),
                        minSpread = typicalSpread * 1e-9,
                        spreadLimit = typicalSpread * JITTERSPREAD,
                        jitterFactors = [],
                        maxJitterFactor = 0,
                        i,
                        i0, i1,
                        pmin,
                        pmax,
                        jitterFactor,
                        newJitter;

                    // dynamic jitter
                    if(trace.jitter) {
                        if(typicalSpread === 0) {
                            // edge case of no spread at all: fall back to max jitter
                            maxJitterFactor = 1;
                            jitterFactors = new Array(pts.length);
                            for(i = 0; i < pts.length; i++) {
                                jitterFactors[i] = 1;
                            }
                        }
                        else {
                            for(i = 0; i < pts.length; i++) {
                                i0 = Math.max(0, i - JITTERCOUNT);
                                pmin = pts[i0];
                                i1 = Math.min(pts.length - 1, i + JITTERCOUNT);
                                pmax = pts[i1];

                                if(trace.boxpoints !== 'all') {
                                    if(pts[i] < d.lf) pmax = Math.min(pmax, d.lf);
                                    else pmin = Math.max(pmin, d.uf);
                                }

                                jitterFactor = Math.sqrt(spreadLimit * (i1 - i0) / (pmax - pmin + minSpread)) || 0;
                                jitterFactor = Lib.constrain(Math.abs(jitterFactor), 0, 1);

                                jitterFactors.push(jitterFactor);
                                maxJitterFactor = Math.max(jitterFactor, maxJitterFactor);
                            }
                        }
                        newJitter = trace.jitter * 2 / maxJitterFactor;
                    }

                    return pts.map(function(v, i) {
                        var posOffset = trace.pointpos,
                            p;
                        if(trace.jitter) {
                            posOffset += newJitter * jitterFactors[i] * (rand() - 0.5);
                        }

                        if(trace.orientation === 'h') {
                            p = {
                                y: d.pos + posOffset * bdPos + bPos,
                                x: v
                            };
                        } else {
                            p = {
                                x: d.pos + posOffset * bdPos + bPos,
                                y: v
                            };
                        }

                        // tag suspected outliers
                        if(trace.boxpoints === 'suspectedoutliers' && v < d.uo && v > d.lo) {
                            p.so = true;
                        }
                        return p;
                    });
                })
                .enter().append('path')
                .call(Drawing.translatePoints, xa, ya);
        }
        // draw mean (and stdev diamond) if desired
        if(trace.boxmean) {
            d3.select(this).selectAll('path.mean')
                .data(Lib.identity)
                .enter().append('path')
                .attr('class', 'mean')
                .style('fill', 'none')
                .each(function(d) {
                    var posc = posAxis.c2p(d.pos + bPos, true),
                        pos0 = posAxis.c2p(d.pos + bPos - bdPos, true),
                        pos1 = posAxis.c2p(d.pos + bPos + bdPos, true),
                        m = valAxis.c2p(d.mean, true),
                        sl = valAxis.c2p(d.mean - d.sd, true),
                        sh = valAxis.c2p(d.mean + d.sd, true);
                    if(trace.orientation === 'h') {
                        d3.select(this).attr('d',
                            'M' + m + ',' + pos0 + 'V' + pos1 +
                            ((trace.boxmean !== 'sd') ? '' :
                                'm0,0L' + sl + ',' + posc + 'L' + m + ',' + pos0 + 'L' + sh + ',' + posc + 'Z'));
                    }
                    else {
                        d3.select(this).attr('d',
                            'M' + pos0 + ',' + m + 'H' + pos1 +
                            ((trace.boxmean !== 'sd') ? '' :
                                'm0,0L' + posc + ',' + sl + 'L' + pos0 + ',' + m + 'L' + posc + ',' + sh + 'Z'));
                    }
                });
        }
    });
};

},{"../../components/drawing":533,"../../lib":610,"d3":86}],747:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');
var Axes = require('../../plots/cartesian/axes');
var Lib = require('../../lib');


module.exports = function setPositions(gd, plotinfo) {
    var fullLayout = gd._fullLayout,
        xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        orientations = ['v', 'h'];
    var posAxis, i, j, k;

    for(i = 0; i < orientations.length; ++i) {
        var orientation = orientations[i],
            boxlist = [],
            boxpointlist = [],
            minPad = 0,
            maxPad = 0,
            cd,
            t,
            trace;

        // set axis via orientation
        if(orientation === 'h') posAxis = ya;
        else posAxis = xa;

        // make list of boxes
        for(j = 0; j < gd.calcdata.length; ++j) {
            cd = gd.calcdata[j];
            t = cd[0].t;
            trace = cd[0].trace;

            if(trace.visible === true && Registry.traceIs(trace, 'box') &&
                    !t.emptybox &&
                    trace.orientation === orientation &&
                    trace.xaxis === xa._id &&
                    trace.yaxis === ya._id) {
                boxlist.push(j);
                if(trace.boxpoints !== false) {
                    minPad = Math.max(minPad, trace.jitter - trace.pointpos - 1);
                    maxPad = Math.max(maxPad, trace.jitter + trace.pointpos - 1);
                }
            }
        }

        // make list of box points
        for(j = 0; j < boxlist.length; j++) {
            cd = gd.calcdata[boxlist[j]];
            for(k = 0; k < cd.length; k++) boxpointlist.push(cd[k].pos);
        }
        if(!boxpointlist.length) continue;

        // box plots - update dPos based on multiple traces
        // and then use for posAxis autorange

        var boxdv = Lib.distinctVals(boxpointlist),
            dPos = boxdv.minDiff / 2;

        // if there's no duplication of x points,
        // disable 'group' mode by setting numboxes=1
        if(boxpointlist.length === boxdv.vals.length) gd.numboxes = 1;

        // check for forced minimum dtick
        Axes.minDtick(posAxis, boxdv.minDiff, boxdv.vals[0], true);

        // set the width of all boxes
        for(i = 0; i < boxlist.length; i++) {
            var boxListIndex = boxlist[i];
            gd.calcdata[boxListIndex][0].t.dPos = dPos;
        }

        // autoscale the x axis - including space for points if they're off the side
        // TODO: this will overdo it if the outermost boxes don't have
        // their points as far out as the other boxes
        var padfactor = (1 - fullLayout.boxgap) * (1 - fullLayout.boxgroupgap) *
                dPos / gd.numboxes;
        Axes.expand(posAxis, boxdv.vals, {
            vpadminus: dPos + minPad * padfactor,
            vpadplus: dPos + maxPad * padfactor
        });
    }
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"../../registry":717}],748:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var Color = require('../../components/color');
var Drawing = require('../../components/drawing');


module.exports = function style(gd) {
    var s = d3.select(gd).selectAll('g.trace.boxes');

    s.style('opacity', function(d) { return d[0].trace.opacity; })
        .each(function(d) {
            var trace = d[0].trace,
                lineWidth = trace.line.width;
            d3.select(this).selectAll('path.box')
                .style('stroke-width', lineWidth + 'px')
                .call(Color.stroke, trace.line.color)
                .call(Color.fill, trace.fillcolor);
            d3.select(this).selectAll('path.mean')
                .style({
                    'stroke-width': lineWidth,
                    'stroke-dasharray': (2 * lineWidth) + 'px,' + lineWidth + 'px'
                })
                .call(Color.stroke, trace.line.color);
            d3.select(this).selectAll('g.points path')
                .call(Drawing.pointStyle, trace);
        });
};

},{"../../components/color":510,"../../components/drawing":533,"d3":86}],749:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var OHLCattrs = require('../ohlc/attributes');
var boxAttrs = require('../box/attributes');

var directionAttrs = {
    name: OHLCattrs.increasing.name,
    showlegend: OHLCattrs.increasing.showlegend,

    line: {
        color: Lib.extendFlat({}, boxAttrs.line.color),
        width: Lib.extendFlat({}, boxAttrs.line.width)
    },

    fillcolor: Lib.extendFlat({}, boxAttrs.fillcolor),
};

module.exports = {
    x: OHLCattrs.x,
    open: OHLCattrs.open,
    high: OHLCattrs.high,
    low: OHLCattrs.low,
    close: OHLCattrs.close,

    line: {
        width: Lib.extendFlat({}, boxAttrs.line.width, {
            description: [
                boxAttrs.line.width.description,
                'Note that this style setting can also be set per',
                'direction via `increasing.line.width` and',
                '`decreasing.line.width`.'
            ].join(' ')
        })
    },

    increasing: Lib.extendDeep({}, directionAttrs, {
        line: { color: { dflt: OHLCattrs.increasing.line.color.dflt } }
    }),

    decreasing: Lib.extendDeep({}, directionAttrs, {
        line: { color: { dflt: OHLCattrs.decreasing.line.color.dflt } }
    }),

    text: OHLCattrs.text,
    whiskerwidth: Lib.extendFlat({}, boxAttrs.whiskerwidth, { dflt: 0 })
};

},{"../../lib":610,"../box/attributes":739,"../ohlc/attributes":811}],750:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var handleOHLC = require('../ohlc/ohlc_defaults');
var handleDirectionDefaults = require('../ohlc/direction_defaults');
var helpers = require('../ohlc/helpers');
var attributes = require('./attributes');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    helpers.pushDummyTransformOpts(traceIn, traceOut);

    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleOHLC(traceIn, traceOut, coerce, layout);
    if(len === 0) {
        traceOut.visible = false;
        return;
    }

    coerce('line.width');

    handleDirection(traceIn, traceOut, coerce, 'increasing');
    handleDirection(traceIn, traceOut, coerce, 'decreasing');

    coerce('text');
    coerce('whiskerwidth');
};

function handleDirection(traceIn, traceOut, coerce, direction) {
    handleDirectionDefaults(traceIn, traceOut, coerce, direction);

    coerce(direction + '.line.color');
    coerce(direction + '.line.width', traceOut.line.width);
    coerce(direction + '.fillcolor');
}

},{"../../lib":610,"../ohlc/direction_defaults":813,"../ohlc/helpers":814,"../ohlc/ohlc_defaults":816,"./attributes":749}],751:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var register = require('../../plot_api/register');

module.exports = {
    moduleType: 'trace',
    name: 'candlestick',
    basePlotModule: require('../../plots/cartesian'),
    categories: ['cartesian', 'showLegend'],
    meta: {
        description: [
            'The candlestick is a style of financial chart describing',
            'open, high, low and close for a given `x` coordinate (most likely time).',

            'The boxes represent the spread between the `open` and `close` values and',
            'the lines represent the spread between the `low` and `high` values',

            'Sample points where the close value is higher (lower) then the open',
            'value are called increasing (decreasing).',

            'By default, increasing candles are drawn in green whereas',
            'decreasing are drawn in red.'
        ].join(' ')
    },

    attributes: require('./attributes'),
    supplyDefaults: require('./defaults'),
};

register(require('../box'));
register(require('./transform'));

},{"../../plot_api/register":632,"../../plots/cartesian":650,"../box":743,"./attributes":749,"./defaults":750,"./transform":752}],752:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var helpers = require('../ohlc/helpers');

exports.moduleType = 'transform';

exports.name = 'candlestick';

exports.attributes = {};

exports.supplyDefaults = function(transformIn, traceOut, layout, traceIn) {
    helpers.clearEphemeralTransformOpts(traceIn);
    helpers.copyOHLC(transformIn, traceOut);

    return transformIn;
};

exports.transform = function transform(dataIn, state) {
    var dataOut = [];

    for(var i = 0; i < dataIn.length; i++) {
        var traceIn = dataIn[i];

        if(traceIn.type !== 'candlestick') {
            dataOut.push(traceIn);
            continue;
        }

        dataOut.push(
            makeTrace(traceIn, state, 'increasing'),
            makeTrace(traceIn, state, 'decreasing')
        );
    }

    helpers.addRangeSlider(state.layout);

    return dataOut;
};

function makeTrace(traceIn, state, direction) {
    var traceOut = {
        type: 'box',
        boxpoints: false,

        visible: traceIn.visible,
        hoverinfo: traceIn.hoverinfo,
        opacity: traceIn.opacity,
        xaxis: traceIn.xaxis,
        yaxis: traceIn.yaxis,

        transforms: helpers.makeTransform(traceIn, state, direction)
    };

    // the rest of below may not have been coerced

    var directionOpts = traceIn[direction];

    if(directionOpts) {
        Lib.extendFlat(traceOut, {

            // to make autotype catch date axes soon!!
            x: traceIn.x || [0],
            xcalendar: traceIn.xcalendar,

            // concat low and high to get correct autorange
            y: [].concat(traceIn.low).concat(traceIn.high),

            whiskerwidth: traceIn.whiskerwidth,
            text: traceIn.text,

            name: directionOpts.name,
            showlegend: directionOpts.showlegend,
            line: directionOpts.line,
            fillcolor: directionOpts.fillcolor
        });
    }

    return traceOut;
}

exports.calcTransform = function calcTransform(gd, trace, opts) {
    var direction = opts.direction,
        filterFn = helpers.getFilterFn(direction);

    var open = trace.open,
        high = trace.high,
        low = trace.low,
        close = trace.close;

    var len = open.length,
        x = [],
        y = [];

    var appendX = trace._fullInput.x ?
        function(i) {
            var v = trace.x[i];
            x.push(v, v, v, v, v, v);
        } :
        function(i) {
            x.push(i, i, i, i, i, i);
        };

    var appendY = function(o, h, l, c) {
        y.push(l, o, c, c, c, h);
    };

    for(var i = 0; i < len; i++) {
        if(filterFn(open[i], close[i])) {
            appendX(i);
            appendY(open[i], high[i], low[i], close[i]);
        }
    }

    trace.x = x;
    trace.y = y;
};

},{"../../lib":610,"../ohlc/helpers":814}],753:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var ScatterGeoAttrs = require('../scattergeo/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var plotAttrs = require('../../plots/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

var ScatterGeoMarkerLineAttrs = ScatterGeoAttrs.marker.line;

module.exports = extendFlat({}, {
    locations: {
        valType: 'data_array',
        description: [
            'Sets the coordinates via location IDs or names.',
            'See `locationmode` for more info.'
        ].join(' ')
    },
    locationmode: ScatterGeoAttrs.locationmode,
    z: {
        valType: 'data_array',
        description: 'Sets the color values.'
    },
    text: {
        valType: 'data_array',
        description: 'Sets the text elements associated with each location.'
    },
    marker: {
        line: {
            color: ScatterGeoMarkerLineAttrs.color,
            width: ScatterGeoMarkerLineAttrs.width
        }
    },
    hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {
        flags: ['location', 'z', 'text', 'name']
    }),
},
    colorscaleAttrs,
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../../plots/attributes":640,"../scattergeo/attributes":863}],754:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var colorscaleCalc = require('../../components/colorscale/calc');


module.exports = function calc(gd, trace) {
    colorscaleCalc(trace, trace.z, '', 'z');
};

},{"../../components/colorscale/calc":516}],755:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var colorscaleDefaults = require('../../components/colorscale/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var locations = coerce('locations');

    var len;
    if(locations) len = locations.length;

    if(!locations || !len) {
        traceOut.visible = false;
        return;
    }

    var z = coerce('z');
    if(!Array.isArray(z)) {
        traceOut.visible = false;
        return;
    }

    if(z.length > len) traceOut.z = z.slice(0, len);

    coerce('locationmode');

    coerce('text');

    coerce('marker.line.color');
    coerce('marker.line.width');

    colorscaleDefaults(
        traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'}
    );

    coerce('hoverinfo', (layout._dataLength === 1) ? 'location+z+text' : undefined);
};

},{"../../components/colorscale/defaults":519,"../../lib":610,"./attributes":753}],756:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Choropleth = {};

Choropleth.attributes = require('./attributes');
Choropleth.supplyDefaults = require('./defaults');
Choropleth.colorbar = require('../heatmap/colorbar');
Choropleth.calc = require('./calc');
Choropleth.plot = require('./plot').plot;

// add dummy hover handler to skip Fx.hover w/o warnings
Choropleth.hoverPoints = function() {};

Choropleth.moduleType = 'trace';
Choropleth.name = 'choropleth';
Choropleth.basePlotModule = require('../../plots/geo');
Choropleth.categories = ['geo', 'noOpacity'];
Choropleth.meta = {
    description: [
        'The data that describes the choropleth value-to-color mapping',
        'is set in `z`.',
        'The geographic locations corresponding to each value in `z`',
        'are set in `locations`.'
    ].join(' ')
};

module.exports = Choropleth;

},{"../../plots/geo":666,"../heatmap/colorbar":774,"./attributes":753,"./calc":754,"./defaults":755,"./plot":757}],757:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Axes = require('../../plots/cartesian/axes');
var Fx = require('../../plots/cartesian/graph_interact');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var Colorscale = require('../../components/colorscale');

var getTopojsonFeatures = require('../../lib/topojson_utils').getTopojsonFeatures;
var locationToFeature = require('../../lib/geo_location_utils').locationToFeature;
var arrayToCalcItem = require('../../lib/array_to_calc_item');

var constants = require('../../plots/geo/constants');
var attributes = require('./attributes');

var plotChoropleth = module.exports = {};


plotChoropleth.calcGeoJSON = function(trace, topojson) {
    var cdi = [],
        locations = trace.locations,
        len = locations.length,
        features = getTopojsonFeatures(trace, topojson),
        markerLine = (trace.marker || {}).line || {};

    var feature;

    for(var i = 0; i < len; i++) {
        feature = locationToFeature(trace.locationmode, locations[i], features);

        if(!feature) continue;  // filter the blank features here

        // 'data_array' attributes
        feature.z = trace.z[i];
        if(trace.text !== undefined) feature.tx = trace.text[i];

        // 'arrayOk' attributes
        arrayToCalcItem(markerLine.color, feature, 'mlc', i);
        arrayToCalcItem(markerLine.width, feature, 'mlw', i);

        cdi.push(feature);
    }

    if(cdi.length > 0) cdi[0].trace = trace;

    return cdi;
};

plotChoropleth.plot = function(geo, calcData, geoLayout) {

    function keyFunc(d) { return d[0].trace.uid; }

    var framework = geo.framework,
        gChoropleth = framework.select('g.choroplethlayer'),
        gBaseLayer = framework.select('g.baselayer'),
        gBaseLayerOverChoropleth = framework.select('g.baselayeroverchoropleth'),
        baseLayersOverChoropleth = constants.baseLayersOverChoropleth,
        layerName;

    var gChoroplethTraces = gChoropleth
        .selectAll('g.trace.choropleth')
        .data(calcData, keyFunc);

    gChoroplethTraces.enter().append('g')
        .attr('class', 'trace choropleth');

    gChoroplethTraces.exit().remove();

    gChoroplethTraces.each(function(calcTrace) {
        var trace = calcTrace[0].trace,
            cdi = plotChoropleth.calcGeoJSON(trace, geo.topojson),
            cleanHoverLabelsFunc = makeCleanHoverLabelsFunc(geo, trace),
            eventDataFunc = makeEventDataFunc(trace);

        // keep ref to event data in this scope for plotly_unhover
        var eventData = null;

        function handleMouseOver(pt, ptIndex) {
            if(!geo.showHover) return;

            var xy = geo.projection(pt.properties.ct);
            cleanHoverLabelsFunc(pt);

            Fx.loneHover({
                x: xy[0],
                y: xy[1],
                name: pt.nameLabel,
                text: pt.textLabel
            }, {
                container: geo.hoverContainer.node()
            });

            eventData = eventDataFunc(pt, ptIndex);

            geo.graphDiv.emit('plotly_hover', eventData);
        }

        function handleClick(pt, ptIndex) {
            geo.graphDiv.emit('plotly_click', eventDataFunc(pt, ptIndex));
        }

        var paths = d3.select(this).selectAll('path.choroplethlocation')
                .data(cdi);

        paths.enter().append('path')
            .classed('choroplethlocation', true)
            .on('mouseover', handleMouseOver)
            .on('click', handleClick)
            .on('mouseout', function() {
                Fx.loneUnhover(geo.hoverContainer);

                geo.graphDiv.emit('plotly_unhover', eventData);
            })
            .on('mousedown', function() {
                // to simulate the 'zoomon' event
                Fx.loneUnhover(geo.hoverContainer);
            })
            .on('mouseup', handleMouseOver);  // ~ 'zoomend'

        paths.exit().remove();
    });

    // some baselayers are drawn over choropleth
    gBaseLayerOverChoropleth.selectAll('*').remove();

    for(var i = 0; i < baseLayersOverChoropleth.length; i++) {
        layerName = baseLayersOverChoropleth[i];
        gBaseLayer.select('g.' + layerName).remove();
        geo.drawTopo(gBaseLayerOverChoropleth, layerName, geoLayout);
        geo.styleLayer(gBaseLayerOverChoropleth, layerName, geoLayout);
    }

    plotChoropleth.style(geo);
};

plotChoropleth.style = function(geo) {
    geo.framework.selectAll('g.trace.choropleth')
        .each(function(calcTrace) {
            var trace = calcTrace[0].trace,
                s = d3.select(this),
                marker = trace.marker || {},
                markerLine = marker.line || {};

            var sclFunc = Colorscale.makeColorScaleFunc(
                Colorscale.extractScale(
                    trace.colorscale,
                    trace.zmin,
                    trace.zmax
                )
            );

            s.selectAll('path.choroplethlocation')
                .each(function(pt) {
                    d3.select(this)
                        .attr('fill', function(pt) { return sclFunc(pt.z); })
                        .call(Color.stroke, pt.mlc || markerLine.color)
                        .call(Drawing.dashLine, '', pt.mlw || markerLine.width);
                });
        });
};

function makeCleanHoverLabelsFunc(geo, trace) {
    var hoverinfo = trace.hoverinfo;

    if(hoverinfo === 'none' || hoverinfo === 'skip') {
        return function cleanHoverLabelsFunc(pt) {
            delete pt.nameLabel;
            delete pt.textLabel;
        };
    }

    var hoverinfoParts = (hoverinfo === 'all') ?
            attributes.hoverinfo.flags :
            hoverinfo.split('+');

    var hasName = (hoverinfoParts.indexOf('name') !== -1),
        hasLocation = (hoverinfoParts.indexOf('location') !== -1),
        hasZ = (hoverinfoParts.indexOf('z') !== -1),
        hasText = (hoverinfoParts.indexOf('text') !== -1),
        hasIdAsNameLabel = !hasName && hasLocation;

    function formatter(val) {
        var axis = geo.mockAxis;
        return Axes.tickText(axis, axis.c2l(val), 'hover').text;
    }

    return function cleanHoverLabelsFunc(pt) {
        // put location id in name label container
        // if name isn't part of hoverinfo
        var thisText = [];

        if(hasIdAsNameLabel) pt.nameLabel = pt.id;
        else {
            if(hasName) pt.nameLabel = trace.name;
            if(hasLocation) thisText.push(pt.id);
        }

        if(hasZ) thisText.push(formatter(pt.z));
        if(hasText) thisText.push(pt.tx);

        pt.textLabel = thisText.join('<br>');
    };
}

function makeEventDataFunc(trace) {
    return function(pt, ptIndex) {
        return {points: [{
            data: trace._input,
            fullData: trace,
            curveNumber: trace.index,
            pointNumber: ptIndex,
            location: pt.id,
            z: pt.z
        }]};
    };
}

},{"../../components/color":510,"../../components/colorscale":524,"../../components/drawing":533,"../../lib/array_to_calc_item":598,"../../lib/geo_location_utils":606,"../../lib/topojson_utils":626,"../../plots/cartesian/axes":642,"../../plots/cartesian/graph_interact":649,"../../plots/geo/constants":664,"./attributes":753,"d3":86}],758:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var heatmapAttrs = require('../heatmap/attributes');
var scatterAttrs = require('../scatter/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var extendFlat = require('../../lib/extend').extendFlat;

var scatterLineAttrs = scatterAttrs.line;

module.exports = extendFlat({}, {
    z: heatmapAttrs.z,
    x: heatmapAttrs.x,
    x0: heatmapAttrs.x0,
    dx: heatmapAttrs.dx,
    y: heatmapAttrs.y,
    y0: heatmapAttrs.y0,
    dy: heatmapAttrs.dy,
    text: heatmapAttrs.text,
    transpose: heatmapAttrs.transpose,
    xtype: heatmapAttrs.xtype,
    ytype: heatmapAttrs.ytype,

    connectgaps: heatmapAttrs.connectgaps,

    autocontour: {
        valType: 'boolean',
        dflt: true,
        role: 'style',
        description: [
            'Determines whether or not the contour level attributes are',
            'picked by an algorithm.',
            'If *true*, the number of contour levels can be set in `ncontours`.',
            'If *false*, set the contour level attributes in `contours`.'
        ].join(' ')
    },
    ncontours: {
        valType: 'integer',
        dflt: 15,
        min: 1,
        role: 'style',
        description: [
            'Sets the maximum number of contour levels. The actual number',
            'of contours will be chosen automatically to be less than or',
            'equal to the value of `ncontours`.',
            'Has an effect only if `autocontour` is *true* or if',
            '`contours.size` is missing.'
        ].join(' ')
    },

    contours: {
        start: {
            valType: 'number',
            dflt: null,
            role: 'style',
            description: [
                'Sets the starting contour level value.',
                'Must be less than `contours.end`'
            ].join(' ')
        },
        end: {
            valType: 'number',
            dflt: null,
            role: 'style',
            description: [
                'Sets the end contour level value.',
                'Must be more than `contours.start`'
            ].join(' ')
        },
        size: {
            valType: 'number',
            dflt: null,
            min: 0,
            role: 'style',
            description: [
                'Sets the step between each contour level.',
                'Must be positive.'
            ].join(' ')
        },
        coloring: {
            valType: 'enumerated',
            values: ['fill', 'heatmap', 'lines', 'none'],
            dflt: 'fill',
            role: 'style',
            description: [
                'Determines the coloring method showing the contour values.',
                'If *fill*, coloring is done evenly between each contour level',
                'If *heatmap*, a heatmap gradient coloring is applied',
                'between each contour level.',
                'If *lines*, coloring is done on the contour lines.',
                'If *none*, no coloring is applied on this trace.'
            ].join(' ')
        },
        showlines: {
            valType: 'boolean',
            dflt: true,
            role: 'style',
            description: [
                'Determines whether or not the contour lines are drawn.',
                'Has only an effect if `contours.coloring` is set to *fill*.'
            ].join(' ')
        }
    },

    line: {
        color: extendFlat({}, scatterLineAttrs.color, {
            description: [
                'Sets the color of the contour level.',
                'Has no if `contours.coloring` is set to *lines*.'
            ].join(' ')
        }),
        width: scatterLineAttrs.width,
        dash: scatterLineAttrs.dash,
        smoothing: extendFlat({}, scatterLineAttrs.smoothing, {
            description: [
                'Sets the amount of smoothing for the contour lines,',
                'where *0* corresponds to no smoothing.'
            ].join(' ')
        })
    }
},
    colorscaleAttrs,
    { autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}) },
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../heatmap/attributes":771,"../scatter/attributes":834}],759:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Axes = require('../../plots/cartesian/axes');
var extendFlat = require('../../lib').extendFlat;
var heatmapCalc = require('../heatmap/calc');


// most is the same as heatmap calc, then adjust it
// though a few things inside heatmap calc still look for
// contour maps, because the makeBoundArray calls are too entangled
module.exports = function calc(gd, trace) {
    var cd = heatmapCalc(gd, trace),
        contours = trace.contours;

    // check if we need to auto-choose contour levels
    if(trace.autocontour !== false) {
        var dummyAx = autoContours(trace.zmin, trace.zmax, trace.ncontours);

        contours.size = dummyAx.dtick;

        contours.start = Axes.tickFirst(dummyAx);
        dummyAx.range.reverse();
        contours.end = Axes.tickFirst(dummyAx);

        if(contours.start === trace.zmin) contours.start += contours.size;
        if(contours.end === trace.zmax) contours.end -= contours.size;

        // if you set a small ncontours, *and* the ends are exactly on zmin/zmax
        // there's an edge case where start > end now. Make sure there's at least
        // one meaningful contour, put it midway between the crossed values
        if(contours.start > contours.end) {
            contours.start = contours.end = (contours.start + contours.end) / 2;
        }

        // copy auto-contour info back to the source data.
        trace._input.contours = extendFlat({}, contours);
    }
    else {
        // sanity checks on manually-supplied start/end/size
        var start = contours.start,
            end = contours.end,
            inputContours = trace._input.contours;

        if(start > end) {
            contours.start = inputContours.start = end;
            end = contours.end = inputContours.end = start;
            start = contours.start;
        }

        if(!(contours.size > 0)) {
            var sizeOut;
            if(start === end) sizeOut = 1;
            else sizeOut = autoContours(start, end, trace.ncontours).dtick;

            inputContours.size = contours.size = sizeOut;
        }
    }

    return cd;
};

/*
 * autoContours: make a dummy axis object with dtick we can use
 * as contours.size, and if needed we can use Axes.tickFirst
 * with this axis object to calculate the start and end too
 *
 * start: the value to start the contours at
 * end: the value to end at (must be > start)
 * ncontours: max number of contours to make, like roughDTick
 *
 * returns: an axis object
 */
function autoContours(start, end, ncontours) {
    var dummyAx = {
        type: 'linear',
        range: [start, end]
    };

    Axes.autoTicks(
        dummyAx,
        (end - start) / (ncontours || 15)
    );

    return dummyAx;
}

},{"../../lib":610,"../../plots/cartesian/axes":642,"../heatmap/calc":772}],760:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Plots = require('../../plots/plots');
var drawColorbar = require('../../components/colorbar/draw');

var makeColorMap = require('./make_color_map');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        cbId = 'cb' + trace.uid;

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    if(trace.showscale === false) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var cb = drawColorbar(gd, cbId);
    cd[0].t.cb = cb;

    var contours = trace.contours,
        line = trace.line,
        cs = contours.size || 1,
        coloring = contours.coloring;

    var colorMap = makeColorMap(trace, {isColorbar: true});

    if(coloring === 'heatmap') {
        cb.filllevels({
            start: trace.zmin,
            end: trace.zmax,
            size: (trace.zmax - trace.zmin) / 254
        });
    }

    cb.fillcolor((coloring === 'fill' || coloring === 'heatmap') ? colorMap : '')
        .line({
            color: coloring === 'lines' ? colorMap : line.color,
            width: contours.showlines !== false ? line.width : 0,
            dash: line.dash
        })
        .levels({
            start: contours.start,
            end: contours.end,
            size: cs
        })
        .options(trace.colorbar)();
};

},{"../../components/colorbar/draw":513,"../../plots/plots":702,"./make_color_map":766}],761:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

// some constants to help with marching squares algorithm
// where does the path start for each index?
module.exports.BOTTOMSTART = [1, 9, 13, 104, 713];
module.exports.TOPSTART = [4, 6, 7, 104, 713];
module.exports.LEFTSTART = [8, 12, 14, 208, 1114];
module.exports.RIGHTSTART = [2, 3, 11, 208, 1114];

// which way [dx,dy] do we leave a given index?
// saddles are already disambiguated
module.exports.NEWDELTA = [
    null, [-1, 0], [0, -1], [-1, 0],
    [1, 0], null, [0, -1], [-1, 0],
    [0, 1], [0, 1], null, [0, 1],
    [1, 0], [1, 0], [0, -1]
];

// for each saddle, the first index here is used
// for dx||dy<0, the second for dx||dy>0
module.exports.CHOOSESADDLE = {
    104: [4, 1],
    208: [2, 8],
    713: [7, 13],
    1114: [11, 14]
};

// after one index has been used for a saddle, which do we
// substitute to be used up later?
module.exports.SADDLEREMAINDER = {1: 4, 2: 8, 4: 1, 7: 13, 8: 2, 11: 14, 13: 7, 14: 11};

},{}],762:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var hasColumns = require('../heatmap/has_columns');
var handleXYZDefaults = require('../heatmap/xyz_defaults');
var handleStyleDefaults = require('../contour/style_defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYZDefaults(traceIn, traceOut, coerce, layout);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('connectgaps', hasColumns(traceOut));

    var contourStart = Lib.coerce2(traceIn, traceOut, attributes, 'contours.start'),
        contourEnd = Lib.coerce2(traceIn, traceOut, attributes, 'contours.end'),
        missingEnd = (contourStart === false) || (contourEnd === false),

        // normally we only need size if autocontour is off. But contour.calc
        // pushes its calculated contour size back to the input trace, so for
        // things like restyle that can call supplyDefaults without calc
        // after the initial draw, we can just reuse the previous calculation
        contourSize = coerce('contours.size'),
        autoContour;

    if(missingEnd) autoContour = traceOut.autocontour = true;
    else autoContour = coerce('autocontour', false);

    if(autoContour || !contourSize) coerce('ncontours');

    handleStyleDefaults(traceIn, traceOut, coerce, layout);
};

},{"../../lib":610,"../contour/style_defaults":770,"../heatmap/has_columns":778,"../heatmap/xyz_defaults":786,"./attributes":758}],763:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var constants = require('./constants');

module.exports = function findAllPaths(pathinfo) {
    var cnt,
        startLoc,
        i,
        pi,
        j;

    for(i = 0; i < pathinfo.length; i++) {
        pi = pathinfo[i];

        for(j = 0; j < pi.starts.length; j++) {
            startLoc = pi.starts[j];
            makePath(pi, startLoc, 'edge');
        }

        cnt = 0;
        while(Object.keys(pi.crossings).length && cnt < 10000) {
            cnt++;
            startLoc = Object.keys(pi.crossings)[0].split(',').map(Number);
            makePath(pi, startLoc);
        }
        if(cnt === 10000) Lib.log('Infinite loop in contour?');
    }
};

function equalPts(pt1, pt2) {
    return Math.abs(pt1[0] - pt2[0]) < 0.01 &&
           Math.abs(pt1[1] - pt2[1]) < 0.01;
}

function ptDist(pt1, pt2) {
    var dx = pt1[0] - pt2[0],
        dy = pt1[1] - pt2[1];
    return Math.sqrt(dx * dx + dy * dy);
}

function makePath(pi, loc, edgeflag) {
    var startLocStr = loc.join(','),
        locStr = startLocStr,
        mi = pi.crossings[locStr],
        marchStep = startStep(mi, edgeflag, loc),
        // start by going backward a half step and finding the crossing point
        pts = [getInterpPx(pi, loc, [-marchStep[0], -marchStep[1]])],
        startStepStr = marchStep.join(','),
        m = pi.z.length,
        n = pi.z[0].length,
        cnt;

    // now follow the path
    for(cnt = 0; cnt < 10000; cnt++) { // just to avoid infinite loops
        if(mi > 20) {
            mi = constants.CHOOSESADDLE[mi][(marchStep[0] || marchStep[1]) < 0 ? 0 : 1];
            pi.crossings[locStr] = constants.SADDLEREMAINDER[mi];
        }
        else {
            delete pi.crossings[locStr];
        }

        marchStep = constants.NEWDELTA[mi];
        if(!marchStep) {
            Lib.log('Found bad marching index:', mi, loc, pi.level);
            break;
        }

        // find the crossing a half step forward, and then take the full step
        pts.push(getInterpPx(pi, loc, marchStep));
        loc[0] += marchStep[0];
        loc[1] += marchStep[1];

        // don't include the same point multiple times
        if(equalPts(pts[pts.length - 1], pts[pts.length - 2])) pts.pop();
        locStr = loc.join(',');

        // have we completed a loop, or reached an edge?
        if((locStr === startLocStr && marchStep.join(',') === startStepStr) ||
            (edgeflag && (
                (marchStep[0] && (loc[0] < 0 || loc[0] > n - 2)) ||
                (marchStep[1] && (loc[1] < 0 || loc[1] > m - 2))))) {
            break;
        }
        mi = pi.crossings[locStr];
    }

    if(cnt === 10000) {
        Lib.log('Infinite loop in contour?');
    }
    var closedpath = equalPts(pts[0], pts[pts.length - 1]),
        totaldist = 0,
        distThresholdFactor = 0.2 * pi.smoothing,
        alldists = [],
        cropstart = 0,
        distgroup,
        cnt2,
        cnt3,
        newpt,
        ptcnt,
        ptavg,
        thisdist;

    // check for points that are too close together (<1/5 the average dist,
    // less if less smoothed) and just take the center (or avg of center 2)
    // this cuts down on funny behavior when a point is very close to a contour level
    for(cnt = 1; cnt < pts.length; cnt++) {
        thisdist = ptDist(pts[cnt], pts[cnt - 1]);
        totaldist += thisdist;
        alldists.push(thisdist);
    }

    var distThreshold = totaldist / alldists.length * distThresholdFactor;

    function getpt(i) { return pts[i % pts.length]; }

    for(cnt = pts.length - 2; cnt >= cropstart; cnt--) {
        distgroup = alldists[cnt];
        if(distgroup < distThreshold) {
            cnt3 = 0;
            for(cnt2 = cnt - 1; cnt2 >= cropstart; cnt2--) {
                if(distgroup + alldists[cnt2] < distThreshold) {
                    distgroup += alldists[cnt2];
                }
                else break;
            }

            // closed path with close points wrapping around the boundary?
            if(closedpath && cnt === pts.length - 2) {
                for(cnt3 = 0; cnt3 < cnt2; cnt3++) {
                    if(distgroup + alldists[cnt3] < distThreshold) {
                        distgroup += alldists[cnt3];
                    }
                    else break;
                }
            }
            ptcnt = cnt - cnt2 + cnt3 + 1;
            ptavg = Math.floor((cnt + cnt2 + cnt3 + 2) / 2);

            // either endpoint included: keep the endpoint
            if(!closedpath && cnt === pts.length - 2) newpt = pts[pts.length - 1];
            else if(!closedpath && cnt2 === -1) newpt = pts[0];

            // odd # of points - just take the central one
            else if(ptcnt % 2) newpt = getpt(ptavg);

            // even # of pts - average central two
            else {
                newpt = [(getpt(ptavg)[0] + getpt(ptavg + 1)[0]) / 2,
                    (getpt(ptavg)[1] + getpt(ptavg + 1)[1]) / 2];
            }

            pts.splice(cnt2 + 1, cnt - cnt2 + 1, newpt);
            cnt = cnt2 + 1;
            if(cnt3) cropstart = cnt3;
            if(closedpath) {
                if(cnt === pts.length - 2) pts[cnt3] = pts[pts.length - 1];
                else if(cnt === 0) pts[pts.length - 1] = pts[0];
            }
        }
    }
    pts.splice(0, cropstart);

    // don't return single-point paths (ie all points were the same
    // so they got deleted?)
    if(pts.length < 2) return;
    else if(closedpath) {
        pts.pop();
        pi.paths.push(pts);
    }
    else {
        if(!edgeflag) {
            Lib.log('Unclosed interior contour?',
                pi.level, startLocStr, pts.join('L'));
        }

        // edge path - does it start where an existing edge path ends, or vice versa?
        var merged = false;
        pi.edgepaths.forEach(function(edgepath, edgei) {
            if(!merged && equalPts(edgepath[0], pts[pts.length - 1])) {
                pts.pop();
                merged = true;

                // now does it ALSO meet the end of another (or the same) path?
                var doublemerged = false;
                pi.edgepaths.forEach(function(edgepath2, edgei2) {
                    if(!doublemerged && equalPts(
                            edgepath2[edgepath2.length - 1], pts[0])) {
                        doublemerged = true;
                        pts.splice(0, 1);
                        pi.edgepaths.splice(edgei, 1);
                        if(edgei2 === edgei) {
                            // the path is now closed
                            pi.paths.push(pts.concat(edgepath2));
                        }
                        else {
                            pi.edgepaths[edgei2] =
                                pi.edgepaths[edgei2].concat(pts, edgepath2);
                        }
                    }
                });
                if(!doublemerged) {
                    pi.edgepaths[edgei] = pts.concat(edgepath);
                }
            }
        });
        pi.edgepaths.forEach(function(edgepath, edgei) {
            if(!merged && equalPts(edgepath[edgepath.length - 1], pts[0])) {
                pts.splice(0, 1);
                pi.edgepaths[edgei] = edgepath.concat(pts);
                merged = true;
            }
        });

        if(!merged) pi.edgepaths.push(pts);
    }
}

// special function to get the marching step of the
// first point in the path (leading to loc)
function startStep(mi, edgeflag, loc) {
    var dx = 0,
        dy = 0;
    if(mi > 20 && edgeflag) {
        // these saddles start at +/- x
        if(mi === 208 || mi === 1114) {
            // if we're starting at the left side, we must be going right
            dx = loc[0] === 0 ? 1 : -1;
        }
        else {
            // if we're starting at the bottom, we must be going up
            dy = loc[1] === 0 ? 1 : -1;
        }
    }
    else if(constants.BOTTOMSTART.indexOf(mi) !== -1) dy = 1;
    else if(constants.LEFTSTART.indexOf(mi) !== -1) dx = 1;
    else if(constants.TOPSTART.indexOf(mi) !== -1) dy = -1;
    else dx = -1;
    return [dx, dy];
}

function getInterpPx(pi, loc, step) {
    var locx = loc[0] + Math.max(step[0], 0),
        locy = loc[1] + Math.max(step[1], 0),
        zxy = pi.z[locy][locx],
        xa = pi.xaxis,
        ya = pi.yaxis;

    if(step[1]) {
        var dx = (pi.level - zxy) / (pi.z[locy][locx + 1] - zxy);
        return [xa.c2p((1 - dx) * pi.x[locx] + dx * pi.x[locx + 1], true),
            ya.c2p(pi.y[locy], true)];
    }
    else {
        var dy = (pi.level - zxy) / (pi.z[locy + 1][locx] - zxy);
        return [xa.c2p(pi.x[locx], true),
            ya.c2p((1 - dy) * pi.y[locy] + dy * pi.y[locy + 1], true)];
    }
}

},{"../../lib":610,"./constants":761}],764:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var heatmapHoverPoints = require('../heatmap/hover');


module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
    return heatmapHoverPoints(pointData, xval, yval, hovermode, true);
};

},{"../heatmap/hover":779}],765:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Contour = {};

Contour.attributes = require('./attributes');
Contour.supplyDefaults = require('./defaults');
Contour.calc = require('./calc');
Contour.plot = require('./plot');
Contour.style = require('./style');
Contour.colorbar = require('./colorbar');
Contour.hoverPoints = require('./hover');

Contour.moduleType = 'trace';
Contour.name = 'contour';
Contour.basePlotModule = require('../../plots/cartesian');
Contour.categories = ['cartesian', '2dMap', 'contour'];
Contour.meta = {
    description: [
        'The data from which contour lines are computed is set in `z`.',
        'Data in `z` must be a {2D array} of numbers.',

        'Say that `z` has N rows and M columns, then by default,',
        'these N rows correspond to N y coordinates',
        '(set in `y` or auto-generated) and the M columns',
        'correspond to M x coordinates (set in `x` or auto-generated).',
        'By setting `transpose` to *true*, the above behavior is flipped.'
    ].join(' ')
};

module.exports = Contour;

},{"../../plots/cartesian":650,"./attributes":758,"./calc":759,"./colorbar":760,"./defaults":762,"./hover":764,"./plot":768,"./style":769}],766:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');
var Colorscale = require('../../components/colorscale');

module.exports = function makeColorMap(trace) {
    var contours = trace.contours,
        start = contours.start,
        end = contours.end,
        cs = contours.size || 1,
        nc = Math.floor((end + cs / 10 - start) / cs) + 1,
        extra = contours.coloring === 'lines' ? 0 : 1;

    var scl = trace.colorscale,
        len = scl.length;

    var domain = new Array(len),
        range = new Array(len);

    var si, i;

    if(contours.coloring === 'heatmap') {
        if(trace.zauto && trace.autocontour === false) {
            trace.zmin = start - cs / 2;
            trace.zmax = trace.zmin + nc * cs;
        }

        for(i = 0; i < len; i++) {
            si = scl[i];

            domain[i] = si[0] * (trace.zmax - trace.zmin) + trace.zmin;
            range[i] = si[1];
        }

        // do the contours extend beyond the colorscale?
        // if so, extend the colorscale with constants
        var zRange = d3.extent([trace.zmin, trace.zmax, contours.start,
                contours.start + cs * (nc - 1)]),
            zmin = zRange[trace.zmin < trace.zmax ? 0 : 1],
            zmax = zRange[trace.zmin < trace.zmax ? 1 : 0];

        if(zmin !== trace.zmin) {
            domain.splice(0, 0, zmin);
            range.splice(0, 0, Range[0]);
        }

        if(zmax !== trace.zmax) {
            domain.push(zmax);
            range.push(range[range.length - 1]);
        }
    }
    else {
        for(i = 0; i < len; i++) {
            si = scl[i];

            domain[i] = (si[0] * (nc + extra - 1) - (extra / 2)) * cs + start;
            range[i] = si[1];
        }
    }

    return Colorscale.makeColorScaleFunc({
        domain: domain,
        range: range,
    }, {
        noNumericCheck: true
    });
};

},{"../../components/colorscale":524,"d3":86}],767:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var constants = require('./constants');

// Calculate all the marching indices, for ALL levels at once.
// since we want to be exhaustive we'll check for contour crossings
// at every intersection, rather than just following a path
// TODO: shorten the inner loop to only the relevant levels
module.exports = function makeCrossings(pathinfo) {
    var z = pathinfo[0].z,
        m = z.length,
        n = z[0].length, // we already made sure z isn't ragged in interp2d
        twoWide = m === 2 || n === 2,
        xi,
        yi,
        startIndices,
        ystartIndices,
        label,
        corners,
        mi,
        pi,
        i;

    for(yi = 0; yi < m - 1; yi++) {
        ystartIndices = [];
        if(yi === 0) ystartIndices = ystartIndices.concat(constants.BOTTOMSTART);
        if(yi === m - 2) ystartIndices = ystartIndices.concat(constants.TOPSTART);

        for(xi = 0; xi < n - 1; xi++) {
            startIndices = ystartIndices.slice();
            if(xi === 0) startIndices = startIndices.concat(constants.LEFTSTART);
            if(xi === n - 2) startIndices = startIndices.concat(constants.RIGHTSTART);

            label = xi + ',' + yi;
            corners = [[z[yi][xi], z[yi][xi + 1]],
                       [z[yi + 1][xi], z[yi + 1][xi + 1]]];
            for(i = 0; i < pathinfo.length; i++) {
                pi = pathinfo[i];
                mi = getMarchingIndex(pi.level, corners);
                if(!mi) continue;

                pi.crossings[label] = mi;
                if(startIndices.indexOf(mi) !== -1) {
                    pi.starts.push([xi, yi]);
                    if(twoWide && startIndices.indexOf(mi,
                            startIndices.indexOf(mi) + 1) !== -1) {
                        // the same square has starts from opposite sides
                        // it's not possible to have starts on opposite edges
                        // of a corner, only a start and an end...
                        // but if the array is only two points wide (either way)
                        // you can have starts on opposite sides.
                        pi.starts.push([xi, yi]);
                    }
                }
            }
        }
    }
};

// modified marching squares algorithm,
// so we disambiguate the saddle points from the start
// and we ignore the cases with no crossings
// the index I'm using is based on:
// http://en.wikipedia.org/wiki/Marching_squares
// except that the saddles bifurcate and I represent them
// as the decimal combination of the two appropriate
// non-saddle indices
function getMarchingIndex(val, corners) {
    var mi = (corners[0][0] > val ? 0 : 1) +
             (corners[0][1] > val ? 0 : 2) +
             (corners[1][1] > val ? 0 : 4) +
             (corners[1][0] > val ? 0 : 8);
    if(mi === 5 || mi === 10) {
        var avg = (corners[0][0] + corners[0][1] +
                   corners[1][0] + corners[1][1]) / 4;
        // two peaks with a big valley
        if(val > avg) return (mi === 5) ? 713 : 1114;
        // two valleys with a big ridge
        return (mi === 5) ? 104 : 208;
    }
    return (mi === 15) ? 0 : mi;
}

},{"./constants":761}],768:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Lib = require('../../lib');
var Drawing = require('../../components/drawing');

var heatmapPlot = require('../heatmap/plot');
var makeCrossings = require('./make_crossings');
var findAllPaths = require('./find_all_paths');


module.exports = function plot(gd, plotinfo, cdcontours) {
    for(var i = 0; i < cdcontours.length; i++) {
        plotOne(gd, plotinfo, cdcontours[i]);
    }
};

function plotOne(gd, plotinfo, cd) {
    var trace = cd[0].trace,
        x = cd[0].x,
        y = cd[0].y,
        contours = trace.contours,
        uid = trace.uid,
        xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        fullLayout = gd._fullLayout,
        id = 'contour' + uid,
        pathinfo = emptyPathinfo(contours, plotinfo, cd[0]);

    if(trace.visible !== true) {
        fullLayout._paper.selectAll('.' + id + ',.hm' + uid).remove();
        fullLayout._infolayer.selectAll('.cb' + uid).remove();
        return;
    }

    // use a heatmap to fill - draw it behind the lines
    if(contours.coloring === 'heatmap') {
        if(trace.zauto && (trace.autocontour === false)) {
            trace._input.zmin = trace.zmin =
                contours.start - contours.size / 2;
            trace._input.zmax = trace.zmax =
                trace.zmin + pathinfo.length * contours.size;
        }

        heatmapPlot(gd, plotinfo, [cd]);
    }
    // in case this used to be a heatmap (or have heatmap fill)
    else fullLayout._paper.selectAll('.hm' + uid).remove();

    makeCrossings(pathinfo);
    findAllPaths(pathinfo);

    var leftedge = xa.c2p(x[0], true),
        rightedge = xa.c2p(x[x.length - 1], true),
        bottomedge = ya.c2p(y[0], true),
        topedge = ya.c2p(y[y.length - 1], true),
        perimeter = [
            [leftedge, topedge],
            [rightedge, topedge],
            [rightedge, bottomedge],
            [leftedge, bottomedge]
        ];

    // draw everything
    var plotGroup = makeContourGroup(plotinfo, cd, id);
    makeBackground(plotGroup, perimeter, contours);
    makeFills(plotGroup, pathinfo, perimeter, contours);
    makeLines(plotGroup, pathinfo, contours);
    clipGaps(plotGroup, plotinfo, cd[0], perimeter);
}

function emptyPathinfo(contours, plotinfo, cd0) {
    var cs = contours.size,
        pathinfo = [];

    for(var ci = contours.start; ci < contours.end + cs / 10; ci += cs) {
        pathinfo.push({
            level: ci,
            // all the cells with nontrivial marching index
            crossings: {},
            // starting points on the edges of the lattice for each contour
            starts: [],
            // all unclosed paths (may have less items than starts,
            // if a path is closed by rounding)
            edgepaths: [],
            // all closed paths
            paths: [],
            // store axes so we can convert to px
            xaxis: plotinfo.xaxis,
            yaxis: plotinfo.yaxis,
            // full data arrays to use for interpolation
            x: cd0.x,
            y: cd0.y,
            z: cd0.z,
            smoothing: cd0.trace.line.smoothing
        });

        if(pathinfo.length > 1000) {
            Lib.warn('Too many contours, clipping at 1000', contours);
            break;
        }
    }
    return pathinfo;
}
function makeContourGroup(plotinfo, cd, id) {
    var plotgroup = plotinfo.plot.select('.maplayer')
        .selectAll('g.contour.' + id)
        .data(cd);

    plotgroup.enter().append('g')
        .classed('contour', true)
        .classed(id, true);

    plotgroup.exit().remove();

    return plotgroup;
}

function makeBackground(plotgroup, perimeter, contours) {
    var bggroup = plotgroup.selectAll('g.contourbg').data([0]);
    bggroup.enter().append('g').classed('contourbg', true);

    var bgfill = bggroup.selectAll('path')
        .data(contours.coloring === 'fill' ? [0] : []);
    bgfill.enter().append('path');
    bgfill.exit().remove();
    bgfill
        .attr('d', 'M' + perimeter.join('L') + 'Z')
        .style('stroke', 'none');
}

function makeFills(plotgroup, pathinfo, perimeter, contours) {
    var fillgroup = plotgroup.selectAll('g.contourfill')
        .data([0]);
    fillgroup.enter().append('g')
        .classed('contourfill', true);

    var fillitems = fillgroup.selectAll('path')
        .data(contours.coloring === 'fill' ? pathinfo : []);
    fillitems.enter().append('path');
    fillitems.exit().remove();
    fillitems.each(function(pi) {
        // join all paths for this level together into a single path
        // first follow clockwise around the perimeter to close any open paths
        // if the whole perimeter is above this level, start with a path
        // enclosing the whole thing. With all that, the parity should mean
        // that we always fill everything above the contour, nothing below
        var fullpath = joinAllPaths(pi, perimeter);

        if(!fullpath) d3.select(this).remove();
        else d3.select(this).attr('d', fullpath).style('stroke', 'none');
    });
}

function joinAllPaths(pi, perimeter) {
    var fullpath = (pi.edgepaths.length || pi.z[0][0] < pi.level) ?
            '' : ('M' + perimeter.join('L') + 'Z'),
        i = 0,
        startsleft = pi.edgepaths.map(function(v, i) { return i; }),
        newloop = true,
        endpt,
        newendpt,
        cnt,
        nexti,
        possiblei,
        addpath;

    function istop(pt) { return Math.abs(pt[1] - perimeter[0][1]) < 0.01; }
    function isbottom(pt) { return Math.abs(pt[1] - perimeter[2][1]) < 0.01; }
    function isleft(pt) { return Math.abs(pt[0] - perimeter[0][0]) < 0.01; }
    function isright(pt) { return Math.abs(pt[0] - perimeter[2][0]) < 0.01; }

    while(startsleft.length) {
        addpath = Drawing.smoothopen(pi.edgepaths[i], pi.smoothing);
        fullpath += newloop ? addpath : addpath.replace(/^M/, 'L');
        startsleft.splice(startsleft.indexOf(i), 1);
        endpt = pi.edgepaths[i][pi.edgepaths[i].length - 1];
        nexti = -1;

        // now loop through sides, moving our endpoint until we find a new start
        for(cnt = 0; cnt < 4; cnt++) { // just to prevent infinite loops
            if(!endpt) {
                Lib.log('Missing end?', i, pi);
                break;
            }

            if(istop(endpt) && !isright(endpt)) newendpt = perimeter[1]; // right top
            else if(isleft(endpt)) newendpt = perimeter[0]; // left top
            else if(isbottom(endpt)) newendpt = perimeter[3]; // right bottom
            else if(isright(endpt)) newendpt = perimeter[2]; // left bottom

            for(possiblei = 0; possiblei < pi.edgepaths.length; possiblei++) {
                var ptNew = pi.edgepaths[possiblei][0];
                // is ptNew on the (horz. or vert.) segment from endpt to newendpt?
                if(Math.abs(endpt[0] - newendpt[0]) < 0.01) {
                    if(Math.abs(endpt[0] - ptNew[0]) < 0.01 &&
                            (ptNew[1] - endpt[1]) * (newendpt[1] - ptNew[1]) >= 0) {
                        newendpt = ptNew;
                        nexti = possiblei;
                    }
                }
                else if(Math.abs(endpt[1] - newendpt[1]) < 0.01) {
                    if(Math.abs(endpt[1] - ptNew[1]) < 0.01 &&
                            (ptNew[0] - endpt[0]) * (newendpt[0] - ptNew[0]) >= 0) {
                        newendpt = ptNew;
                        nexti = possiblei;
                    }
                }
                else {
                    Lib.log('endpt to newendpt is not vert. or horz.',
                        endpt, newendpt, ptNew);
                }
            }

            endpt = newendpt;

            if(nexti >= 0) break;
            fullpath += 'L' + newendpt;
        }

        if(nexti === pi.edgepaths.length) {
            Lib.log('unclosed perimeter path');
            break;
        }

        i = nexti;

        // if we closed back on a loop we already included,
        // close it and start a new loop
        newloop = (startsleft.indexOf(i) === -1);
        if(newloop) {
            i = startsleft[0];
            fullpath += 'Z';
        }
    }

    // finally add the interior paths
    for(i = 0; i < pi.paths.length; i++) {
        fullpath += Drawing.smoothclosed(pi.paths[i], pi.smoothing);
    }

    return fullpath;
}

function makeLines(plotgroup, pathinfo, contours) {
    var smoothing = pathinfo[0].smoothing;

    var linegroup = plotgroup.selectAll('g.contourlevel')
        .data(contours.showlines === false ? [] : pathinfo);
    linegroup.enter().append('g')
        .classed('contourlevel', true);
    linegroup.exit().remove();

    var opencontourlines = linegroup.selectAll('path.openline')
        .data(function(d) { return d.edgepaths; });
    opencontourlines.enter().append('path')
        .classed('openline', true);
    opencontourlines.exit().remove();
    opencontourlines
        .attr('d', function(d) {
            return Drawing.smoothopen(d, smoothing);
        })
        .style('stroke-miterlimit', 1);

    var closedcontourlines = linegroup.selectAll('path.closedline')
        .data(function(d) { return d.paths; });
    closedcontourlines.enter().append('path')
        .classed('closedline', true);
    closedcontourlines.exit().remove();
    closedcontourlines
        .attr('d', function(d) {
            return Drawing.smoothclosed(d, smoothing);
        })
        .style('stroke-miterlimit', 1);
}

function clipGaps(plotGroup, plotinfo, cd0, perimeter) {
    var clipId = 'clip' + cd0.trace.uid;

    var defs = plotinfo.plot.selectAll('defs')
        .data([0]);
    defs.enter().append('defs');

    var clipPath = defs.selectAll('#' + clipId)
        .data(cd0.trace.connectgaps ? [] : [0]);
    clipPath.enter().append('clipPath').attr('id', clipId);
    clipPath.exit().remove();

    if(cd0.trace.connectgaps === false) {
        var clipPathInfo = {
            // fraction of the way from missing to present point
            // to draw the boundary.
            // if you make this 1 (or 1-epsilon) then a point in
            // a sea of missing data will disappear entirely.
            level: 0.9,
            crossings: {},
            starts: [],
            edgepaths: [],
            paths: [],
            xaxis: plotinfo.xaxis,
            yaxis: plotinfo.yaxis,
            x: cd0.x,
            y: cd0.y,
            // 0 = no data, 1 = data
            z: makeClipMask(cd0),
            smoothing: 0
        };

        makeCrossings([clipPathInfo]);
        findAllPaths([clipPathInfo]);
        var fullpath = joinAllPaths(clipPathInfo, perimeter);

        var path = clipPath.selectAll('path')
            .data([0]);
        path.enter().append('path');
        path.attr('d', fullpath);
    }
    else clipId = null;

    plotGroup.call(Drawing.setClipUrl, clipId);
    plotinfo.plot.selectAll('.hm' + cd0.trace.uid)
        .call(Drawing.setClipUrl, clipId);
}

function makeClipMask(cd0) {
    var empties = cd0.trace._emptypoints,
        z = [],
        m = cd0.z.length,
        n = cd0.z[0].length,
        i,
        row = [],
        emptyPoint;

    for(i = 0; i < n; i++) row.push(1);
    for(i = 0; i < m; i++) z.push(row.slice());
    for(i = 0; i < empties.length; i++) {
        emptyPoint = empties[i];
        z[emptyPoint[0]][emptyPoint[1]] = 0;
    }
    // save this mask to determine whether to show this data in hover
    cd0.zmask = z;
    return z;
}

},{"../../components/drawing":533,"../../lib":610,"../heatmap/plot":784,"./find_all_paths":763,"./make_crossings":767,"d3":86}],769:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Drawing = require('../../components/drawing');
var heatmapStyle = require('../heatmap/style');

var makeColorMap = require('./make_color_map');


module.exports = function style(gd) {
    var contours = d3.select(gd).selectAll('g.contour');

    contours.style('opacity', function(d) {
        return d.trace.opacity;
    });

    contours.each(function(d) {
        var c = d3.select(this),
            trace = d.trace,
            contours = trace.contours,
            line = trace.line,
            cs = contours.size || 1,
            start = contours.start;

        var colorMap = makeColorMap(trace);

        c.selectAll('g.contourlevel').each(function(d, i) {
            d3.select(this).selectAll('path')
                .call(Drawing.lineGroupStyle,
                    line.width,
                    contours.coloring === 'lines' ? colorMap(start + i * cs) : line.color,
                    line.dash);
        });

        c.selectAll('g.contourbg path')
            .style('fill', colorMap(start - cs / 2));

        c.selectAll('g.contourfill path')
            .style('fill', function(d, i) {
                return colorMap(start + (i + 0.5) * cs);
            });
    });

    heatmapStyle(gd);
};

},{"../../components/drawing":533,"../heatmap/style":785,"./make_color_map":766,"d3":86}],770:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var colorscaleDefaults = require('../../components/colorscale/defaults');


module.exports = function handleStyleDefaults(traceIn, traceOut, coerce, layout) {
    var coloring = coerce('contours.coloring');

    var showLines;
    if(coloring === 'fill') showLines = coerce('contours.showlines');

    if(showLines !== false) {
        if(coloring !== 'lines') coerce('line.color', '#000');
        coerce('line.width', 0.5);
        coerce('line.dash');
    }

    coerce('line.smoothing');

    if((traceOut.contours || {}).coloring !== 'none') {
        colorscaleDefaults(
            traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'}
        );
    }
};

},{"../../components/colorscale/defaults":519}],771:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

module.exports = extendFlat({}, {
    z: {
        valType: 'data_array',
        description: 'Sets the z data.'
    },
    x: scatterAttrs.x,
    x0: scatterAttrs.x0,
    dx: scatterAttrs.dx,
    y: scatterAttrs.y,
    y0: scatterAttrs.y0,
    dy: scatterAttrs.dy,

    text: {
        valType: 'data_array',
        description: 'Sets the text elements associated with each z value.'
    },
    transpose: {
        valType: 'boolean',
        dflt: false,
        role: 'info',
        description: 'Transposes the z data.'
    },
    xtype: {
        valType: 'enumerated',
        values: ['array', 'scaled'],
        role: 'info',
        description: [
            'If *array*, the heatmap\'s x coordinates are given by *x*',
            '(the default behavior when `x` is provided).',
            'If *scaled*, the heatmap\'s x coordinates are given by *x0* and *dx*',
            '(the default behavior when `x` is not provided).'
        ].join(' ')
    },
    ytype: {
        valType: 'enumerated',
        values: ['array', 'scaled'],
        role: 'info',
        description: [
            'If *array*, the heatmap\'s y coordinates are given by *y*',
            '(the default behavior when `y` is provided)',
            'If *scaled*, the heatmap\'s y coordinates are given by *y0* and *dy*',
            '(the default behavior when `y` is not provided)'
        ].join(' ')
    },
    zsmooth: {
        valType: 'enumerated',
        values: ['fast', 'best', false],
        dflt: false,
        role: 'style',
        description: [
            'Picks a smoothing algorithm use to smooth `z` data.'
        ].join(' ')
    },
    connectgaps: {
        valType: 'boolean',
        dflt: false,
        role: 'info',
        description: [
            'Determines whether or not gaps',
            '(i.e. {nan} or missing values)',
            'in the `z` data are filled in.'
        ].join(' ')
    },
    xgap: {
        valType: 'number',
        dflt: 0,
        min: 0,
        role: 'style',
        description: 'Sets the horizontal gap (in pixels) between bricks.'
    },
    ygap: {
        valType: 'number',
        dflt: 0,
        min: 0,
        role: 'style',
        description: 'Sets the vertical gap (in pixels) between bricks.'
    },
},
    colorscaleAttrs,
    { autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}) },
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../scatter/attributes":834}],772:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var histogram2dCalc = require('../histogram2d/calc');
var colorscaleCalc = require('../../components/colorscale/calc');
var hasColumns = require('./has_columns');
var convertColumnXYZ = require('./convert_column_xyz');
var maxRowLength = require('./max_row_length');
var clean2dArray = require('./clean_2d_array');
var interp2d = require('./interp2d');
var findEmpties = require('./find_empties');
var makeBoundArray = require('./make_bound_array');


module.exports = function calc(gd, trace) {
    // prepare the raw data
    // run makeCalcdata on x and y even for heatmaps, in case of category mappings
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        ya = Axes.getFromId(gd, trace.yaxis || 'y'),
        isContour = Registry.traceIs(trace, 'contour'),
        isHist = Registry.traceIs(trace, 'histogram'),
        isGL2D = Registry.traceIs(trace, 'gl2d'),
        zsmooth = isContour ? 'best' : trace.zsmooth,
        x,
        x0,
        dx,
        y,
        y0,
        dy,
        z,
        i;

    // cancel minimum tick spacings (only applies to bars and boxes)
    xa._minDtick = 0;
    ya._minDtick = 0;

    if(isHist) {
        var binned = histogram2dCalc(gd, trace);
        x = binned.x;
        x0 = binned.x0;
        dx = binned.dx;
        y = binned.y;
        y0 = binned.y0;
        dy = binned.dy;
        z = binned.z;
    }
    else {
        if(hasColumns(trace)) convertColumnXYZ(trace, xa, ya);

        x = trace.x ? xa.makeCalcdata(trace, 'x') : [];
        y = trace.y ? ya.makeCalcdata(trace, 'y') : [];
        x0 = trace.x0 || 0;
        dx = trace.dx || 1;
        y0 = trace.y0 || 0;
        dy = trace.dy || 1;

        z = clean2dArray(trace.z, trace.transpose);

        if(isContour || trace.connectgaps) {
            trace._emptypoints = findEmpties(z);
            trace._interpz = interp2d(z, trace._emptypoints, trace._interpz);
        }
    }

    function noZsmooth(msg) {
        zsmooth = trace._input.zsmooth = trace.zsmooth = false;
        Lib.notifier('cannot fast-zsmooth: ' + msg);
    }

    // check whether we really can smooth (ie all boxes are about the same size)
    if(zsmooth === 'fast') {
        if(xa.type === 'log' || ya.type === 'log') {
            noZsmooth('log axis found');
        }
        else if(!isHist) {
            if(x.length) {
                var avgdx = (x[x.length - 1] - x[0]) / (x.length - 1),
                    maxErrX = Math.abs(avgdx / 100);
                for(i = 0; i < x.length - 1; i++) {
                    if(Math.abs(x[i + 1] - x[i] - avgdx) > maxErrX) {
                        noZsmooth('x scale is not linear');
                        break;
                    }
                }
            }
            if(y.length && zsmooth === 'fast') {
                var avgdy = (y[y.length - 1] - y[0]) / (y.length - 1),
                    maxErrY = Math.abs(avgdy / 100);
                for(i = 0; i < y.length - 1; i++) {
                    if(Math.abs(y[i + 1] - y[i] - avgdy) > maxErrY) {
                        noZsmooth('y scale is not linear');
                        break;
                    }
                }
            }
        }
    }

    // create arrays of brick boundaries, to be used by autorange and heatmap.plot
    var xlen = maxRowLength(z),
        xIn = trace.xtype === 'scaled' ? '' : x,
        xArray = makeBoundArray(trace, xIn, x0, dx, xlen, xa),
        yIn = trace.ytype === 'scaled' ? '' : y,
        yArray = makeBoundArray(trace, yIn, y0, dy, z.length, ya);

    // handled in gl2d convert step
    if(!isGL2D) {
        Axes.expand(xa, xArray);
        Axes.expand(ya, yArray);
    }

    var cd0 = {x: xArray, y: yArray, z: z};

    // auto-z and autocolorscale if applicable
    colorscaleCalc(trace, z, '', 'z');

    if(isContour && trace.contours && trace.contours.coloring === 'heatmap') {
        var dummyTrace = {
            type: trace.type === 'contour' ? 'heatmap' : 'histogram2d',
            xcalendar: trace.xcalendar,
            ycalendar: trace.ycalendar
        };
        cd0.xfill = makeBoundArray(dummyTrace, xIn, x0, dx, xlen, xa);
        cd0.yfill = makeBoundArray(dummyTrace, yIn, y0, dy, z.length, ya);
    }

    return [cd0];
};

},{"../../components/colorscale/calc":516,"../../lib":610,"../../plots/cartesian/axes":642,"../../registry":717,"../histogram2d/calc":800,"./clean_2d_array":773,"./convert_column_xyz":775,"./find_empties":777,"./has_columns":778,"./interp2d":781,"./make_bound_array":782,"./max_row_length":783}],773:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');

module.exports = function clean2dArray(zOld, transpose) {
    var rowlen, collen, getCollen, old2new, i, j;

    function cleanZvalue(v) {
        if(!isNumeric(v)) return undefined;
        return +v;
    }

    if(transpose) {
        rowlen = 0;
        for(i = 0; i < zOld.length; i++) rowlen = Math.max(rowlen, zOld[i].length);
        if(rowlen === 0) return false;
        getCollen = function(zOld) { return zOld.length; };
        old2new = function(zOld, i, j) { return zOld[j][i]; };
    }
    else {
        rowlen = zOld.length;
        getCollen = function(zOld, i) { return zOld[i].length; };
        old2new = function(zOld, i, j) { return zOld[i][j]; };
    }

    var zNew = new Array(rowlen);

    for(i = 0; i < rowlen; i++) {
        collen = getCollen(zOld, i);
        zNew[i] = new Array(collen);
        for(j = 0; j < collen; j++) zNew[i][j] = cleanZvalue(old2new(zOld, i, j));
    }

    return zNew;
};

},{"fast-isnumeric":97}],774:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Colorscale = require('../../components/colorscale');
var drawColorbar = require('../../components/colorbar/draw');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        cbId = 'cb' + trace.uid,
        zmin = trace.zmin,
        zmax = trace.zmax;

    if(!isNumeric(zmin)) zmin = Lib.aggNums(Math.min, null, trace.z);
    if(!isNumeric(zmax)) zmax = Lib.aggNums(Math.max, null, trace.z);

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    if(!trace.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var cb = cd[0].t.cb = drawColorbar(gd, cbId);
    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            trace.colorscale,
            zmin,
            zmax
        ),
        { noNumericCheck: true }
    );

    cb.fillcolor(sclFunc)
        .filllevels({start: zmin, end: zmax, size: (zmax - zmin) / 254})
        .options(trace.colorbar)();
};

},{"../../components/colorbar/draw":513,"../../components/colorscale":524,"../../lib":610,"../../plots/plots":702,"fast-isnumeric":97}],775:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


module.exports = function convertColumnXYZ(trace, xa, ya) {
    var xCol = trace.x.slice(),
        yCol = trace.y.slice(),
        zCol = trace.z,
        textCol = trace.text,
        colLen = Math.min(xCol.length, yCol.length, zCol.length),
        hasColumnText = (textCol !== undefined && !Array.isArray(textCol[0])),
        xcalendar = trace.xcalendar,
        ycalendar = trace.ycalendar;

    var i;

    if(colLen < xCol.length) xCol = xCol.slice(0, colLen);
    if(colLen < yCol.length) yCol = yCol.slice(0, colLen);

    for(i = 0; i < colLen; i++) {
        xCol[i] = xa.d2c(xCol[i], 0, xcalendar);
        yCol[i] = ya.d2c(yCol[i], 0, ycalendar);
    }

    var xColdv = Lib.distinctVals(xCol),
        x = xColdv.vals,
        yColdv = Lib.distinctVals(yCol),
        y = yColdv.vals,
        z = Lib.init2dArray(y.length, x.length);

    var ix, iy, text;

    if(hasColumnText) text = Lib.init2dArray(y.length, x.length);

    for(i = 0; i < colLen; i++) {
        ix = Lib.findBin(xCol[i] + xColdv.minDiff / 2, x);
        iy = Lib.findBin(yCol[i] + yColdv.minDiff / 2, y);

        z[iy][ix] = zCol[i];
        if(hasColumnText) text[iy][ix] = textCol[i];
    }

    trace.x = x;
    trace.y = y;
    trace.z = z;
    if(hasColumnText) trace.text = text;
};

},{"../../lib":610}],776:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var hasColumns = require('./has_columns');
var handleXYZDefaults = require('./xyz_defaults');
var colorscaleDefaults = require('../../components/colorscale/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYZDefaults(traceIn, traceOut, coerce, layout);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');

    var zsmooth = coerce('zsmooth');
    if(zsmooth === false) {
        // ensure that xgap and ygap are coerced only when zsmooth allows them to have an effect.
        coerce('xgap');
        coerce('ygap');
    }

    coerce('connectgaps', hasColumns(traceOut) && (traceOut.zsmooth !== false));

    colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'});
};

},{"../../components/colorscale/defaults":519,"../../lib":610,"./attributes":771,"./has_columns":778,"./xyz_defaults":786}],777:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var maxRowLength = require('./max_row_length');

/* Return a list of empty points in 2D array z
 * each empty point z[i][j] gives an array [i, j, neighborCount]
 * neighborCount is the count of 4 nearest neighbors that DO exist
 * this is to give us an order of points to evaluate for interpolation.
 * if no neighbors exist, we iteratively look for neighbors that HAVE
 * neighbors, and add a fractional neighborCount
 */
module.exports = function findEmpties(z) {
    var empties = [],
        neighborHash = {},
        noNeighborList = [],
        nextRow = z[0],
        row = [],
        blank = [0, 0, 0],
        rowLength = maxRowLength(z),
        prevRow,
        i,
        j,
        thisPt,
        p,
        neighborCount,
        newNeighborHash,
        foundNewNeighbors;

    for(i = 0; i < z.length; i++) {
        prevRow = row;
        row = nextRow;
        nextRow = z[i + 1] || [];
        for(j = 0; j < rowLength; j++) {
            if(row[j] === undefined) {
                neighborCount = (row[j - 1] !== undefined ? 1 : 0) +
                    (row[j + 1] !== undefined ? 1 : 0) +
                    (prevRow[j] !== undefined ? 1 : 0) +
                    (nextRow[j] !== undefined ? 1 : 0);

                if(neighborCount) {
                    // for this purpose, don't count off-the-edge points
                    // as undefined neighbors
                    if(i === 0) neighborCount++;
                    if(j === 0) neighborCount++;
                    if(i === z.length - 1) neighborCount++;
                    if(j === row.length - 1) neighborCount++;

                    // if all neighbors that could exist do, we don't
                    // need this for finding farther neighbors
                    if(neighborCount < 4) {
                        neighborHash[[i, j]] = [i, j, neighborCount];
                    }

                    empties.push([i, j, neighborCount]);
                }
                else noNeighborList.push([i, j]);
            }
        }
    }

    while(noNeighborList.length) {
        newNeighborHash = {};
        foundNewNeighbors = false;

        // look for cells that now have neighbors but didn't before
        for(p = noNeighborList.length - 1; p >= 0; p--) {
            thisPt = noNeighborList[p];
            i = thisPt[0];
            j = thisPt[1];

            neighborCount = ((neighborHash[[i - 1, j]] || blank)[2] +
                (neighborHash[[i + 1, j]] || blank)[2] +
                (neighborHash[[i, j - 1]] || blank)[2] +
                (neighborHash[[i, j + 1]] || blank)[2]) / 20;

            if(neighborCount) {
                newNeighborHash[thisPt] = [i, j, neighborCount];
                noNeighborList.splice(p, 1);
                foundNewNeighbors = true;
            }
        }

        if(!foundNewNeighbors) {
            throw 'findEmpties iterated with no new neighbors';
        }

        // put these new cells into the main neighbor list
        for(thisPt in newNeighborHash) {
            neighborHash[thisPt] = newNeighborHash[thisPt];
            empties.push(newNeighborHash[thisPt]);
        }
    }

    // sort the full list in descending order of neighbor count
    return empties.sort(function(a, b) { return b[2] - a[2]; });
};

},{"./max_row_length":783}],778:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = function(trace) {
    return !Array.isArray(trace.z[0]);
};

},{}],779:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Fx = require('../../plots/cartesian/graph_interact');
var Lib = require('../../lib');

var MAXDIST = require('../../plots/cartesian/constants').MAXDIST;


module.exports = function hoverPoints(pointData, xval, yval, hovermode, contour) {
    // never let a heatmap override another type as closest point
    if(pointData.distance < MAXDIST) return;

    var cd0 = pointData.cd[0],
        trace = cd0.trace,
        xa = pointData.xa,
        ya = pointData.ya,
        x = cd0.x,
        y = cd0.y,
        z = cd0.z,
        zmask = cd0.zmask,
        x2 = x,
        y2 = y,
        xl,
        yl,
        nx,
        ny;

    if(pointData.index !== false) {
        try {
            nx = Math.round(pointData.index[1]);
            ny = Math.round(pointData.index[0]);
        }
        catch(e) {
            Lib.error('Error hovering on heatmap, ' +
                'pointNumber must be [row,col], found:', pointData.index);
            return;
        }
        if(nx < 0 || nx >= z[0].length || ny < 0 || ny > z.length) {
            return;
        }
    }
    else if(Fx.inbox(xval - x[0], xval - x[x.length - 1]) > MAXDIST ||
            Fx.inbox(yval - y[0], yval - y[y.length - 1]) > MAXDIST) {
        return;
    }
    else {
        if(contour) {
            var i2;
            x2 = [2 * x[0] - x[1]];

            for(i2 = 1; i2 < x.length; i2++) {
                x2.push((x[i2] + x[i2 - 1]) / 2);
            }
            x2.push([2 * x[x.length - 1] - x[x.length - 2]]);

            y2 = [2 * y[0] - y[1]];
            for(i2 = 1; i2 < y.length; i2++) {
                y2.push((y[i2] + y[i2 - 1]) / 2);
            }
            y2.push([2 * y[y.length - 1] - y[y.length - 2]]);
        }
        nx = Math.max(0, Math.min(x2.length - 2, Lib.findBin(xval, x2)));
        ny = Math.max(0, Math.min(y2.length - 2, Lib.findBin(yval, y2)));
    }

    var x0 = xa.c2p(x[nx]),
        x1 = xa.c2p(x[nx + 1]),
        y0 = ya.c2p(y[ny]),
        y1 = ya.c2p(y[ny + 1]);

    if(contour) {
        x1 = x0;
        xl = x[nx];
        y1 = y0;
        yl = y[ny];
    }
    else {
        xl = (x[nx] + x[nx + 1]) / 2;
        yl = (y[ny] + y[ny + 1]) / 2;
        if(trace.zsmooth) {
            x0 = x1 = (x0 + x1) / 2;
            y0 = y1 = (y0 + y1) / 2;
        }
    }

    var zVal = z[ny][nx];
    if(zmask && !zmask[ny][nx]) zVal = undefined;

    var text;
    if(Array.isArray(trace.text) && Array.isArray(trace.text[ny])) {
        text = trace.text[ny][nx];
    }

    return [Lib.extendFlat(pointData, {
        index: [ny, nx],
        // never let a 2D override 1D type as closest point
        distance: MAXDIST + 10,
        x0: x0,
        x1: x1,
        y0: y0,
        y1: y1,
        xLabelVal: xl,
        yLabelVal: yl,
        zLabelVal: zVal,
        text: text
    })];
};

},{"../../lib":610,"../../plots/cartesian/constants":647,"../../plots/cartesian/graph_interact":649}],780:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Heatmap = {};

Heatmap.attributes = require('./attributes');
Heatmap.supplyDefaults = require('./defaults');
Heatmap.calc = require('./calc');
Heatmap.plot = require('./plot');
Heatmap.colorbar = require('./colorbar');
Heatmap.style = require('./style');
Heatmap.hoverPoints = require('./hover');

Heatmap.moduleType = 'trace';
Heatmap.name = 'heatmap';
Heatmap.basePlotModule = require('../../plots/cartesian');
Heatmap.categories = ['cartesian', '2dMap'];
Heatmap.meta = {
    description: [
        'The data that describes the heatmap value-to-color mapping',
        'is set in `z`.',
        'Data in `z` can either be a {2D array} of values (ragged or not)',
        'or a 1D array of values.',

        'In the case where `z` is a {2D array},',
        'say that `z` has N rows and M columns.',
        'Then, by default, the resulting heatmap will have N partitions along',
        'the y axis and M partitions along the x axis.',
        'In other words, the i-th row/ j-th column cell in `z`',
        'is mapped to the i-th partition of the y axis',
        '(starting from the bottom of the plot) and the j-th partition',
        'of the x-axis (starting from the left of the plot).',
        'This behavior can be flipped by using `transpose`.',
        'Moreover, `x` (`y`) can be provided with M or M+1 (N or N+1) elements.',
        'If M (N), then the coordinates correspond to the center of the',
        'heatmap cells and the cells have equal width.',
        'If M+1 (N+1), then the coordinates correspond to the edges of the',
        'heatmap cells.',

        'In the case where `z` is a 1D {array}, the x and y coordinates must be',
        'provided in `x` and `y` respectively to form data triplets.'
    ].join(' ')
};

module.exports = Heatmap;

},{"../../plots/cartesian":650,"./attributes":771,"./calc":772,"./colorbar":774,"./defaults":776,"./hover":779,"./plot":784,"./style":785}],781:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');

var INTERPTHRESHOLD = 1e-2,
    NEIGHBORSHIFTS = [[-1, 0], [1, 0], [0, -1], [0, 1]];

function correctionOvershoot(maxFractionalChange) {
    // start with less overshoot, until we know it's converging,
    // then ramp up the overshoot for faster convergence
    return 0.5 - 0.25 * Math.min(1, maxFractionalChange * 0.5);
}

module.exports = function interp2d(z, emptyPoints, savedInterpZ) {
    // fill in any missing data in 2D array z using an iterative
    // poisson equation solver with zero-derivative BC at edges
    // amazingly, this just amounts to repeatedly averaging all the existing
    // nearest neighbors (at least if we don't take x/y scaling into account)
    var maxFractionalChange = 1,
        i,
        thisPt;

    if(Array.isArray(savedInterpZ)) {
        for(i = 0; i < emptyPoints.length; i++) {
            thisPt = emptyPoints[i];
            z[thisPt[0]][thisPt[1]] = savedInterpZ[thisPt[0]][thisPt[1]];
        }
    }
    else {
        // one pass to fill in a starting value for all the empties
        iterateInterp2d(z, emptyPoints);
    }

    // we're don't need to iterate lone empties - remove them
    for(i = 0; i < emptyPoints.length; i++) {
        if(emptyPoints[i][2] < 4) break;
    }
    // but don't remove these points from the original array,
    // we'll use them for masking, so make a copy.
    emptyPoints = emptyPoints.slice(i);

    for(i = 0; i < 100 && maxFractionalChange > INTERPTHRESHOLD; i++) {
        maxFractionalChange = iterateInterp2d(z, emptyPoints,
            correctionOvershoot(maxFractionalChange));
    }
    if(maxFractionalChange > INTERPTHRESHOLD) {
        Lib.log('interp2d didn\'t converge quickly', maxFractionalChange);
    }

    return z;
};

function iterateInterp2d(z, emptyPoints, overshoot) {
    var maxFractionalChange = 0,
        thisPt,
        i,
        j,
        p,
        q,
        neighborShift,
        neighborRow,
        neighborVal,
        neighborCount,
        neighborSum,
        initialVal,
        minNeighbor,
        maxNeighbor;

    for(p = 0; p < emptyPoints.length; p++) {
        thisPt = emptyPoints[p];
        i = thisPt[0];
        j = thisPt[1];
        initialVal = z[i][j];
        neighborSum = 0;
        neighborCount = 0;

        for(q = 0; q < 4; q++) {
            neighborShift = NEIGHBORSHIFTS[q];
            neighborRow = z[i + neighborShift[0]];
            if(!neighborRow) continue;
            neighborVal = neighborRow[j + neighborShift[1]];
            if(neighborVal !== undefined) {
                if(neighborSum === 0) {
                    minNeighbor = maxNeighbor = neighborVal;
                }
                else {
                    minNeighbor = Math.min(minNeighbor, neighborVal);
                    maxNeighbor = Math.max(maxNeighbor, neighborVal);
                }
                neighborCount++;
                neighborSum += neighborVal;
            }
        }

        if(neighborCount === 0) {
            throw 'iterateInterp2d order is wrong: no defined neighbors';
        }

        // this is the laplace equation interpolation:
        // each point is just the average of its neighbors
        // note that this ignores differential x/y scaling
        // which I think is the right approach, since we
        // don't know what that scaling means
        z[i][j] = neighborSum / neighborCount;

        if(initialVal === undefined) {
            if(neighborCount < 4) maxFractionalChange = 1;
        }
        else {
            // we can make large empty regions converge faster
            // if we overshoot the change vs the previous value
            z[i][j] = (1 + overshoot) * z[i][j] - overshoot * initialVal;

            if(maxNeighbor > minNeighbor) {
                maxFractionalChange = Math.max(maxFractionalChange,
                    Math.abs(z[i][j] - initialVal) / (maxNeighbor - minNeighbor));
            }
        }
    }

    return maxFractionalChange;
}

},{"../../lib":610}],782:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');

module.exports = function makeBoundArray(trace, arrayIn, v0In, dvIn, numbricks, ax) {
    var arrayOut = [],
        isContour = Registry.traceIs(trace, 'contour'),
        isHist = Registry.traceIs(trace, 'histogram'),
        isGL2D = Registry.traceIs(trace, 'gl2d'),
        v0,
        dv,
        i;

    var isArrayOfTwoItemsOrMore = Array.isArray(arrayIn) && arrayIn.length > 1;

    if(isArrayOfTwoItemsOrMore && !isHist && (ax.type !== 'category')) {
        var len = arrayIn.length;

        // given vals are brick centers
        // hopefully length === numbricks, but use this method even if too few are supplied
        // and extend it linearly based on the last two points
        if(len <= numbricks) {
            // contour plots only want the centers
            if(isContour || isGL2D) arrayOut = arrayIn.slice(0, numbricks);
            else if(numbricks === 1) {
                arrayOut = [arrayIn[0] - 0.5, arrayIn[0] + 0.5];
            }
            else {
                arrayOut = [1.5 * arrayIn[0] - 0.5 * arrayIn[1]];

                for(i = 1; i < len; i++) {
                    arrayOut.push((arrayIn[i - 1] + arrayIn[i]) * 0.5);
                }

                arrayOut.push(1.5 * arrayIn[len - 1] - 0.5 * arrayIn[len - 2]);
            }

            if(len < numbricks) {
                var lastPt = arrayOut[arrayOut.length - 1],
                    delta = lastPt - arrayOut[arrayOut.length - 2];

                for(i = len; i < numbricks; i++) {
                    lastPt += delta;
                    arrayOut.push(lastPt);
                }
            }
        }
        else {
            // hopefully length === numbricks+1, but do something regardless:
            // given vals are brick boundaries
            return isContour ?
                arrayIn.slice(0, numbricks) :  // we must be strict for contours
                arrayIn.slice(0, numbricks + 1);
        }
    }
    else {
        dv = dvIn || 1;

        var calendar = trace[ax._id.charAt(0) + 'calendar'];

        if(isHist || ax.type === 'category') v0 = ax.r2c(v0In, 0, calendar) || 0;
        else if(Array.isArray(arrayIn) && arrayIn.length === 1) v0 = arrayIn[0];
        else if(v0In === undefined) v0 = 0;
        else v0 = ax.d2c(v0In, 0, calendar);

        for(i = (isContour || isGL2D) ? 0 : -0.5; i < numbricks; i++) {
            arrayOut.push(v0 + dv * i);
        }
    }

    return arrayOut;
};

},{"../../registry":717}],783:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = function maxRowLength(z) {
    var len = 0;

    for(var i = 0; i < z.length; i++) {
        len = Math.max(len, z[i].length);
    }

    return len;
};

},{}],784:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var tinycolor = require('tinycolor2');

var Registry = require('../../registry');
var Lib = require('../../lib');
var Colorscale = require('../../components/colorscale');
var xmlnsNamespaces = require('../../constants/xmlns_namespaces');

var maxRowLength = require('./max_row_length');


module.exports = function(gd, plotinfo, cdheatmaps) {
    for(var i = 0; i < cdheatmaps.length; i++) {
        plotOne(gd, plotinfo, cdheatmaps[i]);
    }
};

// From http://www.xarg.org/2010/03/generate-client-side-png-files-using-javascript/
function plotOne(gd, plotinfo, cd) {
    var trace = cd[0].trace,
        uid = trace.uid,
        xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        fullLayout = gd._fullLayout,
        id = 'hm' + uid;

    // in case this used to be a contour map
    fullLayout._paper.selectAll('.contour' + uid).remove();

    if(trace.visible !== true) {
        fullLayout._paper.selectAll('.' + id).remove();
        fullLayout._infolayer.selectAll('.cb' + uid).remove();
        return;
    }

    var z = cd[0].z,
        x = cd[0].x,
        y = cd[0].y,
        isContour = Registry.traceIs(trace, 'contour'),
        zsmooth = isContour ? 'best' : trace.zsmooth,

        // get z dims
        m = z.length,
        n = maxRowLength(z),
        xrev = false,
        left,
        right,
        temp,
        yrev = false,
        top,
        bottom,
        i;

    // TODO: if there are multiple overlapping categorical heatmaps,
    // or if we allow category sorting, then the categories may not be
    // sequential... may need to reorder and/or expand z

    // Get edges of png in pixels (xa.c2p() maps axes coordinates to pixel coordinates)
    // figure out if either axis is reversed (y is usually reversed, in pixel coords)
    // also clip the image to maximum 50% outside the visible plot area
    // bigger image lets you pan more naturally, but slows performance.
    // TODO: use low-resolution images outside the visible plot for panning
    // these while loops find the first and last brick bounds that are defined
    // (in case of log of a negative)
    i = 0;
    while(left === undefined && i < x.length - 1) {
        left = xa.c2p(x[i]);
        i++;
    }
    i = x.length - 1;
    while(right === undefined && i > 0) {
        right = xa.c2p(x[i]);
        i--;
    }

    if(right < left) {
        temp = right;
        right = left;
        left = temp;
        xrev = true;
    }

    i = 0;
    while(top === undefined && i < y.length - 1) {
        top = ya.c2p(y[i]);
        i++;
    }
    i = y.length - 1;
    while(bottom === undefined && i > 0) {
        bottom = ya.c2p(y[i]);
        i--;
    }

    if(bottom < top) {
        temp = top;
        top = bottom;
        bottom = temp;
        yrev = true;
    }

    // for contours with heatmap fill, we generate the boundaries based on
    // brick centers but then use the brick edges for drawing the bricks
    if(isContour) {
        // TODO: for 'best' smoothing, we really should use the given brick
        // centers as well as brick bounds in calculating values, in case of
        // nonuniform brick sizes
        x = cd[0].xfill;
        y = cd[0].yfill;
    }

    // make an image that goes at most half a screen off either side, to keep
    // time reasonable when you zoom in. if zsmooth is true/fast, don't worry
    // about this, because zooming doesn't increase number of pixels
    // if zsmooth is best, don't include anything off screen because it takes too long
    if(zsmooth !== 'fast') {
        var extra = zsmooth === 'best' ? 0 : 0.5;
        left = Math.max(-extra * xa._length, left);
        right = Math.min((1 + extra) * xa._length, right);
        top = Math.max(-extra * ya._length, top);
        bottom = Math.min((1 + extra) * ya._length, bottom);
    }

    var imageWidth = Math.round(right - left),
        imageHeight = Math.round(bottom - top);

    // setup image nodes

    // if image is entirely off-screen, don't even draw it
    var isOffScreen = (imageWidth <= 0 || imageHeight <= 0);

    var plotgroup = plotinfo.plot.select('.imagelayer')
        .selectAll('g.hm.' + id)
        .data(isOffScreen ? [] : [0]);

    plotgroup.enter().append('g')
        .classed('hm', true)
        .classed(id, true);

    plotgroup.exit().remove();

    if(isOffScreen) return;

    // generate image data

    var canvasW, canvasH;
    if(zsmooth === 'fast') {
        canvasW = n;
        canvasH = m;
    } else {
        canvasW = imageWidth;
        canvasH = imageHeight;
    }

    var canvas = document.createElement('canvas');
    canvas.width = canvasW;
    canvas.height = canvasH;
    var context = canvas.getContext('2d');

    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            trace.colorscale,
            trace.zmin,
            trace.zmax
        ),
        { noNumericCheck: true, returnArray: true }
    );

    // map brick boundaries to image pixels
    var xpx,
        ypx;
    if(zsmooth === 'fast') {
        xpx = xrev ?
            function(index) { return n - 1 - index; } :
            Lib.identity;
        ypx = yrev ?
            function(index) { return m - 1 - index; } :
            Lib.identity;
    }
    else {
        xpx = function(index) {
            return Lib.constrain(Math.round(xa.c2p(x[index]) - left),
                0, imageWidth);
        };
        ypx = function(index) {
            return Lib.constrain(Math.round(ya.c2p(y[index]) - top),
                0, imageHeight);
        };
    }

    // get interpolated bin value. Returns {bin0:closest bin, frac:fractional dist to next, bin1:next bin}
    function findInterp(pixel, pixArray) {
        var maxbin = pixArray.length - 2,
            bin = Lib.constrain(Lib.findBin(pixel, pixArray), 0, maxbin),
            pix0 = pixArray[bin],
            pix1 = pixArray[bin + 1],
            interp = Lib.constrain(bin + (pixel - pix0) / (pix1 - pix0) - 0.5, 0, maxbin),
            bin0 = Math.round(interp),
            frac = Math.abs(interp - bin0);

        if(!interp || interp === maxbin || !frac) {
            return {
                bin0: bin0,
                bin1: bin0,
                frac: 0
            };
        }
        return {
            bin0: bin0,
            frac: frac,
            bin1: Math.round(bin0 + frac / (interp - bin0))
        };
    }

    // build the pixel map brick-by-brick
    // cruise through z-matrix row-by-row
    // build a brick at each z-matrix value
    var yi = ypx(0),
        yb = [yi, yi],
        xbi = xrev ? 0 : 1,
        ybi = yrev ? 0 : 1,
        // for collecting an average luminosity of the heatmap
        pixcount = 0,
        rcount = 0,
        gcount = 0,
        bcount = 0,
        brickWithPadding,
        xb,
        j,
        xi,
        v,
        row,
        c;

    function applyBrickPadding(trace, x0, x1, y0, y1, xIndex, xLength, yIndex, yLength) {
        var padding = {
                x0: x0,
                x1: x1,
                y0: y0,
                y1: y1
            },
            xEdgeGap = trace.xgap * 2 / 3,
            yEdgeGap = trace.ygap * 2 / 3,
            xCenterGap = trace.xgap / 3,
            yCenterGap = trace.ygap / 3;

        if(yIndex === yLength - 1) { // top edge brick
            padding.y1 = y1 - yEdgeGap;
        }

        if(xIndex === xLength - 1) { // right edge brick
            padding.x0 = x0 + xEdgeGap;
        }

        if(yIndex === 0) { // bottom edge brick
            padding.y0 = y0 + yEdgeGap;
        }

        if(xIndex === 0) { // left edge brick
            padding.x1 = x1 - xEdgeGap;
        }

        if(xIndex > 0 && xIndex < xLength - 1) { // brick in the center along x
            padding.x0 = x0 + xCenterGap;
            padding.x1 = x1 - xCenterGap;
        }

        if(yIndex > 0 && yIndex < yLength - 1) { // brick in the center along y
            padding.y0 = y0 + yCenterGap;
            padding.y1 = y1 - yCenterGap;
        }

        return padding;
    }

    function setColor(v, pixsize) {
        if(v !== undefined) {
            var c = sclFunc(v);
            c[0] = Math.round(c[0]);
            c[1] = Math.round(c[1]);
            c[2] = Math.round(c[2]);

            pixcount += pixsize;
            rcount += c[0] * pixsize;
            gcount += c[1] * pixsize;
            bcount += c[2] * pixsize;
            return c;
        }
        return [0, 0, 0, 0];
    }

    function putColor(pixels, pxIndex, c) {
        pixels[pxIndex] = c[0];
        pixels[pxIndex + 1] = c[1];
        pixels[pxIndex + 2] = c[2];
        pixels[pxIndex + 3] = Math.round(c[3] * 255);
    }

    function interpColor(r0, r1, xinterp, yinterp) {
        var z00 = r0[xinterp.bin0];
        if(z00 === undefined) return setColor(undefined, 1);

        var z01 = r0[xinterp.bin1],
            z10 = r1[xinterp.bin0],
            z11 = r1[xinterp.bin1],
            dx = (z01 - z00) || 0,
            dy = (z10 - z00) || 0,
            dxy;

        // the bilinear interpolation term needs different calculations
        // for all the different permutations of missing data
        // among the neighbors of the main point, to ensure
        // continuity across brick boundaries.
        if(z01 === undefined) {
            if(z11 === undefined) dxy = 0;
            else if(z10 === undefined) dxy = 2 * (z11 - z00);
            else dxy = (2 * z11 - z10 - z00) * 2 / 3;
        }
        else if(z11 === undefined) {
            if(z10 === undefined) dxy = 0;
            else dxy = (2 * z00 - z01 - z10) * 2 / 3;
        }
        else if(z10 === undefined) dxy = (2 * z11 - z01 - z00) * 2 / 3;
        else dxy = (z11 + z00 - z01 - z10);

        return setColor(z00 + xinterp.frac * dx + yinterp.frac * (dy + xinterp.frac * dxy));
    }

    if(zsmooth) { // best or fast, works fastest with imageData
        var pxIndex = 0,
            pixels = new Uint8Array(imageWidth * imageHeight * 4);

        if(zsmooth === 'best') {
            var xPixArray = new Array(x.length),
                yPixArray = new Array(y.length),
                xinterpArray = new Array(imageWidth),
                yinterp,
                r0,
                r1;

            // first make arrays of x and y pixel locations of brick boundaries
            for(i = 0; i < x.length; i++) xPixArray[i] = Math.round(xa.c2p(x[i]) - left);
            for(i = 0; i < y.length; i++) yPixArray[i] = Math.round(ya.c2p(y[i]) - top);

            // then make arrays of interpolations
            // (bin0=closest, bin1=next, frac=fractional dist.)
            for(i = 0; i < imageWidth; i++) xinterpArray[i] = findInterp(i, xPixArray);

            // now do the interpolations and fill the png
            for(j = 0; j < imageHeight; j++) {
                yinterp = findInterp(j, yPixArray);
                r0 = z[yinterp.bin0];
                r1 = z[yinterp.bin1];
                for(i = 0; i < imageWidth; i++, pxIndex += 4) {
                    c = interpColor(r0, r1, xinterpArray[i], yinterp);
                    putColor(pixels, pxIndex, c);
                }
            }
        }
        else { // zsmooth = fast
            for(j = 0; j < m; j++) {
                row = z[j];
                yb = ypx(j);
                for(i = 0; i < imageWidth; i++) {
                    c = setColor(row[i], 1);
                    pxIndex = (yb * imageWidth + xpx(i)) * 4;
                    putColor(pixels, pxIndex, c);
                }
            }
        }

        var imageData = context.createImageData(imageWidth, imageHeight);
        imageData.data.set(pixels);
        context.putImageData(imageData, 0, 0);
    } else { // zsmooth = false -> filling potentially large bricks works fastest with fillRect
        for(j = 0; j < m; j++) {
            row = z[j];
            yb.reverse();
            yb[ybi] = ypx(j + 1);
            if(yb[0] === yb[1] || yb[0] === undefined || yb[1] === undefined) {
                continue;
            }
            xi = xpx(0);
            xb = [xi, xi];
            for(i = 0; i < n; i++) {
                // build one color brick!
                xb.reverse();
                xb[xbi] = xpx(i + 1);
                if(xb[0] === xb[1] || xb[0] === undefined || xb[1] === undefined) {
                    continue;
                }
                v = row[i];
                c = setColor(v, (xb[1] - xb[0]) * (yb[1] - yb[0]));
                context.fillStyle = 'rgba(' + c.join(',') + ')';

                brickWithPadding = applyBrickPadding(trace,
                                                     xb[0],
                                                     xb[1],
                                                     yb[0],
                                                     yb[1],
                                                     i,
                                                     n,
                                                     j,
                                                     m);

                context.fillRect(brickWithPadding.x0,
                                 brickWithPadding.y0,
                                (brickWithPadding.x1 - brickWithPadding.x0),
                                (brickWithPadding.y1 - brickWithPadding.y0));
            }
        }
    }

    rcount = Math.round(rcount / pixcount);
    gcount = Math.round(gcount / pixcount);
    bcount = Math.round(bcount / pixcount);
    var avgColor = tinycolor('rgb(' + rcount + ',' + gcount + ',' + bcount + ')');

    gd._hmpixcount = (gd._hmpixcount||0) + pixcount;
    gd._hmlumcount = (gd._hmlumcount||0) + pixcount * avgColor.getLuminance();

    var image3 = plotgroup.selectAll('image')
        .data(cd);

    image3.enter().append('svg:image').attr({
        xmlns: xmlnsNamespaces.svg,
        preserveAspectRatio: 'none'
    });

    image3.attr({
        height: imageHeight,
        width: imageWidth,
        x: left,
        y: top,
        'xlink:href': canvas.toDataURL('image/png')
    });

    image3.exit().remove();
}

},{"../../components/colorscale":524,"../../constants/xmlns_namespaces":595,"../../lib":610,"../../registry":717,"./max_row_length":783,"tinycolor2":985}],785:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

module.exports = function style(gd) {
    d3.select(gd).selectAll('.hm image')
        .style('opacity', function(d) {
            return d.trace.opacity;
        });
};

},{"d3":86}],786:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Registry = require('../../registry');
var hasColumns = require('./has_columns');


module.exports = function handleXYZDefaults(traceIn, traceOut, coerce, layout) {
    var z = coerce('z');
    var x, y;

    if(z === undefined || !z.length) return 0;

    if(hasColumns(traceIn)) {
        x = coerce('x');
        y = coerce('y');

        // column z must be accompanied by 'x' and 'y' arrays
        if(!x || !y) return 0;
    }
    else {
        x = coordDefaults('x', coerce);
        y = coordDefaults('y', coerce);

        // TODO put z validation elsewhere
        if(!isValidZ(z)) return 0;

        coerce('transpose');
    }

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y'], layout);

    return traceOut.z.length;
};

function coordDefaults(coordStr, coerce) {
    var coord = coerce(coordStr),
        coordType = coord ?
            coerce(coordStr + 'type', 'array') :
            'scaled';

    if(coordType === 'scaled') {
        coerce(coordStr + '0');
        coerce('d' + coordStr);
    }

    return coord;
}

function isValidZ(z) {
    var allRowsAreArrays = true,
        oneRowIsFilled = false,
        hasOneNumber = false,
        zi;

    /*
     * Without this step:
     *
     * hasOneNumber = false breaks contour but not heatmap
     * allRowsAreArrays = false breaks contour but not heatmap
     * oneRowIsFilled = false breaks both
     */

    for(var i = 0; i < z.length; i++) {
        zi = z[i];
        if(!Array.isArray(zi)) {
            allRowsAreArrays = false;
            break;
        }
        if(zi.length > 0) oneRowIsFilled = true;
        for(var j = 0; j < zi.length; j++) {
            if(isNumeric(zi[j])) {
                hasOneNumber = true;
                break;
            }
        }
    }

    return (allRowsAreArrays && oneRowIsFilled && hasOneNumber);
}

},{"../../registry":717,"./has_columns":778,"fast-isnumeric":97}],787:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


var heatmapAttrs = require('../heatmap/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

var commonList = [
    'z',
    'x', 'x0', 'dx',
    'y', 'y0', 'dy',
    'text', 'transpose',
    'xtype', 'ytype'
];

var attrs = {};

for(var i = 0; i < commonList.length; i++) {
    var k = commonList[i];
    attrs[k] = heatmapAttrs[k];
}

extendFlat(
    attrs,
    colorscaleAttrs,
    { autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}) },
    { colorbar: colorbarAttrs }
);

module.exports = attrs;

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../heatmap/attributes":771}],788:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createHeatmap2D = require('gl-heatmap2d');
var Axes = require('../../plots/cartesian/axes');
var str2RGBArray = require('../../lib/str2rgbarray');


function Heatmap(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'heatmapgl';

    this.name = '';
    this.hoverinfo = 'all';

    this.xData = [];
    this.yData = [];
    this.zData = [];
    this.textLabels = [];

    this.idToIndex = [];
    this.bounds = [0, 0, 0, 0];

    this.options = {
        z: [],
        x: [],
        y: [],
        shape: [0, 0],
        colorLevels: [0],
        colorValues: [0, 0, 0, 1]
    };

    this.heatmap = createHeatmap2D(scene.glplot, this.options);
    this.heatmap._trace = this;
}

var proto = Heatmap.prototype;

proto.handlePick = function(pickResult) {
    var options = this.options,
        shape = options.shape,
        index = pickResult.pointId,
        xIndex = index % shape[0],
        yIndex = Math.floor(index / shape[0]),
        zIndex = index;

    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: [
            options.x[xIndex],
            options.y[yIndex],
            options.z[zIndex]
        ],
        textLabel: this.textLabels[index],
        name: this.name,
        pointIndex: [xIndex, yIndex],
        hoverinfo: this.hoverinfo
    };
};

proto.update = function(fullTrace, calcTrace) {
    var calcPt = calcTrace[0];

    this.name = fullTrace.name;
    this.hoverinfo = fullTrace.hoverinfo;

    // convert z from 2D -> 1D
    var z = calcPt.z;
    this.options.z = [].concat.apply([], z);

    var rowLen = z[0].length,
        colLen = z.length;
    this.options.shape = [rowLen, colLen];

    this.options.x = calcPt.x;
    this.options.y = calcPt.y;

    var colorOptions = convertColorscale(fullTrace);
    this.options.colorLevels = colorOptions.colorLevels;
    this.options.colorValues = colorOptions.colorValues;

    // convert text from 2D -> 1D
    this.textLabels = [].concat.apply([], fullTrace.text);

    this.heatmap.update(this.options);

    Axes.expand(this.scene.xaxis, calcPt.x);
    Axes.expand(this.scene.yaxis, calcPt.y);
};

proto.dispose = function() {
    this.heatmap.dispose();
};

function convertColorscale(fullTrace) {
    var scl = fullTrace.colorscale,
        zmin = fullTrace.zmin,
        zmax = fullTrace.zmax;

    var N = scl.length,
        domain = new Array(N),
        range = new Array(4 * N);

    for(var i = 0; i < N; i++) {
        var si = scl[i];
        var color = str2RGBArray(si[1]);

        domain[i] = zmin + si[0] * (zmax - zmin);

        for(var j = 0; j < 4; j++) {
            range[(4 * i) + j] = color[j];
        }
    }

    return {
        colorLevels: domain,
        colorValues: range
    };
}

function createHeatmap(scene, fullTrace, calcTrace) {
    var plot = new Heatmap(scene, fullTrace.uid);
    plot.update(fullTrace, calcTrace);
    return plot;
}

module.exports = createHeatmap;

},{"../../lib/str2rgbarray":624,"../../plots/cartesian/axes":642,"gl-heatmap2d":141}],789:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var HeatmapGl = {};

HeatmapGl.attributes = require('./attributes');
HeatmapGl.supplyDefaults = require('../heatmap/defaults');
HeatmapGl.colorbar = require('../heatmap/colorbar');

HeatmapGl.calc = require('../heatmap/calc');
HeatmapGl.plot = require('./convert');

HeatmapGl.moduleType = 'trace';
HeatmapGl.name = 'heatmapgl';
HeatmapGl.basePlotModule = require('../../plots/gl2d');
HeatmapGl.categories = ['gl2d', '2dMap'];
HeatmapGl.meta = {
    description: [
        'WebGL version of the heatmap trace type.'
    ].join(' ')
};

module.exports = HeatmapGl;

},{"../../plots/gl2d":678,"../heatmap/calc":772,"../heatmap/colorbar":774,"../heatmap/defaults":776,"./attributes":787,"./convert":788}],790:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var barAttrs = require('../bar/attributes');


module.exports = {
    x: {
        valType: 'data_array',
        description: [
            'Sets the sample data to be binned on the x axis.'
        ].join(' ')
    },
    y: {
        valType: 'data_array',
        description: [
            'Sets the sample data to be binned on the y axis.'
        ].join(' ')
    },

    text: barAttrs.text,
    orientation: barAttrs.orientation,

    histfunc: {
        valType: 'enumerated',
        values: ['count', 'sum', 'avg', 'min', 'max'],
        role: 'style',
        dflt: 'count',
        description: [
            'Specifies the binning function used for this histogram trace.',

            'If *count*, the histogram values are computed by counting the',
            'number of values lying inside each bin.',

            'If *sum*, *avg*, *min*, *max*,',
            'the histogram values are computed using',
            'the sum, the average, the minimum or the maximum',
            'of the values lying inside each bin respectively.'
        ].join(' ')
    },
    histnorm: {
        valType: 'enumerated',
        values: ['', 'percent', 'probability', 'density', 'probability density'],
        dflt: '',
        role: 'style',
        description: [
            'Specifies the type of normalization used for this histogram trace.',

            'If **, the span of each bar corresponds to the number of',
            'occurrences (i.e. the number of data points lying inside the bins).',

            'If *percent*, the span of each bar corresponds to the percentage',
            'of occurrences with respect to the total number of sample points',
            '(here, the sum of all bin area equals 100%).',

            'If *density*, the span of each bar corresponds to the number of',
            'occurrences in a bin divided by the size of the bin interval',
            '(here, the sum of all bin area equals the',
            'total number of sample points).',

            'If *probability density*, the span of each bar corresponds to the',
            'probability that an event will fall into the corresponding bin',
            '(here, the sum of all bin area equals 1).'
        ].join(' ')
    },

    autobinx: {
        valType: 'boolean',
        dflt: null,
        role: 'style',
        description: [
            'Determines whether or not the x axis bin attributes are picked',
            'by an algorithm. Note that this should be set to false if you',
            'want to manually set the number of bins using the attributes in',
            'xbins.'
        ].join(' ')
    },
    nbinsx: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        role: 'style',
        description: [
            'Specifies the maximum number of desired bins. This value will be used',
            'in an algorithm that will decide the optimal bin size such that the',
            'histogram best visualizes the distribution of the data.'
        ].join(' ')
    },
    xbins: makeBinsAttr('x'),

    autobiny: {
        valType: 'boolean',
        dflt: null,
        role: 'style',
        description: [
            'Determines whether or not the y axis bin attributes are picked',
            'by an algorithm. Note that this should be set to false if you',
            'want to manually set the number of bins using the attributes in',
            'ybins.'
        ].join(' ')
    },
    nbinsy: {
        valType: 'integer',
        min: 0,
        dflt: 0,
        role: 'style',
        description: [
            'Specifies the maximum number of desired bins. This value will be used',
            'in an algorithm that will decide the optimal bin size such that the',
            'histogram best visualizes the distribution of the data.'
        ].join(' ')
    },
    ybins: makeBinsAttr('y'),

    marker: barAttrs.marker,

    error_y: barAttrs.error_y,
    error_x: barAttrs.error_x,

    _deprecated: {
        bardir: barAttrs._deprecated.bardir
    }
};

function makeBinsAttr(axLetter) {
    return {
        start: {
            valType: 'any', // for date axes
            dflt: null,
            role: 'style',
            description: [
                'Sets the starting value for the', axLetter,
                'axis bins.'
            ].join(' ')
        },
        end: {
            valType: 'any', // for date axes
            dflt: null,
            role: 'style',
            description: [
                'Sets the end value for the', axLetter,
                'axis bins.'
            ].join(' ')
        },
        size: {
            valType: 'any', // for date axes
            dflt: null,
            role: 'style',
            description: [
                'Sets the step in-between value each', axLetter,
                'axis bin.'
            ].join(' ')
        }
    };
}

},{"../bar/attributes":727}],791:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = function doAvg(size, counts) {
    var nMax = size.length,
        total = 0;
    for(var i = 0; i < nMax; i++) {
        if(counts[i]) {
            size[i] /= counts[i];
            total += size[i];
        }
        else size[i] = null;
    }
    return total;
};

},{}],792:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = function handleBinDefaults(traceIn, traceOut, coerce, binDirections) {
    coerce('histnorm');

    binDirections.forEach(function(binDirection) {
        /*
         * Because date axes have string values for start and end,
         * and string options for size, we cannot validate these attributes
         * now. We will do this during calc (immediately prior to binning)
         * in ./clean_bins, and push the cleaned values back to _fullData.
         */
        coerce(binDirection + 'bins.start');
        coerce(binDirection + 'bins.end');
        coerce(binDirection + 'bins.size');
        coerce('autobin' + binDirection);
        coerce('nbins' + binDirection);
    });

    return traceOut;
};

},{}],793:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');


module.exports = {
    count: function(n, i, size) {
        size[n]++;
        return 1;
    },

    sum: function(n, i, size, counterData) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            size[n] += v;
            return v;
        }
        return 0;
    },

    avg: function(n, i, size, counterData, counts) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            size[n] += v;
            counts[n]++;
        }
        return 0;
    },

    min: function(n, i, size, counterData) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            if(!isNumeric(size[n])) {
                size[n] = v;
                return v;
            }
            else if(size[n] > v) {
                size[n] = v;
                return v - size[n];
            }
        }
        return 0;
    },

    max: function(n, i, size, counterData) {
        var v = counterData[i];
        if(isNumeric(v)) {
            v = Number(v);
            if(!isNumeric(size[n])) {
                size[n] = v;
                return v;
            }
            else if(size[n] < v) {
                size[n] = v;
                return v - size[n];
            }
        }
        return 0;
    }
};

},{"fast-isnumeric":97}],794:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var binFunctions = require('./bin_functions');
var normFunctions = require('./norm_functions');
var doAvg = require('./average');
var cleanBins = require('./clean_bins');


module.exports = function calc(gd, trace) {
    // ignore as much processing as possible (and including in autorange) if bar is not visible
    if(trace.visible !== true) return;

    // depending on orientation, set position and size axes and data ranges
    // note: this logic for choosing orientation is duplicated in graph_obj->setstyles
    var pos = [],
        size = [],
        i,
        pa = Axes.getFromId(gd,
            trace.orientation === 'h' ? (trace.yaxis || 'y') : (trace.xaxis || 'x')),
        maindata = trace.orientation === 'h' ? 'y' : 'x',
        counterdata = {x: 'y', y: 'x'}[maindata],
        calendar = trace[maindata + 'calendar'];

    cleanBins(trace, pa, maindata);

    // prepare the raw data
    var pos0 = pa.makeCalcdata(trace, maindata);
    // calculate the bins
    if((trace['autobin' + maindata] !== false) || !(maindata + 'bins' in trace)) {
        trace[maindata + 'bins'] = Axes.autoBin(pos0, pa, trace['nbins' + maindata], false, calendar);

        // copy bin info back to the source data.
        trace._input[maindata + 'bins'] = trace[maindata + 'bins'];
    }

    var binspec = trace[maindata + 'bins'],
        nonuniformBins = typeof binspec.size === 'string',
        bins = nonuniformBins ? [] : binspec,
        // make the empty bin array
        i2,
        binend,
        n,
        inc = [],
        counts = [],
        total = 0,
        norm = trace.histnorm,
        func = trace.histfunc,
        densitynorm = norm.indexOf('density') !== -1,
        extremefunc = func === 'max' || func === 'min',
        sizeinit = extremefunc ? null : 0,
        binfunc = binFunctions.count,
        normfunc = normFunctions[norm],
        doavg = false,
        pr2c = function(v) { return pa.r2c(v, 0, calendar); },
        rawCounterData;

    if(Array.isArray(trace[counterdata]) && func !== 'count') {
        rawCounterData = trace[counterdata];
        doavg = func === 'avg';
        binfunc = binFunctions[func];
    }

    // create the bins (and any extra arrays needed)
    // assume more than 5000 bins is an error, so we don't crash the browser
    i = pr2c(binspec.start);

    // decrease end a little in case of rounding errors
    binend = pr2c(binspec.end) + (i - Axes.tickIncrement(i, binspec.size, false, calendar)) / 1e6;

    while(i < binend && pos.length < 5000) {
        i2 = Axes.tickIncrement(i, binspec.size, false, calendar);
        pos.push((i + i2) / 2);
        size.push(sizeinit);
        // nonuniform bins (like months) we need to search,
        // rather than straight calculate the bin we're in
        if(nonuniformBins) bins.push(i);
        // nonuniform bins also need nonuniform normalization factors
        if(densitynorm) inc.push(1 / (i2 - i));
        if(doavg) counts.push(0);
        i = i2;
    }

    // for date axes we need bin bounds to be calcdata. For nonuniform bins
    // we already have this, but uniform with start/end/size they're still strings.
    if(!nonuniformBins && pa.type === 'date') {
        bins = {
            start: pr2c(bins.start),
            end: pr2c(bins.end),
            size: bins.size
        };
    }

    var nMax = size.length;
    // bin the data
    for(i = 0; i < pos0.length; i++) {
        n = Lib.findBin(pos0[i], bins);
        if(n >= 0 && n < nMax) total += binfunc(n, i, size, rawCounterData, counts);
    }

    // average and/or normalize the data, if needed
    if(doavg) total = doAvg(size, counts);
    if(normfunc) normfunc(size, total, inc);

    var serieslen = Math.min(pos.length, size.length),
        cd = [],
        firstNonzero = 0,
        lastNonzero = serieslen - 1;
    // look for empty bins at the ends to remove, so autoscale omits them
    for(i = 0; i < serieslen; i++) {
        if(size[i]) {
            firstNonzero = i;
            break;
        }
    }
    for(i = serieslen - 1; i > firstNonzero; i--) {
        if(size[i]) {
            lastNonzero = i;
            break;
        }
    }

    // create the "calculated data" to plot
    for(i = firstNonzero; i <= lastNonzero; i++) {
        if((isNumeric(pos[i]) && isNumeric(size[i]))) {
            cd.push({p: pos[i], s: size[i], b: 0});
        }
    }

    return cd;
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"./average":791,"./bin_functions":793,"./clean_bins":795,"./norm_functions":798,"fast-isnumeric":97}],795:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';
var isNumeric = require('fast-isnumeric');
var cleanDate = require('../../lib').cleanDate;
var constants = require('../../constants/numerical');
var ONEDAY = constants.ONEDAY;
var BADNUM = constants.BADNUM;

/*
 * cleanBins: validate attributes autobin[xy] and [xy]bins.(start, end, size)
 * Mutates trace so all these attributes are valid.
 *
 * Normally this kind of thing would happen during supplyDefaults, but
 * in this case we need to know the axis type, and axis type isn't set until
 * after trace supplyDefaults are completed. So this gets called during the
 * calc step, when data are inserted into bins.
 */
module.exports = function cleanBins(trace, ax, binDirection) {
    var axType = ax.type,
        binAttr = binDirection + 'bins',
        bins = trace[binAttr];

    if(!bins) bins = trace[binAttr] = {};

    var cleanBound = (axType === 'date') ?
        function(v) { return (v || v === 0) ? cleanDate(v, BADNUM, bins.calendar) : null; } :
        function(v) { return isNumeric(v) ? Number(v) : null; };

    bins.start = cleanBound(bins.start);
    bins.end = cleanBound(bins.end);

    // logic for bin size is very similar to dtick (cartesian/tick_value_defaults)
    // but without the extra string options for log axes
    // ie the only strings we accept are M<n> for months
    var sizeDflt = (axType === 'date') ? ONEDAY : 1,
        binSize = bins.size;

    if(isNumeric(binSize)) {
        bins.size = (binSize > 0) ? Number(binSize) : sizeDflt;
    }
    else if(typeof binSize !== 'string') {
        bins.size = sizeDflt;
    }
    else {
        // date special case: "M<n>" gives bins every (integer) n months
        var prefix = binSize.charAt(0),
            sizeNum = binSize.substr(1);

        sizeNum = isNumeric(sizeNum) ? Number(sizeNum) : 0;
        if((sizeNum <= 0) || !(
                axType === 'date' && prefix === 'M' && sizeNum === Math.round(sizeNum)
            )) {
            bins.size = sizeDflt;
        }
    }

    var autoBinAttr = 'autobin' + binDirection;

    if(typeof trace[autoBinAttr] !== 'boolean') {
        trace[autoBinAttr] = !(
            (bins.start || bins.start === 0) &&
            (bins.end || bins.end === 0)
        );
    }

    if(!trace[autoBinAttr]) delete trace['nbins' + binDirection];
};

},{"../../constants/numerical":593,"../../lib":610,"fast-isnumeric":97}],796:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var Color = require('../../components/color');

var handleBinDefaults = require('./bin_defaults');
var handleStyleDefaults = require('../bar/style_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var x = coerce('x'),
        y = coerce('y');

    coerce('text');

    var orientation = coerce('orientation', (y && !x) ? 'h' : 'v'),
        sample = traceOut[orientation === 'v' ? 'x' : 'y'];

    if(!(sample && sample.length)) {
        traceOut.visible = false;
        return;
    }

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y'], layout);

    var hasAggregationData = traceOut[orientation === 'h' ? 'x' : 'y'];
    if(hasAggregationData) coerce('histfunc');

    var binDirections = (orientation === 'h') ? ['y'] : ['x'];
    handleBinDefaults(traceIn, traceOut, coerce, binDirections);

    handleStyleDefaults(traceIn, traceOut, coerce, defaultColor, layout);

    // override defaultColor for error bars with defaultLine
    errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'y'});
    errorBarsSupplyDefaults(traceIn, traceOut, Color.defaultLine, {axis: 'x', inherit: 'y'});
};

},{"../../components/color":510,"../../components/errorbars/defaults":538,"../../lib":610,"../../registry":717,"../bar/style_defaults":738,"./attributes":790,"./bin_defaults":792}],797:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

/**
 * Histogram has its own attribute, defaults and calc steps,
 * but uses bar's plot to display
 * and bar's setPositions for stacking and grouping
 */

/**
 * histogram errorBarsOK is debatable, but it's put in for backward compat.
 * there are use cases for it - sqrt for a simple histogram works right now,
 * constant and % work but they're not so meaningful. I guess it could be cool
 * to allow quadrature combination of errors in summed histograms...
 */


var Histogram = {};

Histogram.attributes = require('./attributes');
Histogram.layoutAttributes = require('../bar/layout_attributes');
Histogram.supplyDefaults = require('./defaults');
Histogram.supplyLayoutDefaults = require('../bar/layout_defaults');
Histogram.calc = require('./calc');
Histogram.setPositions = require('../bar/set_positions');
Histogram.plot = require('../bar/plot');
Histogram.style = require('../bar/style');
Histogram.colorbar = require('../scatter/colorbar');
Histogram.hoverPoints = require('../bar/hover');

Histogram.moduleType = 'trace';
Histogram.name = 'histogram';
Histogram.basePlotModule = require('../../plots/cartesian');
Histogram.categories = ['cartesian', 'bar', 'histogram', 'oriented', 'errorBarsOK', 'showLegend'];
Histogram.meta = {
    description: [
        'The sample data from which statistics are computed is set in `x`',
        'for vertically spanning histograms and',
        'in `y` for horizontally spanning histograms.',
        'Binning options are set `xbins` and `ybins` respectively',
        'if no aggregation data is provided.'
    ].join(' ')
};

module.exports = Histogram;

},{"../../plots/cartesian":650,"../bar/hover":730,"../bar/layout_attributes":732,"../bar/layout_defaults":733,"../bar/plot":734,"../bar/set_positions":735,"../bar/style":737,"../scatter/colorbar":837,"./attributes":790,"./calc":794,"./defaults":796}],798:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = {
    percent: function(size, total) {
        var nMax = size.length,
            norm = 100 / total;
        for(var n = 0; n < nMax; n++) size[n] *= norm;
    },
    probability: function(size, total) {
        var nMax = size.length;
        for(var n = 0; n < nMax; n++) size[n] /= total;
    },
    density: function(size, total, inc, yinc) {
        var nMax = size.length;
        yinc = yinc || 1;
        for(var n = 0; n < nMax; n++) size[n] *= inc[n] * yinc;
    },
    'probability density': function(size, total, inc, yinc) {
        var nMax = size.length;
        if(yinc) total /= yinc;
        for(var n = 0; n < nMax; n++) size[n] *= inc[n] / total;
    }
};

},{}],799:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var histogramAttrs = require('../histogram/attributes');
var heatmapAttrs = require('../heatmap/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

module.exports = extendFlat({},
    {
        x: histogramAttrs.x,
        y: histogramAttrs.y,

        z: {
            valType: 'data_array',
            description: 'Sets the aggregation data.'
        },
        marker: {
            color: {
                valType: 'data_array',
                description: 'Sets the aggregation data.'
            }
        },

        histnorm: histogramAttrs.histnorm,
        histfunc: histogramAttrs.histfunc,
        autobinx: histogramAttrs.autobinx,
        nbinsx: histogramAttrs.nbinsx,
        xbins: histogramAttrs.xbins,
        autobiny: histogramAttrs.autobiny,
        nbinsy: histogramAttrs.nbinsy,
        ybins: histogramAttrs.ybins,

        xgap: heatmapAttrs.xgap,
        ygap: heatmapAttrs.ygap,
        zsmooth: heatmapAttrs.zsmooth
    },
    colorscaleAttrs,
    { autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale, {dflt: false}) },
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../heatmap/attributes":771,"../histogram/attributes":790}],800:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');

var binFunctions = require('../histogram/bin_functions');
var normFunctions = require('../histogram/norm_functions');
var doAvg = require('../histogram/average');
var cleanBins = require('../histogram/clean_bins');


module.exports = function calc(gd, trace) {
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        x = trace.x ? xa.makeCalcdata(trace, 'x') : [],
        ya = Axes.getFromId(gd, trace.yaxis || 'y'),
        y = trace.y ? ya.makeCalcdata(trace, 'y') : [],
        xcalendar = trace.xcalendar,
        ycalendar = trace.ycalendar,
        xr2c = function(v) { return xa.r2c(v, 0, xcalendar); },
        yr2c = function(v) { return ya.r2c(v, 0, ycalendar); },
        xc2r = function(v) { return xa.c2r(v, 0, xcalendar); },
        yc2r = function(v) { return ya.c2r(v, 0, ycalendar); },
        x0,
        dx,
        y0,
        dy,
        z,
        i;

    cleanBins(trace, xa, 'x');
    cleanBins(trace, ya, 'y');

    var serieslen = Math.min(x.length, y.length);
    if(x.length > serieslen) x.splice(serieslen, x.length - serieslen);
    if(y.length > serieslen) y.splice(serieslen, y.length - serieslen);


    // calculate the bins
    if(trace.autobinx || !('xbins' in trace)) {
        trace.xbins = Axes.autoBin(x, xa, trace.nbinsx, '2d', xcalendar);
        if(trace.type === 'histogram2dcontour') {
            // the "true" last argument reverses the tick direction (which we can't
            // just do with a minus sign because of month bins)
            trace.xbins.start = xc2r(Axes.tickIncrement(
                xr2c(trace.xbins.start), trace.xbins.size, true, xcalendar));
            trace.xbins.end = xc2r(Axes.tickIncrement(
                xr2c(trace.xbins.end), trace.xbins.size, false, xcalendar));
        }

        // copy bin info back to the source data.
        trace._input.xbins = trace.xbins;
    }
    if(trace.autobiny || !('ybins' in trace)) {
        trace.ybins = Axes.autoBin(y, ya, trace.nbinsy, '2d', ycalendar);
        if(trace.type === 'histogram2dcontour') {
            trace.ybins.start = yc2r(Axes.tickIncrement(
                yr2c(trace.ybins.start), trace.ybins.size, true, ycalendar));
            trace.ybins.end = yc2r(Axes.tickIncrement(
                yr2c(trace.ybins.end), trace.ybins.size, false, ycalendar));
        }
        trace._input.ybins = trace.ybins;
    }

    // make the empty bin array & scale the map
    z = [];
    var onecol = [],
        zerocol = [],
        nonuniformBinsX = (typeof(trace.xbins.size) === 'string'),
        nonuniformBinsY = (typeof(trace.ybins.size) === 'string'),
        xbins = nonuniformBinsX ? [] : trace.xbins,
        ybins = nonuniformBinsY ? [] : trace.ybins,
        total = 0,
        n,
        m,
        counts = [],
        norm = trace.histnorm,
        func = trace.histfunc,
        densitynorm = (norm.indexOf('density') !== -1),
        extremefunc = (func === 'max' || func === 'min'),
        sizeinit = (extremefunc ? null : 0),
        binfunc = binFunctions.count,
        normfunc = normFunctions[norm],
        doavg = false,
        xinc = [],
        yinc = [];

    // set a binning function other than count?
    // for binning functions: check first for 'z',
    // then 'mc' in case we had a colored scatter plot
    // and want to transfer these colors to the 2D histo
    // TODO: this is why we need a data picker in the popover...
    var rawCounterData = ('z' in trace) ?
        trace.z :
        (('marker' in trace && Array.isArray(trace.marker.color)) ?
            trace.marker.color : '');
    if(rawCounterData && func !== 'count') {
        doavg = func === 'avg';
        binfunc = binFunctions[func];
    }

    // decrease end a little in case of rounding errors
    var binspec = trace.xbins,
        binStart = xr2c(binspec.start),
        binEnd = xr2c(binspec.end) +
            (binStart - Axes.tickIncrement(binStart, binspec.size, false, xcalendar)) / 1e6;

    for(i = binStart; i < binEnd; i = Axes.tickIncrement(i, binspec.size, false, xcalendar)) {
        onecol.push(sizeinit);
        if(nonuniformBinsX) xbins.push(i);
        if(doavg) zerocol.push(0);
    }
    if(nonuniformBinsX) xbins.push(i);

    var nx = onecol.length;
    x0 = trace.xbins.start;
    var x0c = xr2c(x0);
    dx = (i - x0c) / nx;
    x0 = xc2r(x0c + dx / 2);

    binspec = trace.ybins;
    binStart = yr2c(binspec.start);
    binEnd = yr2c(binspec.end) +
        (binStart - Axes.tickIncrement(binStart, binspec.size, false, ycalendar)) / 1e6;

    for(i = binStart; i < binEnd; i = Axes.tickIncrement(i, binspec.size, false, ycalendar)) {
        z.push(onecol.concat());
        if(nonuniformBinsY) ybins.push(i);
        if(doavg) counts.push(zerocol.concat());
    }
    if(nonuniformBinsY) ybins.push(i);

    var ny = z.length;
    y0 = trace.ybins.start;
    var y0c = yr2c(y0);
    dy = (i - y0c) / ny;
    y0 = yc2r(y0c + dy / 2);

    if(densitynorm) {
        xinc = onecol.map(function(v, i) {
            if(nonuniformBinsX) return 1 / (xbins[i + 1] - xbins[i]);
            return 1 / dx;
        });
        yinc = z.map(function(v, i) {
            if(nonuniformBinsY) return 1 / (ybins[i + 1] - ybins[i]);
            return 1 / dy;
        });
    }

    // for date axes we need bin bounds to be calcdata. For nonuniform bins
    // we already have this, but uniform with start/end/size they're still strings.
    if(!nonuniformBinsX && xa.type === 'date') {
        xbins = {
            start: xr2c(xbins.start),
            end: xr2c(xbins.end),
            size: xbins.size
        };
    }
    if(!nonuniformBinsY && ya.type === 'date') {
        ybins = {
            start: yr2c(ybins.start),
            end: yr2c(ybins.end),
            size: ybins.size
        };
    }


    // put data into bins
    for(i = 0; i < serieslen; i++) {
        n = Lib.findBin(x[i], xbins);
        m = Lib.findBin(y[i], ybins);
        if(n >= 0 && n < nx && m >= 0 && m < ny) {
            total += binfunc(n, i, z[m], rawCounterData, counts[m]);
        }
    }
    // normalize, if needed
    if(doavg) {
        for(m = 0; m < ny; m++) total += doAvg(z[m], counts[m]);
    }
    if(normfunc) {
        for(m = 0; m < ny; m++) normfunc(z[m], total, xinc, yinc[m]);
    }

    return {
        x: x,
        x0: x0,
        dx: dx,
        y: y,
        y0: y0,
        dy: dy,
        z: z
    };
};

},{"../../lib":610,"../../plots/cartesian/axes":642,"../histogram/average":791,"../histogram/bin_functions":793,"../histogram/clean_bins":795,"../histogram/norm_functions":798}],801:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var handleSampleDefaults = require('./sample_defaults');
var colorscaleDefaults = require('../../components/colorscale/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    handleSampleDefaults(traceIn, traceOut, coerce, layout);

    var zsmooth = coerce('zsmooth');
    if(zsmooth === false) {
        // ensure that xgap and ygap are coerced only when zsmooth allows them to have an effect.
        coerce('xgap');
        coerce('ygap');
    }

    colorscaleDefaults(
        traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'z'}
    );
};

},{"../../components/colorscale/defaults":519,"../../lib":610,"./attributes":799,"./sample_defaults":803}],802:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Histogram2D = {};

Histogram2D.attributes = require('./attributes');
Histogram2D.supplyDefaults = require('./defaults');
Histogram2D.calc = require('../heatmap/calc');
Histogram2D.plot = require('../heatmap/plot');
Histogram2D.colorbar = require('../heatmap/colorbar');
Histogram2D.style = require('../heatmap/style');
Histogram2D.hoverPoints = require('../heatmap/hover');

Histogram2D.moduleType = 'trace';
Histogram2D.name = 'histogram2d';
Histogram2D.basePlotModule = require('../../plots/cartesian');
Histogram2D.categories = ['cartesian', '2dMap', 'histogram'];
Histogram2D.meta = {
    hrName: 'histogram_2d',
    description: [
        'The sample data from which statistics are computed is set in `x`',
        'and `y` (where `x` and `y` represent marginal distributions,',
        'binning is set in `xbins` and `ybins` in this case)',
        'or `z` (where `z` represent the 2D distribution and binning set,',
        'binning is set by `x` and `y` in this case).',
        'The resulting distribution is visualized as a heatmap.'
    ].join(' ')
};

module.exports = Histogram2D;

},{"../../plots/cartesian":650,"../heatmap/calc":772,"../heatmap/colorbar":774,"../heatmap/hover":779,"../heatmap/plot":784,"../heatmap/style":785,"./attributes":799,"./defaults":801}],803:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var handleBinDefaults = require('../histogram/bin_defaults');


module.exports = function handleSampleDefaults(traceIn, traceOut, coerce, layout) {
    var x = coerce('x'),
        y = coerce('y');

    // we could try to accept x0 and dx, etc...
    // but that's a pretty weird use case.
    // for now require both x and y explicitly specified.
    if(!(x && x.length && y && y.length)) {
        traceOut.visible = false;
        return;
    }

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y'], layout);

    // if marker.color is an array, we can use it in aggregation instead of z
    var hasAggregationData = coerce('z') || coerce('marker.color');

    if(hasAggregationData) coerce('histfunc');

    var binDirections = ['x', 'y'];
    handleBinDefaults(traceIn, traceOut, coerce, binDirections);
};

},{"../../registry":717,"../histogram/bin_defaults":792}],804:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var histogram2dAttrs = require('../histogram2d/attributes');
var contourAttrs = require('../contour/attributes');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

module.exports = extendFlat({}, {
    x: histogram2dAttrs.x,
    y: histogram2dAttrs.y,
    z: histogram2dAttrs.z,
    marker: histogram2dAttrs.marker,

    histnorm: histogram2dAttrs.histnorm,
    histfunc: histogram2dAttrs.histfunc,
    autobinx: histogram2dAttrs.autobinx,
    nbinsx: histogram2dAttrs.nbinsx,
    xbins: histogram2dAttrs.xbins,
    autobiny: histogram2dAttrs.autobiny,
    nbinsy: histogram2dAttrs.nbinsy,
    ybins: histogram2dAttrs.ybins,

    autocontour: contourAttrs.autocontour,
    ncontours: contourAttrs.ncontours,
    contours: contourAttrs.contours,
    line: contourAttrs.line
},
    colorscaleAttrs,
    { colorbar: colorbarAttrs }
);

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../contour/attributes":758,"../histogram2d/attributes":799}],805:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var handleSampleDefaults = require('../histogram2d/sample_defaults');
var handleStyleDefaults = require('../contour/style_defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    handleSampleDefaults(traceIn, traceOut, coerce, layout);

    var contourStart = Lib.coerce2(traceIn, traceOut, attributes, 'contours.start'),
        contourEnd = Lib.coerce2(traceIn, traceOut, attributes, 'contours.end'),
        autocontour = coerce('autocontour', !(contourStart && contourEnd));

    if(autocontour) coerce('ncontours');
    else coerce('contours.size');

    handleStyleDefaults(traceIn, traceOut, coerce, layout);
};

},{"../../lib":610,"../contour/style_defaults":770,"../histogram2d/sample_defaults":803,"./attributes":804}],806:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Histogram2dContour = {};

Histogram2dContour.attributes = require('./attributes');
Histogram2dContour.supplyDefaults = require('./defaults');
Histogram2dContour.calc = require('../contour/calc');
Histogram2dContour.plot = require('../contour/plot');
Histogram2dContour.style = require('../contour/style');
Histogram2dContour.colorbar = require('../contour/colorbar');
Histogram2dContour.hoverPoints = require('../contour/hover');

Histogram2dContour.moduleType = 'trace';
Histogram2dContour.name = 'histogram2dcontour';
Histogram2dContour.basePlotModule = require('../../plots/cartesian');
Histogram2dContour.categories = ['cartesian', '2dMap', 'contour', 'histogram'];
Histogram2dContour.meta = {
    hrName: 'histogram_2d_contour',
    description: [
        'The sample data from which statistics are computed is set in `x`',
        'and `y` (where `x` and `y` represent marginal distributions,',
        'binning is set in `xbins` and `ybins` in this case)',
        'or `z` (where `z` represent the 2D distribution and binning set,',
        'binning is set by `x` and `y` in this case).',
        'The resulting distribution is visualized as a contour plot.'
    ].join(' ')
};

module.exports = Histogram2dContour;

},{"../../plots/cartesian":650,"../contour/calc":759,"../contour/colorbar":760,"../contour/hover":764,"../contour/plot":768,"../contour/style":769,"./attributes":804,"./defaults":805}],807:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');
var surfaceAtts = require('../surface/attributes');

var extendFlat = require('../../lib/extend').extendFlat;


module.exports = {
    x: {
        valType: 'data_array',
        description: [
            'Sets the X coordinates of the vertices. The nth element of vectors `x`, `y` and `z`',
            'jointly represent the X, Y and Z coordinates of the nth vertex.'
        ].join(' ')
    },
    y: {
        valType: 'data_array',
        description: [
            'Sets the Y coordinates of the vertices. The nth element of vectors `x`, `y` and `z`',
            'jointly represent the X, Y and Z coordinates of the nth vertex.'
        ].join(' ')
    },
    z: {
        valType: 'data_array',
        description: [
            'Sets the Z coordinates of the vertices. The nth element of vectors `x`, `y` and `z`',
            'jointly represent the X, Y and Z coordinates of the nth vertex.'
        ].join(' ')
    },

    i: {
        valType: 'data_array',
        description: [
            'A vector of vertex indices, i.e. integer values between 0 and the length of the vertex',
            'vectors, representing the *first* vertex of a triangle. For example, `{i[m], j[m], k[m]}`',
            'together represent face m (triangle m) in the mesh, where `i[m] = n` points to the triplet',
            '`{x[n], y[n], z[n]}` in the vertex arrays. Therefore, each element in `i` represents a',
            'point in space, which is the first vertex of a triangle.'
        ].join(' ')
    },
    j: {
        valType: 'data_array',
        description: [
            'A vector of vertex indices, i.e. integer values between 0 and the length of the vertex',
            'vectors, representing the *second* vertex of a triangle. For example, `{i[m], j[m], k[m]}` ',
            'together represent face m (triangle m) in the mesh, where `j[m] = n` points to the triplet',
            '`{x[n], y[n], z[n]}` in the vertex arrays. Therefore, each element in `j` represents a',
            'point in space, which is the second vertex of a triangle.'
        ].join(' ')

    },
    k: {
        valType: 'data_array',
        description: [
            'A vector of vertex indices, i.e. integer values between 0 and the length of the vertex',
            'vectors, representing the *third* vertex of a triangle. For example, `{i[m], j[m], k[m]}`',
            'together represent face m (triangle m) in the mesh, where `k[m] = n` points to the triplet ',
            '`{x[n], y[n], z[n]}` in the vertex arrays. Therefore, each element in `k` represents a',
            'point in space, which is the third vertex of a triangle.'
        ].join(' ')

    },

    delaunayaxis: {
        valType: 'enumerated',
        role: 'info',
        values: [ 'x', 'y', 'z' ],
        dflt: 'z',
        description: [
            'Sets the Delaunay axis, which is the axis that is perpendicular to the surface of the',
            'Delaunay triangulation.',
            'It has an effect if `i`, `j`, `k` are not provided and `alphahull` is set to indicate',
            'Delaunay triangulation.'
        ].join(' ')
    },

    alphahull: {
        valType: 'number',
        role: 'style',
        dflt: -1,
        description: [
            'Determines how the mesh surface triangles are derived from the set of',
            'vertices (points) represented by the `x`, `y` and `z` arrays, if',
            'the `i`, `j`, `k` arrays are not supplied.',
            'For general use of `mesh3d` it is preferred that `i`, `j`, `k` are',
            'supplied.',

            'If *-1*, Delaunay triangulation is used, which is mainly suitable if the',
            'mesh is a single, more or less layer surface that is perpendicular to `delaunayaxis`.',
            'In case the `delaunayaxis` intersects the mesh surface at more than one point',
            'it will result triangles that are very long in the dimension of `delaunayaxis`.',

            'If *>0*, the alpha-shape algorithm is used. In this case, the positive `alphahull` value',
            'signals the use of the alpha-shape algorithm, _and_ its value',
            'acts as the parameter for the mesh fitting.',

            'If *0*,  the convex-hull algorithm is used. It is suitable for convex bodies',
            'or if the intention is to enclose the `x`, `y` and `z` point set into a convex',
            'hull.'
        ].join(' ')
    },

    intensity: {
        valType: 'data_array',
        description: [
            'Sets the vertex intensity values,',
            'used for plotting fields on meshes'
        ].join(' ')
    },

    // Color field
    color: {
        valType: 'color',
        role: 'style',
        description: 'Sets the color of the whole mesh'
    },
    vertexcolor: {
        valType: 'data_array',  // FIXME: this should be a color array
        role: 'style',
        description: [
            'Sets the color of each vertex',
            'Overrides *color*.'
        ].join(' ')
    },
    facecolor: {
        valType: 'data_array',
        role: 'style',
        description: [
            'Sets the color of each face',
            'Overrides *color* and *vertexcolor*.'
        ].join(' ')
    },

    // Opacity
    opacity: extendFlat({}, surfaceAtts.opacity),

    // Flat shaded mode
    flatshading: {
        valType: 'boolean',
        role: 'style',
        dflt: false,
        description: [
            'Determines whether or not normal smoothing is applied to the meshes,',
            'creating meshes with an angular, low-poly look via flat reflections.'
        ].join(' ')
    },

    contour: {
        show: extendFlat({}, surfaceAtts.contours.x.show, {
            description: [
                'Sets whether or not dynamic contours are shown on hover'
            ].join(' ')
        }),
        color: extendFlat({}, surfaceAtts.contours.x.color),
        width: extendFlat({}, surfaceAtts.contours.x.width)
    },

    colorscale: colorscaleAttrs.colorscale,
    reversescale: colorscaleAttrs.reversescale,
    showscale: colorscaleAttrs.showscale,
    colorbar: colorbarAttrs,

    lightposition: {
        'x': extendFlat({}, surfaceAtts.lightposition.x, {dflt: 1e5}),
        'y': extendFlat({}, surfaceAtts.lightposition.y, {dflt: 1e5}),
        'z': extendFlat({}, surfaceAtts.lightposition.z, {dflt: 0})
    },
    lighting: extendFlat({}, {
        vertexnormalsepsilon: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 1,
            dflt: 1e-12, // otherwise finely tessellated things eg. the brain will have no specular light reflection
            description: 'Epsilon for vertex normals calculation avoids math issues arising from degenerate geometry.'
        },
        facenormalsepsilon: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 1,
            dflt: 1e-6, // even the brain model doesn't appear to need finer than this
            description: 'Epsilon for face normals calculation avoids math issues arising from degenerate geometry.'
        }
    }, surfaceAtts.lighting)
};

},{"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603,"../surface/attributes":890}],808:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createMesh = require('gl-mesh3d');
var tinycolor = require('tinycolor2');
var triangulate = require('delaunay-triangulate');
var alphaShape = require('alpha-shape');
var convexHull = require('convex-hull');

var str2RgbaArray = require('../../lib/str2rgbarray');


function Mesh3DTrace(scene, mesh, uid) {
    this.scene = scene;
    this.uid = uid;
    this.mesh = mesh;
    this.name = '';
    this.color = '#fff';
    this.data = null;
    this.showContour = false;
}

var proto = Mesh3DTrace.prototype;

proto.handlePick = function(selection) {
    if(selection.object === this.mesh) {
        var selectIndex = selection.data.index;

        selection.traceCoordinate = [
            this.data.x[selectIndex],
            this.data.y[selectIndex],
            this.data.z[selectIndex]
        ];

        return true;
    }
};

function parseColorScale(colorscale) {
    return colorscale.map(function(elem) {
        var index = elem[0];
        var color = tinycolor(elem[1]);
        var rgb = color.toRgb();
        return {
            index: index,
            rgb: [rgb.r, rgb.g, rgb.b, 1]
        };
    });
}

function parseColorArray(colors) {
    return colors.map(str2RgbaArray);
}

function zip3(x, y, z) {
    var result = new Array(x.length);
    for(var i = 0; i < x.length; ++i) {
        result[i] = [x[i], y[i], z[i]];
    }
    return result;
}

proto.update = function(data) {
    var scene = this.scene,
        layout = scene.fullSceneLayout;

    this.data = data;

    // Unpack position data
    function toDataCoords(axis, coord, scale, calendar) {
        return coord.map(function(x) {
            return axis.d2l(x, 0, calendar) * scale;
        });
    }

    var positions = zip3(
        toDataCoords(layout.xaxis, data.x, scene.dataScale[0], data.xcalendar),
        toDataCoords(layout.yaxis, data.y, scene.dataScale[1], data.ycalendar),
        toDataCoords(layout.zaxis, data.z, scene.dataScale[2], data.zcalendar));

    var cells;
    if(data.i && data.j && data.k) {
        cells = zip3(data.i, data.j, data.k);
    }
    else if(data.alphahull === 0) {
        cells = convexHull(positions);
    }
    else if(data.alphahull > 0) {
        cells = alphaShape(data.alphahull, positions);
    }
    else {
        var d = ['x', 'y', 'z'].indexOf(data.delaunayaxis);
        cells = triangulate(positions.map(function(c) {
            return [c[(d + 1) % 3], c[(d + 2) % 3]];
        }));
    }

    var config = {
        positions: positions,
        cells: cells,
        lightPosition: [data.lightposition.x, data.lightposition.y, data.lightposition.z],
        ambient: data.lighting.ambient,
        diffuse: data.lighting.diffuse,
        specular: data.lighting.specular,
        roughness: data.lighting.roughness,
        fresnel: data.lighting.fresnel,
        vertexNormalsEpsilon: data.lighting.vertexnormalsepsilon,
        faceNormalsEpsilon: data.lighting.facenormalsepsilon,
        opacity: data.opacity,
        contourEnable: data.contour.show,
        contourColor: str2RgbaArray(data.contour.color).slice(0, 3),
        contourWidth: data.contour.width,
        useFacetNormals: data.flatshading
    };

    if(data.intensity) {
        this.color = '#fff';
        config.vertexIntensity = data.intensity;
        config.colormap = parseColorScale(data.colorscale);
    }
    else if(data.vertexcolor) {
        this.color = data.vertexcolors[0];
        config.vertexColors = parseColorArray(data.vertexcolor);
    }
    else if(data.facecolor) {
        this.color = data.facecolor[0];
        config.cellColors = parseColorArray(data.facecolor);
    }
    else {
        this.color = data.color;
        config.meshColor = str2RgbaArray(data.color);
    }

    // Update mesh
    this.mesh.update(config);
};

proto.dispose = function() {
    this.scene.glplot.remove(this.mesh);
    this.mesh.dispose();
};

function createMesh3DTrace(scene, data) {
    var gl = scene.glplot.gl;
    var mesh = createMesh({gl: gl});
    var result = new Mesh3DTrace(scene, mesh, data.uid);
    result.update(data);
    scene.glplot.add(mesh);
    return result;
}

module.exports = createMesh3DTrace;

},{"../../lib/str2rgbarray":624,"alpha-shape":7,"convex-hull":74,"delaunay-triangulate":88,"gl-mesh3d":180,"tinycolor2":985}],809:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');
var colorbarDefaults = require('../../components/colorbar/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    // read in face/vertex properties
    function readComponents(array) {
        var ret = array.map(function(attr) {
            var result = coerce(attr);

            if(result && Array.isArray(result)) return result;
            return null;
        });

        return ret.every(function(x) {
            return x && x.length === ret[0].length;
        }) && ret;
    }

    var coords = readComponents(['x', 'y', 'z']);
    var indices = readComponents(['i', 'j', 'k']);

    if(!coords) {
        traceOut.visible = false;
        return;
    }

    if(indices) {
        // otherwise, convert all face indices to ints
        indices.forEach(function(index) {
            for(var i = 0; i < index.length; ++i) index[i] |= 0;
        });
    }

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y', 'z'], layout);

    // Coerce remaining properties
    [
        'lighting.ambient',
        'lighting.diffuse',
        'lighting.specular',
        'lighting.roughness',
        'lighting.fresnel',
        'lighting.vertexnormalsepsilon',
        'lighting.facenormalsepsilon',
        'lightposition.x',
        'lightposition.y',
        'lightposition.z',
        'contour.show',
        'contour.color',
        'contour.width',
        'colorscale',
        'reversescale',
        'flatshading',
        'alphahull',
        'delaunayaxis',
        'opacity'
    ].forEach(function(x) { coerce(x); });

    if('intensity' in traceIn) {
        coerce('intensity');
        coerce('showscale', true);
    }
    else {
        traceOut.showscale = false;

        if('vertexcolor' in traceIn) coerce('vertexcolor');
        else if('facecolor' in traceIn) coerce('facecolor');
        else coerce('color', defaultColor);
    }

    if(traceOut.reversescale) {
        traceOut.colorscale = traceOut.colorscale.map(function(si) {
            return [1 - si[0], si[1]];
        }).reverse();
    }

    if(traceOut.showscale) {
        colorbarDefaults(traceIn, traceOut, layout);
    }
};

},{"../../components/colorbar/defaults":512,"../../lib":610,"../../registry":717,"./attributes":807}],810:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Mesh3D = {};

Mesh3D.attributes = require('./attributes');
Mesh3D.supplyDefaults = require('./defaults');
Mesh3D.colorbar = require('../heatmap/colorbar');
Mesh3D.plot = require('./convert');

Mesh3D.moduleType = 'trace';
Mesh3D.name = 'mesh3d',
Mesh3D.basePlotModule = require('../../plots/gl3d');
Mesh3D.categories = ['gl3d'];
Mesh3D.meta = {
    description: [
        'Draws sets of triangles with coordinates given by',
        'three 1-dimensional arrays in `x`, `y`, `z` and',
        '(1) a sets of `i`, `j`, `k` indices',
        '(2) Delaunay triangulation or',
        '(3) the Alpha-shape algorithm or',
        '(4) the Convex-hull algorithm'
    ].join(' ')
};

module.exports = Mesh3D;

},{"../../plots/gl3d":681,"../heatmap/colorbar":774,"./attributes":807,"./convert":808,"./defaults":809}],811:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var scatterAttrs = require('../scatter/attributes');

var INCREASING_COLOR = '#3D9970';
var DECREASING_COLOR = '#FF4136';

var lineAttrs = scatterAttrs.line;

var directionAttrs = {
    name: {
        valType: 'string',
        role: 'info',
        description: [
            'Sets the segment name.',
            'The segment name appear as the legend item and on hover.'
        ].join(' ')
    },

    showlegend: {
        valType: 'boolean',
        role: 'info',
        dflt: true,
        description: [
            'Determines whether or not an item corresponding to this',
            'segment is shown in the legend.'
        ].join(' ')
    },

    line: {
        color: Lib.extendFlat({}, lineAttrs.color),
        width: Lib.extendFlat({}, lineAttrs.width),
        dash: Lib.extendFlat({}, lineAttrs.dash),
    }
};

module.exports = {

    x: {
        valType: 'data_array',
        description: [
            'Sets the x coordinates.',
            'If absent, linear coordinate will be generated.'
        ].join(' ')
    },

    open: {
        valType: 'data_array',
        dflt: [],
        description: 'Sets the open values.'
    },

    high: {
        valType: 'data_array',
        dflt: [],
        description: 'Sets the high values.'
    },

    low: {
        valType: 'data_array',
        dflt: [],
        description: 'Sets the low values.'
    },

    close: {
        valType: 'data_array',
        dflt: [],
        description: 'Sets the close values.'
    },

    line: {
        width: Lib.extendFlat({}, lineAttrs.width, {
            description: [
                lineAttrs.width,
                'Note that this style setting can also be set per',
                'direction via `increasing.line.width` and',
                '`decreasing.line.width`.'
            ].join(' ')
        }),
        dash: Lib.extendFlat({}, lineAttrs.dash, {
            description: [
                lineAttrs.dash,
                'Note that this style setting can also be set per',
                'direction via `increasing.line.dash` and',
                '`decreasing.line.dash`.'
            ].join(' ')
        }),
    },

    increasing: Lib.extendDeep({}, directionAttrs, {
        line: { color: { dflt: INCREASING_COLOR } }
    }),

    decreasing: Lib.extendDeep({}, directionAttrs, {
        line: { color: { dflt: DECREASING_COLOR } }
    }),

    text: {
        valType: 'string',
        role: 'info',
        dflt: '',
        arrayOk: true,
        description: [
            'Sets hover text elements associated with each sample point.',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of string, the items are mapped in order to',
            'this trace\'s sample points.'
        ].join(' ')
    },

    tickwidth: {
        valType: 'number',
        min: 0,
        max: 0.5,
        dflt: 0.3,
        role: 'style',
        description: [
            'Sets the width of the open/close tick marks',
            'relative to the *x* minimal interval.'
        ].join(' ')
    }
};

},{"../../lib":610,"../scatter/attributes":834}],812:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var handleOHLC = require('./ohlc_defaults');
var handleDirectionDefaults = require('./direction_defaults');
var attributes = require('./attributes');
var helpers = require('./helpers');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    helpers.pushDummyTransformOpts(traceIn, traceOut);

    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleOHLC(traceIn, traceOut, coerce, layout);
    if(len === 0) {
        traceOut.visible = false;
        return;
    }

    coerce('line.width');
    coerce('line.dash');

    handleDirection(traceIn, traceOut, coerce, 'increasing');
    handleDirection(traceIn, traceOut, coerce, 'decreasing');

    coerce('text');
    coerce('tickwidth');
};

function handleDirection(traceIn, traceOut, coerce, direction) {
    handleDirectionDefaults(traceIn, traceOut, coerce, direction);

    coerce(direction + '.line.color');
    coerce(direction + '.line.width', traceOut.line.width);
    coerce(direction + '.line.dash', traceOut.line.dash);
}

},{"../../lib":610,"./attributes":811,"./direction_defaults":813,"./helpers":814,"./ohlc_defaults":816}],813:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = function handleDirectionDefaults(traceIn, traceOut, coerce, direction) {
    coerce(direction + '.showlegend');

    // trace-wide *showlegend* overrides direction *showlegend*
    if(traceIn.showlegend === false) {
        traceOut[direction].showlegend = false;
    }

    var nameDflt = traceOut.name + ' - ' + direction;

    coerce(direction + '.name', nameDflt);
};

},{}],814:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

// This routine gets called during the trace supply-defaults step.
//
// This is a hacky way to make 'ohlc' and 'candlestick' trace types
// go through the transform machinery.
//
// Note that, we must mutate user data (here traceIn) as opposed
// to full data (here traceOut) as - at the moment - transform
// defaults (which are called after trace defaults) start
// from a clear transforms container. The mutations inflicted are
// cleared in exports.clearEphemeralTransformOpts.
exports.pushDummyTransformOpts = function(traceIn, traceOut) {
    var transformOpts = {

        // give dummy transform the same type as trace
        type: traceOut.type,

        // track ephemeral transforms in user data
        _ephemeral: true
    };

    if(Array.isArray(traceIn.transforms)) {
        traceIn.transforms.push(transformOpts);
    }
    else {
        traceIn.transforms = [transformOpts];
    }
};

// This routine gets called during the transform supply-defaults step
// where it clears ephemeral transform opts in user data
// and effectively put back user date in its pre-supplyDefaults state.
exports.clearEphemeralTransformOpts = function(traceIn) {
    var transformsIn = traceIn.transforms;

    if(!Array.isArray(transformsIn)) return;

    for(var i = 0; i < transformsIn.length; i++) {
        if(transformsIn[i]._ephemeral) transformsIn.splice(i, 1);
    }

    if(transformsIn.length === 0) delete traceIn.transforms;
};

// This routine gets called during the transform supply-defaults step
// where it passes 'ohlc' and 'candlestick' attributes
// (found the transform container via exports.makeTransform)
// to the traceOut container such that they can
// be compatible with filter and groupby transforms.
//
// Note that this routine only has an effect during the
// second round of transform defaults done on generated traces
exports.copyOHLC = function(container, traceOut) {
    if(container.open) traceOut.open = container.open;
    if(container.high) traceOut.high = container.high;
    if(container.low) traceOut.low = container.low;
    if(container.close) traceOut.close = container.close;
};

// This routine gets called during the applyTransform step.
//
// We need to track trace attributes and which direction
// ('increasing' or 'decreasing')
// the generated correspond to for the calcTransform step.
//
// To make sure that the attributes reach the calcTransform,
// store it in the transform opts object.
exports.makeTransform = function(traceIn, state, direction) {
    var out = Lib.extendFlat([], traceIn.transforms);

    out[state.transformIndex] = {
        type: traceIn.type,
        direction: direction,

        // these are copied to traceOut during exports.copyOHLC
        open: traceIn.open,
        high: traceIn.high,
        low: traceIn.low,
        close: traceIn.close
    };

    return out;
};

exports.getFilterFn = function(direction) {
    switch(direction) {
        case 'increasing':
            return function(o, c) { return o <= c; };

        case 'decreasing':
            return function(o, c) { return o > c; };
    }
};

exports.addRangeSlider = function(layout) {
    if(!layout.xaxis) layout.xaxis = {};
    if(!layout.xaxis.rangeslider) layout.xaxis.rangeslider = {};
};

},{"../../lib":610}],815:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var register = require('../../plot_api/register');

module.exports = {
    moduleType: 'trace',
    name: 'ohlc',
    basePlotModule: require('../../plots/cartesian'),
    categories: ['cartesian', 'showLegend'],
    meta: {
        description: [
            'The ohlc (short for Open-High-Low-Close) is a style of financial chart describing',
            'open, high, low and close for a given `x` coordinate (most likely time).',

            'The tip of the lines represent the `low` and `high` values and',
            'the horizontal segments represent the `open` and `close` values.',

            'Sample points where the close value is higher (lower) then the open',
            'value are called increasing (decreasing).',

            'By default, increasing candles are drawn in green whereas',
            'decreasing are drawn in red.'
        ].join(' ')
    },

    attributes: require('./attributes'),
    supplyDefaults: require('./defaults'),
};

register(require('../scatter'));
register(require('./transform'));

},{"../../plot_api/register":632,"../../plots/cartesian":650,"../scatter":844,"./attributes":811,"./defaults":812,"./transform":817}],816:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');


module.exports = function handleOHLC(traceIn, traceOut, coerce, layout) {
    var len;

    var x = coerce('x'),
        open = coerce('open'),
        high = coerce('high'),
        low = coerce('low'),
        close = coerce('close');

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x'], layout);

    len = Math.min(open.length, high.length, low.length, close.length);

    if(x) {
        len = Math.min(len, x.length);
        if(len < x.length) traceOut.x = x.slice(0, len);
    }

    if(len < open.length) traceOut.open = open.slice(0, len);
    if(len < high.length) traceOut.high = high.slice(0, len);
    if(len < low.length) traceOut.low = low.slice(0, len);
    if(len < close.length) traceOut.close = close.slice(0, len);

    return len;
};

},{"../../registry":717}],817:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var helpers = require('./helpers');
var Axes = require('../../plots/cartesian/axes');
var axisIds = require('../../plots/cartesian/axis_ids');

exports.moduleType = 'transform';

exports.name = 'ohlc';

exports.attributes = {};

exports.supplyDefaults = function(transformIn, traceOut, layout, traceIn) {
    helpers.clearEphemeralTransformOpts(traceIn);
    helpers.copyOHLC(transformIn, traceOut);

    return transformIn;
};

exports.transform = function transform(dataIn, state) {
    var dataOut = [];

    for(var i = 0; i < dataIn.length; i++) {
        var traceIn = dataIn[i];

        if(traceIn.type !== 'ohlc') {
            dataOut.push(traceIn);
            continue;
        }

        dataOut.push(
            makeTrace(traceIn, state, 'increasing'),
            makeTrace(traceIn, state, 'decreasing')
        );
    }

    helpers.addRangeSlider(state.layout);

    return dataOut;
};

function makeTrace(traceIn, state, direction) {
    var traceOut = {
        type: 'scatter',
        mode: 'lines',
        connectgaps: false,

        visible: traceIn.visible,
        opacity: traceIn.opacity,
        xaxis: traceIn.xaxis,
        yaxis: traceIn.yaxis,

        hoverinfo: makeHoverInfo(traceIn),
        transforms: helpers.makeTransform(traceIn, state, direction)
    };

    // the rest of below may not have been coerced

    var directionOpts = traceIn[direction];

    if(directionOpts) {
        Lib.extendFlat(traceOut, {

            // to make autotype catch date axes soon!!
            x: traceIn.x || [0],
            xcalendar: traceIn.xcalendar,

            // concat low and high to get correct autorange
            y: [].concat(traceIn.low).concat(traceIn.high),

            text: traceIn.text,

            name: directionOpts.name,
            showlegend: directionOpts.showlegend,
            line: directionOpts.line
        });
    }

    return traceOut;
}

// Let scatter hoverPoint format 'x' coordinates, if desired.
//
// Note that, this solution isn't perfect: it shows open and close
// values at slightly different 'x' coordinates then the rest of the
// segments, but is for more robust than calling `Axes.tickText` during
// calcTransform.
//
// A future iteration should perhaps try to add a hook for transforms in
// the hoverPoints handlers.
function makeHoverInfo(traceIn) {
    var hoverinfo = traceIn.hoverinfo;

    if(hoverinfo === 'all') return 'x+text+name';

    var parts = hoverinfo.split('+'),
        indexOfY = parts.indexOf('y'),
        indexOfText = parts.indexOf('text');

    if(indexOfY !== -1) {
        parts.splice(indexOfY, 1);

        if(indexOfText === -1) parts.push('text');
    }

    return parts.join('+');
}

exports.calcTransform = function calcTransform(gd, trace, opts) {
    var direction = opts.direction,
        filterFn = helpers.getFilterFn(direction);

    var xa = axisIds.getFromTrace(gd, trace, 'x'),
        ya = axisIds.getFromTrace(gd, trace, 'y'),
        tickWidth = convertTickWidth(gd, xa, trace);

    var open = trace.open,
        high = trace.high,
        low = trace.low,
        close = trace.close,
        textIn = trace.text;

    var len = open.length,
        x = [],
        y = [],
        textOut = [];

    var appendX;
    if(trace._fullInput.x) {
        appendX = function(i) {
            var xi = trace.x[i],
                xcalendar = trace.xcalendar,
                xcalc = xa.d2c(xi, 0, xcalendar);

            x.push(
                xa.c2d(xcalc - tickWidth, 0, xcalendar),
                xi, xi, xi, xi,
                xa.c2d(xcalc + tickWidth, 0, xcalendar),
                null);
        };
    }
    else {
        appendX = function(i) {
            x.push(
                i - tickWidth,
                i, i, i, i,
                i + tickWidth,
                null);
        };
    }

    var appendY = function(o, h, l, c) {
        y.push(o, o, h, l, c, c, null);
    };

    var format = function(ax, val) {
        return Axes.tickText(ax, ax.c2l(val), 'hover').text;
    };

    var hoverinfo = trace._fullInput.hoverinfo,
        hoverParts = hoverinfo.split('+'),
        hasAll = hoverinfo === 'all',
        hasY = hasAll || hoverParts.indexOf('y') !== -1,
        hasText = hasAll || hoverParts.indexOf('text') !== -1;

    var getTextItem = Array.isArray(textIn) ?
        function(i) { return textIn[i] || ''; } :
        function() { return textIn; };

    var appendText = function(i, o, h, l, c) {
        var t = [];

        if(hasY) {
            t.push('Open: ' + format(ya, o));
            t.push('High: ' + format(ya, h));
            t.push('Low: ' + format(ya, l));
            t.push('Close: ' + format(ya, c));
        }

        if(hasText) t.push(getTextItem(i));

        var _t = t.join('<br>');

        textOut.push(_t, _t, _t, _t, _t, _t, null);
    };

    for(var i = 0; i < len; i++) {
        if(filterFn(open[i], close[i])) {
            appendX(i);
            appendY(open[i], high[i], low[i], close[i]);
            appendText(i, open[i], high[i], low[i], close[i]);
        }
    }

    trace.x = x;
    trace.y = y;
    trace.text = textOut;
};

function convertTickWidth(gd, xa, trace) {
    var fullInput = trace._fullInput,
        tickWidth = fullInput.tickwidth,
        minDiff = fullInput._minDiff;

    if(!minDiff) {
        var fullData = gd._fullData,
            ohlcTracesOnThisXaxis = [];

        minDiff = Infinity;

        // find min x-coordinates difference of all traces
        // attached to this x-axis and stash the result

        var i;

        for(i = 0; i < fullData.length; i++) {
            var _trace = fullData[i]._fullInput;

            if(_trace.type === 'ohlc' &&
                _trace.visible === true &&
                _trace.xaxis === xa._id
            ) {
                ohlcTracesOnThisXaxis.push(_trace);

                // - _trace.x may be undefined here,
                // it is filled later in calcTransform
                //
                // - handle trace of length 1 separately.

                if(_trace.x && _trace.x.length > 1) {
                    var xcalc = Lib.simpleMap(_trace.x, xa.d2c, 0, trace.xcalendar),
                        _minDiff = Lib.distinctVals(xcalc).minDiff;
                    minDiff = Math.min(minDiff, _minDiff);
                }
            }
        }

        // if minDiff is still Infinity here, set it to 1
        if(minDiff === Infinity) minDiff = 1;

        for(i = 0; i < ohlcTracesOnThisXaxis.length; i++) {
            ohlcTracesOnThisXaxis[i]._minDiff = minDiff;
        }
    }

    return minDiff * tickWidth;
}

},{"../../lib":610,"../../plots/cartesian/axes":642,"../../plots/cartesian/axis_ids":645,"./helpers":814}],818:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttrs = require('../../components/color/attributes');
var fontAttrs = require('../../plots/font_attributes');
var plotAttrs = require('../../plots/attributes');

var extendFlat = require('../../lib/extend').extendFlat;


module.exports = {
    labels: {
        valType: 'data_array',
        description: 'Sets the sector labels.'
    },
    // equivalent of x0 and dx, if label is missing
    label0: {
        valType: 'number',
        role: 'info',
        dflt: 0,
        description: [
            'Alternate to `labels`.',
            'Builds a numeric set of labels.',
            'Use with `dlabel`',
            'where `label0` is the starting label and `dlabel` the step.'
        ].join(' ')
    },
    dlabel: {
        valType: 'number',
        role: 'info',
        dflt: 1,
        description: 'Sets the label step. See `label0` for more info.'
    },

    values: {
        valType: 'data_array',
        description: 'Sets the values of the sectors of this pie chart.'
    },

    marker: {
        colors: {
            valType: 'data_array',  // TODO 'color_array' ?
            description: [
                'Sets the color of each sector of this pie chart.',
                'If not specified, the default trace color set is used',
                'to pick the sector colors.'
            ].join(' ')
        },

        line: {
            color: {
                valType: 'color',
                role: 'style',
                dflt: colorAttrs.defaultLine,
                arrayOk: true,
                description: [
                    'Sets the color of the line enclosing each sector.'
                ].join(' ')
            },
            width: {
                valType: 'number',
                role: 'style',
                min: 0,
                dflt: 0,
                arrayOk: true,
                description: [
                    'Sets the width (in px) of the line enclosing each sector.'
                ].join(' ')
            }
        }
    },

    text: {
        valType: 'data_array',
        description: 'Sets text elements associated with each sector.'
    },

// 'see eg:'
// 'https://www.e-education.psu.edu/natureofgeoinfo/sites/www.e-education.psu.edu.natureofgeoinfo/files/image/hisp_pies.gif',
// '(this example involves a map too - may someday be a whole trace type',
// 'of its own. but the point is the size of the whole pie is important.)'
    scalegroup: {
        valType: 'string',
        role: 'info',
        dflt: '',
        description: [
            'If there are multiple pies that should be sized according to',
            'their totals, link them by providing a non-empty group id here',
            'shared by every trace in the same group.'
        ].join(' ')
    },

    // labels (legend is handled by plots.attributes.showlegend and layout.hiddenlabels)
    textinfo: {
        valType: 'flaglist',
        role: 'info',
        flags: ['label', 'text', 'value', 'percent'],
        extras: ['none'],
        description: [
            'Determines which trace information appear on the graph.'
        ].join(' ')
    },
    hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {
        flags: ['label', 'text', 'value', 'percent', 'name']
    }),
    textposition: {
        valType: 'enumerated',
        role: 'info',
        values: ['inside', 'outside', 'auto', 'none'],
        dflt: 'auto',
        arrayOk: true,
        description: [
            'Specifies the location of the `textinfo`.'
        ].join(' ')
    },
    // TODO make those arrayOk?
    textfont: extendFlat({}, fontAttrs, {
        description: 'Sets the font used for `textinfo`.'
    }),
    insidetextfont: extendFlat({}, fontAttrs, {
        description: 'Sets the font used for `textinfo` lying inside the pie.'
    }),
    outsidetextfont: extendFlat({}, fontAttrs, {
        description: 'Sets the font used for `textinfo` lying outside the pie.'
    }),

    // position and shape
    domain: {
        x: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the horizontal domain of this pie trace',
                '(in plot fraction).'
            ].join(' ')
        },
        y: {
            valType: 'info_array',
            role: 'info',
            items: [
                {valType: 'number', min: 0, max: 1},
                {valType: 'number', min: 0, max: 1}
            ],
            dflt: [0, 1],
            description: [
                'Sets the vertical domain of this pie trace',
                '(in plot fraction).'
            ].join(' ')
        }
    },
    hole: {
        valType: 'number',
        role: 'style',
        min: 0,
        max: 1,
        dflt: 0,
        description: [
            'Sets the fraction of the radius to cut out of the pie.',
            'Use this to make a donut chart.'
        ].join(' ')
    },

    // ordering and direction
    sort: {
        valType: 'boolean',
        role: 'style',
        dflt: true,
        description: [
            'Determines whether or not the sectors of reordered',
            'from largest to smallest.'
        ].join(' ')
    },
    direction: {
        /**
         * there are two common conventions, both of which place the first
         * (largest, if sorted) slice with its left edge at 12 o'clock but
         * succeeding slices follow either cw or ccw from there.
         *
         * see http://visage.co/data-visualization-101-pie-charts/
         */
        valType: 'enumerated',
        values: ['clockwise', 'counterclockwise'],
        role: 'style',
        dflt: 'counterclockwise',
        description: [
            'Specifies the direction at which succeeding sectors follow',
            'one another.'
        ].join(' ')
    },
    rotation: {
        valType: 'number',
        role: 'style',
        min: -360,
        max: 360,
        dflt: 0,
        description: [
            'Instead of the first slice starting at 12 o\'clock,',
            'rotate to some other angle.'
        ].join(' ')
    },

    pull: {
        valType: 'number',
        role: 'style',
        min: 0,
        max: 1,
        dflt: 0,
        arrayOk: true,
        description: [
            'Sets the fraction of larger radius to pull the sectors',
            'out from the center. This can be a constant',
            'to pull all slices apart from each other equally',
            'or an array to highlight one or more slices.'
        ].join(' ')
    }
};

},{"../../components/color/attributes":509,"../../lib/extend":603,"../../plots/attributes":640,"../../plots/font_attributes":662}],819:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Registry = require('../../registry');


exports.name = 'pie';

exports.plot = function(gd) {
    var Pie = Registry.getModule('pie');
    var cdPie = getCdModule(gd.calcdata, Pie);

    if(cdPie.length) Pie.plot(gd, cdPie);
};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {
    var hadPie = (oldFullLayout._has && oldFullLayout._has('pie'));
    var hasPie = (newFullLayout._has && newFullLayout._has('pie'));

    if(hadPie && !hasPie) {
        oldFullLayout._pielayer.selectAll('g.trace').remove();
    }
};

function getCdModule(calcdata, _module) {
    var cdModule = [];

    for(var i = 0; i < calcdata.length; i++) {
        var cd = calcdata[i];
        var trace = cd[0].trace;

        if((trace._module === _module) && (trace.visible === true)) {
            cdModule.push(cd);
        }
    }

    return cdModule;
}

},{"../../registry":717}],820:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var isNumeric = require('fast-isnumeric');
var tinycolor = require('tinycolor2');

var Color = require('../../components/color');
var helpers = require('./helpers');

module.exports = function calc(gd, trace) {
    var vals = trace.values,
        labels = trace.labels,
        cd = [],
        fullLayout = gd._fullLayout,
        colorMap = fullLayout._piecolormap,
        allThisTraceLabels = {},
        needDefaults = false,
        vTotal = 0,
        hiddenLabels = fullLayout.hiddenlabels || [],
        i,
        v,
        label,
        color,
        hidden,
        pt;

    if(trace.dlabel) {
        labels = new Array(vals.length);
        for(i = 0; i < vals.length; i++) {
            labels[i] = String(trace.label0 + i * trace.dlabel);
        }
    }

    for(i = 0; i < vals.length; i++) {
        v = vals[i];
        if(!isNumeric(v)) continue;
        v = +v;
        if(v < 0) continue;

        label = labels[i];
        if(label === undefined || label === '') label = i;
        label = String(label);
        // only take the first occurrence of any given label.
        // TODO: perhaps (optionally?) sum values for a repeated label?
        if(allThisTraceLabels[label] === undefined) allThisTraceLabels[label] = true;
        else continue;

        color = tinycolor(trace.marker.colors[i]);
        if(color.isValid()) {
            color = Color.addOpacity(color, color.getAlpha());
            if(!colorMap[label]) {
                colorMap[label] = color;
            }
        }
        // have we seen this label and assigned a color to it in a previous trace?
        else if(colorMap[label]) color = colorMap[label];
        // color needs a default - mark it false, come back after sorting
        else {
            color = false;
            needDefaults = true;
        }

        hidden = hiddenLabels.indexOf(label) !== -1;

        if(!hidden) vTotal += v;

        cd.push({
            v: v,
            label: label,
            color: color,
            i: i,
            hidden: hidden
        });
    }

    if(trace.sort) cd.sort(function(a, b) { return b.v - a.v; });

    /**
     * now go back and fill in colors we're still missing
     * this is done after sorting, so we pick defaults
     * in the order slices will be displayed
     */

    if(needDefaults) {
        for(i = 0; i < cd.length; i++) {
            pt = cd[i];
            if(pt.color === false) {
                colorMap[pt.label] = pt.color = nextDefaultColor(fullLayout._piedefaultcolorcount);
                fullLayout._piedefaultcolorcount++;
            }
        }
    }

    // include the sum of all values in the first point
    if(cd[0]) cd[0].vTotal = vTotal;

    // now insert text
    if(trace.textinfo && trace.textinfo !== 'none') {
        var hasLabel = trace.textinfo.indexOf('label') !== -1,
            hasText = trace.textinfo.indexOf('text') !== -1,
            hasValue = trace.textinfo.indexOf('value') !== -1,
            hasPercent = trace.textinfo.indexOf('percent') !== -1,
            separators = fullLayout.separators,
            thisText;

        for(i = 0; i < cd.length; i++) {
            pt = cd[i];
            thisText = hasLabel ? [pt.label] : [];
            if(hasText && trace.text[pt.i]) thisText.push(trace.text[pt.i]);
            if(hasValue) thisText.push(helpers.formatPieValue(pt.v, separators));
            if(hasPercent) thisText.push(helpers.formatPiePercent(pt.v / vTotal, separators));
            pt.text = thisText.join('<br>');
        }
    }

    return cd;
};

/**
 * pick a default color from the main default set, augmented by
 * itself lighter then darker before repeating
 */
var pieDefaultColors;

function nextDefaultColor(index) {
    if(!pieDefaultColors) {
        // generate this default set on demand (but then it gets saved in the module)
        var mainDefaults = Color.defaults;
        pieDefaultColors = mainDefaults.slice();

        var i;

        for(i = 0; i < mainDefaults.length; i++) {
            pieDefaultColors.push(tinycolor(mainDefaults[i]).lighten(20).toHexString());
        }

        for(i = 0; i < Color.defaults.length; i++) {
            pieDefaultColors.push(tinycolor(mainDefaults[i]).darken(20).toHexString());
        }
    }

    return pieDefaultColors[index % pieDefaultColors.length];
}

},{"../../components/color":510,"./helpers":822,"fast-isnumeric":97,"tinycolor2":985}],821:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');
var attributes = require('./attributes');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var coerceFont = Lib.coerceFont;

    var vals = coerce('values');
    if(!Array.isArray(vals) || !vals.length) {
        traceOut.visible = false;
        return;
    }

    var labels = coerce('labels');
    if(!Array.isArray(labels)) {
        coerce('label0');
        coerce('dlabel');
    }

    var lineWidth = coerce('marker.line.width');
    if(lineWidth) coerce('marker.line.color');

    var colors = coerce('marker.colors');
    if(!Array.isArray(colors)) traceOut.marker.colors = []; // later this will get padded with default colors

    coerce('scalegroup');
    // TODO: tilt, depth, and hole all need to be coerced to the same values within a scaleegroup
    // (ideally actually, depth would get set the same *after* scaling, ie the same absolute depth)
    // and if colors aren't specified we should match these up - potentially even if separate pies
    // are NOT in the same sharegroup


    var textData = coerce('text');
    var textInfo = coerce('textinfo', Array.isArray(textData) ? 'text+percent' : 'percent');

    coerce('hoverinfo', (layout._dataLength === 1) ? 'label+text+value+percent' : undefined);

    if(textInfo && textInfo !== 'none') {
        var textPosition = coerce('textposition'),
            hasBoth = Array.isArray(textPosition) || textPosition === 'auto',
            hasInside = hasBoth || textPosition === 'inside',
            hasOutside = hasBoth || textPosition === 'outside';

        if(hasInside || hasOutside) {
            var dfltFont = coerceFont(coerce, 'textfont', layout.font);
            if(hasInside) coerceFont(coerce, 'insidetextfont', dfltFont);
            if(hasOutside) coerceFont(coerce, 'outsidetextfont', dfltFont);
        }
    }

    coerce('domain.x');
    coerce('domain.y');

    // 3D attributes commented out until I finish them in a later PR
    // var tilt = coerce('tilt');
    // if(tilt) {
    //     coerce('tiltaxis');
    //     coerce('depth');
    //     coerce('shading');
    // }

    coerce('hole');

    coerce('sort');
    coerce('direction');
    coerce('rotation');

    coerce('pull');
};

},{"../../lib":610,"./attributes":818}],822:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');

exports.formatPiePercent = function formatPiePercent(v, separators) {
    var vRounded = (v * 100).toPrecision(3);
    if(vRounded.lastIndexOf('.') !== -1) {
        vRounded = vRounded.replace(/[.]?0+$/, '');
    }
    return Lib.numSeparate(vRounded, separators) + '%';
};

exports.formatPieValue = function formatPieValue(v, separators) {
    var vRounded = v.toPrecision(10);
    if(vRounded.lastIndexOf('.') !== -1) {
        vRounded = vRounded.replace(/[.]?0+$/, '');
    }
    return Lib.numSeparate(vRounded, separators);
};

},{"../../lib":610}],823:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Pie = {};

Pie.attributes = require('./attributes');
Pie.supplyDefaults = require('./defaults');
Pie.supplyLayoutDefaults = require('./layout_defaults');
Pie.layoutAttributes = require('./layout_attributes');
Pie.calc = require('./calc');
Pie.plot = require('./plot');
Pie.style = require('./style');
Pie.styleOne = require('./style_one');

Pie.moduleType = 'trace';
Pie.name = 'pie';
Pie.basePlotModule = require('./base_plot');
Pie.categories = ['pie', 'showLegend'];
Pie.meta = {
    description: [
        'A data visualized by the sectors of the pie is set in `values`.',
        'The sector labels are set in `labels`.',
        'The sector colors are set in `marker.colors`'
    ].join(' ')
};

module.exports = Pie;

},{"./attributes":818,"./base_plot":819,"./calc":820,"./defaults":821,"./layout_attributes":824,"./layout_defaults":825,"./plot":826,"./style":827,"./style_one":828}],824:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = {
    /**
     * hiddenlabels is the pie chart analog of visible:'legendonly'
     * but it can contain many labels, and can hide slices
     * from several pies simultaneously
     */
    hiddenlabels: {valType: 'data_array'}
};

},{}],825:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../../lib');

var layoutAttributes = require('./layout_attributes');

module.exports = function supplyLayoutDefaults(layoutIn, layoutOut) {
    function coerce(attr, dflt) {
        return Lib.coerce(layoutIn, layoutOut, layoutAttributes, attr, dflt);
    }
    coerce('hiddenlabels');
};

},{"../../lib":610,"./layout_attributes":824}],826:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var Fx = require('../../plots/cartesian/graph_interact');
var Color = require('../../components/color');
var Drawing = require('../../components/drawing');
var svgTextUtils = require('../../lib/svg_text_utils');

var helpers = require('./helpers');

module.exports = function plot(gd, cdpie) {
    var fullLayout = gd._fullLayout;

    scalePies(cdpie, fullLayout._size);

    var pieGroups = fullLayout._pielayer.selectAll('g.trace').data(cdpie);

    pieGroups.enter().append('g')
        .attr({
            'stroke-linejoin': 'round', // TODO: miter might look better but can sometimes cause problems
                                        // maybe miter with a small-ish stroke-miterlimit?
            'class': 'trace'
        });
    pieGroups.exit().remove();
    pieGroups.order();

    pieGroups.each(function(cd) {
        var pieGroup = d3.select(this),
            cd0 = cd[0],
            trace = cd0.trace,
            tiltRads = 0, // trace.tilt * Math.PI / 180,
            depthLength = (trace.depth||0) * cd0.r * Math.sin(tiltRads) / 2,
            tiltAxis = trace.tiltaxis || 0,
            tiltAxisRads = tiltAxis * Math.PI / 180,
            depthVector = [
                depthLength * Math.sin(tiltAxisRads),
                depthLength * Math.cos(tiltAxisRads)
            ],
            rSmall = cd0.r * Math.cos(tiltRads);

        var pieParts = pieGroup.selectAll('g.part')
            .data(trace.tilt ? ['top', 'sides'] : ['top']);

        pieParts.enter().append('g').attr('class', function(d) {
            return d + ' part';
        });
        pieParts.exit().remove();
        pieParts.order();

        setCoords(cd);

        pieGroup.selectAll('.top').each(function() {
            var slices = d3.select(this).selectAll('g.slice').data(cd);

            slices.enter().append('g')
                .classed('slice', true);
            slices.exit().remove();

            var quadrants = [
                    [[], []], // y<0: x<0, x>=0
                    [[], []] // y>=0: x<0, x>=0
                ],
                hasOutsideText = false;

            slices.each(function(pt) {
                if(pt.hidden) {
                    d3.select(this).selectAll('path,g').remove();
                    return;
                }

                quadrants[pt.pxmid[1] < 0 ? 0 : 1][pt.pxmid[0] < 0 ? 0 : 1].push(pt);

                var cx = cd0.cx + depthVector[0],
                    cy = cd0.cy + depthVector[1],
                    sliceTop = d3.select(this),
                    slicePath = sliceTop.selectAll('path.surface').data([pt]),
                    hasHoverData = false;

                function handleMouseOver(evt) {
                    // in case fullLayout or fullData has changed without a replot
                    var fullLayout2 = gd._fullLayout,
                        trace2 = gd._fullData[trace.index],
                        hoverinfo = trace2.hoverinfo;

                    if(hoverinfo === 'all') hoverinfo = 'label+text+value+percent+name';

                    // in case we dragged over the pie from another subplot,
                    // or if hover is turned off
                    if(gd._dragging || fullLayout2.hovermode === false ||
                            hoverinfo === 'none' || hoverinfo === 'skip' || !hoverinfo) {
                        return;
                    }

                    var rInscribed = getInscribedRadiusFraction(pt, cd0),
                        hoverCenterX = cx + pt.pxmid[0] * (1 - rInscribed),
                        hoverCenterY = cy + pt.pxmid[1] * (1 - rInscribed),
                        separators = fullLayout.separators,
                        thisText = [];

                    if(hoverinfo.indexOf('label') !== -1) thisText.push(pt.label);
                    if(trace2.text && trace2.text[pt.i] && hoverinfo.indexOf('text') !== -1) {
                        thisText.push(trace2.text[pt.i]);
                    }
                    if(hoverinfo.indexOf('value') !== -1) thisText.push(helpers.formatPieValue(pt.v, separators));
                    if(hoverinfo.indexOf('percent') !== -1) thisText.push(helpers.formatPiePercent(pt.v / cd0.vTotal, separators));

                    Fx.loneHover({
                        x0: hoverCenterX - rInscribed * cd0.r,
                        x1: hoverCenterX + rInscribed * cd0.r,
                        y: hoverCenterY,
                        text: thisText.join('<br>'),
                        name: hoverinfo.indexOf('name') !== -1 ? trace2.name : undefined,
                        color: pt.color,
                        idealAlign: pt.pxmid[0] < 0 ? 'left' : 'right'
                    }, {
                        container: fullLayout2._hoverlayer.node(),
                        outerContainer: fullLayout2._paper.node()
                    });

                    Fx.hover(gd, evt, 'pie');

                    hasHoverData = true;
                }

                function handleMouseOut(evt) {
                    gd.emit('plotly_unhover', {
                        points: [evt]
                    });

                    if(hasHoverData) {
                        Fx.loneUnhover(fullLayout._hoverlayer.node());
                        hasHoverData = false;
                    }
                }

                function handleClick() {
                    gd._hoverdata = [pt];
                    gd._hoverdata.trace = cd.trace;
                    Fx.click(gd, { target: true });
                }

                slicePath.enter().append('path')
                    .classed('surface', true)
                    .style({'pointer-events': 'all'});

                sliceTop.select('path.textline').remove();

                sliceTop
                    .on('mouseover', handleMouseOver)
                    .on('mouseout', handleMouseOut)
                    .on('click', handleClick);

                if(trace.pull) {
                    var pull = +(Array.isArray(trace.pull) ? trace.pull[pt.i] : trace.pull) || 0;
                    if(pull > 0) {
                        cx += pull * pt.pxmid[0];
                        cy += pull * pt.pxmid[1];
                    }
                }

                pt.cxFinal = cx;
                pt.cyFinal = cy;

                function arc(start, finish, cw, scale) {
                    return 'a' + (scale * cd0.r) + ',' + (scale * rSmall) + ' ' + tiltAxis + ' ' +
                        pt.largeArc + (cw ? ' 1 ' : ' 0 ') +
                        (scale * (finish[0] - start[0])) + ',' + (scale * (finish[1] - start[1]));
                }

                var hole = trace.hole;
                if(pt.v === cd0.vTotal) { // 100% fails bcs arc start and end are identical
                    var outerCircle = 'M' + (cx + pt.px0[0]) + ',' + (cy + pt.px0[1]) +
                        arc(pt.px0, pt.pxmid, true, 1) +
                        arc(pt.pxmid, pt.px0, true, 1) + 'Z';
                    if(hole) {
                        slicePath.attr('d',
                            'M' + (cx + hole * pt.px0[0]) + ',' + (cy + hole * pt.px0[1]) +
                            arc(pt.px0, pt.pxmid, false, hole) +
                            arc(pt.pxmid, pt.px0, false, hole) +
                            'Z' + outerCircle);
                    }
                    else slicePath.attr('d', outerCircle);
                } else {

                    var outerArc = arc(pt.px0, pt.px1, true, 1);

                    if(hole) {
                        var rim = 1 - hole;
                        slicePath.attr('d',
                            'M' + (cx + hole * pt.px1[0]) + ',' + (cy + hole * pt.px1[1]) +
                            arc(pt.px1, pt.px0, false, hole) +
                            'l' + (rim * pt.px0[0]) + ',' + (rim * pt.px0[1]) +
                            outerArc +
                            'Z');
                    } else {
                        slicePath.attr('d',
                            'M' + cx + ',' + cy +
                            'l' + pt.px0[0] + ',' + pt.px0[1] +
                            outerArc +
                            'Z');
                    }
                }

                // add text
                var textPosition = Array.isArray(trace.textposition) ?
                        trace.textposition[pt.i] : trace.textposition,
                    sliceTextGroup = sliceTop.selectAll('g.slicetext')
                    .data(pt.text && (textPosition !== 'none') ? [0] : []);

                sliceTextGroup.enter().append('g')
                    .classed('slicetext', true);
                sliceTextGroup.exit().remove();

                sliceTextGroup.each(function() {
                    var sliceText = d3.select(this).selectAll('text').data([0]);

                    sliceText.enter().append('text')
                        // prohibit tex interpretation until we can handle
                        // tex and regular text together
                        .attr('data-notex', 1);
                    sliceText.exit().remove();

                    sliceText.text(pt.text)
                        .attr({
                            'class': 'slicetext',
                            transform: '',
                            'data-bb': '',
                            'text-anchor': 'middle',
                            x: 0,
                            y: 0
                        })
                        .call(Drawing.font, textPosition === 'outside' ?
                            trace.outsidetextfont : trace.insidetextfont)
                        .call(svgTextUtils.convertToTspans);
                    sliceText.selectAll('tspan.line').attr({x: 0, y: 0});

                    // position the text relative to the slice
                    // TODO: so far this only accounts for flat
                    var textBB = Drawing.bBox(sliceText.node()),
                        transform;

                    if(textPosition === 'outside') {
                        transform = transformOutsideText(textBB, pt);
                    } else {
                        transform = transformInsideText(textBB, pt, cd0);
                        if(textPosition === 'auto' && transform.scale < 1) {
                            sliceText.call(Drawing.font, trace.outsidetextfont);
                            if(trace.outsidetextfont.family !== trace.insidetextfont.family ||
                                    trace.outsidetextfont.size !== trace.insidetextfont.size) {
                                sliceText.attr({'data-bb': ''});
                                textBB = Drawing.bBox(sliceText.node());
                            }
                            transform = transformOutsideText(textBB, pt);
                        }
                    }

                    var translateX = cx + pt.pxmid[0] * transform.rCenter + (transform.x || 0),
                        translateY = cy + pt.pxmid[1] * transform.rCenter + (transform.y || 0);

                    // save some stuff to use later ensure no labels overlap
                    if(transform.outside) {
                        pt.yLabelMin = translateY - textBB.height / 2;
                        pt.yLabelMid = translateY;
                        pt.yLabelMax = translateY + textBB.height / 2;
                        pt.labelExtraX = 0;
                        pt.labelExtraY = 0;
                        hasOutsideText = true;
                    }

                    sliceText.attr('transform',
                        'translate(' + translateX + ',' + translateY + ')' +
                        (transform.scale < 1 ? ('scale(' + transform.scale + ')') : '') +
                        (transform.rotate ? ('rotate(' + transform.rotate + ')') : '') +
                        'translate(' +
                            (-(textBB.left + textBB.right) / 2) + ',' +
                            (-(textBB.top + textBB.bottom) / 2) +
                        ')');
                });
            });

            // now make sure no labels overlap (at least within one pie)
            if(hasOutsideText) scootLabels(quadrants, trace);
            slices.each(function(pt) {
                if(pt.labelExtraX || pt.labelExtraY) {
                    // first move the text to its new location
                    var sliceTop = d3.select(this),
                        sliceText = sliceTop.select('g.slicetext text');

                    sliceText.attr('transform', 'translate(' + pt.labelExtraX + ',' + pt.labelExtraY + ')' +
                        sliceText.attr('transform'));

                    // then add a line to the new location
                    var lineStartX = pt.cxFinal + pt.pxmid[0],
                        lineStartY = pt.cyFinal + pt.pxmid[1],
                        textLinePath = 'M' + lineStartX + ',' + lineStartY,
                        finalX = (pt.yLabelMax - pt.yLabelMin) * (pt.pxmid[0] < 0 ? -1 : 1) / 4;
                    if(pt.labelExtraX) {
                        var yFromX = pt.labelExtraX * pt.pxmid[1] / pt.pxmid[0],
                            yNet = pt.yLabelMid + pt.labelExtraY - (pt.cyFinal + pt.pxmid[1]);

                        if(Math.abs(yFromX) > Math.abs(yNet)) {
                            textLinePath +=
                                'l' + (yNet * pt.pxmid[0] / pt.pxmid[1]) + ',' + yNet +
                                'H' + (lineStartX + pt.labelExtraX + finalX);
                        } else {
                            textLinePath += 'l' + pt.labelExtraX + ',' + yFromX +
                                'v' + (yNet - yFromX) +
                                'h' + finalX;
                        }
                    } else {
                        textLinePath +=
                            'V' + (pt.yLabelMid + pt.labelExtraY) +
                            'h' + finalX;
                    }

                    sliceTop.append('path')
                        .classed('textline', true)
                        .call(Color.stroke, trace.outsidetextfont.color)
                        .attr({
                            'stroke-width': Math.min(2, trace.outsidetextfont.size / 8),
                            d: textLinePath,
                            fill: 'none'
                        });
                }
            });
        });
    });

    // This is for a bug in Chrome (as of 2015-07-22, and does not affect FF)
    // if insidetextfont and outsidetextfont are different sizes, sometimes the size
    // of an "em" gets taken from the wrong element at first so lines are
    // spaced wrong. You just have to tell it to try again later and it gets fixed.
    // I have no idea why we haven't seen this in other contexts. Also, sometimes
    // it gets the initial draw correct but on redraw it gets confused.
    setTimeout(function() {
        pieGroups.selectAll('tspan').each(function() {
            var s = d3.select(this);
            if(s.attr('dy')) s.attr('dy', s.attr('dy'));
        });
    }, 0);
};


function transformInsideText(textBB, pt, cd0) {
    var textDiameter = Math.sqrt(textBB.width * textBB.width + textBB.height * textBB.height),
        textAspect = textBB.width / textBB.height,
        halfAngle = Math.PI * Math.min(pt.v / cd0.vTotal, 0.5),
        ring = 1 - cd0.trace.hole,
        rInscribed = getInscribedRadiusFraction(pt, cd0),

        // max size text can be inserted inside without rotating it
        // this inscribes the text rectangle in a circle, which is then inscribed
        // in the slice, so it will be an underestimate, which some day we may want
        // to improve so this case can get more use
        transform = {
            scale: rInscribed * cd0.r * 2 / textDiameter,

            // and the center position and rotation in this case
            rCenter: 1 - rInscribed,
            rotate: 0
        };

    if(transform.scale >= 1) return transform;

        // max size if text is rotated radially
    var Qr = textAspect + 1 / (2 * Math.tan(halfAngle)),
        maxHalfHeightRotRadial = cd0.r * Math.min(
            1 / (Math.sqrt(Qr * Qr + 0.5) + Qr),
            ring / (Math.sqrt(textAspect * textAspect + ring / 2) + textAspect)
        ),
        radialTransform = {
            scale: maxHalfHeightRotRadial * 2 / textBB.height,
            rCenter: Math.cos(maxHalfHeightRotRadial / cd0.r) -
                maxHalfHeightRotRadial * textAspect / cd0.r,
            rotate: (180 / Math.PI * pt.midangle + 720) % 180 - 90
        },

        // max size if text is rotated tangentially
        aspectInv = 1 / textAspect,
        Qt = aspectInv + 1 / (2 * Math.tan(halfAngle)),
        maxHalfWidthTangential = cd0.r * Math.min(
            1 / (Math.sqrt(Qt * Qt + 0.5) + Qt),
            ring / (Math.sqrt(aspectInv * aspectInv + ring / 2) + aspectInv)
        ),
        tangentialTransform = {
            scale: maxHalfWidthTangential * 2 / textBB.width,
            rCenter: Math.cos(maxHalfWidthTangential / cd0.r) -
                maxHalfWidthTangential / textAspect / cd0.r,
            rotate: (180 / Math.PI * pt.midangle + 810) % 180 - 90
        },
        // if we need a rotated transform, pick the biggest one
        // even if both are bigger than 1
        rotatedTransform = tangentialTransform.scale > radialTransform.scale ?
            tangentialTransform : radialTransform;

    if(transform.scale < 1 && rotatedTransform.scale > transform.scale) return rotatedTransform;
    return transform;
}

function getInscribedRadiusFraction(pt, cd0) {
    if(pt.v === cd0.vTotal && !cd0.trace.hole) return 1;// special case of 100% with no hole

    var halfAngle = Math.PI * Math.min(pt.v / cd0.vTotal, 0.5);
    return Math.min(1 / (1 + 1 / Math.sin(halfAngle)), (1 - cd0.trace.hole) / 2);
}

function transformOutsideText(textBB, pt) {
    var x = pt.pxmid[0],
        y = pt.pxmid[1],
        dx = textBB.width / 2,
        dy = textBB.height / 2;

    if(x < 0) dx *= -1;
    if(y < 0) dy *= -1;

    return {
        scale: 1,
        rCenter: 1,
        rotate: 0,
        x: dx + Math.abs(dy) * (dx > 0 ? 1 : -1) / 2,
        y: dy / (1 + x * x / (y * y)),
        outside: true
    };
}

function scootLabels(quadrants, trace) {
    var xHalf,
        yHalf,
        equatorFirst,
        farthestX,
        farthestY,
        xDiffSign,
        yDiffSign,
        thisQuad,
        oppositeQuad,
        wholeSide,
        i,
        thisQuadOutside,
        firstOppositeOutsidePt;

    function topFirst(a, b) { return a.pxmid[1] - b.pxmid[1]; }
    function bottomFirst(a, b) { return b.pxmid[1] - a.pxmid[1]; }

    function scootOneLabel(thisPt, prevPt) {
        if(!prevPt) prevPt = {};

        var prevOuterY = prevPt.labelExtraY + (yHalf ? prevPt.yLabelMax : prevPt.yLabelMin),
            thisInnerY = yHalf ? thisPt.yLabelMin : thisPt.yLabelMax,
            thisOuterY = yHalf ? thisPt.yLabelMax : thisPt.yLabelMin,
            thisSliceOuterY = thisPt.cyFinal + farthestY(thisPt.px0[1], thisPt.px1[1]),
            newExtraY = prevOuterY - thisInnerY,
            xBuffer,
            i,
            otherPt,
            otherOuterY,
            otherOuterX,
            newExtraX;
        // make sure this label doesn't overlap other labels
        // this *only* has us move these labels vertically
        if(newExtraY * yDiffSign > 0) thisPt.labelExtraY = newExtraY;

        // make sure this label doesn't overlap any slices
        if(!Array.isArray(trace.pull)) return; // this can only happen with array pulls

        for(i = 0; i < wholeSide.length; i++) {
            otherPt = wholeSide[i];

            // overlap can only happen if the other point is pulled more than this one
            if(otherPt === thisPt || ((trace.pull[thisPt.i] || 0) >= trace.pull[otherPt.i] || 0)) continue;

            if((thisPt.pxmid[1] - otherPt.pxmid[1]) * yDiffSign > 0) {
                // closer to the equator - by construction all of these happen first
                // move the text vertically to get away from these slices
                otherOuterY = otherPt.cyFinal + farthestY(otherPt.px0[1], otherPt.px1[1]);
                newExtraY = otherOuterY - thisInnerY - thisPt.labelExtraY;

                if(newExtraY * yDiffSign > 0) thisPt.labelExtraY += newExtraY;

            } else if((thisOuterY + thisPt.labelExtraY - thisSliceOuterY) * yDiffSign > 0) {
                // farther from the equator - happens after we've done all the
                // vertical moving we're going to do
                // move horizontally to get away from these more polar slices

                // if we're moving horz. based on a slice that's several slices away from this one
                // then we need some extra space for the lines to labels between them
                xBuffer = 3 * xDiffSign * Math.abs(i - wholeSide.indexOf(thisPt));

                otherOuterX = otherPt.cxFinal + farthestX(otherPt.px0[0], otherPt.px1[0]);
                newExtraX = otherOuterX + xBuffer - (thisPt.cxFinal + thisPt.pxmid[0]) - thisPt.labelExtraX;

                if(newExtraX * xDiffSign > 0) thisPt.labelExtraX += newExtraX;
            }
        }
    }

    for(yHalf = 0; yHalf < 2; yHalf++) {
        equatorFirst = yHalf ? topFirst : bottomFirst;
        farthestY = yHalf ? Math.max : Math.min;
        yDiffSign = yHalf ? 1 : -1;

        for(xHalf = 0; xHalf < 2; xHalf++) {
            farthestX = xHalf ? Math.max : Math.min;
            xDiffSign = xHalf ? 1 : -1;

            // first sort the array
            // note this is a copy of cd, so cd itself doesn't get sorted
            // but we can still modify points in place.
            thisQuad = quadrants[yHalf][xHalf];
            thisQuad.sort(equatorFirst);

            oppositeQuad = quadrants[1 - yHalf][xHalf];
            wholeSide = oppositeQuad.concat(thisQuad);

            thisQuadOutside = [];
            for(i = 0; i < thisQuad.length; i++) {
                if(thisQuad[i].yLabelMid !== undefined) thisQuadOutside.push(thisQuad[i]);
            }

            firstOppositeOutsidePt = false;
            for(i = 0; yHalf && i < oppositeQuad.length; i++) {
                if(oppositeQuad[i].yLabelMid !== undefined) {
                    firstOppositeOutsidePt = oppositeQuad[i];
                    break;
                }
            }

            // each needs to avoid the previous
            for(i = 0; i < thisQuadOutside.length; i++) {
                var prevPt = i && thisQuadOutside[i - 1];
                // bottom half needs to avoid the first label of the top half
                // top half we still need to call scootOneLabel on the first slice
                // so we can avoid other slices, but we don't pass a prevPt
                if(firstOppositeOutsidePt && !i) prevPt = firstOppositeOutsidePt;
                scootOneLabel(thisQuadOutside[i], prevPt);
            }
        }
    }
}

function scalePies(cdpie, plotSize) {
    var pieBoxWidth,
        pieBoxHeight,
        i,
        j,
        cd0,
        trace,
        tiltAxisRads,
        maxPull,
        scaleGroups = [],
        scaleGroup,
        minPxPerValUnit;

    // first figure out the center and maximum radius for each pie
    for(i = 0; i < cdpie.length; i++) {
        cd0 = cdpie[i][0];
        trace = cd0.trace;
        pieBoxWidth = plotSize.w * (trace.domain.x[1] - trace.domain.x[0]);
        pieBoxHeight = plotSize.h * (trace.domain.y[1] - trace.domain.y[0]);
        tiltAxisRads = trace.tiltaxis * Math.PI / 180;

        maxPull = trace.pull;
        if(Array.isArray(maxPull)) {
            maxPull = 0;
            for(j = 0; j < trace.pull.length; j++) {
                if(trace.pull[j] > maxPull) maxPull = trace.pull[j];
            }
        }

        cd0.r = Math.min(
                pieBoxWidth / maxExtent(trace.tilt, Math.sin(tiltAxisRads), trace.depth),
                pieBoxHeight / maxExtent(trace.tilt, Math.cos(tiltAxisRads), trace.depth)
            ) / (2 + 2 * maxPull);

        cd0.cx = plotSize.l + plotSize.w * (trace.domain.x[1] + trace.domain.x[0]) / 2;
        cd0.cy = plotSize.t + plotSize.h * (2 - trace.domain.y[1] - trace.domain.y[0]) / 2;

        if(trace.scalegroup && scaleGroups.indexOf(trace.scalegroup) === -1) {
            scaleGroups.push(trace.scalegroup);
        }
    }

    // Then scale any pies that are grouped
    for(j = 0; j < scaleGroups.length; j++) {
        minPxPerValUnit = Infinity;
        scaleGroup = scaleGroups[j];

        for(i = 0; i < cdpie.length; i++) {
            cd0 = cdpie[i][0];
            if(cd0.trace.scalegroup === scaleGroup) {
                minPxPerValUnit = Math.min(minPxPerValUnit,
                    cd0.r * cd0.r / cd0.vTotal);
            }
        }

        for(i = 0; i < cdpie.length; i++) {
            cd0 = cdpie[i][0];
            if(cd0.trace.scalegroup === scaleGroup) {
                cd0.r = Math.sqrt(minPxPerValUnit * cd0.vTotal);
            }
        }
    }

}

function setCoords(cd) {
    var cd0 = cd[0],
        trace = cd0.trace,
        tilt = trace.tilt,
        tiltAxisRads,
        tiltAxisSin,
        tiltAxisCos,
        tiltRads,
        crossTilt,
        inPlane,
        currentAngle = trace.rotation * Math.PI / 180,
        angleFactor = 2 * Math.PI / cd0.vTotal,
        firstPt = 'px0',
        lastPt = 'px1',
        i,
        cdi,
        currentCoords;

    if(trace.direction === 'counterclockwise') {
        for(i = 0; i < cd.length; i++) {
            if(!cd[i].hidden) break; // find the first non-hidden slice
        }
        if(i === cd.length) return; // all slices hidden

        currentAngle += angleFactor * cd[i].v;
        angleFactor *= -1;
        firstPt = 'px1';
        lastPt = 'px0';
    }

    if(tilt) {
        tiltRads = tilt * Math.PI / 180;
        tiltAxisRads = trace.tiltaxis * Math.PI / 180;
        crossTilt = Math.sin(tiltAxisRads) * Math.cos(tiltAxisRads);
        inPlane = 1 - Math.cos(tiltRads);
        tiltAxisSin = Math.sin(tiltAxisRads);
        tiltAxisCos = Math.cos(tiltAxisRads);
    }

    function getCoords(angle) {
        var xFlat = cd0.r * Math.sin(angle),
            yFlat = -cd0.r * Math.cos(angle);

        if(!tilt) return [xFlat, yFlat];

        return [
            xFlat * (1 - inPlane * tiltAxisSin * tiltAxisSin) + yFlat * crossTilt * inPlane,
            xFlat * crossTilt * inPlane + yFlat * (1 - inPlane * tiltAxisCos * tiltAxisCos),
            Math.sin(tiltRads) * (yFlat * tiltAxisCos - xFlat * tiltAxisSin)
        ];
    }

    currentCoords = getCoords(currentAngle);

    for(i = 0; i < cd.length; i++) {
        cdi = cd[i];
        if(cdi.hidden) continue;

        cdi[firstPt] = currentCoords;

        currentAngle += angleFactor * cdi.v / 2;
        cdi.pxmid = getCoords(currentAngle);
        cdi.midangle = currentAngle;

        currentAngle += angleFactor * cdi.v / 2;
        currentCoords = getCoords(currentAngle);

        cdi[lastPt] = currentCoords;

        cdi.largeArc = (cdi.v > cd0.vTotal / 2) ? 1 : 0;
    }
}

function maxExtent(tilt, tiltAxisFraction, depth) {
    if(!tilt) return 1;
    var sinTilt = Math.sin(tilt * Math.PI / 180);
    return Math.max(0.01, // don't let it go crazy if you tilt the pie totally on its side
        depth * sinTilt * Math.abs(tiltAxisFraction) +
        2 * Math.sqrt(1 - sinTilt * sinTilt * tiltAxisFraction * tiltAxisFraction));
}

},{"../../components/color":510,"../../components/drawing":533,"../../lib/svg_text_utils":625,"../../plots/cartesian/graph_interact":649,"./helpers":822,"d3":86}],827:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var d3 = require('d3');

var styleOne = require('./style_one');

module.exports = function style(gd) {
    gd._fullLayout._pielayer.selectAll('.trace').each(function(cd) {
        var cd0 = cd[0],
            trace = cd0.trace,
            traceSelection = d3.select(this);

        traceSelection.style({opacity: trace.opacity});

        traceSelection.selectAll('.top path.surface').each(function(pt) {
            d3.select(this).call(styleOne, pt, trace);
        });
    });
};

},{"./style_one":828,"d3":86}],828:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Color = require('../../components/color');

module.exports = function styleOne(s, pt, trace) {
    var lineColor = trace.marker.line.color;
    if(Array.isArray(lineColor)) lineColor = lineColor[pt.i] || Color.defaultLine;

    var lineWidth = trace.marker.line.width || 0;
    if(Array.isArray(lineWidth)) lineWidth = lineWidth[pt.i] || 0;

    s.style({
        'stroke-width': lineWidth,
        fill: pt.color
    })
    .call(Color.stroke, lineColor);
};

},{"../../components/color":510}],829:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterglAttrs = require('../scattergl/attributes');

module.exports = {
    x: scatterglAttrs.x,
    y: scatterglAttrs.y,
    xy: {
        valType: 'data_array',
        description: [
            'Faster alternative to specifying `x` and `y` separately.',
            'If supplied, it must be a typed `Float32Array` array that',
            'represents points such that `xy[i * 2] = x[i]` and `xy[i * 2 + 1] = y[i]`'
        ].join(' ')
    },
    indices: {
        valType: 'data_array',
        description: [
            'A sequential value, 0..n, supply it to avoid creating this array inside plotting.',
            'If specified, it must be a typed `Int32Array` array.',
            'Its length must be equal to or greater than the number of points.',
            'For the best performance and memory use, create one large `indices` typed array',
            'that is guaranteed to be at least as long as the largest number of points during',
            'use, and reuse it on each `Plotly.restyle()` call.'
        ].join(' ')
    },
    xbounds: {
        valType: 'data_array',
        description: [
            'Specify `xbounds` in the shape of `[xMin, xMax] to avoid looping through',
            'the `xy` typed array. Use it in conjunction with `xy` and `ybounds` for the performance benefits.'
        ].join(' ')
    },
    ybounds: {
        valType: 'data_array',
        description: [
            'Specify `ybounds` in the shape of `[yMin, yMax] to avoid looping through',
            'the `xy` typed array. Use it in conjunction with `xy` and `xbounds` for the performance benefits.'
        ].join(' ')
    },
    text: scatterglAttrs.text,
    marker: {
        color: {
            valType: 'color',
            arrayOk: false,
            role: 'style',
            description: [
                'Sets the marker fill color. It accepts a specific color.',
                'If the color is not fully opaque and there are hundreds of thousands',
                'of points, it may cause slower zooming and panning.'
            ].join('')
        },
        opacity: {
            valType: 'number',
            min: 0,
            max: 1,
            dflt: 1,
            arrayOk: false,
            role: 'style',
            description: [
                'Sets the marker opacity. The default value is `1` (fully opaque).',
                'If the markers are not fully opaque and there are hundreds of thousands',
                'of points, it may cause slower zooming and panning.',
                'Opacity fades the color even if `blend` is left on `false` even if there',
                'is no translucency effect in that case.'
            ].join(' ')
        },
        blend: {
            valType: 'boolean',
            dflt: null,
            role: 'style',
            description: [
                'Determines if colors are blended together for a translucency effect',
                'in case `opacity` is specified as a value less then `1`.',
                'Setting `blend` to `true` reduces zoom/pan',
                'speed if used with large numbers of points.'
            ].join(' ')
        },
        sizemin: {
            valType: 'number',
            min: 0.1,
            max: 2,
            dflt: 0.5,
            role: 'style',
            description: [
                'Sets the minimum size (in px) of the rendered marker points, effective when',
                'the `pointcloud` shows a million or more points.'
            ].join(' ')
        },
        sizemax: {
            valType: 'number',
            min: 0.1,
            dflt: 20,
            role: 'style',
            description: [
                'Sets the maximum size (in px) of the rendered marker points.',
                'Effective when the `pointcloud` shows only few points.'
            ].join(' ')
        },
        border: {
            color: {
                valType: 'color',
                arrayOk: false,
                role: 'style',
                description: [
                    'Sets the stroke color. It accepts a specific color.',
                    'If the color is not fully opaque and there are hundreds of thousands',
                    'of points, it may cause slower zooming and panning.'
                ].join(' ')
            },
            arearatio: {
                valType: 'number',
                min: 0,
                max: 1,
                dflt: 0,
                role: 'style',
                description: [
                    'Specifies what fraction of the marker area is covered with the',
                    'border.'
                ].join(' ')
            }
        }
    }
};

},{"../scattergl/attributes":870}],830:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var createPointCloudRenderer = require('gl-pointcloud2d');

var str2RGBArray = require('../../lib/str2rgbarray');
var getTraceColor = require('../scatter/get_trace_color');

var AXES = ['xaxis', 'yaxis'];

function Pointcloud(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'pointcloud';

    this.pickXData = [];
    this.pickYData = [];
    this.xData = [];
    this.yData = [];
    this.textLabels = [];
    this.color = 'rgb(0, 0, 0)';
    this.name = '';
    this.hoverinfo = 'all';

    this.idToIndex = new Int32Array(0);
    this.bounds = [0, 0, 0, 0];

    this.pointcloudOptions = {
        positions: new Float32Array(0),
        idToIndex: this.idToIndex,
        sizemin: 0.5,
        sizemax: 12,
        color: [0, 0, 0, 1],
        areaRatio: 1,
        borderColor: [0, 0, 0, 1]
    };
    this.pointcloud = createPointCloudRenderer(scene.glplot, this.pointcloudOptions);
    this.pointcloud._trace = this; // scene2d requires this prop
}

var proto = Pointcloud.prototype;

proto.handlePick = function(pickResult) {

    var index = this.idToIndex[pickResult.pointId];

    // prefer the readout from XY, if present
    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: this.pickXYData ?
            [this.pickXYData[index * 2], this.pickXYData[index * 2 + 1]] :
            [this.pickXData[index], this.pickYData[index]],
        textLabel: Array.isArray(this.textLabels) ?
            this.textLabels[index] :
            this.textLabels,
        color: this.color,
        name: this.name,
        pointIndex: index,
        hoverinfo: this.hoverinfo
    };
};

proto.update = function(options) {

    this.textLabels = options.text;
    this.name = options.name;
    this.hoverinfo = options.hoverinfo;
    this.bounds = [Infinity, Infinity, -Infinity, -Infinity];

    this.updateFast(options);

    this.color = getTraceColor(options, {});
};

proto.updateFast = function(options) {
    var x = this.xData = this.pickXData = options.x;
    var y = this.yData = this.pickYData = options.y;
    var xy = this.pickXYData = options.xy;

    var userBounds = options.xbounds && options.ybounds;
    var index = options.indices;

    var len,
        idToIndex,
        positions,
        bounds = this.bounds;

    var xx, yy, i;

    if(xy) {

        positions = xy;

        // dividing xy.length by 2 and truncating to integer if xy.length was not even
        len = xy.length >>> 1;

        if(userBounds) {

            bounds[0] = options.xbounds[0];
            bounds[2] = options.xbounds[1];
            bounds[1] = options.ybounds[0];
            bounds[3] = options.ybounds[1];

        } else {

            for(i = 0; i < len; i++) {

                xx = positions[i * 2];
                yy = positions[i * 2 + 1];

                if(xx < bounds[0]) bounds[0] = xx;
                if(xx > bounds[2]) bounds[2] = xx;
                if(yy < bounds[1]) bounds[1] = yy;
                if(yy > bounds[3]) bounds[3] = yy;
            }

        }

        if(index) {

            idToIndex = index;

        } else {

            idToIndex = new Int32Array(len);

            for(i = 0; i < len; i++) {

                idToIndex[i] = i;

            }

        }

    } else {

        len = x.length;

        positions = new Float32Array(2 * len);
        idToIndex = new Int32Array(len);

        for(i = 0; i < len; i++) {
            xx = x[i];
            yy = y[i];

            idToIndex[i] = i;

            positions[i * 2] = xx;
            positions[i * 2 + 1] = yy;

            if(xx < bounds[0]) bounds[0] = xx;
            if(xx > bounds[2]) bounds[2] = xx;
            if(yy < bounds[1]) bounds[1] = yy;
            if(yy > bounds[3]) bounds[3] = yy;
        }

    }

    this.idToIndex = idToIndex;
    this.pointcloudOptions.idToIndex = idToIndex;

    this.pointcloudOptions.positions = positions;

    var markerColor = str2RGBArray(options.marker.color),
        borderColor = str2RGBArray(options.marker.border.color),
        opacity = options.opacity * options.marker.opacity;

    markerColor[3] *= opacity;
    this.pointcloudOptions.color = markerColor;

    // detect blending from the number of points, if undefined
    // because large data with blending hits performance
    var blend = options.marker.blend;
    if(blend === null) {
        var maxPoints = 100;
        blend = x.length < maxPoints || y.length < maxPoints;
    }
    this.pointcloudOptions.blend = blend;

    borderColor[3] *= opacity;
    this.pointcloudOptions.borderColor = borderColor;

    var markerSizeMin = options.marker.sizemin;
    var markerSizeMax = Math.max(options.marker.sizemax, options.marker.sizemin);
    this.pointcloudOptions.sizeMin = markerSizeMin;
    this.pointcloudOptions.sizeMax = markerSizeMax;
    this.pointcloudOptions.areaRatio = options.marker.border.arearatio;

    this.pointcloud.update(this.pointcloudOptions);

    // add item for autorange routine
    this.expandAxesFast(bounds, markerSizeMax / 2); // avoid axis reexpand just because of the adaptive point size
};

proto.expandAxesFast = function(bounds, markerSize) {
    var pad = markerSize || 0.5;
    var ax, min, max;

    for(var i = 0; i < 2; i++) {
        ax = this.scene[AXES[i]];

        min = ax._min;
        if(!min) min = [];
        min.push({ val: bounds[i], pad: pad });

        max = ax._max;
        if(!max) max = [];
        max.push({ val: bounds[i + 2], pad: pad });
    }
};

proto.dispose = function() {
    this.pointcloud.dispose();
};

function createPointcloud(scene, data) {
    var plot = new Pointcloud(scene, data.uid);
    plot.update(data);
    return plot;
}

module.exports = createPointcloud;

},{"../../lib/str2rgbarray":624,"../scatter/get_trace_color":842,"gl-pointcloud2d":205}],831:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var attributes = require('./attributes');

module.exports = function supplyDefaults(traceIn, traceOut, defaultColor) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    coerce('x');
    coerce('y');

    coerce('xbounds');
    coerce('ybounds');

    if(traceIn.xy && traceIn.xy instanceof Float32Array) {
        traceOut.xy = traceIn.xy;
    }

    if(traceIn.indices && traceIn.indices instanceof Int32Array) {
        traceOut.indices = traceIn.indices;
    }

    coerce('text');
    coerce('marker.color', defaultColor);
    coerce('marker.opacity');
    coerce('marker.blend');
    coerce('marker.sizemin');
    coerce('marker.sizemax');
    coerce('marker.border.color', defaultColor);
    coerce('marker.border.arearatio');
};

},{"../../lib":610,"./attributes":829}],832:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var pointcloud = {};

pointcloud.attributes = require('./attributes');
pointcloud.supplyDefaults = require('./defaults');

// reuse the Scatter3D 'dummy' calc step so that legends know what to do
pointcloud.calc = require('../scatter3d/calc');
pointcloud.plot = require('./convert');

pointcloud.moduleType = 'trace';
pointcloud.name = 'pointcloud';
pointcloud.basePlotModule = require('../../plots/gl2d');
pointcloud.categories = ['gl2d', 'showLegend'];
pointcloud.meta = {
    description: [
        'The data visualized as a point cloud set in `x` and `y`',
        'using the WebGl plotting engine.'
    ].join(' ')
};

module.exports = pointcloud;

},{"../../plots/gl2d":678,"../scatter3d/calc":858,"./attributes":829,"./convert":830,"./defaults":831}],833:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


// arrayOk attributes, merge them into calcdata array
module.exports = function arraysToCalcdata(cd, trace) {

    Lib.mergeArray(trace.text, cd, 'tx');
    Lib.mergeArray(trace.textposition, cd, 'tp');
    if(trace.textfont) {
        Lib.mergeArray(trace.textfont.size, cd, 'ts');
        Lib.mergeArray(trace.textfont.color, cd, 'tc');
        Lib.mergeArray(trace.textfont.family, cd, 'tf');
    }

    var marker = trace.marker;
    if(marker) {
        Lib.mergeArray(marker.size, cd, 'ms');
        Lib.mergeArray(marker.opacity, cd, 'mo');
        Lib.mergeArray(marker.symbol, cd, 'mx');
        Lib.mergeArray(marker.color, cd, 'mc');

        var markerLine = marker.line;
        if(marker.line) {
            Lib.mergeArray(markerLine.color, cd, 'mlc');
            Lib.mergeArray(markerLine.width, cd, 'mlw');
        }
    }
};

},{"../../lib":610}],834:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var colorAttributes = require('../../components/colorscale/color_attributes');
var errorBarAttrs = require('../../components/errorbars/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var Drawing = require('../../components/drawing');
var constants = require('./constants');
var extendFlat = require('../../lib/extend').extendFlat;

module.exports = {
    x: {
        valType: 'data_array',
        description: 'Sets the x coordinates.'
    },
    x0: {
        valType: 'any',
        dflt: 0,
        role: 'info',
        description: [
            'Alternate to `x`.',
            'Builds a linear space of x coordinates.',
            'Use with `dx`',
            'where `x0` is the starting coordinate and `dx` the step.'
        ].join(' ')
    },
    dx: {
        valType: 'number',
        dflt: 1,
        role: 'info',
        description: [
            'Sets the x coordinate step.',
            'See `x0` for more info.'
        ].join(' ')
    },
    y: {
        valType: 'data_array',
        description: 'Sets the y coordinates.'
    },
    y0: {
        valType: 'any',
        dflt: 0,
        role: 'info',
        description: [
            'Alternate to `y`.',
            'Builds a linear space of y coordinates.',
            'Use with `dy`',
            'where `y0` is the starting coordinate and `dy` the step.'
        ].join(' ')
    },
    dy: {
        valType: 'number',
        dflt: 1,
        role: 'info',
        description: [
            'Sets the y coordinate step.',
            'See `y0` for more info.'
        ].join(' ')
    },
    ids: {
        valType: 'data_array',
        description: 'A list of keys for object constancy of data points during animation'
    },
    text: {
        valType: 'string',
        role: 'info',
        dflt: '',
        arrayOk: true,
        description: [
            'Sets text elements associated with each (x,y) pair.',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of string, the items are mapped in order to the',
            'this trace\'s (x,y) coordinates.'
        ].join(' ')
    },
    mode: {
        valType: 'flaglist',
        flags: ['lines', 'markers', 'text'],
        extras: ['none'],
        role: 'info',
        description: [
            'Determines the drawing mode for this scatter trace.',
            'If the provided `mode` includes *text* then the `text` elements',
            'appear at the coordinates. Otherwise, the `text` elements',
            'appear on hover.',
            'If there are less than ' + constants.PTS_LINESONLY + ' points,',
            'then the default is *lines+markers*. Otherwise, *lines*.'
        ].join(' ')
    },
    hoveron: {
        valType: 'flaglist',
        flags: ['points', 'fills'],
        role: 'info',
        description: [
            'Do the hover effects highlight individual points (markers or',
            'line points) or do they highlight filled regions?',
            'If the fill is *toself* or *tonext* and there are no markers',
            'or text, then the default is *fills*, otherwise it is *points*.'
        ].join(' ')
    },
    line: {
        color: {
            valType: 'color',
            role: 'style',
            description: 'Sets the line color.'
        },
        width: {
            valType: 'number',
            min: 0,
            dflt: 2,
            role: 'style',
            description: 'Sets the line width (in px).'
        },
        shape: {
            valType: 'enumerated',
            values: ['linear', 'spline', 'hv', 'vh', 'hvh', 'vhv'],
            dflt: 'linear',
            role: 'style',
            description: [
                'Determines the line shape.',
                'With *spline* the lines are drawn using spline interpolation.',
                'The other available values correspond to step-wise line shapes.'
            ].join(' ')
        },
        smoothing: {
            valType: 'number',
            min: 0,
            max: 1.3,
            dflt: 1,
            role: 'style',
            description: [
                'Has an effect only if `shape` is set to *spline*',
                'Sets the amount of smoothing.',
                '*0* corresponds to no smoothing (equivalent to a *linear* shape).'
            ].join(' ')
        },
        dash: {
            valType: 'string',
            // string type usually doesn't take values... this one should really be
            // a special type or at least a special coercion function, from the GUI
            // you only get these values but elsewhere the user can supply a list of
            // dash lengths in px, and it will be honored
            values: ['solid', 'dot', 'dash', 'longdash', 'dashdot', 'longdashdot'],
            dflt: 'solid',
            role: 'style',
            description: [
                'Sets the style of the lines. Set to a dash string type',
                'or a dash length in px.'
            ].join(' ')
        },
        simplify: {
            valType: 'boolean',
            dflt: true,
            role: 'info',
            description: [
                'Simplifies lines by removing nearly-collinear points. When transitioning',
                'lines, it may be desirable to disable this so that the number of points',
                'along the resulting SVG path is unaffected.'
            ].join(' ')
        }
    },
    connectgaps: {
        valType: 'boolean',
        dflt: false,
        role: 'info',
        description: [
            'Determines whether or not gaps',
            '(i.e. {nan} or missing values)',
            'in the provided data arrays are connected.'
        ].join(' ')
    },
    fill: {
        valType: 'enumerated',
        values: ['none', 'tozeroy', 'tozerox', 'tonexty', 'tonextx', 'toself', 'tonext'],
        dflt: 'none',
        role: 'style',
        description: [
            'Sets the area to fill with a solid color.',
            'Use with `fillcolor` if not *none*.',
            '*tozerox* and *tozeroy* fill to x=0 and y=0 respectively.',
            '*tonextx* and *tonexty* fill between the endpoints of this',
            'trace and the endpoints of the trace before it, connecting those',
            'endpoints with straight lines (to make a stacked area graph);',
            'if there is no trace before it, they behave like *tozerox* and',
            '*tozeroy*.',
            '*toself* connects the endpoints of the trace (or each segment',
            'of the trace if it has gaps) into a closed shape.',
            '*tonext* fills the space between two traces if one completely',
            'encloses the other (eg consecutive contour lines), and behaves like',
            '*toself* if there is no trace before it. *tonext* should not be',
            'used if one trace does not enclose the other.'
        ].join(' ')
    },
    fillcolor: {
        valType: 'color',
        role: 'style',
        description: [
            'Sets the fill color.',
            'Defaults to a half-transparent variant of the line color,',
            'marker color, or marker line color, whichever is available.'
        ].join(' ')
    },
    marker: extendFlat({}, {
        symbol: {
            valType: 'enumerated',
            values: Drawing.symbolList,
            dflt: 'circle',
            arrayOk: true,
            role: 'style',
            description: [
                'Sets the marker symbol type.',
                'Adding 100 is equivalent to appending *-open* to a symbol name.',
                'Adding 200 is equivalent to appending *-dot* to a symbol name.',
                'Adding 300 is equivalent to appending *-open-dot*',
                'or *dot-open* to a symbol name.'
            ].join(' ')
        },
        opacity: {
            valType: 'number',
            min: 0,
            max: 1,
            arrayOk: true,
            role: 'style',
            description: 'Sets the marker opacity.'
        },
        size: {
            valType: 'number',
            min: 0,
            dflt: 6,
            arrayOk: true,
            role: 'style',
            description: 'Sets the marker size (in px).'
        },
        maxdisplayed: {
            valType: 'number',
            min: 0,
            dflt: 0,
            role: 'style',
            description: [
                'Sets a maximum number of points to be drawn on the graph.',
                '*0* corresponds to no limit.'
            ].join(' ')
        },
        sizeref: {
            valType: 'number',
            dflt: 1,
            role: 'style',
            description: [
                'Has an effect only if `marker.size` is set to a numerical array.',
                'Sets the scale factor used to determine the rendered size of',
                'marker points. Use with `sizemin` and `sizemode`.'
            ].join(' ')
        },
        sizemin: {
            valType: 'number',
            min: 0,
            dflt: 0,
            role: 'style',
            description: [
                'Has an effect only if `marker.size` is set to a numerical array.',
                'Sets the minimum size (in px) of the rendered marker points.'
            ].join(' ')
        },
        sizemode: {
            valType: 'enumerated',
            values: ['diameter', 'area'],
            dflt: 'diameter',
            role: 'info',
            description: [
                'Has an effect only if `marker.size` is set to a numerical array.',
                'Sets the rule for which the data in `size` is converted',
                'to pixels.'
            ].join(' ')
        },

        showscale: {
            valType: 'boolean',
            role: 'info',
            dflt: false,
            description: [
                'Has an effect only if `marker.color` is set to a numerical array.',
                'Determines whether or not a colorbar is displayed.'
            ].join(' ')
        },
        colorbar: colorbarAttrs,

        line: extendFlat({}, {
            width: {
                valType: 'number',
                min: 0,
                arrayOk: true,
                role: 'style',
                description: 'Sets the width (in px) of the lines bounding the marker points.'
            }
        },
            colorAttributes('marker.line')
        )
    },
        colorAttributes('marker')
    ),
    textposition: {
        valType: 'enumerated',
        values: [
            'top left', 'top center', 'top right',
            'middle left', 'middle center', 'middle right',
            'bottom left', 'bottom center', 'bottom right'
        ],
        dflt: 'middle center',
        arrayOk: true,
        role: 'style',
        description: [
            'Sets the positions of the `text` elements',
            'with respects to the (x,y) coordinates.'
        ].join(' ')
    },
    textfont: {
        family: {
            valType: 'string',
            role: 'style',
            noBlank: true,
            strict: true,
            arrayOk: true
        },
        size: {
            valType: 'number',
            role: 'style',
            min: 1,
            arrayOk: true
        },
        color: {
            valType: 'color',
            role: 'style',
            arrayOk: true
        },
        description: 'Sets the text font.'
    },

    r: {
        valType: 'data_array',
        description: [
            'For polar chart only.',
            'Sets the radial coordinates.'
        ].join('')
    },
    t: {
        valType: 'data_array',
        description: [
            'For polar chart only.',
            'Sets the angular coordinates.'
        ].join('')
    },

    error_y: errorBarAttrs,
    error_x: errorBarAttrs
};

},{"../../components/colorbar/attributes":511,"../../components/colorscale/color_attributes":517,"../../components/drawing":533,"../../components/errorbars/attributes":535,"../../lib/extend":603,"./constants":839}],835:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Axes = require('../../plots/cartesian/axes');

var subTypes = require('./subtypes');
var calcColorscale = require('./colorscale_calc');
var arraysToCalcdata = require('./arrays_to_calcdata');


module.exports = function calc(gd, trace) {
    var xa = Axes.getFromId(gd, trace.xaxis || 'x'),
        ya = Axes.getFromId(gd, trace.yaxis || 'y');

    var x = xa.makeCalcdata(trace, 'x'),
        y = ya.makeCalcdata(trace, 'y');

    var serieslen = Math.min(x.length, y.length),
        marker,
        s,
        i;

    // cancel minimum tick spacings (only applies to bars and boxes)
    xa._minDtick = 0;
    ya._minDtick = 0;

    if(x.length > serieslen) x.splice(serieslen, x.length - serieslen);
    if(y.length > serieslen) y.splice(serieslen, y.length - serieslen);

    // check whether bounds should be tight, padded, extended to zero...
    // most cases both should be padded on both ends, so start with that.
    var xOptions = {padded: true},
        yOptions = {padded: true};

    if(subTypes.hasMarkers(trace)) {

        // Treat size like x or y arrays --- Run d2c
        // this needs to go before ppad computation
        marker = trace.marker;
        s = marker.size;

        if(Array.isArray(s)) {
            // I tried auto-type but category and dates dont make much sense.
            var ax = {type: 'linear'};
            Axes.setConvert(ax);
            s = ax.makeCalcdata(trace.marker, 'size');
            if(s.length > serieslen) s.splice(serieslen, s.length - serieslen);
        }

        var sizeref = 1.6 * (trace.marker.sizeref || 1),
            markerTrans;
        if(trace.marker.sizemode === 'area') {
            markerTrans = function(v) {
                return Math.max(Math.sqrt((v || 0) / sizeref), 3);
            };
        }
        else {
            markerTrans = function(v) {
                return Math.max((v || 0) / sizeref, 3);
            };
        }
        xOptions.ppad = yOptions.ppad = Array.isArray(s) ?
            s.map(markerTrans) : markerTrans(s);
    }

    calcColorscale(trace);

    // TODO: text size

    // include zero (tight) and extremes (padded) if fill to zero
    // (unless the shape is closed, then it's just filling the shape regardless)
    if(((trace.fill === 'tozerox') ||
            ((trace.fill === 'tonextx') && gd.firstscatter)) &&
            ((x[0] !== x[serieslen - 1]) || (y[0] !== y[serieslen - 1]))) {
        xOptions.tozero = true;
    }

    // if no error bars, markers or text, or fill to y=0 remove x padding
    else if(!trace.error_y.visible && (
            ['tonexty', 'tozeroy'].indexOf(trace.fill) !== -1 ||
            (!subTypes.hasMarkers(trace) && !subTypes.hasText(trace))
        )) {
        xOptions.padded = false;
        xOptions.ppad = 0;
    }

    // now check for y - rather different logic, though still mostly padded both ends
    // include zero (tight) and extremes (padded) if fill to zero
    // (unless the shape is closed, then it's just filling the shape regardless)
    if(((trace.fill === 'tozeroy') || ((trace.fill === 'tonexty') && gd.firstscatter)) &&
            ((x[0] !== x[serieslen - 1]) || (y[0] !== y[serieslen - 1]))) {
        yOptions.tozero = true;
    }

    // tight y: any x fill
    else if(['tonextx', 'tozerox'].indexOf(trace.fill) !== -1) {
        yOptions.padded = false;
    }

    Axes.expand(xa, x, xOptions);
    Axes.expand(ya, y, yOptions);

    // create the "calculated data" to plot
    var cd = new Array(serieslen);
    for(i = 0; i < serieslen; i++) {
        cd[i] = (isNumeric(x[i]) && isNumeric(y[i])) ?
            {x: x[i], y: y[i]} : {x: false, y: false};

        if(trace.ids) {
            cd[i].id = String(trace.ids[i]);
        }
    }

    arraysToCalcdata(cd, trace);

    gd.firstscatter = false;
    return cd;
};

},{"../../plots/cartesian/axes":642,"./arrays_to_calcdata":833,"./colorscale_calc":838,"./subtypes":854,"fast-isnumeric":97}],836:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


// remove opacity for any trace that has a fill or is filled to
module.exports = function cleanData(fullData) {
    for(var i = 0; i < fullData.length; i++) {
        var tracei = fullData[i];
        if(tracei.type !== 'scatter') continue;

        var filli = tracei.fill;
        if(filli === 'none' || filli === 'toself') continue;

        tracei.opacity = undefined;

        if(filli === 'tonexty' || filli === 'tonextx') {
            for(var j = i - 1; j >= 0; j--) {
                var tracej = fullData[j];

                if((tracej.type === 'scatter') &&
                        (tracej.xaxis === tracei.xaxis) &&
                        (tracej.yaxis === tracei.yaxis)) {
                    tracej.opacity = undefined;
                    break;
                }
            }
        }
    }
};

},{}],837:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Colorscale = require('../../components/colorscale');
var drawColorbar = require('../../components/colorbar/draw');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        marker = trace.marker,
        cbId = 'cb' + trace.uid;

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    // TODO unify scatter and heatmap colorbar
    // TODO make Colorbar.draw support multiple colorbar per trace

    if((marker === undefined) || !marker.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var vals = marker.color,
        cmin = marker.cmin,
        cmax = marker.cmax;

    if(!isNumeric(cmin)) cmin = Lib.aggNums(Math.min, null, vals);
    if(!isNumeric(cmax)) cmax = Lib.aggNums(Math.max, null, vals);

    var cb = cd[0].t.cb = drawColorbar(gd, cbId);
    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            marker.colorscale,
            cmin,
            cmax
        ),
        { noNumericCheck: true }
    );

    cb.fillcolor(sclFunc)
        .filllevels({start: cmin, end: cmax, size: (cmax - cmin) / 254})
        .options(marker.colorbar)();
};

},{"../../components/colorbar/draw":513,"../../components/colorscale":524,"../../lib":610,"../../plots/plots":702,"fast-isnumeric":97}],838:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var hasColorscale = require('../../components/colorscale/has_colorscale');
var calcColorscale = require('../../components/colorscale/calc');

var subTypes = require('./subtypes');


module.exports = function calcMarkerColorscale(trace) {
    if(subTypes.hasLines(trace) && hasColorscale(trace, 'line')) {
        calcColorscale(trace, trace.line.color, 'line', 'c');
    }

    if(subTypes.hasMarkers(trace)) {
        if(hasColorscale(trace, 'marker')) {
            calcColorscale(trace, trace.marker.color, 'marker', 'c');
        }
        if(hasColorscale(trace, 'marker.line')) {
            calcColorscale(trace, trace.marker.line.color, 'marker.line', 'c');
        }
    }
};

},{"../../components/colorscale/calc":516,"../../components/colorscale/has_colorscale":523,"./subtypes":854}],839:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

module.exports = {
    PTS_LINESONLY: 20
};

},{}],840:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var attributes = require('./attributes');
var constants = require('./constants');
var subTypes = require('./subtypes');
var handleXYDefaults = require('./xy_defaults');
var handleMarkerDefaults = require('./marker_defaults');
var handleLineDefaults = require('./line_defaults');
var handleLineShapeDefaults = require('./line_shape_defaults');
var handleTextDefaults = require('./text_defaults');
var handleFillColorDefaults = require('./fillcolor_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYDefaults(traceIn, traceOut, layout, coerce),
        // TODO: default mode by orphan points...
        defaultMode = len < constants.PTS_LINESONLY ? 'lines+markers' : 'lines';
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('mode', defaultMode);
    coerce('ids');

    if(subTypes.hasLines(traceOut)) {
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
        handleLineShapeDefaults(traceIn, traceOut, coerce);
        coerce('connectgaps');
        coerce('line.simplify');
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasText(traceOut)) {
        handleTextDefaults(traceIn, traceOut, layout, coerce);
    }

    var dfltHoverOn = [];

    if(subTypes.hasMarkers(traceOut) || subTypes.hasText(traceOut)) {
        coerce('marker.maxdisplayed');
        dfltHoverOn.push('points');
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
        if(!subTypes.hasLines(traceOut)) handleLineShapeDefaults(traceIn, traceOut, coerce);
    }

    if(traceOut.fill === 'tonext' || traceOut.fill === 'toself') {
        dfltHoverOn.push('fills');
    }
    coerce('hoveron', dfltHoverOn.join('+') || 'points');

    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'y'});
    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
};

},{"../../components/errorbars/defaults":538,"../../lib":610,"./attributes":834,"./constants":839,"./fillcolor_defaults":841,"./line_defaults":845,"./line_shape_defaults":847,"./marker_defaults":850,"./subtypes":854,"./text_defaults":855,"./xy_defaults":856}],841:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');


module.exports = function fillColorDefaults(traceIn, traceOut, defaultColor, coerce) {
    var inheritColorFromMarker = false;

    if(traceOut.marker) {
        // don't try to inherit a color array
        var markerColor = traceOut.marker.color,
            markerLineColor = (traceOut.marker.line || {}).color;

        if(markerColor && !Array.isArray(markerColor)) {
            inheritColorFromMarker = markerColor;
        }
        else if(markerLineColor && !Array.isArray(markerLineColor)) {
            inheritColorFromMarker = markerLineColor;
        }
    }

    coerce('fillcolor', Color.addOpacity(
        (traceOut.line || {}).color ||
        inheritColorFromMarker ||
        defaultColor, 0.5
    ));
};

},{"../../components/color":510}],842:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');
var subtypes = require('./subtypes');


module.exports = function getTraceColor(trace, di) {
    var lc, tc;

    // TODO: text modes

    if(trace.mode === 'lines') {
        lc = trace.line.color;
        return (lc && Color.opacity(lc)) ?
            lc : trace.fillcolor;
    }
    else if(trace.mode === 'none') {
        return trace.fill ? trace.fillcolor : '';
    }
    else {
        var mc = di.mcc || (trace.marker || {}).color,
            mlc = di.mlcc || ((trace.marker || {}).line || {}).color;

        tc = (mc && Color.opacity(mc)) ? mc :
            (mlc && Color.opacity(mlc) &&
                (di.mlw || ((trace.marker || {}).line || {}).width)) ? mlc : '';

        if(tc) {
            // make sure the points aren't TOO transparent
            if(Color.opacity(tc) < 0.3) {
                return Color.addOpacity(tc, 0.3);
            }
            else return tc;
        }
        else {
            lc = (trace.line || {}).color;
            return (lc && Color.opacity(lc) &&
                subtypes.hasLines(trace) && trace.line.width) ?
                    lc : trace.fillcolor;
        }
    }
};

},{"../../components/color":510,"./subtypes":854}],843:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var Fx = require('../../plots/cartesian/graph_interact');
var constants = require('../../plots/cartesian/constants');
var ErrorBars = require('../../components/errorbars');
var getTraceColor = require('./get_trace_color');
var Color = require('../../components/color');


module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
    var cd = pointData.cd,
        trace = cd[0].trace,
        xa = pointData.xa,
        ya = pointData.ya,
        xpx = xa.c2p(xval),
        ypx = ya.c2p(yval),
        pt = [xpx, ypx];

    // look for points to hover on first, then take fills only if we
    // didn't find a point
    if(trace.hoveron.indexOf('points') !== -1) {
        var dx = function(di) {
                // scatter points: d.mrc is the calculated marker radius
                // adjust the distance so if you're inside the marker it
                // always will show up regardless of point size, but
                // prioritize smaller points
                var rad = Math.max(3, di.mrc || 0);
                return Math.max(Math.abs(xa.c2p(di.x) - xpx) - rad, 1 - 3 / rad);
            },
            dy = function(di) {
                var rad = Math.max(3, di.mrc || 0);
                return Math.max(Math.abs(ya.c2p(di.y) - ypx) - rad, 1 - 3 / rad);
            },
            dxy = function(di) {
                var rad = Math.max(3, di.mrc || 0),
                    dx = xa.c2p(di.x) - xpx,
                    dy = ya.c2p(di.y) - ypx;
                return Math.max(Math.sqrt(dx * dx + dy * dy) - rad, 1 - 3 / rad);
            },
            distfn = Fx.getDistanceFunction(hovermode, dx, dy, dxy);

        Fx.getClosest(cd, distfn, pointData);

        // skip the rest (for this trace) if we didn't find a close point
        if(pointData.index !== false) {

            // the closest data point
            var di = cd[pointData.index],
                xc = xa.c2p(di.x, true),
                yc = ya.c2p(di.y, true),
                rad = di.mrc || 1;

            Lib.extendFlat(pointData, {
                color: getTraceColor(trace, di),

                x0: xc - rad,
                x1: xc + rad,
                xLabelVal: di.x,

                y0: yc - rad,
                y1: yc + rad,
                yLabelVal: di.y
            });

            if(di.tx) pointData.text = di.tx;
            else if(trace.text) pointData.text = trace.text;

            ErrorBars.hoverInfo(di, trace, pointData);

            return [pointData];
        }
    }

    // even if hoveron is 'fills', only use it if we have polygons too
    if(trace.hoveron.indexOf('fills') !== -1 && trace._polygons) {
        var polygons = trace._polygons,
            polygonsIn = [],
            inside = false,
            xmin = Infinity,
            xmax = -Infinity,
            ymin = Infinity,
            ymax = -Infinity,
            i, j, polygon, pts, xCross, x0, x1, y0, y1;

        for(i = 0; i < polygons.length; i++) {
            polygon = polygons[i];
            // TODO: this is not going to work right for curved edges, it will
            // act as though they're straight. That's probably going to need
            // the elements themselves to capture the events. Worth it?
            if(polygon.contains(pt)) {
                inside = !inside;
                // TODO: need better than just the overall bounding box
                polygonsIn.push(polygon);
                ymin = Math.min(ymin, polygon.ymin);
                ymax = Math.max(ymax, polygon.ymax);
            }
        }

        if(inside) {
            // constrain ymin/max to the visible plot, so the label goes
            // at the middle of the piece you can see
            ymin = Math.max(ymin, 0);
            ymax = Math.min(ymax, ya._length);

            // find the overall left-most and right-most points of the
            // polygon(s) we're inside at their combined vertical midpoint.
            // This is where we will draw the hover label.
            // Note that this might not be the vertical midpoint of the
            // whole trace, if it's disjoint.
            var yAvg = (ymin + ymax) / 2;
            for(i = 0; i < polygonsIn.length; i++) {
                pts = polygonsIn[i].pts;
                for(j = 1; j < pts.length; j++) {
                    y0 = pts[j - 1][1];
                    y1 = pts[j][1];
                    if((y0 > yAvg) !== (y1 >= yAvg)) {
                        x0 = pts[j - 1][0];
                        x1 = pts[j][0];
                        xCross = x0 + (x1 - x0) * (yAvg - y0) / (y1 - y0);
                        xmin = Math.min(xmin, xCross);
                        xmax = Math.max(xmax, xCross);
                    }
                }
            }

            // constrain xmin/max to the visible plot now too
            xmin = Math.max(xmin, 0);
            xmax = Math.min(xmax, xa._length);

            // get only fill or line color for the hover color
            var color = Color.defaultLine;
            if(Color.opacity(trace.fillcolor)) color = trace.fillcolor;
            else if(Color.opacity((trace.line || {}).color)) {
                color = trace.line.color;
            }

            Lib.extendFlat(pointData, {
                // never let a 2D override 1D type as closest point
                distance: constants.MAXDIST + 10,
                x0: xmin,
                x1: xmax,
                y0: yAvg,
                y1: yAvg,
                color: color
            });

            delete pointData.index;

            if(trace.text && !Array.isArray(trace.text)) {
                pointData.text = String(trace.text);
            }
            else pointData.text = trace.name;

            return [pointData];
        }
    }
};

},{"../../components/color":510,"../../components/errorbars":539,"../../lib":610,"../../plots/cartesian/constants":647,"../../plots/cartesian/graph_interact":649,"./get_trace_color":842}],844:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Scatter = {};

var subtypes = require('./subtypes');
Scatter.hasLines = subtypes.hasLines;
Scatter.hasMarkers = subtypes.hasMarkers;
Scatter.hasText = subtypes.hasText;
Scatter.isBubble = subtypes.isBubble;

// traces with < this many points are by default shown
// with points and lines, > just get lines
Scatter.attributes = require('./attributes');
Scatter.supplyDefaults = require('./defaults');
Scatter.cleanData = require('./clean_data');
Scatter.calc = require('./calc');
Scatter.arraysToCalcdata = require('./arrays_to_calcdata');
Scatter.plot = require('./plot');
Scatter.colorbar = require('./colorbar');
Scatter.style = require('./style');
Scatter.hoverPoints = require('./hover');
Scatter.selectPoints = require('./select');
Scatter.animatable = true;

Scatter.moduleType = 'trace';
Scatter.name = 'scatter';
Scatter.basePlotModule = require('../../plots/cartesian');
Scatter.categories = ['cartesian', 'symbols', 'markerColorscale', 'errorBarsOK', 'showLegend'];
Scatter.meta = {
    description: [
        'The scatter trace type encompasses line charts, scatter charts, text charts, and bubble charts.',
        'The data visualized as scatter point or lines is set in `x` and `y`.',
        'Text (appearing either on the chart or on hover only) is via `text`.',
        'Bubble charts are achieved by setting `marker.size` and/or `marker.color`',
        'to numerical arrays.'
    ].join(' ')
};

module.exports = Scatter;

},{"../../plots/cartesian":650,"./arrays_to_calcdata":833,"./attributes":834,"./calc":835,"./clean_data":836,"./colorbar":837,"./defaults":840,"./hover":843,"./plot":851,"./select":852,"./style":853,"./subtypes":854}],845:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleDefaults = require('../../components/colorscale/defaults');


module.exports = function lineDefaults(traceIn, traceOut, defaultColor, layout, coerce) {
    var markerColor = (traceIn.marker || {}).color;

    coerce('line.color', defaultColor);

    if(hasColorscale(traceIn, 'line')) {
        colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'line.', cLetter: 'c'});
    }
    else {
        var lineColorDflt = (Array.isArray(markerColor) ? false : markerColor) || defaultColor;
        coerce('line.color', lineColorDflt);
    }

    coerce('line.width');
    coerce('line.dash');
};

},{"../../components/colorscale/defaults":519,"../../components/colorscale/has_colorscale":523}],846:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var BADNUM = require('../../constants/numerical').BADNUM;


module.exports = function linePoints(d, opts) {
    var xa = opts.xaxis,
        ya = opts.yaxis,
        simplify = opts.simplify,
        connectGaps = opts.connectGaps,
        baseTolerance = opts.baseTolerance,
        linear = opts.linear,
        segments = [],
        minTolerance = 0.2, // fraction of tolerance "so close we don't even consider it a new point"
        pts = new Array(d.length),
        pti = 0,
        i,

        // pt variables are pixel coordinates [x,y] of one point
        clusterStartPt, // these four are the outputs of clustering on a line
        clusterEndPt,
        clusterHighPt,
        clusterLowPt,
        thisPt, // "this" is the next point we're considering adding to the cluster

        clusterRefDist,
        clusterHighFirst, // did we encounter the high point first, then a low point, or vice versa?
        clusterUnitVector, // the first two points in the cluster determine its unit vector
                           // so the second is always in the "High" direction
        thisVector, // the pixel delta from clusterStartPt

        // val variables are (signed) pixel distances along the cluster vector
        clusterHighVal,
        clusterLowVal,
        thisVal,

        // deviation variables are (signed) pixel distances normal to the cluster vector
        clusterMinDeviation,
        clusterMaxDeviation,
        thisDeviation;

    if(!simplify) {
        baseTolerance = minTolerance = -1;
    }

    // turn one calcdata point into pixel coordinates
    function getPt(index) {
        var x = xa.c2p(d[index].x),
            y = ya.c2p(d[index].y);
        if(x === BADNUM || y === BADNUM) return false;
        return [x, y];
    }

    // if we're off-screen, increase tolerance over baseTolerance
    function getTolerance(pt) {
        var xFrac = pt[0] / xa._length,
            yFrac = pt[1] / ya._length;
        return (1 + 10 * Math.max(0, -xFrac, xFrac - 1, -yFrac, yFrac - 1)) * baseTolerance;
    }

    function ptDist(pt1, pt2) {
        var dx = pt1[0] - pt2[0],
            dy = pt1[1] - pt2[1];
        return Math.sqrt(dx * dx + dy * dy);
    }

    // loop over ALL points in this trace
    for(i = 0; i < d.length; i++) {
        clusterStartPt = getPt(i);
        if(!clusterStartPt) continue;

        pti = 0;
        pts[pti++] = clusterStartPt;

        // loop over one segment of the trace
        for(i++; i < d.length; i++) {
            clusterHighPt = getPt(i);
            if(!clusterHighPt) {
                if(connectGaps) continue;
                else break;
            }

            // can't decimate if nonlinear line shape
            // TODO: we *could* decimate [hv]{2,3} shapes if we restricted clusters to horz or vert again
            // but spline would be verrry awkward to decimate
            if(!linear) {
                pts[pti++] = clusterHighPt;
                continue;
            }

            clusterRefDist = ptDist(clusterHighPt, clusterStartPt);

            if(clusterRefDist < getTolerance(clusterHighPt) * minTolerance) continue;

            clusterUnitVector = [
                (clusterHighPt[0] - clusterStartPt[0]) / clusterRefDist,
                (clusterHighPt[1] - clusterStartPt[1]) / clusterRefDist
            ];

            clusterLowPt = clusterStartPt;
            clusterHighVal = clusterRefDist;
            clusterLowVal = clusterMinDeviation = clusterMaxDeviation = 0;
            clusterHighFirst = false;
            clusterEndPt = clusterHighPt;

            // loop over one cluster of points that collapse onto one line
            for(i++; i < d.length; i++) {
                thisPt = getPt(i);
                if(!thisPt) {
                    if(connectGaps) continue;
                    else break;
                }
                thisVector = [
                    thisPt[0] - clusterStartPt[0],
                    thisPt[1] - clusterStartPt[1]
                ];
                // cross product (or dot with normal to the cluster vector)
                thisDeviation = thisVector[0] * clusterUnitVector[1] - thisVector[1] * clusterUnitVector[0];
                clusterMinDeviation = Math.min(clusterMinDeviation, thisDeviation);
                clusterMaxDeviation = Math.max(clusterMaxDeviation, thisDeviation);

                if(clusterMaxDeviation - clusterMinDeviation > getTolerance(thisPt)) break;

                clusterEndPt = thisPt;
                thisVal = thisVector[0] * clusterUnitVector[0] + thisVector[1] * clusterUnitVector[1];

                if(thisVal > clusterHighVal) {
                    clusterHighVal = thisVal;
                    clusterHighPt = thisPt;
                    clusterHighFirst = false;
                } else if(thisVal < clusterLowVal) {
                    clusterLowVal = thisVal;
                    clusterLowPt = thisPt;
                    clusterHighFirst = true;
                }
            }

            // insert this cluster into pts
            // we've already inserted the start pt, now check if we have high and low pts
            if(clusterHighFirst) {
                pts[pti++] = clusterHighPt;
                if(clusterEndPt !== clusterLowPt) pts[pti++] = clusterLowPt;
            } else {
                if(clusterLowPt !== clusterStartPt) pts[pti++] = clusterLowPt;
                if(clusterEndPt !== clusterHighPt) pts[pti++] = clusterHighPt;
            }
            // and finally insert the end pt
            pts[pti++] = clusterEndPt;

            // have we reached the end of this segment?
            if(i >= d.length || !thisPt) break;

            // otherwise we have an out-of-cluster point to insert as next clusterStartPt
            pts[pti++] = thisPt;
            clusterStartPt = thisPt;
        }

        segments.push(pts.slice(0, pti));
    }

    return segments;
};

},{"../../constants/numerical":593}],847:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


// common to 'scatter' and 'scatterternary'
module.exports = function handleLineShapeDefaults(traceIn, traceOut, coerce) {
    var shape = coerce('line.shape');
    if(shape === 'spline') coerce('line.smoothing');
};

},{}],848:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

module.exports = function linkTraces(gd, plotinfo, cdscatter) {
    var cd, trace;
    var prevtrace = null;

    for(var i = 0; i < cdscatter.length; ++i) {
        cd = cdscatter[i];
        trace = cd[0].trace;

        // Note: The check which ensures all cdscatter here are for the same axis and
        // are either cartesian or scatterternary has been removed. This code assumes
        // the passed scattertraces have been filtered to the proper plot types and
        // the proper subplots.
        if(trace.visible === true) {
            trace._nexttrace = null;

            if(['tonextx', 'tonexty', 'tonext'].indexOf(trace.fill) !== -1) {
                trace._prevtrace = prevtrace;

                if(prevtrace) {
                    prevtrace._nexttrace = trace;
                }
            }

            prevtrace = trace;
        } else {
            trace._prevtrace = trace._nexttrace = null;
        }
    }
};

},{}],849:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');


// used in the drawing step for 'scatter' and 'scattegeo' and
// in the convert step for 'scatter3d'
module.exports = function makeBubbleSizeFn(trace) {
    var marker = trace.marker,
        sizeRef = marker.sizeref || 1,
        sizeMin = marker.sizemin || 0;

    // for bubble charts, allow scaling the provided value linearly
    // and by area or diameter.
    // Note this only applies to the array-value sizes

    var baseFn = (marker.sizemode === 'area') ?
            function(v) { return Math.sqrt(v / sizeRef); } :
            function(v) { return v / sizeRef; };

    // TODO add support for position/negative bubbles?
    // TODO add 'sizeoffset' attribute?
    return function(v) {
        var baseSize = baseFn(v / 2);

        // don't show non-numeric and negative sizes
        return (isNumeric(baseSize) && (baseSize > 0)) ?
            Math.max(baseSize, sizeMin) :
            0;
    };
};

},{"fast-isnumeric":97}],850:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Color = require('../../components/color');
var hasColorscale = require('../../components/colorscale/has_colorscale');
var colorscaleDefaults = require('../../components/colorscale/defaults');

var subTypes = require('./subtypes');


module.exports = function markerDefaults(traceIn, traceOut, defaultColor, layout, coerce) {
    var isBubble = subTypes.isBubble(traceIn),
        lineColor = (traceIn.line || {}).color,
        defaultMLC;

    // marker.color inherit from line.color (even if line.color is an array)
    if(lineColor) defaultColor = lineColor;

    coerce('marker.symbol');
    coerce('marker.opacity', isBubble ? 0.7 : 1);
    coerce('marker.size');

    coerce('marker.color', defaultColor);
    if(hasColorscale(traceIn, 'marker')) {
        colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'marker.', cLetter: 'c'});
    }

    // if there's a line with a different color than the marker, use
    // that line color as the default marker line color
    // (except when it's an array)
    // mostly this is for transparent markers to behave nicely
    if(lineColor && !Array.isArray(lineColor) && (traceOut.marker.color !== lineColor)) {
        defaultMLC = lineColor;
    }
    else if(isBubble) defaultMLC = Color.background;
    else defaultMLC = Color.defaultLine;

    coerce('marker.line.color', defaultMLC);
    if(hasColorscale(traceIn, 'marker.line')) {
        colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'marker.line.', cLetter: 'c'});
    }

    coerce('marker.line.width', isBubble ? 1 : 0);

    if(isBubble) {
        coerce('marker.sizeref');
        coerce('marker.sizemin');
        coerce('marker.sizemode');
    }
};

},{"../../components/color":510,"../../components/colorscale/defaults":519,"../../components/colorscale/has_colorscale":523,"./subtypes":854}],851:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Lib = require('../../lib');
var Drawing = require('../../components/drawing');
var ErrorBars = require('../../components/errorbars');

var subTypes = require('./subtypes');
var linePoints = require('./line_points');
var linkTraces = require('./link_traces');
var polygonTester = require('../../lib/polygon').tester;

module.exports = function plot(gd, plotinfo, cdscatter, transitionOpts, makeOnCompleteCallback) {
    var i, uids, selection, join, onComplete;

    var scatterlayer = plotinfo.plot.select('g.scatterlayer');

    // If transition config is provided, then it is only a partial replot and traces not
    // updated are removed.
    var isFullReplot = !transitionOpts;
    var hasTransition = !!transitionOpts && transitionOpts.duration > 0;

    selection = scatterlayer.selectAll('g.trace');

    join = selection.data(cdscatter, function(d) { return d[0].trace.uid; });

    // Append new traces:
    join.enter().append('g')
        .attr('class', function(d) {
            return 'trace scatter trace' + d[0].trace.uid;
        })
        .style('stroke-miterlimit', 2);

    // After the elements are created but before they've been draw, we have to perform
    // this extra step of linking the traces. This allows appending of fill layers so that
    // the z-order of fill layers is correct.
    linkTraces(gd, plotinfo, cdscatter);

    createFills(gd, scatterlayer);

    // Sort the traces, once created, so that the ordering is preserved even when traces
    // are shown and hidden. This is needed since we're not just wiping everything out
    // and recreating on every update.
    for(i = 0, uids = []; i < cdscatter.length; i++) {
        uids[i] = cdscatter[i][0].trace.uid;
    }

    scatterlayer.selectAll('g.trace').sort(function(a, b) {
        var idx1 = uids.indexOf(a[0].trace.uid);
        var idx2 = uids.indexOf(b[0].trace.uid);
        return idx1 > idx2 ? 1 : -1;
    });

    if(hasTransition) {
        if(makeOnCompleteCallback) {
            // If it was passed a callback to register completion, make a callback. If
            // this is created, then it must be executed on completion, otherwise the
            // pos-transition redraw will not execute:
            onComplete = makeOnCompleteCallback();
        }

        var transition = d3.transition()
            .duration(transitionOpts.duration)
            .ease(transitionOpts.easing)
            .each('end', function() {
                onComplete && onComplete();
            })
            .each('interrupt', function() {
                onComplete && onComplete();
            });

        transition.each(function() {
            // Must run the selection again since otherwise enters/updates get grouped together
            // and these get executed out of order. Except we need them in order!
            scatterlayer.selectAll('g.trace').each(function(d, i) {
                plotOne(gd, i, plotinfo, d, cdscatter, this, transitionOpts);
            });
        });
    } else {
        scatterlayer.selectAll('g.trace').each(function(d, i) {
            plotOne(gd, i, plotinfo, d, cdscatter, this, transitionOpts);
        });
    }

    if(isFullReplot) {
        join.exit().remove();
    }

    // remove paths that didn't get used
    scatterlayer.selectAll('path:not([d])').remove();
};

function createFills(gd, scatterlayer) {
    var trace;

    scatterlayer.selectAll('g.trace').each(function(d) {
        var tr = d3.select(this);

        // Loop only over the traces being redrawn:
        trace = d[0].trace;

        // make the fill-to-next path now for the NEXT trace, so it shows
        // behind both lines.
        if(trace._nexttrace) {
            trace._nextFill = tr.select('.js-fill.js-tonext');
            if(!trace._nextFill.size()) {

                // If there is an existing tozero fill, we must insert this *after* that fill:
                var loc = ':first-child';
                if(tr.select('.js-fill.js-tozero').size()) {
                    loc += ' + *';
                }

                trace._nextFill = tr.insert('path', loc).attr('class', 'js-fill js-tonext');
            }
        } else {
            tr.selectAll('.js-fill.js-tonext').remove();
            trace._nextFill = null;
        }

        if(trace.fill && (trace.fill.substr(0, 6) === 'tozero' || trace.fill === 'toself' ||
                (trace.fill.substr(0, 2) === 'to' && !trace._prevtrace))) {
            trace._ownFill = tr.select('.js-fill.js-tozero');
            if(!trace._ownFill.size()) {
                trace._ownFill = tr.insert('path', ':first-child').attr('class', 'js-fill js-tozero');
            }
        } else {
            tr.selectAll('.js-fill.js-tozero').remove();
            trace._ownFill = null;
        }
    });
}

function plotOne(gd, idx, plotinfo, cdscatter, cdscatterAll, element, transitionOpts) {
    var join, i;

    // Since this has been reorganized and we're executing this on individual traces,
    // we need to pass it the full list of cdscatter as well as this trace's index (idx)
    // since it does an internal n^2 loop over comparisons with other traces:
    selectMarkers(gd, idx, plotinfo, cdscatter, cdscatterAll);

    var hasTransition = !!transitionOpts && transitionOpts.duration > 0;

    function transition(selection) {
        return hasTransition ? selection.transition() : selection;
    }

    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis;

    var trace = cdscatter[0].trace,
        line = trace.line,
        tr = d3.select(element);

    // (so error bars can find them along with bars)
    // error bars are at the bottom
    tr.call(ErrorBars.plot, plotinfo, transitionOpts);

    if(trace.visible !== true) return;

    transition(tr).style('opacity', trace.opacity);

    // BUILD LINES AND FILLS
    var ownFillEl3, tonext;
    var ownFillDir = trace.fill.charAt(trace.fill.length - 1);
    if(ownFillDir !== 'x' && ownFillDir !== 'y') ownFillDir = '';

    // store node for tweaking by selectPoints
    cdscatter[0].node3 = tr;

    var prevRevpath = '';
    var prevPolygons = [];
    var prevtrace = trace._prevtrace;

    if(prevtrace) {
        prevRevpath = prevtrace._prevRevpath || '';
        tonext = prevtrace._nextFill;
        prevPolygons = prevtrace._polygons;
    }

    var thispath,
        thisrevpath,
        // fullpath is all paths for this curve, joined together straight
        // across gaps, for filling
        fullpath = '',
        // revpath is fullpath reversed, for fill-to-next
        revpath = '',
        // functions for converting a point array to a path
        pathfn, revpathbase, revpathfn,
        // variables used before and after the data join
        pt0, lastSegment, pt1, thisPolygons;

    // initialize line join data / method
    var segments = [],
        lineSegments = [],
        makeUpdate = Lib.noop;

    ownFillEl3 = trace._ownFill;

    if(subTypes.hasLines(trace) || trace.fill !== 'none') {

        if(tonext) {
            // This tells .style which trace to use for fill information:
            tonext.datum(cdscatter);
        }

        if(['hv', 'vh', 'hvh', 'vhv'].indexOf(line.shape) !== -1) {
            pathfn = Drawing.steps(line.shape);
            revpathbase = Drawing.steps(
                line.shape.split('').reverse().join('')
            );
        }
        else if(line.shape === 'spline') {
            pathfn = revpathbase = function(pts) {
                var pLast = pts[pts.length - 1];
                if(pts[0][0] === pLast[0] && pts[0][1] === pLast[1]) {
                    // identical start and end points: treat it as a
                    // closed curve so we don't get a kink
                    return Drawing.smoothclosed(pts.slice(1), line.smoothing);
                }
                else {
                    return Drawing.smoothopen(pts, line.smoothing);
                }
            };
        }
        else {
            pathfn = revpathbase = function(pts) {
                return 'M' + pts.join('L');
            };
        }

        revpathfn = function(pts) {
            // note: this is destructive (reverses pts in place) so can't use pts after this
            return revpathbase(pts.reverse());
        };

        segments = linePoints(cdscatter, {
            xaxis: xa,
            yaxis: ya,
            connectGaps: trace.connectgaps,
            baseTolerance: Math.max(line.width || 1, 3) / 4,
            linear: line.shape === 'linear',
            simplify: line.simplify
        });

        // since we already have the pixel segments here, use them to make
        // polygons for hover on fill
        // TODO: can we skip this if hoveron!=fills? That would mean we
        // need to redraw when you change hoveron...
        thisPolygons = trace._polygons = new Array(segments.length);
        for(i = 0; i < segments.length; i++) {
            trace._polygons[i] = polygonTester(segments[i]);
        }

        if(segments.length) {
            pt0 = segments[0][0];
            lastSegment = segments[segments.length - 1];
            pt1 = lastSegment[lastSegment.length - 1];
        }

        lineSegments = segments.filter(function(s) {
            return s.length > 1;
        });

        makeUpdate = function(isEnter) {
            return function(pts) {
                thispath = pathfn(pts);
                thisrevpath = revpathfn(pts);
                if(!fullpath) {
                    fullpath = thispath;
                    revpath = thisrevpath;
                }
                else if(ownFillDir) {
                    fullpath += 'L' + thispath.substr(1);
                    revpath = thisrevpath + ('L' + revpath.substr(1));
                }
                else {
                    fullpath += 'Z' + thispath;
                    revpath = thisrevpath + 'Z' + revpath;
                }

                if(subTypes.hasLines(trace) && pts.length > 1) {
                    var el = d3.select(this);

                    // This makes the coloring work correctly:
                    el.datum(cdscatter);

                    if(isEnter) {
                        transition(el.style('opacity', 0)
                            .attr('d', thispath)
                            .call(Drawing.lineGroupStyle))
                                .style('opacity', 1);
                    } else {
                        var sel = transition(el);
                        sel.attr('d', thispath);
                        Drawing.singleLineStyle(cdscatter, sel);
                    }
                }
            };
        };
    }

    var lineJoin = tr.selectAll('.js-line').data(lineSegments);

    transition(lineJoin.exit())
        .style('opacity', 0)
        .remove();

    lineJoin.each(makeUpdate(false));

    lineJoin.enter().append('path')
        .classed('js-line', true)
        .style('vector-effect', 'non-scaling-stroke')
        .call(Drawing.lineGroupStyle)
        .each(makeUpdate(true));

    if(segments.length) {
        if(ownFillEl3) {
            if(pt0 && pt1) {
                if(ownFillDir) {
                    if(ownFillDir === 'y') {
                        pt0[1] = pt1[1] = ya.c2p(0, true);
                    }
                    else if(ownFillDir === 'x') {
                        pt0[0] = pt1[0] = xa.c2p(0, true);
                    }

                    // fill to zero: full trace path, plus extension of
                    // the endpoints to the appropriate axis
                    // For the sake of animations, wrap the points around so that
                    // the points on the axes are the first two points. Otherwise
                    // animations get a little crazy if the number of points changes.
                    transition(ownFillEl3).attr('d', 'M' + pt1 + 'L' + pt0 + 'L' + fullpath.substr(1));
                } else {
                    // fill to self: just join the path to itself
                    transition(ownFillEl3).attr('d', fullpath + 'Z');
                }
            }
        }
        else if(trace.fill.substr(0, 6) === 'tonext' && fullpath && prevRevpath) {
            // fill to next: full trace path, plus the previous path reversed
            if(trace.fill === 'tonext') {
                // tonext: for use by concentric shapes, like manually constructed
                // contours, we just add the two paths closed on themselves.
                // This makes strange results if one path is *not* entirely
                // inside the other, but then that is a strange usage.
                transition(tonext).attr('d', fullpath + 'Z' + prevRevpath + 'Z');
            }
            else {
                // tonextx/y: for now just connect endpoints with lines. This is
                // the correct behavior if the endpoints are at the same value of
                // y/x, but if they *aren't*, we should ideally do more complicated
                // things depending on whether the new endpoint projects onto the
                // existing curve or off the end of it
                transition(tonext).attr('d', fullpath + 'L' + prevRevpath.substr(1) + 'Z');
            }
            trace._polygons = trace._polygons.concat(prevPolygons);
        }
        trace._prevRevpath = revpath;
        trace._prevPolygons = thisPolygons;
    }


    function visFilter(d) {
        return d.filter(function(v) { return v.vis; });
    }

    function keyFunc(d) {
        return d.id;
    }

    // Returns a function if the trace is keyed, otherwise returns undefined
    function getKeyFunc(trace) {
        if(trace.ids) {
            return keyFunc;
        }
    }

    function hideFilter() {
        return false;
    }

    function makePoints(d) {
        var join, selection;

        var trace = d[0].trace,
            s = d3.select(this),
            showMarkers = subTypes.hasMarkers(trace),
            showText = subTypes.hasText(trace);

        var keyFunc = getKeyFunc(trace),
            markerFilter = hideFilter,
            textFilter = hideFilter;

        if(showMarkers) {
            markerFilter = trace.marker.maxdisplayed ? visFilter : Lib.identity;
        }

        if(showText) {
            textFilter = trace.marker.maxdisplayed ? visFilter : Lib.identity;
        }

        // marker points

        selection = s.selectAll('path.point');

        join = selection.data(markerFilter, keyFunc);

        var enter = join.enter().append('path')
            .classed('point', true);

        enter.call(Drawing.pointStyle, trace)
            .call(Drawing.translatePoints, xa, ya, trace);

        if(hasTransition) {
            enter.style('opacity', 0).transition()
                .style('opacity', 1);
        }

        join.each(function(d) {
            var sel = transition(d3.select(this));
            Drawing.translatePoint(d, sel, xa, ya);
            Drawing.singlePointStyle(d, sel, trace);
        });

        if(hasTransition) {
            join.exit().transition()
                .style('opacity', 0)
                .remove();
        } else {
            join.exit().remove();
        }

        // text points
        selection = s.selectAll('g');
        join = selection.data(textFilter, keyFunc);

        // each text needs to go in its own 'g' in case
        // it gets converted to mathjax
        join.enter().append('g').append('text');

        join.each(function(d) {
            var sel = transition(d3.select(this).select('text'));
            Drawing.translatePoint(d, sel, xa, ya);
        });

        join.selectAll('text')
            .call(Drawing.textPointStyle, trace)
            .each(function(d) {

                // This just *has* to be totally custom becuase of SVG text positioning :(
                // It's obviously copied from translatePoint; we just can't use that
                //
                // put xp and yp into d if pixel scaling is already done
                var x = d.xp || xa.c2p(d.x),
                    y = d.yp || ya.c2p(d.y);

                d3.select(this).selectAll('tspan').each(function() {
                    transition(d3.select(this)).attr({x: x, y: y});
                });
            });

        join.exit().remove();
    }

    // NB: selectAll is evaluated on instantiation:
    var pointSelection = tr.selectAll('.points');

    // Join with new data
    join = pointSelection.data([cdscatter]);

    // Transition existing, but don't defer this to an async .transition since
    // there's no timing involved:
    pointSelection.each(makePoints);

    join.enter().append('g')
        .classed('points', true)
        .each(makePoints);

    join.exit().remove();
}

function selectMarkers(gd, idx, plotinfo, cdscatter, cdscatterAll) {
    var xa = plotinfo.xaxis,
        ya = plotinfo.yaxis,
        xr = d3.extent(Lib.simpleMap(xa.range, xa.r2c)),
        yr = d3.extent(Lib.simpleMap(ya.range, ya.r2c));

    var trace = cdscatter[0].trace;
    if(!subTypes.hasMarkers(trace)) return;
    // if marker.maxdisplayed is used, select a maximum of
    // mnum markers to show, from the set that are in the viewport
    var mnum = trace.marker.maxdisplayed;

    // TODO: remove some as we get away from the viewport?
    if(mnum === 0) return;

    var cd = cdscatter.filter(function(v) {
            return v.x >= xr[0] && v.x <= xr[1] && v.y >= yr[0] && v.y <= yr[1];
        }),
        inc = Math.ceil(cd.length / mnum),
        tnum = 0;
    cdscatterAll.forEach(function(cdj, j) {
        var tracei = cdj[0].trace;
        if(subTypes.hasMarkers(tracei) &&
                tracei.marker.maxdisplayed > 0 && j < idx) {
            tnum++;
        }
    });

    // if multiple traces use maxdisplayed, stagger which markers we
    // display this formula offsets successive traces by 1/3 of the
    // increment, adding an extra small amount after each triplet so
    // it's not quite periodic
    var i0 = Math.round(tnum * inc / 3 + Math.floor(tnum / 3) * inc / 7.1);

    // for error bars: save in cd which markers to show
    // so we don't have to repeat this
    cdscatter.forEach(function(v) { delete v.vis; });
    cd.forEach(function(v, i) {
        if(Math.round((i + i0) % inc) === 0) v.vis = true;
    });
}

},{"../../components/drawing":533,"../../components/errorbars":539,"../../lib":610,"../../lib/polygon":618,"./line_points":846,"./link_traces":848,"./subtypes":854,"d3":86}],852:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var subtypes = require('./subtypes');

var DESELECTDIM = 0.2;

module.exports = function selectPoints(searchInfo, polygon) {
    var cd = searchInfo.cd,
        xa = searchInfo.xaxis,
        ya = searchInfo.yaxis,
        selection = [],
        trace = cd[0].trace,
        curveNumber = trace.index,
        marker = trace.marker,
        i,
        di,
        x,
        y;

    // TODO: include lines? that would require per-segment line properties
    var hasOnlyLines = (!subtypes.hasMarkers(trace) && !subtypes.hasText(trace));
    if(trace.visible !== true || hasOnlyLines) return;

    var opacity = Array.isArray(marker.opacity) ? 1 : marker.opacity;

    if(polygon === false) { // clear selection
        for(i = 0; i < cd.length; i++) cd[i].dim = 0;
    }
    else {
        for(i = 0; i < cd.length; i++) {
            di = cd[i];
            x = xa.c2p(di.x);
            y = ya.c2p(di.y);
            if(polygon.contains([x, y])) {
                selection.push({
                    curveNumber: curveNumber,
                    pointNumber: i,
                    x: di.x,
                    y: di.y,
                    id: di.id
                });
                di.dim = 0;
            }
            else di.dim = 1;
        }
    }

    // do the dimming here, as well as returning the selection
    // The logic here duplicates Drawing.pointStyle, but I don't want
    // d.dim in pointStyle in case something goes wrong with selection.
    cd[0].node3.selectAll('path.point')
        .style('opacity', function(d) {
            return ((d.mo + 1 || opacity + 1) - 1) * (d.dim ? DESELECTDIM : 1);
        });
    cd[0].node3.selectAll('text')
        .style('opacity', function(d) {
            return d.dim ? DESELECTDIM : 1;
        });

    return selection;
};

},{"./subtypes":854}],853:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Drawing = require('../../components/drawing');
var ErrorBars = require('../../components/errorbars');


module.exports = function style(gd) {
    var s = d3.select(gd).selectAll('g.trace.scatter');

    s.style('opacity', function(d) {
        return d[0].trace.opacity;
    });

    s.selectAll('g.points')
        .each(function(d) {
            d3.select(this).selectAll('path.point')
                .call(Drawing.pointStyle, d.trace || d[0].trace);
            d3.select(this).selectAll('text')
                .call(Drawing.textPointStyle, d.trace || d[0].trace);
        });

    s.selectAll('g.trace path.js-line')
        .call(Drawing.lineGroupStyle);

    s.selectAll('g.trace path.js-fill')
        .call(Drawing.fillGroupStyle);

    s.call(ErrorBars.style);
};

},{"../../components/drawing":533,"../../components/errorbars":539,"d3":86}],854:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

module.exports = {
    hasLines: function(trace) {
        return trace.visible && trace.mode &&
            trace.mode.indexOf('lines') !== -1;
    },

    hasMarkers: function(trace) {
        return trace.visible && trace.mode &&
            trace.mode.indexOf('markers') !== -1;
    },

    hasText: function(trace) {
        return trace.visible && trace.mode &&
            trace.mode.indexOf('text') !== -1;
    },

    isBubble: function(trace) {
        return Lib.isPlainObject(trace.marker) &&
            Array.isArray(trace.marker.size);
    }
};

},{"../../lib":610}],855:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');


// common to 'scatter', 'scatter3d' and 'scattergeo'
module.exports = function(traceIn, traceOut, layout, coerce) {
    coerce('textposition');
    Lib.coerceFont(coerce, 'textfont', layout.font);
};

},{"../../lib":610}],856:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');


module.exports = function handleXYDefaults(traceIn, traceOut, layout, coerce) {
    var len,
        x = coerce('x'),
        y = coerce('y');

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y'], layout);

    if(x) {
        if(y) {
            len = Math.min(x.length, y.length);
            // TODO: not sure we should do this here... but I think
            // the way it works in calc is wrong, because it'll delete data
            // which could be a problem eg in streaming / editing if x and y
            // come in at different times
            // so we need to revisit calc before taking this out
            if(len < x.length) traceOut.x = x.slice(0, len);
            if(len < y.length) traceOut.y = y.slice(0, len);
        }
        else {
            len = x.length;
            coerce('y0');
            coerce('dy');
        }
    }
    else {
        if(!y) return 0;

        len = traceOut.y.length;
        coerce('x0');
        coerce('dx');
    }
    return len;
};

},{"../../registry":717}],857:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorAttributes = require('../../components/colorscale/color_attributes');
var errorBarAttrs = require('../../components/errorbars/attributes');

var MARKER_SYMBOLS = require('../../constants/gl_markers');
var extendFlat = require('../../lib/extend').extendFlat;

var scatterLineAttrs = scatterAttrs.line,
    scatterMarkerAttrs = scatterAttrs.marker,
    scatterMarkerLineAttrs = scatterMarkerAttrs.line;

function makeProjectionAttr(axLetter) {
    return {
        show: {
            valType: 'boolean',
            role: 'info',
            dflt: false,
            description: [
                'Sets whether or not projections are shown along the',
                axLetter, 'axis.'
            ].join(' ')
        },
        opacity: {
            valType: 'number',
            role: 'style',
            min: 0,
            max: 1,
            dflt: 1,
            description: 'Sets the projection color.'
        },
        scale: {
            valType: 'number',
            role: 'style',
            min: 0,
            max: 10,
            dflt: 2 / 3,
            description: [
                'Sets the scale factor determining the size of the',
                'projection marker points.'
            ].join(' ')
        }
    };
}

module.exports = {
    x: {
        valType: 'data_array',
        description: 'Sets the x coordinates.'
    },
    y: {
        valType: 'data_array',
        description: 'Sets the y coordinates.'
    },
    z: {
        valType: 'data_array',
        description: 'Sets the z coordinates.'
    },

    text: extendFlat({}, scatterAttrs.text, {
        description: [
            'Sets text elements associated with each (x,y,z) triplet.',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of string, the items are mapped in order to the',
            'this trace\'s (x,y,z) coordinates.'
        ].join(' ')
    }),
    mode: extendFlat({}, scatterAttrs.mode,  // shouldn't this be on-par with 2D?
        {dflt: 'lines+markers'}),
    surfaceaxis: {
        valType: 'enumerated',
        role: 'info',
        values: [-1, 0, 1, 2],
        dflt: -1,
        description: [
            'If *-1*, the scatter points are not fill with a surface',
            'If *0*, *1*, *2*, the scatter points are filled with',
            'a Delaunay surface about the x, y, z respectively.'
        ].join(' ')
    },
    surfacecolor: {
        valType: 'color',
        role: 'style',
        description: 'Sets the surface fill color.'
    },
    projection: {
        x: makeProjectionAttr('x'),
        y: makeProjectionAttr('y'),
        z: makeProjectionAttr('z')
    },
    connectgaps: scatterAttrs.connectgaps,
    line: extendFlat({}, {
        width: scatterLineAttrs.width,
        dash: scatterLineAttrs.dash,
        showscale: {
            valType: 'boolean',
            role: 'info',
            dflt: false,
            description: [
                'Has an effect only if `line.color` is set to a numerical array.',
                'Determines whether or not a colorbar is displayed.'
            ].join(' ')
        }
    },
        colorAttributes('line')
    ),
    marker: extendFlat({}, {  // Parity with scatter.js?
        symbol: {
            valType: 'enumerated',
            values: Object.keys(MARKER_SYMBOLS),
            role: 'style',
            dflt: 'circle',
            arrayOk: true,
            description: 'Sets the marker symbol type.'
        },
        size: extendFlat({}, scatterMarkerAttrs.size, {dflt: 8}),
        sizeref: scatterMarkerAttrs.sizeref,
        sizemin: scatterMarkerAttrs.sizemin,
        sizemode: scatterMarkerAttrs.sizemode,
        opacity: extendFlat({}, scatterMarkerAttrs.opacity, {
            arrayOk: false,
            description: [
                'Sets the marker opacity.',
                'Note that the marker opacity for scatter3d traces',
                'must be a scalar value for performance reasons.',
                'To set a blending opacity value',
                '(i.e. which is not transparent), set *marker.color*',
                'to an rgba color and use its alpha channel.'
            ].join(' ')
        }),
        showscale: scatterMarkerAttrs.showscale,
        colorbar: scatterMarkerAttrs.colorbar,

        line: extendFlat({},
            {width: extendFlat({}, scatterMarkerLineAttrs.width, {arrayOk: false})},
            colorAttributes('marker.line')
        )
    },
        colorAttributes('marker')
    ),

    textposition: extendFlat({}, scatterAttrs.textposition, {dflt: 'top center'}),
    textfont: scatterAttrs.textfont,

    error_x: errorBarAttrs,
    error_y: errorBarAttrs,
    error_z: errorBarAttrs,
};

},{"../../components/colorscale/color_attributes":517,"../../components/errorbars/attributes":535,"../../constants/gl_markers":592,"../../lib/extend":603,"../scatter/attributes":834}],858:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var arraysToCalcdata = require('../scatter/arrays_to_calcdata');
var calcColorscales = require('../scatter/colorscale_calc');


/**
 * This is a kludge to put the array attributes into
 * calcdata the way Scatter.plot does, so that legends and
 * popovers know what to do with them.
 */
module.exports = function calc(gd, trace) {
    var cd = [{x: false, y: false, trace: trace, t: {}}];

    arraysToCalcdata(cd, trace);
    calcColorscales(trace);

    return cd;
};

},{"../scatter/arrays_to_calcdata":833,"../scatter/colorscale_calc":838}],859:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var makeComputeError = require('../../components/errorbars/compute_error');


function calculateAxisErrors(data, params, scaleFactor) {
    if(!params || !params.visible) return null;

    var computeError = makeComputeError(params);
    var result = new Array(data.length);

    for(var i = 0; i < data.length; i++) {
        var errors = computeError(+data[i], i);

        result[i] = [
            -errors[0] * scaleFactor,
            errors[1] * scaleFactor
        ];
    }

    return result;
}

function dataLength(array) {
    for(var i = 0; i < array.length; i++) {
        if(array[i]) return array[i].length;
    }
    return 0;
}

function calculateErrors(data, scaleFactor) {
    var errors = [
        calculateAxisErrors(data.x, data.error_x, scaleFactor[0]),
        calculateAxisErrors(data.y, data.error_y, scaleFactor[1]),
        calculateAxisErrors(data.z, data.error_z, scaleFactor[2])
    ];

    var n = dataLength(errors);
    if(n === 0) return null;

    var errorBounds = new Array(n);

    for(var i = 0; i < n; i++) {
        var bound = [[0, 0, 0], [0, 0, 0]];

        for(var j = 0; j < 3; j++) {
            if(errors[j]) {
                for(var k = 0; k < 2; k++) {
                    bound[k][j] = errors[j][i][k];
                }
            }
        }

        errorBounds[i] = bound;
    }

    return errorBounds;
}

module.exports = calculateErrors;

},{"../../components/errorbars/compute_error":537}],860:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createLinePlot = require('gl-line3d');
var createScatterPlot = require('gl-scatter3d');
var createErrorBars = require('gl-error3d');
var createMesh = require('gl-mesh3d');
var triangulate = require('delaunay-triangulate');

var Lib = require('../../lib');
var str2RgbaArray = require('../../lib/str2rgbarray');
var formatColor = require('../../lib/gl_format_color');
var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');
var DASH_PATTERNS = require('../../constants/gl3d_dashes');
var MARKER_SYMBOLS = require('../../constants/gl_markers');

var calculateError = require('./calc_errors');

function LineWithMarkers(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.linePlot = null;
    this.scatterPlot = null;
    this.errorBars = null;
    this.textMarkers = null;
    this.delaunayMesh = null;
    this.color = null;
    this.mode = '';
    this.dataPoints = [];
    this.axesBounds = [
        [-Infinity, -Infinity, -Infinity],
        [Infinity, Infinity, Infinity]
    ];
    this.textLabels = null;
    this.data = null;
}

var proto = LineWithMarkers.prototype;

proto.handlePick = function(selection) {
    if(selection.object &&
        (selection.object === this.linePlot ||
         selection.object === this.delaunayMesh ||
         selection.object === this.textMarkers ||
         selection.object === this.scatterPlot)) {
        if(selection.object.highlight) {
            selection.object.highlight(null);
        }
        if(this.scatterPlot) {
            selection.object = this.scatterPlot;
            this.scatterPlot.highlight(selection.data);
        }
        if(this.textLabels && this.textLabels[selection.data.index] !== undefined) {
            selection.textLabel = this.textLabels[selection.data.index];
        }
        else selection.textLabel = '';

        var selectIndex = selection.data.index;
        selection.traceCoordinate = [
            this.data.x[selectIndex],
            this.data.y[selectIndex],
            this.data.z[selectIndex]
        ];

        return true;
    }
};

function constructDelaunay(points, color, axis) {
    var u = (axis + 1) % 3;
    var v = (axis + 2) % 3;
    var filteredPoints = [];
    var filteredIds = [];
    var i;

    for(i = 0; i < points.length; ++i) {
        var p = points[i];
        if(isNaN(p[u]) || !isFinite(p[u]) ||
           isNaN(p[v]) || !isFinite(p[v])) {
            continue;
        }
        filteredPoints.push([p[u], p[v]]);
        filteredIds.push(i);
    }
    var cells = triangulate(filteredPoints);
    for(i = 0; i < cells.length; ++i) {
        var c = cells[i];
        for(var j = 0; j < c.length; ++j) {
            c[j] = filteredIds[c[j]];
        }
    }
    return {
        positions: points,
        cells: cells,
        meshColor: color
    };
}

function calculateErrorParams(errors) {
    var capSize = [0.0, 0.0, 0.0],
        color = [[0, 0, 0], [0, 0, 0], [0, 0, 0]],
        lineWidth = [0.0, 0.0, 0.0];

    for(var i = 0; i < 3; i++) {
        var e = errors[i];

        if(e && e.copy_zstyle !== false) e = errors[2];
        if(!e) continue;

        capSize[i] = e.width / 2;  // ballpark rescaling
        color[i] = str2RgbaArray(e.color);
        lineWidth = e.thickness;

    }

    return {capSize: capSize, color: color, lineWidth: lineWidth};
}

function calculateTextOffset(tp) {
    // Read out text properties
    var textOffset = [0, 0];
    if(Array.isArray(tp)) return [0, -1];
    if(tp.indexOf('bottom') >= 0) textOffset[1] += 1;
    if(tp.indexOf('top') >= 0) textOffset[1] -= 1;
    if(tp.indexOf('left') >= 0) textOffset[0] -= 1;
    if(tp.indexOf('right') >= 0) textOffset[0] += 1;
    return textOffset;
}


function calculateSize(sizeIn, sizeFn) {
    // rough parity with Plotly 2D markers
    return sizeFn(sizeIn * 4);
}

function calculateSymbol(symbolIn) {
    return MARKER_SYMBOLS[symbolIn];
}

function formatParam(paramIn, len, calculate, dflt, extraFn) {
    var paramOut = null;

    if(Array.isArray(paramIn)) {
        paramOut = [];

        for(var i = 0; i < len; i++) {
            if(paramIn[i] === undefined) paramOut[i] = dflt;
            else paramOut[i] = calculate(paramIn[i], extraFn);
        }

    }
    else paramOut = calculate(paramIn, Lib.identity);

    return paramOut;
}


function convertPlotlyOptions(scene, data) {
    var params, i,
        points = [],
        sceneLayout = scene.fullSceneLayout,
        scaleFactor = scene.dataScale,
        xaxis = sceneLayout.xaxis,
        yaxis = sceneLayout.yaxis,
        zaxis = sceneLayout.zaxis,
        marker = data.marker,
        line = data.line,
        xc, x = data.x || [],
        yc, y = data.y || [],
        zc, z = data.z || [],
        len = x.length,
        xcalendar = data.xcalendar,
        ycalendar = data.ycalendar,
        zcalendar = data.zcalendar,
        text;

    // Convert points
    for(i = 0; i < len; i++) {
        // sanitize numbers and apply transforms based on axes.type
        xc = xaxis.d2l(x[i], 0, xcalendar) * scaleFactor[0];
        yc = yaxis.d2l(y[i], 0, ycalendar) * scaleFactor[1];
        zc = zaxis.d2l(z[i], 0, zcalendar) * scaleFactor[2];

        points[i] = [xc, yc, zc];
    }

    // convert text
    if(Array.isArray(data.text)) text = data.text;
    else if(data.text !== undefined) {
        text = new Array(len);
        for(i = 0; i < len; i++) text[i] = data.text;
    }

    // Build object parameters
    params = {
        position: points,
        mode: data.mode,
        text: text
    };

    if('line' in data) {
        params.lineColor = formatColor(line, 1, len);
        params.lineWidth = line.width;
        params.lineDashes = line.dash;
    }

    if('marker' in data) {
        var sizeFn = makeBubbleSizeFn(data);

        params.scatterColor = formatColor(marker, 1, len);
        params.scatterSize = formatParam(marker.size, len, calculateSize, 20, sizeFn);
        params.scatterMarker = formatParam(marker.symbol, len, calculateSymbol, '●');
        params.scatterLineWidth = marker.line.width;  // arrayOk === false
        params.scatterLineColor = formatColor(marker.line, 1, len);
        params.scatterAngle = 0;
    }

    if('textposition' in data) {
        params.textOffset = calculateTextOffset(data.textposition);  // arrayOk === false
        params.textColor = formatColor(data.textfont, 1, len);
        params.textSize = formatParam(data.textfont.size, len, Lib.identity, 12);
        params.textFont = data.textfont.family;  // arrayOk === false
        params.textAngle = 0;
    }

    var dims = ['x', 'y', 'z'];
    params.project = [false, false, false];
    params.projectScale = [1, 1, 1];
    params.projectOpacity = [1, 1, 1];
    for(i = 0; i < 3; ++i) {
        var projection = data.projection[dims[i]];
        if((params.project[i] = projection.show)) {
            params.projectOpacity[i] = projection.opacity;
            params.projectScale[i] = projection.scale;
        }
    }

    params.errorBounds = calculateError(data, scaleFactor);

    var errorParams = calculateErrorParams([data.error_x, data.error_y, data.error_z]);
    params.errorColor = errorParams.color;
    params.errorLineWidth = errorParams.lineWidth;
    params.errorCapSize = errorParams.capSize;

    params.delaunayAxis = data.surfaceaxis;
    params.delaunayColor = str2RgbaArray(data.surfacecolor);

    return params;
}

function arrayToColor(color) {
    if(Array.isArray(color)) {
        var c = color[0];

        if(Array.isArray(c)) color = c;

        return 'rgb(' + color.slice(0, 3).map(function(x) {
            return Math.round(x * 255);
        }) + ')';
    }

    return null;
}

proto.update = function(data) {
    var gl = this.scene.glplot.gl,
        lineOptions,
        scatterOptions,
        errorOptions,
        textOptions,
        dashPattern = DASH_PATTERNS.solid;

    // Save data
    this.data = data;

    // Run data conversion
    var options = convertPlotlyOptions(this.scene, data);

    if('mode' in options) {
        this.mode = options.mode;
    }
    if('lineDashes' in options) {
        if(options.lineDashes in DASH_PATTERNS) {
            dashPattern = DASH_PATTERNS[options.lineDashes];
        }
    }

    this.color = arrayToColor(options.scatterColor) ||
                 arrayToColor(options.lineColor);

    // Save data points
    this.dataPoints = options.position;

    lineOptions = {
        gl: gl,
        position: options.position,
        color: options.lineColor,
        lineWidth: options.lineWidth || 1,
        dashes: dashPattern[0],
        dashScale: dashPattern[1],
        opacity: data.opacity,
        connectGaps: data.connectgaps
    };

    if(this.mode.indexOf('lines') !== -1) {
        if(this.linePlot) this.linePlot.update(lineOptions);
        else {
            this.linePlot = createLinePlot(lineOptions);
            this.scene.glplot.add(this.linePlot);
        }
    } else if(this.linePlot) {
        this.scene.glplot.remove(this.linePlot);
        this.linePlot.dispose();
        this.linePlot = null;
    }

    // N.B. marker.opacity must be a scalar for performance
    var scatterOpacity = data.opacity;
    if(data.marker && data.marker.opacity) scatterOpacity *= data.marker.opacity;

    scatterOptions = {
        gl: gl,
        position: options.position,
        color: options.scatterColor,
        size: options.scatterSize,
        glyph: options.scatterMarker,
        opacity: scatterOpacity,
        orthographic: true,
        lineWidth: options.scatterLineWidth,
        lineColor: options.scatterLineColor,
        project: options.project,
        projectScale: options.projectScale,
        projectOpacity: options.projectOpacity
    };

    if(this.mode.indexOf('markers') !== -1) {
        if(this.scatterPlot) this.scatterPlot.update(scatterOptions);
        else {
            this.scatterPlot = createScatterPlot(scatterOptions);
            this.scatterPlot.highlightScale = 1;
            this.scene.glplot.add(this.scatterPlot);
        }
    } else if(this.scatterPlot) {
        this.scene.glplot.remove(this.scatterPlot);
        this.scatterPlot.dispose();
        this.scatterPlot = null;
    }

    textOptions = {
        gl: gl,
        position: options.position,
        glyph: options.text,
        color: options.textColor,
        size: options.textSize,
        angle: options.textAngle,
        alignment: options.textOffset,
        font: options.textFont,
        orthographic: true,
        lineWidth: 0,
        project: false,
        opacity: data.opacity
    };

    this.textLabels = options.text;

    if(this.mode.indexOf('text') !== -1) {
        if(this.textMarkers) this.textMarkers.update(textOptions);
        else {
            this.textMarkers = createScatterPlot(textOptions);
            this.textMarkers.highlightScale = 1;
            this.scene.glplot.add(this.textMarkers);
        }
    } else if(this.textMarkers) {
        this.scene.glplot.remove(this.textMarkers);
        this.textMarkers.dispose();
        this.textMarkers = null;
    }

    errorOptions = {
        gl: gl,
        position: options.position,
        color: options.errorColor,
        error: options.errorBounds,
        lineWidth: options.errorLineWidth,
        capSize: options.errorCapSize,
        opacity: data.opacity
    };
    if(this.errorBars) {
        if(options.errorBounds) {
            this.errorBars.update(errorOptions);
        } else {
            this.scene.glplot.remove(this.errorBars);
            this.errorBars.dispose();
            this.errorBars = null;
        }
    } else if(options.errorBounds) {
        this.errorBars = createErrorBars(errorOptions);
        this.scene.glplot.add(this.errorBars);
    }

    if(options.delaunayAxis >= 0) {
        var delaunayOptions = constructDelaunay(
            options.position,
            options.delaunayColor,
            options.delaunayAxis
        );
        delaunayOptions.opacity = data.opacity;

        if(this.delaunayMesh) {
            this.delaunayMesh.update(delaunayOptions);
        } else {
            delaunayOptions.gl = gl;
            this.delaunayMesh = createMesh(delaunayOptions);
            this.scene.glplot.add(this.delaunayMesh);
        }
    } else if(this.delaunayMesh) {
        this.scene.glplot.remove(this.delaunayMesh);
        this.delaunayMesh.dispose();
        this.delaunayMesh = null;
    }
};

proto.dispose = function() {
    if(this.linePlot) {
        this.scene.glplot.remove(this.linePlot);
        this.linePlot.dispose();
    }
    if(this.scatterPlot) {
        this.scene.glplot.remove(this.scatterPlot);
        this.scatterPlot.dispose();
    }
    if(this.errorBars) {
        this.scene.glplot.remove(this.errorBars);
        this.errorBars.dispose();
    }
    if(this.textMarkers) {
        this.scene.glplot.remove(this.textMarkers);
        this.textMarkers.dispose();
    }
    if(this.delaunayMesh) {
        this.scene.glplot.remove(this.delaunayMesh);
        this.delaunayMesh.dispose();
    }
};

function createLineWithMarkers(scene, data) {
    var plot = new LineWithMarkers(scene, data.uid);
    plot.update(data);
    return plot;
}

module.exports = createLineWithMarkers;

},{"../../constants/gl3d_dashes":591,"../../constants/gl_markers":592,"../../lib":610,"../../lib/gl_format_color":608,"../../lib/str2rgbarray":624,"../scatter/make_bubble_size_func":849,"./calc_errors":859,"delaunay-triangulate":88,"gl-error3d":137,"gl-line3d":147,"gl-mesh3d":180,"gl-scatter3d":223}],861:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');

var subTypes = require('../scatter/subtypes');
var handleMarkerDefaults = require('../scatter/marker_defaults');
var handleLineDefaults = require('../scatter/line_defaults');
var handleTextDefaults = require('../scatter/text_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');

var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {

    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYZDefaults(traceIn, traceOut, coerce, layout);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('mode');

    if(subTypes.hasLines(traceOut)) {
        coerce('connectgaps');
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasText(traceOut)) {
        handleTextDefaults(traceIn, traceOut, layout, coerce);
    }

    var lineColor = (traceOut.line || {}).color,
        markerColor = (traceOut.marker || {}).color;
    if(coerce('surfaceaxis') >= 0) coerce('surfacecolor', lineColor || markerColor);

    var dims = ['x', 'y', 'z'];
    for(var i = 0; i < 3; ++i) {
        var projection = 'projection.' + dims[i];
        if(coerce(projection + '.show')) {
            coerce(projection + '.opacity');
            coerce(projection + '.scale');
        }
    }

    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'z'});
    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'y', inherit: 'z'});
    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'z'});
};

function handleXYZDefaults(traceIn, traceOut, coerce, layout) {
    var len = 0,
        x = coerce('x'),
        y = coerce('y'),
        z = coerce('z');

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y', 'z'], layout);

    if(x && y && z) {
        len = Math.min(x.length, y.length, z.length);
        if(len < x.length) traceOut.x = x.slice(0, len);
        if(len < y.length) traceOut.y = y.slice(0, len);
        if(len < z.length) traceOut.z = z.slice(0, len);
    }

    return len;
}

},{"../../components/errorbars/defaults":538,"../../lib":610,"../../registry":717,"../scatter/line_defaults":845,"../scatter/marker_defaults":850,"../scatter/subtypes":854,"../scatter/text_defaults":855,"./attributes":857}],862:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Scatter3D = {};

Scatter3D.plot = require('./convert');
Scatter3D.attributes = require('./attributes');
Scatter3D.markerSymbols = require('../../constants/gl_markers');
Scatter3D.supplyDefaults = require('./defaults');
Scatter3D.colorbar = require('../scatter/colorbar');
Scatter3D.calc = require('./calc');

Scatter3D.moduleType = 'trace';
Scatter3D.name = 'scatter3d';
Scatter3D.basePlotModule = require('../../plots/gl3d');
Scatter3D.categories = ['gl3d', 'symbols', 'markerColorscale', 'showLegend'];
Scatter3D.meta = {
    hrName: 'scatter_3d',
    description: [
        'The data visualized as scatter point or lines in 3D dimension',
        'is set in `x`, `y`, `z`.',
        'Text (appearing either on the chart or on hover only) is via `text`.',
        'Bubble charts are achieved by setting `marker.size` and/or `marker.color`',
        'Projections are achieved via `projection`.',
        'Surface fills are achieved via `surfaceaxis`.'
    ].join(' ')
};

module.exports = Scatter3D;

},{"../../constants/gl_markers":592,"../../plots/gl3d":681,"../scatter/colorbar":837,"./attributes":857,"./calc":858,"./convert":860,"./defaults":861}],863:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var plotAttrs = require('../../plots/attributes');
var colorAttributes = require('../../components/colorscale/color_attributes');

var extendFlat = require('../../lib/extend').extendFlat;

var scatterMarkerAttrs = scatterAttrs.marker,
    scatterLineAttrs = scatterAttrs.line,
    scatterMarkerLineAttrs = scatterMarkerAttrs.line;

module.exports = {
    lon: {
        valType: 'data_array',
        description: 'Sets the longitude coordinates (in degrees East).'
    },
    lat: {
        valType: 'data_array',
        description: 'Sets the latitude coordinates (in degrees North).'
    },

    locations: {
        valType: 'data_array',
        description: [
            'Sets the coordinates via location IDs or names.',
            'Coordinates correspond to the centroid of each location given.',
            'See `locationmode` for more info.'
        ].join(' ')
    },
    locationmode: {
        valType: 'enumerated',
        values: ['ISO-3', 'USA-states', 'country names'],
        role: 'info',
        dflt: 'ISO-3',
        description: [
            'Determines the set of locations used to match entries in `locations`',
            'to regions on the map.'
        ].join(' ')
    },

    mode: extendFlat({}, scatterAttrs.mode, {dflt: 'markers'}),

    text: extendFlat({}, scatterAttrs.text, {
        description: [
            'Sets text elements associated with each (lon,lat) pair',
            'or item in `locations`.',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of string, the items are mapped in order to the',
            'this trace\'s (lon,lat) or `locations` coordinates.'
        ].join(' ')
    }),
    textfont: scatterAttrs.textfont,
    textposition: scatterAttrs.textposition,

    line: {
        color: scatterLineAttrs.color,
        width: scatterLineAttrs.width,
        dash: scatterLineAttrs.dash
    },
    connectgaps: scatterAttrs.connectgaps,

    marker: extendFlat({}, {
        symbol: scatterMarkerAttrs.symbol,
        opacity: scatterMarkerAttrs.opacity,
        size: scatterMarkerAttrs.size,
        sizeref: scatterMarkerAttrs.sizeref,
        sizemin: scatterMarkerAttrs.sizemin,
        sizemode: scatterMarkerAttrs.sizemode,
        showscale: scatterMarkerAttrs.showscale,
        colorbar: scatterMarkerAttrs.colorbar,
        line: extendFlat({},
            {width: scatterMarkerLineAttrs.width},
            colorAttributes('marker.line')
        )
    },
        colorAttributes('marker')
    ),

    fill: {
        valType: 'enumerated',
        values: ['none', 'toself'],
        dflt: 'none',
        role: 'style',
        description: [
            'Sets the area to fill with a solid color.',
            'Use with `fillcolor` if not *none*.',
            '*toself* connects the endpoints of the trace (or each segment',
            'of the trace if it has gaps) into a closed shape.'
        ].join(' ')
    },
    fillcolor: scatterAttrs.fillcolor,

    hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {
        flags: ['lon', 'lat', 'location', 'text', 'name']
    })
};

},{"../../components/colorscale/color_attributes":517,"../../lib/extend":603,"../../plots/attributes":640,"../scatter/attributes":834}],864:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var calcMarkerColorscale = require('../scatter/colorscale_calc');


module.exports = function calc(gd, trace) {
    var hasLocationData = Array.isArray(trace.locations),
        len = hasLocationData ? trace.locations.length : trace.lon.length;

    var calcTrace = [],
        cnt = 0;

    for(var i = 0; i < len; i++) {
        var calcPt = {},
            skip;

        if(hasLocationData) {
            var loc = trace.locations[i];

            calcPt.loc = loc;
            skip = (typeof loc !== 'string');
        }
        else {
            var lon = trace.lon[i],
                lat = trace.lat[i];

            calcPt.lonlat = [+lon, +lat];
            skip = (!isNumeric(lon) || !isNumeric(lat));
        }

        if(skip) {
            if(cnt > 0) calcTrace[cnt - 1].gapAfter = true;
            continue;
        }

        cnt++;

        calcTrace.push(calcPt);
    }

    calcMarkerColorscale(trace);

    return calcTrace;
};

},{"../scatter/colorscale_calc":838,"fast-isnumeric":97}],865:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var subTypes = require('../scatter/subtypes');
var handleMarkerDefaults = require('../scatter/marker_defaults');
var handleLineDefaults = require('../scatter/line_defaults');
var handleTextDefaults = require('../scatter/text_defaults');
var handleFillColorDefaults = require('../scatter/fillcolor_defaults');

var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleLonLatLocDefaults(traceIn, traceOut, coerce);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('mode');

    if(subTypes.hasLines(traceOut)) {
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
        coerce('connectgaps');
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasText(traceOut)) {
        handleTextDefaults(traceIn, traceOut, layout, coerce);
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
    }

    coerce('hoverinfo', (layout._dataLength === 1) ? 'lon+lat+location+text' : undefined);
};

function handleLonLatLocDefaults(traceIn, traceOut, coerce) {
    var len = 0,
        locations = coerce('locations');

    var lon, lat;

    if(locations) {
        coerce('locationmode');
        len = locations.length;
        return len;
    }

    lon = coerce('lon') || [];
    lat = coerce('lat') || [];
    len = Math.min(lon.length, lat.length);

    if(len < lon.length) traceOut.lon = lon.slice(0, len);
    if(len < lat.length) traceOut.lat = lat.slice(0, len);

    return len;
}

},{"../../lib":610,"../scatter/fillcolor_defaults":841,"../scatter/line_defaults":845,"../scatter/marker_defaults":850,"../scatter/subtypes":854,"../scatter/text_defaults":855,"./attributes":863}],866:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = function eventData(out, pt) {
    out.lon = pt.lon;
    out.lat = pt.lat;
    out.location = pt.lon ? pt.lon : null;

    return out;
};

},{}],867:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Fx = require('../../plots/cartesian/graph_interact');
var Axes = require('../../plots/cartesian/axes');

var getTraceColor = require('../scatter/get_trace_color');
var attributes = require('./attributes');


module.exports = function hoverPoints(pointData) {
    var cd = pointData.cd,
        trace = cd[0].trace,
        xa = pointData.xa,
        ya = pointData.ya,
        geo = pointData.subplot;

    if(cd[0].placeholder) return;

    function c2p(lonlat) {
        return geo.projection(lonlat);
    }

    function distFn(d) {
        var lonlat = d.lonlat;

        // this handles the not-found location feature case
        if(lonlat[0] === null || lonlat[1] === null) return Infinity;

        if(geo.isLonLatOverEdges(lonlat)) return Infinity;

        var pos = c2p(lonlat);

        var xPx = xa.c2p(),
            yPx = ya.c2p();

        var dx = Math.abs(xPx - pos[0]),
            dy = Math.abs(yPx - pos[1]),
            rad = Math.max(3, d.mrc || 0);

        // N.B. d.mrc is the calculated marker radius
        // which is only set for trace with 'markers' mode.

        return Math.max(Math.sqrt(dx * dx + dy * dy) - rad, 1 - 3 / rad);
    }

    Fx.getClosest(cd, distFn, pointData);

    // skip the rest (for this trace) if we didn't find a close point
    if(pointData.index === false) return;

    var di = cd[pointData.index],
        lonlat = di.lonlat,
        pos = c2p(lonlat),
        rad = di.mrc || 1;

    pointData.x0 = pos[0] - rad;
    pointData.x1 = pos[0] + rad;
    pointData.y0 = pos[1] - rad;
    pointData.y1 = pos[1] + rad;

    pointData.loc = di.loc;
    pointData.lat = lonlat[0];
    pointData.lon = lonlat[1];

    pointData.color = getTraceColor(trace, di);
    pointData.extraText = getExtraText(trace, di, geo.mockAxis);

    return [pointData];
};

function getExtraText(trace, pt, axis) {
    var hoverinfo = trace.hoverinfo;

    var parts = (hoverinfo === 'all') ?
        attributes.hoverinfo.flags :
        hoverinfo.split('+');

    var hasLocation = parts.indexOf('location') !== -1 && Array.isArray(trace.locations),
        hasLon = (parts.indexOf('lon') !== -1),
        hasLat = (parts.indexOf('lat') !== -1),
        hasText = (parts.indexOf('text') !== -1);

    var text = [];

    function format(val) {
        return Axes.tickText(axis, axis.c2l(val), 'hover').text + '\u00B0';
    }

    if(hasLocation) text.push(pt.loc);
    else if(hasLon && hasLat) {
        text.push('(' + format(pt.lonlat[0]) + ', ' + format(pt.lonlat[1]) + ')');
    }
    else if(hasLon) text.push('lon: ' + format(pt.lonlat[0]));
    else if(hasLat) text.push('lat: ' + format(pt.lonlat[1]));

    if(hasText) {
        var tx = pt.tx || trace.text;
        if(!Array.isArray(tx)) text.push(tx);
    }

    return text.join('<br>');
}

},{"../../plots/cartesian/axes":642,"../../plots/cartesian/graph_interact":649,"../scatter/get_trace_color":842,"./attributes":863}],868:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var ScatterGeo = {};

ScatterGeo.attributes = require('./attributes');
ScatterGeo.supplyDefaults = require('./defaults');
ScatterGeo.colorbar = require('../scatter/colorbar');
ScatterGeo.calc = require('./calc');
ScatterGeo.plot = require('./plot');
ScatterGeo.hoverPoints = require('./hover');
ScatterGeo.eventData = require('./event_data');

ScatterGeo.moduleType = 'trace';
ScatterGeo.name = 'scattergeo';
ScatterGeo.basePlotModule = require('../../plots/geo');
ScatterGeo.categories = ['geo', 'symbols', 'markerColorscale', 'showLegend'];
ScatterGeo.meta = {
    hrName: 'scatter_geo',
    description: [
        'The data visualized as scatter point or lines on a geographic map',
        'is provided either by longitude/latitude pairs in `lon` and `lat`',
        'respectively or by geographic location IDs or names in `locations`.'
    ].join(' ')
};

module.exports = ScatterGeo;

},{"../../plots/geo":666,"../scatter/colorbar":837,"./attributes":863,"./calc":864,"./defaults":865,"./event_data":866,"./hover":867,"./plot":869}],869:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var d3 = require('d3');

var Drawing = require('../../components/drawing');
var Color = require('../../components/color');

var Lib = require('../../lib');
var getTopojsonFeatures = require('../../lib/topojson_utils').getTopojsonFeatures;
var locationToFeature = require('../../lib/geo_location_utils').locationToFeature;
var geoJsonUtils = require('../../lib/geojson_utils');
var arrayToCalcItem = require('../../lib/array_to_calc_item');
var subTypes = require('../scatter/subtypes');


module.exports = function plot(geo, calcData) {

    function keyFunc(d) { return d[0].trace.uid; }

    var gScatterGeoTraces = geo.framework.select('.scattergeolayer')
        .selectAll('g.trace.scattergeo')
        .data(calcData, keyFunc);

    gScatterGeoTraces.enter().append('g')
        .attr('class', 'trace scattergeo');

    gScatterGeoTraces.exit().remove();

    // TODO find a way to order the inner nodes on update
    gScatterGeoTraces.selectAll('*').remove();

    gScatterGeoTraces.each(function(calcTrace) {
        var s = d3.select(this),
            trace = calcTrace[0].trace,
            convertToLonLatFn = makeConvertToLonLatFn(trace, geo.topojson);

        // skip over placeholder traces
        if(calcTrace[0].placeholder) s.remove();

        // just like calcTrace but w/o not-found location datum
        var _calcTrace = [];

        for(var i = 0; i < calcTrace.length; i++) {
            var _calcPt = convertToLonLatFn(calcTrace[i]);

            if(_calcPt) {
                arrayItemToCalcdata(trace, calcTrace[i], i);
                _calcTrace.push(_calcPt);
            }
        }

        if(subTypes.hasLines(trace) || trace.fill !== 'none') {
            var lineCoords = geoJsonUtils.calcTraceToLineCoords(_calcTrace);

            var lineData = (trace.fill !== 'none') ?
                geoJsonUtils.makePolygon(lineCoords, trace) :
                geoJsonUtils.makeLine(lineCoords, trace);

            s.selectAll('path.js-line')
                .data([lineData])
              .enter().append('path')
                .classed('js-line', true);
        }

        if(subTypes.hasMarkers(trace)) {
            s.selectAll('path.point').data(_calcTrace)
              .enter().append('path')
                .classed('point', true);
        }

        if(subTypes.hasText(trace)) {
            s.selectAll('g').data(_calcTrace)
              .enter().append('g')
              .append('text');
        }
    });

    // call style here within topojson request callback
    style(geo);
};

function makeConvertToLonLatFn(trace, topojson) {
    if(!Array.isArray(trace.locations)) return Lib.identity;

    var features = getTopojsonFeatures(trace, topojson),
        locationmode = trace.locationmode;

    return function(calcPt) {
        var feature = locationToFeature(locationmode, calcPt.loc, features);

        if(feature) {
            calcPt.lonlat = feature.properties.ct;
            return calcPt;
        }
        else {
            // mutate gd.calcdata so that hoverPoints knows to skip this datum
            calcPt.lonlat = [null, null];
            return false;
        }
    };
}

function arrayItemToCalcdata(trace, calcItem, i) {
    var marker = trace.marker;

    function merge(traceAttr, calcAttr) {
        arrayToCalcItem(traceAttr, calcItem, calcAttr, i);
    }

    merge(trace.text, 'tx');
    merge(trace.textposition, 'tp');
    if(trace.textfont) {
        merge(trace.textfont.size, 'ts');
        merge(trace.textfont.color, 'tc');
        merge(trace.textfont.family, 'tf');
    }

    if(marker && marker.line) {
        var markerLine = marker.line;
        merge(marker.opacity, 'mo');
        merge(marker.symbol, 'mx');
        merge(marker.color, 'mc');
        merge(marker.size, 'ms');
        merge(markerLine.color, 'mlc');
        merge(markerLine.width, 'mlw');
    }
}

function style(geo) {
    var selection = geo.framework.selectAll('g.trace.scattergeo');

    selection.style('opacity', function(calcTrace) {
        return calcTrace[0].trace.opacity;
    });

    selection.each(function(calcTrace) {
        var trace = calcTrace[0].trace,
            group = d3.select(this);

        group.selectAll('path.point')
            .call(Drawing.pointStyle, trace);
        group.selectAll('text')
            .call(Drawing.textPointStyle, trace);
    });

    // this part is incompatible with Drawing.lineGroupStyle
    selection.selectAll('path.js-line')
        .style('fill', 'none')
        .each(function(d) {
            var path = d3.select(this),
                trace = d.trace,
                line = trace.line || {};

            path.call(Color.stroke, line.color)
                .call(Drawing.dashLine, line.dash || '', line.width || 0);

            if(trace.fill !== 'none') {
                path.call(Color.fill, trace.fillcolor);
            }
        });
}

},{"../../components/color":510,"../../components/drawing":533,"../../lib":610,"../../lib/array_to_calc_item":598,"../../lib/geo_location_utils":606,"../../lib/geojson_utils":607,"../../lib/topojson_utils":626,"../scatter/subtypes":854,"d3":86}],870:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var colorAttributes = require('../../components/colorscale/color_attributes');

var DASHES = require('../../constants/gl2d_dashes');
var MARKERS = require('../../constants/gl_markers');
var extendFlat = require('../../lib/extend').extendFlat;
var extendDeep = require('../../lib/extend').extendDeep;

var scatterLineAttrs = scatterAttrs.line,
    scatterMarkerAttrs = scatterAttrs.marker,
    scatterMarkerLineAttrs = scatterMarkerAttrs.line;

module.exports = {
    x: scatterAttrs.x,
    x0: scatterAttrs.x0,
    dx: scatterAttrs.dx,
    y: scatterAttrs.y,
    y0: scatterAttrs.y0,
    dy: scatterAttrs.dy,

    text: extendFlat({}, scatterAttrs.text, {
        description: [
            'Sets text elements associated with each (x,y) pair to appear on hover.',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of string, the items are mapped in order to the',
            'this trace\'s (x,y) coordinates.'
        ].join(' ')
    }),
    mode: {
        valType: 'flaglist',
        flags: ['lines', 'markers'],
        extras: ['none'],
        role: 'info',
        description: [
            'Determines the drawing mode for this scatter trace.'
        ].join(' ')
    },
    line: {
        color: scatterLineAttrs.color,
        width: scatterLineAttrs.width,
        dash: {
            valType: 'enumerated',
            values: Object.keys(DASHES),
            dflt: 'solid',
            role: 'style',
            description: 'Sets the style of the lines.'
        }
    },
    marker: extendDeep({}, colorAttributes('marker'), {
        symbol: {
            valType: 'enumerated',
            values: Object.keys(MARKERS),
            dflt: 'circle',
            arrayOk: true,
            role: 'style',
            description: 'Sets the marker symbol type.'
        },
        size: scatterMarkerAttrs.size,
        sizeref: scatterMarkerAttrs.sizeref,
        sizemin: scatterMarkerAttrs.sizemin,
        sizemode: scatterMarkerAttrs.sizemode,
        opacity: scatterMarkerAttrs.opacity,
        showscale: scatterMarkerAttrs.showscale,
        colorbar: scatterMarkerAttrs.colorbar,
        line: extendDeep({}, colorAttributes('marker.line'), {
            width: scatterMarkerLineAttrs.width
        })
    }),
    connectgaps: scatterAttrs.connectgaps,
    fill: extendFlat({}, scatterAttrs.fill, {
        values: ['none', 'tozeroy', 'tozerox']
    }),
    fillcolor: scatterAttrs.fillcolor,

    error_y: scatterAttrs.error_y,
    error_x: scatterAttrs.error_x
};

},{"../../components/colorscale/color_attributes":517,"../../constants/gl2d_dashes":590,"../../constants/gl_markers":592,"../../lib/extend":603,"../scatter/attributes":834}],871:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createScatter = require('gl-scatter2d');
var createFancyScatter = require('gl-scatter2d-fancy');
var createLine = require('gl-line2d');
var createError = require('gl-error2d');
var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Axes = require('../../plots/cartesian/axes');
var autoType = require('../../plots/cartesian/axis_autotype');
var ErrorBars = require('../../components/errorbars');
var str2RGBArray = require('../../lib/str2rgbarray');
var truncate = require('../../lib/typed_array_truncate');
var formatColor = require('../../lib/gl_format_color');
var subTypes = require('../scatter/subtypes');
var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');
var getTraceColor = require('../scatter/get_trace_color');
var MARKER_SYMBOLS = require('../../constants/gl_markers');
var DASHES = require('../../constants/gl2d_dashes');

var AXES = ['xaxis', 'yaxis'];


function LineWithMarkers(scene, uid) {
    this.scene = scene;
    this.uid = uid;
    this.type = 'scattergl';

    this.pickXData = [];
    this.pickYData = [];
    this.xData = [];
    this.yData = [];
    this.textLabels = [];
    this.color = 'rgb(0, 0, 0)';
    this.name = '';
    this.hoverinfo = 'all';
    this.connectgaps = true;

    this.idToIndex = [];
    this.bounds = [0, 0, 0, 0];

    this.hasLines = false;
    this.lineOptions = {
        positions: new Float64Array(0),
        color: [0, 0, 0, 1],
        width: 1,
        fill: [false, false, false, false],
        fillColor: [
            [0, 0, 0, 1],
            [0, 0, 0, 1],
            [0, 0, 0, 1],
            [0, 0, 0, 1]],
        dashes: [1]
    };
    this.line = createLine(scene.glplot, this.lineOptions);
    this.line._trace = this;

    this.hasErrorX = false;
    this.errorXOptions = {
        positions: new Float64Array(0),
        errors: new Float64Array(0),
        lineWidth: 1,
        capSize: 0,
        color: [0, 0, 0, 1]
    };
    this.errorX = createError(scene.glplot, this.errorXOptions);
    this.errorX._trace = this;

    this.hasErrorY = false;
    this.errorYOptions = {
        positions: new Float64Array(0),
        errors: new Float64Array(0),
        lineWidth: 1,
        capSize: 0,
        color: [0, 0, 0, 1]
    };
    this.errorY = createError(scene.glplot, this.errorYOptions);
    this.errorY._trace = this;

    this.hasMarkers = false;
    this.scatterOptions = {
        positions: new Float64Array(0),
        sizes: [],
        colors: [],
        glyphs: [],
        borderWidths: [],
        borderColors: [],
        size: 12,
        color: [0, 0, 0, 1],
        borderSize: 1,
        borderColor: [0, 0, 0, 1]
    };
    this.scatter = createScatter(scene.glplot, this.scatterOptions);
    this.scatter._trace = this;
    this.fancyScatter = createFancyScatter(scene.glplot, this.scatterOptions);
    this.fancyScatter._trace = this;
}

var proto = LineWithMarkers.prototype;

proto.handlePick = function(pickResult) {
    var index = pickResult.pointId;

    if(pickResult.object !== this.line || this.connectgaps) {
        index = this.idToIndex[pickResult.pointId];
    }

    var x = this.pickXData[index];

    return {
        trace: this,
        dataCoord: pickResult.dataCoord,
        traceCoord: [
            isNumeric(x) || !Lib.isDateTime(x) ? x : Lib.dateTime2ms(x),
            this.pickYData[index]
        ],
        textLabel: Array.isArray(this.textLabels) ?
            this.textLabels[index] :
            this.textLabels,
        color: Array.isArray(this.color) ?
            this.color[index] :
            this.color,
        name: this.name,
        pointIndex: index,
        hoverinfo: this.hoverinfo
    };
};

// check if trace is fancy
proto.isFancy = function(options) {
    if(this.scene.xaxis.type !== 'linear' && this.scene.xaxis.type !== 'date') return true;
    if(this.scene.yaxis.type !== 'linear') return true;

    if(!options.x || !options.y) return true;

    if(this.hasMarkers) {
        var marker = options.marker || {};

        if(Array.isArray(marker.symbol) ||
             marker.symbol !== 'circle' ||
             Array.isArray(marker.size) ||
             Array.isArray(marker.color) ||
             Array.isArray(marker.line.width) ||
             Array.isArray(marker.line.color) ||
             Array.isArray(marker.opacity)
        ) return true;
    }

    if(this.hasLines && !this.connectgaps) return true;

    if(this.hasErrorX) return true;
    if(this.hasErrorY) return true;

    return false;
};

// handle the situation where values can be array-like or not array like
function convertArray(convert, data, count) {
    if(!Array.isArray(data)) data = [data];

    return _convertArray(convert, data, count);
}

function _convertArray(convert, data, count) {
    var result = new Array(count),
        data0 = data[0];

    for(var i = 0; i < count; ++i) {
        result[i] = (i >= data.length) ?
            convert(data0) :
            convert(data[i]);
    }

    return result;
}

var convertNumber = convertArray.bind(null, function(x) { return +x; });
var convertColorBase = convertArray.bind(null, str2RGBArray);
var convertSymbol = convertArray.bind(null, function(x) {
    return MARKER_SYMBOLS[x] || '●';
});

function convertColor(color, opacity, count) {
    return _convertColor(
        convertColorBase(color, count),
        convertNumber(opacity, count),
        count
    );
}

function convertColorScale(containerIn, markerOpacity, traceOpacity, count) {
    var colors = formatColor(containerIn, markerOpacity, count);

    colors = Array.isArray(colors[0]) ?
        colors :
        _convertArray(Lib.identity, [colors], count);

    return _convertColor(
        colors,
        convertNumber(traceOpacity, count),
        count
    );
}

function _convertColor(colors, opacities, count) {
    var result = new Array(4 * count);

    for(var i = 0; i < count; ++i) {
        for(var j = 0; j < 3; ++j) result[4 * i + j] = colors[i][j];

        result[4 * i + 3] = colors[i][3] * opacities[i];
    }

    return result;
}

/* Order is important here to get the correct laying:
 * - lines
 * - errorX
 * - errorY
 * - markers
 */
proto.update = function(options) {
    if(options.visible !== true) {
        this.hasLines = false;
        this.hasErrorX = false;
        this.hasErrorY = false;
        this.hasMarkers = false;
    }
    else {
        this.hasLines = subTypes.hasLines(options);
        this.hasErrorX = options.error_x.visible === true;
        this.hasErrorY = options.error_y.visible === true;
        this.hasMarkers = subTypes.hasMarkers(options);
    }

    this.textLabels = options.text;
    this.name = options.name;
    this.hoverinfo = options.hoverinfo;
    this.bounds = [Infinity, Infinity, -Infinity, -Infinity];
    this.connectgaps = !!options.connectgaps;

    if(this.isFancy(options)) {
        this.updateFancy(options);
    }
    else {
        this.updateFast(options);
    }

    // not quite on-par with 'scatter', but close enough for now
    // does not handle the colorscale case
    this.color = getTraceColor(options, {});
};

// We'd ideally know that all values are of fast types; sampling gives no certainty but faster
//     (for the future, typed arrays can guarantee it, and Date values can be done with
//      representing the epoch milliseconds in a typed array;
//      also, perhaps the Python / R interfaces take care of String->Date conversions
//      such that there's no need to check for string dates in plotly.js)
// Patterned from axis_defaults.js:moreDates
// Code DRYing is not done to preserve the most direct compilation possible for speed;
// also, there are quite a few differences
function allFastTypesLikely(a) {
    var len = a.length,
        inc = Math.max(1, (len - 1) / Math.min(Math.max(len, 1), 1000)),
        ai;

    for(var i = 0; i < len; i += inc) {
        ai = a[Math.floor(i)];
        if(!isNumeric(ai) && !(ai instanceof Date)) {
            return false;
        }
    }

    return true;
}

proto.updateFast = function(options) {
    var x = this.xData = this.pickXData = options.x;
    var y = this.yData = this.pickYData = options.y;

    var len = x.length,
        idToIndex = new Array(len),
        positions = new Float64Array(2 * len),
        bounds = this.bounds,
        pId = 0,
        ptr = 0;

    var xx, yy;

    var xcalendar = options.xcalendar;

    var fastType = allFastTypesLikely(x);
    var isDateTime = !fastType && autoType(x, xcalendar) === 'date';

    // TODO add 'very fast' mode that bypasses this loop
    // TODO bypass this on modebar +/- zoom
    if(fastType || isDateTime) {

        for(var i = 0; i < len; ++i) {
            xx = x[i];
            yy = y[i];

            if(isNumeric(yy)) {

                if(!fastType) {
                    xx = Lib.dateTime2ms(xx, xcalendar);
                }

                idToIndex[pId++] = i;

                positions[ptr++] = xx;
                positions[ptr++] = yy;

                bounds[0] = Math.min(bounds[0], xx);
                bounds[1] = Math.min(bounds[1], yy);
                bounds[2] = Math.max(bounds[2], xx);
                bounds[3] = Math.max(bounds[3], yy);
            }
        }
    }

    positions = truncate(positions, ptr);
    this.idToIndex = idToIndex;

    this.updateLines(options, positions);
    this.updateError('X', options);
    this.updateError('Y', options);

    var markerSize;

    if(this.hasMarkers) {
        this.scatterOptions.positions = positions;

        var markerColor = str2RGBArray(options.marker.color),
            borderColor = str2RGBArray(options.marker.line.color),
            opacity = (options.opacity) * (options.marker.opacity);

        markerColor[3] *= opacity;
        this.scatterOptions.color = markerColor;

        borderColor[3] *= opacity;
        this.scatterOptions.borderColor = borderColor;

        markerSize = options.marker.size;
        this.scatterOptions.size = markerSize;
        this.scatterOptions.borderSize = options.marker.line.width;

        this.scatter.update(this.scatterOptions);
    }
    else {
        this.scatterOptions.positions = new Float64Array(0);
        this.scatterOptions.glyphs = [];
        this.scatter.update(this.scatterOptions);
    }

    // turn off fancy scatter plot
    this.scatterOptions.positions = new Float64Array(0);
    this.scatterOptions.glyphs = [];
    this.fancyScatter.update(this.scatterOptions);

    // add item for autorange routine
    this.expandAxesFast(bounds, markerSize);
};

proto.updateFancy = function(options) {
    var scene = this.scene,
        xaxis = scene.xaxis,
        yaxis = scene.yaxis,
        bounds = this.bounds;

    // makeCalcdata runs d2c (data-to-coordinate) on every point
    var x = this.pickXData = xaxis.makeCalcdata(options, 'x').slice();
    var y = this.pickYData = yaxis.makeCalcdata(options, 'y').slice();

    this.xData = x.slice();
    this.yData = y.slice();

    // get error values
    var errorVals = ErrorBars.calcFromTrace(options, scene.fullLayout);

    var len = x.length,
        idToIndex = new Array(len),
        positions = new Float64Array(2 * len),
        errorsX = new Float64Array(4 * len),
        errorsY = new Float64Array(4 * len),
        pId = 0,
        ptr = 0,
        ptrX = 0,
        ptrY = 0;

    var getX = (xaxis.type === 'log') ? xaxis.d2l : function(x) { return x; };
    var getY = (yaxis.type === 'log') ? yaxis.d2l : function(y) { return y; };

    var i, j, xx, yy, ex0, ex1, ey0, ey1;

    for(i = 0; i < len; ++i) {
        this.xData[i] = xx = getX(x[i]);
        this.yData[i] = yy = getY(y[i]);

        if(isNaN(xx) || isNaN(yy)) continue;

        idToIndex[pId++] = i;

        positions[ptr++] = xx;
        positions[ptr++] = yy;

        ex0 = errorsX[ptrX++] = xx - errorVals[i].xs || 0;
        ex1 = errorsX[ptrX++] = errorVals[i].xh - xx || 0;
        errorsX[ptrX++] = 0;
        errorsX[ptrX++] = 0;

        errorsY[ptrY++] = 0;
        errorsY[ptrY++] = 0;
        ey0 = errorsY[ptrY++] = yy - errorVals[i].ys || 0;
        ey1 = errorsY[ptrY++] = errorVals[i].yh - yy || 0;

        bounds[0] = Math.min(bounds[0], xx - ex0);
        bounds[1] = Math.min(bounds[1], yy - ey0);
        bounds[2] = Math.max(bounds[2], xx + ex1);
        bounds[3] = Math.max(bounds[3], yy + ey1);
    }

    positions = truncate(positions, ptr);
    this.idToIndex = idToIndex;

    this.updateLines(options, positions);
    this.updateError('X', options, positions, errorsX);
    this.updateError('Y', options, positions, errorsY);

    var sizes;

    if(this.hasMarkers) {
        this.scatterOptions.positions = positions;

        // TODO rewrite convert function so that
        // we don't have to loop through the data another time

        this.scatterOptions.sizes = new Array(pId);
        this.scatterOptions.glyphs = new Array(pId);
        this.scatterOptions.borderWidths = new Array(pId);
        this.scatterOptions.colors = new Array(pId * 4);
        this.scatterOptions.borderColors = new Array(pId * 4);

        var markerSizeFunc = makeBubbleSizeFn(options),
            markerOpts = options.marker,
            markerOpacity = markerOpts.opacity,
            traceOpacity = options.opacity,
            colors = convertColorScale(markerOpts, markerOpacity, traceOpacity, len),
            glyphs = convertSymbol(markerOpts.symbol, len),
            borderWidths = convertNumber(markerOpts.line.width, len),
            borderColors = convertColorScale(markerOpts.line, markerOpacity, traceOpacity, len),
            index;

        sizes = convertArray(markerSizeFunc, markerOpts.size, len);

        for(i = 0; i < pId; ++i) {
            index = idToIndex[i];

            this.scatterOptions.sizes[i] = 4.0 * sizes[index];
            this.scatterOptions.glyphs[i] = glyphs[index];
            this.scatterOptions.borderWidths[i] = 0.5 * borderWidths[index];

            for(j = 0; j < 4; ++j) {
                this.scatterOptions.colors[4 * i + j] = colors[4 * index + j];
                this.scatterOptions.borderColors[4 * i + j] = borderColors[4 * index + j];
            }
        }

        this.fancyScatter.update(this.scatterOptions);
    }
    else {
        this.scatterOptions.positions = new Float64Array(0);
        this.scatterOptions.glyphs = [];
        this.fancyScatter.update(this.scatterOptions);
    }

    // turn off fast scatter plot
    this.scatterOptions.positions = new Float64Array(0);
    this.scatterOptions.glyphs = [];
    this.scatter.update(this.scatterOptions);

    // add item for autorange routine
    this.expandAxesFancy(x, y, sizes);
};

proto.updateLines = function(options, positions) {
    var i;

    if(this.hasLines) {
        var linePositions = positions;

        if(!options.connectgaps) {
            var p = 0;
            var x = this.xData;
            var y = this.yData;
            linePositions = new Float64Array(2 * x.length);

            for(i = 0; i < x.length; ++i) {
                linePositions[p++] = x[i];
                linePositions[p++] = y[i];
            }
        }

        this.lineOptions.positions = linePositions;

        var lineColor = convertColor(options.line.color, options.opacity, 1),
            lineWidth = Math.round(0.5 * this.lineOptions.width),
            dashes = (DASHES[options.line.dash] || [1]).slice();

        for(i = 0; i < dashes.length; ++i) dashes[i] *= lineWidth;

        switch(options.fill) {
            case 'tozeroy':
                this.lineOptions.fill = [false, true, false, false];
                break;
            case 'tozerox':
                this.lineOptions.fill = [true, false, false, false];
                break;
            default:
                this.lineOptions.fill = [false, false, false, false];
                break;
        }

        var fillColor = str2RGBArray(options.fillcolor);

        this.lineOptions.color = lineColor;
        this.lineOptions.width = 2.0 * options.line.width;
        this.lineOptions.dashes = dashes;
        this.lineOptions.fillColor = [fillColor, fillColor, fillColor, fillColor];
    }
    else {
        this.lineOptions.positions = new Float64Array(0);
    }

    this.line.update(this.lineOptions);
};

proto.updateError = function(axLetter, options, positions, errors) {
    var errorObj = this['error' + axLetter],
        errorOptions = options['error_' + axLetter.toLowerCase()],
        errorObjOptions = this['error' + axLetter + 'Options'];

    if(axLetter.toLowerCase() === 'x' && errorOptions.copy_ystyle) {
        errorOptions = options.error_y;
    }

    if(this['hasError' + axLetter]) {
        errorObjOptions.positions = positions;
        errorObjOptions.errors = errors;
        errorObjOptions.capSize = errorOptions.width;
        errorObjOptions.lineWidth = errorOptions.thickness / 2;  // ballpark rescaling
        errorObjOptions.color = convertColor(errorOptions.color, 1, 1);
    }
    else {
        errorObjOptions.positions = new Float64Array(0);
    }

    errorObj.update(errorObjOptions);
};

proto.expandAxesFast = function(bounds, markerSize) {
    var pad = markerSize || 10;
    var ax, min, max;

    for(var i = 0; i < 2; i++) {
        ax = this.scene[AXES[i]];

        min = ax._min;
        if(!min) min = [];
        min.push({ val: bounds[i], pad: pad });

        max = ax._max;
        if(!max) max = [];
        max.push({ val: bounds[i + 2], pad: pad });
    }
};

// not quite on-par with 'scatter' (scatter fill in several other expand options)
// but close enough for now
proto.expandAxesFancy = function(x, y, ppad) {
    var scene = this.scene,
        expandOpts = { padded: true, ppad: ppad };

    Axes.expand(scene.xaxis, x, expandOpts);
    Axes.expand(scene.yaxis, y, expandOpts);
};

proto.dispose = function() {
    this.line.dispose();
    this.errorX.dispose();
    this.errorY.dispose();
    this.scatter.dispose();
    this.fancyScatter.dispose();
};

function createLineWithMarkers(scene, data) {
    var plot = new LineWithMarkers(scene, data.uid);
    plot.update(data);
    return plot;
}

module.exports = createLineWithMarkers;

},{"../../components/errorbars":539,"../../constants/gl2d_dashes":590,"../../constants/gl_markers":592,"../../lib":610,"../../lib/gl_format_color":608,"../../lib/str2rgbarray":624,"../../lib/typed_array_truncate":627,"../../plots/cartesian/axes":642,"../../plots/cartesian/axis_autotype":643,"../scatter/get_trace_color":842,"../scatter/make_bubble_size_func":849,"../scatter/subtypes":854,"fast-isnumeric":97,"gl-error2d":135,"gl-line2d":145,"gl-scatter2d":220,"gl-scatter2d-fancy":215}],872:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var constants = require('../scatter/constants');
var subTypes = require('../scatter/subtypes');
var handleXYDefaults = require('../scatter/xy_defaults');
var handleMarkerDefaults = require('../scatter/marker_defaults');
var handleLineDefaults = require('../scatter/line_defaults');
var handleFillColorDefaults = require('../scatter/fillcolor_defaults');
var errorBarsSupplyDefaults = require('../../components/errorbars/defaults');

var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var len = handleXYDefaults(traceIn, traceOut, layout, coerce);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('mode', len < constants.PTS_LINESONLY ? 'lines+markers' : 'lines');

    if(subTypes.hasLines(traceOut)) {
        coerce('connectgaps');
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
    }

    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'y'});
    errorBarsSupplyDefaults(traceIn, traceOut, defaultColor, {axis: 'x', inherit: 'y'});
};

},{"../../components/errorbars/defaults":538,"../../lib":610,"../scatter/constants":839,"../scatter/fillcolor_defaults":841,"../scatter/line_defaults":845,"../scatter/marker_defaults":850,"../scatter/subtypes":854,"../scatter/xy_defaults":856,"./attributes":870}],873:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var ScatterGl = {};

ScatterGl.attributes = require('./attributes');
ScatterGl.supplyDefaults = require('./defaults');
ScatterGl.colorbar = require('../scatter/colorbar');

// reuse the Scatter3D 'dummy' calc step so that legends know what to do
ScatterGl.calc = require('../scatter3d/calc');
ScatterGl.plot = require('./convert');

ScatterGl.moduleType = 'trace';
ScatterGl.name = 'scattergl';
ScatterGl.basePlotModule = require('../../plots/gl2d');
ScatterGl.categories = ['gl2d', 'symbols', 'errorBarsOK', 'markerColorscale', 'showLegend'];
ScatterGl.meta = {
    description: [
        'The data visualized as scatter point or lines is set in `x` and `y`',
        'using the WebGl plotting engine.',
        'Bubble charts are achieved by setting `marker.size` and/or `marker.color`',
        'to a numerical arrays.'
    ].join(' ')
};

module.exports = ScatterGl;

},{"../../plots/gl2d":678,"../scatter/colorbar":837,"../scatter3d/calc":858,"./attributes":870,"./convert":871,"./defaults":872}],874:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterGeoAttrs = require('../scattergeo/attributes');
var scatterAttrs = require('../scatter/attributes');
var mapboxAttrs = require('../../plots/mapbox/layout_attributes');
var plotAttrs = require('../../plots/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

var lineAttrs = scatterGeoAttrs.line;
var markerAttrs = scatterGeoAttrs.marker;


module.exports = {
    lon: scatterGeoAttrs.lon,
    lat: scatterGeoAttrs.lat,

    // locations
    // locationmode

    mode: {
        valType: 'flaglist',
        flags: ['lines', 'markers', 'text'],
        dflt: 'markers',
        extras: ['none'],
        role: 'info',
        description: [
            'Determines the drawing mode for this scatter trace.',
            'If the provided `mode` includes *text* then the `text` elements',
            'appear at the coordinates. Otherwise, the `text` elements',
            'appear on hover.'
        ].join(' ')
    },

    text: extendFlat({}, scatterAttrs.text, {
        description: [
            'Sets text elements associated with each (lon,lat) pair',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of string, the items are mapped in order to the',
            'this trace\'s (lon,lat) coordinates.'
        ].join(' ')
    }),

    line: {
        color: lineAttrs.color,
        width: lineAttrs.width,

        // TODO
        dash: lineAttrs.dash
    },

    connectgaps: scatterAttrs.connectgaps,

    marker: {
        symbol: {
            valType: 'string',
            dflt: 'circle',
            role: 'style',
            arrayOk: true,
            description: [
                'Sets the marker symbol.',
                'Full list: https://www.mapbox.com/maki-icons/',
                'Note that the array `marker.color` and `marker.size`',
                'are only available for *circle* symbols.'
            ].join(' ')
        },
        opacity: extendFlat({}, markerAttrs.opacity, {
            arrayOk: false
        }),
        size: markerAttrs.size,
        sizeref: markerAttrs.sizeref,
        sizemin: markerAttrs.sizemin,
        sizemode: markerAttrs.sizemode,
        color: markerAttrs.color,
        colorscale: markerAttrs.colorscale,
        cauto: markerAttrs.cauto,
        cmax: markerAttrs.cmax,
        cmin: markerAttrs.cmin,
        autocolorscale: markerAttrs.autocolorscale,
        reversescale: markerAttrs.reversescale,
        showscale: markerAttrs.showscale,
        colorbar: colorbarAttrs

        // line
    },

    fill: scatterGeoAttrs.fill,
    fillcolor: scatterAttrs.fillcolor,

    textfont: mapboxAttrs.layers.symbol.textfont,
    textposition: mapboxAttrs.layers.symbol.textposition,

    hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {
        flags: ['lon', 'lat', 'text', 'name']
    }),
};

},{"../../components/colorbar/attributes":511,"../../lib/extend":603,"../../plots/attributes":640,"../../plots/mapbox/layout_attributes":698,"../scatter/attributes":834,"../scattergeo/attributes":863}],875:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Colorscale = require('../../components/colorscale');

var subtypes = require('../scatter/subtypes');
var calcMarkerColorscale = require('../scatter/colorscale_calc');
var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');


module.exports = function calc(gd, trace) {
    var len = trace.lon.length,
        marker = trace.marker;

    var hasMarkers = subtypes.hasMarkers(trace),
        hasColorArray = (hasMarkers && Array.isArray(marker.color)),
        hasSizeArray = (hasMarkers && Array.isArray(marker.size)),
        hasSymbolArray = (hasMarkers && Array.isArray(marker.symbol)),
        hasTextArray = Array.isArray(trace.text);

    calcMarkerColorscale(trace);

    var colorFn = Colorscale.hasColorscale(trace, 'marker') ?
            Colorscale.makeColorScaleFunc(
                Colorscale.extractScale(
                    marker.colorscale,
                    marker.cmin,
                    marker.cmax
                )
            ) :
            Lib.identity;

    var sizeFn = subtypes.isBubble(trace) ?
            makeBubbleSizeFn(trace) :
            Lib.identity;

    var calcTrace = [],
        cnt = 0;

    // Different than cartesian calc step
    // as skip over non-numeric lon, lat pairs.
    // This makes the hover and convert calculations simpler.

    for(var i = 0; i < len; i++) {
        var lon = trace.lon[i],
            lat = trace.lat[i];

        if(!isNumeric(lon) || !isNumeric(lat)) {
            if(cnt > 0) calcTrace[cnt - 1].gapAfter = true;
            continue;
        }

        var calcPt = {};
        cnt++;

        // coerce numeric strings into numbers
        calcPt.lonlat = [+lon, +lat];

        if(hasMarkers) {

            if(hasColorArray) {
                var mc = marker.color[i];

                calcPt.mc = mc;
                calcPt.mcc = colorFn(mc);
            }

            if(hasSizeArray) {
                var ms = marker.size[i];

                calcPt.ms = ms;
                calcPt.mrc = sizeFn(ms);
            }

            if(hasSymbolArray) {
                var mx = marker.symbol[i];
                calcPt.mx = (typeof mx === 'string') ? mx : 'circle';
            }
        }

        if(hasTextArray) {
            var tx = trace.text[i];
            calcPt.tx = (typeof tx === 'string') ? tx : '';
        }

        calcTrace.push(calcPt);
    }

    return calcTrace;
};

},{"../../components/colorscale":524,"../../lib":610,"../scatter/colorscale_calc":838,"../scatter/make_bubble_size_func":849,"../scatter/subtypes":854,"fast-isnumeric":97}],876:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');
var geoJsonUtils = require('../../lib/geojson_utils');

var subTypes = require('../scatter/subtypes');
var convertTextOpts = require('../../plots/mapbox/convert_text_opts');

var COLOR_PROP = 'circle-color';
var SIZE_PROP = 'circle-radius';


module.exports = function convert(calcTrace) {
    var trace = calcTrace[0].trace;

    var isVisible = (trace.visible === true),
        hasFill = (trace.fill !== 'none'),
        hasLines = subTypes.hasLines(trace),
        hasMarkers = subTypes.hasMarkers(trace),
        hasText = subTypes.hasText(trace),
        hasCircles = (hasMarkers && trace.marker.symbol === 'circle'),
        hasSymbols = (hasMarkers && trace.marker.symbol !== 'circle');

    var fill = initContainer(),
        line = initContainer(),
        circle = initContainer(),
        symbol = initContainer();

    var opts = {
        fill: fill,
        line: line,
        circle: circle,
        symbol: symbol
    };

    // early return if not visible or placeholder
    if(!isVisible || calcTrace[0].placeholder) return opts;

    // fill layer and line layer use the same coords
    var coords;
    if(hasFill || hasLines) {
        coords = geoJsonUtils.calcTraceToLineCoords(calcTrace);
    }

    if(hasFill) {
        fill.geojson = geoJsonUtils.makePolygon(coords);
        fill.layout.visibility = 'visible';

        Lib.extendFlat(fill.paint, {
            'fill-color': trace.fillcolor
        });
    }

    if(hasLines) {
        line.geojson = geoJsonUtils.makeLine(coords);
        line.layout.visibility = 'visible';

        Lib.extendFlat(line.paint, {
            'line-width': trace.line.width,
            'line-color': trace.line.color,
            'line-opacity': trace.opacity
        });

        // TODO convert line.dash into line-dasharray
    }

    if(hasCircles) {
        var hash = {};
        hash[COLOR_PROP] = {};
        hash[SIZE_PROP] = {};

        circle.geojson = makeCircleGeoJSON(calcTrace, hash);
        circle.layout.visibility = 'visible';

        Lib.extendFlat(circle.paint, {
            'circle-opacity': trace.opacity * trace.marker.opacity,
            'circle-color': calcCircleColor(trace, hash),
            'circle-radius': calcCircleRadius(trace, hash)
        });
    }

    if(hasSymbols || hasText) {
        symbol.geojson = makeSymbolGeoJSON(calcTrace);

        Lib.extendFlat(symbol.layout, {
            visibility: 'visible',
            'icon-image': '{symbol}-15',
            'text-field': '{text}'
        });

        if(hasSymbols) {
            Lib.extendFlat(symbol.layout, {
                'icon-size': trace.marker.size / 10
            });

            Lib.extendFlat(symbol.paint, {
                'icon-opacity': trace.opacity * trace.marker.opacity,

                // TODO does not work ??
                'icon-color': trace.marker.color
            });
        }

        if(hasText) {
            var iconSize = (trace.marker || {}).size,
                textOpts = convertTextOpts(trace.textposition, iconSize);

            Lib.extendFlat(symbol.layout, {
                'text-size': trace.textfont.size,
                'text-anchor': textOpts.anchor,
                'text-offset': textOpts.offset

                // TODO font family
                // 'text-font': symbol.textfont.family.split(', '),
            });

            Lib.extendFlat(symbol.paint, {
                'text-color': trace.textfont.color,
                'text-opacity': trace.opacity
            });
        }
    }

    return opts;
};

function initContainer() {
    return {
        geojson: geoJsonUtils.makeBlank(),
        layout: { visibility: 'none' },
        paint: {}
    };
}

// N.B. `hash` is mutated here
//
// The `hash` object contains mapping between values
// (e.g. calculated marker.size and marker.color items)
// and their index in the input arrayOk attributes.
//
// GeoJSON features have their 'data-driven' properties set to
// the index of the first value found in the data.
//
// The `hash` object is then converted to mapbox `stops` arrays
// mapping index to value.
//
// The solution prove to be more robust than trying to generate
// `stops` arrays from scale functions.
function makeCircleGeoJSON(calcTrace, hash) {
    var trace = calcTrace[0].trace;

    var marker = trace.marker,
        hasColorArray = Array.isArray(marker.color),
        hasSizeArray = Array.isArray(marker.size);

    // Translate vals in trace arrayOk containers
    // into a val-to-index hash object
    function translate(props, key, val, index) {
        if(hash[key][val] === undefined) hash[key][val] = index;

        props[key] = hash[key][val];
    }

    var features = [];

    for(var i = 0; i < calcTrace.length; i++) {
        var calcPt = calcTrace[i];

        var props = {};
        if(hasColorArray) translate(props, COLOR_PROP, calcPt.mcc, i);
        if(hasSizeArray) translate(props, SIZE_PROP, calcPt.mrc, i);

        features.push({
            type: 'Feature',
            geometry: {
                type: 'Point',
                coordinates: calcPt.lonlat
            },
            properties: props
        });
    }

    return {
        type: 'FeatureCollection',
        features: features
    };
}

function makeSymbolGeoJSON(calcTrace) {
    var trace = calcTrace[0].trace;

    var marker = trace.marker || {},
        symbol = marker.symbol,
        text = trace.text;

    var fillSymbol = (symbol !== 'circle') ?
            getFillFunc(symbol) :
            blankFillFunc;

    var fillText = subTypes.hasText(trace) ?
            getFillFunc(text) :
            blankFillFunc;

    var features = [];

    for(var i = 0; i < calcTrace.length; i++) {
        var calcPt = calcTrace[i];

        features.push({
            type: 'Feature',
            geometry: {
                type: 'Point',
                coordinates: calcPt.lonlat
            },
            properties: {
                symbol: fillSymbol(calcPt.mx),
                text: fillText(calcPt.tx)
            }
        });
    }

    return {
        type: 'FeatureCollection',
        features: features
    };
}

function calcCircleColor(trace, hash) {
    var marker = trace.marker,
        out;

    if(Array.isArray(marker.color)) {
        var vals = Object.keys(hash[COLOR_PROP]),
            stops = [];

        for(var i = 0; i < vals.length; i++) {
            var val = vals[i];

            stops.push([ hash[COLOR_PROP][val], val ]);
        }

        out = {
            property: COLOR_PROP,
            stops: stops
        };

    }
    else {
        out = marker.color;
    }

    return out;
}

function calcCircleRadius(trace, hash) {
    var marker = trace.marker,
        out;

    if(Array.isArray(marker.size)) {
        var vals = Object.keys(hash[SIZE_PROP]),
            stops = [];

        for(var i = 0; i < vals.length; i++) {
            var val = vals[i];

            stops.push([ hash[SIZE_PROP][val], +val ]);
        }

        // stops indices must be sorted
        stops.sort(function(a, b) {
            return a[0] - b[0];
        });

        out = {
            property: SIZE_PROP,
            stops: stops
        };
    }
    else {
        out = marker.size / 2;
    }

    return out;
}

function getFillFunc(attr) {
    if(Array.isArray(attr)) {
        return function(v) { return v; };
    }
    else if(attr) {
        return function() { return attr; };
    }
    else {
        return blankFillFunc;
    }
}

function blankFillFunc() { return ''; }

},{"../../lib":610,"../../lib/geojson_utils":607,"../../plots/mapbox/convert_text_opts":695,"../scatter/subtypes":854}],877:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var subTypes = require('../scatter/subtypes');
var handleMarkerDefaults = require('../scatter/marker_defaults');
var handleLineDefaults = require('../scatter/line_defaults');
var handleTextDefaults = require('../scatter/text_defaults');
var handleFillColorDefaults = require('../scatter/fillcolor_defaults');

var attributes = require('./attributes');
var scatterAttrs = require('../scatter/attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    function coerceMarker(attr, dflt) {
        var attrs = (attr.indexOf('.line') === -1) ? attributes : scatterAttrs;

        // use 'scatter' attributes for 'marker.line.' attr,
        // so that we can reuse the scatter marker defaults

        return Lib.coerce(traceIn, traceOut, attrs, attr, dflt);
    }

    var len = handleLonLatDefaults(traceIn, traceOut, coerce);
    if(!len) {
        traceOut.visible = false;
        return;
    }

    coerce('text');
    coerce('mode');

    if(subTypes.hasLines(traceOut)) {
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
        coerce('connectgaps');
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerceMarker);

        // array marker.size and marker.color are only supported with circles

        var marker = traceOut.marker;

        if(marker.symbol !== 'circle') {
            if(Array.isArray(marker.size)) marker.size = marker.size[0];
            if(Array.isArray(marker.color)) marker.color = marker.color[0];
        }
    }

    if(subTypes.hasText(traceOut)) {
        handleTextDefaults(traceIn, traceOut, layout, coerce);
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
    }

    coerce('hoverinfo', (layout._dataLength === 1) ? 'lon+lat+text' : undefined);
};

function handleLonLatDefaults(traceIn, traceOut, coerce) {
    var lon = coerce('lon') || [];
    var lat = coerce('lat') || [];
    var len = Math.min(lon.length, lat.length);

    if(len < lon.length) traceOut.lon = lon.slice(0, len);
    if(len < lat.length) traceOut.lat = lat.slice(0, len);

    return len;
}

},{"../../lib":610,"../scatter/attributes":834,"../scatter/fillcolor_defaults":841,"../scatter/line_defaults":845,"../scatter/marker_defaults":850,"../scatter/subtypes":854,"../scatter/text_defaults":855,"./attributes":874}],878:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';


module.exports = function eventData(out, pt) {
    out.lon = pt.lon;
    out.lat = pt.lat;

    return out;
};

},{}],879:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Fx = require('../../plots/cartesian/graph_interact');
var getTraceColor = require('../scatter/get_trace_color');


module.exports = function hoverPoints(pointData, xval, yval) {
    var cd = pointData.cd,
        trace = cd[0].trace,
        xa = pointData.xa,
        ya = pointData.ya;

    if(cd[0].placeholder) return;

    // compute winding number about [-180, 180] globe
    var winding = (xval >= 0) ?
            Math.floor((xval + 180) / 360) :
            Math.ceil((xval - 180) / 360);

    // shift longitude to [-180, 180] to determine closest point
    var lonShift = winding * 360;
    var xval2 = xval - lonShift;

    function distFn(d) {
        var lonlat = d.lonlat,
            dx = Math.abs(xa.c2p(lonlat) - xa.c2p([xval2, lonlat[1]])),
            dy = Math.abs(ya.c2p(lonlat) - ya.c2p([lonlat[0], yval])),
            rad = Math.max(3, d.mrc || 0);

        return Math.max(Math.sqrt(dx * dx + dy * dy) - rad, 1 - 3 / rad);
    }

    Fx.getClosest(cd, distFn, pointData);

    // skip the rest (for this trace) if we didn't find a close point
    if(pointData.index === false) return;

    var di = cd[pointData.index],
        lonlat = di.lonlat,
        lonlatShifted = [lonlat[0] + lonShift, lonlat[1]];

    // shift labels back to original winded globe
    var xc = xa.c2p(lonlatShifted),
        yc = ya.c2p(lonlatShifted),
        rad = di.mrc || 1;

    pointData.x0 = xc - rad;
    pointData.x1 = xc + rad;
    pointData.y0 = yc - rad;
    pointData.y1 = yc + rad;

    pointData.color = getTraceColor(trace, di);
    pointData.extraText = getExtraText(trace, di);

    return [pointData];
};

function getExtraText(trace, di) {
    var hoverinfo = trace.hoverinfo.split('+'),
        isAll = (hoverinfo.indexOf('all') !== -1),
        hasLon = (hoverinfo.indexOf('lon') !== -1),
        hasLat = (hoverinfo.indexOf('lat') !== -1);

    var lonlat = di.lonlat,
        text = [];

    // TODO should we use a mock axis to format hover?
    // If so, we'll need to make precision be zoom-level dependent
    function format(v) {
        return v + '\u00B0';
    }

    if(isAll || (hasLon && hasLat)) {
        text.push('(' + format(lonlat[0]) + ', ' + format(lonlat[1]) + ')');
    }
    else if(hasLon) text.push('lon: ' + format(lonlat[0]));
    else if(hasLat) text.push('lat: ' + format(lonlat[1]));

    if(isAll || hoverinfo.indexOf('text') !== -1) {
        var tx = di.tx || trace.text;
        if(!Array.isArray(tx)) text.push(tx);
    }

    return text.join('<br>');
}

},{"../../plots/cartesian/graph_interact":649,"../scatter/get_trace_color":842}],880:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';


var ScatterMapbox = {};

ScatterMapbox.attributes = require('./attributes');
ScatterMapbox.supplyDefaults = require('./defaults');
ScatterMapbox.colorbar = require('../scatter/colorbar');
ScatterMapbox.calc = require('./calc');
ScatterMapbox.hoverPoints = require('./hover');
ScatterMapbox.eventData = require('./event_data');
ScatterMapbox.plot = require('./plot');

ScatterMapbox.moduleType = 'trace';
ScatterMapbox.name = 'scattermapbox';
ScatterMapbox.basePlotModule = require('../../plots/mapbox');
ScatterMapbox.categories = ['mapbox', 'gl', 'symbols', 'markerColorscale', 'showLegend'];
ScatterMapbox.meta = {
    hrName: 'scatter_mapbox',
    description: [
        'The data visualized as scatter point, lines or marker symbols',
        'on a Mapbox GL geographic map',
        'is provided by longitude/latitude pairs in `lon` and `lat`.'
    ].join(' ')
};

module.exports = ScatterMapbox;

},{"../../plots/mapbox":696,"../scatter/colorbar":837,"./attributes":874,"./calc":875,"./defaults":877,"./event_data":878,"./hover":879,"./plot":881}],881:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var convert = require('./convert');


function ScatterMapbox(mapbox, uid) {
    this.mapbox = mapbox;
    this.map = mapbox.map;

    this.uid = uid;

    this.idSourceFill = uid + '-source-fill';
    this.idSourceLine = uid + '-source-line';
    this.idSourceCircle = uid + '-source-circle';
    this.idSourceSymbol = uid + '-source-symbol';

    this.idLayerFill = uid + '-layer-fill';
    this.idLayerLine = uid + '-layer-line';
    this.idLayerCircle = uid + '-layer-circle';
    this.idLayerSymbol = uid + '-layer-symbol';

    this.mapbox.initSource(this.idSourceFill);
    this.mapbox.initSource(this.idSourceLine);
    this.mapbox.initSource(this.idSourceCircle);
    this.mapbox.initSource(this.idSourceSymbol);

    this.map.addLayer({
        id: this.idLayerFill,
        source: this.idSourceFill,
        type: 'fill'
    });

    this.map.addLayer({
        id: this.idLayerLine,
        source: this.idSourceLine,
        type: 'line'
    });

    this.map.addLayer({
        id: this.idLayerCircle,
        source: this.idSourceCircle,
        type: 'circle'
    });

    this.map.addLayer({
        id: this.idLayerSymbol,
        source: this.idSourceSymbol,
        type: 'symbol'
    });

    // We could merge the 'fill' source with the 'line' source and
    // the 'circle' source with the 'symbol' source if ever having
    // for up-to 4 sources per 'scattermapbox' traces becomes a problem.
}

var proto = ScatterMapbox.prototype;

proto.update = function update(calcTrace) {
    var mapbox = this.mapbox;
    var opts = convert(calcTrace);

    mapbox.setOptions(this.idLayerFill, 'setLayoutProperty', opts.fill.layout);
    mapbox.setOptions(this.idLayerLine, 'setLayoutProperty', opts.line.layout);
    mapbox.setOptions(this.idLayerCircle, 'setLayoutProperty', opts.circle.layout);
    mapbox.setOptions(this.idLayerSymbol, 'setLayoutProperty', opts.symbol.layout);

    if(isVisible(opts.fill)) {
        mapbox.setSourceData(this.idSourceFill, opts.fill.geojson);
        mapbox.setOptions(this.idLayerFill, 'setPaintProperty', opts.fill.paint);
    }

    if(isVisible(opts.line)) {
        mapbox.setSourceData(this.idSourceLine, opts.line.geojson);
        mapbox.setOptions(this.idLayerLine, 'setPaintProperty', opts.line.paint);
    }

    if(isVisible(opts.circle)) {
        mapbox.setSourceData(this.idSourceCircle, opts.circle.geojson);
        mapbox.setOptions(this.idLayerCircle, 'setPaintProperty', opts.circle.paint);
    }

    if(isVisible(opts.symbol)) {
        mapbox.setSourceData(this.idSourceSymbol, opts.symbol.geojson);
        mapbox.setOptions(this.idLayerSymbol, 'setPaintProperty', opts.symbol.paint);
    }
};

proto.dispose = function dispose() {
    var map = this.map;

    map.removeLayer(this.idLayerFill);
    map.removeLayer(this.idLayerLine);
    map.removeLayer(this.idLayerCircle);
    map.removeLayer(this.idLayerSymbol);

    map.removeSource(this.idSourceFill);
    map.removeSource(this.idSourceLine);
    map.removeSource(this.idSourceCircle);
    map.removeSource(this.idSourceSymbol);
};

function isVisible(layerOpts) {
    return layerOpts.layout.visibility === 'visible';
}

module.exports = function createScatterMapbox(mapbox, calcTrace) {
    var trace = calcTrace[0].trace;

    var scatterMapbox = new ScatterMapbox(mapbox, trace.uid);
    scatterMapbox.update(calcTrace);

    return scatterMapbox;
};

},{"./convert":876}],882:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var scatterAttrs = require('../scatter/attributes');
var plotAttrs = require('../../plots/attributes');
var colorAttributes = require('../../components/colorscale/color_attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

var scatterMarkerAttrs = scatterAttrs.marker,
    scatterLineAttrs = scatterAttrs.line,
    scatterMarkerLineAttrs = scatterMarkerAttrs.line;

module.exports = {
    a: {
        valType: 'data_array',
        description: [
            'Sets the quantity of component `a` in each data point.',
            'If `a`, `b`, and `c` are all provided, they need not be',
            'normalized, only the relative values matter. If only two',
            'arrays are provided they must be normalized to match',
            '`ternary<i>.sum`.'
        ].join(' ')
    },
    b: {
        valType: 'data_array',
        description: [
            'Sets the quantity of component `a` in each data point.',
            'If `a`, `b`, and `c` are all provided, they need not be',
            'normalized, only the relative values matter. If only two',
            'arrays are provided they must be normalized to match',
            '`ternary<i>.sum`.'
        ].join(' ')
    },
    c: {
        valType: 'data_array',
        description: [
            'Sets the quantity of component `a` in each data point.',
            'If `a`, `b`, and `c` are all provided, they need not be',
            'normalized, only the relative values matter. If only two',
            'arrays are provided they must be normalized to match',
            '`ternary<i>.sum`.'
        ].join(' ')
    },
    sum: {
        valType: 'number',
        role: 'info',
        dflt: 0,
        min: 0,
        description: [
            'The number each triplet should sum to,',
            'if only two of `a`, `b`, and `c` are provided.',
            'This overrides `ternary<i>.sum` to normalize this specific',
            'trace, but does not affect the values displayed on the axes.',
            '0 (or missing) means to use ternary<i>.sum'
        ].join(' ')
    },
    mode: extendFlat({}, scatterAttrs.mode, {dflt: 'markers'}),
    text: extendFlat({}, scatterAttrs.text, {
        description: [
            'Sets text elements associated with each (a,b,c) point.',
            'If a single string, the same string appears over',
            'all the data points.',
            'If an array of strings, the items are mapped in order to the',
            'the data points in (a,b,c).'
        ].join(' ')
    }),
    line: {
        color: scatterLineAttrs.color,
        width: scatterLineAttrs.width,
        dash: scatterLineAttrs.dash,
        shape: extendFlat({}, scatterLineAttrs.shape,
            {values: ['linear', 'spline']}),
        smoothing: scatterLineAttrs.smoothing
    },
    connectgaps: scatterAttrs.connectgaps,
    fill: extendFlat({}, scatterAttrs.fill, {
        values: ['none', 'toself', 'tonext'],
        description: [
            'Sets the area to fill with a solid color.',
            'Use with `fillcolor` if not *none*.',
            'scatterternary has a subset of the options available to scatter.',
            '*toself* connects the endpoints of the trace (or each segment',
            'of the trace if it has gaps) into a closed shape.',
            '*tonext* fills the space between two traces if one completely',
            'encloses the other (eg consecutive contour lines), and behaves like',
            '*toself* if there is no trace before it. *tonext* should not be',
            'used if one trace does not enclose the other.'
        ].join(' ')
    }),
    fillcolor: scatterAttrs.fillcolor,
    marker: extendFlat({}, {
        symbol: scatterMarkerAttrs.symbol,
        opacity: scatterMarkerAttrs.opacity,
        maxdisplayed: scatterMarkerAttrs.maxdisplayed,
        size: scatterMarkerAttrs.size,
        sizeref: scatterMarkerAttrs.sizeref,
        sizemin: scatterMarkerAttrs.sizemin,
        sizemode: scatterMarkerAttrs.sizemode,
        line: extendFlat({},
            {width: scatterMarkerLineAttrs.width},
            colorAttributes('marker'.line)
        )
    }, colorAttributes('marker'), {
        showscale: scatterMarkerAttrs.showscale,
        colorbar: colorbarAttrs
    }),

    textfont: scatterAttrs.textfont,
    textposition: scatterAttrs.textposition,
    hoverinfo: extendFlat({}, plotAttrs.hoverinfo, {
        flags: ['a', 'b', 'c', 'text', 'name']
    }),
    hoveron: scatterAttrs.hoveron,
};

},{"../../components/colorbar/attributes":511,"../../components/colorscale/color_attributes":517,"../../lib/extend":603,"../../plots/attributes":640,"../scatter/attributes":834}],883:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Axes = require('../../plots/cartesian/axes');

var subTypes = require('../scatter/subtypes');
var calcColorscale = require('../scatter/colorscale_calc');
var arraysToCalcdata = require('../scatter/arrays_to_calcdata');

var dataArrays = ['a', 'b', 'c'];
var arraysToFill = {a: ['b', 'c'], b: ['a', 'c'], c: ['a', 'b']};


module.exports = function calc(gd, trace) {
    var ternary = gd._fullLayout[trace.subplot],
        displaySum = ternary.sum,
        normSum = trace.sum || displaySum;

    var i, j, dataArray, newArray, fillArray1, fillArray2;

    // fill in one missing component
    for(i = 0; i < dataArrays.length; i++) {
        dataArray = dataArrays[i];
        if(trace[dataArray]) continue;

        fillArray1 = trace[arraysToFill[dataArray][0]];
        fillArray2 = trace[arraysToFill[dataArray][1]];
        newArray = new Array(fillArray1.length);
        for(j = 0; j < fillArray1.length; j++) {
            newArray[j] = normSum - fillArray1[j] - fillArray2[j];
        }
        trace[dataArray] = newArray;
    }

    // make the calcdata array
    var serieslen = trace.a.length;
    var cd = new Array(serieslen);
    var a, b, c, norm, x, y;
    for(i = 0; i < serieslen; i++) {
        a = trace.a[i];
        b = trace.b[i];
        c = trace.c[i];
        if(isNumeric(a) && isNumeric(b) && isNumeric(c)) {
            a = +a;
            b = +b;
            c = +c;
            norm = displaySum / (a + b + c);
            if(norm !== 1) {
                a *= norm;
                b *= norm;
                c *= norm;
            }
            // map a, b, c onto x and y where the full scale of y
            // is [0, sum], and x is [-sum, sum]
            // TODO: this makes `a` always the top, `b` the bottom left,
            // and `c` the bottom right. Do we want options to rearrange
            // these?
            y = a;
            x = c - b;
            cd[i] = {x: x, y: y, a: a, b: b, c: c};
        }
        else cd[i] = {x: false, y: false};
    }

    // fill in some extras
    var marker, s;
    if(subTypes.hasMarkers(trace)) {
        // Treat size like x or y arrays --- Run d2c
        // this needs to go before ppad computation
        marker = trace.marker;
        s = marker.size;

        if(Array.isArray(s)) {
            var ax = {type: 'linear'};
            Axes.setConvert(ax);
            s = ax.makeCalcdata(trace.marker, 'size');
            if(s.length > serieslen) s.splice(serieslen, s.length - serieslen);
        }
    }

    calcColorscale(trace);
    arraysToCalcdata(cd, trace);

    return cd;
};

},{"../../plots/cartesian/axes":642,"../scatter/arrays_to_calcdata":833,"../scatter/colorscale_calc":838,"../scatter/subtypes":854,"fast-isnumeric":97}],884:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Lib = require('../../lib');

var constants = require('../scatter/constants');
var subTypes = require('../scatter/subtypes');
var handleMarkerDefaults = require('../scatter/marker_defaults');
var handleLineDefaults = require('../scatter/line_defaults');
var handleLineShapeDefaults = require('../scatter/line_shape_defaults');
var handleTextDefaults = require('../scatter/text_defaults');
var handleFillColorDefaults = require('../scatter/fillcolor_defaults');

var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var a = coerce('a'),
        b = coerce('b'),
        c = coerce('c'),
        len;

    // allow any one array to be missing, len is the minimum length of those
    // present. Note that after coerce data_array's are either Arrays (which
    // are truthy even if empty) or undefined. As in scatter, an empty array
    // is different from undefined, because it can signify that this data is
    // not known yet but expected in the future
    if(a) {
        len = a.length;
        if(b) {
            len = Math.min(len, b.length);
            if(c) len = Math.min(len, c.length);
        }
        else if(c) len = Math.min(len, c.length);
        else len = 0;
    }
    else if(b && c) {
        len = Math.min(b.length, c.length);
    }

    if(!len) {
        traceOut.visible = false;
        return;
    }

    // cut all data arrays down to same length
    if(a && len < a.length) traceOut.a = a.slice(0, len);
    if(b && len < b.length) traceOut.b = b.slice(0, len);
    if(c && len < c.length) traceOut.c = c.slice(0, len);

    coerce('sum');

    coerce('text');

    var defaultMode = len < constants.PTS_LINESONLY ? 'lines+markers' : 'lines';
    coerce('mode', defaultMode);

    if(subTypes.hasLines(traceOut)) {
        handleLineDefaults(traceIn, traceOut, defaultColor, layout, coerce);
        handleLineShapeDefaults(traceIn, traceOut, coerce);
        coerce('connectgaps');
    }

    if(subTypes.hasMarkers(traceOut)) {
        handleMarkerDefaults(traceIn, traceOut, defaultColor, layout, coerce);
    }

    if(subTypes.hasText(traceOut)) {
        handleTextDefaults(traceIn, traceOut, layout, coerce);
    }

    var dfltHoverOn = [];

    if(subTypes.hasMarkers(traceOut) || subTypes.hasText(traceOut)) {
        coerce('marker.maxdisplayed');
        dfltHoverOn.push('points');
    }

    coerce('fill');
    if(traceOut.fill !== 'none') {
        handleFillColorDefaults(traceIn, traceOut, defaultColor, coerce);
        if(!subTypes.hasLines(traceOut)) handleLineShapeDefaults(traceIn, traceOut, coerce);
    }

    coerce('hoverinfo', (layout._dataLength === 1) ? 'a+b+c+text' : undefined);

    if(traceOut.fill === 'tonext' || traceOut.fill === 'toself') {
        dfltHoverOn.push('fills');
    }
    coerce('hoveron', dfltHoverOn.join('+') || 'points');
};

},{"../../lib":610,"../scatter/constants":839,"../scatter/fillcolor_defaults":841,"../scatter/line_defaults":845,"../scatter/line_shape_defaults":847,"../scatter/marker_defaults":850,"../scatter/subtypes":854,"../scatter/text_defaults":855,"./attributes":882}],885:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scatterHover = require('../scatter/hover');
var Axes = require('../../plots/cartesian/axes');


module.exports = function hoverPoints(pointData, xval, yval, hovermode) {
    var scatterPointData = scatterHover(pointData, xval, yval, hovermode);
    if(!scatterPointData || scatterPointData[0].index === false) return;

    var newPointData = scatterPointData[0];

    // if hovering on a fill, we don't show any point data so the label is
    // unchanged from what scatter gives us - except that it needs to
    // be constrained to the trianglular plot area, not just the rectangular
    // area defined by the synthetic x and y axes
    // TODO: in some cases the vertical middle of the shape is not within
    // the triangular viewport at all, so the label can become disconnected
    // from the shape entirely. But calculating what portion of the shape
    // is actually visible, as constrained by the diagonal axis lines, is not
    // so easy and anyway we lost the information we would have needed to do
    // this inside scatterHover.
    if(newPointData.index === undefined) {
        var yFracUp = 1 - (newPointData.y0 / pointData.ya._length),
            xLen = pointData.xa._length,
            xMin = xLen * yFracUp / 2,
            xMax = xLen - xMin;
        newPointData.x0 = Math.max(Math.min(newPointData.x0, xMax), xMin);
        newPointData.x1 = Math.max(Math.min(newPointData.x1, xMax), xMin);
        return scatterPointData;
    }

    var cdi = newPointData.cd[newPointData.index];

    newPointData.a = cdi.a;
    newPointData.b = cdi.b;
    newPointData.c = cdi.c;

    newPointData.xLabelVal = undefined;
    newPointData.yLabelVal = undefined;
    // TODO: nice formatting, and label by axis title, for a, b, and c?

    var trace = newPointData.trace,
        ternary = trace._ternary,
        hoverinfo = trace.hoverinfo.split('+'),
        text = [];

    function textPart(ax, val) {
        text.push(ax._hovertitle + ': ' + Axes.tickText(ax, val, 'hover').text);
    }

    if(hoverinfo.indexOf('all') !== -1) hoverinfo = ['a', 'b', 'c'];
    if(hoverinfo.indexOf('a') !== -1) textPart(ternary.aaxis, cdi.a);
    if(hoverinfo.indexOf('b') !== -1) textPart(ternary.baxis, cdi.b);
    if(hoverinfo.indexOf('c') !== -1) textPart(ternary.caxis, cdi.c);

    newPointData.extraText = text.join('<br>');

    return scatterPointData;
};

},{"../../plots/cartesian/axes":642,"../scatter/hover":843}],886:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var ScatterTernary = {};

ScatterTernary.attributes = require('./attributes');
ScatterTernary.supplyDefaults = require('./defaults');
ScatterTernary.colorbar = require('../scatter/colorbar');
ScatterTernary.calc = require('./calc');
ScatterTernary.plot = require('./plot');
ScatterTernary.style = require('./style');
ScatterTernary.hoverPoints = require('./hover');
ScatterTernary.selectPoints = require('./select');

ScatterTernary.moduleType = 'trace';
ScatterTernary.name = 'scatterternary';
ScatterTernary.basePlotModule = require('../../plots/ternary');
ScatterTernary.categories = ['ternary', 'symbols', 'markerColorscale', 'showLegend'];
ScatterTernary.meta = {
    hrName: 'scatter_ternary',
    description: [
        'Provides similar functionality to the *scatter* type but on a ternary phase diagram.',
        'The data is provided by at least two arrays out of `a`, `b`, `c` triplets.'
    ].join(' ')
};

module.exports = ScatterTernary;

},{"../../plots/ternary":710,"../scatter/colorbar":837,"./attributes":882,"./calc":883,"./defaults":884,"./hover":885,"./plot":887,"./select":888,"./style":889}],887:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scatterPlot = require('../scatter/plot');


module.exports = function plot(ternary, data) {
    var plotContainer = ternary.plotContainer;

    // remove all nodes inside the scatter layer
    plotContainer.select('.scatterlayer').selectAll('*').remove();

    // mimic cartesian plotinfo
    var plotinfo = {
        xaxis: ternary.xaxis,
        yaxis: ternary.yaxis,
        plot: plotContainer
    };

    var calcdata = new Array(data.length),
        fullCalcdata = ternary.graphDiv.calcdata;

    for(var i = 0; i < fullCalcdata.length; i++) {
        var j = data.indexOf(fullCalcdata[i][0].trace);

        if(j === -1) continue;

        calcdata[j] = fullCalcdata[i];

        // while we're here and have references to both the Ternary object
        // and fullData, connect the two (for use by hover)
        data[j]._ternary = ternary;
    }

    scatterPlot(ternary.graphDiv, plotinfo, calcdata);
};

},{"../scatter/plot":851}],888:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scatterSelect = require('../scatter/select');


module.exports = function selectPoints(searchInfo, polygon) {
    var selection = scatterSelect(searchInfo, polygon);
    if(!selection) return;

    var cd = searchInfo.cd,
        pt, cdi, i;

    for(i = 0; i < selection.length; i++) {
        pt = selection[i];
        cdi = cd[pt.pointNumber];
        pt.a = cdi.a;
        pt.b = cdi.b;
        pt.c = cdi.c;
        delete pt.x;
        delete pt.y;
    }

    return selection;
};

},{"../scatter/select":852}],889:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var scatterStyle = require('../scatter/style');


module.exports = function style(gd) {
    var modules = gd._fullLayout._modules;

    // we're just going to call scatter style... if we already
    // called it, don't need to redo.
    // Later though we may want differences, or we may make style
    // more specific in its scope, then we can remove this.
    for(var i = 0; i < modules.length; i++) {
        if(modules[i].name === 'scatter') return;
    }

    scatterStyle(gd);
};

},{"../scatter/style":853}],890:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Color = require('../../components/color');
var colorscaleAttrs = require('../../components/colorscale/attributes');
var colorbarAttrs = require('../../components/colorbar/attributes');

var extendFlat = require('../../lib/extend').extendFlat;

function makeContourProjAttr(axLetter) {
    return {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: [
            'Determines whether or not these contour lines are projected',
            'on the', axLetter, 'plane.',
            'If `highlight` is set to *true* (the default), the projected',
            'lines are shown on hover.',
            'If `show` is set to *true*, the projected lines are shown',
            'in permanence.'
        ].join(' ')
    };
}

function makeContourAttr(axLetter) {
    return {
        show: {
            valType: 'boolean',
            role: 'info',
            dflt: false,
            description: [
                'Determines whether or not contour lines about the', axLetter,
                'dimension are drawn.'
            ].join(' ')
        },
        project: {
            x: makeContourProjAttr('x'),
            y: makeContourProjAttr('y'),
            z: makeContourProjAttr('z')
        },
        color: {
            valType: 'color',
            role: 'style',
            dflt: Color.defaultLine,
            description: 'Sets the color of the contour lines.'
        },
        usecolormap: {
            valType: 'boolean',
            role: 'info',
            dflt: false,
            description: [
                'An alternate to *color*.',
                'Determines whether or not the contour lines are colored using',
                'the trace *colorscale*.'
            ].join(' ')
        },
        width: {
            valType: 'number',
            role: 'style',
            min: 1,
            max: 16,
            dflt: 2,
            description: 'Sets the width of the contour lines.'
        },
        highlight: {
            valType: 'boolean',
            role: 'info',
            dflt: true,
            description: [
                'Determines whether or not contour lines about the', axLetter,
                'dimension are highlighted on hover.'
            ].join(' ')
        },
        highlightcolor: {
            valType: 'color',
            role: 'style',
            dflt: Color.defaultLine,
            description: 'Sets the color of the highlighted contour lines.'
        },
        highlightwidth: {
            valType: 'number',
            role: 'style',
            min: 1,
            max: 16,
            dflt: 2,
            description: 'Sets the width of the highlighted contour lines.'
        }
    };
}

module.exports = {
    z: {
        valType: 'data_array',
        description: 'Sets the z coordinates.'
    },
    x: {
        valType: 'data_array',
        description: 'Sets the x coordinates.'
    },
    y: {
        valType: 'data_array',
        description: 'Sets the y coordinates.'
    },

    text: {
        valType: 'data_array',
        description: 'Sets the text elements associated with each z value.'
    },
    surfacecolor: {
        valType: 'data_array',
        description: [
            'Sets the surface color values,',
            'used for setting a color scale independent of `z`.'
        ].join(' ')
    },

    // Todo this block has a structure of colorscale/attributes.js but with colorscale/color_attributes.js names
    cauto: colorscaleAttrs.zauto,
    cmin: colorscaleAttrs.zmin,
    cmax: colorscaleAttrs.zmax,
    colorscale: colorscaleAttrs.colorscale,
    autocolorscale: extendFlat({}, colorscaleAttrs.autocolorscale,
        {dflt: false}),
    reversescale: colorscaleAttrs.reversescale,
    showscale: colorscaleAttrs.showscale,
    colorbar: colorbarAttrs,

    contours: {
        x: makeContourAttr('x'),
        y: makeContourAttr('y'),
        z: makeContourAttr('z')
    },
    hidesurface: {
        valType: 'boolean',
        role: 'info',
        dflt: false,
        description: [
            'Determines whether or not a surface is drawn.',
            'For example, set `hidesurface` to *false*',
            '`contours.x.show` to *true* and',
            '`contours.y.show` to *true* to draw a wire frame plot.'
        ].join(' ')
    },

    lightposition: {
        x: {
            valType: 'number',
            role: 'style',
            min: -1e5,
            max: 1e5,
            dflt: 10,
            description: 'Numeric vector, representing the X coordinate for each vertex.'
        },
        y: {
            valType: 'number',
            role: 'style',
            min: -1e5,
            max: 1e5,
            dflt: 1e4,
            description: 'Numeric vector, representing the Y coordinate for each vertex.'
        },
        z: {
            valType: 'number',
            role: 'style',
            min: -1e5,
            max: 1e5,
            dflt: 0,
            description: 'Numeric vector, representing the Z coordinate for each vertex.'
        }
    },

    lighting: {
        ambient: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 1.0,
            dflt: 0.8,
            description: 'Ambient light increases overall color visibility but can wash out the image.'
        },
        diffuse: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 1.00,
            dflt: 0.8,
            description: 'Represents the extent that incident rays are reflected in a range of angles.'
        },
        specular: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 2.00,
            dflt: 0.05,
            description: 'Represents the level that incident rays are reflected in a single direction, causing shine.'
        },
        roughness: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 1.00,
            dflt: 0.5,
            description: 'Alters specular reflection; the rougher the surface, the wider and less contrasty the shine.'
        },
        fresnel: {
            valType: 'number',
            role: 'style',
            min: 0.00,
            max: 5.00,
            dflt: 0.2,
            description: [
                'Represents the reflectance as a dependency of the viewing angle; e.g. paper is reflective',
                'when viewing it from the edge of the paper (almost 90 degrees), causing shine.'
            ].join(' ')
        }
    },

    opacity: {
        valType: 'number',
        role: 'style',
        min: 0,
        max: 1,
        dflt: 1,
        description: 'Sets the opacity of the surface.'
    },

    _deprecated: {
        zauto: extendFlat({}, colorscaleAttrs.zauto, {
            description: 'Obsolete. Use `cauto` instead.'
        }),
        zmin: extendFlat({}, colorscaleAttrs.zmin, {
            description: 'Obsolete. Use `cmin` instead.'
        }),
        zmax: extendFlat({}, colorscaleAttrs.zmax, {
            description: 'Obsolete. Use `cmax` instead.'
        })
    }
};

},{"../../components/color":510,"../../components/colorbar/attributes":511,"../../components/colorscale/attributes":515,"../../lib/extend":603}],891:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var colorscaleCalc = require('../../components/colorscale/calc');


// Compute auto-z and autocolorscale if applicable
module.exports = function calc(gd, trace) {
    if(trace.surfacecolor) {
        colorscaleCalc(trace, trace.surfacecolor, '', 'c');
    } else {
        colorscaleCalc(trace, trace.z, '', 'c');
    }
};

},{"../../components/colorscale/calc":516}],892:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var isNumeric = require('fast-isnumeric');

var Lib = require('../../lib');
var Plots = require('../../plots/plots');
var Colorscale = require('../../components/colorscale');
var drawColorbar = require('../../components/colorbar/draw');


module.exports = function colorbar(gd, cd) {
    var trace = cd[0].trace,
        cbId = 'cb' + trace.uid,
        cmin = trace.cmin,
        cmax = trace.cmax,
        vals = trace.surfacecolor || trace.z;

    if(!isNumeric(cmin)) cmin = Lib.aggNums(Math.min, null, vals);
    if(!isNumeric(cmax)) cmax = Lib.aggNums(Math.max, null, vals);

    gd._fullLayout._infolayer.selectAll('.' + cbId).remove();

    if(!trace.showscale) {
        Plots.autoMargin(gd, cbId);
        return;
    }

    var cb = cd[0].t.cb = drawColorbar(gd, cbId);
    var sclFunc = Colorscale.makeColorScaleFunc(
        Colorscale.extractScale(
            trace.colorscale,
            cmin,
            cmax
        ),
        { noNumericCheck: true }
    );

    cb.fillcolor(sclFunc)
        .filllevels({start: cmin, end: cmax, size: (cmax - cmin) / 254})
        .options(trace.colorbar)();
};

},{"../../components/colorbar/draw":513,"../../components/colorscale":524,"../../lib":610,"../../plots/plots":702,"fast-isnumeric":97}],893:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var createSurface = require('gl-surface3d');
var ndarray = require('ndarray');
var homography = require('ndarray-homography');
var fill = require('ndarray-fill');
var ops = require('ndarray-ops');
var tinycolor = require('tinycolor2');

var str2RgbaArray = require('../../lib/str2rgbarray');

var MIN_RESOLUTION = 128;

function SurfaceTrace(scene, surface, uid) {
    this.scene = scene;
    this.uid = uid;
    this.surface = surface;
    this.data = null;
    this.showContour = [false, false, false];
    this.dataScale = 1.0;
}

var proto = SurfaceTrace.prototype;

proto.handlePick = function(selection) {
    if(selection.object === this.surface) {
        var selectIndex = [
            Math.min(
                Math.round(selection.data.index[0] / this.dataScale - 1)|0,
                this.data.z[0].length - 1
            ),
            Math.min(
                Math.round(selection.data.index[1] / this.dataScale - 1)|0,
                this.data.z.length - 1
            )
        ];
        var traceCoordinate = [0, 0, 0];

        if(Array.isArray(this.data.x[0])) {
            traceCoordinate[0] = this.data.x[selectIndex[1]][selectIndex[0]];
        } else {
            traceCoordinate[0] = this.data.x[selectIndex[0]];
        }
        if(Array.isArray(this.data.y[0])) {
            traceCoordinate[1] = this.data.y[selectIndex[1]][selectIndex[0]];
        } else {
            traceCoordinate[1] = this.data.y[selectIndex[1]];
        }

        traceCoordinate[2] = this.data.z[selectIndex[1]][selectIndex[0]];
        selection.traceCoordinate = traceCoordinate;

        var sceneLayout = this.scene.fullSceneLayout;
        selection.dataCoordinate = [
            sceneLayout.xaxis.d2l(traceCoordinate[0], 0, this.data.xcalendar) * this.scene.dataScale[0],
            sceneLayout.yaxis.d2l(traceCoordinate[1], 0, this.data.ycalendar) * this.scene.dataScale[1],
            sceneLayout.zaxis.d2l(traceCoordinate[2], 0, this.data.zcalendar) * this.scene.dataScale[2]
        ];

        var text = this.data.text;
        if(text && text[selectIndex[1]] && text[selectIndex[1]][selectIndex[0]] !== undefined) {
            selection.textLabel = text[selectIndex[1]][selectIndex[0]];
        }
        else selection.textLabel = '';

        selection.data.dataCoordinate = selection.dataCoordinate.slice();

        this.surface.highlight(selection.data);

        // Snap spikes to data coordinate
        this.scene.glplot.spikes.position = selection.dataCoordinate;

        return true;
    }
};

function parseColorScale(colorscale, alpha) {
    if(alpha === undefined) alpha = 1;

    return colorscale.map(function(elem) {
        var index = elem[0];
        var color = tinycolor(elem[1]);
        var rgb = color.toRgb();
        return {
            index: index,
            rgb: [rgb.r, rgb.g, rgb.b, alpha]
        };
    });
}

function isColormapCircular(colormap) {
    var first = colormap[0].rgb,
        last = colormap[colormap.length - 1].rgb;

    return (
        first[0] === last[0] &&
        first[1] === last[1] &&
        first[2] === last[2] &&
        first[3] === last[3]
    );
}

// Pad coords by +1
function padField(field) {
    var shape = field.shape;
    var nshape = [shape[0] + 2, shape[1] + 2];
    var nfield = ndarray(new Float32Array(nshape[0] * nshape[1]), nshape);

    // Center
    ops.assign(nfield.lo(1, 1).hi(shape[0], shape[1]), field);

    // Edges
    ops.assign(nfield.lo(1).hi(shape[0], 1),
                field.hi(shape[0], 1));
    ops.assign(nfield.lo(1, nshape[1] - 1).hi(shape[0], 1),
                field.lo(0, shape[1] - 1).hi(shape[0], 1));
    ops.assign(nfield.lo(0, 1).hi(1, shape[1]),
                field.hi(1));
    ops.assign(nfield.lo(nshape[0] - 1, 1).hi(1, shape[1]),
                field.lo(shape[0] - 1));

    // Corners
    nfield.set(0, 0, field.get(0, 0));
    nfield.set(0, nshape[1] - 1, field.get(0, shape[1] - 1));
    nfield.set(nshape[0] - 1, 0, field.get(shape[0] - 1, 0));
    nfield.set(nshape[0] - 1, nshape[1] - 1, field.get(shape[0] - 1, shape[1] - 1));

    return nfield;
}

function refine(coords) {
    var minScale = Math.max(coords[0].shape[0], coords[0].shape[1]);

    if(minScale < MIN_RESOLUTION) {
        var scaleF = MIN_RESOLUTION / minScale;
        var nshape = [
            Math.floor((coords[0].shape[0]) * scaleF + 1)|0,
            Math.floor((coords[0].shape[1]) * scaleF + 1)|0 ];
        var nsize = nshape[0] * nshape[1];

        for(var i = 0; i < coords.length; ++i) {
            var padImg = padField(coords[i]);
            var scaledImg = ndarray(new Float32Array(nsize), nshape);
            homography(scaledImg, padImg, [scaleF, 0, 0,
                0, scaleF, 0,
                0, 0, 1]);
            coords[i] = scaledImg;
        }

        return scaleF;
    }

    return 1.0;
}

proto.setContourLevels = function() {
    var nlevels = [[], [], []];
    var needsUpdate = false;

    for(var i = 0; i < 3; ++i) {
        if(this.showContour[i]) {
            needsUpdate = true;
            nlevels[i] = this.scene.contourLevels[i];
        }
    }

    if(needsUpdate) {
        this.surface.update({ levels: nlevels });
    }
};

proto.update = function(data) {
    var i,
        scene = this.scene,
        sceneLayout = scene.fullSceneLayout,
        surface = this.surface,
        alpha = data.opacity,
        colormap = parseColorScale(data.colorscale, alpha),
        z = data.z,
        x = data.x,
        y = data.y,
        xaxis = sceneLayout.xaxis,
        yaxis = sceneLayout.yaxis,
        zaxis = sceneLayout.zaxis,
        scaleFactor = scene.dataScale,
        xlen = z[0].length,
        ylen = z.length,
        coords = [
            ndarray(new Float32Array(xlen * ylen), [xlen, ylen]),
            ndarray(new Float32Array(xlen * ylen), [xlen, ylen]),
            ndarray(new Float32Array(xlen * ylen), [xlen, ylen])
        ],
        xc = coords[0],
        yc = coords[1],
        contourLevels = scene.contourLevels;

    // Save data
    this.data = data;

    /*
     * Fill and transpose zdata.
     * Consistent with 'heatmap' and 'contour', plotly 'surface'
     * 'z' are such that sub-arrays correspond to y-coords
     * and that the sub-array entries correspond to a x-coords,
     * which is the transpose of 'gl-surface-plot'.
     */

    var xcalendar = data.xcalendar,
        ycalendar = data.ycalendar,
        zcalendar = data.zcalendar;

    fill(coords[2], function(row, col) {
        return zaxis.d2l(z[col][row], 0, zcalendar) * scaleFactor[2];
    });

    // coords x
    if(Array.isArray(x[0])) {
        fill(xc, function(row, col) {
            return xaxis.d2l(x[col][row], 0, xcalendar) * scaleFactor[0];
        });
    } else {
        // ticks x
        fill(xc, function(row) {
            return xaxis.d2l(x[row], 0, xcalendar) * scaleFactor[0];
        });
    }

    // coords y
    if(Array.isArray(y[0])) {
        fill(yc, function(row, col) {
            return yaxis.d2l(y[col][row], 0, ycalendar) * scaleFactor[1];
        });
    } else {
        // ticks y
        fill(yc, function(row, col) {
            return yaxis.d2l(y[col], 0, ycalendar) * scaleFactor[1];
        });
    }

    var params = {
        colormap: colormap,
        levels: [[], [], []],
        showContour: [true, true, true],
        showSurface: !data.hidesurface,
        contourProject: [
            [false, false, false],
            [false, false, false],
            [false, false, false]
        ],
        contourWidth: [1, 1, 1],
        contourColor: [[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]],
        contourTint: [1, 1, 1],
        dynamicColor: [[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]],
        dynamicWidth: [1, 1, 1],
        dynamicTint: [1, 1, 1],
        opacity: 1
    };

    params.intensityBounds = [data.cmin, data.cmax];

    // Refine if necessary
    if(data.surfacecolor) {
        var intensity = ndarray(new Float32Array(xlen * ylen), [xlen, ylen]);

        fill(intensity, function(row, col) {
            return data.surfacecolor[col][row];
        });

        coords.push(intensity);
    }
    else {
        // when 'z' is used as 'intensity',
        // we must scale its value
        params.intensityBounds[0] *= scaleFactor[2];
        params.intensityBounds[1] *= scaleFactor[2];
    }

    this.dataScale = refine(coords);

    if(data.surfacecolor) {
        params.intensity = coords.pop();
    }

    if('opacity' in data) {
        if(data.opacity < 1) {
            params.opacity = 0.25 * data.opacity;
        }
    }

    var highlightEnable = [true, true, true];
    var axis = ['x', 'y', 'z'];

    for(i = 0; i < 3; ++i) {
        var contourParams = data.contours[axis[i]];
        highlightEnable[i] = contourParams.highlight;

        params.showContour[i] = contourParams.show || contourParams.highlight;
        if(!params.showContour[i]) continue;

        params.contourProject[i] = [
            contourParams.project.x,
            contourParams.project.y,
            contourParams.project.z
        ];

        if(contourParams.show) {
            this.showContour[i] = true;
            params.levels[i] = contourLevels[i];
            surface.highlightColor[i] = params.contourColor[i] = str2RgbaArray(contourParams.color);

            if(contourParams.usecolormap) {
                surface.highlightTint[i] = params.contourTint[i] = 0;
            }
            else {
                surface.highlightTint[i] = params.contourTint[i] = 1;
            }
            params.contourWidth[i] = contourParams.width;
        } else {
            this.showContour[i] = false;
        }

        if(contourParams.highlight) {
            params.dynamicColor[i] = str2RgbaArray(contourParams.highlightcolor);
            params.dynamicWidth[i] = contourParams.highlightwidth;
        }
    }

    // see https://github.com/plotly/plotly.js/issues/940
    if(isColormapCircular(colormap)) {
        params.vertexColor = true;
    }

    params.coords = coords;

    surface.update(params);

    surface.visible = data.visible;
    surface.enableDynamic = highlightEnable;

    surface.snapToData = true;

    if('lighting' in data) {
        surface.ambientLight = data.lighting.ambient;
        surface.diffuseLight = data.lighting.diffuse;
        surface.specularLight = data.lighting.specular;
        surface.roughness = data.lighting.roughness;
        surface.fresnel = data.lighting.fresnel;
    }

    if('lightposition' in data) {
        surface.lightPosition = [data.lightposition.x, data.lightposition.y, data.lightposition.z];
    }

    if(alpha && alpha < 1) {
        surface.supportsTransparency = true;
    }
};

proto.dispose = function() {
    this.scene.glplot.remove(this.surface);
    this.surface.dispose();
};

function createSurfaceTrace(scene, data) {
    var gl = scene.glplot.gl;
    var surface = createSurface({ gl: gl });
    var result = new SurfaceTrace(scene, surface, data.uid);
    result.update(data);
    scene.glplot.add(surface);
    return result;
}

module.exports = createSurfaceTrace;

},{"../../lib/str2rgbarray":624,"gl-surface3d":238,"ndarray":443,"ndarray-fill":433,"ndarray-homography":435,"ndarray-ops":437,"tinycolor2":985}],894:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Registry = require('../../registry');
var Lib = require('../../lib');

var colorscaleDefaults = require('../../components/colorscale/defaults');
var attributes = require('./attributes');


module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
    var i, j;

    function coerce(attr, dflt) {
        return Lib.coerce(traceIn, traceOut, attributes, attr, dflt);
    }

    var z = coerce('z');
    if(!z) {
        traceOut.visible = false;
        return;
    }

    var xlen = z[0].length;
    var ylen = z.length;

    coerce('x');
    coerce('y');

    var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleTraceDefaults');
    handleCalendarDefaults(traceIn, traceOut, ['x', 'y', 'z'], layout);

    if(!Array.isArray(traceOut.x)) {
        // build a linearly scaled x
        traceOut.x = [];
        for(i = 0; i < xlen; ++i) {
            traceOut.x[i] = i;
        }
    }

    coerce('text');
    if(!Array.isArray(traceOut.y)) {
        traceOut.y = [];
        for(i = 0; i < ylen; ++i) {
            traceOut.y[i] = i;
        }
    }

    // Coerce remaining properties
    [
        'lighting.ambient',
        'lighting.diffuse',
        'lighting.specular',
        'lighting.roughness',
        'lighting.fresnel',
        'lightposition.x',
        'lightposition.y',
        'lightposition.z',
        'hidesurface',
        'opacity'
    ].forEach(function(x) { coerce(x); });

    var surfaceColor = coerce('surfacecolor');

    coerce('colorscale');

    var dims = ['x', 'y', 'z'];
    for(i = 0; i < 3; ++i) {

        var contourDim = 'contours.' + dims[i];
        var show = coerce(contourDim + '.show');
        var highlight = coerce(contourDim + '.highlight');

        if(show || highlight) {
            for(j = 0; j < 3; ++j) {
                coerce(contourDim + '.project.' + dims[j]);
            }
        }

        if(show) {
            coerce(contourDim + '.color');
            coerce(contourDim + '.width');
            coerce(contourDim + '.usecolormap');
        }

        if(highlight) {
            coerce(contourDim + '.highlightcolor');
            coerce(contourDim + '.highlightwidth');
        }
    }

    // backward compatibility block
    if(!surfaceColor) {
        mapLegacy(traceIn, 'zmin', 'cmin');
        mapLegacy(traceIn, 'zmax', 'cmax');
        mapLegacy(traceIn, 'zauto', 'cauto');
    }

    // TODO if contours.?.usecolormap are false and hidesurface is true
    // the colorbar shouldn't be shown by default

    colorscaleDefaults(
        traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'c'}
    );
};

function mapLegacy(traceIn, oldAttr, newAttr) {
    if(oldAttr in traceIn && !(newAttr in traceIn)) {
        traceIn[newAttr] = traceIn[oldAttr];
    }
}

},{"../../components/colorscale/defaults":519,"../../lib":610,"../../registry":717,"./attributes":890}],895:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/


'use strict';

var Surface = {};

Surface.attributes = require('./attributes');
Surface.supplyDefaults = require('./defaults');
Surface.colorbar = require('./colorbar');
Surface.calc = require('./calc');
Surface.plot = require('./convert');

Surface.moduleType = 'trace';
Surface.name = 'surface';
Surface.basePlotModule = require('../../plots/gl3d');
Surface.categories = ['gl3d', 'noOpacity'];
Surface.meta = {
    description: [
        'The data the describes the coordinates of the surface is set in `z`.',
        'Data in `z` should be a {2D array}.',

        'Coordinates in `x` and `y` can either be 1D {arrays}',
        'or {2D arrays} (e.g. to graph parametric surfaces).',

        'If not provided in `x` and `y`, the x and y coordinates are assumed',
        'to be linear starting at 0 with a unit step.',

        'The color scale corresponds to the `z` values by default.',
        'For custom color scales, use `surfacecolor` which should be a {2D array},',
        'where its bounds can be controlled using `cmin` and `cmax`.'
    ].join(' ')
};

module.exports = Surface;

},{"../../plots/gl3d":681,"./attributes":890,"./calc":891,"./colorbar":892,"./convert":893,"./defaults":894}],896:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');
var Registry = require('../registry');
var PlotSchema = require('../plot_api/plot_schema');
var axisIds = require('../plots/cartesian/axis_ids');
var autoType = require('../plots/cartesian/axis_autotype');
var setConvert = require('../plots/cartesian/set_convert');

var INEQUALITY_OPS = ['=', '<', '>=', '>', '<='];
var INTERVAL_OPS = ['[]', '()', '[)', '(]', '][', ')(', '](', ')['];
var SET_OPS = ['{}', '}{'];

exports.moduleType = 'transform';

exports.name = 'filter';

exports.attributes = {
    enabled: {
        valType: 'boolean',
        dflt: true,
        description: [
            'Determines whether this filter transform is enabled or disabled.'
        ].join(' ')
    },
    target: {
        valType: 'string',
        strict: true,
        noBlank: true,
        arrayOk: true,
        dflt: 'x',
        description: [
            'Sets the filter target by which the filter is applied.',

            'If a string, *target* is assumed to be a reference to a data array',
            'in the parent trace object.',
            'To filter about nested variables, use *.* to access them.',
            'For example, set `target` to *marker.color* to filter',
            'about the marker color array.',

            'If an array, *target* is then the data array by which the filter is applied.'
        ].join(' ')
    },
    operation: {
        valType: 'enumerated',
        values: [].concat(INEQUALITY_OPS).concat(INTERVAL_OPS).concat(SET_OPS),
        dflt: '=',
        description: [
            'Sets the filter operation.',

            '*=* keeps items equal to `value`',

            '*<* keeps items less than `value`',
            '*<=* keeps items less than or equal to `value`',

            '*>* keeps items greater than `value`',
            '*>=* keeps items greater than or equal to `value`',

            '*[]* keeps items inside `value[0]` to value[1]` including both bounds`',
            '*()* keeps items inside `value[0]` to value[1]` excluding both bounds`',
            '*[)* keeps items inside `value[0]` to value[1]` including `value[0]` but excluding `value[1]',
            '*(]* keeps items inside `value[0]` to value[1]` excluding `value[0]` but including `value[1]',

            '*][* keeps items outside `value[0]` to value[1]` and equal to both bounds`',
            '*)(* keeps items outside `value[0]` to value[1]`',
            '*](* keeps items outside `value[0]` to value[1]` and equal to `value[0]`',
            '*)[* keeps items outside `value[0]` to value[1]` and equal to `value[1]`',

            '*{}* keeps items present in a set of values',
            '*}{* keeps items not present in a set of values'
        ].join(' ')
    },
    value: {
        valType: 'any',
        dflt: 0,
        description: [
            'Sets the value or values by which to filter by.',

            'Values are expected to be in the same type as the data linked',
            'to *target*.',

            'When `operation` is set to one of the inequality values',
            '(' + INEQUALITY_OPS + ')',
            '*value* is expected to be a number or a string.',

            'When `operation` is set to one of the interval value',
            '(' + INTERVAL_OPS + ')',
            '*value* is expected to be 2-item array where the first item',
            'is the lower bound and the second item is the upper bound.',

            'When `operation`, is set to one of the set value',
            '(' + SET_OPS + ')',
            '*value* is expected to be an array with as many items as',
            'the desired set elements.'
        ].join(' ')
    }
};

exports.supplyDefaults = function(transformIn) {
    var transformOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(transformIn, transformOut, exports.attributes, attr, dflt);
    }

    var enabled = coerce('enabled');

    if(enabled) {
        coerce('operation');
        coerce('value');
        coerce('target');

        var handleCalendarDefaults = Registry.getComponentMethod('calendars', 'handleDefaults');
        handleCalendarDefaults(transformIn, transformOut, 'valuecalendar', null);
        handleCalendarDefaults(transformIn, transformOut, 'targetcalendar', null);
    }

    return transformOut;
};

exports.calcTransform = function(gd, trace, opts) {
    if(!opts.enabled) return;

    var target = opts.target,
        filterArray = getFilterArray(trace, target),
        len = filterArray.length;

    if(!len) return;

    var targetCalendar = opts.targetcalendar;

    // even if you provide targetcalendar, if target is a string and there
    // is a calendar attribute matching target it will get used instead.
    if(typeof target === 'string') {
        var attrTargetCalendar = Lib.nestedProperty(trace, target + 'calendar').get();
        if(attrTargetCalendar) targetCalendar = attrTargetCalendar;
    }

    // if target points to an axis, use the type we already have for that
    // axis to find the data type. Otherwise use the values to autotype.
    var d2cTarget = (target === 'x' || target === 'y' || target === 'z') ?
        target : filterArray;

    var dataToCoord = getDataToCoordFunc(gd, trace, d2cTarget),
        filterFunc = getFilterFunc(opts, dataToCoord, targetCalendar),
        arrayAttrs = PlotSchema.findArrayAttributes(trace),
        originalArrays = {};

    // copy all original array attribute values,
    // and clear arrays in trace
    for(var k = 0; k < arrayAttrs.length; k++) {
        var attr = arrayAttrs[k],
            np = Lib.nestedProperty(trace, attr);

        originalArrays[attr] = Lib.extendDeep([], np.get());
        np.set([]);
    }

    function fill(attr, i) {
        var oldArr = originalArrays[attr],
            newArr = Lib.nestedProperty(trace, attr).get();

        newArr.push(oldArr[i]);
    }

    for(var i = 0; i < len; i++) {
        var v = filterArray[i];

        if(!filterFunc(v)) continue;

        for(var j = 0; j < arrayAttrs.length; j++) {
            fill(arrayAttrs[j], i);
        }
    }
};

function getFilterArray(trace, target) {
    if(typeof target === 'string' && target) {
        var array = Lib.nestedProperty(trace, target).get();

        return Array.isArray(array) ? array : [];
    }
    else if(Array.isArray(target)) return target.slice();

    return false;
}

function getDataToCoordFunc(gd, trace, target) {
    var ax;

    // In the case of an array target, make a mock data array
    // and call supplyDefaults to the data type and
    // setup the data-to-calc method.
    if(Array.isArray(target)) {
        ax = {
            type: autoType(target),
            _categories: []
        };

        setConvert(ax);

        if(ax.type === 'category') {
            // build up ax._categories (usually done during ax.makeCalcdata()
            for(var i = 0; i < target.length; i++) {
                ax.d2c(target[i]);
            }
        }
    }
    else {
        ax = axisIds.getFromTrace(gd, trace, target);
    }

    // if 'target' has corresponding axis
    // -> use setConvert method
    if(ax) return ax.d2c;

    // special case for 'ids'
    // -> cast to String
    if(target === 'ids') return function(v) { return String(v); };

    // otherwise (e.g. numeric-array of 'marker.color' or 'marker.size')
    // -> cast to Number
    return function(v) { return +v; };
}

function getFilterFunc(opts, d2c, targetCalendar) {
    var operation = opts.operation,
        value = opts.value,
        hasArrayValue = Array.isArray(value);

    function isOperationIn(array) {
        return array.indexOf(operation) !== -1;
    }

    var d2cValue = function(v) { return d2c(v, 0, opts.valuecalendar); },
        d2cTarget = function(v) { return d2c(v, 0, targetCalendar); };

    var coercedValue;

    if(isOperationIn(INEQUALITY_OPS)) {
        coercedValue = hasArrayValue ? d2cValue(value[0]) : d2cValue(value);
    }
    else if(isOperationIn(INTERVAL_OPS)) {
        coercedValue = hasArrayValue ?
            [d2cValue(value[0]), d2cValue(value[1])] :
            [d2cValue(value), d2cValue(value)];
    }
    else if(isOperationIn(SET_OPS)) {
        coercedValue = hasArrayValue ? value.map(d2cValue) : [d2cValue(value)];
    }

    switch(operation) {

        case '=':
            return function(v) { return d2cTarget(v) === coercedValue; };

        case '<':
            return function(v) { return d2cTarget(v) < coercedValue; };

        case '<=':
            return function(v) { return d2cTarget(v) <= coercedValue; };

        case '>':
            return function(v) { return d2cTarget(v) > coercedValue; };

        case '>=':
            return function(v) { return d2cTarget(v) >= coercedValue; };

        case '[]':
            return function(v) {
                var cv = d2cTarget(v);
                return cv >= coercedValue[0] && cv <= coercedValue[1];
            };

        case '()':
            return function(v) {
                var cv = d2cTarget(v);
                return cv > coercedValue[0] && cv < coercedValue[1];
            };

        case '[)':
            return function(v) {
                var cv = d2cTarget(v);
                return cv >= coercedValue[0] && cv < coercedValue[1];
            };

        case '(]':
            return function(v) {
                var cv = d2cTarget(v);
                return cv > coercedValue[0] && cv <= coercedValue[1];
            };

        case '][':
            return function(v) {
                var cv = d2cTarget(v);
                return cv <= coercedValue[0] || cv >= coercedValue[1];
            };

        case ')(':
            return function(v) {
                var cv = d2cTarget(v);
                return cv < coercedValue[0] || cv > coercedValue[1];
            };

        case '](':
            return function(v) {
                var cv = d2cTarget(v);
                return cv <= coercedValue[0] || cv > coercedValue[1];
            };

        case ')[':
            return function(v) {
                var cv = d2cTarget(v);
                return cv < coercedValue[0] || cv >= coercedValue[1];
            };

        case '{}':
            return function(v) {
                return coercedValue.indexOf(d2cTarget(v)) !== -1;
            };

        case '}{':
            return function(v) {
                return coercedValue.indexOf(d2cTarget(v)) === -1;
            };
    }
}

},{"../lib":610,"../plot_api/plot_schema":631,"../plots/cartesian/axis_autotype":643,"../plots/cartesian/axis_ids":645,"../plots/cartesian/set_convert":656,"../registry":717}],897:[function(require,module,exports){
/**
* Copyright 2012-2017, Plotly, Inc.
* All rights reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/

'use strict';

var Lib = require('../lib');
var PlotSchema = require('../plot_api/plot_schema');

exports.moduleType = 'transform';

exports.name = 'groupby';

exports.attributes = {
    enabled: {
        valType: 'boolean',
        dflt: true,
        description: [
            'Determines whether this group-by transform is enabled or disabled.'
        ].join(' ')
    },
    groups: {
        valType: 'data_array',
        dflt: [],
        description: [
            'Sets the groups in which the trace data will be split.',
            'For example, with `x` set to *[1, 2, 3, 4]* and',
            '`groups` set to *[\'a\', \'b\', \'a\', \'b\']*,',
            'the groupby transform with split in one trace',
            'with `x` [1, 3] and one trace with `x` [2, 4].'
        ].join(' ')
    },
    style: {
        valType: 'any',
        dflt: {},
        description: [
            'Sets each group style.',
            'For example, with `groups` set to *[\'a\', \'b\', \'a\', \'b\']*',
            'and `style` set to *{ a: { marker: { color: \'red\' } }}',
            'marker points in group *\'a\'* will be drawn in red.'
        ].join(' ')
    }
};

/**
 * Supply transform attributes defaults
 *
 * @param {object} transformIn
 *  object linked to trace.transforms[i] with 'type' set to exports.name
 * @param {object} fullData
 *  the plot's full data
 * @param {object} layout
 *  the plot's (not-so-full) layout
 *
 * @return {object} transformOut
 *  copy of transformIn that contains attribute defaults
 */
exports.supplyDefaults = function(transformIn) {
    var transformOut = {};

    function coerce(attr, dflt) {
        return Lib.coerce(transformIn, transformOut, exports.attributes, attr, dflt);
    }

    var enabled = coerce('enabled');

    if(!enabled) return transformOut;

    coerce('groups');
    coerce('style');

    return transformOut;
};

/**
 * Apply transform !!!
 *
 * @param {array} data
 *  array of transformed traces (is [fullTrace] upon first transform)
 *
 * @param {object} state
 *  state object which includes:
 *      - transform {object} full transform attributes
 *      - fullTrace {object} full trace object which is being transformed
 *      - fullData {array} full pre-transform(s) data array
 *      - layout {object} the plot's (not-so-full) layout
 *
 * @return {object} newData
 *  array of transformed traces
 */
exports.transform = function(data, state) {
    var newData = [];

    for(var i = 0; i < data.length; i++) {
        newData = newData.concat(transformOne(data[i], state));
    }

    return newData;
};

function initializeArray(newTrace, a) {
    Lib.nestedProperty(newTrace, a).set([]);
}

function pasteArray(newTrace, trace, j, a) {
    Lib.nestedProperty(newTrace, a).set(
        Lib.nestedProperty(newTrace, a).get().concat([
            Lib.nestedProperty(trace, a).get()[j]
        ])
    );
}

function transformOne(trace, state) {
    var opts = state.transform;
    var groups = trace.transforms[state.transformIndex].groups;

    if(!(Array.isArray(groups)) || groups.length === 0) {
        return trace;
    }

    var groupNames = Lib.filterUnique(groups),
        newData = new Array(groupNames.length),
        len = groups.length;

    var arrayAttrs = PlotSchema.findArrayAttributes(trace);

    var style = opts.style || {};

    for(var i = 0; i < groupNames.length; i++) {
        var groupName = groupNames[i];

        var newTrace = newData[i] = Lib.extendDeepNoArrays({}, trace);

        arrayAttrs.forEach(initializeArray.bind(null, newTrace));

        for(var j = 0; j < len; j++) {
            if(groups[j] !== groupName) continue;

            arrayAttrs.forEach(pasteArray.bind(0, newTrace, trace, j));
        }

        newTrace.name = groupName;

        // there's no need to coerce style[groupName] here
        // as another round of supplyDefaults is done on the transformed traces
        newTrace = Lib.extendDeepNoArrays(newTrace, style[groupName] || {});
    }

    return newData;
}

},{"../lib":610,"../plot_api/plot_schema":631}],898:[function(require,module,exports){
(function (Buffer){
'use strict';

var interlaceUtils = require('./interlace');

var pixelBppMap = {
  1: { // L
    0: 0,
    1: 0,
    2: 0,
    3: 0xff
  },
  2: { // LA
    0: 0,
    1: 0,
    2: 0,
    3: 1
  },
  3: { // RGB
    0: 0,
    1: 1,
    2: 2,
    3: 0xff
  },
  4: { // RGBA
    0: 0,
    1: 1,
    2: 2,
    3: 3
  }
};

function bitRetriever(data, depth) {

  var leftOver = [];
  var i = 0;

  function split() {
    if (i === data.length) {
      throw new Error('Ran out of data');
    }
    var byte = data[i];
    i++;
    var byte8, byte7, byte6, byte5, byte4, byte3, byte2, byte1;
    switch (depth) {
      default:
        throw new Error('unrecognised depth');
      case 16:
        byte2 = data[i];
        i++;
        leftOver.push(((byte << 8) + byte2));
        break;
      case 4:
        byte2 = byte & 0x0f;
        byte1 = byte >> 4;
        leftOver.push(byte1, byte2);
        break;
      case 2:
        byte4 = byte & 3;
        byte3 = byte >> 2 & 3;
        byte2 = byte >> 4 & 3;
        byte1 = byte >> 6 & 3;
        leftOver.push(byte1, byte2, byte3, byte4);
        break;
      case 1:
        byte8 = byte & 1;
        byte7 = byte >> 1 & 1;
        byte6 = byte >> 2 & 1;
        byte5 = byte >> 3 & 1;
        byte4 = byte >> 4 & 1;
        byte3 = byte >> 5 & 1;
        byte2 = byte >> 6 & 1;
        byte1 = byte >> 7 & 1;
        leftOver.push(byte1, byte2, byte3, byte4, byte5, byte6, byte7, byte8);
        break;
    }
  }

  return {
    get: function(count) {
      while (leftOver.length < count) {
        split();
      }
      var returner = leftOver.slice(0, count);
      leftOver = leftOver.slice(count);
      return returner;
    },
    resetAfterLine: function() {
      leftOver.length = 0;
    },
    end: function() {
      if (i !== data.length) {
        throw new Error('extra data found');
      }
    }
  };
}

function mapImage8Bit(image, pxData, getPxPos, bpp, data, rawPos) { // eslint-disable-line max-params
  var imageWidth = image.width;
  var imageHeight = image.height;
  var imagePass = image.index;
  for (var y = 0; y < imageHeight; y++) {
    for (var x = 0; x < imageWidth; x++) {
      var pxPos = getPxPos(x, y, imagePass);

      for (var i = 0; i < 4; i++) {
        var idx = pixelBppMap[bpp][i];
        if (i === data.length) {
          throw new Error('Ran out of data');
        }
        pxData[pxPos + i] = idx !== 0xff ? data[idx + rawPos] : 0xff;
      }
      rawPos += bpp; //eslint-disable-line no-param-reassign
    }
  }
  return rawPos;
}

function mapImageCustomBit(image, pxData, getPxPos, bpp, bits, maxBit) { // eslint-disable-line max-params
  var imageWidth = image.width;
  var imageHeight = image.height;
  var imagePass = image.index;
  for (var y = 0; y < imageHeight; y++) {
    for (var x = 0; x < imageWidth; x++) {
      var pixelData = bits.get(bpp);
      var pxPos = getPxPos(x, y, imagePass);

      for (var i = 0; i < 4; i++) {
        var idx = pixelBppMap[bpp][i];
        pxData[pxPos + i] = idx !== 0xff ? pixelData[idx] : maxBit;
      }
    }
    bits.resetAfterLine();
  }
}

exports.dataToBitMap = function(data, bitmapInfo) {

  var width = bitmapInfo.width;
  var height = bitmapInfo.height;
  var depth = bitmapInfo.depth;
  var bpp = bitmapInfo.bpp;
  var interlace = bitmapInfo.interlace;

  if (depth !== 8) {
    var bits = bitRetriever(data, depth);
  }
  var pxData;
  if (depth <= 8) {
    pxData = new Buffer(width * height * 4);
  }
  else {
    pxData = new Uint16Array(width * height * 4);
  }
  var maxBit = Math.pow(2, depth) - 1;
  var rawPos = 0;
  var images;
  var getPxPos;

  if (interlace) {
    images = interlaceUtils.getImagePasses(width, height);
    getPxPos = interlaceUtils.getInterlaceIterator(width, height);
  }
  else {
    var nonInterlacedPxPos = 0;
    getPxPos = function() {
      var returner = nonInterlacedPxPos;
      nonInterlacedPxPos += 4;
      return returner;
    };
    images = [{ width: width, height: height }];
  }

  for (var imageIndex = 0; imageIndex < images.length; imageIndex++) {
    if (depth === 8) {
      rawPos = mapImage8Bit(images[imageIndex], pxData, getPxPos, bpp, data, rawPos);
    }
    else {
      mapImageCustomBit(images[imageIndex], pxData, getPxPos, bpp, bits, maxBit);
    }
  }
  if (depth === 8) {
    if (rawPos !== data.length) {
      throw new Error('extra data found');
    }
  }
  else {
    bits.end();
  }

  return pxData;
};

}).call(this,require("buffer").Buffer)
},{"./interlace":908,"buffer":46}],899:[function(require,module,exports){
(function (Buffer){
'use strict';

var constants = require('./constants');

module.exports = function(data, width, height, options) {
  var outHasAlpha = options.colorType === constants.COLORTYPE_COLOR_ALPHA;
  if (options.inputHasAlpha && outHasAlpha) {
    return data;
  }
  if (!options.inputHasAlpha && !outHasAlpha) {
    return data;
  }

  var outBpp = outHasAlpha ? 4 : 3;
  var outData = new Buffer(width * height * outBpp);
  var inBpp = options.inputHasAlpha ? 4 : 3;
  var inIndex = 0;
  var outIndex = 0;

  var bgColor = options.bgColor || {};
  if (bgColor.red === undefined) {
    bgColor.red = 255;
  }
  if (bgColor.green === undefined) {
    bgColor.green = 255;
  }
  if (bgColor.blue === undefined) {
    bgColor.blue = 255;
  }

  for (var y = 0; y < height; y++) {
    for (var x = 0; x < width; x++) {
      var red = data[inIndex];
      var green = data[inIndex + 1];
      var blue = data[inIndex + 2];

      var alpha;
      if (options.inputHasAlpha) {
        alpha = data[inIndex + 3];
        if (!outHasAlpha) {
          alpha /= 255;
          red = Math.min(Math.max(Math.round((1 - alpha) * bgColor.red + alpha * red), 0), 255);
          green = Math.min(Math.max(Math.round((1 - alpha) * bgColor.green + alpha * green), 0), 255);
          blue = Math.min(Math.max(Math.round((1 - alpha) * bgColor.blue + alpha * blue), 0), 255);
        }
      }
      else {
        alpha = 255;
      }

      outData[outIndex] = red;
      outData[outIndex + 1] = green;
      outData[outIndex + 2] = blue;
      if (outHasAlpha) {
        outData[outIndex + 3] = alpha;
      }

      inIndex += inBpp;
      outIndex += outBpp;
    }
  }

  return outData;
};

}).call(this,require("buffer").Buffer)
},{"./constants":901,"buffer":46}],900:[function(require,module,exports){
(function (process,Buffer){
'use strict';


var util = require('util');
var Stream = require('stream');


var ChunkStream = module.exports = function() {
  Stream.call(this);

  this._buffers = [];
  this._buffered = 0;

  this._reads = [];
  this._paused = false;

  this._encoding = 'utf8';
  this.writable = true;
};
util.inherits(ChunkStream, Stream);


ChunkStream.prototype.read = function(length, callback) {

  this._reads.push({
    length: Math.abs(length),  // if length < 0 then at most this length
    allowLess: length < 0,
    func: callback
  });

  process.nextTick(function() {
    this._process();

    // its paused and there is not enought data then ask for more
    if (this._paused && this._reads.length > 0) {
      this._paused = false;

      this.emit('drain');
    }
  }.bind(this));
};

ChunkStream.prototype.write = function(data, encoding) {

  if (!this.writable) {
    this.emit('error', new Error('Stream not writable'));
    return false;
  }

  var dataBuffer;
  if (Buffer.isBuffer(data)) {
    dataBuffer = data;
  }
  else {
    dataBuffer = new Buffer(data, encoding || this._encoding);
  }

  this._buffers.push(dataBuffer);
  this._buffered += dataBuffer.length;

  this._process();

  // ok if there are no more read requests
  if (this._reads && this._reads.length === 0) {
    this._paused = true;
  }

  return this.writable && !this._paused;
};

ChunkStream.prototype.end = function(data, encoding) {

  if (data) {
    this.write(data, encoding);
  }

  this.writable = false;

  // already destroyed
  if (!this._buffers) {
    return;
  }

  // enqueue or handle end
  if (this._buffers.length === 0) {
    this._end();
  }
  else {
    this._buffers.push(null);
    this._process();
  }
};

ChunkStream.prototype.destroySoon = ChunkStream.prototype.end;

ChunkStream.prototype._end = function() {

  if (this._reads.length > 0) {
    this.emit('error',
      new Error('There are some read requests waitng on finished stream')
    );
  }

  this.destroy();
};

ChunkStream.prototype.destroy = function() {

  if (!this._buffers) {
    return;
  }

  this.writable = false;
  this._reads = null;
  this._buffers = null;

  this.emit('close');
};

ChunkStream.prototype._processReadAllowingLess = function(read) {
  // ok there is any data so that we can satisfy this request
  this._reads.shift(); // == read

  // first we need to peek into first buffer
  var smallerBuf = this._buffers[0];

  // ok there is more data than we need
  if (smallerBuf.length > read.length) {

    this._buffered -= read.length;
    this._buffers[0] = smallerBuf.slice(read.length);

    read.func.call(this, smallerBuf.slice(0, read.length));

  }
  else {
    // ok this is less than maximum length so use it all
    this._buffered -= smallerBuf.length;
    this._buffers.shift(); // == smallerBuf

    read.func.call(this, smallerBuf);
  }
};

ChunkStream.prototype._processRead = function(read) {
  this._reads.shift(); // == read

  var pos = 0;
  var count = 0;
  var data = new Buffer(read.length);

  // create buffer for all data
  while (pos < read.length) {

    var buf = this._buffers[count++];
    var len = Math.min(buf.length, read.length - pos);

    buf.copy(data, pos, 0, len);
    pos += len;

    // last buffer wasn't used all so just slice it and leave
    if (len !== buf.length) {
      this._buffers[--count] = buf.slice(len);
    }
  }

  // remove all used buffers
  if (count > 0) {
    this._buffers.splice(0, count);
  }

  this._buffered -= read.length;

  read.func.call(this, data);
};

ChunkStream.prototype._process = function() {

  try {
    // as long as there is any data and read requests
    while (this._buffered > 0 && this._reads && this._reads.length > 0) {

      var read = this._reads[0];

      // read any data (but no more than length)
      if (read.allowLess) {
        this._processReadAllowingLess(read);

      }
      else if (this._buffered >= read.length) {
        // ok we can meet some expectations

        this._processRead(read);
      }
      else {
        // not enought data to satisfy first request in queue
        // so we need to wait for more
        break;
      }
    }

    if (this._buffers && this._buffers.length > 0 && this._buffers[0] === null) {
      this._end();
    }
  }
  catch (ex) {
    this.emit('error', ex);
  }
};

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":923,"buffer":46,"stream":978,"util":1001}],901:[function(require,module,exports){
'use strict';


module.exports = {

  PNG_SIGNATURE: [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a],

  TYPE_IHDR: 0x49484452,
  TYPE_IEND: 0x49454e44,
  TYPE_IDAT: 0x49444154,
  TYPE_PLTE: 0x504c5445,
  TYPE_tRNS: 0x74524e53, // eslint-disable-line camelcase
  TYPE_gAMA: 0x67414d41, // eslint-disable-line camelcase

  // color-type bits
  COLORTYPE_GRAYSCALE: 0,
  COLORTYPE_PALETTE: 1,
  COLORTYPE_COLOR: 2,
  COLORTYPE_ALPHA: 4, // e.g. grayscale and alpha

  // color-type combinations
  COLORTYPE_PALETTE_COLOR: 3,
  COLORTYPE_COLOR_ALPHA: 6,

  COLORTYPE_TO_BPP_MAP: {
    0: 1,
    2: 3,
    3: 1,
    4: 2,
    6: 4
  },

  GAMMA_DIVISION: 100000
};

},{}],902:[function(require,module,exports){
'use strict';

var crcTable = [];

(function() {
  for (var i = 0; i < 256; i++) {
    var currentCrc = i;
    for (var j = 0; j < 8; j++) {
      if (currentCrc & 1) {
        currentCrc = 0xedb88320 ^ (currentCrc >>> 1);
      }
      else {
        currentCrc = currentCrc >>> 1;
      }
    }
    crcTable[i] = currentCrc;
  }
}());

var CrcCalculator = module.exports = function() {
  this._crc = -1;
};

CrcCalculator.prototype.write = function(data) {

  for (var i = 0; i < data.length; i++) {
    this._crc = crcTable[(this._crc ^ data[i]) & 0xff] ^ (this._crc >>> 8);
  }
  return true;
};

CrcCalculator.prototype.crc32 = function() {
  return this._crc ^ -1;
};


CrcCalculator.crc32 = function(buf) {

  var crc = -1;
  for (var i = 0; i < buf.length; i++) {
    crc = crcTable[(crc ^ buf[i]) & 0xff] ^ (crc >>> 8);
  }
  return crc ^ -1;
};

},{}],903:[function(require,module,exports){
(function (Buffer){
'use strict';

var paethPredictor = require('./paeth-predictor');

function filterNone(pxData, pxPos, byteWidth, rawData, rawPos) {
  pxData.copy(rawData, rawPos, pxPos, pxPos + byteWidth);
}

function filterSumNone(pxData, pxPos, byteWidth) {

  var sum = 0;
  var length = pxPos + byteWidth;

  for (var i = pxPos; i < length; i++) {
    sum += Math.abs(pxData[i]);
  }
  return sum;
}

function filterSub(pxData, pxPos, byteWidth, rawData, rawPos, bpp) {

  for (var x = 0; x < byteWidth; x++) {

    var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
    var val = pxData[pxPos + x] - left;

    rawData[rawPos + x] = val;
  }
}

function filterSumSub(pxData, pxPos, byteWidth, bpp) {

  var sum = 0;
  for (var x = 0; x < byteWidth; x++) {

    var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
    var val = pxData[pxPos + x] - left;

    sum += Math.abs(val);
  }

  return sum;
}

function filterUp(pxData, pxPos, byteWidth, rawData, rawPos) {

  for (var x = 0; x < byteWidth; x++) {

    var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
    var val = pxData[pxPos + x] - up;

    rawData[rawPos + x] = val;
  }
}

function filterSumUp(pxData, pxPos, byteWidth) {

  var sum = 0;
  var length = pxPos + byteWidth;
  for (var x = pxPos; x < length; x++) {

    var up = pxPos > 0 ? pxData[x - byteWidth] : 0;
    var val = pxData[x] - up;

    sum += Math.abs(val);
  }

  return sum;
}

function filterAvg(pxData, pxPos, byteWidth, rawData, rawPos, bpp) {

  for (var x = 0; x < byteWidth; x++) {

    var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
    var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
    var val = pxData[pxPos + x] - ((left + up) >> 1);

    rawData[rawPos + x] = val;
  }
}

function filterSumAvg(pxData, pxPos, byteWidth, bpp) {

  var sum = 0;
  for (var x = 0; x < byteWidth; x++) {

    var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
    var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
    var val = pxData[pxPos + x] - ((left + up) >> 1);

    sum += Math.abs(val);
  }

  return sum;
}

function filterPaeth(pxData, pxPos, byteWidth, rawData, rawPos, bpp) {

  for (var x = 0; x < byteWidth; x++) {

    var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
    var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
    var upleft = pxPos > 0 && x >= bpp ? pxData[pxPos + x - (byteWidth + bpp)] : 0;
    var val = pxData[pxPos + x] - paethPredictor(left, up, upleft);

    rawData[rawPos + x] = val;
  }
}

function filterSumPaeth(pxData, pxPos, byteWidth, bpp) {
  var sum = 0;
  for (var x = 0; x < byteWidth; x++) {

    var left = x >= bpp ? pxData[pxPos + x - bpp] : 0;
    var up = pxPos > 0 ? pxData[pxPos + x - byteWidth] : 0;
    var upleft = pxPos > 0 && x >= bpp ? pxData[pxPos + x - (byteWidth + bpp)] : 0;
    var val = pxData[pxPos + x] - paethPredictor(left, up, upleft);

    sum += Math.abs(val);
  }

  return sum;
}

var filters = {
  0: filterNone,
  1: filterSub,
  2: filterUp,
  3: filterAvg,
  4: filterPaeth
};

var filterSums = {
  0: filterSumNone,
  1: filterSumSub,
  2: filterSumUp,
  3: filterSumAvg,
  4: filterSumPaeth
};

module.exports = function(pxData, width, height, options, bpp) {

  var filterTypes;
  if (!('filterType' in options) || options.filterType === -1) {
    filterTypes = [0, 1, 2, 3, 4];
  }
  else if (typeof options.filterType === 'number') {
    filterTypes = [options.filterType];
  }
  else {
    throw new Error('unrecognised filter types');
  }

  var byteWidth = width * bpp;
  var rawPos = 0;
  var pxPos = 0;
  var rawData = new Buffer((byteWidth + 1) * height);
  var sel = filterTypes[0];

  for (var y = 0; y < height; y++) {

    if (filterTypes.length > 1) {
      // find best filter for this line (with lowest sum of values)
      var min = Infinity;

      for (var i = 0; i < filterTypes.length; i++) {
        var sum = filterSums[filterTypes[i]](pxData, pxPos, byteWidth, bpp);
        if (sum < min) {
          sel = filterTypes[i];
          min = sum;
        }
      }
    }

    rawData[rawPos] = sel;
    rawPos++;
    filters[sel](pxData, pxPos, byteWidth, rawData, rawPos, bpp);
    rawPos += byteWidth;
    pxPos += byteWidth;
  }
  return rawData;
};

}).call(this,require("buffer").Buffer)
},{"./paeth-predictor":912,"buffer":46}],904:[function(require,module,exports){
(function (Buffer){
'use strict';

var util = require('util');
var ChunkStream = require('./chunkstream');
var Filter = require('./filter-parse');


var FilterAsync = module.exports = function(bitmapInfo) {
  ChunkStream.call(this);

  var buffers = [];
  var that = this;
  this._filter = new Filter(bitmapInfo, {
    read: this.read.bind(this),
    write: function(buffer) {
      buffers.push(buffer);
    },
    complete: function() {
      that.emit('complete', Buffer.concat(buffers));
    }
  });

  this._filter.start();
};
util.inherits(FilterAsync, ChunkStream);

}).call(this,require("buffer").Buffer)
},{"./chunkstream":900,"./filter-parse":906,"buffer":46,"util":1001}],905:[function(require,module,exports){
(function (Buffer){
'use strict';

var SyncReader = require('./sync-reader');
var Filter = require('./filter-parse');


exports.process = function(inBuffer, bitmapInfo) {

  var outBuffers = [];
  var reader = new SyncReader(inBuffer);
  var filter = new Filter(bitmapInfo, {
    read: reader.read.bind(reader),
    write: function(bufferPart) {
      outBuffers.push(bufferPart);
    },
    complete: function() {
    }
  });

  filter.start();
  reader.process();

  return Buffer.concat(outBuffers);
};
}).call(this,require("buffer").Buffer)
},{"./filter-parse":906,"./sync-reader":918,"buffer":46}],906:[function(require,module,exports){
(function (Buffer){
'use strict';

var interlaceUtils = require('./interlace');
var paethPredictor = require('./paeth-predictor');

function getByteWidth(width, bpp, depth) {
  var byteWidth = width * bpp;
  if (depth !== 8) {
    byteWidth = Math.ceil(byteWidth / (8 / depth));
  }
  return byteWidth;
}

var Filter = module.exports = function(bitmapInfo, dependencies) {

  var width = bitmapInfo.width;
  var height = bitmapInfo.height;
  var interlace = bitmapInfo.interlace;
  var bpp = bitmapInfo.bpp;
  var depth = bitmapInfo.depth;

  this.read = dependencies.read;
  this.write = dependencies.write;
  this.complete = dependencies.complete;

  this._imageIndex = 0;
  this._images = [];
  if (interlace) {
    var passes = interlaceUtils.getImagePasses(width, height);
    for (var i = 0; i < passes.length; i++) {
      this._images.push({
        byteWidth: getByteWidth(passes[i].width, bpp, depth),
        height: passes[i].height,
        lineIndex: 0
      });
    }
  }
  else {
    this._images.push({
      byteWidth: getByteWidth(width, bpp, depth),
      height: height,
      lineIndex: 0
    });
  }

  // when filtering the line we look at the pixel to the left
  // the spec also says it is done on a byte level regardless of the number of pixels
  // so if the depth is byte compatible (8 or 16) we subtract the bpp in order to compare back
  // a pixel rather than just a different byte part. However if we are sub byte, we ignore.
  if (depth === 8) {
    this._xComparison = bpp;
  }
  else if (depth === 16) {
    this._xComparison = bpp * 2;
  }
  else {
    this._xComparison = 1;
  }
};

Filter.prototype.start = function() {
  this.read(this._images[this._imageIndex].byteWidth + 1, this._reverseFilterLine.bind(this));
};

Filter.prototype._unFilterType1 = function(rawData, unfilteredLine, byteWidth) {

  var xComparison = this._xComparison;
  var xBiggerThan = xComparison - 1;

  for (var x = 0; x < byteWidth; x++) {
    var rawByte = rawData[1 + x];
    var f1Left = x > xBiggerThan ? unfilteredLine[x - xComparison] : 0;
    unfilteredLine[x] = rawByte + f1Left;
  }
};

Filter.prototype._unFilterType2 = function(rawData, unfilteredLine, byteWidth) {

  var lastLine = this._lastLine;

  for (var x = 0; x < byteWidth; x++) {
    var rawByte = rawData[1 + x];
    var f2Up = lastLine ? lastLine[x] : 0;
    unfilteredLine[x] = rawByte + f2Up;
  }
};

Filter.prototype._unFilterType3 = function(rawData, unfilteredLine, byteWidth) {

  var xComparison = this._xComparison;
  var xBiggerThan = xComparison - 1;
  var lastLine = this._lastLine;

  for (var x = 0; x < byteWidth; x++) {
    var rawByte = rawData[1 + x];
    var f3Up = lastLine ? lastLine[x] : 0;
    var f3Left = x > xBiggerThan ? unfilteredLine[x - xComparison] : 0;
    var f3Add = Math.floor((f3Left + f3Up) / 2);
    unfilteredLine[x] = rawByte + f3Add;
  }
};

Filter.prototype._unFilterType4 = function(rawData, unfilteredLine, byteWidth) {

  var xComparison = this._xComparison;
  var xBiggerThan = xComparison - 1;
  var lastLine = this._lastLine;

  for (var x = 0; x < byteWidth; x++) {
    var rawByte = rawData[1 + x];
    var f4Up = lastLine ? lastLine[x] : 0;
    var f4Left = x > xBiggerThan ? unfilteredLine[x - xComparison] : 0;
    var f4UpLeft = x > xBiggerThan && lastLine ? lastLine[x - xComparison] : 0;
    var f4Add = paethPredictor(f4Left, f4Up, f4UpLeft);
    unfilteredLine[x] = rawByte + f4Add;
  }
};

Filter.prototype._reverseFilterLine = function(rawData) {

  var filter = rawData[0];
  var unfilteredLine;
  var currentImage = this._images[this._imageIndex];
  var byteWidth = currentImage.byteWidth;

  if (filter === 0) {
    unfilteredLine = rawData.slice(1, byteWidth + 1);
  }
  else {

    unfilteredLine = new Buffer(byteWidth);

    switch (filter) {
      case 1:
        this._unFilterType1(rawData, unfilteredLine, byteWidth);
        break;
      case 2:
        this._unFilterType2(rawData, unfilteredLine, byteWidth);
        break;
      case 3:
        this._unFilterType3(rawData, unfilteredLine, byteWidth);
        break;
      case 4:
        this._unFilterType4(rawData, unfilteredLine, byteWidth);
        break;
      default:
        throw new Error('Unrecognised filter type - ' + filter);
    }
  }

  this.write(unfilteredLine);

  currentImage.lineIndex++;
  if (currentImage.lineIndex >= currentImage.height) {
    this._lastLine = null;
    this._imageIndex++;
    currentImage = this._images[this._imageIndex];
  }
  else {
    this._lastLine = unfilteredLine;
  }

  if (currentImage) {
    // read, using the byte width that may be from the new current image
    this.read(currentImage.byteWidth + 1, this._reverseFilterLine.bind(this));
  }
  else {
    this._lastLine = null;
    this.complete();
  }
};

}).call(this,require("buffer").Buffer)
},{"./interlace":908,"./paeth-predictor":912,"buffer":46}],907:[function(require,module,exports){
(function (Buffer){
'use strict';

function dePalette(indata, outdata, width, height, palette) {
  var pxPos = 0;
  // use values from palette
  for (var y = 0; y < height; y++) {
    for (var x = 0; x < width; x++) {
      var color = palette[indata[pxPos]];

      if (!color) {
        throw new Error('index ' + indata[pxPos] + ' not in palette');
      }

      for (var i = 0; i < 4; i++) {
        outdata[pxPos + i] = color[i];
      }
      pxPos += 4;
    }
  }
}

function replaceTransparentColor(indata, outdata, width, height, transColor) {
  var pxPos = 0;
  for (var y = 0; y < height; y++) {
    for (var x = 0; x < width; x++) {
      var makeTrans = false;

      if (transColor.length === 1) {
        if (transColor[0] === indata[pxPos]) {
          makeTrans = true;
        }
      }
      else if (transColor[0] === indata[pxPos] && transColor[1] === indata[pxPos + 1] && transColor[2] === indata[pxPos + 2]) {
        makeTrans = true;
      }
      if (makeTrans) {
        for (var i = 0; i < 4; i++) {
          outdata[pxPos + i] = 0;
        }
      }
      pxPos += 4;
    }
  }
}

function scaleDepth(indata, outdata, width, height, depth) {
  var maxOutSample = 255;
  var maxInSample = Math.pow(2, depth) - 1;
  var pxPos = 0;

  for (var y = 0; y < height; y++) {
    for (var x = 0; x < width; x++) {
      for (var i = 0; i < 4; i++) {
        outdata[pxPos + i] = Math.floor((indata[pxPos + i] * maxOutSample) / maxInSample + 0.5);
      }
      pxPos += 4;
    }
  }
}

module.exports = function(indata, imageData) {

  var depth = imageData.depth;
  var width = imageData.width;
  var height = imageData.height;
  var colorType = imageData.colorType;
  var transColor = imageData.transColor;
  var palette = imageData.palette;

  var outdata = indata; // only different for 16 bits

  if (colorType === 3) { // paletted
    dePalette(indata, outdata, width, height, palette);
  }
  else {
    if (transColor) {
      replaceTransparentColor(indata, outdata, width, height, transColor);
    }
    // if it needs scaling
    if (depth !== 8) {
      // if we need to change the buffer size
      if (depth === 16) {
        outdata = new Buffer(width * height * 4);
      }
      scaleDepth(indata, outdata, width, height, depth);
    }
  }
  return outdata;
};

}).call(this,require("buffer").Buffer)
},{"buffer":46}],908:[function(require,module,exports){
'use strict';

// Adam 7
//   0 1 2 3 4 5 6 7
// 0 x 6 4 6 x 6 4 6
// 1 7 7 7 7 7 7 7 7
// 2 5 6 5 6 5 6 5 6
// 3 7 7 7 7 7 7 7 7
// 4 3 6 4 6 3 6 4 6
// 5 7 7 7 7 7 7 7 7
// 6 5 6 5 6 5 6 5 6
// 7 7 7 7 7 7 7 7 7


var imagePasses = [
  { // pass 1 - 1px
    x: [0],
    y: [0]
  },
  { // pass 2 - 1px
    x: [4],
    y: [0]
  },
  { // pass 3 - 2px
    x: [0, 4],
    y: [4]
  },
  { // pass 4 - 4px
    x: [2, 6],
    y: [0, 4]
  },
  { // pass 5 - 8px
    x: [0, 2, 4, 6],
    y: [2, 6]
  },
  { // pass 6 - 16px
    x: [1, 3, 5, 7],
    y: [0, 2, 4, 6]
  },
  { // pass 7 - 32px
    x: [0, 1, 2, 3, 4, 5, 6, 7],
    y: [1, 3, 5, 7]
  }
];

exports.getImagePasses = function(width, height) {
  var images = [];
  var xLeftOver = width % 8;
  var yLeftOver = height % 8;
  var xRepeats = (width - xLeftOver) / 8;
  var yRepeats = (height - yLeftOver) / 8;
  for (var i = 0; i < imagePasses.length; i++) {
    var pass = imagePasses[i];
    var passWidth = xRepeats * pass.x.length;
    var passHeight = yRepeats * pass.y.length;
    for (var j = 0; j < pass.x.length; j++) {
      if (pass.x[j] < xLeftOver) {
        passWidth++;
      }
      else {
        break;
      }
    }
    for (j = 0; j < pass.y.length; j++) {
      if (pass.y[j] < yLeftOver) {
        passHeight++;
      }
      else {
        break;
      }
    }
    if (passWidth > 0 && passHeight > 0) {
      images.push({ width: passWidth, height: passHeight, index: i });
    }
  }
  return images;
};

exports.getInterlaceIterator = function(width) {
  return function(x, y, pass) {
    var outerXLeftOver = x % imagePasses[pass].x.length;
    var outerX = (((x - outerXLeftOver) / imagePasses[pass].x.length) * 8) + imagePasses[pass].x[outerXLeftOver];
    var outerYLeftOver = y % imagePasses[pass].y.length;
    var outerY = (((y - outerYLeftOver) / imagePasses[pass].y.length) * 8) + imagePasses[pass].y[outerYLeftOver];
    return (outerX * 4) + (outerY * width * 4);
  };
};
},{}],909:[function(require,module,exports){
(function (Buffer){
'use strict';

var util = require('util');
var Stream = require('stream');
var constants = require('./constants');
var Packer = require('./packer');

var PackerAsync = module.exports = function(opt) {
  Stream.call(this);

  var options = opt || {};

  this._packer = new Packer(options);
  this._deflate = this._packer.createDeflate();

  this.readable = true;
};
util.inherits(PackerAsync, Stream);


PackerAsync.prototype.pack = function(data, width, height, gamma) {
  // Signature
  this.emit('data', new Buffer(constants.PNG_SIGNATURE));
  this.emit('data', this._packer.packIHDR(width, height));

  if (gamma) {
    this.emit('data', this._packer.packGAMA(gamma));
  }

  var filteredData = this._packer.filterData(data, width, height);

  // compress it
  this._deflate.on('error', this.emit.bind(this, 'error'));

  this._deflate.on('data', function(compressedData) {
    this.emit('data', this._packer.packIDAT(compressedData));
  }.bind(this));

  this._deflate.on('end', function() {
    this.emit('data', this._packer.packIEND());
    this.emit('end');
  }.bind(this));

  this._deflate.end(filteredData);
};

}).call(this,require("buffer").Buffer)
},{"./constants":901,"./packer":911,"buffer":46,"stream":978,"util":1001}],910:[function(require,module,exports){
(function (Buffer){
'use strict';

var hasSyncZlib = true;
var zlib = require('zlib');
if (!zlib.deflateSync) {
  hasSyncZlib = false;
}
var constants = require('./constants');
var Packer = require('./packer');

module.exports = function(metaData, opt) {

  if (!hasSyncZlib) {
    throw new Error('To use the sync capability of this library in old node versions, please also add a dependency on node-zlb-backport');
  }

  var options = opt || {};

  var packer = new Packer(options);

  var chunks = [];

  // Signature
  chunks.push(new Buffer(constants.PNG_SIGNATURE));

  // Header
  chunks.push(packer.packIHDR(metaData.width, metaData.height));

  if (metaData.gamma) {
    chunks.push(packer.packGAMA(metaData.gamma));
  }

  var filteredData = packer.filterData(metaData.data, metaData.width, metaData.height);

  // compress it
  var compressedData = zlib.deflateSync(filteredData, packer.getDeflateOptions());
  filteredData = null;

  if (!compressedData || !compressedData.length) {
    throw new Error('bad png - invalid compressed data response');
  }
  chunks.push(packer.packIDAT(compressedData));

  // End
  chunks.push(packer.packIEND());

  return Buffer.concat(chunks);
};

}).call(this,require("buffer").Buffer)
},{"./constants":901,"./packer":911,"buffer":46,"zlib":45}],911:[function(require,module,exports){
(function (Buffer){
'use strict';

var constants = require('./constants');
var CrcStream = require('./crc');
var bitPacker = require('./bitpacker');
var filter = require('./filter-pack');
var zlib = require('zlib');

var Packer = module.exports = function(options) {
  this._options = options;

  options.deflateChunkSize = options.deflateChunkSize || 32 * 1024;
  options.deflateLevel = options.deflateLevel != null ? options.deflateLevel : 9;
  options.deflateStrategy = options.deflateStrategy != null ? options.deflateStrategy : 3;
  options.inputHasAlpha = options.inputHasAlpha != null ? options.inputHasAlpha : true;
  options.deflateFactory = options.deflateFactory || zlib.createDeflate;
  options.bitDepth = options.bitDepth || 8;
  options.colorType = (typeof options.colorType === 'number') ? options.colorType : constants.COLORTYPE_COLOR_ALPHA;

  if (options.colorType !== constants.COLORTYPE_COLOR && options.colorType !== constants.COLORTYPE_COLOR_ALPHA) {
    throw new Error('option color type:' + options.colorType + ' is not supported at present');
  }
  if (options.bitDepth !== 8) {
    throw new Error('option bit depth:' + options.bitDepth + ' is not supported at present');
  }
};

Packer.prototype.getDeflateOptions = function() {
  return {
    chunkSize: this._options.deflateChunkSize,
    level: this._options.deflateLevel,
    strategy: this._options.deflateStrategy
  };
};

Packer.prototype.createDeflate = function() {
  return this._options.deflateFactory(this.getDeflateOptions());
};

Packer.prototype.filterData = function(data, width, height) {
  // convert to correct format for filtering (e.g. right bpp and bit depth)
  var packedData = bitPacker(data, width, height, this._options);

  // filter pixel data
  var bpp = constants.COLORTYPE_TO_BPP_MAP[this._options.colorType];
  var filteredData = filter(packedData, width, height, this._options, bpp);
  return filteredData;
};

Packer.prototype._packChunk = function(type, data) {

  var len = (data ? data.length : 0);
  var buf = new Buffer(len + 12);

  buf.writeUInt32BE(len, 0);
  buf.writeUInt32BE(type, 4);

  if (data) {
    data.copy(buf, 8);
  }

  buf.writeInt32BE(CrcStream.crc32(buf.slice(4, buf.length - 4)), buf.length - 4);
  return buf;
};

Packer.prototype.packGAMA = function(gamma) {
  var buf = new Buffer(4);
  buf.writeUInt32BE(Math.floor(gamma * constants.GAMMA_DIVISION), 0);
  return this._packChunk(constants.TYPE_gAMA, buf);
};

Packer.prototype.packIHDR = function(width, height) {

  var buf = new Buffer(13);
  buf.writeUInt32BE(width, 0);
  buf.writeUInt32BE(height, 4);
  buf[8] = this._options.bitDepth;  // Bit depth
  buf[9] = this._options.colorType; // colorType
  buf[10] = 0; // compression
  buf[11] = 0; // filter
  buf[12] = 0; // interlace

  return this._packChunk(constants.TYPE_IHDR, buf);
};

Packer.prototype.packIDAT = function(data) {
  return this._packChunk(constants.TYPE_IDAT, data);
};

Packer.prototype.packIEND = function() {
  return this._packChunk(constants.TYPE_IEND, null);
};
}).call(this,require("buffer").Buffer)
},{"./bitpacker":899,"./constants":901,"./crc":902,"./filter-pack":903,"buffer":46,"zlib":45}],912:[function(require,module,exports){
'use strict';

module.exports = function paethPredictor(left, above, upLeft) {

  var paeth = left + above - upLeft;
  var pLeft = Math.abs(paeth - left);
  var pAbove = Math.abs(paeth - above);
  var pUpLeft = Math.abs(paeth - upLeft);

  if (pLeft <= pAbove && pLeft <= pUpLeft) {
    return left;
  }
  if (pAbove <= pUpLeft) {
    return above;
  }
  return upLeft;
};
},{}],913:[function(require,module,exports){
'use strict';

var util = require('util');
var zlib = require('zlib');
var ChunkStream = require('./chunkstream');
var FilterAsync = require('./filter-parse-async');
var Parser = require('./parser');
var bitmapper = require('./bitmapper');
var formatNormaliser = require('./format-normaliser');

var ParserAsync = module.exports = function(options) {
  ChunkStream.call(this);

  this._parser = new Parser(options, {
    read: this.read.bind(this),
    error: this._handleError.bind(this),
    metadata: this._handleMetaData.bind(this),
    gamma: this.emit.bind(this, 'gamma'),
    palette: this._handlePalette.bind(this),
    transColor: this._handleTransColor.bind(this),
    finished: this._finished.bind(this),
    inflateData: this._inflateData.bind(this)
  });
  this._options = options;
  this.writable = true;

  this._parser.start();
};
util.inherits(ParserAsync, ChunkStream);


ParserAsync.prototype._handleError = function(err) {

  this.emit('error', err);

  this.writable = false;

  this.destroy();

  if (this._inflate && this._inflate.destroy) {
    this._inflate.destroy();
  }

  this.errord = true;
};

ParserAsync.prototype._inflateData = function(data) {
  if (!this._inflate) {
    this._inflate = zlib.createInflate();

    this._inflate.on('error', this.emit.bind(this, 'error'));
    this._filter.on('complete', this._complete.bind(this));

    this._inflate.pipe(this._filter);
  }
  this._inflate.write(data);
};

ParserAsync.prototype._handleMetaData = function(metaData) {

  this.emit('metadata', metaData);

  this._bitmapInfo = Object.create(metaData);

  this._filter = new FilterAsync(this._bitmapInfo);
};

ParserAsync.prototype._handleTransColor = function(transColor) {
  this._bitmapInfo.transColor = transColor;
};

ParserAsync.prototype._handlePalette = function(palette) {
  this._bitmapInfo.palette = palette;
};


ParserAsync.prototype._finished = function() {
  if (this.errord) {
    return;
  }

  if (!this._inflate) {
    this.emit('error', 'No Inflate block');
  }
  else {
    // no more data to inflate
    this._inflate.end();
  }
  this.destroySoon();
};

ParserAsync.prototype._complete = function(filteredData) {

  if (this.errord) {
    return;
  }

  try {
    var bitmapData = bitmapper.dataToBitMap(filteredData, this._bitmapInfo);

    var normalisedBitmapData = formatNormaliser(bitmapData, this._bitmapInfo);
    bitmapData = null;
  }
  catch (ex) {
    this._handleError(ex);
    return;
  }

  this.emit('parsed', normalisedBitmapData);
};

},{"./bitmapper":898,"./chunkstream":900,"./filter-parse-async":904,"./format-normaliser":907,"./parser":915,"util":1001,"zlib":45}],914:[function(require,module,exports){
(function (Buffer){
'use strict';

var hasSyncZlib = true;
var zlib = require('zlib');
if (!zlib.deflateSync) {
  hasSyncZlib = false;
}
var SyncReader = require('./sync-reader');
var FilterSync = require('./filter-parse-sync');
var Parser = require('./parser');
var bitmapper = require('./bitmapper');
var formatNormaliser = require('./format-normaliser');


module.exports = function(buffer, options) {

  if (!hasSyncZlib) {
    throw new Error('To use the sync capability of this library in old node versions, please also add a dependency on node-zlb-backport');
  }

  var err;
  function handleError(_err_) {
    err = _err_;
  }

  var metaData;
  function handleMetaData(_metaData_) {
    metaData = _metaData_;
  }

  function handleTransColor(transColor) {
    metaData.transColor = transColor;
  }

  function handlePalette(palette) {
    metaData.palette = palette;
  }

  var gamma;
  function handleGamma(_gamma_) {
    gamma = _gamma_;
  }

  var inflateDataList = [];
  function handleInflateData(inflatedData) {
    inflateDataList.push(inflatedData);
  }

  var reader = new SyncReader(buffer);

  var parser = new Parser(options, {
    read: reader.read.bind(reader),
    error: handleError,
    metadata: handleMetaData,
    gamma: handleGamma,
    palette: handlePalette,
    transColor: handleTransColor,
    inflateData: handleInflateData
  });

  parser.start();
  reader.process();

  if (err) {
    throw err;
  }

  //join together the inflate datas
  var inflateData = Buffer.concat(inflateDataList);
  inflateDataList.length = 0;

  var inflatedData = zlib.inflateSync(inflateData);
  inflateData = null;

  if (!inflatedData || !inflatedData.length) {
    throw new Error('bad png - invalid inflate data response');
  }

  var unfilteredData = FilterSync.process(inflatedData, metaData);
  inflateData = null;

  var bitmapData = bitmapper.dataToBitMap(unfilteredData, metaData);
  unfilteredData = null;

  var normalisedBitmapData = formatNormaliser(bitmapData, metaData);

  metaData.data = normalisedBitmapData;
  metaData.gamma = gamma || 0;

  return metaData;
};

}).call(this,require("buffer").Buffer)
},{"./bitmapper":898,"./filter-parse-sync":905,"./format-normaliser":907,"./parser":915,"./sync-reader":918,"buffer":46,"zlib":45}],915:[function(require,module,exports){
(function (Buffer){
'use strict';

var constants = require('./constants');
var CrcCalculator = require('./crc');


var Parser = module.exports = function(options, dependencies) {

  this._options = options;
  options.checkCRC = options.checkCRC !== false;

  this._hasIHDR = false;
  this._hasIEND = false;

  // input flags/metadata
  this._palette = [];
  this._colorType = 0;

  this._chunks = {};
  this._chunks[constants.TYPE_IHDR] = this._handleIHDR.bind(this);
  this._chunks[constants.TYPE_IEND] = this._handleIEND.bind(this);
  this._chunks[constants.TYPE_IDAT] = this._handleIDAT.bind(this);
  this._chunks[constants.TYPE_PLTE] = this._handlePLTE.bind(this);
  this._chunks[constants.TYPE_tRNS] = this._handleTRNS.bind(this);
  this._chunks[constants.TYPE_gAMA] = this._handleGAMA.bind(this);

  this.read = dependencies.read;
  this.error = dependencies.error;
  this.metadata = dependencies.metadata;
  this.gamma = dependencies.gamma;
  this.transColor = dependencies.transColor;
  this.palette = dependencies.palette;
  this.parsed = dependencies.parsed;
  this.inflateData = dependencies.inflateData;
  this.inflateData = dependencies.inflateData;
  this.finished = dependencies.finished;
};

Parser.prototype.start = function() {
  this.read(constants.PNG_SIGNATURE.length,
    this._parseSignature.bind(this)
  );
};

Parser.prototype._parseSignature = function(data) {

  var signature = constants.PNG_SIGNATURE;

  for (var i = 0; i < signature.length; i++) {
    if (data[i] !== signature[i]) {
      this.error(new Error('Invalid file signature'));
      return;
    }
  }
  this.read(8, this._parseChunkBegin.bind(this));
};

Parser.prototype._parseChunkBegin = function(data) {

  // chunk content length
  var length = data.readUInt32BE(0);

  // chunk type
  var type = data.readUInt32BE(4);
  var name = '';
  for (var i = 4; i < 8; i++) {
    name += String.fromCharCode(data[i]);
  }

  //console.log('chunk ', name, length);

  // chunk flags
  var ancillary = Boolean(data[4] & 0x20); // or critical
//    priv = Boolean(data[5] & 0x20), // or public
//    safeToCopy = Boolean(data[7] & 0x20); // or unsafe

  if (!this._hasIHDR && type !== constants.TYPE_IHDR) {
    this.error(new Error('Expected IHDR on beggining'));
    return;
  }

  this._crc = new CrcCalculator();
  this._crc.write(new Buffer(name));

  if (this._chunks[type]) {
    return this._chunks[type](length);
  }

  if (!ancillary) {
    this.error(new Error('Unsupported critical chunk type ' + name));
    return;
  }

  this.read(length + 4, this._skipChunk.bind(this));
};

Parser.prototype._skipChunk = function(/*data*/) {
  this.read(8, this._parseChunkBegin.bind(this));
};

Parser.prototype._handleChunkEnd = function() {
  this.read(4, this._parseChunkEnd.bind(this));
};

Parser.prototype._parseChunkEnd = function(data) {

  var fileCrc = data.readInt32BE(0);
  var calcCrc = this._crc.crc32();

  // check CRC
  if (this._options.checkCRC && calcCrc !== fileCrc) {
    this.error(new Error('Crc error - ' + fileCrc + ' - ' + calcCrc));
    return;
  }

  if (!this._hasIEND) {
    this.read(8, this._parseChunkBegin.bind(this));
  }
};

Parser.prototype._handleIHDR = function(length) {
  this.read(length, this._parseIHDR.bind(this));
};
Parser.prototype._parseIHDR = function(data) {

  this._crc.write(data);

  var width = data.readUInt32BE(0);
  var height = data.readUInt32BE(4);
  var depth = data[8];
  var colorType = data[9]; // bits: 1 palette, 2 color, 4 alpha
  var compr = data[10];
  var filter = data[11];
  var interlace = data[12];

  // console.log('    width', width, 'height', height,
  //     'depth', depth, 'colorType', colorType,
  //     'compr', compr, 'filter', filter, 'interlace', interlace
  // );

  if (depth !== 8 && depth !== 4 && depth !== 2 && depth !== 1 && depth !== 16) {
    this.error(new Error('Unsupported bit depth ' + depth));
    return;
  }
  if (!(colorType in constants.COLORTYPE_TO_BPP_MAP)) {
    this.error(new Error('Unsupported color type'));
    return;
  }
  if (compr !== 0) {
    this.error(new Error('Unsupported compression method'));
    return;
  }
  if (filter !== 0) {
    this.error(new Error('Unsupported filter method'));
    return;
  }
  if (interlace !== 0 && interlace !== 1) {
    this.error(new Error('Unsupported interlace method'));
    return;
  }

  this._colorType = colorType;

  var bpp = constants.COLORTYPE_TO_BPP_MAP[this._colorType];

  this._hasIHDR = true;

  this.metadata({
    width: width,
    height: height,
    depth: depth,
    interlace: Boolean(interlace),
    palette: Boolean(colorType & constants.COLORTYPE_PALETTE),
    color: Boolean(colorType & constants.COLORTYPE_COLOR),
    alpha: Boolean(colorType & constants.COLORTYPE_ALPHA),
    bpp: bpp,
    colorType: colorType
  });

  this._handleChunkEnd();
};


Parser.prototype._handlePLTE = function(length) {
  this.read(length, this._parsePLTE.bind(this));
};
Parser.prototype._parsePLTE = function(data) {

  this._crc.write(data);

  var entries = Math.floor(data.length / 3);
  // console.log('Palette:', entries);

  for (var i = 0; i < entries; i++) {
    this._palette.push([
      data[i * 3],
      data[i * 3 + 1],
      data[i * 3 + 2],
      0xff
    ]);
  }

  this.palette(this._palette);

  this._handleChunkEnd();
};

Parser.prototype._handleTRNS = function(length) {
  this.read(length, this._parseTRNS.bind(this));
};
Parser.prototype._parseTRNS = function(data) {

  this._crc.write(data);

  // palette
  if (this._colorType === constants.COLORTYPE_PALETTE_COLOR) {
    if (this._palette.length === 0) {
      this.error(new Error('Transparency chunk must be after palette'));
      return;
    }
    if (data.length > this._palette.length) {
      this.error(new Error('More transparent colors than palette size'));
      return;
    }
    for (var i = 0; i < data.length; i++) {
      this._palette[i][3] = data[i];
    }
    this.palette(this._palette);
  }

  // for colorType 0 (grayscale) and 2 (rgb)
  // there might be one gray/color defined as transparent
  if (this._colorType === constants.COLORTYPE_GRAYSCALE) {
    // grey, 2 bytes
    this.transColor([data.readUInt16BE(0)]);
  }
  if (this._colorType === constants.COLORTYPE_COLOR) {
    this.transColor([data.readUInt16BE(0), data.readUInt16BE(2), data.readUInt16BE(4)]);
  }

  this._handleChunkEnd();
};

Parser.prototype._handleGAMA = function(length) {
  this.read(length, this._parseGAMA.bind(this));
};
Parser.prototype._parseGAMA = function(data) {

  this._crc.write(data);
  this.gamma(data.readUInt32BE(0) / constants.GAMMA_DIVISION);

  this._handleChunkEnd();
};

Parser.prototype._handleIDAT = function(length) {
  this.read(-length, this._parseIDAT.bind(this, length));
};
Parser.prototype._parseIDAT = function(length, data) {

  this._crc.write(data);

  if (this._colorType === constants.COLORTYPE_PALETTE_COLOR && this._palette.length === 0) {
    throw new Error('Expected palette not found');
  }

  this.inflateData(data);
  var leftOverLength = length - data.length;

  if (leftOverLength > 0) {
    this._handleIDAT(leftOverLength);
  }
  else {
    this._handleChunkEnd();
  }
};

Parser.prototype._handleIEND = function(length) {
  this.read(length, this._parseIEND.bind(this));
};
Parser.prototype._parseIEND = function(data) {

  this._crc.write(data);

  this._hasIEND = true;
  this._handleChunkEnd();

  if (this.finished) {
    this.finished();
  }
};

}).call(this,require("buffer").Buffer)
},{"./constants":901,"./crc":902,"buffer":46}],916:[function(require,module,exports){
'use strict';


var parse = require('./parser-sync');
var pack = require('./packer-sync');


exports.read = function(buffer, options) {

  return parse(buffer, options || {});
};

exports.write = function(png) {

  return pack(png);
};

},{"./packer-sync":910,"./parser-sync":914}],917:[function(require,module,exports){
(function (process,Buffer){
'use strict';

var util = require('util');
var Stream = require('stream');
var Parser = require('./parser-async');
var Packer = require('./packer-async');
var PNGSync = require('./png-sync');


var PNG = exports.PNG = function(options) {
  Stream.call(this);

  options = options || {}; // eslint-disable-line no-param-reassign

  this.width = options.width || 0;
  this.height = options.height || 0;

  this.data = this.width > 0 && this.height > 0 ?
    new Buffer(4 * this.width * this.height) : null;

  if (options.fill && this.data) {
    this.data.fill(0);
  }

  this.gamma = 0;
  this.readable = this.writable = true;

  this._parser = new Parser(options);

  this._parser.on('error', this.emit.bind(this, 'error'));
  this._parser.on('close', this._handleClose.bind(this));
  this._parser.on('metadata', this._metadata.bind(this));
  this._parser.on('gamma', this._gamma.bind(this));
  this._parser.on('parsed', function(data) {
    this.data = data;
    this.emit('parsed', data);
  }.bind(this));

  this._packer = new Packer(options);
  this._packer.on('data', this.emit.bind(this, 'data'));
  this._packer.on('end', this.emit.bind(this, 'end'));
  this._parser.on('close', this._handleClose.bind(this));
  this._packer.on('error', this.emit.bind(this, 'error'));

};
util.inherits(PNG, Stream);

PNG.sync = PNGSync;

PNG.prototype.pack = function() {

  if (!this.data || !this.data.length) {
    this.emit('error', 'No data provided');
    return this;
  }

  process.nextTick(function() {
    this._packer.pack(this.data, this.width, this.height, this.gamma);
  }.bind(this));

  return this;
};


PNG.prototype.parse = function(data, callback) {

  if (callback) {
    var onParsed, onError;

    onParsed = function(parsedData) {
      this.removeListener('error', onError);

      this.data = parsedData;
      callback(null, this);
    }.bind(this);

    onError = function(err) {
      this.removeListener('parsed', onParsed);

      callback(err, null);
    }.bind(this);

    this.once('parsed', onParsed);
    this.once('error', onError);
  }

  this.end(data);
  return this;
};

PNG.prototype.write = function(data) {
  this._parser.write(data);
  return true;
};

PNG.prototype.end = function(data) {
  this._parser.end(data);
};

PNG.prototype._metadata = function(metadata) {
  this.width = metadata.width;
  this.height = metadata.height;

  this.emit('metadata', metadata);
};

PNG.prototype._gamma = function(gamma) {
  this.gamma = gamma;
};

PNG.prototype._handleClose = function() {
  if (!this._parser.writable && !this._packer.readable) {
    this.emit('close');
  }
};


PNG.bitblt = function(src, dst, srcX, srcY, width, height, deltaX, deltaY) { // eslint-disable-line max-params

  if (srcX > src.width || srcY > src.height || srcX + width > src.width || srcY + height > src.height) {
    throw new Error('bitblt reading outside image');
  }

  if (deltaX > dst.width || deltaY > dst.height || deltaX + width > dst.width || deltaY + height > dst.height) {
    throw new Error('bitblt writing outside image');
  }

  for (var y = 0; y < height; y++) {
    src.data.copy(dst.data,
      ((deltaY + y) * dst.width + deltaX) << 2,
      ((srcY + y) * src.width + srcX) << 2,
      ((srcY + y) * src.width + srcX + width) << 2
    );
  }
};


PNG.prototype.bitblt = function(dst, srcX, srcY, width, height, deltaX, deltaY) { // eslint-disable-line max-params

  PNG.bitblt(this, dst, srcX, srcY, width, height, deltaX, deltaY);
  return this;
};

PNG.adjustGamma = function(src) {
  if (src.gamma) {
    for (var y = 0; y < src.height; y++) {
      for (var x = 0; x < src.width; x++) {
        var idx = (src.width * y + x) << 2;

        for (var i = 0; i < 3; i++) {
          var sample = src.data[idx + i] / 255;
          sample = Math.pow(sample, 1 / 2.2 / src.gamma);
          src.data[idx + i] = Math.round(sample * 255);
        }
      }
    }
    src.gamma = 0;
  }
};

PNG.prototype.adjustGamma = function() {
  PNG.adjustGamma(this);
};

}).call(this,require('_process'),require("buffer").Buffer)
},{"./packer-async":909,"./parser-async":913,"./png-sync":916,"_process":923,"buffer":46,"stream":978,"util":1001}],918:[function(require,module,exports){
'use strict';

var SyncReader = module.exports = function(buffer) {

  this._buffer = buffer;
  this._reads = [];
};

SyncReader.prototype.read = function(length, callback) {

  this._reads.push({
    length: Math.abs(length),  // if length < 0 then at most this length
    allowLess: length < 0,
    func: callback
  });
};

SyncReader.prototype.process = function() {

  // as long as there is any data and read requests
  while (this._reads.length > 0 && this._buffer.length) {

    var read = this._reads[0];

    if (this._buffer.length && (this._buffer.length >= read.length || read.allowLess)) {

      // ok there is any data so that we can satisfy this request
      this._reads.shift(); // == read

      var buf = this._buffer;

      this._buffer = buf.slice(read.length);

      read.func.call(this, buf.slice(0, read.length));

    }
    else {
      break;
    }

  }

  if (this._reads.length > 0) {
    return new Error('There are some read requests waitng on finished stream');
  }

  if (this._buffer.length > 0) {
    return new Error('unrecognised content at end of stream');
  }

};

},{}],919:[function(require,module,exports){
'use strict';

module.exports = Point;

function Point(x, y) {
    this.x = x;
    this.y = y;
}

Point.prototype = {
    clone: function() { return new Point(this.x, this.y); },

    add:     function(p) { return this.clone()._add(p);     },
    sub:     function(p) { return this.clone()._sub(p);     },
    mult:    function(k) { return this.clone()._mult(k);    },
    div:     function(k) { return this.clone()._div(k);     },
    rotate:  function(a) { return this.clone()._rotate(a);  },
    matMult: function(m) { return this.clone()._matMult(m); },
    unit:    function() { return this.clone()._unit(); },
    perp:    function() { return this.clone()._perp(); },
    round:   function() { return this.clone()._round(); },

    mag: function() {
        return Math.sqrt(this.x * this.x + this.y * this.y);
    },

    equals: function(p) {
        return this.x === p.x &&
               this.y === p.y;
    },

    dist: function(p) {
        return Math.sqrt(this.distSqr(p));
    },

    distSqr: function(p) {
        var dx = p.x - this.x,
            dy = p.y - this.y;
        return dx * dx + dy * dy;
    },

    angle: function() {
        return Math.atan2(this.y, this.x);
    },

    angleTo: function(b) {
        return Math.atan2(this.y - b.y, this.x - b.x);
    },

    angleWith: function(b) {
        return this.angleWithSep(b.x, b.y);
    },

    // Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.
    angleWithSep: function(x, y) {
        return Math.atan2(
            this.x * y - this.y * x,
            this.x * x + this.y * y);
    },

    _matMult: function(m) {
        var x = m[0] * this.x + m[1] * this.y,
            y = m[2] * this.x + m[3] * this.y;
        this.x = x;
        this.y = y;
        return this;
    },

    _add: function(p) {
        this.x += p.x;
        this.y += p.y;
        return this;
    },

    _sub: function(p) {
        this.x -= p.x;
        this.y -= p.y;
        return this;
    },

    _mult: function(k) {
        this.x *= k;
        this.y *= k;
        return this;
    },

    _div: function(k) {
        this.x /= k;
        this.y /= k;
        return this;
    },

    _unit: function() {
        this._div(this.mag());
        return this;
    },

    _perp: function() {
        var y = this.y;
        this.y = this.x;
        this.x = -y;
        return this;
    },

    _rotate: function(angle) {
        var cos = Math.cos(angle),
            sin = Math.sin(angle),
            x = cos * this.x - sin * this.y,
            y = sin * this.x + cos * this.y;
        this.x = x;
        this.y = y;
        return this;
    },

    _round: function() {
        this.x = Math.round(this.x);
        this.y = Math.round(this.y);
        return this;
    }
};

// constructs Point from an array if necessary
Point.convert = function (a) {
    if (a instanceof Point) {
        return a;
    }
    if (Array.isArray(a)) {
        return new Point(a[0], a[1]);
    }
    return a;
};

},{}],920:[function(require,module,exports){
module.exports = preprocessPolygon

var orient = require('robust-orientation')[3]
var makeSlabs = require('slab-decomposition')
var makeIntervalTree = require('interval-tree-1d')
var bsearch = require('binary-search-bounds')

function visitInterval() {
  return true
}

function intervalSearch(table) {
  return function(x, y) {
    var tree = table[x]
    if(tree) {
      return !!tree.queryPoint(y, visitInterval)
    }
    return false
  }
}

function buildVerticalIndex(segments) {
  var table = {}
  for(var i=0; i<segments.length; ++i) {
    var s = segments[i]
    var x = s[0][0]
    var y0 = s[0][1]
    var y1 = s[1][1]
    var p = [ Math.min(y0, y1), Math.max(y0, y1) ]
    if(x in table) {
      table[x].push(p)
    } else {
      table[x] = [ p ]
    }
  }
  var intervalTable = {}
  var keys = Object.keys(table)
  for(var i=0; i<keys.length; ++i) {
    var segs = table[keys[i]]
    intervalTable[keys[i]] = makeIntervalTree(segs)
  }
  return intervalSearch(intervalTable)
}

function buildSlabSearch(slabs, coordinates) {
  return function(p) {
    var bucket = bsearch.le(coordinates, p[0])
    if(bucket < 0) {
      return 1
    }
    var root = slabs[bucket]
    if(!root) {
      if(bucket > 0 && coordinates[bucket] === p[0]) {
        root = slabs[bucket-1]
      } else {
        return 1
      }
    }
    var lastOrientation = 1
    while(root) {
      var s = root.key
      var o = orient(p, s[0], s[1])
      if(s[0][0] < s[1][0]) {
        if(o < 0) {
          root = root.left
        } else if(o > 0) {
          lastOrientation = -1
          root = root.right
        } else {
          return 0
        }
      } else {
        if(o > 0) {
          root = root.left
        } else if(o < 0) {
          lastOrientation = 1
          root = root.right
        } else {
          return 0
        }
      }
    }
    return lastOrientation
  }
}

function classifyEmpty(p) {
  return 1
}

function createClassifyVertical(testVertical) {
  return function classify(p) {
    if(testVertical(p[0], p[1])) {
      return 0
    }
    return 1
  }
}

function createClassifyPointDegen(testVertical, testNormal) {
  return function classify(p) {
    if(testVertical(p[0], p[1])) {
      return 0
    }
    return testNormal(p)
  }
}

function preprocessPolygon(loops) {
  //Compute number of loops
  var numLoops = loops.length

  //Unpack segments
  var segments = []
  var vsegments = []
  var ptr = 0
  for(var i=0; i<numLoops; ++i) {
    var loop = loops[i]
    var numVertices = loop.length
    for(var s=numVertices-1,t=0; t<numVertices; s=(t++)) {
      var a = loop[s]
      var b = loop[t]
      if(a[0] === b[0]) {
        vsegments.push([a,b])
      } else {
        segments.push([a,b])
      }
    }
  }

  //Degenerate case: All loops are empty
  if(segments.length === 0) {
    if(vsegments.length === 0) {
      return classifyEmpty
    } else {
      return createClassifyVertical(buildVerticalIndex(vsegments))
    }
  }

  //Build slab decomposition
  var slabs = makeSlabs(segments)
  var testSlab = buildSlabSearch(slabs.slabs, slabs.coordinates)

  if(vsegments.length === 0) {
    return testSlab
  } else {
    return createClassifyPointDegen(
      buildVerticalIndex(vsegments),
      testSlab)
  }
}
},{"binary-search-bounds":32,"interval-tree-1d":267,"robust-orientation":954,"slab-decomposition":975}],921:[function(require,module,exports){
//Optimized version for triangle closest point
// Based on Eberly's WildMagick codes
// http://www.geometrictools.com/LibMathematics/Distance/Distance.html
"use strict";

var diff = new Float64Array(4);
var edge0 = new Float64Array(4);
var edge1 = new Float64Array(4);

function closestPoint2d(V0, V1, V2, point, result) {
  //Reallocate buffers if necessary
  if(diff.length < point.length) {
    diff = new Float64Array(point.length);
    edge0 = new Float64Array(point.length);
    edge1 = new Float64Array(point.length);
  }
  //Compute edges
  for(var i=0; i<point.length; ++i) {
    diff[i]  = V0[i] - point[i];
    edge0[i] = V1[i] - V0[i];
    edge1[i] = V2[i] - V0[i];
  }
  //Compute coefficients for quadratic func
  var a00 = 0.0
    , a01 = 0.0
    , a11 = 0.0
    , b0  = 0.0
    , b1  = 0.0
    , c   = 0.0;
  for(var i=0; i<point.length; ++i) {
    var e0 = edge0[i]
      , e1 = edge1[i]
      , d  = diff[i];
    a00 += e0 * e0;
    a01 += e0 * e1;
    a11 += e1 * e1;
    b0  += d * e0;
    b1  += d * e1;
    c   += d * d;
  }
  //Compute determinant/coeffs
  var det = Math.abs(a00*a11 - a01*a01);
  var s   = a01*b1 - a11*b0;
  var t   = a01*b0 - a00*b1;
  var sqrDistance;
  //Hardcoded Voronoi diagram classification
  if (s + t <= det) {
    if (s < 0) {
      if (t < 0) { // region 4
        if (b0 < 0) {
          t = 0;
          if (-b0 >= a00) {
            s = 1.0;
            sqrDistance = a00 + 2.0*b0 + c;
          } else {
            s = -b0/a00;
            sqrDistance = b0*s + c;
          }
        } else {
          s = 0;
          if (b1 >= 0) {
            t = 0;
            sqrDistance = c;
          } else if (-b1 >= a11) {
            t = 1;
            sqrDistance = a11 + 2.0*b1 + c;
          } else {
            t = -b1/a11;
            sqrDistance = b1*t + c;
          }
        }
      } else {  // region 3
        s = 0;
        if (b1 >= 0) {
          t = 0;
          sqrDistance = c;
        } else if (-b1 >= a11) {
          t = 1;
          sqrDistance = a11 + 2.0*b1 + c;
        } else {
          t = -b1/a11;
          sqrDistance = b1*t + c;
        }
      }
    } else if (t < 0) { // region 5
      t = 0;
      if (b0 >= 0) {
        s = 0;
        sqrDistance = c;
      } else if (-b0 >= a00) {
        s = 1;
        sqrDistance = a00 + 2.0*b0 + c;
      } else {
        s = -b0/a00;
        sqrDistance = b0*s + c;
      }
    } else {  // region 0
      // minimum at interior point
      var invDet = 1.0 / det;
      s *= invDet;
      t *= invDet;
      sqrDistance = s*(a00*s + a01*t + 2.0*b0) + t*(a01*s + a11*t + 2.0*b1) + c;
    }
  } else {
    var tmp0, tmp1, numer, denom;
    
    if (s < 0) {  // region 2
      tmp0 = a01 + b0;
      tmp1 = a11 + b1;
      if (tmp1 > tmp0) {
        numer = tmp1 - tmp0;
        denom = a00 - 2.0*a01 + a11;
        if (numer >= denom) {
          s = 1;
          t = 0;
          sqrDistance = a00 + 2.0*b0 + c;
        } else {
          s = numer/denom;
          t = 1 - s;
          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
          t*(a01*s + a11*t + 2.0*b1) + c;
        }
      } else {
        s = 0;
        if (tmp1 <= 0) {
          t = 1;
          sqrDistance = a11 + 2.0*b1 + c;
        } else if (b1 >= 0) {
          t = 0;
          sqrDistance = c;
        } else {
          t = -b1/a11;
          sqrDistance = b1*t + c;
        }
      }
    } else if (t < 0) {  // region 6
      tmp0 = a01 + b1;
      tmp1 = a00 + b0;
      if (tmp1 > tmp0) {
        numer = tmp1 - tmp0;
        denom = a00 - 2.0*a01 + a11;
        if (numer >= denom) {
          t = 1;
          s = 0;
          sqrDistance = a11 + 2.0*b1 + c;
        } else {
          t = numer/denom;
          s = 1 - t;
          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
          t*(a01*s + a11*t + 2.0*b1) + c;
        }
      } else {
        t = 0;
        if (tmp1 <= 0) {
          s = 1;
          sqrDistance = a00 + 2.0*b0 + c;
        } else if (b0 >= 0) {
          s = 0;
          sqrDistance = c;
        } else {
          s = -b0/a00;
          sqrDistance = b0*s + c;
        }
      }
    } else {  // region 1
      numer = a11 + b1 - a01 - b0;
      if (numer <= 0) {
        s = 0;
        t = 1;
        sqrDistance = a11 + 2.0*b1 + c;
      } else {
        denom = a00 - 2.0*a01 + a11;
        if (numer >= denom) {
          s = 1;
          t = 0;
          sqrDistance = a00 + 2.0*b0 + c;
        } else {
          s = numer/denom;
          t = 1 - s;
          sqrDistance = s*(a00*s + a01*t + 2.0*b0) +
          t*(a01*s + a11*t + 2.0*b1) + c;
        }
      }
    }
  }
  var u = 1.0 - s - t;
  for(var i=0; i<point.length; ++i) {
    result[i] = u * V0[i] + s * V1[i] + t * V2[i];
  }
  if(sqrDistance < 0) {
    return 0;
  }
  return sqrDistance;
}

module.exports = closestPoint2d;

},{}],922:[function(require,module,exports){
(function (process){
'use strict';

if (!process.version ||
    process.version.indexOf('v0.') === 0 ||
    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
  module.exports = nextTick;
} else {
  module.exports = process.nextTick;
}

function nextTick(fn, arg1, arg2, arg3) {
  if (typeof fn !== 'function') {
    throw new TypeError('"callback" argument must be a function');
  }
  var len = arguments.length;
  var args, i;
  switch (len) {
  case 0:
  case 1:
    return process.nextTick(fn);
  case 2:
    return process.nextTick(function afterTickOne() {
      fn.call(null, arg1);
    });
  case 3:
    return process.nextTick(function afterTickTwo() {
      fn.call(null, arg1, arg2);
    });
  case 4:
    return process.nextTick(function afterTickThree() {
      fn.call(null, arg1, arg2, arg3);
    });
  default:
    args = new Array(len - 1);
    i = 0;
    while (i < args.length) {
      args[i++] = arguments[i];
    }
    return process.nextTick(function afterTick() {
      fn.apply(null, args);
    });
  }
}

}).call(this,require('_process'))
},{"_process":923}],923:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],924:[function(require,module,exports){
(function (global){
/*! https://mths.be/punycode v1.4.1 by @mathias */
;(function(root) {

	/** Detect free variables */
	var freeExports = typeof exports == 'object' && exports &&
		!exports.nodeType && exports;
	var freeModule = typeof module == 'object' && module &&
		!module.nodeType && module;
	var freeGlobal = typeof global == 'object' && global;
	if (
		freeGlobal.global === freeGlobal ||
		freeGlobal.window === freeGlobal ||
		freeGlobal.self === freeGlobal
	) {
		root = freeGlobal;
	}

	/**
	 * The `punycode` object.
	 * @name punycode
	 * @type Object
	 */
	var punycode,

	/** Highest positive signed 32-bit float value */
	maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1

	/** Bootstring parameters */
	base = 36,
	tMin = 1,
	tMax = 26,
	skew = 38,
	damp = 700,
	initialBias = 72,
	initialN = 128, // 0x80
	delimiter = '-', // '\x2D'

	/** Regular expressions */
	regexPunycode = /^xn--/,
	regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
	regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators

	/** Error messages */
	errors = {
		'overflow': 'Overflow: input needs wider integers to process',
		'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
		'invalid-input': 'Invalid input'
	},

	/** Convenience shortcuts */
	baseMinusTMin = base - tMin,
	floor = Math.floor,
	stringFromCharCode = String.fromCharCode,

	/** Temporary variable */
	key;

	/*--------------------------------------------------------------------------*/

	/**
	 * A generic error utility function.
	 * @private
	 * @param {String} type The error type.
	 * @returns {Error} Throws a `RangeError` with the applicable error message.
	 */
	function error(type) {
		throw new RangeError(errors[type]);
	}

	/**
	 * A generic `Array#map` utility function.
	 * @private
	 * @param {Array} array The array to iterate over.
	 * @param {Function} callback The function that gets called for every array
	 * item.
	 * @returns {Array} A new array of values returned by the callback function.
	 */
	function map(array, fn) {
		var length = array.length;
		var result = [];
		while (length--) {
			result[length] = fn(array[length]);
		}
		return result;
	}

	/**
	 * A simple `Array#map`-like wrapper to work with domain name strings or email
	 * addresses.
	 * @private
	 * @param {String} domain The domain name or email address.
	 * @param {Function} callback The function that gets called for every
	 * character.
	 * @returns {Array} A new string of characters returned by the callback
	 * function.
	 */
	function mapDomain(string, fn) {
		var parts = string.split('@');
		var result = '';
		if (parts.length > 1) {
			// In email addresses, only the domain name should be punycoded. Leave
			// the local part (i.e. everything up to `@`) intact.
			result = parts[0] + '@';
			string = parts[1];
		}
		// Avoid `split(regex)` for IE8 compatibility. See #17.
		string = string.replace(regexSeparators, '\x2E');
		var labels = string.split('.');
		var encoded = map(labels, fn).join('.');
		return result + encoded;
	}

	/**
	 * Creates an array containing the numeric code points of each Unicode
	 * character in the string. While JavaScript uses UCS-2 internally,
	 * this function will convert a pair of surrogate halves (each of which
	 * UCS-2 exposes as separate characters) into a single code point,
	 * matching UTF-16.
	 * @see `punycode.ucs2.encode`
	 * @see <https://mathiasbynens.be/notes/javascript-encoding>
	 * @memberOf punycode.ucs2
	 * @name decode
	 * @param {String} string The Unicode input string (UCS-2).
	 * @returns {Array} The new array of code points.
	 */
	function ucs2decode(string) {
		var output = [],
		    counter = 0,
		    length = string.length,
		    value,
		    extra;
		while (counter < length) {
			value = string.charCodeAt(counter++);
			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
				// high surrogate, and there is a next character
				extra = string.charCodeAt(counter++);
				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
				} else {
					// unmatched surrogate; only append this code unit, in case the next
					// code unit is the high surrogate of a surrogate pair
					output.push(value);
					counter--;
				}
			} else {
				output.push(value);
			}
		}
		return output;
	}

	/**
	 * Creates a string based on an array of numeric code points.
	 * @see `punycode.ucs2.decode`
	 * @memberOf punycode.ucs2
	 * @name encode
	 * @param {Array} codePoints The array of numeric code points.
	 * @returns {String} The new Unicode string (UCS-2).
	 */
	function ucs2encode(array) {
		return map(array, function(value) {
			var output = '';
			if (value > 0xFFFF) {
				value -= 0x10000;
				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
				value = 0xDC00 | value & 0x3FF;
			}
			output += stringFromCharCode(value);
			return output;
		}).join('');
	}

	/**
	 * Converts a basic code point into a digit/integer.
	 * @see `digitToBasic()`
	 * @private
	 * @param {Number} codePoint The basic numeric code point value.
	 * @returns {Number} The numeric value of a basic code point (for use in
	 * representing integers) in the range `0` to `base - 1`, or `base` if
	 * the code point does not represent a value.
	 */
	function basicToDigit(codePoint) {
		if (codePoint - 48 < 10) {
			return codePoint - 22;
		}
		if (codePoint - 65 < 26) {
			return codePoint - 65;
		}
		if (codePoint - 97 < 26) {
			return codePoint - 97;
		}
		return base;
	}

	/**
	 * Converts a digit/integer into a basic code point.
	 * @see `basicToDigit()`
	 * @private
	 * @param {Number} digit The numeric value of a basic code point.
	 * @returns {Number} The basic code point whose value (when used for
	 * representing integers) is `digit`, which needs to be in the range
	 * `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
	 * used; else, the lowercase form is used. The behavior is undefined
	 * if `flag` is non-zero and `digit` has no uppercase form.
	 */
	function digitToBasic(digit, flag) {
		//  0..25 map to ASCII a..z or A..Z
		// 26..35 map to ASCII 0..9
		return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5);
	}

	/**
	 * Bias adaptation function as per section 3.4 of RFC 3492.
	 * https://tools.ietf.org/html/rfc3492#section-3.4
	 * @private
	 */
	function adapt(delta, numPoints, firstTime) {
		var k = 0;
		delta = firstTime ? floor(delta / damp) : delta >> 1;
		delta += floor(delta / numPoints);
		for (/* no initialization */; delta > baseMinusTMin * tMax >> 1; k += base) {
			delta = floor(delta / baseMinusTMin);
		}
		return floor(k + (baseMinusTMin + 1) * delta / (delta + skew));
	}

	/**
	 * Converts a Punycode string of ASCII-only symbols to a string of Unicode
	 * symbols.
	 * @memberOf punycode
	 * @param {String} input The Punycode string of ASCII-only symbols.
	 * @returns {String} The resulting string of Unicode symbols.
	 */
	function decode(input) {
		// Don't use UCS-2
		var output = [],
		    inputLength = input.length,
		    out,
		    i = 0,
		    n = initialN,
		    bias = initialBias,
		    basic,
		    j,
		    index,
		    oldi,
		    w,
		    k,
		    digit,
		    t,
		    /** Cached calculation results */
		    baseMinusT;

		// Handle the basic code points: let `basic` be the number of input code
		// points before the last delimiter, or `0` if there is none, then copy
		// the first basic code points to the output.

		basic = input.lastIndexOf(delimiter);
		if (basic < 0) {
			basic = 0;
		}

		for (j = 0; j < basic; ++j) {
			// if it's not a basic code point
			if (input.charCodeAt(j) >= 0x80) {
				error('not-basic');
			}
			output.push(input.charCodeAt(j));
		}

		// Main decoding loop: start just after the last delimiter if any basic code
		// points were copied; start at the beginning otherwise.

		for (index = basic > 0 ? basic + 1 : 0; index < inputLength; /* no final expression */) {

			// `index` is the index of the next character to be consumed.
			// Decode a generalized variable-length integer into `delta`,
			// which gets added to `i`. The overflow checking is easier
			// if we increase `i` as we go, then subtract off its starting
			// value at the end to obtain `delta`.
			for (oldi = i, w = 1, k = base; /* no condition */; k += base) {

				if (index >= inputLength) {
					error('invalid-input');
				}

				digit = basicToDigit(input.charCodeAt(index++));

				if (digit >= base || digit > floor((maxInt - i) / w)) {
					error('overflow');
				}

				i += digit * w;
				t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);

				if (digit < t) {
					break;
				}

				baseMinusT = base - t;
				if (w > floor(maxInt / baseMinusT)) {
					error('overflow');
				}

				w *= baseMinusT;

			}

			out = output.length + 1;
			bias = adapt(i - oldi, out, oldi == 0);

			// `i` was supposed to wrap around from `out` to `0`,
			// incrementing `n` each time, so we'll fix that now:
			if (floor(i / out) > maxInt - n) {
				error('overflow');
			}

			n += floor(i / out);
			i %= out;

			// Insert `n` at position `i` of the output
			output.splice(i++, 0, n);

		}

		return ucs2encode(output);
	}

	/**
	 * Converts a string of Unicode symbols (e.g. a domain name label) to a
	 * Punycode string of ASCII-only symbols.
	 * @memberOf punycode
	 * @param {String} input The string of Unicode symbols.
	 * @returns {String} The resulting Punycode string of ASCII-only symbols.
	 */
	function encode(input) {
		var n,
		    delta,
		    handledCPCount,
		    basicLength,
		    bias,
		    j,
		    m,
		    q,
		    k,
		    t,
		    currentValue,
		    output = [],
		    /** `inputLength` will hold the number of code points in `input`. */
		    inputLength,
		    /** Cached calculation results */
		    handledCPCountPlusOne,
		    baseMinusT,
		    qMinusT;

		// Convert the input in UCS-2 to Unicode
		input = ucs2decode(input);

		// Cache the length
		inputLength = input.length;

		// Initialize the state
		n = initialN;
		delta = 0;
		bias = initialBias;

		// Handle the basic code points
		for (j = 0; j < inputLength; ++j) {
			currentValue = input[j];
			if (currentValue < 0x80) {
				output.push(stringFromCharCode(currentValue));
			}
		}

		handledCPCount = basicLength = output.length;

		// `handledCPCount` is the number of code points that have been handled;
		// `basicLength` is the number of basic code points.

		// Finish the basic string - if it is not empty - with a delimiter
		if (basicLength) {
			output.push(delimiter);
		}

		// Main encoding loop:
		while (handledCPCount < inputLength) {

			// All non-basic code points < n have been handled already. Find the next
			// larger one:
			for (m = maxInt, j = 0; j < inputLength; ++j) {
				currentValue = input[j];
				if (currentValue >= n && currentValue < m) {
					m = currentValue;
				}
			}

			// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
			// but guard against overflow
			handledCPCountPlusOne = handledCPCount + 1;
			if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
				error('overflow');
			}

			delta += (m - n) * handledCPCountPlusOne;
			n = m;

			for (j = 0; j < inputLength; ++j) {
				currentValue = input[j];

				if (currentValue < n && ++delta > maxInt) {
					error('overflow');
				}

				if (currentValue == n) {
					// Represent delta as a generalized variable-length integer
					for (q = delta, k = base; /* no condition */; k += base) {
						t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
						if (q < t) {
							break;
						}
						qMinusT = q - t;
						baseMinusT = base - t;
						output.push(
							stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT, 0))
						);
						q = floor(qMinusT / baseMinusT);
					}

					output.push(stringFromCharCode(digitToBasic(q, 0)));
					bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
					delta = 0;
					++handledCPCount;
				}
			}

			++delta;
			++n;

		}
		return output.join('');
	}

	/**
	 * Converts a Punycode string representing a domain name or an email address
	 * to Unicode. Only the Punycoded parts of the input will be converted, i.e.
	 * it doesn't matter if you call it on a string that has already been
	 * converted to Unicode.
	 * @memberOf punycode
	 * @param {String} input The Punycoded domain name or email address to
	 * convert to Unicode.
	 * @returns {String} The Unicode representation of the given Punycode
	 * string.
	 */
	function toUnicode(input) {
		return mapDomain(input, function(string) {
			return regexPunycode.test(string)
				? decode(string.slice(4).toLowerCase())
				: string;
		});
	}

	/**
	 * Converts a Unicode string representing a domain name or an email address to
	 * Punycode. Only the non-ASCII parts of the domain name will be converted,
	 * i.e. it doesn't matter if you call it with a domain that's already in
	 * ASCII.
	 * @memberOf punycode
	 * @param {String} input The domain name or email address to convert, as a
	 * Unicode string.
	 * @returns {String} The Punycode representation of the given domain name or
	 * email address.
	 */
	function toASCII(input) {
		return mapDomain(input, function(string) {
			return regexNonASCII.test(string)
				? 'xn--' + encode(string)
				: string;
		});
	}

	/*--------------------------------------------------------------------------*/

	/** Define the public API */
	punycode = {
		/**
		 * A string representing the current Punycode.js version number.
		 * @memberOf punycode
		 * @type String
		 */
		'version': '1.4.1',
		/**
		 * An object of methods to convert from JavaScript's internal character
		 * representation (UCS-2) to Unicode code points, and back.
		 * @see <https://mathiasbynens.be/notes/javascript-encoding>
		 * @memberOf punycode
		 * @type Object
		 */
		'ucs2': {
			'decode': ucs2decode,
			'encode': ucs2encode
		},
		'decode': decode,
		'encode': encode,
		'toASCII': toASCII,
		'toUnicode': toUnicode
	};

	/** Expose `punycode` */
	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof define == 'function' &&
		typeof define.amd == 'object' &&
		define.amd
	) {
		define('punycode', function() {
			return punycode;
		});
	} else if (freeExports && freeModule) {
		if (module.exports == freeExports) {
			// in Node.js, io.js, or RingoJS v0.8.0+
			freeModule.exports = punycode;
		} else {
			// in Narwhal or RingoJS v0.7.0-
			for (key in punycode) {
				punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
			}
		}
	} else {
		// in Rhino or a web browser
		root.punycode = punycode;
	}

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],925:[function(require,module,exports){
module.exports = require('gl-quat/slerp')
},{"gl-quat/slerp":206}],926:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

// If obj.hasOwnProperty has been overridden, then calling
// obj.hasOwnProperty(prop) will break.
// See: https://github.com/joyent/node/issues/1707
function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

module.exports = function(qs, sep, eq, options) {
  sep = sep || '&';
  eq = eq || '=';
  var obj = {};

  if (typeof qs !== 'string' || qs.length === 0) {
    return obj;
  }

  var regexp = /\+/g;
  qs = qs.split(sep);

  var maxKeys = 1000;
  if (options && typeof options.maxKeys === 'number') {
    maxKeys = options.maxKeys;
  }

  var len = qs.length;
  // maxKeys <= 0 means that we should not limit keys count
  if (maxKeys > 0 && len > maxKeys) {
    len = maxKeys;
  }

  for (var i = 0; i < len; ++i) {
    var x = qs[i].replace(regexp, '%20'),
        idx = x.indexOf(eq),
        kstr, vstr, k, v;

    if (idx >= 0) {
      kstr = x.substr(0, idx);
      vstr = x.substr(idx + 1);
    } else {
      kstr = x;
      vstr = '';
    }

    k = decodeURIComponent(kstr);
    v = decodeURIComponent(vstr);

    if (!hasOwnProperty(obj, k)) {
      obj[k] = v;
    } else if (isArray(obj[k])) {
      obj[k].push(v);
    } else {
      obj[k] = [obj[k], v];
    }
  }

  return obj;
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

},{}],927:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var stringifyPrimitive = function(v) {
  switch (typeof v) {
    case 'string':
      return v;

    case 'boolean':
      return v ? 'true' : 'false';

    case 'number':
      return isFinite(v) ? v : '';

    default:
      return '';
  }
};

module.exports = function(obj, sep, eq, name) {
  sep = sep || '&';
  eq = eq || '=';
  if (obj === null) {
    obj = undefined;
  }

  if (typeof obj === 'object') {
    return map(objectKeys(obj), function(k) {
      var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
      if (isArray(obj[k])) {
        return map(obj[k], function(v) {
          return ks + encodeURIComponent(stringifyPrimitive(v));
        }).join(sep);
      } else {
        return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
      }
    }).join(sep);

  }

  if (!name) return '';
  return encodeURIComponent(stringifyPrimitive(name)) + eq +
         encodeURIComponent(stringifyPrimitive(obj));
};

var isArray = Array.isArray || function (xs) {
  return Object.prototype.toString.call(xs) === '[object Array]';
};

function map (xs, f) {
  if (xs.map) return xs.map(f);
  var res = [];
  for (var i = 0; i < xs.length; i++) {
    res.push(f(xs[i], i));
  }
  return res;
}

var objectKeys = Object.keys || function (obj) {
  var res = [];
  for (var key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) res.push(key);
  }
  return res;
};

},{}],928:[function(require,module,exports){
'use strict';

exports.decode = exports.parse = require('./decode');
exports.encode = exports.stringify = require('./encode');

},{"./decode":926,"./encode":927}],929:[function(require,module,exports){
'use strict';

module.exports = partialSort;

// Floyd-Rivest selection algorithm:
// Rearrange items so that all items in the [left, k] range are smaller than all items in (k, right];
// The k-th element will have the (k - left + 1)th smallest value in [left, right]

function partialSort(arr, k, left, right, compare) {
    left = left || 0;
    right = right || (arr.length - 1);
    compare = compare || defaultCompare;

    while (right > left) {
        if (right - left > 600) {
            var n = right - left + 1;
            var m = k - left + 1;
            var z = Math.log(n);
            var s = 0.5 * Math.exp(2 * z / 3);
            var sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1);
            var newLeft = Math.max(left, Math.floor(k - m * s / n + sd));
            var newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd));
            partialSort(arr, k, newLeft, newRight, compare);
        }

        var t = arr[k];
        var i = left;
        var j = right;

        swap(arr, left, k);
        if (compare(arr[right], t) > 0) swap(arr, left, right);

        while (i < j) {
            swap(arr, i, j);
            i++;
            j--;
            while (compare(arr[i], t) < 0) i++;
            while (compare(arr[j], t) > 0) j--;
        }

        if (compare(arr[left], t) === 0) swap(arr, left, j);
        else {
            j++;
            swap(arr, j, right);
        }

        if (j <= k) left = j + 1;
        if (k <= j) right = j - 1;
    }
}

function swap(arr, i, j) {
    var tmp = arr[i];
    arr[i] = arr[j];
    arr[j] = tmp;
}

function defaultCompare(a, b) {
    return a < b ? -1 : a > b ? 1 : 0;
}

},{}],930:[function(require,module,exports){
'use strict'

var bnadd = require('big-rat/add')

module.exports = add

function add (a, b) {
  var n = a.length
  var r = new Array(n)
  for (var i=0; i<n; ++i) {
    r[i] = bnadd(a[i], b[i])
  }
  return r
}

},{"big-rat/add":16}],931:[function(require,module,exports){
'use strict'

module.exports = float2rat

var rat = require('big-rat')

function float2rat(v) {
  var result = new Array(v.length)
  for(var i=0; i<v.length; ++i) {
    result[i] = rat(v[i])
  }
  return result
}

},{"big-rat":19}],932:[function(require,module,exports){
'use strict'

var rat = require('big-rat')
var mul = require('big-rat/mul')

module.exports = muls

function muls(a, x) {
  var s = rat(x)
  var n = a.length
  var r = new Array(n)
  for(var i=0; i<n; ++i) {
    r[i] = mul(a[i], s)
  }
  return r
}

},{"big-rat":19,"big-rat/mul":28}],933:[function(require,module,exports){
'use strict'

var bnsub = require('big-rat/sub')

module.exports = sub

function sub(a, b) {
  var n = a.length
  var r = new Array(n)
    for(var i=0; i<n; ++i) {
    r[i] = bnsub(a[i], b[i])
  }
  return r
}

},{"big-rat/sub":30}],934:[function(require,module,exports){
module.exports = require("./lib/_stream_duplex.js")

},{"./lib/_stream_duplex.js":935}],935:[function(require,module,exports){
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

'use strict';

/*<replacement>*/

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    keys.push(key);
  }return keys;
};
/*</replacement>*/

module.exports = Duplex;

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
  var method = keys[v];
  if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}

function Duplex(options) {
  if (!(this instanceof Duplex)) return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false) this.readable = false;

  if (options && options.writable === false) this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended) return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  processNextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

function forEach(xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}
},{"./_stream_readable":937,"./_stream_writable":939,"core-util-is":78,"inherits":266,"process-nextick-args":922}],936:[function(require,module,exports){
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

'use strict';

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough)) return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function (chunk, encoding, cb) {
  cb(null, chunk);
};
},{"./_stream_transform":938,"core-util-is":78,"inherits":266}],937:[function(require,module,exports){
(function (process){
'use strict';

module.exports = Readable;

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = require('events').EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream;
(function () {
  try {
    Stream = require('st' + 'ream');
  } catch (_) {} finally {
    if (!Stream) Stream = require('events').EventEmitter;
  }
})();
/*</replacement>*/

var Buffer = require('buffer').Buffer;
/*<replacement>*/
var bufferShim = require('buffer-shims');
/*</replacement>*/

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = require('./internal/streams/BufferList');
var StringDecoder;

util.inherits(Readable, Stream);

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') {
    return emitter.prependListener(event, fn);
  } else {
    // This is a hack to make sure that our error handler is attached before any
    // userland ones.  NEVER DO THIS. This is here only because this code needs
    // to continue to work with older versions of Node.js that do not include
    // the prependListener() method. The goal is to eventually remove this hack.
    if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
  }
}

function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;

  // cast to ints.
  this.highWaterMark = ~ ~this.highWaterMark;

  // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;
  this.resumeScheduled = false;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  if (!(this instanceof Readable)) return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  if (options && typeof options.read === 'function') this._read = options.read;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
  var state = this._readableState;

  if (!state.objectMode && typeof chunk === 'string') {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = bufferShim.from(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var _e = new Error('stream.unshift() after end event');
      stream.emit('error', _e);
    } else {
      var skipAdd;
      if (state.decoder && !addToFront && !encoding) {
        chunk = state.decoder.write(chunk);
        skipAdd = !state.objectMode && chunk.length === 0;
      }

      if (!addToFront) state.reading = false;

      // Don't add to the buffer if we've decoded to an empty string chunk and
      // we're not in object mode
      if (!skipAdd) {
        // if we want the data now, just emit it.
        if (state.flowing && state.length === 0 && !state.sync) {
          stream.emit('data', chunk);
          stream.read(0);
        } else {
          // update the buffer info.
          state.length += state.objectMode ? 1 : chunk.length;
          if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);

          if (state.needReadable) emitReadable(stream);
        }
      }

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}

// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

  if (state.length === 0) {
    // If we have nothing in the buffer, then we want to know
    // as soon as we *do* get something into the buffer.
    if (!state.ended) state.needReadable = true;

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}

function onEofChunk(stream, state) {
  if (state.ended) return;
  if (state.decoder) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}

// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    processNextTick(maybeReadMore_, stream, state);
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;else len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
  this.emit('error', new Error('_read() is not implemented'));
};

Readable.prototype.pipe = function (dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    debug('onunpipe');
    if (readable === src) {
      cleanup();
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  var cleanedUp = false;
  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0) return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes) return this;

    if (!dest) dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest) dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++) {
      dests[i].emit('unpipe', this);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        processNextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

function nReadingNextTick(self) {
  debug('readable nexttick read 0');
  self.read(0);
}

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    processNextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function (chunk) {
    debug('wrapped data');
    if (state.decoder) chunk = state.decoder.write(chunk);

    // don't skip over falsy values in objectMode
    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (this[i] === undefined && typeof stream[i] === 'function') {
      this[i] = function (method) {
        return function () {
          return stream[method].apply(stream, arguments);
        };
      }(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function (ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
  var ret = bufferShim.allocUnsafe(n);
  var p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    processNextTick(endReadableNT, state, stream);
  }
}

function endReadableNT(state, stream) {
  // Check that we didn't get one last unshift.
  if (!state.endEmitted && state.length === 0) {
    state.endEmitted = true;
    stream.readable = false;
    stream.emit('end');
  }
}

function forEach(xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf(xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}
}).call(this,require('_process'))
},{"./_stream_duplex":935,"./internal/streams/BufferList":940,"_process":923,"buffer":46,"buffer-shims":48,"core-util-is":78,"events":95,"inherits":266,"isarray":272,"process-nextick-args":922,"string_decoder/":979,"util":43}],938:[function(require,module,exports){
// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

'use strict';

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);

function TransformState(stream) {
  this.afterTransform = function (er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
  this.writeencoding = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (data !== null && data !== undefined) stream.push(data);

  cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = new TransformState(this);

  var stream = this;

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  if (options) {
    if (typeof options.transform === 'function') this._transform = options.transform;

    if (typeof options.flush === 'function') this._flush = options.flush;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.once('prefinish', function () {
    if (typeof this._flush === 'function') this._flush(function (er, data) {
      done(stream, er, data);
    });else done(stream);
  });
}

Transform.prototype.push = function (chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
  throw new Error('_transform() is not implemented');
};

Transform.prototype._write = function (chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
  var ts = this._transformState;

  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data !== null && data !== undefined) stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var ts = stream._transformState;

  if (ws.length) throw new Error('Calling transform done when ws.length != 0');

  if (ts.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}
},{"./_stream_duplex":935,"core-util-is":78,"inherits":266}],939:[function(require,module,exports){
(function (process){
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.

'use strict';

module.exports = Writable;

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/

/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Writable.WritableState = WritableState;

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var internalUtil = {
  deprecate: require('util-deprecate')
};
/*</replacement>*/

/*<replacement>*/
var Stream;
(function () {
  try {
    Stream = require('st' + 'ream');
  } catch (_) {} finally {
    if (!Stream) Stream = require('events').EventEmitter;
  }
})();
/*</replacement>*/

var Buffer = require('buffer').Buffer;
/*<replacement>*/
var bufferShim = require('buffer-shims');
/*</replacement>*/

util.inherits(Writable, Stream);

function nop() {}

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;

  // cast to ints.
  this.highWaterMark = ~ ~this.highWaterMark;

  // drain event flag.
  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function (er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.bufferedRequest = null;
  this.lastBufferedRequest = null;

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;

  // count buffered requests
  this.bufferedRequestCount = 0;

  // allocate the first CorkedRequest, there is always
  // one allocated and free to use, and we maintain at most two
  this.corkedRequestsFree = new CorkedRequest(this);
}

WritableState.prototype.getBuffer = function getBuffer() {
  var current = this.bufferedRequest;
  var out = [];
  while (current) {
    out.push(current);
    current = current.next;
  }
  return out;
};

(function () {
  try {
    Object.defineProperty(WritableState.prototype, 'buffer', {
      get: internalUtil.deprecate(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
    return new Writable(options);
  }

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  if (options) {
    if (typeof options.write === 'function') this._write = options.write;

    if (typeof options.writev === 'function') this._writev = options.writev;
  }

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
  this.emit('error', new Error('Cannot pipe, not readable'));
};

function writeAfterEnd(stream, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  processNextTick(cb, er);
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;
  // Always throw error if a null is written
  // if we are not in object mode then throw
  // if it is not a buffer, string, or undefined.
  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    processNextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (Buffer.isBuffer(chunk)) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function () {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function () {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
  }
};

Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
  // node::ParseEncoding() requires lower case.
  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
  this._writableState.defaultEncoding = encoding;
  return this;
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
    chunk = bufferShim.from(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);

  if (Buffer.isBuffer(chunk)) encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret) state.needDrain = true;

  if (state.writing || state.corked) {
    var last = state.lastBufferedRequest;
    state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
    if (last) {
      last.next = state.lastBufferedRequest;
    } else {
      state.bufferedRequest = state.lastBufferedRequest;
    }
    state.bufferedRequestCount += 1;
  } else {
    doWrite(stream, state, false, len, chunk, encoding, cb);
  }

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  --state.pendingcb;
  if (sync) processNextTick(cb, er);else cb(er);

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er) onwriteError(stream, state, sync, er, cb);else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(state);

    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
      clearBuffer(stream, state);
    }

    if (sync) {
      /*<replacement>*/
      asyncWrite(afterWrite, stream, state, finished, cb);
      /*</replacement>*/
    } else {
        afterWrite(stream, state, finished, cb);
      }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished) onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}

// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;
  var entry = state.bufferedRequest;

  if (stream._writev && entry && entry.next) {
    // Fast case, write everything using _writev()
    var l = state.bufferedRequestCount;
    var buffer = new Array(l);
    var holder = state.corkedRequestsFree;
    holder.entry = entry;

    var count = 0;
    while (entry) {
      buffer[count] = entry;
      entry = entry.next;
      count += 1;
    }

    doWrite(stream, state, true, state.length, buffer, '', holder.finish);

    // doWrite is almost always async, defer these to save a bit of time
    // as the hot path ends with doWrite
    state.pendingcb++;
    state.lastBufferedRequest = null;
    if (holder.next) {
      state.corkedRequestsFree = holder.next;
      holder.next = null;
    } else {
      state.corkedRequestsFree = new CorkedRequest(state);
    }
  } else {
    // Slow case, write chunks one-by-one
    while (entry) {
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);
      entry = entry.next;
      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        break;
      }
    }

    if (entry === null) state.lastBufferedRequest = null;
  }

  state.bufferedRequestCount = 0;
  state.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is not implemented'));
};

Writable.prototype._writev = null;

Writable.prototype.end = function (chunk, encoding, cb) {
  var state = this._writableState;

  if (typeof chunk === 'function') {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished) endWritable(this, state, cb);
};

function needFinish(state) {
  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}

function prefinish(stream, state) {
  if (!state.prefinished) {
    state.prefinished = true;
    stream.emit('prefinish');
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    if (state.pendingcb === 0) {
      prefinish(stream, state);
      state.finished = true;
      stream.emit('finish');
    } else {
      prefinish(stream, state);
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) processNextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
  var _this = this;

  this.next = null;
  this.entry = null;

  this.finish = function (err) {
    var entry = _this.entry;
    _this.entry = null;
    while (entry) {
      var cb = entry.callback;
      state.pendingcb--;
      cb(err);
      entry = entry.next;
    }
    if (state.corkedRequestsFree) {
      state.corkedRequestsFree.next = _this;
    } else {
      state.corkedRequestsFree = _this;
    }
  };
}
}).call(this,require('_process'))
},{"./_stream_duplex":935,"_process":923,"buffer":46,"buffer-shims":48,"core-util-is":78,"events":95,"inherits":266,"process-nextick-args":922,"util-deprecate":998}],940:[function(require,module,exports){
'use strict';

var Buffer = require('buffer').Buffer;
/*<replacement>*/
var bufferShim = require('buffer-shims');
/*</replacement>*/

module.exports = BufferList;

function BufferList() {
  this.head = null;
  this.tail = null;
  this.length = 0;
}

BufferList.prototype.push = function (v) {
  var entry = { data: v, next: null };
  if (this.length > 0) this.tail.next = entry;else this.head = entry;
  this.tail = entry;
  ++this.length;
};

BufferList.prototype.unshift = function (v) {
  var entry = { data: v, next: this.head };
  if (this.length === 0) this.tail = entry;
  this.head = entry;
  ++this.length;
};

BufferList.prototype.shift = function () {
  if (this.length === 0) return;
  var ret = this.head.data;
  if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
  --this.length;
  return ret;
};

BufferList.prototype.clear = function () {
  this.head = this.tail = null;
  this.length = 0;
};

BufferList.prototype.join = function (s) {
  if (this.length === 0) return '';
  var p = this.head;
  var ret = '' + p.data;
  while (p = p.next) {
    ret += s + p.data;
  }return ret;
};

BufferList.prototype.concat = function (n) {
  if (this.length === 0) return bufferShim.alloc(0);
  if (this.length === 1) return this.head.data;
  var ret = bufferShim.allocUnsafe(n >>> 0);
  var p = this.head;
  var i = 0;
  while (p) {
    p.data.copy(ret, i);
    i += p.data.length;
    p = p.next;
  }
  return ret;
};
},{"buffer":46,"buffer-shims":48}],941:[function(require,module,exports){
module.exports = require("./lib/_stream_passthrough.js")

},{"./lib/_stream_passthrough.js":936}],942:[function(require,module,exports){
(function (process){
var Stream = (function (){
  try {
    return require('st' + 'ream'); // hack to fix a circular dependency issue when used with browserify
  } catch(_){}
}());
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = Stream || exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

if (!process.browser && process.env.READABLE_STREAM === 'disable' && Stream) {
  module.exports = Stream;
}

}).call(this,require('_process'))
},{"./lib/_stream_duplex.js":935,"./lib/_stream_passthrough.js":936,"./lib/_stream_readable.js":937,"./lib/_stream_transform.js":938,"./lib/_stream_writable.js":939,"_process":923}],943:[function(require,module,exports){
module.exports = require("./lib/_stream_transform.js")

},{"./lib/_stream_transform.js":938}],944:[function(require,module,exports){
module.exports = require("./lib/_stream_writable.js")

},{"./lib/_stream_writable.js":939}],945:[function(require,module,exports){
'use strict'

var compareCell = require('compare-cell')
var compareOrientedCell = require('compare-oriented-cell')
var orientation = require('cell-orientation')

module.exports = reduceCellComplex

function reduceCellComplex(cells) {
  cells.sort(compareOrientedCell)
  var n = cells.length
  var ptr = 0
  for(var i=0; i<n; ++i) {
    var c = cells[i]
    var o = orientation(c)
    if(o === 0) {
      continue
    }
    if(ptr > 0) {
      var f = cells[ptr-1]
      if(compareCell(c, f) === 0 &&
         orientation(f)    !== o) {
        ptr -= 1
        continue
      }
    }
    cells[ptr++] = c
  }
  cells.length = ptr
  return cells
}

},{"cell-orientation":55,"compare-cell":64,"compare-oriented-cell":65}],946:[function(require,module,exports){
/*!
 * repeat-string <https://github.com/jonschlinkert/repeat-string>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

'use strict';

/**
 * Results cache
 */

var res = '';
var cache;

/**
 * Expose `repeat`
 */

module.exports = repeat;

/**
 * Repeat the given `string` the specified `number`
 * of times.
 *
 * **Example:**
 *
 * ```js
 * var repeat = require('repeat-string');
 * repeat('A', 5);
 * //=> AAAAA
 * ```
 *
 * @param {String} `string` The string to repeat
 * @param {Number} `number` The number of times to repeat the string
 * @return {String} Repeated string
 * @api public
 */

function repeat(str, num) {
  if (typeof str !== 'string') {
    throw new TypeError('expected a string');
  }

  // cover common, quick use cases
  if (num === 1) return str;
  if (num === 2) return str + str;

  var max = str.length * num;
  if (cache !== str || typeof cache === 'undefined') {
    cache = str;
    res = '';
  } else if (res.length >= max) {
    return res.substr(0, max);
  }

  while (max > res.length && num > 1) {
    if (num & 1) {
      res += str;
    }

    num >>= 1;
    str += str;
  }

  res += str;
  res = res.substr(0, max);
  return res;
}

},{}],947:[function(require,module,exports){
// Copyright 2014 Simon Lydell
// X11 (“MIT”) Licensed. (See LICENSE.)

void (function(root, factory) {
  if (typeof define === "function" && define.amd) {
    define(factory)
  } else if (typeof exports === "object") {
    module.exports = factory()
  } else {
    root.resolveUrl = factory()
  }
}(this, function() {

  function resolveUrl(/* ...urls */) {
    var numUrls = arguments.length

    if (numUrls === 0) {
      throw new Error("resolveUrl requires at least one argument; got none.")
    }

    var base = document.createElement("base")
    base.href = arguments[0]

    if (numUrls === 1) {
      return base.href
    }

    var head = document.getElementsByTagName("head")[0]
    head.insertBefore(base, head.firstChild)

    var a = document.createElement("a")
    var resolved

    for (var index = 1; index < numUrls; index++) {
      a.href = arguments[index]
      resolved = a.href
      base.href = resolved
    }

    head.removeChild(base)

    return resolved
  }

  return resolveUrl

}));

},{}],948:[function(require,module,exports){
(function (global){
module.exports =
  global.performance &&
  global.performance.now ? function now() {
    return performance.now()
  } : Date.now || function now() {
    return +new Date
  }

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],949:[function(require,module,exports){
"use strict"

module.exports = compressExpansion

function compressExpansion(e) {
  var m = e.length
  var Q = e[e.length-1]
  var bottom = m
  for(var i=m-2; i>=0; --i) {
    var a = Q
    var b = e[i]
    Q = a + b
    var bv = Q - a
    var q = b - bv
    if(q) {
      e[--bottom] = Q
      Q = q
    }
  }
  var top = 0
  for(var i=bottom; i<m; ++i) {
    var a = e[i]
    var b = Q
    Q = a + b
    var bv = Q - a
    var q = b - bv
    if(q) {
      e[top++] = q
    }
  }
  e[top++] = Q
  e.length = top
  return e
}
},{}],950:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var robustSum = require("robust-sum")
var robustScale = require("robust-scale")
var compress = require("robust-compress")

var NUM_EXPANDED = 6

function cofactor(m, c) {
  var result = new Array(m.length-1)
  for(var i=1; i<m.length; ++i) {
    var r = result[i-1] = new Array(m.length-1)
    for(var j=0,k=0; j<m.length; ++j) {
      if(j === c) {
        continue
      }
      r[k++] = m[i][j]
    }
  }
  return result
}

function matrix(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = new Array(n)
    for(var j=0; j<n; ++j) {
      result[i][j] = ["m[", i, "][", j, "]"].join("")
    }
  }
  return result
}

function sign(n) {
  if(n & 1) {
    return "-"
  }
  return ""
}

function generateSum(expr) {
  if(expr.length === 1) {
    return expr[0]
  } else if(expr.length === 2) {
    return ["sum(", expr[0], ",", expr[1], ")"].join("")
  } else {
    var m = expr.length>>1
    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
  }
}

function determinant(m) {
  if(m.length === 2) {
    return ["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")
  } else {
    var expr = []
    for(var i=0; i<m.length; ++i) {
      expr.push(["scale(", determinant(cofactor(m, i)), ",", sign(i), m[0][i], ")"].join(""))
    }
    return generateSum(expr)
  }
}

function compileDeterminant(n) {
  var proc = new Function("sum", "scale", "prod", "compress", [
    "function robustDeterminant",n, "(m){return compress(", 
      determinant(matrix(n)),
    ")};return robustDeterminant", n].join(""))
  return proc(robustSum, robustScale, twoProduct, compress)
}

var CACHE = [
  function robustDeterminant0() { return [0] },
  function robustDeterminant1(m) { return [m[0][0]] }
]

function generateDispatch() {
  while(CACHE.length < NUM_EXPANDED) {
    CACHE.push(compileDeterminant(CACHE.length))
  }
  var procArgs = []
  var code = ["function robustDeterminant(m){switch(m.length){"]
  for(var i=0; i<NUM_EXPANDED; ++i) {
    procArgs.push("det" + i)
    code.push("case ", i, ":return det", i, "(m);")
  }
  code.push("}\
var det=CACHE[m.length];\
if(!det)\
det=CACHE[m.length]=gen(m.length);\
return det(m);\
}\
return robustDeterminant")
  procArgs.push("CACHE", "gen", code.join(""))
  var proc = Function.apply(undefined, procArgs)
  module.exports = proc.apply(undefined, CACHE.concat([CACHE, compileDeterminant]))
  for(var i=0; i<CACHE.length; ++i) {
    module.exports[i] = CACHE[i]
  }
}

generateDispatch()
},{"robust-compress":949,"robust-scale":956,"robust-sum":959,"two-product":990}],951:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var robustSum = require("robust-sum")

module.exports = robustDotProduct

function robustDotProduct(a, b) {
  var r = twoProduct(a[0], b[0])
  for(var i=1; i<a.length; ++i) {
    r = robustSum(r, twoProduct(a[i], b[i]))
  }
  return r
}
},{"robust-sum":959,"two-product":990}],952:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var robustSum = require("robust-sum")
var robustDiff = require("robust-subtract")
var robustScale = require("robust-scale")

var NUM_EXPAND = 6

function cofactor(m, c) {
  var result = new Array(m.length-1)
  for(var i=1; i<m.length; ++i) {
    var r = result[i-1] = new Array(m.length-1)
    for(var j=0,k=0; j<m.length; ++j) {
      if(j === c) {
        continue
      }
      r[k++] = m[i][j]
    }
  }
  return result
}

function matrix(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = new Array(n)
    for(var j=0; j<n; ++j) {
      result[i][j] = ["m", j, "[", (n-i-2), "]"].join("")
    }
  }
  return result
}

function generateSum(expr) {
  if(expr.length === 1) {
    return expr[0]
  } else if(expr.length === 2) {
    return ["sum(", expr[0], ",", expr[1], ")"].join("")
  } else {
    var m = expr.length>>1
    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
  }
}

function makeProduct(a, b) {
  if(a.charAt(0) === "m") {
    if(b.charAt(0) === "w") {
      var toks = a.split("[")
      return ["w", b.substr(1), "m", toks[0].substr(1)].join("")
    } else {
      return ["prod(", a, ",", b, ")"].join("")
    }
  } else {
    return makeProduct(b, a)
  }
}

function sign(s) {
  if(s & 1 !== 0) {
    return "-"
  }
  return ""
}

function determinant(m) {
  if(m.length === 2) {
    return [["diff(", makeProduct(m[0][0], m[1][1]), ",", makeProduct(m[1][0], m[0][1]), ")"].join("")]
  } else {
    var expr = []
    for(var i=0; i<m.length; ++i) {
      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
    }
    return expr
  }
}

function makeSquare(d, n) {
  var terms = []
  for(var i=0; i<n-2; ++i) {
    terms.push(["prod(m", d, "[", i, "],m", d, "[", i, "])"].join(""))
  }
  return generateSum(terms)
}

function orientation(n) {
  var pos = []
  var neg = []
  var m = matrix(n)
  for(var i=0; i<n; ++i) {
    m[0][i] = "1"
    m[n-1][i] = "w"+i
  } 
  for(var i=0; i<n; ++i) {
    if((i&1)===0) {
      pos.push.apply(pos,determinant(cofactor(m, i)))
    } else {
      neg.push.apply(neg,determinant(cofactor(m, i)))
    }
  }
  var posExpr = generateSum(pos)
  var negExpr = generateSum(neg)
  var funcName = "exactInSphere" + n
  var funcArgs = []
  for(var i=0; i<n; ++i) {
    funcArgs.push("m" + i)
  }
  var code = ["function ", funcName, "(", funcArgs.join(), "){"]
  for(var i=0; i<n; ++i) {
    code.push("var w",i,"=",makeSquare(i,n),";")
    for(var j=0; j<n; ++j) {
      if(j !== i) {
        code.push("var w",i,"m",j,"=scale(w",i,",m",j,"[0]);")
      }
    }
  }
  code.push("var p=", posExpr, ",n=", negExpr, ",d=diff(p,n);return d[d.length-1];}return ", funcName)
  var proc = new Function("sum", "diff", "prod", "scale", code.join(""))
  return proc(robustSum, robustDiff, twoProduct, robustScale)
}

function inSphere0() { return 0 }
function inSphere1() { return 0 }
function inSphere2() { return 0 }

var CACHED = [
  inSphere0,
  inSphere1,
  inSphere2
]

function slowInSphere(args) {
  var proc = CACHED[args.length]
  if(!proc) {
    proc = CACHED[args.length] = orientation(args.length)
  }
  return proc.apply(undefined, args)
}

function generateInSphereTest() {
  while(CACHED.length <= NUM_EXPAND) {
    CACHED.push(orientation(CACHED.length))
  }
  var args = []
  var procArgs = ["slow"]
  for(var i=0; i<=NUM_EXPAND; ++i) {
    args.push("a" + i)
    procArgs.push("o" + i)
  }
  var code = [
    "function testInSphere(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
  ]
  for(var i=2; i<=NUM_EXPAND; ++i) {
    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
  }
  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return testInSphere")
  procArgs.push(code.join(""))

  var proc = Function.apply(undefined, procArgs)

  module.exports = proc.apply(undefined, [slowInSphere].concat(CACHED))
  for(var i=0; i<=NUM_EXPAND; ++i) {
    module.exports[i] = CACHED[i]
  }
}

generateInSphereTest()
},{"robust-scale":956,"robust-subtract":958,"robust-sum":959,"two-product":990}],953:[function(require,module,exports){
"use strict"

var determinant = require("robust-determinant")

var NUM_EXPAND = 6

function generateSolver(n) {
  var funcName = "robustLinearSolve" + n + "d"
  var code = ["function ", funcName, "(A,b){return ["]
  for(var i=0; i<n; ++i) {
    code.push("det([")
    for(var j=0; j<n; ++j) {
      if(j > 0) {
        code.push(",")
      }
      code.push("[")
      for(var k=0; k<n; ++k) {
        if(k > 0) {
          code.push(",")
        }
        if(k === i) {
          code.push("+b[", j, "]")
        } else {
          code.push("+A[", j, "][", k, "]")
        }
      }
      code.push("]")
    }
    code.push("]),")
  }
  code.push("det(A)]}return ", funcName)
  var proc = new Function("det", code.join(""))
  if(n < 6) {
    return proc(determinant[n])
  }
  return proc(determinant)
}

function robustLinearSolve0d() {
  return [ 0 ]
}

function robustLinearSolve1d(A, b) {
  return [ [ b[0] ], [ A[0][0] ] ]
}

var CACHE = [
  robustLinearSolve0d,
  robustLinearSolve1d
]

function generateDispatch() {
  while(CACHE.length < NUM_EXPAND) {
    CACHE.push(generateSolver(CACHE.length))
  }
  var procArgs = []
  var code = ["function dispatchLinearSolve(A,b){switch(A.length){"]
  for(var i=0; i<NUM_EXPAND; ++i) {
    procArgs.push("s" + i)
    code.push("case ", i, ":return s", i, "(A,b);")
  }
  code.push("}var s=CACHE[A.length];if(!s)s=CACHE[A.length]=g(A.length);return s(A,b)}return dispatchLinearSolve")
  procArgs.push("CACHE", "g", code.join(""))
  var proc = Function.apply(undefined, procArgs)
  module.exports = proc.apply(undefined, CACHE.concat([CACHE, generateSolver]))
  for(var i=0; i<NUM_EXPAND; ++i) {
    module.exports[i] = CACHE[i]
  }
}

generateDispatch()
},{"robust-determinant":950}],954:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var robustSum = require("robust-sum")
var robustScale = require("robust-scale")
var robustSubtract = require("robust-subtract")

var NUM_EXPAND = 5

var EPSILON     = 1.1102230246251565e-16
var ERRBOUND3   = (3.0 + 16.0 * EPSILON) * EPSILON
var ERRBOUND4   = (7.0 + 56.0 * EPSILON) * EPSILON

function cofactor(m, c) {
  var result = new Array(m.length-1)
  for(var i=1; i<m.length; ++i) {
    var r = result[i-1] = new Array(m.length-1)
    for(var j=0,k=0; j<m.length; ++j) {
      if(j === c) {
        continue
      }
      r[k++] = m[i][j]
    }
  }
  return result
}

function matrix(n) {
  var result = new Array(n)
  for(var i=0; i<n; ++i) {
    result[i] = new Array(n)
    for(var j=0; j<n; ++j) {
      result[i][j] = ["m", j, "[", (n-i-1), "]"].join("")
    }
  }
  return result
}

function sign(n) {
  if(n & 1) {
    return "-"
  }
  return ""
}

function generateSum(expr) {
  if(expr.length === 1) {
    return expr[0]
  } else if(expr.length === 2) {
    return ["sum(", expr[0], ",", expr[1], ")"].join("")
  } else {
    var m = expr.length>>1
    return ["sum(", generateSum(expr.slice(0, m)), ",", generateSum(expr.slice(m)), ")"].join("")
  }
}

function determinant(m) {
  if(m.length === 2) {
    return [["sum(prod(", m[0][0], ",", m[1][1], "),prod(-", m[0][1], ",", m[1][0], "))"].join("")]
  } else {
    var expr = []
    for(var i=0; i<m.length; ++i) {
      expr.push(["scale(", generateSum(determinant(cofactor(m, i))), ",", sign(i), m[0][i], ")"].join(""))
    }
    return expr
  }
}

function orientation(n) {
  var pos = []
  var neg = []
  var m = matrix(n)
  var args = []
  for(var i=0; i<n; ++i) {
    if((i&1)===0) {
      pos.push.apply(pos, determinant(cofactor(m, i)))
    } else {
      neg.push.apply(neg, determinant(cofactor(m, i)))
    }
    args.push("m" + i)
  }
  var posExpr = generateSum(pos)
  var negExpr = generateSum(neg)
  var funcName = "orientation" + n + "Exact"
  var code = ["function ", funcName, "(", args.join(), "){var p=", posExpr, ",n=", negExpr, ",d=sub(p,n);\
return d[d.length-1];};return ", funcName].join("")
  var proc = new Function("sum", "prod", "scale", "sub", code)
  return proc(robustSum, twoProduct, robustScale, robustSubtract)
}

var orientation3Exact = orientation(3)
var orientation4Exact = orientation(4)

var CACHED = [
  function orientation0() { return 0 },
  function orientation1() { return 0 },
  function orientation2(a, b) { 
    return b[0] - a[0]
  },
  function orientation3(a, b, c) {
    var l = (a[1] - c[1]) * (b[0] - c[0])
    var r = (a[0] - c[0]) * (b[1] - c[1])
    var det = l - r
    var s
    if(l > 0) {
      if(r <= 0) {
        return det
      } else {
        s = l + r
      }
    } else if(l < 0) {
      if(r >= 0) {
        return det
      } else {
        s = -(l + r)
      }
    } else {
      return det
    }
    var tol = ERRBOUND3 * s
    if(det >= tol || det <= -tol) {
      return det
    }
    return orientation3Exact(a, b, c)
  },
  function orientation4(a,b,c,d) {
    var adx = a[0] - d[0]
    var bdx = b[0] - d[0]
    var cdx = c[0] - d[0]
    var ady = a[1] - d[1]
    var bdy = b[1] - d[1]
    var cdy = c[1] - d[1]
    var adz = a[2] - d[2]
    var bdz = b[2] - d[2]
    var cdz = c[2] - d[2]
    var bdxcdy = bdx * cdy
    var cdxbdy = cdx * bdy
    var cdxady = cdx * ady
    var adxcdy = adx * cdy
    var adxbdy = adx * bdy
    var bdxady = bdx * ady
    var det = adz * (bdxcdy - cdxbdy) 
            + bdz * (cdxady - adxcdy)
            + cdz * (adxbdy - bdxady)
    var permanent = (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz)
                  + (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz)
                  + (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz)
    var tol = ERRBOUND4 * permanent
    if ((det > tol) || (-det > tol)) {
      return det
    }
    return orientation4Exact(a,b,c,d)
  }
]

function slowOrient(args) {
  var proc = CACHED[args.length]
  if(!proc) {
    proc = CACHED[args.length] = orientation(args.length)
  }
  return proc.apply(undefined, args)
}

function generateOrientationProc() {
  while(CACHED.length <= NUM_EXPAND) {
    CACHED.push(orientation(CACHED.length))
  }
  var args = []
  var procArgs = ["slow"]
  for(var i=0; i<=NUM_EXPAND; ++i) {
    args.push("a" + i)
    procArgs.push("o" + i)
  }
  var code = [
    "function getOrientation(", args.join(), "){switch(arguments.length){case 0:case 1:return 0;"
  ]
  for(var i=2; i<=NUM_EXPAND; ++i) {
    code.push("case ", i, ":return o", i, "(", args.slice(0, i).join(), ");")
  }
  code.push("}var s=new Array(arguments.length);for(var i=0;i<arguments.length;++i){s[i]=arguments[i]};return slow(s);}return getOrientation")
  procArgs.push(code.join(""))

  var proc = Function.apply(undefined, procArgs)
  module.exports = proc.apply(undefined, [slowOrient].concat(CACHED))
  for(var i=0; i<=NUM_EXPAND; ++i) {
    module.exports[i] = CACHED[i]
  }
}

generateOrientationProc()
},{"robust-scale":956,"robust-subtract":958,"robust-sum":959,"two-product":990}],955:[function(require,module,exports){
"use strict"

var robustSum = require("robust-sum")
var robustScale = require("robust-scale")

module.exports = robustProduct

function robustProduct(a, b) {
  if(a.length === 1) {
    return robustScale(b, a[0])
  }
  if(b.length === 1) {
    return robustScale(a, b[0])
  }
  if(a.length === 0 || b.length === 0) {
    return [0]
  }
  var r = [0]
  if(a.length < b.length) {
    for(var i=0; i<a.length; ++i) {
      r = robustSum(r, robustScale(b, a[i]))
    }
  } else {
    for(var i=0; i<b.length; ++i) {
      r = robustSum(r, robustScale(a, b[i]))
    }    
  }
  return r
}
},{"robust-scale":956,"robust-sum":959}],956:[function(require,module,exports){
"use strict"

var twoProduct = require("two-product")
var twoSum = require("two-sum")

module.exports = scaleLinearExpansion

function scaleLinearExpansion(e, scale) {
  var n = e.length
  if(n === 1) {
    var ts = twoProduct(e[0], scale)
    if(ts[0]) {
      return ts
    }
    return [ ts[1] ]
  }
  var g = new Array(2 * n)
  var q = [0.1, 0.1]
  var t = [0.1, 0.1]
  var count = 0
  twoProduct(e[0], scale, q)
  if(q[0]) {
    g[count++] = q[0]
  }
  for(var i=1; i<n; ++i) {
    twoProduct(e[i], scale, t)
    var pq = q[1]
    twoSum(pq, t[0], q)
    if(q[0]) {
      g[count++] = q[0]
    }
    var a = t[1]
    var b = q[1]
    var x = a + b
    var bv = x - a
    var y = b - bv
    q[1] = x
    if(y) {
      g[count++] = y
    }
  }
  if(q[1]) {
    g[count++] = q[1]
  }
  if(count === 0) {
    g[count++] = 0.0
  }
  g.length = count
  return g
}
},{"two-product":990,"two-sum":991}],957:[function(require,module,exports){
"use strict"

module.exports = segmentsIntersect

var orient = require("robust-orientation")[3]

function checkCollinear(a0, a1, b0, b1) {

  for(var d=0; d<2; ++d) {
    var x0 = a0[d]
    var y0 = a1[d]
    var l0 = Math.min(x0, y0)
    var h0 = Math.max(x0, y0)    

    var x1 = b0[d]
    var y1 = b1[d]
    var l1 = Math.min(x1, y1)
    var h1 = Math.max(x1, y1)    

    if(h1 < l0 || h0 < l1) {
      return false
    }
  }

  return true
}

function segmentsIntersect(a0, a1, b0, b1) {
  var x0 = orient(a0, b0, b1)
  var y0 = orient(a1, b0, b1)
  if((x0 > 0 && y0 > 0) || (x0 < 0 && y0 < 0)) {
    return false
  }

  var x1 = orient(b0, a0, a1)
  var y1 = orient(b1, a0, a1)
  if((x1 > 0 && y1 > 0) || (x1 < 0 && y1 < 0)) {
    return false
  }

  //Check for degenerate collinear case
  if(x0 === 0 && y0 === 0 && x1 === 0 && y1 === 0) {
    return checkCollinear(a0, a1, b0, b1)
  }

  return true
}
},{"robust-orientation":954}],958:[function(require,module,exports){
"use strict"

module.exports = robustSubtract

//Easy case: Add two scalars
function scalarScalar(a, b) {
  var x = a + b
  var bv = x - a
  var av = x - bv
  var br = b - bv
  var ar = a - av
  var y = ar + br
  if(y) {
    return [y, x]
  }
  return [x]
}

function robustSubtract(e, f) {
  var ne = e.length|0
  var nf = f.length|0
  if(ne === 1 && nf === 1) {
    return scalarScalar(e[0], -f[0])
  }
  var n = ne + nf
  var g = new Array(n)
  var count = 0
  var eptr = 0
  var fptr = 0
  var abs = Math.abs
  var ei = e[eptr]
  var ea = abs(ei)
  var fi = -f[fptr]
  var fa = abs(fi)
  var a, b
  if(ea < fa) {
    b = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    b = fi
    fptr += 1
    if(fptr < nf) {
      fi = -f[fptr]
      fa = abs(fi)
    }
  }
  if((eptr < ne && ea < fa) || (fptr >= nf)) {
    a = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    a = fi
    fptr += 1
    if(fptr < nf) {
      fi = -f[fptr]
      fa = abs(fi)
    }
  }
  var x = a + b
  var bv = x - a
  var y = b - bv
  var q0 = y
  var q1 = x
  var _x, _bv, _av, _br, _ar
  while(eptr < ne && fptr < nf) {
    if(ea < fa) {
      a = ei
      eptr += 1
      if(eptr < ne) {
        ei = e[eptr]
        ea = abs(ei)
      }
    } else {
      a = fi
      fptr += 1
      if(fptr < nf) {
        fi = -f[fptr]
        fa = abs(fi)
      }
    }
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
  }
  while(eptr < ne) {
    a = ei
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
    }
  }
  while(fptr < nf) {
    a = fi
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    } 
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    fptr += 1
    if(fptr < nf) {
      fi = -f[fptr]
    }
  }
  if(q0) {
    g[count++] = q0
  }
  if(q1) {
    g[count++] = q1
  }
  if(!count) {
    g[count++] = 0.0  
  }
  g.length = count
  return g
}
},{}],959:[function(require,module,exports){
"use strict"

module.exports = linearExpansionSum

//Easy case: Add two scalars
function scalarScalar(a, b) {
  var x = a + b
  var bv = x - a
  var av = x - bv
  var br = b - bv
  var ar = a - av
  var y = ar + br
  if(y) {
    return [y, x]
  }
  return [x]
}

function linearExpansionSum(e, f) {
  var ne = e.length|0
  var nf = f.length|0
  if(ne === 1 && nf === 1) {
    return scalarScalar(e[0], f[0])
  }
  var n = ne + nf
  var g = new Array(n)
  var count = 0
  var eptr = 0
  var fptr = 0
  var abs = Math.abs
  var ei = e[eptr]
  var ea = abs(ei)
  var fi = f[fptr]
  var fa = abs(fi)
  var a, b
  if(ea < fa) {
    b = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    b = fi
    fptr += 1
    if(fptr < nf) {
      fi = f[fptr]
      fa = abs(fi)
    }
  }
  if((eptr < ne && ea < fa) || (fptr >= nf)) {
    a = ei
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
      ea = abs(ei)
    }
  } else {
    a = fi
    fptr += 1
    if(fptr < nf) {
      fi = f[fptr]
      fa = abs(fi)
    }
  }
  var x = a + b
  var bv = x - a
  var y = b - bv
  var q0 = y
  var q1 = x
  var _x, _bv, _av, _br, _ar
  while(eptr < ne && fptr < nf) {
    if(ea < fa) {
      a = ei
      eptr += 1
      if(eptr < ne) {
        ei = e[eptr]
        ea = abs(ei)
      }
    } else {
      a = fi
      fptr += 1
      if(fptr < nf) {
        fi = f[fptr]
        fa = abs(fi)
      }
    }
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
  }
  while(eptr < ne) {
    a = ei
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    }
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    eptr += 1
    if(eptr < ne) {
      ei = e[eptr]
    }
  }
  while(fptr < nf) {
    a = fi
    b = q0
    x = a + b
    bv = x - a
    y = b - bv
    if(y) {
      g[count++] = y
    } 
    _x = q1 + x
    _bv = _x - q1
    _av = _x - _bv
    _br = x - _bv
    _ar = q1 - _av
    q0 = _ar + _br
    q1 = _x
    fptr += 1
    if(fptr < nf) {
      fi = f[fptr]
    }
  }
  if(q0) {
    g[count++] = q0
  }
  if(q1) {
    g[count++] = q1
  }
  if(!count) {
    g[count++] = 0.0  
  }
  g.length = count
  return g
}
},{}],960:[function(require,module,exports){
var encode = require('./lib/encoder'),
    decode = require('./lib/decoder');

module.exports = {
  encode: encode,
  decode: decode
};

},{"./lib/decoder":961,"./lib/encoder":962}],961:[function(require,module,exports){
(function (Buffer){
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/*
   Copyright 2011 notmasteryet

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

// - The JPEG specification can be found in the ITU CCITT Recommendation T.81
//   (www.w3.org/Graphics/JPEG/itu-t81.pdf)
// - The JFIF specification can be found in the JPEG File Interchange Format
//   (www.w3.org/Graphics/JPEG/jfif3.pdf)
// - The Adobe Application-Specific JPEG markers in the Supporting the DCT Filters
//   in PostScript Level 2, Technical Note #5116
//   (partners.adobe.com/public/developer/en/ps/sdk/5116.DCT_Filter.pdf)

var JpegImage = (function jpegImage() {
  "use strict";
  var dctZigZag = new Int32Array([
     0,
     1,  8,
    16,  9,  2,
     3, 10, 17, 24,
    32, 25, 18, 11, 4,
     5, 12, 19, 26, 33, 40,
    48, 41, 34, 27, 20, 13,  6,
     7, 14, 21, 28, 35, 42, 49, 56,
    57, 50, 43, 36, 29, 22, 15,
    23, 30, 37, 44, 51, 58,
    59, 52, 45, 38, 31,
    39, 46, 53, 60,
    61, 54, 47,
    55, 62,
    63
  ]);

  var dctCos1  =  4017   // cos(pi/16)
  var dctSin1  =   799   // sin(pi/16)
  var dctCos3  =  3406   // cos(3*pi/16)
  var dctSin3  =  2276   // sin(3*pi/16)
  var dctCos6  =  1567   // cos(6*pi/16)
  var dctSin6  =  3784   // sin(6*pi/16)
  var dctSqrt2 =  5793   // sqrt(2)
  var dctSqrt1d2 = 2896  // sqrt(2) / 2

  function constructor() {
  }

  function buildHuffmanTable(codeLengths, values) {
    var k = 0, code = [], i, j, length = 16;
    while (length > 0 && !codeLengths[length - 1])
      length--;
    code.push({children: [], index: 0});
    var p = code[0], q;
    for (i = 0; i < length; i++) {
      for (j = 0; j < codeLengths[i]; j++) {
        p = code.pop();
        p.children[p.index] = values[k];
        while (p.index > 0) {
          p = code.pop();
        }
        p.index++;
        code.push(p);
        while (code.length <= i) {
          code.push(q = {children: [], index: 0});
          p.children[p.index] = q.children;
          p = q;
        }
        k++;
      }
      if (i + 1 < length) {
        // p here points to last code
        code.push(q = {children: [], index: 0});
        p.children[p.index] = q.children;
        p = q;
      }
    }
    return code[0].children;
  }

  function decodeScan(data, offset,
                      frame, components, resetInterval,
                      spectralStart, spectralEnd,
                      successivePrev, successive) {
    var precision = frame.precision;
    var samplesPerLine = frame.samplesPerLine;
    var scanLines = frame.scanLines;
    var mcusPerLine = frame.mcusPerLine;
    var progressive = frame.progressive;
    var maxH = frame.maxH, maxV = frame.maxV;

    var startOffset = offset, bitsData = 0, bitsCount = 0;
    function readBit() {
      if (bitsCount > 0) {
        bitsCount--;
        return (bitsData >> bitsCount) & 1;
      }
      bitsData = data[offset++];
      if (bitsData == 0xFF) {
        var nextByte = data[offset++];
        if (nextByte) {
          throw "unexpected marker: " + ((bitsData << 8) | nextByte).toString(16);
        }
        // unstuff 0
      }
      bitsCount = 7;
      return bitsData >>> 7;
    }
    function decodeHuffman(tree) {
      var node = tree, bit;
      while ((bit = readBit()) !== null) {
        node = node[bit];
        if (typeof node === 'number')
          return node;
        if (typeof node !== 'object')
          throw "invalid huffman sequence";
      }
      return null;
    }
    function receive(length) {
      var n = 0;
      while (length > 0) {
        var bit = readBit();
        if (bit === null) return;
        n = (n << 1) | bit;
        length--;
      }
      return n;
    }
    function receiveAndExtend(length) {
      var n = receive(length);
      if (n >= 1 << (length - 1))
        return n;
      return n + (-1 << length) + 1;
    }
    function decodeBaseline(component, zz) {
      var t = decodeHuffman(component.huffmanTableDC);
      var diff = t === 0 ? 0 : receiveAndExtend(t);
      zz[0]= (component.pred += diff);
      var k = 1;
      while (k < 64) {
        var rs = decodeHuffman(component.huffmanTableAC);
        var s = rs & 15, r = rs >> 4;
        if (s === 0) {
          if (r < 15)
            break;
          k += 16;
          continue;
        }
        k += r;
        var z = dctZigZag[k];
        zz[z] = receiveAndExtend(s);
        k++;
      }
    }
    function decodeDCFirst(component, zz) {
      var t = decodeHuffman(component.huffmanTableDC);
      var diff = t === 0 ? 0 : (receiveAndExtend(t) << successive);
      zz[0] = (component.pred += diff);
    }
    function decodeDCSuccessive(component, zz) {
      zz[0] |= readBit() << successive;
    }
    var eobrun = 0;
    function decodeACFirst(component, zz) {
      if (eobrun > 0) {
        eobrun--;
        return;
      }
      var k = spectralStart, e = spectralEnd;
      while (k <= e) {
        var rs = decodeHuffman(component.huffmanTableAC);
        var s = rs & 15, r = rs >> 4;
        if (s === 0) {
          if (r < 15) {
            eobrun = receive(r) + (1 << r) - 1;
            break;
          }
          k += 16;
          continue;
        }
        k += r;
        var z = dctZigZag[k];
        zz[z] = receiveAndExtend(s) * (1 << successive);
        k++;
      }
    }
    var successiveACState = 0, successiveACNextValue;
    function decodeACSuccessive(component, zz) {
      var k = spectralStart, e = spectralEnd, r = 0;
      while (k <= e) {
        var z = dctZigZag[k];
        switch (successiveACState) {
        case 0: // initial state
          var rs = decodeHuffman(component.huffmanTableAC);
          var s = rs & 15, r = rs >> 4;
          if (s === 0) {
            if (r < 15) {
              eobrun = receive(r) + (1 << r);
              successiveACState = 4;
            } else {
              r = 16;
              successiveACState = 1;
            }
          } else {
            if (s !== 1)
              throw "invalid ACn encoding";
            successiveACNextValue = receiveAndExtend(s);
            successiveACState = r ? 2 : 3;
          }
          continue;
        case 1: // skipping r zero items
        case 2:
          if (zz[z])
            zz[z] += (readBit() << successive);
          else {
            r--;
            if (r === 0)
              successiveACState = successiveACState == 2 ? 3 : 0;
          }
          break;
        case 3: // set value for a zero item
          if (zz[z])
            zz[z] += (readBit() << successive);
          else {
            zz[z] = successiveACNextValue << successive;
            successiveACState = 0;
          }
          break;
        case 4: // eob
          if (zz[z])
            zz[z] += (readBit() << successive);
          break;
        }
        k++;
      }
      if (successiveACState === 4) {
        eobrun--;
        if (eobrun === 0)
          successiveACState = 0;
      }
    }
    function decodeMcu(component, decode, mcu, row, col) {
      var mcuRow = (mcu / mcusPerLine) | 0;
      var mcuCol = mcu % mcusPerLine;
      var blockRow = mcuRow * component.v + row;
      var blockCol = mcuCol * component.h + col;
      decode(component, component.blocks[blockRow][blockCol]);
    }
    function decodeBlock(component, decode, mcu) {
      var blockRow = (mcu / component.blocksPerLine) | 0;
      var blockCol = mcu % component.blocksPerLine;
      decode(component, component.blocks[blockRow][blockCol]);
    }

    var componentsLength = components.length;
    var component, i, j, k, n;
    var decodeFn;
    if (progressive) {
      if (spectralStart === 0)
        decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive;
      else
        decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive;
    } else {
      decodeFn = decodeBaseline;
    }

    var mcu = 0, marker;
    var mcuExpected;
    if (componentsLength == 1) {
      mcuExpected = components[0].blocksPerLine * components[0].blocksPerColumn;
    } else {
      mcuExpected = mcusPerLine * frame.mcusPerColumn;
    }
    if (!resetInterval) resetInterval = mcuExpected;

    var h, v;
    while (mcu < mcuExpected) {
      // reset interval stuff
      for (i = 0; i < componentsLength; i++)
        components[i].pred = 0;
      eobrun = 0;

      if (componentsLength == 1) {
        component = components[0];
        for (n = 0; n < resetInterval; n++) {
          decodeBlock(component, decodeFn, mcu);
          mcu++;
        }
      } else {
        for (n = 0; n < resetInterval; n++) {
          for (i = 0; i < componentsLength; i++) {
            component = components[i];
            h = component.h;
            v = component.v;
            for (j = 0; j < v; j++) {
              for (k = 0; k < h; k++) {
                decodeMcu(component, decodeFn, mcu, j, k);
              }
            }
          }
          mcu++;

          // If we've reached our expected MCU's, stop decoding
          if (mcu === mcuExpected) break;
        }
      }

      // find marker
      bitsCount = 0;
      marker = (data[offset] << 8) | data[offset + 1];
      if (marker < 0xFF00) {
        throw "marker was not found";
      }

      if (marker >= 0xFFD0 && marker <= 0xFFD7) { // RSTx
        offset += 2;
      }
      else
        break;
    }

    return offset - startOffset;
  }

  function buildComponentData(frame, component) {
    var lines = [];
    var blocksPerLine = component.blocksPerLine;
    var blocksPerColumn = component.blocksPerColumn;
    var samplesPerLine = blocksPerLine << 3;
    var R = new Int32Array(64), r = new Uint8Array(64);

    // A port of poppler's IDCT method which in turn is taken from:
    //   Christoph Loeffler, Adriaan Ligtenberg, George S. Moschytz,
    //   "Practical Fast 1-D DCT Algorithms with 11 Multiplications",
    //   IEEE Intl. Conf. on Acoustics, Speech & Signal Processing, 1989,
    //   988-991.
    function quantizeAndInverse(zz, dataOut, dataIn) {
      var qt = component.quantizationTable;
      var v0, v1, v2, v3, v4, v5, v6, v7, t;
      var p = dataIn;
      var i;

      // dequant
      for (i = 0; i < 64; i++)
        p[i] = zz[i] * qt[i];

      // inverse DCT on rows
      for (i = 0; i < 8; ++i) {
        var row = 8 * i;

        // check for all-zero AC coefficients
        if (p[1 + row] == 0 && p[2 + row] == 0 && p[3 + row] == 0 &&
            p[4 + row] == 0 && p[5 + row] == 0 && p[6 + row] == 0 &&
            p[7 + row] == 0) {
          t = (dctSqrt2 * p[0 + row] + 512) >> 10;
          p[0 + row] = t;
          p[1 + row] = t;
          p[2 + row] = t;
          p[3 + row] = t;
          p[4 + row] = t;
          p[5 + row] = t;
          p[6 + row] = t;
          p[7 + row] = t;
          continue;
        }

        // stage 4
        v0 = (dctSqrt2 * p[0 + row] + 128) >> 8;
        v1 = (dctSqrt2 * p[4 + row] + 128) >> 8;
        v2 = p[2 + row];
        v3 = p[6 + row];
        v4 = (dctSqrt1d2 * (p[1 + row] - p[7 + row]) + 128) >> 8;
        v7 = (dctSqrt1d2 * (p[1 + row] + p[7 + row]) + 128) >> 8;
        v5 = p[3 + row] << 4;
        v6 = p[5 + row] << 4;

        // stage 3
        t = (v0 - v1+ 1) >> 1;
        v0 = (v0 + v1 + 1) >> 1;
        v1 = t;
        t = (v2 * dctSin6 + v3 * dctCos6 + 128) >> 8;
        v2 = (v2 * dctCos6 - v3 * dctSin6 + 128) >> 8;
        v3 = t;
        t = (v4 - v6 + 1) >> 1;
        v4 = (v4 + v6 + 1) >> 1;
        v6 = t;
        t = (v7 + v5 + 1) >> 1;
        v5 = (v7 - v5 + 1) >> 1;
        v7 = t;

        // stage 2
        t = (v0 - v3 + 1) >> 1;
        v0 = (v0 + v3 + 1) >> 1;
        v3 = t;
        t = (v1 - v2 + 1) >> 1;
        v1 = (v1 + v2 + 1) >> 1;
        v2 = t;
        t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;
        v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;
        v7 = t;
        t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;
        v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;
        v6 = t;

        // stage 1
        p[0 + row] = v0 + v7;
        p[7 + row] = v0 - v7;
        p[1 + row] = v1 + v6;
        p[6 + row] = v1 - v6;
        p[2 + row] = v2 + v5;
        p[5 + row] = v2 - v5;
        p[3 + row] = v3 + v4;
        p[4 + row] = v3 - v4;
      }

      // inverse DCT on columns
      for (i = 0; i < 8; ++i) {
        var col = i;

        // check for all-zero AC coefficients
        if (p[1*8 + col] == 0 && p[2*8 + col] == 0 && p[3*8 + col] == 0 &&
            p[4*8 + col] == 0 && p[5*8 + col] == 0 && p[6*8 + col] == 0 &&
            p[7*8 + col] == 0) {
          t = (dctSqrt2 * dataIn[i+0] + 8192) >> 14;
          p[0*8 + col] = t;
          p[1*8 + col] = t;
          p[2*8 + col] = t;
          p[3*8 + col] = t;
          p[4*8 + col] = t;
          p[5*8 + col] = t;
          p[6*8 + col] = t;
          p[7*8 + col] = t;
          continue;
        }

        // stage 4
        v0 = (dctSqrt2 * p[0*8 + col] + 2048) >> 12;
        v1 = (dctSqrt2 * p[4*8 + col] + 2048) >> 12;
        v2 = p[2*8 + col];
        v3 = p[6*8 + col];
        v4 = (dctSqrt1d2 * (p[1*8 + col] - p[7*8 + col]) + 2048) >> 12;
        v7 = (dctSqrt1d2 * (p[1*8 + col] + p[7*8 + col]) + 2048) >> 12;
        v5 = p[3*8 + col];
        v6 = p[5*8 + col];

        // stage 3
        t = (v0 - v1 + 1) >> 1;
        v0 = (v0 + v1 + 1) >> 1;
        v1 = t;
        t = (v2 * dctSin6 + v3 * dctCos6 + 2048) >> 12;
        v2 = (v2 * dctCos6 - v3 * dctSin6 + 2048) >> 12;
        v3 = t;
        t = (v4 - v6 + 1) >> 1;
        v4 = (v4 + v6 + 1) >> 1;
        v6 = t;
        t = (v7 + v5 + 1) >> 1;
        v5 = (v7 - v5 + 1) >> 1;
        v7 = t;

        // stage 2
        t = (v0 - v3 + 1) >> 1;
        v0 = (v0 + v3 + 1) >> 1;
        v3 = t;
        t = (v1 - v2 + 1) >> 1;
        v1 = (v1 + v2 + 1) >> 1;
        v2 = t;
        t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12;
        v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12;
        v7 = t;
        t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12;
        v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12;
        v6 = t;

        // stage 1
        p[0*8 + col] = v0 + v7;
        p[7*8 + col] = v0 - v7;
        p[1*8 + col] = v1 + v6;
        p[6*8 + col] = v1 - v6;
        p[2*8 + col] = v2 + v5;
        p[5*8 + col] = v2 - v5;
        p[3*8 + col] = v3 + v4;
        p[4*8 + col] = v3 - v4;
      }

      // convert to 8-bit integers
      for (i = 0; i < 64; ++i) {
        var sample = 128 + ((p[i] + 8) >> 4);
        dataOut[i] = sample < 0 ? 0 : sample > 0xFF ? 0xFF : sample;
      }
    }

    var i, j;
    for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) {
      var scanLine = blockRow << 3;
      for (i = 0; i < 8; i++)
        lines.push(new Uint8Array(samplesPerLine));
      for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) {
        quantizeAndInverse(component.blocks[blockRow][blockCol], r, R);

        var offset = 0, sample = blockCol << 3;
        for (j = 0; j < 8; j++) {
          var line = lines[scanLine + j];
          for (i = 0; i < 8; i++)
            line[sample + i] = r[offset++];
        }
      }
    }
    return lines;
  }

  function clampTo8bit(a) {
    return a < 0 ? 0 : a > 255 ? 255 : a;
  }

  constructor.prototype = {
    load: function load(path) {
      var xhr = new XMLHttpRequest();
      xhr.open("GET", path, true);
      xhr.responseType = "arraybuffer";
      xhr.onload = (function() {
        // TODO catch parse error
        var data = new Uint8Array(xhr.response || xhr.mozResponseArrayBuffer);
        this.parse(data);
        if (this.onload)
          this.onload();
      }).bind(this);
      xhr.send(null);
    },
    parse: function parse(data) {
      var offset = 0, length = data.length;
      function readUint16() {
        var value = (data[offset] << 8) | data[offset + 1];
        offset += 2;
        return value;
      }
      function readDataBlock() {
        var length = readUint16();
        var array = data.subarray(offset, offset + length - 2);
        offset += array.length;
        return array;
      }
      function prepareComponents(frame) {
        var maxH = 0, maxV = 0;
        var component, componentId;
        for (componentId in frame.components) {
          if (frame.components.hasOwnProperty(componentId)) {
            component = frame.components[componentId];
            if (maxH < component.h) maxH = component.h;
            if (maxV < component.v) maxV = component.v;
          }
        }
        var mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / maxH);
        var mcusPerColumn = Math.ceil(frame.scanLines / 8 / maxV);
        for (componentId in frame.components) {
          if (frame.components.hasOwnProperty(componentId)) {
            component = frame.components[componentId];
            var blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * component.h / maxH);
            var blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines  / 8) * component.v / maxV);
            var blocksPerLineForMcu = mcusPerLine * component.h;
            var blocksPerColumnForMcu = mcusPerColumn * component.v;
            var blocks = [];
            for (var i = 0; i < blocksPerColumnForMcu; i++) {
              var row = [];
              for (var j = 0; j < blocksPerLineForMcu; j++)
                row.push(new Int32Array(64));
              blocks.push(row);
            }
            component.blocksPerLine = blocksPerLine;
            component.blocksPerColumn = blocksPerColumn;
            component.blocks = blocks;
          }
        }
        frame.maxH = maxH;
        frame.maxV = maxV;
        frame.mcusPerLine = mcusPerLine;
        frame.mcusPerColumn = mcusPerColumn;
      }
      var jfif = null;
      var adobe = null;
      var pixels = null;
      var frame, resetInterval;
      var quantizationTables = [], frames = [];
      var huffmanTablesAC = [], huffmanTablesDC = [];
      var fileMarker = readUint16();
      if (fileMarker != 0xFFD8) { // SOI (Start of Image)
        throw "SOI not found";
      }

      fileMarker = readUint16();
      while (fileMarker != 0xFFD9) { // EOI (End of image)
        var i, j, l;
        switch(fileMarker) {
          case 0xFF00: break;
          case 0xFFE0: // APP0 (Application Specific)
          case 0xFFE1: // APP1
          case 0xFFE2: // APP2
          case 0xFFE3: // APP3
          case 0xFFE4: // APP4
          case 0xFFE5: // APP5
          case 0xFFE6: // APP6
          case 0xFFE7: // APP7
          case 0xFFE8: // APP8
          case 0xFFE9: // APP9
          case 0xFFEA: // APP10
          case 0xFFEB: // APP11
          case 0xFFEC: // APP12
          case 0xFFED: // APP13
          case 0xFFEE: // APP14
          case 0xFFEF: // APP15
          case 0xFFFE: // COM (Comment)
            var appData = readDataBlock();

            if (fileMarker === 0xFFE0) {
              if (appData[0] === 0x4A && appData[1] === 0x46 && appData[2] === 0x49 &&
                appData[3] === 0x46 && appData[4] === 0) { // 'JFIF\x00'
                jfif = {
                  version: { major: appData[5], minor: appData[6] },
                  densityUnits: appData[7],
                  xDensity: (appData[8] << 8) | appData[9],
                  yDensity: (appData[10] << 8) | appData[11],
                  thumbWidth: appData[12],
                  thumbHeight: appData[13],
                  thumbData: appData.subarray(14, 14 + 3 * appData[12] * appData[13])
                };
              }
            }
            // TODO APP1 - Exif
            if (fileMarker === 0xFFEE) {
              if (appData[0] === 0x41 && appData[1] === 0x64 && appData[2] === 0x6F &&
                appData[3] === 0x62 && appData[4] === 0x65 && appData[5] === 0) { // 'Adobe\x00'
                adobe = {
                  version: appData[6],
                  flags0: (appData[7] << 8) | appData[8],
                  flags1: (appData[9] << 8) | appData[10],
                  transformCode: appData[11]
                };
              }
            }
            break;

          case 0xFFDB: // DQT (Define Quantization Tables)
            var quantizationTablesLength = readUint16();
            var quantizationTablesEnd = quantizationTablesLength + offset - 2;
            while (offset < quantizationTablesEnd) {
              var quantizationTableSpec = data[offset++];
              var tableData = new Int32Array(64);
              if ((quantizationTableSpec >> 4) === 0) { // 8 bit values
                for (j = 0; j < 64; j++) {
                  var z = dctZigZag[j];
                  tableData[z] = data[offset++];
                }
              } else if ((quantizationTableSpec >> 4) === 1) { //16 bit
                for (j = 0; j < 64; j++) {
                  var z = dctZigZag[j];
                  tableData[z] = readUint16();
                }
              } else
                throw "DQT: invalid table spec";
              quantizationTables[quantizationTableSpec & 15] = tableData;
            }
            break;

          case 0xFFC0: // SOF0 (Start of Frame, Baseline DCT)
          case 0xFFC1: // SOF1 (Start of Frame, Extended DCT)
          case 0xFFC2: // SOF2 (Start of Frame, Progressive DCT)
            readUint16(); // skip data length
            frame = {};
            frame.extended = (fileMarker === 0xFFC1);
            frame.progressive = (fileMarker === 0xFFC2);
            frame.precision = data[offset++];
            frame.scanLines = readUint16();
            frame.samplesPerLine = readUint16();
            frame.components = {};
            frame.componentsOrder = [];
            var componentsCount = data[offset++], componentId;
            var maxH = 0, maxV = 0;
            for (i = 0; i < componentsCount; i++) {
              componentId = data[offset];
              var h = data[offset + 1] >> 4;
              var v = data[offset + 1] & 15;
              var qId = data[offset + 2];
              frame.componentsOrder.push(componentId);
              frame.components[componentId] = {
                h: h,
                v: v,
                quantizationTable: quantizationTables[qId]
              };
              offset += 3;
            }
            prepareComponents(frame);
            frames.push(frame);
            break;

          case 0xFFC4: // DHT (Define Huffman Tables)
            var huffmanLength = readUint16();
            for (i = 2; i < huffmanLength;) {
              var huffmanTableSpec = data[offset++];
              var codeLengths = new Uint8Array(16);
              var codeLengthSum = 0;
              for (j = 0; j < 16; j++, offset++)
                codeLengthSum += (codeLengths[j] = data[offset]);
              var huffmanValues = new Uint8Array(codeLengthSum);
              for (j = 0; j < codeLengthSum; j++, offset++)
                huffmanValues[j] = data[offset];
              i += 17 + codeLengthSum;

              ((huffmanTableSpec >> 4) === 0 ? 
                huffmanTablesDC : huffmanTablesAC)[huffmanTableSpec & 15] =
                buildHuffmanTable(codeLengths, huffmanValues);
            }
            break;

          case 0xFFDD: // DRI (Define Restart Interval)
            readUint16(); // skip data length
            resetInterval = readUint16();
            break;

          case 0xFFDA: // SOS (Start of Scan)
            var scanLength = readUint16();
            var selectorsCount = data[offset++];
            var components = [], component;
            for (i = 0; i < selectorsCount; i++) {
              component = frame.components[data[offset++]];
              var tableSpec = data[offset++];
              component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4];
              component.huffmanTableAC = huffmanTablesAC[tableSpec & 15];
              components.push(component);
            }
            var spectralStart = data[offset++];
            var spectralEnd = data[offset++];
            var successiveApproximation = data[offset++];
            var processed = decodeScan(data, offset,
              frame, components, resetInterval,
              spectralStart, spectralEnd,
              successiveApproximation >> 4, successiveApproximation & 15);
            offset += processed;
            break;
          default:
            if (data[offset - 3] == 0xFF &&
                data[offset - 2] >= 0xC0 && data[offset - 2] <= 0xFE) {
              // could be incorrect encoding -- last 0xFF byte of the previous
              // block was eaten by the encoder
              offset -= 3;
              break;
            }
            throw "unknown JPEG marker " + fileMarker.toString(16);
        }
        fileMarker = readUint16();
      }
      if (frames.length != 1)
        throw "only single frame JPEGs supported";

      this.width = frame.samplesPerLine;
      this.height = frame.scanLines;
      this.jfif = jfif;
      this.adobe = adobe;
      this.components = [];
      for (var i = 0; i < frame.componentsOrder.length; i++) {
        var component = frame.components[frame.componentsOrder[i]];
        this.components.push({
          lines: buildComponentData(frame, component),
          scaleX: component.h / frame.maxH,
          scaleY: component.v / frame.maxV
        });
      }
    },
    getData: function getData(width, height) {
      var scaleX = this.width / width, scaleY = this.height / height;

      var component1, component2, component3, component4;
      var component1Line, component2Line, component3Line, component4Line;
      var x, y;
      var offset = 0;
      var Y, Cb, Cr, K, C, M, Ye, R, G, B;
      var colorTransform;
      var dataLength = width * height * this.components.length;
      var data = new Uint8Array(dataLength);
      switch (this.components.length) {
        case 1:
          component1 = this.components[0];
          for (y = 0; y < height; y++) {
            component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)];
            for (x = 0; x < width; x++) {
              Y = component1Line[0 | (x * component1.scaleX * scaleX)];

              data[offset++] = Y;
            }
          }
          break;
        case 2:
          // PDF might compress two component data in custom colorspace
          component1 = this.components[0];
          component2 = this.components[1];
          for (y = 0; y < height; y++) {
            component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)];
            component2Line = component2.lines[0 | (y * component2.scaleY * scaleY)];
            for (x = 0; x < width; x++) {
              Y = component1Line[0 | (x * component1.scaleX * scaleX)];
              data[offset++] = Y;
              Y = component2Line[0 | (x * component2.scaleX * scaleX)];
              data[offset++] = Y;
            }
          }
          break;
        case 3:
          // The default transform for three components is true
          colorTransform = true;
          // The adobe transform marker overrides any previous setting
          if (this.adobe && this.adobe.transformCode)
            colorTransform = true;
          else if (typeof this.colorTransform !== 'undefined')
            colorTransform = !!this.colorTransform;

          component1 = this.components[0];
          component2 = this.components[1];
          component3 = this.components[2];
          for (y = 0; y < height; y++) {
            component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)];
            component2Line = component2.lines[0 | (y * component2.scaleY * scaleY)];
            component3Line = component3.lines[0 | (y * component3.scaleY * scaleY)];
            for (x = 0; x < width; x++) {
              if (!colorTransform) {
                R = component1Line[0 | (x * component1.scaleX * scaleX)];
                G = component2Line[0 | (x * component2.scaleX * scaleX)];
                B = component3Line[0 | (x * component3.scaleX * scaleX)];
              } else {
                Y = component1Line[0 | (x * component1.scaleX * scaleX)];
                Cb = component2Line[0 | (x * component2.scaleX * scaleX)];
                Cr = component3Line[0 | (x * component3.scaleX * scaleX)];

                R = clampTo8bit(Y + 1.402 * (Cr - 128));
                G = clampTo8bit(Y - 0.3441363 * (Cb - 128) - 0.71413636 * (Cr - 128));
                B = clampTo8bit(Y + 1.772 * (Cb - 128));
              }

              data[offset++] = R;
              data[offset++] = G;
              data[offset++] = B;
            }
          }
          break;
        case 4:
          if (!this.adobe)
            throw 'Unsupported color mode (4 components)';
          // The default transform for four components is false
          colorTransform = false;
          // The adobe transform marker overrides any previous setting
          if (this.adobe && this.adobe.transformCode)
            colorTransform = true;
          else if (typeof this.colorTransform !== 'undefined')
            colorTransform = !!this.colorTransform;

          component1 = this.components[0];
          component2 = this.components[1];
          component3 = this.components[2];
          component4 = this.components[3];
          for (y = 0; y < height; y++) {
            component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)];
            component2Line = component2.lines[0 | (y * component2.scaleY * scaleY)];
            component3Line = component3.lines[0 | (y * component3.scaleY * scaleY)];
            component4Line = component4.lines[0 | (y * component4.scaleY * scaleY)];
            for (x = 0; x < width; x++) {
              if (!colorTransform) {
                C = component1Line[0 | (x * component1.scaleX * scaleX)];
                M = component2Line[0 | (x * component2.scaleX * scaleX)];
                Ye = component3Line[0 | (x * component3.scaleX * scaleX)];
                K = component4Line[0 | (x * component4.scaleX * scaleX)];
              } else {
                Y = component1Line[0 | (x * component1.scaleX * scaleX)];
                Cb = component2Line[0 | (x * component2.scaleX * scaleX)];
                Cr = component3Line[0 | (x * component3.scaleX * scaleX)];
                K = component4Line[0 | (x * component4.scaleX * scaleX)];

                C = 255 - clampTo8bit(Y + 1.402 * (Cr - 128));
                M = 255 - clampTo8bit(Y - 0.3441363 * (Cb - 128) - 0.71413636 * (Cr - 128));
                Ye = 255 - clampTo8bit(Y + 1.772 * (Cb - 128));
              }
              data[offset++] = C;
              data[offset++] = M;
              data[offset++] = Ye;
              data[offset++] = K;
            }
          }
          break;
        default:
          throw 'Unsupported color mode';
      }
      return data;
    },
    copyToImageData: function copyToImageData(imageData) {
      var width = imageData.width, height = imageData.height;
      var imageDataArray = imageData.data;
      var data = this.getData(width, height);
      var i = 0, j = 0, x, y;
      var Y, K, C, M, R, G, B;
      switch (this.components.length) {
        case 1:
          for (y = 0; y < height; y++) {
            for (x = 0; x < width; x++) {
              Y = data[i++];

              imageDataArray[j++] = Y;
              imageDataArray[j++] = Y;
              imageDataArray[j++] = Y;
              imageDataArray[j++] = 255;
            }
          }
          break;
        case 3:
          for (y = 0; y < height; y++) {
            for (x = 0; x < width; x++) {
              R = data[i++];
              G = data[i++];
              B = data[i++];

              imageDataArray[j++] = R;
              imageDataArray[j++] = G;
              imageDataArray[j++] = B;
              imageDataArray[j++] = 255;
            }
          }
          break;
        case 4:
          for (y = 0; y < height; y++) {
            for (x = 0; x < width; x++) {
              C = data[i++];
              M = data[i++];
              Y = data[i++];
              K = data[i++];

              R = 255 - clampTo8bit(C * (1 - K / 255) + K);
              G = 255 - clampTo8bit(M * (1 - K / 255) + K);
              B = 255 - clampTo8bit(Y * (1 - K / 255) + K);

              imageDataArray[j++] = R;
              imageDataArray[j++] = G;
              imageDataArray[j++] = B;
              imageDataArray[j++] = 255;
            }
          }
          break;
        default:
          throw 'Unsupported color mode';
      }
    }
  };

  return constructor;
})();
module.exports = decode;

function decode(jpegData) {
  var arr = new Uint8Array(jpegData);
  var decoder = new JpegImage();
  decoder.parse(arr);
  var data =  decoder.getData(decoder.width, decoder.height);
  var buf = new Buffer(decoder.width * decoder.height * 4);
  var n = 0;
  for (var i = 0; i < buf.length; i++) {
    buf[i + (i/3 | 0)] = data[n++];
    if (i % 4 == 3) buf[i] = 255;
  }
  return {
    data: buf,
    width: decoder.width,
    height: decoder.height
  };
}

}).call(this,require("buffer").Buffer)
},{"buffer":46}],962:[function(require,module,exports){
(function (Buffer){
/*
  Copyright (c) 2008, Adobe Systems Incorporated
  All rights reserved.

  Redistribution and use in source and binary forms, with or without 
  modification, are permitted provided that the following conditions are
  met:

  * Redistributions of source code must retain the above copyright notice, 
    this list of conditions and the following disclaimer.
  
  * Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the 
    documentation and/or other materials provided with the distribution.
  
  * Neither the name of Adobe Systems Incorporated nor the names of its 
    contributors may be used to endorse or promote products derived from 
    this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
JPEG encoder ported to JavaScript and optimized by Andreas Ritter, www.bytestrom.eu, 11/2009

Basic GUI blocking jpeg encoder
*/

var btoa = btoa || function(buf) {
  return new Buffer(buf).toString('base64');
};

function JPEGEncoder(quality) {
  var self = this;
	var fround = Math.round;
	var ffloor = Math.floor;
	var YTable = new Array(64);
	var UVTable = new Array(64);
	var fdtbl_Y = new Array(64);
	var fdtbl_UV = new Array(64);
	var YDC_HT;
	var UVDC_HT;
	var YAC_HT;
	var UVAC_HT;
	
	var bitcode = new Array(65535);
	var category = new Array(65535);
	var outputfDCTQuant = new Array(64);
	var DU = new Array(64);
	var byteout = [];
	var bytenew = 0;
	var bytepos = 7;
	
	var YDU = new Array(64);
	var UDU = new Array(64);
	var VDU = new Array(64);
	var clt = new Array(256);
	var RGB_YUV_TABLE = new Array(2048);
	var currentQuality;
	
	var ZigZag = [
			 0, 1, 5, 6,14,15,27,28,
			 2, 4, 7,13,16,26,29,42,
			 3, 8,12,17,25,30,41,43,
			 9,11,18,24,31,40,44,53,
			10,19,23,32,39,45,52,54,
			20,22,33,38,46,51,55,60,
			21,34,37,47,50,56,59,61,
			35,36,48,49,57,58,62,63
		];
	
	var std_dc_luminance_nrcodes = [0,0,1,5,1,1,1,1,1,1,0,0,0,0,0,0,0];
	var std_dc_luminance_values = [0,1,2,3,4,5,6,7,8,9,10,11];
	var std_ac_luminance_nrcodes = [0,0,2,1,3,3,2,4,3,5,5,4,4,0,0,1,0x7d];
	var std_ac_luminance_values = [
			0x01,0x02,0x03,0x00,0x04,0x11,0x05,0x12,
			0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,
			0x22,0x71,0x14,0x32,0x81,0x91,0xa1,0x08,
			0x23,0x42,0xb1,0xc1,0x15,0x52,0xd1,0xf0,
			0x24,0x33,0x62,0x72,0x82,0x09,0x0a,0x16,
			0x17,0x18,0x19,0x1a,0x25,0x26,0x27,0x28,
			0x29,0x2a,0x34,0x35,0x36,0x37,0x38,0x39,
			0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,
			0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59,
			0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,
			0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,
			0x7a,0x83,0x84,0x85,0x86,0x87,0x88,0x89,
			0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,
			0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,
			0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6,
			0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,
			0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,
			0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe1,0xe2,
			0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,
			0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,
			0xf9,0xfa
		];
	
	var std_dc_chrominance_nrcodes = [0,0,3,1,1,1,1,1,1,1,1,1,0,0,0,0,0];
	var std_dc_chrominance_values = [0,1,2,3,4,5,6,7,8,9,10,11];
	var std_ac_chrominance_nrcodes = [0,0,2,1,2,4,4,3,4,7,5,4,4,0,1,2,0x77];
	var std_ac_chrominance_values = [
			0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,
			0x31,0x06,0x12,0x41,0x51,0x07,0x61,0x71,
			0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91,
			0xa1,0xb1,0xc1,0x09,0x23,0x33,0x52,0xf0,
			0x15,0x62,0x72,0xd1,0x0a,0x16,0x24,0x34,
			0xe1,0x25,0xf1,0x17,0x18,0x19,0x1a,0x26,
			0x27,0x28,0x29,0x2a,0x35,0x36,0x37,0x38,
			0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,
			0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58,
			0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68,
			0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,
			0x79,0x7a,0x82,0x83,0x84,0x85,0x86,0x87,
			0x88,0x89,0x8a,0x92,0x93,0x94,0x95,0x96,
			0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,
			0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,
			0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3,
			0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,
			0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,
			0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,
			0xea,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,
			0xf9,0xfa
		];
	
	function initQuantTables(sf){
			var YQT = [
				16, 11, 10, 16, 24, 40, 51, 61,
				12, 12, 14, 19, 26, 58, 60, 55,
				14, 13, 16, 24, 40, 57, 69, 56,
				14, 17, 22, 29, 51, 87, 80, 62,
				18, 22, 37, 56, 68,109,103, 77,
				24, 35, 55, 64, 81,104,113, 92,
				49, 64, 78, 87,103,121,120,101,
				72, 92, 95, 98,112,100,103, 99
			];
			
			for (var i = 0; i < 64; i++) {
				var t = ffloor((YQT[i]*sf+50)/100);
				if (t < 1) {
					t = 1;
				} else if (t > 255) {
					t = 255;
				}
				YTable[ZigZag[i]] = t;
			}
			var UVQT = [
				17, 18, 24, 47, 99, 99, 99, 99,
				18, 21, 26, 66, 99, 99, 99, 99,
				24, 26, 56, 99, 99, 99, 99, 99,
				47, 66, 99, 99, 99, 99, 99, 99,
				99, 99, 99, 99, 99, 99, 99, 99,
				99, 99, 99, 99, 99, 99, 99, 99,
				99, 99, 99, 99, 99, 99, 99, 99,
				99, 99, 99, 99, 99, 99, 99, 99
			];
			for (var j = 0; j < 64; j++) {
				var u = ffloor((UVQT[j]*sf+50)/100);
				if (u < 1) {
					u = 1;
				} else if (u > 255) {
					u = 255;
				}
				UVTable[ZigZag[j]] = u;
			}
			var aasf = [
				1.0, 1.387039845, 1.306562965, 1.175875602,
				1.0, 0.785694958, 0.541196100, 0.275899379
			];
			var k = 0;
			for (var row = 0; row < 8; row++)
			{
				for (var col = 0; col < 8; col++)
				{
					fdtbl_Y[k]  = (1.0 / (YTable [ZigZag[k]] * aasf[row] * aasf[col] * 8.0));
					fdtbl_UV[k] = (1.0 / (UVTable[ZigZag[k]] * aasf[row] * aasf[col] * 8.0));
					k++;
				}
			}
		}
		
		function computeHuffmanTbl(nrcodes, std_table){
			var codevalue = 0;
			var pos_in_table = 0;
			var HT = new Array();
			for (var k = 1; k <= 16; k++) {
				for (var j = 1; j <= nrcodes[k]; j++) {
					HT[std_table[pos_in_table]] = [];
					HT[std_table[pos_in_table]][0] = codevalue;
					HT[std_table[pos_in_table]][1] = k;
					pos_in_table++;
					codevalue++;
				}
				codevalue*=2;
			}
			return HT;
		}
		
		function initHuffmanTbl()
		{
			YDC_HT = computeHuffmanTbl(std_dc_luminance_nrcodes,std_dc_luminance_values);
			UVDC_HT = computeHuffmanTbl(std_dc_chrominance_nrcodes,std_dc_chrominance_values);
			YAC_HT = computeHuffmanTbl(std_ac_luminance_nrcodes,std_ac_luminance_values);
			UVAC_HT = computeHuffmanTbl(std_ac_chrominance_nrcodes,std_ac_chrominance_values);
		}
	
		function initCategoryNumber()
		{
			var nrlower = 1;
			var nrupper = 2;
			for (var cat = 1; cat <= 15; cat++) {
				//Positive numbers
				for (var nr = nrlower; nr<nrupper; nr++) {
					category[32767+nr] = cat;
					bitcode[32767+nr] = [];
					bitcode[32767+nr][1] = cat;
					bitcode[32767+nr][0] = nr;
				}
				//Negative numbers
				for (var nrneg =-(nrupper-1); nrneg<=-nrlower; nrneg++) {
					category[32767+nrneg] = cat;
					bitcode[32767+nrneg] = [];
					bitcode[32767+nrneg][1] = cat;
					bitcode[32767+nrneg][0] = nrupper-1+nrneg;
				}
				nrlower <<= 1;
				nrupper <<= 1;
			}
		}
		
		function initRGBYUVTable() {
			for(var i = 0; i < 256;i++) {
				RGB_YUV_TABLE[i]      		=  19595 * i;
				RGB_YUV_TABLE[(i+ 256)>>0] 	=  38470 * i;
				RGB_YUV_TABLE[(i+ 512)>>0] 	=   7471 * i + 0x8000;
				RGB_YUV_TABLE[(i+ 768)>>0] 	= -11059 * i;
				RGB_YUV_TABLE[(i+1024)>>0] 	= -21709 * i;
				RGB_YUV_TABLE[(i+1280)>>0] 	=  32768 * i + 0x807FFF;
				RGB_YUV_TABLE[(i+1536)>>0] 	= -27439 * i;
				RGB_YUV_TABLE[(i+1792)>>0] 	= - 5329 * i;
			}
		}
		
		// IO functions
		function writeBits(bs)
		{
			var value = bs[0];
			var posval = bs[1]-1;
			while ( posval >= 0 ) {
				if (value & (1 << posval) ) {
					bytenew |= (1 << bytepos);
				}
				posval--;
				bytepos--;
				if (bytepos < 0) {
					if (bytenew == 0xFF) {
						writeByte(0xFF);
						writeByte(0);
					}
					else {
						writeByte(bytenew);
					}
					bytepos=7;
					bytenew=0;
				}
			}
		}
	
		function writeByte(value)
		{
			//byteout.push(clt[value]); // write char directly instead of converting later
      byteout.push(value);
		}
	
		function writeWord(value)
		{
			writeByte((value>>8)&0xFF);
			writeByte((value   )&0xFF);
		}
		
		// DCT & quantization core
		function fDCTQuant(data, fdtbl)
		{
			var d0, d1, d2, d3, d4, d5, d6, d7;
			/* Pass 1: process rows. */
			var dataOff=0;
			var i;
			const I8 = 8;
			const I64 = 64;
			for (i=0; i<I8; ++i)
			{
				d0 = data[dataOff];
				d1 = data[dataOff+1];
				d2 = data[dataOff+2];
				d3 = data[dataOff+3];
				d4 = data[dataOff+4];
				d5 = data[dataOff+5];
				d6 = data[dataOff+6];
				d7 = data[dataOff+7];
				
				var tmp0 = d0 + d7;
				var tmp7 = d0 - d7;
				var tmp1 = d1 + d6;
				var tmp6 = d1 - d6;
				var tmp2 = d2 + d5;
				var tmp5 = d2 - d5;
				var tmp3 = d3 + d4;
				var tmp4 = d3 - d4;
	
				/* Even part */
				var tmp10 = tmp0 + tmp3;	/* phase 2 */
				var tmp13 = tmp0 - tmp3;
				var tmp11 = tmp1 + tmp2;
				var tmp12 = tmp1 - tmp2;
	
				data[dataOff] = tmp10 + tmp11; /* phase 3 */
				data[dataOff+4] = tmp10 - tmp11;
	
				var z1 = (tmp12 + tmp13) * 0.707106781; /* c4 */
				data[dataOff+2] = tmp13 + z1; /* phase 5 */
				data[dataOff+6] = tmp13 - z1;
	
				/* Odd part */
				tmp10 = tmp4 + tmp5; /* phase 2 */
				tmp11 = tmp5 + tmp6;
				tmp12 = tmp6 + tmp7;
	
				/* The rotator is modified from fig 4-8 to avoid extra negations. */
				var z5 = (tmp10 - tmp12) * 0.382683433; /* c6 */
				var z2 = 0.541196100 * tmp10 + z5; /* c2-c6 */
				var z4 = 1.306562965 * tmp12 + z5; /* c2+c6 */
				var z3 = tmp11 * 0.707106781; /* c4 */
	
				var z11 = tmp7 + z3;	/* phase 5 */
				var z13 = tmp7 - z3;
	
				data[dataOff+5] = z13 + z2;	/* phase 6 */
				data[dataOff+3] = z13 - z2;
				data[dataOff+1] = z11 + z4;
				data[dataOff+7] = z11 - z4;
	
				dataOff += 8; /* advance pointer to next row */
			}
	
			/* Pass 2: process columns. */
			dataOff = 0;
			for (i=0; i<I8; ++i)
			{
				d0 = data[dataOff];
				d1 = data[dataOff + 8];
				d2 = data[dataOff + 16];
				d3 = data[dataOff + 24];
				d4 = data[dataOff + 32];
				d5 = data[dataOff + 40];
				d6 = data[dataOff + 48];
				d7 = data[dataOff + 56];
				
				var tmp0p2 = d0 + d7;
				var tmp7p2 = d0 - d7;
				var tmp1p2 = d1 + d6;
				var tmp6p2 = d1 - d6;
				var tmp2p2 = d2 + d5;
				var tmp5p2 = d2 - d5;
				var tmp3p2 = d3 + d4;
				var tmp4p2 = d3 - d4;
	
				/* Even part */
				var tmp10p2 = tmp0p2 + tmp3p2;	/* phase 2 */
				var tmp13p2 = tmp0p2 - tmp3p2;
				var tmp11p2 = tmp1p2 + tmp2p2;
				var tmp12p2 = tmp1p2 - tmp2p2;
	
				data[dataOff] = tmp10p2 + tmp11p2; /* phase 3 */
				data[dataOff+32] = tmp10p2 - tmp11p2;
	
				var z1p2 = (tmp12p2 + tmp13p2) * 0.707106781; /* c4 */
				data[dataOff+16] = tmp13p2 + z1p2; /* phase 5 */
				data[dataOff+48] = tmp13p2 - z1p2;
	
				/* Odd part */
				tmp10p2 = tmp4p2 + tmp5p2; /* phase 2 */
				tmp11p2 = tmp5p2 + tmp6p2;
				tmp12p2 = tmp6p2 + tmp7p2;
	
				/* The rotator is modified from fig 4-8 to avoid extra negations. */
				var z5p2 = (tmp10p2 - tmp12p2) * 0.382683433; /* c6 */
				var z2p2 = 0.541196100 * tmp10p2 + z5p2; /* c2-c6 */
				var z4p2 = 1.306562965 * tmp12p2 + z5p2; /* c2+c6 */
				var z3p2 = tmp11p2 * 0.707106781; /* c4 */
	
				var z11p2 = tmp7p2 + z3p2;	/* phase 5 */
				var z13p2 = tmp7p2 - z3p2;
	
				data[dataOff+40] = z13p2 + z2p2; /* phase 6 */
				data[dataOff+24] = z13p2 - z2p2;
				data[dataOff+ 8] = z11p2 + z4p2;
				data[dataOff+56] = z11p2 - z4p2;
	
				dataOff++; /* advance pointer to next column */
			}
	
			// Quantize/descale the coefficients
			var fDCTQuant;
			for (i=0; i<I64; ++i)
			{
				// Apply the quantization and scaling factor & Round to nearest integer
				fDCTQuant = data[i]*fdtbl[i];
				outputfDCTQuant[i] = (fDCTQuant > 0.0) ? ((fDCTQuant + 0.5)|0) : ((fDCTQuant - 0.5)|0);
				//outputfDCTQuant[i] = fround(fDCTQuant);

			}
			return outputfDCTQuant;
		}
		
		function writeAPP0()
		{
			writeWord(0xFFE0); // marker
			writeWord(16); // length
			writeByte(0x4A); // J
			writeByte(0x46); // F
			writeByte(0x49); // I
			writeByte(0x46); // F
			writeByte(0); // = "JFIF",'\0'
			writeByte(1); // versionhi
			writeByte(1); // versionlo
			writeByte(0); // xyunits
			writeWord(1); // xdensity
			writeWord(1); // ydensity
			writeByte(0); // thumbnwidth
			writeByte(0); // thumbnheight
		}
	
		function writeSOF0(width, height)
		{
			writeWord(0xFFC0); // marker
			writeWord(17);   // length, truecolor YUV JPG
			writeByte(8);    // precision
			writeWord(height);
			writeWord(width);
			writeByte(3);    // nrofcomponents
			writeByte(1);    // IdY
			writeByte(0x11); // HVY
			writeByte(0);    // QTY
			writeByte(2);    // IdU
			writeByte(0x11); // HVU
			writeByte(1);    // QTU
			writeByte(3);    // IdV
			writeByte(0x11); // HVV
			writeByte(1);    // QTV
		}
	
		function writeDQT()
		{
			writeWord(0xFFDB); // marker
			writeWord(132);	   // length
			writeByte(0);
			for (var i=0; i<64; i++) {
				writeByte(YTable[i]);
			}
			writeByte(1);
			for (var j=0; j<64; j++) {
				writeByte(UVTable[j]);
			}
		}
	
		function writeDHT()
		{
			writeWord(0xFFC4); // marker
			writeWord(0x01A2); // length
	
			writeByte(0); // HTYDCinfo
			for (var i=0; i<16; i++) {
				writeByte(std_dc_luminance_nrcodes[i+1]);
			}
			for (var j=0; j<=11; j++) {
				writeByte(std_dc_luminance_values[j]);
			}
	
			writeByte(0x10); // HTYACinfo
			for (var k=0; k<16; k++) {
				writeByte(std_ac_luminance_nrcodes[k+1]);
			}
			for (var l=0; l<=161; l++) {
				writeByte(std_ac_luminance_values[l]);
			}
	
			writeByte(1); // HTUDCinfo
			for (var m=0; m<16; m++) {
				writeByte(std_dc_chrominance_nrcodes[m+1]);
			}
			for (var n=0; n<=11; n++) {
				writeByte(std_dc_chrominance_values[n]);
			}
	
			writeByte(0x11); // HTUACinfo
			for (var o=0; o<16; o++) {
				writeByte(std_ac_chrominance_nrcodes[o+1]);
			}
			for (var p=0; p<=161; p++) {
				writeByte(std_ac_chrominance_values[p]);
			}
		}
	
		function writeSOS()
		{
			writeWord(0xFFDA); // marker
			writeWord(12); // length
			writeByte(3); // nrofcomponents
			writeByte(1); // IdY
			writeByte(0); // HTY
			writeByte(2); // IdU
			writeByte(0x11); // HTU
			writeByte(3); // IdV
			writeByte(0x11); // HTV
			writeByte(0); // Ss
			writeByte(0x3f); // Se
			writeByte(0); // Bf
		}
		
		function processDU(CDU, fdtbl, DC, HTDC, HTAC){
			var EOB = HTAC[0x00];
			var M16zeroes = HTAC[0xF0];
			var pos;
			const I16 = 16;
			const I63 = 63;
			const I64 = 64;
			var DU_DCT = fDCTQuant(CDU, fdtbl);
			//ZigZag reorder
			for (var j=0;j<I64;++j) {
				DU[ZigZag[j]]=DU_DCT[j];
			}
			var Diff = DU[0] - DC; DC = DU[0];
			//Encode DC
			if (Diff==0) {
				writeBits(HTDC[0]); // Diff might be 0
			} else {
				pos = 32767+Diff;
				writeBits(HTDC[category[pos]]);
				writeBits(bitcode[pos]);
			}
			//Encode ACs
			var end0pos = 63; // was const... which is crazy
			for (; (end0pos>0)&&(DU[end0pos]==0); end0pos--) {};
			//end0pos = first element in reverse order !=0
			if ( end0pos == 0) {
				writeBits(EOB);
				return DC;
			}
			var i = 1;
			var lng;
			while ( i <= end0pos ) {
				var startpos = i;
				for (; (DU[i]==0) && (i<=end0pos); ++i) {}
				var nrzeroes = i-startpos;
				if ( nrzeroes >= I16 ) {
					lng = nrzeroes>>4;
					for (var nrmarker=1; nrmarker <= lng; ++nrmarker)
						writeBits(M16zeroes);
					nrzeroes = nrzeroes&0xF;
				}
				pos = 32767+DU[i];
				writeBits(HTAC[(nrzeroes<<4)+category[pos]]);
				writeBits(bitcode[pos]);
				i++;
			}
			if ( end0pos != I63 ) {
				writeBits(EOB);
			}
			return DC;
		}

		function initCharLookupTable(){
			var sfcc = String.fromCharCode;
			for(var i=0; i < 256; i++){ ///// ACHTUNG // 255
				clt[i] = sfcc(i);
			}
		}
		
		this.encode = function(image,quality) // image data object
		{
			var time_start = new Date().getTime();
			
			if(quality) setQuality(quality);
			
			// Initialize bit writer
			byteout = new Array();
			bytenew=0;
			bytepos=7;
	
			// Add JPEG headers
			writeWord(0xFFD8); // SOI
			writeAPP0();
			writeDQT();
			writeSOF0(image.width,image.height);
			writeDHT();
			writeSOS();

	
			// Encode 8x8 macroblocks
			var DCY=0;
			var DCU=0;
			var DCV=0;
			
			bytenew=0;
			bytepos=7;
			
			
			this.encode.displayName = "_encode_";

			var imageData = image.data;
			var width = image.width;
			var height = image.height;

			var quadWidth = width*4;
			var tripleWidth = width*3;
			
			var x, y = 0;
			var r, g, b;
			var start,p, col,row,pos;
			while(y < height){
				x = 0;
				while(x < quadWidth){
				start = quadWidth * y + x;
				p = start;
				col = -1;
				row = 0;
				
				for(pos=0; pos < 64; pos++){
					row = pos >> 3;// /8
					col = ( pos & 7 ) * 4; // %8
					p = start + ( row * quadWidth ) + col;		
					
					if(y+row >= height){ // padding bottom
						p-= (quadWidth*(y+1+row-height));
					}

					if(x+col >= quadWidth){ // padding right	
						p-= ((x+col) - quadWidth +4)
					}
					
					r = imageData[ p++ ];
					g = imageData[ p++ ];
					b = imageData[ p++ ];
					
					
					/* // calculate YUV values dynamically
					YDU[pos]=((( 0.29900)*r+( 0.58700)*g+( 0.11400)*b))-128; //-0x80
					UDU[pos]=(((-0.16874)*r+(-0.33126)*g+( 0.50000)*b));
					VDU[pos]=((( 0.50000)*r+(-0.41869)*g+(-0.08131)*b));
					*/
					
					// use lookup table (slightly faster)
					YDU[pos] = ((RGB_YUV_TABLE[r]             + RGB_YUV_TABLE[(g +  256)>>0] + RGB_YUV_TABLE[(b +  512)>>0]) >> 16)-128;
					UDU[pos] = ((RGB_YUV_TABLE[(r +  768)>>0] + RGB_YUV_TABLE[(g + 1024)>>0] + RGB_YUV_TABLE[(b + 1280)>>0]) >> 16)-128;
					VDU[pos] = ((RGB_YUV_TABLE[(r + 1280)>>0] + RGB_YUV_TABLE[(g + 1536)>>0] + RGB_YUV_TABLE[(b + 1792)>>0]) >> 16)-128;

				}
				
				DCY = processDU(YDU, fdtbl_Y, DCY, YDC_HT, YAC_HT);
				DCU = processDU(UDU, fdtbl_UV, DCU, UVDC_HT, UVAC_HT);
				DCV = processDU(VDU, fdtbl_UV, DCV, UVDC_HT, UVAC_HT);
				x+=32;
				}
				y+=8;
			}
			
			
			////////////////////////////////////////////////////////////////
	
			// Do the bit alignment of the EOI marker
			if ( bytepos >= 0 ) {
				var fillbits = [];
				fillbits[1] = bytepos+1;
				fillbits[0] = (1<<(bytepos+1))-1;
				writeBits(fillbits);
			}
	
			writeWord(0xFFD9); //EOI

      //return new Uint8Array(byteout);
      return new Buffer(byteout);

			var jpegDataUri = 'data:image/jpeg;base64,' + btoa(byteout.join(''));
			
			byteout = [];
			
			// benchmarking
			var duration = new Date().getTime() - time_start;
    		//console.log('Encoding time: '+ duration + 'ms');
    		//
			
			return jpegDataUri			
	}
	
	function setQuality(quality){
		if (quality <= 0) {
			quality = 1;
		}
		if (quality > 100) {
			quality = 100;
		}
		
		if(currentQuality == quality) return // don't recalc if unchanged
		
		var sf = 0;
		if (quality < 50) {
			sf = Math.floor(5000 / quality);
		} else {
			sf = Math.floor(200 - quality*2);
		}
		
		initQuantTables(sf);
		currentQuality = quality;
		//console.log('Quality set to: '+quality +'%');
	}
	
	function init(){
		var time_start = new Date().getTime();
		if(!quality) quality = 50;
		// Create tables
		initCharLookupTable()
		initHuffmanTbl();
		initCategoryNumber();
		initRGBYUVTable();
		
		setQuality(quality);
		var duration = new Date().getTime() - time_start;
    	//console.log('Initialization '+ duration + 'ms');
	}
	
	init();
	
};
module.exports = encode;

function encode(imgData, qu) {
  if (typeof qu === 'undefined') qu = 50;
  var encoder = new JPEGEncoder(qu);
	var data = encoder.encode(imgData, qu);
  return {
    data: data,
    width: imgData.width,
    height: imgData.height
  };
}

// helper function to get the imageData of an existing image on the current page.
function getImageDataFromImage(idOrElement){
	var theImg = (typeof(idOrElement)=='string')? document.getElementById(idOrElement):idOrElement;
	var cvs = document.createElement('canvas');
	cvs.width = theImg.width;
	cvs.height = theImg.height;
	var ctx = cvs.getContext("2d");
	ctx.drawImage(theImg,0,0);
	
	return (ctx.getImageData(0, 0, cvs.width, cvs.height));
}

}).call(this,require("buffer").Buffer)
},{"buffer":46}],963:[function(require,module,exports){
(function (Buffer){
'use strict'

var ContentStream = require('contentstream')
var GifEncoder = require('gif-encoder')
var jpegJs = require('jpeg-js')
var PNG = require('pngjs-nozlib').PNG
var ndarray = require('ndarray')
var ops = require('ndarray-ops')
var through = require('through')

function handleData (array, data, frame) {
  var i, j, ptr = 0, c
  if (array.shape.length === 4) {
    return handleData(array.pick(frame), data, 0)
  } else if (array.shape.length === 3) {
    if (array.shape[2] === 3) {
      ops.assign(
        ndarray(data,
          [array.shape[0], array.shape[1], 3],
          [4, 4 * array.shape[0], 1]),
        array)
      ops.assigns(
        ndarray(data,
          [array.shape[0] * array.shape[1]],
          [4],
          3),
        255)
    } else if (array.shape[2] === 4) {
      ops.assign(
        ndarray(data,
          [array.shape[0], array.shape[1], 4],
          [4, array.shape[0] * 4, 1]),
        array)
    } else if (array.shape[2] === 1) {
      ops.assign(
        ndarray(data,
          [array.shape[0], array.shape[1], 3],
          [4, 4 * array.shape[0], 1]),
        ndarray(array.data,
          [array.shape[0], array.shape[1], 3],
          [array.stride[0], array.stride[1], 0],
          array.offset))
      ops.assigns(
        ndarray(data,
          [array.shape[0] * array.shape[1]],
          [4],
          3),
        255)
    } else {
      return new Error('Incompatible array shape')
    }
  } else if (array.shape.length === 2) {
    ops.assign(
      ndarray(data,
        [array.shape[0], array.shape[1], 3],
        [4, 4 * array.shape[0], 1]),
      ndarray(array.data,
        [array.shape[0], array.shape[1], 3],
        [array.stride[0], array.stride[1], 0],
        array.offset))
    ops.assigns(
      ndarray(data,
        [array.shape[0] * array.shape[1]],
        [4],
        3),
      255)
  } else {
    return new Error('Incompatible array shape')
  }
  return data
}

function haderror (err) {
  var result = through()
  result.emit('error', err)
  return result
}

module.exports = function savePixels (array, type, options) {
  options = options || {}
  switch (type.toUpperCase()) {
    case 'JPG':
    case '.JPG':
    case 'JPEG':
    case '.JPEG':
    case 'JPE':
    case '.JPE':
      var width = array.shape[0]
      var height = array.shape[1]
      var data = new Buffer(width * height * 4)
      data = handleData(array, data)
      var rawImageData = {
        data: data,
        width: width,
        height: height
      }
      var jpegImageData = jpegJs.encode(rawImageData, options.quality)
      return new ContentStream(jpegImageData.data)

    case 'GIF':
    case '.GIF':
      var frames = array.shape.length === 4 ? array.shape[0] : 1
      var width = array.shape.length === 4 ? array.shape[1] : array.shape[0]
      var height = array.shape.length === 4 ? array.shape[2] : array.shape[1]
      var data = new Buffer(width * height * 4)
      var gif = new GifEncoder(width, height)
      gif.writeHeader()
      for (var i = 0; i < frames; i++) {
        data = handleData(array, data, i)
        gif.addFrame(data)
      }
      gif.finish()
      return gif

    case 'PNG':
    case '.PNG':
      var png = new PNG({
        width: array.shape[0],
        height: array.shape[1]
      })
      var data = handleData(array, png.data)
      if (typeof data === 'Error') return haderror(data)
      png.data = data
      return png.pack()

    case 'CANVAS':
      var canvas = document.createElement('canvas')
      var context = canvas.getContext('2d')
      canvas.width = array.shape[0]
      canvas.height = array.shape[1]
      var imageData = context.getImageData(0, 0, canvas.width, canvas.height)
      var data = imageData.data
      data = handleData(array, data)
      if (typeof data === 'Error') return haderror(data)
      context.putImageData(imageData, 0, 0)
      return canvas

    default:
      return haderror(new Error('Unsupported file type: ' + type))
  }
}

}).call(this,require("buffer").Buffer)
},{"buffer":46,"contentstream":66,"gif-encoder":114,"jpeg-js":960,"ndarray":443,"ndarray-ops":437,"pngjs-nozlib":917,"through":984}],964:[function(require,module,exports){
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (global.ShelfPack = factory());
}(this, function () {

/**
 * Create a new ShelfPack bin allocator.
 *
 * Uses the Shelf Best Height Fit algorithm from
 * http://clb.demon.fi/files/RectangleBinPack.pdf
 *
 * @class  ShelfPack
 * @param  {number}  [w=64]  Initial width of the sprite
 * @param  {number}  [h=64]  Initial width of the sprite
 * @param  {Object}  [options]
 * @param  {boolean} [options.autoResize=false]  If `true`, the sprite will automatically grow
 * @example
 * var sprite = new ShelfPack(64, 64, { autoResize: false });
 */
function ShelfPack(w, h, options) {
    options = options || {};
    this.w = w || 64;
    this.h = h || 64;
    this.autoResize = !!options.autoResize;
    this.shelves = [];
    this.stats = {};
    this.count = function(h) {
        this.stats[h] = (this.stats[h] | 0) + 1;
    };
}

/**
 * Batch pack multiple bins into the sprite.
 *
 * @param   {Array}   bins Array of requested bins - each object should have `width`, `height` (or `w`, `h`) properties
 * @param   {Object}  [options]
 * @param   {boolean} [options.inPlace=false] If `true`, the supplied bin objects will be updated inplace with `x` and `y` properties
 * @returns {Array}   Array of allocated bins - each bin is an object with `x`, `y`, `w`, `h` properties
 * @example
 * var bins = [
 *     { id: 'a', width: 12, height: 12 },
 *     { id: 'b', width: 12, height: 16 },
 *     { id: 'c', width: 12, height: 24 }
 * ];
 * var results = sprite.pack(bins, { inPlace: false });
 */
ShelfPack.prototype.pack = function(bins, options) {
    bins = [].concat(bins);
    options = options || {};

    var results = [],
        w, h, allocation;

    for (var i = 0; i < bins.length; i++) {
        w = bins[i].w || bins[i].width;
        h = bins[i].h || bins[i].height;
        if (w && h) {
            allocation = this.packOne(w, h);
            if (!allocation) {
                continue;
            }
            if (options.inPlace) {
                bins[i].x = allocation.x;
                bins[i].y = allocation.y;
            }
            results.push(allocation);
        }
    }

    // Shrink the width/height of the sprite to the bare minimum.
    // Since shelf-pack doubles first width, then height when running out of shelf space
    // this can result in fairly large unused space both in width and height if that happens
    // towards the end of bin packing.
    if (this.shelves.length > 0) {
        var w2 = 0;
        var h2 = 0;

        for (var j = 0; j < this.shelves.length; j++) {
            var shelf = this.shelves[j];
            h2 += shelf.h;
            w2 = Math.max(shelf.w - shelf.free, w2);
        }

        this.resize(w2, h2);
    }

    return results;
};

/**
 * Pack a single bin into the sprite.
 *
 * @param   {number}  w   Width of the bin to allocate
 * @param   {number}  h   Height of the bin to allocate
 * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
 * @example
 * var results = sprite.packOne(12, 16);
 */
ShelfPack.prototype.packOne = function(w, h) {
    var y = 0,
        best = { shelf: -1, waste: Infinity },
        shelf, waste;

    // find the best shelf
    for (var i = 0; i < this.shelves.length; i++) {
        shelf = this.shelves[i];
        y += shelf.h;

        // exactly the right height with width to spare, pack it..
        if (h === shelf.h && w <= shelf.free) {
            this.count(h);
            return shelf.alloc(w, h);
        }
        // not enough height or width, skip it..
        if (h > shelf.h || w > shelf.free) {
            continue;
        }
        // maybe enough height or width, minimize waste..
        if (h < shelf.h && w <= shelf.free) {
            waste = shelf.h - h;
            if (waste < best.waste) {
                best.waste = waste;
                best.shelf = i;
            }
        }
    }

    if (best.shelf !== -1) {
        shelf = this.shelves[best.shelf];
        this.count(h);
        return shelf.alloc(w, h);
    }

    // add shelf..
    if (h <= (this.h - y) && w <= this.w) {
        shelf = new Shelf(y, this.w, h);
        this.shelves.push(shelf);
        this.count(h);
        return shelf.alloc(w, h);
    }

    // no more space..
    // If `autoResize` option is set, grow the sprite as follows:
    //  * double whichever sprite dimension is smaller (`w1` or `h1`)
    //  * if sprite dimensions are equal, grow width before height
    //  * accomodate very large bin requests (big `w` or `h`)
    if (this.autoResize) {
        var h1, h2, w1, w2;

        h1 = h2 = this.h;
        w1 = w2 = this.w;

        if (w1 <= h1 || w > w1) {   // grow width..
            w2 = Math.max(w, w1) * 2;
        }
        if (h1 < w1 || h > h1) {    // grow height..
            h2 = Math.max(h, h1) * 2;
        }

        this.resize(w2, h2);
        return this.packOne(w, h);  // retry
    }

    return null;
};

/**
 * Clear the sprite.
 *
 * @example
 * sprite.clear();
 */
ShelfPack.prototype.clear = function() {
    this.shelves = [];
    this.stats = {};
};

/**
 * Resize the sprite.
 *
 * @param   {number}  w  Requested new sprite width
 * @param   {number}  h  Requested new sprite height
 * @returns {boolean} `true` if resize succeeded, `false` if failed
 * @example
 * sprite.resize(256, 256);
 */
ShelfPack.prototype.resize = function(w, h) {
    this.w = w;
    this.h = h;
    for (var i = 0; i < this.shelves.length; i++) {
        this.shelves[i].resize(w);
    }
    return true;
};



/**
 * Create a new Shelf.
 *
 * @private
 * @class  Shelf
 * @param  {number}  y   Top coordinate of the new shelf
 * @param  {number}  w   Width of the new shelf
 * @param  {number}  h   Height of the new shelf
 * @example
 * var shelf = new Shelf(64, 512, 24);
 */
function Shelf(y, w, h) {
    this.x = 0;
    this.y = y;
    this.w = this.free = w;
    this.h = h;
}

/**
 * Allocate a single bin into the shelf.
 *
 * @private
 * @param   {number}  w   Width of the bin to allocate
 * @param   {number}  h   Height of the bin to allocate
 * @returns {Object}  Allocated bin object with `x`, `y`, `w`, `h` properties, or `null` if allocation failed
 * @example
 * shelf.alloc(12, 16);
 */
Shelf.prototype.alloc = function(w, h) {
    if (w > this.free || h > this.h) {
        return null;
    }
    var x = this.x;
    this.x += w;
    this.free -= w;
    return { x: x, y: this.y, w: w, h: h, width: w, height: h };
};

/**
 * Resize the shelf.
 *
 * @private
 * @param   {number}  w  Requested new width of the shelf
 * @returns {boolean} true if resize succeeded, false if failed
 * @example
 * shelf.resize(512);
 */
Shelf.prototype.resize = function(w) {
    this.free += (w - this.w);
    this.w = w;
    return true;
};

return ShelfPack;

}));
},{}],965:[function(require,module,exports){
"use strict"

module.exports = function signum(x) {
  if(x < 0) { return -1 }
  if(x > 0) { return 1 }
  return 0.0
}
},{}],966:[function(require,module,exports){
'use strict'

module.exports = boundary

var bnd = require('boundary-cells')
var reduce = require('reduce-simplicial-complex')

function boundary(cells) {
  return reduce(bnd(cells))
}

},{"boundary-cells":35,"reduce-simplicial-complex":945}],967:[function(require,module,exports){
'use strict'

module.exports = extractContour

var ndarray = require('ndarray')
var pool    = require('typedarray-pool')
var ndsort  = require('ndarray-sort')

var contourAlgorithm = require('./lib/codegen')

function getDimension(cells) {
  var numCells = cells.length
  var d = 0
  for(var i=0; i<numCells; ++i) {
    d = Math.max(d, cells[i].length)|0
  }
  return d-1
}

function getSigns(values, level) {
  var numVerts    = values.length
  var vertexSigns = pool.mallocUint8(numVerts)
  for(var i=0; i<numVerts; ++i) {
    vertexSigns[i] = (values[i] < level)|0
  }
  return vertexSigns
}

function getEdges(cells, d) {
  var numCells = cells.length
  var maxEdges = ((d * (d+1)/2) * numCells)|0
  var edges    = pool.mallocUint32(maxEdges*2)
  var ePtr     = 0
  for(var i=0; i<numCells; ++i) {
    var c = cells[i]
    var d = c.length
    for(var j=0; j<d; ++j) {
      for(var k=0; k<j; ++k) {
        var a = c[k]
        var b = c[j]
        edges[ePtr++] = Math.min(a,b)|0
        edges[ePtr++] = Math.max(a,b)|0
      }
    }
  }
  var nedges = (ePtr/2)|0
  ndsort(ndarray(edges, [nedges,2])) 
  var ptr = 2
  for(var i=2; i<ePtr; i+=2) {
    if(edges[i-2] === edges[i] &&
       edges[i-1] === edges[i+1]) {
      continue
    }
    edges[ptr++] = edges[i]
    edges[ptr++] = edges[i+1]
  }

  return ndarray(edges, [(ptr/2)|0, 2])
}

function getCrossingWeights(edges, values, signs, level) {
  var edata     = edges.data
  var numEdges  = edges.shape[0]
  var weights   = pool.mallocDouble(numEdges)
  var ptr       = 0
  for(var i=0; i<numEdges; ++i) {
    var a  = edata[2*i]
    var b  = edata[2*i+1]
    if(signs[a] === signs[b]) {
      continue
    }
    var va = values[a]
    var vb = values[b]
    edata[2*ptr]     = a
    edata[2*ptr+1]   = b
    weights[ptr++]   = (vb - level) / (vb - va)
  }
  edges.shape[0] = ptr
  return ndarray(weights, [ptr])
}

function getCascade(edges, numVerts) {
  var result   = pool.mallocInt32(numVerts*2)
  var numEdges = edges.shape[0]
  var edata    = edges.data
  result[0]    = 0
  var lastV    = 0
  for(var i=0; i<numEdges; ++i) {
    var a = edata[2*i]
    if(a !== lastV) {
      result[2*lastV+1] = i
      while(++lastV < a) {
        result[2*lastV] = i
        result[2*lastV+1] = i
      }
      result[2*lastV] = i
    }
  }
  result[2*lastV+1] = numEdges
  while(++lastV < numVerts) {
    result[2*lastV] = result[2*lastV+1] = numEdges
  }
  return result
}

function unpackEdges(edges) {
  var ne = edges.shape[0]|0
  var edata = edges.data
  var result = new Array(ne)
  for(var i=0; i<ne; ++i) {
    result[i] = [edata[2*i], edata[2*i+1]]
  }
  return result
}

function extractContour(cells, values, level, d) {
  level = level||0.0

  //If user didn't specify `d`, use brute force scan
  if(typeof d === 'undefined') {
    d = getDimension(cells)
  }

  //Count number of cells
  var numCells = cells.length
  if(numCells === 0 || d < 1) {
    return {
      cells:         [],
      vertexIds:     [],
      vertexWeights: []
    }
  }

  //Read in vertex signs
  var vertexSigns = getSigns(values, +level)

  //First get 1-skeleton, find all crossings
  var edges   = getEdges(cells, d)
  var weights = getCrossingWeights(edges, values, vertexSigns, +level)

  //Build vertex cascade to speed up binary search
  var vcascade = getCascade(edges, values.length|0)

  //Then construct cells
  var faces = contourAlgorithm(d)(cells, edges.data, vcascade, vertexSigns)

  //Unpack data into pretty format
  var uedges   = unpackEdges(edges)
  var uweights = [].slice.call(weights.data, 0, weights.shape[0])

  //Release data
  pool.free(vertexSigns)
  pool.free(edges.data)
  pool.free(weights.data)
  pool.free(vcascade)
  
  return {
    cells:         faces,
    vertexIds:     uedges,
    vertexWeights: uweights
  }
}
},{"./lib/codegen":968,"ndarray":443,"ndarray-sort":441,"typedarray-pool":992}],968:[function(require,module,exports){
'use strict'

module.exports = getPolygonizer

var pool = require('typedarray-pool')
var createMSTable = require('marching-simplex-table')

var CACHE = {}

function createCellPolygonizer(d) {
  var maxCellSize = 0
  var tables = new Array(d+1)
  tables[0] = [ [] ]
  for(var i=1; i<=d; ++i) {
    var tab = tables[i] = createMSTable(i)
    for(var j=0; j<tab.length; ++j) {
      maxCellSize = Math.max(maxCellSize, tab[i].length)
    }
  }

  var code  = [
  'function B(C,E,i,j){',
    'var a=Math.min(i,j)|0,b=Math.max(i,j)|0,l=C[2*a],h=C[2*a+1];',
    'while(l<h){',
      'var m=(l+h)>>1,v=E[2*m+1];',
      'if(v===b){return m}',
      'if(b<v){h=m}else{l=m+1}',
    '}',
    'return l;',
  '};',
  'function getContour', d, 'd(F,E,C,S){',
    'var n=F.length,R=[];',
    'for(var i=0;i<n;++i){var c=F[i],l=c.length;'
  ]

  function generateCase(facets) {
    if(facets.length <= 0) {
      return
    }
    code.push('R.push(')
    for(var i=0; i<facets.length; ++i) {
      var facet = facets[i]
      if(i > 0) {
        code.push(',')
      }
      code.push('[')
      for(var j=0; j<facet.length; ++j) {
        var f = facet[j]
        if(j > 0) {
          code.push(',')
        }
        code.push('B(C,E,c[', f[0], '],c[', f[1], '])')
      }
      code.push(']')
    }
    code.push(');')
  }

  for(var i=d+1; i>1; --i) {
    if(i < d+1) {
      code.push('else ')
    }
    code.push('if(l===', i, '){')

    //Generate mask
    var maskStr = []
    for(var j=0; j<i; ++j) {
      maskStr.push('(S[c['+j+']]<<'+j+')')
    }

    //Perform table look up
    code.push('var M=', maskStr.join('+'), 
      ';if(M===0||M===', (1<<i)-1, 
        '){continue}switch(M){')

    var tab = tables[i-1]
    for(var j=0; j<tab.length; ++j) {
      code.push('case ', j, ':')
      generateCase(tab[j])
      code.push('break;')
    }
    code.push('}}')
  }
  code.push('}return R;};return getContour', d, 'd')

  var proc = new Function('pool', code.join(''))
  return proc(pool)
}

function getPolygonizer(d) {
  var alg = CACHE[d]
  if(!alg) {
    alg = CACHE[d] = createCellPolygonizer(d) 
  }
  return alg
}
},{"marching-simplex-table":421,"typedarray-pool":992}],969:[function(require,module,exports){
"use strict"; "use restrict";

var bits      = require("bit-twiddle")
  , UnionFind = require("union-find")

//Returns the dimension of a cell complex
function dimension(cells) {
  var d = 0
    , max = Math.max
  for(var i=0, il=cells.length; i<il; ++i) {
    d = max(d, cells[i].length)
  }
  return d-1
}
exports.dimension = dimension

//Counts the number of vertices in faces
function countVertices(cells) {
  var vc = -1
    , max = Math.max
  for(var i=0, il=cells.length; i<il; ++i) {
    var c = cells[i]
    for(var j=0, jl=c.length; j<jl; ++j) {
      vc = max(vc, c[j])
    }
  }
  return vc+1
}
exports.countVertices = countVertices

//Returns a deep copy of cells
function cloneCells(cells) {
  var ncells = new Array(cells.length)
  for(var i=0, il=cells.length; i<il; ++i) {
    ncells[i] = cells[i].slice(0)
  }
  return ncells
}
exports.cloneCells = cloneCells

//Ranks a pair of cells up to permutation
function compareCells(a, b) {
  var n = a.length
    , t = a.length - b.length
    , min = Math.min
  if(t) {
    return t
  }
  switch(n) {
    case 0:
      return 0;
    case 1:
      return a[0] - b[0];
    case 2:
      var d = a[0]+a[1]-b[0]-b[1]
      if(d) {
        return d
      }
      return min(a[0],a[1]) - min(b[0],b[1])
    case 3:
      var l1 = a[0]+a[1]
        , m1 = b[0]+b[1]
      d = l1+a[2] - (m1+b[2])
      if(d) {
        return d
      }
      var l0 = min(a[0], a[1])
        , m0 = min(b[0], b[1])
        , d  = min(l0, a[2]) - min(m0, b[2])
      if(d) {
        return d
      }
      return min(l0+a[2], l1) - min(m0+b[2], m1)
    
    //TODO: Maybe optimize n=4 as well?
    
    default:
      var as = a.slice(0)
      as.sort()
      var bs = b.slice(0)
      bs.sort()
      for(var i=0; i<n; ++i) {
        t = as[i] - bs[i]
        if(t) {
          return t
        }
      }
      return 0
  }
}
exports.compareCells = compareCells

function compareZipped(a, b) {
  return compareCells(a[0], b[0])
}

//Puts a cell complex into normal order for the purposes of findCell queries
function normalize(cells, attr) {
  if(attr) {
    var len = cells.length
    var zipped = new Array(len)
    for(var i=0; i<len; ++i) {
      zipped[i] = [cells[i], attr[i]]
    }
    zipped.sort(compareZipped)
    for(var i=0; i<len; ++i) {
      cells[i] = zipped[i][0]
      attr[i] = zipped[i][1]
    }
    return cells
  } else {
    cells.sort(compareCells)
    return cells
  }
}
exports.normalize = normalize

//Removes all duplicate cells in the complex
function unique(cells) {
  if(cells.length === 0) {
    return []
  }
  var ptr = 1
    , len = cells.length
  for(var i=1; i<len; ++i) {
    var a = cells[i]
    if(compareCells(a, cells[i-1])) {
      if(i === ptr) {
        ptr++
        continue
      }
      cells[ptr++] = a
    }
  }
  cells.length = ptr
  return cells
}
exports.unique = unique;

//Finds a cell in a normalized cell complex
function findCell(cells, c) {
  var lo = 0
    , hi = cells.length-1
    , r  = -1
  while (lo <= hi) {
    var mid = (lo + hi) >> 1
      , s   = compareCells(cells[mid], c)
    if(s <= 0) {
      if(s === 0) {
        r = mid
      }
      lo = mid + 1
    } else if(s > 0) {
      hi = mid - 1
    }
  }
  return r
}
exports.findCell = findCell;

//Builds an index for an n-cell.  This is more general than dual, but less efficient
function incidence(from_cells, to_cells) {
  var index = new Array(from_cells.length)
  for(var i=0, il=index.length; i<il; ++i) {
    index[i] = []
  }
  var b = []
  for(var i=0, n=to_cells.length; i<n; ++i) {
    var c = to_cells[i]
    var cl = c.length
    for(var k=1, kn=(1<<cl); k<kn; ++k) {
      b.length = bits.popCount(k)
      var l = 0
      for(var j=0; j<cl; ++j) {
        if(k & (1<<j)) {
          b[l++] = c[j]
        }
      }
      var idx=findCell(from_cells, b)
      if(idx < 0) {
        continue
      }
      while(true) {
        index[idx++].push(i)
        if(idx >= from_cells.length || compareCells(from_cells[idx], b) !== 0) {
          break
        }
      }
    }
  }
  return index
}
exports.incidence = incidence

//Computes the dual of the mesh.  This is basically an optimized version of buildIndex for the situation where from_cells is just the list of vertices
function dual(cells, vertex_count) {
  if(!vertex_count) {
    return incidence(unique(skeleton(cells, 0)), cells, 0)
  }
  var res = new Array(vertex_count)
  for(var i=0; i<vertex_count; ++i) {
    res[i] = []
  }
  for(var i=0, len=cells.length; i<len; ++i) {
    var c = cells[i]
    for(var j=0, cl=c.length; j<cl; ++j) {
      res[c[j]].push(i)
    }
  }
  return res
}
exports.dual = dual

//Enumerates all cells in the complex
function explode(cells) {
  var result = []
  for(var i=0, il=cells.length; i<il; ++i) {
    var c = cells[i]
      , cl = c.length|0
    for(var j=1, jl=(1<<cl); j<jl; ++j) {
      var b = []
      for(var k=0; k<cl; ++k) {
        if((j >>> k) & 1) {
          b.push(c[k])
        }
      }
      result.push(b)
    }
  }
  return normalize(result)
}
exports.explode = explode

//Enumerates all of the n-cells of a cell complex
function skeleton(cells, n) {
  if(n < 0) {
    return []
  }
  var result = []
    , k0     = (1<<(n+1))-1
  for(var i=0; i<cells.length; ++i) {
    var c = cells[i]
    for(var k=k0; k<(1<<c.length); k=bits.nextCombination(k)) {
      var b = new Array(n+1)
        , l = 0
      for(var j=0; j<c.length; ++j) {
        if(k & (1<<j)) {
          b[l++] = c[j]
        }
      }
      result.push(b)
    }
  }
  return normalize(result)
}
exports.skeleton = skeleton;

//Computes the boundary of all cells, does not remove duplicates
function boundary(cells) {
  var res = []
  for(var i=0,il=cells.length; i<il; ++i) {
    var c = cells[i]
    for(var j=0,cl=c.length; j<cl; ++j) {
      var b = new Array(c.length-1)
      for(var k=0, l=0; k<cl; ++k) {
        if(k !== j) {
          b[l++] = c[k]
        }
      }
      res.push(b)
    }
  }
  return normalize(res)
}
exports.boundary = boundary;

//Computes connected components for a dense cell complex
function connectedComponents_dense(cells, vertex_count) {
  var labels = new UnionFind(vertex_count)
  for(var i=0; i<cells.length; ++i) {
    var c = cells[i]
    for(var j=0; j<c.length; ++j) {
      for(var k=j+1; k<c.length; ++k) {
        labels.link(c[j], c[k])
      }
    }
  }
  var components = []
    , component_labels = labels.ranks
  for(var i=0; i<component_labels.length; ++i) {
    component_labels[i] = -1
  }
  for(var i=0; i<cells.length; ++i) {
    var l = labels.find(cells[i][0])
    if(component_labels[l] < 0) {
      component_labels[l] = components.length
      components.push([cells[i].slice(0)])
    } else {
      components[component_labels[l]].push(cells[i].slice(0))
    }
  }
  return components
}

//Computes connected components for a sparse graph
function connectedComponents_sparse(cells) {
  var vertices  = unique(normalize(skeleton(cells, 0)))
    , labels    = new UnionFind(vertices.length)
  for(var i=0; i<cells.length; ++i) {
    var c = cells[i]
    for(var j=0; j<c.length; ++j) {
      var vj = findCell(vertices, [c[j]])
      for(var k=j+1; k<c.length; ++k) {
        labels.link(vj, findCell(vertices, [c[k]]))
      }
    }
  }
  var components        = []
    , component_labels  = labels.ranks
  for(var i=0; i<component_labels.length; ++i) {
    component_labels[i] = -1
  }
  for(var i=0; i<cells.length; ++i) {
    var l = labels.find(findCell(vertices, [cells[i][0]]));
    if(component_labels[l] < 0) {
      component_labels[l] = components.length
      components.push([cells[i].slice(0)])
    } else {
      components[component_labels[l]].push(cells[i].slice(0))
    }
  }
  return components
}

//Computes connected components for a cell complex
function connectedComponents(cells, vertex_count) {
  if(vertex_count) {
    return connectedComponents_dense(cells, vertex_count)
  }
  return connectedComponents_sparse(cells)
}
exports.connectedComponents = connectedComponents

},{"bit-twiddle":33,"union-find":993}],970:[function(require,module,exports){
arguments[4][33][0].apply(exports,arguments)
},{"dup":33}],971:[function(require,module,exports){
arguments[4][969][0].apply(exports,arguments)
},{"bit-twiddle":970,"dup":969,"union-find":972}],972:[function(require,module,exports){
"use strict"; "use restrict";

module.exports = UnionFind;

function UnionFind(count) {
  this.roots = new Array(count);
  this.ranks = new Array(count);
  
  for(var i=0; i<count; ++i) {
    this.roots[i] = i;
    this.ranks[i] = 0;
  }
}

UnionFind.prototype.length = function() {
  return this.roots.length;
}

UnionFind.prototype.makeSet = function() {
  var n = this.roots.length;
  this.roots.push(n);
  this.ranks.push(0);
  return n;
}

UnionFind.prototype.find = function(x) {
  var roots = this.roots;
  while(roots[x] !== x) {
    var y = roots[x];
    roots[x] = roots[y];
    x = y;
  }
  return x;
}

UnionFind.prototype.link = function(x, y) {
  var xr = this.find(x)
    , yr = this.find(y);
  if(xr === yr) {
    return;
  }
  var ranks = this.ranks
    , roots = this.roots
    , xd    = ranks[xr]
    , yd    = ranks[yr];
  if(xd < yd) {
    roots[xr] = yr;
  } else if(yd < xd) {
    roots[yr] = xr;
  } else {
    roots[yr] = xr;
    ++ranks[xr];
  }
}


},{}],973:[function(require,module,exports){
"use strict"

module.exports = simplifyPolygon

var orient = require("robust-orientation")
var sc = require("simplicial-complex")

function errorWeight(base, a, b) {
  var area = Math.abs(orient(base, a, b))
  var perim = Math.sqrt(Math.pow(a[0] - b[0], 2) + Math.pow(a[1]-b[1], 2))
  return area / perim
}

function simplifyPolygon(cells, positions, minArea) {

  var n = positions.length
  var nc = cells.length
  var inv = new Array(n)
  var outv = new Array(n)
  var weights = new Array(n)
  var dead = new Array(n)
  
  //Initialize tables
  for(var i=0; i<n; ++i) {
    inv[i] = outv[i] = -1
    weights[i] = Infinity
    dead[i] = false
  }

  //Compute neighbors
  for(var i=0; i<nc; ++i) {
    var c = cells[i]
    if(c.length !== 2) {
      throw new Error("Input must be a graph")
    }
    var s = c[1]
    var t = c[0]
    if(outv[t] !== -1) {
      outv[t] = -2
    } else {
      outv[t] = s
    }
    if(inv[s] !== -1) {
      inv[s] = -2
    } else {
      inv[s] = t
    }
  }

  //Updates the weight for vertex i
  function computeWeight(i) {
    if(dead[i]) {
      return Infinity
    }
    //TODO: Check that the line segment doesn't cross once simplified
    var s = inv[i]
    var t = outv[i]
    if((s<0) || (t<0)) {
      return Infinity
    } else {
      return errorWeight(positions[i], positions[s], positions[t])
    }
  }

  //Swaps two nodes on the heap (i,j) are the index of the nodes
  function heapSwap(i,j) {
    var a = heap[i]
    var b = heap[j]
    heap[i] = b
    heap[j] = a
    index[a] = j
    index[b] = i
  }

  //Returns the weight of node i on the heap
  function heapWeight(i) {
    return weights[heap[i]]
  }

  function heapParent(i) {
    if(i & 1) {
      return (i - 1) >> 1
    }
    return (i >> 1) - 1
  }

  //Bubble element i down the heap
  function heapDown(i) {
    var w = heapWeight(i)
    while(true) {
      var tw = w
      var left  = 2*i + 1
      var right = 2*(i + 1)
      var next = i
      if(left < heapCount) {
        var lw = heapWeight(left)
        if(lw < tw) {
          next = left
          tw = lw
        }
      }
      if(right < heapCount) {
        var rw = heapWeight(right)
        if(rw < tw) {
          next = right
        }
      }
      if(next === i) {
        return i
      }
      heapSwap(i, next)
      i = next      
    }
  }

  //Bubbles element i up the heap
  function heapUp(i) {
    var w = heapWeight(i)
    while(i > 0) {
      var parent = heapParent(i)
      if(parent >= 0) {
        var pw = heapWeight(parent)
        if(w < pw) {
          heapSwap(i, parent)
          i = parent
          continue
        }
      }
      return i
    }
  }

  //Pop minimum element
  function heapPop() {
    if(heapCount > 0) {
      var head = heap[0]
      heapSwap(0, heapCount-1)
      heapCount -= 1
      heapDown(0)
      return head
    }
    return -1
  }

  //Update heap item i
  function heapUpdate(i, w) {
    var a = heap[i]
    if(weights[a] === w) {
      return i
    }
    weights[a] = -Infinity
    heapUp(i)
    heapPop()
    weights[a] = w
    heapCount += 1
    return heapUp(heapCount-1)
  }

  //Kills a vertex (assume vertex already removed from heap)
  function kill(i) {
    if(dead[i]) {
      return
    }
    //Kill vertex
    dead[i] = true
    //Fixup topology
    var s = inv[i]
    var t = outv[i]
    if(inv[t] >= 0) {
      inv[t] = s
    }
    if(outv[s] >= 0) {
      outv[s] = t
    }

    //Update weights on s and t
    if(index[s] >= 0) {
      heapUpdate(index[s], computeWeight(s))
    }
    if(index[t] >= 0) {
      heapUpdate(index[t], computeWeight(t))
    }
  }

  //Initialize weights and heap
  var heap = []
  var index = new Array(n)
  for(var i=0; i<n; ++i) {
    var w = weights[i] = computeWeight(i)
    if(w < Infinity) {
      index[i] = heap.length
      heap.push(i)
    } else {
      index[i] = -1
    }
  }
  var heapCount = heap.length
  for(var i=heapCount>>1; i>=0; --i) {
    heapDown(i)
  }
  
  //Kill vertices
  while(true) {
    var hmin = heapPop()
    if((hmin < 0) || (weights[hmin] > minArea)) {
      break
    }
    kill(hmin)
  }

  //Build collapsed vertex table
  var npositions = []
  for(var i=0; i<n; ++i) {
    if(!dead[i]) {
      index[i] = npositions.length
      npositions.push(positions[i].slice())
    }
  }
  var nv = npositions.length

  function tortoiseHare(seq, start) {
    if(seq[start] < 0) {
      return start
    }
    var t = start
    var h = start
    do {
      //Walk two steps with h
      var nh = seq[h]
      if(!dead[h] || nh < 0 || nh === h) {
        break
      }
      h = nh
      nh = seq[h]
      if(!dead[h] || nh < 0 || nh === h) {
        break
      }
      h = nh

      //Walk one step with t
      t = seq[t]
    } while(t !== h)
    //Compress cycles
    for(var v=start; v!==h; v = seq[v]) {
      seq[v] = h
    }
    return h
  }

  var ncells = []
  cells.forEach(function(c) {
    var tin = tortoiseHare(inv, c[0])
    var tout = tortoiseHare(outv, c[1])
    if(tin >= 0 && tout >= 0 && tin !== tout) {
      var cin = index[tin]
      var cout = index[tout]
      if(cin !== cout) {
        ncells.push([ cin, cout ])
      }
    }
  })

  //Normalize result
  sc.unique(sc.normalize(ncells))

  //Return final list of cells
  return {
    positions: npositions,
    edges: ncells
  }
}
},{"robust-orientation":954,"simplicial-complex":971}],974:[function(require,module,exports){
"use strict"

module.exports = orderSegments

var orient = require("robust-orientation")

function horizontalOrder(a, b) {
  var bl, br
  if(b[0][0] < b[1][0]) {
    bl = b[0]
    br = b[1]
  } else if(b[0][0] > b[1][0]) {
    bl = b[1]
    br = b[0]
  } else {
    var alo = Math.min(a[0][1], a[1][1])
    var ahi = Math.max(a[0][1], a[1][1])
    var blo = Math.min(b[0][1], b[1][1])
    var bhi = Math.max(b[0][1], b[1][1])
    if(ahi < blo) {
      return ahi - blo
    }
    if(alo > bhi) {
      return alo - bhi
    }
    return ahi - bhi
  }
  var al, ar
  if(a[0][1] < a[1][1]) {
    al = a[0]
    ar = a[1]
  } else {
    al = a[1]
    ar = a[0]
  }
  var d = orient(br, bl, al)
  if(d) {
    return d
  }
  d = orient(br, bl, ar)
  if(d) {
    return d
  }
  return ar - br
}

function orderSegments(b, a) {
  var al, ar
  if(a[0][0] < a[1][0]) {
    al = a[0]
    ar = a[1]
  } else if(a[0][0] > a[1][0]) {
    al = a[1]
    ar = a[0]
  } else {
    return horizontalOrder(a, b)
  }
  var bl, br
  if(b[0][0] < b[1][0]) {
    bl = b[0]
    br = b[1]
  } else if(b[0][0] > b[1][0]) {
    bl = b[1]
    br = b[0]
  } else {
    return -horizontalOrder(b, a)
  }
  var d1 = orient(al, ar, br)
  var d2 = orient(al, ar, bl)
  if(d1 < 0) {
    if(d2 <= 0) {
      return d1
    }
  } else if(d1 > 0) {
    if(d2 >= 0) {
      return d1
    }
  } else if(d2) {
    return d2
  }
  d1 = orient(br, bl, ar)
  d2 = orient(br, bl, al)
  if(d1 < 0) {
    if(d2 <= 0) {
      return d1
    }
  } else if(d1 > 0) {
    if(d2 >= 0) {
      return d1
    }
  } else if(d2) {
    return d2
  }
  return ar[0] - br[0]
}
},{"robust-orientation":954}],975:[function(require,module,exports){
"use strict"

module.exports = createSlabDecomposition

var bounds = require("binary-search-bounds")
var createRBTree = require("functional-red-black-tree")
var orient = require("robust-orientation")
var orderSegments = require("./lib/order-segments")

function SlabDecomposition(slabs, coordinates, horizontal) {
  this.slabs = slabs
  this.coordinates = coordinates
  this.horizontal = horizontal
}

var proto = SlabDecomposition.prototype

function compareHorizontal(e, y) {
  return e.y - y
}

function searchBucket(root, p) {
  var lastNode = null
  while(root) {
    var seg = root.key
    var l, r
    if(seg[0][0] < seg[1][0]) {
      l = seg[0]
      r = seg[1]
    } else {
      l = seg[1]
      r = seg[0]
    }
    var o = orient(l, r, p)
    if(o < 0) {
      root = root.left
    } else if(o > 0) {
      if(p[0] !== seg[1][0]) {
        lastNode = root
        root = root.right
      } else {
        var val = searchBucket(root.right, p)
        if(val) {
          return val
        }
        root = root.left
      }
    } else {
      if(p[0] !== seg[1][0]) {
        return root
      } else {
        var val = searchBucket(root.right, p)
        if(val) {
          return val
        }
        root = root.left
      }
    }
  }
  return lastNode
}

proto.castUp = function(p) {
  var bucket = bounds.le(this.coordinates, p[0])
  if(bucket < 0) {
    return -1
  }
  var root = this.slabs[bucket]
  var hitNode = searchBucket(this.slabs[bucket], p)
  var lastHit = -1
  if(hitNode) {
    lastHit = hitNode.value
  }
  //Edge case: need to handle horizontal segments (sucks)
  if(this.coordinates[bucket] === p[0]) {
    var lastSegment = null
    if(hitNode) {
      lastSegment = hitNode.key
    }
    if(bucket > 0) {
      var otherHitNode = searchBucket(this.slabs[bucket-1], p)
      if(otherHitNode) {
        if(lastSegment) {
          if(orderSegments(otherHitNode.key, lastSegment) > 0) {
            lastSegment = otherHitNode.key
            lastHit = otherHitNode.value
          }
        } else {
          lastHit = otherHitNode.value
          lastSegment = otherHitNode.key
        }
      }
    }
    var horiz = this.horizontal[bucket]
    if(horiz.length > 0) {
      var hbucket = bounds.ge(horiz, p[1], compareHorizontal)
      if(hbucket < horiz.length) {
        var e = horiz[hbucket]
        if(p[1] === e.y) {
          if(e.closed) {
            return e.index
          } else {
            while(hbucket < horiz.length-1 && horiz[hbucket+1].y === p[1]) {
              hbucket = hbucket+1
              e = horiz[hbucket]
              if(e.closed) {
                return e.index
              }
            }
            if(e.y === p[1] && !e.start) {
              hbucket = hbucket+1
              if(hbucket >= horiz.length) {
                return lastHit
              }
              e = horiz[hbucket]
            }
          }
        }
        //Check if e is above/below last segment
        if(e.start) {
          if(lastSegment) {
            var o = orient(lastSegment[0], lastSegment[1], [p[0], e.y])
            if(lastSegment[0][0] > lastSegment[1][0]) {
              o = -o
            }
            if(o > 0) {
              lastHit = e.index
            }
          } else {
            lastHit = e.index
          }
        } else if(e.y !== p[1]) {
          lastHit = e.index
        }
      }
    }
  }
  return lastHit
}

function IntervalSegment(y, index, start, closed) {
  this.y = y
  this.index = index
  this.start = start
  this.closed = closed
}

function Event(x, segment, create, index) {
  this.x = x
  this.segment = segment
  this.create = create
  this.index = index
}


function createSlabDecomposition(segments) {
  var numSegments = segments.length
  var numEvents = 2 * numSegments
  var events = new Array(numEvents)
  for(var i=0; i<numSegments; ++i) {
    var s = segments[i]
    var f = s[0][0] < s[1][0]
    events[2*i] = new Event(s[0][0], s, f, i)
    events[2*i+1] = new Event(s[1][0], s, !f, i)
  }
  events.sort(function(a,b) {
    var d = a.x - b.x
    if(d) {
      return d
    }
    d = a.create - b.create
    if(d) {
      return d
    }
    return Math.min(a.segment[0][1], a.segment[1][1]) - Math.min(b.segment[0][1], b.segment[1][1])
  })
  var tree = createRBTree(orderSegments)
  var slabs = []
  var lines = []
  var horizontal = []
  var lastX = -Infinity
  for(var i=0; i<numEvents; ) {
    var x = events[i].x
    var horiz = []
    while(i < numEvents) {
      var e = events[i]
      if(e.x !== x) {
        break
      }
      i += 1
      if(e.segment[0][0] === e.x && e.segment[1][0] === e.x) {
        if(e.create) {
          if(e.segment[0][1] < e.segment[1][1]) {
            horiz.push(new IntervalSegment(
                e.segment[0][1],
                e.index,
                true,
                true))
            horiz.push(new IntervalSegment(
                e.segment[1][1],
                e.index,
                false,
                false))
          } else {
            horiz.push(new IntervalSegment(
                e.segment[1][1],
                e.index,
                true,
                false))
            horiz.push(new IntervalSegment(
                e.segment[0][1],
                e.index,
                false,
                true))
          }
        }
      } else {
        if(e.create) {
          tree = tree.insert(e.segment, e.index)
        } else {
          tree = tree.remove(e.segment)
        }
      }
    }
    slabs.push(tree.root)
    lines.push(x)
    horizontal.push(horiz)
  }
  return new SlabDecomposition(slabs, lines, horizontal)
}
},{"./lib/order-segments":974,"binary-search-bounds":32,"functional-red-black-tree":100,"robust-orientation":954}],976:[function(require,module,exports){
"use strict"

var robustDot = require("robust-dot-product")
var robustSum = require("robust-sum")

module.exports = splitPolygon
module.exports.positive = positive
module.exports.negative = negative

function planeT(p, plane) {
  var r = robustSum(robustDot(p, plane), [plane[plane.length-1]])
  return r[r.length-1]
}


//Can't do this exactly and emit a floating point result
function lerpW(a, wa, b, wb) {
  var d = wb - wa
  var t = -wa / d
  if(t < 0.0) {
    t = 0.0
  } else if(t > 1.0) {
    t = 1.0
  }
  var ti = 1.0 - t
  var n = a.length
  var r = new Array(n)
  for(var i=0; i<n; ++i) {
    r[i] = t * a[i] + ti * b[i]
  }
  return r
}

function splitPolygon(points, plane) {
  var pos = []
  var neg = []
  var a = planeT(points[points.length-1], plane)
  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
    t = points[i]
    var b = planeT(t, plane)
    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
      var p = lerpW(s, b, t, a)
      pos.push(p)
      neg.push(p.slice())
    }
    if(b < 0) {
      neg.push(t.slice())
    } else if(b > 0) {
      pos.push(t.slice())
    } else {
      pos.push(t.slice())
      neg.push(t.slice())
    }
    a = b
  }
  return { positive: pos, negative: neg }
}

function positive(points, plane) {
  var pos = []
  var a = planeT(points[points.length-1], plane)
  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
    t = points[i]
    var b = planeT(t, plane)
    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
      pos.push(lerpW(s, b, t, a))
    }
    if(b >= 0) {
      pos.push(t.slice())
    }
    a = b
  }
  return pos
}

function negative(points, plane) {
  var neg = []
  var a = planeT(points[points.length-1], plane)
  for(var s=points[points.length-1], t=points[0], i=0; i<points.length; ++i, s=t) {
    t = points[i]
    var b = planeT(t, plane)
    if((a < 0 && b > 0) || (a > 0 && b < 0)) {
      neg.push(lerpW(s, b, t, a))
    }
    if(b <= 0) {
      neg.push(t.slice())
    }
    a = b
  }
  return neg
}
},{"robust-dot-product":951,"robust-sum":959}],977:[function(require,module,exports){
(function(window) {
    var re = {
        not_string: /[^s]/,
        number: /[diefg]/,
        json: /[j]/,
        not_json: /[^j]/,
        text: /^[^\x25]+/,
        modulo: /^\x25{2}/,
        placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
        key: /^([a-z_][a-z_\d]*)/i,
        key_access: /^\.([a-z_][a-z_\d]*)/i,
        index_access: /^\[(\d+)\]/,
        sign: /^[\+\-]/
    }

    function sprintf() {
        var key = arguments[0], cache = sprintf.cache
        if (!(cache[key] && cache.hasOwnProperty(key))) {
            cache[key] = sprintf.parse(key)
        }
        return sprintf.format.call(null, cache[key], arguments)
    }

    sprintf.format = function(parse_tree, argv) {
        var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
        for (i = 0; i < tree_length; i++) {
            node_type = get_type(parse_tree[i])
            if (node_type === "string") {
                output[output.length] = parse_tree[i]
            }
            else if (node_type === "array") {
                match = parse_tree[i] // convenience purposes only
                if (match[2]) { // keyword argument
                    arg = argv[cursor]
                    for (k = 0; k < match[2].length; k++) {
                        if (!arg.hasOwnProperty(match[2][k])) {
                            throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
                        }
                        arg = arg[match[2][k]]
                    }
                }
                else if (match[1]) { // positional argument (explicit)
                    arg = argv[match[1]]
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                else { // positional argument (implicit)
                    arg = argv[cursor++]
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                if (get_type(arg) == "function") {
                    arg = arg()
                }

                if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
                    throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
                }

                if (re.number.test(match[8])) {
                    is_positive = arg >= 0
                }

                switch (match[8]) {
                    case "b":
                        arg = arg.toString(2)
                    break
                    case "c":
                        arg = String.fromCharCode(arg)
                    break
                    case "d":
                    case "i":
                        arg = parseInt(arg, 10)
                    break
                    case "j":
                        arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
                    break
                    case "e":
                        arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
                    break
                    case "f":
                        arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
                    break
                    case "g":
                        arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
                    break
                    case "o":
                        arg = arg.toString(8)
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                    case "s":
                        arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
                    break
                    case "u":
                        arg = arg >>> 0
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                        arg = arg.toString(16)
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                    break
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                if (re.json.test(match[8])) {
                    output[output.length] = arg
                }
                else {
                    if (re.number.test(match[8]) && (!is_positive || match[3])) {
                        sign = is_positive ? "+" : "-"
                        arg = arg.toString().replace(re.sign, "")
                    }
                    else {
                        sign = ""
                    }
                    pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
                    pad_length = match[6] - (sign + arg).length
                    pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
                    output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
                }
            }
        }
        return output.join("")
    }

    sprintf.cache = {}

    sprintf.parse = function(fmt) {
        var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
        while (_fmt) {
            if ((match = re.text.exec(_fmt)) !== null) {
                parse_tree[parse_tree.length] = match[0]
            }
            else if ((match = re.modulo.exec(_fmt)) !== null) {
                parse_tree[parse_tree.length] = "%"
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            else if ((match = re.placeholder.exec(_fmt)) !== null) {
                if (match[2]) {
                    arg_names |= 1
                    var field_list = [], replacement_field = match[2], field_match = []
                    if ((field_match = re.key.exec(replacement_field)) !== null) {
                        field_list[field_list.length] = field_match[1]
                        while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
                            if ((field_match = re.key_access.exec(replacement_field)) !== null) {
                                field_list[field_list.length] = field_match[1]
                            }
                            else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
                                field_list[field_list.length] = field_match[1]
                            }
                            else {
                                throw new SyntaxError("[sprintf] failed to parse named argument key")
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                        throw new SyntaxError("[sprintf] failed to parse named argument key")
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                }
                else {
                    arg_names |= 2
                }
                if (arg_names === 3) {
                    throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
                }
                parse_tree[parse_tree.length] = match
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            else {
                throw new SyntaxError("[sprintf] unexpected placeholder")
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            _fmt = _fmt.substring(match[0].length)
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        return parse_tree
    }

    var vsprintf = function(fmt, argv, _argv) {
        _argv = (argv || []).slice(0)
        _argv.splice(0, 0, fmt)
        return sprintf.apply(null, _argv)
    }

    /**
     * helpers
     */
    function get_type(variable) {
        return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
    }

    function str_repeat(input, multiplier) {
        return Array(multiplier + 1).join(input)
    }

    /**
     * export to either browser or node.js
     */
    if (typeof exports !== "undefined") {
        exports.sprintf = sprintf
        exports.vsprintf = vsprintf
    }
    else {
        window.sprintf = sprintf
        window.vsprintf = vsprintf

        if (typeof define === "function" && define.amd) {
            define(function() {
                return {
                    sprintf: sprintf,
                    vsprintf: vsprintf
                }
            })
        }
    }
})(typeof window === "undefined" ? this : window);

},{}],978:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":95,"inherits":266,"readable-stream/duplex.js":934,"readable-stream/passthrough.js":941,"readable-stream/readable.js":942,"readable-stream/transform.js":943,"readable-stream/writable.js":944}],979:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Buffer = require('buffer').Buffer;

var isBufferEncoding = Buffer.isEncoding
  || function(encoding) {
       switch (encoding && encoding.toLowerCase()) {
         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
         default: return false;
       }
     }


function assertEncoding(encoding) {
  if (encoding && !isBufferEncoding(encoding)) {
    throw new Error('Unknown encoding: ' + encoding);
  }
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
var StringDecoder = exports.StringDecoder = function(encoding) {
  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
  assertEncoding(encoding);
  switch (this.encoding) {
    case 'utf8':
      // CESU-8 represents each of Surrogate Pair by 3-bytes
      this.surrogateSize = 3;
      break;
    case 'ucs2':
    case 'utf16le':
      // UTF-16 represents each of Surrogate Pair by 2-bytes
      this.surrogateSize = 2;
      this.detectIncompleteChar = utf16DetectIncompleteChar;
      break;
    case 'base64':
      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
      this.surrogateSize = 3;
      this.detectIncompleteChar = base64DetectIncompleteChar;
      break;
    default:
      this.write = passThroughWrite;
      return;
  }

  // Enough space to store all bytes of a single character. UTF-8 needs 4
  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
  this.charBuffer = new Buffer(6);
  // Number of bytes received for the current incomplete multi-byte character.
  this.charReceived = 0;
  // Number of bytes expected for the current incomplete multi-byte character.
  this.charLength = 0;
};


// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder.prototype.write = function(buffer) {
  var charStr = '';
  // if our last write ended with an incomplete multibyte character
  while (this.charLength) {
    // determine how many remaining bytes this buffer has to offer for this char
    var available = (buffer.length >= this.charLength - this.charReceived) ?
        this.charLength - this.charReceived :
        buffer.length;

    // add the new bytes to the char buffer
    buffer.copy(this.charBuffer, this.charReceived, 0, available);
    this.charReceived += available;

    if (this.charReceived < this.charLength) {
      // still not enough chars in this buffer? wait for more ...
      return '';
    }

    // remove bytes belonging to the current character from the buffer
    buffer = buffer.slice(available, buffer.length);

    // get the character that was split
    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    var charCode = charStr.charCodeAt(charStr.length - 1);
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      this.charLength += this.surrogateSize;
      charStr = '';
      continue;
    }
    this.charReceived = this.charLength = 0;

    // if there are no more bytes in this buffer, just emit our char
    if (buffer.length === 0) {
      return charStr;
    }
    break;
  }

  // determine and set charLength / charReceived
  this.detectIncompleteChar(buffer);

  var end = buffer.length;
  if (this.charLength) {
    // buffer the incomplete character bytes we got
    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
    end -= this.charReceived;
  }

  charStr += buffer.toString(this.encoding, 0, end);

  var end = charStr.length - 1;
  var charCode = charStr.charCodeAt(end);
  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
    var size = this.surrogateSize;
    this.charLength += size;
    this.charReceived += size;
    this.charBuffer.copy(this.charBuffer, size, 0, size);
    buffer.copy(this.charBuffer, 0, 0, size);
    return charStr.substring(0, end);
  }

  // or just emit the charStr
  return charStr;
};

// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
  // determine how many bytes we have to check at the end of this buffer
  var i = (buffer.length >= 3) ? 3 : buffer.length;

  // Figure out if one of the last i bytes of our buffer announces an
  // incomplete char.
  for (; i > 0; i--) {
    var c = buffer[buffer.length - i];

    // See http://en.wikipedia.org/wiki/UTF-8#Description

    // 110XXXXX
    if (i == 1 && c >> 5 == 0x06) {
      this.charLength = 2;
      break;
    }

    // 1110XXXX
    if (i <= 2 && c >> 4 == 0x0E) {
      this.charLength = 3;
      break;
    }

    // 11110XXX
    if (i <= 3 && c >> 3 == 0x1E) {
      this.charLength = 4;
      break;
    }
  }
  this.charReceived = i;
};

StringDecoder.prototype.end = function(buffer) {
  var res = '';
  if (buffer && buffer.length)
    res = this.write(buffer);

  if (this.charReceived) {
    var cr = this.charReceived;
    var buf = this.charBuffer;
    var enc = this.encoding;
    res += buf.slice(0, cr).toString(enc);
  }

  return res;
};

function passThroughWrite(buffer) {
  return buffer.toString(this.encoding);
}

function utf16DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 2;
  this.charLength = this.charReceived ? 2 : 0;
}

function base64DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 3;
  this.charLength = this.charReceived ? 3 : 0;
}

},{"buffer":46}],980:[function(require,module,exports){
'use strict';

var kdbush = require('kdbush');

module.exports = supercluster;

function supercluster(options) {
    return new SuperCluster(options);
}

function SuperCluster(options) {
    this.options = extend(Object.create(this.options), options);
    this.trees = new Array(this.options.maxZoom + 1);
}

SuperCluster.prototype = {
    options: {
        minZoom: 0,   // min zoom to generate clusters on
        maxZoom: 16,  // max zoom level to cluster the points on
        radius: 40,   // cluster radius in pixels
        extent: 512,  // tile extent (radius is calculated relative to it)
        nodeSize: 64, // size of the KD-tree leaf node, affects performance
        log: false,   // whether to log timing info

        // a reduce function for calculating custom cluster properties
        reduce: null, // function (accumulated, props) { accumulated.sum += props.sum; }

        // initial properties of a cluster (before running the reducer)
        initial: function () { return {}; }, // function () { return {sum: 0}; },

        // properties to use for individual points when running the reducer
        map: function (props) { return props; } // function (props) { return {sum: props.my_value}; },
    },

    load: function (points) {
        var log = this.options.log;

        if (log) console.time('total time');

        var timerId = 'prepare ' + points.length + ' points';
        if (log) console.time(timerId);

        this.points = points;

        // generate a cluster object for each point
        var clusters = points.map(createPointCluster);
        if (log) console.timeEnd(timerId);

        // cluster points on max zoom, then cluster the results on previous zoom, etc.;
        // results in a cluster hierarchy across zoom levels
        for (var z = this.options.maxZoom; z >= this.options.minZoom; z--) {
            var now = +Date.now();

            // index input points into a KD-tree
            this.trees[z + 1] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);

            clusters = this._cluster(clusters, z); // create a new set of clusters for the zoom

            if (log) console.log('z%d: %d clusters in %dms', z, clusters.length, +Date.now() - now);
        }

        // index top-level clusters
        this.trees[this.options.minZoom] = kdbush(clusters, getX, getY, this.options.nodeSize, Float32Array);

        if (log) console.timeEnd('total time');

        return this;
    },

    getClusters: function (bbox, zoom) {
        var tree = this.trees[this._limitZoom(zoom)];
        var ids = tree.range(lngX(bbox[0]), latY(bbox[3]), lngX(bbox[2]), latY(bbox[1]));
        var clusters = [];
        for (var i = 0; i < ids.length; i++) {
            var c = tree.points[ids[i]];
            clusters.push(c.numPoints ? getClusterJSON(c) : this.points[c.id]);
        }
        return clusters;
    },

    getChildren: function (clusterId, clusterZoom) {
        var origin = this.trees[clusterZoom + 1].points[clusterId];
        var r = this.options.radius / (this.options.extent * Math.pow(2, clusterZoom));
        var points = this.trees[clusterZoom + 1].within(origin.x, origin.y, r);
        var children = [];
        for (var i = 0; i < points.length; i++) {
            var c = this.trees[clusterZoom + 1].points[points[i]];
            if (c.parentId === clusterId) {
                children.push(c.numPoints ? getClusterJSON(c) : this.points[c.id]);
            }
        }
        return children;
    },

    getLeaves: function (clusterId, clusterZoom, limit, offset) {
        limit = limit || 10;
        offset = offset || 0;

        var leaves = [];
        this._appendLeaves(leaves, clusterId, clusterZoom, limit, offset, 0);

        return leaves;
    },

    getTile: function (z, x, y) {
        var tree = this.trees[this._limitZoom(z)];
        var z2 = Math.pow(2, z);
        var extent = this.options.extent;
        var r = this.options.radius;
        var p = r / extent;
        var top = (y - p) / z2;
        var bottom = (y + 1 + p) / z2;

        var tile = {
            features: []
        };

        this._addTileFeatures(
            tree.range((x - p) / z2, top, (x + 1 + p) / z2, bottom),
            tree.points, x, y, z2, tile);

        if (x === 0) {
            this._addTileFeatures(
                tree.range(1 - p / z2, top, 1, bottom),
                tree.points, z2, y, z2, tile);
        }
        if (x === z2 - 1) {
            this._addTileFeatures(
                tree.range(0, top, p / z2, bottom),
                tree.points, -1, y, z2, tile);
        }

        return tile.features.length ? tile : null;
    },

    getClusterExpansionZoom: function (clusterId, clusterZoom) {
        while (clusterZoom < this.options.maxZoom) {
            var children = this.getChildren(clusterId, clusterZoom);
            clusterZoom++;
            if (children.length !== 1) break;
            clusterId = children[0].properties.cluster_id;
        }
        return clusterZoom;
    },

    _appendLeaves: function (result, clusterId, clusterZoom, limit, offset, skipped) {
        var children = this.getChildren(clusterId, clusterZoom);

        for (var i = 0; i < children.length; i++) {
            var props = children[i].properties;

            if (props.cluster) {
                if (skipped + props.point_count <= offset) {
                    // skip the whole cluster
                    skipped += props.point_count;
                } else {
                    // enter the cluster
                    skipped = this._appendLeaves(
                        result, props.cluster_id, clusterZoom + 1, limit, offset, skipped);
                    // exit the cluster
                }
            } else if (skipped < offset) {
                // skip a single point
                skipped++;
            } else {
                // add a single point
                result.push(children[i]);
            }
            if (result.length === limit) break;
        }

        return skipped;
    },

    _addTileFeatures: function (ids, points, x, y, z2, tile) {
        for (var i = 0; i < ids.length; i++) {
            var c = points[ids[i]];
            tile.features.push({
                type: 1,
                geometry: [[
                    Math.round(this.options.extent * (c.x * z2 - x)),
                    Math.round(this.options.extent * (c.y * z2 - y))
                ]],
                tags: c.numPoints ? getClusterProperties(c) : this.points[c.id].properties
            });
        }
    },

    _limitZoom: function (z) {
        return Math.max(this.options.minZoom, Math.min(z, this.options.maxZoom + 1));
    },

    _cluster: function (points, zoom) {
        var clusters = [];
        var r = this.options.radius / (this.options.extent * Math.pow(2, zoom));

        // loop through each point
        for (var i = 0; i < points.length; i++) {
            var p = points[i];
            // if we've already visited the point at this zoom level, skip it
            if (p.zoom <= zoom) continue;
            p.zoom = zoom;

            // find all nearby points
            var tree = this.trees[zoom + 1];
            var neighborIds = tree.within(p.x, p.y, r);

            var numPoints = p.numPoints || 1;
            var wx = p.x * numPoints;
            var wy = p.y * numPoints;

            var clusterProperties = null;

            if (this.options.reduce) {
                clusterProperties = this.options.initial();
                this._accumulate(clusterProperties, p);
            }

            for (var j = 0; j < neighborIds.length; j++) {
                var b = tree.points[neighborIds[j]];
                // filter out neighbors that are too far or already processed
                if (zoom < b.zoom) {
                    var numPoints2 = b.numPoints || 1;
                    b.zoom = zoom; // save the zoom (so it doesn't get processed twice)
                    wx += b.x * numPoints2; // accumulate coordinates for calculating weighted center
                    wy += b.y * numPoints2;
                    numPoints += numPoints2;
                    b.parentId = i;

                    if (this.options.reduce) {
                        this._accumulate(clusterProperties, b);
                    }
                }
            }

            if (numPoints === 1) {
                clusters.push(p);
            } else {
                p.parentId = i;
                clusters.push(createCluster(wx / numPoints, wy / numPoints, numPoints, i, clusterProperties));
            }
        }

        return clusters;
    },

    _accumulate: function (clusterProperties, point) {
        var properties = point.numPoints ?
            point.properties :
            this.options.map(this.points[point.id].properties);

        this.options.reduce(clusterProperties, properties);
    }
};

function createCluster(x, y, numPoints, id, properties) {
    return {
        x: x, // weighted cluster center
        y: y,
        zoom: Infinity, // the last zoom the cluster was processed at
        id: id, // index of the first child of the cluster in the zoom level tree
        properties: properties,
        parentId: -1, // parent cluster id
        numPoints: numPoints
    };
}

function createPointCluster(p, id) {
    var coords = p.geometry.coordinates;
    return {
        x: lngX(coords[0]), // projected point coordinates
        y: latY(coords[1]),
        zoom: Infinity, // the last zoom the point was processed at
        id: id, // index of the source feature in the original input array
        parentId: -1 // parent cluster id
    };
}

function getClusterJSON(cluster) {
    return {
        type: 'Feature',
        properties: getClusterProperties(cluster),
        geometry: {
            type: 'Point',
            coordinates: [xLng(cluster.x), yLat(cluster.y)]
        }
    };
}

function getClusterProperties(cluster) {
    var count = cluster.numPoints;
    var abbrev = count >= 10000 ? Math.round(count / 1000) + 'k' :
                 count >= 1000 ? (Math.round(count / 100) / 10) + 'k' : count;
    return extend(extend({}, cluster.properties), {
        cluster: true,
        cluster_id: cluster.id,
        point_count: count,
        point_count_abbreviated: abbrev
    });
}

// longitude/latitude to spherical mercator in [0..1] range
function lngX(lng) {
    return lng / 360 + 0.5;
}
function latY(lat) {
    var sin = Math.sin(lat * Math.PI / 180),
        y = (0.5 - 0.25 * Math.log((1 + sin) / (1 - sin)) / Math.PI);
    return y < 0 ? 0 :
           y > 1 ? 1 : y;
}

// spherical mercator to longitude/latitude
function xLng(x) {
    return (x - 0.5) * 360;
}
function yLat(y) {
    var y2 = (180 - y * 360) * Math.PI / 180;
    return 360 * Math.atan(Math.exp(y2)) / Math.PI - 90;
}

function extend(dest, src) {
    for (var id in src) dest[id] = src[id];
    return dest;
}

function getX(p) {
    return p.x;
}
function getY(p) {
    return p.y;
}

},{"kdbush":274}],981:[function(require,module,exports){
'use strict'

module.exports = toSuperScript

var SUPERSCRIPTS = {
  ' ': ' ',
  '0': '⁰',
  '1': '¹',
  '2': '²',
  '3': '³',
  '4': '⁴',
  '5': '⁵',
  '6': '⁶',
  '7': '⁷',
  '8': '⁸',
  '9': '⁹',
  '+': '⁺',
  '-': '⁻',
  'a': 'ᵃ',
  'b': 'ᵇ',
  'c': 'ᶜ',
  'd': 'ᵈ',
  'e': 'ᵉ',
  'f': 'ᶠ',
  'g': 'ᵍ',
  'h': 'ʰ',
  'i': 'ⁱ',
  'j': 'ʲ',
  'k': 'ᵏ',
  'l': 'ˡ',
  'm': 'ᵐ',
  'n': 'ⁿ',
  'o': 'ᵒ',
  'p': 'ᵖ',
  'r': 'ʳ',
  's': 'ˢ',
  't': 'ᵗ',
  'u': 'ᵘ',
  'v': 'ᵛ',
  'w': 'ʷ',
  'x': 'ˣ',
  'y': 'ʸ',
  'z': 'ᶻ'
}

function toSuperScript(x) {
  return x.split('').map(function(c) {
    if(c in SUPERSCRIPTS) {
      return SUPERSCRIPTS[c]
    }
    return ''
  }).join('')
}

},{}],982:[function(require,module,exports){
"use strict"

module.exports = surfaceNets

var generateContourExtractor = require("ndarray-extract-contour")
var triangulateCube = require("triangulate-hypercube")
var zeroCrossings = require("zero-crossings")

function buildSurfaceNets(order, dtype) {
  var dimension = order.length
  var code = ["'use strict';"]
  var funcName = "surfaceNets" + order.join("_") + "d" + dtype

  //Contour extraction function
  code.push(
    "var contour=genContour({",
      "order:[", order.join(), "],",
      "scalarArguments: 3,",
      "phase:function phaseFunc(p,a,b,c) { return (p > c)|0 },")
  if(dtype === "generic") {
    code.push("getters:[0],")
  }

  //Generate vertex function
  var cubeArgs = []
  var extraArgs = []
  for(var i=0; i<dimension; ++i) {
    cubeArgs.push("d" + i)
    extraArgs.push("d" + i)
  }
  for(var i=0; i<(1<<dimension); ++i) {
    cubeArgs.push("v" + i)
    extraArgs.push("v" + i)
  }
  for(var i=0; i<(1<<dimension); ++i) {
    cubeArgs.push("p" + i)
    extraArgs.push("p" + i)
  }
  cubeArgs.push("a", "b", "c")
  extraArgs.push("a", "c")
  code.push("vertex:function vertexFunc(", cubeArgs.join(), "){")
  //Mask args together
  var maskStr = []
  for(var i=0; i<(1<<dimension); ++i) {
    maskStr.push("(p" + i + "<<" + i + ")")
  }
  //Generate variables and giganto switch statement
  code.push("var m=(", maskStr.join("+"), ")|0;if(m===0||m===", (1<<(1<<dimension))-1, "){return}")
  var extraFuncs = []
  var currentFunc = []
  if(1<<(1<<dimension) <= 128) {
    code.push("switch(m){")
    currentFunc = code
  } else {
    code.push("switch(m>>>7){")
  }
  for(var i=0; i<1<<(1<<dimension); ++i) {
    if(1<<(1<<dimension) > 128) {
      if((i%128)===0) {
        if(extraFuncs.length > 0) {
          currentFunc.push("}}")
        }
        var efName = "vExtra" + extraFuncs.length
        code.push("case ", (i>>>7), ":", efName, "(m&0x7f,", extraArgs.join(), ");break;")
        currentFunc = [
          "function ", efName, "(m,", extraArgs.join(), "){switch(m){"
        ]
        extraFuncs.push(currentFunc)
      }  
    }
    currentFunc.push("case ", (i&0x7f), ":")
    var crossings = new Array(dimension)
    var denoms = new Array(dimension)
    var crossingCount = new Array(dimension)
    var bias = new Array(dimension)
    var totalCrossings = 0
    for(var j=0; j<dimension; ++j) {
      crossings[j] = []
      denoms[j] = []
      crossingCount[j] = 0
      bias[j] = 0
    }
    for(var j=0; j<(1<<dimension); ++j) {
      for(var k=0; k<dimension; ++k) {
        var u = j ^ (1<<k)
        if(u > j) {
          continue
        }
        if(!(i&(1<<u)) !== !(i&(1<<j))) {
          var sign = 1
          if(i&(1<<u)) {
            denoms[k].push("v" + u + "-v" + j)
          } else {
            denoms[k].push("v" + j + "-v" + u)
            sign = -sign
          }
          if(sign < 0) {
            crossings[k].push("-v" + j + "-v" + u)
            crossingCount[k] += 2
          } else {
            crossings[k].push("v" + j + "+v" + u)
            crossingCount[k] -= 2            
          }
          totalCrossings += 1
          for(var l=0; l<dimension; ++l) {
            if(l === k) {
              continue
            }
            if(u&(1<<l)) {
              bias[l] += 1
            } else {
              bias[l] -= 1
            }
          }
        }
      }
    }
    var vertexStr = []
    for(var k=0; k<dimension; ++k) {
      if(crossings[k].length === 0) {
        vertexStr.push("d" + k + "-0.5")
      } else {
        var cStr = ""
        if(crossingCount[k] < 0) {
          cStr = crossingCount[k] + "*c"
        } else if(crossingCount[k] > 0) {
          cStr = "+" + crossingCount[k] + "*c"
        }
        var weight = 0.5 * (crossings[k].length / totalCrossings)
        var shift = 0.5 + 0.5 * (bias[k] / totalCrossings)
        vertexStr.push("d" + k + "-" + shift + "-" + weight + "*(" + crossings[k].join("+") + cStr + ")/(" + denoms[k].join("+") + ")")
        
      }
    }
    currentFunc.push("a.push([", vertexStr.join(), "]);",
      "break;")
  }
  code.push("}},")
  if(extraFuncs.length > 0) {
    currentFunc.push("}}")
  }

  //Create face function
  var faceArgs = []
  for(var i=0; i<(1<<(dimension-1)); ++i) {
    faceArgs.push("v" + i)
  }
  faceArgs.push("c0", "c1", "p0", "p1", "a", "b", "c")
  code.push("cell:function cellFunc(", faceArgs.join(), "){")

  var facets = triangulateCube(dimension-1)
  code.push("if(p0){b.push(",
    facets.map(function(f) {
      return "[" + f.map(function(v) {
        return "v" + v
      }) + "]"
    }).join(), ")}else{b.push(",
    facets.map(function(f) {
      var e = f.slice()
      e.reverse()
      return "[" + e.map(function(v) {
        return "v" + v
      }) + "]"
    }).join(),
    ")}}});function ", funcName, "(array,level){var verts=[],cells=[];contour(array,verts,cells,level);return {positions:verts,cells:cells};} return ", funcName, ";")

  for(var i=0; i<extraFuncs.length; ++i) {
    code.push(extraFuncs[i].join(""))
  }

  //Compile and link
  var proc = new Function("genContour", code.join(""))
  return proc(generateContourExtractor)
}

//1D case: Need to handle specially
function mesh1D(array, level) {
  var zc = zeroCrossings(array, level)
  var n = zc.length
  var npos = new Array(n)
  var ncel = new Array(n)
  for(var i=0; i<n; ++i) {
    npos[i] = [ zc[i] ]
    ncel[i] = [ i ]
  }
  return {
    positions: npos,
    cells: ncel
  }
}

var CACHE = {}

function surfaceNets(array,level) {
  if(array.dimension <= 0) {
    return { positions: [], cells: [] }
  } else if(array.dimension === 1) {
    return mesh1D(array, level)
  }
  var typesig = array.order.join() + "-" + array.dtype
  var proc = CACHE[typesig]
  var level = (+level) || 0.0
  if(!proc) {
    proc = CACHE[typesig] = buildSurfaceNets(array.order, array.dtype)
  }
  return proc(array,level)
}
},{"ndarray-extract-contour":432,"triangulate-hypercube":988,"zero-crossings":1036}],983:[function(require,module,exports){
(function (process){
'use strict'

module.exports = textGet

var vectorizeText = require('vectorize-text')

var globals = window || process.global || {}
var __TEXT_CACHE  = globals.__TEXT_CACHE || {}
globals.__TEXT_CACHE = {}

function unwrap(mesh) {
  var cells     = mesh.cells
  var positions = mesh.positions
  var data      = new Float32Array(cells.length * 6)
  var ptr       = 0
  var shapeX    = 0
  for(var i=0; i<cells.length; ++i) {
    var tri = cells[i]
    for(var j=0; j<3; ++j) {
      var point = positions[tri[j]]
      data[ptr++] = point[0]
      data[ptr++] = point[1] + 1.4
      shapeX      = Math.max(point[0], shapeX)
    }
  }
  return {
    data:  data,
    shape: shapeX
  }
}

function textGet(font, text, opts) {
  var opts = opts || {}
  var fontcache = __TEXT_CACHE[font]
   if(!fontcache) {
     fontcache = __TEXT_CACHE[font] = {
       ' ': {
         data:   new Float32Array(0),
         shape: 0.2
       }
     }
   }
   var mesh = fontcache[text]
   if(!mesh) {
     if(text.length <= 1 || !/\d/.test(text)) {
       mesh = fontcache[text] = unwrap(vectorizeText(text, {
         triangles:     true,
         font:          font,
         textAlign:     opts.textAlign || 'left',
         textBaseline:  'alphabetic'
       }))
     } else {
       var parts = text.split(/(\d|\s)/)
       var buffer = new Array(parts.length)
       var bufferSize = 0
       var shapeX = 0
       for(var i=0; i<parts.length; ++i) {
         buffer[i] = textGet(font, parts[i])
         bufferSize += buffer[i].data.length
         shapeX += buffer[i].shape
         if(i>0) {
           shapeX += 0.02
         }
       }

       var data = new Float32Array(bufferSize)
       var ptr     = 0
       var xOffset = -0.5 * shapeX
       for(var i=0; i<buffer.length; ++i) {
         var bdata = buffer[i].data
         for(var j=0; j<bdata.length; j+=2) {
           data[ptr++] = bdata[j] + xOffset
           data[ptr++] = bdata[j+1]
         }
         xOffset += buffer[i].shape + 0.02
       }

       mesh = fontcache[text] = {
         data:  data,
         shape: shapeX
       }
     }
   }

   return mesh
}

}).call(this,require('_process'))
},{"_process":923,"vectorize-text":1006}],984:[function(require,module,exports){
(function (process){
var Stream = require('stream')

// through
//
// a stream that does nothing but re-emit the input.
// useful for aggregating a series of changing but not ending streams into one stream)

exports = module.exports = through
through.through = through

//create a readable writable stream.

function through (write, end, opts) {
  write = write || function (data) { this.queue(data) }
  end = end || function () { this.queue(null) }

  var ended = false, destroyed = false, buffer = [], _ended = false
  var stream = new Stream()
  stream.readable = stream.writable = true
  stream.paused = false

//  stream.autoPause   = !(opts && opts.autoPause   === false)
  stream.autoDestroy = !(opts && opts.autoDestroy === false)

  stream.write = function (data) {
    write.call(this, data)
    return !stream.paused
  }

  function drain() {
    while(buffer.length && !stream.paused) {
      var data = buffer.shift()
      if(null === data)
        return stream.emit('end')
      else
        stream.emit('data', data)
    }
  }

  stream.queue = stream.push = function (data) {
//    console.error(ended)
    if(_ended) return stream
    if(data === null) _ended = true
    buffer.push(data)
    drain()
    return stream
  }

  //this will be registered as the first 'end' listener
  //must call destroy next tick, to make sure we're after any
  //stream piped from here.
  //this is only a problem if end is not emitted synchronously.
  //a nicer way to do this is to make sure this is the last listener for 'end'

  stream.on('end', function () {
    stream.readable = false
    if(!stream.writable && stream.autoDestroy)
      process.nextTick(function () {
        stream.destroy()
      })
  })

  function _end () {
    stream.writable = false
    end.call(stream)
    if(!stream.readable && stream.autoDestroy)
      stream.destroy()
  }

  stream.end = function (data) {
    if(ended) return
    ended = true
    if(arguments.length) stream.write(data)
    _end() // will emit or queue
    return stream
  }

  stream.destroy = function () {
    if(destroyed) return
    destroyed = true
    ended = true
    buffer.length = 0
    stream.writable = stream.readable = false
    stream.emit('close')
    return stream
  }

  stream.pause = function () {
    if(stream.paused) return
    stream.paused = true
    return stream
  }

  stream.resume = function () {
    if(stream.paused) {
      stream.paused = false
      stream.emit('resume')
    }
    drain()
    //may have become paused again,
    //as drain emits 'data'.
    if(!stream.paused)
      stream.emit('drain')
    return stream
  }
  return stream
}


}).call(this,require('_process'))
},{"_process":923,"stream":978}],985:[function(require,module,exports){
// TinyColor v1.4.1
// https://github.com/bgrins/TinyColor
// Brian Grinstead, MIT License

(function(Math) {

var trimLeft = /^\s+/,
    trimRight = /\s+$/,
    tinyCounter = 0,
    mathRound = Math.round,
    mathMin = Math.min,
    mathMax = Math.max,
    mathRandom = Math.random;

function tinycolor (color, opts) {

    color = (color) ? color : '';
    opts = opts || { };

    // If input is already a tinycolor, return itself
    if (color instanceof tinycolor) {
       return color;
    }
    // If we are called as a function, call using new instead
    if (!(this instanceof tinycolor)) {
        return new tinycolor(color, opts);
    }

    var rgb = inputToRGB(color);
    this._originalInput = color,
    this._r = rgb.r,
    this._g = rgb.g,
    this._b = rgb.b,
    this._a = rgb.a,
    this._roundA = mathRound(100*this._a) / 100,
    this._format = opts.format || rgb.format;
    this._gradientType = opts.gradientType;

    // Don't let the range of [0,255] come back in [0,1].
    // Potentially lose a little bit of precision here, but will fix issues where
    // .5 gets interpreted as half of the total, instead of half of 1
    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
    if (this._r < 1) { this._r = mathRound(this._r); }
    if (this._g < 1) { this._g = mathRound(this._g); }
    if (this._b < 1) { this._b = mathRound(this._b); }

    this._ok = rgb.ok;
    this._tc_id = tinyCounter++;
}

tinycolor.prototype = {
    isDark: function() {
        return this.getBrightness() < 128;
    },
    isLight: function() {
        return !this.isDark();
    },
    isValid: function() {
        return this._ok;
    },
    getOriginalInput: function() {
      return this._originalInput;
    },
    getFormat: function() {
        return this._format;
    },
    getAlpha: function() {
        return this._a;
    },
    getBrightness: function() {
        //http://www.w3.org/TR/AERT#color-contrast
        var rgb = this.toRgb();
        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
    },
    getLuminance: function() {
        //http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
        var rgb = this.toRgb();
        var RsRGB, GsRGB, BsRGB, R, G, B;
        RsRGB = rgb.r/255;
        GsRGB = rgb.g/255;
        BsRGB = rgb.b/255;

        if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
        if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
        if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
        return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
    },
    setAlpha: function(value) {
        this._a = boundAlpha(value);
        this._roundA = mathRound(100*this._a) / 100;
        return this;
    },
    toHsv: function() {
        var hsv = rgbToHsv(this._r, this._g, this._b);
        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
    },
    toHsvString: function() {
        var hsv = rgbToHsv(this._r, this._g, this._b);
        var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
        return (this._a == 1) ?
          "hsv("  + h + ", " + s + "%, " + v + "%)" :
          "hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
    },
    toHsl: function() {
        var hsl = rgbToHsl(this._r, this._g, this._b);
        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
    },
    toHslString: function() {
        var hsl = rgbToHsl(this._r, this._g, this._b);
        var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
        return (this._a == 1) ?
          "hsl("  + h + ", " + s + "%, " + l + "%)" :
          "hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
    },
    toHex: function(allow3Char) {
        return rgbToHex(this._r, this._g, this._b, allow3Char);
    },
    toHexString: function(allow3Char) {
        return '#' + this.toHex(allow3Char);
    },
    toHex8: function(allow4Char) {
        return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
    },
    toHex8String: function(allow4Char) {
        return '#' + this.toHex8(allow4Char);
    },
    toRgb: function() {
        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
    },
    toRgbString: function() {
        return (this._a == 1) ?
          "rgb("  + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
          "rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
    },
    toPercentageRgb: function() {
        return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
    },
    toPercentageRgbString: function() {
        return (this._a == 1) ?
          "rgb("  + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
          "rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
    },
    toName: function() {
        if (this._a === 0) {
            return "transparent";
        }

        if (this._a < 1) {
            return false;
        }

        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
    },
    toFilter: function(secondColor) {
        var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
        var secondHex8String = hex8String;
        var gradientType = this._gradientType ? "GradientType = 1, " : "";

        if (secondColor) {
            var s = tinycolor(secondColor);
            secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
        }

        return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
    },
    toString: function(format) {
        var formatSet = !!format;
        format = format || this._format;

        var formattedString = false;
        var hasAlpha = this._a < 1 && this._a >= 0;
        var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");

        if (needsAlphaFormat) {
            // Special case for "transparent", all other non-alpha formats
            // will return rgba when there is transparency.
            if (format === "name" && this._a === 0) {
                return this.toName();
            }
            return this.toRgbString();
        }
        if (format === "rgb") {
            formattedString = this.toRgbString();
        }
        if (format === "prgb") {
            formattedString = this.toPercentageRgbString();
        }
        if (format === "hex" || format === "hex6") {
            formattedString = this.toHexString();
        }
        if (format === "hex3") {
            formattedString = this.toHexString(true);
        }
        if (format === "hex4") {
            formattedString = this.toHex8String(true);
        }
        if (format === "hex8") {
            formattedString = this.toHex8String();
        }
        if (format === "name") {
            formattedString = this.toName();
        }
        if (format === "hsl") {
            formattedString = this.toHslString();
        }
        if (format === "hsv") {
            formattedString = this.toHsvString();
        }

        return formattedString || this.toHexString();
    },
    clone: function() {
        return tinycolor(this.toString());
    },

    _applyModification: function(fn, args) {
        var color = fn.apply(null, [this].concat([].slice.call(args)));
        this._r = color._r;
        this._g = color._g;
        this._b = color._b;
        this.setAlpha(color._a);
        return this;
    },
    lighten: function() {
        return this._applyModification(lighten, arguments);
    },
    brighten: function() {
        return this._applyModification(brighten, arguments);
    },
    darken: function() {
        return this._applyModification(darken, arguments);
    },
    desaturate: function() {
        return this._applyModification(desaturate, arguments);
    },
    saturate: function() {
        return this._applyModification(saturate, arguments);
    },
    greyscale: function() {
        return this._applyModification(greyscale, arguments);
    },
    spin: function() {
        return this._applyModification(spin, arguments);
    },

    _applyCombination: function(fn, args) {
        return fn.apply(null, [this].concat([].slice.call(args)));
    },
    analogous: function() {
        return this._applyCombination(analogous, arguments);
    },
    complement: function() {
        return this._applyCombination(complement, arguments);
    },
    monochromatic: function() {
        return this._applyCombination(monochromatic, arguments);
    },
    splitcomplement: function() {
        return this._applyCombination(splitcomplement, arguments);
    },
    triad: function() {
        return this._applyCombination(triad, arguments);
    },
    tetrad: function() {
        return this._applyCombination(tetrad, arguments);
    }
};

// If input is an object, force 1 into "1.0" to handle ratios properly
// String input requires "1.0" as input, so 1 will be treated as 1
tinycolor.fromRatio = function(color, opts) {
    if (typeof color == "object") {
        var newColor = {};
        for (var i in color) {
            if (color.hasOwnProperty(i)) {
                if (i === "a") {
                    newColor[i] = color[i];
                }
                else {
                    newColor[i] = convertToPercentage(color[i]);
                }
            }
        }
        color = newColor;
    }

    return tinycolor(color, opts);
};

// Given a string or object, convert that input to RGB
// Possible string inputs:
//
//     "red"
//     "#f00" or "f00"
//     "#ff0000" or "ff0000"
//     "#ff000000" or "ff000000"
//     "rgb 255 0 0" or "rgb (255, 0, 0)"
//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
//
function inputToRGB(color) {

    var rgb = { r: 0, g: 0, b: 0 };
    var a = 1;
    var s = null;
    var v = null;
    var l = null;
    var ok = false;
    var format = false;

    if (typeof color == "string") {
        color = stringInputToObject(color);
    }

    if (typeof color == "object") {
        if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
            rgb = rgbToRgb(color.r, color.g, color.b);
            ok = true;
            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
        }
        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
            s = convertToPercentage(color.s);
            v = convertToPercentage(color.v);
            rgb = hsvToRgb(color.h, s, v);
            ok = true;
            format = "hsv";
        }
        else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
            s = convertToPercentage(color.s);
            l = convertToPercentage(color.l);
            rgb = hslToRgb(color.h, s, l);
            ok = true;
            format = "hsl";
        }

        if (color.hasOwnProperty("a")) {
            a = color.a;
        }
    }

    a = boundAlpha(a);

    return {
        ok: ok,
        format: color.format || format,
        r: mathMin(255, mathMax(rgb.r, 0)),
        g: mathMin(255, mathMax(rgb.g, 0)),
        b: mathMin(255, mathMax(rgb.b, 0)),
        a: a
    };
}


// Conversion Functions
// --------------------

// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>

// `rgbToRgb`
// Handle bounds / percentage checking to conform to CSS color spec
// <http://www.w3.org/TR/css3-color/>
// *Assumes:* r, g, b in [0, 255] or [0, 1]
// *Returns:* { r, g, b } in [0, 255]
function rgbToRgb(r, g, b){
    return {
        r: bound01(r, 255) * 255,
        g: bound01(g, 255) * 255,
        b: bound01(b, 255) * 255
    };
}

// `rgbToHsl`
// Converts an RGB color value to HSL.
// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
// *Returns:* { h, s, l } in [0,1]
function rgbToHsl(r, g, b) {

    r = bound01(r, 255);
    g = bound01(g, 255);
    b = bound01(b, 255);

    var max = mathMax(r, g, b), min = mathMin(r, g, b);
    var h, s, l = (max + min) / 2;

    if(max == min) {
        h = s = 0; // achromatic
    }
    else {
        var d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        switch(max) {
            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
            case g: h = (b - r) / d + 2; break;
            case b: h = (r - g) / d + 4; break;
        }

        h /= 6;
    }

    return { h: h, s: s, l: l };
}

// `hslToRgb`
// Converts an HSL color value to RGB.
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
// *Returns:* { r, g, b } in the set [0, 255]
function hslToRgb(h, s, l) {
    var r, g, b;

    h = bound01(h, 360);
    s = bound01(s, 100);
    l = bound01(l, 100);

    function hue2rgb(p, q, t) {
        if(t < 0) t += 1;
        if(t > 1) t -= 1;
        if(t < 1/6) return p + (q - p) * 6 * t;
        if(t < 1/2) return q;
        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
        return p;
    }

    if(s === 0) {
        r = g = b = l; // achromatic
    }
    else {
        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
        var p = 2 * l - q;
        r = hue2rgb(p, q, h + 1/3);
        g = hue2rgb(p, q, h);
        b = hue2rgb(p, q, h - 1/3);
    }

    return { r: r * 255, g: g * 255, b: b * 255 };
}

// `rgbToHsv`
// Converts an RGB color value to HSV
// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
// *Returns:* { h, s, v } in [0,1]
function rgbToHsv(r, g, b) {

    r = bound01(r, 255);
    g = bound01(g, 255);
    b = bound01(b, 255);

    var max = mathMax(r, g, b), min = mathMin(r, g, b);
    var h, s, v = max;

    var d = max - min;
    s = max === 0 ? 0 : d / max;

    if(max == min) {
        h = 0; // achromatic
    }
    else {
        switch(max) {
            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
            case g: h = (b - r) / d + 2; break;
            case b: h = (r - g) / d + 4; break;
        }
        h /= 6;
    }
    return { h: h, s: s, v: v };
}

// `hsvToRgb`
// Converts an HSV color value to RGB.
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
// *Returns:* { r, g, b } in the set [0, 255]
 function hsvToRgb(h, s, v) {

    h = bound01(h, 360) * 6;
    s = bound01(s, 100);
    v = bound01(v, 100);

    var i = Math.floor(h),
        f = h - i,
        p = v * (1 - s),
        q = v * (1 - f * s),
        t = v * (1 - (1 - f) * s),
        mod = i % 6,
        r = [v, q, p, p, t, v][mod],
        g = [t, v, v, q, p, p][mod],
        b = [p, p, t, v, v, q][mod];

    return { r: r * 255, g: g * 255, b: b * 255 };
}

// `rgbToHex`
// Converts an RGB color to hex
// Assumes r, g, and b are contained in the set [0, 255]
// Returns a 3 or 6 character hex
function rgbToHex(r, g, b, allow3Char) {

    var hex = [
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16))
    ];

    // Return a 3 character hex if possible
    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
    }

    return hex.join("");
}

// `rgbaToHex`
// Converts an RGBA color plus alpha transparency to hex
// Assumes r, g, b are contained in the set [0, 255] and
// a in [0, 1]. Returns a 4 or 8 character rgba hex
function rgbaToHex(r, g, b, a, allow4Char) {

    var hex = [
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16)),
        pad2(convertDecimalToHex(a))
    ];

    // Return a 4 character hex if possible
    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
    }

    return hex.join("");
}

// `rgbaToArgbHex`
// Converts an RGBA color to an ARGB Hex8 string
// Rarely used, but required for "toFilter()"
function rgbaToArgbHex(r, g, b, a) {

    var hex = [
        pad2(convertDecimalToHex(a)),
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16))
    ];

    return hex.join("");
}

// `equals`
// Can be called with any tinycolor input
tinycolor.equals = function (color1, color2) {
    if (!color1 || !color2) { return false; }
    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
};

tinycolor.random = function() {
    return tinycolor.fromRatio({
        r: mathRandom(),
        g: mathRandom(),
        b: mathRandom()
    });
};


// Modification Functions
// ----------------------
// Thanks to less.js for some of the basics here
// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>

function desaturate(color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.s -= amount / 100;
    hsl.s = clamp01(hsl.s);
    return tinycolor(hsl);
}

function saturate(color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.s += amount / 100;
    hsl.s = clamp01(hsl.s);
    return tinycolor(hsl);
}

function greyscale(color) {
    return tinycolor(color).desaturate(100);
}

function lighten (color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.l += amount / 100;
    hsl.l = clamp01(hsl.l);
    return tinycolor(hsl);
}

function brighten(color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var rgb = tinycolor(color).toRgb();
    rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
    rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
    rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
    return tinycolor(rgb);
}

function darken (color, amount) {
    amount = (amount === 0) ? 0 : (amount || 10);
    var hsl = tinycolor(color).toHsl();
    hsl.l -= amount / 100;
    hsl.l = clamp01(hsl.l);
    return tinycolor(hsl);
}

// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
// Values outside of this range will be wrapped into this range.
function spin(color, amount) {
    var hsl = tinycolor(color).toHsl();
    var hue = (hsl.h + amount) % 360;
    hsl.h = hue < 0 ? 360 + hue : hue;
    return tinycolor(hsl);
}

// Combination Functions
// ---------------------
// Thanks to jQuery xColor for some of the ideas behind these
// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>

function complement(color) {
    var hsl = tinycolor(color).toHsl();
    hsl.h = (hsl.h + 180) % 360;
    return tinycolor(hsl);
}

function triad(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [
        tinycolor(color),
        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
    ];
}

function tetrad(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [
        tinycolor(color),
        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
    ];
}

function splitcomplement(color) {
    var hsl = tinycolor(color).toHsl();
    var h = hsl.h;
    return [
        tinycolor(color),
        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
    ];
}

function analogous(color, results, slices) {
    results = results || 6;
    slices = slices || 30;

    var hsl = tinycolor(color).toHsl();
    var part = 360 / slices;
    var ret = [tinycolor(color)];

    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
        hsl.h = (hsl.h + part) % 360;
        ret.push(tinycolor(hsl));
    }
    return ret;
}

function monochromatic(color, results) {
    results = results || 6;
    var hsv = tinycolor(color).toHsv();
    var h = hsv.h, s = hsv.s, v = hsv.v;
    var ret = [];
    var modification = 1 / results;

    while (results--) {
        ret.push(tinycolor({ h: h, s: s, v: v}));
        v = (v + modification) % 1;
    }

    return ret;
}

// Utility Functions
// ---------------------

tinycolor.mix = function(color1, color2, amount) {
    amount = (amount === 0) ? 0 : (amount || 50);

    var rgb1 = tinycolor(color1).toRgb();
    var rgb2 = tinycolor(color2).toRgb();

    var p = amount / 100;

    var rgba = {
        r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
        g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
        b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
        a: ((rgb2.a - rgb1.a) * p) + rgb1.a
    };

    return tinycolor(rgba);
};


// Readability Functions
// ---------------------
// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)

// `contrast`
// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
tinycolor.readability = function(color1, color2) {
    var c1 = tinycolor(color1);
    var c2 = tinycolor(color2);
    return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
};

// `isReadable`
// Ensure that foreground and background color combinations meet WCAG2 guidelines.
// The third argument is an optional Object.
//      the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
//      the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.

// *Example*
//    tinycolor.isReadable("#000", "#111") => false
//    tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
tinycolor.isReadable = function(color1, color2, wcag2) {
    var readability = tinycolor.readability(color1, color2);
    var wcag2Parms, out;

    out = false;

    wcag2Parms = validateWCAG2Parms(wcag2);
    switch (wcag2Parms.level + wcag2Parms.size) {
        case "AAsmall":
        case "AAAlarge":
            out = readability >= 4.5;
            break;
        case "AAlarge":
            out = readability >= 3;
            break;
        case "AAAsmall":
            out = readability >= 7;
            break;
    }
    return out;

};

// `mostReadable`
// Given a base color and a list of possible foreground or background
// colors for that base, returns the most readable color.
// Optionally returns Black or White if the most readable color is unreadable.
// *Example*
//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
//    tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString();  // "#ffffff"
//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
//    tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
tinycolor.mostReadable = function(baseColor, colorList, args) {
    var bestColor = null;
    var bestScore = 0;
    var readability;
    var includeFallbackColors, level, size ;
    args = args || {};
    includeFallbackColors = args.includeFallbackColors ;
    level = args.level;
    size = args.size;

    for (var i= 0; i < colorList.length ; i++) {
        readability = tinycolor.readability(baseColor, colorList[i]);
        if (readability > bestScore) {
            bestScore = readability;
            bestColor = tinycolor(colorList[i]);
        }
    }

    if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
        return bestColor;
    }
    else {
        args.includeFallbackColors=false;
        return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
    }
};


// Big List of Colors
// ------------------
// <http://www.w3.org/TR/css3-color/#svg-color>
var names = tinycolor.names = {
    aliceblue: "f0f8ff",
    antiquewhite: "faebd7",
    aqua: "0ff",
    aquamarine: "7fffd4",
    azure: "f0ffff",
    beige: "f5f5dc",
    bisque: "ffe4c4",
    black: "000",
    blanchedalmond: "ffebcd",
    blue: "00f",
    blueviolet: "8a2be2",
    brown: "a52a2a",
    burlywood: "deb887",
    burntsienna: "ea7e5d",
    cadetblue: "5f9ea0",
    chartreuse: "7fff00",
    chocolate: "d2691e",
    coral: "ff7f50",
    cornflowerblue: "6495ed",
    cornsilk: "fff8dc",
    crimson: "dc143c",
    cyan: "0ff",
    darkblue: "00008b",
    darkcyan: "008b8b",
    darkgoldenrod: "b8860b",
    darkgray: "a9a9a9",
    darkgreen: "006400",
    darkgrey: "a9a9a9",
    darkkhaki: "bdb76b",
    darkmagenta: "8b008b",
    darkolivegreen: "556b2f",
    darkorange: "ff8c00",
    darkorchid: "9932cc",
    darkred: "8b0000",
    darksalmon: "e9967a",
    darkseagreen: "8fbc8f",
    darkslateblue: "483d8b",
    darkslategray: "2f4f4f",
    darkslategrey: "2f4f4f",
    darkturquoise: "00ced1",
    darkviolet: "9400d3",
    deeppink: "ff1493",
    deepskyblue: "00bfff",
    dimgray: "696969",
    dimgrey: "696969",
    dodgerblue: "1e90ff",
    firebrick: "b22222",
    floralwhite: "fffaf0",
    forestgreen: "228b22",
    fuchsia: "f0f",
    gainsboro: "dcdcdc",
    ghostwhite: "f8f8ff",
    gold: "ffd700",
    goldenrod: "daa520",
    gray: "808080",
    green: "008000",
    greenyellow: "adff2f",
    grey: "808080",
    honeydew: "f0fff0",
    hotpink: "ff69b4",
    indianred: "cd5c5c",
    indigo: "4b0082",
    ivory: "fffff0",
    khaki: "f0e68c",
    lavender: "e6e6fa",
    lavenderblush: "fff0f5",
    lawngreen: "7cfc00",
    lemonchiffon: "fffacd",
    lightblue: "add8e6",
    lightcoral: "f08080",
    lightcyan: "e0ffff",
    lightgoldenrodyellow: "fafad2",
    lightgray: "d3d3d3",
    lightgreen: "90ee90",
    lightgrey: "d3d3d3",
    lightpink: "ffb6c1",
    lightsalmon: "ffa07a",
    lightseagreen: "20b2aa",
    lightskyblue: "87cefa",
    lightslategray: "789",
    lightslategrey: "789",
    lightsteelblue: "b0c4de",
    lightyellow: "ffffe0",
    lime: "0f0",
    limegreen: "32cd32",
    linen: "faf0e6",
    magenta: "f0f",
    maroon: "800000",
    mediumaquamarine: "66cdaa",
    mediumblue: "0000cd",
    mediumorchid: "ba55d3",
    mediumpurple: "9370db",
    mediumseagreen: "3cb371",
    mediumslateblue: "7b68ee",
    mediumspringgreen: "00fa9a",
    mediumturquoise: "48d1cc",
    mediumvioletred: "c71585",
    midnightblue: "191970",
    mintcream: "f5fffa",
    mistyrose: "ffe4e1",
    moccasin: "ffe4b5",
    navajowhite: "ffdead",
    navy: "000080",
    oldlace: "fdf5e6",
    olive: "808000",
    olivedrab: "6b8e23",
    orange: "ffa500",
    orangered: "ff4500",
    orchid: "da70d6",
    palegoldenrod: "eee8aa",
    palegreen: "98fb98",
    paleturquoise: "afeeee",
    palevioletred: "db7093",
    papayawhip: "ffefd5",
    peachpuff: "ffdab9",
    peru: "cd853f",
    pink: "ffc0cb",
    plum: "dda0dd",
    powderblue: "b0e0e6",
    purple: "800080",
    rebeccapurple: "663399",
    red: "f00",
    rosybrown: "bc8f8f",
    royalblue: "4169e1",
    saddlebrown: "8b4513",
    salmon: "fa8072",
    sandybrown: "f4a460",
    seagreen: "2e8b57",
    seashell: "fff5ee",
    sienna: "a0522d",
    silver: "c0c0c0",
    skyblue: "87ceeb",
    slateblue: "6a5acd",
    slategray: "708090",
    slategrey: "708090",
    snow: "fffafa",
    springgreen: "00ff7f",
    steelblue: "4682b4",
    tan: "d2b48c",
    teal: "008080",
    thistle: "d8bfd8",
    tomato: "ff6347",
    turquoise: "40e0d0",
    violet: "ee82ee",
    wheat: "f5deb3",
    white: "fff",
    whitesmoke: "f5f5f5",
    yellow: "ff0",
    yellowgreen: "9acd32"
};

// Make it easy to access colors via `hexNames[hex]`
var hexNames = tinycolor.hexNames = flip(names);


// Utilities
// ---------

// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
function flip(o) {
    var flipped = { };
    for (var i in o) {
        if (o.hasOwnProperty(i)) {
            flipped[o[i]] = i;
        }
    }
    return flipped;
}

// Return a valid alpha value [0,1] with all invalid values being set to 1
function boundAlpha(a) {
    a = parseFloat(a);

    if (isNaN(a) || a < 0 || a > 1) {
        a = 1;
    }

    return a;
}

// Take input from [0, n] and return it as [0, 1]
function bound01(n, max) {
    if (isOnePointZero(n)) { n = "100%"; }

    var processPercent = isPercentage(n);
    n = mathMin(max, mathMax(0, parseFloat(n)));

    // Automatically convert percentage into number
    if (processPercent) {
        n = parseInt(n * max, 10) / 100;
    }

    // Handle floating point rounding errors
    if ((Math.abs(n - max) < 0.000001)) {
        return 1;
    }

    // Convert into [0, 1] range if it isn't already
    return (n % max) / parseFloat(max);
}

// Force a number between 0 and 1
function clamp01(val) {
    return mathMin(1, mathMax(0, val));
}

// Parse a base-16 hex value into a base-10 integer
function parseIntFromHex(val) {
    return parseInt(val, 16);
}

// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
function isOnePointZero(n) {
    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
}

// Check to see if string passed in is a percentage
function isPercentage(n) {
    return typeof n === "string" && n.indexOf('%') != -1;
}

// Force a hex value to have 2 characters
function pad2(c) {
    return c.length == 1 ? '0' + c : '' + c;
}

// Replace a decimal with it's percentage value
function convertToPercentage(n) {
    if (n <= 1) {
        n = (n * 100) + "%";
    }

    return n;
}

// Converts a decimal to a hex value
function convertDecimalToHex(d) {
    return Math.round(parseFloat(d) * 255).toString(16);
}
// Converts a hex value to a decimal
function convertHexToDecimal(h) {
    return (parseIntFromHex(h) / 255);
}

var matchers = (function() {

    // <http://www.w3.org/TR/css3-values/#integers>
    var CSS_INTEGER = "[-\\+]?\\d+%?";

    // <http://www.w3.org/TR/css3-values/#number-value>
    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";

    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";

    // Actual matching.
    // Parentheses and commas are optional, but not required.
    // Whitespace can take the place of commas or opening paren
    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";

    return {
        CSS_UNIT: new RegExp(CSS_UNIT),
        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
        hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
        hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
        hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
        hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
        hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
    };
})();

// `isValidCSSUnit`
// Take in a single string / number and check to see if it looks like a CSS unit
// (see `matchers` above for definition).
function isValidCSSUnit(color) {
    return !!matchers.CSS_UNIT.exec(color);
}

// `stringInputToObject`
// Permissive string parsing.  Take in a number of formats, and output an object
// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
function stringInputToObject(color) {

    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
    var named = false;
    if (names[color]) {
        color = names[color];
        named = true;
    }
    else if (color == 'transparent') {
        return { r: 0, g: 0, b: 0, a: 0, format: "name" };
    }

    // Try to match string input using regular expressions.
    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
    // Just return an object and let the conversion functions handle that.
    // This way the result will be the same whether the tinycolor is initialized with string or object.
    var match;
    if ((match = matchers.rgb.exec(color))) {
        return { r: match[1], g: match[2], b: match[3] };
    }
    if ((match = matchers.rgba.exec(color))) {
        return { r: match[1], g: match[2], b: match[3], a: match[4] };
    }
    if ((match = matchers.hsl.exec(color))) {
        return { h: match[1], s: match[2], l: match[3] };
    }
    if ((match = matchers.hsla.exec(color))) {
        return { h: match[1], s: match[2], l: match[3], a: match[4] };
    }
    if ((match = matchers.hsv.exec(color))) {
        return { h: match[1], s: match[2], v: match[3] };
    }
    if ((match = matchers.hsva.exec(color))) {
        return { h: match[1], s: match[2], v: match[3], a: match[4] };
    }
    if ((match = matchers.hex8.exec(color))) {
        return {
            r: parseIntFromHex(match[1]),
            g: parseIntFromHex(match[2]),
            b: parseIntFromHex(match[3]),
            a: convertHexToDecimal(match[4]),
            format: named ? "name" : "hex8"
        };
    }
    if ((match = matchers.hex6.exec(color))) {
        return {
            r: parseIntFromHex(match[1]),
            g: parseIntFromHex(match[2]),
            b: parseIntFromHex(match[3]),
            format: named ? "name" : "hex"
        };
    }
    if ((match = matchers.hex4.exec(color))) {
        return {
            r: parseIntFromHex(match[1] + '' + match[1]),
            g: parseIntFromHex(match[2] + '' + match[2]),
            b: parseIntFromHex(match[3] + '' + match[3]),
            a: convertHexToDecimal(match[4] + '' + match[4]),
            format: named ? "name" : "hex8"
        };
    }
    if ((match = matchers.hex3.exec(color))) {
        return {
            r: parseIntFromHex(match[1] + '' + match[1]),
            g: parseIntFromHex(match[2] + '' + match[2]),
            b: parseIntFromHex(match[3] + '' + match[3]),
            format: named ? "name" : "hex"
        };
    }

    return false;
}

function validateWCAG2Parms(parms) {
    // return valid WCAG2 parms for isReadable.
    // If input parms are invalid, return {"level":"AA", "size":"small"}
    var level, size;
    parms = parms || {"level":"AA", "size":"small"};
    level = (parms.level || "AA").toUpperCase();
    size = (parms.size || "small").toLowerCase();
    if (level !== "AA" && level !== "AAA") {
        level = "AA";
    }
    if (size !== "small" && size !== "large") {
        size = "small";
    }
    return {"level":level, "size":size};
}

// Node: Export function
if (typeof module !== "undefined" && module.exports) {
    module.exports = tinycolor;
}
// AMD/requirejs: Define the module
else if (typeof define === 'function' && define.amd) {
    define(function () {return tinycolor;});
}
// Browser: Expose to window
else {
    window.tinycolor = tinycolor;
}

})(Math);

},{}],986:[function(require,module,exports){
'use strict'

var parseUnit = require('parse-unit')

module.exports = toPX

var PIXELS_PER_INCH = 96

function getPropertyInPX(element, prop) {
  var parts = parseUnit(getComputedStyle(element).getPropertyValue(prop))
  return parts[0] * toPX(parts[1], element)
}

//This brutal hack is needed
function getSizeBrutal(unit, element) {
  var testDIV = document.createElement('div')
  testDIV.style['font-size'] = '128' + unit
  element.appendChild(testDIV)
  var size = getPropertyInPX(testDIV, 'font-size') / 128
  element.removeChild(testDIV)
  return size
}

function toPX(str, element) {
  element = element || document.body
  str = (str || 'px').trim().toLowerCase()
  if(element === window || element === document) {
    element = document.body 
  }
  switch(str) {
    case '%':  //Ambiguous, not sure if we should use width or height
      return element.clientHeight / 100.0
    case 'ch':
    case 'ex':
      return getSizeBrutal(str, element)
    case 'em':
      return getPropertyInPX(element, 'font-size')
    case 'rem':
      return getPropertyInPX(document.body, 'font-size')
    case 'vw':
      return window.innerWidth/100
    case 'vh':
      return window.innerHeight/100
    case 'vmin':
      return Math.min(window.innerWidth, window.innerHeight) / 100
    case 'vmax':
      return Math.max(window.innerWidth, window.innerHeight) / 100
    case 'in':
      return PIXELS_PER_INCH
    case 'cm':
      return PIXELS_PER_INCH / 2.54
    case 'mm':
      return PIXELS_PER_INCH / 25.4
    case 'pt':
      return PIXELS_PER_INCH / 72
    case 'pc':
      return PIXELS_PER_INCH / 6
  }
  return 1
}
},{"parse-unit":462}],987:[function(require,module,exports){
// https://github.com/topojson/topojson-client Version 2.1.0. Copyright 2016 Mike Bostock.
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (factory((global.topojson = global.topojson || {})));
}(this, (function (exports) { 'use strict';

var identity = function(x) {
  return x;
};

var transform = function(topology) {
  if ((transform = topology.transform) == null) return identity;
  var transform,
      x0,
      y0,
      kx = transform.scale[0],
      ky = transform.scale[1],
      dx = transform.translate[0],
      dy = transform.translate[1];
  return function(point, i) {
    if (!i) x0 = y0 = 0;
    point[0] = (x0 += point[0]) * kx + dx;
    point[1] = (y0 += point[1]) * ky + dy;
    return point;
  };
};

var bbox = function(topology) {
  var bbox = topology.bbox;

  function bboxPoint(p0) {
    p1[0] = p0[0], p1[1] = p0[1], t(p1);
    if (p1[0] < x0) x0 = p1[0];
    if (p1[0] > x1) x1 = p1[0];
    if (p1[1] < y0) y0 = p1[1];
    if (p1[1] > y1) y1 = p1[1];
  }

  function bboxGeometry(o) {
    switch (o.type) {
      case "GeometryCollection": o.geometries.forEach(bboxGeometry); break;
      case "Point": bboxPoint(o.coordinates); break;
      case "MultiPoint": o.coordinates.forEach(bboxPoint); break;
    }
  }

  if (!bbox) {
    var t = transform(topology), p0, p1 = new Array(2), name,
        x0 = Infinity, y0 = x0, x1 = -x0, y1 = -x0;

    topology.arcs.forEach(function(arc) {
      var i = -1, n = arc.length;
      while (++i < n) {
        p0 = arc[i], p1[0] = p0[0], p1[1] = p0[1], t(p1, i);
        if (p1[0] < x0) x0 = p1[0];
        if (p1[0] > x1) x1 = p1[0];
        if (p1[1] < y0) y0 = p1[1];
        if (p1[1] > y1) y1 = p1[1];
      }
    });

    for (name in topology.objects) {
      bboxGeometry(topology.objects[name]);
    }

    bbox = topology.bbox = [x0, y0, x1, y1];
  }

  return bbox;
};

var reverse = function(array, n) {
  var t, j = array.length, i = j - n;
  while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
};

var feature = function(topology, o) {
  return o.type === "GeometryCollection"
      ? {type: "FeatureCollection", features: o.geometries.map(function(o) { return feature$1(topology, o); })}
      : feature$1(topology, o);
};

function feature$1(topology, o) {
  var id = o.id,
      bbox = o.bbox,
      properties = o.properties == null ? {} : o.properties,
      geometry = object(topology, o);
  return id == null && bbox == null ? {type: "Feature", properties: properties, geometry: geometry}
      : bbox == null ? {type: "Feature", id: id, properties: properties, geometry: geometry}
      : {type: "Feature", id: id, bbox: bbox, properties: properties, geometry: geometry};
}

function object(topology, o) {
  var transformPoint = transform(topology),
      arcs = topology.arcs;

  function arc(i, points) {
    if (points.length) points.pop();
    for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length; k < n; ++k) {
      points.push(transformPoint(a[k].slice(), k));
    }
    if (i < 0) reverse(points, n);
  }

  function point(p) {
    return transformPoint(p.slice());
  }

  function line(arcs) {
    var points = [];
    for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
    if (points.length < 2) points.push(points[0].slice());
    return points;
  }

  function ring(arcs) {
    var points = line(arcs);
    while (points.length < 4) points.push(points[0].slice());
    return points;
  }

  function polygon(arcs) {
    return arcs.map(ring);
  }

  function geometry(o) {
    var type = o.type, coordinates;
    switch (type) {
      case "GeometryCollection": return {type: type, geometries: o.geometries.map(geometry)};
      case "Point": coordinates = point(o.coordinates); break;
      case "MultiPoint": coordinates = o.coordinates.map(point); break;
      case "LineString": coordinates = line(o.arcs); break;
      case "MultiLineString": coordinates = o.arcs.map(line); break;
      case "Polygon": coordinates = polygon(o.arcs); break;
      case "MultiPolygon": coordinates = o.arcs.map(polygon); break;
      default: return null;
    }
    return {type: type, coordinates: coordinates};
  }

  return geometry(o);
}

var stitch = function(topology, arcs) {
  var stitchedArcs = {},
      fragmentByStart = {},
      fragmentByEnd = {},
      fragments = [],
      emptyIndex = -1;

  // Stitch empty arcs first, since they may be subsumed by other arcs.
  arcs.forEach(function(i, j) {
    var arc = topology.arcs[i < 0 ? ~i : i], t;
    if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
      t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
    }
  });

  arcs.forEach(function(i) {
    var e = ends(i),
        start = e[0],
        end = e[1],
        f, g;

    if (f = fragmentByEnd[start]) {
      delete fragmentByEnd[f.end];
      f.push(i);
      f.end = end;
      if (g = fragmentByStart[end]) {
        delete fragmentByStart[g.start];
        var fg = g === f ? f : f.concat(g);
        fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
      } else {
        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
      }
    } else if (f = fragmentByStart[end]) {
      delete fragmentByStart[f.start];
      f.unshift(i);
      f.start = start;
      if (g = fragmentByEnd[start]) {
        delete fragmentByEnd[g.end];
        var gf = g === f ? f : g.concat(f);
        fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
      } else {
        fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
      }
    } else {
      f = [i];
      fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
    }
  });

  function ends(i) {
    var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
    if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
    else p1 = arc[arc.length - 1];
    return i < 0 ? [p1, p0] : [p0, p1];
  }

  function flush(fragmentByEnd, fragmentByStart) {
    for (var k in fragmentByEnd) {
      var f = fragmentByEnd[k];
      delete fragmentByStart[f.start];
      delete f.start;
      delete f.end;
      f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
      fragments.push(f);
    }
  }

  flush(fragmentByEnd, fragmentByStart);
  flush(fragmentByStart, fragmentByEnd);
  arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });

  return fragments;
};

var mesh = function(topology) {
  return object(topology, meshArcs.apply(this, arguments));
};

function meshArcs(topology, object$$1, filter) {
  var arcs, i, n;
  if (arguments.length > 1) arcs = extractArcs(topology, object$$1, filter);
  else for (i = 0, arcs = new Array(n = topology.arcs.length); i < n; ++i) arcs[i] = i;
  return {type: "MultiLineString", arcs: stitch(topology, arcs)};
}

function extractArcs(topology, object$$1, filter) {
  var arcs = [],
      geomsByArc = [],
      geom;

  function extract0(i) {
    var j = i < 0 ? ~i : i;
    (geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
  }

  function extract1(arcs) {
    arcs.forEach(extract0);
  }

  function extract2(arcs) {
    arcs.forEach(extract1);
  }

  function extract3(arcs) {
    arcs.forEach(extract2);
  }

  function geometry(o) {
    switch (geom = o, o.type) {
      case "GeometryCollection": o.geometries.forEach(geometry); break;
      case "LineString": extract1(o.arcs); break;
      case "MultiLineString": case "Polygon": extract2(o.arcs); break;
      case "MultiPolygon": extract3(o.arcs); break;
    }
  }

  geometry(object$$1);

  geomsByArc.forEach(filter == null
      ? function(geoms) { arcs.push(geoms[0].i); }
      : function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });

  return arcs;
}

function planarRingArea(ring) {
  var i = -1, n = ring.length, a, b = ring[n - 1], area = 0;
  while (++i < n) a = b, b = ring[i], area += a[0] * b[1] - a[1] * b[0];
  return Math.abs(area); // Note: doubled area!
}

var merge = function(topology) {
  return object(topology, mergeArcs.apply(this, arguments));
};

function mergeArcs(topology, objects) {
  var polygonsByArc = {},
      polygons = [],
      groups = [];

  objects.forEach(geometry);

  function geometry(o) {
    switch (o.type) {
      case "GeometryCollection": o.geometries.forEach(geometry); break;
      case "Polygon": extract(o.arcs); break;
      case "MultiPolygon": o.arcs.forEach(extract); break;
    }
  }

  function extract(polygon) {
    polygon.forEach(function(ring) {
      ring.forEach(function(arc) {
        (polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
      });
    });
    polygons.push(polygon);
  }

  function area(ring) {
    return planarRingArea(object(topology, {type: "Polygon", arcs: [ring]}).coordinates[0]);
  }

  polygons.forEach(function(polygon) {
    if (!polygon._) {
      var group = [],
          neighbors = [polygon];
      polygon._ = 1;
      groups.push(group);
      while (polygon = neighbors.pop()) {
        group.push(polygon);
        polygon.forEach(function(ring) {
          ring.forEach(function(arc) {
            polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
              if (!polygon._) {
                polygon._ = 1;
                neighbors.push(polygon);
              }
            });
          });
        });
      }
    }
  });

  polygons.forEach(function(polygon) {
    delete polygon._;
  });

  return {
    type: "MultiPolygon",
    arcs: groups.map(function(polygons) {
      var arcs = [], n;

      // Extract the exterior (unique) arcs.
      polygons.forEach(function(polygon) {
        polygon.forEach(function(ring) {
          ring.forEach(function(arc) {
            if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
              arcs.push(arc);
            }
          });
        });
      });

      // Stitch the arcs into one or more rings.
      arcs = stitch(topology, arcs);

      // If more than one ring is returned,
      // at most one of these rings can be the exterior;
      // choose the one with the greatest absolute area.
      if ((n = arcs.length) > 1) {
        for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
          if ((ki = area(arcs[i])) > k) {
            t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
          }
        }
      }

      return arcs;
    })
  };
}

var bisect = function(a, x) {
  var lo = 0, hi = a.length;
  while (lo < hi) {
    var mid = lo + hi >>> 1;
    if (a[mid] < x) lo = mid + 1;
    else hi = mid;
  }
  return lo;
};

var neighbors = function(objects) {
  var indexesByArc = {}, // arc index -> array of object indexes
      neighbors = objects.map(function() { return []; });

  function line(arcs, i) {
    arcs.forEach(function(a) {
      if (a < 0) a = ~a;
      var o = indexesByArc[a];
      if (o) o.push(i);
      else indexesByArc[a] = [i];
    });
  }

  function polygon(arcs, i) {
    arcs.forEach(function(arc) { line(arc, i); });
  }

  function geometry(o, i) {
    if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
    else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
  }

  var geometryType = {
    LineString: line,
    MultiLineString: polygon,
    Polygon: polygon,
    MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
  };

  objects.forEach(geometry);

  for (var i in indexesByArc) {
    for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
      for (var k = j + 1; k < m; ++k) {
        var ij = indexes[j], ik = indexes[k], n;
        if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
        if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
      }
    }
  }

  return neighbors;
};

var quantize = function(topology, n) {
  if (!((n = Math.floor(n)) >= 2)) throw new Error("n must be ≥2");
  if (topology.transform) throw new Error("already quantized");
  var bb = bbox(topology), name,
      dx = bb[0], kx = (bb[2] - dx) / (n - 1) || 1,
      dy = bb[1], ky = (bb[3] - dy) / (n - 1) || 1;

  function quantizePoint(p) {
    p[0] = Math.round((p[0] - dx) / kx);
    p[1] = Math.round((p[1] - dy) / ky);
  }

  function quantizeGeometry(o) {
    switch (o.type) {
      case "GeometryCollection": o.geometries.forEach(quantizeGeometry); break;
      case "Point": quantizePoint(o.coordinates); break;
      case "MultiPoint": o.coordinates.forEach(quantizePoint); break;
    }
  }

  topology.arcs.forEach(function(arc) {
    var i = 1,
        j = 1,
        n = arc.length,
        pi = arc[0],
        x0 = pi[0] = Math.round((pi[0] - dx) / kx),
        y0 = pi[1] = Math.round((pi[1] - dy) / ky),
        pj,
        x1,
        y1;

    for (; i < n; ++i) {
      pi = arc[i];
      x1 = Math.round((pi[0] - dx) / kx);
      y1 = Math.round((pi[1] - dy) / ky);
      if (x1 !== x0 || y1 !== y0) {
        pj = arc[j++];
        pj[0] = x1 - x0, x0 = x1;
        pj[1] = y1 - y0, y0 = y1;
      }
    }

    if (j < 2) {
      pj = arc[j++];
      pj[0] = 0;
      pj[1] = 0;
    }

    arc.length = j;
  });

  for (name in topology.objects) {
    quantizeGeometry(topology.objects[name]);
  }

  topology.transform = {
    scale: [kx, ky],
    translate: [dx, dy]
  };

  return topology;
};

var untransform = function(topology) {
  if ((transform = topology.transform) == null) return identity;
  var transform,
      x0,
      y0,
      kx = transform.scale[0],
      ky = transform.scale[1],
      dx = transform.translate[0],
      dy = transform.translate[1];
  return function(point, i) {
    if (!i) x0 = y0 = 0;
    var x1 = Math.round((point[0] - dx) / kx),
        y1 = Math.round((point[1] - dy) / ky);
    point[0] = x1 - x0, x0 = x1;
    point[1] = y1 - y0, y0 = y1;
    return point;
  };
};

exports.bbox = bbox;
exports.feature = feature;
exports.mesh = mesh;
exports.meshArcs = meshArcs;
exports.merge = merge;
exports.mergeArcs = mergeArcs;
exports.neighbors = neighbors;
exports.quantize = quantize;
exports.transform = transform;
exports.untransform = untransform;

Object.defineProperty(exports, '__esModule', { value: true });

})));

},{}],988:[function(require,module,exports){
"use strict"

module.exports = triangulateCube

var perm = require("permutation-rank")
var sgn = require("permutation-parity")
var gamma = require("gamma")

function triangulateCube(dimension) {
  if(dimension < 0) {
    return [ ]
  }
  if(dimension === 0) {
    return [ [0] ]
  }
  var dfactorial = Math.round(gamma(dimension+1))|0
  var result = []
  for(var i=0; i<dfactorial; ++i) {
    var p = perm.unrank(dimension, i)
    var cell = [ 0 ]
    var v = 0
    for(var j=0; j<p.length; ++j) {
      v += (1<<p[j])
      cell.push(v)
    }
    if(sgn(p) < 1) {
      cell[0] = v
      cell[dimension] = 0
    }
    result.push(cell)
  }
  return result
}
},{"gamma":101,"permutation-parity":466,"permutation-rank":467}],989:[function(require,module,exports){
'use strict'

module.exports = createTurntableController

var filterVector = require('filtered-vector')
var invert44     = require('gl-mat4/invert')
var rotateM      = require('gl-mat4/rotate')
var cross        = require('gl-vec3/cross')
var normalize3   = require('gl-vec3/normalize')
var dot3         = require('gl-vec3/dot')

function len3(x, y, z) {
  return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2) + Math.pow(z, 2))
}

function clamp1(x) {
  return Math.min(1.0, Math.max(-1.0, x))
}

function findOrthoPair(v) {
  var vx = Math.abs(v[0])
  var vy = Math.abs(v[1])
  var vz = Math.abs(v[2])

  var u = [0,0,0]
  if(vx > Math.max(vy, vz)) {
    u[2] = 1
  } else if(vy > Math.max(vx, vz)) {
    u[0] = 1
  } else {
    u[1] = 1
  }

  var vv = 0
  var uv = 0
  for(var i=0; i<3; ++i ) {
    vv += v[i] * v[i]
    uv += u[i] * v[i]
  }
  for(var i=0; i<3; ++i) {
    u[i] -= (uv / vv) *  v[i]
  }
  normalize3(u, u)
  return u
}

function TurntableController(zoomMin, zoomMax, center, up, right, radius, theta, phi) {
  this.center = filterVector(center)
  this.up     = filterVector(up)
  this.right  = filterVector(right)
  this.radius = filterVector([radius])
  this.angle  = filterVector([theta, phi])
  this.angle.bounds = [[-Infinity,-Math.PI/2], [Infinity,Math.PI/2]]
  this.setDistanceLimits(zoomMin, zoomMax)

  this.computedCenter = this.center.curve(0)
  this.computedUp     = this.up.curve(0)
  this.computedRight  = this.right.curve(0)
  this.computedRadius = this.radius.curve(0)
  this.computedAngle  = this.angle.curve(0)
  this.computedToward = [0,0,0]
  this.computedEye    = [0,0,0]
  this.computedMatrix = new Array(16)
  for(var i=0; i<16; ++i) {
    this.computedMatrix[i] = 0.5
  }

  this.recalcMatrix(0)
}

var proto = TurntableController.prototype

proto.setDistanceLimits = function(minDist, maxDist) {
  if(minDist > 0) {
    minDist = Math.log(minDist)
  } else {
    minDist = -Infinity
  }
  if(maxDist > 0) {
    maxDist = Math.log(maxDist)
  } else {
    maxDist = Infinity
  }
  maxDist = Math.max(maxDist, minDist)
  this.radius.bounds[0][0] = minDist
  this.radius.bounds[1][0] = maxDist
}

proto.getDistanceLimits = function(out) {
  var bounds = this.radius.bounds[0]
  if(out) {
    out[0] = Math.exp(bounds[0][0])
    out[1] = Math.exp(bounds[1][0])
    return out
  }
  return [ Math.exp(bounds[0][0]), Math.exp(bounds[1][0]) ]
}

proto.recalcMatrix = function(t) {
  //Recompute curves
  this.center.curve(t)
  this.up.curve(t)
  this.right.curve(t)
  this.radius.curve(t)
  this.angle.curve(t)

  //Compute frame for camera matrix
  var up     = this.computedUp
  var right  = this.computedRight
  var uu = 0.0
  var ur = 0.0
  for(var i=0; i<3; ++i) {
    ur += up[i] * right[i]
    uu += up[i] * up[i]
  }
  var ul = Math.sqrt(uu)
  var rr = 0.0
  for(var i=0; i<3; ++i) {
    right[i] -= up[i] * ur / uu
    rr       += right[i] * right[i]
    up[i]    /= ul
  }
  var rl = Math.sqrt(rr)
  for(var i=0; i<3; ++i) {
    right[i] /= rl
  }

  //Compute toward vector
  var toward = this.computedToward
  cross(toward, up, right)
  normalize3(toward, toward)

  //Compute angular parameters
  var radius = Math.exp(this.computedRadius[0])
  var theta  = this.computedAngle[0]
  var phi    = this.computedAngle[1]

  var ctheta = Math.cos(theta)
  var stheta = Math.sin(theta)
  var cphi   = Math.cos(phi)
  var sphi   = Math.sin(phi)

  var center = this.computedCenter

  var wx = ctheta * cphi 
  var wy = stheta * cphi
  var wz = sphi

  var sx = -ctheta * sphi
  var sy = -stheta * sphi
  var sz = cphi

  var eye = this.computedEye
  var mat = this.computedMatrix
  for(var i=0; i<3; ++i) {
    var x      = wx * right[i] + wy * toward[i] + wz * up[i]
    mat[4*i+1] = sx * right[i] + sy * toward[i] + sz * up[i]
    mat[4*i+2] = x
    mat[4*i+3] = 0.0
  }

  var ax = mat[1]
  var ay = mat[5]
  var az = mat[9]
  var bx = mat[2]
  var by = mat[6]
  var bz = mat[10]
  var cx = ay * bz - az * by
  var cy = az * bx - ax * bz
  var cz = ax * by - ay * bx
  var cl = len3(cx, cy, cz)
  cx /= cl
  cy /= cl
  cz /= cl
  mat[0] = cx
  mat[4] = cy
  mat[8] = cz

  for(var i=0; i<3; ++i) {
    eye[i] = center[i] + mat[2+4*i]*radius
  }

  for(var i=0; i<3; ++i) {
    var rr = 0.0
    for(var j=0; j<3; ++j) {
      rr += mat[i+4*j] * eye[j]
    }
    mat[12+i] = -rr
  }
  mat[15] = 1.0
}

proto.getMatrix = function(t, result) {
  this.recalcMatrix(t)
  var mat = this.computedMatrix
  if(result) {
    for(var i=0; i<16; ++i) {
      result[i] = mat[i]
    }
    return result
  }
  return mat
}

var zAxis = [0,0,0]
proto.rotate = function(t, dtheta, dphi, droll) {
  this.angle.move(t, dtheta, dphi)
  if(droll) {
    this.recalcMatrix(t)

    var mat = this.computedMatrix
    zAxis[0] = mat[2]
    zAxis[1] = mat[6]
    zAxis[2] = mat[10]

    var up     = this.computedUp
    var right  = this.computedRight
    var toward = this.computedToward

    for(var i=0; i<3; ++i) {
      mat[4*i]   = up[i]
      mat[4*i+1] = right[i]
      mat[4*i+2] = toward[i]
    }
    rotateM(mat, mat, droll, zAxis)
    for(var i=0; i<3; ++i) {
      up[i] =    mat[4*i]
      right[i] = mat[4*i+1]
    }

    this.up.set(t, up[0], up[1], up[2])
    this.right.set(t, right[0], right[1], right[2])
  }
}

proto.pan = function(t, dx, dy, dz) {
  dx = dx || 0.0
  dy = dy || 0.0
  dz = dz || 0.0

  this.recalcMatrix(t)
  var mat = this.computedMatrix

  var dist = Math.exp(this.computedRadius[0])

  var ux = mat[1]
  var uy = mat[5]
  var uz = mat[9]
  var ul = len3(ux, uy, uz)
  ux /= ul
  uy /= ul
  uz /= ul

  var rx = mat[0]
  var ry = mat[4]
  var rz = mat[8]
  var ru = rx * ux + ry * uy + rz * uz
  rx -= ux * ru
  ry -= uy * ru
  rz -= uz * ru
  var rl = len3(rx, ry, rz)
  rx /= rl
  ry /= rl
  rz /= rl

  var vx = rx * dx + ux * dy
  var vy = ry * dx + uy * dy
  var vz = rz * dx + uz * dy
  this.center.move(t, vx, vy, vz)

  //Update z-component of radius
  var radius = Math.exp(this.computedRadius[0])
  radius = Math.max(1e-4, radius + dz)
  this.radius.set(t, Math.log(radius))
}

proto.translate = function(t, dx, dy, dz) {
  this.center.move(t,
    dx||0.0,
    dy||0.0,
    dz||0.0)
}

//Recenters the coordinate axes
proto.setMatrix = function(t, mat, axes, noSnap) {
  
  //Get the axes for tare
  var ushift = 1
  if(typeof axes === 'number') {
    ushift = (axes)|0
  } 
  if(ushift < 0 || ushift > 3) {
    ushift = 1
  }
  var vshift = (ushift + 2) % 3
  var fshift = (ushift + 1) % 3

  //Recompute state for new t value
  if(!mat) { 
    this.recalcMatrix(t)
    mat = this.computedMatrix
  }

  //Get right and up vectors
  var ux = mat[ushift]
  var uy = mat[ushift+4]
  var uz = mat[ushift+8]
  if(!noSnap) {
    var ul = len3(ux, uy, uz)
    ux /= ul
    uy /= ul
    uz /= ul
  } else {
    var ax = Math.abs(ux)
    var ay = Math.abs(uy)
    var az = Math.abs(uz)
    var am = Math.max(ax,ay,az)
    if(ax === am) {
      ux = (ux < 0) ? -1 : 1
      uy = uz = 0
    } else if(az === am) {
      uz = (uz < 0) ? -1 : 1
      ux = uy = 0
    } else {
      uy = (uy < 0) ? -1 : 1
      ux = uz = 0
    }
  }

  var rx = mat[vshift]
  var ry = mat[vshift+4]
  var rz = mat[vshift+8]
  var ru = rx * ux + ry * uy + rz * uz
  rx -= ux * ru
  ry -= uy * ru
  rz -= uz * ru
  var rl = len3(rx, ry, rz)
  rx /= rl
  ry /= rl
  rz /= rl
  
  var fx = uy * rz - uz * ry
  var fy = uz * rx - ux * rz
  var fz = ux * ry - uy * rx
  var fl = len3(fx, fy, fz)
  fx /= fl
  fy /= fl
  fz /= fl

  this.center.jump(t, ex, ey, ez)
  this.radius.idle(t)
  this.up.jump(t, ux, uy, uz)
  this.right.jump(t, rx, ry, rz)

  var phi, theta
  if(ushift === 2) {
    var cx = mat[1]
    var cy = mat[5]
    var cz = mat[9]
    var cr = cx * rx + cy * ry + cz * rz
    var cf = cx * fx + cy * fy + cz * fz
    if(tu < 0) {
      phi = -Math.PI/2
    } else {
      phi = Math.PI/2
    }
    theta = Math.atan2(cf, cr)
  } else {
    var tx = mat[2]
    var ty = mat[6]
    var tz = mat[10]
    var tu = tx * ux + ty * uy + tz * uz
    var tr = tx * rx + ty * ry + tz * rz
    var tf = tx * fx + ty * fy + tz * fz

    phi = Math.asin(clamp1(tu))
    theta = Math.atan2(tf, tr)
  }

  this.angle.jump(t, theta, phi)

  this.recalcMatrix(t)
  var dx = mat[2]
  var dy = mat[6]
  var dz = mat[10]

  var imat = this.computedMatrix
  invert44(imat, mat)
  var w  = imat[15]
  var ex = imat[12] / w
  var ey = imat[13] / w
  var ez = imat[14] / w

  var gs = Math.exp(this.computedRadius[0])
  this.center.jump(t, ex-dx*gs, ey-dy*gs, ez-dz*gs)
}

proto.lastT = function() {
  return Math.max(
    this.center.lastT(),
    this.up.lastT(),
    this.right.lastT(),
    this.radius.lastT(),
    this.angle.lastT())
}

proto.idle = function(t) {
  this.center.idle(t)
  this.up.idle(t)
  this.right.idle(t)
  this.radius.idle(t)
  this.angle.idle(t)
}

proto.flush = function(t) {
  this.center.flush(t)
  this.up.flush(t)
  this.right.flush(t)
  this.radius.flush(t)
  this.angle.flush(t)
}

proto.setDistance = function(t, d) {
  if(d > 0) {
    this.radius.set(t, Math.log(d))
  }
}

proto.lookAt = function(t, eye, center, up) {
  this.recalcMatrix(t)

  eye    = eye    || this.computedEye
  center = center || this.computedCenter
  up     = up     || this.computedUp

  var ux = up[0]
  var uy = up[1]
  var uz = up[2]
  var ul = len3(ux, uy, uz)
  if(ul < 1e-6) {
    return
  }
  ux /= ul
  uy /= ul
  uz /= ul

  var tx = eye[0] - center[0]
  var ty = eye[1] - center[1]
  var tz = eye[2] - center[2]
  var tl = len3(tx, ty, tz)
  if(tl < 1e-6) {
    return
  }
  tx /= tl
  ty /= tl
  tz /= tl

  var right = this.computedRight
  var rx = right[0]
  var ry = right[1]
  var rz = right[2]
  var ru = ux*rx + uy*ry + uz*rz
  rx -= ru * ux
  ry -= ru * uy
  rz -= ru * uz
  var rl = len3(rx, ry, rz)

  if(rl < 0.01) {
    rx = uy * tz - uz * ty
    ry = uz * tx - ux * tz
    rz = ux * ty - uy * tx
    rl = len3(rx, ry, rz)
    if(rl < 1e-6) {
      return
    }
  }
  rx /= rl
  ry /= rl
  rz /= rl

  this.up.set(t, ux, uy, uz)
  this.right.set(t, rx, ry, rz)
  this.center.set(t, center[0], center[1], center[2])
  this.radius.set(t, Math.log(tl))

  var fx = uy * rz - uz * ry
  var fy = uz * rx - ux * rz
  var fz = ux * ry - uy * rx
  var fl = len3(fx, fy, fz)
  fx /= fl
  fy /= fl
  fz /= fl

  var tu = ux*tx + uy*ty + uz*tz
  var tr = rx*tx + ry*ty + rz*tz
  var tf = fx*tx + fy*ty + fz*tz

  var phi   = Math.asin(clamp1(tu))
  var theta = Math.atan2(tf, tr)

  var angleState = this.angle._state
  var lastTheta  = angleState[angleState.length-1]
  var lastPhi    = angleState[angleState.length-2]
  lastTheta      = lastTheta % (2.0 * Math.PI)
  var dp = Math.abs(lastTheta + 2.0 * Math.PI - theta)
  var d0 = Math.abs(lastTheta - theta)
  var dn = Math.abs(lastTheta - 2.0 * Math.PI - theta)
  if(dp < d0) {
    lastTheta += 2.0 * Math.PI
  }
  if(dn < d0) {
    lastTheta -= 2.0 * Math.PI
  }

  this.angle.jump(this.angle.lastT(), lastTheta, lastPhi)
  this.angle.set(t, theta, phi)
}

function createTurntableController(options) {
  options = options || {}

  var center = options.center || [0,0,0]
  var up     = options.up     || [0,1,0]
  var right  = options.right  || findOrthoPair(up)
  var radius = options.radius || 1.0
  var theta  = options.theta  || 0.0
  var phi    = options.phi    || 0.0

  center = [].slice.call(center, 0, 3)

  up = [].slice.call(up, 0, 3)
  normalize3(up, up)

  right = [].slice.call(right, 0, 3)
  normalize3(right, right)

  if('eye' in options) {
    var eye = options.eye
    var toward = [
      eye[0]-center[0],
      eye[1]-center[1],
      eye[2]-center[2]
    ]
    cross(right, toward, up)
    if(len3(right[0], right[1], right[2]) < 1e-6) {
      right = findOrthoPair(up)
    } else {
      normalize3(right, right)
    }

    radius = len3(toward[0], toward[1], toward[2])

    var ut = dot3(up, toward) / radius
    var rt = dot3(right, toward) / radius
    phi    = Math.acos(ut)
    theta  = Math.acos(rt)
  }

  //Use logarithmic coordinates for radius
  radius = Math.log(radius)

  //Return the controller
  return new TurntableController(
    options.zoomMin,
    options.zoomMax,
    center,
    up,
    right,
    radius,
    theta,
    phi)
}
},{"filtered-vector":99,"gl-mat4/invert":156,"gl-mat4/rotate":160,"gl-vec3/cross":244,"gl-vec3/dot":245,"gl-vec3/normalize":248}],990:[function(require,module,exports){
"use strict"

module.exports = twoProduct

var SPLITTER = +(Math.pow(2, 27) + 1.0)

function twoProduct(a, b, result) {
  var x = a * b

  var c = SPLITTER * a
  var abig = c - a
  var ahi = c - abig
  var alo = a - ahi

  var d = SPLITTER * b
  var bbig = d - b
  var bhi = d - bbig
  var blo = b - bhi

  var err1 = x - (ahi * bhi)
  var err2 = err1 - (alo * bhi)
  var err3 = err2 - (ahi * blo)

  var y = alo * blo - err3

  if(result) {
    result[0] = y
    result[1] = x
    return result
  }

  return [ y, x ]
}
},{}],991:[function(require,module,exports){
"use strict"

module.exports = fastTwoSum

function fastTwoSum(a, b, result) {
	var x = a + b
	var bv = x - a
	var av = x - bv
	var br = b - bv
	var ar = a - av
	if(result) {
		result[0] = ar + br
		result[1] = x
		return result
	}
	return [ar+br, x]
}
},{}],992:[function(require,module,exports){
(function (global,Buffer){
'use strict'

var bits = require('bit-twiddle')
var dup = require('dup')

//Legacy pool support
if(!global.__TYPEDARRAY_POOL) {
  global.__TYPEDARRAY_POOL = {
      UINT8   : dup([32, 0])
    , UINT16  : dup([32, 0])
    , UINT32  : dup([32, 0])
    , INT8    : dup([32, 0])
    , INT16   : dup([32, 0])
    , INT32   : dup([32, 0])
    , FLOAT   : dup([32, 0])
    , DOUBLE  : dup([32, 0])
    , DATA    : dup([32, 0])
    , UINT8C  : dup([32, 0])
    , BUFFER  : dup([32, 0])
  }
}

var hasUint8C = (typeof Uint8ClampedArray) !== 'undefined'
var POOL = global.__TYPEDARRAY_POOL

//Upgrade pool
if(!POOL.UINT8C) {
  POOL.UINT8C = dup([32, 0])
}
if(!POOL.BUFFER) {
  POOL.BUFFER = dup([32, 0])
}

//New technique: Only allocate from ArrayBufferView and Buffer
var DATA    = POOL.DATA
  , BUFFER  = POOL.BUFFER

exports.free = function free(array) {
  if(Buffer.isBuffer(array)) {
    BUFFER[bits.log2(array.length)].push(array)
  } else {
    if(Object.prototype.toString.call(array) !== '[object ArrayBuffer]') {
      array = array.buffer
    }
    if(!array) {
      return
    }
    var n = array.length || array.byteLength
    var log_n = bits.log2(n)|0
    DATA[log_n].push(array)
  }
}

function freeArrayBuffer(buffer) {
  if(!buffer) {
    return
  }
  var n = buffer.length || buffer.byteLength
  var log_n = bits.log2(n)
  DATA[log_n].push(buffer)
}

function freeTypedArray(array) {
  freeArrayBuffer(array.buffer)
}

exports.freeUint8 =
exports.freeUint16 =
exports.freeUint32 =
exports.freeInt8 =
exports.freeInt16 =
exports.freeInt32 =
exports.freeFloat32 = 
exports.freeFloat =
exports.freeFloat64 = 
exports.freeDouble = 
exports.freeUint8Clamped = 
exports.freeDataView = freeTypedArray

exports.freeArrayBuffer = freeArrayBuffer

exports.freeBuffer = function freeBuffer(array) {
  BUFFER[bits.log2(array.length)].push(array)
}

exports.malloc = function malloc(n, dtype) {
  if(dtype === undefined || dtype === 'arraybuffer') {
    return mallocArrayBuffer(n)
  } else {
    switch(dtype) {
      case 'uint8':
        return mallocUint8(n)
      case 'uint16':
        return mallocUint16(n)
      case 'uint32':
        return mallocUint32(n)
      case 'int8':
        return mallocInt8(n)
      case 'int16':
        return mallocInt16(n)
      case 'int32':
        return mallocInt32(n)
      case 'float':
      case 'float32':
        return mallocFloat(n)
      case 'double':
      case 'float64':
        return mallocDouble(n)
      case 'uint8_clamped':
        return mallocUint8Clamped(n)
      case 'buffer':
        return mallocBuffer(n)
      case 'data':
      case 'dataview':
        return mallocDataView(n)

      default:
        return null
    }
  }
  return null
}

function mallocArrayBuffer(n) {
  var n = bits.nextPow2(n)
  var log_n = bits.log2(n)
  var d = DATA[log_n]
  if(d.length > 0) {
    return d.pop()
  }
  return new ArrayBuffer(n)
}
exports.mallocArrayBuffer = mallocArrayBuffer

function mallocUint8(n) {
  return new Uint8Array(mallocArrayBuffer(n), 0, n)
}
exports.mallocUint8 = mallocUint8

function mallocUint16(n) {
  return new Uint16Array(mallocArrayBuffer(2*n), 0, n)
}
exports.mallocUint16 = mallocUint16

function mallocUint32(n) {
  return new Uint32Array(mallocArrayBuffer(4*n), 0, n)
}
exports.mallocUint32 = mallocUint32

function mallocInt8(n) {
  return new Int8Array(mallocArrayBuffer(n), 0, n)
}
exports.mallocInt8 = mallocInt8

function mallocInt16(n) {
  return new Int16Array(mallocArrayBuffer(2*n), 0, n)
}
exports.mallocInt16 = mallocInt16

function mallocInt32(n) {
  return new Int32Array(mallocArrayBuffer(4*n), 0, n)
}
exports.mallocInt32 = mallocInt32

function mallocFloat(n) {
  return new Float32Array(mallocArrayBuffer(4*n), 0, n)
}
exports.mallocFloat32 = exports.mallocFloat = mallocFloat

function mallocDouble(n) {
  return new Float64Array(mallocArrayBuffer(8*n), 0, n)
}
exports.mallocFloat64 = exports.mallocDouble = mallocDouble

function mallocUint8Clamped(n) {
  if(hasUint8C) {
    return new Uint8ClampedArray(mallocArrayBuffer(n), 0, n)
  } else {
    return mallocUint8(n)
  }
}
exports.mallocUint8Clamped = mallocUint8Clamped

function mallocDataView(n) {
  return new DataView(mallocArrayBuffer(n), 0, n)
}
exports.mallocDataView = mallocDataView

function mallocBuffer(n) {
  n = bits.nextPow2(n)
  var log_n = bits.log2(n)
  var cache = BUFFER[log_n]
  if(cache.length > 0) {
    return cache.pop()
  }
  return new Buffer(n)
}
exports.mallocBuffer = mallocBuffer

exports.clearCache = function clearCache() {
  for(var i=0; i<32; ++i) {
    POOL.UINT8[i].length = 0
    POOL.UINT16[i].length = 0
    POOL.UINT32[i].length = 0
    POOL.INT8[i].length = 0
    POOL.INT16[i].length = 0
    POOL.INT32[i].length = 0
    POOL.FLOAT[i].length = 0
    POOL.DOUBLE[i].length = 0
    POOL.UINT8C[i].length = 0
    DATA[i].length = 0
    BUFFER[i].length = 0
  }
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("buffer").Buffer)
},{"bit-twiddle":33,"buffer":46,"dup":90}],993:[function(require,module,exports){
"use strict"; "use restrict";

module.exports = UnionFind;

function UnionFind(count) {
  this.roots = new Array(count);
  this.ranks = new Array(count);
  
  for(var i=0; i<count; ++i) {
    this.roots[i] = i;
    this.ranks[i] = 0;
  }
}

var proto = UnionFind.prototype

Object.defineProperty(proto, "length", {
  "get": function() {
    return this.roots.length
  }
})

proto.makeSet = function() {
  var n = this.roots.length;
  this.roots.push(n);
  this.ranks.push(0);
  return n;
}

proto.find = function(x) {
  var x0 = x
  var roots = this.roots;
  while(roots[x] !== x) {
    x = roots[x]
  }
  while(roots[x0] !== x) {
    var y = roots[x0]
    roots[x0] = x
    x0 = y
  }
  return x;
}

proto.link = function(x, y) {
  var xr = this.find(x)
    , yr = this.find(y);
  if(xr === yr) {
    return;
  }
  var ranks = this.ranks
    , roots = this.roots
    , xd    = ranks[xr]
    , yd    = ranks[yr];
  if(xd < yd) {
    roots[xr] = yr;
  } else if(yd < xd) {
    roots[yr] = xr;
  } else {
    roots[yr] = xr;
    ++ranks[xr];
  }
}
},{}],994:[function(require,module,exports){
"use strict"

function unique_pred(list, compare) {
  var ptr = 1
    , len = list.length
    , a=list[0], b=list[0]
  for(var i=1; i<len; ++i) {
    b = a
    a = list[i]
    if(compare(a, b)) {
      if(i === ptr) {
        ptr++
        continue
      }
      list[ptr++] = a
    }
  }
  list.length = ptr
  return list
}

function unique_eq(list) {
  var ptr = 1
    , len = list.length
    , a=list[0], b = list[0]
  for(var i=1; i<len; ++i, b=a) {
    b = a
    a = list[i]
    if(a !== b) {
      if(i === ptr) {
        ptr++
        continue
      }
      list[ptr++] = a
    }
  }
  list.length = ptr
  return list
}

function unique(list, compare, sorted) {
  if(list.length === 0) {
    return list
  }
  if(compare) {
    if(!sorted) {
      list.sort(compare)
    }
    return unique_pred(list, compare)
  }
  if(!sorted) {
    list.sort()
  }
  return unique_eq(list)
}

module.exports = unique

},{}],995:[function(require,module,exports){
/*
 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Ported from Webkit
 * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
 */

module.exports = UnitBezier;

function UnitBezier(p1x, p1y, p2x, p2y) {
    // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
    this.cx = 3.0 * p1x;
    this.bx = 3.0 * (p2x - p1x) - this.cx;
    this.ax = 1.0 - this.cx - this.bx;

    this.cy = 3.0 * p1y;
    this.by = 3.0 * (p2y - p1y) - this.cy;
    this.ay = 1.0 - this.cy - this.by;

    this.p1x = p1x;
    this.p1y = p2y;
    this.p2x = p2x;
    this.p2y = p2y;
}

UnitBezier.prototype.sampleCurveX = function(t) {
    // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
    return ((this.ax * t + this.bx) * t + this.cx) * t;
};

UnitBezier.prototype.sampleCurveY = function(t) {
    return ((this.ay * t + this.by) * t + this.cy) * t;
};

UnitBezier.prototype.sampleCurveDerivativeX = function(t) {
    return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;
};

UnitBezier.prototype.solveCurveX = function(x, epsilon) {
    if (typeof epsilon === 'undefined') epsilon = 1e-6;

    var t0, t1, t2, x2, i;

    // First try a few iterations of Newton's method -- normally very fast.
    for (t2 = x, i = 0; i < 8; i++) {

        x2 = this.sampleCurveX(t2) - x;
        if (Math.abs(x2) < epsilon) return t2;

        var d2 = this.sampleCurveDerivativeX(t2);
        if (Math.abs(d2) < 1e-6) break;

        t2 = t2 - x2 / d2;
    }

    // Fall back to the bisection method for reliability.
    t0 = 0.0;
    t1 = 1.0;
    t2 = x;

    if (t2 < t0) return t0;
    if (t2 > t1) return t1;

    while (t0 < t1) {

        x2 = this.sampleCurveX(t2);
        if (Math.abs(x2 - x) < epsilon) return t2;

        if (x > x2) {
            t0 = t2;
        } else {
            t1 = t2;
        }

        t2 = (t1 - t0) * 0.5 + t0;
    }

    // Failure.
    return t2;
};

UnitBezier.prototype.solve = function(x, epsilon) {
    return this.sampleCurveY(this.solveCurveX(x, epsilon));
};

},{}],996:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';

var punycode = require('punycode');
var util = require('./util');

exports.parse = urlParse;
exports.resolve = urlResolve;
exports.resolveObject = urlResolveObject;
exports.format = urlFormat;

exports.Url = Url;

function Url() {
  this.protocol = null;
  this.slashes = null;
  this.auth = null;
  this.host = null;
  this.port = null;
  this.hostname = null;
  this.hash = null;
  this.search = null;
  this.query = null;
  this.pathname = null;
  this.path = null;
  this.href = null;
}

// Reference: RFC 3986, RFC 1808, RFC 2396

// define these here so at least they only have to be
// compiled once on the first module load.
var protocolPattern = /^([a-z0-9.+-]+:)/i,
    portPattern = /:[0-9]*$/,

    // Special case for a simple path URL
    simplePathPattern = /^(\/\/?(?!\/)[^\?\s]*)(\?[^\s]*)?$/,

    // RFC 2396: characters reserved for delimiting URLs.
    // We actually just auto-escape these.
    delims = ['<', '>', '"', '`', ' ', '\r', '\n', '\t'],

    // RFC 2396: characters not allowed for various reasons.
    unwise = ['{', '}', '|', '\\', '^', '`'].concat(delims),

    // Allowed by RFCs, but cause of XSS attacks.  Always escape these.
    autoEscape = ['\''].concat(unwise),
    // Characters that are never ever allowed in a hostname.
    // Note that any invalid chars are also handled, but these
    // are the ones that are *expected* to be seen, so we fast-path
    // them.
    nonHostChars = ['%', '/', '?', ';', '#'].concat(autoEscape),
    hostEndingChars = ['/', '?', '#'],
    hostnameMaxLen = 255,
    hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,
    hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,
    // protocols that can allow "unsafe" and "unwise" chars.
    unsafeProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that never have a hostname.
    hostlessProtocol = {
      'javascript': true,
      'javascript:': true
    },
    // protocols that always contain a // bit.
    slashedProtocol = {
      'http': true,
      'https': true,
      'ftp': true,
      'gopher': true,
      'file': true,
      'http:': true,
      'https:': true,
      'ftp:': true,
      'gopher:': true,
      'file:': true
    },
    querystring = require('querystring');

function urlParse(url, parseQueryString, slashesDenoteHost) {
  if (url && util.isObject(url) && url instanceof Url) return url;

  var u = new Url;
  u.parse(url, parseQueryString, slashesDenoteHost);
  return u;
}

Url.prototype.parse = function(url, parseQueryString, slashesDenoteHost) {
  if (!util.isString(url)) {
    throw new TypeError("Parameter 'url' must be a string, not " + typeof url);
  }

  // Copy chrome, IE, opera backslash-handling behavior.
  // Back slashes before the query string get converted to forward slashes
  // See: https://code.google.com/p/chromium/issues/detail?id=25916
  var queryIndex = url.indexOf('?'),
      splitter =
          (queryIndex !== -1 && queryIndex < url.indexOf('#')) ? '?' : '#',
      uSplit = url.split(splitter),
      slashRegex = /\\/g;
  uSplit[0] = uSplit[0].replace(slashRegex, '/');
  url = uSplit.join(splitter);

  var rest = url;

  // trim before proceeding.
  // This is to support parse stuff like "  http://foo.com  \n"
  rest = rest.trim();

  if (!slashesDenoteHost && url.split('#').length === 1) {
    // Try fast path regexp
    var simplePath = simplePathPattern.exec(rest);
    if (simplePath) {
      this.path = rest;
      this.href = rest;
      this.pathname = simplePath[1];
      if (simplePath[2]) {
        this.search = simplePath[2];
        if (parseQueryString) {
          this.query = querystring.parse(this.search.substr(1));
        } else {
          this.query = this.search.substr(1);
        }
      } else if (parseQueryString) {
        this.search = '';
        this.query = {};
      }
      return this;
    }
  }

  var proto = protocolPattern.exec(rest);
  if (proto) {
    proto = proto[0];
    var lowerProto = proto.toLowerCase();
    this.protocol = lowerProto;
    rest = rest.substr(proto.length);
  }

  // figure out if it's got a host
  // user@server is *always* interpreted as a hostname, and url
  // resolution will treat //foo/bar as host=foo,path=bar because that's
  // how the browser resolves relative URLs.
  if (slashesDenoteHost || proto || rest.match(/^\/\/[^@\/]+@[^@\/]+/)) {
    var slashes = rest.substr(0, 2) === '//';
    if (slashes && !(proto && hostlessProtocol[proto])) {
      rest = rest.substr(2);
      this.slashes = true;
    }
  }

  if (!hostlessProtocol[proto] &&
      (slashes || (proto && !slashedProtocol[proto]))) {

    // there's a hostname.
    // the first instance of /, ?, ;, or # ends the host.
    //
    // If there is an @ in the hostname, then non-host chars *are* allowed
    // to the left of the last @ sign, unless some host-ending character
    // comes *before* the @-sign.
    // URLs are obnoxious.
    //
    // ex:
    // http://a@b@c/ => user:a@b host:c
    // http://a@b?@c => user:a host:c path:/?@c

    // v0.12 TODO(isaacs): This is not quite how Chrome does things.
    // Review our test case against browsers more comprehensively.

    // find the first instance of any hostEndingChars
    var hostEnd = -1;
    for (var i = 0; i < hostEndingChars.length; i++) {
      var hec = rest.indexOf(hostEndingChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }

    // at this point, either we have an explicit point where the
    // auth portion cannot go past, or the last @ char is the decider.
    var auth, atSign;
    if (hostEnd === -1) {
      // atSign can be anywhere.
      atSign = rest.lastIndexOf('@');
    } else {
      // atSign must be in auth portion.
      // http://a@b/c@d => host:b auth:a path:/c@d
      atSign = rest.lastIndexOf('@', hostEnd);
    }

    // Now we have a portion which is definitely the auth.
    // Pull that off.
    if (atSign !== -1) {
      auth = rest.slice(0, atSign);
      rest = rest.slice(atSign + 1);
      this.auth = decodeURIComponent(auth);
    }

    // the host is the remaining to the left of the first non-host char
    hostEnd = -1;
    for (var i = 0; i < nonHostChars.length; i++) {
      var hec = rest.indexOf(nonHostChars[i]);
      if (hec !== -1 && (hostEnd === -1 || hec < hostEnd))
        hostEnd = hec;
    }
    // if we still have not hit it, then the entire thing is a host.
    if (hostEnd === -1)
      hostEnd = rest.length;

    this.host = rest.slice(0, hostEnd);
    rest = rest.slice(hostEnd);

    // pull out port.
    this.parseHost();

    // we've indicated that there is a hostname,
    // so even if it's empty, it has to be present.
    this.hostname = this.hostname || '';

    // if hostname begins with [ and ends with ]
    // assume that it's an IPv6 address.
    var ipv6Hostname = this.hostname[0] === '[' &&
        this.hostname[this.hostname.length - 1] === ']';

    // validate a little.
    if (!ipv6Hostname) {
      var hostparts = this.hostname.split(/\./);
      for (var i = 0, l = hostparts.length; i < l; i++) {
        var part = hostparts[i];
        if (!part) continue;
        if (!part.match(hostnamePartPattern)) {
          var newpart = '';
          for (var j = 0, k = part.length; j < k; j++) {
            if (part.charCodeAt(j) > 127) {
              // we replace non-ASCII char with a temporary placeholder
              // we need this to make sure size of hostname is not
              // broken by replacing non-ASCII by nothing
              newpart += 'x';
            } else {
              newpart += part[j];
            }
          }
          // we test again with ASCII char only
          if (!newpart.match(hostnamePartPattern)) {
            var validParts = hostparts.slice(0, i);
            var notHost = hostparts.slice(i + 1);
            var bit = part.match(hostnamePartStart);
            if (bit) {
              validParts.push(bit[1]);
              notHost.unshift(bit[2]);
            }
            if (notHost.length) {
              rest = '/' + notHost.join('.') + rest;
            }
            this.hostname = validParts.join('.');
            break;
          }
        }
      }
    }

    if (this.hostname.length > hostnameMaxLen) {
      this.hostname = '';
    } else {
      // hostnames are always lower case.
      this.hostname = this.hostname.toLowerCase();
    }

    if (!ipv6Hostname) {
      // IDNA Support: Returns a punycoded representation of "domain".
      // It only converts parts of the domain name that
      // have non-ASCII characters, i.e. it doesn't matter if
      // you call it with a domain that already is ASCII-only.
      this.hostname = punycode.toASCII(this.hostname);
    }

    var p = this.port ? ':' + this.port : '';
    var h = this.hostname || '';
    this.host = h + p;
    this.href += this.host;

    // strip [ and ] from the hostname
    // the host field still retains them, though
    if (ipv6Hostname) {
      this.hostname = this.hostname.substr(1, this.hostname.length - 2);
      if (rest[0] !== '/') {
        rest = '/' + rest;
      }
    }
  }

  // now rest is set to the post-host stuff.
  // chop off any delim chars.
  if (!unsafeProtocol[lowerProto]) {

    // First, make 100% sure that any "autoEscape" chars get
    // escaped, even if encodeURIComponent doesn't think they
    // need to be.
    for (var i = 0, l = autoEscape.length; i < l; i++) {
      var ae = autoEscape[i];
      if (rest.indexOf(ae) === -1)
        continue;
      var esc = encodeURIComponent(ae);
      if (esc === ae) {
        esc = escape(ae);
      }
      rest = rest.split(ae).join(esc);
    }
  }


  // chop off from the tail first.
  var hash = rest.indexOf('#');
  if (hash !== -1) {
    // got a fragment string.
    this.hash = rest.substr(hash);
    rest = rest.slice(0, hash);
  }
  var qm = rest.indexOf('?');
  if (qm !== -1) {
    this.search = rest.substr(qm);
    this.query = rest.substr(qm + 1);
    if (parseQueryString) {
      this.query = querystring.parse(this.query);
    }
    rest = rest.slice(0, qm);
  } else if (parseQueryString) {
    // no query string, but parseQueryString still requested
    this.search = '';
    this.query = {};
  }
  if (rest) this.pathname = rest;
  if (slashedProtocol[lowerProto] &&
      this.hostname && !this.pathname) {
    this.pathname = '/';
  }

  //to support http.request
  if (this.pathname || this.search) {
    var p = this.pathname || '';
    var s = this.search || '';
    this.path = p + s;
  }

  // finally, reconstruct the href based on what has been validated.
  this.href = this.format();
  return this;
};

// format a parsed object into a url string
function urlFormat(obj) {
  // ensure it's an object, and not a string url.
  // If it's an obj, this is a no-op.
  // this way, you can call url_format() on strings
  // to clean up potentially wonky urls.
  if (util.isString(obj)) obj = urlParse(obj);
  if (!(obj instanceof Url)) return Url.prototype.format.call(obj);
  return obj.format();
}

Url.prototype.format = function() {
  var auth = this.auth || '';
  if (auth) {
    auth = encodeURIComponent(auth);
    auth = auth.replace(/%3A/i, ':');
    auth += '@';
  }

  var protocol = this.protocol || '',
      pathname = this.pathname || '',
      hash = this.hash || '',
      host = false,
      query = '';

  if (this.host) {
    host = auth + this.host;
  } else if (this.hostname) {
    host = auth + (this.hostname.indexOf(':') === -1 ?
        this.hostname :
        '[' + this.hostname + ']');
    if (this.port) {
      host += ':' + this.port;
    }
  }

  if (this.query &&
      util.isObject(this.query) &&
      Object.keys(this.query).length) {
    query = querystring.stringify(this.query);
  }

  var search = this.search || (query && ('?' + query)) || '';

  if (protocol && protocol.substr(-1) !== ':') protocol += ':';

  // only the slashedProtocols get the //.  Not mailto:, xmpp:, etc.
  // unless they had them to begin with.
  if (this.slashes ||
      (!protocol || slashedProtocol[protocol]) && host !== false) {
    host = '//' + (host || '');
    if (pathname && pathname.charAt(0) !== '/') pathname = '/' + pathname;
  } else if (!host) {
    host = '';
  }

  if (hash && hash.charAt(0) !== '#') hash = '#' + hash;
  if (search && search.charAt(0) !== '?') search = '?' + search;

  pathname = pathname.replace(/[?#]/g, function(match) {
    return encodeURIComponent(match);
  });
  search = search.replace('#', '%23');

  return protocol + host + pathname + search + hash;
};

function urlResolve(source, relative) {
  return urlParse(source, false, true).resolve(relative);
}

Url.prototype.resolve = function(relative) {
  return this.resolveObject(urlParse(relative, false, true)).format();
};

function urlResolveObject(source, relative) {
  if (!source) return relative;
  return urlParse(source, false, true).resolveObject(relative);
}

Url.prototype.resolveObject = function(relative) {
  if (util.isString(relative)) {
    var rel = new Url();
    rel.parse(relative, false, true);
    relative = rel;
  }

  var result = new Url();
  var tkeys = Object.keys(this);
  for (var tk = 0; tk < tkeys.length; tk++) {
    var tkey = tkeys[tk];
    result[tkey] = this[tkey];
  }

  // hash is always overridden, no matter what.
  // even href="" will remove it.
  result.hash = relative.hash;

  // if the relative url is empty, then there's nothing left to do here.
  if (relative.href === '') {
    result.href = result.format();
    return result;
  }

  // hrefs like //foo/bar always cut to the protocol.
  if (relative.slashes && !relative.protocol) {
    // take everything except the protocol from relative
    var rkeys = Object.keys(relative);
    for (var rk = 0; rk < rkeys.length; rk++) {
      var rkey = rkeys[rk];
      if (rkey !== 'protocol')
        result[rkey] = relative[rkey];
    }

    //urlParse appends trailing / to urls like http://www.example.com
    if (slashedProtocol[result.protocol] &&
        result.hostname && !result.pathname) {
      result.path = result.pathname = '/';
    }

    result.href = result.format();
    return result;
  }

  if (relative.protocol && relative.protocol !== result.protocol) {
    // if it's a known url protocol, then changing
    // the protocol does weird things
    // first, if it's not file:, then we MUST have a host,
    // and if there was a path
    // to begin with, then we MUST have a path.
    // if it is file:, then the host is dropped,
    // because that's known to be hostless.
    // anything else is assumed to be absolute.
    if (!slashedProtocol[relative.protocol]) {
      var keys = Object.keys(relative);
      for (var v = 0; v < keys.length; v++) {
        var k = keys[v];
        result[k] = relative[k];
      }
      result.href = result.format();
      return result;
    }

    result.protocol = relative.protocol;
    if (!relative.host && !hostlessProtocol[relative.protocol]) {
      var relPath = (relative.pathname || '').split('/');
      while (relPath.length && !(relative.host = relPath.shift()));
      if (!relative.host) relative.host = '';
      if (!relative.hostname) relative.hostname = '';
      if (relPath[0] !== '') relPath.unshift('');
      if (relPath.length < 2) relPath.unshift('');
      result.pathname = relPath.join('/');
    } else {
      result.pathname = relative.pathname;
    }
    result.search = relative.search;
    result.query = relative.query;
    result.host = relative.host || '';
    result.auth = relative.auth;
    result.hostname = relative.hostname || relative.host;
    result.port = relative.port;
    // to support http.request
    if (result.pathname || result.search) {
      var p = result.pathname || '';
      var s = result.search || '';
      result.path = p + s;
    }
    result.slashes = result.slashes || relative.slashes;
    result.href = result.format();
    return result;
  }

  var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/'),
      isRelAbs = (
          relative.host ||
          relative.pathname && relative.pathname.charAt(0) === '/'
      ),
      mustEndAbs = (isRelAbs || isSourceAbs ||
                    (result.host && relative.pathname)),
      removeAllDots = mustEndAbs,
      srcPath = result.pathname && result.pathname.split('/') || [],
      relPath = relative.pathname && relative.pathname.split('/') || [],
      psychotic = result.protocol && !slashedProtocol[result.protocol];

  // if the url is a non-slashed url, then relative
  // links like ../.. should be able
  // to crawl up to the hostname, as well.  This is strange.
  // result.protocol has already been set by now.
  // Later on, put the first path part into the host field.
  if (psychotic) {
    result.hostname = '';
    result.port = null;
    if (result.host) {
      if (srcPath[0] === '') srcPath[0] = result.host;
      else srcPath.unshift(result.host);
    }
    result.host = '';
    if (relative.protocol) {
      relative.hostname = null;
      relative.port = null;
      if (relative.host) {
        if (relPath[0] === '') relPath[0] = relative.host;
        else relPath.unshift(relative.host);
      }
      relative.host = null;
    }
    mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
  }

  if (isRelAbs) {
    // it's absolute.
    result.host = (relative.host || relative.host === '') ?
                  relative.host : result.host;
    result.hostname = (relative.hostname || relative.hostname === '') ?
                      relative.hostname : result.hostname;
    result.search = relative.search;
    result.query = relative.query;
    srcPath = relPath;
    // fall through to the dot-handling below.
  } else if (relPath.length) {
    // it's relative
    // throw away the existing file, and take the new path instead.
    if (!srcPath) srcPath = [];
    srcPath.pop();
    srcPath = srcPath.concat(relPath);
    result.search = relative.search;
    result.query = relative.query;
  } else if (!util.isNullOrUndefined(relative.search)) {
    // just pull out the search.
    // like href='?foo'.
    // Put this after the other two cases because it simplifies the booleans
    if (psychotic) {
      result.hostname = result.host = srcPath.shift();
      //occationaly the auth can get stuck only in host
      //this especially happens in cases like
      //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
      var authInHost = result.host && result.host.indexOf('@') > 0 ?
                       result.host.split('@') : false;
      if (authInHost) {
        result.auth = authInHost.shift();
        result.host = result.hostname = authInHost.shift();
      }
    }
    result.search = relative.search;
    result.query = relative.query;
    //to support http.request
    if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
      result.path = (result.pathname ? result.pathname : '') +
                    (result.search ? result.search : '');
    }
    result.href = result.format();
    return result;
  }

  if (!srcPath.length) {
    // no path at all.  easy.
    // we've already handled the other stuff above.
    result.pathname = null;
    //to support http.request
    if (result.search) {
      result.path = '/' + result.search;
    } else {
      result.path = null;
    }
    result.href = result.format();
    return result;
  }

  // if a url ENDs in . or .., then it must get a trailing slash.
  // however, if it ends in anything else non-slashy,
  // then it must NOT get a trailing slash.
  var last = srcPath.slice(-1)[0];
  var hasTrailingSlash = (
      (result.host || relative.host || srcPath.length > 1) &&
      (last === '.' || last === '..') || last === '');

  // strip single dots, resolve double dots to parent dir
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = srcPath.length; i >= 0; i--) {
    last = srcPath[i];
    if (last === '.') {
      srcPath.splice(i, 1);
    } else if (last === '..') {
      srcPath.splice(i, 1);
      up++;
    } else if (up) {
      srcPath.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (!mustEndAbs && !removeAllDots) {
    for (; up--; up) {
      srcPath.unshift('..');
    }
  }

  if (mustEndAbs && srcPath[0] !== '' &&
      (!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
    srcPath.unshift('');
  }

  if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
    srcPath.push('');
  }

  var isAbsolute = srcPath[0] === '' ||
      (srcPath[0] && srcPath[0].charAt(0) === '/');

  // put the host back
  if (psychotic) {
    result.hostname = result.host = isAbsolute ? '' :
                                    srcPath.length ? srcPath.shift() : '';
    //occationaly the auth can get stuck only in host
    //this especially happens in cases like
    //url.resolveObject('mailto:local1@domain1', 'local2@domain2')
    var authInHost = result.host && result.host.indexOf('@') > 0 ?
                     result.host.split('@') : false;
    if (authInHost) {
      result.auth = authInHost.shift();
      result.host = result.hostname = authInHost.shift();
    }
  }

  mustEndAbs = mustEndAbs || (result.host && srcPath.length);

  if (mustEndAbs && !isAbsolute) {
    srcPath.unshift('');
  }

  if (!srcPath.length) {
    result.pathname = null;
    result.path = null;
  } else {
    result.pathname = srcPath.join('/');
  }

  //to support request.http
  if (!util.isNull(result.pathname) || !util.isNull(result.search)) {
    result.path = (result.pathname ? result.pathname : '') +
                  (result.search ? result.search : '');
  }
  result.auth = relative.auth || result.auth;
  result.slashes = result.slashes || relative.slashes;
  result.href = result.format();
  return result;
};

Url.prototype.parseHost = function() {
  var host = this.host;
  var port = portPattern.exec(host);
  if (port) {
    port = port[0];
    if (port !== ':') {
      this.port = port.substr(1);
    }
    host = host.substr(0, host.length - port.length);
  }
  if (host) this.hostname = host;
};

},{"./util":997,"punycode":924,"querystring":928}],997:[function(require,module,exports){
'use strict';

module.exports = {
  isString: function(arg) {
    return typeof(arg) === 'string';
  },
  isObject: function(arg) {
    return typeof(arg) === 'object' && arg !== null;
  },
  isNull: function(arg) {
    return arg === null;
  },
  isNullOrUndefined: function(arg) {
    return arg == null;
  }
};

},{}],998:[function(require,module,exports){
(function (global){

/**
 * Module exports.
 */

module.exports = deprecate;

/**
 * Mark that a method should not be used.
 * Returns a modified function which warns once by default.
 *
 * If `localStorage.noDeprecation = true` is set, then it is a no-op.
 *
 * If `localStorage.throwDeprecation = true` is set, then deprecated functions
 * will throw an Error when invoked.
 *
 * If `localStorage.traceDeprecation = true` is set, then deprecated functions
 * will invoke `console.trace()` instead of `console.error()`.
 *
 * @param {Function} fn - the function to deprecate
 * @param {String} msg - the string to print to the console when `fn` is invoked
 * @returns {Function} a new "deprecated" version of `fn`
 * @api public
 */

function deprecate (fn, msg) {
  if (config('noDeprecation')) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (config('throwDeprecation')) {
        throw new Error(msg);
      } else if (config('traceDeprecation')) {
        console.trace(msg);
      } else {
        console.warn(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
}

/**
 * Checks `localStorage` for boolean values for the given `name`.
 *
 * @param {String} name
 * @returns {Boolean}
 * @api private
 */

function config (name) {
  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
  try {
    if (!global.localStorage) return false;
  } catch (_) {
    return false;
  }
  var val = global.localStorage[name];
  if (null == val) return false;
  return String(val).toLowerCase() === 'true';
}

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],999:[function(require,module,exports){
arguments[4][266][0].apply(exports,arguments)
},{"dup":266}],1000:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],1001:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":1000,"_process":923,"inherits":999}],1002:[function(require,module,exports){
module.exports.VectorTile = require('./lib/vectortile.js');
module.exports.VectorTileFeature = require('./lib/vectortilefeature.js');
module.exports.VectorTileLayer = require('./lib/vectortilelayer.js');

},{"./lib/vectortile.js":1003,"./lib/vectortilefeature.js":1004,"./lib/vectortilelayer.js":1005}],1003:[function(require,module,exports){
'use strict';

var VectorTileLayer = require('./vectortilelayer');

module.exports = VectorTile;

function VectorTile(pbf, end) {
    this.layers = pbf.readFields(readTile, {}, end);
}

function readTile(tag, layers, pbf) {
    if (tag === 3) {
        var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
        if (layer.length) layers[layer.name] = layer;
    }
}


},{"./vectortilelayer":1005}],1004:[function(require,module,exports){
'use strict';

var Point = require('point-geometry');

module.exports = VectorTileFeature;

function VectorTileFeature(pbf, end, extent, keys, values) {
    // Public
    this.properties = {};
    this.extent = extent;
    this.type = 0;

    // Private
    this._pbf = pbf;
    this._geometry = -1;
    this._keys = keys;
    this._values = values;

    pbf.readFields(readFeature, this, end);
}

function readFeature(tag, feature, pbf) {
    if (tag == 1) feature.id = pbf.readVarint();
    else if (tag == 2) readTag(pbf, feature);
    else if (tag == 3) feature.type = pbf.readVarint();
    else if (tag == 4) feature._geometry = pbf.pos;
}

function readTag(pbf, feature) {
    var end = pbf.readVarint() + pbf.pos;

    while (pbf.pos < end) {
        var key = feature._keys[pbf.readVarint()],
            value = feature._values[pbf.readVarint()];
        feature.properties[key] = value;
    }
}

VectorTileFeature.types = ['Unknown', 'Point', 'LineString', 'Polygon'];

VectorTileFeature.prototype.loadGeometry = function() {
    var pbf = this._pbf;
    pbf.pos = this._geometry;

    var end = pbf.readVarint() + pbf.pos,
        cmd = 1,
        length = 0,
        x = 0,
        y = 0,
        lines = [],
        line;

    while (pbf.pos < end) {
        if (!length) {
            var cmdLen = pbf.readVarint();
            cmd = cmdLen & 0x7;
            length = cmdLen >> 3;
        }

        length--;

        if (cmd === 1 || cmd === 2) {
            x += pbf.readSVarint();
            y += pbf.readSVarint();

            if (cmd === 1) { // moveTo
                if (line) lines.push(line);
                line = [];
            }

            line.push(new Point(x, y));

        } else if (cmd === 7) {

            // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
            if (line) {
                line.push(line[0].clone()); // closePolygon
            }

        } else {
            throw new Error('unknown command ' + cmd);
        }
    }

    if (line) lines.push(line);

    return lines;
};

VectorTileFeature.prototype.bbox = function() {
    var pbf = this._pbf;
    pbf.pos = this._geometry;

    var end = pbf.readVarint() + pbf.pos,
        cmd = 1,
        length = 0,
        x = 0,
        y = 0,
        x1 = Infinity,
        x2 = -Infinity,
        y1 = Infinity,
        y2 = -Infinity;

    while (pbf.pos < end) {
        if (!length) {
            var cmdLen = pbf.readVarint();
            cmd = cmdLen & 0x7;
            length = cmdLen >> 3;
        }

        length--;

        if (cmd === 1 || cmd === 2) {
            x += pbf.readSVarint();
            y += pbf.readSVarint();
            if (x < x1) x1 = x;
            if (x > x2) x2 = x;
            if (y < y1) y1 = y;
            if (y > y2) y2 = y;

        } else if (cmd !== 7) {
            throw new Error('unknown command ' + cmd);
        }
    }

    return [x1, y1, x2, y2];
};

VectorTileFeature.prototype.toGeoJSON = function(x, y, z) {
    var size = this.extent * Math.pow(2, z),
        x0 = this.extent * x,
        y0 = this.extent * y,
        coords = this.loadGeometry(),
        type = VectorTileFeature.types[this.type],
        i, j;

    function project(line) {
        for (var j = 0; j < line.length; j++) {
            var p = line[j], y2 = 180 - (p.y + y0) * 360 / size;
            line[j] = [
                (p.x + x0) * 360 / size - 180,
                360 / Math.PI * Math.atan(Math.exp(y2 * Math.PI / 180)) - 90
            ];
        }
    }

    switch (this.type) {
    case 1:
        var points = [];
        for (i = 0; i < coords.length; i++) {
            points[i] = coords[i][0];
        }
        coords = points;
        project(coords);
        break;

    case 2:
        for (i = 0; i < coords.length; i++) {
            project(coords[i]);
        }
        break;

    case 3:
        coords = classifyRings(coords);
        for (i = 0; i < coords.length; i++) {
            for (j = 0; j < coords[i].length; j++) {
                project(coords[i][j]);
            }
        }
        break;
    }

    if (coords.length === 1) {
        coords = coords[0];
    } else {
        type = 'Multi' + type;
    }

    var result = {
        type: "Feature",
        geometry: {
            type: type,
            coordinates: coords
        },
        properties: this.properties
    };

    if ('id' in this) {
        result.id = this.id;
    }

    return result;
};

// classifies an array of rings into polygons with outer rings and holes

function classifyRings(rings) {
    var len = rings.length;

    if (len <= 1) return [rings];

    var polygons = [],
        polygon,
        ccw;

    for (var i = 0; i < len; i++) {
        var area = signedArea(rings[i]);
        if (area === 0) continue;

        if (ccw === undefined) ccw = area < 0;

        if (ccw === area < 0) {
            if (polygon) polygons.push(polygon);
            polygon = [rings[i]];

        } else {
            polygon.push(rings[i]);
        }
    }
    if (polygon) polygons.push(polygon);

    return polygons;
}

function signedArea(ring) {
    var sum = 0;
    for (var i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {
        p1 = ring[i];
        p2 = ring[j];
        sum += (p2.x - p1.x) * (p1.y + p2.y);
    }
    return sum;
}

},{"point-geometry":919}],1005:[function(require,module,exports){
'use strict';

var VectorTileFeature = require('./vectortilefeature.js');

module.exports = VectorTileLayer;

function VectorTileLayer(pbf, end) {
    // Public
    this.version = 1;
    this.name = null;
    this.extent = 4096;
    this.length = 0;

    // Private
    this._pbf = pbf;
    this._keys = [];
    this._values = [];
    this._features = [];

    pbf.readFields(readLayer, this, end);

    this.length = this._features.length;
}

function readLayer(tag, layer, pbf) {
    if (tag === 15) layer.version = pbf.readVarint();
    else if (tag === 1) layer.name = pbf.readString();
    else if (tag === 5) layer.extent = pbf.readVarint();
    else if (tag === 2) layer._features.push(pbf.pos);
    else if (tag === 3) layer._keys.push(pbf.readString());
    else if (tag === 4) layer._values.push(readValueMessage(pbf));
}

function readValueMessage(pbf) {
    var value = null,
        end = pbf.readVarint() + pbf.pos;

    while (pbf.pos < end) {
        var tag = pbf.readVarint() >> 3;

        value = tag === 1 ? pbf.readString() :
            tag === 2 ? pbf.readFloat() :
            tag === 3 ? pbf.readDouble() :
            tag === 4 ? pbf.readVarint64() :
            tag === 5 ? pbf.readVarint() :
            tag === 6 ? pbf.readSVarint() :
            tag === 7 ? pbf.readBoolean() : null;
    }

    return value;
}

// return feature `i` from this layer as a `VectorTileFeature`
VectorTileLayer.prototype.feature = function(i) {
    if (i < 0 || i >= this._features.length) throw new Error('feature index out of bounds');

    this._pbf.pos = this._features[i];

    var end = this._pbf.readVarint() + this._pbf.pos;
    return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
};

},{"./vectortilefeature.js":1004}],1006:[function(require,module,exports){
"use strict"

module.exports = createText

var vectorizeText = require("./lib/vtext")
var defaultCanvas = null
var defaultContext = null

if(typeof document !== 'undefined') {
  defaultCanvas = document.createElement('canvas')
  defaultCanvas.width = 8192
  defaultCanvas.height = 1024
  defaultContext = defaultCanvas.getContext("2d")
}

function createText(str, options) {
  if((typeof options !== "object") || (options === null)) {
    options = {}
  }
  return vectorizeText(
    str,
    options.canvas || defaultCanvas,
    options.context || defaultContext,
    options)
}

},{"./lib/vtext":1007}],1007:[function(require,module,exports){
"use strict"

module.exports = vectorizeText
module.exports.processPixels = processPixels

var surfaceNets = require('surface-nets')
var ndarray = require('ndarray')
var simplify = require('simplify-planar-graph')
var cleanPSLG = require('clean-pslg')
var cdt2d = require('cdt2d')
var toPolygonCrappy = require('planar-graph-to-polyline')

function transformPositions(positions, options, size) {
  var align = options.textAlign || "start"
  var baseline = options.textBaseline || "alphabetic"

  var lo = [1<<30, 1<<30]
  var hi = [0,0]
  var n = positions.length
  for(var i=0; i<n; ++i) {
    var p = positions[i]
    for(var j=0; j<2; ++j) {
      lo[j] = Math.min(lo[j], p[j])|0
      hi[j] = Math.max(hi[j], p[j])|0
    }
  }

  var xShift = 0
  switch(align) {
    case "center":
      xShift = -0.5 * (lo[0] + hi[0])
    break

    case "right":
    case "end":
      xShift = -hi[0]
    break

    case "left":
    case "start":
      xShift = -lo[0]
    break

    default:
      throw new Error("vectorize-text: Unrecognized textAlign: '" + align + "'")
  }

  var yShift = 0
  switch(baseline) {
    case "hanging":
    case "top":
      yShift = -lo[1]
    break

    case "middle":
      yShift = -0.5 * (lo[1] + hi[1])
    break

    case "alphabetic":
    case "ideographic":
      yShift = -3 * size
    break

    case "bottom":
      yShift = -hi[1]
    break

    default:
      throw new Error("vectorize-text: Unrecoginized textBaseline: '" + baseline + "'")
  }

  var scale = 1.0 / size
  if("lineHeight" in options) {
    scale *= +options.lineHeight
  } else if("width" in options) {
    scale = options.width / (hi[0] - lo[0])
  } else if("height" in options) {
    scale = options.height / (hi[1] - lo[1])
  }

  return positions.map(function(p) {
    return [ scale * (p[0] + xShift), scale * (p[1] + yShift) ]
  })
}

function getPixels(canvas, context, str, size) {
  var width = Math.ceil(context.measureText(str).width + 2*size)|0
  if(width > 8192) {
    throw new Error("vectorize-text: String too long (sorry, this will get fixed later)")
  }
  var height = 3 * size
  if(canvas.height < height) {
    canvas.height = height
  }

  context.fillStyle = "#000"
  context.fillRect(0, 0, canvas.width, canvas.height)

  context.fillStyle = "#fff"
  context.fillText(str, size, 2*size)

  //Cut pixels from image
  var pixelData = context.getImageData(0, 0, width, height)
  var pixels = ndarray(pixelData.data, [height, width, 4])

  return pixels.pick(-1,-1,0).transpose(1,0)
}

function getContour(pixels, doSimplify) {
  var contour = surfaceNets(pixels, 128)
  if(doSimplify) {
    return simplify(contour.cells, contour.positions, 0.25)
  }
  return {
    edges: contour.cells,
    positions: contour.positions
  }
}

function processPixelsImpl(pixels, options, size, simplify) {
  //Extract contour
  var contour = getContour(pixels, simplify)

  //Apply warp to positions
  var positions = transformPositions(contour.positions, options, size)
  var edges     = contour.edges
  var flip = "ccw" === options.orientation

  //Clean up the PSLG, resolve self intersections, etc.
  cleanPSLG(positions, edges)

  //If triangulate flag passed, triangulate the result
  if(options.polygons || options.polygon || options.polyline) {
    var result = toPolygonCrappy(edges, positions)
    var nresult = new Array(result.length)
    for(var i=0; i<result.length; ++i) {
      var loops = result[i]
      var nloops = new Array(loops.length)
      for(var j=0; j<loops.length; ++j) {
        var loop = loops[j]
        var nloop = new Array(loop.length)
        for(var k=0; k<loop.length; ++k) {
          nloop[k] = positions[loop[k]].slice()
        }
        if(flip) {
          nloop.reverse()
        }
        nloops[j] = nloop
      }
      nresult[i] = nloops
    }
    return nresult
  } else if(options.triangles || options.triangulate || options.triangle) {
    return {
      cells: cdt2d(positions, edges, {
        delaunay: false,
        exterior: false,
        interior: true
      }),
      positions: positions
    }
  } else {
    return {
      edges:     edges,
      positions: positions
    }
  }
}

function processPixels(pixels, options, size) {
  try {
    return processPixelsImpl(pixels, options, size, true)
  } catch(e) {}
  try {
    return processPixelsImpl(pixels, options, size, false)
  } catch(e) {}
  if(options.polygons || options.polyline || options.polygon) {
    return []
  }
  if(options.triangles || options.triangulate || options.triangle) {
    return {
      cells: [],
      positions: []
    }
  }
  return {
    edges: [],
    positions: []
  }
}

function vectorizeText(str, canvas, context, options) {
  var size = options.size || 64
  var family = options.font || "normal"

  context.font = size + "px " + family
  context.textAlign = "start"
  context.textBaseline = "alphabetic"
  context.direction = "ltr"

  var pixels = getPixels(canvas, context, str, size)

  return processPixels(pixels, options, size)
}

},{"cdt2d":49,"clean-pslg":58,"ndarray":443,"planar-graph-to-polyline":470,"simplify-planar-graph":973,"surface-nets":982}],1008:[function(require,module,exports){
var Pbf = require('pbf')
var vtpb = require('./vector-tile-pb')
var GeoJSONWrapper = require('./lib/geojson_wrapper')

module.exports = fromVectorTileJs
module.exports.fromVectorTileJs = fromVectorTileJs
module.exports.fromGeojsonVt = fromGeojsonVt
module.exports.GeoJSONWrapper = GeoJSONWrapper

/**
 * Serialize a vector-tile-js-created tile to pbf
 *
 * @param {Object} tile
 * @return {Buffer} uncompressed, pbf-serialized tile data
 */
function fromVectorTileJs (tile) {
  var layers = []
  for (var l in tile.layers) {
    layers.push(prepareLayer(tile.layers[l]))
  }

  var out = new Pbf()
  vtpb.tile.write({ layers: layers }, out)
  return out.finish()
}

/**
 * Serialized a geojson-vt-created tile to pbf.
 *
 * @param {Object} layers - An object mapping layer names to geojson-vt-created vector tile objects
 * @return {Buffer} uncompressed, pbf-serialized tile data
 */
function fromGeojsonVt (layers) {
  var l = {}
  for (var k in layers) {
    l[k] = new GeoJSONWrapper(layers[k].features)
    l[k].name = k
  }
  return fromVectorTileJs({layers: l})
}

/**
 * Prepare the given layer to be serialized by the auto-generated pbf
 * serializer by encoding the feature geometry and properties.
 */
function prepareLayer (layer) {
  var preparedLayer = {
    name: layer.name || '',
    version: layer.version || 1,
    extent: layer.extent || 4096,
    keys: [],
    values: [],
    features: []
  }

  var keycache = {}
  var valuecache = {}

  for (var i = 0; i < layer.length; i++) {
    var feature = layer.feature(i)
    feature.geometry = encodeGeometry(feature.loadGeometry())

    var tags = []
    for (var key in feature.properties) {
      var keyIndex = keycache[key]
      if (typeof keyIndex === 'undefined') {
        preparedLayer.keys.push(key)
        keyIndex = preparedLayer.keys.length - 1
        keycache[key] = keyIndex
      }
      var value = wrapValue(feature.properties[key])
      var valueIndex = valuecache[value.key]
      if (typeof valueIndex === 'undefined') {
        preparedLayer.values.push(value)
        valueIndex = preparedLayer.values.length - 1
        valuecache[value.key] = valueIndex
      }
      tags.push(keyIndex)
      tags.push(valueIndex)
    }

    feature.tags = tags
    preparedLayer.features.push(feature)
  }

  return preparedLayer
}

function command (cmd, length) {
  return (length << 3) + (cmd & 0x7)
}

function zigzag (num) {
  return (num << 1) ^ (num >> 31)
}

/**
 * Encode a polygon's geometry into an array ready to be serialized
 * to mapbox vector tile specified geometry data.
 *
 * @param {Array} Rings, each being an array of [x, y] tile-space coordinates
 * @return {Array} encoded geometry
 */
function encodeGeometry (geometry) {
  var encoded = []
  var x = 0
  var y = 0
  var rings = geometry.length
  for (var r = 0; r < rings; r++) {
    var ring = geometry[r]
    encoded.push(command(1, 1)) // moveto
    for (var i = 0; i < ring.length; i++) {
      if (i === 1) {
        encoded.push(command(2, ring.length - 1)) // lineto
      }
      var dx = ring[i].x - x
      var dy = ring[i].y - y
      encoded.push(zigzag(dx), zigzag(dy))
      x += dx
      y += dy
    }
  }

  return encoded
}

/**
 * Wrap a property value according to its type. The returned object
 * is of the form { xxxx_value: primitiveValue }, which is what the generated
 * protobuf serializer expects.
 */
function wrapValue (value) {
  var result
  var type = typeof value
  if (type === 'string') {
    result = { string_value: value }
  } else if (type === 'boolean') {
    result = { bool_value: value }
  } else if (type === 'number') {
    if (value % 1 !== 0) {
      result = { double_value: value }
    } else if (value < 0) {
      result = { sint_value: value }
    } else {
      result = { uint_value: value }
    }
  } else {
    value = JSON.stringify(value)
    result = { string_value: value }
  }

  result.key = type + ':' + value
  return result
}

},{"./lib/geojson_wrapper":1009,"./vector-tile-pb":1010,"pbf":465}],1009:[function(require,module,exports){
'use strict'

var Point = require('point-geometry')
var VectorTileFeature = require('vector-tile').VectorTileFeature

module.exports = GeoJSONWrapper

// conform to vectortile api
function GeoJSONWrapper (features) {
  this.features = features
  this.length = features.length
}

GeoJSONWrapper.prototype.feature = function (i) {
  return new FeatureWrapper(this.features[i])
}

function FeatureWrapper (feature) {
  this.id = typeof feature.id === 'number' ? feature.id : undefined
  this.type = feature.type
  this.rawGeometry = feature.type === 1 ? [feature.geometry] : feature.geometry
  this.properties = feature.tags
  this.extent = 4096
}

FeatureWrapper.prototype.loadGeometry = function () {
  var rings = this.rawGeometry
  this.geometry = []

  for (var i = 0; i < rings.length; i++) {
    var ring = rings[i]
    var newRing = []
    for (var j = 0; j < ring.length; j++) {
      newRing.push(new Point(ring[j][0], ring[j][1]))
    }
    this.geometry.push(newRing)
  }
  return this.geometry
}

FeatureWrapper.prototype.bbox = function () {
  if (!this.geometry) this.loadGeometry()

  var rings = this.geometry
  var x1 = Infinity
  var x2 = -Infinity
  var y1 = Infinity
  var y2 = -Infinity

  for (var i = 0; i < rings.length; i++) {
    var ring = rings[i]

    for (var j = 0; j < ring.length; j++) {
      var coord = ring[j]

      x1 = Math.min(x1, coord.x)
      x2 = Math.max(x2, coord.x)
      y1 = Math.min(y1, coord.y)
      y2 = Math.max(y2, coord.y)
    }
  }

  return [x1, y1, x2, y2]
}

FeatureWrapper.prototype.toGeoJSON = VectorTileFeature.prototype.toGeoJSON

},{"point-geometry":919,"vector-tile":1002}],1010:[function(require,module,exports){
'use strict';

// tile ========================================

var tile = exports.tile = {read: readTile, write: writeTile};

tile.GeomType = {
    "Unknown": 0,
    "Point": 1,
    "LineString": 2,
    "Polygon": 3
};

function readTile(pbf, end) {
    return pbf.readFields(readTileField, {"layers": []}, end);
}

function readTileField(tag, tile, pbf) {
    if (tag === 3) tile.layers.push(readLayer(pbf, pbf.readVarint() + pbf.pos));
}

function writeTile(tile, pbf) {
    var i;
    if (tile.layers !== undefined) for (i = 0; i < tile.layers.length; i++) pbf.writeMessage(3, writeLayer, tile.layers[i]);
}

// value ========================================

tile.value = {read: readValue, write: writeValue};

function readValue(pbf, end) {
    return pbf.readFields(readValueField, {}, end);
}

function readValueField(tag, value, pbf) {
    if (tag === 1) value.string_value = pbf.readString();
    else if (tag === 2) value.float_value = pbf.readFloat();
    else if (tag === 3) value.double_value = pbf.readDouble();
    else if (tag === 4) value.int_value = pbf.readVarint();
    else if (tag === 5) value.uint_value = pbf.readVarint();
    else if (tag === 6) value.sint_value = pbf.readSVarint();
    else if (tag === 7) value.bool_value = pbf.readBoolean();
}

function writeValue(value, pbf) {
    if (value.string_value !== undefined) pbf.writeStringField(1, value.string_value);
    if (value.float_value !== undefined) pbf.writeFloatField(2, value.float_value);
    if (value.double_value !== undefined) pbf.writeDoubleField(3, value.double_value);
    if (value.int_value !== undefined) pbf.writeVarintField(4, value.int_value);
    if (value.uint_value !== undefined) pbf.writeVarintField(5, value.uint_value);
    if (value.sint_value !== undefined) pbf.writeSVarintField(6, value.sint_value);
    if (value.bool_value !== undefined) pbf.writeBooleanField(7, value.bool_value);
}

// feature ========================================

tile.feature = {read: readFeature, write: writeFeature};

function readFeature(pbf, end) {
    var feature = pbf.readFields(readFeatureField, {}, end);
    if (feature.type === undefined) feature.type = "Unknown";
    return feature;
}

function readFeatureField(tag, feature, pbf) {
    if (tag === 1) feature.id = pbf.readVarint();
    else if (tag === 2) feature.tags = pbf.readPackedVarint();
    else if (tag === 3) feature.type = pbf.readVarint();
    else if (tag === 4) feature.geometry = pbf.readPackedVarint();
}

function writeFeature(feature, pbf) {
    if (feature.id !== undefined) pbf.writeVarintField(1, feature.id);
    if (feature.tags !== undefined) pbf.writePackedVarint(2, feature.tags);
    if (feature.type !== undefined) pbf.writeVarintField(3, feature.type);
    if (feature.geometry !== undefined) pbf.writePackedVarint(4, feature.geometry);
}

// layer ========================================

tile.layer = {read: readLayer, write: writeLayer};

function readLayer(pbf, end) {
    return pbf.readFields(readLayerField, {"features": [], "keys": [], "values": []}, end);
}

function readLayerField(tag, layer, pbf) {
    if (tag === 15) layer.version = pbf.readVarint();
    else if (tag === 1) layer.name = pbf.readString();
    else if (tag === 2) layer.features.push(readFeature(pbf, pbf.readVarint() + pbf.pos));
    else if (tag === 3) layer.keys.push(pbf.readString());
    else if (tag === 4) layer.values.push(readValue(pbf, pbf.readVarint() + pbf.pos));
    else if (tag === 5) layer.extent = pbf.readVarint();
}

function writeLayer(layer, pbf) {
    if (layer.version !== undefined) pbf.writeVarintField(15, layer.version);
    if (layer.name !== undefined) pbf.writeStringField(1, layer.name);
    var i;
    if (layer.features !== undefined) for (i = 0; i < layer.features.length; i++) pbf.writeMessage(2, writeFeature, layer.features[i]);
    if (layer.keys !== undefined) for (i = 0; i < layer.keys.length; i++) pbf.writeStringField(3, layer.keys[i]);
    if (layer.values !== undefined) for (i = 0; i < layer.values.length; i++) pbf.writeMessage(4, writeValue, layer.values[i]);
    if (layer.extent !== undefined) pbf.writeVarintField(5, layer.extent);
}

},{}],1011:[function(require,module,exports){
// Copyright (C) 2011 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @fileoverview Install a leaky WeakMap emulation on platforms that
 * don't provide a built-in one.
 *
 * <p>Assumes that an ES5 platform where, if {@code WeakMap} is
 * already present, then it conforms to the anticipated ES6
 * specification. To run this file on an ES5 or almost ES5
 * implementation where the {@code WeakMap} specification does not
 * quite conform, run <code>repairES5.js</code> first.
 *
 * <p>Even though WeakMapModule is not global, the linter thinks it
 * is, which is why it is in the overrides list below.
 *
 * <p>NOTE: Before using this WeakMap emulation in a non-SES
 * environment, see the note below about hiddenRecord.
 *
 * @author Mark S. Miller
 * @requires crypto, ArrayBuffer, Uint8Array, navigator, console
 * @overrides WeakMap, ses, Proxy
 * @overrides WeakMapModule
 */

/**
 * This {@code WeakMap} emulation is observably equivalent to the
 * ES-Harmony WeakMap, but with leakier garbage collection properties.
 *
 * <p>As with true WeakMaps, in this emulation, a key does not
 * retain maps indexed by that key and (crucially) a map does not
 * retain the keys it indexes. A map by itself also does not retain
 * the values associated with that map.
 *
 * <p>However, the values associated with a key in some map are
 * retained so long as that key is retained and those associations are
 * not overridden. For example, when used to support membranes, all
 * values exported from a given membrane will live for the lifetime
 * they would have had in the absence of an interposed membrane. Even
 * when the membrane is revoked, all objects that would have been
 * reachable in the absence of revocation will still be reachable, as
 * far as the GC can tell, even though they will no longer be relevant
 * to ongoing computation.
 *
 * <p>The API implemented here is approximately the API as implemented
 * in FF6.0a1 and agreed to by MarkM, Andreas Gal, and Dave Herman,
 * rather than the offially approved proposal page. TODO(erights):
 * upgrade the ecmascript WeakMap proposal page to explain this API
 * change and present to EcmaScript committee for their approval.
 *
 * <p>The first difference between the emulation here and that in
 * FF6.0a1 is the presence of non enumerable {@code get___, has___,
 * set___, and delete___} methods on WeakMap instances to represent
 * what would be the hidden internal properties of a primitive
 * implementation. Whereas the FF6.0a1 WeakMap.prototype methods
 * require their {@code this} to be a genuine WeakMap instance (i.e.,
 * an object of {@code [[Class]]} "WeakMap}), since there is nothing
 * unforgeable about the pseudo-internal method names used here,
 * nothing prevents these emulated prototype methods from being
 * applied to non-WeakMaps with pseudo-internal methods of the same
 * names.
 *
 * <p>Another difference is that our emulated {@code
 * WeakMap.prototype} is not itself a WeakMap. A problem with the
 * current FF6.0a1 API is that WeakMap.prototype is itself a WeakMap
 * providing ambient mutability and an ambient communications
 * channel. Thus, if a WeakMap is already present and has this
 * problem, repairES5.js wraps it in a safe wrappper in order to
 * prevent access to this channel. (See
 * PATCH_MUTABLE_FROZEN_WEAKMAP_PROTO in repairES5.js).
 */

/**
 * If this is a full <a href=
 * "http://code.google.com/p/es-lab/wiki/SecureableES5"
 * >secureable ES5</a> platform and the ES-Harmony {@code WeakMap} is
 * absent, install an approximate emulation.
 *
 * <p>If WeakMap is present but cannot store some objects, use our approximate
 * emulation as a wrapper.
 *
 * <p>If this is almost a secureable ES5 platform, then WeakMap.js
 * should be run after repairES5.js.
 *
 * <p>See {@code WeakMap} for documentation of the garbage collection
 * properties of this WeakMap emulation.
 */
(function WeakMapModule() {
  "use strict";

  if (typeof ses !== 'undefined' && ses.ok && !ses.ok()) {
    // already too broken, so give up
    return;
  }

  /**
   * In some cases (current Firefox), we must make a choice betweeen a
   * WeakMap which is capable of using all varieties of host objects as
   * keys and one which is capable of safely using proxies as keys. See
   * comments below about HostWeakMap and DoubleWeakMap for details.
   *
   * This function (which is a global, not exposed to guests) marks a
   * WeakMap as permitted to do what is necessary to index all host
   * objects, at the cost of making it unsafe for proxies.
   *
   * Do not apply this function to anything which is not a genuine
   * fresh WeakMap.
   */
  function weakMapPermitHostObjects(map) {
    // identity of function used as a secret -- good enough and cheap
    if (map.permitHostObjects___) {
      map.permitHostObjects___(weakMapPermitHostObjects);
    }
  }
  if (typeof ses !== 'undefined') {
    ses.weakMapPermitHostObjects = weakMapPermitHostObjects;
  }

  // IE 11 has no Proxy but has a broken WeakMap such that we need to patch
  // it using DoubleWeakMap; this flag tells DoubleWeakMap so.
  var doubleWeakMapCheckSilentFailure = false;

  // Check if there is already a good-enough WeakMap implementation, and if so
  // exit without replacing it.
  if (typeof WeakMap === 'function') {
    var HostWeakMap = WeakMap;
    // There is a WeakMap -- is it good enough?
    if (typeof navigator !== 'undefined' &&
        /Firefox/.test(navigator.userAgent)) {
      // We're now *assuming not*, because as of this writing (2013-05-06)
      // Firefox's WeakMaps have a miscellany of objects they won't accept, and
      // we don't want to make an exhaustive list, and testing for just one
      // will be a problem if that one is fixed alone (as they did for Event).

      // If there is a platform that we *can* reliably test on, here's how to
      // do it:
      //  var problematic = ... ;
      //  var testHostMap = new HostWeakMap();
      //  try {
      //    testHostMap.set(problematic, 1);  // Firefox 20 will throw here
      //    if (testHostMap.get(problematic) === 1) {
      //      return;
      //    }
      //  } catch (e) {}

    } else {
      // IE 11 bug: WeakMaps silently fail to store frozen objects.
      var testMap = new HostWeakMap();
      var testObject = Object.freeze({});
      testMap.set(testObject, 1);
      if (testMap.get(testObject) !== 1) {
        doubleWeakMapCheckSilentFailure = true;
        // Fall through to installing our WeakMap.
      } else {
        module.exports = WeakMap;
        return;
      }
    }
  }

  var hop = Object.prototype.hasOwnProperty;
  var gopn = Object.getOwnPropertyNames;
  var defProp = Object.defineProperty;
  var isExtensible = Object.isExtensible;

  /**
   * Security depends on HIDDEN_NAME being both <i>unguessable</i> and
   * <i>undiscoverable</i> by untrusted code.
   *
   * <p>Given the known weaknesses of Math.random() on existing
   * browsers, it does not generate unguessability we can be confident
   * of.
   *
   * <p>It is the monkey patching logic in this file that is intended
   * to ensure undiscoverability. The basic idea is that there are
   * three fundamental means of discovering properties of an object:
   * The for/in loop, Object.keys(), and Object.getOwnPropertyNames(),
   * as well as some proposed ES6 extensions that appear on our
   * whitelist. The first two only discover enumerable properties, and
   * we only use HIDDEN_NAME to name a non-enumerable property, so the
   * only remaining threat should be getOwnPropertyNames and some
   * proposed ES6 extensions that appear on our whitelist. We monkey
   * patch them to remove HIDDEN_NAME from the list of properties they
   * returns.
   *
   * <p>TODO(erights): On a platform with built-in Proxies, proxies
   * could be used to trap and thereby discover the HIDDEN_NAME, so we
   * need to monkey patch Proxy.create, Proxy.createFunction, etc, in
   * order to wrap the provided handler with the real handler which
   * filters out all traps using HIDDEN_NAME.
   *
   * <p>TODO(erights): Revisit Mike Stay's suggestion that we use an
   * encapsulated function at a not-necessarily-secret name, which
   * uses the Stiegler shared-state rights amplification pattern to
   * reveal the associated value only to the WeakMap in which this key
   * is associated with that value. Since only the key retains the
   * function, the function can also remember the key without causing
   * leakage of the key, so this doesn't violate our general gc
   * goals. In addition, because the name need not be a guarded
   * secret, we could efficiently handle cross-frame frozen keys.
   */
  var HIDDEN_NAME_PREFIX = 'weakmap:';
  var HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'ident:' + Math.random() + '___';

  if (typeof crypto !== 'undefined' &&
      typeof crypto.getRandomValues === 'function' &&
      typeof ArrayBuffer === 'function' &&
      typeof Uint8Array === 'function') {
    var ab = new ArrayBuffer(25);
    var u8s = new Uint8Array(ab);
    crypto.getRandomValues(u8s);
    HIDDEN_NAME = HIDDEN_NAME_PREFIX + 'rand:' +
      Array.prototype.map.call(u8s, function(u8) {
        return (u8 % 36).toString(36);
      }).join('') + '___';
  }

  function isNotHiddenName(name) {
    return !(
        name.substr(0, HIDDEN_NAME_PREFIX.length) == HIDDEN_NAME_PREFIX &&
        name.substr(name.length - 3) === '___');
  }

  /**
   * Monkey patch getOwnPropertyNames to avoid revealing the
   * HIDDEN_NAME.
   *
   * <p>The ES5.1 spec requires each name to appear only once, but as
   * of this writing, this requirement is controversial for ES6, so we
   * made this code robust against this case. If the resulting extra
   * search turns out to be expensive, we can probably relax this once
   * ES6 is adequately supported on all major browsers, iff no browser
   * versions we support at that time have relaxed this constraint
   * without providing built-in ES6 WeakMaps.
   */
  defProp(Object, 'getOwnPropertyNames', {
    value: function fakeGetOwnPropertyNames(obj) {
      return gopn(obj).filter(isNotHiddenName);
    }
  });

  /**
   * getPropertyNames is not in ES5 but it is proposed for ES6 and
   * does appear in our whitelist, so we need to clean it too.
   */
  if ('getPropertyNames' in Object) {
    var originalGetPropertyNames = Object.getPropertyNames;
    defProp(Object, 'getPropertyNames', {
      value: function fakeGetPropertyNames(obj) {
        return originalGetPropertyNames(obj).filter(isNotHiddenName);
      }
    });
  }

  /**
   * <p>To treat objects as identity-keys with reasonable efficiency
   * on ES5 by itself (i.e., without any object-keyed collections), we
   * need to add a hidden property to such key objects when we
   * can. This raises several issues:
   * <ul>
   * <li>Arranging to add this property to objects before we lose the
   *     chance, and
   * <li>Hiding the existence of this new property from most
   *     JavaScript code.
   * <li>Preventing <i>certification theft</i>, where one object is
   *     created falsely claiming to be the key of an association
   *     actually keyed by another object.
   * <li>Preventing <i>value theft</i>, where untrusted code with
   *     access to a key object but not a weak map nevertheless
   *     obtains access to the value associated with that key in that
   *     weak map.
   * </ul>
   * We do so by
   * <ul>
   * <li>Making the name of the hidden property unguessable, so "[]"
   *     indexing, which we cannot intercept, cannot be used to access
   *     a property without knowing the name.
   * <li>Making the hidden property non-enumerable, so we need not
   *     worry about for-in loops or {@code Object.keys},
   * <li>monkey patching those reflective methods that would
   *     prevent extensions, to add this hidden property first,
   * <li>monkey patching those methods that would reveal this
   *     hidden property.
   * </ul>
   * Unfortunately, because of same-origin iframes, we cannot reliably
   * add this hidden property before an object becomes
   * non-extensible. Instead, if we encounter a non-extensible object
   * without a hidden record that we can detect (whether or not it has
   * a hidden record stored under a name secret to us), then we just
   * use the key object itself to represent its identity in a brute
   * force leaky map stored in the weak map, losing all the advantages
   * of weakness for these.
   */
  function getHiddenRecord(key) {
    if (key !== Object(key)) {
      throw new TypeError('Not an object: ' + key);
    }
    var hiddenRecord = key[HIDDEN_NAME];
    if (hiddenRecord && hiddenRecord.key === key) { return hiddenRecord; }
    if (!isExtensible(key)) {
      // Weak map must brute force, as explained in doc-comment above.
      return void 0;
    }

    // The hiddenRecord and the key point directly at each other, via
    // the "key" and HIDDEN_NAME properties respectively. The key
    // field is for quickly verifying that this hidden record is an
    // own property, not a hidden record from up the prototype chain.
    //
    // NOTE: Because this WeakMap emulation is meant only for systems like
    // SES where Object.prototype is frozen without any numeric
    // properties, it is ok to use an object literal for the hiddenRecord.
    // This has two advantages:
    // * It is much faster in a performance critical place
    // * It avoids relying on Object.create(null), which had been
    //   problematic on Chrome 28.0.1480.0. See
    //   https://code.google.com/p/google-caja/issues/detail?id=1687
    hiddenRecord = { key: key };

    // When using this WeakMap emulation on platforms where
    // Object.prototype might not be frozen and Object.create(null) is
    // reliable, use the following two commented out lines instead.
    // hiddenRecord = Object.create(null);
    // hiddenRecord.key = key;

    // Please contact us if you need this to work on platforms where
    // Object.prototype might not be frozen and
    // Object.create(null) might not be reliable.

    try {
      defProp(key, HIDDEN_NAME, {
        value: hiddenRecord,
        writable: false,
        enumerable: false,
        configurable: false
      });
      return hiddenRecord;
    } catch (error) {
      // Under some circumstances, isExtensible seems to misreport whether
      // the HIDDEN_NAME can be defined.
      // The circumstances have not been isolated, but at least affect
      // Node.js v0.10.26 on TravisCI / Linux, but not the same version of
      // Node.js on OS X.
      return void 0;
    }
  }

  /**
   * Monkey patch operations that would make their argument
   * non-extensible.
   *
   * <p>The monkey patched versions throw a TypeError if their
   * argument is not an object, so it should only be done to functions
   * that should throw a TypeError anyway if their argument is not an
   * object.
   */
  (function(){
    var oldFreeze = Object.freeze;
    defProp(Object, 'freeze', {
      value: function identifyingFreeze(obj) {
        getHiddenRecord(obj);
        return oldFreeze(obj);
      }
    });
    var oldSeal = Object.seal;
    defProp(Object, 'seal', {
      value: function identifyingSeal(obj) {
        getHiddenRecord(obj);
        return oldSeal(obj);
      }
    });
    var oldPreventExtensions = Object.preventExtensions;
    defProp(Object, 'preventExtensions', {
      value: function identifyingPreventExtensions(obj) {
        getHiddenRecord(obj);
        return oldPreventExtensions(obj);
      }
    });
  })();

  function constFunc(func) {
    func.prototype = null;
    return Object.freeze(func);
  }

  var calledAsFunctionWarningDone = false;
  function calledAsFunctionWarning() {
    // Future ES6 WeakMap is currently (2013-09-10) expected to reject WeakMap()
    // but we used to permit it and do it ourselves, so warn only.
    if (!calledAsFunctionWarningDone && typeof console !== 'undefined') {
      calledAsFunctionWarningDone = true;
      console.warn('WeakMap should be invoked as new WeakMap(), not ' +
          'WeakMap(). This will be an error in the future.');
    }
  }

  var nextId = 0;

  var OurWeakMap = function() {
    if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
      calledAsFunctionWarning();
    }

    // We are currently (12/25/2012) never encountering any prematurely
    // non-extensible keys.
    var keys = []; // brute force for prematurely non-extensible keys.
    var values = []; // brute force for corresponding values.
    var id = nextId++;

    function get___(key, opt_default) {
      var index;
      var hiddenRecord = getHiddenRecord(key);
      if (hiddenRecord) {
        return id in hiddenRecord ? hiddenRecord[id] : opt_default;
      } else {
        index = keys.indexOf(key);
        return index >= 0 ? values[index] : opt_default;
      }
    }

    function has___(key) {
      var hiddenRecord = getHiddenRecord(key);
      if (hiddenRecord) {
        return id in hiddenRecord;
      } else {
        return keys.indexOf(key) >= 0;
      }
    }

    function set___(key, value) {
      var index;
      var hiddenRecord = getHiddenRecord(key);
      if (hiddenRecord) {
        hiddenRecord[id] = value;
      } else {
        index = keys.indexOf(key);
        if (index >= 0) {
          values[index] = value;
        } else {
          // Since some browsers preemptively terminate slow turns but
          // then continue computing with presumably corrupted heap
          // state, we here defensively get keys.length first and then
          // use it to update both the values and keys arrays, keeping
          // them in sync.
          index = keys.length;
          values[index] = value;
          // If we crash here, values will be one longer than keys.
          keys[index] = key;
        }
      }
      return this;
    }

    function delete___(key) {
      var hiddenRecord = getHiddenRecord(key);
      var index, lastIndex;
      if (hiddenRecord) {
        return id in hiddenRecord && delete hiddenRecord[id];
      } else {
        index = keys.indexOf(key);
        if (index < 0) {
          return false;
        }
        // Since some browsers preemptively terminate slow turns but
        // then continue computing with potentially corrupted heap
        // state, we here defensively get keys.length first and then use
        // it to update both the keys and the values array, keeping
        // them in sync. We update the two with an order of assignments,
        // such that any prefix of these assignments will preserve the
        // key/value correspondence, either before or after the delete.
        // Note that this needs to work correctly when index === lastIndex.
        lastIndex = keys.length - 1;
        keys[index] = void 0;
        // If we crash here, there's a void 0 in the keys array, but
        // no operation will cause a "keys.indexOf(void 0)", since
        // getHiddenRecord(void 0) will always throw an error first.
        values[index] = values[lastIndex];
        // If we crash here, values[index] cannot be found here,
        // because keys[index] is void 0.
        keys[index] = keys[lastIndex];
        // If index === lastIndex and we crash here, then keys[index]
        // is still void 0, since the aliasing killed the previous key.
        keys.length = lastIndex;
        // If we crash here, keys will be one shorter than values.
        values.length = lastIndex;
        return true;
      }
    }

    return Object.create(OurWeakMap.prototype, {
      get___:    { value: constFunc(get___) },
      has___:    { value: constFunc(has___) },
      set___:    { value: constFunc(set___) },
      delete___: { value: constFunc(delete___) }
    });
  };

  OurWeakMap.prototype = Object.create(Object.prototype, {
    get: {
      /**
       * Return the value most recently associated with key, or
       * opt_default if none.
       */
      value: function get(key, opt_default) {
        return this.get___(key, opt_default);
      },
      writable: true,
      configurable: true
    },

    has: {
      /**
       * Is there a value associated with key in this WeakMap?
       */
      value: function has(key) {
        return this.has___(key);
      },
      writable: true,
      configurable: true
    },

    set: {
      /**
       * Associate value with key in this WeakMap, overwriting any
       * previous association if present.
       */
      value: function set(key, value) {
        return this.set___(key, value);
      },
      writable: true,
      configurable: true
    },

    'delete': {
      /**
       * Remove any association for key in this WeakMap, returning
       * whether there was one.
       *
       * <p>Note that the boolean return here does not work like the
       * {@code delete} operator. The {@code delete} operator returns
       * whether the deletion succeeds at bringing about a state in
       * which the deleted property is absent. The {@code delete}
       * operator therefore returns true if the property was already
       * absent, whereas this {@code delete} method returns false if
       * the association was already absent.
       */
      value: function remove(key) {
        return this.delete___(key);
      },
      writable: true,
      configurable: true
    }
  });

  if (typeof HostWeakMap === 'function') {
    (function() {
      // If we got here, then the platform has a WeakMap but we are concerned
      // that it may refuse to store some key types. Therefore, make a map
      // implementation which makes use of both as possible.

      // In this mode we are always using double maps, so we are not proxy-safe.
      // This combination does not occur in any known browser, but we had best
      // be safe.
      if (doubleWeakMapCheckSilentFailure && typeof Proxy !== 'undefined') {
        Proxy = undefined;
      }

      function DoubleWeakMap() {
        if (!(this instanceof OurWeakMap)) {  // approximate test for new ...()
          calledAsFunctionWarning();
        }

        // Preferable, truly weak map.
        var hmap = new HostWeakMap();

        // Our hidden-property-based pseudo-weak-map. Lazily initialized in the
        // 'set' implementation; thus we can avoid performing extra lookups if
        // we know all entries actually stored are entered in 'hmap'.
        var omap = undefined;

        // Hidden-property maps are not compatible with proxies because proxies
        // can observe the hidden name and either accidentally expose it or fail
        // to allow the hidden property to be set. Therefore, we do not allow
        // arbitrary WeakMaps to switch to using hidden properties, but only
        // those which need the ability, and unprivileged code is not allowed
        // to set the flag.
        //
        // (Except in doubleWeakMapCheckSilentFailure mode in which case we
        // disable proxies.)
        var enableSwitching = false;

        function dget(key, opt_default) {
          if (omap) {
            return hmap.has(key) ? hmap.get(key)
                : omap.get___(key, opt_default);
          } else {
            return hmap.get(key, opt_default);
          }
        }

        function dhas(key) {
          return hmap.has(key) || (omap ? omap.has___(key) : false);
        }

        var dset;
        if (doubleWeakMapCheckSilentFailure) {
          dset = function(key, value) {
            hmap.set(key, value);
            if (!hmap.has(key)) {
              if (!omap) { omap = new OurWeakMap(); }
              omap.set(key, value);
            }
            return this;
          };
        } else {
          dset = function(key, value) {
            if (enableSwitching) {
              try {
                hmap.set(key, value);
              } catch (e) {
                if (!omap) { omap = new OurWeakMap(); }
                omap.set___(key, value);
              }
            } else {
              hmap.set(key, value);
            }
            return this;
          };
        }

        function ddelete(key) {
          var result = !!hmap['delete'](key);
          if (omap) { return omap.delete___(key) || result; }
          return result;
        }

        return Object.create(OurWeakMap.prototype, {
          get___:    { value: constFunc(dget) },
          has___:    { value: constFunc(dhas) },
          set___:    { value: constFunc(dset) },
          delete___: { value: constFunc(ddelete) },
          permitHostObjects___: { value: constFunc(function(token) {
            if (token === weakMapPermitHostObjects) {
              enableSwitching = true;
            } else {
              throw new Error('bogus call to permitHostObjects___');
            }
          })}
        });
      }
      DoubleWeakMap.prototype = OurWeakMap.prototype;
      module.exports = DoubleWeakMap;

      // define .constructor to hide OurWeakMap ctor
      Object.defineProperty(WeakMap.prototype, 'constructor', {
        value: WeakMap,
        enumerable: false,  // as default .constructor is
        configurable: true,
        writable: true
      });
    })();
  } else {
    // There is no host WeakMap, so we must use the emulation.

    // Emulated WeakMaps are incompatible with native proxies (because proxies
    // can observe the hidden name), so we must disable Proxy usage (in
    // ArrayLike and Domado, currently).
    if (typeof Proxy !== 'undefined') {
      Proxy = undefined;
    }

    module.exports = OurWeakMap;
  }
})();

},{}],1012:[function(require,module,exports){
var hiddenStore = require('./hidden-store.js');

module.exports = createStore;

function createStore() {
    var key = {};

    return function (obj) {
        if ((typeof obj !== 'object' || obj === null) &&
            typeof obj !== 'function'
        ) {
            throw new Error('Weakmap-shim: Key must be object')
        }

        var store = obj.valueOf(key);
        return store && store.identity === key ?
            store : hiddenStore(obj, key);
    };
}

},{"./hidden-store.js":1013}],1013:[function(require,module,exports){
module.exports = hiddenStore;

function hiddenStore(obj, key) {
    var store = { identity: key };
    var valueOf = obj.valueOf;

    Object.defineProperty(obj, "valueOf", {
        value: function (value) {
            return value !== key ?
                valueOf.apply(this, arguments) : store;
        },
        writable: true
    });

    return store;
}

},{}],1014:[function(require,module,exports){
// Original - @Gozola.
// https://gist.github.com/Gozala/1269991
// This is a reimplemented version (with a few bug fixes).

var createStore = require('./create-store.js');

module.exports = weakMap;

function weakMap() {
    var privates = createStore();

    return {
        'get': function (key, fallback) {
            var store = privates(key)
            return store.hasOwnProperty('value') ?
                store.value : fallback
        },
        'set': function (key, value) {
            privates(key).value = value;
            return this;
        },
        'has': function(key) {
            return 'value' in privates(key);
        },
        'delete': function (key) {
            return delete privates(key).value;
        }
    }
}

},{"./create-store.js":1012}],1015:[function(require,module,exports){
var getContext = require('get-canvas-context')

module.exports = function getWebGLContext (opt) {
  return getContext('webgl', opt)
}

},{"get-canvas-context":112}],1016:[function(require,module,exports){
var bundleFn = arguments[3];
var sources = arguments[4];
var cache = arguments[5];

var stringify = JSON.stringify;

module.exports = function (fn, options) {
    var wkey;
    var cacheKeys = Object.keys(cache);

    for (var i = 0, l = cacheKeys.length; i < l; i++) {
        var key = cacheKeys[i];
        var exp = cache[key].exports;
        // Using babel as a transpiler to use esmodule, the export will always
        // be an object with the default export as a property of it. To ensure
        // the existing api and babel esmodule exports are both supported we
        // check for both
        if (exp === fn || exp && exp.default === fn) {
            wkey = key;
            break;
        }
    }

    if (!wkey) {
        wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
        var wcache = {};
        for (var i = 0, l = cacheKeys.length; i < l; i++) {
            var key = cacheKeys[i];
            wcache[key] = key;
        }
        sources[wkey] = [
            Function(['require','module','exports'], '(' + fn + ')(self)'),
            wcache
        ];
    }
    var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);

    var scache = {}; scache[wkey] = wkey;
    sources[skey] = [
        Function(['require'], (
            // try to call default if defined to also support babel esmodule
            // exports
            'var f = require(' + stringify(wkey) + ');' +
            '(f.default ? f.default : f)(self);'
        )),
        scache
    ];

    var workerSources = {};
    resolveSources(skey);

    function resolveSources(key) {
        workerSources[key] = true;

        for (var depPath in sources[key][1]) {
            var depKey = sources[key][1][depPath];
            if (!workerSources[depKey]) {
                resolveSources(depKey);
            }
        }
    }

    var src = '(' + bundleFn + ')({'
        + Object.keys(workerSources).map(function (key) {
            return stringify(key) + ':['
                + sources[key][0]
                + ',' + stringify(sources[key][1]) + ']'
            ;
        }).join(',')
        + '},{},[' + stringify(skey) + '])'
    ;

    var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;

    var blob = new Blob([src], { type: 'text/javascript' });
    if (options && options.bare) { return blob; }
    var workerUrl = URL.createObjectURL(blob);
    var worker = new Worker(workerUrl);
    worker.objectURL = workerUrl;
    return worker;
};

},{}],1017:[function(require,module,exports){
module.exports.RADIUS = 6378137;
module.exports.FLATTENING = 1/298.257223563;
module.exports.POLAR_RADIUS = 6356752.3142;

},{}],1018:[function(require,module,exports){
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define(['exports'], factory) :
    (factory((global.WhooTS = global.WhooTS || {})));
}(this, function (exports) {

/**
 * getURL
 *
 * @param    {String}  baseUrl  Base url of the WMS server
 * @param    {String}  layer    Layer name
 * @param    {Number}  x        Tile coordinate x
 * @param    {Number}  y        Tile coordinate y
 * @param    {Number}  z        Tile zoom
 * @param    {Object}  [options]
 * @param    {String}  [options.format='image/png']
 * @param    {String}  [options.service='WMS']
 * @param    {String}  [options.version='1.1.1']
 * @param    {String}  [options.request='GetMap']
 * @param    {String}  [options.srs='EPSG:3857']
 * @param    {Number}  [options.width='256']
 * @param    {Number}  [options.height='256']
 * @returns  {String}  url
 * @example
 * var baseUrl = 'http://geodata.state.nj.us/imagerywms/Natural2015';
 * var layer = 'Natural2015';
 * var url = whoots.getURL(baseUrl, layer, 154308, 197167, 19);
 */
function getURL(baseUrl, layer, x, y, z, options) {
    options = options || {};

    var url = baseUrl + '?' + [
        'bbox='    + getTileBBox(x, y, z),
        'format='  + (options.format || 'image/png'),
        'service=' + (options.service || 'WMS'),
        'version=' + (options.version || '1.1.1'),
        'request=' + (options.request || 'GetMap'),
        'srs='     + (options.srs || 'EPSG:3857'),
        'width='   + (options.width || 256),
        'height='  + (options.height || 256),
        'layers='  + layer
    ].join('&');

    return url;
}


/**
 * getTileBBox
 *
 * @param    {Number}  x  Tile coordinate x
 * @param    {Number}  y  Tile coordinate y
 * @param    {Number}  z  Tile zoom
 * @returns  {String}  String of the bounding box
 */
function getTileBBox(x, y, z) {
    // for Google/OSM tile scheme we need to alter the y
    y = (Math.pow(2, z) - y - 1);

    var min = getMercCoords(x * 256, y * 256, z),
        max = getMercCoords((x + 1) * 256, (y + 1) * 256, z);

    return min[0] + ',' + min[1] + ',' + max[0] + ',' + max[1];
}


/**
 * getMercCoords
 *
 * @param    {Number}  x  Pixel coordinate x
 * @param    {Number}  y  Pixel coordinate y
 * @param    {Number}  z  Tile zoom
 * @returns  {Array}   [x, y]
 */
function getMercCoords(x, y, z) {
    var resolution = (2 * Math.PI * 6378137 / 256) / Math.pow(2, z),
        merc_x = (x * resolution - 2 * Math.PI  * 6378137 / 2.0),
        merc_y = (y * resolution - 2 * Math.PI  * 6378137 / 2.0);

    return [merc_x, merc_y];
}

exports.getURL = getURL;
exports.getTileBBox = getTileBBox;
exports.getMercCoords = getMercCoords;

Object.defineProperty(exports, '__esModule', { value: true });

}));
},{}],1019:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Traditional Chinese calendar for jQuery v2.0.2.
   Written by Nicolas Riesco (enquiries@nicolasriesco.net) December 2016.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


var gregorianCalendar = main.instance();

/** Implementation of the traditional Chinese calendar.
    Source of calendar tables https://github.com/isee15/Lunar-Solar-Calendar-Converter .
    @class ChineseCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function ChineseCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

ChineseCalendar.prototype = new main.baseCalendar;

assign(ChineseCalendar.prototype, {
    /** The calendar name.
        @memberof ChineseCalendar */
    name: 'Chinese',
     /** Julian date of start of Gregorian epoch: 1 January 0001 CE.
        @memberof GregorianCalendar */
    jdEpoch: 1721425.5,
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof ChineseCalendar */
    hasYearZero: false,
    /** The minimum month number.
        This calendar uses month indices to account for intercalary months. 
        @memberof ChineseCalendar */
    minMonth: 0,
    /** The first month in the year.
        This calendar uses month indices to account for intercalary months. 
        @memberof ChineseCalendar */
    firstMonth: 0,
    /** The minimum day number.
        @memberof ChineseCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof ChineseCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Chinese',
            epochs: ['BEC', 'EC'],
            monthNumbers: function(date, padded) {
                if (typeof date === 'string') {
                    var match = date.match(MONTH_NUMBER_REGEXP);
                    return (match) ? match[0] : '';
                }

                var year = this._validateYear(date);
                var monthIndex = date.month();

                var month = '' + this.toChineseMonth(year, monthIndex);

                if (padded && month.length < 2) {
                    month = "0" + month;
                }

                if (this.isIntercalaryMonth(year, monthIndex)) {
                    month += 'i';
                }

                return month;
            },
            monthNames: function(date) {
                if (typeof date === 'string') {
                    var match = date.match(MONTH_NAME_REGEXP);
                    return (match) ? match[0] : '';
                }

                var year = this._validateYear(date);
                var monthIndex = date.month();

                var month = this.toChineseMonth(year, monthIndex);

                var monthName = ['一月','二月','三月','四月','五月','六月',
                    '七月','八月','九月','十月','十一月','十二月'][month - 1];

                if (this.isIntercalaryMonth(year, monthIndex)) {
                    monthName = '闰' + monthName;
                }

                return monthName;
            },
            monthNamesShort: function(date) {
                if (typeof date === 'string') {
                    var match = date.match(MONTH_SHORT_NAME_REGEXP);
                    return (match) ? match[0] : '';
                }

                var year = this._validateYear(date);
                var monthIndex = date.month();

                var month = this.toChineseMonth(year, monthIndex);

                var monthName = ['一','二','三','四','五','六',
                    '七','八','九','十','十一','十二'][month - 1];

                if (this.isIntercalaryMonth(year, monthIndex)) {
                    monthName = '闰' + monthName;
                }

                return monthName;
            },
            parseMonth: function(year, monthString) {
                year = this._validateYear(year);
                var month = parseInt(monthString);
                var isIntercalary;

                if (!isNaN(month)) {
                    var i = monthString[monthString.length - 1];
                    isIntercalary = (i === 'i' || i === 'I');
                } else {
                    if (monthString[0] === '闰') {
                        isIntercalary = true;
                        monthString = monthString.substring(1);
                    }
                    if (monthString[monthString.length - 1] === '月') {
                        monthString = monthString.substring(0, monthString.length - 1);
                    }
                    month = 1 +
                        ['一','二','三','四','五','六',
                        '七','八','九','十','十一','十二'].indexOf(monthString);
                }

                var monthIndex = this.toMonthIndex(year, month, isIntercalary);
                return monthIndex;
            },
            dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
            digits: null,
            dateFormat: 'yyyy/mm/dd',
            firstDay: 1,
            isRTL: false
        }
    },

    /** Check that a candidate date is from the same calendar and is valid.
        @memberof BaseCalendar
        @private
        @param year {CDate|number} The date or the year to validate.
        @param error {string} Error message if invalid.
        @return {number} The year.
        @throws Error if year out of range. */
    _validateYear: function(year, error) {
        if (year.year) {
            year = year.year();
        }

        if (typeof year !== 'number' || year < 1888 || year > 2111) {
            throw error.replace(/\{0\}/, this.local.name);
        }

        return year;
    },

    /** Retrieve the month index (i.e. accounting for intercalary months).
        @memberof ChineseCalendar
        @param year {number} The year.
        @param month {number} The month (1 for first month).
        @param [isIntercalary=false] {boolean} If month is intercalary.
        @return {number} The month index (0 for first month).
        @throws Error if an invalid month/year or a different calendar used. */
    toMonthIndex: function(year, month, isIntercalary) {
        // compute intercalary month in the year (0 if none)
        var intercalaryMonth = this.intercalaryMonth(year);

        // validate month
        var invalidIntercalaryMonth = 
            (isIntercalary && month !== intercalaryMonth);
        if (invalidIntercalaryMonth || month < 1 || month > 12) {
            throw main.local.invalidMonth
                .replace(/\{0\}/, this.local.name);
        }

        // compute month index
        var monthIndex;

        if (!intercalaryMonth) {
            monthIndex = month - 1;
        } else if(!isIntercalary && month <= intercalaryMonth) {
            monthIndex = month - 1;
        } else {
            monthIndex = month;
        }

        return monthIndex;
    },

    /** Retrieve the month (i.e. accounting for intercalary months).
        @memberof ChineseCalendar
        @param year {CDate|number} The date or the year to examine.
        @param monthIndex {number} The month index (0 for first month).
        @return {number} The month (1 for first month).
        @throws Error if an invalid month/year or a different calendar used. */
    toChineseMonth: function(year, monthIndex) {
        if (year.year) {
            year = year.year();
            monthIndex = year.month();
        }

        // compute intercalary month in the year (0 if none)
        var intercalaryMonth = this.intercalaryMonth(year);

        // validate month
        var maxMonthIndex = (intercalaryMonth) ? 12 : 11;
        if (monthIndex < 0 || monthIndex > maxMonthIndex) {
            throw main.local.invalidMonth
                .replace(/\{0\}/, this.local.name);
        }

        // compute Chinese month
        var month;

        if (!intercalaryMonth) {
            month = monthIndex + 1;
        } else if(monthIndex < intercalaryMonth) {
            month = monthIndex + 1;
        } else {
            month = monthIndex;
        }

        return month;
    },

    /** Determine the intercalary month of a year (if any).
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The intercalary month number, or 0 if none.
        @throws Error if an invalid year or a different calendar used. */
    intercalaryMonth: function(year) {
        year = this._validateYear(year);

        var monthDaysTable = LUNAR_MONTH_DAYS[year - LUNAR_MONTH_DAYS[0]];
        var intercalaryMonth = monthDaysTable >> 13;

        return intercalaryMonth;
    },

    /** Determine whether this date is an intercalary month.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [monthIndex] {number} The month index to examine.
        @return {boolean} <code>true</code> if this is an intercalary month, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    isIntercalaryMonth: function(year, monthIndex) {
        if (year.year) {
            year = year.year();
            monthIndex = year.month();
        }

        var intercalaryMonth = this.intercalaryMonth(year);

        return !!intercalaryMonth && intercalaryMonth === monthIndex;
    },

    /** Determine whether this date is in a leap year.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        return (this.intercalaryMonth(year) !== 0);
    },

    /** Determine the week of the year for a date - ISO 8601.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [monthIndex] {number} The month index to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, monthIndex, day) {
        // compute Chinese new year
        var validatedYear =
            this._validateYear(year, main.local.invalidyear);
        var packedDate =
            CHINESE_NEW_YEAR[validatedYear - CHINESE_NEW_YEAR[0]];

        var y = (packedDate >> 9) & 0xFFF;
        var m = (packedDate >> 5) & 0x0F;
        var d = packedDate & 0x1F;
        
        // find first Thrusday of the year
        var firstThursday;
        firstThursday = gregorianCalendar.newDate(y, m, d);
        firstThursday.add(4 - (firstThursday.dayOfWeek() || 7), 'd');

        // compute days from first Thursday
        var offset =
            this.toJD(year, monthIndex, day) - firstThursday.toJD();
        return 1 + Math.floor(offset / 7);
    },

    /** Retrieve the number of months in a year.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        return (this.leapYear(year)) ? 13 : 12;
    },

    /** Retrieve the number of days in a month.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [monthIndex] {number} The month index.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, monthIndex) {
        if (year.year) {
            monthIndex = year.month();
            year = year.year();
        }

        year = this._validateYear(year);

        var monthDaysTable = LUNAR_MONTH_DAYS[year - LUNAR_MONTH_DAYS[0]];

        var intercalaryMonth = monthDaysTable >> 13;
        var maxMonthIndex = (intercalaryMonth) ? 12 : 11;
        if (monthIndex > maxMonthIndex) {
            throw main.local.invalidMonth
                .replace(/\{0\}/, this.local.name);
        }

        var daysInMonth = (monthDaysTable & (1 << (12 - monthIndex))) ?
            30 : 29;

        return daysInMonth;
    },

    /** Determine whether this date is a week day.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [monthIndex] {number} The month index to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, monthIndex, day) {
        return (this.dayOfWeek(year, monthIndex, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof ChineseCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [monthIndex] {number} The month index to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, monthIndex, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = this._validateYear(date.year());
        monthIndex = date.month();
        day = date.day();

        var isIntercalary = this.isIntercalaryMonth(year, monthIndex);
        var month = this.toChineseMonth(year, monthIndex);

        var solar = toSolar(year, month, day, isIntercalary);

        return gregorianCalendar.toJD(solar.year, solar.month, solar.day);
    },

    /** Create a new date from a Julian date.
        @memberof ChineseCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        var date = gregorianCalendar.fromJD(jd);
        var lunar = toLunar(date.year(), date.month(), date.day());
        var monthIndex = this.toMonthIndex(
            lunar.year, lunar.month, lunar.isIntercalary);
        return this.newDate(lunar.year, monthIndex, lunar.day);
    },

    /** Create a new date from a string.
        @memberof ChineseCalendar
        @param dateString {string} String representing a Chinese date
        @return {CDate} The new date.
        @throws Error if an invalid date. */
    fromString: function(dateString) {
        var match = dateString.match(DATE_REGEXP);

        var year = this._validateYear(+match[1]);

        var month = +match[2];
        var isIntercalary = !!match[3];
        var monthIndex = this.toMonthIndex(year, month, isIntercalary);

        var day = +match[4];

        return this.newDate(year, monthIndex, day);
    },

    /** Add period(s) to a date.
        Cater for no year zero.
        @memberof ChineseCalendar
        @param date {CDate} The starting date.
        @param offset {number} The number of periods to adjust by.
        @param period {string} One of 'y' for year, 'm' for month, 'w' for week, 'd' for day.
        @return {CDate} The updated date.
        @throws Error if a different calendar used. */
    add: function(date, offset, period) {
        var year = date.year();
        var monthIndex = date.month();
        var isIntercalary = this.isIntercalaryMonth(year, monthIndex);
        var month = this.toChineseMonth(year, monthIndex);

        var cdate = Object.getPrototypeOf(ChineseCalendar.prototype)
            .add.call(this, date, offset, period);

        if (period === 'y') {
            // Resync month
            var resultYear = cdate.year();
            var resultMonthIndex = cdate.month();

            // Using the fact the month index of an intercalary month
            // equals its month number:
            var resultCanBeIntercalaryMonth =
                this.isIntercalaryMonth(resultYear, month);

            var correctedMonthIndex =
                (isIntercalary && resultCanBeIntercalaryMonth) ?
                this.toMonthIndex(resultYear, month, true) :
                this.toMonthIndex(resultYear, month, false);

            if (correctedMonthIndex !== resultMonthIndex) {
                cdate.month(correctedMonthIndex);
            }
        }

        return cdate;
    },
});

// Used by ChineseCalendar.prototype.fromString
var DATE_REGEXP = /^\s*(-?\d\d\d\d|\d\d)[-/](\d?\d)([iI]?)[-/](\d?\d)/m;
var MONTH_NUMBER_REGEXP = /^\d?\d[iI]?/m;
var MONTH_NAME_REGEXP = /^闰?十?[一二三四五六七八九]?月/m;
var MONTH_SHORT_NAME_REGEXP = /^闰?十?[一二三四五六七八九]?/m;

// Chinese calendar implementation
main.calendars.chinese = ChineseCalendar;

// Chinese calendar tables from year 1888 to 2111
//
// Source:
// https://github.com/isee15/Lunar-Solar-Calendar-Converter.git

// Table of intercalary months and days per month from year 1888 to 2111
//
// bit (12 - i):        days in the i^th month
//                      (= 0 if i^th lunar month has 29 days)
//                      (= 1 if i^th lunar month has 30 days)
//                      (first month in lunar year is i = 0)
// bits (13,14,15,16):  intercalary month
//                      (= 0 if lunar year has no intercalary month)
var LUNAR_MONTH_DAYS = [1887, 0x1694, 0x16aa, 0x4ad5,
    0xab6, 0xc4b7, 0x4ae, 0xa56, 0xb52a, 0x1d2a, 0xd54, 0x75aa, 0x156a,
    0x1096d, 0x95c, 0x14ae, 0xaa4d, 0x1a4c, 0x1b2a, 0x8d55, 0xad4,
    0x135a, 0x495d, 0x95c, 0xd49b, 0x149a, 0x1a4a, 0xbaa5, 0x16a8,
    0x1ad4, 0x52da, 0x12b6, 0xe937, 0x92e, 0x1496, 0xb64b, 0xd4a,
    0xda8, 0x95b5, 0x56c, 0x12ae, 0x492f, 0x92e, 0xcc96, 0x1a94,
    0x1d4a, 0xada9, 0xb5a, 0x56c, 0x726e, 0x125c, 0xf92d, 0x192a,
    0x1a94, 0xdb4a, 0x16aa, 0xad4, 0x955b, 0x4ba, 0x125a, 0x592b,
    0x152a, 0xf695, 0xd94, 0x16aa, 0xaab5, 0x9b4, 0x14b6, 0x6a57,
    0xa56, 0x1152a, 0x1d2a, 0xd54, 0xd5aa, 0x156a, 0x96c, 0x94ae,
    0x14ae, 0xa4c, 0x7d26, 0x1b2a, 0xeb55, 0xad4, 0x12da, 0xa95d,
    0x95a, 0x149a, 0x9a4d, 0x1a4a, 0x11aa5, 0x16a8, 0x16d4, 0xd2da,
    0x12b6, 0x936, 0x9497, 0x1496, 0x1564b, 0xd4a, 0xda8, 0xd5b4,
    0x156c, 0x12ae, 0xa92f, 0x92e, 0xc96, 0x6d4a, 0x1d4a, 0x10d65,
    0xb58, 0x156c, 0xb26d, 0x125c, 0x192c, 0x9a95, 0x1a94, 0x1b4a,
    0x4b55, 0xad4, 0xf55b, 0x4ba, 0x125a, 0xb92b, 0x152a, 0x1694,
    0x96aa, 0x15aa, 0x12ab5, 0x974, 0x14b6, 0xca57, 0xa56, 0x1526,
    0x8e95, 0xd54, 0x15aa, 0x49b5, 0x96c, 0xd4ae, 0x149c, 0x1a4c,
    0xbd26, 0x1aa6, 0xb54, 0x6d6a, 0x12da, 0x1695d, 0x95a, 0x149a,
    0xda4b, 0x1a4a, 0x1aa4, 0xbb54, 0x16b4, 0xada, 0x495b, 0x936,
    0xf497, 0x1496, 0x154a, 0xb6a5, 0xda4, 0x15b4, 0x6ab6, 0x126e,
    0x1092f, 0x92e, 0xc96, 0xcd4a, 0x1d4a, 0xd64, 0x956c, 0x155c,
    0x125c, 0x792e, 0x192c, 0xfa95, 0x1a94, 0x1b4a, 0xab55, 0xad4,
    0x14da, 0x8a5d, 0xa5a, 0x1152b, 0x152a, 0x1694, 0xd6aa, 0x15aa,
    0xab4, 0x94ba, 0x14b6, 0xa56, 0x7527, 0xd26, 0xee53, 0xd54, 0x15aa,
    0xa9b5, 0x96c, 0x14ae, 0x8a4e, 0x1a4c, 0x11d26, 0x1aa4, 0x1b54,
    0xcd6a, 0xada, 0x95c, 0x949d, 0x149a, 0x1a2a, 0x5b25, 0x1aa4,
    0xfb52, 0x16b4, 0xaba, 0xa95b, 0x936, 0x1496, 0x9a4b, 0x154a,
    0x136a5, 0xda4, 0x15ac];

// Table of Chinese New Years from year 1888 to 2111
// 
// bits (0 to 4):   solar day
// bits (5 to 8):   solar month
// bits (9 to 20):  solar year
var CHINESE_NEW_YEAR = [1887, 0xec04c, 0xec23f, 0xec435, 0xec649,
    0xec83e, 0xeca51, 0xecc46, 0xece3a, 0xed04d, 0xed242, 0xed436,
    0xed64a, 0xed83f, 0xeda53, 0xedc48, 0xede3d, 0xee050, 0xee244,
    0xee439, 0xee64d, 0xee842, 0xeea36, 0xeec4a, 0xeee3e, 0xef052,
    0xef246, 0xef43a, 0xef64e, 0xef843, 0xefa37, 0xefc4b, 0xefe41,
    0xf0054, 0xf0248, 0xf043c, 0xf0650, 0xf0845, 0xf0a38, 0xf0c4d,
    0xf0e42, 0xf1037, 0xf124a, 0xf143e, 0xf1651, 0xf1846, 0xf1a3a,
    0xf1c4e, 0xf1e44, 0xf2038, 0xf224b, 0xf243f, 0xf2653, 0xf2848,
    0xf2a3b, 0xf2c4f, 0xf2e45, 0xf3039, 0xf324d, 0xf3442, 0xf3636,
    0xf384a, 0xf3a3d, 0xf3c51, 0xf3e46, 0xf403b, 0xf424e, 0xf4443,
    0xf4638, 0xf484c, 0xf4a3f, 0xf4c52, 0xf4e48, 0xf503c, 0xf524f,
    0xf5445, 0xf5639, 0xf584d, 0xf5a42, 0xf5c35, 0xf5e49, 0xf603e,
    0xf6251, 0xf6446, 0xf663b, 0xf684f, 0xf6a43, 0xf6c37, 0xf6e4b,
    0xf703f, 0xf7252, 0xf7447, 0xf763c, 0xf7850, 0xf7a45, 0xf7c39,
    0xf7e4d, 0xf8042, 0xf8254, 0xf8449, 0xf863d, 0xf8851, 0xf8a46,
    0xf8c3b, 0xf8e4f, 0xf9044, 0xf9237, 0xf944a, 0xf963f, 0xf9853,
    0xf9a47, 0xf9c3c, 0xf9e50, 0xfa045, 0xfa238, 0xfa44c, 0xfa641,
    0xfa836, 0xfaa49, 0xfac3d, 0xfae52, 0xfb047, 0xfb23a, 0xfb44e,
    0xfb643, 0xfb837, 0xfba4a, 0xfbc3f, 0xfbe53, 0xfc048, 0xfc23c,
    0xfc450, 0xfc645, 0xfc839, 0xfca4c, 0xfcc41, 0xfce36, 0xfd04a,
    0xfd23d, 0xfd451, 0xfd646, 0xfd83a, 0xfda4d, 0xfdc43, 0xfde37,
    0xfe04b, 0xfe23f, 0xfe453, 0xfe648, 0xfe83c, 0xfea4f, 0xfec44,
    0xfee38, 0xff04c, 0xff241, 0xff436, 0xff64a, 0xff83e, 0xffa51,
    0xffc46, 0xffe3a, 0x10004e, 0x100242, 0x100437, 0x10064b, 0x100841,
    0x100a53, 0x100c48, 0x100e3c, 0x10104f, 0x101244, 0x101438,
    0x10164c, 0x101842, 0x101a35, 0x101c49, 0x101e3d, 0x102051,
    0x102245, 0x10243a, 0x10264e, 0x102843, 0x102a37, 0x102c4b,
    0x102e3f, 0x103053, 0x103247, 0x10343b, 0x10364f, 0x103845,
    0x103a38, 0x103c4c, 0x103e42, 0x104036, 0x104249, 0x10443d,
    0x104651, 0x104846, 0x104a3a, 0x104c4e, 0x104e43, 0x105038,
    0x10524a, 0x10543e, 0x105652, 0x105847, 0x105a3b, 0x105c4f,
    0x105e45, 0x106039, 0x10624c, 0x106441, 0x106635, 0x106849,
    0x106a3d, 0x106c51, 0x106e47, 0x10703c, 0x10724f, 0x107444,
    0x107638, 0x10784c, 0x107a3f, 0x107c53, 0x107e48];

function toLunar(yearOrDate, monthOrResult, day, result) {
    var solarDate;
    var lunarDate;

    if(typeof yearOrDate === 'object') {
        solarDate = yearOrDate;
        lunarDate = monthOrResult || {};

    } else {
        var isValidYear = (typeof yearOrDate === 'number') &&
            (yearOrDate >= 1888) && (yearOrDate <= 2111);
        if(!isValidYear)
            throw new Error("Solar year outside range 1888-2111");

        var isValidMonth = (typeof monthOrResult === 'number') &&
            (monthOrResult >= 1) && (monthOrResult <= 12);
        if(!isValidMonth)
            throw new Error("Solar month outside range 1 - 12");

        var isValidDay = (typeof day === 'number') && (day >= 1) && (day <= 31);
        if(!isValidDay)
            throw new Error("Solar day outside range 1 - 31");

        solarDate = {
            year: yearOrDate,
            month: monthOrResult,
            day: day,
        };
        lunarDate = result || {};
    }

    // Compute Chinese new year and lunar year
    var chineseNewYearPackedDate =
        CHINESE_NEW_YEAR[solarDate.year - CHINESE_NEW_YEAR[0]];

    var packedDate = (solarDate.year << 9) | (solarDate.month << 5)
        | solarDate.day;

    lunarDate.year = (packedDate >= chineseNewYearPackedDate) ?
        solarDate.year :
        solarDate.year - 1;

    chineseNewYearPackedDate =
        CHINESE_NEW_YEAR[lunarDate.year - CHINESE_NEW_YEAR[0]];

    var y = (chineseNewYearPackedDate >> 9) & 0xFFF;
    var m = (chineseNewYearPackedDate >> 5) & 0x0F;
    var d = chineseNewYearPackedDate & 0x1F;

    // Compute days from new year
    var daysFromNewYear;

    var chineseNewYearJSDate = new Date(y, m -1, d);
    var jsDate = new Date(solarDate.year, solarDate.month - 1, solarDate.day);

    daysFromNewYear = Math.round(
        (jsDate - chineseNewYearJSDate) / (24 * 3600 * 1000));

    // Compute lunar month and day
    var monthDaysTable = LUNAR_MONTH_DAYS[lunarDate.year - LUNAR_MONTH_DAYS[0]];

    var i;
    for(i = 0; i < 13; i++) {
        var daysInMonth = (monthDaysTable & (1 << (12 - i))) ? 30 : 29;

        if (daysFromNewYear < daysInMonth) {
            break;
        }

        daysFromNewYear -= daysInMonth;
    }

    var intercalaryMonth = monthDaysTable >> 13;
    if (!intercalaryMonth || i < intercalaryMonth) {
        lunarDate.isIntercalary = false;
        lunarDate.month = 1 + i;
    } else if (i === intercalaryMonth) {
        lunarDate.isIntercalary = true;
        lunarDate.month = i;
    } else {
        lunarDate.isIntercalary = false;
        lunarDate.month = i;
    }

    lunarDate.day = 1 + daysFromNewYear;

    return lunarDate;
}

function toSolar(yearOrDate, monthOrResult, day, isIntercalaryOrResult, result) {
    var solarDate;
    var lunarDate;

    if(typeof yearOrDate === 'object') {
        lunarDate = yearOrDate;
        solarDate = monthOrResult || {};

    } else {
        var isValidYear = (typeof yearOrDate === 'number') &&
            (yearOrDate >= 1888) && (yearOrDate <= 2111);
        if(!isValidYear)
            throw new Error("Lunar year outside range 1888-2111");

        var isValidMonth = (typeof monthOrResult === 'number') &&
            (monthOrResult >= 1) && (monthOrResult <= 12);
        if(!isValidMonth)
            throw new Error("Lunar month outside range 1 - 12");

        var isValidDay = (typeof day === 'number') && (day >= 1) && (day <= 30);
        if(!isValidDay)
            throw new Error("Lunar day outside range 1 - 30");

        var isIntercalary;
        if(typeof isIntercalaryOrResult === 'object') {
            isIntercalary = false;
            solarDate = isIntercalaryOrResult;
        } else {
            isIntercalary = !!isIntercalaryOrResult;
            solarDate = result || {};
        }

        lunarDate = {
            year: yearOrDate,
            month: monthOrResult,
            day: day,
            isIntercalary: isIntercalary,
        };
    }

    // Compute days from new year
    var daysFromNewYear;

    daysFromNewYear = lunarDate.day - 1;

    var monthDaysTable = LUNAR_MONTH_DAYS[lunarDate.year - LUNAR_MONTH_DAYS[0]];
    var intercalaryMonth = monthDaysTable >> 13;

    var monthsFromNewYear;
    if (!intercalaryMonth) {
        monthsFromNewYear = lunarDate.month - 1;
    } else if (lunarDate.month > intercalaryMonth) {
        monthsFromNewYear = lunarDate.month;
    } else if (lunarDate.isIntercalary) {
        monthsFromNewYear = lunarDate.month;
    } else {
        monthsFromNewYear = lunarDate.month - 1;
    }

    for(var i = 0; i < monthsFromNewYear; i++) {
        var daysInMonth = (monthDaysTable & (1 << (12 - i))) ? 30 : 29;
        daysFromNewYear += daysInMonth;
    }

    // Compute Chinese new year
    var packedDate = CHINESE_NEW_YEAR[lunarDate.year - CHINESE_NEW_YEAR[0]];

    var y = (packedDate >> 9) & 0xFFF;
    var m = (packedDate >> 5) & 0x0F;
    var d = packedDate & 0x1F;

    // Compute solar date
    var jsDate = new Date(y, m - 1, d + daysFromNewYear);

    solarDate.year = jsDate.getFullYear();
    solarDate.month = 1 + jsDate.getMonth();
    solarDate.day = jsDate.getDate();

    return solarDate;
}


},{"../main":1033,"object-assign":446}],1020:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Coptic calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) February 2010.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Coptic calendar.
    See <a href="http://en.wikipedia.org/wiki/Coptic_calendar">http://en.wikipedia.org/wiki/Coptic_calendar</a>.
    See also Calendrical Calculations: The Millennium Edition
    (<a href="http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml">http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml</a>).
    @class CopticCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function CopticCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

CopticCalendar.prototype = new main.baseCalendar;

assign(CopticCalendar.prototype, {
    /** The calendar name.
        @memberof CopticCalendar */
    name: 'Coptic',
    /** Julian date of start of Coptic epoch: 29 August 284 CE (Gregorian).
        @memberof CopticCalendar */
    jdEpoch: 1825029.5,
    /** Days per month in a common year.
        @memberof CopticCalendar */
    daysPerMonth: [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 5],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof CopticCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof CopticCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof CopticCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof CopticCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof CopticCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Coptic',
            epochs: ['BAM', 'AM'],
            monthNames: ['Thout', 'Paopi', 'Hathor', 'Koiak', 'Tobi', 'Meshir',
            'Paremhat', 'Paremoude', 'Pashons', 'Paoni', 'Epip', 'Mesori', 'Pi Kogi Enavot'],
            monthNamesShort: ['Tho', 'Pao', 'Hath', 'Koi', 'Tob', 'Mesh',
            'Pat', 'Pad', 'Pash', 'Pao', 'Epi', 'Meso', 'PiK'],
            dayNames: ['Tkyriaka', 'Pesnau', 'Pshoment', 'Peftoou', 'Ptiou', 'Psoou', 'Psabbaton'],
            dayNamesShort: ['Tky', 'Pes', 'Psh', 'Pef', 'Pti', 'Pso', 'Psa'],
            dayNamesMin: ['Tk', 'Pes', 'Psh', 'Pef', 'Pt', 'Pso', 'Psa'],
            digits: null,
            dateFormat: 'dd/mm/yyyy',
            firstDay: 0,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof CopticCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = date.year() + (date.year() < 0 ? 1 : 0); // No year zero
        return year % 4 === 3 || year % 4 === -1;
    },

    /** Retrieve the number of months in a year.
        @memberof CopticCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay,
            main.local.invalidYear || main.regionalOptions[''].invalidYear);
        return 13;
    },

    /** Determine the week of the year for a date.
        @memberof CopticCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number) the month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof CopticCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 13 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof CopticCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param month {number} The month to examine.
        @param day {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof CopticCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number) the month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year();
        if (year < 0) { year++; } // No year zero
        return date.day() + (date.month() - 1) * 30 +
            (year - 1) * 365 + Math.floor(year / 4) + this.jdEpoch - 1;
    },

    /** Create a new date from a Julian date.
        @memberof CopticCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        var c = Math.floor(jd) + 0.5 - this.jdEpoch;
        var year = Math.floor((c - Math.floor((c + 366) / 1461)) / 365) + 1;
        if (year <= 0) { year--; } // No year zero
        c = Math.floor(jd) + 0.5 - this.newDate(year, 1, 1).toJD();
        var month = Math.floor(c / 30) + 1;
        var day = c - (month - 1) * 30 + 1;
        return this.newDate(year, month, day);
    }
});

// Coptic calendar implementation
main.calendars.coptic = CopticCalendar;


},{"../main":1033,"object-assign":446}],1021:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Discworld calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) January 2016.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Discworld calendar - Unseen University version.
    See also <a href="http://wiki.lspace.org/mediawiki/Discworld_calendar">http://wiki.lspace.org/mediawiki/Discworld_calendar</a>
    and <a href="http://discworld.wikia.com/wiki/Discworld_calendar">http://discworld.wikia.com/wiki/Discworld_calendar</a>.
    @class DiscworldCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function DiscworldCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

DiscworldCalendar.prototype = new main.baseCalendar;

assign(DiscworldCalendar.prototype, {
    /** The calendar name.
        @memberof DiscworldCalendar */
    name: 'Discworld',
    /** Julian date of start of Discworld epoch: 1 January 0001 CE.
        @memberof DiscworldCalendar */
    jdEpoch: 1721425.5,
    /** Days per month in a common year.
        @memberof DiscworldCalendar */
    daysPerMonth: [16, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof DiscworldCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof DiscworldCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof DiscworldCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof DiscworldCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof DiscworldCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Discworld',
            epochs: ['BUC', 'UC'],
            monthNames: ['Ick', 'Offle', 'February', 'March', 'April', 'May', 'June',
            'Grune', 'August', 'Spune', 'Sektober', 'Ember', 'December'],
            monthNamesShort: ['Ick', 'Off', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Gru', 'Aug', 'Spu', 'Sek', 'Emb', 'Dec'],
            dayNames: ['Sunday', 'Octeday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            dayNamesShort: ['Sun', 'Oct', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            dayNamesMin: ['Su', 'Oc', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
            digits: null,
            dateFormat: 'yyyy/mm/dd',
            firstDay: 2,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return false;
    },

    /** Retrieve the number of months in a year.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return 13;
    },

    /** Retrieve the number of days in a year.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return 400;
    },

    /** Determine the week of the year for a date.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 8) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1];
    },

    /** Retrieve the number of days in a week.
        @memberof DiscworldCalendar
        @return {number} The number of days. */
    daysInWeek: function() {
        return 8;
    },

    /** Retrieve the day of the week for a date.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The day of the week: 0 to number of days - 1.
        @throws Error if an invalid date or a different calendar used. */
    dayOfWeek: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        return (date.day() + 1) % 8;
    },

    /** Determine whether this date is a week day.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        var dow = this.dayOfWeek(year, month, day);
        return (dow >= 2 && dow <= 6);
    },

    /** Retrieve additional information about a date.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {object} Additional information - contents depends on calendar.
        @throws Error if an invalid date or a different calendar used. */
    extraInfo: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        return {century: centuries[Math.floor((date.year() - 1) / 100) + 1] || ''};
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof DiscworldCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year() + (date.year() < 0 ? 1 : 0);
        month = date.month();
        day = date.day();
        return day + (month > 1 ? 16 : 0) + (month > 2 ? (month - 2) * 32 : 0) +
            (year - 1) * 400 + this.jdEpoch - 1;
    },

    /** Create a new date from a Julian date.
        @memberof DiscworldCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        jd = Math.floor(jd + 0.5) - Math.floor(this.jdEpoch) - 1;
        var year = Math.floor(jd / 400) + 1;
        jd -= (year - 1) * 400;
        jd += (jd > 15 ? 16 : 0);
        var month = Math.floor(jd / 32) + 1;
        var day = jd - (month - 1) * 32 + 1;
        return this.newDate(year <= 0 ? year - 1 : year, month, day);
    }
});

// Names of the centuries
var centuries = {
    20: 'Fruitbat',
    21: 'Anchovy'
};

// Discworld calendar implementation
main.calendars.discworld = DiscworldCalendar;


},{"../main":1033,"object-assign":446}],1022:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Ethiopian calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) February 2010.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Ethiopian calendar.
    See <a href="http://en.wikipedia.org/wiki/Ethiopian_calendar">http://en.wikipedia.org/wiki/Ethiopian_calendar</a>.
    See also Calendrical Calculations: The Millennium Edition
    (<a href="http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml">http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml</a>).
    @class EthiopianCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function EthiopianCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

EthiopianCalendar.prototype = new main.baseCalendar;

assign(EthiopianCalendar.prototype, {
    /** The calendar name.
        @memberof EthiopianCalendar */
    name: 'Ethiopian',
    /** Julian date of start of Ethiopian epoch: 27 August 8 CE (Gregorian).
        @memberof EthiopianCalendar */
    jdEpoch: 1724220.5,
    /** Days per month in a common year.
        @memberof EthiopianCalendar */
    daysPerMonth: [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 5],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof EthiopianCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof EthiopianCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof EthiopianCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof EthiopianCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof EthiopianCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Ethiopian',
            epochs: ['BEE', 'EE'],
            monthNames: ['Meskerem', 'Tikemet', 'Hidar', 'Tahesas', 'Tir', 'Yekatit',
            'Megabit', 'Miazia', 'Genbot', 'Sene', 'Hamle', 'Nehase', 'Pagume'],
            monthNamesShort: ['Mes', 'Tik', 'Hid', 'Tah', 'Tir', 'Yek',
            'Meg', 'Mia', 'Gen', 'Sen', 'Ham', 'Neh', 'Pag'],
            dayNames: ['Ehud', 'Segno', 'Maksegno', 'Irob', 'Hamus', 'Arb', 'Kidame'],
            dayNamesShort: ['Ehu', 'Seg', 'Mak', 'Iro', 'Ham', 'Arb', 'Kid'],
            dayNamesMin: ['Eh', 'Se', 'Ma', 'Ir', 'Ha', 'Ar', 'Ki'],
            digits: null,
            dateFormat: 'dd/mm/yyyy',
            firstDay: 0,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof EthiopianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = date.year() + (date.year() < 0 ? 1 : 0); // No year zero
        return year % 4 === 3 || year % 4 === -1;
    },

    /** Retrieve the number of months in a year.
        @memberof EthiopianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay,
            main.local.invalidYear || main.regionalOptions[''].invalidYear);
        return 13;
    },

    /** Determine the week of the year for a date.
        @memberof EthiopianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof EthiopianCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 13 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof EthiopianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof EthiopianCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year();
        if (year < 0) { year++; } // No year zero
        return date.day() + (date.month() - 1) * 30 +
            (year - 1) * 365 + Math.floor(year / 4) + this.jdEpoch - 1;
    },

    /** Create a new date from a Julian date.
        @memberof EthiopianCalendar
        @param jd {number} the Julian date to convert.
        @return {CDate} the equivalent date. */
    fromJD: function(jd) {
        var c = Math.floor(jd) + 0.5 - this.jdEpoch;
        var year = Math.floor((c - Math.floor((c + 366) / 1461)) / 365) + 1;
        if (year <= 0) { year--; } // No year zero
        c = Math.floor(jd) + 0.5 - this.newDate(year, 1, 1).toJD();
        var month = Math.floor(c / 30) + 1;
        var day = c - (month - 1) * 30 + 1;
        return this.newDate(year, month, day);
    }
});

// Ethiopian calendar implementation
main.calendars.ethiopian = EthiopianCalendar;


},{"../main":1033,"object-assign":446}],1023:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Hebrew calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Hebrew civil calendar.
    Based on code from <a href="http://www.fourmilab.ch/documents/calendar/">http://www.fourmilab.ch/documents/calendar/</a>.
    See also <a href="http://en.wikipedia.org/wiki/Hebrew_calendar">http://en.wikipedia.org/wiki/Hebrew_calendar</a>.
    @class HebrewCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function HebrewCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

HebrewCalendar.prototype = new main.baseCalendar;

assign(HebrewCalendar.prototype, {
    /** The calendar name.
        @memberof HebrewCalendar */
    name: 'Hebrew',
    /** Julian date of start of Hebrew epoch: 7 October 3761 BCE.
        @memberof HebrewCalendar */
    jdEpoch: 347995.5,
    /** Days per month in a common year.
        @memberof HebrewCalendar */
    daysPerMonth: [30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 29],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof HebrewCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof HebrewCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof HebrewCalendar */
    firstMonth: 7,
    /** The minimum day number.
        @memberof HebrewCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof HebrewCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Hebrew',
            epochs: ['BAM', 'AM'],
            monthNames: ['Nisan', 'Iyar', 'Sivan', 'Tammuz', 'Av', 'Elul',
            'Tishrei', 'Cheshvan', 'Kislev', 'Tevet', 'Shevat', 'Adar', 'Adar II'],
            monthNamesShort: ['Nis', 'Iya', 'Siv', 'Tam', 'Av', 'Elu', 'Tis', 'Che', 'Kis', 'Tev', 'She', 'Ada', 'Ad2'],
            dayNames: ['Yom Rishon', 'Yom Sheni', 'Yom Shlishi', 'Yom Revi\'i', 'Yom Chamishi', 'Yom Shishi', 'Yom Shabbat'],
            dayNamesShort: ['Ris', 'She', 'Shl', 'Rev', 'Cha', 'Shi', 'Sha'],
            dayNamesMin: ['Ri','She','Shl','Re','Ch','Shi','Sha'],
            digits: null,
            dateFormat: 'dd/mm/yyyy',
            firstDay: 0,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return this._leapYear(date.year());
    },

    /** Determine whether this date is in a leap year.
        @memberof HebrewCalendar
        @private
        @param year {number} The year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    _leapYear: function(year) {
        year = (year < 0 ? year + 1 : year);
        return mod(year * 7 + 1, 19) < 7;
    },

    /** Retrieve the number of months in a year.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return this._leapYear(year.year ? year.year() : year) ? 13 : 12;
    },

    /** Determine the week of the year for a date.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a year.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        year = date.year();
        return this.toJD((year === -1 ? +1 : year + 1), 7, 1) - this.toJD(year, 7, 1);
    },

    /** Retrieve the number of days in a month.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        if (year.year) {
            month = year.month();
            year = year.year();
        }
        this._validate(year, month, this.minDay, main.local.invalidMonth);
        return (month === 12 && this.leapYear(year) ? 30 : // Adar I
                (month === 8 && mod(this.daysInYear(year), 10) === 5 ? 30 : // Cheshvan in shlemah year
                (month === 9 && mod(this.daysInYear(year), 10) === 3 ? 29 : // Kislev in chaserah year
                this.daysPerMonth[month - 1])));
    },

    /** Determine whether this date is a week day.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return this.dayOfWeek(year, month, day) !== 6;
    },

    /** Retrieve additional information about a date - year type.
        @memberof HebrewCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {object} Additional information - contents depends on calendar.
        @throws Error if an invalid date or a different calendar used. */
    extraInfo: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        return {yearType: (this.leapYear(date) ? 'embolismic' : 'common') + ' ' +
            ['deficient', 'regular', 'complete'][this.daysInYear(date) % 10 - 3]};
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof HebrewCalendar
        @param year {CDate)|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year();
        month = date.month();
        day = date.day();
        var adjYear = (year <= 0 ? year + 1 : year);
        var jd = this.jdEpoch + this._delay1(adjYear) +
            this._delay2(adjYear) + day + 1;
        if (month < 7) {
            for (var m = 7; m <= this.monthsInYear(year); m++) {
                jd += this.daysInMonth(year, m);
            }
            for (var m = 1; m < month; m++) {
                jd += this.daysInMonth(year, m);
            }
        }
        else {
            for (var m = 7; m < month; m++) {
                jd += this.daysInMonth(year, m);
            }
        }
        return jd;
    },

    /** Test for delay of start of new year and to avoid
        Sunday, Wednesday, or Friday as start of the new year.
        @memberof HebrewCalendar
        @private
        @param year {number} The year to examine.
        @return {number} The days to offset by. */
    _delay1: function(year) {
        var months = Math.floor((235 * year - 234) / 19);
        var parts = 12084 + 13753 * months;
        var day = months * 29 + Math.floor(parts / 25920);
        if (mod(3 * (day + 1), 7) < 3) {
            day++;
        }
        return day;
    },

    /** Check for delay in start of new year due to length of adjacent years.
        @memberof HebrewCalendar
        @private
        @param year {number} The year to examine.
        @return {number} The days to offset by. */
    _delay2: function(year) {
        var last = this._delay1(year - 1);
        var present = this._delay1(year);
        var next = this._delay1(year + 1);
        return ((next - present) === 356 ? 2 : ((present - last) === 382 ? 1 : 0));
    },

    /** Create a new date from a Julian date.
        @memberof HebrewCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        jd = Math.floor(jd) + 0.5;
        var year = Math.floor(((jd - this.jdEpoch) * 98496.0) / 35975351.0) - 1;
        while (jd >= this.toJD((year === -1 ? +1 : year + 1), 7, 1)) {
            year++;
        }
        var month = (jd < this.toJD(year, 1, 1)) ? 7 : 1;
        while (jd > this.toJD(year, month, this.daysInMonth(year, month))) {
            month++;
        }
        var day = jd - this.toJD(year, month, 1) + 1;
        return this.newDate(year, month, day);
    }
});

// Modulus function which works for non-integers.
function mod(a, b) {
    return a - (b * Math.floor(a / b));
}

// Hebrew calendar implementation
main.calendars.hebrew = HebrewCalendar;


},{"../main":1033,"object-assign":446}],1024:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Islamic calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Islamic or '16 civil' calendar.
    Based on code from <a href="http://www.iranchamber.com/calendar/converter/iranian_calendar_converter.php">http://www.iranchamber.com/calendar/converter/iranian_calendar_converter.php</a>.
    See also <a href="http://en.wikipedia.org/wiki/Islamic_calendar">http://en.wikipedia.org/wiki/Islamic_calendar</a>.
    @class IslamicCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function IslamicCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

IslamicCalendar.prototype = new main.baseCalendar;

assign(IslamicCalendar.prototype, {
    /** The calendar name.
        @memberof IslamicCalendar */
    name: 'Islamic',
    /** Julian date of start of Islamic epoch: 16 July 622 CE.
        @memberof IslamicCalendar */
    jdEpoch: 1948439.5,
    /** Days per month in a common year.
        @memberof IslamicCalendar */
    daysPerMonth: [30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof IslamicCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof IslamicCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof IslamicCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof IslamicCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof IslamicCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Islamic',
            epochs: ['BH', 'AH'],
            monthNames: ['Muharram', 'Safar', 'Rabi\' al-awwal', 'Rabi\' al-thani', 'Jumada al-awwal', 'Jumada al-thani',
            'Rajab', 'Sha\'aban', 'Ramadan', 'Shawwal', 'Dhu al-Qi\'dah', 'Dhu al-Hijjah'],
            monthNamesShort: ['Muh', 'Saf', 'Rab1', 'Rab2', 'Jum1', 'Jum2', 'Raj', 'Sha\'', 'Ram', 'Shaw', 'DhuQ', 'DhuH'],
            dayNames: ['Yawm al-ahad', 'Yawm al-ithnayn', 'Yawm ath-thulaathaa\'',
            'Yawm al-arbi\'aa\'', 'Yawm al-khamīs', 'Yawm al-jum\'a', 'Yawm as-sabt'],
            dayNamesShort: ['Aha', 'Ith', 'Thu', 'Arb', 'Kha', 'Jum', 'Sab'],
            dayNamesMin: ['Ah','It','Th','Ar','Kh','Ju','Sa'],
            digits: null,
            dateFormat: 'yyyy/mm/dd',
            firstDay: 6,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof IslamicCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return (date.year() * 11 + 14) % 30 < 11;
    },

    /** Determine the week of the year for a date.
        @memberof IslamicCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a year.
        @memberof IslamicCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function(year) {
        return (this.leapYear(year) ? 355 : 354);
    },

    /** Retrieve the number of days in a month.
        @memberof IslamicCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 12 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof IslamicCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return this.dayOfWeek(year, month, day) !== 5;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof IslamicCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year();
        month = date.month();
        day = date.day();
        year = (year <= 0 ? year + 1 : year);
        return day + Math.ceil(29.5 * (month - 1)) + (year - 1) * 354 +
            Math.floor((3 + (11 * year)) / 30) + this.jdEpoch - 1;
    },

    /** Create a new date from a Julian date.
        @memberof IslamicCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        jd = Math.floor(jd) + 0.5;
        var year = Math.floor((30 * (jd - this.jdEpoch) + 10646) / 10631);
        year = (year <= 0 ? year - 1 : year);
        var month = Math.min(12, Math.ceil((jd - 29 - this.toJD(year, 1, 1)) / 29.5) + 1);
        var day = jd - this.toJD(year, month, 1) + 1;
        return this.newDate(year, month, day);
    }
});

// Islamic (16 civil) calendar implementation
main.calendars.islamic = IslamicCalendar;


},{"../main":1033,"object-assign":446}],1025:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Julian calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Julian calendar.
    Based on code from <a href="http://www.fourmilab.ch/documents/calendar/">http://www.fourmilab.ch/documents/calendar/</a>.
    See also <a href="http://en.wikipedia.org/wiki/Julian_calendar">http://en.wikipedia.org/wiki/Julian_calendar</a>.
    @class JulianCalendar
    @augments BaseCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function JulianCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

JulianCalendar.prototype = new main.baseCalendar;

assign(JulianCalendar.prototype, {
    /** The calendar name.
        @memberof JulianCalendar */
    name: 'Julian',
    /** Julian date of start of Julian epoch: 1 January 0001 AD = 30 December 0001 BCE.
        @memberof JulianCalendar */
    jdEpoch: 1721423.5,
    /** Days per month in a common year.
        @memberof JulianCalendar */
    daysPerMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof JulianCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof JulianCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof JulianCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof JulianCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof JulianCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Julian',
            epochs: ['BC', 'AD'],
            monthNames: ['January', 'February', 'March', 'April', 'May', 'June',
            'July', 'August', 'September', 'October', 'November', 'December'],
            monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
            dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
            digits: null,
            dateFormat: 'mm/dd/yyyy',
            firstDay: 0,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof JulianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = (date.year() < 0 ? date.year() + 1 : date.year()); // No year zero
        return (year % 4) === 0;
    },

    /** Determine the week of the year for a date - ISO 8601.
        @memberof JulianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Thursday of this week starting on Monday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(4 - (checkDate.dayOfWeek() || 7), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof JulianCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 2 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof JulianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} True if a week day, false if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof JulianCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year();
        month = date.month();
        day = date.day();
        if (year < 0) { year++; } // No year zero
        // Jean Meeus algorithm, "Astronomical Algorithms", 1991
        if (month <= 2) {
            year--;
            month += 12;
        }
        return Math.floor(365.25 * (year + 4716)) +
            Math.floor(30.6001 * (month + 1)) + day - 1524.5;
    },

    /** Create a new date from a Julian date.
        @memberof JulianCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        // Jean Meeus algorithm, "Astronomical Algorithms", 1991
        var a = Math.floor(jd + 0.5);
        var b = a + 1524;
        var c = Math.floor((b - 122.1) / 365.25);
        var d = Math.floor(365.25 * c);
        var e = Math.floor((b - d) / 30.6001);
        var month = e - Math.floor(e < 14 ? 1 : 13);
        var year = c - Math.floor(month > 2 ? 4716 : 4715);
        var day = b - d - Math.floor(30.6001 * e);
        if (year <= 0) { year--; } // No year zero
        return this.newDate(year, month, day);
    }
});

// Julian calendar implementation
main.calendars.julian = JulianCalendar;


},{"../main":1033,"object-assign":446}],1026:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Mayan calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Mayan Long Count calendar.
    See also <a href="http://en.wikipedia.org/wiki/Mayan_calendar">http://en.wikipedia.org/wiki/Mayan_calendar</a>.
    @class MayanCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function MayanCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

MayanCalendar.prototype = new main.baseCalendar;

assign(MayanCalendar.prototype, {
    /** The calendar name.
        @memberof MayanCalendar */
    name: 'Mayan',
    /** Julian date of start of Mayan epoch: 11 August 3114 BCE.
        @memberof MayanCalendar */
    jdEpoch: 584282.5,
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof MayanCalendar */
    hasYearZero: true,
    /** The minimum month number.
        @memberof MayanCalendar */
    minMonth: 0,
    /** The first month in the year.
        @memberof MayanCalendar */
    firstMonth: 0,
    /** The minimum day number.
        @memberof MayanCalendar */
    minDay: 0,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof MayanCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left.
        @property haabMonths {string[]} The names of the Haab months.
        @property tzolkinMonths {string[]} The names of the Tzolkin months. */
    regionalOptions: { // Localisations
        '': {
            name: 'Mayan',
            epochs: ['', ''],
            monthNames: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            '10', '11', '12', '13', '14', '15', '16', '17'],
            monthNamesShort: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            '10', '11', '12', '13', '14', '15', '16', '17'],
            dayNames: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            '10', '11', '12', '13', '14', '15', '16', '17', '18', '19'],
            dayNamesShort: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            '10', '11', '12', '13', '14', '15', '16', '17', '18', '19'],
            dayNamesMin: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            '10', '11', '12', '13', '14', '15', '16', '17', '18', '19'],
            digits: null,
            dateFormat: 'YYYY.m.d',
            firstDay: 0,
            isRTL: false,
            haabMonths: ['Pop', 'Uo', 'Zip', 'Zotz', 'Tzec', 'Xul', 'Yaxkin', 'Mol', 'Chen', 'Yax',
            'Zac', 'Ceh', 'Mac', 'Kankin', 'Muan', 'Pax', 'Kayab', 'Cumku', 'Uayeb'],
            tzolkinMonths: ['Imix', 'Ik', 'Akbal', 'Kan', 'Chicchan', 'Cimi', 'Manik', 'Lamat', 'Muluc', 'Oc',
            'Chuen', 'Eb', 'Ben', 'Ix', 'Men', 'Cib', 'Caban', 'Etznab', 'Cauac', 'Ahau']
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return false;
    },

    /** Format the year, if not a simple sequential number.
        @memberof MayanCalendar
        @param year {CDate|number} The date to format or the year to format.
        @return {string} The formatted year.
        @throws Error if an invalid year or a different calendar used. */
    formatYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        year = date.year();
        var baktun = Math.floor(year / 400);
        year = year % 400;
        year += (year < 0 ? 400 : 0);
        var katun = Math.floor(year / 20);
        return baktun + '.' + katun + '.' + (year % 20);
    },

    /** Convert from the formatted year back to a single number.
        @memberof MayanCalendar
        @param years {string} The year as n.n.n.
        @return {number} The sequential year.
        @throws Error if an invalid value is supplied. */
    forYear: function(years) {
        years = years.split('.');
        if (years.length < 3) {
            throw 'Invalid Mayan year';
        }
        var year = 0;
        for (var i = 0; i < years.length; i++) {
            var y = parseInt(years[i], 10);
            if (Math.abs(y) > 19 || (i > 0 && y < 0)) {
                throw 'Invalid Mayan year';
            }
            year = year * 20 + y;
        }
        return year;
    },

    /** Retrieve the number of months in a year.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return 18;
    },

    /** Determine the week of the year for a date.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        this._validate(year, month, day, main.local.invalidDate);
        return 0;
    },

    /** Retrieve the number of days in a year.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return 360;
    },

    /** Retrieve the number of days in a month.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        this._validate(year, month, this.minDay, main.local.invalidMonth);
        return 20;
    },

    /** Retrieve the number of days in a week.
        @memberof MayanCalendar
        @return {number} The number of days. */
    daysInWeek: function() {
        return 5; // Just for formatting
    },

    /** Retrieve the day of the week for a date.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The day of the week: 0 to number of days - 1.
        @throws Error if an invalid date or a different calendar used. */
    dayOfWeek: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        return date.day();
    },

    /** Determine whether this date is a week day.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        this._validate(year, month, day, main.local.invalidDate);
        return true;
    },

    /** Retrieve additional information about a date - Haab and Tzolkin equivalents.
        @memberof MayanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {object} Additional information - contents depends on calendar.
        @throws Error if an invalid date or a different calendar used. */
    extraInfo: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        var jd = date.toJD();
        var haab = this._toHaab(jd);
        var tzolkin = this._toTzolkin(jd);
        return {haabMonthName: this.local.haabMonths[haab[0] - 1],
            haabMonth: haab[0], haabDay: haab[1],
            tzolkinDayName: this.local.tzolkinMonths[tzolkin[0] - 1],
            tzolkinDay: tzolkin[0], tzolkinTrecena: tzolkin[1]};
    },

    /** Retrieve Haab date from a Julian date.
        @memberof MayanCalendar
        @private
        @param jd  {number} The Julian date.
        @return {number[]} Corresponding Haab month and day. */
    _toHaab: function(jd) {
        jd -= this.jdEpoch;
        var day = mod(jd + 8 + ((18 - 1) * 20), 365);
        return [Math.floor(day / 20) + 1, mod(day, 20)];
    },

    /** Retrieve Tzolkin date from a Julian date.
        @memberof MayanCalendar
        @private
        @param jd {number} The Julian date.
        @return {number[]} Corresponding Tzolkin day and trecena. */
    _toTzolkin: function(jd) {
        jd -= this.jdEpoch;
        return [amod(jd + 20, 20), amod(jd + 4, 13)];
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof MayanCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        return date.day() + (date.month() * 20) + (date.year() * 360) + this.jdEpoch;
    },

    /** Create a new date from a Julian date.
        @memberof MayanCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        jd = Math.floor(jd) + 0.5 - this.jdEpoch;
        var year = Math.floor(jd / 360);
        jd = jd % 360;
        jd += (jd < 0 ? 360 : 0);
        var month = Math.floor(jd / 20);
        var day = jd % 20;
        return this.newDate(year, month, day);
    }
});

// Modulus function which works for non-integers.
function mod(a, b) {
    return a - (b * Math.floor(a / b));
}

// Modulus function which returns numerator if modulus is zero.
function amod(a, b) {
    return mod(a - 1, b) + 1;
}

// Mayan calendar implementation
main.calendars.mayan = MayanCalendar;


},{"../main":1033,"object-assign":446}],1027:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Nanakshahi calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) January 2016.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Nanakshahi calendar.
    See also <a href="https://en.wikipedia.org/wiki/Nanakshahi_calendar">https://en.wikipedia.org/wiki/Nanakshahi_calendar</a>.
    @class NanakshahiCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function NanakshahiCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

NanakshahiCalendar.prototype = new main.baseCalendar;

var gregorian = main.instance('gregorian');

assign(NanakshahiCalendar.prototype, {
    /** The calendar name.
        @memberof NanakshahiCalendar */
    name: 'Nanakshahi',
    /** Julian date of start of Nanakshahi epoch: 14 March 1469 CE.
        @memberof NanakshahiCalendar */
    jdEpoch: 2257673.5,
    /** Days per month in a common year.
        @memberof NanakshahiCalendar */
    daysPerMonth: [31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof NanakshahiCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof NanakshahiCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof NanakshahiCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof NanakshahiCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof NanakshahiCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Nanakshahi',
            epochs: ['BN', 'AN'],
            monthNames: ['Chet', 'Vaisakh', 'Jeth', 'Harh', 'Sawan', 'Bhadon',
            'Assu', 'Katak', 'Maghar', 'Poh', 'Magh', 'Phagun'],
            monthNamesShort: ['Che', 'Vai', 'Jet', 'Har', 'Saw', 'Bha', 'Ass', 'Kat', 'Mgr', 'Poh', 'Mgh', 'Pha'],
            dayNames: ['Somvaar', 'Mangalvar', 'Budhvaar', 'Veervaar', 'Shukarvaar', 'Sanicharvaar', 'Etvaar'],
            dayNamesShort: ['Som', 'Mangal', 'Budh', 'Veer', 'Shukar', 'Sanichar', 'Et'],
            dayNamesMin: ['So', 'Ma', 'Bu', 'Ve', 'Sh', 'Sa', 'Et'],
            digits: null,
            dateFormat: 'dd-mm-yyyy',
            firstDay: 0,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof NanakshahiCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay,
            main.local.invalidYear || main.regionalOptions[''].invalidYear);
        return gregorian.leapYear(date.year() + (date.year() < 1 ? 1 : 0) + 1469);
    },

    /** Determine the week of the year for a date.
        @memberof NanakshahiCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Monday of this week starting on Monday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(1 - (checkDate.dayOfWeek() || 7), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof NanakshahiCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 12 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof NanakshahiCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof NanakshahiCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidMonth);
        var year = date.year();
        if (year < 0) { year++; } // No year zero
        var doy = date.day();
        for (var m = 1; m < date.month(); m++) {
            doy += this.daysPerMonth[m - 1];
        }
        return doy + gregorian.toJD(year + 1468, 3, 13);
    },

    /** Create a new date from a Julian date.
        @memberof NanakshahiCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        jd = Math.floor(jd + 0.5);
        var year = Math.floor((jd - (this.jdEpoch - 1)) / 366);
        while (jd >= this.toJD(year + 1, 1, 1)) {
            year++;
        }
        var day = jd - Math.floor(this.toJD(year, 1, 1) + 0.5) + 1;
        var month = 1;
        while (day > this.daysInMonth(year, month)) {
            day -= this.daysInMonth(year, month);
            month++;
        }
        return this.newDate(year, month, day);
    }
});

// Nanakshahi calendar implementation
main.calendars.nanakshahi = NanakshahiCalendar;


},{"../main":1033,"object-assign":446}],1028:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Nepali calendar for jQuery v2.0.2.
   Written by Artur Neumann (ict.projects{at}nepal.inf.org) April 2013.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Nepali civil calendar.
    Based on the ideas from 
    <a href="http://codeissue.com/articles/a04e050dea7468f/algorithm-to-convert-english-date-to-nepali-date-using-c-net">http://codeissue.com/articles/a04e050dea7468f/algorithm-to-convert-english-date-to-nepali-date-using-c-net</a>
    and <a href="http://birenj2ee.blogspot.com/2011/04/nepali-calendar-in-java.html">http://birenj2ee.blogspot.com/2011/04/nepali-calendar-in-java.html</a>
    See also <a href="http://en.wikipedia.org/wiki/Nepali_calendar">http://en.wikipedia.org/wiki/Nepali_calendar</a>
    and <a href="https://en.wikipedia.org/wiki/Bikram_Samwat">https://en.wikipedia.org/wiki/Bikram_Samwat</a>.
    @class NepaliCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function NepaliCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

NepaliCalendar.prototype = new main.baseCalendar;

assign(NepaliCalendar.prototype, {
    /** The calendar name.
        @memberof NepaliCalendar */
    name: 'Nepali',
    /** Julian date of start of Nepali epoch: 14 April 57 BCE.
        @memberof NepaliCalendar */
    jdEpoch: 1700709.5,
    /** Days per month in a common year.
        @memberof NepaliCalendar */
    daysPerMonth: [31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof NepaliCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof NepaliCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof NepaliCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof NepaliCalendar */
    minDay: 1, 
    /** The number of days in the year.
        @memberof NepaliCalendar */
    daysPerYear: 365,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof NepaliCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Nepali',
            epochs: ['BBS', 'ABS'],
            monthNames: ['Baisakh', 'Jestha', 'Ashadh', 'Shrawan', 'Bhadra', 'Ashwin',
            'Kartik', 'Mangsir', 'Paush', 'Mangh', 'Falgun', 'Chaitra'],
            monthNamesShort: ['Bai', 'Je', 'As', 'Shra', 'Bha', 'Ash', 'Kar', 'Mang', 'Pau', 'Ma', 'Fal', 'Chai'],
            dayNames: ['Aaitabaar', 'Sombaar', 'Manglbaar', 'Budhabaar', 'Bihibaar', 'Shukrabaar', 'Shanibaar'],
            dayNamesShort: ['Aaita', 'Som', 'Mangl', 'Budha', 'Bihi', 'Shukra', 'Shani'],
            dayNamesMin: ['Aai', 'So', 'Man', 'Bu', 'Bi', 'Shu', 'Sha'],
            digits: null,
            dateFormat: 'dd/mm/yyyy',
            firstDay: 1,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof NepaliCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        return this.daysInYear(year) !== this.daysPerYear;
    },

    /** Determine the week of the year for a date.
        @memberof NepaliCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a year.
        @memberof NepaliCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        year = date.year();
        if (typeof this.NEPALI_CALENDAR_DATA[year] === 'undefined') {
            return this.daysPerYear;
        }
        var daysPerYear = 0;
        for (var month_number = this.minMonth; month_number <= 12; month_number++) {
            daysPerYear += this.NEPALI_CALENDAR_DATA[year][month_number];
        }
        return daysPerYear;
    },

    /** Retrieve the number of days in a month.
        @memberof NepaliCalendar
        @param year {CDate|number| The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        if (year.year) {
            month = year.month();
            year = year.year();
        }
        this._validate(year, month, this.minDay, main.local.invalidMonth);
        return (typeof this.NEPALI_CALENDAR_DATA[year] === 'undefined' ?
            this.daysPerMonth[month - 1] : this.NEPALI_CALENDAR_DATA[year][month]);
    },

    /** Determine whether this date is a week day.
        @memberof NepaliCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return this.dayOfWeek(year, month, day) !== 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof NepaliCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(nepaliYear, nepaliMonth, nepaliDay) {
        var date = this._validate(nepaliYear, nepaliMonth, nepaliDay, main.local.invalidDate);
        nepaliYear = date.year();
        nepaliMonth = date.month();
        nepaliDay = date.day();
        var gregorianCalendar = main.instance();
        var gregorianDayOfYear = 0; // We will add all the days that went by since
        // the 1st. January and then we can get the Gregorian Date
        var nepaliMonthToCheck = nepaliMonth;
        var nepaliYearToCheck = nepaliYear;
        this._createMissingCalendarData(nepaliYear);
        // Get the correct year
        var gregorianYear = nepaliYear - (nepaliMonthToCheck > 9 || (nepaliMonthToCheck === 9 &&
            nepaliDay >= this.NEPALI_CALENDAR_DATA[nepaliYearToCheck][0]) ? 56 : 57);
        // First we add the amount of days in the actual Nepali month as the day of year in the
        // Gregorian one because at least this days are gone since the 1st. Jan. 
        if (nepaliMonth !== 9) {
            gregorianDayOfYear = nepaliDay;
            nepaliMonthToCheck--;
        }
        // Now we loop throw all Nepali month and add the amount of days to gregorianDayOfYear 
        // we do this till we reach Paush (9th month). 1st. January always falls in this month  
        while (nepaliMonthToCheck !== 9) {
            if (nepaliMonthToCheck <= 0) {
                nepaliMonthToCheck = 12;
                nepaliYearToCheck--;
            }                
            gregorianDayOfYear += this.NEPALI_CALENDAR_DATA[nepaliYearToCheck][nepaliMonthToCheck];
            nepaliMonthToCheck--;
        }        
        // If the date that has to be converted is in Paush (month no. 9) we have to do some other calculation
        if (nepaliMonth === 9) {
            // Add the days that are passed since the first day of Paush and substract the
            // amount of days that lie between 1st. Jan and 1st Paush
            gregorianDayOfYear += nepaliDay - this.NEPALI_CALENDAR_DATA[nepaliYearToCheck][0];
            // For the first days of Paush we are now in negative values,
            // because in the end of the gregorian year we substract
            // 365 / 366 days (P.S. remember math in school + - gives -)
            if (gregorianDayOfYear < 0) {
                gregorianDayOfYear += gregorianCalendar.daysInYear(gregorianYear);
            }
        }
        else {
            gregorianDayOfYear += this.NEPALI_CALENDAR_DATA[nepaliYearToCheck][9] -
                this.NEPALI_CALENDAR_DATA[nepaliYearToCheck][0];
        }        
        return gregorianCalendar.newDate(gregorianYear, 1 ,1).add(gregorianDayOfYear, 'd').toJD();
    },
    
    /** Create a new date from a Julian date.
        @memberof NepaliCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        var gregorianCalendar =  main.instance();
        var gregorianDate = gregorianCalendar.fromJD(jd);
        var gregorianYear = gregorianDate.year();
        var gregorianDayOfYear = gregorianDate.dayOfYear();
        var nepaliYear = gregorianYear + 56; //this is not final, it could be also +57 but +56 is always true for 1st Jan.
        this._createMissingCalendarData(nepaliYear);
        var nepaliMonth = 9; // Jan 1 always fall in Nepali month Paush which is the 9th month of Nepali calendar.
        // Get the Nepali day in Paush (month 9) of 1st January 
        var dayOfFirstJanInPaush = this.NEPALI_CALENDAR_DATA[nepaliYear][0];
        // Check how many days are left of Paush .
        // Days calculated from 1st Jan till the end of the actual Nepali month, 
        // we use this value to check if the gregorian Date is in the actual Nepali month.
        var daysSinceJanFirstToEndOfNepaliMonth =
            this.NEPALI_CALENDAR_DATA[nepaliYear][nepaliMonth] - dayOfFirstJanInPaush + 1;
        // If the gregorian day-of-year is smaller o equal than the sum of days between the 1st January and 
        // the end of the actual nepali month we found the correct nepali month.
        // Example: 
        // The 4th February 2011 is the gregorianDayOfYear 35 (31 days of January + 4)
        // 1st January 2011 is in the nepali year 2067, where 1st. January is in the 17th day of Paush (9th month)
        // In 2067 Paush has 30days, This means (30-17+1=14) there are 14days between 1st January and end of Paush 
        // (including 17th January)
        // The gregorianDayOfYear (35) is bigger than 14, so we check the next month
        // The next nepali month (Mangh) has 29 days 
        // 29+14=43, this is bigger than gregorianDayOfYear(35) so, we found the correct nepali month
        while (gregorianDayOfYear > daysSinceJanFirstToEndOfNepaliMonth) {
            nepaliMonth++;
            if (nepaliMonth > 12) {
                nepaliMonth = 1;
                nepaliYear++;
            }    
            daysSinceJanFirstToEndOfNepaliMonth += this.NEPALI_CALENDAR_DATA[nepaliYear][nepaliMonth];
        }
        // The last step is to calculate the nepali day-of-month
        // to continue our example from before:
        // we calculated there are 43 days from 1st. January (17 Paush) till end of Mangh (29 days)
        // when we subtract from this 43 days the day-of-year of the the Gregorian date (35),
        // we know how far the searched day is away from the end of the Nepali month.
        // So we simply subtract this number from the amount of days in this month (30) 
        var nepaliDayOfMonth = this.NEPALI_CALENDAR_DATA[nepaliYear][nepaliMonth] -
            (daysSinceJanFirstToEndOfNepaliMonth - gregorianDayOfYear);        
        return this.newDate(nepaliYear, nepaliMonth, nepaliDayOfMonth);
    },
    
    /** Creates missing data in the NEPALI_CALENDAR_DATA table.
        This data will not be correct but just give an estimated result. Mostly -/+ 1 day
        @private
        @param nepaliYear {number} The missing year number. */
    _createMissingCalendarData: function(nepaliYear) {
        var tmp_calendar_data = this.daysPerMonth.slice(0);
        tmp_calendar_data.unshift(17);
        for (var nepaliYearToCreate = (nepaliYear - 1); nepaliYearToCreate < (nepaliYear + 2); nepaliYearToCreate++) {
            if (typeof this.NEPALI_CALENDAR_DATA[nepaliYearToCreate] === 'undefined') {
                this.NEPALI_CALENDAR_DATA[nepaliYearToCreate] = tmp_calendar_data;
            }
        }
    },
    
    NEPALI_CALENDAR_DATA:  {
        // These data are from http://www.ashesh.com.np
        1970: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1971: [18, 31, 31, 32, 31, 32, 30, 30, 29, 30, 29, 30, 30],
        1972: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        1973: [19, 30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        1974: [19, 31, 31, 32, 30, 31, 31, 30, 29, 30, 29, 30, 30],
        1975: [18, 31, 31, 32, 32, 30, 31, 30, 29, 30, 29, 30, 30],
        1976: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        1977: [18, 31, 32, 31, 32, 31, 31, 29, 30, 29, 30, 29, 31],
        1978: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1979: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        1980: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        1981: [18, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        1982: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1983: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        1984: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        1985: [18, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        1986: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1987: [18, 31, 32, 31, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        1988: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        1989: [18, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        1990: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1991: [18, 31, 32, 31, 32, 31, 30, 30, 29, 30, 29, 30, 30],    
        // These data are from http://nepalicalendar.rat32.com/index.php
        1992: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        1993: [18, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        1994: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1995: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        1996: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        1997: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1998: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        1999: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2000: [17, 30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2001: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2002: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2003: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2004: [17, 30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2005: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2006: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2007: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2008: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 29, 31],
        2009: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2010: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2011: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2012: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        2013: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2014: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2015: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2016: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        2017: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2018: [18, 31, 32, 31, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2019: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2020: [17, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        2021: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2022: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        2023: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2024: [17, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        2025: [18, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2026: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2027: [17, 30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2028: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2029: [18, 31, 31, 32, 31, 32, 30, 30, 29, 30, 29, 30, 30],
        2030: [17, 31, 32, 31, 32, 31, 30, 30, 30, 30, 30, 30, 31],
        2031: [17, 31, 32, 31, 32, 31, 31, 31, 31, 31, 31, 31, 31],
        2032: [17, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32],
        2033: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2034: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2035: [17, 30, 32, 31, 32, 31, 31, 29, 30, 30, 29, 29, 31],
        2036: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2037: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2038: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2039: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        2040: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2041: [18, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2042: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2043: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        2044: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2045: [18, 31, 32, 31, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2046: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2047: [17, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        2048: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2049: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        2050: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2051: [17, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        2052: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2053: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        2054: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2055: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 30, 29, 30],
        2056: [17, 31, 31, 32, 31, 32, 30, 30, 29, 30, 29, 30, 30],
        2057: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2058: [17, 30, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2059: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2060: [17, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2061: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2062: [17, 30, 32, 31, 32, 31, 31, 29, 30, 29, 30, 29, 31],
        2063: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2064: [17, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2065: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2066: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 29, 31],
        2067: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2068: [17, 31, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2069: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2070: [17, 31, 31, 31, 32, 31, 31, 29, 30, 30, 29, 30, 30],
        2071: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2072: [17, 31, 32, 31, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2073: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 31],
        2074: [17, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        2075: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2076: [16, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        2077: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 29, 31],
        2078: [17, 31, 31, 31, 32, 31, 31, 30, 29, 30, 29, 30, 30],
        2079: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 29, 30, 30],
        2080: [16, 31, 32, 31, 32, 31, 30, 30, 30, 29, 29, 30, 30],
        // These data are from http://www.ashesh.com.np/nepali-calendar/
        2081: [17, 31, 31, 32, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2082: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2083: [17, 31, 31, 32, 31, 31, 30, 30, 30, 29, 30, 30, 30],
        2084: [17, 31, 31, 32, 31, 31, 30, 30, 30, 29, 30, 30, 30],
        2085: [17, 31, 32, 31, 32, 31, 31, 30, 30, 29, 30, 30, 30],
        2086: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2087: [16, 31, 31, 32, 31, 31, 31, 30, 30, 29, 30, 30, 30],
        2088: [16, 30, 31, 32, 32, 30, 31, 30, 30, 29, 30, 30, 30],
        2089: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2090: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2091: [16, 31, 31, 32, 31, 31, 31, 30, 30, 29, 30, 30, 30],
        2092: [16, 31, 31, 32, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2093: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2094: [17, 31, 31, 32, 31, 31, 30, 30, 30, 29, 30, 30, 30],
        2095: [17, 31, 31, 32, 31, 31, 31, 30, 29, 30, 30, 30, 30],
        2096: [17, 30, 31, 32, 32, 31, 30, 30, 29, 30, 29, 30, 30],
        2097: [17, 31, 32, 31, 32, 31, 30, 30, 30, 29, 30, 30, 30],
        2098: [17, 31, 31, 32, 31, 31, 31, 29, 30, 29, 30, 30, 31],
        2099: [17, 31, 31, 32, 31, 31, 31, 30, 29, 29, 30, 30, 30],
        2100: [17, 31, 32, 31, 32, 30, 31, 30, 29, 30, 29, 30, 30]    
    }
});    

// Nepali calendar implementation
main.calendars.nepali = NepaliCalendar;


},{"../main":1033,"object-assign":446}],1029:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Persian calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the Persian or Jalali calendar.
    Based on code from <a href="http://www.iranchamber.com/calendar/converter/iranian_calendar_converter.php">http://www.iranchamber.com/calendar/converter/iranian_calendar_converter.php</a>.
    See also <a href="http://en.wikipedia.org/wiki/Iranian_calendar">http://en.wikipedia.org/wiki/Iranian_calendar</a>.
    @class PersianCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function PersianCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

PersianCalendar.prototype = new main.baseCalendar;

assign(PersianCalendar.prototype, {
    /** The calendar name.
        @memberof PersianCalendar */
    name: 'Persian',
    /** Julian date of start of Persian epoch: 19 March 622 CE.
        @memberof PersianCalendar */
    jdEpoch: 1948320.5,
    /** Days per month in a common year.
        @memberof PersianCalendar */
    daysPerMonth: [31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof PersianCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof PersianCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof PersianCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof PersianCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof PersianCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Persian',
            epochs: ['BP', 'AP'],
            monthNames: ['Farvardin', 'Ordibehesht', 'Khordad', 'Tir', 'Mordad', 'Shahrivar',
            'Mehr', 'Aban', 'Azar', 'Day', 'Bahman', 'Esfand'],
            monthNamesShort: ['Far', 'Ord', 'Kho', 'Tir', 'Mor', 'Sha', 'Meh', 'Aba', 'Aza', 'Day', 'Bah', 'Esf'],
            dayNames: ['Yekshambe', 'Doshambe', 'Seshambe', 'Chæharshambe', 'Panjshambe', 'Jom\'e', 'Shambe'],
            dayNamesShort: ['Yek', 'Do', 'Se', 'Chæ', 'Panj', 'Jom', 'Sha'],
            dayNamesMin: ['Ye','Do','Se','Ch','Pa','Jo','Sh'],
            digits: null,
            dateFormat: 'yyyy/mm/dd',
            firstDay: 6,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof PersianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return (((((date.year() - (date.year() > 0 ? 474 : 473)) % 2820) +
            474 + 38) * 682) % 2816) < 682;
    },

    /** Determine the week of the year for a date.
        @memberof PersianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Saturday of this week starting on Saturday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-((checkDate.dayOfWeek() + 1) % 7), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof PersianCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 12 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof PersianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return this.dayOfWeek(year, month, day) !== 5;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof PersianCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        year = date.year();
        month = date.month();
        day = date.day();
        var epBase = year - (year >= 0 ? 474 : 473);
        var epYear = 474 + mod(epBase, 2820);
        return day + (month <= 7 ? (month - 1) * 31 : (month - 1) * 30 + 6) +
            Math.floor((epYear * 682 - 110) / 2816) + (epYear - 1) * 365 +
            Math.floor(epBase / 2820) * 1029983 + this.jdEpoch - 1;
    },

    /** Create a new date from a Julian date.
        @memberof PersianCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        jd = Math.floor(jd) + 0.5;
        var depoch = jd - this.toJD(475, 1, 1);
        var cycle = Math.floor(depoch / 1029983);
        var cyear = mod(depoch, 1029983);
        var ycycle = 2820;
        if (cyear !== 1029982) {
            var aux1 = Math.floor(cyear / 366);
            var aux2 = mod(cyear, 366);
            ycycle = Math.floor(((2134 * aux1) + (2816 * aux2) + 2815) / 1028522) + aux1 + 1;
        }
        var year = ycycle + (2820 * cycle) + 474;
        year = (year <= 0 ? year - 1 : year);
        var yday = jd - this.toJD(year, 1, 1) + 1;
        var month = (yday <= 186 ? Math.ceil(yday / 31) : Math.ceil((yday - 6) / 30));
        var day = jd - this.toJD(year, month, 1) + 1;
        return this.newDate(year, month, day);
    }
});

// Modulus function which works for non-integers.
function mod(a, b) {
    return a - (b * Math.floor(a / b));
}

// Persian (Jalali) calendar implementation
main.calendars.persian = PersianCalendar;
main.calendars.jalali = PersianCalendar;


},{"../main":1033,"object-assign":446}],1030:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Taiwanese (Minguo) calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) February 2010.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


var gregorianCalendar = main.instance();

/** Implementation of the Taiwanese calendar.
    See http://en.wikipedia.org/wiki/Minguo_calendar.
    @class TaiwanCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function TaiwanCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

TaiwanCalendar.prototype = new main.baseCalendar;

assign(TaiwanCalendar.prototype, {
    /** The calendar name.
        @memberof TaiwanCalendar */
    name: 'Taiwan',
    /** Julian date of start of Taiwan epoch: 1 January 1912 CE (Gregorian).
        @memberof TaiwanCalendar */
    jdEpoch: 2419402.5,
    /** Difference in years between Taiwan and Gregorian calendars.
        @memberof TaiwanCalendar */
    yearsOffset: 1911,
    /** Days per month in a common year.
        @memberof TaiwanCalendar */
    daysPerMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof TaiwanCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof TaiwanCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof TaiwanCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof TaiwanCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof TaiwanCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Taiwan',
            epochs: ['BROC', 'ROC'],
            monthNames: ['January', 'February', 'March', 'April', 'May', 'June',
            'July', 'August', 'September', 'October', 'November', 'December'],
            monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
            dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
            digits: null,
            dateFormat: 'yyyy/mm/dd',
            firstDay: 1,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof TaiwanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = this._t2gYear(date.year());
        return gregorianCalendar.leapYear(year);
    },

    /** Determine the week of the year for a date - ISO 8601.
        @memberof TaiwanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = this._t2gYear(date.year());
        return gregorianCalendar.weekOfYear(year, date.month(), date.day());
    },

    /** Retrieve the number of days in a month.
        @memberof TaiwanCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 2 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof TaiwanCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof TaiwanCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        var year = this._t2gYear(date.year());
        return gregorianCalendar.toJD(year, date.month(), date.day());
    },

    /** Create a new date from a Julian date.
        @memberof TaiwanCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        var date = gregorianCalendar.fromJD(jd);
        var year = this._g2tYear(date.year());
        return this.newDate(year, date.month(), date.day());
    },

    /** Convert Taiwanese to Gregorian year.
        @memberof TaiwanCalendar
        @private
        @param year {number} The Taiwanese year.
        @return {number} The corresponding Gregorian year. */
    _t2gYear: function(year) {
        return year + this.yearsOffset + (year >= -this.yearsOffset && year <= -1 ? 1 : 0);
    },

    /** Convert Gregorian to Taiwanese year.
        @memberof TaiwanCalendar
        @private
        @param year {number} The Gregorian year.
        @return {number} The corresponding Taiwanese year. */
    _g2tYear: function(year) {
        return year - this.yearsOffset - (year >= 1 && year <= this.yearsOffset ? 1 : 0);
    }
});

// Taiwan calendar implementation
main.calendars.taiwan = TaiwanCalendar;


},{"../main":1033,"object-assign":446}],1031:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Thai calendar for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) February 2010.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


var gregorianCalendar = main.instance();

/** Implementation of the Thai calendar.
    See http://en.wikipedia.org/wiki/Thai_calendar.
    @class ThaiCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function ThaiCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

ThaiCalendar.prototype = new main.baseCalendar;

assign(ThaiCalendar.prototype, {
    /** The calendar name.
        @memberof ThaiCalendar */
    name: 'Thai',
    /** Julian date of start of Thai epoch: 1 January 543 BCE (Gregorian).
        @memberof ThaiCalendar */
    jdEpoch: 1523098.5,
    /** Difference in years between Thai and Gregorian calendars.
        @memberof ThaiCalendar */
    yearsOffset: 543, 
    /** Days per month in a common year.
        @memberof ThaiCalendar */
    daysPerMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof ThaiCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof ThaiCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof ThaiCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof ThaiCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof ThaiCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Thai',
            epochs: ['BBE', 'BE'],
            monthNames: ['January', 'February', 'March', 'April', 'May', 'June',
            'July', 'August', 'September', 'October', 'November', 'December'],
            monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
            dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
            digits: null,
            dateFormat: 'dd/mm/yyyy',
            firstDay: 0,
            isRTL: false
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof ThaiCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = this._t2gYear(date.year());
        return gregorianCalendar.leapYear(year);
    },

    /** Determine the week of the year for a date - ISO 8601.
        @memberof ThaiCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        var year = this._t2gYear(date.year());
        return gregorianCalendar.weekOfYear(year, date.month(), date.day());
    },

    /** Retrieve the number of days in a month.
        @memberof ThaiCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 2 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof ThaiCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof ThaiCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        var year = this._t2gYear(date.year());
        return gregorianCalendar.toJD(year, date.month(), date.day());
    },

    /** Create a new date from a Julian date.
        @memberof ThaiCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        var date = gregorianCalendar.fromJD(jd);
        var year = this._g2tYear(date.year());
        return this.newDate(year, date.month(), date.day());
    },

    /** Convert Thai to Gregorian year.
        @memberof ThaiCalendar
        @private
        @param year {number} The Thai year.
        @return {number} The corresponding Gregorian year. */
    _t2gYear: function(year) {
        return year - this.yearsOffset - (year >= 1 && year <= this.yearsOffset ? 1 : 0);
    },

    /** Convert Gregorian to Thai year.
        @memberof ThaiCalendar
        @private
        @param year {number} The Gregorian year.
        @return {number} The corresponding Thai year. */
    _g2tYear: function(year) {
        return year + this.yearsOffset + (year >= -this.yearsOffset && year <= -1 ? 1 : 0);
    }
});

// Thai calendar implementation
main.calendars.thai = ThaiCalendar;


},{"../main":1033,"object-assign":446}],1032:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   UmmAlQura calendar for jQuery v2.0.2.
   Written by Amro Osama March 2013.
   Modified by Binnooh.com & www.elm.sa - 2014 - Added dates back to 1276 Hijri year.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var main = require('../main');
var assign = require('object-assign');


/** Implementation of the UmmAlQura or 'saudi' calendar.
    See also <a href="http://en.wikipedia.org/wiki/Islamic_calendar#Saudi_Arabia.27s_Umm_al-Qura_calendar">http://en.wikipedia.org/wiki/Islamic_calendar#Saudi_Arabia.27s_Umm_al-Qura_calendar</a>.
    <a href="http://www.ummulqura.org.sa/About.aspx">http://www.ummulqura.org.sa/About.aspx</a>
    <a href="http://www.staff.science.uu.nl/~gent0113/islam/ummalqura.htm">http://www.staff.science.uu.nl/~gent0113/islam/ummalqura.htm</a>
    @class UmmAlQuraCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function UmmAlQuraCalendar(language) {
    this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
}

UmmAlQuraCalendar.prototype = new main.baseCalendar;

assign(UmmAlQuraCalendar.prototype, {
    /** The calendar name.
        @memberof UmmAlQuraCalendar */
    name: 'UmmAlQura',
    //jdEpoch: 1948440, // Julian date of start of UmmAlQura epoch: 14 March 1937 CE
    //daysPerMonth: // Days per month in a common year, replaced by a method.
    /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof UmmAlQuraCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof UmmAlQuraCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof UmmAlQuraCalendar */
    firstMonth: 1,
    /** The minimum day number.
        @memberof UmmAlQuraCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof UmmAlQuraCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Umm al-Qura',
            epochs: ['BH', 'AH'],
            monthNames: ['Al-Muharram', 'Safar', 'Rabi\' al-awwal', 'Rabi\' Al-Thani', 'Jumada Al-Awwal', 'Jumada Al-Thani',
            'Rajab', 'Sha\'aban', 'Ramadan', 'Shawwal', 'Dhu al-Qi\'dah', 'Dhu al-Hijjah'],
            monthNamesShort: ['Muh', 'Saf', 'Rab1', 'Rab2', 'Jum1', 'Jum2', 'Raj', 'Sha\'', 'Ram', 'Shaw', 'DhuQ', 'DhuH'],
            dayNames: ['Yawm al-Ahad', 'Yawm al-Ithnain', 'Yawm al-Thalāthā’', 'Yawm al-Arba‘ā’', 'Yawm al-Khamīs', 'Yawm al-Jum‘a', 'Yawm al-Sabt'],
            dayNamesMin: ['Ah', 'Ith', 'Th', 'Ar', 'Kh', 'Ju', 'Sa'],
            digits: null,
            dateFormat: 'yyyy/mm/dd',
            firstDay: 6,
            isRTL: true
        }
    },

    /** Determine whether this date is in a leap year.
        @memberof UmmAlQuraCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function (year) {
        var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
        return (this.daysInYear(date.year()) === 355);
    },

    /** Determine the week of the year for a date.
        @memberof UmmAlQuraCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function (year, month, day) {
        // Find Sunday of this week starting on Sunday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(-checkDate.dayOfWeek(), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a year.
        @memberof UmmAlQuraCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function (year) {
        var daysCount = 0;
        for (var i = 1; i <= 12; i++) {
            daysCount += this.daysInMonth(year, i);
        }
        return daysCount;
    },

    /** Retrieve the number of days in a month.
        @memberof UmmAlQuraCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function (year, month) {
        var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
        var mcjdn = date.toJD() - 2400000 + 0.5; // Modified Chronological Julian Day Number (MCJDN)
        // the MCJDN's of the start of the lunations in the Umm al-Qura calendar are stored in the 'ummalqura_dat' array
        var index = 0;
        for (var i = 0; i < ummalqura_dat.length; i++) {
            if (ummalqura_dat[i] > mcjdn) {
                return (ummalqura_dat[index] - ummalqura_dat[index - 1]);
            }
            index++;
        }
        return 30; // Unknown outside
    },

    /** Determine whether this date is a week day.
        @memberof UmmAlQuraCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function (year, month, day) {
        return this.dayOfWeek(year, month, day) !== 5;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof UmmAlQuraCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function (year, month, day) {
        var date = this._validate(year, month, day, main.local.invalidDate);
        var index = (12 * (date.year() - 1)) + date.month() - 15292;
        var mcjdn = date.day() + ummalqura_dat[index - 1] - 1;
        return mcjdn + 2400000 - 0.5; // Modified Chronological Julian Day Number (MCJDN)
    },

    /** Create a new date from a Julian date.
        @memberof UmmAlQuraCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function (jd) {
        var mcjdn = jd - 2400000 + 0.5; // Modified Chronological Julian Day Number (MCJDN)
        // the MCJDN's of the start of the lunations in the Umm al-Qura calendar 
        // are stored in the 'ummalqura_dat' array
        var index = 0;
        for (var i = 0; i < ummalqura_dat.length; i++) {
            if (ummalqura_dat[i] > mcjdn) break;
            index++;
        }
        var lunation = index + 15292; //UmmAlQura Lunation Number
        var ii = Math.floor((lunation - 1) / 12);
        var year = ii + 1;
        var month = lunation - 12 * ii;
        var day = mcjdn - ummalqura_dat[index - 1] + 1;
        return this.newDate(year, month, day);
    },

    /** Determine whether a date is valid for this calendar.
        @memberof UmmAlQuraCalendar
        @param year {number} The year to examine.
        @param month {number} The month to examine.
        @param day {number} The day to examine.
        @return {boolean} <code>true</code> if a valid date, <code>false</code> if not. */
    isValid: function(year, month, day) {
        var valid = main.baseCalendar.prototype.isValid.apply(this, arguments);
        if (valid) {
            year = (year.year != null ? year.year : year);
            valid = (year >= 1276 && year <= 1500);
        }
        return valid;
    },

    /** Check that a candidate date is from the same calendar and is valid.
        @memberof UmmAlQuraCalendar
        @private
        @param year {CDate|number} The date to validate or the year to validate.
        @param month {number} The month to validate.
        @param day {number} The day to validate.
        @param error {string} Error message if invalid.
        @throws Error if different calendars used or invalid date. */
    _validate: function(year, month, day, error) {
        var date = main.baseCalendar.prototype._validate.apply(this, arguments);
        if (date.year < 1276 || date.year > 1500) {
            throw error.replace(/\{0\}/, this.local.name);
        }
        return date;
    }
});

// UmmAlQura calendar implementation
main.calendars.ummalqura = UmmAlQuraCalendar;

var ummalqura_dat = [
    20,    50,    79,    109,   138,   168,   197,   227,   256,   286,   315,   345,   374,   404,   433,   463,   492,   522,   551,   581, 
    611,   641,   670,   700,   729,   759,   788,   818,   847,   877,   906,   936,   965,   995,   1024,  1054,  1083,  1113,  1142,  1172,
    1201,  1231,  1260,  1290,  1320,  1350,  1379,  1409,  1438,  1468,  1497,  1527,  1556,  1586,  1615,  1645,  1674,  1704,  1733,  1763,
    1792,  1822,  1851,  1881,  1910,  1940,  1969,  1999,  2028,  2058,  2087,  2117,  2146,  2176,  2205,  2235,  2264,  2294,  2323,  2353,
    2383,  2413,  2442,  2472,  2501,  2531,  2560,  2590,  2619,  2649,  2678,  2708,  2737,  2767,  2796,  2826,  2855,  2885,  2914,  2944,
    2973,  3003,  3032,  3062,  3091,  3121,  3150,  3180,  3209,  3239,  3268,  3298,  3327,  3357,  3386,  3416,  3446,  3476,  3505,  3535,
    3564,  3594,  3623,  3653,  3682,  3712,  3741,  3771,  3800,  3830,  3859,  3889,  3918,  3948,  3977,  4007,  4036,  4066,  4095,  4125,
    4155,  4185,  4214,  4244,  4273,  4303,  4332,  4362,  4391,  4421,  4450,  4480,  4509,  4539,  4568,  4598,  4627,  4657,  4686,  4716,
    4745,  4775,  4804,  4834,  4863,  4893,  4922,  4952,  4981,  5011,  5040,  5070,  5099,  5129,  5158,  5188,  5218,  5248,  5277,  5307,
    5336,  5366,  5395,  5425,  5454,  5484,  5513,  5543,  5572,  5602,  5631,  5661,  5690,  5720,  5749,  5779,  5808,  5838,  5867,  5897,
    5926,  5956,  5985,  6015,  6044,  6074,  6103,  6133,  6162,  6192,  6221,  6251,  6281,  6311,  6340,  6370,  6399,  6429,  6458,  6488,
    6517,  6547,  6576,  6606,  6635,  6665,  6694,  6724,  6753,  6783,  6812,  6842,  6871,  6901,  6930,  6960,  6989,  7019,  7048,  7078,
    7107,  7137,  7166,  7196,  7225,  7255,  7284,  7314,  7344,  7374,  7403,  7433,  7462,  7492,  7521,  7551,  7580,  7610,  7639,  7669,
    7698,  7728,  7757,  7787,  7816,  7846,  7875,  7905,  7934,  7964,  7993,  8023,  8053,  8083,  8112,  8142,  8171,  8201,  8230,  8260,
    8289,  8319,  8348,  8378,  8407,  8437,  8466,  8496,  8525,  8555,  8584,  8614,  8643,  8673,  8702,  8732,  8761,  8791,  8821,  8850,
    8880,  8909,  8938,  8968,  8997,  9027,  9056,  9086,  9115,  9145,  9175,  9205,  9234,  9264,  9293,  9322,  9352,  9381,  9410,  9440,
    9470,  9499,  9529,  9559,  9589,  9618,  9648,  9677,  9706,  9736,  9765,  9794,  9824,  9853,  9883,  9913,  9943,  9972,  10002, 10032,
    10061, 10090, 10120, 10149, 10178, 10208, 10237, 10267, 10297, 10326, 10356, 10386, 10415, 10445, 10474, 10504, 10533, 10562, 10592, 10621,
    10651, 10680, 10710, 10740, 10770, 10799, 10829, 10858, 10888, 10917, 10947, 10976, 11005, 11035, 11064, 11094, 11124, 11153, 11183, 11213,
    11242, 11272, 11301, 11331, 11360, 11389, 11419, 11448, 11478, 11507, 11537, 11567, 11596, 11626, 11655, 11685, 11715, 11744, 11774, 11803,
    11832, 11862, 11891, 11921, 11950, 11980, 12010, 12039, 12069, 12099, 12128, 12158, 12187, 12216, 12246, 12275, 12304, 12334, 12364, 12393,
    12423, 12453, 12483, 12512, 12542, 12571, 12600, 12630, 12659, 12688, 12718, 12747, 12777, 12807, 12837, 12866, 12896, 12926, 12955, 12984,
    13014, 13043, 13072, 13102, 13131, 13161, 13191, 13220, 13250, 13280, 13310, 13339, 13368, 13398, 13427, 13456, 13486, 13515, 13545, 13574,
    13604, 13634, 13664, 13693, 13723, 13752, 13782, 13811, 13840, 13870, 13899, 13929, 13958, 13988, 14018, 14047, 14077, 14107, 14136, 14166,
    14195, 14224, 14254, 14283, 14313, 14342, 14372, 14401, 14431, 14461, 14490, 14520, 14550, 14579, 14609, 14638, 14667, 14697, 14726, 14756,
    14785, 14815, 14844, 14874, 14904, 14933, 14963, 14993, 15021, 15051, 15081, 15110, 15140, 15169, 15199, 15228, 15258, 15287, 15317, 15347,
    15377, 15406, 15436, 15465, 15494, 15524, 15553, 15582, 15612, 15641, 15671, 15701, 15731, 15760, 15790, 15820, 15849, 15878, 15908, 15937,
    15966, 15996, 16025, 16055, 16085, 16114, 16144, 16174, 16204, 16233, 16262, 16292, 16321, 16350, 16380, 16409, 16439, 16468, 16498, 16528,
    16558, 16587, 16617, 16646, 16676, 16705, 16734, 16764, 16793, 16823, 16852, 16882, 16912, 16941, 16971, 17001, 17030, 17060, 17089, 17118,
    17148, 17177, 17207, 17236, 17266, 17295, 17325, 17355, 17384, 17414, 17444, 17473, 17502, 17532, 17561, 17591, 17620, 17650, 17679, 17709,
    17738, 17768, 17798, 17827, 17857, 17886, 17916, 17945, 17975, 18004, 18034, 18063, 18093, 18122, 18152, 18181, 18211, 18241, 18270, 18300,
    18330, 18359, 18388, 18418, 18447, 18476, 18506, 18535, 18565, 18595, 18625, 18654, 18684, 18714, 18743, 18772, 18802, 18831, 18860, 18890,
    18919, 18949, 18979, 19008, 19038, 19068, 19098, 19127, 19156, 19186, 19215, 19244, 19274, 19303, 19333, 19362, 19392, 19422, 19452, 19481,
    19511, 19540, 19570, 19599, 19628, 19658, 19687, 19717, 19746, 19776, 19806, 19836, 19865, 19895, 19924, 19954, 19983, 20012, 20042, 20071,
    20101, 20130, 20160, 20190, 20219, 20249, 20279, 20308, 20338, 20367, 20396, 20426, 20455, 20485, 20514, 20544, 20573, 20603, 20633, 20662,
    20692, 20721, 20751, 20780, 20810, 20839, 20869, 20898, 20928, 20957, 20987, 21016, 21046, 21076, 21105, 21135, 21164, 21194, 21223, 21253,
    21282, 21312, 21341, 21371, 21400, 21430, 21459, 21489, 21519, 21548, 21578, 21607, 21637, 21666, 21696, 21725, 21754, 21784, 21813, 21843,
    21873, 21902, 21932, 21962, 21991, 22021, 22050, 22080, 22109, 22138, 22168, 22197, 22227, 22256, 22286, 22316, 22346, 22375, 22405, 22434,
    22464, 22493, 22522, 22552, 22581, 22611, 22640, 22670, 22700, 22730, 22759, 22789, 22818, 22848, 22877, 22906, 22936, 22965, 22994, 23024,
    23054, 23083, 23113, 23143, 23173, 23202, 23232, 23261, 23290, 23320, 23349, 23379, 23408, 23438, 23467, 23497, 23527, 23556, 23586, 23616,
    23645, 23674, 23704, 23733, 23763, 23792, 23822, 23851, 23881, 23910, 23940, 23970, 23999, 24029, 24058, 24088, 24117, 24147, 24176, 24206,
    24235, 24265, 24294, 24324, 24353, 24383, 24413, 24442, 24472, 24501, 24531, 24560, 24590, 24619, 24648, 24678, 24707, 24737, 24767, 24796,
    24826, 24856, 24885, 24915, 24944, 24974, 25003, 25032, 25062, 25091, 25121, 25150, 25180, 25210, 25240, 25269, 25299, 25328, 25358, 25387,
    25416, 25446, 25475, 25505, 25534, 25564, 25594, 25624, 25653, 25683, 25712, 25742, 25771, 25800, 25830, 25859, 25888, 25918, 25948, 25977,
    26007, 26037, 26067, 26096, 26126, 26155, 26184, 26214, 26243, 26272, 26302, 26332, 26361, 26391, 26421, 26451, 26480, 26510, 26539, 26568,
    26598, 26627, 26656, 26686, 26715, 26745, 26775, 26805, 26834, 26864, 26893, 26923, 26952, 26982, 27011, 27041, 27070, 27099, 27129, 27159,
    27188, 27218, 27248, 27277, 27307, 27336, 27366, 27395, 27425, 27454, 27484, 27513, 27542, 27572, 27602, 27631, 27661, 27691, 27720, 27750,
    27779, 27809, 27838, 27868, 27897, 27926, 27956, 27985, 28015, 28045, 28074, 28104, 28134, 28163, 28193, 28222, 28252, 28281, 28310, 28340,
    28369, 28399, 28428, 28458, 28488, 28517, 28547, 28577,
    // From 1356
    28607, 28636, 28665, 28695, 28724, 28754, 28783, 28813, 28843, 28872, 28901, 28931, 28960, 28990, 29019, 29049, 29078, 29108, 29137, 29167,
    29196, 29226, 29255, 29285, 29315, 29345, 29375, 29404, 29434, 29463, 29492, 29522, 29551, 29580, 29610, 29640, 29669, 29699, 29729, 29759,
    29788, 29818, 29847, 29876, 29906, 29935, 29964, 29994, 30023, 30053, 30082, 30112, 30141, 30171, 30200, 30230, 30259, 30289, 30318, 30348,
    30378, 30408, 30437, 30467, 30496, 30526, 30555, 30585, 30614, 30644, 30673, 30703, 30732, 30762, 30791, 30821, 30850, 30880, 30909, 30939,
    30968, 30998, 31027, 31057, 31086, 31116, 31145, 31175, 31204, 31234, 31263, 31293, 31322, 31352, 31381, 31411, 31441, 31471, 31500, 31530,
    31559, 31589, 31618, 31648, 31676, 31706, 31736, 31766, 31795, 31825, 31854, 31884, 31913, 31943, 31972, 32002, 32031, 32061, 32090, 32120,
    32150, 32180, 32209, 32239, 32268, 32298, 32327, 32357, 32386, 32416, 32445, 32475, 32504, 32534, 32563, 32593, 32622, 32652, 32681, 32711,
    32740, 32770, 32799, 32829, 32858, 32888, 32917, 32947, 32976, 33006, 33035, 33065, 33094, 33124, 33153, 33183, 33213, 33243, 33272, 33302,
    33331, 33361, 33390, 33420, 33450, 33479, 33509, 33539, 33568, 33598, 33627, 33657, 33686, 33716, 33745, 33775, 33804, 33834, 33863, 33893,
    33922, 33952, 33981, 34011, 34040, 34069, 34099, 34128, 34158, 34187, 34217, 34247, 34277, 34306, 34336, 34365, 34395, 34424, 34454, 34483,
    34512, 34542, 34571, 34601, 34631, 34660, 34690, 34719, 34749, 34778, 34808, 34837, 34867, 34896, 34926, 34955, 34985, 35015, 35044, 35074,
    35103, 35133, 35162, 35192, 35222, 35251, 35280, 35310, 35340, 35370, 35399, 35429, 35458, 35488, 35517, 35547, 35576, 35605, 35635, 35665,
    35694, 35723, 35753, 35782, 35811, 35841, 35871, 35901, 35930, 35960, 35989, 36019, 36048, 36078, 36107, 36136, 36166, 36195, 36225, 36254,
    36284, 36314, 36343, 36373, 36403, 36433, 36462, 36492, 36521, 36551, 36580, 36610, 36639, 36669, 36698, 36728, 36757, 36786, 36816, 36845,
    36875, 36904, 36934, 36963, 36993, 37022, 37052, 37081, 37111, 37141, 37170, 37200, 37229, 37259, 37288, 37318, 37347, 37377, 37406, 37436,
    37465, 37495, 37524, 37554, 37584, 37613, 37643, 37672, 37701, 37731, 37760, 37790, 37819, 37849, 37878, 37908, 37938, 37967, 37997, 38027,
    38056, 38085, 38115, 38144, 38174, 38203, 38233, 38262, 38292, 38322, 38351, 38381, 38410, 38440, 38469, 38499, 38528, 38558, 38587, 38617,
    38646, 38676, 38705, 38735, 38764, 38794, 38823, 38853, 38882, 38912, 38941, 38971, 39001, 39030, 39059, 39089, 39118, 39148, 39178, 39208,
    39237, 39267, 39297, 39326, 39355, 39385, 39414, 39444, 39473, 39503, 39532, 39562, 39592, 39621, 39650, 39680, 39709, 39739, 39768, 39798,
    39827, 39857, 39886, 39916, 39946, 39975, 40005, 40035, 40064, 40094, 40123, 40153, 40182, 40212, 40241, 40271, 40300, 40330, 40359, 40389,
    40418, 40448, 40477, 40507, 40536, 40566, 40595, 40625, 40655, 40685, 40714, 40744, 40773, 40803, 40832, 40862, 40892, 40921, 40951, 40980,
    41009, 41039, 41068, 41098, 41127, 41157, 41186, 41216, 41245, 41275, 41304, 41334, 41364, 41393, 41422, 41452, 41481, 41511, 41540, 41570,
    41599, 41629, 41658, 41688, 41718, 41748, 41777, 41807, 41836, 41865, 41894, 41924, 41953, 41983, 42012, 42042, 42072, 42102, 42131, 42161,
    42190, 42220, 42249, 42279, 42308, 42337, 42367, 42397, 42426, 42456, 42485, 42515, 42545, 42574, 42604, 42633, 42662, 42692, 42721, 42751,
    42780, 42810, 42839, 42869, 42899, 42929, 42958, 42988, 43017, 43046, 43076, 43105, 43135, 43164, 43194, 43223, 43253, 43283, 43312, 43342,
    43371, 43401, 43430, 43460, 43489, 43519, 43548, 43578, 43607, 43637, 43666, 43696, 43726, 43755, 43785, 43814, 43844, 43873, 43903, 43932,
    43962, 43991, 44021, 44050, 44080, 44109, 44139, 44169, 44198, 44228, 44258, 44287, 44317, 44346, 44375, 44405, 44434, 44464, 44493, 44523,
    44553, 44582, 44612, 44641, 44671, 44700, 44730, 44759, 44788, 44818, 44847, 44877, 44906, 44936, 44966, 44996, 45025, 45055, 45084, 45114,
    45143, 45172, 45202, 45231, 45261, 45290, 45320, 45350, 45380, 45409, 45439, 45468, 45498, 45527, 45556, 45586, 45615, 45644, 45674, 45704,
    45733, 45763, 45793, 45823, 45852, 45882, 45911, 45940, 45970, 45999, 46028, 46058, 46088, 46117, 46147, 46177, 46206, 46236, 46265, 46295,
    46324, 46354, 46383, 46413, 46442, 46472, 46501, 46531, 46560, 46590, 46620, 46649, 46679, 46708, 46738, 46767, 46797, 46826, 46856, 46885,
    46915, 46944, 46974, 47003, 47033, 47063, 47092, 47122, 47151, 47181, 47210, 47240, 47269, 47298, 47328, 47357, 47387, 47417, 47446, 47476,
    47506, 47535, 47565, 47594, 47624, 47653, 47682, 47712, 47741, 47771, 47800, 47830, 47860, 47890, 47919, 47949, 47978, 48008, 48037, 48066,
    48096, 48125, 48155, 48184, 48214, 48244, 48273, 48303, 48333, 48362, 48392, 48421, 48450, 48480, 48509, 48538, 48568, 48598, 48627, 48657,
    48687, 48717, 48746, 48776, 48805, 48834, 48864, 48893, 48922, 48952, 48982, 49011, 49041, 49071, 49100, 49130, 49160, 49189, 49218, 49248,
    49277, 49306, 49336, 49365, 49395, 49425, 49455, 49484, 49514, 49543, 49573, 49602, 49632, 49661, 49690, 49720, 49749, 49779, 49809, 49838,
    49868, 49898, 49927, 49957, 49986, 50016, 50045, 50075, 50104, 50133, 50163, 50192, 50222, 50252, 50281, 50311, 50340, 50370, 50400, 50429,
    50459, 50488, 50518, 50547, 50576, 50606, 50635, 50665, 50694, 50724, 50754, 50784, 50813, 50843, 50872, 50902, 50931, 50960, 50990, 51019,
    51049, 51078, 51108, 51138, 51167, 51197, 51227, 51256, 51286, 51315, 51345, 51374, 51403, 51433, 51462, 51492, 51522, 51552, 51582, 51611,
    51641, 51670, 51699, 51729, 51758, 51787, 51816, 51846, 51876, 51906, 51936, 51965, 51995, 52025, 52054, 52083, 52113, 52142, 52171, 52200,
    52230, 52260, 52290, 52319, 52349, 52379, 52408, 52438, 52467, 52497, 52526, 52555, 52585, 52614, 52644, 52673, 52703, 52733, 52762, 52792,
    52822, 52851, 52881, 52910, 52939, 52969, 52998, 53028, 53057, 53087, 53116, 53146, 53176, 53205, 53235, 53264, 53294, 53324, 53353, 53383,
    53412, 53441, 53471, 53500, 53530, 53559, 53589, 53619, 53648, 53678, 53708, 53737, 53767, 53796, 53825, 53855, 53884, 53913, 53943, 53973,
    54003, 54032, 54062, 54092, 54121, 54151, 54180, 54209, 54239, 54268, 54297, 54327, 54357, 54387, 54416, 54446, 54476, 54505, 54535, 54564,
    54593, 54623, 54652, 54681, 54711, 54741, 54770, 54800, 54830, 54859, 54889, 54919, 54948, 54977, 55007, 55036, 55066, 55095, 55125, 55154,
    55184, 55213, 55243, 55273, 55302, 55332, 55361, 55391, 55420, 55450, 55479, 55508, 55538, 55567, 55597, 55627, 55657, 55686, 55716, 55745,
    55775, 55804, 55834, 55863, 55892, 55922, 55951, 55981, 56011, 56040, 56070, 56100, 56129, 56159, 56188, 56218, 56247, 56276, 56306, 56335,
    56365, 56394, 56424, 56454, 56483, 56513, 56543, 56572, 56601, 56631, 56660, 56690, 56719, 56749, 56778, 56808, 56837, 56867, 56897, 56926,
    56956, 56985, 57015, 57044, 57074, 57103, 57133, 57162, 57192, 57221, 57251, 57280, 57310, 57340, 57369, 57399, 57429, 57458, 57487, 57517,
    57546, 57576, 57605, 57634, 57664, 57694, 57723, 57753, 57783, 57813, 57842, 57871, 57901, 57930, 57959, 57989, 58018, 58048, 58077, 58107,
    58137, 58167, 58196, 58226, 58255, 58285, 58314, 58343, 58373, 58402, 58432, 58461, 58491, 58521, 58551, 58580, 58610, 58639, 58669, 58698,
    58727, 58757, 58786, 58816, 58845, 58875, 58905, 58934, 58964, 58994, 59023, 59053, 59082, 59111, 59141, 59170, 59200, 59229, 59259, 59288,
    59318, 59348, 59377, 59407, 59436, 59466, 59495, 59525, 59554, 59584, 59613, 59643, 59672, 59702, 59731, 59761, 59791, 59820, 59850, 59879,
    59909, 59939, 59968, 59997, 60027, 60056, 60086, 60115, 60145, 60174, 60204, 60234, 60264, 60293, 60323, 60352, 60381, 60411, 60440, 60469,
    60499, 60528, 60558, 60588, 60618, 60648, 60677, 60707, 60736, 60765, 60795, 60824, 60853, 60883, 60912, 60942, 60972, 61002, 61031, 61061,
    61090, 61120, 61149, 61179, 61208, 61237, 61267, 61296, 61326, 61356, 61385, 61415, 61445, 61474, 61504, 61533, 61563, 61592, 61621, 61651,
    61680, 61710, 61739, 61769, 61799, 61828, 61858, 61888, 61917, 61947, 61976, 62006, 62035, 62064, 62094, 62123, 62153, 62182, 62212, 62242,
    62271, 62301, 62331, 62360, 62390, 62419, 62448, 62478, 62507, 62537, 62566, 62596, 62625, 62655, 62685, 62715, 62744, 62774, 62803, 62832,
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    79990];


},{"../main":1033,"object-assign":446}],1033:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Calendars for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var assign = require('object-assign');


function Calendars() {
    this.regionalOptions = [];
    this.regionalOptions[''] = {
        invalidCalendar: 'Calendar {0} not found',
        invalidDate: 'Invalid {0} date',
        invalidMonth: 'Invalid {0} month',
        invalidYear: 'Invalid {0} year',
        differentCalendars: 'Cannot mix {0} and {1} dates'
    };
    this.local = this.regionalOptions[''];
    this.calendars = {};
    this._localCals = {};
}

/** Create the calendars plugin.
    <p>Provides support for various world calendars in a consistent manner.</p>
     @class Calendars
    @example _exports.instance('julian').newDate(2014, 12, 25) */
assign(Calendars.prototype, {

    /** Obtain a calendar implementation and localisation.
        @memberof Calendars
        @param [name='gregorian'] {string} The name of the calendar, e.g. 'gregorian', 'persian', 'islamic'.
        @param [language=''] {string} The language code to use for localisation (default is English).
        @return {Calendar} The calendar and localisation.
        @throws Error if calendar not found. */
    instance: function(name, language) {
        name = (name || 'gregorian').toLowerCase();
        language = language || '';
        var cal = this._localCals[name + '-' + language];
        if (!cal && this.calendars[name]) {
            cal = new this.calendars[name](language);
            this._localCals[name + '-' + language] = cal;
        }
        if (!cal) {
            throw (this.local.invalidCalendar || this.regionalOptions[''].invalidCalendar).
                replace(/\{0\}/, name);
        }
        return cal;
    },

    /** Create a new date - for today if no other parameters given.
        @memberof Calendars
        @param year {CDate|number} The date to copy or the year for the date.
        @param [month] {number} The month for the date.
        @param [day] {number} The day for the date.
        @param [calendar='gregorian'] {BaseCalendar|string} The underlying calendar or the name of the calendar.
        @param [language=''] {string} The language to use for localisation (default English).
        @return {CDate} The new date.
        @throws Error if an invalid date. */
    newDate: function(year, month, day, calendar, language) {
        calendar = (year != null && year.year ? year.calendar() : (typeof calendar === 'string' ?
            this.instance(calendar, language) : calendar)) || this.instance();
        return calendar.newDate(year, month, day);
    },
    
    /** A simple digit substitution function for localising numbers via the Calendar digits option.
        @member Calendars
        @param digits {string[]} The substitute digits, for 0 through 9.
        @return {function} The substitution function. */
    substituteDigits: function(digits) {
        return function(value) {
            return (value + '').replace(/[0-9]/g, function(digit) {
                return digits[digit];
            });
        }
    },
    
    /** Digit substitution function for localising Chinese style numbers via the Calendar digits option.
        @member Calendars
        @param digits {string[]} The substitute digits, for 0 through 9.
        @param powers {string[]} The characters denoting powers of 10, i.e. 1, 10, 100, 1000.
        @return {function} The substitution function. */
    substituteChineseDigits: function(digits, powers) {
        return function(value) {
            var localNumber = '';
            var power = 0;
            while (value > 0) {
                var units = value % 10;
                localNumber = (units === 0 ? '' : digits[units] + powers[power]) + localNumber;
                power++;
                value = Math.floor(value / 10);
            }
            if (localNumber.indexOf(digits[1] + powers[1]) === 0) {
                localNumber = localNumber.substr(1);
            }
            return localNumber || digits[0];
        }
    }
});

/** Generic date, based on a particular calendar.
    @class CDate
    @param calendar {BaseCalendar} The underlying calendar implementation.
    @param year {number} The year for this date.
    @param month {number} The month for this date.
    @param day {number} The day for this date.
    @return {CDate} The date object.
    @throws Error if an invalid date. */
function CDate(calendar, year, month, day) {
    this._calendar = calendar;
    this._year = year;
    this._month = month;
    this._day = day;
    if (this._calendar._validateLevel === 0 &&
            !this._calendar.isValid(this._year, this._month, this._day)) {
        throw (_exports.local.invalidDate || _exports.regionalOptions[''].invalidDate).
            replace(/\{0\}/, this._calendar.local.name);
    }
}

/** Pad a numeric value with leading zeroes.
    @private
    @param value {number} The number to format.
    @param length {number} The minimum length.
    @return {string} The formatted number. */
function pad(value, length) {
    value = '' + value;
    return '000000'.substring(0, length - value.length) + value;
}

assign(CDate.prototype, {

    /** Create a new date.
        @memberof CDate
        @param [year] {CDate|number} The date to copy or the year for the date (default this date).
        @param [month] {number} The month for the date.
        @param [day] {number} The day for the date.
        @return {CDate} The new date.
        @throws Error if an invalid date. */
    newDate: function(year, month, day) {
        return this._calendar.newDate((year == null ? this : year), month, day);
    },

    /** Set or retrieve the year for this date.
        @memberof CDate
        @param [year] {number} The year for the date.
        @return {number|CDate} The date's year (if no parameter) or the updated date.
        @throws Error if an invalid date. */
    year: function(year) {
        return (arguments.length === 0 ? this._year : this.set(year, 'y'));
    },

    /** Set or retrieve the month for this date.
        @memberof CDate
        @param [month] {number} The month for the date.
        @return {number|CDate} The date's month (if no parameter) or the updated date.
        @throws Error if an invalid date. */
    month: function(month) {
        return (arguments.length === 0 ? this._month : this.set(month, 'm'));
    },

    /** Set or retrieve the day for this date.
        @memberof CDate
        @param [day] {number} The day for the date.
        @return {number|CData} The date's day (if no parameter) or the updated date.
        @throws Error if an invalid date. */
    day: function(day) {
        return (arguments.length === 0 ? this._day : this.set(day, 'd'));
    },

    /** Set new values for this date.
        @memberof CDate
        @param year {number} The year for the date.
        @param month {number} The month for the date.
        @param day {number} The day for the date.
        @return {CDate} The updated date.
        @throws Error if an invalid date. */
    date: function(year, month, day) {
        if (!this._calendar.isValid(year, month, day)) {
            throw (_exports.local.invalidDate || _exports.regionalOptions[''].invalidDate).
                replace(/\{0\}/, this._calendar.local.name);
        }
        this._year = year;
        this._month = month;
        this._day = day;
        return this;
    },

    /** Determine whether this date is in a leap year.
        @memberof CDate
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not. */
    leapYear: function() {
        return this._calendar.leapYear(this);
    },

    /** Retrieve the epoch designator for this date, e.g. BCE or CE.
        @memberof CDate
        @return {string} The current epoch. */
    epoch: function() {
        return this._calendar.epoch(this);
    },

    /** Format the year, if not a simple sequential number.
        @memberof CDate
        @return {string} The formatted year. */
    formatYear: function() {
        return this._calendar.formatYear(this);
    },

    /** Retrieve the month of the year for this date,
        i.e. the month's position within a numbered year.
        @memberof CDate
        @return {number} The month of the year: <code>minMonth</code> to months per year. */
    monthOfYear: function() {
        return this._calendar.monthOfYear(this);
    },

    /** Retrieve the week of the year for this date.
        @memberof CDate
        @return {number} The week of the year: 1 to weeks per year. */
    weekOfYear: function() {
        return this._calendar.weekOfYear(this);
    },

    /** Retrieve the number of days in the year for this date.
        @memberof CDate
        @return {number} The number of days in this year. */
    daysInYear: function() {
        return this._calendar.daysInYear(this);
    },

    /** Retrieve the day of the year for this date.
        @memberof CDate
        @return {number} The day of the year: 1 to days per year. */
    dayOfYear: function() {
        return this._calendar.dayOfYear(this);
    },

    /** Retrieve the number of days in the month for this date.
        @memberof CDate
        @return {number} The number of days. */
    daysInMonth: function() {
        return this._calendar.daysInMonth(this);
    },

    /** Retrieve the day of the week for this date.
        @memberof CDate
        @return {number} The day of the week: 0 to number of days - 1. */
    dayOfWeek: function() {
        return this._calendar.dayOfWeek(this);
    },

    /** Determine whether this date is a week day.
        @memberof CDate
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not. */
    weekDay: function() {
        return this._calendar.weekDay(this);
    },

    /** Retrieve additional information about this date.
        @memberof CDate
        @return {object} Additional information - contents depends on calendar. */
    extraInfo: function() {
        return this._calendar.extraInfo(this);
    },

    /** Add period(s) to a date.
        @memberof CDate
        @param offset {number} The number of periods to adjust by.
        @param period {string} One of 'y' for year, 'm' for month, 'w' for week, 'd' for day.
        @return {CDate} The updated date. */
    add: function(offset, period) {
        return this._calendar.add(this, offset, period);
    },

    /** Set a portion of the date.
        @memberof CDate
        @param value {number} The new value for the period.
        @param period {string} One of 'y' for year, 'm' for month, 'd' for day.
        @return {CDate} The updated date.
        @throws Error if not a valid date. */
    set: function(value, period) {
        return this._calendar.set(this, value, period);
    },

    /** Compare this date to another date.
        @memberof CDate
        @param date {CDate} The other date.
        @return {number} -1 if this date is before the other date,
                0 if they are equal, or +1 if this date is after the other date. */
    compareTo: function(date) {
        if (this._calendar.name !== date._calendar.name) {
            throw (_exports.local.differentCalendars || _exports.regionalOptions[''].differentCalendars).
                replace(/\{0\}/, this._calendar.local.name).replace(/\{1\}/, date._calendar.local.name);
        }
        var c = (this._year !== date._year ? this._year - date._year :
            this._month !== date._month ? this.monthOfYear() - date.monthOfYear() :
            this._day - date._day);
        return (c === 0 ? 0 : (c < 0 ? -1 : +1));
    },

    /** Retrieve the calendar backing this date.
        @memberof CDate
        @return {BaseCalendar} The calendar implementation. */
    calendar: function() {
        return this._calendar;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof CDate
        @return {number} The equivalent Julian date. */
    toJD: function() {
        return this._calendar.toJD(this);
    },

    /** Create a new date from a Julian date.
        @memberof CDate
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        return this._calendar.fromJD(jd);
    },

    /** Convert this date to a standard (Gregorian) JavaScript Date.
        @memberof CDate
        @return {Date} The equivalent JavaScript date. */
    toJSDate: function() {
        return this._calendar.toJSDate(this);
    },

    /** Create a new date from a standard (Gregorian) JavaScript Date.
        @memberof CDate
        @param jsd {Date} The JavaScript date to convert.
        @return {CDate} The equivalent date. */
    fromJSDate: function(jsd) {
        return this._calendar.fromJSDate(jsd);
    },

    /** Convert to a string for display.
        @memberof CDate
        @return {string} This date as a string. */
    toString: function() {
        return (this.year() < 0 ? '-' : '') + pad(Math.abs(this.year()), 4) +
            '-' + pad(this.month(), 2) + '-' + pad(this.day(), 2);
    }
});

/** Basic functionality for all calendars.
    Other calendars should extend this:
    <pre>OtherCalendar.prototype = new BaseCalendar;</pre>
    @class BaseCalendar */
function BaseCalendar() {
    this.shortYearCutoff = '+10';
}

assign(BaseCalendar.prototype, {
    _validateLevel: 0, // "Stack" to turn validation on/off

    /** Create a new date within this calendar - today if no parameters given.
        @memberof BaseCalendar
        @param year {CDate|number} The date to duplicate or the year for the date.
        @param [month] {number} The month for the date.
        @param [day] {number} The day for the date.
        @return {CDate} The new date.
        @throws Error if not a valid date or a different calendar used. */
    newDate: function(year, month, day) {
        if (year == null) {
            return this.today();
        }
        if (year.year) {
            this._validate(year, month, day,
                _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
            day = year.day();
            month = year.month();
            year = year.year();
        }
        return new CDate(this, year, month, day);
    },

    /** Create a new date for today.
        @memberof BaseCalendar
        @return {CDate} Today's date. */
    today: function() {
        return this.fromJSDate(new Date());
    },

    /** Retrieve the epoch designator for this date.
        @memberof BaseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {string} The current epoch.
        @throws Error if an invalid year or a different calendar used. */
    epoch: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay,
            _exports.local.invalidYear || _exports.regionalOptions[''].invalidYear);
        return (date.year() < 0 ? this.local.epochs[0] : this.local.epochs[1]);
    },

    /** Format the year, if not a simple sequential number
        @memberof BaseCalendar
        @param year {CDate|number} The date to format or the year to format.
        @return {string} The formatted year.
        @throws Error if an invalid year or a different calendar used. */
    formatYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay,
            _exports.local.invalidYear || _exports.regionalOptions[''].invalidYear);
        return (date.year() < 0 ? '-' : '') + pad(Math.abs(date.year()), 4)
    },

    /** Retrieve the number of months in a year.
        @memberof BaseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of months.
        @throws Error if an invalid year or a different calendar used. */
    monthsInYear: function(year) {
        this._validate(year, this.minMonth, this.minDay,
            _exports.local.invalidYear || _exports.regionalOptions[''].invalidYear);
        return 12;
    },

    /** Calculate the month's ordinal position within the year -
        for those calendars that don't start at month 1!
        @memberof BaseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param month {number} The month to examine.
        @return {number} The ordinal position, starting from <code>minMonth</code>.
        @throws Error if an invalid year/month or a different calendar used. */
    monthOfYear: function(year, month) {
        var date = this._validate(year, month, this.minDay,
            _exports.local.invalidMonth || _exports.regionalOptions[''].invalidMonth);
        return (date.month() + this.monthsInYear(date) - this.firstMonth) %
            this.monthsInYear(date) + this.minMonth;
    },

    /** Calculate actual month from ordinal position, starting from minMonth.
        @memberof BaseCalendar
        @param year {number} The year to examine.
        @param ord {number} The month's ordinal position.
        @return {number} The month's number.
        @throws Error if an invalid year/month. */
    fromMonthOfYear: function(year, ord) {
        var m = (ord + this.firstMonth - 2 * this.minMonth) %
            this.monthsInYear(year) + this.minMonth;
        this._validate(year, m, this.minDay,
            _exports.local.invalidMonth || _exports.regionalOptions[''].invalidMonth);
        return m;
    },

    /** Retrieve the number of days in a year.
        @memberof BaseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {number} The number of days.
        @throws Error if an invalid year or a different calendar used. */
    daysInYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay,
            _exports.local.invalidYear || _exports.regionalOptions[''].invalidYear);
        return (this.leapYear(date) ? 366 : 365);
    },

    /** Retrieve the day of the year for a date.
        @memberof BaseCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The day of the year.
        @throws Error if an invalid date or a different calendar used. */
    dayOfYear: function(year, month, day) {
        var date = this._validate(year, month, day,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        return date.toJD() - this.newDate(date.year(),
            this.fromMonthOfYear(date.year(), this.minMonth), this.minDay).toJD() + 1;
    },

    /** Retrieve the number of days in a week.
        @memberof BaseCalendar
        @return {number} The number of days. */
    daysInWeek: function() {
        return 7;
    },

    /** Retrieve the day of the week for a date.
        @memberof BaseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The day of the week: 0 to number of days - 1.
        @throws Error if an invalid date or a different calendar used. */
    dayOfWeek: function(year, month, day) {
        var date = this._validate(year, month, day,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        return (Math.floor(this.toJD(date)) + 2) % this.daysInWeek();
    },

    /** Retrieve additional information about a date.
        @memberof BaseCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {object} Additional information - contents depends on calendar.
        @throws Error if an invalid date or a different calendar used. */
    extraInfo: function(year, month, day) {
        this._validate(year, month, day,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        return {};
    },

    /** Add period(s) to a date.
        Cater for no year zero.
        @memberof BaseCalendar
        @param date {CDate} The starting date.
        @param offset {number} The number of periods to adjust by.
        @param period {string} One of 'y' for year, 'm' for month, 'w' for week, 'd' for day.
        @return {CDate} The updated date.
        @throws Error if a different calendar used. */
    add: function(date, offset, period) {
        this._validate(date, this.minMonth, this.minDay,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        return this._correctAdd(date, this._add(date, offset, period), offset, period);
    },

    /** Add period(s) to a date.
        @memberof BaseCalendar
        @private
        @param date {CDate} The starting date.
        @param offset {number} The number of periods to adjust by.
        @param period {string} One of 'y' for year, 'm' for month, 'w' for week, 'd' for day.
        @return {CDate} The updated date. */
    _add: function(date, offset, period) {
        this._validateLevel++;
        if (period === 'd' || period === 'w') {
            var jd = date.toJD() + offset * (period === 'w' ? this.daysInWeek() : 1);
            var d = date.calendar().fromJD(jd);
            this._validateLevel--;
            return [d.year(), d.month(), d.day()];
        }
        try {
            var y = date.year() + (period === 'y' ? offset : 0);
            var m = date.monthOfYear() + (period === 'm' ? offset : 0);
            var d = date.day();// + (period === 'd' ? offset : 0) +
                //(period === 'w' ? offset * this.daysInWeek() : 0);
            var resyncYearMonth = function(calendar) {
                while (m < calendar.minMonth) {
                    y--;
                    m += calendar.monthsInYear(y);
                }
                var yearMonths = calendar.monthsInYear(y);
                while (m > yearMonths - 1 + calendar.minMonth) {
                    y++;
                    m -= yearMonths;
                    yearMonths = calendar.monthsInYear(y);
                }
            };
            if (period === 'y') {
                if (date.month() !== this.fromMonthOfYear(y, m)) { // Hebrew
                    m = this.newDate(y, date.month(), this.minDay).monthOfYear();
                }
                m = Math.min(m, this.monthsInYear(y));
                d = Math.min(d, this.daysInMonth(y, this.fromMonthOfYear(y, m)));
            }
            else if (period === 'm') {
                resyncYearMonth(this);
                d = Math.min(d, this.daysInMonth(y, this.fromMonthOfYear(y, m)));
            }
            var ymd = [y, this.fromMonthOfYear(y, m), d];
            this._validateLevel--;
            return ymd;
        }
        catch (e) {
            this._validateLevel--;
            throw e;
        }
    },

    /** Correct a candidate date after adding period(s) to a date.
        Handle no year zero if necessary.
        @memberof BaseCalendar
        @private
        @param date {CDate} The starting date.
        @param ymd {number[]} The added date.
        @param offset {number} The number of periods to adjust by.
        @param period {string} One of 'y' for year, 'm' for month, 'w' for week, 'd' for day.
        @return {CDate} The updated date. */
    _correctAdd: function(date, ymd, offset, period) {
        if (!this.hasYearZero && (period === 'y' || period === 'm')) {
            if (ymd[0] === 0 || // In year zero
                    (date.year() > 0) !== (ymd[0] > 0)) { // Crossed year zero
                var adj = {y: [1, 1, 'y'], m: [1, this.monthsInYear(-1), 'm'],
                    w: [this.daysInWeek(), this.daysInYear(-1), 'd'],
                    d: [1, this.daysInYear(-1), 'd']}[period];
                var dir = (offset < 0 ? -1 : +1);
                ymd = this._add(date, offset * adj[0] + dir * adj[1], adj[2]);
            }
        }
        return date.date(ymd[0], ymd[1], ymd[2]);
    },

    /** Set a portion of the date.
        @memberof BaseCalendar
        @param date {CDate} The starting date.
        @param value {number} The new value for the period.
        @param period {string} One of 'y' for year, 'm' for month, 'd' for day.
        @return {CDate} The updated date.
        @throws Error if an invalid date or a different calendar used. */
    set: function(date, value, period) {
        this._validate(date, this.minMonth, this.minDay,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        var y = (period === 'y' ? value : date.year());
        var m = (period === 'm' ? value : date.month());
        var d = (period === 'd' ? value : date.day());
        if (period === 'y' || period === 'm') {
            d = Math.min(d, this.daysInMonth(y, m));
        }
        return date.date(y, m, d);
    },

    /** Determine whether a date is valid for this calendar.
        @memberof BaseCalendar
        @param year {number} The year to examine.
        @param month {number} The month to examine.
        @param day {number} The day to examine.
        @return {boolean} <code>true</code> if a valid date, <code>false</code> if not. */
    isValid: function(year, month, day) {
        this._validateLevel++;
        var valid = (this.hasYearZero || year !== 0);
        if (valid) {
            var date = this.newDate(year, month, this.minDay);
            valid = (month >= this.minMonth && month - this.minMonth < this.monthsInYear(date)) &&
                (day >= this.minDay && day - this.minDay < this.daysInMonth(date));
        }
        this._validateLevel--;
        return valid;
    },

    /** Convert the date to a standard (Gregorian) JavaScript Date.
        @memberof BaseCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {Date} The equivalent JavaScript date.
        @throws Error if an invalid date or a different calendar used. */
    toJSDate: function(year, month, day) {
        var date = this._validate(year, month, day,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        return _exports.instance().fromJD(this.toJD(date)).toJSDate();
    },

    /** Convert the date from a standard (Gregorian) JavaScript Date.
        @memberof BaseCalendar
        @param jsd {Date} The JavaScript date.
        @return {CDate} The equivalent calendar date. */
    fromJSDate: function(jsd) {
        return this.fromJD(_exports.instance().fromJSDate(jsd).toJD());
    },

    /** Check that a candidate date is from the same calendar and is valid.
        @memberof BaseCalendar
        @private
        @param year {CDate|number} The date to validate or the year to validate.
        @param [month] {number} The month to validate.
        @param [day] {number} The day to validate.
        @param error {string} Rrror message if invalid.
        @throws Error if different calendars used or invalid date. */
    _validate: function(year, month, day, error) {
        if (year.year) {
            if (this._validateLevel === 0 && this.name !== year.calendar().name) {
                throw (_exports.local.differentCalendars || _exports.regionalOptions[''].differentCalendars).
                    replace(/\{0\}/, this.local.name).replace(/\{1\}/, year.calendar().local.name);
            }
            return year;
        }
        try {
            this._validateLevel++;
            if (this._validateLevel === 1 && !this.isValid(year, month, day)) {
                throw error.replace(/\{0\}/, this.local.name);
            }
            var date = this.newDate(year, month, day);
            this._validateLevel--;
            return date;
        }
        catch (e) {
            this._validateLevel--;
            throw e;
        }
    }
});

/** Implementation of the Proleptic Gregorian Calendar.
    See <a href=":http://en.wikipedia.org/wiki/Gregorian_calendar">http://en.wikipedia.org/wiki/Gregorian_calendar</a>
    and <a href="http://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar">http://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar</a>.
    @class GregorianCalendar
    @augments BaseCalendar
    @param [language=''] {string} The language code (default English) for localisation. */
function GregorianCalendar(language) {
    this.local = this.regionalOptions[language] || this.regionalOptions[''];
}

GregorianCalendar.prototype = new BaseCalendar;

assign(GregorianCalendar.prototype, {
    /** The calendar name.
        @memberof GregorianCalendar */
    name: 'Gregorian',
     /** Julian date of start of Gregorian epoch: 1 January 0001 CE.
        @memberof GregorianCalendar */
    jdEpoch: 1721425.5,
     /** Days per month in a common year.
        @memberof GregorianCalendar */
    daysPerMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
     /** <code>true</code> if has a year zero, <code>false</code> if not.
        @memberof GregorianCalendar */
    hasYearZero: false,
    /** The minimum month number.
        @memberof GregorianCalendar */
    minMonth: 1,
    /** The first month in the year.
        @memberof GregorianCalendar */
    firstMonth: 1,
     /** The minimum day number.
        @memberof GregorianCalendar */
    minDay: 1,

    /** Localisations for the plugin.
        Entries are objects indexed by the language code ('' being the default US/English).
        Each object has the following attributes.
        @memberof GregorianCalendar
        @property name {string} The calendar name.
        @property epochs {string[]} The epoch names.
        @property monthNames {string[]} The long names of the months of the year.
        @property monthNamesShort {string[]} The short names of the months of the year.
        @property dayNames {string[]} The long names of the days of the week.
        @property dayNamesShort {string[]} The short names of the days of the week.
        @property dayNamesMin {string[]} The minimal names of the days of the week.
        @property dateFormat {string} The date format for this calendar.
                See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
        @property firstDay {number} The number of the first day of the week, starting at 0.
        @property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
    regionalOptions: { // Localisations
        '': {
            name: 'Gregorian',
            epochs: ['BCE', 'CE'],
            monthNames: ['January', 'February', 'March', 'April', 'May', 'June',
            'July', 'August', 'September', 'October', 'November', 'December'],
            monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
            dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            dayNamesMin: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
            digits: null,
            dateFormat: 'mm/dd/yyyy',
            firstDay: 0,
            isRTL: false
        }
    },
    
    /** Determine whether this date is in a leap year.
        @memberof GregorianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
        @throws Error if an invalid year or a different calendar used. */
    leapYear: function(year) {
        var date = this._validate(year, this.minMonth, this.minDay,
            _exports.local.invalidYear || _exports.regionalOptions[''].invalidYear);
        var year = date.year() + (date.year() < 0 ? 1 : 0); // No year zero
        return year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);
    },

    /** Determine the week of the year for a date - ISO 8601.
        @memberof GregorianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {number} The week of the year, starting from 1.
        @throws Error if an invalid date or a different calendar used. */
    weekOfYear: function(year, month, day) {
        // Find Thursday of this week starting on Monday
        var checkDate = this.newDate(year, month, day);
        checkDate.add(4 - (checkDate.dayOfWeek() || 7), 'd');
        return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
    },

    /** Retrieve the number of days in a month.
        @memberof GregorianCalendar
        @param year {CDate|number} The date to examine or the year of the month.
        @param [month] {number} The month.
        @return {number} The number of days in this month.
        @throws Error if an invalid month/year or a different calendar used. */
    daysInMonth: function(year, month) {
        var date = this._validate(year, month, this.minDay,
            _exports.local.invalidMonth || _exports.regionalOptions[''].invalidMonth);
        return this.daysPerMonth[date.month() - 1] +
            (date.month() === 2 && this.leapYear(date.year()) ? 1 : 0);
    },

    /** Determine whether this date is a week day.
        @memberof GregorianCalendar
        @param year {CDate|number} The date to examine or the year to examine.
        @param [month] {number} The month to examine.
        @param [day] {number} The day to examine.
        @return {boolean} <code>true</code> if a week day, <code>false</code> if not.
        @throws Error if an invalid date or a different calendar used. */
    weekDay: function(year, month, day) {
        return (this.dayOfWeek(year, month, day) || 7) < 6;
    },

    /** Retrieve the Julian date equivalent for this date,
        i.e. days since January 1, 4713 BCE Greenwich noon.
        @memberof GregorianCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {number} The equivalent Julian date.
        @throws Error if an invalid date or a different calendar used. */
    toJD: function(year, month, day) {
        var date = this._validate(year, month, day,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        year = date.year();
        month = date.month();
        day = date.day();
        if (year < 0) { year++; } // No year zero
        // Jean Meeus algorithm, "Astronomical Algorithms", 1991
        if (month < 3) {
            month += 12;
            year--;
        }
        var a = Math.floor(year / 100);
        var b = 2 - a + Math.floor(a / 4);
        return Math.floor(365.25 * (year + 4716)) +
            Math.floor(30.6001 * (month + 1)) + day + b - 1524.5;
    },

    /** Create a new date from a Julian date.
        @memberof GregorianCalendar
        @param jd {number} The Julian date to convert.
        @return {CDate} The equivalent date. */
    fromJD: function(jd) {
        // Jean Meeus algorithm, "Astronomical Algorithms", 1991
        var z = Math.floor(jd + 0.5);
        var a = Math.floor((z - 1867216.25) / 36524.25);
        a = z + 1 + a - Math.floor(a / 4);
        var b = a + 1524;
        var c = Math.floor((b - 122.1) / 365.25);
        var d = Math.floor(365.25 * c);
        var e = Math.floor((b - d) / 30.6001);
        var day = b - d - Math.floor(e * 30.6001);
        var month = e - (e > 13.5 ? 13 : 1);
        var year = c - (month > 2.5 ? 4716 : 4715);
        if (year <= 0) { year--; } // No year zero
        return this.newDate(year, month, day);
    },

    /** Convert this date to a standard (Gregorian) JavaScript Date.
        @memberof GregorianCalendar
        @param year {CDate|number} The date to convert or the year to convert.
        @param [month] {number} The month to convert.
        @param [day] {number} The day to convert.
        @return {Date} The equivalent JavaScript date.
        @throws Error if an invalid date or a different calendar used. */
    toJSDate: function(year, month, day) {
        var date = this._validate(year, month, day,
            _exports.local.invalidDate || _exports.regionalOptions[''].invalidDate);
        var jsd = new Date(date.year(), date.month() - 1, date.day());
        jsd.setHours(0);
        jsd.setMinutes(0);
        jsd.setSeconds(0);
        jsd.setMilliseconds(0);
        // Hours may be non-zero on daylight saving cut-over:
        // > 12 when midnight changeover, but then cannot generate
        // midnight datetime, so jump to 1AM, otherwise reset.
        jsd.setHours(jsd.getHours() > 12 ? jsd.getHours() + 2 : 0);
        return jsd;
    },

    /** Create a new date from a standard (Gregorian) JavaScript Date.
        @memberof GregorianCalendar
        @param jsd {Date} The JavaScript date to convert.
        @return {CDate} The equivalent date. */
    fromJSDate: function(jsd) {
        return this.newDate(jsd.getFullYear(), jsd.getMonth() + 1, jsd.getDate());
    }
});

// Singleton manager
var _exports = module.exports = new Calendars();

// Date template
_exports.cdate = CDate;

// Base calendar template
_exports.baseCalendar = BaseCalendar;

// Gregorian calendar implementation
_exports.calendars.gregorian = GregorianCalendar;


},{"object-assign":446}],1034:[function(require,module,exports){
/*
 * World Calendars
 * https://github.com/alexcjohnson/world-calendars
 *
 * Batch-converted from kbwood/calendars
 * Many thanks to Keith Wood and all of the contributors to the original project!
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* http://keith-wood.name/calendars.html
   Calendars extras for jQuery v2.0.2.
   Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009.
   Available under the MIT (http://keith-wood.name/licence.html) license. 
   Please attribute the author if you use it. */

var assign = require('object-assign');
var main = require('./main');


assign(main.regionalOptions[''], {
    invalidArguments: 'Invalid arguments',
    invalidFormat: 'Cannot format a date from another calendar',
    missingNumberAt: 'Missing number at position {0}',
    unknownNameAt: 'Unknown name at position {0}',
    unexpectedLiteralAt: 'Unexpected literal at position {0}',
    unexpectedText: 'Additional text found at end'
});
main.local = main.regionalOptions[''];

assign(main.cdate.prototype, {

    /** Format this date.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof CDate
        @param [format] {string} The date format to use (see <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a>).
        @param [settings] {object} Options for the <code>formatDate</code> function.
        @return {string} The formatted date. */
    formatDate: function(format, settings) {
        if (typeof format !== 'string') {
            settings = format;
            format = '';
        }
        return this._calendar.formatDate(format || '', this, settings);
    }
});

assign(main.baseCalendar.prototype, {

    UNIX_EPOCH: main.instance().newDate(1970, 1, 1).toJD(),
    SECS_PER_DAY: 24 * 60 * 60,
    TICKS_EPOCH: main.instance().jdEpoch, // 1 January 0001 CE
    TICKS_PER_DAY: 24 * 60 * 60 * 10000000,

    /** Date form for ATOM (RFC 3339/ISO 8601).
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    ATOM: 'yyyy-mm-dd',
    /** Date form for cookies.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    COOKIE: 'D, dd M yyyy',
    /** Date form for full date.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    FULL: 'DD, MM d, yyyy',
    /** Date form for ISO 8601.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    ISO_8601: 'yyyy-mm-dd',
    /** Date form for Julian date.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    JULIAN: 'J',
    /** Date form for RFC 822.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    RFC_822: 'D, d M yy',
    /** Date form for RFC 850.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    RFC_850: 'DD, dd-M-yy',
    /** Date form for RFC 1036.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    RFC_1036: 'D, d M yy',
    /** Date form for RFC 1123.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    RFC_1123: 'D, d M yyyy',
    /** Date form for RFC 2822.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    RFC_2822: 'D, d M yyyy',
    /** Date form for RSS (RFC 822).
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    RSS: 'D, d M yy',
    /** Date form for Windows ticks.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    TICKS: '!',
    /** Date form for Unix timestamp.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    TIMESTAMP: '@',
    /** Date form for W3c (ISO 8601).
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar */
    W3C: 'yyyy-mm-dd',

    /** Format a date object into a string value.
        The format can be combinations of the following:
        <ul>
        <li>d  - day of month (no leading zero)</li>
        <li>dd - day of month (two digit)</li>
        <li>o  - day of year (no leading zeros)</li>
        <li>oo - day of year (three digit)</li>
        <li>D  - day name short</li>
        <li>DD - day name long</li>
        <li>w  - week of year (no leading zero)</li>
        <li>ww - week of year (two digit)</li>
        <li>m  - month of year (no leading zero)</li>
        <li>mm - month of year (two digit)</li>
        <li>M  - month name short</li>
        <li>MM - month name long</li>
        <li>yy - year (two digit)</li>
        <li>yyyy - year (four digit)</li>
        <li>YYYY - formatted year</li>
        <li>J  - Julian date (days since January 1, 4713 BCE Greenwich noon)</li>
        <li>@  - Unix timestamp (s since 01/01/1970)</li>
        <li>!  - Windows ticks (100ns since 01/01/0001)</li>
        <li>'...' - literal text</li>
        <li>'' - single quote</li>
        </ul>
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar
        @param [format] {string} The desired format of the date (defaults to calendar format).
        @param date {CDate} The date value to format.
        @param [settings] {object} Addition options, whose attributes include:
        @property [dayNamesShort] {string[]} Abbreviated names of the days from Sunday.
        @property [dayNames] {string[]} Names of the days from Sunday.
        @property [monthNamesShort] {string[]} Abbreviated names of the months.
        @property [monthNames] {string[]} Names of the months.
        @property [calculateWeek] {CalendarsPickerCalculateWeek} Function that determines week of the year.
        @property [localNumbers=false] {boolean} <code>true</code> to localise numbers (if available),
                  <code>false</code> to use normal Arabic numerals.
        @return {string} The date in the above format.
        @throws Errors if the date is from a different calendar. */
    formatDate: function(format, date, settings) {
        if (typeof format !== 'string') {
            settings = date;
            date = format;
            format = '';
        }
        if (!date) {
            return '';
        }
        if (date.calendar() !== this) {
            throw main.local.invalidFormat || main.regionalOptions[''].invalidFormat;
        }
        format = format || this.local.dateFormat;
        settings = settings || {};
        var dayNamesShort = settings.dayNamesShort || this.local.dayNamesShort;
        var dayNames = settings.dayNames || this.local.dayNames;
        var monthNumbers = settings.monthNumbers || this.local.monthNumbers;
        var monthNamesShort = settings.monthNamesShort || this.local.monthNamesShort;
        var monthNames = settings.monthNames || this.local.monthNames;
        var calculateWeek = settings.calculateWeek || this.local.calculateWeek;
        // Check whether a format character is doubled
        var doubled = function(match, step) {
            var matches = 1;
            while (iFormat + matches < format.length && format.charAt(iFormat + matches) === match) {
                matches++;
            }
            iFormat += matches - 1;
            return Math.floor(matches / (step || 1)) > 1;
        };
        // Format a number, with leading zeroes if necessary
        var formatNumber = function(match, value, len, step) {
            var num = '' + value;
            if (doubled(match, step)) {
                while (num.length < len) {
                    num = '0' + num;
                }
            }
            return num;
        };
        // Format a name, short or long as requested
        var formatName = function(match, value, shortNames, longNames) {
            return (doubled(match) ? longNames[value] : shortNames[value]);
        };
        // Format month number
        // (e.g. Chinese calendar needs to account for intercalary months)
        var calendar = this;
        var formatMonth = function(date) {
            return (typeof monthNumbers === 'function') ?
                monthNumbers.call(calendar, date, doubled('m')) :
                localiseNumbers(formatNumber('m', date.month(), 2));
        };
        // Format a month name, short or long as requested
        var formatMonthName = function(date, useLongName) {
            if (useLongName) {
                return (typeof monthNames === 'function') ?
                    monthNames.call(calendar, date) :
                    monthNames[date.month() - calendar.minMonth];
            } else {
                return (typeof monthNamesShort === 'function') ?
                    monthNamesShort.call(calendar, date) :
                    monthNamesShort[date.month() - calendar.minMonth];
            }
        };
        // Localise numbers if requested and available
        var digits = this.local.digits;
        var localiseNumbers = function(value) {
            return (settings.localNumbers && digits ? digits(value) : value);
        };
        var output = '';
        var literal = false;
        for (var iFormat = 0; iFormat < format.length; iFormat++) {
            if (literal) {
                if (format.charAt(iFormat) === "'" && !doubled("'")) {
                    literal = false;
                }
                else {
                    output += format.charAt(iFormat);
                }
            }
            else {
                switch (format.charAt(iFormat)) {
                    case 'd': output += localiseNumbers(formatNumber('d', date.day(), 2)); break;
                    case 'D': output += formatName('D', date.dayOfWeek(),
                        dayNamesShort, dayNames); break;
                    case 'o': output += formatNumber('o', date.dayOfYear(), 3); break;
                    case 'w': output += formatNumber('w', date.weekOfYear(), 2); break;
                    case 'm': output += formatMonth(date); break;
                    case 'M': output += formatMonthName(date, doubled('M')); break;
                    case 'y':
                        output += (doubled('y', 2) ? date.year() :
                            (date.year() % 100 < 10 ? '0' : '') + date.year() % 100);
                        break;
                    case 'Y':
                        doubled('Y', 2);
                        output += date.formatYear();
                        break;
                    case 'J': output += date.toJD(); break;
                    case '@': output += (date.toJD() - this.UNIX_EPOCH) * this.SECS_PER_DAY; break;
                    case '!': output += (date.toJD() - this.TICKS_EPOCH) * this.TICKS_PER_DAY; break;
                    case "'":
                        if (doubled("'")) {
                            output += "'";
                        }
                        else {
                            literal = true;
                        }
                        break;
                    default:
                        output += format.charAt(iFormat);
                }
            }
        }
        return output;
    },

    /** Parse a string value into a date object.
        See <a href="#formatDate"><code>formatDate</code></a> for the possible formats, plus:
        <ul>
        <li>* - ignore rest of string</li>
        </ul>
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar
        @param format {string} The expected format of the date ('' for default calendar format).
        @param value {string} The date in the above format.
        @param [settings] {object} Additional options whose attributes include:
        @property [shortYearCutoff] {number} The cutoff year for determining the century.
        @property [dayNamesShort] {string[]} Abbreviated names of the days from Sunday.
        @property [dayNames] {string[]} Names of the days from Sunday.
        @property [monthNamesShort] {string[]} Abbreviated names of the months.
        @property [monthNames] {string[]} Names of the months.
        @return {CDate} The extracted date value or <code>null</code> if value is blank.
        @throws Errors if the format and/or value are missing,
                if the value doesn't match the format, or if the date is invalid. */
    parseDate: function(format, value, settings) {
        if (value == null) {
            throw main.local.invalidArguments || main.regionalOptions[''].invalidArguments;
        }
        value = (typeof value === 'object' ? value.toString() : value + '');
        if (value === '') {
            return null;
        }
        format = format || this.local.dateFormat;
        settings = settings || {};
        var shortYearCutoff = settings.shortYearCutoff || this.shortYearCutoff;
        shortYearCutoff = (typeof shortYearCutoff !== 'string' ? shortYearCutoff :
            this.today().year() % 100 + parseInt(shortYearCutoff, 10));
        var dayNamesShort = settings.dayNamesShort || this.local.dayNamesShort;
        var dayNames = settings.dayNames || this.local.dayNames;
        var parseMonth = settings.parseMonth || this.local.parseMonth;
        var monthNumbers = settings.monthNumbers || this.local.monthNumbers;
        var monthNamesShort = settings.monthNamesShort || this.local.monthNamesShort;
        var monthNames = settings.monthNames || this.local.monthNames;
        var jd = -1;
        var year = -1;
        var month = -1;
        var day = -1;
        var doy = -1;
        var shortYear = false;
        var literal = false;
        // Check whether a format character is doubled
        var doubled = function(match, step) {
            var matches = 1;
            while (iFormat + matches < format.length && format.charAt(iFormat + matches) === match) {
                matches++;
            }
            iFormat += matches - 1;
            return Math.floor(matches / (step || 1)) > 1;
        };
        // Extract a number from the string value
        var getNumber = function(match, step) {
            var isDoubled = doubled(match, step);
            var size = [2, 3, isDoubled ? 4 : 2, isDoubled ? 4 : 2, 10, 11, 20]['oyYJ@!'.indexOf(match) + 1];
            var digits = new RegExp('^-?\\d{1,' + size + '}');
            var num = value.substring(iValue).match(digits);
            if (!num) {
                throw (main.local.missingNumberAt || main.regionalOptions[''].missingNumberAt).
                    replace(/\{0\}/, iValue);
            }
            iValue += num[0].length;
            return parseInt(num[0], 10);
        };
        // Extract a month number from the string value
        var calendar = this;
        var getMonthNumber = function() {
            if (typeof monthNumbers === 'function') {
                doubled('m');  // update iFormat
                var month = monthNumbers.call(calendar, value.substring(iValue));
                iValue += month.length;
                return month;
            }

            return getNumber('m');
        };
        // Extract a name from the string value and convert to an index
        var getName = function(match, shortNames, longNames, step) {
            var names = (doubled(match, step) ? longNames : shortNames);
            for (var i = 0; i < names.length; i++) {
                if (value.substr(iValue, names[i].length).toLowerCase() === names[i].toLowerCase()) {
                    iValue += names[i].length;
                    return i + calendar.minMonth;
                }
            }
            throw (main.local.unknownNameAt || main.regionalOptions[''].unknownNameAt).
                replace(/\{0\}/, iValue);
        };
        // Extract a month number from the string value
        var getMonthName = function() {
            if (typeof monthNames === 'function') {
                var month = doubled('M') ?
                    monthNames.call(calendar, value.substring(iValue)) :
                    monthNamesShort.call(calendar, value.substring(iValue));
                iValue += month.length;
                return month;
            }

            return getName('M', monthNamesShort, monthNames);
        };
        // Confirm that a literal character matches the string value
        var checkLiteral = function() {
            if (value.charAt(iValue) !== format.charAt(iFormat)) {
                throw (main.local.unexpectedLiteralAt ||
                    main.regionalOptions[''].unexpectedLiteralAt).replace(/\{0\}/, iValue);
            }
            iValue++;
        };
        var iValue = 0;
        for (var iFormat = 0; iFormat < format.length; iFormat++) {
            if (literal) {
                if (format.charAt(iFormat) === "'" && !doubled("'")) {
                    literal = false;
                }
                else {
                    checkLiteral();
                }
            }
            else {
                switch (format.charAt(iFormat)) {
                    case 'd': day = getNumber('d'); break;
                    case 'D': getName('D', dayNamesShort, dayNames); break;
                    case 'o': doy = getNumber('o'); break;
                    case 'w': getNumber('w'); break;
                    case 'm': month = getMonthNumber(); break;
                    case 'M': month = getMonthName(); break;
                    case 'y':
                        var iSave = iFormat;
                        shortYear = !doubled('y', 2);
                        iFormat = iSave;
                        year = getNumber('y', 2);
                        break;
                    case 'Y': year = getNumber('Y', 2); break;
                    case 'J':
                        jd = getNumber('J') + 0.5;
                        if (value.charAt(iValue) === '.') {
                            iValue++;
                            getNumber('J');
                        }
                        break;
                    case '@': jd = getNumber('@') / this.SECS_PER_DAY + this.UNIX_EPOCH; break;
                    case '!': jd = getNumber('!') / this.TICKS_PER_DAY + this.TICKS_EPOCH; break;
                    case '*': iValue = value.length; break;
                    case "'":
                        if (doubled("'")) {
                            checkLiteral();
                        }
                        else {
                            literal = true;
                        }
                        break;
                    default: checkLiteral();
                }
            }
        }
        if (iValue < value.length) {
            throw main.local.unexpectedText || main.regionalOptions[''].unexpectedText;
        }
        if (year === -1) {
            year = this.today().year();
        }
        else if (year < 100 && shortYear) {
            year += (shortYearCutoff === -1 ? 1900 : this.today().year() -
                this.today().year() % 100 - (year <= shortYearCutoff ? 0 : 100));
        }
        if (typeof month === 'string') {
            month = parseMonth.call(this, year, month);
        }
        if (doy > -1) {
            month = 1;
            day = doy;
            for (var dim = this.daysInMonth(year, month); day > dim; dim = this.daysInMonth(year, month)) {
                month++;
                day -= dim;
            }
        }
        return (jd > -1 ? this.fromJD(jd) : this.newDate(year, month, day));
    },

    /** A date may be specified as an exact value or a relative one.
        Found in the <code>jquery.calendars.plus.js</code> module.
        @memberof BaseCalendar
        @param dateSpec {CDate|number|string} The date as an object or string in the given format or
                an offset - numeric days from today, or string amounts and periods, e.g. '+1m +2w'.
        @param defaultDate {CDate} The date to use if no other supplied, may be <code>null</code>.
        @param currentDate {CDate} The current date as a possible basis for relative dates,
                if <code>null</code> today is used (optional)
        @param [dateFormat] {string} The expected date format - see <a href="#formatDate"><code>formatDate</code></a>.
        @param [settings] {object} Additional options whose attributes include:
        @property [shortYearCutoff] {number} The cutoff year for determining the century.
        @property [dayNamesShort] {string[]} Abbreviated names of the days from Sunday.
        @property [dayNames] {string[]} Names of the days from Sunday.
        @property [monthNamesShort] {string[]} Abbreviated names of the months.
        @property [monthNames] {string[]} Names of the months.
        @return {CDate} The decoded date. */
    determineDate: function(dateSpec, defaultDate, currentDate, dateFormat, settings) {
        if (currentDate && typeof currentDate !== 'object') {
            settings = dateFormat;
            dateFormat = currentDate;
            currentDate = null;
        }
        if (typeof dateFormat !== 'string') {
            settings = dateFormat;
            dateFormat = '';
        }
        var calendar = this;
        var offsetString = function(offset) {
            try {
                return calendar.parseDate(dateFormat, offset, settings);
            }
            catch (e) {
                // Ignore
            }
            offset = offset.toLowerCase();
            var date = (offset.match(/^c/) && currentDate ?
                currentDate.newDate() : null) || calendar.today();
            var pattern = /([+-]?[0-9]+)\s*(d|w|m|y)?/g;
            var matches = pattern.exec(offset);
            while (matches) {
                date.add(parseInt(matches[1], 10), matches[2] || 'd');
                matches = pattern.exec(offset);
            }
            return date;
        };
        defaultDate = (defaultDate ? defaultDate.newDate() : null);
        dateSpec = (dateSpec == null ? defaultDate :
            (typeof dateSpec === 'string' ? offsetString(dateSpec) : (typeof dateSpec === 'number' ?
            (isNaN(dateSpec) || dateSpec === Infinity || dateSpec === -Infinity ? defaultDate :
            calendar.today().add(dateSpec, 'd')) : calendar.newDate(dateSpec))));
        return dateSpec;
    }
});


},{"./main":1033,"object-assign":446}],1035:[function(require,module,exports){
module.exports = require('cwise-compiler')({
    args: ['array', {
        offset: [1],
        array: 0
    }, 'scalar', 'scalar', 'index'],
    pre: {
        "body": "{}",
        "args": [],
        "thisVars": [],
        "localVars": []
    },
    post: {
        "body": "{}",
        "args": [],
        "thisVars": [],
        "localVars": []
    },
    body: {
        "body": "{\n        var _inline_1_da = _inline_1_arg0_ - _inline_1_arg3_\n        var _inline_1_db = _inline_1_arg1_ - _inline_1_arg3_\n        if((_inline_1_da >= 0) !== (_inline_1_db >= 0)) {\n          _inline_1_arg2_.push(_inline_1_arg4_[0] + 0.5 + 0.5 * (_inline_1_da + _inline_1_db) / (_inline_1_da - _inline_1_db))\n        }\n      }",
        "args": [{
            "name": "_inline_1_arg0_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }, {
            "name": "_inline_1_arg1_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }, {
            "name": "_inline_1_arg2_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }, {
            "name": "_inline_1_arg3_",
            "lvalue": false,
            "rvalue": true,
            "count": 2
        }, {
            "name": "_inline_1_arg4_",
            "lvalue": false,
            "rvalue": true,
            "count": 1
        }],
        "thisVars": [],
        "localVars": ["_inline_1_da", "_inline_1_db"]
    },
    funcName: 'zeroCrossings'
})

},{"cwise-compiler":82}],1036:[function(require,module,exports){
"use strict"

module.exports = findZeroCrossings

var core = require("./lib/zc-core")

function findZeroCrossings(array, level) {
  var cross = []
  level = +level || 0.0
  core(array.hi(array.shape[0]-1), cross, level)
  return cross
}
},{"./lib/zc-core":1035}],1037:[function(require,module,exports){
if (typeof window !== 'undefined') window.$ = window.jQuery = require('jquery');

ImageSequencer = function ImageSequencer(options) {

  options = options || {};
  options.inBrowser = options.inBrowser || typeof window !== 'undefined';
  if (options.inBrowser) options.ui = options.ui || require('./UserInterface');

  var image,
      steps = [],
      modules = require('./Modules');

  // if in browser, prompt for an image
  if (options.imageSelect || options.inBrowser) addStep('image-select');
  else if (options.imageUrl) loadImage(imageUrl);

  // soon, detect local or URL?
  function addStep(name, o) {
    console.log('adding step "' + name + '"');

    o = o || {};
    o.name = o.name || name;
    o.selector = o.selector || 'ismod-' + name;
    o.container = o.container || options.selector;

    var module = modules[name](o);

    steps.push(module);

    function defaultSetupModule() {
      if (options.ui) module.options.ui = options.ui({
        selector: o.selector,
        title: module.options.title
      });
    }

    if (name === "image-select") {

      module.setup(); // just set up initial ImageSelect; it has own UI

    } else {

      // add a default UI, unless the module has one specified
      if (module.hasOwnProperty('setup')) module.setup();
      else {
        defaultSetupModule.apply(module); // run default setup() in scope of module (is this right?)
      }

      var previousStep = steps[steps.length - 2];

      if (previousStep) {
        // connect output of last step to input of this step
        previousStep.options.output = function output(image) {
          log('running module "' + name + '"');
          // display the image in any available ui
          if (previousStep.options.ui && previousStep.options.ui.display) previousStep.options.ui.display(image);
          module.draw(image);
        }
      }

    }

    // Pre-set the initial output behavior of the final step,
    // which will be changed if an additional step is added.
    module.options.output = function output(image) {
      if (module.options.ui && module.options.ui.display) module.options.ui.display(image);
    }

  }

  // passed image is optional but you can pass a
  // non-stored image through the whole steps chain
  function run(image) {
    if (image) steps[1].draw(image);
    else steps[0].draw();
  }

  function log(msg) {
    $('.log').append(msg + ' at ' + new Date());
    console.log(msg);
  }

  // load default starting image
  // i.e. from parameter
  // this could send the image to ImageSelect, or something?
// not currently working
  function loadImage(src, callback) {
    image = new Image();
    image.onload = function() {
      run(image);
      if (callback) callback(image);
    }
    image.src = src;
  }

  return {
    options: options,
    loadImage: loadImage,
    addStep: addStep,
    run: run,
    modules: modules,
    steps: steps,
    ui: options.ui
  }

}

module.exports = ImageSequencer;

},{"./Modules":1038,"./UserInterface":1039,"jquery":273}],1038:[function(require,module,exports){
/*
 * Core modules
 */
module.exports = {

  'image-select': require('./modules/ImageSelect'),
  'green-channel': require('./modules/GreenChannel'),
  'ndvi-red': require('./modules/NdviRed'),
  'plot': require('./modules/Plot'),
  'image-threshold': require('./modules/ImageThreshold'),
  'crop': require('./modules/Crop')
}

},{"./modules/Crop":1040,"./modules/GreenChannel":1041,"./modules/ImageSelect":1042,"./modules/ImageThreshold":1043,"./modules/NdviRed":1044,"./modules/Plot":1046}],1039:[function(require,module,exports){
/*
 * Default UI for each image-sequencer module
 */
module.exports = function UserInterface(options) {

  options = options || {};
  options.container = options.container || ".panels";

  options.random = options.random || parseInt(Math.random() * (new Date()).getTime() / 1000000);
  options.uniqueSelector = options.uniqueSelector || options.selector + '-' + options.random; 
  $(options.container).append('<div class="panel ' + options.selector + ' ' + options.uniqueSelector + '"><div class="image"></div></div>');
  options.el = options.el || $('.' + options.uniqueSelector);
  createLabel(options.el);

  // method to remove the UI for a given method, and remove the step
  function display(image) {
    options.el.find('.image').html(image);
  }

  // method to remove the UI for a given method, and remove the step
  function remove() {}

  // method to reorder steps, and update the UI
  //function move() {}

  function createLabel(el) {
    if (options.title) el.prepend('<h3 class="title">' + options.title + '</h3>');
  }

  return {
    el: options.el,
    uniqueSelector: options.uniqueSelector,
    selector: options.selector,
    display: display,
    remove: remove
  }

}

},{}],1040:[function(require,module,exports){
/*
 * Image Cropping module
 * Usage:
 *    Expected Inputs:
 *      options.x : x-coordinate of image where the modules starts cropping | default : 0
 *      options.y : y-coordinate of image where the modules starts cropping | default : 0
 *      options.w : width of the resulting cropped image | default : 50% of input image width
 *      options.h : height of the resulting cropped image | default : 50% of input image height
 *    Output:
 *      The cropped image, which is essentially a rectangle bounded by the lines:
 *          x = options.x
 *          x = options.x + options.w
 *          y = options.y
 *          y = options.y + options.h
 */
 module.exports = function Crop(options){

   options = options || {};
   options.title = "Crop Image";
   options.format = options.format || "png";

   function draw(image) {
     var getPixels = require("get-pixels"),
         savePixels = require("save-pixels"),
         base64 = require('base64-stream');

     getPixels(image.src,function(err,pixels){
       var newdata = [];
       var ox = options.x || 0;
       var oy = options.y || 0;
       var w = options.w || Math.floor(0.5*pixels.shape[0]);
       var h = options.h || Math.floor(0.5*pixels.shape[1]);
       var iw = pixels.shape[0]; //Width of Original Image
       newarray = new Uint8Array(4*w*h);
       for (var n = oy; n < oy + h; n++) {
         newarray.set(pixels.data.slice(n*4*iw + ox, n*4*iw + ox + 4*w),4*w*(n-oy));
       }
       pixels.data = newarray;
       pixels.shape = [w,h,4];
       pixels.stride[1] = 4*w;

       var buffer = base64.encode();
       savePixels(pixels, options.format)
         .on('end', function() {

         var img = new Image();

         img.src = 'data:image/' + options.format + ';base64,' + buffer.read().toString();

         if (options.output) options.output(img);

       }).pipe(buffer);

     });
   }

   return {
     options: options,
     draw: draw
   }
 }

},{"base64-stream":13,"get-pixels":113,"save-pixels":963}],1041:[function(require,module,exports){
/*
 * Display only the green channel
 */
module.exports = function GreenChannel(options) {

  options = options || {};
  options.title = "Green channel only";
  options.description = "Displays only the green channel of an image";

  //function setup() {} // optional

  function draw(image) {
    function changePixel(r, g, b, a) {
      return [0, g, 0, a];
    }
    return require('./PixelManipulation.js')(image, {
      output: options.output,
      changePixel: changePixel
    });
  }

  return {
    options: options,
    //setup: setup, // optional
    draw:  draw
  }
}

},{"./PixelManipulation.js":1045}],1042:[function(require,module,exports){
/*
 * Special module to kick off the sequence
 *  -- depends on jQuery for interface setup & drag & drop
 */
module.exports = function ImageSelect(options) {

  if (!window.hasOwnProperty('$')) window.$ = window.jQuery = require('jquery');

  options = options || {};
  options.title = "Select image";
  options.inputSelector = options.inputSelector || "#file-select";

  var image,
      el = $('.' + options.selector + ' .mod-drop');

  function setup() {

    // CSS UI
    el.on('dragenter', function(e) {
      el.addClass('hover');
    });

    el.on('dragleave', function(e) {
      el.removeClass('hover');
    });

    // Drag & Drop behavior
    function onImage(e) {
      e.preventDefault();
      e.stopPropagation(); // stops the browser from redirecting.

      var files;
      if (e.target && e.target.files) files = e.target.files;
      else files = e.dataTransfer.files;

      for (var i = 0, f; f = files[i]; i++) {
        // Read the File objects in this FileList.

        reader = new FileReader();
        reader.onload = function(e) {
          // we should trigger "load" event here

          image = new Image();
          image.src = event.target.result;

          el.html(image); // may be redundant

          // this is done once per image:
          options.output(image);
        }
        reader.readAsDataURL(f);

      }
    }

    function onDragOver(e) {
      e.stopPropagation();
      e.preventDefault();
      e.dataTransfer.dropEffect = 'copy'; // Explicitly show this is a copy.
    }

    el.on('dragover', onDragOver, false);
    el[0].addEventListener('drop', onImage, false);
    $(options.inputSelector).change(onImage);

  }

  // this module is unique because it creates the image
  function draw(image) {
    el.html(image);
    if (options.output) options.output(image);
  }

  return {
    options: options,
    draw: draw,
    setup: setup
  }

}

},{"jquery":273}],1043:[function(require,module,exports){
/*
 * Image thresholding with 'image-filter-threshold'
 */
module.exports = function ImageThreshold(options) {
  options = options || {};
  options.title = "Threshold image";
  options.threshold = options.threshold || 30;

  var image;

  function draw(inputImage) {
    $(inputImage).load(function(){
      var canvas = document.createElement('canvas');
      canvas.width = inputImage.naturalWidth;
      canvas.height = inputImage.naturalHeight;
      var context = canvas.getContext('2d');
      context.drawImage(inputImage, 0, 0);

      var imageData = context.getImageData(0, 0, canvas.width, canvas.height);

      var imageThreshold = require('image-filter-threshold');
      var imageFilterCore = require('image-filter-core');

      var result = imageThreshold({
        data: imageData,
        threshold: options.threshold
      }).then(function (imageData) {
        image = new Image();
        image.onload = function onLoad() {
          if (options.output) options.output(image);
        }
       image.src = imageFilterCore.convertImageDataToCanvasURL(imageData);
      });
    });
  }

  function get() {
    return image;
  }

  return {
    options: options,
    draw: draw,
    get: get
  }
}

},{"image-filter-core":261,"image-filter-threshold":262}],1044:[function(require,module,exports){
/*
 * NDVI with red filter (blue channel is infrared)
 */
module.exports = function NdviRed(options) {

  options = options || {};
  options.title = "NDVI for red-filtered cameras (blue is infrared)";

  //function setup() {} // optional

  function draw(image) {
    function changePixel(r, g, b, a) {
      var ndvi = 255 * (b - r) / (1.00 * b + r);
      return [ndvi, ndvi, ndvi, a];
    }
    return require('./PixelManipulation.js')(image, {
      output: options.output,
      changePixel: changePixel
    });
  }

  return {
    options: options,
    //setup: setup, // optional
    draw: draw
  }
}

},{"./PixelManipulation.js":1045}],1045:[function(require,module,exports){
/*
 * General purpose per-pixel manipulation
 * accepting a changePixel() method to remix a pixel's channels
 */
module.exports = function PixelManipulation(image, options) {

  options = options || {};
  options.changePixel = options.changePixel || function changePixel(r, g, b, a) {
    return [r, g, b, a];
  }
  options.format = options.format || "jpg";

  var getPixels = require("get-pixels"),
      savePixels = require("save-pixels"),
      base64 = require('base64-stream');

  getPixels(image.src, function(err, pixels) {

    if(err) {
      console.log("Bad image path")
      return
    }

    // iterate through pixels;
    // this could possibly be more efficient; see 
    // https://github.com/p-v-o-s/infragram-js/blob/master/public/infragram.js#L173-L181
    for(var x = 1; x < pixels.shape[0]; x++) {
      for(var y = 1; y < pixels.shape[1]; y++) {

        pixel = options.changePixel(
          pixels.get(x, y, 0),
          pixels.get(x, y, 1),
          pixels.get(x, y, 2),
          pixels.get(x, y, 3)
        );

        pixels.set(x, y, 0, pixel[0]);
        pixels.set(x, y, 1, pixel[1]);
        pixels.set(x, y, 2, pixel[2]);
        pixels.set(x, y, 3, pixel[3]);

      }
    }

    // there may be a more efficient means to encode an image object,
    // but node modules and their documentation are essentially arcane on this point
    var buffer = base64.encode();
    savePixels(pixels, options.format)
      .on('end', function() {

      var img = new Image();

      img.src = 'data:image/' + options.format + ';base64,' + buffer.read().toString();

      if (options.output) options.output(img);

    }).pipe(buffer);

  });

}

},{"base64-stream":13,"get-pixels":113,"save-pixels":963}],1046:[function(require,module,exports){
/*
 * Plot image on a graph with color bar
 */
module.exports = function Plot(options) {

  options = options || {};
  options.title = "Plot with colorbar";
  options.colorscale = options.colorscale || 'Jet',//'RdBu';
  options.type = options.type || 'contour'; // or 'heatmap'

  var image;

  function draw(_image) {

    /* https://plot.ly/javascript/heatmap-and-contour-colorscales/#custom-colorscale
  type: 'contour',
  colorscale: [[0,    'rgb(166,206,227)'], 
               [0.25, 'rgb(31,120,180)'], 
               [0.45, 'rgb(178,223,138)'], 
               [0.65, 'rgb(51,160,44)'], 
               [0.85, 'rgb(251,154,153)'], 
               [1,    'rgb(227,26,28)']]
    */

    var Plotly = require('plotly.js'),
        getPixels = require("get-pixels");

    var data = [{
      z: [],
      colorscale: options.colorscale,
      type: options.type
    }];

    getPixels(_image.src, function(err, pixels) {

      if(err) {
        console.log("Bad image path")
        return
      }

      for(var y = pixels.shape[1]; y > 0; y--) {
        data[0].z.push([]);
        for(var x = 1; x < pixels.shape[0]; x++) {

          data[0].z[data[0].z.length - 1].push(pixels.get(x, y, 0) / 255.00);

        }
      }

      var layout = { title: '' };
      random = parseInt(Math.random() * (new Date()).getTime() / 1000000);

      options.ui.el.append('<div id="plot-' + random + '"></div>');
      Plotly.newPlot('plot-' + random, data, layout)
/*        .then(function afterPlot(graphData) {

          options.output(Plotly.toImage(graphData, {
            format: 'jpeg',
            height: _image.height,
            width: _image.width 
          }));

      });
*/
    });

  }

  return {
    options: options,
    draw: draw
  }
}

},{"get-pixels":113,"plotly.js":487}]},{},[1037]);